drivers/net/ethernet/rocker/rocker.c

   1 /*
   2  * drivers/net/ethernet/rocker/rocker.c - Rocker switch device driver
   3  * Copyright (c) 2014 Jiri Pirko <jiri@resnulli.us>
   4  * Copyright (c) 2014 Scott Feldman <sfeldma@gmail.com>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  */
  11
  12 #include <linux/kernel.h>
  13 #include <linux/module.h>
  14 #include <linux/pci.h>
  15 #include <linux/interrupt.h>
  16 #include <linux/sched.h>
  17 #include <linux/wait.h>
  18 #include <linux/spinlock.h>
  19 #include <linux/hashtable.h>
  20 #include <linux/crc32.h>
  21 #include <linux/sort.h>
  22 #include <linux/random.h>
  23 #include <linux/netdevice.h>
  24 #include <linux/inetdevice.h>
  25 #include <linux/skbuff.h>
  26 #include <linux/socket.h>
  27 #include <linux/etherdevice.h>
  28 #include <linux/ethtool.h>
  29 #include <linux/if_ether.h>
  30 #include <linux/if_vlan.h>
  31 #include <linux/if_bridge.h>
  32 #include <linux/bitops.h>
  33 #include <linux/ctype.h>
  34 #include <net/switchdev.h>
  35 #include <net/rtnetlink.h>
  36 #include <net/ip_fib.h>
  37 #include <net/netevent.h>
  38 #include <net/arp.h>
  39 #include <asm-generic/io-64-nonatomic-lo-hi.h>
  40 #include <generated/utsrelease.h>
  41
  42 #include "rocker.h"
  43
  44 static const char rocker_driver_name[] = "rocker";
  45
  46 static const struct pci_device_id rocker_pci_id_table[] = {
  47         {PCI_VDEVICE(REDHAT, PCI_DEVICE_ID_REDHAT_ROCKER), 0},
  48         {0, }
  49 };
  50
  51 struct rocker_flow_tbl_key {
  52         u32 priority;
  53         enum rocker_of_dpa_table_id tbl_id;
  54         union {
  55                 struct {
  56                         u32 in_pport;
  57                         u32 in_pport_mask;
  58                         enum rocker_of_dpa_table_id goto_tbl;
  59                 } ig_port;
  60                 struct {
  61                         u32 in_pport;
  62                         __be16 vlan_id;
  63                         __be16 vlan_id_mask;
  64                         enum rocker_of_dpa_table_id goto_tbl;
  65                         bool untagged;
  66                         __be16 new_vlan_id;
  67                 } vlan;
  68                 struct {
  69                         u32 in_pport;
  70                         u32 in_pport_mask;
  71                         __be16 eth_type;
  72                         u8 eth_dst[ETH_ALEN];
  73                         u8 eth_dst_mask[ETH_ALEN];
  74                         __be16 vlan_id;
  75                         __be16 vlan_id_mask;
  76                         enum rocker_of_dpa_table_id goto_tbl;
  77                         bool copy_to_cpu;
  78                 } term_mac;
  79                 struct {
  80                         __be16 eth_type;
  81                         __be32 dst4;
  82                         __be32 dst4_mask;
  83                         enum rocker_of_dpa_table_id goto_tbl;
  84                         u32 group_id;
  85                 } ucast_routing;
  86                 struct {
  87                         u8 eth_dst[ETH_ALEN];
  88                         u8 eth_dst_mask[ETH_ALEN];
  89                         int has_eth_dst;
  90                         int has_eth_dst_mask;
  91                         __be16 vlan_id;
  92                         u32 tunnel_id;
  93                         enum rocker_of_dpa_table_id goto_tbl;
  94                         u32 group_id;
  95                         bool copy_to_cpu;
  96                 } bridge;
  97                 struct {
  98                         u32 in_pport;
  99                         u32 in_pport_mask;
 100                         u8 eth_src[ETH_ALEN];
 101                         u8 eth_src_mask[ETH_ALEN];
 102                         u8 eth_dst[ETH_ALEN];
 103                         u8 eth_dst_mask[ETH_ALEN];
 104                         __be16 eth_type;
 105                         __be16 vlan_id;
 106                         __be16 vlan_id_mask;
 107                         u8 ip_proto;
 108                         u8 ip_proto_mask;
 109                         u8 ip_tos;
 110                         u8 ip_tos_mask;
 111                         u32 group_id;
 112                 } acl;
 113         };
 114 };
 115
 116 struct rocker_flow_tbl_entry {
 117         struct hlist_node entry;
 118         u32 cmd;
 119         u64 cookie;
 120         struct rocker_flow_tbl_key key;
 121         size_t key_len;
 122         u32 key_crc32; /* key */
 123 };
 124
 125 struct rocker_group_tbl_entry {
 126         struct hlist_node entry;
 127         u32 cmd;
 128         u32 group_id; /* key */
 129         u16 group_count;
 130         u32 *group_ids;
 131         union {
 132                 struct {
 133                         u8 pop_vlan;
 134                 } l2_interface;
 135                 struct {
 136                         u8 eth_src[ETH_ALEN];
 137                         u8 eth_dst[ETH_ALEN];
 138                         __be16 vlan_id;
 139                         u32 group_id;
 140                 } l2_rewrite;
 141                 struct {
 142                         u8 eth_src[ETH_ALEN];
 143                         u8 eth_dst[ETH_ALEN];
 144                         __be16 vlan_id;
 145                         bool ttl_check;
 146                         u32 group_id;
 147                 } l3_unicast;
 148         };
 149 };
 150
 151 struct rocker_fdb_tbl_entry {
 152         struct hlist_node entry;
 153         u32 key_crc32; /* key */
 154         bool learned;
 155         struct rocker_fdb_tbl_key {
 156                 u32 pport;
 157                 u8 addr[ETH_ALEN];
 158                 __be16 vlan_id;
 159         } key;
 160 };
 161
 162 struct rocker_internal_vlan_tbl_entry {
 163         struct hlist_node entry;
 164         int ifindex; /* key */
 165         u32 ref_count;
 166         __be16 vlan_id;
 167 };
 168
 169 struct rocker_neigh_tbl_entry {
 170         struct hlist_node entry;
 171         __be32 ip_addr; /* key */
 172         struct net_device *dev;
 173         u32 ref_count;
 174         u32 index;
 175         u8 eth_dst[ETH_ALEN];
 176         bool ttl_check;
 177 };
 178
 179 struct rocker_desc_info {
 180         char *data; /* mapped */
 181         size_t data_size;
 182         size_t tlv_size;
 183         struct rocker_desc *desc;
 184         dma_addr_t mapaddr;
 185 };
 186
 187 struct rocker_dma_ring_info {
 188         size_t size;
 189         u32 head;
 190         u32 tail;
 191         struct rocker_desc *desc; /* mapped */
 192         dma_addr_t mapaddr;
 193         struct rocker_desc_info *desc_info;
 194         unsigned int type;
 195 };
 196
 197 struct rocker;
 198
 199 enum {
 200         ROCKER_CTRL_LINK_LOCAL_MCAST,
 201         ROCKER_CTRL_LOCAL_ARP,
 202         ROCKER_CTRL_IPV4_MCAST,
 203         ROCKER_CTRL_IPV6_MCAST,
 204         ROCKER_CTRL_DFLT_BRIDGING,
 205         ROCKER_CTRL_DFLT_OVS,
 206         ROCKER_CTRL_MAX,
 207 };
 208
 209 #define ROCKER_INTERNAL_VLAN_ID_BASE    0x0f00
 210 #define ROCKER_N_INTERNAL_VLANS         255
 211 #define ROCKER_VLAN_BITMAP_LEN          BITS_TO_LONGS(VLAN_N_VID)
 212 #define ROCKER_INTERNAL_VLAN_BITMAP_LEN BITS_TO_LONGS(ROCKER_N_INTERNAL_VLANS)
 213
 214 struct rocker_port {
 215         struct net_device *dev;
 216         struct net_device *bridge_dev;
 217         struct rocker *rocker;
 218         unsigned int port_number;
 219         u32 pport;
 220         __be16 internal_vlan_id;
 221         int stp_state;
 222         u32 brport_flags;
 223         bool ctrls[ROCKER_CTRL_MAX];
 224         unsigned long vlan_bitmap[ROCKER_VLAN_BITMAP_LEN];
 225         struct napi_struct napi_tx;
 226         struct napi_struct napi_rx;
 227         struct rocker_dma_ring_info tx_ring;
 228         struct rocker_dma_ring_info rx_ring;
 229         struct list_head trans_mem;
 230 };
 231
 232 struct rocker {
 233         struct pci_dev *pdev;
 234         u8 __iomem *hw_addr;
 235         struct msix_entry *msix_entries;
 236         unsigned int port_count;
 237         struct rocker_port **ports;
 238         struct {
 239                 u64 id;
 240         } hw;
 241         spinlock_t cmd_ring_lock;               /* for cmd ring accesses */
 242         struct rocker_dma_ring_info cmd_ring;
 243         struct rocker_dma_ring_info event_ring;
 244         DECLARE_HASHTABLE(flow_tbl, 16);
 245         spinlock_t flow_tbl_lock;               /* for flow tbl accesses */
 246         u64 flow_tbl_next_cookie;
 247         DECLARE_HASHTABLE(group_tbl, 16);
 248         spinlock_t group_tbl_lock;              /* for group tbl accesses */
 249         DECLARE_HASHTABLE(fdb_tbl, 16);
 250         spinlock_t fdb_tbl_lock;                /* for fdb tbl accesses */
 251         unsigned long internal_vlan_bitmap[ROCKER_INTERNAL_VLAN_BITMAP_LEN];
 252         DECLARE_HASHTABLE(internal_vlan_tbl, 8);
 253         spinlock_t internal_vlan_tbl_lock;      /* for vlan tbl accesses */
 254         DECLARE_HASHTABLE(neigh_tbl, 16);
 255         spinlock_t neigh_tbl_lock;              /* for neigh tbl accesses */
 256         u32 neigh_tbl_next_index;
 257 };
 258
 259 static const u8 zero_mac[ETH_ALEN]   = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
 260 static const u8 ff_mac[ETH_ALEN]     = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
 261 static const u8 ll_mac[ETH_ALEN]     = { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x00 };
 262 static const u8 ll_mask[ETH_ALEN]    = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xf0 };
 263 static const u8 mcast_mac[ETH_ALEN]  = { 0x01, 0x00, 0x00, 0x00, 0x00, 0x00 };
 264 static const u8 ipv4_mcast[ETH_ALEN] = { 0x01, 0x00, 0x5e, 0x00, 0x00, 0x00 };
 265 static const u8 ipv4_mask[ETH_ALEN]  = { 0xff, 0xff, 0xff, 0x80, 0x00, 0x00 };
 266 static const u8 ipv6_mcast[ETH_ALEN] = { 0x33, 0x33, 0x00, 0x00, 0x00, 0x00 };
 267 static const u8 ipv6_mask[ETH_ALEN]  = { 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 };
 268
 269 /* Rocker priority levels for flow table entries.  Higher
 270  * priority match takes precedence over lower priority match.
 271  */
 272
 273 enum {
 274         ROCKER_PRIORITY_UNKNOWN = 0,
 275         ROCKER_PRIORITY_IG_PORT = 1,
 276         ROCKER_PRIORITY_VLAN = 1,
 277         ROCKER_PRIORITY_TERM_MAC_UCAST = 0,
 278         ROCKER_PRIORITY_TERM_MAC_MCAST = 1,
 279         ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_EXACT = 1,
 280         ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_WILD = 2,
 281         ROCKER_PRIORITY_BRIDGING_VLAN = 3,
 282         ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_EXACT = 1,
 283         ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_WILD = 2,
 284         ROCKER_PRIORITY_BRIDGING_TENANT = 3,
 285         ROCKER_PRIORITY_ACL_CTRL = 3,
 286         ROCKER_PRIORITY_ACL_NORMAL = 2,
 287         ROCKER_PRIORITY_ACL_DFLT = 1,
 288 };
 289
 290 static bool rocker_vlan_id_is_internal(__be16 vlan_id)
 291 {
 292         u16 start = ROCKER_INTERNAL_VLAN_ID_BASE;
 293         u16 end = 0xffe;
 294         u16 _vlan_id = ntohs(vlan_id);
 295
 296         return (_vlan_id >= start && _vlan_id <= end);
 297 }
 298
 299 static __be16 rocker_port_vid_to_vlan(const struct rocker_port *rocker_port,
 300                                       u16 vid, bool *pop_vlan)
 301 {
 302         __be16 vlan_id;
 303
 304         if (pop_vlan)
 305                 *pop_vlan = false;
 306         vlan_id = htons(vid);
 307         if (!vlan_id) {
 308                 vlan_id = rocker_port->internal_vlan_id;
 309                 if (pop_vlan)
 310                         *pop_vlan = true;
 311         }
 312
 313         return vlan_id;
 314 }
 315
 316 static u16 rocker_port_vlan_to_vid(const struct rocker_port *rocker_port,
 317                                    __be16 vlan_id)
 318 {
 319         if (rocker_vlan_id_is_internal(vlan_id))
 320                 return 0;
 321
 322         return ntohs(vlan_id);
 323 }
 324
 325 static bool rocker_port_is_slave(const struct rocker_port *rocker_port,
 326                                    const char *kind)
 327 {
 328         return rocker_port->bridge_dev &&
 329                 !strcmp(rocker_port->bridge_dev->rtnl_link_ops->kind, kind);
 330 }
 331
 332 static bool rocker_port_is_bridged(const struct rocker_port *rocker_port)
 333 {
 334         return rocker_port_is_slave(rocker_port, "bridge");
 335 }
 336
 337 static bool rocker_port_is_ovsed(const struct rocker_port *rocker_port)
 338 {
 339         return rocker_port_is_slave(rocker_port, "openvswitch");
 340 }
 341
 342 #define ROCKER_OP_FLAG_REMOVE           BIT(0)
 343 #define ROCKER_OP_FLAG_NOWAIT           BIT(1)
 344 #define ROCKER_OP_FLAG_LEARNED          BIT(2)
 345 #define ROCKER_OP_FLAG_REFRESH          BIT(3)
 346
 347 static void *__rocker_port_mem_alloc(struct rocker_port *rocker_port,
 348                                      enum switchdev_trans trans, int flags,
 349                                      size_t size)
 350 {
 351         struct list_head *elem = NULL;
 352         gfp_t gfp_flags = (flags & ROCKER_OP_FLAG_NOWAIT) ?
 353                           GFP_ATOMIC : GFP_KERNEL;
 354
 355         /* If in transaction prepare phase, allocate the memory
 356          * and enqueue it on a per-port list.  If in transaction
 357          * commit phase, dequeue the memory from the per-port list
 358          * rather than re-allocating the memory.  The idea is the
 359          * driver code paths for prepare and commit are identical
 360          * so the memory allocated in the prepare phase is the
 361          * memory used in the commit phase.
 362          */
 363
 364         switch (trans) {
 365         case SWITCHDEV_TRANS_PREPARE:
 366                 elem = kzalloc(size + sizeof(*elem), gfp_flags);
 367                 if (!elem)
 368                         return NULL;
 369                 list_add_tail(elem, &rocker_port->trans_mem);
 370                 break;
 371         case SWITCHDEV_TRANS_COMMIT:
 372                 BUG_ON(list_empty(&rocker_port->trans_mem));
 373                 elem = rocker_port->trans_mem.next;
 374                 list_del_init(elem);
 375                 break;
 376         case SWITCHDEV_TRANS_NONE:
 377                 elem = kzalloc(size + sizeof(*elem), gfp_flags);
 378                 if (elem)
 379                         INIT_LIST_HEAD(elem);
 380                 break;
 381         default:
 382                 break;
 383         }
 384
 385         return elem ? elem + 1 : NULL;
 386 }
 387
 388 static void *rocker_port_kzalloc(struct rocker_port *rocker_port,
 389                                  enum switchdev_trans trans, int flags,
 390                                  size_t size)
 391 {
 392         return __rocker_port_mem_alloc(rocker_port, trans, flags, size);
 393 }
 394
 395 static void *rocker_port_kcalloc(struct rocker_port *rocker_port,
 396                                  enum switchdev_trans trans, int flags,
 397                                  size_t n, size_t size)
 398 {
 399         return __rocker_port_mem_alloc(rocker_port, trans, flags, n * size);
 400 }
 401
 402 static void rocker_port_kfree(enum switchdev_trans trans, const void *mem)
 403 {
 404         struct list_head *elem;
 405
 406         /* Frees are ignored if in transaction prepare phase.  The
 407          * memory remains on the per-port list until freed in the
 408          * commit phase.
 409          */
 410
 411         if (trans == SWITCHDEV_TRANS_PREPARE)
 412                 return;
 413
 414         elem = (struct list_head *)mem - 1;
 415         BUG_ON(!list_empty(elem));
 416         kfree(elem);
 417 }
 418
 419 struct rocker_wait {
 420         wait_queue_head_t wait;
 421         bool done;
 422         bool nowait;
 423 };
 424
 425 static void rocker_wait_reset(struct rocker_wait *wait)
 426 {
 427         wait->done = false;
 428         wait->nowait = false;
 429 }
 430
 431 static void rocker_wait_init(struct rocker_wait *wait)
 432 {
 433         init_waitqueue_head(&wait->wait);
 434         rocker_wait_reset(wait);
 435 }
 436
 437 static struct rocker_wait *rocker_wait_create(struct rocker_port *rocker_port,
 438                                               enum switchdev_trans trans,
 439                                               int flags)
 440 {
 441         struct rocker_wait *wait;
 442
 443         wait = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*wait));
 444         if (!wait)
 445                 return NULL;
 446         rocker_wait_init(wait);
 447         return wait;
 448 }
 449
 450 static void rocker_wait_destroy(enum switchdev_trans trans,
 451                                 struct rocker_wait *wait)
 452 {
 453         rocker_port_kfree(trans, wait);
 454 }
 455
 456 static bool rocker_wait_event_timeout(struct rocker_wait *wait,
 457                                       unsigned long timeout)
 458 {
 459         wait_event_timeout(wait->wait, wait->done, HZ / 10);
 460         if (!wait->done)
 461                 return false;
 462         return true;
 463 }
 464
 465 static void rocker_wait_wake_up(struct rocker_wait *wait)
 466 {
 467         wait->done = true;
 468         wake_up(&wait->wait);
 469 }
 470
 471 static u32 rocker_msix_vector(const struct rocker *rocker, unsigned int vector)
 472 {
 473         return rocker->msix_entries[vector].vector;
 474 }
 475
 476 static u32 rocker_msix_tx_vector(const struct rocker_port *rocker_port)
 477 {
 478         return rocker_msix_vector(rocker_port->rocker,
 479                                   ROCKER_MSIX_VEC_TX(rocker_port->port_number));
 480 }
 481
 482 static u32 rocker_msix_rx_vector(const struct rocker_port *rocker_port)
 483 {
 484         return rocker_msix_vector(rocker_port->rocker,
 485                                   ROCKER_MSIX_VEC_RX(rocker_port->port_number));
 486 }
 487
 488 #define rocker_write32(rocker, reg, val)        \
 489         writel((val), (rocker)->hw_addr + (ROCKER_ ## reg))
 490 #define rocker_read32(rocker, reg)      \
 491         readl((rocker)->hw_addr + (ROCKER_ ## reg))
 492 #define rocker_write64(rocker, reg, val)        \
 493         writeq((val), (rocker)->hw_addr + (ROCKER_ ## reg))
 494 #define rocker_read64(rocker, reg)      \
 495         readq((rocker)->hw_addr + (ROCKER_ ## reg))
 496
 497 /*****************************
 498  * HW basic testing functions
 499  *****************************/
 500
 501 static int rocker_reg_test(const struct rocker *rocker)
 502 {
 503         const struct pci_dev *pdev = rocker->pdev;
 504         u64 test_reg;
 505         u64 rnd;
 506
 507         rnd = prandom_u32();
 508         rnd >>= 1;
 509         rocker_write32(rocker, TEST_REG, rnd);
 510         test_reg = rocker_read32(rocker, TEST_REG);
 511         if (test_reg != rnd * 2) {
 512                 dev_err(&pdev->dev, "unexpected 32bit register value %08llx, expected %08llx\n",
 513                         test_reg, rnd * 2);
 514                 return -EIO;
 515         }
 516
 517         rnd = prandom_u32();
 518         rnd <<= 31;
 519         rnd |= prandom_u32();
 520         rocker_write64(rocker, TEST_REG64, rnd);
 521         test_reg = rocker_read64(rocker, TEST_REG64);
 522         if (test_reg != rnd * 2) {
 523                 dev_err(&pdev->dev, "unexpected 64bit register value %16llx, expected %16llx\n",
 524                         test_reg, rnd * 2);
 525                 return -EIO;
 526         }
 527
 528         return 0;
 529 }
 530
 531 static int rocker_dma_test_one(const struct rocker *rocker,
 532                                struct rocker_wait *wait, u32 test_type,
 533                                dma_addr_t dma_handle, const unsigned char *buf,
 534                                const unsigned char *expect, size_t size)
 535 {
 536         const struct pci_dev *pdev = rocker->pdev;
 537         int i;
 538
 539         rocker_wait_reset(wait);
 540         rocker_write32(rocker, TEST_DMA_CTRL, test_type);
 541
 542         if (!rocker_wait_event_timeout(wait, HZ / 10)) {
 543                 dev_err(&pdev->dev, "no interrupt received within a timeout\n");
 544                 return -EIO;
 545         }
 546
 547         for (i = 0; i < size; i++) {
 548                 if (buf[i] != expect[i]) {
 549                         dev_err(&pdev->dev, "unexpected memory content %02x at byte %x\n, %02x expected",
 550                                 buf[i], i, expect[i]);
 551                         return -EIO;
 552                 }
 553         }
 554         return 0;
 555 }
 556
 557 #define ROCKER_TEST_DMA_BUF_SIZE (PAGE_SIZE * 4)
 558 #define ROCKER_TEST_DMA_FILL_PATTERN 0x96
 559
 560 static int rocker_dma_test_offset(const struct rocker *rocker,
 561                                   struct rocker_wait *wait, int offset)
 562 {
 563         struct pci_dev *pdev = rocker->pdev;
 564         unsigned char *alloc;
 565         unsigned char *buf;
 566         unsigned char *expect;
 567         dma_addr_t dma_handle;
 568         int i;
 569         int err;
 570
 571         alloc = kzalloc(ROCKER_TEST_DMA_BUF_SIZE * 2 + offset,
 572                         GFP_KERNEL | GFP_DMA);
 573         if (!alloc)
 574                 return -ENOMEM;
 575         buf = alloc + offset;
 576         expect = buf + ROCKER_TEST_DMA_BUF_SIZE;
 577
 578         dma_handle = pci_map_single(pdev, buf, ROCKER_TEST_DMA_BUF_SIZE,
 579                                     PCI_DMA_BIDIRECTIONAL);
 580         if (pci_dma_mapping_error(pdev, dma_handle)) {
 581                 err = -EIO;
 582                 goto free_alloc;
 583         }
 584
 585         rocker_write64(rocker, TEST_DMA_ADDR, dma_handle);
 586         rocker_write32(rocker, TEST_DMA_SIZE, ROCKER_TEST_DMA_BUF_SIZE);
 587
 588         memset(expect, ROCKER_TEST_DMA_FILL_PATTERN, ROCKER_TEST_DMA_BUF_SIZE);
 589         err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_FILL,
 590                                   dma_handle, buf, expect,
 591                                   ROCKER_TEST_DMA_BUF_SIZE);
 592         if (err)
 593                 goto unmap;
 594
 595         memset(expect, 0, ROCKER_TEST_DMA_BUF_SIZE);
 596         err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_CLEAR,
 597                                   dma_handle, buf, expect,
 598                                   ROCKER_TEST_DMA_BUF_SIZE);
 599         if (err)
 600                 goto unmap;
 601
 602         prandom_bytes(buf, ROCKER_TEST_DMA_BUF_SIZE);
 603         for (i = 0; i < ROCKER_TEST_DMA_BUF_SIZE; i++)
 604                 expect[i] = ~buf[i];
 605         err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_INVERT,
 606                                   dma_handle, buf, expect,
 607                                   ROCKER_TEST_DMA_BUF_SIZE);
 608         if (err)
 609                 goto unmap;
 610
 611 unmap:
 612         pci_unmap_single(pdev, dma_handle, ROCKER_TEST_DMA_BUF_SIZE,
 613                          PCI_DMA_BIDIRECTIONAL);
 614 free_alloc:
 615         kfree(alloc);
 616
 617         return err;
 618 }
 619
 620 static int rocker_dma_test(const struct rocker *rocker,
 621                            struct rocker_wait *wait)
 622 {
 623         int i;
 624         int err;
 625
 626         for (i = 0; i < 8; i++) {
 627                 err = rocker_dma_test_offset(rocker, wait, i);
 628                 if (err)
 629                         return err;
 630         }
 631         return 0;
 632 }
 633
 634 static irqreturn_t rocker_test_irq_handler(int irq, void *dev_id)
 635 {
 636         struct rocker_wait *wait = dev_id;
 637
 638         rocker_wait_wake_up(wait);
 639
 640         return IRQ_HANDLED;
 641 }
 642
 643 static int rocker_basic_hw_test(const struct rocker *rocker)
 644 {
 645         const struct pci_dev *pdev = rocker->pdev;
 646         struct rocker_wait wait;
 647         int err;
 648
 649         err = rocker_reg_test(rocker);
 650         if (err) {
 651                 dev_err(&pdev->dev, "reg test failed\n");
 652                 return err;
 653         }
 654
 655         err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_TEST),
 656                           rocker_test_irq_handler, 0,
 657                           rocker_driver_name, &wait);
 658         if (err) {
 659                 dev_err(&pdev->dev, "cannot assign test irq\n");
 660                 return err;
 661         }
 662
 663         rocker_wait_init(&wait);
 664         rocker_write32(rocker, TEST_IRQ, ROCKER_MSIX_VEC_TEST);
 665
 666         if (!rocker_wait_event_timeout(&wait, HZ / 10)) {
 667                 dev_err(&pdev->dev, "no interrupt received within a timeout\n");
 668                 err = -EIO;
 669                 goto free_irq;
 670         }
 671
 672         err = rocker_dma_test(rocker, &wait);
 673         if (err)
 674                 dev_err(&pdev->dev, "dma test failed\n");
 675
 676 free_irq:
 677         free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_TEST), &wait);
 678         return err;
 679 }
 680
 681 /******
 682  * TLV
 683  ******/
 684
 685 #define ROCKER_TLV_ALIGNTO 8U
 686 #define ROCKER_TLV_ALIGN(len) \
 687         (((len) + ROCKER_TLV_ALIGNTO - 1) & ~(ROCKER_TLV_ALIGNTO - 1))
 688 #define ROCKER_TLV_HDRLEN ROCKER_TLV_ALIGN(sizeof(struct rocker_tlv))
 689
 690 /*  <------- ROCKER_TLV_HDRLEN -------> <--- ROCKER_TLV_ALIGN(payload) --->
 691  * +-----------------------------+- - -+- - - - - - - - - - - - - - -+- - -+
 692  * |             Header          | Pad |           Payload           | Pad |
 693  * |      (struct rocker_tlv)    | ing |                             | ing |
 694  * +-----------------------------+- - -+- - - - - - - - - - - - - - -+- - -+
 695  *  <--------------------------- tlv->len -------------------------->
 696  */
 697
 698 static struct rocker_tlv *rocker_tlv_next(const struct rocker_tlv *tlv,
 699                                           int *remaining)
 700 {
 701         int totlen = ROCKER_TLV_ALIGN(tlv->len);
 702
 703         *remaining -= totlen;
 704         return (struct rocker_tlv *) ((char *) tlv + totlen);
 705 }
 706
 707 static int rocker_tlv_ok(const struct rocker_tlv *tlv, int remaining)
 708 {
 709         return remaining >= (int) ROCKER_TLV_HDRLEN &&
 710                tlv->len >= ROCKER_TLV_HDRLEN &&
 711                tlv->len <= remaining;
 712 }
 713
 714 #define rocker_tlv_for_each(pos, head, len, rem)        \
 715         for (pos = head, rem = len;                     \
 716              rocker_tlv_ok(pos, rem);                   \
 717              pos = rocker_tlv_next(pos, &(rem)))
 718
 719 #define rocker_tlv_for_each_nested(pos, tlv, rem)       \
 720         rocker_tlv_for_each(pos, rocker_tlv_data(tlv),  \
 721                             rocker_tlv_len(tlv), rem)
 722
 723 static int rocker_tlv_attr_size(int payload)
 724 {
 725         return ROCKER_TLV_HDRLEN + payload;
 726 }
 727
 728 static int rocker_tlv_total_size(int payload)
 729 {
 730         return ROCKER_TLV_ALIGN(rocker_tlv_attr_size(payload));
 731 }
 732
 733 static int rocker_tlv_padlen(int payload)
 734 {
 735         return rocker_tlv_total_size(payload) - rocker_tlv_attr_size(payload);
 736 }
 737
 738 static int rocker_tlv_type(const struct rocker_tlv *tlv)
 739 {
 740         return tlv->type;
 741 }
 742
 743 static void *rocker_tlv_data(const struct rocker_tlv *tlv)
 744 {
 745         return (char *) tlv + ROCKER_TLV_HDRLEN;
 746 }
 747
 748 static int rocker_tlv_len(const struct rocker_tlv *tlv)
 749 {
 750         return tlv->len - ROCKER_TLV_HDRLEN;
 751 }
 752
 753 static u8 rocker_tlv_get_u8(const struct rocker_tlv *tlv)
 754 {
 755         return *(u8 *) rocker_tlv_data(tlv);
 756 }
 757
 758 static u16 rocker_tlv_get_u16(const struct rocker_tlv *tlv)
 759 {
 760         return *(u16 *) rocker_tlv_data(tlv);
 761 }
 762
 763 static __be16 rocker_tlv_get_be16(const struct rocker_tlv *tlv)
 764 {
 765         return *(__be16 *) rocker_tlv_data(tlv);
 766 }
 767
 768 static u32 rocker_tlv_get_u32(const struct rocker_tlv *tlv)
 769 {
 770         return *(u32 *) rocker_tlv_data(tlv);
 771 }
 772
 773 static u64 rocker_tlv_get_u64(const struct rocker_tlv *tlv)
 774 {
 775         return *(u64 *) rocker_tlv_data(tlv);
 776 }
 777
 778 static void rocker_tlv_parse(const struct rocker_tlv **tb, int maxtype,
 779                              const char *buf, int buf_len)
 780 {
 781         const struct rocker_tlv *tlv;
 782         const struct rocker_tlv *head = (const struct rocker_tlv *) buf;
 783         int rem;
 784
 785         memset(tb, 0, sizeof(struct rocker_tlv *) * (maxtype + 1));
 786
 787         rocker_tlv_for_each(tlv, head, buf_len, rem) {
 788                 u32 type = rocker_tlv_type(tlv);
 789
 790                 if (type > 0 && type <= maxtype)
 791                         tb[type] = tlv;
 792         }
 793 }
 794
 795 static void rocker_tlv_parse_nested(const struct rocker_tlv **tb, int maxtype,
 796                                     const struct rocker_tlv *tlv)
 797 {
 798         rocker_tlv_parse(tb, maxtype, rocker_tlv_data(tlv),
 799                          rocker_tlv_len(tlv));
 800 }
 801
 802 static void rocker_tlv_parse_desc(const struct rocker_tlv **tb, int maxtype,
 803                                   const struct rocker_desc_info *desc_info)
 804 {
 805         rocker_tlv_parse(tb, maxtype, desc_info->data,
 806                          desc_info->desc->tlv_size);
 807 }
 808
 809 static struct rocker_tlv *rocker_tlv_start(struct rocker_desc_info *desc_info)
 810 {
 811         return (struct rocker_tlv *) ((char *) desc_info->data +
 812                                                desc_info->tlv_size);
 813 }
 814
 815 static int rocker_tlv_put(struct rocker_desc_info *desc_info,
 816                           int attrtype, int attrlen, const void *data)
 817 {
 818         int tail_room = desc_info->data_size - desc_info->tlv_size;
 819         int total_size = rocker_tlv_total_size(attrlen);
 820         struct rocker_tlv *tlv;
 821
 822         if (unlikely(tail_room < total_size))
 823                 return -EMSGSIZE;
 824
 825         tlv = rocker_tlv_start(desc_info);
 826         desc_info->tlv_size += total_size;
 827         tlv->type = attrtype;
 828         tlv->len = rocker_tlv_attr_size(attrlen);
 829         memcpy(rocker_tlv_data(tlv), data, attrlen);
 830         memset((char *) tlv + tlv->len, 0, rocker_tlv_padlen(attrlen));
 831         return 0;
 832 }
 833
 834 static int rocker_tlv_put_u8(struct rocker_desc_info *desc_info,
 835                              int attrtype, u8 value)
 836 {
 837         return rocker_tlv_put(desc_info, attrtype, sizeof(u8), &value);
 838 }
 839
 840 static int rocker_tlv_put_u16(struct rocker_desc_info *desc_info,
 841                               int attrtype, u16 value)
 842 {
 843         return rocker_tlv_put(desc_info, attrtype, sizeof(u16), &value);
 844 }
 845
 846 static int rocker_tlv_put_be16(struct rocker_desc_info *desc_info,
 847                                int attrtype, __be16 value)
 848 {
 849         return rocker_tlv_put(desc_info, attrtype, sizeof(__be16), &value);
 850 }
 851
 852 static int rocker_tlv_put_u32(struct rocker_desc_info *desc_info,
 853                               int attrtype, u32 value)
 854 {
 855         return rocker_tlv_put(desc_info, attrtype, sizeof(u32), &value);
 856 }
 857
 858 static int rocker_tlv_put_be32(struct rocker_desc_info *desc_info,
 859                                int attrtype, __be32 value)
 860 {
 861         return rocker_tlv_put(desc_info, attrtype, sizeof(__be32), &value);
 862 }
 863
 864 static int rocker_tlv_put_u64(struct rocker_desc_info *desc_info,
 865                               int attrtype, u64 value)
 866 {
 867         return rocker_tlv_put(desc_info, attrtype, sizeof(u64), &value);
 868 }
 869
 870 static struct rocker_tlv *
 871 rocker_tlv_nest_start(struct rocker_desc_info *desc_info, int attrtype)
 872 {
 873         struct rocker_tlv *start = rocker_tlv_start(desc_info);
 874
 875         if (rocker_tlv_put(desc_info, attrtype, 0, NULL) < 0)
 876                 return NULL;
 877
 878         return start;
 879 }
 880
 881 static void rocker_tlv_nest_end(struct rocker_desc_info *desc_info,
 882                                 struct rocker_tlv *start)
 883 {
 884         start->len = (char *) rocker_tlv_start(desc_info) - (char *) start;
 885 }
 886
 887 static void rocker_tlv_nest_cancel(struct rocker_desc_info *desc_info,
 888                                    const struct rocker_tlv *start)
 889 {
 890         desc_info->tlv_size = (const char *) start - desc_info->data;
 891 }
 892
 893 /******************************************
 894  * DMA rings and descriptors manipulations
 895  ******************************************/
 896
 897 static u32 __pos_inc(u32 pos, size_t limit)
 898 {
 899         return ++pos == limit ? 0 : pos;
 900 }
 901
 902 static int rocker_desc_err(const struct rocker_desc_info *desc_info)
 903 {
 904         int err = desc_info->desc->comp_err & ~ROCKER_DMA_DESC_COMP_ERR_GEN;
 905
 906         switch (err) {
 907         case ROCKER_OK:
 908                 return 0;
 909         case -ROCKER_ENOENT:
 910                 return -ENOENT;
 911         case -ROCKER_ENXIO:
 912                 return -ENXIO;
 913         case -ROCKER_ENOMEM:
 914                 return -ENOMEM;
 915         case -ROCKER_EEXIST:
 916                 return -EEXIST;
 917         case -ROCKER_EINVAL:
 918                 return -EINVAL;
 919         case -ROCKER_EMSGSIZE:
 920                 return -EMSGSIZE;
 921         case -ROCKER_ENOTSUP:
 922                 return -EOPNOTSUPP;
 923         case -ROCKER_ENOBUFS:
 924                 return -ENOBUFS;
 925         }
 926
 927         return -EINVAL;
 928 }
 929
 930 static void rocker_desc_gen_clear(const struct rocker_desc_info *desc_info)
 931 {
 932         desc_info->desc->comp_err &= ~ROCKER_DMA_DESC_COMP_ERR_GEN;
 933 }
 934
 935 static bool rocker_desc_gen(const struct rocker_desc_info *desc_info)
 936 {
 937         u32 comp_err = desc_info->desc->comp_err;
 938
 939         return comp_err & ROCKER_DMA_DESC_COMP_ERR_GEN ? true : false;
 940 }
 941
 942 static void *rocker_desc_cookie_ptr_get(const struct rocker_desc_info *desc_info)
 943 {
 944         return (void *)(uintptr_t)desc_info->desc->cookie;
 945 }
 946
 947 static void rocker_desc_cookie_ptr_set(const struct rocker_desc_info *desc_info,
 948                                        void *ptr)
 949 {
 950         desc_info->desc->cookie = (uintptr_t) ptr;
 951 }
 952
 953 static struct rocker_desc_info *
 954 rocker_desc_head_get(const struct rocker_dma_ring_info *info)
 955 {
 956         static struct rocker_desc_info *desc_info;
 957         u32 head = __pos_inc(info->head, info->size);
 958
 959         desc_info = &info->desc_info[info->head];
 960         if (head == info->tail)
 961                 return NULL; /* ring full */
 962         desc_info->tlv_size = 0;
 963         return desc_info;
 964 }
 965
 966 static void rocker_desc_commit(const struct rocker_desc_info *desc_info)
 967 {
 968         desc_info->desc->buf_size = desc_info->data_size;
 969         desc_info->desc->tlv_size = desc_info->tlv_size;
 970 }
 971
 972 static void rocker_desc_head_set(const struct rocker *rocker,
 973                                  struct rocker_dma_ring_info *info,
 974                                  const struct rocker_desc_info *desc_info)
 975 {
 976         u32 head = __pos_inc(info->head, info->size);
 977
 978         BUG_ON(head == info->tail);
 979         rocker_desc_commit(desc_info);
 980         info->head = head;
 981         rocker_write32(rocker, DMA_DESC_HEAD(info->type), head);
 982 }
 983
 984 static struct rocker_desc_info *
 985 rocker_desc_tail_get(struct rocker_dma_ring_info *info)
 986 {
 987         static struct rocker_desc_info *desc_info;
 988
 989         if (info->tail == info->head)
 990                 return NULL; /* nothing to be done between head and tail */
 991         desc_info = &info->desc_info[info->tail];
 992         if (!rocker_desc_gen(desc_info))
 993                 return NULL; /* gen bit not set, desc is not ready yet */
 994         info->tail = __pos_inc(info->tail, info->size);
 995         desc_info->tlv_size = desc_info->desc->tlv_size;
 996         return desc_info;
 997 }
 998
 999 static void rocker_dma_ring_credits_set(const struct rocker *rocker,
1000                                         const struct rocker_dma_ring_info *info,
1001                                         u32 credits)
1002 {
1003         if (credits)
1004                 rocker_write32(rocker, DMA_DESC_CREDITS(info->type), credits);
1005 }
1006
1007 static unsigned long rocker_dma_ring_size_fix(size_t size)
1008 {
1009         return max(ROCKER_DMA_SIZE_MIN,
1010                    min(roundup_pow_of_two(size), ROCKER_DMA_SIZE_MAX));
1011 }
1012
1013 static int rocker_dma_ring_create(const struct rocker *rocker,
1014                                   unsigned int type,
1015                                   size_t size,
1016                                   struct rocker_dma_ring_info *info)
1017 {
1018         int i;
1019
1020         BUG_ON(size != rocker_dma_ring_size_fix(size));
1021         info->size = size;
1022         info->type = type;
1023         info->head = 0;
1024         info->tail = 0;
1025         info->desc_info = kcalloc(info->size, sizeof(*info->desc_info),
1026                                   GFP_KERNEL);
1027         if (!info->desc_info)
1028                 return -ENOMEM;
1029
1030         info->desc = pci_alloc_consistent(rocker->pdev,
1031                                           info->size * sizeof(*info->desc),
1032                                           &info->mapaddr);
1033         if (!info->desc) {
1034                 kfree(info->desc_info);
1035                 return -ENOMEM;
1036         }
1037
1038         for (i = 0; i < info->size; i++)
1039                 info->desc_info[i].desc = &info->desc[i];
1040
1041         rocker_write32(rocker, DMA_DESC_CTRL(info->type),
1042                        ROCKER_DMA_DESC_CTRL_RESET);
1043         rocker_write64(rocker, DMA_DESC_ADDR(info->type), info->mapaddr);
1044         rocker_write32(rocker, DMA_DESC_SIZE(info->type), info->size);
1045
1046         return 0;
1047 }
1048
1049 static void rocker_dma_ring_destroy(const struct rocker *rocker,
1050                                     const struct rocker_dma_ring_info *info)
1051 {
1052         rocker_write64(rocker, DMA_DESC_ADDR(info->type), 0);
1053
1054         pci_free_consistent(rocker->pdev,
1055                             info->size * sizeof(struct rocker_desc),
1056                             info->desc, info->mapaddr);
1057         kfree(info->desc_info);
1058 }
1059
1060 static void rocker_dma_ring_pass_to_producer(const struct rocker *rocker,
1061                                              struct rocker_dma_ring_info *info)
1062 {
1063         int i;
1064
1065         BUG_ON(info->head || info->tail);
1066
1067         /* When ring is consumer, we need to advance head for each desc.
1068          * That tells hw that the desc is ready to be used by it.
1069          */
1070         for (i = 0; i < info->size - 1; i++)
1071                 rocker_desc_head_set(rocker, info, &info->desc_info[i]);
1072         rocker_desc_commit(&info->desc_info[i]);
1073 }
1074
1075 static int rocker_dma_ring_bufs_alloc(const struct rocker *rocker,
1076                                       const struct rocker_dma_ring_info *info,
1077                                       int direction, size_t buf_size)
1078 {
1079         struct pci_dev *pdev = rocker->pdev;
1080         int i;
1081         int err;
1082
1083         for (i = 0; i < info->size; i++) {
1084                 struct rocker_desc_info *desc_info = &info->desc_info[i];
1085                 struct rocker_desc *desc = &info->desc[i];
1086                 dma_addr_t dma_handle;
1087                 char *buf;
1088
1089                 buf = kzalloc(buf_size, GFP_KERNEL | GFP_DMA);
1090                 if (!buf) {
1091                         err = -ENOMEM;
1092                         goto rollback;
1093                 }
1094
1095                 dma_handle = pci_map_single(pdev, buf, buf_size, direction);
1096                 if (pci_dma_mapping_error(pdev, dma_handle)) {
1097                         kfree(buf);
1098                         err = -EIO;
1099                         goto rollback;
1100                 }
1101
1102                 desc_info->data = buf;
1103                 desc_info->data_size = buf_size;
1104                 dma_unmap_addr_set(desc_info, mapaddr, dma_handle);
1105
1106                 desc->buf_addr = dma_handle;
1107                 desc->buf_size = buf_size;
1108         }
1109         return 0;
1110
1111 rollback:
1112         for (i--; i >= 0; i--) {
1113                 const struct rocker_desc_info *desc_info = &info->desc_info[i];
1114
1115                 pci_unmap_single(pdev, dma_unmap_addr(desc_info, mapaddr),
1116                                  desc_info->data_size, direction);
1117                 kfree(desc_info->data);
1118         }
1119         return err;
1120 }
1121
1122 static void rocker_dma_ring_bufs_free(const struct rocker *rocker,
1123                                       const struct rocker_dma_ring_info *info,
1124                                       int direction)
1125 {
1126         struct pci_dev *pdev = rocker->pdev;
1127         int i;
1128
1129         for (i = 0; i < info->size; i++) {
1130                 const struct rocker_desc_info *desc_info = &info->desc_info[i];
1131                 struct rocker_desc *desc = &info->desc[i];
1132
1133                 desc->buf_addr = 0;
1134                 desc->buf_size = 0;
1135                 pci_unmap_single(pdev, dma_unmap_addr(desc_info, mapaddr),
1136                                  desc_info->data_size, direction);
1137                 kfree(desc_info->data);
1138         }
1139 }
1140
1141 static int rocker_dma_rings_init(struct rocker *rocker)
1142 {
1143         const struct pci_dev *pdev = rocker->pdev;
1144         int err;
1145
1146         err = rocker_dma_ring_create(rocker, ROCKER_DMA_CMD,
1147                                      ROCKER_DMA_CMD_DEFAULT_SIZE,
1148                                      &rocker->cmd_ring);
1149         if (err) {
1150                 dev_err(&pdev->dev, "failed to create command dma ring\n");
1151                 return err;
1152         }
1153
1154         spin_lock_init(&rocker->cmd_ring_lock);
1155
1156         err = rocker_dma_ring_bufs_alloc(rocker, &rocker->cmd_ring,
1157                                          PCI_DMA_BIDIRECTIONAL, PAGE_SIZE);
1158         if (err) {
1159                 dev_err(&pdev->dev, "failed to alloc command dma ring buffers\n");
1160                 goto err_dma_cmd_ring_bufs_alloc;
1161         }
1162
1163         err = rocker_dma_ring_create(rocker, ROCKER_DMA_EVENT,
1164                                      ROCKER_DMA_EVENT_DEFAULT_SIZE,
1165                                      &rocker->event_ring);
1166         if (err) {
1167                 dev_err(&pdev->dev, "failed to create event dma ring\n");
1168                 goto err_dma_event_ring_create;
1169         }
1170
1171         err = rocker_dma_ring_bufs_alloc(rocker, &rocker->event_ring,
1172                                          PCI_DMA_FROMDEVICE, PAGE_SIZE);
1173         if (err) {
1174                 dev_err(&pdev->dev, "failed to alloc event dma ring buffers\n");
1175                 goto err_dma_event_ring_bufs_alloc;
1176         }
1177         rocker_dma_ring_pass_to_producer(rocker, &rocker->event_ring);
1178         return 0;
1179
1180 err_dma_event_ring_bufs_alloc:
1181         rocker_dma_ring_destroy(rocker, &rocker->event_ring);
1182 err_dma_event_ring_create:
1183         rocker_dma_ring_bufs_free(rocker, &rocker->cmd_ring,
1184                                   PCI_DMA_BIDIRECTIONAL);
1185 err_dma_cmd_ring_bufs_alloc:
1186         rocker_dma_ring_destroy(rocker, &rocker->cmd_ring);
1187         return err;
1188 }
1189
1190 static void rocker_dma_rings_fini(struct rocker *rocker)
1191 {
1192         rocker_dma_ring_bufs_free(rocker, &rocker->event_ring,
1193                                   PCI_DMA_BIDIRECTIONAL);
1194         rocker_dma_ring_destroy(rocker, &rocker->event_ring);
1195         rocker_dma_ring_bufs_free(rocker, &rocker->cmd_ring,
1196                                   PCI_DMA_BIDIRECTIONAL);
1197         rocker_dma_ring_destroy(rocker, &rocker->cmd_ring);
1198 }
1199
1200 static int rocker_dma_rx_ring_skb_map(const struct rocker_port *rocker_port,
1201                                       struct rocker_desc_info *desc_info,
1202                                       struct sk_buff *skb, size_t buf_len)
1203 {
1204         const struct rocker *rocker = rocker_port->rocker;
1205         struct pci_dev *pdev = rocker->pdev;
1206         dma_addr_t dma_handle;
1207
1208         dma_handle = pci_map_single(pdev, skb->data, buf_len,
1209                                     PCI_DMA_FROMDEVICE);
1210         if (pci_dma_mapping_error(pdev, dma_handle))
1211                 return -EIO;
1212         if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_RX_FRAG_ADDR, dma_handle))
1213                 goto tlv_put_failure;
1214         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_RX_FRAG_MAX_LEN, buf_len))
1215                 goto tlv_put_failure;
1216         return 0;
1217
1218 tlv_put_failure:
1219         pci_unmap_single(pdev, dma_handle, buf_len, PCI_DMA_FROMDEVICE);
1220         desc_info->tlv_size = 0;
1221         return -EMSGSIZE;
1222 }
1223
1224 static size_t rocker_port_rx_buf_len(const struct rocker_port *rocker_port)
1225 {
1226         return rocker_port->dev->mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
1227 }
1228
1229 static int rocker_dma_rx_ring_skb_alloc(const struct rocker_port *rocker_port,
1230                                         struct rocker_desc_info *desc_info)
1231 {
1232         struct net_device *dev = rocker_port->dev;
1233         struct sk_buff *skb;
1234         size_t buf_len = rocker_port_rx_buf_len(rocker_port);
1235         int err;
1236
1237         /* Ensure that hw will see tlv_size zero in case of an error.
1238          * That tells hw to use another descriptor.
1239          */
1240         rocker_desc_cookie_ptr_set(desc_info, NULL);
1241         desc_info->tlv_size = 0;
1242
1243         skb = netdev_alloc_skb_ip_align(dev, buf_len);
1244         if (!skb)
1245                 return -ENOMEM;
1246         err = rocker_dma_rx_ring_skb_map(rocker_port, desc_info, skb, buf_len);
1247         if (err) {
1248                 dev_kfree_skb_any(skb);
1249                 return err;
1250         }
1251         rocker_desc_cookie_ptr_set(desc_info, skb);
1252         return 0;
1253 }
1254
1255 static void rocker_dma_rx_ring_skb_unmap(const struct rocker *rocker,
1256                                          const struct rocker_tlv **attrs)
1257 {
1258         struct pci_dev *pdev = rocker->pdev;
1259         dma_addr_t dma_handle;
1260         size_t len;
1261
1262         if (!attrs[ROCKER_TLV_RX_FRAG_ADDR] ||
1263             !attrs[ROCKER_TLV_RX_FRAG_MAX_LEN])
1264                 return;
1265         dma_handle = rocker_tlv_get_u64(attrs[ROCKER_TLV_RX_FRAG_ADDR]);
1266         len = rocker_tlv_get_u16(attrs[ROCKER_TLV_RX_FRAG_MAX_LEN]);
1267         pci_unmap_single(pdev, dma_handle, len, PCI_DMA_FROMDEVICE);
1268 }
1269
1270 static void rocker_dma_rx_ring_skb_free(const struct rocker *rocker,
1271                                         const struct rocker_desc_info *desc_info)
1272 {
1273         const struct rocker_tlv *attrs[ROCKER_TLV_RX_MAX + 1];
1274         struct sk_buff *skb = rocker_desc_cookie_ptr_get(desc_info);
1275
1276         if (!skb)
1277                 return;
1278         rocker_tlv_parse_desc(attrs, ROCKER_TLV_RX_MAX, desc_info);
1279         rocker_dma_rx_ring_skb_unmap(rocker, attrs);
1280         dev_kfree_skb_any(skb);
1281 }
1282
1283 static int rocker_dma_rx_ring_skbs_alloc(const struct rocker_port *rocker_port)
1284 {
1285         const struct rocker_dma_ring_info *rx_ring = &rocker_port->rx_ring;
1286         const struct rocker *rocker = rocker_port->rocker;
1287         int i;
1288         int err;
1289
1290         for (i = 0; i < rx_ring->size; i++) {
1291                 err = rocker_dma_rx_ring_skb_alloc(rocker_port,
1292                                                    &rx_ring->desc_info[i]);
1293                 if (err)
1294                         goto rollback;
1295         }
1296         return 0;
1297
1298 rollback:
1299         for (i--; i >= 0; i--)
1300                 rocker_dma_rx_ring_skb_free(rocker, &rx_ring->desc_info[i]);
1301         return err;
1302 }
1303
1304 static void rocker_dma_rx_ring_skbs_free(const struct rocker_port *rocker_port)
1305 {
1306         const struct rocker_dma_ring_info *rx_ring = &rocker_port->rx_ring;
1307         const struct rocker *rocker = rocker_port->rocker;
1308         int i;
1309
1310         for (i = 0; i < rx_ring->size; i++)
1311                 rocker_dma_rx_ring_skb_free(rocker, &rx_ring->desc_info[i]);
1312 }
1313
1314 static int rocker_port_dma_rings_init(struct rocker_port *rocker_port)
1315 {
1316         struct rocker *rocker = rocker_port->rocker;
1317         int err;
1318
1319         err = rocker_dma_ring_create(rocker,
1320                                      ROCKER_DMA_TX(rocker_port->port_number),
1321                                      ROCKER_DMA_TX_DEFAULT_SIZE,
1322                                      &rocker_port->tx_ring);
1323         if (err) {
1324                 netdev_err(rocker_port->dev, "failed to create tx dma ring\n");
1325                 return err;
1326         }
1327
1328         err = rocker_dma_ring_bufs_alloc(rocker, &rocker_port->tx_ring,
1329                                          PCI_DMA_TODEVICE,
1330                                          ROCKER_DMA_TX_DESC_SIZE);
1331         if (err) {
1332                 netdev_err(rocker_port->dev, "failed to alloc tx dma ring buffers\n");
1333                 goto err_dma_tx_ring_bufs_alloc;
1334         }
1335
1336         err = rocker_dma_ring_create(rocker,
1337                                      ROCKER_DMA_RX(rocker_port->port_number),
1338                                      ROCKER_DMA_RX_DEFAULT_SIZE,
1339                                      &rocker_port->rx_ring);
1340         if (err) {
1341                 netdev_err(rocker_port->dev, "failed to create rx dma ring\n");
1342                 goto err_dma_rx_ring_create;
1343         }
1344
1345         err = rocker_dma_ring_bufs_alloc(rocker, &rocker_port->rx_ring,
1346                                          PCI_DMA_BIDIRECTIONAL,
1347                                          ROCKER_DMA_RX_DESC_SIZE);
1348         if (err) {
1349                 netdev_err(rocker_port->dev, "failed to alloc rx dma ring buffers\n");
1350                 goto err_dma_rx_ring_bufs_alloc;
1351         }
1352
1353         err = rocker_dma_rx_ring_skbs_alloc(rocker_port);
1354         if (err) {
1355                 netdev_err(rocker_port->dev, "failed to alloc rx dma ring skbs\n");
1356                 goto err_dma_rx_ring_skbs_alloc;
1357         }
1358         rocker_dma_ring_pass_to_producer(rocker, &rocker_port->rx_ring);
1359
1360         return 0;
1361
1362 err_dma_rx_ring_skbs_alloc:
1363         rocker_dma_ring_bufs_free(rocker, &rocker_port->rx_ring,
1364                                   PCI_DMA_BIDIRECTIONAL);
1365 err_dma_rx_ring_bufs_alloc:
1366         rocker_dma_ring_destroy(rocker, &rocker_port->rx_ring);
1367 err_dma_rx_ring_create:
1368         rocker_dma_ring_bufs_free(rocker, &rocker_port->tx_ring,
1369                                   PCI_DMA_TODEVICE);
1370 err_dma_tx_ring_bufs_alloc:
1371         rocker_dma_ring_destroy(rocker, &rocker_port->tx_ring);
1372         return err;
1373 }
1374
1375 static void rocker_port_dma_rings_fini(struct rocker_port *rocker_port)
1376 {
1377         struct rocker *rocker = rocker_port->rocker;
1378
1379         rocker_dma_rx_ring_skbs_free(rocker_port);
1380         rocker_dma_ring_bufs_free(rocker, &rocker_port->rx_ring,
1381                                   PCI_DMA_BIDIRECTIONAL);
1382         rocker_dma_ring_destroy(rocker, &rocker_port->rx_ring);
1383         rocker_dma_ring_bufs_free(rocker, &rocker_port->tx_ring,
1384                                   PCI_DMA_TODEVICE);
1385         rocker_dma_ring_destroy(rocker, &rocker_port->tx_ring);
1386 }
1387
1388 static void rocker_port_set_enable(const struct rocker_port *rocker_port,
1389                                    bool enable)
1390 {
1391         u64 val = rocker_read64(rocker_port->rocker, PORT_PHYS_ENABLE);
1392
1393         if (enable)
1394                 val |= 1ULL << rocker_port->pport;
1395         else
1396                 val &= ~(1ULL << rocker_port->pport);
1397         rocker_write64(rocker_port->rocker, PORT_PHYS_ENABLE, val);
1398 }
1399
1400 /********************************
1401  * Interrupt handler and helpers
1402  ********************************/
1403
1404 static irqreturn_t rocker_cmd_irq_handler(int irq, void *dev_id)
1405 {
1406         struct rocker *rocker = dev_id;
1407         const struct rocker_desc_info *desc_info;
1408         struct rocker_wait *wait;
1409         u32 credits = 0;
1410
1411         spin_lock(&rocker->cmd_ring_lock);
1412         while ((desc_info = rocker_desc_tail_get(&rocker->cmd_ring))) {
1413                 wait = rocker_desc_cookie_ptr_get(desc_info);
1414                 if (wait->nowait) {
1415                         rocker_desc_gen_clear(desc_info);
1416                         rocker_wait_destroy(SWITCHDEV_TRANS_NONE, wait);
1417                 } else {
1418                         rocker_wait_wake_up(wait);
1419                 }
1420                 credits++;
1421         }
1422         spin_unlock(&rocker->cmd_ring_lock);
1423         rocker_dma_ring_credits_set(rocker, &rocker->cmd_ring, credits);
1424
1425         return IRQ_HANDLED;
1426 }
1427
1428 static void rocker_port_link_up(const struct rocker_port *rocker_port)
1429 {
1430         netif_carrier_on(rocker_port->dev);
1431         netdev_info(rocker_port->dev, "Link is up\n");
1432 }
1433
1434 static void rocker_port_link_down(const struct rocker_port *rocker_port)
1435 {
1436         netif_carrier_off(rocker_port->dev);
1437         netdev_info(rocker_port->dev, "Link is down\n");
1438 }
1439
1440 static int rocker_event_link_change(const struct rocker *rocker,
1441                                     const struct rocker_tlv *info)
1442 {
1443         const struct rocker_tlv *attrs[ROCKER_TLV_EVENT_LINK_CHANGED_MAX + 1];
1444         unsigned int port_number;
1445         bool link_up;
1446         struct rocker_port *rocker_port;
1447
1448         rocker_tlv_parse_nested(attrs, ROCKER_TLV_EVENT_LINK_CHANGED_MAX, info);
1449         if (!attrs[ROCKER_TLV_EVENT_LINK_CHANGED_PPORT] ||
1450             !attrs[ROCKER_TLV_EVENT_LINK_CHANGED_LINKUP])
1451                 return -EIO;
1452         port_number =
1453                 rocker_tlv_get_u32(attrs[ROCKER_TLV_EVENT_LINK_CHANGED_PPORT]) - 1;
1454         link_up = rocker_tlv_get_u8(attrs[ROCKER_TLV_EVENT_LINK_CHANGED_LINKUP]);
1455
1456         if (port_number >= rocker->port_count)
1457                 return -EINVAL;
1458
1459         rocker_port = rocker->ports[port_number];
1460         if (netif_carrier_ok(rocker_port->dev) != link_up) {
1461                 if (link_up)
1462                         rocker_port_link_up(rocker_port);
1463                 else
1464                         rocker_port_link_down(rocker_port);
1465         }
1466
1467         return 0;
1468 }
1469
1470 static int rocker_port_fdb(struct rocker_port *rocker_port,
1471                            enum switchdev_trans trans,
1472                            const unsigned char *addr,
1473                            __be16 vlan_id, int flags);
1474
1475 static int rocker_event_mac_vlan_seen(const struct rocker *rocker,
1476                                       const struct rocker_tlv *info)
1477 {
1478         const struct rocker_tlv *attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAX + 1];
1479         unsigned int port_number;
1480         struct rocker_port *rocker_port;
1481         const unsigned char *addr;
1482         int flags = ROCKER_OP_FLAG_NOWAIT | ROCKER_OP_FLAG_LEARNED;
1483         __be16 vlan_id;
1484
1485         rocker_tlv_parse_nested(attrs, ROCKER_TLV_EVENT_MAC_VLAN_MAX, info);
1486         if (!attrs[ROCKER_TLV_EVENT_MAC_VLAN_PPORT] ||
1487             !attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAC] ||
1488             !attrs[ROCKER_TLV_EVENT_MAC_VLAN_VLAN_ID])
1489                 return -EIO;
1490         port_number =
1491                 rocker_tlv_get_u32(attrs[ROCKER_TLV_EVENT_MAC_VLAN_PPORT]) - 1;
1492         addr = rocker_tlv_data(attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAC]);
1493         vlan_id = rocker_tlv_get_be16(attrs[ROCKER_TLV_EVENT_MAC_VLAN_VLAN_ID]);
1494
1495         if (port_number >= rocker->port_count)
1496                 return -EINVAL;
1497
1498         rocker_port = rocker->ports[port_number];
1499
1500         if (rocker_port->stp_state != BR_STATE_LEARNING &&
1501             rocker_port->stp_state != BR_STATE_FORWARDING)
1502                 return 0;
1503
1504         return rocker_port_fdb(rocker_port, SWITCHDEV_TRANS_NONE,
1505                                addr, vlan_id, flags);
1506 }
1507
1508 static int rocker_event_process(const struct rocker *rocker,
1509                                 const struct rocker_desc_info *desc_info)
1510 {
1511         const struct rocker_tlv *attrs[ROCKER_TLV_EVENT_MAX + 1];
1512         const struct rocker_tlv *info;
1513         u16 type;
1514
1515         rocker_tlv_parse_desc(attrs, ROCKER_TLV_EVENT_MAX, desc_info);
1516         if (!attrs[ROCKER_TLV_EVENT_TYPE] ||
1517             !attrs[ROCKER_TLV_EVENT_INFO])
1518                 return -EIO;
1519
1520         type = rocker_tlv_get_u16(attrs[ROCKER_TLV_EVENT_TYPE]);
1521         info = attrs[ROCKER_TLV_EVENT_INFO];
1522
1523         switch (type) {
1524         case ROCKER_TLV_EVENT_TYPE_LINK_CHANGED:
1525                 return rocker_event_link_change(rocker, info);
1526         case ROCKER_TLV_EVENT_TYPE_MAC_VLAN_SEEN:
1527                 return rocker_event_mac_vlan_seen(rocker, info);
1528         }
1529
1530         return -EOPNOTSUPP;
1531 }
1532
1533 static irqreturn_t rocker_event_irq_handler(int irq, void *dev_id)
1534 {
1535         struct rocker *rocker = dev_id;
1536         const struct pci_dev *pdev = rocker->pdev;
1537         const struct rocker_desc_info *desc_info;
1538         u32 credits = 0;
1539         int err;
1540
1541         while ((desc_info = rocker_desc_tail_get(&rocker->event_ring))) {
1542                 err = rocker_desc_err(desc_info);
1543                 if (err) {
1544                         dev_err(&pdev->dev, "event desc received with err %d\n",
1545                                 err);
1546                 } else {
1547                         err = rocker_event_process(rocker, desc_info);
1548                         if (err)
1549                                 dev_err(&pdev->dev, "event processing failed with err %d\n",
1550                                         err);
1551                 }
1552                 rocker_desc_gen_clear(desc_info);
1553                 rocker_desc_head_set(rocker, &rocker->event_ring, desc_info);
1554                 credits++;
1555         }
1556         rocker_dma_ring_credits_set(rocker, &rocker->event_ring, credits);
1557
1558         return IRQ_HANDLED;
1559 }
1560
1561 static irqreturn_t rocker_tx_irq_handler(int irq, void *dev_id)
1562 {
1563         struct rocker_port *rocker_port = dev_id;
1564
1565         napi_schedule(&rocker_port->napi_tx);
1566         return IRQ_HANDLED;
1567 }
1568
1569 static irqreturn_t rocker_rx_irq_handler(int irq, void *dev_id)
1570 {
1571         struct rocker_port *rocker_port = dev_id;
1572
1573         napi_schedule(&rocker_port->napi_rx);
1574         return IRQ_HANDLED;
1575 }
1576
1577 /********************
1578  * Command interface
1579  ********************/
1580
1581 typedef int (*rocker_cmd_prep_cb_t)(const struct rocker_port *rocker_port,
1582                                     struct rocker_desc_info *desc_info,
1583                                     void *priv);
1584
1585 typedef int (*rocker_cmd_proc_cb_t)(const struct rocker_port *rocker_port,
1586                                     const struct rocker_desc_info *desc_info,
1587                                     void *priv);
1588
1589 static int rocker_cmd_exec(struct rocker_port *rocker_port,
1590                            enum switchdev_trans trans, int flags,
1591                            rocker_cmd_prep_cb_t prepare, void *prepare_priv,
1592                            rocker_cmd_proc_cb_t process, void *process_priv)
1593 {
1594         struct rocker *rocker = rocker_port->rocker;
1595         struct rocker_desc_info *desc_info;
1596         struct rocker_wait *wait;
1597         bool nowait = !!(flags & ROCKER_OP_FLAG_NOWAIT);
1598         unsigned long lock_flags;
1599         int err;
1600
1601         wait = rocker_wait_create(rocker_port, trans, flags);
1602         if (!wait)
1603                 return -ENOMEM;
1604         wait->nowait = nowait;
1605
1606         spin_lock_irqsave(&rocker->cmd_ring_lock, lock_flags);
1607
1608         desc_info = rocker_desc_head_get(&rocker->cmd_ring);
1609         if (!desc_info) {
1610                 spin_unlock_irqrestore(&rocker->cmd_ring_lock, lock_flags);
1611                 err = -EAGAIN;
1612                 goto out;
1613         }
1614
1615         err = prepare(rocker_port, desc_info, prepare_priv);
1616         if (err) {
1617                 spin_unlock_irqrestore(&rocker->cmd_ring_lock, lock_flags);
1618                 goto out;
1619         }
1620
1621         rocker_desc_cookie_ptr_set(desc_info, wait);
1622
1623         if (trans != SWITCHDEV_TRANS_PREPARE)
1624                 rocker_desc_head_set(rocker, &rocker->cmd_ring, desc_info);
1625
1626         spin_unlock_irqrestore(&rocker->cmd_ring_lock, lock_flags);
1627
1628         if (nowait)
1629                 return 0;
1630
1631         if (trans != SWITCHDEV_TRANS_PREPARE)
1632                 if (!rocker_wait_event_timeout(wait, HZ / 10))
1633                         return -EIO;
1634
1635         err = rocker_desc_err(desc_info);
1636         if (err)
1637                 return err;
1638
1639         if (process)
1640                 err = process(rocker_port, desc_info, process_priv);
1641
1642         rocker_desc_gen_clear(desc_info);
1643 out:
1644         rocker_wait_destroy(trans, wait);
1645         return err;
1646 }
1647
1648 static int
1649 rocker_cmd_get_port_settings_prep(const struct rocker_port *rocker_port,
1650                                   struct rocker_desc_info *desc_info,
1651                                   void *priv)
1652 {
1653         struct rocker_tlv *cmd_info;
1654
1655         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1656                                ROCKER_TLV_CMD_TYPE_GET_PORT_SETTINGS))
1657                 return -EMSGSIZE;
1658         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1659         if (!cmd_info)
1660                 return -EMSGSIZE;
1661         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1662                                rocker_port->pport))
1663                 return -EMSGSIZE;
1664         rocker_tlv_nest_end(desc_info, cmd_info);
1665         return 0;
1666 }
1667
1668 static int
1669 rocker_cmd_get_port_settings_ethtool_proc(const struct rocker_port *rocker_port,
1670                                           const struct rocker_desc_info *desc_info,
1671                                           void *priv)
1672 {
1673         struct ethtool_cmd *ecmd = priv;
1674         const struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
1675         const struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1];
1676         u32 speed;
1677         u8 duplex;
1678         u8 autoneg;
1679
1680         rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
1681         if (!attrs[ROCKER_TLV_CMD_INFO])
1682                 return -EIO;
1683
1684         rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX,
1685                                 attrs[ROCKER_TLV_CMD_INFO]);
1686         if (!info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_SPEED] ||
1687             !info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX] ||
1688             !info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG])
1689                 return -EIO;
1690
1691         speed = rocker_tlv_get_u32(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_SPEED]);
1692         duplex = rocker_tlv_get_u8(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX]);
1693         autoneg = rocker_tlv_get_u8(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG]);
1694
1695         ecmd->transceiver = XCVR_INTERNAL;
1696         ecmd->supported = SUPPORTED_TP;
1697         ecmd->phy_address = 0xff;
1698         ecmd->port = PORT_TP;
1699         ethtool_cmd_speed_set(ecmd, speed);
1700         ecmd->duplex = duplex ? DUPLEX_FULL : DUPLEX_HALF;
1701         ecmd->autoneg = autoneg ? AUTONEG_ENABLE : AUTONEG_DISABLE;
1702
1703         return 0;
1704 }
1705
1706 static int
1707 rocker_cmd_get_port_settings_macaddr_proc(const struct rocker_port *rocker_port,
1708                                           const struct rocker_desc_info *desc_info,
1709                                           void *priv)
1710 {
1711         unsigned char *macaddr = priv;
1712         const struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
1713         const struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1];
1714         const struct rocker_tlv *attr;
1715
1716         rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
1717         if (!attrs[ROCKER_TLV_CMD_INFO])
1718                 return -EIO;
1719
1720         rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX,
1721                                 attrs[ROCKER_TLV_CMD_INFO]);
1722         attr = info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MACADDR];
1723         if (!attr)
1724                 return -EIO;
1725
1726         if (rocker_tlv_len(attr) != ETH_ALEN)
1727                 return -EINVAL;
1728
1729         ether_addr_copy(macaddr, rocker_tlv_data(attr));
1730         return 0;
1731 }
1732
1733 struct port_name {
1734         char *buf;
1735         size_t len;
1736 };
1737
1738 static int
1739 rocker_cmd_get_port_settings_phys_name_proc(const struct rocker_port *rocker_port,
1740                                             const struct rocker_desc_info *desc_info,
1741                                             void *priv)
1742 {
1743         const struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1];
1744         const struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
1745         struct port_name *name = priv;
1746         const struct rocker_tlv *attr;
1747         size_t i, j, len;
1748         const char *str;
1749
1750         rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
1751         if (!attrs[ROCKER_TLV_CMD_INFO])
1752                 return -EIO;
1753
1754         rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX,
1755                                 attrs[ROCKER_TLV_CMD_INFO]);
1756         attr = info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_PHYS_NAME];
1757         if (!attr)
1758                 return -EIO;
1759
1760         len = min_t(size_t, rocker_tlv_len(attr), name->len);
1761         str = rocker_tlv_data(attr);
1762
1763         /* make sure name only contains alphanumeric characters */
1764         for (i = j = 0; i < len; ++i) {
1765                 if (isalnum(str[i])) {
1766                         name->buf[j] = str[i];
1767                         j++;
1768                 }
1769         }
1770
1771         if (j == 0)
1772                 return -EIO;
1773
1774         name->buf[j] = '\0';
1775
1776         return 0;
1777 }
1778
1779 static int
1780 rocker_cmd_set_port_settings_ethtool_prep(const struct rocker_port *rocker_port,
1781                                           struct rocker_desc_info *desc_info,
1782                                           void *priv)
1783 {
1784         struct ethtool_cmd *ecmd = priv;
1785         struct rocker_tlv *cmd_info;
1786
1787         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1788                                ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS))
1789                 return -EMSGSIZE;
1790         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1791         if (!cmd_info)
1792                 return -EMSGSIZE;
1793         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1794                                rocker_port->pport))
1795                 return -EMSGSIZE;
1796         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_SPEED,
1797                                ethtool_cmd_speed(ecmd)))
1798                 return -EMSGSIZE;
1799         if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX,
1800                               ecmd->duplex))
1801                 return -EMSGSIZE;
1802         if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG,
1803                               ecmd->autoneg))
1804                 return -EMSGSIZE;
1805         rocker_tlv_nest_end(desc_info, cmd_info);
1806         return 0;
1807 }
1808
1809 static int
1810 rocker_cmd_set_port_settings_macaddr_prep(const struct rocker_port *rocker_port,
1811                                           struct rocker_desc_info *desc_info,
1812                                           void *priv)
1813 {
1814         const unsigned char *macaddr = priv;
1815         struct rocker_tlv *cmd_info;
1816
1817         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1818                                ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS))
1819                 return -EMSGSIZE;
1820         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1821         if (!cmd_info)
1822                 return -EMSGSIZE;
1823         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1824                                rocker_port->pport))
1825                 return -EMSGSIZE;
1826         if (rocker_tlv_put(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_MACADDR,
1827                            ETH_ALEN, macaddr))
1828                 return -EMSGSIZE;
1829         rocker_tlv_nest_end(desc_info, cmd_info);
1830         return 0;
1831 }
1832
1833 static int
1834 rocker_cmd_set_port_settings_mtu_prep(const struct rocker_port *rocker_port,
1835                                       struct rocker_desc_info *desc_info,
1836                                       void *priv)
1837 {
1838         int mtu = *(int *)priv;
1839         struct rocker_tlv *cmd_info;
1840
1841         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1842                                ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS))
1843                 return -EMSGSIZE;
1844         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1845         if (!cmd_info)
1846                 return -EMSGSIZE;
1847         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1848                                rocker_port->pport))
1849                 return -EMSGSIZE;
1850         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_MTU,
1851                                mtu))
1852                 return -EMSGSIZE;
1853         rocker_tlv_nest_end(desc_info, cmd_info);
1854         return 0;
1855 }
1856
1857 static int
1858 rocker_cmd_set_port_learning_prep(const struct rocker_port *rocker_port,
1859                                   struct rocker_desc_info *desc_info,
1860                                   void *priv)
1861 {
1862         struct rocker_tlv *cmd_info;
1863
1864         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1865                                ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS))
1866                 return -EMSGSIZE;
1867         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1868         if (!cmd_info)
1869                 return -EMSGSIZE;
1870         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1871                                rocker_port->pport))
1872                 return -EMSGSIZE;
1873         if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_LEARNING,
1874                               !!(rocker_port->brport_flags & BR_LEARNING)))
1875                 return -EMSGSIZE;
1876         rocker_tlv_nest_end(desc_info, cmd_info);
1877         return 0;
1878 }
1879
1880 static int rocker_cmd_get_port_settings_ethtool(struct rocker_port *rocker_port,
1881                                                 struct ethtool_cmd *ecmd)
1882 {
1883         return rocker_cmd_exec(rocker_port, SWITCHDEV_TRANS_NONE, 0,
1884                                rocker_cmd_get_port_settings_prep, NULL,
1885                                rocker_cmd_get_port_settings_ethtool_proc,
1886                                ecmd);
1887 }
1888
1889 static int rocker_cmd_get_port_settings_macaddr(struct rocker_port *rocker_port,
1890                                                 unsigned char *macaddr)
1891 {
1892         return rocker_cmd_exec(rocker_port, SWITCHDEV_TRANS_NONE, 0,
1893                                rocker_cmd_get_port_settings_prep, NULL,
1894                                rocker_cmd_get_port_settings_macaddr_proc,
1895                                macaddr);
1896 }
1897
1898 static int rocker_cmd_set_port_settings_ethtool(struct rocker_port *rocker_port,
1899                                                 struct ethtool_cmd *ecmd)
1900 {
1901         return rocker_cmd_exec(rocker_port, SWITCHDEV_TRANS_NONE, 0,
1902                                rocker_cmd_set_port_settings_ethtool_prep,
1903                                ecmd, NULL, NULL);
1904 }
1905
1906 static int rocker_cmd_set_port_settings_macaddr(struct rocker_port *rocker_port,
1907                                                 unsigned char *macaddr)
1908 {
1909         return rocker_cmd_exec(rocker_port, SWITCHDEV_TRANS_NONE, 0,
1910                                rocker_cmd_set_port_settings_macaddr_prep,
1911                                macaddr, NULL, NULL);
1912 }
1913
1914 static int rocker_cmd_set_port_settings_mtu(struct rocker_port *rocker_port,
1915                                             int mtu)
1916 {
1917         return rocker_cmd_exec(rocker_port, SWITCHDEV_TRANS_NONE, 0,
1918                                rocker_cmd_set_port_settings_mtu_prep,
1919                                &mtu, NULL, NULL);
1920 }
1921
1922 static int rocker_port_set_learning(struct rocker_port *rocker_port,
1923                                     enum switchdev_trans trans)
1924 {
1925         return rocker_cmd_exec(rocker_port, trans, 0,
1926                                rocker_cmd_set_port_learning_prep,
1927                                NULL, NULL, NULL);
1928 }
1929
1930 static int
1931 rocker_cmd_flow_tbl_add_ig_port(struct rocker_desc_info *desc_info,
1932                                 const struct rocker_flow_tbl_entry *entry)
1933 {
1934         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
1935                                entry->key.ig_port.in_pport))
1936                 return -EMSGSIZE;
1937         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT_MASK,
1938                                entry->key.ig_port.in_pport_mask))
1939                 return -EMSGSIZE;
1940         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1941                                entry->key.ig_port.goto_tbl))
1942                 return -EMSGSIZE;
1943
1944         return 0;
1945 }
1946
1947 static int
1948 rocker_cmd_flow_tbl_add_vlan(struct rocker_desc_info *desc_info,
1949                              const struct rocker_flow_tbl_entry *entry)
1950 {
1951         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
1952                                entry->key.vlan.in_pport))
1953                 return -EMSGSIZE;
1954         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
1955                                 entry->key.vlan.vlan_id))
1956                 return -EMSGSIZE;
1957         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK,
1958                                 entry->key.vlan.vlan_id_mask))
1959                 return -EMSGSIZE;
1960         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1961                                entry->key.vlan.goto_tbl))
1962                 return -EMSGSIZE;
1963         if (entry->key.vlan.untagged &&
1964             rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_NEW_VLAN_ID,
1965                                 entry->key.vlan.new_vlan_id))
1966                 return -EMSGSIZE;
1967
1968         return 0;
1969 }
1970
1971 static int
1972 rocker_cmd_flow_tbl_add_term_mac(struct rocker_desc_info *desc_info,
1973                                  const struct rocker_flow_tbl_entry *entry)
1974 {
1975         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
1976                                entry->key.term_mac.in_pport))
1977                 return -EMSGSIZE;
1978         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT_MASK,
1979                                entry->key.term_mac.in_pport_mask))
1980                 return -EMSGSIZE;
1981         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE,
1982                                 entry->key.term_mac.eth_type))
1983                 return -EMSGSIZE;
1984         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
1985                            ETH_ALEN, entry->key.term_mac.eth_dst))
1986                 return -EMSGSIZE;
1987         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK,
1988                            ETH_ALEN, entry->key.term_mac.eth_dst_mask))
1989                 return -EMSGSIZE;
1990         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
1991                                 entry->key.term_mac.vlan_id))
1992                 return -EMSGSIZE;
1993         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK,
1994                                 entry->key.term_mac.vlan_id_mask))
1995                 return -EMSGSIZE;
1996         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1997                                entry->key.term_mac.goto_tbl))
1998                 return -EMSGSIZE;
1999         if (entry->key.term_mac.copy_to_cpu &&
2000             rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_COPY_CPU_ACTION,
2001                               entry->key.term_mac.copy_to_cpu))
2002                 return -EMSGSIZE;
2003
2004         return 0;
2005 }
2006
2007 static int
2008 rocker_cmd_flow_tbl_add_ucast_routing(struct rocker_desc_info *desc_info,
2009                                       const struct rocker_flow_tbl_entry *entry)
2010 {
2011         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE,
2012                                 entry->key.ucast_routing.eth_type))
2013                 return -EMSGSIZE;
2014         if (rocker_tlv_put_be32(desc_info, ROCKER_TLV_OF_DPA_DST_IP,
2015                                 entry->key.ucast_routing.dst4))
2016                 return -EMSGSIZE;
2017         if (rocker_tlv_put_be32(desc_info, ROCKER_TLV_OF_DPA_DST_IP_MASK,
2018                                 entry->key.ucast_routing.dst4_mask))
2019                 return -EMSGSIZE;
2020         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
2021                                entry->key.ucast_routing.goto_tbl))
2022                 return -EMSGSIZE;
2023         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
2024                                entry->key.ucast_routing.group_id))
2025                 return -EMSGSIZE;
2026
2027         return 0;
2028 }
2029
2030 static int
2031 rocker_cmd_flow_tbl_add_bridge(struct rocker_desc_info *desc_info,
2032                                const struct rocker_flow_tbl_entry *entry)
2033 {
2034         if (entry->key.bridge.has_eth_dst &&
2035             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
2036                            ETH_ALEN, entry->key.bridge.eth_dst))
2037                 return -EMSGSIZE;
2038         if (entry->key.bridge.has_eth_dst_mask &&
2039             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK,
2040                            ETH_ALEN, entry->key.bridge.eth_dst_mask))
2041                 return -EMSGSIZE;
2042         if (entry->key.bridge.vlan_id &&
2043             rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
2044                                 entry->key.bridge.vlan_id))
2045                 return -EMSGSIZE;
2046         if (entry->key.bridge.tunnel_id &&
2047             rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_TUNNEL_ID,
2048                                entry->key.bridge.tunnel_id))
2049                 return -EMSGSIZE;
2050         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
2051                                entry->key.bridge.goto_tbl))
2052                 return -EMSGSIZE;
2053         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
2054                                entry->key.bridge.group_id))
2055                 return -EMSGSIZE;
2056         if (entry->key.bridge.copy_to_cpu &&
2057             rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_COPY_CPU_ACTION,
2058                               entry->key.bridge.copy_to_cpu))
2059                 return -EMSGSIZE;
2060
2061         return 0;
2062 }
2063
2064 static int
2065 rocker_cmd_flow_tbl_add_acl(struct rocker_desc_info *desc_info,
2066                             const struct rocker_flow_tbl_entry *entry)
2067 {
2068         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
2069                                entry->key.acl.in_pport))
2070                 return -EMSGSIZE;
2071         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT_MASK,
2072                                entry->key.acl.in_pport_mask))
2073                 return -EMSGSIZE;
2074         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC,
2075                            ETH_ALEN, entry->key.acl.eth_src))
2076                 return -EMSGSIZE;
2077         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC_MASK,
2078                            ETH_ALEN, entry->key.acl.eth_src_mask))
2079                 return -EMSGSIZE;
2080         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
2081                            ETH_ALEN, entry->key.acl.eth_dst))
2082                 return -EMSGSIZE;
2083         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK,
2084                            ETH_ALEN, entry->key.acl.eth_dst_mask))
2085                 return -EMSGSIZE;
2086         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE,
2087                                 entry->key.acl.eth_type))
2088                 return -EMSGSIZE;
2089         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
2090                                 entry->key.acl.vlan_id))
2091                 return -EMSGSIZE;
2092         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK,
2093                                 entry->key.acl.vlan_id_mask))
2094                 return -EMSGSIZE;
2095
2096         switch (ntohs(entry->key.acl.eth_type)) {
2097         case ETH_P_IP:
2098         case ETH_P_IPV6:
2099                 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_PROTO,
2100                                       entry->key.acl.ip_proto))
2101                         return -EMSGSIZE;
2102                 if (rocker_tlv_put_u8(desc_info,
2103                                       ROCKER_TLV_OF_DPA_IP_PROTO_MASK,
2104                                       entry->key.acl.ip_proto_mask))
2105                         return -EMSGSIZE;
2106                 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_DSCP,
2107                                       entry->key.acl.ip_tos & 0x3f))
2108                         return -EMSGSIZE;
2109                 if (rocker_tlv_put_u8(desc_info,
2110                                       ROCKER_TLV_OF_DPA_IP_DSCP_MASK,
2111                                       entry->key.acl.ip_tos_mask & 0x3f))
2112                         return -EMSGSIZE;
2113                 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_ECN,
2114                                       (entry->key.acl.ip_tos & 0xc0) >> 6))
2115                         return -EMSGSIZE;
2116                 if (rocker_tlv_put_u8(desc_info,
2117                                       ROCKER_TLV_OF_DPA_IP_ECN_MASK,
2118                                       (entry->key.acl.ip_tos_mask & 0xc0) >> 6))
2119                         return -EMSGSIZE;
2120                 break;
2121         }
2122
2123         if (entry->key.acl.group_id != ROCKER_GROUP_NONE &&
2124             rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
2125                                entry->key.acl.group_id))
2126                 return -EMSGSIZE;
2127
2128         return 0;
2129 }
2130
2131 static int rocker_cmd_flow_tbl_add(const struct rocker_port *rocker_port,
2132                                    struct rocker_desc_info *desc_info,
2133                                    void *priv)
2134 {
2135         const struct rocker_flow_tbl_entry *entry = priv;
2136         struct rocker_tlv *cmd_info;
2137         int err = 0;
2138
2139         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
2140                 return -EMSGSIZE;
2141         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
2142         if (!cmd_info)
2143                 return -EMSGSIZE;
2144         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_TABLE_ID,
2145                                entry->key.tbl_id))
2146                 return -EMSGSIZE;
2147         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_PRIORITY,
2148                                entry->key.priority))
2149                 return -EMSGSIZE;
2150         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_HARDTIME, 0))
2151                 return -EMSGSIZE;
2152         if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_OF_DPA_COOKIE,
2153                                entry->cookie))
2154                 return -EMSGSIZE;
2155
2156         switch (entry->key.tbl_id) {
2157         case ROCKER_OF_DPA_TABLE_ID_INGRESS_PORT:
2158                 err = rocker_cmd_flow_tbl_add_ig_port(desc_info, entry);
2159                 break;
2160         case ROCKER_OF_DPA_TABLE_ID_VLAN:
2161                 err = rocker_cmd_flow_tbl_add_vlan(desc_info, entry);
2162                 break;
2163         case ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC:
2164                 err = rocker_cmd_flow_tbl_add_term_mac(desc_info, entry);
2165                 break;
2166         case ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING:
2167                 err = rocker_cmd_flow_tbl_add_ucast_routing(desc_info, entry);
2168                 break;
2169         case ROCKER_OF_DPA_TABLE_ID_BRIDGING:
2170                 err = rocker_cmd_flow_tbl_add_bridge(desc_info, entry);
2171                 break;
2172         case ROCKER_OF_DPA_TABLE_ID_ACL_POLICY:
2173                 err = rocker_cmd_flow_tbl_add_acl(desc_info, entry);
2174                 break;
2175         default:
2176                 err = -ENOTSUPP;
2177                 break;
2178         }
2179
2180         if (err)
2181                 return err;
2182
2183         rocker_tlv_nest_end(desc_info, cmd_info);
2184
2185         return 0;
2186 }
2187
2188 static int rocker_cmd_flow_tbl_del(const struct rocker_port *rocker_port,
2189                                    struct rocker_desc_info *desc_info,
2190                                    void *priv)
2191 {
2192         const struct rocker_flow_tbl_entry *entry = priv;
2193         struct rocker_tlv *cmd_info;
2194
2195         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
2196                 return -EMSGSIZE;
2197         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
2198         if (!cmd_info)
2199                 return -EMSGSIZE;
2200         if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_OF_DPA_COOKIE,
2201                                entry->cookie))
2202                 return -EMSGSIZE;
2203         rocker_tlv_nest_end(desc_info, cmd_info);
2204
2205         return 0;
2206 }
2207
2208 static int
2209 rocker_cmd_group_tbl_add_l2_interface(struct rocker_desc_info *desc_info,
2210                                       struct rocker_group_tbl_entry *entry)
2211 {
2212         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_OUT_PPORT,
2213                                ROCKER_GROUP_PORT_GET(entry->group_id)))
2214                 return -EMSGSIZE;
2215         if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_POP_VLAN,
2216                               entry->l2_interface.pop_vlan))
2217                 return -EMSGSIZE;
2218
2219         return 0;
2220 }
2221
2222 static int
2223 rocker_cmd_group_tbl_add_l2_rewrite(struct rocker_desc_info *desc_info,
2224                                     const struct rocker_group_tbl_entry *entry)
2225 {
2226         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID_LOWER,
2227                                entry->l2_rewrite.group_id))
2228                 return -EMSGSIZE;
2229         if (!is_zero_ether_addr(entry->l2_rewrite.eth_src) &&
2230             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC,
2231                            ETH_ALEN, entry->l2_rewrite.eth_src))
2232                 return -EMSGSIZE;
2233         if (!is_zero_ether_addr(entry->l2_rewrite.eth_dst) &&
2234             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
2235                            ETH_ALEN, entry->l2_rewrite.eth_dst))
2236                 return -EMSGSIZE;
2237         if (entry->l2_rewrite.vlan_id &&
2238             rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
2239                                 entry->l2_rewrite.vlan_id))
2240                 return -EMSGSIZE;
2241
2242         return 0;
2243 }
2244
2245 static int
2246 rocker_cmd_group_tbl_add_group_ids(struct rocker_desc_info *desc_info,
2247                                    const struct rocker_group_tbl_entry *entry)
2248 {
2249         int i;
2250         struct rocker_tlv *group_ids;
2251
2252         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GROUP_COUNT,
2253                                entry->group_count))
2254                 return -EMSGSIZE;
2255
2256         group_ids = rocker_tlv_nest_start(desc_info,
2257                                           ROCKER_TLV_OF_DPA_GROUP_IDS);
2258         if (!group_ids)
2259                 return -EMSGSIZE;
2260
2261         for (i = 0; i < entry->group_count; i++)
2262                 /* Note TLV array is 1-based */
2263                 if (rocker_tlv_put_u32(desc_info, i + 1, entry->group_ids[i]))
2264                         return -EMSGSIZE;
2265
2266         rocker_tlv_nest_end(desc_info, group_ids);
2267
2268         return 0;
2269 }
2270
2271 static int
2272 rocker_cmd_group_tbl_add_l3_unicast(struct rocker_desc_info *desc_info,
2273                                     const struct rocker_group_tbl_entry *entry)
2274 {
2275         if (!is_zero_ether_addr(entry->l3_unicast.eth_src) &&
2276             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC,
2277                            ETH_ALEN, entry->l3_unicast.eth_src))
2278                 return -EMSGSIZE;
2279         if (!is_zero_ether_addr(entry->l3_unicast.eth_dst) &&
2280             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
2281                            ETH_ALEN, entry->l3_unicast.eth_dst))
2282                 return -EMSGSIZE;
2283         if (entry->l3_unicast.vlan_id &&
2284             rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
2285                                 entry->l3_unicast.vlan_id))
2286                 return -EMSGSIZE;
2287         if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_TTL_CHECK,
2288                               entry->l3_unicast.ttl_check))
2289                 return -EMSGSIZE;
2290         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID_LOWER,
2291                                entry->l3_unicast.group_id))
2292                 return -EMSGSIZE;
2293
2294         return 0;
2295 }
2296
2297 static int rocker_cmd_group_tbl_add(const struct rocker_port *rocker_port,
2298                                     struct rocker_desc_info *desc_info,
2299                                     void *priv)
2300 {
2301         struct rocker_group_tbl_entry *entry = priv;
2302         struct rocker_tlv *cmd_info;
2303         int err = 0;
2304
2305         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
2306                 return -EMSGSIZE;
2307         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
2308         if (!cmd_info)
2309                 return -EMSGSIZE;
2310
2311         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
2312                                entry->group_id))
2313                 return -EMSGSIZE;
2314
2315         switch (ROCKER_GROUP_TYPE_GET(entry->group_id)) {
2316         case ROCKER_OF_DPA_GROUP_TYPE_L2_INTERFACE:
2317                 err = rocker_cmd_group_tbl_add_l2_interface(desc_info, entry);
2318                 break;
2319         case ROCKER_OF_DPA_GROUP_TYPE_L2_REWRITE:
2320                 err = rocker_cmd_group_tbl_add_l2_rewrite(desc_info, entry);
2321                 break;
2322         case ROCKER_OF_DPA_GROUP_TYPE_L2_FLOOD:
2323         case ROCKER_OF_DPA_GROUP_TYPE_L2_MCAST:
2324                 err = rocker_cmd_group_tbl_add_group_ids(desc_info, entry);
2325                 break;
2326         case ROCKER_OF_DPA_GROUP_TYPE_L3_UCAST:
2327                 err = rocker_cmd_group_tbl_add_l3_unicast(desc_info, entry);
2328                 break;
2329         default:
2330                 err = -ENOTSUPP;
2331                 break;
2332         }
2333
2334         if (err)
2335                 return err;
2336
2337         rocker_tlv_nest_end(desc_info, cmd_info);
2338
2339         return 0;
2340 }
2341
2342 static int rocker_cmd_group_tbl_del(const struct rocker_port *rocker_port,
2343                                     struct rocker_desc_info *desc_info,
2344                                     void *priv)
2345 {
2346         const struct rocker_group_tbl_entry *entry = priv;
2347         struct rocker_tlv *cmd_info;
2348
2349         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
2350                 return -EMSGSIZE;
2351         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
2352         if (!cmd_info)
2353                 return -EMSGSIZE;
2354         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
2355                                entry->group_id))
2356                 return -EMSGSIZE;
2357         rocker_tlv_nest_end(desc_info, cmd_info);
2358
2359         return 0;
2360 }
2361
2362 /***************************************************
2363  * Flow, group, FDB, internal VLAN and neigh tables
2364  ***************************************************/
2365
2366 static int rocker_init_tbls(struct rocker *rocker)
2367 {
2368         hash_init(rocker->flow_tbl);
2369         spin_lock_init(&rocker->flow_tbl_lock);
2370
2371         hash_init(rocker->group_tbl);
2372         spin_lock_init(&rocker->group_tbl_lock);
2373
2374         hash_init(rocker->fdb_tbl);
2375         spin_lock_init(&rocker->fdb_tbl_lock);
2376
2377         hash_init(rocker->internal_vlan_tbl);
2378         spin_lock_init(&rocker->internal_vlan_tbl_lock);
2379
2380         hash_init(rocker->neigh_tbl);
2381         spin_lock_init(&rocker->neigh_tbl_lock);
2382
2383         return 0;
2384 }
2385
2386 static void rocker_free_tbls(struct rocker *rocker)
2387 {
2388         unsigned long flags;
2389         struct rocker_flow_tbl_entry *flow_entry;
2390         struct rocker_group_tbl_entry *group_entry;
2391         struct rocker_fdb_tbl_entry *fdb_entry;
2392         struct rocker_internal_vlan_tbl_entry *internal_vlan_entry;
2393         struct rocker_neigh_tbl_entry *neigh_entry;
2394         struct hlist_node *tmp;
2395         int bkt;
2396
2397         spin_lock_irqsave(&rocker->flow_tbl_lock, flags);
2398         hash_for_each_safe(rocker->flow_tbl, bkt, tmp, flow_entry, entry)
2399                 hash_del(&flow_entry->entry);
2400         spin_unlock_irqrestore(&rocker->flow_tbl_lock, flags);
2401
2402         spin_lock_irqsave(&rocker->group_tbl_lock, flags);
2403         hash_for_each_safe(rocker->group_tbl, bkt, tmp, group_entry, entry)
2404                 hash_del(&group_entry->entry);
2405         spin_unlock_irqrestore(&rocker->group_tbl_lock, flags);
2406
2407         spin_lock_irqsave(&rocker->fdb_tbl_lock, flags);
2408         hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, fdb_entry, entry)
2409                 hash_del(&fdb_entry->entry);
2410         spin_unlock_irqrestore(&rocker->fdb_tbl_lock, flags);
2411
2412         spin_lock_irqsave(&rocker->internal_vlan_tbl_lock, flags);
2413         hash_for_each_safe(rocker->internal_vlan_tbl, bkt,
2414                            tmp, internal_vlan_entry, entry)
2415                 hash_del(&internal_vlan_entry->entry);
2416         spin_unlock_irqrestore(&rocker->internal_vlan_tbl_lock, flags);
2417
2418         spin_lock_irqsave(&rocker->neigh_tbl_lock, flags);
2419         hash_for_each_safe(rocker->neigh_tbl, bkt, tmp, neigh_entry, entry)
2420                 hash_del(&neigh_entry->entry);
2421         spin_unlock_irqrestore(&rocker->neigh_tbl_lock, flags);
2422 }
2423
2424 static struct rocker_flow_tbl_entry *
2425 rocker_flow_tbl_find(const struct rocker *rocker,
2426                      const struct rocker_flow_tbl_entry *match)
2427 {
2428         struct rocker_flow_tbl_entry *found;
2429         size_t key_len = match->key_len ? match->key_len : sizeof(found->key);
2430
2431         hash_for_each_possible(rocker->flow_tbl, found,
2432                                entry, match->key_crc32) {
2433                 if (memcmp(&found->key, &match->key, key_len) == 0)
2434                         return found;
2435         }
2436
2437         return NULL;
2438 }
2439
2440 static int rocker_flow_tbl_add(struct rocker_port *rocker_port,
2441                                enum switchdev_trans trans, int flags,
2442                                struct rocker_flow_tbl_entry *match)
2443 {
2444         struct rocker *rocker = rocker_port->rocker;
2445         struct rocker_flow_tbl_entry *found;
2446         size_t key_len = match->key_len ? match->key_len : sizeof(found->key);
2447         unsigned long lock_flags;
2448
2449         match->key_crc32 = crc32(~0, &match->key, key_len);
2450
2451         spin_lock_irqsave(&rocker->flow_tbl_lock, lock_flags);
2452
2453         found = rocker_flow_tbl_find(rocker, match);
2454
2455         if (found) {
2456                 match->cookie = found->cookie;
2457                 if (trans != SWITCHDEV_TRANS_PREPARE)
2458                         hash_del(&found->entry);
2459                 rocker_port_kfree(trans, found);
2460                 found = match;
2461                 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_MOD;
2462         } else {
2463                 found = match;
2464                 found->cookie = rocker->flow_tbl_next_cookie++;
2465                 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_ADD;
2466         }
2467
2468         if (trans != SWITCHDEV_TRANS_PREPARE)
2469                 hash_add(rocker->flow_tbl, &found->entry, found->key_crc32);
2470
2471         spin_unlock_irqrestore(&rocker->flow_tbl_lock, lock_flags);
2472
2473         return rocker_cmd_exec(rocker_port, trans, flags,
2474                                rocker_cmd_flow_tbl_add, found, NULL, NULL);
2475 }
2476
2477 static int rocker_flow_tbl_del(struct rocker_port *rocker_port,
2478                                enum switchdev_trans trans, int flags,
2479                                struct rocker_flow_tbl_entry *match)
2480 {
2481         struct rocker *rocker = rocker_port->rocker;
2482         struct rocker_flow_tbl_entry *found;
2483         size_t key_len = match->key_len ? match->key_len : sizeof(found->key);
2484         unsigned long lock_flags;
2485         int err = 0;
2486
2487         match->key_crc32 = crc32(~0, &match->key, key_len);
2488
2489         spin_lock_irqsave(&rocker->flow_tbl_lock, lock_flags);
2490
2491         found = rocker_flow_tbl_find(rocker, match);
2492
2493         if (found) {
2494                 if (trans != SWITCHDEV_TRANS_PREPARE)
2495                         hash_del(&found->entry);
2496                 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_DEL;
2497         }
2498
2499         spin_unlock_irqrestore(&rocker->flow_tbl_lock, lock_flags);
2500
2501         rocker_port_kfree(trans, match);
2502
2503         if (found) {
2504                 err = rocker_cmd_exec(rocker_port, trans, flags,
2505                                       rocker_cmd_flow_tbl_del,
2506                                       found, NULL, NULL);
2507                 rocker_port_kfree(trans, found);
2508         }
2509
2510         return err;
2511 }
2512
2513 static int rocker_flow_tbl_do(struct rocker_port *rocker_port,
2514                               enum switchdev_trans trans, int flags,
2515                               struct rocker_flow_tbl_entry *entry)
2516 {
2517         if (flags & ROCKER_OP_FLAG_REMOVE)
2518                 return rocker_flow_tbl_del(rocker_port, trans, flags, entry);
2519         else
2520                 return rocker_flow_tbl_add(rocker_port, trans, flags, entry);
2521 }
2522
2523 static int rocker_flow_tbl_ig_port(struct rocker_port *rocker_port,
2524                                    enum switchdev_trans trans, int flags,
2525                                    u32 in_pport, u32 in_pport_mask,
2526                                    enum rocker_of_dpa_table_id goto_tbl)
2527 {
2528         struct rocker_flow_tbl_entry *entry;
2529
2530         entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
2531         if (!entry)
2532                 return -ENOMEM;
2533
2534         entry->key.priority = ROCKER_PRIORITY_IG_PORT;
2535         entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_INGRESS_PORT;
2536         entry->key.ig_port.in_pport = in_pport;
2537         entry->key.ig_port.in_pport_mask = in_pport_mask;
2538         entry->key.ig_port.goto_tbl = goto_tbl;
2539
2540         return rocker_flow_tbl_do(rocker_port, trans, flags, entry);
2541 }
2542
2543 static int rocker_flow_tbl_vlan(struct rocker_port *rocker_port,
2544                                 enum switchdev_trans trans, int flags,
2545                                 u32 in_pport, __be16 vlan_id,
2546                                 __be16 vlan_id_mask,
2547                                 enum rocker_of_dpa_table_id goto_tbl,
2548                                 bool untagged, __be16 new_vlan_id)
2549 {
2550         struct rocker_flow_tbl_entry *entry;
2551
2552         entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
2553         if (!entry)
2554                 return -ENOMEM;
2555
2556         entry->key.priority = ROCKER_PRIORITY_VLAN;
2557         entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_VLAN;
2558         entry->key.vlan.in_pport = in_pport;
2559         entry->key.vlan.vlan_id = vlan_id;
2560         entry->key.vlan.vlan_id_mask = vlan_id_mask;
2561         entry->key.vlan.goto_tbl = goto_tbl;
2562
2563         entry->key.vlan.untagged = untagged;
2564         entry->key.vlan.new_vlan_id = new_vlan_id;
2565
2566         return rocker_flow_tbl_do(rocker_port, trans, flags, entry);
2567 }
2568
2569 static int rocker_flow_tbl_term_mac(struct rocker_port *rocker_port,
2570                                     enum switchdev_trans trans,
2571                                     u32 in_pport, u32 in_pport_mask,
2572                                     __be16 eth_type, const u8 *eth_dst,
2573                                     const u8 *eth_dst_mask, __be16 vlan_id,
2574                                     __be16 vlan_id_mask, bool copy_to_cpu,
2575                                     int flags)
2576 {
2577         struct rocker_flow_tbl_entry *entry;
2578
2579         entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
2580         if (!entry)
2581                 return -ENOMEM;
2582
2583         if (is_multicast_ether_addr(eth_dst)) {
2584                 entry->key.priority = ROCKER_PRIORITY_TERM_MAC_MCAST;
2585                 entry->key.term_mac.goto_tbl =
2586                          ROCKER_OF_DPA_TABLE_ID_MULTICAST_ROUTING;
2587         } else {
2588                 entry->key.priority = ROCKER_PRIORITY_TERM_MAC_UCAST;
2589                 entry->key.term_mac.goto_tbl =
2590                          ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING;
2591         }
2592
2593         entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC;
2594         entry->key.term_mac.in_pport = in_pport;
2595         entry->key.term_mac.in_pport_mask = in_pport_mask;
2596         entry->key.term_mac.eth_type = eth_type;
2597         ether_addr_copy(entry->key.term_mac.eth_dst, eth_dst);
2598         ether_addr_copy(entry->key.term_mac.eth_dst_mask, eth_dst_mask);
2599         entry->key.term_mac.vlan_id = vlan_id;
2600         entry->key.term_mac.vlan_id_mask = vlan_id_mask;
2601         entry->key.term_mac.copy_to_cpu = copy_to_cpu;
2602
2603         return rocker_flow_tbl_do(rocker_port, trans, flags, entry);
2604 }
2605
2606 static int rocker_flow_tbl_bridge(struct rocker_port *rocker_port,
2607                                   enum switchdev_trans trans, int flags,
2608                                   const u8 *eth_dst, const u8 *eth_dst_mask,
2609                                   __be16 vlan_id, u32 tunnel_id,
2610                                   enum rocker_of_dpa_table_id goto_tbl,
2611                                   u32 group_id, bool copy_to_cpu)
2612 {
2613         struct rocker_flow_tbl_entry *entry;
2614         u32 priority;
2615         bool vlan_bridging = !!vlan_id;
2616         bool dflt = !eth_dst || (eth_dst && eth_dst_mask);
2617         bool wild = false;
2618
2619         entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
2620         if (!entry)
2621                 return -ENOMEM;
2622
2623         entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_BRIDGING;
2624
2625         if (eth_dst) {
2626                 entry->key.bridge.has_eth_dst = 1;
2627                 ether_addr_copy(entry->key.bridge.eth_dst, eth_dst);
2628         }
2629         if (eth_dst_mask) {
2630                 entry->key.bridge.has_eth_dst_mask = 1;
2631                 ether_addr_copy(entry->key.bridge.eth_dst_mask, eth_dst_mask);
2632                 if (!ether_addr_equal(eth_dst_mask, ff_mac))
2633                         wild = true;
2634         }
2635
2636         priority = ROCKER_PRIORITY_UNKNOWN;
2637         if (vlan_bridging && dflt && wild)
2638                 priority = ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_WILD;
2639         else if (vlan_bridging && dflt && !wild)
2640                 priority = ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_EXACT;
2641         else if (vlan_bridging && !dflt)
2642                 priority = ROCKER_PRIORITY_BRIDGING_VLAN;
2643         else if (!vlan_bridging && dflt && wild)
2644                 priority = ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_WILD;
2645         else if (!vlan_bridging && dflt && !wild)
2646                 priority = ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_EXACT;
2647         else if (!vlan_bridging && !dflt)
2648                 priority = ROCKER_PRIORITY_BRIDGING_TENANT;
2649
2650         entry->key.priority = priority;
2651         entry->key.bridge.vlan_id = vlan_id;
2652         entry->key.bridge.tunnel_id = tunnel_id;
2653         entry->key.bridge.goto_tbl = goto_tbl;
2654         entry->key.bridge.group_id = group_id;
2655         entry->key.bridge.copy_to_cpu = copy_to_cpu;
2656
2657         return rocker_flow_tbl_do(rocker_port, trans, flags, entry);
2658 }
2659
2660 static int rocker_flow_tbl_ucast4_routing(struct rocker_port *rocker_port,
2661                                           enum switchdev_trans trans,
2662                                           __be16 eth_type, __be32 dst,
2663                                           __be32 dst_mask, u32 priority,
2664                                           enum rocker_of_dpa_table_id goto_tbl,
2665                                           u32 group_id, int flags)
2666 {
2667         struct rocker_flow_tbl_entry *entry;
2668
2669         entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
2670         if (!entry)
2671                 return -ENOMEM;
2672
2673         entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING;
2674         entry->key.priority = priority;
2675         entry->key.ucast_routing.eth_type = eth_type;
2676         entry->key.ucast_routing.dst4 = dst;
2677         entry->key.ucast_routing.dst4_mask = dst_mask;
2678         entry->key.ucast_routing.goto_tbl = goto_tbl;
2679         entry->key.ucast_routing.group_id = group_id;
2680         entry->key_len = offsetof(struct rocker_flow_tbl_key,
2681                                   ucast_routing.group_id);
2682
2683         return rocker_flow_tbl_do(rocker_port, trans, flags, entry);
2684 }
2685
2686 static int rocker_flow_tbl_acl(struct rocker_port *rocker_port,
2687                                enum switchdev_trans trans, int flags,
2688                                u32 in_pport, u32 in_pport_mask,
2689                                const u8 *eth_src, const u8 *eth_src_mask,
2690                                const u8 *eth_dst, const u8 *eth_dst_mask,
2691                                __be16 eth_type, __be16 vlan_id,
2692                                __be16 vlan_id_mask, u8 ip_proto,
2693                                u8 ip_proto_mask, u8 ip_tos, u8 ip_tos_mask,
2694                                u32 group_id)
2695 {
2696         u32 priority;
2697         struct rocker_flow_tbl_entry *entry;
2698
2699         entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
2700         if (!entry)
2701                 return -ENOMEM;
2702
2703         priority = ROCKER_PRIORITY_ACL_NORMAL;
2704         if (eth_dst && eth_dst_mask) {
2705                 if (ether_addr_equal(eth_dst_mask, mcast_mac))
2706                         priority = ROCKER_PRIORITY_ACL_DFLT;
2707                 else if (is_link_local_ether_addr(eth_dst))
2708                         priority = ROCKER_PRIORITY_ACL_CTRL;
2709         }
2710
2711         entry->key.priority = priority;
2712         entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
2713         entry->key.acl.in_pport = in_pport;
2714         entry->key.acl.in_pport_mask = in_pport_mask;
2715
2716         if (eth_src)
2717                 ether_addr_copy(entry->key.acl.eth_src, eth_src);
2718         if (eth_src_mask)
2719                 ether_addr_copy(entry->key.acl.eth_src_mask, eth_src_mask);
2720         if (eth_dst)
2721                 ether_addr_copy(entry->key.acl.eth_dst, eth_dst);
2722         if (eth_dst_mask)
2723                 ether_addr_copy(entry->key.acl.eth_dst_mask, eth_dst_mask);
2724
2725         entry->key.acl.eth_type = eth_type;
2726         entry->key.acl.vlan_id = vlan_id;
2727         entry->key.acl.vlan_id_mask = vlan_id_mask;
2728         entry->key.acl.ip_proto = ip_proto;
2729         entry->key.acl.ip_proto_mask = ip_proto_mask;
2730         entry->key.acl.ip_tos = ip_tos;
2731         entry->key.acl.ip_tos_mask = ip_tos_mask;
2732         entry->key.acl.group_id = group_id;
2733
2734         return rocker_flow_tbl_do(rocker_port, trans, flags, entry);
2735 }
2736
2737 static struct rocker_group_tbl_entry *
2738 rocker_group_tbl_find(const struct rocker *rocker,
2739                       const struct rocker_group_tbl_entry *match)
2740 {
2741         struct rocker_group_tbl_entry *found;
2742
2743         hash_for_each_possible(rocker->group_tbl, found,
2744                                entry, match->group_id) {
2745                 if (found->group_id == match->group_id)
2746                         return found;
2747         }
2748
2749         return NULL;
2750 }
2751
2752 static void rocker_group_tbl_entry_free(enum switchdev_trans trans,
2753                                         struct rocker_group_tbl_entry *entry)
2754 {
2755         switch (ROCKER_GROUP_TYPE_GET(entry->group_id)) {
2756         case ROCKER_OF_DPA_GROUP_TYPE_L2_FLOOD:
2757         case ROCKER_OF_DPA_GROUP_TYPE_L2_MCAST:
2758                 rocker_port_kfree(trans, entry->group_ids);
2759                 break;
2760         default:
2761                 break;
2762         }
2763         rocker_port_kfree(trans, entry);
2764 }
2765
2766 static int rocker_group_tbl_add(struct rocker_port *rocker_port,
2767                                 enum switchdev_trans trans, int flags,
2768                                 struct rocker_group_tbl_entry *match)
2769 {
2770         struct rocker *rocker = rocker_port->rocker;
2771         struct rocker_group_tbl_entry *found;
2772         unsigned long lock_flags;
2773
2774         spin_lock_irqsave(&rocker->group_tbl_lock, lock_flags);
2775
2776         found = rocker_group_tbl_find(rocker, match);
2777
2778         if (found) {
2779                 if (trans != SWITCHDEV_TRANS_PREPARE)
2780                         hash_del(&found->entry);
2781                 rocker_group_tbl_entry_free(trans, found);
2782                 found = match;
2783                 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_MOD;
2784         } else {
2785                 found = match;
2786                 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_ADD;
2787         }
2788
2789         if (trans != SWITCHDEV_TRANS_PREPARE)
2790                 hash_add(rocker->group_tbl, &found->entry, found->group_id);
2791
2792         spin_unlock_irqrestore(&rocker->group_tbl_lock, lock_flags);
2793
2794         return rocker_cmd_exec(rocker_port, trans, flags,
2795                                rocker_cmd_group_tbl_add, found, NULL, NULL);
2796 }
2797
2798 static int rocker_group_tbl_del(struct rocker_port *rocker_port,
2799                                 enum switchdev_trans trans, int flags,
2800                                 struct rocker_group_tbl_entry *match)
2801 {
2802         struct rocker *rocker = rocker_port->rocker;
2803         struct rocker_group_tbl_entry *found;
2804         unsigned long lock_flags;
2805         int err = 0;
2806
2807         spin_lock_irqsave(&rocker->group_tbl_lock, lock_flags);
2808
2809         found = rocker_group_tbl_find(rocker, match);
2810
2811         if (found) {
2812                 if (trans != SWITCHDEV_TRANS_PREPARE)
2813                         hash_del(&found->entry);
2814                 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_DEL;
2815         }
2816
2817         spin_unlock_irqrestore(&rocker->group_tbl_lock, lock_flags);
2818
2819         rocker_group_tbl_entry_free(trans, match);
2820
2821         if (found) {
2822                 err = rocker_cmd_exec(rocker_port, trans, flags,
2823                                       rocker_cmd_group_tbl_del,
2824                                       found, NULL, NULL);
2825                 rocker_group_tbl_entry_free(trans, found);
2826         }
2827
2828         return err;
2829 }
2830
2831 static int rocker_group_tbl_do(struct rocker_port *rocker_port,
2832                                enum switchdev_trans trans, int flags,
2833                                struct rocker_group_tbl_entry *entry)
2834 {
2835         if (flags & ROCKER_OP_FLAG_REMOVE)
2836                 return rocker_group_tbl_del(rocker_port, trans, flags, entry);
2837         else
2838                 return rocker_group_tbl_add(rocker_port, trans, flags, entry);
2839 }
2840
2841 static int rocker_group_l2_interface(struct rocker_port *rocker_port,
2842                                      enum switchdev_trans trans, int flags,
2843                                      __be16 vlan_id, u32 out_pport,
2844                                      int pop_vlan)
2845 {
2846         struct rocker_group_tbl_entry *entry;
2847
2848         entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
2849         if (!entry)
2850                 return -ENOMEM;
2851
2852         entry->group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_pport);
2853         entry->l2_interface.pop_vlan = pop_vlan;
2854
2855         return rocker_group_tbl_do(rocker_port, trans, flags, entry);
2856 }
2857
2858 static int rocker_group_l2_fan_out(struct rocker_port *rocker_port,
2859                                    enum switchdev_trans trans,
2860                                    int flags, u8 group_count,
2861                                    const u32 *group_ids, u32 group_id)
2862 {
2863         struct rocker_group_tbl_entry *entry;
2864
2865         entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
2866         if (!entry)
2867                 return -ENOMEM;
2868
2869         entry->group_id = group_id;
2870         entry->group_count = group_count;
2871
2872         entry->group_ids = rocker_port_kcalloc(rocker_port, trans, flags,
2873                                                group_count, sizeof(u32));
2874         if (!entry->group_ids) {
2875                 rocker_port_kfree(trans, entry);
2876                 return -ENOMEM;
2877         }
2878         memcpy(entry->group_ids, group_ids, group_count * sizeof(u32));
2879
2880         return rocker_group_tbl_do(rocker_port, trans, flags, entry);
2881 }
2882
2883 static int rocker_group_l2_flood(struct rocker_port *rocker_port,
2884                                  enum switchdev_trans trans, int flags,
2885                                  __be16 vlan_id, u8 group_count,
2886                                  const u32 *group_ids, u32 group_id)
2887 {
2888         return rocker_group_l2_fan_out(rocker_port, trans, flags,
2889                                        group_count, group_ids,
2890                                        group_id);
2891 }
2892
2893 static int rocker_group_l3_unicast(struct rocker_port *rocker_port,
2894                                    enum switchdev_trans trans, int flags,
2895                                    u32 index, const u8 *src_mac, const u8 *dst_mac,
2896                                    __be16 vlan_id, bool ttl_check, u32 pport)
2897 {
2898         struct rocker_group_tbl_entry *entry;
2899
2900         entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
2901         if (!entry)
2902                 return -ENOMEM;
2903
2904         entry->group_id = ROCKER_GROUP_L3_UNICAST(index);
2905         if (src_mac)
2906                 ether_addr_copy(entry->l3_unicast.eth_src, src_mac);
2907         if (dst_mac)
2908                 ether_addr_copy(entry->l3_unicast.eth_dst, dst_mac);
2909         entry->l3_unicast.vlan_id = vlan_id;
2910         entry->l3_unicast.ttl_check = ttl_check;
2911         entry->l3_unicast.group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, pport);
2912
2913         return rocker_group_tbl_do(rocker_port, trans, flags, entry);
2914 }
2915
2916 static struct rocker_neigh_tbl_entry *
2917 rocker_neigh_tbl_find(const struct rocker *rocker, __be32 ip_addr)
2918 {
2919         struct rocker_neigh_tbl_entry *found;
2920
2921         hash_for_each_possible(rocker->neigh_tbl, found,
2922                                entry, be32_to_cpu(ip_addr))
2923                 if (found->ip_addr == ip_addr)
2924                         return found;
2925
2926         return NULL;
2927 }
2928
2929 static void _rocker_neigh_add(struct rocker *rocker,
2930                               enum switchdev_trans trans,
2931                               struct rocker_neigh_tbl_entry *entry)
2932 {
2933         if (trans != SWITCHDEV_TRANS_COMMIT)
2934                 entry->index = rocker->neigh_tbl_next_index++;
2935         if (trans == SWITCHDEV_TRANS_PREPARE)
2936                 return;
2937         entry->ref_count++;
2938         hash_add(rocker->neigh_tbl, &entry->entry,
2939                  be32_to_cpu(entry->ip_addr));
2940 }
2941
2942 static void _rocker_neigh_del(enum switchdev_trans trans,
2943                               struct rocker_neigh_tbl_entry *entry)
2944 {
2945         if (trans == SWITCHDEV_TRANS_PREPARE)
2946                 return;
2947         if (--entry->ref_count == 0) {
2948                 hash_del(&entry->entry);
2949                 rocker_port_kfree(trans, entry);
2950         }
2951 }
2952
2953 static void _rocker_neigh_update(struct rocker_neigh_tbl_entry *entry,
2954                                  enum switchdev_trans trans,
2955                                  const u8 *eth_dst, bool ttl_check)
2956 {
2957         if (eth_dst) {
2958                 ether_addr_copy(entry->eth_dst, eth_dst);
2959                 entry->ttl_check = ttl_check;
2960         } else if (trans != SWITCHDEV_TRANS_PREPARE) {
2961                 entry->ref_count++;
2962         }
2963 }
2964
2965 static int rocker_port_ipv4_neigh(struct rocker_port *rocker_port,
2966                                   enum switchdev_trans trans,
2967                                   int flags, __be32 ip_addr, const u8 *eth_dst)
2968 {
2969         struct rocker *rocker = rocker_port->rocker;
2970         struct rocker_neigh_tbl_entry *entry;
2971         struct rocker_neigh_tbl_entry *found;
2972         unsigned long lock_flags;
2973         __be16 eth_type = htons(ETH_P_IP);
2974         enum rocker_of_dpa_table_id goto_tbl =
2975                 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
2976         u32 group_id;
2977         u32 priority = 0;
2978         bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
2979         bool updating;
2980         bool removing;
2981         int err = 0;
2982
2983         entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
2984         if (!entry)
2985                 return -ENOMEM;
2986
2987         spin_lock_irqsave(&rocker->neigh_tbl_lock, lock_flags);
2988
2989         found = rocker_neigh_tbl_find(rocker, ip_addr);
2990
2991         updating = found && adding;
2992         removing = found && !adding;
2993         adding = !found && adding;
2994
2995         if (adding) {
2996                 entry->ip_addr = ip_addr;
2997                 entry->dev = rocker_port->dev;
2998                 ether_addr_copy(entry->eth_dst, eth_dst);
2999                 entry->ttl_check = true;
3000                 _rocker_neigh_add(rocker, trans, entry);
3001         } else if (removing) {
3002                 memcpy(entry, found, sizeof(*entry));
3003                 _rocker_neigh_del(trans, found);
3004         } else if (updating) {
3005                 _rocker_neigh_update(found, trans, eth_dst, true);
3006                 memcpy(entry, found, sizeof(*entry));
3007         } else {
3008                 err = -ENOENT;
3009         }
3010
3011         spin_unlock_irqrestore(&rocker->neigh_tbl_lock, lock_flags);
3012
3013         if (err)
3014                 goto err_out;
3015
3016         /* For each active neighbor, we have an L3 unicast group and
3017          * a /32 route to the neighbor, which uses the L3 unicast
3018          * group.  The L3 unicast group can also be referred to by
3019          * other routes' nexthops.
3020          */
3021
3022         err = rocker_group_l3_unicast(rocker_port, trans, flags,
3023                                       entry->index,
3024                                       rocker_port->dev->dev_addr,
3025                                       entry->eth_dst,
3026                                       rocker_port->internal_vlan_id,
3027                                       entry->ttl_check,
3028                                       rocker_port->pport);
3029         if (err) {
3030                 netdev_err(rocker_port->dev,
3031                            "Error (%d) L3 unicast group index %d\n",
3032                            err, entry->index);
3033                 goto err_out;
3034         }
3035
3036         if (adding || removing) {
3037                 group_id = ROCKER_GROUP_L3_UNICAST(entry->index);
3038                 err = rocker_flow_tbl_ucast4_routing(rocker_port, trans,
3039                                                      eth_type, ip_addr,
3040                                                      inet_make_mask(32),
3041                                                      priority, goto_tbl,
3042                                                      group_id, flags);
3043
3044                 if (err)
3045                         netdev_err(rocker_port->dev,
3046                                    "Error (%d) /32 unicast route %pI4 group 0x%08x\n",
3047                                    err, &entry->ip_addr, group_id);
3048         }
3049
3050 err_out:
3051         if (!adding)
3052                 rocker_port_kfree(trans, entry);
3053
3054         return err;
3055 }
3056
3057 static int rocker_port_ipv4_resolve(struct rocker_port *rocker_port,
3058                                     enum switchdev_trans trans, __be32 ip_addr)
3059 {
3060         struct net_device *dev = rocker_port->dev;
3061         struct neighbour *n = __ipv4_neigh_lookup(dev, (__force u32)ip_addr);
3062         int err = 0;
3063
3064         if (!n) {
3065                 n = neigh_create(&arp_tbl, &ip_addr, dev);
3066                 if (IS_ERR(n))
3067                         return IS_ERR(n);
3068         }
3069
3070         /* If the neigh is already resolved, then go ahead and
3071          * install the entry, otherwise start the ARP process to
3072          * resolve the neigh.
3073          */
3074
3075         if (n->nud_state & NUD_VALID)
3076                 err = rocker_port_ipv4_neigh(rocker_port, trans, 0,
3077                                              ip_addr, n->ha);
3078         else
3079                 neigh_event_send(n, NULL);
3080
3081         neigh_release(n);
3082         return err;
3083 }
3084
3085 static int rocker_port_ipv4_nh(struct rocker_port *rocker_port,
3086                                enum switchdev_trans trans, int flags,
3087                                __be32 ip_addr, u32 *index)
3088 {
3089         struct rocker *rocker = rocker_port->rocker;
3090         struct rocker_neigh_tbl_entry *entry;
3091         struct rocker_neigh_tbl_entry *found;
3092         unsigned long lock_flags;
3093         bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
3094         bool updating;
3095         bool removing;
3096         bool resolved = true;
3097         int err = 0;
3098
3099         entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
3100         if (!entry)
3101                 return -ENOMEM;
3102
3103         spin_lock_irqsave(&rocker->neigh_tbl_lock, lock_flags);
3104
3105         found = rocker_neigh_tbl_find(rocker, ip_addr);
3106         if (found)
3107                 *index = found->index;
3108
3109         updating = found && adding;
3110         removing = found && !adding;
3111         adding = !found && adding;
3112
3113         if (adding) {
3114                 entry->ip_addr = ip_addr;
3115                 entry->dev = rocker_port->dev;
3116                 _rocker_neigh_add(rocker, trans, entry);
3117                 *index = entry->index;
3118                 resolved = false;
3119         } else if (removing) {
3120                 _rocker_neigh_del(trans, found);
3121         } else if (updating) {
3122                 _rocker_neigh_update(found, trans, NULL, false);
3123                 resolved = !is_zero_ether_addr(found->eth_dst);
3124         } else {
3125                 err = -ENOENT;
3126         }
3127
3128         spin_unlock_irqrestore(&rocker->neigh_tbl_lock, lock_flags);
3129
3130         if (!adding)
3131                 rocker_port_kfree(trans, entry);
3132
3133         if (err)
3134                 return err;
3135
3136         /* Resolved means neigh ip_addr is resolved to neigh mac. */
3137
3138         if (!resolved)
3139                 err = rocker_port_ipv4_resolve(rocker_port, trans, ip_addr);
3140
3141         return err;
3142 }
3143
3144 static int rocker_port_vlan_flood_group(struct rocker_port *rocker_port,
3145                                         enum switchdev_trans trans,
3146                                         int flags, __be16 vlan_id)
3147 {
3148         struct rocker_port *p;
3149         const struct rocker *rocker = rocker_port->rocker;
3150         u32 group_id = ROCKER_GROUP_L2_FLOOD(vlan_id, 0);
3151         u32 *group_ids;
3152         u8 group_count = 0;
3153         int err = 0;
3154         int i;
3155
3156         group_ids = rocker_port_kcalloc(rocker_port, trans, flags,
3157                                         rocker->port_count, sizeof(u32));
3158         if (!group_ids)
3159                 return -ENOMEM;
3160
3161         /* Adjust the flood group for this VLAN.  The flood group
3162          * references an L2 interface group for each port in this
3163          * VLAN.
3164          */
3165
3166         for (i = 0; i < rocker->port_count; i++) {
3167                 p = rocker->ports[i];
3168                 if (!p)
3169                         continue;
3170                 if (!rocker_port_is_bridged(p))
3171                         continue;
3172                 if (test_bit(ntohs(vlan_id), p->vlan_bitmap)) {
3173                         group_ids[group_count++] =
3174                                 ROCKER_GROUP_L2_INTERFACE(vlan_id, p->pport);
3175                 }
3176         }
3177
3178         /* If there are no bridged ports in this VLAN, we're done */
3179         if (group_count == 0)
3180                 goto no_ports_in_vlan;
3181
3182         err = rocker_group_l2_flood(rocker_port, trans, flags, vlan_id,
3183                                     group_count, group_ids, group_id);
3184         if (err)
3185                 netdev_err(rocker_port->dev,
3186                            "Error (%d) port VLAN l2 flood group\n", err);
3187
3188 no_ports_in_vlan:
3189         rocker_port_kfree(trans, group_ids);
3190         return err;
3191 }
3192
3193 static int rocker_port_vlan_l2_groups(struct rocker_port *rocker_port,
3194                                       enum switchdev_trans trans, int flags,
3195                                       __be16 vlan_id, bool pop_vlan)
3196 {
3197         const struct rocker *rocker = rocker_port->rocker;
3198         struct rocker_port *p;
3199         bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
3200         u32 out_pport;
3201         int ref = 0;
3202         int err;
3203         int i;
3204
3205         /* An L2 interface group for this port in this VLAN, but
3206          * only when port STP state is LEARNING|FORWARDING.
3207          */
3208
3209         if (rocker_port->stp_state == BR_STATE_LEARNING ||
3210             rocker_port->stp_state == BR_STATE_FORWARDING) {
3211                 out_pport = rocker_port->pport;
3212                 err = rocker_group_l2_interface(rocker_port, trans, flags,
3213                                                 vlan_id, out_pport, pop_vlan);
3214                 if (err) {
3215                         netdev_err(rocker_port->dev,
3216                                    "Error (%d) port VLAN l2 group for pport %d\n",
3217                                    err, out_pport);
3218                         return err;
3219                 }
3220         }
3221
3222         /* An L2 interface group for this VLAN to CPU port.
3223          * Add when first port joins this VLAN and destroy when
3224          * last port leaves this VLAN.
3225          */
3226
3227         for (i = 0; i < rocker->port_count; i++) {
3228                 p = rocker->ports[i];
3229                 if (p && test_bit(ntohs(vlan_id), p->vlan_bitmap))
3230                         ref++;
3231         }
3232
3233         if ((!adding || ref != 1) && (adding || ref != 0))
3234                 return 0;
3235
3236         out_pport = 0;
3237         err = rocker_group_l2_interface(rocker_port, trans, flags,
3238                                         vlan_id, out_pport, pop_vlan);
3239         if (err) {
3240                 netdev_err(rocker_port->dev,
3241                            "Error (%d) port VLAN l2 group for CPU port\n", err);
3242                 return err;
3243         }
3244
3245         return 0;
3246 }
3247
3248 static struct rocker_ctrl {
3249         const u8 *eth_dst;
3250         const u8 *eth_dst_mask;
3251         __be16 eth_type;
3252         bool acl;
3253         bool bridge;
3254         bool term;
3255         bool copy_to_cpu;
3256 } rocker_ctrls[] = {
3257         [ROCKER_CTRL_LINK_LOCAL_MCAST] = {
3258                 /* pass link local multicast pkts up to CPU for filtering */
3259                 .eth_dst = ll_mac,
3260                 .eth_dst_mask = ll_mask,
3261                 .acl = true,
3262         },
3263         [ROCKER_CTRL_LOCAL_ARP] = {
3264                 /* pass local ARP pkts up to CPU */
3265                 .eth_dst = zero_mac,
3266                 .eth_dst_mask = zero_mac,
3267                 .eth_type = htons(ETH_P_ARP),
3268                 .acl = true,
3269         },
3270         [ROCKER_CTRL_IPV4_MCAST] = {
3271                 /* pass IPv4 mcast pkts up to CPU, RFC 1112 */
3272                 .eth_dst = ipv4_mcast,
3273                 .eth_dst_mask = ipv4_mask,
3274                 .eth_type = htons(ETH_P_IP),
3275                 .term  = true,
3276                 .copy_to_cpu = true,
3277         },
3278         [ROCKER_CTRL_IPV6_MCAST] = {
3279                 /* pass IPv6 mcast pkts up to CPU, RFC 2464 */
3280                 .eth_dst = ipv6_mcast,
3281                 .eth_dst_mask = ipv6_mask,
3282                 .eth_type = htons(ETH_P_IPV6),
3283                 .term  = true,
3284                 .copy_to_cpu = true,
3285         },
3286         [ROCKER_CTRL_DFLT_BRIDGING] = {
3287                 /* flood any pkts on vlan */
3288                 .bridge = true,
3289                 .copy_to_cpu = true,
3290         },
3291         [ROCKER_CTRL_DFLT_OVS] = {
3292                 /* pass all pkts up to CPU */
3293                 .eth_dst = zero_mac,
3294                 .eth_dst_mask = zero_mac,
3295                 .acl = true,
3296         },
3297 };
3298
3299 static int rocker_port_ctrl_vlan_acl(struct rocker_port *rocker_port,
3300                                      enum switchdev_trans trans, int flags,
3301                                      const struct rocker_ctrl *ctrl, __be16 vlan_id)
3302 {
3303         u32 in_pport = rocker_port->pport;
3304         u32 in_pport_mask = 0xffffffff;
3305         u32 out_pport = 0;
3306         const u8 *eth_src = NULL;
3307         const u8 *eth_src_mask = NULL;
3308         __be16 vlan_id_mask = htons(0xffff);
3309         u8 ip_proto = 0;
3310         u8 ip_proto_mask = 0;
3311         u8 ip_tos = 0;
3312         u8 ip_tos_mask = 0;
3313         u32 group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_pport);
3314         int err;
3315
3316         err = rocker_flow_tbl_acl(rocker_port, trans, flags,
3317                                   in_pport, in_pport_mask,
3318                                   eth_src, eth_src_mask,
3319                                   ctrl->eth_dst, ctrl->eth_dst_mask,
3320                                   ctrl->eth_type,
3321                                   vlan_id, vlan_id_mask,
3322                                   ip_proto, ip_proto_mask,
3323                                   ip_tos, ip_tos_mask,
3324                                   group_id);
3325
3326         if (err)
3327                 netdev_err(rocker_port->dev, "Error (%d) ctrl ACL\n", err);
3328
3329         return err;
3330 }
3331
3332 static int rocker_port_ctrl_vlan_bridge(struct rocker_port *rocker_port,
3333                                         enum switchdev_trans trans, int flags,
3334                                         const struct rocker_ctrl *ctrl,
3335                                         __be16 vlan_id)
3336 {
3337         enum rocker_of_dpa_table_id goto_tbl =
3338                 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
3339         u32 group_id = ROCKER_GROUP_L2_FLOOD(vlan_id, 0);
3340         u32 tunnel_id = 0;
3341         int err;
3342
3343         if (!rocker_port_is_bridged(rocker_port))
3344                 return 0;
3345
3346         err = rocker_flow_tbl_bridge(rocker_port, trans, flags,
3347                                      ctrl->eth_dst, ctrl->eth_dst_mask,
3348                                      vlan_id, tunnel_id,
3349                                      goto_tbl, group_id, ctrl->copy_to_cpu);
3350
3351         if (err)
3352                 netdev_err(rocker_port->dev, "Error (%d) ctrl FLOOD\n", err);
3353
3354         return err;
3355 }
3356
3357 static int rocker_port_ctrl_vlan_term(struct rocker_port *rocker_port,
3358                                       enum switchdev_trans trans, int flags,
3359                                       const struct rocker_ctrl *ctrl, __be16 vlan_id)
3360 {
3361         u32 in_pport_mask = 0xffffffff;
3362         __be16 vlan_id_mask = htons(0xffff);
3363         int err;
3364
3365         if (ntohs(vlan_id) == 0)
3366                 vlan_id = rocker_port->internal_vlan_id;
3367
3368         err = rocker_flow_tbl_term_mac(rocker_port, trans,
3369                                        rocker_port->pport, in_pport_mask,
3370                                        ctrl->eth_type, ctrl->eth_dst,
3371                                        ctrl->eth_dst_mask, vlan_id,
3372                                        vlan_id_mask, ctrl->copy_to_cpu,
3373                                        flags);
3374
3375         if (err)
3376                 netdev_err(rocker_port->dev, "Error (%d) ctrl term\n", err);
3377
3378         return err;
3379 }
3380
3381 static int rocker_port_ctrl_vlan(struct rocker_port *rocker_port,
3382                                  enum switchdev_trans trans, int flags,
3383                                  const struct rocker_ctrl *ctrl, __be16 vlan_id)
3384 {
3385         if (ctrl->acl)
3386                 return rocker_port_ctrl_vlan_acl(rocker_port, trans, flags,
3387                                                  ctrl, vlan_id);
3388         if (ctrl->bridge)
3389                 return rocker_port_ctrl_vlan_bridge(rocker_port, trans, flags,
3390                                                     ctrl, vlan_id);
3391
3392         if (ctrl->term)
3393                 return rocker_port_ctrl_vlan_term(rocker_port, trans, flags,
3394                                                   ctrl, vlan_id);
3395
3396         return -EOPNOTSUPP;
3397 }
3398
3399 static int rocker_port_ctrl_vlan_add(struct rocker_port *rocker_port,
3400                                      enum switchdev_trans trans, int flags,
3401                                      __be16 vlan_id)
3402 {
3403         int err = 0;
3404         int i;
3405
3406         for (i = 0; i < ROCKER_CTRL_MAX; i++) {
3407                 if (rocker_port->ctrls[i]) {
3408                         err = rocker_port_ctrl_vlan(rocker_port, trans, flags,
3409                                                     &rocker_ctrls[i], vlan_id);
3410                         if (err)
3411                                 return err;
3412                 }
3413         }
3414
3415         return err;
3416 }
3417
3418 static int rocker_port_ctrl(struct rocker_port *rocker_port,
3419                             enum switchdev_trans trans, int flags,
3420                             const struct rocker_ctrl *ctrl)
3421 {
3422         u16 vid;
3423         int err = 0;
3424
3425         for (vid = 1; vid < VLAN_N_VID; vid++) {
3426                 if (!test_bit(vid, rocker_port->vlan_bitmap))
3427                         continue;
3428                 err = rocker_port_ctrl_vlan(rocker_port, trans, flags,
3429                                             ctrl, htons(vid));
3430                 if (err)
3431                         break;
3432         }
3433
3434         return err;
3435 }
3436
3437 static int rocker_port_vlan(struct rocker_port *rocker_port,
3438                             enum switchdev_trans trans, int flags, u16 vid)
3439 {
3440         enum rocker_of_dpa_table_id goto_tbl =
3441                 ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC;
3442         u32 in_pport = rocker_port->pport;
3443         __be16 vlan_id = htons(vid);
3444         __be16 vlan_id_mask = htons(0xffff);
3445         __be16 internal_vlan_id;
3446         bool untagged;
3447         bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
3448         int err;
3449
3450         internal_vlan_id = rocker_port_vid_to_vlan(rocker_port, vid, &untagged);
3451
3452         if (adding && test_bit(ntohs(internal_vlan_id),
3453                                rocker_port->vlan_bitmap))
3454                         return 0; /* already added */
3455         else if (!adding && !test_bit(ntohs(internal_vlan_id),
3456                                       rocker_port->vlan_bitmap))
3457                         return 0; /* already removed */
3458
3459         change_bit(ntohs(internal_vlan_id), rocker_port->vlan_bitmap);
3460
3461         if (adding) {
3462                 err = rocker_port_ctrl_vlan_add(rocker_port, trans, flags,
3463                                                 internal_vlan_id);
3464                 if (err) {
3465                         netdev_err(rocker_port->dev,
3466                                    "Error (%d) port ctrl vlan add\n", err);
3467                         goto err_out;
3468                 }
3469         }
3470
3471         err = rocker_port_vlan_l2_groups(rocker_port, trans, flags,
3472                                          internal_vlan_id, untagged);
3473         if (err) {
3474                 netdev_err(rocker_port->dev,
3475                            "Error (%d) port VLAN l2 groups\n", err);
3476                 goto err_out;
3477         }
3478
3479         err = rocker_port_vlan_flood_group(rocker_port, trans, flags,
3480                                            internal_vlan_id);
3481         if (err) {
3482                 netdev_err(rocker_port->dev,
3483                            "Error (%d) port VLAN l2 flood group\n", err);
3484                 goto err_out;
3485         }
3486
3487         err = rocker_flow_tbl_vlan(rocker_port, trans, flags,
3488                                    in_pport, vlan_id, vlan_id_mask,
3489                                    goto_tbl, untagged, internal_vlan_id);
3490         if (err)
3491                 netdev_err(rocker_port->dev,
3492                            "Error (%d) port VLAN table\n", err);
3493
3494 err_out:
3495         if (trans == SWITCHDEV_TRANS_PREPARE)
3496                 change_bit(ntohs(internal_vlan_id), rocker_port->vlan_bitmap);
3497
3498         return err;
3499 }
3500
3501 static int rocker_port_ig_tbl(struct rocker_port *rocker_port,
3502                               enum switchdev_trans trans, int flags)
3503 {
3504         enum rocker_of_dpa_table_id goto_tbl;
3505         u32 in_pport;
3506         u32 in_pport_mask;
3507         int err;
3508
3509         /* Normal Ethernet Frames.  Matches pkts from any local physical
3510          * ports.  Goto VLAN tbl.
3511          */
3512
3513         in_pport = 0;
3514         in_pport_mask = 0xffff0000;
3515         goto_tbl = ROCKER_OF_DPA_TABLE_ID_VLAN;
3516
3517         err = rocker_flow_tbl_ig_port(rocker_port, trans, flags,
3518                                       in_pport, in_pport_mask,
3519                                       goto_tbl);
3520         if (err)
3521                 netdev_err(rocker_port->dev,
3522                            "Error (%d) ingress port table entry\n", err);
3523
3524         return err;
3525 }
3526
3527 struct rocker_fdb_learn_work {
3528         struct work_struct work;
3529         struct rocker_port *rocker_port;
3530         enum switchdev_trans trans;
3531         int flags;
3532         u8 addr[ETH_ALEN];
3533         u16 vid;
3534 };
3535
3536 static void rocker_port_fdb_learn_work(struct work_struct *work)
3537 {
3538         const struct rocker_fdb_learn_work *lw =
3539                 container_of(work, struct rocker_fdb_learn_work, work);
3540         bool removing = (lw->flags & ROCKER_OP_FLAG_REMOVE);
3541         bool learned = (lw->flags & ROCKER_OP_FLAG_LEARNED);
3542         struct switchdev_notifier_fdb_info info;
3543
3544         info.addr = lw->addr;
3545         info.vid = lw->vid;
3546
3547         if (learned && removing)
3548                 call_switchdev_notifiers(SWITCHDEV_FDB_DEL,
3549                                          lw->rocker_port->dev, &info.info);
3550         else if (learned && !removing)
3551                 call_switchdev_notifiers(SWITCHDEV_FDB_ADD,
3552                                          lw->rocker_port->dev, &info.info);
3553
3554         rocker_port_kfree(lw->trans, work);
3555 }
3556
3557 static int rocker_port_fdb_learn(struct rocker_port *rocker_port,
3558                                  enum switchdev_trans trans, int flags,
3559                                  const u8 *addr, __be16 vlan_id)
3560 {
3561         struct rocker_fdb_learn_work *lw;
3562         enum rocker_of_dpa_table_id goto_tbl =
3563                 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
3564         u32 out_pport = rocker_port->pport;
3565         u32 tunnel_id = 0;
3566         u32 group_id = ROCKER_GROUP_NONE;
3567         bool syncing = !!(rocker_port->brport_flags & BR_LEARNING_SYNC);
3568         bool copy_to_cpu = false;
3569         int err;
3570
3571         if (rocker_port_is_bridged(rocker_port))
3572                 group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_pport);
3573
3574         if (!(flags & ROCKER_OP_FLAG_REFRESH)) {
3575                 err = rocker_flow_tbl_bridge(rocker_port, trans, flags, addr,
3576                                              NULL, vlan_id, tunnel_id, goto_tbl,
3577                                              group_id, copy_to_cpu);
3578                 if (err)
3579                         return err;
3580         }
3581
3582         if (!syncing)
3583                 return 0;
3584
3585         if (!rocker_port_is_bridged(rocker_port))
3586                 return 0;
3587
3588         lw = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*lw));
3589         if (!lw)
3590                 return -ENOMEM;
3591
3592         INIT_WORK(&lw->work, rocker_port_fdb_learn_work);
3593
3594         lw->rocker_port = rocker_port;
3595         lw->trans = trans;
3596         lw->flags = flags;
3597         ether_addr_copy(lw->addr, addr);
3598         lw->vid = rocker_port_vlan_to_vid(rocker_port, vlan_id);
3599
3600         if (trans == SWITCHDEV_TRANS_PREPARE)
3601                 rocker_port_kfree(trans, lw);
3602         else
3603                 schedule_work(&lw->work);
3604
3605         return 0;
3606 }
3607
3608 static struct rocker_fdb_tbl_entry *
3609 rocker_fdb_tbl_find(const struct rocker *rocker,
3610                     const struct rocker_fdb_tbl_entry *match)
3611 {
3612         struct rocker_fdb_tbl_entry *found;
3613
3614         hash_for_each_possible(rocker->fdb_tbl, found, entry, match->key_crc32)
3615                 if (memcmp(&found->key, &match->key, sizeof(found->key)) == 0)
3616                         return found;
3617
3618         return NULL;
3619 }
3620
3621 static int rocker_port_fdb(struct rocker_port *rocker_port,
3622                            enum switchdev_trans trans,
3623                            const unsigned char *addr,
3624                            __be16 vlan_id, int flags)
3625 {
3626         struct rocker *rocker = rocker_port->rocker;
3627         struct rocker_fdb_tbl_entry *fdb;
3628         struct rocker_fdb_tbl_entry *found;
3629         bool removing = (flags & ROCKER_OP_FLAG_REMOVE);
3630         unsigned long lock_flags;
3631
3632         fdb = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*fdb));
3633         if (!fdb)
3634                 return -ENOMEM;
3635
3636         fdb->learned = (flags & ROCKER_OP_FLAG_LEARNED);
3637         fdb->key.pport = rocker_port->pport;
3638         ether_addr_copy(fdb->key.addr, addr);
3639         fdb->key.vlan_id = vlan_id;
3640         fdb->key_crc32 = crc32(~0, &fdb->key, sizeof(fdb->key));
3641
3642         spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags);
3643
3644         found = rocker_fdb_tbl_find(rocker, fdb);
3645
3646         if (removing && found) {
3647                 rocker_port_kfree(trans, fdb);
3648                 if (trans != SWITCHDEV_TRANS_PREPARE)
3649                         hash_del(&found->entry);
3650         } else if (!removing && !found) {
3651                 if (trans != SWITCHDEV_TRANS_PREPARE)
3652                         hash_add(rocker->fdb_tbl, &fdb->entry, fdb->key_crc32);
3653         }
3654
3655         spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags);
3656
3657         /* Check if adding and already exists, or removing and can't find */
3658         if (!found != !removing) {
3659                 rocker_port_kfree(trans, fdb);
3660                 if (!found && removing)
3661                         return 0;
3662                 /* Refreshing existing to update aging timers */
3663                 flags |= ROCKER_OP_FLAG_REFRESH;
3664         }
3665
3666         return rocker_port_fdb_learn(rocker_port, trans, flags, addr, vlan_id);
3667 }
3668
3669 static int rocker_port_fdb_flush(struct rocker_port *rocker_port,
3670                                  enum switchdev_trans trans, int flags)
3671 {
3672         struct rocker *rocker = rocker_port->rocker;
3673         struct rocker_fdb_tbl_entry *found;
3674         unsigned long lock_flags;
3675         struct hlist_node *tmp;
3676         int bkt;
3677         int err = 0;
3678
3679         if (rocker_port->stp_state == BR_STATE_LEARNING ||
3680             rocker_port->stp_state == BR_STATE_FORWARDING)
3681                 return 0;
3682
3683         flags |= ROCKER_OP_FLAG_REMOVE;
3684
3685         spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags);
3686
3687         hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, found, entry) {
3688                 if (found->key.pport != rocker_port->pport)
3689                         continue;
3690                 if (!found->learned)
3691                         continue;
3692                 err = rocker_port_fdb_learn(rocker_port, trans, flags,
3693                                             found->key.addr,
3694                                             found->key.vlan_id);
3695                 if (err)
3696                         goto err_out;
3697                 if (trans != SWITCHDEV_TRANS_PREPARE)
3698                         hash_del(&found->entry);
3699         }
3700
3701 err_out:
3702         spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags);
3703
3704         return err;
3705 }
3706
3707 static int rocker_port_router_mac(struct rocker_port *rocker_port,
3708                                   enum switchdev_trans trans, int flags,
3709                                   __be16 vlan_id)
3710 {
3711         u32 in_pport_mask = 0xffffffff;
3712         __be16 eth_type;
3713         const u8 *dst_mac_mask = ff_mac;
3714         __be16 vlan_id_mask = htons(0xffff);
3715         bool copy_to_cpu = false;
3716         int err;
3717
3718         if (ntohs(vlan_id) == 0)
3719                 vlan_id = rocker_port->internal_vlan_id;
3720
3721         eth_type = htons(ETH_P_IP);
3722         err = rocker_flow_tbl_term_mac(rocker_port, trans,
3723                                        rocker_port->pport, in_pport_mask,
3724                                        eth_type, rocker_port->dev->dev_addr,
3725                                        dst_mac_mask, vlan_id, vlan_id_mask,
3726                                        copy_to_cpu, flags);
3727         if (err)
3728                 return err;
3729
3730         eth_type = htons(ETH_P_IPV6);
3731         err = rocker_flow_tbl_term_mac(rocker_port, trans,
3732                                        rocker_port->pport, in_pport_mask,
3733                                        eth_type, rocker_port->dev->dev_addr,
3734                                        dst_mac_mask, vlan_id, vlan_id_mask,
3735                                        copy_to_cpu, flags);
3736
3737         return err;
3738 }
3739
3740 static int rocker_port_fwding(struct rocker_port *rocker_port,
3741                               enum switchdev_trans trans, int flags)
3742 {
3743         bool pop_vlan;
3744         u32 out_pport;
3745         __be16 vlan_id;
3746         u16 vid;
3747         int err;
3748
3749         /* Port will be forwarding-enabled if its STP state is LEARNING
3750          * or FORWARDING.  Traffic from CPU can still egress, regardless of
3751          * port STP state.  Use L2 interface group on port VLANs as a way
3752          * to toggle port forwarding: if forwarding is disabled, L2
3753          * interface group will not exist.
3754          */
3755
3756         if (rocker_port->stp_state != BR_STATE_LEARNING &&
3757             rocker_port->stp_state != BR_STATE_FORWARDING)
3758                 flags |= ROCKER_OP_FLAG_REMOVE;
3759
3760         out_pport = rocker_port->pport;
3761         for (vid = 1; vid < VLAN_N_VID; vid++) {
3762                 if (!test_bit(vid, rocker_port->vlan_bitmap))
3763                         continue;
3764                 vlan_id = htons(vid);
3765                 pop_vlan = rocker_vlan_id_is_internal(vlan_id);
3766                 err = rocker_group_l2_interface(rocker_port, trans, flags,
3767                                                 vlan_id, out_pport, pop_vlan);
3768                 if (err) {
3769                         netdev_err(rocker_port->dev,
3770                                    "Error (%d) port VLAN l2 group for pport %d\n",
3771                                    err, out_pport);
3772                         return err;
3773                 }
3774         }
3775
3776         return 0;
3777 }
3778
3779 static int rocker_port_stp_update(struct rocker_port *rocker_port,
3780                                   enum switchdev_trans trans, int flags,
3781                                   u8 state)
3782 {
3783         bool want[ROCKER_CTRL_MAX] = { 0, };
3784         bool prev_ctrls[ROCKER_CTRL_MAX];
3785         u8 prev_state;
3786         int err;
3787         int i;
3788
3789         if (trans == SWITCHDEV_TRANS_PREPARE) {
3790                 memcpy(prev_ctrls, rocker_port->ctrls, sizeof(prev_ctrls));
3791                 prev_state = rocker_port->stp_state;
3792         }
3793
3794         if (rocker_port->stp_state == state)
3795                 return 0;
3796
3797         rocker_port->stp_state = state;
3798
3799         switch (state) {
3800         case BR_STATE_DISABLED:
3801                 /* port is completely disabled */
3802                 break;
3803         case BR_STATE_LISTENING:
3804         case BR_STATE_BLOCKING:
3805                 want[ROCKER_CTRL_LINK_LOCAL_MCAST] = true;
3806                 break;
3807         case BR_STATE_LEARNING:
3808         case BR_STATE_FORWARDING:
3809                 if (!rocker_port_is_ovsed(rocker_port))
3810                         want[ROCKER_CTRL_LINK_LOCAL_MCAST] = true;
3811                 want[ROCKER_CTRL_IPV4_MCAST] = true;
3812                 want[ROCKER_CTRL_IPV6_MCAST] = true;
3813                 if (rocker_port_is_bridged(rocker_port))
3814                         want[ROCKER_CTRL_DFLT_BRIDGING] = true;
3815                 else if (rocker_port_is_ovsed(rocker_port))
3816                         want[ROCKER_CTRL_DFLT_OVS] = true;
3817                 else
3818                         want[ROCKER_CTRL_LOCAL_ARP] = true;
3819                 break;
3820         }
3821
3822         for (i = 0; i < ROCKER_CTRL_MAX; i++) {
3823                 if (want[i] != rocker_port->ctrls[i]) {
3824                         int ctrl_flags = flags |
3825                                          (want[i] ? 0 : ROCKER_OP_FLAG_REMOVE);
3826                         err = rocker_port_ctrl(rocker_port, trans, ctrl_flags,
3827                                                &rocker_ctrls[i]);
3828                         if (err)
3829                                 goto err_out;
3830                         rocker_port->ctrls[i] = want[i];
3831                 }
3832         }
3833
3834         err = rocker_port_fdb_flush(rocker_port, trans, flags);
3835         if (err)
3836                 goto err_out;
3837
3838         err = rocker_port_fwding(rocker_port, trans, flags);
3839
3840 err_out:
3841         if (trans == SWITCHDEV_TRANS_PREPARE) {
3842                 memcpy(rocker_port->ctrls, prev_ctrls, sizeof(prev_ctrls));
3843                 rocker_port->stp_state = prev_state;
3844         }
3845
3846         return err;
3847 }
3848
3849 static int rocker_port_fwd_enable(struct rocker_port *rocker_port,
3850                                   enum switchdev_trans trans, int flags)
3851 {
3852         if (rocker_port_is_bridged(rocker_port))
3853                 /* bridge STP will enable port */
3854                 return 0;
3855
3856         /* port is not bridged, so simulate going to FORWARDING state */
3857         return rocker_port_stp_update(rocker_port, trans, flags,
3858                                       BR_STATE_FORWARDING);
3859 }
3860
3861 static int rocker_port_fwd_disable(struct rocker_port *rocker_port,
3862                                    enum switchdev_trans trans, int flags)
3863 {
3864         if (rocker_port_is_bridged(rocker_port))
3865                 /* bridge STP will disable port */
3866                 return 0;
3867
3868         /* port is not bridged, so simulate going to DISABLED state */
3869         return rocker_port_stp_update(rocker_port, trans, flags,
3870                                       BR_STATE_DISABLED);
3871 }
3872
3873 static struct rocker_internal_vlan_tbl_entry *
3874 rocker_internal_vlan_tbl_find(const struct rocker *rocker, int ifindex)
3875 {
3876         struct rocker_internal_vlan_tbl_entry *found;
3877
3878         hash_for_each_possible(rocker->internal_vlan_tbl, found,
3879                                entry, ifindex) {
3880                 if (found->ifindex == ifindex)
3881                         return found;
3882         }
3883
3884         return NULL;
3885 }
3886
3887 static __be16 rocker_port_internal_vlan_id_get(struct rocker_port *rocker_port,
3888                                                int ifindex)
3889 {
3890         struct rocker *rocker = rocker_port->rocker;
3891         struct rocker_internal_vlan_tbl_entry *entry;
3892         struct rocker_internal_vlan_tbl_entry *found;
3893         unsigned long lock_flags;
3894         int i;
3895
3896         entry = kzalloc(sizeof(*entry), GFP_KERNEL);
3897         if (!entry)
3898                 return 0;
3899
3900         entry->ifindex = ifindex;
3901
3902         spin_lock_irqsave(&rocker->internal_vlan_tbl_lock, lock_flags);
3903
3904         found = rocker_internal_vlan_tbl_find(rocker, ifindex);
3905         if (found) {
3906                 kfree(entry);
3907                 goto found;
3908         }
3909
3910         found = entry;
3911         hash_add(rocker->internal_vlan_tbl, &found->entry, found->ifindex);
3912
3913         for (i = 0; i < ROCKER_N_INTERNAL_VLANS; i++) {
3914                 if (test_and_set_bit(i, rocker->internal_vlan_bitmap))
3915                         continue;
3916                 found->vlan_id = htons(ROCKER_INTERNAL_VLAN_ID_BASE + i);
3917                 goto found;
3918         }
3919
3920         netdev_err(rocker_port->dev, "Out of internal VLAN IDs\n");
3921
3922 found:
3923         found->ref_count++;
3924         spin_unlock_irqrestore(&rocker->internal_vlan_tbl_lock, lock_flags);
3925
3926         return found->vlan_id;
3927 }
3928
3929 static void
3930 rocker_port_internal_vlan_id_put(const struct rocker_port *rocker_port,
3931                                  int ifindex)
3932 {
3933         struct rocker *rocker = rocker_port->rocker;
3934         struct rocker_internal_vlan_tbl_entry *found;
3935         unsigned long lock_flags;
3936         unsigned long bit;
3937
3938         spin_lock_irqsave(&rocker->internal_vlan_tbl_lock, lock_flags);
3939
3940         found = rocker_internal_vlan_tbl_find(rocker, ifindex);
3941         if (!found) {
3942                 netdev_err(rocker_port->dev,
3943                            "ifindex (%d) not found in internal VLAN tbl\n",
3944                            ifindex);
3945                 goto not_found;
3946         }
3947
3948         if (--found->ref_count <= 0) {
3949                 bit = ntohs(found->vlan_id) - ROCKER_INTERNAL_VLAN_ID_BASE;
3950                 clear_bit(bit, rocker->internal_vlan_bitmap);
3951                 hash_del(&found->entry);
3952                 kfree(found);
3953         }
3954
3955 not_found:
3956         spin_unlock_irqrestore(&rocker->internal_vlan_tbl_lock, lock_flags);
3957 }
3958
3959 static int rocker_port_fib_ipv4(struct rocker_port *rocker_port,
3960                                 enum switchdev_trans trans, __be32 dst,
3961                                 int dst_len, const struct fib_info *fi,
3962                                 u32 tb_id, int flags)
3963 {
3964         const struct fib_nh *nh;
3965         __be16 eth_type = htons(ETH_P_IP);
3966         __be32 dst_mask = inet_make_mask(dst_len);
3967         __be16 internal_vlan_id = rocker_port->internal_vlan_id;
3968         u32 priority = fi->fib_priority;
3969         enum rocker_of_dpa_table_id goto_tbl =
3970                 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
3971         u32 group_id;
3972         bool nh_on_port;
3973         bool has_gw;
3974         u32 index;
3975         int err;
3976
3977         /* XXX support ECMP */
3978
3979         nh = fi->fib_nh;
3980         nh_on_port = (fi->fib_dev == rocker_port->dev);
3981         has_gw = !!nh->nh_gw;
3982
3983         if (has_gw && nh_on_port) {
3984                 err = rocker_port_ipv4_nh(rocker_port, trans, flags,
3985                                           nh->nh_gw, &index);
3986                 if (err)
3987                         return err;
3988
3989                 group_id = ROCKER_GROUP_L3_UNICAST(index);
3990         } else {
3991                 /* Send to CPU for processing */
3992                 group_id = ROCKER_GROUP_L2_INTERFACE(internal_vlan_id, 0);
3993         }
3994
3995         err = rocker_flow_tbl_ucast4_routing(rocker_port, trans, eth_type, dst,
3996                                              dst_mask, priority, goto_tbl,
3997                                              group_id, flags);
3998         if (err)
3999                 netdev_err(rocker_port->dev, "Error (%d) IPv4 route %pI4\n",
4000                            err, &dst);
4001
4002         return err;
4003 }
4004
4005 /*****************
4006  * Net device ops
4007  *****************/
4008
4009 static int rocker_port_open(struct net_device *dev)
4010 {
4011         struct rocker_port *rocker_port = netdev_priv(dev);
4012         int err;
4013
4014         err = rocker_port_dma_rings_init(rocker_port);
4015         if (err)
4016                 return err;
4017
4018         err = request_irq(rocker_msix_tx_vector(rocker_port),
4019                           rocker_tx_irq_handler, 0,
4020                           rocker_driver_name, rocker_port);
4021         if (err) {
4022                 netdev_err(rocker_port->dev, "cannot assign tx irq\n");
4023                 goto err_request_tx_irq;
4024         }
4025
4026         err = request_irq(rocker_msix_rx_vector(rocker_port),
4027                           rocker_rx_irq_handler, 0,
4028                           rocker_driver_name, rocker_port);
4029         if (err) {
4030                 netdev_err(rocker_port->dev, "cannot assign rx irq\n");
4031                 goto err_request_rx_irq;
4032         }
4033
4034         err = rocker_port_fwd_enable(rocker_port, SWITCHDEV_TRANS_NONE, 0);
4035         if (err)
4036                 goto err_fwd_enable;
4037
4038         napi_enable(&rocker_port->napi_tx);
4039         napi_enable(&rocker_port->napi_rx);
4040         if (!dev->proto_down)
4041                 rocker_port_set_enable(rocker_port, true);
4042         netif_start_queue(dev);
4043         return 0;
4044
4045 err_fwd_enable:
4046         free_irq(rocker_msix_rx_vector(rocker_port), rocker_port);
4047 err_request_rx_irq:
4048         free_irq(rocker_msix_tx_vector(rocker_port), rocker_port);
4049 err_request_tx_irq:
4050         rocker_port_dma_rings_fini(rocker_port);
4051         return err;
4052 }
4053
4054 static int rocker_port_stop(struct net_device *dev)
4055 {
4056         struct rocker_port *rocker_port = netdev_priv(dev);
4057
4058         netif_stop_queue(dev);
4059         rocker_port_set_enable(rocker_port, false);
4060         napi_disable(&rocker_port->napi_rx);
4061         napi_disable(&rocker_port->napi_tx);
4062         rocker_port_fwd_disable(rocker_port, SWITCHDEV_TRANS_NONE,
4063                                 ROCKER_OP_FLAG_NOWAIT);
4064         free_irq(rocker_msix_rx_vector(rocker_port), rocker_port);
4065         free_irq(rocker_msix_tx_vector(rocker_port), rocker_port);
4066         rocker_port_dma_rings_fini(rocker_port);
4067
4068         return 0;
4069 }
4070
4071 static void rocker_tx_desc_frags_unmap(const struct rocker_port *rocker_port,
4072                                        const struct rocker_desc_info *desc_info)
4073 {
4074         const struct rocker *rocker = rocker_port->rocker;
4075         struct pci_dev *pdev = rocker->pdev;
4076         const struct rocker_tlv *attrs[ROCKER_TLV_TX_MAX + 1];
4077         struct rocker_tlv *attr;
4078         int rem;
4079
4080         rocker_tlv_parse_desc(attrs, ROCKER_TLV_TX_MAX, desc_info);
4081         if (!attrs[ROCKER_TLV_TX_FRAGS])
4082                 return;
4083         rocker_tlv_for_each_nested(attr, attrs[ROCKER_TLV_TX_FRAGS], rem) {
4084                 const struct rocker_tlv *frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_MAX + 1];
4085                 dma_addr_t dma_handle;
4086                 size_t len;
4087
4088                 if (rocker_tlv_type(attr) != ROCKER_TLV_TX_FRAG)
4089                         continue;
4090                 rocker_tlv_parse_nested(frag_attrs, ROCKER_TLV_TX_FRAG_ATTR_MAX,
4091                                         attr);
4092                 if (!frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_ADDR] ||
4093                     !frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_LEN])
4094                         continue;
4095                 dma_handle = rocker_tlv_get_u64(frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_ADDR]);
4096                 len = rocker_tlv_get_u16(frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_LEN]);
4097                 pci_unmap_single(pdev, dma_handle, len, DMA_TO_DEVICE);
4098         }
4099 }
4100
4101 static int rocker_tx_desc_frag_map_put(const struct rocker_port *rocker_port,
4102                                        struct rocker_desc_info *desc_info,
4103                                        char *buf, size_t buf_len)
4104 {
4105         const struct rocker *rocker = rocker_port->rocker;
4106         struct pci_dev *pdev = rocker->pdev;
4107         dma_addr_t dma_handle;
4108         struct rocker_tlv *frag;
4109
4110         dma_handle = pci_map_single(pdev, buf, buf_len, DMA_TO_DEVICE);
4111         if (unlikely(pci_dma_mapping_error(pdev, dma_handle))) {
4112                 if (net_ratelimit())
4113                         netdev_err(rocker_port->dev, "failed to dma map tx frag\n");
4114                 return -EIO;
4115         }
4116         frag = rocker_tlv_nest_start(desc_info, ROCKER_TLV_TX_FRAG);
4117         if (!frag)
4118                 goto unmap_frag;
4119         if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_TX_FRAG_ATTR_ADDR,
4120                                dma_handle))
4121                 goto nest_cancel;
4122         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_TX_FRAG_ATTR_LEN,
4123                                buf_len))
4124                 goto nest_cancel;
4125         rocker_tlv_nest_end(desc_info, frag);
4126         return 0;
4127
4128 nest_cancel:
4129         rocker_tlv_nest_cancel(desc_info, frag);
4130 unmap_frag:
4131         pci_unmap_single(pdev, dma_handle, buf_len, DMA_TO_DEVICE);
4132         return -EMSGSIZE;
4133 }
4134
4135 static netdev_tx_t rocker_port_xmit(struct sk_buff *skb, struct net_device *dev)
4136 {
4137         struct rocker_port *rocker_port = netdev_priv(dev);
4138         struct rocker *rocker = rocker_port->rocker;
4139         struct rocker_desc_info *desc_info;
4140         struct rocker_tlv *frags;
4141         int i;
4142         int err;
4143
4144         desc_info = rocker_desc_head_get(&rocker_port->tx_ring);
4145         if (unlikely(!desc_info)) {
4146                 if (net_ratelimit())
4147                         netdev_err(dev, "tx ring full when queue awake\n");
4148                 return NETDEV_TX_BUSY;
4149         }
4150
4151         rocker_desc_cookie_ptr_set(desc_info, skb);
4152
4153         frags = rocker_tlv_nest_start(desc_info, ROCKER_TLV_TX_FRAGS);
4154         if (!frags)
4155                 goto out;
4156         err = rocker_tx_desc_frag_map_put(rocker_port, desc_info,
4157                                           skb->data, skb_headlen(skb));
4158         if (err)
4159                 goto nest_cancel;
4160         if (skb_shinfo(skb)->nr_frags > ROCKER_TX_FRAGS_MAX)
4161                 goto nest_cancel;
4162
4163         for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
4164                 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
4165
4166                 err = rocker_tx_desc_frag_map_put(rocker_port, desc_info,
4167                                                   skb_frag_address(frag),
4168                                                   skb_frag_size(frag));
4169                 if (err)
4170                         goto unmap_frags;
4171         }
4172         rocker_tlv_nest_end(desc_info, frags);
4173
4174         rocker_desc_gen_clear(desc_info);
4175         rocker_desc_head_set(rocker, &rocker_port->tx_ring, desc_info);
4176
4177         desc_info = rocker_desc_head_get(&rocker_port->tx_ring);
4178         if (!desc_info)
4179                 netif_stop_queue(dev);
4180
4181         return NETDEV_TX_OK;
4182
4183 unmap_frags:
4184         rocker_tx_desc_frags_unmap(rocker_port, desc_info);
4185 nest_cancel:
4186         rocker_tlv_nest_cancel(desc_info, frags);
4187 out:
4188         dev_kfree_skb(skb);
4189         dev->stats.tx_dropped++;
4190
4191         return NETDEV_TX_OK;
4192 }
4193
4194 static int rocker_port_set_mac_address(struct net_device *dev, void *p)
4195 {
4196         struct sockaddr *addr = p;
4197         struct rocker_port *rocker_port = netdev_priv(dev);
4198         int err;
4199
4200         if (!is_valid_ether_addr(addr->sa_data))
4201                 return -EADDRNOTAVAIL;
4202
4203         err = rocker_cmd_set_port_settings_macaddr(rocker_port, addr->sa_data);
4204         if (err)
4205                 return err;
4206         memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
4207         return 0;
4208 }
4209
4210 static int rocker_port_change_mtu(struct net_device *dev, int new_mtu)
4211 {
4212         struct rocker_port *rocker_port = netdev_priv(dev);
4213         int running = netif_running(dev);
4214         int err;
4215
4216 #define ROCKER_PORT_MIN_MTU     68
4217 #define ROCKER_PORT_MAX_MTU     9000
4218
4219         if (new_mtu < ROCKER_PORT_MIN_MTU || new_mtu > ROCKER_PORT_MAX_MTU)
4220                 return -EINVAL;
4221
4222         if (running)
4223                 rocker_port_stop(dev);
4224
4225         netdev_info(dev, "MTU change from %d to %d\n", dev->mtu, new_mtu);
4226         dev->mtu = new_mtu;
4227
4228         err = rocker_cmd_set_port_settings_mtu(rocker_port, new_mtu);
4229         if (err)
4230                 return err;
4231
4232         if (running)
4233                 err = rocker_port_open(dev);
4234
4235         return err;
4236 }
4237
4238 static int rocker_port_get_phys_port_name(struct net_device *dev,
4239                                           char *buf, size_t len)
4240 {
4241         struct rocker_port *rocker_port = netdev_priv(dev);
4242         struct port_name name = { .buf = buf, .len = len };
4243         int err;
4244
4245         err = rocker_cmd_exec(rocker_port, SWITCHDEV_TRANS_NONE, 0,
4246                               rocker_cmd_get_port_settings_prep, NULL,
4247                               rocker_cmd_get_port_settings_phys_name_proc,
4248                               &name);
4249
4250         return err ? -EOPNOTSUPP : 0;
4251 }
4252
4253 static int rocker_port_change_proto_down(struct net_device *dev,
4254                                          bool proto_down)
4255 {
4256         struct rocker_port *rocker_port = netdev_priv(dev);
4257
4258         if (rocker_port->dev->flags & IFF_UP)
4259                 rocker_port_set_enable(rocker_port, !proto_down);
4260         rocker_port->dev->proto_down = proto_down;
4261         return 0;
4262 }
4263
4264 static const struct net_device_ops rocker_port_netdev_ops = {
4265         .ndo_open                       = rocker_port_open,
4266         .ndo_stop                       = rocker_port_stop,
4267         .ndo_start_xmit                 = rocker_port_xmit,
4268         .ndo_set_mac_address            = rocker_port_set_mac_address,
4269         .ndo_change_mtu                 = rocker_port_change_mtu,
4270         .ndo_bridge_getlink             = switchdev_port_bridge_getlink,
4271         .ndo_bridge_setlink             = switchdev_port_bridge_setlink,
4272         .ndo_bridge_dellink             = switchdev_port_bridge_dellink,
4273         .ndo_fdb_add                    = switchdev_port_fdb_add,
4274         .ndo_fdb_del                    = switchdev_port_fdb_del,
4275         .ndo_fdb_dump                   = switchdev_port_fdb_dump,
4276         .ndo_get_phys_port_name         = rocker_port_get_phys_port_name,
4277         .ndo_change_proto_down          = rocker_port_change_proto_down,
4278 };
4279
4280 /********************
4281  * swdev interface
4282  ********************/
4283
4284 static int rocker_port_attr_get(struct net_device *dev,
4285                                 struct switchdev_attr *attr)
4286 {
4287         const struct rocker_port *rocker_port = netdev_priv(dev);
4288         const struct rocker *rocker = rocker_port->rocker;
4289
4290         switch (attr->id) {
4291         case SWITCHDEV_ATTR_PORT_PARENT_ID:
4292                 attr->u.ppid.id_len = sizeof(rocker->hw.id);
4293                 memcpy(&attr->u.ppid.id, &rocker->hw.id, attr->u.ppid.id_len);
4294                 break;
4295         case SWITCHDEV_ATTR_PORT_BRIDGE_FLAGS:
4296                 attr->u.brport_flags = rocker_port->brport_flags;
4297                 break;
4298         default:
4299                 return -EOPNOTSUPP;
4300         }
4301
4302         return 0;
4303 }
4304
4305 static void rocker_port_trans_abort(const struct rocker_port *rocker_port)
4306 {
4307         struct list_head *mem, *tmp;
4308
4309         list_for_each_safe(mem, tmp, &rocker_port->trans_mem) {
4310                 list_del(mem);
4311                 kfree(mem);
4312         }
4313 }
4314
4315 static int rocker_port_brport_flags_set(struct rocker_port *rocker_port,
4316                                         enum switchdev_trans trans,
4317                                         unsigned long brport_flags)
4318 {
4319         unsigned long orig_flags;
4320         int err = 0;
4321
4322         orig_flags = rocker_port->brport_flags;
4323         rocker_port->brport_flags = brport_flags;
4324         if ((orig_flags ^ rocker_port->brport_flags) & BR_LEARNING)
4325                 err = rocker_port_set_learning(rocker_port, trans);
4326
4327         if (trans == SWITCHDEV_TRANS_PREPARE)
4328                 rocker_port->brport_flags = orig_flags;
4329
4330         return err;
4331 }
4332
4333 static int rocker_port_attr_set(struct net_device *dev,
4334                                 struct switchdev_attr *attr)
4335 {
4336         struct rocker_port *rocker_port = netdev_priv(dev);
4337         int err = 0;
4338
4339         switch (attr->trans) {
4340         case SWITCHDEV_TRANS_PREPARE:
4341                 BUG_ON(!list_empty(&rocker_port->trans_mem));
4342                 break;
4343         case SWITCHDEV_TRANS_ABORT:
4344                 rocker_port_trans_abort(rocker_port);
4345                 return 0;
4346         default:
4347                 break;
4348         }
4349
4350         switch (attr->id) {
4351         case SWITCHDEV_ATTR_PORT_STP_STATE:
4352                 err = rocker_port_stp_update(rocker_port, attr->trans,
4353                                              ROCKER_OP_FLAG_NOWAIT,
4354                                              attr->u.stp_state);
4355                 break;
4356         case SWITCHDEV_ATTR_PORT_BRIDGE_FLAGS:
4357                 err = rocker_port_brport_flags_set(rocker_port, attr->trans,
4358                                                    attr->u.brport_flags);
4359                 break;
4360         default:
4361                 err = -EOPNOTSUPP;
4362                 break;
4363         }
4364
4365         return err;
4366 }
4367
4368 static int rocker_port_vlan_add(struct rocker_port *rocker_port,
4369                                 enum switchdev_trans trans, u16 vid, u16 flags)
4370 {
4371         int err;
4372
4373         /* XXX deal with flags for PVID and untagged */
4374
4375         err = rocker_port_vlan(rocker_port, trans, 0, vid);
4376         if (err)
4377                 return err;
4378
4379         err = rocker_port_router_mac(rocker_port, trans, 0, htons(vid));
4380         if (err)
4381                 rocker_port_vlan(rocker_port, trans,
4382                                  ROCKER_OP_FLAG_REMOVE, vid);
4383
4384         return err;
4385 }
4386
4387 static int rocker_port_vlans_add(struct rocker_port *rocker_port,
4388                                  enum switchdev_trans trans,
4389                                  const struct switchdev_obj_vlan *vlan)
4390 {
4391         u16 vid;
4392         int err;
4393
4394         for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) {
4395                 err = rocker_port_vlan_add(rocker_port, trans,
4396                                            vid, vlan->flags);
4397                 if (err)
4398                         return err;
4399         }
4400
4401         return 0;
4402 }
4403
4404 static int rocker_port_fdb_add(struct rocker_port *rocker_port,
4405                                enum switchdev_trans trans,
4406                                const struct switchdev_obj_fdb *fdb)
4407 {
4408         __be16 vlan_id = rocker_port_vid_to_vlan(rocker_port, fdb->vid, NULL);
4409         int flags = 0;
4410
4411         if (!rocker_port_is_bridged(rocker_port))
4412                 return -EINVAL;
4413
4414         return rocker_port_fdb(rocker_port, trans, fdb->addr, vlan_id, flags);
4415 }
4416
4417 static int rocker_port_obj_add(struct net_device *dev,
4418                                struct switchdev_obj *obj)
4419 {
4420         struct rocker_port *rocker_port = netdev_priv(dev);
4421         const struct switchdev_obj_ipv4_fib *fib4;
4422         int err = 0;
4423
4424         switch (obj->trans) {
4425         case SWITCHDEV_TRANS_PREPARE:
4426                 BUG_ON(!list_empty(&rocker_port->trans_mem));
4427                 break;
4428         case SWITCHDEV_TRANS_ABORT:
4429                 rocker_port_trans_abort(rocker_port);
4430                 return 0;
4431         default:
4432                 break;
4433         }
4434
4435         switch (obj->id) {
4436         case SWITCHDEV_OBJ_PORT_VLAN:
4437                 err = rocker_port_vlans_add(rocker_port, obj->trans,
4438                                             &obj->u.vlan);
4439                 break;
4440         case SWITCHDEV_OBJ_IPV4_FIB:
4441                 fib4 = &obj->u.ipv4_fib;
4442                 err = rocker_port_fib_ipv4(rocker_port, obj->trans,
4443                                            htonl(fib4->dst), fib4->dst_len,
4444                                            fib4->fi, fib4->tb_id, 0);
4445                 break;
4446         case SWITCHDEV_OBJ_PORT_FDB:
4447                 err = rocker_port_fdb_add(rocker_port, obj->trans, &obj->u.fdb);
4448                 break;
4449         default:
4450                 err = -EOPNOTSUPP;
4451                 break;
4452         }
4453
4454         return err;
4455 }
4456
4457 static int rocker_port_vlan_del(struct rocker_port *rocker_port,
4458                                 u16 vid, u16 flags)
4459 {
4460         int err;
4461
4462         err = rocker_port_router_mac(rocker_port, SWITCHDEV_TRANS_NONE,
4463                                      ROCKER_OP_FLAG_REMOVE, htons(vid));
4464         if (err)
4465                 return err;
4466
4467         return rocker_port_vlan(rocker_port, SWITCHDEV_TRANS_NONE,
4468                                 ROCKER_OP_FLAG_REMOVE, vid);
4469 }
4470
4471 static int rocker_port_vlans_del(struct rocker_port *rocker_port,
4472                                  const struct switchdev_obj_vlan *vlan)
4473 {
4474         u16 vid;
4475         int err;
4476
4477         for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) {
4478                 err = rocker_port_vlan_del(rocker_port, vid, vlan->flags);
4479                 if (err)
4480                         return err;
4481         }
4482
4483         return 0;
4484 }
4485
4486 static int rocker_port_fdb_del(struct rocker_port *rocker_port,
4487                                enum switchdev_trans trans,
4488                                const struct switchdev_obj_fdb *fdb)
4489 {
4490         __be16 vlan_id = rocker_port_vid_to_vlan(rocker_port, fdb->vid, NULL);
4491         int flags = ROCKER_OP_FLAG_NOWAIT | ROCKER_OP_FLAG_REMOVE;
4492
4493         if (!rocker_port_is_bridged(rocker_port))
4494                 return -EINVAL;
4495
4496         return rocker_port_fdb(rocker_port, trans, fdb->addr, vlan_id, flags);
4497 }
4498
4499 static int rocker_port_obj_del(struct net_device *dev,
4500                                struct switchdev_obj *obj)
4501 {
4502         struct rocker_port *rocker_port = netdev_priv(dev);
4503         const struct switchdev_obj_ipv4_fib *fib4;
4504         int err = 0;
4505
4506         switch (obj->id) {
4507         case SWITCHDEV_OBJ_PORT_VLAN:
4508                 err = rocker_port_vlans_del(rocker_port, &obj->u.vlan);
4509                 break;
4510         case SWITCHDEV_OBJ_IPV4_FIB:
4511                 fib4 = &obj->u.ipv4_fib;
4512                 err = rocker_port_fib_ipv4(rocker_port, SWITCHDEV_TRANS_NONE,
4513                                            htonl(fib4->dst), fib4->dst_len,
4514                                            fib4->fi, fib4->tb_id,
4515                                            ROCKER_OP_FLAG_REMOVE);
4516                 break;
4517         case SWITCHDEV_OBJ_PORT_FDB:
4518                 err = rocker_port_fdb_del(rocker_port, obj->trans, &obj->u.fdb);
4519                 break;
4520         default:
4521                 err = -EOPNOTSUPP;
4522                 break;
4523         }
4524
4525         return err;
4526 }
4527
4528 static int rocker_port_fdb_dump(const struct rocker_port *rocker_port,
4529                                 struct switchdev_obj *obj)
4530 {
4531         struct rocker *rocker = rocker_port->rocker;
4532         struct switchdev_obj_fdb *fdb = &obj->u.fdb;
4533         struct rocker_fdb_tbl_entry *found;
4534         struct hlist_node *tmp;
4535         unsigned long lock_flags;
4536         int bkt;
4537         int err = 0;
4538
4539         spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags);
4540         hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, found, entry) {
4541                 if (found->key.pport != rocker_port->pport)
4542                         continue;
4543                 fdb->addr = found->key.addr;
4544                 fdb->vid = rocker_port_vlan_to_vid(rocker_port,
4545                                                    found->key.vlan_id);
4546                 err = obj->cb(rocker_port->dev, obj);
4547                 if (err)
4548                         break;
4549         }
4550         spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags);
4551
4552         return err;
4553 }
4554
4555 static int rocker_port_vlan_dump(const struct rocker_port *rocker_port,
4556                                  struct switchdev_obj *obj)
4557 {
4558         struct switchdev_obj_vlan *vlan = &obj->u.vlan;
4559         u16 vid;
4560         int err = 0;
4561
4562         for (vid = 1; vid < VLAN_N_VID; vid++) {
4563                 if (!test_bit(vid, rocker_port->vlan_bitmap))
4564                         continue;
4565                 vlan->flags = 0;
4566                 if (rocker_vlan_id_is_internal(htons(vid)))
4567                         vlan->flags |= BRIDGE_VLAN_INFO_PVID;
4568                 vlan->vid_begin = vlan->vid_end = vid;
4569                 err = obj->cb(rocker_port->dev, obj);
4570                 if (err)
4571                         break;
4572         }
4573
4574         return err;
4575 }
4576
4577 static int rocker_port_obj_dump(struct net_device *dev,
4578                                 struct switchdev_obj *obj)
4579 {
4580         const struct rocker_port *rocker_port = netdev_priv(dev);
4581         int err = 0;
4582
4583         switch (obj->id) {
4584         case SWITCHDEV_OBJ_PORT_FDB:
4585                 err = rocker_port_fdb_dump(rocker_port, obj);
4586                 break;
4587         case SWITCHDEV_OBJ_PORT_VLAN:
4588                 err = rocker_port_vlan_dump(rocker_port, obj);
4589                 break;
4590         default:
4591                 err = -EOPNOTSUPP;
4592                 break;
4593         }
4594
4595         return err;
4596 }
4597
4598 static const struct switchdev_ops rocker_port_switchdev_ops = {
4599         .switchdev_port_attr_get        = rocker_port_attr_get,
4600         .switchdev_port_attr_set        = rocker_port_attr_set,
4601         .switchdev_port_obj_add         = rocker_port_obj_add,
4602         .switchdev_port_obj_del         = rocker_port_obj_del,
4603         .switchdev_port_obj_dump        = rocker_port_obj_dump,
4604 };
4605
4606 /********************
4607  * ethtool interface
4608  ********************/
4609
4610 static int rocker_port_get_settings(struct net_device *dev,
4611                                     struct ethtool_cmd *ecmd)
4612 {
4613         struct rocker_port *rocker_port = netdev_priv(dev);
4614
4615         return rocker_cmd_get_port_settings_ethtool(rocker_port, ecmd);
4616 }
4617
4618 static int rocker_port_set_settings(struct net_device *dev,
4619                                     struct ethtool_cmd *ecmd)
4620 {
4621         struct rocker_port *rocker_port = netdev_priv(dev);
4622
4623         return rocker_cmd_set_port_settings_ethtool(rocker_port, ecmd);
4624 }
4625
4626 static void rocker_port_get_drvinfo(struct net_device *dev,
4627                                     struct ethtool_drvinfo *drvinfo)
4628 {
4629         strlcpy(drvinfo->driver, rocker_driver_name, sizeof(drvinfo->driver));
4630         strlcpy(drvinfo->version, UTS_RELEASE, sizeof(drvinfo->version));
4631 }
4632
4633 static struct rocker_port_stats {
4634         char str[ETH_GSTRING_LEN];
4635         int type;
4636 } rocker_port_stats[] = {
4637         { "rx_packets", ROCKER_TLV_CMD_PORT_STATS_RX_PKTS,    },
4638         { "rx_bytes",   ROCKER_TLV_CMD_PORT_STATS_RX_BYTES,   },
4639         { "rx_dropped", ROCKER_TLV_CMD_PORT_STATS_RX_DROPPED, },
4640         { "rx_errors",  ROCKER_TLV_CMD_PORT_STATS_RX_ERRORS,  },
4641
4642         { "tx_packets", ROCKER_TLV_CMD_PORT_STATS_TX_PKTS,    },
4643         { "tx_bytes",   ROCKER_TLV_CMD_PORT_STATS_TX_BYTES,   },
4644         { "tx_dropped", ROCKER_TLV_CMD_PORT_STATS_TX_DROPPED, },
4645         { "tx_errors",  ROCKER_TLV_CMD_PORT_STATS_TX_ERRORS,  },
4646 };
4647
4648 #define ROCKER_PORT_STATS_LEN  ARRAY_SIZE(rocker_port_stats)
4649
4650 static void rocker_port_get_strings(struct net_device *netdev, u32 stringset,
4651                                     u8 *data)
4652 {
4653         u8 *p = data;
4654         int i;
4655
4656         switch (stringset) {
4657         case ETH_SS_STATS:
4658                 for (i = 0; i < ARRAY_SIZE(rocker_port_stats); i++) {
4659                         memcpy(p, rocker_port_stats[i].str, ETH_GSTRING_LEN);
4660                         p += ETH_GSTRING_LEN;
4661                 }
4662                 break;
4663         }
4664 }
4665
4666 static int
4667 rocker_cmd_get_port_stats_prep(const struct rocker_port *rocker_port,
4668                                struct rocker_desc_info *desc_info,
4669                                void *priv)
4670 {
4671         struct rocker_tlv *cmd_stats;
4672
4673         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
4674                                ROCKER_TLV_CMD_TYPE_GET_PORT_STATS))
4675                 return -EMSGSIZE;
4676
4677         cmd_stats = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
4678         if (!cmd_stats)
4679                 return -EMSGSIZE;
4680
4681         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_STATS_PPORT,
4682                                rocker_port->pport))
4683                 return -EMSGSIZE;
4684
4685         rocker_tlv_nest_end(desc_info, cmd_stats);
4686
4687         return 0;
4688 }
4689
4690 static int
4691 rocker_cmd_get_port_stats_ethtool_proc(const struct rocker_port *rocker_port,
4692                                        const struct rocker_desc_info *desc_info,
4693                                        void *priv)
4694 {
4695         const struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
4696         const struct rocker_tlv *stats_attrs[ROCKER_TLV_CMD_PORT_STATS_MAX + 1];
4697         const struct rocker_tlv *pattr;
4698         u32 pport;
4699         u64 *data = priv;
4700         int i;
4701
4702         rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
4703
4704         if (!attrs[ROCKER_TLV_CMD_INFO])
4705                 return -EIO;
4706
4707         rocker_tlv_parse_nested(stats_attrs, ROCKER_TLV_CMD_PORT_STATS_MAX,
4708                                 attrs[ROCKER_TLV_CMD_INFO]);
4709
4710         if (!stats_attrs[ROCKER_TLV_CMD_PORT_STATS_PPORT])
4711                 return -EIO;
4712
4713         pport = rocker_tlv_get_u32(stats_attrs[ROCKER_TLV_CMD_PORT_STATS_PPORT]);
4714         if (pport != rocker_port->pport)
4715                 return -EIO;
4716
4717         for (i = 0; i < ARRAY_SIZE(rocker_port_stats); i++) {
4718                 pattr = stats_attrs[rocker_port_stats[i].type];
4719                 if (!pattr)
4720                         continue;
4721
4722                 data[i] = rocker_tlv_get_u64(pattr);
4723         }
4724
4725         return 0;
4726 }
4727
4728 static int rocker_cmd_get_port_stats_ethtool(struct rocker_port *rocker_port,
4729                                              void *priv)
4730 {
4731         return rocker_cmd_exec(rocker_port, SWITCHDEV_TRANS_NONE, 0,
4732                                rocker_cmd_get_port_stats_prep, NULL,
4733                                rocker_cmd_get_port_stats_ethtool_proc,
4734                                priv);
4735 }
4736
4737 static void rocker_port_get_stats(struct net_device *dev,
4738                                   struct ethtool_stats *stats, u64 *data)
4739 {
4740         struct rocker_port *rocker_port = netdev_priv(dev);
4741
4742         if (rocker_cmd_get_port_stats_ethtool(rocker_port, data) != 0) {
4743                 int i;
4744
4745                 for (i = 0; i < ARRAY_SIZE(rocker_port_stats); ++i)
4746                         data[i] = 0;
4747         }
4748 }
4749
4750 static int rocker_port_get_sset_count(struct net_device *netdev, int sset)
4751 {
4752         switch (sset) {
4753         case ETH_SS_STATS:
4754                 return ROCKER_PORT_STATS_LEN;
4755         default:
4756                 return -EOPNOTSUPP;
4757         }
4758 }
4759
4760 static const struct ethtool_ops rocker_port_ethtool_ops = {
4761         .get_settings           = rocker_port_get_settings,
4762         .set_settings           = rocker_port_set_settings,
4763         .get_drvinfo            = rocker_port_get_drvinfo,
4764         .get_link               = ethtool_op_get_link,
4765         .get_strings            = rocker_port_get_strings,
4766         .get_ethtool_stats      = rocker_port_get_stats,
4767         .get_sset_count         = rocker_port_get_sset_count,
4768 };
4769
4770 /*****************
4771  * NAPI interface
4772  *****************/
4773
4774 static struct rocker_port *rocker_port_napi_tx_get(struct napi_struct *napi)
4775 {
4776         return container_of(napi, struct rocker_port, napi_tx);
4777 }
4778
4779 static int rocker_port_poll_tx(struct napi_struct *napi, int budget)
4780 {
4781         struct rocker_port *rocker_port = rocker_port_napi_tx_get(napi);
4782         const struct rocker *rocker = rocker_port->rocker;
4783         const struct rocker_desc_info *desc_info;
4784         u32 credits = 0;
4785         int err;
4786
4787         /* Cleanup tx descriptors */
4788         while ((desc_info = rocker_desc_tail_get(&rocker_port->tx_ring))) {
4789                 struct sk_buff *skb;
4790
4791                 err = rocker_desc_err(desc_info);
4792                 if (err && net_ratelimit())
4793                         netdev_err(rocker_port->dev, "tx desc received with err %d\n",
4794                                    err);
4795                 rocker_tx_desc_frags_unmap(rocker_port, desc_info);
4796
4797                 skb = rocker_desc_cookie_ptr_get(desc_info);
4798                 if (err == 0) {
4799                         rocker_port->dev->stats.tx_packets++;
4800                         rocker_port->dev->stats.tx_bytes += skb->len;
4801                 } else {
4802                         rocker_port->dev->stats.tx_errors++;
4803                 }
4804
4805                 dev_kfree_skb_any(skb);
4806                 credits++;
4807         }
4808
4809         if (credits && netif_queue_stopped(rocker_port->dev))
4810                 netif_wake_queue(rocker_port->dev);
4811
4812         napi_complete(napi);
4813         rocker_dma_ring_credits_set(rocker, &rocker_port->tx_ring, credits);
4814
4815         return 0;
4816 }
4817
4818 static int rocker_port_rx_proc(const struct rocker *rocker,
4819                                const struct rocker_port *rocker_port,
4820                                struct rocker_desc_info *desc_info)
4821 {
4822         const struct rocker_tlv *attrs[ROCKER_TLV_RX_MAX + 1];
4823         struct sk_buff *skb = rocker_desc_cookie_ptr_get(desc_info);
4824         size_t rx_len;
4825
4826         if (!skb)
4827                 return -ENOENT;
4828
4829         rocker_tlv_parse_desc(attrs, ROCKER_TLV_RX_MAX, desc_info);
4830         if (!attrs[ROCKER_TLV_RX_FRAG_LEN])
4831                 return -EINVAL;
4832
4833         rocker_dma_rx_ring_skb_unmap(rocker, attrs);
4834
4835         rx_len = rocker_tlv_get_u16(attrs[ROCKER_TLV_RX_FRAG_LEN]);
4836         skb_put(skb, rx_len);
4837         skb->protocol = eth_type_trans(skb, rocker_port->dev);
4838
4839         rocker_port->dev->stats.rx_packets++;
4840         rocker_port->dev->stats.rx_bytes += skb->len;
4841
4842         netif_receive_skb(skb);
4843
4844         return rocker_dma_rx_ring_skb_alloc(rocker_port, desc_info);
4845 }
4846
4847 static struct rocker_port *rocker_port_napi_rx_get(struct napi_struct *napi)
4848 {
4849         return container_of(napi, struct rocker_port, napi_rx);
4850 }
4851
4852 static int rocker_port_poll_rx(struct napi_struct *napi, int budget)
4853 {
4854         struct rocker_port *rocker_port = rocker_port_napi_rx_get(napi);
4855         const struct rocker *rocker = rocker_port->rocker;
4856         struct rocker_desc_info *desc_info;
4857         u32 credits = 0;
4858         int err;
4859
4860         /* Process rx descriptors */
4861         while (credits < budget &&
4862                (desc_info = rocker_desc_tail_get(&rocker_port->rx_ring))) {
4863                 err = rocker_desc_err(desc_info);
4864                 if (err) {
4865                         if (net_ratelimit())
4866                                 netdev_err(rocker_port->dev, "rx desc received with err %d\n",
4867                                            err);
4868                 } else {
4869                         err = rocker_port_rx_proc(rocker, rocker_port,
4870                                                   desc_info);
4871                         if (err && net_ratelimit())
4872                                 netdev_err(rocker_port->dev, "rx processing failed with err %d\n",
4873                                            err);
4874                 }
4875                 if (err)
4876                         rocker_port->dev->stats.rx_errors++;
4877
4878                 rocker_desc_gen_clear(desc_info);
4879                 rocker_desc_head_set(rocker, &rocker_port->rx_ring, desc_info);
4880                 credits++;
4881         }
4882
4883         if (credits < budget)
4884                 napi_complete(napi);
4885
4886         rocker_dma_ring_credits_set(rocker, &rocker_port->rx_ring, credits);
4887
4888         return credits;
4889 }
4890
4891 /*****************
4892  * PCI driver ops
4893  *****************/
4894
4895 static void rocker_carrier_init(const struct rocker_port *rocker_port)
4896 {
4897         const struct rocker *rocker = rocker_port->rocker;
4898         u64 link_status = rocker_read64(rocker, PORT_PHYS_LINK_STATUS);
4899         bool link_up;
4900
4901         link_up = link_status & (1 << rocker_port->pport);
4902         if (link_up)
4903                 netif_carrier_on(rocker_port->dev);
4904         else
4905                 netif_carrier_off(rocker_port->dev);
4906 }
4907
4908 static void rocker_remove_ports(const struct rocker *rocker)
4909 {
4910         struct rocker_port *rocker_port;
4911         int i;
4912
4913         for (i = 0; i < rocker->port_count; i++) {
4914                 rocker_port = rocker->ports[i];
4915                 if (!rocker_port)
4916                         continue;
4917                 rocker_port_ig_tbl(rocker_port, SWITCHDEV_TRANS_NONE,
4918                                    ROCKER_OP_FLAG_REMOVE);
4919                 unregister_netdev(rocker_port->dev);
4920         }
4921         kfree(rocker->ports);
4922 }
4923
4924 static void rocker_port_dev_addr_init(struct rocker_port *rocker_port)
4925 {
4926         const struct rocker *rocker = rocker_port->rocker;
4927         const struct pci_dev *pdev = rocker->pdev;
4928         int err;
4929
4930         err = rocker_cmd_get_port_settings_macaddr(rocker_port,
4931                                                    rocker_port->dev->dev_addr);
4932         if (err) {
4933                 dev_warn(&pdev->dev, "failed to get mac address, using random\n");
4934                 eth_hw_addr_random(rocker_port->dev);
4935         }
4936 }
4937
4938 static int rocker_probe_port(struct rocker *rocker, unsigned int port_number)
4939 {
4940         const struct pci_dev *pdev = rocker->pdev;
4941         struct rocker_port *rocker_port;
4942         struct net_device *dev;
4943         u16 untagged_vid = 0;
4944         int err;
4945
4946         dev = alloc_etherdev(sizeof(struct rocker_port));
4947         if (!dev)
4948                 return -ENOMEM;
4949         rocker_port = netdev_priv(dev);
4950         rocker_port->dev = dev;
4951         rocker_port->rocker = rocker;
4952         rocker_port->port_number = port_number;
4953         rocker_port->pport = port_number + 1;
4954         rocker_port->brport_flags = BR_LEARNING | BR_LEARNING_SYNC;
4955         INIT_LIST_HEAD(&rocker_port->trans_mem);
4956
4957         rocker_port_dev_addr_init(rocker_port);
4958         dev->netdev_ops = &rocker_port_netdev_ops;
4959         dev->ethtool_ops = &rocker_port_ethtool_ops;
4960         dev->switchdev_ops = &rocker_port_switchdev_ops;
4961         netif_napi_add(dev, &rocker_port->napi_tx, rocker_port_poll_tx,
4962                        NAPI_POLL_WEIGHT);
4963         netif_napi_add(dev, &rocker_port->napi_rx, rocker_port_poll_rx,
4964                        NAPI_POLL_WEIGHT);
4965         rocker_carrier_init(rocker_port);
4966
4967         dev->features |= NETIF_F_NETNS_LOCAL;
4968
4969         err = register_netdev(dev);
4970         if (err) {
4971                 dev_err(&pdev->dev, "register_netdev failed\n");
4972                 goto err_register_netdev;
4973         }
4974         rocker->ports[port_number] = rocker_port;
4975
4976         rocker_port_set_learning(rocker_port, SWITCHDEV_TRANS_NONE);
4977
4978         err = rocker_port_ig_tbl(rocker_port, SWITCHDEV_TRANS_NONE, 0);
4979         if (err) {
4980                 dev_err(&pdev->dev, "install ig port table failed\n");
4981                 goto err_port_ig_tbl;
4982         }
4983
4984         rocker_port->internal_vlan_id =
4985                 rocker_port_internal_vlan_id_get(rocker_port, dev->ifindex);
4986
4987         err = rocker_port_vlan_add(rocker_port, SWITCHDEV_TRANS_NONE,
4988                                    untagged_vid, 0);
4989         if (err) {
4990                 netdev_err(rocker_port->dev, "install untagged VLAN failed\n");
4991                 goto err_untagged_vlan;
4992         }
4993
4994         return 0;
4995
4996 err_untagged_vlan:
4997         rocker_port_ig_tbl(rocker_port, SWITCHDEV_TRANS_NONE,
4998                            ROCKER_OP_FLAG_REMOVE);
4999 err_port_ig_tbl:
5000         unregister_netdev(dev);
5001 err_register_netdev:
5002         free_netdev(dev);
5003         return err;
5004 }
5005
5006 static int rocker_probe_ports(struct rocker *rocker)
5007 {
5008         int i;
5009         size_t alloc_size;
5010         int err;
5011
5012         alloc_size = sizeof(struct rocker_port *) * rocker->port_count;
5013         rocker->ports = kzalloc(alloc_size, GFP_KERNEL);
5014         if (!rocker->ports)
5015                 return -ENOMEM;
5016         for (i = 0; i < rocker->port_count; i++) {
5017                 err = rocker_probe_port(rocker, i);
5018                 if (err)
5019                         goto remove_ports;
5020         }
5021         return 0;
5022
5023 remove_ports:
5024         rocker_remove_ports(rocker);
5025         return err;
5026 }
5027
5028 static int rocker_msix_init(struct rocker *rocker)
5029 {
5030         struct pci_dev *pdev = rocker->pdev;
5031         int msix_entries;
5032         int i;
5033         int err;
5034
5035         msix_entries = pci_msix_vec_count(pdev);
5036         if (msix_entries < 0)
5037                 return msix_entries;
5038
5039         if (msix_entries != ROCKER_MSIX_VEC_COUNT(rocker->port_count))
5040                 return -EINVAL;
5041
5042         rocker->msix_entries = kmalloc_array(msix_entries,
5043                                              sizeof(struct msix_entry),
5044                                              GFP_KERNEL);
5045         if (!rocker->msix_entries)
5046                 return -ENOMEM;
5047
5048         for (i = 0; i < msix_entries; i++)
5049                 rocker->msix_entries[i].entry = i;
5050
5051         err = pci_enable_msix_exact(pdev, rocker->msix_entries, msix_entries);
5052         if (err < 0)
5053                 goto err_enable_msix;
5054
5055         return 0;
5056
5057 err_enable_msix:
5058         kfree(rocker->msix_entries);
5059         return err;
5060 }
5061
5062 static void rocker_msix_fini(const struct rocker *rocker)
5063 {
5064         pci_disable_msix(rocker->pdev);
5065         kfree(rocker->msix_entries);
5066 }
5067
5068 static int rocker_probe(struct pci_dev *pdev, const struct pci_device_id *id)
5069 {
5070         struct rocker *rocker;
5071         int err;
5072
5073         rocker = kzalloc(sizeof(*rocker), GFP_KERNEL);
5074         if (!rocker)
5075                 return -ENOMEM;
5076
5077         err = pci_enable_device(pdev);
5078         if (err) {
5079                 dev_err(&pdev->dev, "pci_enable_device failed\n");
5080                 goto err_pci_enable_device;
5081         }
5082
5083         err = pci_request_regions(pdev, rocker_driver_name);
5084         if (err) {
5085                 dev_err(&pdev->dev, "pci_request_regions failed\n");
5086                 goto err_pci_request_regions;
5087         }
5088
5089         err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
5090         if (!err) {
5091                 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
5092                 if (err) {
5093                         dev_err(&pdev->dev, "pci_set_consistent_dma_mask failed\n");
5094                         goto err_pci_set_dma_mask;
5095                 }
5096         } else {
5097                 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
5098                 if (err) {
5099                         dev_err(&pdev->dev, "pci_set_dma_mask failed\n");
5100                         goto err_pci_set_dma_mask;
5101                 }
5102         }
5103
5104         if (pci_resource_len(pdev, 0) < ROCKER_PCI_BAR0_SIZE) {
5105                 dev_err(&pdev->dev, "invalid PCI region size\n");
5106                 err = -EINVAL;
5107                 goto err_pci_resource_len_check;
5108         }
5109
5110         rocker->hw_addr = ioremap(pci_resource_start(pdev, 0),
5111                                   pci_resource_len(pdev, 0));
5112         if (!rocker->hw_addr) {
5113                 dev_err(&pdev->dev, "ioremap failed\n");
5114                 err = -EIO;
5115                 goto err_ioremap;
5116         }
5117         pci_set_master(pdev);
5118
5119         rocker->pdev = pdev;
5120         pci_set_drvdata(pdev, rocker);
5121
5122         rocker->port_count = rocker_read32(rocker, PORT_PHYS_COUNT);
5123
5124         err = rocker_msix_init(rocker);
5125         if (err) {
5126                 dev_err(&pdev->dev, "MSI-X init failed\n");
5127                 goto err_msix_init;
5128         }
5129
5130         err = rocker_basic_hw_test(rocker);
5131         if (err) {
5132                 dev_err(&pdev->dev, "basic hw test failed\n");
5133                 goto err_basic_hw_test;
5134         }
5135
5136         rocker_write32(rocker, CONTROL, ROCKER_CONTROL_RESET);
5137
5138         err = rocker_dma_rings_init(rocker);
5139         if (err)
5140                 goto err_dma_rings_init;
5141
5142         err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD),
5143                           rocker_cmd_irq_handler, 0,
5144                           rocker_driver_name, rocker);
5145         if (err) {
5146                 dev_err(&pdev->dev, "cannot assign cmd irq\n");
5147                 goto err_request_cmd_irq;
5148         }
5149
5150         err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT),
5151                           rocker_event_irq_handler, 0,
5152                           rocker_driver_name, rocker);
5153         if (err) {
5154                 dev_err(&pdev->dev, "cannot assign event irq\n");
5155                 goto err_request_event_irq;
5156         }
5157
5158         rocker->hw.id = rocker_read64(rocker, SWITCH_ID);
5159
5160         err = rocker_init_tbls(rocker);
5161         if (err) {
5162                 dev_err(&pdev->dev, "cannot init rocker tables\n");
5163                 goto err_init_tbls;
5164         }
5165
5166         err = rocker_probe_ports(rocker);
5167         if (err) {
5168                 dev_err(&pdev->dev, "failed to probe ports\n");
5169                 goto err_probe_ports;
5170         }
5171
5172         dev_info(&pdev->dev, "Rocker switch with id %016llx\n", rocker->hw.id);
5173
5174         return 0;
5175
5176 err_probe_ports:
5177         rocker_free_tbls(rocker);
5178 err_init_tbls:
5179         free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT), rocker);
5180 err_request_event_irq:
5181         free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD), rocker);
5182 err_request_cmd_irq:
5183         rocker_dma_rings_fini(rocker);
5184 err_dma_rings_init:
5185 err_basic_hw_test:
5186         rocker_msix_fini(rocker);
5187 err_msix_init:
5188         iounmap(rocker->hw_addr);
5189 err_ioremap:
5190 err_pci_resource_len_check:
5191 err_pci_set_dma_mask:
5192         pci_release_regions(pdev);
5193 err_pci_request_regions:
5194         pci_disable_device(pdev);
5195 err_pci_enable_device:
5196         kfree(rocker);
5197         return err;
5198 }
5199
5200 static void rocker_remove(struct pci_dev *pdev)
5201 {
5202         struct rocker *rocker = pci_get_drvdata(pdev);
5203
5204         rocker_free_tbls(rocker);
5205         rocker_write32(rocker, CONTROL, ROCKER_CONTROL_RESET);
5206         rocker_remove_ports(rocker);
5207         free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT), rocker);
5208         free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD), rocker);
5209         rocker_dma_rings_fini(rocker);
5210         rocker_msix_fini(rocker);
5211         iounmap(rocker->hw_addr);
5212         pci_release_regions(rocker->pdev);
5213         pci_disable_device(rocker->pdev);
5214         kfree(rocker);
5215 }
5216
5217 static struct pci_driver rocker_pci_driver = {
5218         .name           = rocker_driver_name,
5219         .id_table       = rocker_pci_id_table,
5220         .probe          = rocker_probe,
5221         .remove         = rocker_remove,
5222 };
5223
5224 /************************************
5225  * Net device notifier event handler
5226  ************************************/
5227
5228 static bool rocker_port_dev_check(const struct net_device *dev)
5229 {
5230         return dev->netdev_ops == &rocker_port_netdev_ops;
5231 }
5232
5233 static int rocker_port_bridge_join(struct rocker_port *rocker_port,
5234                                    struct net_device *bridge)
5235 {
5236         u16 untagged_vid = 0;
5237         int err;
5238
5239         /* Port is joining bridge, so the internal VLAN for the
5240          * port is going to change to the bridge internal VLAN.
5241          * Let's remove untagged VLAN (vid=0) from port and
5242          * re-add once internal VLAN has changed.
5243          */
5244
5245         err = rocker_port_vlan_del(rocker_port, untagged_vid, 0);
5246         if (err)
5247                 return err;
5248
5249         rocker_port_internal_vlan_id_put(rocker_port,
5250                                          rocker_port->dev->ifindex);
5251         rocker_port->internal_vlan_id =
5252                 rocker_port_internal_vlan_id_get(rocker_port, bridge->ifindex);
5253
5254         rocker_port->bridge_dev = bridge;
5255
5256         return rocker_port_vlan_add(rocker_port, SWITCHDEV_TRANS_NONE,
5257                                     untagged_vid, 0);
5258 }
5259
5260 static int rocker_port_bridge_leave(struct rocker_port *rocker_port)
5261 {
5262         u16 untagged_vid = 0;
5263         int err;
5264
5265         err = rocker_port_vlan_del(rocker_port, untagged_vid, 0);
5266         if (err)
5267                 return err;
5268
5269         rocker_port_internal_vlan_id_put(rocker_port,
5270                                          rocker_port->bridge_dev->ifindex);
5271         rocker_port->internal_vlan_id =
5272                 rocker_port_internal_vlan_id_get(rocker_port,
5273                                                  rocker_port->dev->ifindex);
5274
5275         rocker_port->bridge_dev = NULL;
5276
5277         err = rocker_port_vlan_add(rocker_port, SWITCHDEV_TRANS_NONE,
5278                                    untagged_vid, 0);
5279         if (err)
5280                 return err;
5281
5282         if (rocker_port->dev->flags & IFF_UP)
5283                 err = rocker_port_fwd_enable(rocker_port,
5284                                              SWITCHDEV_TRANS_NONE, 0);
5285
5286         return err;
5287 }
5288
5289
5290 static int rocker_port_ovs_changed(struct rocker_port *rocker_port,
5291                                    struct net_device *master)
5292 {
5293         int err;
5294
5295         rocker_port->bridge_dev = master;
5296
5297         err = rocker_port_fwd_disable(rocker_port, SWITCHDEV_TRANS_NONE, 0);
5298         if (err)
5299                 return err;
5300         err = rocker_port_fwd_enable(rocker_port, SWITCHDEV_TRANS_NONE, 0);
5301
5302         return err;
5303 }
5304
5305 static int rocker_port_master_changed(struct net_device *dev)
5306 {
5307         struct rocker_port *rocker_port = netdev_priv(dev);
5308         struct net_device *master = netdev_master_upper_dev_get(dev);
5309         int err = 0;
5310
5311         /* N.B: Do nothing if the type of master is not supported */
5312         if (master && master->rtnl_link_ops) {
5313                 if (!strcmp(master->rtnl_link_ops->kind, "bridge"))
5314                         err = rocker_port_bridge_join(rocker_port, master);
5315                 else if (!strcmp(master->rtnl_link_ops->kind, "openvswitch"))
5316                         err = rocker_port_ovs_changed(rocker_port, master);
5317         } else if (rocker_port_is_bridged(rocker_port)) {
5318                 err = rocker_port_bridge_leave(rocker_port);
5319         } else if (rocker_port_is_ovsed(rocker_port)) {
5320                 err = rocker_port_ovs_changed(rocker_port, NULL);
5321         }
5322
5323         return err;
5324 }
5325
5326 static int rocker_netdevice_event(struct notifier_block *unused,
5327                                   unsigned long event, void *ptr)
5328 {
5329         struct net_device *dev;
5330         int err;
5331
5332         switch (event) {
5333         case NETDEV_CHANGEUPPER:
5334                 dev = netdev_notifier_info_to_dev(ptr);
5335                 if (!rocker_port_dev_check(dev))
5336                         return NOTIFY_DONE;
5337                 err = rocker_port_master_changed(dev);
5338                 if (err)
5339                         netdev_warn(dev,
5340                                     "failed to reflect master change (err %d)\n",
5341                                     err);
5342                 break;
5343         }
5344
5345         return NOTIFY_DONE;
5346 }
5347
5348 static struct notifier_block rocker_netdevice_nb __read_mostly = {
5349         .notifier_call = rocker_netdevice_event,
5350 };
5351
5352 /************************************
5353  * Net event notifier event handler
5354  ************************************/
5355
5356 static int rocker_neigh_update(struct net_device *dev, struct neighbour *n)
5357 {
5358         struct rocker_port *rocker_port = netdev_priv(dev);
5359         int flags = (n->nud_state & NUD_VALID ? 0 : ROCKER_OP_FLAG_REMOVE) |
5360                     ROCKER_OP_FLAG_NOWAIT;
5361         __be32 ip_addr = *(__be32 *)n->primary_key;
5362
5363         return rocker_port_ipv4_neigh(rocker_port, SWITCHDEV_TRANS_NONE,
5364                                       flags, ip_addr, n->ha);
5365 }
5366
5367 static int rocker_netevent_event(struct notifier_block *unused,
5368                                  unsigned long event, void *ptr)
5369 {
5370         struct net_device *dev;
5371         struct neighbour *n = ptr;
5372         int err;
5373
5374         switch (event) {
5375         case NETEVENT_NEIGH_UPDATE:
5376                 if (n->tbl != &arp_tbl)
5377                         return NOTIFY_DONE;
5378                 dev = n->dev;
5379                 if (!rocker_port_dev_check(dev))
5380                         return NOTIFY_DONE;
5381                 err = rocker_neigh_update(dev, n);
5382                 if (err)
5383                         netdev_warn(dev,
5384                                     "failed to handle neigh update (err %d)\n",
5385                                     err);
5386                 break;
5387         }
5388
5389         return NOTIFY_DONE;
5390 }
5391
5392 static struct notifier_block rocker_netevent_nb __read_mostly = {
5393         .notifier_call = rocker_netevent_event,
5394 };
5395
5396 /***********************
5397  * Module init and exit
5398  ***********************/
5399
5400 static int __init rocker_module_init(void)
5401 {
5402         int err;
5403
5404         register_netdevice_notifier(&rocker_netdevice_nb);
5405         register_netevent_notifier(&rocker_netevent_nb);
5406         err = pci_register_driver(&rocker_pci_driver);
5407         if (err)
5408                 goto err_pci_register_driver;
5409         return 0;
5410
5411 err_pci_register_driver:
5412         unregister_netevent_notifier(&rocker_netevent_nb);
5413         unregister_netdevice_notifier(&rocker_netdevice_nb);
5414         return err;
5415 }
5416
5417 static void __exit rocker_module_exit(void)
5418 {
5419         unregister_netevent_notifier(&rocker_netevent_nb);
5420         unregister_netdevice_notifier(&rocker_netdevice_nb);
5421         pci_unregister_driver(&rocker_pci_driver);
5422 }
5423
5424 module_init(rocker_module_init);
5425 module_exit(rocker_module_exit);
5426
5427 MODULE_LICENSE("GPL v2");
5428 MODULE_AUTHOR("Jiri Pirko <jiri@resnulli.us>");
5429 MODULE_AUTHOR("Scott Feldman <sfeldma@gmail.com>");
5430 MODULE_DESCRIPTION("Rocker switch device driver");
5431 MODULE_DEVICE_TABLE(pci, rocker_pci_id_table);