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

   1 /*******************************************************************************
   2
   3   Intel 10 Gigabit PCI Express Linux driver
   4   Copyright(c) 1999 - 2011 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         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 116
 117         /* Fail command if not in CEE mode */
 118         if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE))
 119                 return 1;
 120
 121         /* verify there is something to do, if not then exit */
 122         if (!!state != !(adapter->flags & IXGBE_FLAG_DCB_ENABLED))
 123                 return err;
 124
 125         if (state > 0)
 126                 err = ixgbe_setup_tc(netdev, MAX_TRAFFIC_CLASS);
 127         else
 128                 err = ixgbe_setup_tc(netdev, 0);
 129
 130         return err;
 131 }
 132
 133 static void ixgbe_dcbnl_get_perm_hw_addr(struct net_device *netdev,
 134                                          u8 *perm_addr)
 135 {
 136         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 137         int i, j;
 138
 139         memset(perm_addr, 0xff, MAX_ADDR_LEN);
 140
 141         for (i = 0; i < netdev->addr_len; i++)
 142                 perm_addr[i] = adapter->hw.mac.perm_addr[i];
 143
 144         switch (adapter->hw.mac.type) {
 145         case ixgbe_mac_82599EB:
 146         case ixgbe_mac_X540:
 147                 for (j = 0; j < netdev->addr_len; j++, i++)
 148                         perm_addr[i] = adapter->hw.mac.san_addr[j];
 149                 break;
 150         default:
 151                 break;
 152         }
 153 }
 154
 155 static void ixgbe_dcbnl_set_pg_tc_cfg_tx(struct net_device *netdev, int tc,
 156                                          u8 prio, u8 bwg_id, u8 bw_pct,
 157                                          u8 up_map)
 158 {
 159         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 160
 161         if (prio != DCB_ATTR_VALUE_UNDEFINED)
 162                 adapter->temp_dcb_cfg.tc_config[tc].path[0].prio_type = prio;
 163         if (bwg_id != DCB_ATTR_VALUE_UNDEFINED)
 164                 adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_id = bwg_id;
 165         if (bw_pct != DCB_ATTR_VALUE_UNDEFINED)
 166                 adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_percent =
 167                         bw_pct;
 168         if (up_map != DCB_ATTR_VALUE_UNDEFINED)
 169                 adapter->temp_dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap =
 170                         up_map;
 171
 172         if ((adapter->temp_dcb_cfg.tc_config[tc].path[0].prio_type !=
 173              adapter->dcb_cfg.tc_config[tc].path[0].prio_type) ||
 174             (adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_id !=
 175              adapter->dcb_cfg.tc_config[tc].path[0].bwg_id) ||
 176             (adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_percent !=
 177              adapter->dcb_cfg.tc_config[tc].path[0].bwg_percent) ||
 178             (adapter->temp_dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap !=
 179              adapter->dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap))
 180                 adapter->dcb_set_bitmap |= BIT_PG_TX;
 181 }
 182
 183 static void ixgbe_dcbnl_set_pg_bwg_cfg_tx(struct net_device *netdev, int bwg_id,
 184                                           u8 bw_pct)
 185 {
 186         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 187
 188         adapter->temp_dcb_cfg.bw_percentage[0][bwg_id] = bw_pct;
 189
 190         if (adapter->temp_dcb_cfg.bw_percentage[0][bwg_id] !=
 191             adapter->dcb_cfg.bw_percentage[0][bwg_id])
 192                 adapter->dcb_set_bitmap |= BIT_PG_TX;
 193 }
 194
 195 static void ixgbe_dcbnl_set_pg_tc_cfg_rx(struct net_device *netdev, int tc,
 196                                          u8 prio, u8 bwg_id, u8 bw_pct,
 197                                          u8 up_map)
 198 {
 199         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 200
 201         if (prio != DCB_ATTR_VALUE_UNDEFINED)
 202                 adapter->temp_dcb_cfg.tc_config[tc].path[1].prio_type = prio;
 203         if (bwg_id != DCB_ATTR_VALUE_UNDEFINED)
 204                 adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_id = bwg_id;
 205         if (bw_pct != DCB_ATTR_VALUE_UNDEFINED)
 206                 adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_percent =
 207                         bw_pct;
 208         if (up_map != DCB_ATTR_VALUE_UNDEFINED)
 209                 adapter->temp_dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap =
 210                         up_map;
 211
 212         if ((adapter->temp_dcb_cfg.tc_config[tc].path[1].prio_type !=
 213              adapter->dcb_cfg.tc_config[tc].path[1].prio_type) ||
 214             (adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_id !=
 215              adapter->dcb_cfg.tc_config[tc].path[1].bwg_id) ||
 216             (adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_percent !=
 217              adapter->dcb_cfg.tc_config[tc].path[1].bwg_percent) ||
 218             (adapter->temp_dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap !=
 219              adapter->dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap))
 220                 adapter->dcb_set_bitmap |= BIT_PG_RX;
 221 }
 222
 223 static void ixgbe_dcbnl_set_pg_bwg_cfg_rx(struct net_device *netdev, int bwg_id,
 224                                           u8 bw_pct)
 225 {
 226         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 227
 228         adapter->temp_dcb_cfg.bw_percentage[1][bwg_id] = bw_pct;
 229
 230         if (adapter->temp_dcb_cfg.bw_percentage[1][bwg_id] !=
 231             adapter->dcb_cfg.bw_percentage[1][bwg_id])
 232                 adapter->dcb_set_bitmap |= BIT_PG_RX;
 233 }
 234
 235 static void ixgbe_dcbnl_get_pg_tc_cfg_tx(struct net_device *netdev, int tc,
 236                                          u8 *prio, u8 *bwg_id, u8 *bw_pct,
 237                                          u8 *up_map)
 238 {
 239         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 240
 241         *prio = adapter->dcb_cfg.tc_config[tc].path[0].prio_type;
 242         *bwg_id = adapter->dcb_cfg.tc_config[tc].path[0].bwg_id;
 243         *bw_pct = adapter->dcb_cfg.tc_config[tc].path[0].bwg_percent;
 244         *up_map = adapter->dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap;
 245 }
 246
 247 static void ixgbe_dcbnl_get_pg_bwg_cfg_tx(struct net_device *netdev, int bwg_id,
 248                                           u8 *bw_pct)
 249 {
 250         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 251
 252         *bw_pct = adapter->dcb_cfg.bw_percentage[0][bwg_id];
 253 }
 254
 255 static void ixgbe_dcbnl_get_pg_tc_cfg_rx(struct net_device *netdev, int tc,
 256                                          u8 *prio, u8 *bwg_id, u8 *bw_pct,
 257                                          u8 *up_map)
 258 {
 259         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 260
 261         *prio = adapter->dcb_cfg.tc_config[tc].path[1].prio_type;
 262         *bwg_id = adapter->dcb_cfg.tc_config[tc].path[1].bwg_id;
 263         *bw_pct = adapter->dcb_cfg.tc_config[tc].path[1].bwg_percent;
 264         *up_map = adapter->dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap;
 265 }
 266
 267 static void ixgbe_dcbnl_get_pg_bwg_cfg_rx(struct net_device *netdev, int bwg_id,
 268                                           u8 *bw_pct)
 269 {
 270         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 271
 272         *bw_pct = adapter->dcb_cfg.bw_percentage[1][bwg_id];
 273 }
 274
 275 static void ixgbe_dcbnl_set_pfc_cfg(struct net_device *netdev, int priority,
 276                                     u8 setting)
 277 {
 278         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 279
 280         adapter->temp_dcb_cfg.tc_config[priority].dcb_pfc = setting;
 281         if (adapter->temp_dcb_cfg.tc_config[priority].dcb_pfc !=
 282             adapter->dcb_cfg.tc_config[priority].dcb_pfc) {
 283                 adapter->dcb_set_bitmap |= BIT_PFC;
 284                 adapter->temp_dcb_cfg.pfc_mode_enable = true;
 285         }
 286 }
 287
 288 static void ixgbe_dcbnl_get_pfc_cfg(struct net_device *netdev, int priority,
 289                                     u8 *setting)
 290 {
 291         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 292
 293         *setting = adapter->dcb_cfg.tc_config[priority].dcb_pfc;
 294 }
 295
 296 static u8 ixgbe_dcbnl_set_all(struct net_device *netdev)
 297 {
 298         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 299         int ret;
 300 #ifdef IXGBE_FCOE
 301         struct dcb_app app = {
 302                               .selector = DCB_APP_IDTYPE_ETHTYPE,
 303                               .protocol = ETH_P_FCOE,
 304                              };
 305         u8 up = dcb_getapp(netdev, &app);
 306 #endif
 307
 308         /* Fail command if not in CEE mode */
 309         if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE))
 310                 return 1;
 311
 312         ret = ixgbe_copy_dcb_cfg(&adapter->temp_dcb_cfg, &adapter->dcb_cfg,
 313                                  MAX_TRAFFIC_CLASS);
 314         if (ret)
 315                 return DCB_NO_HW_CHG;
 316
 317 #ifdef IXGBE_FCOE
 318         if (up && (up != (1 << adapter->fcoe.up)))
 319                 adapter->dcb_set_bitmap |= BIT_APP_UPCHG;
 320
 321         /*
 322          * Only take down the adapter if an app change occurred. FCoE
 323          * may shuffle tx rings in this case and this can not be done
 324          * without a reset currently.
 325          */
 326         if (adapter->dcb_set_bitmap & BIT_APP_UPCHG) {
 327                 while (test_and_set_bit(__IXGBE_RESETTING, &adapter->state))
 328                         usleep_range(1000, 2000);
 329
 330                 adapter->fcoe.up = ffs(up) - 1;
 331
 332                 if (netif_running(netdev))
 333                         netdev->netdev_ops->ndo_stop(netdev);
 334                 ixgbe_clear_interrupt_scheme(adapter);
 335         }
 336 #endif
 337
 338         if (adapter->dcb_cfg.pfc_mode_enable) {
 339                 switch (adapter->hw.mac.type) {
 340                 case ixgbe_mac_82599EB:
 341                 case ixgbe_mac_X540:
 342                         if (adapter->hw.fc.current_mode != ixgbe_fc_pfc)
 343                                 adapter->last_lfc_mode =
 344                                                   adapter->hw.fc.current_mode;
 345                         break;
 346                 default:
 347                         break;
 348                 }
 349                 adapter->hw.fc.requested_mode = ixgbe_fc_pfc;
 350         } else {
 351                 switch (adapter->hw.mac.type) {
 352                 case ixgbe_mac_82598EB:
 353                         adapter->hw.fc.requested_mode = ixgbe_fc_none;
 354                         break;
 355                 case ixgbe_mac_82599EB:
 356                 case ixgbe_mac_X540:
 357                         adapter->hw.fc.requested_mode = adapter->last_lfc_mode;
 358                         break;
 359                 default:
 360                         break;
 361                 }
 362         }
 363
 364 #ifdef IXGBE_FCOE
 365         if (adapter->dcb_set_bitmap & BIT_APP_UPCHG) {
 366                 ixgbe_init_interrupt_scheme(adapter);
 367                 if (netif_running(netdev))
 368                         netdev->netdev_ops->ndo_open(netdev);
 369                 ret = DCB_HW_CHG_RST;
 370         }
 371 #endif
 372
 373         if (adapter->dcb_set_bitmap & BIT_PFC) {
 374                 u8 pfc_en;
 375                 ixgbe_dcb_unpack_pfc(&adapter->dcb_cfg, &pfc_en);
 376                 ixgbe_dcb_hw_pfc_config(&adapter->hw, pfc_en);
 377                 ret = DCB_HW_CHG;
 378         }
 379
 380         if (adapter->dcb_set_bitmap & (BIT_PG_TX|BIT_PG_RX)) {
 381                 u16 refill[MAX_TRAFFIC_CLASS], max[MAX_TRAFFIC_CLASS];
 382                 u8 bwg_id[MAX_TRAFFIC_CLASS], prio_type[MAX_TRAFFIC_CLASS];
 383                 /* Priority to TC mapping in CEE case default to 1:1 */
 384                 u8 prio_tc[MAX_TRAFFIC_CLASS] = {0, 1, 2, 3, 4, 5, 6, 7};
 385                 int max_frame = adapter->netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
 386
 387 #ifdef IXGBE_FCOE
 388                 if (adapter->netdev->features & NETIF_F_FCOE_MTU)
 389                         max_frame = max(max_frame, IXGBE_FCOE_JUMBO_FRAME_SIZE);
 390 #endif
 391
 392                 ixgbe_dcb_calculate_tc_credits(&adapter->hw, &adapter->dcb_cfg,
 393                                                max_frame, DCB_TX_CONFIG);
 394                 ixgbe_dcb_calculate_tc_credits(&adapter->hw, &adapter->dcb_cfg,
 395                                                max_frame, DCB_RX_CONFIG);
 396
 397                 ixgbe_dcb_unpack_refill(&adapter->dcb_cfg,
 398                                         DCB_TX_CONFIG, refill);
 399                 ixgbe_dcb_unpack_max(&adapter->dcb_cfg, max);
 400                 ixgbe_dcb_unpack_bwgid(&adapter->dcb_cfg,
 401                                        DCB_TX_CONFIG, bwg_id);
 402                 ixgbe_dcb_unpack_prio(&adapter->dcb_cfg,
 403                                       DCB_TX_CONFIG, prio_type);
 404
 405                 ixgbe_dcb_hw_ets_config(&adapter->hw, refill, max,
 406                                         bwg_id, prio_type, prio_tc);
 407         }
 408
 409         if (adapter->dcb_cfg.pfc_mode_enable)
 410                 adapter->hw.fc.current_mode = ixgbe_fc_pfc;
 411
 412         if (adapter->dcb_set_bitmap & BIT_APP_UPCHG)
 413                 clear_bit(__IXGBE_RESETTING, &adapter->state);
 414         adapter->dcb_set_bitmap = 0x00;
 415         return ret;
 416 }
 417
 418 static u8 ixgbe_dcbnl_getcap(struct net_device *netdev, int capid, u8 *cap)
 419 {
 420         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 421
 422         switch (capid) {
 423         case DCB_CAP_ATTR_PG:
 424                 *cap = true;
 425                 break;
 426         case DCB_CAP_ATTR_PFC:
 427                 *cap = true;
 428                 break;
 429         case DCB_CAP_ATTR_UP2TC:
 430                 *cap = false;
 431                 break;
 432         case DCB_CAP_ATTR_PG_TCS:
 433                 *cap = 0x80;
 434                 break;
 435         case DCB_CAP_ATTR_PFC_TCS:
 436                 *cap = 0x80;
 437                 break;
 438         case DCB_CAP_ATTR_GSP:
 439                 *cap = true;
 440                 break;
 441         case DCB_CAP_ATTR_BCN:
 442                 *cap = false;
 443                 break;
 444         case DCB_CAP_ATTR_DCBX:
 445                 *cap = adapter->dcbx_cap;
 446                 break;
 447         default:
 448                 *cap = false;
 449                 break;
 450         }
 451
 452         return 0;
 453 }
 454
 455 static u8 ixgbe_dcbnl_getnumtcs(struct net_device *netdev, int tcid, u8 *num)
 456 {
 457         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 458         u8 rval = 0;
 459
 460         if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
 461                 switch (tcid) {
 462                 case DCB_NUMTCS_ATTR_PG:
 463                         *num = MAX_TRAFFIC_CLASS;
 464                         break;
 465                 case DCB_NUMTCS_ATTR_PFC:
 466                         *num = MAX_TRAFFIC_CLASS;
 467                         break;
 468                 default:
 469                         rval = -EINVAL;
 470                         break;
 471                 }
 472         } else {
 473                 rval = -EINVAL;
 474         }
 475
 476         return rval;
 477 }
 478
 479 static u8 ixgbe_dcbnl_setnumtcs(struct net_device *netdev, int tcid, u8 num)
 480 {
 481         return -EINVAL;
 482 }
 483
 484 static u8 ixgbe_dcbnl_getpfcstate(struct net_device *netdev)
 485 {
 486         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 487
 488         return adapter->dcb_cfg.pfc_mode_enable;
 489 }
 490
 491 static void ixgbe_dcbnl_setpfcstate(struct net_device *netdev, u8 state)
 492 {
 493         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 494
 495         adapter->temp_dcb_cfg.pfc_mode_enable = state;
 496         if (adapter->temp_dcb_cfg.pfc_mode_enable !=
 497                 adapter->dcb_cfg.pfc_mode_enable)
 498                 adapter->dcb_set_bitmap |= BIT_PFC;
 499 }
 500
 501 /**
 502  * ixgbe_dcbnl_getapp - retrieve the DCBX application user priority
 503  * @netdev : the corresponding netdev
 504  * @idtype : identifies the id as ether type or TCP/UDP port number
 505  * @id: id is either ether type or TCP/UDP port number
 506  *
 507  * Returns : on success, returns a non-zero 802.1p user priority bitmap
 508  * otherwise returns 0 as the invalid user priority bitmap to indicate an
 509  * error.
 510  */
 511 static u8 ixgbe_dcbnl_getapp(struct net_device *netdev, u8 idtype, u16 id)
 512 {
 513         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 514         struct dcb_app app = {
 515                                 .selector = idtype,
 516                                 .protocol = id,
 517                              };
 518
 519         if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE))
 520                 return 0;
 521
 522         return dcb_getapp(netdev, &app);
 523 }
 524
 525 static int ixgbe_dcbnl_ieee_getets(struct net_device *dev,
 526                                    struct ieee_ets *ets)
 527 {
 528         struct ixgbe_adapter *adapter = netdev_priv(dev);
 529         struct ieee_ets *my_ets = adapter->ixgbe_ieee_ets;
 530
 531         /* No IEEE PFC settings available */
 532         if (!my_ets)
 533                 return -EINVAL;
 534
 535         ets->ets_cap = MAX_TRAFFIC_CLASS;
 536         ets->cbs = my_ets->cbs;
 537         memcpy(ets->tc_tx_bw, my_ets->tc_tx_bw, sizeof(ets->tc_tx_bw));
 538         memcpy(ets->tc_rx_bw, my_ets->tc_rx_bw, sizeof(ets->tc_rx_bw));
 539         memcpy(ets->tc_tsa, my_ets->tc_tsa, sizeof(ets->tc_tsa));
 540         memcpy(ets->prio_tc, my_ets->prio_tc, sizeof(ets->prio_tc));
 541         return 0;
 542 }
 543
 544 static int ixgbe_dcbnl_ieee_setets(struct net_device *dev,
 545                                    struct ieee_ets *ets)
 546 {
 547         struct ixgbe_adapter *adapter = netdev_priv(dev);
 548         int max_frame = dev->mtu + ETH_HLEN + ETH_FCS_LEN;
 549         int i;
 550         __u8 max_tc = 0;
 551
 552         if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
 553                 return -EINVAL;
 554
 555         if (!adapter->ixgbe_ieee_ets) {
 556                 adapter->ixgbe_ieee_ets = kmalloc(sizeof(struct ieee_ets),
 557                                                   GFP_KERNEL);
 558                 if (!adapter->ixgbe_ieee_ets)
 559                         return -ENOMEM;
 560         }
 561
 562         memcpy(adapter->ixgbe_ieee_ets, ets, sizeof(*adapter->ixgbe_ieee_ets));
 563
 564         for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
 565                 if (ets->prio_tc[i] > max_tc)
 566                         max_tc = ets->prio_tc[i];
 567         }
 568
 569         if (max_tc)
 570                 max_tc++;
 571
 572         if (max_tc != netdev_get_num_tc(dev))
 573                 ixgbe_setup_tc(dev, max_tc);
 574
 575         for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
 576                 netdev_set_prio_tc_map(dev, i, ets->prio_tc[i]);
 577
 578         return ixgbe_dcb_hw_ets(&adapter->hw, ets, max_frame);
 579 }
 580
 581 static int ixgbe_dcbnl_ieee_getpfc(struct net_device *dev,
 582                                    struct ieee_pfc *pfc)
 583 {
 584         struct ixgbe_adapter *adapter = netdev_priv(dev);
 585         struct ieee_pfc *my_pfc = adapter->ixgbe_ieee_pfc;
 586         int i;
 587
 588         /* No IEEE PFC settings available */
 589         if (!my_pfc)
 590                 return -EINVAL;
 591
 592         pfc->pfc_cap = MAX_TRAFFIC_CLASS;
 593         pfc->pfc_en = my_pfc->pfc_en;
 594         pfc->mbc = my_pfc->mbc;
 595         pfc->delay = my_pfc->delay;
 596
 597         for (i = 0; i < MAX_TRAFFIC_CLASS; i++) {
 598                 pfc->requests[i] = adapter->stats.pxoffrxc[i];
 599                 pfc->indications[i] = adapter->stats.pxofftxc[i];
 600         }
 601
 602         return 0;
 603 }
 604
 605 static int ixgbe_dcbnl_ieee_setpfc(struct net_device *dev,
 606                                    struct ieee_pfc *pfc)
 607 {
 608         struct ixgbe_adapter *adapter = netdev_priv(dev);
 609
 610         if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
 611                 return -EINVAL;
 612
 613         if (!adapter->ixgbe_ieee_pfc) {
 614                 adapter->ixgbe_ieee_pfc = kmalloc(sizeof(struct ieee_pfc),
 615                                                   GFP_KERNEL);
 616                 if (!adapter->ixgbe_ieee_pfc)
 617                         return -ENOMEM;
 618         }
 619
 620         memcpy(adapter->ixgbe_ieee_pfc, pfc, sizeof(*adapter->ixgbe_ieee_pfc));
 621         return ixgbe_dcb_hw_pfc_config(&adapter->hw, pfc->pfc_en);
 622 }
 623
 624 #ifdef IXGBE_FCOE
 625 static void ixgbe_dcbnl_devreset(struct net_device *dev)
 626 {
 627         struct ixgbe_adapter *adapter = netdev_priv(dev);
 628
 629         if (netif_running(dev))
 630                 dev->netdev_ops->ndo_stop(dev);
 631
 632         ixgbe_clear_interrupt_scheme(adapter);
 633         ixgbe_init_interrupt_scheme(adapter);
 634
 635         if (netif_running(dev))
 636                 dev->netdev_ops->ndo_open(dev);
 637 }
 638 #endif
 639
 640 static int ixgbe_dcbnl_ieee_setapp(struct net_device *dev,
 641                                    struct dcb_app *app)
 642 {
 643         struct ixgbe_adapter *adapter = netdev_priv(dev);
 644         int err = -EINVAL;
 645
 646         if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
 647                 return err;
 648
 649         err = dcb_ieee_setapp(dev, app);
 650
 651 #ifdef IXGBE_FCOE
 652         if (!err && app->selector == IEEE_8021QAZ_APP_SEL_ETHERTYPE &&
 653             app->protocol == ETH_P_FCOE) {
 654                 u8 app_mask = dcb_ieee_getapp_mask(dev, app);
 655
 656                 if (app_mask & (1 << adapter->fcoe.up))
 657                         return err;
 658
 659                 adapter->fcoe.up = app->priority;
 660                 ixgbe_dcbnl_devreset(dev);
 661         }
 662 #endif
 663         return 0;
 664 }
 665
 666 static int ixgbe_dcbnl_ieee_delapp(struct net_device *dev,
 667                                    struct dcb_app *app)
 668 {
 669         struct ixgbe_adapter *adapter = netdev_priv(dev);
 670         int err;
 671
 672         if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
 673                 return -EINVAL;
 674
 675         err = dcb_ieee_delapp(dev, app);
 676
 677 #ifdef IXGBE_FCOE
 678         if (!err && app->selector == IEEE_8021QAZ_APP_SEL_ETHERTYPE &&
 679             app->protocol == ETH_P_FCOE) {
 680                 u8 app_mask = dcb_ieee_getapp_mask(dev, app);
 681
 682                 if (app_mask & (1 << adapter->fcoe.up))
 683                         return err;
 684
 685                 adapter->fcoe.up = app_mask ?
 686                                    ffs(app_mask) - 1 : IXGBE_FCOE_DEFTC;
 687                 ixgbe_dcbnl_devreset(dev);
 688         }
 689 #endif
 690         return err;
 691 }
 692
 693 static u8 ixgbe_dcbnl_getdcbx(struct net_device *dev)
 694 {
 695         struct ixgbe_adapter *adapter = netdev_priv(dev);
 696         return adapter->dcbx_cap;
 697 }
 698
 699 static u8 ixgbe_dcbnl_setdcbx(struct net_device *dev, u8 mode)
 700 {
 701         struct ixgbe_adapter *adapter = netdev_priv(dev);
 702         struct ieee_ets ets = {0};
 703         struct ieee_pfc pfc = {0};
 704
 705         /* no support for LLD_MANAGED modes or CEE+IEEE */
 706         if ((mode & DCB_CAP_DCBX_LLD_MANAGED) ||
 707             ((mode & DCB_CAP_DCBX_VER_IEEE) && (mode & DCB_CAP_DCBX_VER_CEE)) ||
 708             !(mode & DCB_CAP_DCBX_HOST))
 709                 return 1;
 710
 711         if (mode == adapter->dcbx_cap)
 712                 return 0;
 713
 714         adapter->dcbx_cap = mode;
 715
 716         /* ETS and PFC defaults */
 717         ets.ets_cap = 8;
 718         pfc.pfc_cap = 8;
 719
 720         if (mode & DCB_CAP_DCBX_VER_IEEE) {
 721                 ixgbe_dcbnl_ieee_setets(dev, &ets);
 722                 ixgbe_dcbnl_ieee_setpfc(dev, &pfc);
 723         } else if (mode & DCB_CAP_DCBX_VER_CEE) {
 724                 adapter->dcb_set_bitmap |= (BIT_PFC & BIT_PG_TX & BIT_PG_RX);
 725                 ixgbe_dcbnl_set_all(dev);
 726         } else {
 727                 /* Drop into single TC mode strict priority as this
 728                  * indicates CEE and IEEE versions are disabled
 729                  */
 730                 ixgbe_dcbnl_ieee_setets(dev, &ets);
 731                 ixgbe_dcbnl_ieee_setpfc(dev, &pfc);
 732                 ixgbe_setup_tc(dev, 0);
 733         }
 734
 735         return 0;
 736 }
 737
 738 const struct dcbnl_rtnl_ops dcbnl_ops = {
 739         .ieee_getets    = ixgbe_dcbnl_ieee_getets,
 740         .ieee_setets    = ixgbe_dcbnl_ieee_setets,
 741         .ieee_getpfc    = ixgbe_dcbnl_ieee_getpfc,
 742         .ieee_setpfc    = ixgbe_dcbnl_ieee_setpfc,
 743         .ieee_setapp    = ixgbe_dcbnl_ieee_setapp,
 744         .ieee_delapp    = ixgbe_dcbnl_ieee_delapp,
 745         .getstate       = ixgbe_dcbnl_get_state,
 746         .setstate       = ixgbe_dcbnl_set_state,
 747         .getpermhwaddr  = ixgbe_dcbnl_get_perm_hw_addr,
 748         .setpgtccfgtx   = ixgbe_dcbnl_set_pg_tc_cfg_tx,
 749         .setpgbwgcfgtx  = ixgbe_dcbnl_set_pg_bwg_cfg_tx,
 750         .setpgtccfgrx   = ixgbe_dcbnl_set_pg_tc_cfg_rx,
 751         .setpgbwgcfgrx  = ixgbe_dcbnl_set_pg_bwg_cfg_rx,
 752         .getpgtccfgtx   = ixgbe_dcbnl_get_pg_tc_cfg_tx,
 753         .getpgbwgcfgtx  = ixgbe_dcbnl_get_pg_bwg_cfg_tx,
 754         .getpgtccfgrx   = ixgbe_dcbnl_get_pg_tc_cfg_rx,
 755         .getpgbwgcfgrx  = ixgbe_dcbnl_get_pg_bwg_cfg_rx,
 756         .setpfccfg      = ixgbe_dcbnl_set_pfc_cfg,
 757         .getpfccfg      = ixgbe_dcbnl_get_pfc_cfg,
 758         .setall         = ixgbe_dcbnl_set_all,
 759         .getcap         = ixgbe_dcbnl_getcap,
 760         .getnumtcs      = ixgbe_dcbnl_getnumtcs,
 761         .setnumtcs      = ixgbe_dcbnl_setnumtcs,
 762         .getpfcstate    = ixgbe_dcbnl_getpfcstate,
 763         .setpfcstate    = ixgbe_dcbnl_setpfcstate,
 764         .getapp         = ixgbe_dcbnl_getapp,
 765         .getdcbx        = ixgbe_dcbnl_getdcbx,
 766         .setdcbx        = ixgbe_dcbnl_setdcbx,
 767 };