drivers/net/ethernet/intel/ixgbe/ixgbe_dcb_nl.c

   1 /*******************************************************************************
   2
   3   Intel 10 Gigabit PCI Express Linux driver
   4   Copyright(c) 1999 - 2012 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         u8 prio_tc[MAX_USER_PRIORITY] = {0};
 116         int i;
 117         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 118
 119         /* Fail command if not in CEE mode */
 120         if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE))
 121                 return 1;
 122
 123         /* verify there is something to do, if not then exit */
 124         if (!!state != !(adapter->flags & IXGBE_FLAG_DCB_ENABLED))
 125                 return err;
 126
 127         if (state > 0) {
 128                 err = ixgbe_setup_tc(netdev, adapter->dcb_cfg.num_tcs.pg_tcs);
 129                 ixgbe_dcb_unpack_map(&adapter->dcb_cfg, DCB_TX_CONFIG, prio_tc);
 130         } else {
 131                 err = ixgbe_setup_tc(netdev, 0);
 132         }
 133
 134         for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
 135                 netdev_set_prio_tc_map(netdev, i, prio_tc[i]);
 136
 137         return err;
 138 }
 139
 140 static void ixgbe_dcbnl_get_perm_hw_addr(struct net_device *netdev,
 141                                          u8 *perm_addr)
 142 {
 143         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 144         int i, j;
 145
 146         memset(perm_addr, 0xff, MAX_ADDR_LEN);
 147
 148         for (i = 0; i < netdev->addr_len; i++)
 149                 perm_addr[i] = adapter->hw.mac.perm_addr[i];
 150
 151         switch (adapter->hw.mac.type) {
 152         case ixgbe_mac_82599EB:
 153         case ixgbe_mac_X540:
 154                 for (j = 0; j < netdev->addr_len; j++, i++)
 155                         perm_addr[i] = adapter->hw.mac.san_addr[j];
 156                 break;
 157         default:
 158                 break;
 159         }
 160 }
 161
 162 static void ixgbe_dcbnl_set_pg_tc_cfg_tx(struct net_device *netdev, int tc,
 163                                          u8 prio, u8 bwg_id, u8 bw_pct,
 164                                          u8 up_map)
 165 {
 166         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 167
 168         if (prio != DCB_ATTR_VALUE_UNDEFINED)
 169                 adapter->temp_dcb_cfg.tc_config[tc].path[0].prio_type = prio;
 170         if (bwg_id != DCB_ATTR_VALUE_UNDEFINED)
 171                 adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_id = bwg_id;
 172         if (bw_pct != DCB_ATTR_VALUE_UNDEFINED)
 173                 adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_percent =
 174                         bw_pct;
 175         if (up_map != DCB_ATTR_VALUE_UNDEFINED)
 176                 adapter->temp_dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap =
 177                         up_map;
 178
 179         if ((adapter->temp_dcb_cfg.tc_config[tc].path[0].prio_type !=
 180              adapter->dcb_cfg.tc_config[tc].path[0].prio_type) ||
 181             (adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_id !=
 182              adapter->dcb_cfg.tc_config[tc].path[0].bwg_id) ||
 183             (adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_percent !=
 184              adapter->dcb_cfg.tc_config[tc].path[0].bwg_percent) ||
 185             (adapter->temp_dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap !=
 186              adapter->dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap))
 187                 adapter->dcb_set_bitmap |= BIT_PG_TX;
 188
 189         if (adapter->temp_dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap !=
 190              adapter->dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap)
 191                 adapter->dcb_set_bitmap |= BIT_PFC | BIT_APP_UPCHG;
 192 }
 193
 194 static void ixgbe_dcbnl_set_pg_bwg_cfg_tx(struct net_device *netdev, int bwg_id,
 195                                           u8 bw_pct)
 196 {
 197         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 198
 199         adapter->temp_dcb_cfg.bw_percentage[0][bwg_id] = bw_pct;
 200
 201         if (adapter->temp_dcb_cfg.bw_percentage[0][bwg_id] !=
 202             adapter->dcb_cfg.bw_percentage[0][bwg_id])
 203                 adapter->dcb_set_bitmap |= BIT_PG_TX;
 204 }
 205
 206 static void ixgbe_dcbnl_set_pg_tc_cfg_rx(struct net_device *netdev, int tc,
 207                                          u8 prio, u8 bwg_id, u8 bw_pct,
 208                                          u8 up_map)
 209 {
 210         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 211
 212         if (prio != DCB_ATTR_VALUE_UNDEFINED)
 213                 adapter->temp_dcb_cfg.tc_config[tc].path[1].prio_type = prio;
 214         if (bwg_id != DCB_ATTR_VALUE_UNDEFINED)
 215                 adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_id = bwg_id;
 216         if (bw_pct != DCB_ATTR_VALUE_UNDEFINED)
 217                 adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_percent =
 218                         bw_pct;
 219         if (up_map != DCB_ATTR_VALUE_UNDEFINED)
 220                 adapter->temp_dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap =
 221                         up_map;
 222
 223         if ((adapter->temp_dcb_cfg.tc_config[tc].path[1].prio_type !=
 224              adapter->dcb_cfg.tc_config[tc].path[1].prio_type) ||
 225             (adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_id !=
 226              adapter->dcb_cfg.tc_config[tc].path[1].bwg_id) ||
 227             (adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_percent !=
 228              adapter->dcb_cfg.tc_config[tc].path[1].bwg_percent) ||
 229             (adapter->temp_dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap !=
 230              adapter->dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap))
 231                 adapter->dcb_set_bitmap |= BIT_PG_RX;
 232
 233         if (adapter->temp_dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap !=
 234              adapter->dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap)
 235                 adapter->dcb_set_bitmap |= BIT_PFC;
 236 }
 237
 238 static void ixgbe_dcbnl_set_pg_bwg_cfg_rx(struct net_device *netdev, int bwg_id,
 239                                           u8 bw_pct)
 240 {
 241         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 242
 243         adapter->temp_dcb_cfg.bw_percentage[1][bwg_id] = bw_pct;
 244
 245         if (adapter->temp_dcb_cfg.bw_percentage[1][bwg_id] !=
 246             adapter->dcb_cfg.bw_percentage[1][bwg_id])
 247                 adapter->dcb_set_bitmap |= BIT_PG_RX;
 248 }
 249
 250 static void ixgbe_dcbnl_get_pg_tc_cfg_tx(struct net_device *netdev, int tc,
 251                                          u8 *prio, u8 *bwg_id, u8 *bw_pct,
 252                                          u8 *up_map)
 253 {
 254         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 255
 256         *prio = adapter->dcb_cfg.tc_config[tc].path[0].prio_type;
 257         *bwg_id = adapter->dcb_cfg.tc_config[tc].path[0].bwg_id;
 258         *bw_pct = adapter->dcb_cfg.tc_config[tc].path[0].bwg_percent;
 259         *up_map = adapter->dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap;
 260 }
 261
 262 static void ixgbe_dcbnl_get_pg_bwg_cfg_tx(struct net_device *netdev, int bwg_id,
 263                                           u8 *bw_pct)
 264 {
 265         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 266
 267         *bw_pct = adapter->dcb_cfg.bw_percentage[0][bwg_id];
 268 }
 269
 270 static void ixgbe_dcbnl_get_pg_tc_cfg_rx(struct net_device *netdev, int tc,
 271                                          u8 *prio, u8 *bwg_id, u8 *bw_pct,
 272                                          u8 *up_map)
 273 {
 274         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 275
 276         *prio = adapter->dcb_cfg.tc_config[tc].path[1].prio_type;
 277         *bwg_id = adapter->dcb_cfg.tc_config[tc].path[1].bwg_id;
 278         *bw_pct = adapter->dcb_cfg.tc_config[tc].path[1].bwg_percent;
 279         *up_map = adapter->dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap;
 280 }
 281
 282 static void ixgbe_dcbnl_get_pg_bwg_cfg_rx(struct net_device *netdev, int bwg_id,
 283                                           u8 *bw_pct)
 284 {
 285         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 286
 287         *bw_pct = adapter->dcb_cfg.bw_percentage[1][bwg_id];
 288 }
 289
 290 static void ixgbe_dcbnl_set_pfc_cfg(struct net_device *netdev, int priority,
 291                                     u8 setting)
 292 {
 293         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 294
 295         adapter->temp_dcb_cfg.tc_config[priority].dcb_pfc = setting;
 296         if (adapter->temp_dcb_cfg.tc_config[priority].dcb_pfc !=
 297             adapter->dcb_cfg.tc_config[priority].dcb_pfc) {
 298                 adapter->dcb_set_bitmap |= BIT_PFC;
 299                 adapter->temp_dcb_cfg.pfc_mode_enable = true;
 300         }
 301 }
 302
 303 static void ixgbe_dcbnl_get_pfc_cfg(struct net_device *netdev, int priority,
 304                                     u8 *setting)
 305 {
 306         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 307
 308         *setting = adapter->dcb_cfg.tc_config[priority].dcb_pfc;
 309 }
 310
 311 #ifdef IXGBE_FCOE
 312 static void ixgbe_dcbnl_devreset(struct net_device *dev)
 313 {
 314         struct ixgbe_adapter *adapter = netdev_priv(dev);
 315
 316         while (test_and_set_bit(__IXGBE_RESETTING, &adapter->state))
 317                 usleep_range(1000, 2000);
 318
 319         if (netif_running(dev))
 320                 dev->netdev_ops->ndo_stop(dev);
 321
 322         ixgbe_clear_interrupt_scheme(adapter);
 323         ixgbe_init_interrupt_scheme(adapter);
 324
 325         if (netif_running(dev))
 326                 dev->netdev_ops->ndo_open(dev);
 327
 328         clear_bit(__IXGBE_RESETTING, &adapter->state);
 329 }
 330 #endif
 331
 332 static u8 ixgbe_dcbnl_set_all(struct net_device *netdev)
 333 {
 334         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 335         int ret, i;
 336 #ifdef IXGBE_FCOE
 337         struct dcb_app app = {
 338                               .selector = DCB_APP_IDTYPE_ETHTYPE,
 339                               .protocol = ETH_P_FCOE,
 340                              };
 341         u8 up;
 342
 343         /* In IEEE mode, use the IEEE Ethertype selector value */
 344         if (adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE) {
 345                 app.selector = IEEE_8021QAZ_APP_SEL_ETHERTYPE;
 346                 up = dcb_ieee_getapp_mask(netdev, &app);
 347         } else {
 348                 up = dcb_getapp(netdev, &app);
 349         }
 350 #endif
 351
 352         /* Fail command if not in CEE mode */
 353         if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE))
 354                 return 1;
 355
 356         ret = ixgbe_copy_dcb_cfg(&adapter->temp_dcb_cfg, &adapter->dcb_cfg,
 357                                  MAX_TRAFFIC_CLASS);
 358         if (ret)
 359                 return DCB_NO_HW_CHG;
 360
 361         if (adapter->dcb_cfg.pfc_mode_enable) {
 362                 switch (adapter->hw.mac.type) {
 363                 case ixgbe_mac_82599EB:
 364                 case ixgbe_mac_X540:
 365                         if (adapter->hw.fc.current_mode != ixgbe_fc_pfc)
 366                                 adapter->last_lfc_mode =
 367                                                   adapter->hw.fc.current_mode;
 368                         break;
 369                 default:
 370                         break;
 371                 }
 372                 adapter->hw.fc.requested_mode = ixgbe_fc_pfc;
 373         } else {
 374                 switch (adapter->hw.mac.type) {
 375                 case ixgbe_mac_82598EB:
 376                         adapter->hw.fc.requested_mode = ixgbe_fc_none;
 377                         break;
 378                 case ixgbe_mac_82599EB:
 379                 case ixgbe_mac_X540:
 380                         adapter->hw.fc.requested_mode = adapter->last_lfc_mode;
 381                         break;
 382                 default:
 383                         break;
 384                 }
 385         }
 386
 387         if (adapter->dcb_set_bitmap & (BIT_PG_TX|BIT_PG_RX)) {
 388                 u16 refill[MAX_TRAFFIC_CLASS], max[MAX_TRAFFIC_CLASS];
 389                 u8 bwg_id[MAX_TRAFFIC_CLASS], prio_type[MAX_TRAFFIC_CLASS];
 390                 /* Priority to TC mapping in CEE case default to 1:1 */
 391                 u8 prio_tc[MAX_USER_PRIORITY];
 392                 int max_frame = adapter->netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
 393
 394 #ifdef IXGBE_FCOE
 395                 if (adapter->netdev->features & NETIF_F_FCOE_MTU)
 396                         max_frame = max(max_frame, IXGBE_FCOE_JUMBO_FRAME_SIZE);
 397 #endif
 398
 399                 ixgbe_dcb_calculate_tc_credits(&adapter->hw, &adapter->dcb_cfg,
 400                                                max_frame, DCB_TX_CONFIG);
 401                 ixgbe_dcb_calculate_tc_credits(&adapter->hw, &adapter->dcb_cfg,
 402                                                max_frame, DCB_RX_CONFIG);
 403
 404                 ixgbe_dcb_unpack_refill(&adapter->dcb_cfg,
 405                                         DCB_TX_CONFIG, refill);
 406                 ixgbe_dcb_unpack_max(&adapter->dcb_cfg, max);
 407                 ixgbe_dcb_unpack_bwgid(&adapter->dcb_cfg,
 408                                        DCB_TX_CONFIG, bwg_id);
 409                 ixgbe_dcb_unpack_prio(&adapter->dcb_cfg,
 410                                       DCB_TX_CONFIG, prio_type);
 411                 ixgbe_dcb_unpack_map(&adapter->dcb_cfg,
 412                                      DCB_TX_CONFIG, prio_tc);
 413
 414                 ixgbe_dcb_hw_ets_config(&adapter->hw, refill, max,
 415                                         bwg_id, prio_type, prio_tc);
 416
 417                 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
 418                         netdev_set_prio_tc_map(netdev, i, prio_tc[i]);
 419         }
 420
 421         if (adapter->dcb_set_bitmap & BIT_PFC) {
 422                 u8 pfc_en;
 423                 u8 prio_tc[MAX_USER_PRIORITY];
 424
 425                 ixgbe_dcb_unpack_map(&adapter->dcb_cfg,
 426                                      DCB_TX_CONFIG, prio_tc);
 427                 ixgbe_dcb_unpack_pfc(&adapter->dcb_cfg, &pfc_en);
 428                 ixgbe_dcb_hw_pfc_config(&adapter->hw, pfc_en, prio_tc);
 429                 ret = DCB_HW_CHG;
 430         }
 431
 432         if (adapter->dcb_cfg.pfc_mode_enable)
 433                 adapter->hw.fc.current_mode = ixgbe_fc_pfc;
 434
 435 #ifdef IXGBE_FCOE
 436         /* Reprogam FCoE hardware offloads when the traffic class
 437          * FCoE is using changes. This happens if the APP info
 438          * changes or the up2tc mapping is updated.
 439          */
 440         if ((up && !(up & (1 << adapter->fcoe.up))) ||
 441             (adapter->dcb_set_bitmap & BIT_APP_UPCHG)) {
 442                 adapter->fcoe.up = ffs(up) - 1;
 443                 ixgbe_dcbnl_devreset(netdev);
 444                 ret = DCB_HW_CHG_RST;
 445         }
 446 #endif
 447
 448         adapter->dcb_set_bitmap = 0x00;
 449         return ret;
 450 }
 451
 452 static u8 ixgbe_dcbnl_getcap(struct net_device *netdev, int capid, u8 *cap)
 453 {
 454         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 455
 456         switch (capid) {
 457         case DCB_CAP_ATTR_PG:
 458                 *cap = true;
 459                 break;
 460         case DCB_CAP_ATTR_PFC:
 461                 *cap = true;
 462                 break;
 463         case DCB_CAP_ATTR_UP2TC:
 464                 *cap = false;
 465                 break;
 466         case DCB_CAP_ATTR_PG_TCS:
 467                 *cap = 0x80;
 468                 break;
 469         case DCB_CAP_ATTR_PFC_TCS:
 470                 *cap = 0x80;
 471                 break;
 472         case DCB_CAP_ATTR_GSP:
 473                 *cap = true;
 474                 break;
 475         case DCB_CAP_ATTR_BCN:
 476                 *cap = false;
 477                 break;
 478         case DCB_CAP_ATTR_DCBX:
 479                 *cap = adapter->dcbx_cap;
 480                 break;
 481         default:
 482                 *cap = false;
 483                 break;
 484         }
 485
 486         return 0;
 487 }
 488
 489 static u8 ixgbe_dcbnl_getnumtcs(struct net_device *netdev, int tcid, u8 *num)
 490 {
 491         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 492         u8 rval = 0;
 493
 494         if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
 495                 switch (tcid) {
 496                 case DCB_NUMTCS_ATTR_PG:
 497                         *num = adapter->dcb_cfg.num_tcs.pg_tcs;
 498                         break;
 499                 case DCB_NUMTCS_ATTR_PFC:
 500                         *num = adapter->dcb_cfg.num_tcs.pfc_tcs;
 501                         break;
 502                 default:
 503                         rval = -EINVAL;
 504                         break;
 505                 }
 506         } else {
 507                 rval = -EINVAL;
 508         }
 509
 510         return rval;
 511 }
 512
 513 static u8 ixgbe_dcbnl_setnumtcs(struct net_device *netdev, int tcid, u8 num)
 514 {
 515         return -EINVAL;
 516 }
 517
 518 static u8 ixgbe_dcbnl_getpfcstate(struct net_device *netdev)
 519 {
 520         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 521
 522         return adapter->dcb_cfg.pfc_mode_enable;
 523 }
 524
 525 static void ixgbe_dcbnl_setpfcstate(struct net_device *netdev, u8 state)
 526 {
 527         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 528
 529         adapter->temp_dcb_cfg.pfc_mode_enable = state;
 530         if (adapter->temp_dcb_cfg.pfc_mode_enable !=
 531                 adapter->dcb_cfg.pfc_mode_enable)
 532                 adapter->dcb_set_bitmap |= BIT_PFC;
 533 }
 534
 535 /**
 536  * ixgbe_dcbnl_getapp - retrieve the DCBX application user priority
 537  * @netdev : the corresponding netdev
 538  * @idtype : identifies the id as ether type or TCP/UDP port number
 539  * @id: id is either ether type or TCP/UDP port number
 540  *
 541  * Returns : on success, returns a non-zero 802.1p user priority bitmap
 542  * otherwise returns 0 as the invalid user priority bitmap to indicate an
 543  * error.
 544  */
 545 static u8 ixgbe_dcbnl_getapp(struct net_device *netdev, u8 idtype, u16 id)
 546 {
 547         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 548         struct dcb_app app = {
 549                                 .selector = idtype,
 550                                 .protocol = id,
 551                              };
 552
 553         if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE))
 554                 return 0;
 555
 556         return dcb_getapp(netdev, &app);
 557 }
 558
 559 static int ixgbe_dcbnl_ieee_getets(struct net_device *dev,
 560                                    struct ieee_ets *ets)
 561 {
 562         struct ixgbe_adapter *adapter = netdev_priv(dev);
 563         struct ieee_ets *my_ets = adapter->ixgbe_ieee_ets;
 564
 565         ets->ets_cap = adapter->dcb_cfg.num_tcs.pg_tcs;
 566
 567         /* No IEEE PFC settings available */
 568         if (!my_ets)
 569                 return 0;
 570
 571         ets->cbs = my_ets->cbs;
 572         memcpy(ets->tc_tx_bw, my_ets->tc_tx_bw, sizeof(ets->tc_tx_bw));
 573         memcpy(ets->tc_rx_bw, my_ets->tc_rx_bw, sizeof(ets->tc_rx_bw));
 574         memcpy(ets->tc_tsa, my_ets->tc_tsa, sizeof(ets->tc_tsa));
 575         memcpy(ets->prio_tc, my_ets->prio_tc, sizeof(ets->prio_tc));
 576         return 0;
 577 }
 578
 579 static int ixgbe_dcbnl_ieee_setets(struct net_device *dev,
 580                                    struct ieee_ets *ets)
 581 {
 582         struct ixgbe_adapter *adapter = netdev_priv(dev);
 583         int max_frame = dev->mtu + ETH_HLEN + ETH_FCS_LEN;
 584         int i;
 585         __u8 max_tc = 0;
 586
 587         if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
 588                 return -EINVAL;
 589
 590         if (!adapter->ixgbe_ieee_ets) {
 591                 adapter->ixgbe_ieee_ets = kmalloc(sizeof(struct ieee_ets),
 592                                                   GFP_KERNEL);
 593                 if (!adapter->ixgbe_ieee_ets)
 594                         return -ENOMEM;
 595         }
 596
 597         memcpy(adapter->ixgbe_ieee_ets, ets, sizeof(*adapter->ixgbe_ieee_ets));
 598
 599         for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
 600                 if (ets->prio_tc[i] > max_tc)
 601                         max_tc = ets->prio_tc[i];
 602         }
 603
 604         if (max_tc)
 605                 max_tc++;
 606
 607         if (max_tc > adapter->dcb_cfg.num_tcs.pg_tcs)
 608                 return -EINVAL;
 609
 610         if (max_tc != netdev_get_num_tc(dev))
 611                 ixgbe_setup_tc(dev, max_tc);
 612
 613         for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
 614                 netdev_set_prio_tc_map(dev, i, ets->prio_tc[i]);
 615
 616         return ixgbe_dcb_hw_ets(&adapter->hw, ets, max_frame);
 617 }
 618
 619 static int ixgbe_dcbnl_ieee_getpfc(struct net_device *dev,
 620                                    struct ieee_pfc *pfc)
 621 {
 622         struct ixgbe_adapter *adapter = netdev_priv(dev);
 623         struct ieee_pfc *my_pfc = adapter->ixgbe_ieee_pfc;
 624         int i;
 625
 626         pfc->pfc_cap = adapter->dcb_cfg.num_tcs.pfc_tcs;
 627
 628         /* No IEEE PFC settings available */
 629         if (!my_pfc)
 630                 return 0;
 631
 632         pfc->pfc_en = my_pfc->pfc_en;
 633         pfc->mbc = my_pfc->mbc;
 634         pfc->delay = my_pfc->delay;
 635
 636         for (i = 0; i < MAX_TRAFFIC_CLASS; i++) {
 637                 pfc->requests[i] = adapter->stats.pxoffrxc[i];
 638                 pfc->indications[i] = adapter->stats.pxofftxc[i];
 639         }
 640
 641         return 0;
 642 }
 643
 644 static int ixgbe_dcbnl_ieee_setpfc(struct net_device *dev,
 645                                    struct ieee_pfc *pfc)
 646 {
 647         struct ixgbe_adapter *adapter = netdev_priv(dev);
 648         u8 *prio_tc;
 649
 650         if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
 651                 return -EINVAL;
 652
 653         if (!adapter->ixgbe_ieee_pfc) {
 654                 adapter->ixgbe_ieee_pfc = kmalloc(sizeof(struct ieee_pfc),
 655                                                   GFP_KERNEL);
 656                 if (!adapter->ixgbe_ieee_pfc)
 657                         return -ENOMEM;
 658         }
 659
 660         prio_tc = adapter->ixgbe_ieee_ets->prio_tc;
 661         memcpy(adapter->ixgbe_ieee_pfc, pfc, sizeof(*adapter->ixgbe_ieee_pfc));
 662         return ixgbe_dcb_hw_pfc_config(&adapter->hw, pfc->pfc_en, prio_tc);
 663 }
 664
 665 static int ixgbe_dcbnl_ieee_setapp(struct net_device *dev,
 666                                    struct dcb_app *app)
 667 {
 668         struct ixgbe_adapter *adapter = netdev_priv(dev);
 669         int err = -EINVAL;
 670
 671         if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
 672                 return err;
 673
 674         err = dcb_ieee_setapp(dev, app);
 675
 676 #ifdef IXGBE_FCOE
 677         if (!err && app->selector == IEEE_8021QAZ_APP_SEL_ETHERTYPE &&
 678             app->protocol == ETH_P_FCOE) {
 679                 u8 app_mask = dcb_ieee_getapp_mask(dev, app);
 680
 681                 if (app_mask & (1 << adapter->fcoe.up))
 682                         return err;
 683
 684                 adapter->fcoe.up = app->priority;
 685                 ixgbe_dcbnl_devreset(dev);
 686         }
 687 #endif
 688         return 0;
 689 }
 690
 691 static int ixgbe_dcbnl_ieee_delapp(struct net_device *dev,
 692                                    struct dcb_app *app)
 693 {
 694         struct ixgbe_adapter *adapter = netdev_priv(dev);
 695         int err;
 696
 697         if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
 698                 return -EINVAL;
 699
 700         err = dcb_ieee_delapp(dev, app);
 701
 702 #ifdef IXGBE_FCOE
 703         if (!err && app->selector == IEEE_8021QAZ_APP_SEL_ETHERTYPE &&
 704             app->protocol == ETH_P_FCOE) {
 705                 u8 app_mask = dcb_ieee_getapp_mask(dev, app);
 706
 707                 if (app_mask & (1 << adapter->fcoe.up))
 708                         return err;
 709
 710                 adapter->fcoe.up = app_mask ?
 711                                    ffs(app_mask) - 1 : IXGBE_FCOE_DEFTC;
 712                 ixgbe_dcbnl_devreset(dev);
 713         }
 714 #endif
 715         return err;
 716 }
 717
 718 static u8 ixgbe_dcbnl_getdcbx(struct net_device *dev)
 719 {
 720         struct ixgbe_adapter *adapter = netdev_priv(dev);
 721         return adapter->dcbx_cap;
 722 }
 723
 724 static u8 ixgbe_dcbnl_setdcbx(struct net_device *dev, u8 mode)
 725 {
 726         struct ixgbe_adapter *adapter = netdev_priv(dev);
 727         struct ieee_ets ets = {0};
 728         struct ieee_pfc pfc = {0};
 729
 730         /* no support for LLD_MANAGED modes or CEE+IEEE */
 731         if ((mode & DCB_CAP_DCBX_LLD_MANAGED) ||
 732             ((mode & DCB_CAP_DCBX_VER_IEEE) && (mode & DCB_CAP_DCBX_VER_CEE)) ||
 733             !(mode & DCB_CAP_DCBX_HOST))
 734                 return 1;
 735
 736         if (mode == adapter->dcbx_cap)
 737                 return 0;
 738
 739         adapter->dcbx_cap = mode;
 740
 741         /* ETS and PFC defaults */
 742         ets.ets_cap = 8;
 743         pfc.pfc_cap = 8;
 744
 745         if (mode & DCB_CAP_DCBX_VER_IEEE) {
 746                 ixgbe_dcbnl_ieee_setets(dev, &ets);
 747                 ixgbe_dcbnl_ieee_setpfc(dev, &pfc);
 748         } else if (mode & DCB_CAP_DCBX_VER_CEE) {
 749                 u8 mask = BIT_PFC | BIT_PG_TX | BIT_PG_RX | BIT_APP_UPCHG;
 750
 751                 adapter->dcb_set_bitmap |= mask;
 752                 ixgbe_dcbnl_set_all(dev);
 753         } else {
 754                 /* Drop into single TC mode strict priority as this
 755                  * indicates CEE and IEEE versions are disabled
 756                  */
 757                 ixgbe_dcbnl_ieee_setets(dev, &ets);
 758                 ixgbe_dcbnl_ieee_setpfc(dev, &pfc);
 759                 ixgbe_setup_tc(dev, 0);
 760         }
 761
 762         return 0;
 763 }
 764
 765 const struct dcbnl_rtnl_ops dcbnl_ops = {
 766         .ieee_getets    = ixgbe_dcbnl_ieee_getets,
 767         .ieee_setets    = ixgbe_dcbnl_ieee_setets,
 768         .ieee_getpfc    = ixgbe_dcbnl_ieee_getpfc,
 769         .ieee_setpfc    = ixgbe_dcbnl_ieee_setpfc,
 770         .ieee_setapp    = ixgbe_dcbnl_ieee_setapp,
 771         .ieee_delapp    = ixgbe_dcbnl_ieee_delapp,
 772         .getstate       = ixgbe_dcbnl_get_state,
 773         .setstate       = ixgbe_dcbnl_set_state,
 774         .getpermhwaddr  = ixgbe_dcbnl_get_perm_hw_addr,
 775         .setpgtccfgtx   = ixgbe_dcbnl_set_pg_tc_cfg_tx,
 776         .setpgbwgcfgtx  = ixgbe_dcbnl_set_pg_bwg_cfg_tx,
 777         .setpgtccfgrx   = ixgbe_dcbnl_set_pg_tc_cfg_rx,
 778         .setpgbwgcfgrx  = ixgbe_dcbnl_set_pg_bwg_cfg_rx,
 779         .getpgtccfgtx   = ixgbe_dcbnl_get_pg_tc_cfg_tx,
 780         .getpgbwgcfgtx  = ixgbe_dcbnl_get_pg_bwg_cfg_tx,
 781         .getpgtccfgrx   = ixgbe_dcbnl_get_pg_tc_cfg_rx,
 782         .getpgbwgcfgrx  = ixgbe_dcbnl_get_pg_bwg_cfg_rx,
 783         .setpfccfg      = ixgbe_dcbnl_set_pfc_cfg,
 784         .getpfccfg      = ixgbe_dcbnl_get_pfc_cfg,
 785         .setall         = ixgbe_dcbnl_set_all,
 786         .getcap         = ixgbe_dcbnl_getcap,
 787         .getnumtcs      = ixgbe_dcbnl_getnumtcs,
 788         .setnumtcs      = ixgbe_dcbnl_setnumtcs,
 789         .getpfcstate    = ixgbe_dcbnl_getpfcstate,
 790         .setpfcstate    = ixgbe_dcbnl_setpfcstate,
 791         .getapp         = ixgbe_dcbnl_getapp,
 792         .getdcbx        = ixgbe_dcbnl_getdcbx,
 793         .setdcbx        = ixgbe_dcbnl_setdcbx,
 794 };