drivers/net/ixgbe/ixgbe_dcb_nl.c

   1 /*******************************************************************************
   2
   3   Intel 10 Gigabit PCI Express Linux driver
   4   Copyright(c) 1999 - 2010 Intel Corporation.
   5
   6   This program is free software; you can redistribute it and/or modify it
   7   under the terms and conditions of the GNU General Public License,
   8   version 2, as published by the Free Software Foundation.
   9
  10   This program is distributed in the hope it will be useful, but WITHOUT
  11   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12   FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13   more details.
  14
  15   You should have received a copy of the GNU General Public License along with
  16   this program; if not, write to the Free Software Foundation, Inc.,
  17   51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
  18
  19   The full GNU General Public License is included in this distribution in
  20   the file called "COPYING".
  21
  22   Contact Information:
  23   Linux NICS <linux.nics@intel.com>
  24   e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
  25   Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  26
  27 *******************************************************************************/
  28
  29 #include "ixgbe.h"
  30 #include <linux/dcbnl.h>
  31 #include "ixgbe_dcb_82598.h"
  32 #include "ixgbe_dcb_82599.h"
  33
  34 /* Callbacks for DCB netlink in the kernel */
  35 #define BIT_DCB_MODE    0x01
  36 #define BIT_PFC         0x02
  37 #define BIT_PG_RX       0x04
  38 #define BIT_PG_TX       0x08
  39 #define BIT_APP_UPCHG   0x10
  40 #define BIT_LINKSPEED   0x80
  41
  42 /* Responses for the DCB_C_SET_ALL command */
  43 #define DCB_HW_CHG_RST  0  /* DCB configuration changed with reset */
  44 #define DCB_NO_HW_CHG   1  /* DCB configuration did not change */
  45 #define DCB_HW_CHG      2  /* DCB configuration changed, no reset */
  46
  47 int ixgbe_copy_dcb_cfg(struct ixgbe_dcb_config *src_dcb_cfg,
  48                        struct ixgbe_dcb_config *dst_dcb_cfg, int tc_max)
  49 {
  50         struct tc_configuration *src_tc_cfg = NULL;
  51         struct tc_configuration *dst_tc_cfg = NULL;
  52         int i;
  53
  54         if (!src_dcb_cfg || !dst_dcb_cfg)
  55                 return -EINVAL;
  56
  57         for (i = DCB_PG_ATTR_TC_0; i < tc_max + DCB_PG_ATTR_TC_0; i++) {
  58                 src_tc_cfg = &src_dcb_cfg->tc_config[i - DCB_PG_ATTR_TC_0];
  59                 dst_tc_cfg = &dst_dcb_cfg->tc_config[i - DCB_PG_ATTR_TC_0];
  60
  61                 dst_tc_cfg->path[DCB_TX_CONFIG].prio_type =
  62                                 src_tc_cfg->path[DCB_TX_CONFIG].prio_type;
  63
  64                 dst_tc_cfg->path[DCB_TX_CONFIG].bwg_id =
  65                                 src_tc_cfg->path[DCB_TX_CONFIG].bwg_id;
  66
  67                 dst_tc_cfg->path[DCB_TX_CONFIG].bwg_percent =
  68                                 src_tc_cfg->path[DCB_TX_CONFIG].bwg_percent;
  69
  70                 dst_tc_cfg->path[DCB_TX_CONFIG].up_to_tc_bitmap =
  71                                 src_tc_cfg->path[DCB_TX_CONFIG].up_to_tc_bitmap;
  72
  73                 dst_tc_cfg->path[DCB_RX_CONFIG].prio_type =
  74                                 src_tc_cfg->path[DCB_RX_CONFIG].prio_type;
  75
  76                 dst_tc_cfg->path[DCB_RX_CONFIG].bwg_id =
  77                                 src_tc_cfg->path[DCB_RX_CONFIG].bwg_id;
  78
  79                 dst_tc_cfg->path[DCB_RX_CONFIG].bwg_percent =
  80                                 src_tc_cfg->path[DCB_RX_CONFIG].bwg_percent;
  81
  82                 dst_tc_cfg->path[DCB_RX_CONFIG].up_to_tc_bitmap =
  83                                 src_tc_cfg->path[DCB_RX_CONFIG].up_to_tc_bitmap;
  84         }
  85
  86         for (i = DCB_PG_ATTR_BW_ID_0; i < DCB_PG_ATTR_BW_ID_MAX; i++) {
  87                 dst_dcb_cfg->bw_percentage[DCB_TX_CONFIG]
  88                         [i-DCB_PG_ATTR_BW_ID_0] = src_dcb_cfg->bw_percentage
  89                                 [DCB_TX_CONFIG][i-DCB_PG_ATTR_BW_ID_0];
  90                 dst_dcb_cfg->bw_percentage[DCB_RX_CONFIG]
  91                         [i-DCB_PG_ATTR_BW_ID_0] = src_dcb_cfg->bw_percentage
  92                                 [DCB_RX_CONFIG][i-DCB_PG_ATTR_BW_ID_0];
  93         }
  94
  95         for (i = DCB_PFC_UP_ATTR_0; i < DCB_PFC_UP_ATTR_MAX; i++) {
  96                 dst_dcb_cfg->tc_config[i - DCB_PFC_UP_ATTR_0].dcb_pfc =
  97                         src_dcb_cfg->tc_config[i - DCB_PFC_UP_ATTR_0].dcb_pfc;
  98         }
  99
 100         dst_dcb_cfg->pfc_mode_enable = src_dcb_cfg->pfc_mode_enable;
 101
 102         return 0;
 103 }
 104
 105 static u8 ixgbe_dcbnl_get_state(struct net_device *netdev)
 106 {
 107         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 108
 109         return !!(adapter->flags & IXGBE_FLAG_DCB_ENABLED);
 110 }
 111
 112 static u8 ixgbe_dcbnl_set_state(struct net_device *netdev, u8 state)
 113 {
 114         u8 err = 0;
 115         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 116
 117         if (state > 0) {
 118                 /* Turn on DCB */
 119                 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED)
 120                         goto out;
 121
 122                 if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED)) {
 123                         e_err(drv, "Enable failed, needs MSI-X\n");
 124                         err = 1;
 125                         goto out;
 126                 }
 127
 128                 if (netif_running(netdev))
 129                         netdev->netdev_ops->ndo_stop(netdev);
 130                 ixgbe_clear_interrupt_scheme(adapter);
 131
 132                 adapter->flags &= ~IXGBE_FLAG_RSS_ENABLED;
 133                 switch (adapter->hw.mac.type) {
 134                 case ixgbe_mac_82598EB:
 135                         adapter->last_lfc_mode = adapter->hw.fc.current_mode;
 136                         adapter->hw.fc.requested_mode = ixgbe_fc_none;
 137                         break;
 138                 case ixgbe_mac_82599EB:
 139                 case ixgbe_mac_X540:
 140                         adapter->flags &= ~IXGBE_FLAG_FDIR_HASH_CAPABLE;
 141                         adapter->flags &= ~IXGBE_FLAG_FDIR_PERFECT_CAPABLE;
 142                         break;
 143                 default:
 144                         break;
 145                 }
 146
 147                 adapter->flags |= IXGBE_FLAG_DCB_ENABLED;
 148                 ixgbe_init_interrupt_scheme(adapter);
 149                 if (netif_running(netdev))
 150                         netdev->netdev_ops->ndo_open(netdev);
 151         } else {
 152                 /* Turn off DCB */
 153                 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
 154                         if (netif_running(netdev))
 155                                 netdev->netdev_ops->ndo_stop(netdev);
 156                         ixgbe_clear_interrupt_scheme(adapter);
 157
 158                         adapter->hw.fc.requested_mode = adapter->last_lfc_mode;
 159                         adapter->temp_dcb_cfg.pfc_mode_enable = false;
 160                         adapter->dcb_cfg.pfc_mode_enable = false;
 161                         adapter->flags &= ~IXGBE_FLAG_DCB_ENABLED;
 162                         adapter->flags |= IXGBE_FLAG_RSS_ENABLED;
 163                         switch (adapter->hw.mac.type) {
 164                         case ixgbe_mac_82599EB:
 165                         case ixgbe_mac_X540:
 166                                 adapter->flags |= IXGBE_FLAG_FDIR_HASH_CAPABLE;
 167                                 break;
 168                         default:
 169                                 break;
 170                         }
 171
 172                         ixgbe_init_interrupt_scheme(adapter);
 173                         if (netif_running(netdev))
 174                                 netdev->netdev_ops->ndo_open(netdev);
 175                 }
 176         }
 177 out:
 178         return err;
 179 }
 180
 181 static void ixgbe_dcbnl_get_perm_hw_addr(struct net_device *netdev,
 182                                          u8 *perm_addr)
 183 {
 184         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 185         int i, j;
 186
 187         memset(perm_addr, 0xff, MAX_ADDR_LEN);
 188
 189         for (i = 0; i < netdev->addr_len; i++)
 190                 perm_addr[i] = adapter->hw.mac.perm_addr[i];
 191
 192         switch (adapter->hw.mac.type) {
 193         case ixgbe_mac_82599EB:
 194         case ixgbe_mac_X540:
 195                 for (j = 0; j < netdev->addr_len; j++, i++)
 196                         perm_addr[i] = adapter->hw.mac.san_addr[j];
 197                 break;
 198         default:
 199                 break;
 200         }
 201 }
 202
 203 static void ixgbe_dcbnl_set_pg_tc_cfg_tx(struct net_device *netdev, int tc,
 204                                          u8 prio, u8 bwg_id, u8 bw_pct,
 205                                          u8 up_map)
 206 {
 207         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 208
 209         if (prio != DCB_ATTR_VALUE_UNDEFINED)
 210                 adapter->temp_dcb_cfg.tc_config[tc].path[0].prio_type = prio;
 211         if (bwg_id != DCB_ATTR_VALUE_UNDEFINED)
 212                 adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_id = bwg_id;
 213         if (bw_pct != DCB_ATTR_VALUE_UNDEFINED)
 214                 adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_percent =
 215                         bw_pct;
 216         if (up_map != DCB_ATTR_VALUE_UNDEFINED)
 217                 adapter->temp_dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap =
 218                         up_map;
 219
 220         if ((adapter->temp_dcb_cfg.tc_config[tc].path[0].prio_type !=
 221              adapter->dcb_cfg.tc_config[tc].path[0].prio_type) ||
 222             (adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_id !=
 223              adapter->dcb_cfg.tc_config[tc].path[0].bwg_id) ||
 224             (adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_percent !=
 225              adapter->dcb_cfg.tc_config[tc].path[0].bwg_percent) ||
 226             (adapter->temp_dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap !=
 227              adapter->dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap))
 228                 adapter->dcb_set_bitmap |= BIT_PG_TX;
 229 }
 230
 231 static void ixgbe_dcbnl_set_pg_bwg_cfg_tx(struct net_device *netdev, int bwg_id,
 232                                           u8 bw_pct)
 233 {
 234         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 235
 236         adapter->temp_dcb_cfg.bw_percentage[0][bwg_id] = bw_pct;
 237
 238         if (adapter->temp_dcb_cfg.bw_percentage[0][bwg_id] !=
 239             adapter->dcb_cfg.bw_percentage[0][bwg_id])
 240                 adapter->dcb_set_bitmap |= BIT_PG_TX;
 241 }
 242
 243 static void ixgbe_dcbnl_set_pg_tc_cfg_rx(struct net_device *netdev, int tc,
 244                                          u8 prio, u8 bwg_id, u8 bw_pct,
 245                                          u8 up_map)
 246 {
 247         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 248
 249         if (prio != DCB_ATTR_VALUE_UNDEFINED)
 250                 adapter->temp_dcb_cfg.tc_config[tc].path[1].prio_type = prio;
 251         if (bwg_id != DCB_ATTR_VALUE_UNDEFINED)
 252                 adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_id = bwg_id;
 253         if (bw_pct != DCB_ATTR_VALUE_UNDEFINED)
 254                 adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_percent =
 255                         bw_pct;
 256         if (up_map != DCB_ATTR_VALUE_UNDEFINED)
 257                 adapter->temp_dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap =
 258                         up_map;
 259
 260         if ((adapter->temp_dcb_cfg.tc_config[tc].path[1].prio_type !=
 261              adapter->dcb_cfg.tc_config[tc].path[1].prio_type) ||
 262             (adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_id !=
 263              adapter->dcb_cfg.tc_config[tc].path[1].bwg_id) ||
 264             (adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_percent !=
 265              adapter->dcb_cfg.tc_config[tc].path[1].bwg_percent) ||
 266             (adapter->temp_dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap !=
 267              adapter->dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap))
 268                 adapter->dcb_set_bitmap |= BIT_PG_RX;
 269 }
 270
 271 static void ixgbe_dcbnl_set_pg_bwg_cfg_rx(struct net_device *netdev, int bwg_id,
 272                                           u8 bw_pct)
 273 {
 274         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 275
 276         adapter->temp_dcb_cfg.bw_percentage[1][bwg_id] = bw_pct;
 277
 278         if (adapter->temp_dcb_cfg.bw_percentage[1][bwg_id] !=
 279             adapter->dcb_cfg.bw_percentage[1][bwg_id])
 280                 adapter->dcb_set_bitmap |= BIT_PG_RX;
 281 }
 282
 283 static void ixgbe_dcbnl_get_pg_tc_cfg_tx(struct net_device *netdev, int tc,
 284                                          u8 *prio, u8 *bwg_id, u8 *bw_pct,
 285                                          u8 *up_map)
 286 {
 287         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 288
 289         *prio = adapter->dcb_cfg.tc_config[tc].path[0].prio_type;
 290         *bwg_id = adapter->dcb_cfg.tc_config[tc].path[0].bwg_id;
 291         *bw_pct = adapter->dcb_cfg.tc_config[tc].path[0].bwg_percent;
 292         *up_map = adapter->dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap;
 293 }
 294
 295 static void ixgbe_dcbnl_get_pg_bwg_cfg_tx(struct net_device *netdev, int bwg_id,
 296                                           u8 *bw_pct)
 297 {
 298         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 299
 300         *bw_pct = adapter->dcb_cfg.bw_percentage[0][bwg_id];
 301 }
 302
 303 static void ixgbe_dcbnl_get_pg_tc_cfg_rx(struct net_device *netdev, int tc,
 304                                          u8 *prio, u8 *bwg_id, u8 *bw_pct,
 305                                          u8 *up_map)
 306 {
 307         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 308
 309         *prio = adapter->dcb_cfg.tc_config[tc].path[1].prio_type;
 310         *bwg_id = adapter->dcb_cfg.tc_config[tc].path[1].bwg_id;
 311         *bw_pct = adapter->dcb_cfg.tc_config[tc].path[1].bwg_percent;
 312         *up_map = adapter->dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap;
 313 }
 314
 315 static void ixgbe_dcbnl_get_pg_bwg_cfg_rx(struct net_device *netdev, int bwg_id,
 316                                           u8 *bw_pct)
 317 {
 318         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 319
 320         *bw_pct = adapter->dcb_cfg.bw_percentage[1][bwg_id];
 321 }
 322
 323 static void ixgbe_dcbnl_set_pfc_cfg(struct net_device *netdev, int priority,
 324                                     u8 setting)
 325 {
 326         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 327
 328         adapter->temp_dcb_cfg.tc_config[priority].dcb_pfc = setting;
 329         if (adapter->temp_dcb_cfg.tc_config[priority].dcb_pfc !=
 330             adapter->dcb_cfg.tc_config[priority].dcb_pfc) {
 331                 adapter->dcb_set_bitmap |= BIT_PFC;
 332                 adapter->temp_dcb_cfg.pfc_mode_enable = true;
 333         }
 334 }
 335
 336 static void ixgbe_dcbnl_get_pfc_cfg(struct net_device *netdev, int priority,
 337                                     u8 *setting)
 338 {
 339         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 340
 341         *setting = adapter->dcb_cfg.tc_config[priority].dcb_pfc;
 342 }
 343
 344 static u8 ixgbe_dcbnl_set_all(struct net_device *netdev)
 345 {
 346         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 347         int ret;
 348
 349         if (!adapter->dcb_set_bitmap)
 350                 return DCB_NO_HW_CHG;
 351
 352         ret = ixgbe_copy_dcb_cfg(&adapter->temp_dcb_cfg, &adapter->dcb_cfg,
 353                                  adapter->ring_feature[RING_F_DCB].indices);
 354
 355         if (ret)
 356                 return DCB_NO_HW_CHG;
 357
 358         /*
 359          * Only take down the adapter if an app change occured. FCoE
 360          * may shuffle tx rings in this case and this can not be done
 361          * without a reset currently.
 362          */
 363         if (adapter->dcb_set_bitmap & BIT_APP_UPCHG) {
 364                 while (test_and_set_bit(__IXGBE_RESETTING, &adapter->state))
 365                         msleep(1);
 366
 367                 if (netif_running(netdev))
 368                         netdev->netdev_ops->ndo_stop(netdev);
 369                 ixgbe_clear_interrupt_scheme(adapter);
 370         }
 371
 372         if (adapter->dcb_cfg.pfc_mode_enable) {
 373                 switch (adapter->hw.mac.type) {
 374                 case ixgbe_mac_82599EB:
 375                 case ixgbe_mac_X540:
 376                         if (adapter->hw.fc.current_mode != ixgbe_fc_pfc)
 377                                 adapter->last_lfc_mode =
 378                                                   adapter->hw.fc.current_mode;
 379                         break;
 380                 default:
 381                         break;
 382                 }
 383                 adapter->hw.fc.requested_mode = ixgbe_fc_pfc;
 384         } else {
 385                 switch (adapter->hw.mac.type) {
 386                 case ixgbe_mac_82598EB:
 387                         adapter->hw.fc.requested_mode = ixgbe_fc_none;
 388                         break;
 389                 case ixgbe_mac_82599EB:
 390                 case ixgbe_mac_X540:
 391                         adapter->hw.fc.requested_mode = adapter->last_lfc_mode;
 392                         break;
 393                 default:
 394                         break;
 395                 }
 396         }
 397
 398         if (adapter->dcb_set_bitmap & BIT_APP_UPCHG) {
 399                 ixgbe_init_interrupt_scheme(adapter);
 400                 if (netif_running(netdev))
 401                         netdev->netdev_ops->ndo_open(netdev);
 402                 ret = DCB_HW_CHG_RST;
 403         }
 404
 405         if (adapter->dcb_set_bitmap & BIT_PFC) {
 406                 u8 pfc_en;
 407                 ixgbe_dcb_unpack_pfc(&adapter->dcb_cfg, &pfc_en);
 408                 ixgbe_dcb_hw_pfc_config(&adapter->hw, pfc_en);
 409                 ret = DCB_HW_CHG;
 410         }
 411
 412         if (adapter->dcb_set_bitmap & (BIT_PG_TX|BIT_PG_RX)) {
 413                 u16 refill[MAX_TRAFFIC_CLASS], max[MAX_TRAFFIC_CLASS];
 414                 u8 bwg_id[MAX_TRAFFIC_CLASS], prio_type[MAX_TRAFFIC_CLASS];
 415                 int max_frame = adapter->netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
 416
 417 #ifdef CONFIG_FCOE
 418                 if (adapter->netdev->features & NETIF_F_FCOE_MTU)
 419                         max_frame = max(max_frame, IXGBE_FCOE_JUMBO_FRAME_SIZE);
 420 #endif
 421
 422                 ixgbe_dcb_calculate_tc_credits(&adapter->hw, &adapter->dcb_cfg,
 423                                                max_frame, DCB_TX_CONFIG);
 424                 ixgbe_dcb_calculate_tc_credits(&adapter->hw, &adapter->dcb_cfg,
 425                                                max_frame, DCB_RX_CONFIG);
 426
 427                 ixgbe_dcb_unpack_refill(&adapter->dcb_cfg,
 428                                         DCB_TX_CONFIG, refill);
 429                 ixgbe_dcb_unpack_max(&adapter->dcb_cfg, max);
 430                 ixgbe_dcb_unpack_bwgid(&adapter->dcb_cfg,
 431                                        DCB_TX_CONFIG, bwg_id);
 432                 ixgbe_dcb_unpack_prio(&adapter->dcb_cfg,
 433                                       DCB_TX_CONFIG, prio_type);
 434
 435                 ixgbe_dcb_hw_ets_config(&adapter->hw, refill, max,
 436                                         bwg_id, prio_type);
 437         }
 438
 439         if (adapter->dcb_cfg.pfc_mode_enable)
 440                 adapter->hw.fc.current_mode = ixgbe_fc_pfc;
 441
 442         if (adapter->dcb_set_bitmap & BIT_APP_UPCHG)
 443                 clear_bit(__IXGBE_RESETTING, &adapter->state);
 444         adapter->dcb_set_bitmap = 0x00;
 445         return ret;
 446 }
 447
 448 static u8 ixgbe_dcbnl_getcap(struct net_device *netdev, int capid, u8 *cap)
 449 {
 450         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 451         u8 rval = 0;
 452
 453         if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
 454                 switch (capid) {
 455                 case DCB_CAP_ATTR_PG:
 456                         *cap = true;
 457                         break;
 458                 case DCB_CAP_ATTR_PFC:
 459                         *cap = true;
 460                         break;
 461                 case DCB_CAP_ATTR_UP2TC:
 462                         *cap = false;
 463                         break;
 464                 case DCB_CAP_ATTR_PG_TCS:
 465                         *cap = 0x80;
 466                         break;
 467                 case DCB_CAP_ATTR_PFC_TCS:
 468                         *cap = 0x80;
 469                         break;
 470                 case DCB_CAP_ATTR_GSP:
 471                         *cap = true;
 472                         break;
 473                 case DCB_CAP_ATTR_BCN:
 474                         *cap = false;
 475                         break;
 476                 default:
 477                         rval = -EINVAL;
 478                         break;
 479                 }
 480         } else {
 481                 rval = -EINVAL;
 482         }
 483
 484         return rval;
 485 }
 486
 487 static u8 ixgbe_dcbnl_getnumtcs(struct net_device *netdev, int tcid, u8 *num)
 488 {
 489         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 490         u8 rval = 0;
 491
 492         if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
 493                 switch (tcid) {
 494                 case DCB_NUMTCS_ATTR_PG:
 495                         *num = MAX_TRAFFIC_CLASS;
 496                         break;
 497                 case DCB_NUMTCS_ATTR_PFC:
 498                         *num = MAX_TRAFFIC_CLASS;
 499                         break;
 500                 default:
 501                         rval = -EINVAL;
 502                         break;
 503                 }
 504         } else {
 505                 rval = -EINVAL;
 506         }
 507
 508         return rval;
 509 }
 510
 511 static u8 ixgbe_dcbnl_setnumtcs(struct net_device *netdev, int tcid, u8 num)
 512 {
 513         return -EINVAL;
 514 }
 515
 516 static u8 ixgbe_dcbnl_getpfcstate(struct net_device *netdev)
 517 {
 518         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 519
 520         return adapter->dcb_cfg.pfc_mode_enable;
 521 }
 522
 523 static void ixgbe_dcbnl_setpfcstate(struct net_device *netdev, u8 state)
 524 {
 525         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 526
 527         adapter->temp_dcb_cfg.pfc_mode_enable = state;
 528         if (adapter->temp_dcb_cfg.pfc_mode_enable !=
 529                 adapter->dcb_cfg.pfc_mode_enable)
 530                 adapter->dcb_set_bitmap |= BIT_PFC;
 531 }
 532
 533 /**
 534  * ixgbe_dcbnl_getapp - retrieve the DCBX application user priority
 535  * @netdev : the corresponding netdev
 536  * @idtype : identifies the id as ether type or TCP/UDP port number
 537  * @id: id is either ether type or TCP/UDP port number
 538  *
 539  * Returns : on success, returns a non-zero 802.1p user priority bitmap
 540  * otherwise returns 0 as the invalid user priority bitmap to indicate an
 541  * error.
 542  */
 543 static u8 ixgbe_dcbnl_getapp(struct net_device *netdev, u8 idtype, u16 id)
 544 {
 545         u8 rval = 0;
 546
 547         switch (idtype) {
 548         case DCB_APP_IDTYPE_ETHTYPE:
 549 #ifdef IXGBE_FCOE
 550                 if (id == ETH_P_FCOE)
 551                         rval = ixgbe_fcoe_getapp(netdev_priv(netdev));
 552 #endif
 553                 break;
 554         case DCB_APP_IDTYPE_PORTNUM:
 555                 break;
 556         default:
 557                 break;
 558         }
 559         return rval;
 560 }
 561
 562 /**
 563  * ixgbe_dcbnl_setapp - set the DCBX application user priority
 564  * @netdev : the corresponding netdev
 565  * @idtype : identifies the id as ether type or TCP/UDP port number
 566  * @id: id is either ether type or TCP/UDP port number
 567  * @up: the 802.1p user priority bitmap
 568  *
 569  * Returns : 0 on success or 1 on error
 570  */
 571 static u8 ixgbe_dcbnl_setapp(struct net_device *netdev,
 572                              u8 idtype, u16 id, u8 up)
 573 {
 574         u8 rval = 1;
 575
 576         switch (idtype) {
 577         case DCB_APP_IDTYPE_ETHTYPE:
 578 #ifdef IXGBE_FCOE
 579                 if (id == ETH_P_FCOE) {
 580                         u8 old_tc;
 581                         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 582
 583                         /* Get current programmed tc */
 584                         old_tc = adapter->fcoe.tc;
 585                         rval = ixgbe_fcoe_setapp(adapter, up);
 586
 587                         if (rval ||
 588                            !(adapter->flags & IXGBE_FLAG_DCB_ENABLED) ||
 589                            !(adapter->flags & IXGBE_FLAG_FCOE_ENABLED))
 590                                 break;
 591
 592                         /* The FCoE application priority may be changed multiple
 593                          * times in quick sucession with switches that build up
 594                          * TLVs. To avoid creating uneeded device resets this
 595                          * checks the actual HW configuration and clears
 596                          * BIT_APP_UPCHG if a HW configuration change is not
 597                          * need
 598                          */
 599                         if (old_tc == adapter->fcoe.tc)
 600                                 adapter->dcb_set_bitmap &= ~BIT_APP_UPCHG;
 601                         else
 602                                 adapter->dcb_set_bitmap |= BIT_APP_UPCHG;
 603                 }
 604 #endif
 605                 break;
 606         case DCB_APP_IDTYPE_PORTNUM:
 607                 break;
 608         default:
 609                 break;
 610         }
 611         return rval;
 612 }
 613
 614 static int ixgbe_dcbnl_ieee_getets(struct net_device *dev,
 615                                    struct ieee_ets *ets)
 616 {
 617         struct ixgbe_adapter *adapter = netdev_priv(dev);
 618         struct ieee_ets *my_ets = adapter->ixgbe_ieee_ets;
 619
 620         /* No IEEE PFC settings available */
 621         if (!my_ets)
 622                 return -EINVAL;
 623
 624         ets->ets_cap = MAX_TRAFFIC_CLASS;
 625         ets->cbs = my_ets->cbs;
 626         memcpy(ets->tc_tx_bw, my_ets->tc_tx_bw, sizeof(ets->tc_tx_bw));
 627         memcpy(ets->tc_rx_bw, my_ets->tc_rx_bw, sizeof(ets->tc_rx_bw));
 628         memcpy(ets->tc_tsa, my_ets->tc_tsa, sizeof(ets->tc_tsa));
 629         memcpy(ets->prio_tc, my_ets->prio_tc, sizeof(ets->prio_tc));
 630         return 0;
 631 }
 632
 633 static int ixgbe_dcbnl_ieee_setets(struct net_device *dev,
 634                                    struct ieee_ets *ets)
 635 {
 636         struct ixgbe_adapter *adapter = netdev_priv(dev);
 637         __u16 refill[IEEE_8021QAZ_MAX_TCS], max[IEEE_8021QAZ_MAX_TCS];
 638         int max_frame = dev->mtu + ETH_HLEN + ETH_FCS_LEN;
 639         int err;
 640         /* naively give each TC a bwg to map onto CEE hardware */
 641         __u8 bwg_id[IEEE_8021QAZ_MAX_TCS] = {0, 1, 2, 3, 4, 5, 6, 7};
 642
 643         if (!adapter->ixgbe_ieee_ets) {
 644                 adapter->ixgbe_ieee_ets = kmalloc(sizeof(struct ieee_ets),
 645                                                   GFP_KERNEL);
 646                 if (!adapter->ixgbe_ieee_ets)
 647                         return -ENOMEM;
 648         }
 649
 650
 651         memcpy(adapter->ixgbe_ieee_ets, ets, sizeof(*adapter->ixgbe_ieee_ets));
 652
 653         ixgbe_ieee_credits(ets->tc_tx_bw, refill, max, max_frame);
 654         err = ixgbe_dcb_hw_ets_config(&adapter->hw, refill, max,
 655                                       bwg_id, ets->tc_tsa);
 656         return err;
 657 }
 658
 659 static int ixgbe_dcbnl_ieee_getpfc(struct net_device *dev,
 660                                    struct ieee_pfc *pfc)
 661 {
 662         struct ixgbe_adapter *adapter = netdev_priv(dev);
 663         struct ieee_pfc *my_pfc = adapter->ixgbe_ieee_pfc;
 664         int i;
 665
 666         /* No IEEE PFC settings available */
 667         if (!my_pfc)
 668                 return -EINVAL;
 669
 670         pfc->pfc_cap = MAX_TRAFFIC_CLASS;
 671         pfc->pfc_en = my_pfc->pfc_en;
 672         pfc->mbc = my_pfc->mbc;
 673         pfc->delay = my_pfc->delay;
 674
 675         for (i = 0; i < MAX_TRAFFIC_CLASS; i++) {
 676                 pfc->requests[i] = adapter->stats.pxoffrxc[i];
 677                 pfc->indications[i] = adapter->stats.pxofftxc[i];
 678         }
 679
 680         return 0;
 681 }
 682
 683 static int ixgbe_dcbnl_ieee_setpfc(struct net_device *dev,
 684                                    struct ieee_pfc *pfc)
 685 {
 686         struct ixgbe_adapter *adapter = netdev_priv(dev);
 687         int err;
 688
 689         if (!adapter->ixgbe_ieee_pfc) {
 690                 adapter->ixgbe_ieee_pfc = kmalloc(sizeof(struct ieee_pfc),
 691                                                   GFP_KERNEL);
 692                 if (!adapter->ixgbe_ieee_pfc)
 693                         return -ENOMEM;
 694         }
 695
 696         memcpy(adapter->ixgbe_ieee_pfc, pfc, sizeof(*adapter->ixgbe_ieee_pfc));
 697         err = ixgbe_dcb_hw_pfc_config(&adapter->hw, pfc->pfc_en);
 698         return err;
 699 }
 700
 701 const struct dcbnl_rtnl_ops dcbnl_ops = {
 702         .ieee_getets    = ixgbe_dcbnl_ieee_getets,
 703         .ieee_setets    = ixgbe_dcbnl_ieee_setets,
 704         .ieee_getpfc    = ixgbe_dcbnl_ieee_getpfc,
 705         .ieee_setpfc    = ixgbe_dcbnl_ieee_setpfc,
 706         .getstate       = ixgbe_dcbnl_get_state,
 707         .setstate       = ixgbe_dcbnl_set_state,
 708         .getpermhwaddr  = ixgbe_dcbnl_get_perm_hw_addr,
 709         .setpgtccfgtx   = ixgbe_dcbnl_set_pg_tc_cfg_tx,
 710         .setpgbwgcfgtx  = ixgbe_dcbnl_set_pg_bwg_cfg_tx,
 711         .setpgtccfgrx   = ixgbe_dcbnl_set_pg_tc_cfg_rx,
 712         .setpgbwgcfgrx  = ixgbe_dcbnl_set_pg_bwg_cfg_rx,
 713         .getpgtccfgtx   = ixgbe_dcbnl_get_pg_tc_cfg_tx,
 714         .getpgbwgcfgtx  = ixgbe_dcbnl_get_pg_bwg_cfg_tx,
 715         .getpgtccfgrx   = ixgbe_dcbnl_get_pg_tc_cfg_rx,
 716         .getpgbwgcfgrx  = ixgbe_dcbnl_get_pg_bwg_cfg_rx,
 717         .setpfccfg      = ixgbe_dcbnl_set_pfc_cfg,
 718         .getpfccfg      = ixgbe_dcbnl_get_pfc_cfg,
 719         .setall         = ixgbe_dcbnl_set_all,
 720         .getcap         = ixgbe_dcbnl_getcap,
 721         .getnumtcs      = ixgbe_dcbnl_getnumtcs,
 722         .setnumtcs      = ixgbe_dcbnl_setnumtcs,
 723         .getpfcstate    = ixgbe_dcbnl_getpfcstate,
 724         .setpfcstate    = ixgbe_dcbnl_setpfcstate,
 725         .getapp         = ixgbe_dcbnl_getapp,
 726         .setapp         = ixgbe_dcbnl_setapp,
 727 };
 728