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                 ixgbe_init_interrupt_scheme(adapter);
 143                 if (netif_running(netdev))
 144                         netdev->netdev_ops->ndo_open(netdev);
 145         } else {
 146                 /* Turn off DCB */
 147                 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
 148                         if (netif_running(netdev))
 149                                 netdev->netdev_ops->ndo_stop(netdev);
 150                         ixgbe_clear_interrupt_scheme(adapter);
 151
 152                         adapter->hw.fc.requested_mode = adapter->last_lfc_mode;
 153                         adapter->temp_dcb_cfg.pfc_mode_enable = false;
 154                         adapter->dcb_cfg.pfc_mode_enable = false;
 155                         adapter->flags &= ~IXGBE_FLAG_DCB_ENABLED;
 156                         adapter->flags |= IXGBE_FLAG_RSS_ENABLED;
 157                         if (adapter->hw.mac.type == ixgbe_mac_82599EB)
 158                                 adapter->flags |= IXGBE_FLAG_FDIR_HASH_CAPABLE;
 159
 160                         ixgbe_init_interrupt_scheme(adapter);
 161                         if (netif_running(netdev))
 162                                 netdev->netdev_ops->ndo_open(netdev);
 163                 }
 164         }
 165 out:
 166         return err;
 167 }
 168
 169 static void ixgbe_dcbnl_get_perm_hw_addr(struct net_device *netdev,
 170                                          u8 *perm_addr)
 171 {
 172         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 173         int i, j;
 174
 175         memset(perm_addr, 0xff, MAX_ADDR_LEN);
 176
 177         for (i = 0; i < netdev->addr_len; i++)
 178                 perm_addr[i] = adapter->hw.mac.perm_addr[i];
 179
 180         if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
 181                 for (j = 0; j < netdev->addr_len; j++, i++)
 182                         perm_addr[i] = adapter->hw.mac.san_addr[j];
 183         }
 184 }
 185
 186 static void ixgbe_dcbnl_set_pg_tc_cfg_tx(struct net_device *netdev, int tc,
 187                                          u8 prio, u8 bwg_id, u8 bw_pct,
 188                                          u8 up_map)
 189 {
 190         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 191
 192         if (prio != DCB_ATTR_VALUE_UNDEFINED)
 193                 adapter->temp_dcb_cfg.tc_config[tc].path[0].prio_type = prio;
 194         if (bwg_id != DCB_ATTR_VALUE_UNDEFINED)
 195                 adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_id = bwg_id;
 196         if (bw_pct != DCB_ATTR_VALUE_UNDEFINED)
 197                 adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_percent =
 198                         bw_pct;
 199         if (up_map != DCB_ATTR_VALUE_UNDEFINED)
 200                 adapter->temp_dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap =
 201                         up_map;
 202
 203         if ((adapter->temp_dcb_cfg.tc_config[tc].path[0].prio_type !=
 204              adapter->dcb_cfg.tc_config[tc].path[0].prio_type) ||
 205             (adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_id !=
 206              adapter->dcb_cfg.tc_config[tc].path[0].bwg_id) ||
 207             (adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_percent !=
 208              adapter->dcb_cfg.tc_config[tc].path[0].bwg_percent) ||
 209             (adapter->temp_dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap !=
 210              adapter->dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap)) {
 211                 adapter->dcb_set_bitmap |= BIT_PG_TX;
 212                 adapter->dcb_set_bitmap |= BIT_RESETLINK;
 213         }
 214 }
 215
 216 static void ixgbe_dcbnl_set_pg_bwg_cfg_tx(struct net_device *netdev, int bwg_id,
 217                                           u8 bw_pct)
 218 {
 219         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 220
 221         adapter->temp_dcb_cfg.bw_percentage[0][bwg_id] = bw_pct;
 222
 223         if (adapter->temp_dcb_cfg.bw_percentage[0][bwg_id] !=
 224             adapter->dcb_cfg.bw_percentage[0][bwg_id]) {
 225                 adapter->dcb_set_bitmap |= BIT_PG_RX;
 226                 adapter->dcb_set_bitmap |= BIT_RESETLINK;
 227         }
 228 }
 229
 230 static void ixgbe_dcbnl_set_pg_tc_cfg_rx(struct net_device *netdev, int tc,
 231                                          u8 prio, u8 bwg_id, u8 bw_pct,
 232                                          u8 up_map)
 233 {
 234         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 235
 236         if (prio != DCB_ATTR_VALUE_UNDEFINED)
 237                 adapter->temp_dcb_cfg.tc_config[tc].path[1].prio_type = prio;
 238         if (bwg_id != DCB_ATTR_VALUE_UNDEFINED)
 239                 adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_id = bwg_id;
 240         if (bw_pct != DCB_ATTR_VALUE_UNDEFINED)
 241                 adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_percent =
 242                         bw_pct;
 243         if (up_map != DCB_ATTR_VALUE_UNDEFINED)
 244                 adapter->temp_dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap =
 245                         up_map;
 246
 247         if ((adapter->temp_dcb_cfg.tc_config[tc].path[1].prio_type !=
 248              adapter->dcb_cfg.tc_config[tc].path[1].prio_type) ||
 249             (adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_id !=
 250              adapter->dcb_cfg.tc_config[tc].path[1].bwg_id) ||
 251             (adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_percent !=
 252              adapter->dcb_cfg.tc_config[tc].path[1].bwg_percent) ||
 253             (adapter->temp_dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap !=
 254              adapter->dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap)) {
 255                 adapter->dcb_set_bitmap |= BIT_PG_RX;
 256                 adapter->dcb_set_bitmap |= BIT_RESETLINK;
 257         }
 258 }
 259
 260 static void ixgbe_dcbnl_set_pg_bwg_cfg_rx(struct net_device *netdev, int bwg_id,
 261                                           u8 bw_pct)
 262 {
 263         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 264
 265         adapter->temp_dcb_cfg.bw_percentage[1][bwg_id] = bw_pct;
 266
 267         if (adapter->temp_dcb_cfg.bw_percentage[1][bwg_id] !=
 268             adapter->dcb_cfg.bw_percentage[1][bwg_id]) {
 269                 adapter->dcb_set_bitmap |= BIT_PG_RX;
 270                 adapter->dcb_set_bitmap |= BIT_RESETLINK;
 271         }
 272 }
 273
 274 static void ixgbe_dcbnl_get_pg_tc_cfg_tx(struct net_device *netdev, int tc,
 275                                          u8 *prio, u8 *bwg_id, u8 *bw_pct,
 276                                          u8 *up_map)
 277 {
 278         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 279
 280         *prio = adapter->dcb_cfg.tc_config[tc].path[0].prio_type;
 281         *bwg_id = adapter->dcb_cfg.tc_config[tc].path[0].bwg_id;
 282         *bw_pct = adapter->dcb_cfg.tc_config[tc].path[0].bwg_percent;
 283         *up_map = adapter->dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap;
 284 }
 285
 286 static void ixgbe_dcbnl_get_pg_bwg_cfg_tx(struct net_device *netdev, int bwg_id,
 287                                           u8 *bw_pct)
 288 {
 289         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 290
 291         *bw_pct = adapter->dcb_cfg.bw_percentage[0][bwg_id];
 292 }
 293
 294 static void ixgbe_dcbnl_get_pg_tc_cfg_rx(struct net_device *netdev, int tc,
 295                                          u8 *prio, u8 *bwg_id, u8 *bw_pct,
 296                                          u8 *up_map)
 297 {
 298         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 299
 300         *prio = adapter->dcb_cfg.tc_config[tc].path[1].prio_type;
 301         *bwg_id = adapter->dcb_cfg.tc_config[tc].path[1].bwg_id;
 302         *bw_pct = adapter->dcb_cfg.tc_config[tc].path[1].bwg_percent;
 303         *up_map = adapter->dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap;
 304 }
 305
 306 static void ixgbe_dcbnl_get_pg_bwg_cfg_rx(struct net_device *netdev, int bwg_id,
 307                                           u8 *bw_pct)
 308 {
 309         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 310
 311         *bw_pct = adapter->dcb_cfg.bw_percentage[1][bwg_id];
 312 }
 313
 314 static void ixgbe_dcbnl_set_pfc_cfg(struct net_device *netdev, int priority,
 315                                     u8 setting)
 316 {
 317         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 318
 319         adapter->temp_dcb_cfg.tc_config[priority].dcb_pfc = setting;
 320         if (adapter->temp_dcb_cfg.tc_config[priority].dcb_pfc !=
 321             adapter->dcb_cfg.tc_config[priority].dcb_pfc) {
 322                 adapter->dcb_set_bitmap |= BIT_PFC;
 323                 adapter->temp_dcb_cfg.pfc_mode_enable = true;
 324         }
 325 }
 326
 327 static void ixgbe_dcbnl_get_pfc_cfg(struct net_device *netdev, int priority,
 328                                     u8 *setting)
 329 {
 330         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 331
 332         *setting = adapter->dcb_cfg.tc_config[priority].dcb_pfc;
 333 }
 334
 335 static u8 ixgbe_dcbnl_set_all(struct net_device *netdev)
 336 {
 337         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 338         int ret;
 339
 340         if (!adapter->dcb_set_bitmap)
 341                 return DCB_NO_HW_CHG;
 342
 343         /*
 344          * Only take down the adapter if the configuration change
 345          * requires a reset.
 346          */
 347         if (adapter->dcb_set_bitmap & BIT_RESETLINK) {
 348                 while (test_and_set_bit(__IXGBE_RESETTING, &adapter->state))
 349                         msleep(1);
 350
 351                 if (netif_running(netdev))
 352                         ixgbe_down(adapter);
 353         }
 354
 355         ret = ixgbe_copy_dcb_cfg(&adapter->temp_dcb_cfg, &adapter->dcb_cfg,
 356                                  adapter->ring_feature[RING_F_DCB].indices);
 357         if (ret) {
 358                 if (adapter->dcb_set_bitmap & BIT_RESETLINK)
 359                         clear_bit(__IXGBE_RESETTING, &adapter->state);
 360                 return DCB_NO_HW_CHG;
 361         }
 362
 363         if (adapter->dcb_cfg.pfc_mode_enable) {
 364                 if ((adapter->hw.mac.type != ixgbe_mac_82598EB) &&
 365                         (adapter->hw.fc.current_mode != ixgbe_fc_pfc))
 366                         adapter->last_lfc_mode = adapter->hw.fc.current_mode;
 367                 adapter->hw.fc.requested_mode = ixgbe_fc_pfc;
 368         } else {
 369                 if (adapter->hw.mac.type != ixgbe_mac_82598EB)
 370                         adapter->hw.fc.requested_mode = adapter->last_lfc_mode;
 371                 else
 372                         adapter->hw.fc.requested_mode = ixgbe_fc_none;
 373         }
 374
 375         if (adapter->dcb_set_bitmap & BIT_RESETLINK) {
 376                 if (netif_running(netdev))
 377                         ixgbe_up(adapter);
 378                 ret = DCB_HW_CHG_RST;
 379         } else if (adapter->dcb_set_bitmap & BIT_PFC) {
 380                 if (adapter->hw.mac.type == ixgbe_mac_82598EB)
 381                         ixgbe_dcb_config_pfc_82598(&adapter->hw,
 382                                                    &adapter->dcb_cfg);
 383                 else if (adapter->hw.mac.type == ixgbe_mac_82599EB)
 384                         ixgbe_dcb_config_pfc_82599(&adapter->hw,
 385                                                    &adapter->dcb_cfg);
 386                 ret = DCB_HW_CHG;
 387         }
 388         if (adapter->dcb_cfg.pfc_mode_enable)
 389                 adapter->hw.fc.current_mode = ixgbe_fc_pfc;
 390
 391         if (adapter->dcb_set_bitmap & BIT_RESETLINK)
 392                 clear_bit(__IXGBE_RESETTING, &adapter->state);
 393         adapter->dcb_set_bitmap = 0x00;
 394         return ret;
 395 }
 396
 397 static u8 ixgbe_dcbnl_getcap(struct net_device *netdev, int capid, u8 *cap)
 398 {
 399         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 400         u8 rval = 0;
 401
 402         if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
 403                 switch (capid) {
 404                 case DCB_CAP_ATTR_PG:
 405                         *cap = true;
 406                         break;
 407                 case DCB_CAP_ATTR_PFC:
 408                         *cap = true;
 409                         break;
 410                 case DCB_CAP_ATTR_UP2TC:
 411                         *cap = false;
 412                         break;
 413                 case DCB_CAP_ATTR_PG_TCS:
 414                         *cap = 0x80;
 415                         break;
 416                 case DCB_CAP_ATTR_PFC_TCS:
 417                         *cap = 0x80;
 418                         break;
 419                 case DCB_CAP_ATTR_GSP:
 420                         *cap = true;
 421                         break;
 422                 case DCB_CAP_ATTR_BCN:
 423                         *cap = false;
 424                         break;
 425                 default:
 426                         rval = -EINVAL;
 427                         break;
 428                 }
 429         } else {
 430                 rval = -EINVAL;
 431         }
 432
 433         return rval;
 434 }
 435
 436 static u8 ixgbe_dcbnl_getnumtcs(struct net_device *netdev, int tcid, u8 *num)
 437 {
 438         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 439         u8 rval = 0;
 440
 441         if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
 442                 switch (tcid) {
 443                 case DCB_NUMTCS_ATTR_PG:
 444                         *num = MAX_TRAFFIC_CLASS;
 445                         break;
 446                 case DCB_NUMTCS_ATTR_PFC:
 447                         *num = MAX_TRAFFIC_CLASS;
 448                         break;
 449                 default:
 450                         rval = -EINVAL;
 451                         break;
 452                 }
 453         } else {
 454                 rval = -EINVAL;
 455         }
 456
 457         return rval;
 458 }
 459
 460 static u8 ixgbe_dcbnl_setnumtcs(struct net_device *netdev, int tcid, u8 num)
 461 {
 462         return -EINVAL;
 463 }
 464
 465 static u8 ixgbe_dcbnl_getpfcstate(struct net_device *netdev)
 466 {
 467         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 468
 469         return adapter->dcb_cfg.pfc_mode_enable;
 470 }
 471
 472 static void ixgbe_dcbnl_setpfcstate(struct net_device *netdev, u8 state)
 473 {
 474         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 475
 476         adapter->temp_dcb_cfg.pfc_mode_enable = state;
 477         if (adapter->temp_dcb_cfg.pfc_mode_enable !=
 478                 adapter->dcb_cfg.pfc_mode_enable)
 479                 adapter->dcb_set_bitmap |= BIT_PFC;
 480         return;
 481 }
 482
 483 /**
 484  * ixgbe_dcbnl_getapp - retrieve the DCBX application user priority
 485  * @netdev : the corresponding netdev
 486  * @idtype : identifies the id as ether type or TCP/UDP port number
 487  * @id: id is either ether type or TCP/UDP port number
 488  *
 489  * Returns : on success, returns a non-zero 802.1p user priority bitmap
 490  * otherwise returns 0 as the invalid user priority bitmap to indicate an
 491  * error.
 492  */
 493 static u8 ixgbe_dcbnl_getapp(struct net_device *netdev, u8 idtype, u16 id)
 494 {
 495         u8 rval = 0;
 496
 497         switch (idtype) {
 498         case DCB_APP_IDTYPE_ETHTYPE:
 499 #ifdef IXGBE_FCOE
 500                 if (id == ETH_P_FCOE)
 501                         rval = ixgbe_fcoe_getapp(netdev_priv(netdev));
 502 #endif
 503                 break;
 504         case DCB_APP_IDTYPE_PORTNUM:
 505                 break;
 506         default:
 507                 break;
 508         }
 509         return rval;
 510 }
 511
 512 /**
 513  * ixgbe_dcbnl_setapp - set the DCBX application user priority
 514  * @netdev : the corresponding netdev
 515  * @idtype : identifies the id as ether type or TCP/UDP port number
 516  * @id: id is either ether type or TCP/UDP port number
 517  * @up: the 802.1p user priority bitmap
 518  *
 519  * Returns : 0 on success or 1 on error
 520  */
 521 static u8 ixgbe_dcbnl_setapp(struct net_device *netdev,
 522                              u8 idtype, u16 id, u8 up)
 523 {
 524         u8 rval = 1;
 525
 526         switch (idtype) {
 527         case DCB_APP_IDTYPE_ETHTYPE:
 528 #ifdef IXGBE_FCOE
 529                 if (id == ETH_P_FCOE)
 530                         rval = ixgbe_fcoe_setapp(netdev_priv(netdev), up);
 531 #endif
 532                 break;
 533         case DCB_APP_IDTYPE_PORTNUM:
 534                 break;
 535         default:
 536                 break;
 537         }
 538         return rval;
 539 }
 540
 541 struct dcbnl_rtnl_ops dcbnl_ops = {
 542         .getstate       = ixgbe_dcbnl_get_state,
 543         .setstate       = ixgbe_dcbnl_set_state,
 544         .getpermhwaddr  = ixgbe_dcbnl_get_perm_hw_addr,
 545         .setpgtccfgtx   = ixgbe_dcbnl_set_pg_tc_cfg_tx,
 546         .setpgbwgcfgtx  = ixgbe_dcbnl_set_pg_bwg_cfg_tx,
 547         .setpgtccfgrx   = ixgbe_dcbnl_set_pg_tc_cfg_rx,
 548         .setpgbwgcfgrx  = ixgbe_dcbnl_set_pg_bwg_cfg_rx,
 549         .getpgtccfgtx   = ixgbe_dcbnl_get_pg_tc_cfg_tx,
 550         .getpgbwgcfgtx  = ixgbe_dcbnl_get_pg_bwg_cfg_tx,
 551         .getpgtccfgrx   = ixgbe_dcbnl_get_pg_tc_cfg_rx,
 552         .getpgbwgcfgrx  = ixgbe_dcbnl_get_pg_bwg_cfg_rx,
 553         .setpfccfg      = ixgbe_dcbnl_set_pfc_cfg,
 554         .getpfccfg      = ixgbe_dcbnl_get_pfc_cfg,
 555         .setall         = ixgbe_dcbnl_set_all,
 556         .getcap         = ixgbe_dcbnl_getcap,
 557         .getnumtcs      = ixgbe_dcbnl_getnumtcs,
 558         .setnumtcs      = ixgbe_dcbnl_setnumtcs,
 559         .getpfcstate    = ixgbe_dcbnl_getpfcstate,
 560         .setpfcstate    = ixgbe_dcbnl_setpfcstate,
 561         .getapp         = ixgbe_dcbnl_getapp,
 562         .setapp         = ixgbe_dcbnl_setapp,
 563 };
 564