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         int 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                 goto out;
 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         if (err)
 135                 goto out;
 136
 137         for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
 138                 netdev_set_prio_tc_map(netdev, i, prio_tc[i]);
 139
 140 out:
 141         return err ? 1 : 0;
 142 }
 143
 144 static void ixgbe_dcbnl_get_perm_hw_addr(struct net_device *netdev,
 145                                          u8 *perm_addr)
 146 {
 147         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 148         int i, j;
 149
 150         memset(perm_addr, 0xff, MAX_ADDR_LEN);
 151
 152         for (i = 0; i < netdev->addr_len; i++)
 153                 perm_addr[i] = adapter->hw.mac.perm_addr[i];
 154
 155         switch (adapter->hw.mac.type) {
 156         case ixgbe_mac_82599EB:
 157         case ixgbe_mac_X540:
 158                 for (j = 0; j < netdev->addr_len; j++, i++)
 159                         perm_addr[i] = adapter->hw.mac.san_addr[j];
 160                 break;
 161         default:
 162                 break;
 163         }
 164 }
 165
 166 static void ixgbe_dcbnl_set_pg_tc_cfg_tx(struct net_device *netdev, int tc,
 167                                          u8 prio, u8 bwg_id, u8 bw_pct,
 168                                          u8 up_map)
 169 {
 170         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 171
 172         if (prio != DCB_ATTR_VALUE_UNDEFINED)
 173                 adapter->temp_dcb_cfg.tc_config[tc].path[0].prio_type = prio;
 174         if (bwg_id != DCB_ATTR_VALUE_UNDEFINED)
 175                 adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_id = bwg_id;
 176         if (bw_pct != DCB_ATTR_VALUE_UNDEFINED)
 177                 adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_percent =
 178                         bw_pct;
 179         if (up_map != DCB_ATTR_VALUE_UNDEFINED)
 180                 adapter->temp_dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap =
 181                         up_map;
 182
 183         if ((adapter->temp_dcb_cfg.tc_config[tc].path[0].prio_type !=
 184              adapter->dcb_cfg.tc_config[tc].path[0].prio_type) ||
 185             (adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_id !=
 186              adapter->dcb_cfg.tc_config[tc].path[0].bwg_id) ||
 187             (adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_percent !=
 188              adapter->dcb_cfg.tc_config[tc].path[0].bwg_percent) ||
 189             (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_PG_TX;
 192
 193         if (adapter->temp_dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap !=
 194              adapter->dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap)
 195                 adapter->dcb_set_bitmap |= BIT_PFC | BIT_APP_UPCHG;
 196 }
 197
 198 static void ixgbe_dcbnl_set_pg_bwg_cfg_tx(struct net_device *netdev, int bwg_id,
 199                                           u8 bw_pct)
 200 {
 201         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 202
 203         adapter->temp_dcb_cfg.bw_percentage[0][bwg_id] = bw_pct;
 204
 205         if (adapter->temp_dcb_cfg.bw_percentage[0][bwg_id] !=
 206             adapter->dcb_cfg.bw_percentage[0][bwg_id])
 207                 adapter->dcb_set_bitmap |= BIT_PG_TX;
 208 }
 209
 210 static void ixgbe_dcbnl_set_pg_tc_cfg_rx(struct net_device *netdev, int tc,
 211                                          u8 prio, u8 bwg_id, u8 bw_pct,
 212                                          u8 up_map)
 213 {
 214         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 215
 216         if (prio != DCB_ATTR_VALUE_UNDEFINED)
 217                 adapter->temp_dcb_cfg.tc_config[tc].path[1].prio_type = prio;
 218         if (bwg_id != DCB_ATTR_VALUE_UNDEFINED)
 219                 adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_id = bwg_id;
 220         if (bw_pct != DCB_ATTR_VALUE_UNDEFINED)
 221                 adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_percent =
 222                         bw_pct;
 223         if (up_map != DCB_ATTR_VALUE_UNDEFINED)
 224                 adapter->temp_dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap =
 225                         up_map;
 226
 227         if ((adapter->temp_dcb_cfg.tc_config[tc].path[1].prio_type !=
 228              adapter->dcb_cfg.tc_config[tc].path[1].prio_type) ||
 229             (adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_id !=
 230              adapter->dcb_cfg.tc_config[tc].path[1].bwg_id) ||
 231             (adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_percent !=
 232              adapter->dcb_cfg.tc_config[tc].path[1].bwg_percent) ||
 233             (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_PG_RX;
 236
 237         if (adapter->temp_dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap !=
 238              adapter->dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap)
 239                 adapter->dcb_set_bitmap |= BIT_PFC;
 240 }
 241
 242 static void ixgbe_dcbnl_set_pg_bwg_cfg_rx(struct net_device *netdev, int bwg_id,
 243                                           u8 bw_pct)
 244 {
 245         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 246
 247         adapter->temp_dcb_cfg.bw_percentage[1][bwg_id] = bw_pct;
 248
 249         if (adapter->temp_dcb_cfg.bw_percentage[1][bwg_id] !=
 250             adapter->dcb_cfg.bw_percentage[1][bwg_id])
 251                 adapter->dcb_set_bitmap |= BIT_PG_RX;
 252 }
 253
 254 static void ixgbe_dcbnl_get_pg_tc_cfg_tx(struct net_device *netdev, int tc,
 255                                          u8 *prio, u8 *bwg_id, u8 *bw_pct,
 256                                          u8 *up_map)
 257 {
 258         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 259
 260         *prio = adapter->dcb_cfg.tc_config[tc].path[0].prio_type;
 261         *bwg_id = adapter->dcb_cfg.tc_config[tc].path[0].bwg_id;
 262         *bw_pct = adapter->dcb_cfg.tc_config[tc].path[0].bwg_percent;
 263         *up_map = adapter->dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap;
 264 }
 265
 266 static void ixgbe_dcbnl_get_pg_bwg_cfg_tx(struct net_device *netdev, int bwg_id,
 267                                           u8 *bw_pct)
 268 {
 269         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 270
 271         *bw_pct = adapter->dcb_cfg.bw_percentage[0][bwg_id];
 272 }
 273
 274 static void ixgbe_dcbnl_get_pg_tc_cfg_rx(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[1].prio_type;
 281         *bwg_id = adapter->dcb_cfg.tc_config[tc].path[1].bwg_id;
 282         *bw_pct = adapter->dcb_cfg.tc_config[tc].path[1].bwg_percent;
 283         *up_map = adapter->dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap;
 284 }
 285
 286 static void ixgbe_dcbnl_get_pg_bwg_cfg_rx(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[1][bwg_id];
 292 }
 293
 294 static void ixgbe_dcbnl_set_pfc_cfg(struct net_device *netdev, int priority,
 295                                     u8 setting)
 296 {
 297         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 298
 299         adapter->temp_dcb_cfg.tc_config[priority].dcb_pfc = setting;
 300         if (adapter->temp_dcb_cfg.tc_config[priority].dcb_pfc !=
 301             adapter->dcb_cfg.tc_config[priority].dcb_pfc) {
 302                 adapter->dcb_set_bitmap |= BIT_PFC;
 303                 adapter->temp_dcb_cfg.pfc_mode_enable = true;
 304         }
 305 }
 306
 307 static void ixgbe_dcbnl_get_pfc_cfg(struct net_device *netdev, int priority,
 308                                     u8 *setting)
 309 {
 310         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 311
 312         *setting = adapter->dcb_cfg.tc_config[priority].dcb_pfc;
 313 }
 314
 315 #ifdef IXGBE_FCOE
 316 static void ixgbe_dcbnl_devreset(struct net_device *dev)
 317 {
 318         struct ixgbe_adapter *adapter = netdev_priv(dev);
 319
 320         while (test_and_set_bit(__IXGBE_RESETTING, &adapter->state))
 321                 usleep_range(1000, 2000);
 322
 323         if (netif_running(dev))
 324                 dev->netdev_ops->ndo_stop(dev);
 325
 326         ixgbe_clear_interrupt_scheme(adapter);
 327         ixgbe_init_interrupt_scheme(adapter);
 328
 329         if (netif_running(dev))
 330                 dev->netdev_ops->ndo_open(dev);
 331
 332         clear_bit(__IXGBE_RESETTING, &adapter->state);
 333 }
 334 #endif
 335
 336 static u8 ixgbe_dcbnl_set_all(struct net_device *netdev)
 337 {
 338         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 339         int ret, i;
 340 #ifdef IXGBE_FCOE
 341         struct dcb_app app = {
 342                               .selector = DCB_APP_IDTYPE_ETHTYPE,
 343                               .protocol = ETH_P_FCOE,
 344                              };
 345         u8 up;
 346
 347         /* In IEEE mode, use the IEEE Ethertype selector value */
 348         if (adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE) {
 349                 app.selector = IEEE_8021QAZ_APP_SEL_ETHERTYPE;
 350                 up = dcb_ieee_getapp_mask(netdev, &app);
 351         } else {
 352                 up = dcb_getapp(netdev, &app);
 353         }
 354 #endif
 355
 356         /* Fail command if not in CEE mode */
 357         if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE))
 358                 return 1;
 359
 360         ret = ixgbe_copy_dcb_cfg(&adapter->temp_dcb_cfg, &adapter->dcb_cfg,
 361                                  MAX_TRAFFIC_CLASS);
 362         if (ret)
 363                 return DCB_NO_HW_CHG;
 364
 365         if (adapter->dcb_cfg.pfc_mode_enable) {
 366                 switch (adapter->hw.mac.type) {
 367                 case ixgbe_mac_82599EB:
 368                 case ixgbe_mac_X540:
 369                         if (adapter->hw.fc.current_mode != ixgbe_fc_pfc)
 370                                 adapter->last_lfc_mode =
 371                                                   adapter->hw.fc.current_mode;
 372                         break;
 373                 default:
 374                         break;
 375                 }
 376                 adapter->hw.fc.requested_mode = ixgbe_fc_pfc;
 377         } else {
 378                 switch (adapter->hw.mac.type) {
 379                 case ixgbe_mac_82598EB:
 380                         adapter->hw.fc.requested_mode = ixgbe_fc_none;
 381                         break;
 382                 case ixgbe_mac_82599EB:
 383                 case ixgbe_mac_X540:
 384                         adapter->hw.fc.requested_mode = adapter->last_lfc_mode;
 385                         break;
 386                 default:
 387                         break;
 388                 }
 389         }
 390
 391         if (adapter->dcb_set_bitmap & (BIT_PG_TX|BIT_PG_RX)) {
 392                 u16 refill[MAX_TRAFFIC_CLASS], max[MAX_TRAFFIC_CLASS];
 393                 u8 bwg_id[MAX_TRAFFIC_CLASS], prio_type[MAX_TRAFFIC_CLASS];
 394                 /* Priority to TC mapping in CEE case default to 1:1 */
 395                 u8 prio_tc[MAX_USER_PRIORITY];
 396                 int max_frame = adapter->netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
 397
 398 #ifdef IXGBE_FCOE
 399                 if (adapter->netdev->features & NETIF_F_FCOE_MTU)
 400                         max_frame = max(max_frame, IXGBE_FCOE_JUMBO_FRAME_SIZE);
 401 #endif
 402
 403                 ixgbe_dcb_calculate_tc_credits(&adapter->hw, &adapter->dcb_cfg,
 404                                                max_frame, DCB_TX_CONFIG);
 405                 ixgbe_dcb_calculate_tc_credits(&adapter->hw, &adapter->dcb_cfg,
 406                                                max_frame, DCB_RX_CONFIG);
 407
 408                 ixgbe_dcb_unpack_refill(&adapter->dcb_cfg,
 409                                         DCB_TX_CONFIG, refill);
 410                 ixgbe_dcb_unpack_max(&adapter->dcb_cfg, max);
 411                 ixgbe_dcb_unpack_bwgid(&adapter->dcb_cfg,
 412                                        DCB_TX_CONFIG, bwg_id);
 413                 ixgbe_dcb_unpack_prio(&adapter->dcb_cfg,
 414                                       DCB_TX_CONFIG, prio_type);
 415                 ixgbe_dcb_unpack_map(&adapter->dcb_cfg,
 416                                      DCB_TX_CONFIG, prio_tc);
 417
 418                 ixgbe_dcb_hw_ets_config(&adapter->hw, refill, max,
 419                                         bwg_id, prio_type, prio_tc);
 420
 421                 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
 422                         netdev_set_prio_tc_map(netdev, i, prio_tc[i]);
 423         }
 424
 425         if (adapter->dcb_set_bitmap & BIT_PFC) {
 426                 u8 pfc_en;
 427                 u8 prio_tc[MAX_USER_PRIORITY];
 428
 429                 ixgbe_dcb_unpack_map(&adapter->dcb_cfg,
 430                                      DCB_TX_CONFIG, prio_tc);
 431                 ixgbe_dcb_unpack_pfc(&adapter->dcb_cfg, &pfc_en);
 432                 ixgbe_dcb_hw_pfc_config(&adapter->hw, pfc_en, prio_tc);
 433                 ret = DCB_HW_CHG;
 434         }
 435
 436         if (adapter->dcb_cfg.pfc_mode_enable)
 437                 adapter->hw.fc.current_mode = ixgbe_fc_pfc;
 438
 439 #ifdef IXGBE_FCOE
 440         /* Reprogam FCoE hardware offloads when the traffic class
 441          * FCoE is using changes. This happens if the APP info
 442          * changes or the up2tc mapping is updated.
 443          */
 444         if ((up && !(up & (1 << adapter->fcoe.up))) ||
 445             (adapter->dcb_set_bitmap & BIT_APP_UPCHG)) {
 446                 adapter->fcoe.up = ffs(up) - 1;
 447                 ixgbe_dcbnl_devreset(netdev);
 448                 ret = DCB_HW_CHG_RST;
 449         }
 450 #endif
 451
 452         adapter->dcb_set_bitmap = 0x00;
 453         return ret;
 454 }
 455
 456 static u8 ixgbe_dcbnl_getcap(struct net_device *netdev, int capid, u8 *cap)
 457 {
 458         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 459
 460         switch (capid) {
 461         case DCB_CAP_ATTR_PG:
 462                 *cap = true;
 463                 break;
 464         case DCB_CAP_ATTR_PFC:
 465                 *cap = true;
 466                 break;
 467         case DCB_CAP_ATTR_UP2TC:
 468                 *cap = false;
 469                 break;
 470         case DCB_CAP_ATTR_PG_TCS:
 471                 *cap = 0x80;
 472                 break;
 473         case DCB_CAP_ATTR_PFC_TCS:
 474                 *cap = 0x80;
 475                 break;
 476         case DCB_CAP_ATTR_GSP:
 477                 *cap = true;
 478                 break;
 479         case DCB_CAP_ATTR_BCN:
 480                 *cap = false;
 481                 break;
 482         case DCB_CAP_ATTR_DCBX:
 483                 *cap = adapter->dcbx_cap;
 484                 break;
 485         default:
 486                 *cap = false;
 487                 break;
 488         }
 489
 490         return 0;
 491 }
 492
 493 static int ixgbe_dcbnl_getnumtcs(struct net_device *netdev, int tcid, u8 *num)
 494 {
 495         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 496         u8 rval = 0;
 497
 498         if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
 499                 switch (tcid) {
 500                 case DCB_NUMTCS_ATTR_PG:
 501                         *num = adapter->dcb_cfg.num_tcs.pg_tcs;
 502                         break;
 503                 case DCB_NUMTCS_ATTR_PFC:
 504                         *num = adapter->dcb_cfg.num_tcs.pfc_tcs;
 505                         break;
 506                 default:
 507                         rval = -EINVAL;
 508                         break;
 509                 }
 510         } else {
 511                 rval = -EINVAL;
 512         }
 513
 514         return rval;
 515 }
 516
 517 static int ixgbe_dcbnl_setnumtcs(struct net_device *netdev, int tcid, u8 num)
 518 {
 519         return -EINVAL;
 520 }
 521
 522 static u8 ixgbe_dcbnl_getpfcstate(struct net_device *netdev)
 523 {
 524         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 525
 526         return adapter->dcb_cfg.pfc_mode_enable;
 527 }
 528
 529 static void ixgbe_dcbnl_setpfcstate(struct net_device *netdev, u8 state)
 530 {
 531         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 532
 533         adapter->temp_dcb_cfg.pfc_mode_enable = state;
 534         if (adapter->temp_dcb_cfg.pfc_mode_enable !=
 535                 adapter->dcb_cfg.pfc_mode_enable)
 536                 adapter->dcb_set_bitmap |= BIT_PFC;
 537 }
 538
 539 /**
 540  * ixgbe_dcbnl_getapp - retrieve the DCBX application user priority
 541  * @netdev : the corresponding netdev
 542  * @idtype : identifies the id as ether type or TCP/UDP port number
 543  * @id: id is either ether type or TCP/UDP port number
 544  *
 545  * Returns : on success, returns a non-zero 802.1p user priority bitmap
 546  * otherwise returns 0 as the invalid user priority bitmap to indicate an
 547  * error.
 548  */
 549 static u8 ixgbe_dcbnl_getapp(struct net_device *netdev, u8 idtype, u16 id)
 550 {
 551         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 552         struct dcb_app app = {
 553                                 .selector = idtype,
 554                                 .protocol = id,
 555                              };
 556
 557         if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE))
 558                 return 0;
 559
 560         return dcb_getapp(netdev, &app);
 561 }
 562
 563 static int ixgbe_dcbnl_ieee_getets(struct net_device *dev,
 564                                    struct ieee_ets *ets)
 565 {
 566         struct ixgbe_adapter *adapter = netdev_priv(dev);
 567         struct ieee_ets *my_ets = adapter->ixgbe_ieee_ets;
 568
 569         ets->ets_cap = adapter->dcb_cfg.num_tcs.pg_tcs;
 570
 571         /* No IEEE PFC settings available */
 572         if (!my_ets)
 573                 return 0;
 574
 575         ets->cbs = my_ets->cbs;
 576         memcpy(ets->tc_tx_bw, my_ets->tc_tx_bw, sizeof(ets->tc_tx_bw));
 577         memcpy(ets->tc_rx_bw, my_ets->tc_rx_bw, sizeof(ets->tc_rx_bw));
 578         memcpy(ets->tc_tsa, my_ets->tc_tsa, sizeof(ets->tc_tsa));
 579         memcpy(ets->prio_tc, my_ets->prio_tc, sizeof(ets->prio_tc));
 580         return 0;
 581 }
 582
 583 static int ixgbe_dcbnl_ieee_setets(struct net_device *dev,
 584                                    struct ieee_ets *ets)
 585 {
 586         struct ixgbe_adapter *adapter = netdev_priv(dev);
 587         int max_frame = dev->mtu + ETH_HLEN + ETH_FCS_LEN;
 588         int i, err = 0;
 589         __u8 max_tc = 0;
 590
 591         if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
 592                 return -EINVAL;
 593
 594         if (!adapter->ixgbe_ieee_ets) {
 595                 adapter->ixgbe_ieee_ets = kmalloc(sizeof(struct ieee_ets),
 596                                                   GFP_KERNEL);
 597                 if (!adapter->ixgbe_ieee_ets)
 598                         return -ENOMEM;
 599         }
 600
 601         memcpy(adapter->ixgbe_ieee_ets, ets, sizeof(*adapter->ixgbe_ieee_ets));
 602
 603         for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
 604                 if (ets->prio_tc[i] > max_tc)
 605                         max_tc = ets->prio_tc[i];
 606         }
 607
 608         if (max_tc)
 609                 max_tc++;
 610
 611         if (max_tc > adapter->dcb_cfg.num_tcs.pg_tcs)
 612                 return -EINVAL;
 613
 614         if (max_tc != netdev_get_num_tc(dev))
 615                 err = ixgbe_setup_tc(dev, max_tc);
 616
 617         if (err)
 618                 goto err_out;
 619
 620         for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
 621                 netdev_set_prio_tc_map(dev, i, ets->prio_tc[i]);
 622
 623         err = ixgbe_dcb_hw_ets(&adapter->hw, ets, max_frame);
 624 err_out:
 625         return err;
 626 }
 627
 628 static int ixgbe_dcbnl_ieee_getpfc(struct net_device *dev,
 629                                    struct ieee_pfc *pfc)
 630 {
 631         struct ixgbe_adapter *adapter = netdev_priv(dev);
 632         struct ieee_pfc *my_pfc = adapter->ixgbe_ieee_pfc;
 633         int i;
 634
 635         pfc->pfc_cap = adapter->dcb_cfg.num_tcs.pfc_tcs;
 636
 637         /* No IEEE PFC settings available */
 638         if (!my_pfc)
 639                 return 0;
 640
 641         pfc->pfc_en = my_pfc->pfc_en;
 642         pfc->mbc = my_pfc->mbc;
 643         pfc->delay = my_pfc->delay;
 644
 645         for (i = 0; i < MAX_TRAFFIC_CLASS; i++) {
 646                 pfc->requests[i] = adapter->stats.pxoffrxc[i];
 647                 pfc->indications[i] = adapter->stats.pxofftxc[i];
 648         }
 649
 650         return 0;
 651 }
 652
 653 static int ixgbe_dcbnl_ieee_setpfc(struct net_device *dev,
 654                                    struct ieee_pfc *pfc)
 655 {
 656         struct ixgbe_adapter *adapter = netdev_priv(dev);
 657         u8 *prio_tc;
 658
 659         if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
 660                 return -EINVAL;
 661
 662         if (!adapter->ixgbe_ieee_pfc) {
 663                 adapter->ixgbe_ieee_pfc = kmalloc(sizeof(struct ieee_pfc),
 664                                                   GFP_KERNEL);
 665                 if (!adapter->ixgbe_ieee_pfc)
 666                         return -ENOMEM;
 667         }
 668
 669         prio_tc = adapter->ixgbe_ieee_ets->prio_tc;
 670         memcpy(adapter->ixgbe_ieee_pfc, pfc, sizeof(*adapter->ixgbe_ieee_pfc));
 671         return ixgbe_dcb_hw_pfc_config(&adapter->hw, pfc->pfc_en, prio_tc);
 672 }
 673
 674 static int ixgbe_dcbnl_ieee_setapp(struct net_device *dev,
 675                                    struct dcb_app *app)
 676 {
 677         struct ixgbe_adapter *adapter = netdev_priv(dev);
 678         int err = -EINVAL;
 679
 680         if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
 681                 return err;
 682
 683         err = dcb_ieee_setapp(dev, app);
 684
 685 #ifdef IXGBE_FCOE
 686         if (!err && app->selector == IEEE_8021QAZ_APP_SEL_ETHERTYPE &&
 687             app->protocol == ETH_P_FCOE) {
 688                 u8 app_mask = dcb_ieee_getapp_mask(dev, app);
 689
 690                 if (app_mask & (1 << adapter->fcoe.up))
 691                         return err;
 692
 693                 adapter->fcoe.up = app->priority;
 694                 ixgbe_dcbnl_devreset(dev);
 695         }
 696 #endif
 697         return 0;
 698 }
 699
 700 static int ixgbe_dcbnl_ieee_delapp(struct net_device *dev,
 701                                    struct dcb_app *app)
 702 {
 703         struct ixgbe_adapter *adapter = netdev_priv(dev);
 704         int err;
 705
 706         if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
 707                 return -EINVAL;
 708
 709         err = dcb_ieee_delapp(dev, app);
 710
 711 #ifdef IXGBE_FCOE
 712         if (!err && app->selector == IEEE_8021QAZ_APP_SEL_ETHERTYPE &&
 713             app->protocol == ETH_P_FCOE) {
 714                 u8 app_mask = dcb_ieee_getapp_mask(dev, app);
 715
 716                 if (app_mask & (1 << adapter->fcoe.up))
 717                         return err;
 718
 719                 adapter->fcoe.up = app_mask ?
 720                                    ffs(app_mask) - 1 : IXGBE_FCOE_DEFTC;
 721                 ixgbe_dcbnl_devreset(dev);
 722         }
 723 #endif
 724         return err;
 725 }
 726
 727 static u8 ixgbe_dcbnl_getdcbx(struct net_device *dev)
 728 {
 729         struct ixgbe_adapter *adapter = netdev_priv(dev);
 730         return adapter->dcbx_cap;
 731 }
 732
 733 static u8 ixgbe_dcbnl_setdcbx(struct net_device *dev, u8 mode)
 734 {
 735         struct ixgbe_adapter *adapter = netdev_priv(dev);
 736         struct ieee_ets ets = {0};
 737         struct ieee_pfc pfc = {0};
 738         int err = 0;
 739
 740         /* no support for LLD_MANAGED modes or CEE+IEEE */
 741         if ((mode & DCB_CAP_DCBX_LLD_MANAGED) ||
 742             ((mode & DCB_CAP_DCBX_VER_IEEE) && (mode & DCB_CAP_DCBX_VER_CEE)) ||
 743             !(mode & DCB_CAP_DCBX_HOST))
 744                 return 1;
 745
 746         if (mode == adapter->dcbx_cap)
 747                 return 0;
 748
 749         adapter->dcbx_cap = mode;
 750
 751         /* ETS and PFC defaults */
 752         ets.ets_cap = 8;
 753         pfc.pfc_cap = 8;
 754
 755         if (mode & DCB_CAP_DCBX_VER_IEEE) {
 756                 ixgbe_dcbnl_ieee_setets(dev, &ets);
 757                 ixgbe_dcbnl_ieee_setpfc(dev, &pfc);
 758         } else if (mode & DCB_CAP_DCBX_VER_CEE) {
 759                 u8 mask = BIT_PFC | BIT_PG_TX | BIT_PG_RX | BIT_APP_UPCHG;
 760
 761                 adapter->dcb_set_bitmap |= mask;
 762                 ixgbe_dcbnl_set_all(dev);
 763         } else {
 764                 /* Drop into single TC mode strict priority as this
 765                  * indicates CEE and IEEE versions are disabled
 766                  */
 767                 ixgbe_dcbnl_ieee_setets(dev, &ets);
 768                 ixgbe_dcbnl_ieee_setpfc(dev, &pfc);
 769                 err = ixgbe_setup_tc(dev, 0);
 770         }
 771
 772         return err ? 1 : 0;
 773 }
 774
 775 const struct dcbnl_rtnl_ops dcbnl_ops = {
 776         .ieee_getets    = ixgbe_dcbnl_ieee_getets,
 777         .ieee_setets    = ixgbe_dcbnl_ieee_setets,
 778         .ieee_getpfc    = ixgbe_dcbnl_ieee_getpfc,
 779         .ieee_setpfc    = ixgbe_dcbnl_ieee_setpfc,
 780         .ieee_setapp    = ixgbe_dcbnl_ieee_setapp,
 781         .ieee_delapp    = ixgbe_dcbnl_ieee_delapp,
 782         .getstate       = ixgbe_dcbnl_get_state,
 783         .setstate       = ixgbe_dcbnl_set_state,
 784         .getpermhwaddr  = ixgbe_dcbnl_get_perm_hw_addr,
 785         .setpgtccfgtx   = ixgbe_dcbnl_set_pg_tc_cfg_tx,
 786         .setpgbwgcfgtx  = ixgbe_dcbnl_set_pg_bwg_cfg_tx,
 787         .setpgtccfgrx   = ixgbe_dcbnl_set_pg_tc_cfg_rx,
 788         .setpgbwgcfgrx  = ixgbe_dcbnl_set_pg_bwg_cfg_rx,
 789         .getpgtccfgtx   = ixgbe_dcbnl_get_pg_tc_cfg_tx,
 790         .getpgbwgcfgtx  = ixgbe_dcbnl_get_pg_bwg_cfg_tx,
 791         .getpgtccfgrx   = ixgbe_dcbnl_get_pg_tc_cfg_rx,
 792         .getpgbwgcfgrx  = ixgbe_dcbnl_get_pg_bwg_cfg_rx,
 793         .setpfccfg      = ixgbe_dcbnl_set_pfc_cfg,
 794         .getpfccfg      = ixgbe_dcbnl_get_pfc_cfg,
 795         .setall         = ixgbe_dcbnl_set_all,
 796         .getcap         = ixgbe_dcbnl_getcap,
 797         .getnumtcs      = ixgbe_dcbnl_getnumtcs,
 798         .setnumtcs      = ixgbe_dcbnl_setnumtcs,
 799         .getpfcstate    = ixgbe_dcbnl_getpfcstate,
 800         .setpfcstate    = ixgbe_dcbnl_setpfcstate,
 801         .getapp         = ixgbe_dcbnl_getapp,
 802         .getdcbx        = ixgbe_dcbnl_getdcbx,
 803         .setdcbx        = ixgbe_dcbnl_setdcbx,
 804 };