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_RESETLINK   0x40
  41 #define BIT_LINKSPEED   0x80
  42
  43 /* Responses for the DCB_C_SET_ALL command */
  44 #define DCB_HW_CHG_RST  0  /* DCB configuration changed with reset */
  45 #define DCB_NO_HW_CHG   1  /* DCB configuration did not change */
  46 #define DCB_HW_CHG      2  /* DCB configuration changed, no reset */
  47
  48 int ixgbe_copy_dcb_cfg(struct ixgbe_dcb_config *src_dcb_cfg,
  49                        struct ixgbe_dcb_config *dst_dcb_cfg, int tc_max)
  50 {
  51         struct tc_configuration *src_tc_cfg = NULL;
  52         struct tc_configuration *dst_tc_cfg = NULL;
  53         int i;
  54
  55         if (!src_dcb_cfg || !dst_dcb_cfg)
  56                 return -EINVAL;
  57
  58         for (i = DCB_PG_ATTR_TC_0; i < tc_max + DCB_PG_ATTR_TC_0; i++) {
  59                 src_tc_cfg = &src_dcb_cfg->tc_config[i - DCB_PG_ATTR_TC_0];
  60                 dst_tc_cfg = &dst_dcb_cfg->tc_config[i - DCB_PG_ATTR_TC_0];
  61
  62                 dst_tc_cfg->path[DCB_TX_CONFIG].prio_type =
  63                                 src_tc_cfg->path[DCB_TX_CONFIG].prio_type;
  64
  65                 dst_tc_cfg->path[DCB_TX_CONFIG].bwg_id =
  66                                 src_tc_cfg->path[DCB_TX_CONFIG].bwg_id;
  67
  68                 dst_tc_cfg->path[DCB_TX_CONFIG].bwg_percent =
  69                                 src_tc_cfg->path[DCB_TX_CONFIG].bwg_percent;
  70
  71                 dst_tc_cfg->path[DCB_TX_CONFIG].up_to_tc_bitmap =
  72                                 src_tc_cfg->path[DCB_TX_CONFIG].up_to_tc_bitmap;
  73
  74                 dst_tc_cfg->path[DCB_RX_CONFIG].prio_type =
  75                                 src_tc_cfg->path[DCB_RX_CONFIG].prio_type;
  76
  77                 dst_tc_cfg->path[DCB_RX_CONFIG].bwg_id =
  78                                 src_tc_cfg->path[DCB_RX_CONFIG].bwg_id;
  79
  80                 dst_tc_cfg->path[DCB_RX_CONFIG].bwg_percent =
  81                                 src_tc_cfg->path[DCB_RX_CONFIG].bwg_percent;
  82
  83                 dst_tc_cfg->path[DCB_RX_CONFIG].up_to_tc_bitmap =
  84                                 src_tc_cfg->path[DCB_RX_CONFIG].up_to_tc_bitmap;
  85         }
  86
  87         for (i = DCB_PG_ATTR_BW_ID_0; i < DCB_PG_ATTR_BW_ID_MAX; i++) {
  88                 dst_dcb_cfg->bw_percentage[DCB_TX_CONFIG]
  89                         [i-DCB_PG_ATTR_BW_ID_0] = src_dcb_cfg->bw_percentage
  90                                 [DCB_TX_CONFIG][i-DCB_PG_ATTR_BW_ID_0];
  91                 dst_dcb_cfg->bw_percentage[DCB_RX_CONFIG]
  92                         [i-DCB_PG_ATTR_BW_ID_0] = src_dcb_cfg->bw_percentage
  93                                 [DCB_RX_CONFIG][i-DCB_PG_ATTR_BW_ID_0];
  94         }
  95
  96         for (i = DCB_PFC_UP_ATTR_0; i < DCB_PFC_UP_ATTR_MAX; i++) {
  97                 dst_dcb_cfg->tc_config[i - DCB_PFC_UP_ATTR_0].dcb_pfc =
  98                         src_dcb_cfg->tc_config[i - DCB_PFC_UP_ATTR_0].dcb_pfc;
  99         }
 100
 101         dst_dcb_cfg->pfc_mode_enable = src_dcb_cfg->pfc_mode_enable;
 102
 103         return 0;
 104 }
 105
 106 static u8 ixgbe_dcbnl_get_state(struct net_device *netdev)
 107 {
 108         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 109
 110         return !!(adapter->flags & IXGBE_FLAG_DCB_ENABLED);
 111 }
 112
 113 static u8 ixgbe_dcbnl_set_state(struct net_device *netdev, u8 state)
 114 {
 115         u8 err = 0;
 116         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 117
 118         if (state > 0) {
 119                 /* Turn on DCB */
 120                 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED)
 121                         goto out;
 122
 123                 if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED)) {
 124                         e_err(drv, "Enable failed, needs MSI-X\n");
 125                         err = 1;
 126                         goto out;
 127                 }
 128
 129                 if (netif_running(netdev))
 130                         netdev->netdev_ops->ndo_stop(netdev);
 131                 ixgbe_clear_interrupt_scheme(adapter);
 132
 133                 adapter->flags &= ~IXGBE_FLAG_RSS_ENABLED;
 134                 switch (adapter->hw.mac.type) {
 135                 case ixgbe_mac_82598EB:
 136                         adapter->last_lfc_mode = adapter->hw.fc.current_mode;
 137                         adapter->hw.fc.requested_mode = ixgbe_fc_none;
 138                         break;
 139                 case ixgbe_mac_82599EB:
 140                 case ixgbe_mac_X540:
 141                         adapter->flags &= ~IXGBE_FLAG_FDIR_HASH_CAPABLE;
 142                         adapter->flags &= ~IXGBE_FLAG_FDIR_PERFECT_CAPABLE;
 143                         break;
 144                 default:
 145                         break;
 146                 }
 147
 148                 adapter->flags |= IXGBE_FLAG_DCB_ENABLED;
 149                 ixgbe_init_interrupt_scheme(adapter);
 150                 if (netif_running(netdev))
 151                         netdev->netdev_ops->ndo_open(netdev);
 152         } else {
 153                 /* Turn off DCB */
 154                 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
 155                         if (netif_running(netdev))
 156                                 netdev->netdev_ops->ndo_stop(netdev);
 157                         ixgbe_clear_interrupt_scheme(adapter);
 158
 159                         adapter->hw.fc.requested_mode = adapter->last_lfc_mode;
 160                         adapter->temp_dcb_cfg.pfc_mode_enable = false;
 161                         adapter->dcb_cfg.pfc_mode_enable = false;
 162                         adapter->flags &= ~IXGBE_FLAG_DCB_ENABLED;
 163                         adapter->flags |= IXGBE_FLAG_RSS_ENABLED;
 164                         switch (adapter->hw.mac.type) {
 165                         case ixgbe_mac_82599EB:
 166                         case ixgbe_mac_X540:
 167                                 adapter->flags |= IXGBE_FLAG_FDIR_HASH_CAPABLE;
 168                                 break;
 169                         default:
 170                                 break;
 171                         }
 172
 173                         ixgbe_init_interrupt_scheme(adapter);
 174                         if (netif_running(netdev))
 175                                 netdev->netdev_ops->ndo_open(netdev);
 176                 }
 177         }
 178 out:
 179         return err;
 180 }
 181
 182 static void ixgbe_dcbnl_get_perm_hw_addr(struct net_device *netdev,
 183                                          u8 *perm_addr)
 184 {
 185         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 186         int i, j;
 187
 188         memset(perm_addr, 0xff, MAX_ADDR_LEN);
 189
 190         for (i = 0; i < netdev->addr_len; i++)
 191                 perm_addr[i] = adapter->hw.mac.perm_addr[i];
 192
 193         switch (adapter->hw.mac.type) {
 194         case ixgbe_mac_82599EB:
 195         case ixgbe_mac_X540:
 196                 for (j = 0; j < netdev->addr_len; j++, i++)
 197                         perm_addr[i] = adapter->hw.mac.san_addr[j];
 198                 break;
 199         default:
 200                 break;
 201         }
 202 }
 203
 204 static void ixgbe_dcbnl_set_pg_tc_cfg_tx(struct net_device *netdev, int tc,
 205                                          u8 prio, u8 bwg_id, u8 bw_pct,
 206                                          u8 up_map)
 207 {
 208         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 209
 210         if (prio != DCB_ATTR_VALUE_UNDEFINED)
 211                 adapter->temp_dcb_cfg.tc_config[tc].path[0].prio_type = prio;
 212         if (bwg_id != DCB_ATTR_VALUE_UNDEFINED)
 213                 adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_id = bwg_id;
 214         if (bw_pct != DCB_ATTR_VALUE_UNDEFINED)
 215                 adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_percent =
 216                         bw_pct;
 217         if (up_map != DCB_ATTR_VALUE_UNDEFINED)
 218                 adapter->temp_dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap =
 219                         up_map;
 220
 221         if ((adapter->temp_dcb_cfg.tc_config[tc].path[0].prio_type !=
 222              adapter->dcb_cfg.tc_config[tc].path[0].prio_type) ||
 223             (adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_id !=
 224              adapter->dcb_cfg.tc_config[tc].path[0].bwg_id) ||
 225             (adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_percent !=
 226              adapter->dcb_cfg.tc_config[tc].path[0].bwg_percent) ||
 227             (adapter->temp_dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap !=
 228              adapter->dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap)) {
 229                 adapter->dcb_set_bitmap |= BIT_PG_TX;
 230                 adapter->dcb_set_bitmap |= BIT_RESETLINK;
 231         }
 232 }
 233
 234 static void ixgbe_dcbnl_set_pg_bwg_cfg_tx(struct net_device *netdev, int bwg_id,
 235                                           u8 bw_pct)
 236 {
 237         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 238
 239         adapter->temp_dcb_cfg.bw_percentage[0][bwg_id] = bw_pct;
 240
 241         if (adapter->temp_dcb_cfg.bw_percentage[0][bwg_id] !=
 242             adapter->dcb_cfg.bw_percentage[0][bwg_id]) {
 243                 adapter->dcb_set_bitmap |= BIT_PG_TX;
 244                 adapter->dcb_set_bitmap |= BIT_RESETLINK;
 245         }
 246 }
 247
 248 static void ixgbe_dcbnl_set_pg_tc_cfg_rx(struct net_device *netdev, int tc,
 249                                          u8 prio, u8 bwg_id, u8 bw_pct,
 250                                          u8 up_map)
 251 {
 252         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 253
 254         if (prio != DCB_ATTR_VALUE_UNDEFINED)
 255                 adapter->temp_dcb_cfg.tc_config[tc].path[1].prio_type = prio;
 256         if (bwg_id != DCB_ATTR_VALUE_UNDEFINED)
 257                 adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_id = bwg_id;
 258         if (bw_pct != DCB_ATTR_VALUE_UNDEFINED)
 259                 adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_percent =
 260                         bw_pct;
 261         if (up_map != DCB_ATTR_VALUE_UNDEFINED)
 262                 adapter->temp_dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap =
 263                         up_map;
 264
 265         if ((adapter->temp_dcb_cfg.tc_config[tc].path[1].prio_type !=
 266              adapter->dcb_cfg.tc_config[tc].path[1].prio_type) ||
 267             (adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_id !=
 268              adapter->dcb_cfg.tc_config[tc].path[1].bwg_id) ||
 269             (adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_percent !=
 270              adapter->dcb_cfg.tc_config[tc].path[1].bwg_percent) ||
 271             (adapter->temp_dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap !=
 272              adapter->dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap)) {
 273                 adapter->dcb_set_bitmap |= BIT_PG_RX;
 274                 adapter->dcb_set_bitmap |= BIT_RESETLINK;
 275         }
 276 }
 277
 278 static void ixgbe_dcbnl_set_pg_bwg_cfg_rx(struct net_device *netdev, int bwg_id,
 279                                           u8 bw_pct)
 280 {
 281         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 282
 283         adapter->temp_dcb_cfg.bw_percentage[1][bwg_id] = bw_pct;
 284
 285         if (adapter->temp_dcb_cfg.bw_percentage[1][bwg_id] !=
 286             adapter->dcb_cfg.bw_percentage[1][bwg_id]) {
 287                 adapter->dcb_set_bitmap |= BIT_PG_RX;
 288                 adapter->dcb_set_bitmap |= BIT_RESETLINK;
 289         }
 290 }
 291
 292 static void ixgbe_dcbnl_get_pg_tc_cfg_tx(struct net_device *netdev, int tc,
 293                                          u8 *prio, u8 *bwg_id, u8 *bw_pct,
 294                                          u8 *up_map)
 295 {
 296         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 297
 298         *prio = adapter->dcb_cfg.tc_config[tc].path[0].prio_type;
 299         *bwg_id = adapter->dcb_cfg.tc_config[tc].path[0].bwg_id;
 300         *bw_pct = adapter->dcb_cfg.tc_config[tc].path[0].bwg_percent;
 301         *up_map = adapter->dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap;
 302 }
 303
 304 static void ixgbe_dcbnl_get_pg_bwg_cfg_tx(struct net_device *netdev, int bwg_id,
 305                                           u8 *bw_pct)
 306 {
 307         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 308
 309         *bw_pct = adapter->dcb_cfg.bw_percentage[0][bwg_id];
 310 }
 311
 312 static void ixgbe_dcbnl_get_pg_tc_cfg_rx(struct net_device *netdev, int tc,
 313                                          u8 *prio, u8 *bwg_id, u8 *bw_pct,
 314                                          u8 *up_map)
 315 {
 316         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 317
 318         *prio = adapter->dcb_cfg.tc_config[tc].path[1].prio_type;
 319         *bwg_id = adapter->dcb_cfg.tc_config[tc].path[1].bwg_id;
 320         *bw_pct = adapter->dcb_cfg.tc_config[tc].path[1].bwg_percent;
 321         *up_map = adapter->dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap;
 322 }
 323
 324 static void ixgbe_dcbnl_get_pg_bwg_cfg_rx(struct net_device *netdev, int bwg_id,
 325                                           u8 *bw_pct)
 326 {
 327         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 328
 329         *bw_pct = adapter->dcb_cfg.bw_percentage[1][bwg_id];
 330 }
 331
 332 static void ixgbe_dcbnl_set_pfc_cfg(struct net_device *netdev, int priority,
 333                                     u8 setting)
 334 {
 335         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 336
 337         adapter->temp_dcb_cfg.tc_config[priority].dcb_pfc = setting;
 338         if (adapter->temp_dcb_cfg.tc_config[priority].dcb_pfc !=
 339             adapter->dcb_cfg.tc_config[priority].dcb_pfc) {
 340                 adapter->dcb_set_bitmap |= BIT_PFC;
 341                 adapter->temp_dcb_cfg.pfc_mode_enable = true;
 342         }
 343 }
 344
 345 static void ixgbe_dcbnl_get_pfc_cfg(struct net_device *netdev, int priority,
 346                                     u8 *setting)
 347 {
 348         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 349
 350         *setting = adapter->dcb_cfg.tc_config[priority].dcb_pfc;
 351 }
 352
 353 static u8 ixgbe_dcbnl_set_all(struct net_device *netdev)
 354 {
 355         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 356         int ret;
 357
 358         if (!adapter->dcb_set_bitmap)
 359                 return DCB_NO_HW_CHG;
 360
 361         ret = ixgbe_copy_dcb_cfg(&adapter->temp_dcb_cfg, &adapter->dcb_cfg,
 362                                  adapter->ring_feature[RING_F_DCB].indices);
 363
 364         if (ret)
 365                 return DCB_NO_HW_CHG;
 366
 367         /*
 368          * Only take down the adapter if the configuration change
 369          * requires a reset.
 370          */
 371         if (adapter->dcb_set_bitmap & BIT_RESETLINK) {
 372                 while (test_and_set_bit(__IXGBE_RESETTING, &adapter->state))
 373                         msleep(1);
 374
 375                 if (adapter->dcb_set_bitmap & BIT_APP_UPCHG) {
 376                         if (netif_running(netdev))
 377                                 netdev->netdev_ops->ndo_stop(netdev);
 378                         ixgbe_clear_interrupt_scheme(adapter);
 379                 } else {
 380                         if (netif_running(netdev))
 381                                 ixgbe_down(adapter);
 382                 }
 383         }
 384
 385         if (adapter->dcb_cfg.pfc_mode_enable) {
 386                 switch (adapter->hw.mac.type) {
 387                 case ixgbe_mac_82599EB:
 388                 case ixgbe_mac_X540:
 389                         if (adapter->hw.fc.current_mode != ixgbe_fc_pfc)
 390                                 adapter->last_lfc_mode =
 391                                                   adapter->hw.fc.current_mode;
 392                         break;
 393                 default:
 394                         break;
 395                 }
 396                 adapter->hw.fc.requested_mode = ixgbe_fc_pfc;
 397         } else {
 398                 switch (adapter->hw.mac.type) {
 399                 case ixgbe_mac_82598EB:
 400                         adapter->hw.fc.requested_mode = ixgbe_fc_none;
 401                         break;
 402                 case ixgbe_mac_82599EB:
 403                 case ixgbe_mac_X540:
 404                         adapter->hw.fc.requested_mode = adapter->last_lfc_mode;
 405                         break;
 406                 default:
 407                         break;
 408                 }
 409         }
 410
 411         if (adapter->dcb_set_bitmap & BIT_RESETLINK) {
 412                 if (adapter->dcb_set_bitmap & BIT_APP_UPCHG) {
 413                         ixgbe_init_interrupt_scheme(adapter);
 414                         if (netif_running(netdev))
 415                                 netdev->netdev_ops->ndo_open(netdev);
 416                 } else {
 417                         if (netif_running(netdev))
 418                                 ixgbe_up(adapter);
 419                 }
 420                 ret = DCB_HW_CHG_RST;
 421         } else if (adapter->dcb_set_bitmap & BIT_PFC) {
 422                 if (adapter->hw.mac.type == ixgbe_mac_82598EB)
 423                         ixgbe_dcb_config_pfc_82598(&adapter->hw,
 424                                                    &adapter->dcb_cfg);
 425                 else if (adapter->hw.mac.type == ixgbe_mac_82599EB)
 426                         ixgbe_dcb_config_pfc_82599(&adapter->hw,
 427                                                    &adapter->dcb_cfg);
 428                 ret = DCB_HW_CHG;
 429         }
 430         if (adapter->dcb_cfg.pfc_mode_enable)
 431                 adapter->hw.fc.current_mode = ixgbe_fc_pfc;
 432
 433         if (adapter->dcb_set_bitmap & BIT_RESETLINK)
 434                 clear_bit(__IXGBE_RESETTING, &adapter->state);
 435         adapter->dcb_set_bitmap = 0x00;
 436         return ret;
 437 }
 438
 439 static u8 ixgbe_dcbnl_getcap(struct net_device *netdev, int capid, u8 *cap)
 440 {
 441         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 442         u8 rval = 0;
 443
 444         if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
 445                 switch (capid) {
 446                 case DCB_CAP_ATTR_PG:
 447                         *cap = true;
 448                         break;
 449                 case DCB_CAP_ATTR_PFC:
 450                         *cap = true;
 451                         break;
 452                 case DCB_CAP_ATTR_UP2TC:
 453                         *cap = false;
 454                         break;
 455                 case DCB_CAP_ATTR_PG_TCS:
 456                         *cap = 0x80;
 457                         break;
 458                 case DCB_CAP_ATTR_PFC_TCS:
 459                         *cap = 0x80;
 460                         break;
 461                 case DCB_CAP_ATTR_GSP:
 462                         *cap = true;
 463                         break;
 464                 case DCB_CAP_ATTR_BCN:
 465                         *cap = false;
 466                         break;
 467                 default:
 468                         rval = -EINVAL;
 469                         break;
 470                 }
 471         } else {
 472                 rval = -EINVAL;
 473         }
 474
 475         return rval;
 476 }
 477
 478 static u8 ixgbe_dcbnl_getnumtcs(struct net_device *netdev, int tcid, u8 *num)
 479 {
 480         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 481         u8 rval = 0;
 482
 483         if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
 484                 switch (tcid) {
 485                 case DCB_NUMTCS_ATTR_PG:
 486                         *num = MAX_TRAFFIC_CLASS;
 487                         break;
 488                 case DCB_NUMTCS_ATTR_PFC:
 489                         *num = MAX_TRAFFIC_CLASS;
 490                         break;
 491                 default:
 492                         rval = -EINVAL;
 493                         break;
 494                 }
 495         } else {
 496                 rval = -EINVAL;
 497         }
 498
 499         return rval;
 500 }
 501
 502 static u8 ixgbe_dcbnl_setnumtcs(struct net_device *netdev, int tcid, u8 num)
 503 {
 504         return -EINVAL;
 505 }
 506
 507 static u8 ixgbe_dcbnl_getpfcstate(struct net_device *netdev)
 508 {
 509         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 510
 511         return adapter->dcb_cfg.pfc_mode_enable;
 512 }
 513
 514 static void ixgbe_dcbnl_setpfcstate(struct net_device *netdev, u8 state)
 515 {
 516         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 517
 518         adapter->temp_dcb_cfg.pfc_mode_enable = state;
 519         if (adapter->temp_dcb_cfg.pfc_mode_enable !=
 520                 adapter->dcb_cfg.pfc_mode_enable)
 521                 adapter->dcb_set_bitmap |= BIT_PFC;
 522 }
 523
 524 /**
 525  * ixgbe_dcbnl_getapp - retrieve the DCBX application user priority
 526  * @netdev : the corresponding netdev
 527  * @idtype : identifies the id as ether type or TCP/UDP port number
 528  * @id: id is either ether type or TCP/UDP port number
 529  *
 530  * Returns : on success, returns a non-zero 802.1p user priority bitmap
 531  * otherwise returns 0 as the invalid user priority bitmap to indicate an
 532  * error.
 533  */
 534 static u8 ixgbe_dcbnl_getapp(struct net_device *netdev, u8 idtype, u16 id)
 535 {
 536         u8 rval = 0;
 537
 538         switch (idtype) {
 539         case DCB_APP_IDTYPE_ETHTYPE:
 540 #ifdef IXGBE_FCOE
 541                 if (id == ETH_P_FCOE)
 542                         rval = ixgbe_fcoe_getapp(netdev_priv(netdev));
 543 #endif
 544                 break;
 545         case DCB_APP_IDTYPE_PORTNUM:
 546                 break;
 547         default:
 548                 break;
 549         }
 550         return rval;
 551 }
 552
 553 /**
 554  * ixgbe_dcbnl_setapp - set the DCBX application user priority
 555  * @netdev : the corresponding netdev
 556  * @idtype : identifies the id as ether type or TCP/UDP port number
 557  * @id: id is either ether type or TCP/UDP port number
 558  * @up: the 802.1p user priority bitmap
 559  *
 560  * Returns : 0 on success or 1 on error
 561  */
 562 static u8 ixgbe_dcbnl_setapp(struct net_device *netdev,
 563                              u8 idtype, u16 id, u8 up)
 564 {
 565         u8 rval = 1;
 566
 567         switch (idtype) {
 568         case DCB_APP_IDTYPE_ETHTYPE:
 569 #ifdef IXGBE_FCOE
 570                 if (id == ETH_P_FCOE) {
 571                         u8 tc;
 572                         struct ixgbe_adapter *adapter;
 573
 574                         adapter = netdev_priv(netdev);
 575                         tc = adapter->fcoe.tc;
 576                         rval = ixgbe_fcoe_setapp(adapter, up);
 577                         if ((!rval) && (tc != adapter->fcoe.tc) &&
 578                             (adapter->flags & IXGBE_FLAG_DCB_ENABLED) &&
 579                             (adapter->flags & IXGBE_FLAG_FCOE_ENABLED)) {
 580                                 adapter->dcb_set_bitmap |= BIT_APP_UPCHG;
 581                                 adapter->dcb_set_bitmap |= BIT_RESETLINK;
 582                         }
 583                 }
 584 #endif
 585                 break;
 586         case DCB_APP_IDTYPE_PORTNUM:
 587                 break;
 588         default:
 589                 break;
 590         }
 591         return rval;
 592 }
 593
 594 const struct dcbnl_rtnl_ops dcbnl_ops = {
 595         .getstate       = ixgbe_dcbnl_get_state,
 596         .setstate       = ixgbe_dcbnl_set_state,
 597         .getpermhwaddr  = ixgbe_dcbnl_get_perm_hw_addr,
 598         .setpgtccfgtx   = ixgbe_dcbnl_set_pg_tc_cfg_tx,
 599         .setpgbwgcfgtx  = ixgbe_dcbnl_set_pg_bwg_cfg_tx,
 600         .setpgtccfgrx   = ixgbe_dcbnl_set_pg_tc_cfg_rx,
 601         .setpgbwgcfgrx  = ixgbe_dcbnl_set_pg_bwg_cfg_rx,
 602         .getpgtccfgtx   = ixgbe_dcbnl_get_pg_tc_cfg_tx,
 603         .getpgbwgcfgtx  = ixgbe_dcbnl_get_pg_bwg_cfg_tx,
 604         .getpgtccfgrx   = ixgbe_dcbnl_get_pg_tc_cfg_rx,
 605         .getpgbwgcfgrx  = ixgbe_dcbnl_get_pg_bwg_cfg_rx,
 606         .setpfccfg      = ixgbe_dcbnl_set_pfc_cfg,
 607         .getpfccfg      = ixgbe_dcbnl_get_pfc_cfg,
 608         .setall         = ixgbe_dcbnl_set_all,
 609         .getcap         = ixgbe_dcbnl_getcap,
 610         .getnumtcs      = ixgbe_dcbnl_getnumtcs,
 611         .setnumtcs      = ixgbe_dcbnl_setnumtcs,
 612         .getpfcstate    = ixgbe_dcbnl_getpfcstate,
 613         .setpfcstate    = ixgbe_dcbnl_setpfcstate,
 614         .getapp         = ixgbe_dcbnl_getapp,
 615         .setapp         = ixgbe_dcbnl_setapp,
 616 };
 617