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 *scfg,
  48                        struct ixgbe_dcb_config *dcfg, int tc_max)
  49 {
  50         struct tc_configuration *src = NULL;
  51         struct tc_configuration *dst = NULL;
  52         int i, j;
  53         int tx = DCB_TX_CONFIG;
  54         int rx = DCB_RX_CONFIG;
  55         int changes = 0;
  56
  57         if (!scfg || !dcfg)
  58                 return changes;
  59
  60         for (i = DCB_PG_ATTR_TC_0; i < tc_max + DCB_PG_ATTR_TC_0; i++) {
  61                 src = &scfg->tc_config[i - DCB_PG_ATTR_TC_0];
  62                 dst = &dcfg->tc_config[i - DCB_PG_ATTR_TC_0];
  63
  64                 if (dst->path[tx].prio_type != src->path[tx].prio_type) {
  65                         dst->path[tx].prio_type = src->path[tx].prio_type;
  66                         changes |= BIT_PG_TX;
  67                 }
  68
  69                 if (dst->path[tx].bwg_id != src->path[tx].bwg_id) {
  70                         dst->path[tx].bwg_id = src->path[tx].bwg_id;
  71                         changes |= BIT_PG_TX;
  72                 }
  73
  74                 if (dst->path[tx].bwg_percent != src->path[tx].bwg_percent) {
  75                         dst->path[tx].bwg_percent = src->path[tx].bwg_percent;
  76                         changes |= BIT_PG_TX;
  77                 }
  78
  79                 if (dst->path[tx].up_to_tc_bitmap !=
  80                                 src->path[tx].up_to_tc_bitmap) {
  81                         dst->path[tx].up_to_tc_bitmap =
  82                                 src->path[tx].up_to_tc_bitmap;
  83                         changes |= (BIT_PG_TX | BIT_PFC | BIT_APP_UPCHG);
  84                 }
  85
  86                 if (dst->path[rx].prio_type != src->path[rx].prio_type) {
  87                         dst->path[rx].prio_type = src->path[rx].prio_type;
  88                         changes |= BIT_PG_RX;
  89                 }
  90
  91                 if (dst->path[rx].bwg_id != src->path[rx].bwg_id) {
  92                         dst->path[rx].bwg_id = src->path[rx].bwg_id;
  93                         changes |= BIT_PG_RX;
  94                 }
  95
  96                 if (dst->path[rx].bwg_percent != src->path[rx].bwg_percent) {
  97                         dst->path[rx].bwg_percent = src->path[rx].bwg_percent;
  98                         changes |= BIT_PG_RX;
  99                 }
 100
 101                 if (dst->path[rx].up_to_tc_bitmap !=
 102                                 src->path[rx].up_to_tc_bitmap) {
 103                         dst->path[rx].up_to_tc_bitmap =
 104                                 src->path[rx].up_to_tc_bitmap;
 105                         changes |= (BIT_PG_RX | BIT_PFC | BIT_APP_UPCHG);
 106                 }
 107         }
 108
 109         for (i = DCB_PG_ATTR_BW_ID_0; i < DCB_PG_ATTR_BW_ID_MAX; i++) {
 110                 j = i - DCB_PG_ATTR_BW_ID_0;
 111                 if (dcfg->bw_percentage[tx][j] != scfg->bw_percentage[tx][j]) {
 112                         dcfg->bw_percentage[tx][j] = scfg->bw_percentage[tx][j];
 113                         changes |= BIT_PG_TX;
 114                 }
 115                 if (dcfg->bw_percentage[rx][j] != scfg->bw_percentage[rx][j]) {
 116                         dcfg->bw_percentage[rx][j] = scfg->bw_percentage[rx][j];
 117                         changes |= BIT_PG_RX;
 118                 }
 119         }
 120
 121         for (i = DCB_PFC_UP_ATTR_0; i < DCB_PFC_UP_ATTR_MAX; i++) {
 122                 j = i - DCB_PFC_UP_ATTR_0;
 123                 if (dcfg->tc_config[j].dcb_pfc != scfg->tc_config[j].dcb_pfc) {
 124                         dcfg->tc_config[j].dcb_pfc = scfg->tc_config[j].dcb_pfc;
 125                         changes |= BIT_PFC;
 126                 }
 127         }
 128
 129         if (dcfg->pfc_mode_enable != scfg->pfc_mode_enable) {
 130                 dcfg->pfc_mode_enable = scfg->pfc_mode_enable;
 131                 changes |= BIT_PFC;
 132         }
 133
 134         return changes;
 135 }
 136
 137 static u8 ixgbe_dcbnl_get_state(struct net_device *netdev)
 138 {
 139         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 140
 141         return !!(adapter->flags & IXGBE_FLAG_DCB_ENABLED);
 142 }
 143
 144 static u8 ixgbe_dcbnl_set_state(struct net_device *netdev, u8 state)
 145 {
 146         int err = 0;
 147         u8 prio_tc[MAX_USER_PRIORITY] = {0};
 148         int i;
 149         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 150
 151         /* Fail command if not in CEE mode */
 152         if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE))
 153                 return 1;
 154
 155         /* verify there is something to do, if not then exit */
 156         if (!!state != !(adapter->flags & IXGBE_FLAG_DCB_ENABLED))
 157                 goto out;
 158
 159         if (state > 0) {
 160                 err = ixgbe_setup_tc(netdev, adapter->dcb_cfg.num_tcs.pg_tcs);
 161                 ixgbe_dcb_unpack_map(&adapter->dcb_cfg, DCB_TX_CONFIG, prio_tc);
 162         } else {
 163                 err = ixgbe_setup_tc(netdev, 0);
 164         }
 165
 166         if (err)
 167                 goto out;
 168
 169         for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
 170                 netdev_set_prio_tc_map(netdev, i, prio_tc[i]);
 171
 172 out:
 173         return err ? 1 : 0;
 174 }
 175
 176 static void ixgbe_dcbnl_get_perm_hw_addr(struct net_device *netdev,
 177                                          u8 *perm_addr)
 178 {
 179         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 180         int i, j;
 181
 182         memset(perm_addr, 0xff, MAX_ADDR_LEN);
 183
 184         for (i = 0; i < netdev->addr_len; i++)
 185                 perm_addr[i] = adapter->hw.mac.perm_addr[i];
 186
 187         switch (adapter->hw.mac.type) {
 188         case ixgbe_mac_82599EB:
 189         case ixgbe_mac_X540:
 190                 for (j = 0; j < netdev->addr_len; j++, i++)
 191                         perm_addr[i] = adapter->hw.mac.san_addr[j];
 192                 break;
 193         default:
 194                 break;
 195         }
 196 }
 197
 198 static void ixgbe_dcbnl_set_pg_tc_cfg_tx(struct net_device *netdev, int tc,
 199                                          u8 prio, u8 bwg_id, u8 bw_pct,
 200                                          u8 up_map)
 201 {
 202         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 203
 204         if (prio != DCB_ATTR_VALUE_UNDEFINED)
 205                 adapter->temp_dcb_cfg.tc_config[tc].path[0].prio_type = prio;
 206         if (bwg_id != DCB_ATTR_VALUE_UNDEFINED)
 207                 adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_id = bwg_id;
 208         if (bw_pct != DCB_ATTR_VALUE_UNDEFINED)
 209                 adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_percent =
 210                         bw_pct;
 211         if (up_map != DCB_ATTR_VALUE_UNDEFINED)
 212                 adapter->temp_dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap =
 213                         up_map;
 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
 224 static void ixgbe_dcbnl_set_pg_tc_cfg_rx(struct net_device *netdev, int tc,
 225                                          u8 prio, u8 bwg_id, u8 bw_pct,
 226                                          u8 up_map)
 227 {
 228         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 229
 230         if (prio != DCB_ATTR_VALUE_UNDEFINED)
 231                 adapter->temp_dcb_cfg.tc_config[tc].path[1].prio_type = prio;
 232         if (bwg_id != DCB_ATTR_VALUE_UNDEFINED)
 233                 adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_id = bwg_id;
 234         if (bw_pct != DCB_ATTR_VALUE_UNDEFINED)
 235                 adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_percent =
 236                         bw_pct;
 237         if (up_map != DCB_ATTR_VALUE_UNDEFINED)
 238                 adapter->temp_dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap =
 239                         up_map;
 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
 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->temp_dcb_cfg.pfc_mode_enable = true;
 299 }
 300
 301 static void ixgbe_dcbnl_get_pfc_cfg(struct net_device *netdev, int priority,
 302                                     u8 *setting)
 303 {
 304         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 305
 306         *setting = adapter->dcb_cfg.tc_config[priority].dcb_pfc;
 307 }
 308
 309 #ifdef IXGBE_FCOE
 310 static void ixgbe_dcbnl_devreset(struct net_device *dev)
 311 {
 312         struct ixgbe_adapter *adapter = netdev_priv(dev);
 313
 314         while (test_and_set_bit(__IXGBE_RESETTING, &adapter->state))
 315                 usleep_range(1000, 2000);
 316
 317         if (netif_running(dev))
 318                 dev->netdev_ops->ndo_stop(dev);
 319
 320         ixgbe_clear_interrupt_scheme(adapter);
 321         ixgbe_init_interrupt_scheme(adapter);
 322
 323         if (netif_running(dev))
 324                 dev->netdev_ops->ndo_open(dev);
 325
 326         clear_bit(__IXGBE_RESETTING, &adapter->state);
 327 }
 328 #endif
 329
 330 static u8 ixgbe_dcbnl_set_all(struct net_device *netdev)
 331 {
 332         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 333         int ret = DCB_NO_HW_CHG;
 334         int i;
 335 #ifdef IXGBE_FCOE
 336         struct dcb_app app = {
 337                               .selector = DCB_APP_IDTYPE_ETHTYPE,
 338                               .protocol = ETH_P_FCOE,
 339                              };
 340         u8 up;
 341
 342         /* In IEEE mode, use the IEEE Ethertype selector value */
 343         if (adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE) {
 344                 app.selector = IEEE_8021QAZ_APP_SEL_ETHERTYPE;
 345                 up = dcb_ieee_getapp_mask(netdev, &app);
 346         } else {
 347                 up = dcb_getapp(netdev, &app);
 348         }
 349 #endif
 350
 351         /* Fail command if not in CEE mode */
 352         if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE))
 353                 return ret;
 354
 355         adapter->dcb_set_bitmap |= ixgbe_copy_dcb_cfg(&adapter->temp_dcb_cfg,
 356                                                       &adapter->dcb_cfg,
 357                                                       MAX_TRAFFIC_CLASS);
 358         if (!adapter->dcb_set_bitmap)
 359                 return ret;
 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                 ret = DCB_HW_CHG_RST;
 421         }
 422
 423         if (adapter->dcb_set_bitmap & BIT_PFC) {
 424                 u8 pfc_en;
 425                 u8 prio_tc[MAX_USER_PRIORITY];
 426
 427                 ixgbe_dcb_unpack_map(&adapter->dcb_cfg,
 428                                      DCB_TX_CONFIG, prio_tc);
 429                 ixgbe_dcb_unpack_pfc(&adapter->dcb_cfg, &pfc_en);
 430                 ixgbe_dcb_hw_pfc_config(&adapter->hw, pfc_en, prio_tc);
 431                 if (ret != DCB_HW_CHG_RST)
 432                         ret = DCB_HW_CHG;
 433         }
 434
 435         if (adapter->dcb_cfg.pfc_mode_enable)
 436                 adapter->hw.fc.current_mode = ixgbe_fc_pfc;
 437
 438 #ifdef IXGBE_FCOE
 439         /* Reprogam FCoE hardware offloads when the traffic class
 440          * FCoE is using changes. This happens if the APP info
 441          * changes or the up2tc mapping is updated.
 442          */
 443         if ((up && !(up & (1 << adapter->fcoe.up))) ||
 444             (adapter->dcb_set_bitmap & BIT_APP_UPCHG)) {
 445                 adapter->fcoe.up = ffs(up) - 1;
 446                 ixgbe_dcbnl_devreset(netdev);
 447                 ret = DCB_HW_CHG_RST;
 448         }
 449 #endif
 450
 451         adapter->dcb_set_bitmap = 0x00;
 452         return ret;
 453 }
 454
 455 static u8 ixgbe_dcbnl_getcap(struct net_device *netdev, int capid, u8 *cap)
 456 {
 457         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 458
 459         switch (capid) {
 460         case DCB_CAP_ATTR_PG:
 461                 *cap = true;
 462                 break;
 463         case DCB_CAP_ATTR_PFC:
 464                 *cap = true;
 465                 break;
 466         case DCB_CAP_ATTR_UP2TC:
 467                 *cap = false;
 468                 break;
 469         case DCB_CAP_ATTR_PG_TCS:
 470                 *cap = 0x80;
 471                 break;
 472         case DCB_CAP_ATTR_PFC_TCS:
 473                 *cap = 0x80;
 474                 break;
 475         case DCB_CAP_ATTR_GSP:
 476                 *cap = true;
 477                 break;
 478         case DCB_CAP_ATTR_BCN:
 479                 *cap = false;
 480                 break;
 481         case DCB_CAP_ATTR_DCBX:
 482                 *cap = adapter->dcbx_cap;
 483                 break;
 484         default:
 485                 *cap = false;
 486                 break;
 487         }
 488
 489         return 0;
 490 }
 491
 492 static int ixgbe_dcbnl_getnumtcs(struct net_device *netdev, int tcid, u8 *num)
 493 {
 494         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 495         u8 rval = 0;
 496
 497         if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
 498                 switch (tcid) {
 499                 case DCB_NUMTCS_ATTR_PG:
 500                         *num = adapter->dcb_cfg.num_tcs.pg_tcs;
 501                         break;
 502                 case DCB_NUMTCS_ATTR_PFC:
 503                         *num = adapter->dcb_cfg.num_tcs.pfc_tcs;
 504                         break;
 505                 default:
 506                         rval = -EINVAL;
 507                         break;
 508                 }
 509         } else {
 510                 rval = -EINVAL;
 511         }
 512
 513         return rval;
 514 }
 515
 516 static int ixgbe_dcbnl_setnumtcs(struct net_device *netdev, int tcid, u8 num)
 517 {
 518         return -EINVAL;
 519 }
 520
 521 static u8 ixgbe_dcbnl_getpfcstate(struct net_device *netdev)
 522 {
 523         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 524
 525         return adapter->dcb_cfg.pfc_mode_enable;
 526 }
 527
 528 static void ixgbe_dcbnl_setpfcstate(struct net_device *netdev, u8 state)
 529 {
 530         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 531
 532         adapter->temp_dcb_cfg.pfc_mode_enable = state;
 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, err = 0;
 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                 err = ixgbe_setup_tc(dev, max_tc);
 612
 613         if (err)
 614                 goto err_out;
 615
 616         for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
 617                 netdev_set_prio_tc_map(dev, i, ets->prio_tc[i]);
 618
 619         err = ixgbe_dcb_hw_ets(&adapter->hw, ets, max_frame);
 620 err_out:
 621         return err;
 622 }
 623
 624 static int ixgbe_dcbnl_ieee_getpfc(struct net_device *dev,
 625                                    struct ieee_pfc *pfc)
 626 {
 627         struct ixgbe_adapter *adapter = netdev_priv(dev);
 628         struct ieee_pfc *my_pfc = adapter->ixgbe_ieee_pfc;
 629         int i;
 630
 631         pfc->pfc_cap = adapter->dcb_cfg.num_tcs.pfc_tcs;
 632
 633         /* No IEEE PFC settings available */
 634         if (!my_pfc)
 635                 return 0;
 636
 637         pfc->pfc_en = my_pfc->pfc_en;
 638         pfc->mbc = my_pfc->mbc;
 639         pfc->delay = my_pfc->delay;
 640
 641         for (i = 0; i < MAX_TRAFFIC_CLASS; i++) {
 642                 pfc->requests[i] = adapter->stats.pxoffrxc[i];
 643                 pfc->indications[i] = adapter->stats.pxofftxc[i];
 644         }
 645
 646         return 0;
 647 }
 648
 649 static int ixgbe_dcbnl_ieee_setpfc(struct net_device *dev,
 650                                    struct ieee_pfc *pfc)
 651 {
 652         struct ixgbe_adapter *adapter = netdev_priv(dev);
 653         u8 *prio_tc;
 654
 655         if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
 656                 return -EINVAL;
 657
 658         if (!adapter->ixgbe_ieee_pfc) {
 659                 adapter->ixgbe_ieee_pfc = kmalloc(sizeof(struct ieee_pfc),
 660                                                   GFP_KERNEL);
 661                 if (!adapter->ixgbe_ieee_pfc)
 662                         return -ENOMEM;
 663         }
 664
 665         prio_tc = adapter->ixgbe_ieee_ets->prio_tc;
 666         memcpy(adapter->ixgbe_ieee_pfc, pfc, sizeof(*adapter->ixgbe_ieee_pfc));
 667         return ixgbe_dcb_hw_pfc_config(&adapter->hw, pfc->pfc_en, prio_tc);
 668 }
 669
 670 static int ixgbe_dcbnl_ieee_setapp(struct net_device *dev,
 671                                    struct dcb_app *app)
 672 {
 673         struct ixgbe_adapter *adapter = netdev_priv(dev);
 674         int err = -EINVAL;
 675
 676         if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
 677                 return err;
 678
 679         err = dcb_ieee_setapp(dev, app);
 680
 681 #ifdef IXGBE_FCOE
 682         if (!err && app->selector == IEEE_8021QAZ_APP_SEL_ETHERTYPE &&
 683             app->protocol == ETH_P_FCOE) {
 684                 u8 app_mask = dcb_ieee_getapp_mask(dev, app);
 685
 686                 if (app_mask & (1 << adapter->fcoe.up))
 687                         return err;
 688
 689                 adapter->fcoe.up = app->priority;
 690                 ixgbe_dcbnl_devreset(dev);
 691         }
 692 #endif
 693         return 0;
 694 }
 695
 696 static int ixgbe_dcbnl_ieee_delapp(struct net_device *dev,
 697                                    struct dcb_app *app)
 698 {
 699         struct ixgbe_adapter *adapter = netdev_priv(dev);
 700         int err;
 701
 702         if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
 703                 return -EINVAL;
 704
 705         err = dcb_ieee_delapp(dev, app);
 706
 707 #ifdef IXGBE_FCOE
 708         if (!err && app->selector == IEEE_8021QAZ_APP_SEL_ETHERTYPE &&
 709             app->protocol == ETH_P_FCOE) {
 710                 u8 app_mask = dcb_ieee_getapp_mask(dev, app);
 711
 712                 if (app_mask & (1 << adapter->fcoe.up))
 713                         return err;
 714
 715                 adapter->fcoe.up = app_mask ?
 716                                    ffs(app_mask) - 1 : IXGBE_FCOE_DEFTC;
 717                 ixgbe_dcbnl_devreset(dev);
 718         }
 719 #endif
 720         return err;
 721 }
 722
 723 static u8 ixgbe_dcbnl_getdcbx(struct net_device *dev)
 724 {
 725         struct ixgbe_adapter *adapter = netdev_priv(dev);
 726         return adapter->dcbx_cap;
 727 }
 728
 729 static u8 ixgbe_dcbnl_setdcbx(struct net_device *dev, u8 mode)
 730 {
 731         struct ixgbe_adapter *adapter = netdev_priv(dev);
 732         struct ieee_ets ets = {0};
 733         struct ieee_pfc pfc = {0};
 734         int err = 0;
 735
 736         /* no support for LLD_MANAGED modes or CEE+IEEE */
 737         if ((mode & DCB_CAP_DCBX_LLD_MANAGED) ||
 738             ((mode & DCB_CAP_DCBX_VER_IEEE) && (mode & DCB_CAP_DCBX_VER_CEE)) ||
 739             !(mode & DCB_CAP_DCBX_HOST))
 740                 return 1;
 741
 742         if (mode == adapter->dcbx_cap)
 743                 return 0;
 744
 745         adapter->dcbx_cap = mode;
 746
 747         /* ETS and PFC defaults */
 748         ets.ets_cap = 8;
 749         pfc.pfc_cap = 8;
 750
 751         if (mode & DCB_CAP_DCBX_VER_IEEE) {
 752                 ixgbe_dcbnl_ieee_setets(dev, &ets);
 753                 ixgbe_dcbnl_ieee_setpfc(dev, &pfc);
 754         } else if (mode & DCB_CAP_DCBX_VER_CEE) {
 755                 u8 mask = BIT_PFC | BIT_PG_TX | BIT_PG_RX | BIT_APP_UPCHG;
 756
 757                 adapter->dcb_set_bitmap |= mask;
 758                 ixgbe_dcbnl_set_all(dev);
 759         } else {
 760                 /* Drop into single TC mode strict priority as this
 761                  * indicates CEE and IEEE versions are disabled
 762                  */
 763                 ixgbe_dcbnl_ieee_setets(dev, &ets);
 764                 ixgbe_dcbnl_ieee_setpfc(dev, &pfc);
 765                 err = ixgbe_setup_tc(dev, 0);
 766         }
 767
 768         return err ? 1 : 0;
 769 }
 770
 771 const struct dcbnl_rtnl_ops dcbnl_ops = {
 772         .ieee_getets    = ixgbe_dcbnl_ieee_getets,
 773         .ieee_setets    = ixgbe_dcbnl_ieee_setets,
 774         .ieee_getpfc    = ixgbe_dcbnl_ieee_getpfc,
 775         .ieee_setpfc    = ixgbe_dcbnl_ieee_setpfc,
 776         .ieee_setapp    = ixgbe_dcbnl_ieee_setapp,
 777         .ieee_delapp    = ixgbe_dcbnl_ieee_delapp,
 778         .getstate       = ixgbe_dcbnl_get_state,
 779         .setstate       = ixgbe_dcbnl_set_state,
 780         .getpermhwaddr  = ixgbe_dcbnl_get_perm_hw_addr,
 781         .setpgtccfgtx   = ixgbe_dcbnl_set_pg_tc_cfg_tx,
 782         .setpgbwgcfgtx  = ixgbe_dcbnl_set_pg_bwg_cfg_tx,
 783         .setpgtccfgrx   = ixgbe_dcbnl_set_pg_tc_cfg_rx,
 784         .setpgbwgcfgrx  = ixgbe_dcbnl_set_pg_bwg_cfg_rx,
 785         .getpgtccfgtx   = ixgbe_dcbnl_get_pg_tc_cfg_tx,
 786         .getpgbwgcfgtx  = ixgbe_dcbnl_get_pg_bwg_cfg_tx,
 787         .getpgtccfgrx   = ixgbe_dcbnl_get_pg_tc_cfg_rx,
 788         .getpgbwgcfgrx  = ixgbe_dcbnl_get_pg_bwg_cfg_rx,
 789         .setpfccfg      = ixgbe_dcbnl_set_pfc_cfg,
 790         .getpfccfg      = ixgbe_dcbnl_get_pfc_cfg,
 791         .setall         = ixgbe_dcbnl_set_all,
 792         .getcap         = ixgbe_dcbnl_getcap,
 793         .getnumtcs      = ixgbe_dcbnl_getnumtcs,
 794         .setnumtcs      = ixgbe_dcbnl_setnumtcs,
 795         .getpfcstate    = ixgbe_dcbnl_getpfcstate,
 796         .setpfcstate    = ixgbe_dcbnl_setpfcstate,
 797         .getapp         = ixgbe_dcbnl_getapp,
 798         .getdcbx        = ixgbe_dcbnl_getdcbx,
 799         .setdcbx        = ixgbe_dcbnl_setdcbx,
 800 };