drivers/net/ixgbe/ixgbe_dcb_nl.c

   1 /*******************************************************************************
   2
   3   Intel 10 Gigabit PCI Express Linux driver
   4   Copyright(c) 1999 - 2009 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_RESETLINK   0x40
  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                         DPRINTK(DRV, ERR, "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                 if (adapter->hw.mac.type == ixgbe_mac_82598EB) {
 133                         adapter->last_lfc_mode = adapter->hw.fc.current_mode;
 134                         adapter->hw.fc.requested_mode = ixgbe_fc_none;
 135                 }
 136                 adapter->flags &= ~IXGBE_FLAG_RSS_ENABLED;
 137                 if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
 138                         adapter->flags &= ~IXGBE_FLAG_FDIR_HASH_CAPABLE;
 139                         adapter->flags &= ~IXGBE_FLAG_FDIR_PERFECT_CAPABLE;
 140                 }
 141                 adapter->flags |= IXGBE_FLAG_DCB_ENABLED;
 142 #ifdef IXGBE_FCOE
 143                 /* Turn on FCoE offload */
 144                 if ((adapter->flags & IXGBE_FLAG_FCOE_CAPABLE) &&
 145                     (!(adapter->flags & IXGBE_FLAG_FCOE_ENABLED))) {
 146                         adapter->flags |= IXGBE_FLAG_FCOE_ENABLED;
 147                         adapter->ring_feature[RING_F_FCOE].indices =
 148                                 IXGBE_FCRETA_SIZE;
 149                         netdev->features |= NETIF_F_FCOE_CRC;
 150                         netdev->features |= NETIF_F_FSO;
 151                         netdev->features |= NETIF_F_FCOE_MTU;
 152                         netdev->vlan_features |= NETIF_F_FCOE_CRC;
 153                         netdev->vlan_features |= NETIF_F_FSO;
 154                         netdev->vlan_features |= NETIF_F_FCOE_MTU;
 155                         netdev->fcoe_ddp_xid = IXGBE_FCOE_DDP_MAX - 1;
 156                         netdev_features_change(netdev);
 157                 }
 158 #endif /* IXGBE_FCOE */
 159                 ixgbe_init_interrupt_scheme(adapter);
 160                 if (netif_running(netdev))
 161                         netdev->netdev_ops->ndo_open(netdev);
 162         } else {
 163                 /* Turn off DCB */
 164                 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
 165                         if (netif_running(netdev))
 166                                 netdev->netdev_ops->ndo_stop(netdev);
 167                         ixgbe_clear_interrupt_scheme(adapter);
 168
 169                         adapter->hw.fc.requested_mode = adapter->last_lfc_mode;
 170                         adapter->temp_dcb_cfg.pfc_mode_enable = false;
 171                         adapter->dcb_cfg.pfc_mode_enable = false;
 172                         adapter->flags &= ~IXGBE_FLAG_DCB_ENABLED;
 173                         adapter->flags |= IXGBE_FLAG_RSS_ENABLED;
 174                         if (adapter->hw.mac.type == ixgbe_mac_82599EB)
 175                                 adapter->flags |= IXGBE_FLAG_FDIR_HASH_CAPABLE;
 176
 177 #ifdef IXGBE_FCOE
 178                         /* Turn off FCoE offload */
 179                         if (adapter->flags & (IXGBE_FLAG_FCOE_CAPABLE |
 180                              IXGBE_FLAG_FCOE_ENABLED)) {
 181                                 adapter->flags &= ~IXGBE_FLAG_FCOE_ENABLED;
 182                                 adapter->ring_feature[RING_F_FCOE].indices = 0;
 183                                 netdev->features &= ~NETIF_F_FCOE_CRC;
 184                                 netdev->features &= ~NETIF_F_FSO;
 185                                 netdev->features &= ~NETIF_F_FCOE_MTU;
 186                                 netdev->vlan_features &= ~NETIF_F_FCOE_CRC;
 187                                 netdev->vlan_features &= ~NETIF_F_FSO;
 188                                 netdev->vlan_features &= ~NETIF_F_FCOE_MTU;
 189                                 netdev->fcoe_ddp_xid = 0;
 190                                 netdev_features_change(netdev);
 191                         }
 192 #endif /* IXGBE_FCOE */
 193                         ixgbe_init_interrupt_scheme(adapter);
 194                         if (netif_running(netdev))
 195                                 netdev->netdev_ops->ndo_open(netdev);
 196                 }
 197         }
 198 out:
 199         return err;
 200 }
 201
 202 static void ixgbe_dcbnl_get_perm_hw_addr(struct net_device *netdev,
 203                                          u8 *perm_addr)
 204 {
 205         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 206         int i, j;
 207
 208         memset(perm_addr, 0xff, MAX_ADDR_LEN);
 209
 210         for (i = 0; i < netdev->addr_len; i++)
 211                 perm_addr[i] = adapter->hw.mac.perm_addr[i];
 212
 213         if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
 214                 for (j = 0; j < netdev->addr_len; j++, i++)
 215                         perm_addr[i] = adapter->hw.mac.san_addr[j];
 216         }
 217 }
 218
 219 static void ixgbe_dcbnl_set_pg_tc_cfg_tx(struct net_device *netdev, int tc,
 220                                          u8 prio, u8 bwg_id, u8 bw_pct,
 221                                          u8 up_map)
 222 {
 223         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 224
 225         if (prio != DCB_ATTR_VALUE_UNDEFINED)
 226                 adapter->temp_dcb_cfg.tc_config[tc].path[0].prio_type = prio;
 227         if (bwg_id != DCB_ATTR_VALUE_UNDEFINED)
 228                 adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_id = bwg_id;
 229         if (bw_pct != DCB_ATTR_VALUE_UNDEFINED)
 230                 adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_percent =
 231                         bw_pct;
 232         if (up_map != DCB_ATTR_VALUE_UNDEFINED)
 233                 adapter->temp_dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap =
 234                         up_map;
 235
 236         if ((adapter->temp_dcb_cfg.tc_config[tc].path[0].prio_type !=
 237              adapter->dcb_cfg.tc_config[tc].path[0].prio_type) ||
 238             (adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_id !=
 239              adapter->dcb_cfg.tc_config[tc].path[0].bwg_id) ||
 240             (adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_percent !=
 241              adapter->dcb_cfg.tc_config[tc].path[0].bwg_percent) ||
 242             (adapter->temp_dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap !=
 243              adapter->dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap)) {
 244                 adapter->dcb_set_bitmap |= BIT_PG_TX;
 245                 adapter->dcb_set_bitmap |= BIT_RESETLINK;
 246         }
 247 }
 248
 249 static void ixgbe_dcbnl_set_pg_bwg_cfg_tx(struct net_device *netdev, int bwg_id,
 250                                           u8 bw_pct)
 251 {
 252         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 253
 254         adapter->temp_dcb_cfg.bw_percentage[0][bwg_id] = bw_pct;
 255
 256         if (adapter->temp_dcb_cfg.bw_percentage[0][bwg_id] !=
 257             adapter->dcb_cfg.bw_percentage[0][bwg_id]) {
 258                 adapter->dcb_set_bitmap |= BIT_PG_RX;
 259                 adapter->dcb_set_bitmap |= BIT_RESETLINK;
 260         }
 261 }
 262
 263 static void ixgbe_dcbnl_set_pg_tc_cfg_rx(struct net_device *netdev, int tc,
 264                                          u8 prio, u8 bwg_id, u8 bw_pct,
 265                                          u8 up_map)
 266 {
 267         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 268
 269         if (prio != DCB_ATTR_VALUE_UNDEFINED)
 270                 adapter->temp_dcb_cfg.tc_config[tc].path[1].prio_type = prio;
 271         if (bwg_id != DCB_ATTR_VALUE_UNDEFINED)
 272                 adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_id = bwg_id;
 273         if (bw_pct != DCB_ATTR_VALUE_UNDEFINED)
 274                 adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_percent =
 275                         bw_pct;
 276         if (up_map != DCB_ATTR_VALUE_UNDEFINED)
 277                 adapter->temp_dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap =
 278                         up_map;
 279
 280         if ((adapter->temp_dcb_cfg.tc_config[tc].path[1].prio_type !=
 281              adapter->dcb_cfg.tc_config[tc].path[1].prio_type) ||
 282             (adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_id !=
 283              adapter->dcb_cfg.tc_config[tc].path[1].bwg_id) ||
 284             (adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_percent !=
 285              adapter->dcb_cfg.tc_config[tc].path[1].bwg_percent) ||
 286             (adapter->temp_dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap !=
 287              adapter->dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap)) {
 288                 adapter->dcb_set_bitmap |= BIT_PG_RX;
 289                 adapter->dcb_set_bitmap |= BIT_RESETLINK;
 290         }
 291 }
 292
 293 static void ixgbe_dcbnl_set_pg_bwg_cfg_rx(struct net_device *netdev, int bwg_id,
 294                                           u8 bw_pct)
 295 {
 296         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 297
 298         adapter->temp_dcb_cfg.bw_percentage[1][bwg_id] = bw_pct;
 299
 300         if (adapter->temp_dcb_cfg.bw_percentage[1][bwg_id] !=
 301             adapter->dcb_cfg.bw_percentage[1][bwg_id]) {
 302                 adapter->dcb_set_bitmap |= BIT_PG_RX;
 303                 adapter->dcb_set_bitmap |= BIT_RESETLINK;
 304         }
 305 }
 306
 307 static void ixgbe_dcbnl_get_pg_tc_cfg_tx(struct net_device *netdev, int tc,
 308                                          u8 *prio, u8 *bwg_id, u8 *bw_pct,
 309                                          u8 *up_map)
 310 {
 311         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 312
 313         *prio = adapter->dcb_cfg.tc_config[tc].path[0].prio_type;
 314         *bwg_id = adapter->dcb_cfg.tc_config[tc].path[0].bwg_id;
 315         *bw_pct = adapter->dcb_cfg.tc_config[tc].path[0].bwg_percent;
 316         *up_map = adapter->dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap;
 317 }
 318
 319 static void ixgbe_dcbnl_get_pg_bwg_cfg_tx(struct net_device *netdev, int bwg_id,
 320                                           u8 *bw_pct)
 321 {
 322         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 323
 324         *bw_pct = adapter->dcb_cfg.bw_percentage[0][bwg_id];
 325 }
 326
 327 static void ixgbe_dcbnl_get_pg_tc_cfg_rx(struct net_device *netdev, int tc,
 328                                          u8 *prio, u8 *bwg_id, u8 *bw_pct,
 329                                          u8 *up_map)
 330 {
 331         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 332
 333         *prio = adapter->dcb_cfg.tc_config[tc].path[1].prio_type;
 334         *bwg_id = adapter->dcb_cfg.tc_config[tc].path[1].bwg_id;
 335         *bw_pct = adapter->dcb_cfg.tc_config[tc].path[1].bwg_percent;
 336         *up_map = adapter->dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap;
 337 }
 338
 339 static void ixgbe_dcbnl_get_pg_bwg_cfg_rx(struct net_device *netdev, int bwg_id,
 340                                           u8 *bw_pct)
 341 {
 342         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 343
 344         *bw_pct = adapter->dcb_cfg.bw_percentage[1][bwg_id];
 345 }
 346
 347 static void ixgbe_dcbnl_set_pfc_cfg(struct net_device *netdev, int priority,
 348                                     u8 setting)
 349 {
 350         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 351
 352         adapter->temp_dcb_cfg.tc_config[priority].dcb_pfc = setting;
 353         if (adapter->temp_dcb_cfg.tc_config[priority].dcb_pfc !=
 354             adapter->dcb_cfg.tc_config[priority].dcb_pfc) {
 355                 adapter->dcb_set_bitmap |= BIT_PFC;
 356                 adapter->temp_dcb_cfg.pfc_mode_enable = true;
 357         }
 358 }
 359
 360 static void ixgbe_dcbnl_get_pfc_cfg(struct net_device *netdev, int priority,
 361                                     u8 *setting)
 362 {
 363         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 364
 365         *setting = adapter->dcb_cfg.tc_config[priority].dcb_pfc;
 366 }
 367
 368 static u8 ixgbe_dcbnl_set_all(struct net_device *netdev)
 369 {
 370         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 371         int ret;
 372
 373         if (!adapter->dcb_set_bitmap)
 374                 return DCB_NO_HW_CHG;
 375
 376         /*
 377          * Only take down the adapter if the configuration change
 378          * requires a reset.
 379          */
 380         if (adapter->dcb_set_bitmap & BIT_RESETLINK) {
 381                 while (test_and_set_bit(__IXGBE_RESETTING, &adapter->state))
 382                         msleep(1);
 383
 384                 if (netif_running(netdev))
 385                         ixgbe_down(adapter);
 386         }
 387
 388         ret = ixgbe_copy_dcb_cfg(&adapter->temp_dcb_cfg, &adapter->dcb_cfg,
 389                                  adapter->ring_feature[RING_F_DCB].indices);
 390         if (ret) {
 391                 if (adapter->dcb_set_bitmap & BIT_RESETLINK)
 392                         clear_bit(__IXGBE_RESETTING, &adapter->state);
 393                 return DCB_NO_HW_CHG;
 394         }
 395
 396         if (adapter->dcb_cfg.pfc_mode_enable) {
 397                 if ((adapter->hw.mac.type != ixgbe_mac_82598EB) &&
 398                         (adapter->hw.fc.current_mode != ixgbe_fc_pfc))
 399                         adapter->last_lfc_mode = adapter->hw.fc.current_mode;
 400                 adapter->hw.fc.requested_mode = ixgbe_fc_pfc;
 401         } else {
 402                 if (adapter->hw.mac.type != ixgbe_mac_82598EB)
 403                         adapter->hw.fc.requested_mode = adapter->last_lfc_mode;
 404                 else
 405                         adapter->hw.fc.requested_mode = ixgbe_fc_none;
 406         }
 407
 408         if (adapter->dcb_set_bitmap & BIT_RESETLINK) {
 409                 if (netif_running(netdev))
 410                         ixgbe_up(adapter);
 411                 ret = DCB_HW_CHG_RST;
 412         } else if (adapter->dcb_set_bitmap & BIT_PFC) {
 413                 if (adapter->hw.mac.type == ixgbe_mac_82598EB)
 414                         ixgbe_dcb_config_pfc_82598(&adapter->hw,
 415                                                    &adapter->dcb_cfg);
 416                 else if (adapter->hw.mac.type == ixgbe_mac_82599EB)
 417                         ixgbe_dcb_config_pfc_82599(&adapter->hw,
 418                                                    &adapter->dcb_cfg);
 419                 ret = DCB_HW_CHG;
 420         }
 421         if (adapter->dcb_cfg.pfc_mode_enable)
 422                 adapter->hw.fc.current_mode = ixgbe_fc_pfc;
 423
 424         if (adapter->dcb_set_bitmap & BIT_RESETLINK)
 425                 clear_bit(__IXGBE_RESETTING, &adapter->state);
 426         adapter->dcb_set_bitmap = 0x00;
 427         return ret;
 428 }
 429
 430 static u8 ixgbe_dcbnl_getcap(struct net_device *netdev, int capid, u8 *cap)
 431 {
 432         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 433         u8 rval = 0;
 434
 435         if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
 436                 switch (capid) {
 437                 case DCB_CAP_ATTR_PG:
 438                         *cap = true;
 439                         break;
 440                 case DCB_CAP_ATTR_PFC:
 441                         *cap = true;
 442                         break;
 443                 case DCB_CAP_ATTR_UP2TC:
 444                         *cap = false;
 445                         break;
 446                 case DCB_CAP_ATTR_PG_TCS:
 447                         *cap = 0x80;
 448                         break;
 449                 case DCB_CAP_ATTR_PFC_TCS:
 450                         *cap = 0x80;
 451                         break;
 452                 case DCB_CAP_ATTR_GSP:
 453                         *cap = true;
 454                         break;
 455                 case DCB_CAP_ATTR_BCN:
 456                         *cap = false;
 457                         break;
 458                 default:
 459                         rval = -EINVAL;
 460                         break;
 461                 }
 462         } else {
 463                 rval = -EINVAL;
 464         }
 465
 466         return rval;
 467 }
 468
 469 static u8 ixgbe_dcbnl_getnumtcs(struct net_device *netdev, int tcid, u8 *num)
 470 {
 471         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 472         u8 rval = 0;
 473
 474         if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
 475                 switch (tcid) {
 476                 case DCB_NUMTCS_ATTR_PG:
 477                         *num = MAX_TRAFFIC_CLASS;
 478                         break;
 479                 case DCB_NUMTCS_ATTR_PFC:
 480                         *num = MAX_TRAFFIC_CLASS;
 481                         break;
 482                 default:
 483                         rval = -EINVAL;
 484                         break;
 485                 }
 486         } else {
 487                 rval = -EINVAL;
 488         }
 489
 490         return rval;
 491 }
 492
 493 static u8 ixgbe_dcbnl_setnumtcs(struct net_device *netdev, int tcid, u8 num)
 494 {
 495         return -EINVAL;
 496 }
 497
 498 static u8 ixgbe_dcbnl_getpfcstate(struct net_device *netdev)
 499 {
 500         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 501
 502         return adapter->dcb_cfg.pfc_mode_enable;
 503 }
 504
 505 static void ixgbe_dcbnl_setpfcstate(struct net_device *netdev, u8 state)
 506 {
 507         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 508
 509         adapter->temp_dcb_cfg.pfc_mode_enable = state;
 510         if (adapter->temp_dcb_cfg.pfc_mode_enable !=
 511                 adapter->dcb_cfg.pfc_mode_enable)
 512                 adapter->dcb_set_bitmap |= BIT_PFC;
 513         return;
 514 }
 515
 516 struct dcbnl_rtnl_ops dcbnl_ops = {
 517         .getstate       = ixgbe_dcbnl_get_state,
 518         .setstate       = ixgbe_dcbnl_set_state,
 519         .getpermhwaddr  = ixgbe_dcbnl_get_perm_hw_addr,
 520         .setpgtccfgtx   = ixgbe_dcbnl_set_pg_tc_cfg_tx,
 521         .setpgbwgcfgtx  = ixgbe_dcbnl_set_pg_bwg_cfg_tx,
 522         .setpgtccfgrx   = ixgbe_dcbnl_set_pg_tc_cfg_rx,
 523         .setpgbwgcfgrx  = ixgbe_dcbnl_set_pg_bwg_cfg_rx,
 524         .getpgtccfgtx   = ixgbe_dcbnl_get_pg_tc_cfg_tx,
 525         .getpgbwgcfgtx  = ixgbe_dcbnl_get_pg_bwg_cfg_tx,
 526         .getpgtccfgrx   = ixgbe_dcbnl_get_pg_tc_cfg_rx,
 527         .getpgbwgcfgrx  = ixgbe_dcbnl_get_pg_bwg_cfg_rx,
 528         .setpfccfg      = ixgbe_dcbnl_set_pfc_cfg,
 529         .getpfccfg      = ixgbe_dcbnl_get_pfc_cfg,
 530         .setall         = ixgbe_dcbnl_set_all,
 531         .getcap         = ixgbe_dcbnl_getcap,
 532         .getnumtcs      = ixgbe_dcbnl_getnumtcs,
 533         .setnumtcs      = ixgbe_dcbnl_setnumtcs,
 534         .getpfcstate    = ixgbe_dcbnl_getpfcstate,
 535         .setpfcstate    = ixgbe_dcbnl_setpfcstate,
 536 };
 537