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