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

   1 /*******************************************************************************
   2
   3   Intel 10 Gigabit PCI Express Linux driver
   4   Copyright(c) 1999 - 2014 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 #include "ixgbe_sriov.h"
  34
  35 /* Callbacks for DCB netlink in the kernel */
  36 #define BIT_DCB_MODE    0x01
  37 #define BIT_PFC         0x02
  38 #define BIT_PG_RX       0x04
  39 #define BIT_PG_TX       0x08
  40 #define BIT_APP_UPCHG   0x10
  41 #define BIT_LINKSPEED   0x80
  42
  43 /* Responses for the DCB_C_SET_ALL command */
  44 #define DCB_HW_CHG_RST  0  /* DCB configuration changed with reset */
  45 #define DCB_NO_HW_CHG   1  /* DCB configuration did not change */
  46 #define DCB_HW_CHG      2  /* DCB configuration changed, no reset */
  47
  48 static int ixgbe_copy_dcb_cfg(struct ixgbe_adapter *adapter, int tc_max)
  49 {
  50         struct ixgbe_dcb_config *scfg = &adapter->temp_dcb_cfg;
  51         struct ixgbe_dcb_config *dcfg = &adapter->dcb_cfg;
  52         struct tc_configuration *src = NULL;
  53         struct tc_configuration *dst = NULL;
  54         int i, j;
  55         int tx = DCB_TX_CONFIG;
  56         int rx = DCB_RX_CONFIG;
  57         int changes = 0;
  58 #ifdef IXGBE_FCOE
  59         struct dcb_app app = {
  60                               .selector = DCB_APP_IDTYPE_ETHTYPE,
  61                               .protocol = ETH_P_FCOE,
  62                              };
  63         u8 up = dcb_getapp(adapter->netdev, &app);
  64
  65         if (up && !(up & (1 << adapter->fcoe.up)))
  66                 changes |= BIT_APP_UPCHG;
  67 #endif
  68
  69         for (i = DCB_PG_ATTR_TC_0; i < tc_max + DCB_PG_ATTR_TC_0; i++) {
  70                 src = &scfg->tc_config[i - DCB_PG_ATTR_TC_0];
  71                 dst = &dcfg->tc_config[i - DCB_PG_ATTR_TC_0];
  72
  73                 if (dst->path[tx].prio_type != src->path[tx].prio_type) {
  74                         dst->path[tx].prio_type = src->path[tx].prio_type;
  75                         changes |= BIT_PG_TX;
  76                 }
  77
  78                 if (dst->path[tx].bwg_id != src->path[tx].bwg_id) {
  79                         dst->path[tx].bwg_id = src->path[tx].bwg_id;
  80                         changes |= BIT_PG_TX;
  81                 }
  82
  83                 if (dst->path[tx].bwg_percent != src->path[tx].bwg_percent) {
  84                         dst->path[tx].bwg_percent = src->path[tx].bwg_percent;
  85                         changes |= BIT_PG_TX;
  86                 }
  87
  88                 if (dst->path[tx].up_to_tc_bitmap !=
  89                                 src->path[tx].up_to_tc_bitmap) {
  90                         dst->path[tx].up_to_tc_bitmap =
  91                                 src->path[tx].up_to_tc_bitmap;
  92                         changes |= (BIT_PG_TX | BIT_PFC | BIT_APP_UPCHG);
  93                 }
  94
  95                 if (dst->path[rx].prio_type != src->path[rx].prio_type) {
  96                         dst->path[rx].prio_type = src->path[rx].prio_type;
  97                         changes |= BIT_PG_RX;
  98                 }
  99
 100                 if (dst->path[rx].bwg_id != src->path[rx].bwg_id) {
 101                         dst->path[rx].bwg_id = src->path[rx].bwg_id;
 102                         changes |= BIT_PG_RX;
 103                 }
 104
 105                 if (dst->path[rx].bwg_percent != src->path[rx].bwg_percent) {
 106                         dst->path[rx].bwg_percent = src->path[rx].bwg_percent;
 107                         changes |= BIT_PG_RX;
 108                 }
 109
 110                 if (dst->path[rx].up_to_tc_bitmap !=
 111                                 src->path[rx].up_to_tc_bitmap) {
 112                         dst->path[rx].up_to_tc_bitmap =
 113                                 src->path[rx].up_to_tc_bitmap;
 114                         changes |= (BIT_PG_RX | BIT_PFC | BIT_APP_UPCHG);
 115                 }
 116         }
 117
 118         for (i = DCB_PG_ATTR_BW_ID_0; i < DCB_PG_ATTR_BW_ID_MAX; i++) {
 119                 j = i - DCB_PG_ATTR_BW_ID_0;
 120                 if (dcfg->bw_percentage[tx][j] != scfg->bw_percentage[tx][j]) {
 121                         dcfg->bw_percentage[tx][j] = scfg->bw_percentage[tx][j];
 122                         changes |= BIT_PG_TX;
 123                 }
 124                 if (dcfg->bw_percentage[rx][j] != scfg->bw_percentage[rx][j]) {
 125                         dcfg->bw_percentage[rx][j] = scfg->bw_percentage[rx][j];
 126                         changes |= BIT_PG_RX;
 127                 }
 128         }
 129
 130         for (i = DCB_PFC_UP_ATTR_0; i < DCB_PFC_UP_ATTR_MAX; i++) {
 131                 j = i - DCB_PFC_UP_ATTR_0;
 132                 if (dcfg->tc_config[j].dcb_pfc != scfg->tc_config[j].dcb_pfc) {
 133                         dcfg->tc_config[j].dcb_pfc = scfg->tc_config[j].dcb_pfc;
 134                         changes |= BIT_PFC;
 135                 }
 136         }
 137
 138         if (dcfg->pfc_mode_enable != scfg->pfc_mode_enable) {
 139                 dcfg->pfc_mode_enable = scfg->pfc_mode_enable;
 140                 changes |= BIT_PFC;
 141         }
 142
 143         return changes;
 144 }
 145
 146 static u8 ixgbe_dcbnl_get_state(struct net_device *netdev)
 147 {
 148         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 149
 150         return !!(adapter->flags & IXGBE_FLAG_DCB_ENABLED);
 151 }
 152
 153 static u8 ixgbe_dcbnl_set_state(struct net_device *netdev, u8 state)
 154 {
 155         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 156
 157         /* Fail command if not in CEE mode */
 158         if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE))
 159                 return 1;
 160
 161         /* verify there is something to do, if not then exit */
 162         if (!state == !(adapter->flags & IXGBE_FLAG_DCB_ENABLED))
 163                 return 0;
 164
 165         return !!ixgbe_setup_tc(netdev,
 166                                 state ? adapter->dcb_cfg.num_tcs.pg_tcs : 0);
 167 }
 168
 169 static void ixgbe_dcbnl_get_perm_hw_addr(struct net_device *netdev,
 170                                          u8 *perm_addr)
 171 {
 172         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 173         int i, j;
 174
 175         memset(perm_addr, 0xff, MAX_ADDR_LEN);
 176
 177         for (i = 0; i < netdev->addr_len; i++)
 178                 perm_addr[i] = adapter->hw.mac.perm_addr[i];
 179
 180         switch (adapter->hw.mac.type) {
 181         case ixgbe_mac_82599EB:
 182         case ixgbe_mac_X540:
 183                 for (j = 0; j < netdev->addr_len; j++, i++)
 184                         perm_addr[i] = adapter->hw.mac.san_addr[j];
 185                 break;
 186         default:
 187                 break;
 188         }
 189 }
 190
 191 static void ixgbe_dcbnl_set_pg_tc_cfg_tx(struct net_device *netdev, int tc,
 192                                          u8 prio, u8 bwg_id, u8 bw_pct,
 193                                          u8 up_map)
 194 {
 195         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 196
 197         if (prio != DCB_ATTR_VALUE_UNDEFINED)
 198                 adapter->temp_dcb_cfg.tc_config[tc].path[0].prio_type = prio;
 199         if (bwg_id != DCB_ATTR_VALUE_UNDEFINED)
 200                 adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_id = bwg_id;
 201         if (bw_pct != DCB_ATTR_VALUE_UNDEFINED)
 202                 adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_percent =
 203                         bw_pct;
 204         if (up_map != DCB_ATTR_VALUE_UNDEFINED)
 205                 adapter->temp_dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap =
 206                         up_map;
 207 }
 208
 209 static void ixgbe_dcbnl_set_pg_bwg_cfg_tx(struct net_device *netdev, int bwg_id,
 210                                           u8 bw_pct)
 211 {
 212         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 213
 214         adapter->temp_dcb_cfg.bw_percentage[0][bwg_id] = bw_pct;
 215 }
 216
 217 static void ixgbe_dcbnl_set_pg_tc_cfg_rx(struct net_device *netdev, int tc,
 218                                          u8 prio, u8 bwg_id, u8 bw_pct,
 219                                          u8 up_map)
 220 {
 221         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 222
 223         if (prio != DCB_ATTR_VALUE_UNDEFINED)
 224                 adapter->temp_dcb_cfg.tc_config[tc].path[1].prio_type = prio;
 225         if (bwg_id != DCB_ATTR_VALUE_UNDEFINED)
 226                 adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_id = bwg_id;
 227         if (bw_pct != DCB_ATTR_VALUE_UNDEFINED)
 228                 adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_percent =
 229                         bw_pct;
 230         if (up_map != DCB_ATTR_VALUE_UNDEFINED)
 231                 adapter->temp_dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap =
 232                         up_map;
 233 }
 234
 235 static void ixgbe_dcbnl_set_pg_bwg_cfg_rx(struct net_device *netdev, int bwg_id,
 236                                           u8 bw_pct)
 237 {
 238         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 239
 240         adapter->temp_dcb_cfg.bw_percentage[1][bwg_id] = bw_pct;
 241 }
 242
 243 static void ixgbe_dcbnl_get_pg_tc_cfg_tx(struct net_device *netdev, int tc,
 244                                          u8 *prio, u8 *bwg_id, u8 *bw_pct,
 245                                          u8 *up_map)
 246 {
 247         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 248
 249         *prio = adapter->dcb_cfg.tc_config[tc].path[0].prio_type;
 250         *bwg_id = adapter->dcb_cfg.tc_config[tc].path[0].bwg_id;
 251         *bw_pct = adapter->dcb_cfg.tc_config[tc].path[0].bwg_percent;
 252         *up_map = adapter->dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap;
 253 }
 254
 255 static void ixgbe_dcbnl_get_pg_bwg_cfg_tx(struct net_device *netdev, int bwg_id,
 256                                           u8 *bw_pct)
 257 {
 258         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 259
 260         *bw_pct = adapter->dcb_cfg.bw_percentage[0][bwg_id];
 261 }
 262
 263 static void ixgbe_dcbnl_get_pg_tc_cfg_rx(struct net_device *netdev, int tc,
 264                                          u8 *prio, u8 *bwg_id, u8 *bw_pct,
 265                                          u8 *up_map)
 266 {
 267         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 268
 269         *prio = adapter->dcb_cfg.tc_config[tc].path[1].prio_type;
 270         *bwg_id = adapter->dcb_cfg.tc_config[tc].path[1].bwg_id;
 271         *bw_pct = adapter->dcb_cfg.tc_config[tc].path[1].bwg_percent;
 272         *up_map = adapter->dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap;
 273 }
 274
 275 static void ixgbe_dcbnl_get_pg_bwg_cfg_rx(struct net_device *netdev, int bwg_id,
 276                                           u8 *bw_pct)
 277 {
 278         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 279
 280         *bw_pct = adapter->dcb_cfg.bw_percentage[1][bwg_id];
 281 }
 282
 283 static void ixgbe_dcbnl_set_pfc_cfg(struct net_device *netdev, int priority,
 284                                     u8 setting)
 285 {
 286         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 287
 288         adapter->temp_dcb_cfg.tc_config[priority].dcb_pfc = setting;
 289         if (adapter->temp_dcb_cfg.tc_config[priority].dcb_pfc !=
 290             adapter->dcb_cfg.tc_config[priority].dcb_pfc)
 291                 adapter->temp_dcb_cfg.pfc_mode_enable = true;
 292 }
 293
 294 static void ixgbe_dcbnl_get_pfc_cfg(struct net_device *netdev, int priority,
 295                                     u8 *setting)
 296 {
 297         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 298
 299         *setting = adapter->dcb_cfg.tc_config[priority].dcb_pfc;
 300 }
 301
 302 static void ixgbe_dcbnl_devreset(struct net_device *dev)
 303 {
 304         struct ixgbe_adapter *adapter = netdev_priv(dev);
 305
 306         while (test_and_set_bit(__IXGBE_RESETTING, &adapter->state))
 307                 usleep_range(1000, 2000);
 308
 309         if (netif_running(dev))
 310                 dev->netdev_ops->ndo_stop(dev);
 311
 312         ixgbe_clear_interrupt_scheme(adapter);
 313         ixgbe_init_interrupt_scheme(adapter);
 314
 315         if (netif_running(dev))
 316                 dev->netdev_ops->ndo_open(dev);
 317
 318         clear_bit(__IXGBE_RESETTING, &adapter->state);
 319 }
 320
 321 static u8 ixgbe_dcbnl_set_all(struct net_device *netdev)
 322 {
 323         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 324         struct ixgbe_dcb_config *dcb_cfg = &adapter->dcb_cfg;
 325         struct ixgbe_hw *hw = &adapter->hw;
 326         int ret = DCB_NO_HW_CHG;
 327         int i;
 328
 329         /* Fail command if not in CEE mode */
 330         if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE))
 331                 return DCB_NO_HW_CHG;
 332
 333         adapter->dcb_set_bitmap |= ixgbe_copy_dcb_cfg(adapter,
 334                                                       MAX_TRAFFIC_CLASS);
 335         if (!adapter->dcb_set_bitmap)
 336                 return DCB_NO_HW_CHG;
 337
 338         if (adapter->dcb_set_bitmap & (BIT_PG_TX|BIT_PG_RX)) {
 339                 u16 refill[MAX_TRAFFIC_CLASS], max[MAX_TRAFFIC_CLASS];
 340                 u8 bwg_id[MAX_TRAFFIC_CLASS], prio_type[MAX_TRAFFIC_CLASS];
 341                 /* Priority to TC mapping in CEE case default to 1:1 */
 342                 u8 prio_tc[MAX_USER_PRIORITY];
 343                 int max_frame = adapter->netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
 344
 345 #ifdef IXGBE_FCOE
 346                 if (adapter->netdev->features & NETIF_F_FCOE_MTU)
 347                         max_frame = max(max_frame, IXGBE_FCOE_JUMBO_FRAME_SIZE);
 348 #endif
 349
 350                 ixgbe_dcb_calculate_tc_credits(hw, dcb_cfg, max_frame,
 351                                                DCB_TX_CONFIG);
 352                 ixgbe_dcb_calculate_tc_credits(hw, dcb_cfg, max_frame,
 353                                                DCB_RX_CONFIG);
 354
 355                 ixgbe_dcb_unpack_refill(dcb_cfg, DCB_TX_CONFIG, refill);
 356                 ixgbe_dcb_unpack_max(dcb_cfg, max);
 357                 ixgbe_dcb_unpack_bwgid(dcb_cfg, DCB_TX_CONFIG, bwg_id);
 358                 ixgbe_dcb_unpack_prio(dcb_cfg, DCB_TX_CONFIG, prio_type);
 359                 ixgbe_dcb_unpack_map(dcb_cfg, DCB_TX_CONFIG, prio_tc);
 360
 361                 ixgbe_dcb_hw_ets_config(hw, refill, max, bwg_id,
 362                                         prio_type, prio_tc);
 363
 364                 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
 365                         netdev_set_prio_tc_map(netdev, i, prio_tc[i]);
 366
 367                 ret = DCB_HW_CHG_RST;
 368         }
 369
 370         if (adapter->dcb_set_bitmap & BIT_PFC) {
 371                 if (dcb_cfg->pfc_mode_enable) {
 372                         u8 pfc_en;
 373                         u8 prio_tc[MAX_USER_PRIORITY];
 374
 375                         ixgbe_dcb_unpack_map(dcb_cfg, DCB_TX_CONFIG, prio_tc);
 376                         ixgbe_dcb_unpack_pfc(dcb_cfg, &pfc_en);
 377                         ixgbe_dcb_hw_pfc_config(hw, pfc_en, prio_tc);
 378                 } else {
 379                         hw->mac.ops.fc_enable(hw);
 380                 }
 381
 382                 ixgbe_set_rx_drop_en(adapter);
 383
 384                 ret = DCB_HW_CHG;
 385         }
 386
 387 #ifdef IXGBE_FCOE
 388         /* Reprogam FCoE hardware offloads when the traffic class
 389          * FCoE is using changes. This happens if the APP info
 390          * changes or the up2tc mapping is updated.
 391          */
 392         if (adapter->dcb_set_bitmap & BIT_APP_UPCHG) {
 393                 struct dcb_app app = {
 394                                       .selector = DCB_APP_IDTYPE_ETHTYPE,
 395                                       .protocol = ETH_P_FCOE,
 396                                      };
 397                 u8 up = dcb_getapp(netdev, &app);
 398
 399                 adapter->fcoe.up = ffs(up) - 1;
 400                 ixgbe_dcbnl_devreset(netdev);
 401                 ret = DCB_HW_CHG_RST;
 402         }
 403 #endif
 404
 405         adapter->dcb_set_bitmap = 0x00;
 406         return ret;
 407 }
 408
 409 static u8 ixgbe_dcbnl_getcap(struct net_device *netdev, int capid, u8 *cap)
 410 {
 411         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 412
 413         switch (capid) {
 414         case DCB_CAP_ATTR_PG:
 415                 *cap = true;
 416                 break;
 417         case DCB_CAP_ATTR_PFC:
 418                 *cap = true;
 419                 break;
 420         case DCB_CAP_ATTR_UP2TC:
 421                 *cap = false;
 422                 break;
 423         case DCB_CAP_ATTR_PG_TCS:
 424                 *cap = 0x80;
 425                 break;
 426         case DCB_CAP_ATTR_PFC_TCS:
 427                 *cap = 0x80;
 428                 break;
 429         case DCB_CAP_ATTR_GSP:
 430                 *cap = true;
 431                 break;
 432         case DCB_CAP_ATTR_BCN:
 433                 *cap = false;
 434                 break;
 435         case DCB_CAP_ATTR_DCBX:
 436                 *cap = adapter->dcbx_cap;
 437                 break;
 438         default:
 439                 *cap = false;
 440                 break;
 441         }
 442
 443         return 0;
 444 }
 445
 446 static int ixgbe_dcbnl_getnumtcs(struct net_device *netdev, int tcid, u8 *num)
 447 {
 448         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 449
 450         if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
 451                 switch (tcid) {
 452                 case DCB_NUMTCS_ATTR_PG:
 453                         *num = adapter->dcb_cfg.num_tcs.pg_tcs;
 454                         break;
 455                 case DCB_NUMTCS_ATTR_PFC:
 456                         *num = adapter->dcb_cfg.num_tcs.pfc_tcs;
 457                         break;
 458                 default:
 459                         return -EINVAL;
 460                 }
 461         } else {
 462                 return -EINVAL;
 463         }
 464
 465         return 0;
 466 }
 467
 468 static int ixgbe_dcbnl_setnumtcs(struct net_device *netdev, int tcid, u8 num)
 469 {
 470         return -EINVAL;
 471 }
 472
 473 static u8 ixgbe_dcbnl_getpfcstate(struct net_device *netdev)
 474 {
 475         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 476
 477         return adapter->dcb_cfg.pfc_mode_enable;
 478 }
 479
 480 static void ixgbe_dcbnl_setpfcstate(struct net_device *netdev, u8 state)
 481 {
 482         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 483
 484         adapter->temp_dcb_cfg.pfc_mode_enable = state;
 485 }
 486
 487 /**
 488  * ixgbe_dcbnl_getapp - retrieve the DCBX application user priority
 489  * @netdev : the corresponding netdev
 490  * @idtype : identifies the id as ether type or TCP/UDP port number
 491  * @id: id is either ether type or TCP/UDP port number
 492  *
 493  * Returns : on success, returns a non-zero 802.1p user priority bitmap
 494  * otherwise returns -EINVAL as the invalid user priority bitmap to indicate an
 495  * error.
 496  */
 497 static int ixgbe_dcbnl_getapp(struct net_device *netdev, u8 idtype, u16 id)
 498 {
 499         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 500         struct dcb_app app = {
 501                                 .selector = idtype,
 502                                 .protocol = id,
 503                              };
 504
 505         if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE))
 506                 return -EINVAL;
 507
 508         return dcb_getapp(netdev, &app);
 509 }
 510
 511 static int ixgbe_dcbnl_ieee_getets(struct net_device *dev,
 512                                    struct ieee_ets *ets)
 513 {
 514         struct ixgbe_adapter *adapter = netdev_priv(dev);
 515         struct ieee_ets *my_ets = adapter->ixgbe_ieee_ets;
 516
 517         ets->ets_cap = adapter->dcb_cfg.num_tcs.pg_tcs;
 518
 519         /* No IEEE PFC settings available */
 520         if (!my_ets)
 521                 return 0;
 522
 523         ets->cbs = my_ets->cbs;
 524         memcpy(ets->tc_tx_bw, my_ets->tc_tx_bw, sizeof(ets->tc_tx_bw));
 525         memcpy(ets->tc_rx_bw, my_ets->tc_rx_bw, sizeof(ets->tc_rx_bw));
 526         memcpy(ets->tc_tsa, my_ets->tc_tsa, sizeof(ets->tc_tsa));
 527         memcpy(ets->prio_tc, my_ets->prio_tc, sizeof(ets->prio_tc));
 528         return 0;
 529 }
 530
 531 static int ixgbe_dcbnl_ieee_setets(struct net_device *dev,
 532                                    struct ieee_ets *ets)
 533 {
 534         struct ixgbe_adapter *adapter = netdev_priv(dev);
 535         int max_frame = dev->mtu + ETH_HLEN + ETH_FCS_LEN;
 536         int i, err;
 537         __u8 max_tc = 0;
 538         __u8 map_chg = 0;
 539
 540         if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
 541                 return -EINVAL;
 542
 543         if (!adapter->ixgbe_ieee_ets) {
 544                 adapter->ixgbe_ieee_ets = kmalloc(sizeof(struct ieee_ets),
 545                                                   GFP_KERNEL);
 546                 if (!adapter->ixgbe_ieee_ets)
 547                         return -ENOMEM;
 548
 549                 /* initialize UP2TC mappings to invalid value */
 550                 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
 551                         adapter->ixgbe_ieee_ets->prio_tc[i] =
 552                                 IEEE_8021QAZ_MAX_TCS;
 553                 /* if possible update UP2TC mappings from HW */
 554                 ixgbe_dcb_read_rtrup2tc(&adapter->hw,
 555                                         adapter->ixgbe_ieee_ets->prio_tc);
 556         }
 557
 558         for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
 559                 if (ets->prio_tc[i] > max_tc)
 560                         max_tc = ets->prio_tc[i];
 561                 if (ets->prio_tc[i] != adapter->ixgbe_ieee_ets->prio_tc[i])
 562                         map_chg = 1;
 563         }
 564
 565         memcpy(adapter->ixgbe_ieee_ets, ets, sizeof(*adapter->ixgbe_ieee_ets));
 566
 567         if (max_tc)
 568                 max_tc++;
 569
 570         if (max_tc > adapter->dcb_cfg.num_tcs.pg_tcs)
 571                 return -EINVAL;
 572
 573         if (max_tc != netdev_get_num_tc(dev)) {
 574                 err = ixgbe_setup_tc(dev, max_tc);
 575                 if (err)
 576                         return err;
 577         } else if (map_chg) {
 578                 ixgbe_dcbnl_devreset(dev);
 579         }
 580
 581         return ixgbe_dcb_hw_ets(&adapter->hw, ets, max_frame);
 582 }
 583
 584 static int ixgbe_dcbnl_ieee_getpfc(struct net_device *dev,
 585                                    struct ieee_pfc *pfc)
 586 {
 587         struct ixgbe_adapter *adapter = netdev_priv(dev);
 588         struct ieee_pfc *my_pfc = adapter->ixgbe_ieee_pfc;
 589         int i;
 590
 591         pfc->pfc_cap = adapter->dcb_cfg.num_tcs.pfc_tcs;
 592
 593         /* No IEEE PFC settings available */
 594         if (!my_pfc)
 595                 return 0;
 596
 597         pfc->pfc_en = my_pfc->pfc_en;
 598         pfc->mbc = my_pfc->mbc;
 599         pfc->delay = my_pfc->delay;
 600
 601         for (i = 0; i < MAX_TRAFFIC_CLASS; i++) {
 602                 pfc->requests[i] = adapter->stats.pxoffrxc[i];
 603                 pfc->indications[i] = adapter->stats.pxofftxc[i];
 604         }
 605
 606         return 0;
 607 }
 608
 609 static int ixgbe_dcbnl_ieee_setpfc(struct net_device *dev,
 610                                    struct ieee_pfc *pfc)
 611 {
 612         struct ixgbe_adapter *adapter = netdev_priv(dev);
 613         struct ixgbe_hw *hw = &adapter->hw;
 614         u8 *prio_tc;
 615         int err;
 616
 617         if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
 618                 return -EINVAL;
 619
 620         if (!adapter->ixgbe_ieee_pfc) {
 621                 adapter->ixgbe_ieee_pfc = kmalloc(sizeof(struct ieee_pfc),
 622                                                   GFP_KERNEL);
 623                 if (!adapter->ixgbe_ieee_pfc)
 624                         return -ENOMEM;
 625         }
 626
 627         prio_tc = adapter->ixgbe_ieee_ets->prio_tc;
 628         memcpy(adapter->ixgbe_ieee_pfc, pfc, sizeof(*adapter->ixgbe_ieee_pfc));
 629
 630         /* Enable link flow control parameters if PFC is disabled */
 631         if (pfc->pfc_en)
 632                 err = ixgbe_dcb_hw_pfc_config(hw, pfc->pfc_en, prio_tc);
 633         else
 634                 err = hw->mac.ops.fc_enable(hw);
 635
 636         ixgbe_set_rx_drop_en(adapter);
 637
 638         return err;
 639 }
 640
 641 static int ixgbe_dcbnl_ieee_setapp(struct net_device *dev,
 642                                    struct dcb_app *app)
 643 {
 644         struct ixgbe_adapter *adapter = netdev_priv(dev);
 645         int err;
 646
 647         if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
 648                 return -EINVAL;
 649
 650         err = dcb_ieee_setapp(dev, app);
 651         if (err)
 652                 return err;
 653
 654 #ifdef IXGBE_FCOE
 655         if (app->selector == IEEE_8021QAZ_APP_SEL_ETHERTYPE &&
 656             app->protocol == ETH_P_FCOE) {
 657                 u8 app_mask = dcb_ieee_getapp_mask(dev, app);
 658
 659                 if (app_mask & (1 << adapter->fcoe.up))
 660                         return 0;
 661
 662                 adapter->fcoe.up = app->priority;
 663                 ixgbe_dcbnl_devreset(dev);
 664         }
 665 #endif
 666
 667         /* VF devices should use default UP when available */
 668         if (app->selector == IEEE_8021QAZ_APP_SEL_ETHERTYPE &&
 669             app->protocol == 0) {
 670                 int vf;
 671
 672                 adapter->default_up = app->priority;
 673
 674                 for (vf = 0; vf < adapter->num_vfs; vf++) {
 675                         struct vf_data_storage *vfinfo = &adapter->vfinfo[vf];
 676
 677                         if (!vfinfo->pf_qos)
 678                                 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan,
 679                                                 app->priority, vf);
 680                 }
 681         }
 682
 683         return 0;
 684 }
 685
 686 static int ixgbe_dcbnl_ieee_delapp(struct net_device *dev,
 687                                    struct dcb_app *app)
 688 {
 689         struct ixgbe_adapter *adapter = netdev_priv(dev);
 690         int err;
 691
 692         if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
 693                 return -EINVAL;
 694
 695         err = dcb_ieee_delapp(dev, app);
 696
 697 #ifdef IXGBE_FCOE
 698         if (!err && app->selector == IEEE_8021QAZ_APP_SEL_ETHERTYPE &&
 699             app->protocol == ETH_P_FCOE) {
 700                 u8 app_mask = dcb_ieee_getapp_mask(dev, app);
 701
 702                 if (app_mask & (1 << adapter->fcoe.up))
 703                         return 0;
 704
 705                 adapter->fcoe.up = app_mask ?
 706                                    ffs(app_mask) - 1 : IXGBE_FCOE_DEFTC;
 707                 ixgbe_dcbnl_devreset(dev);
 708         }
 709 #endif
 710         /* IF default priority is being removed clear VF default UP */
 711         if (app->selector == IEEE_8021QAZ_APP_SEL_ETHERTYPE &&
 712             app->protocol == 0 && adapter->default_up == app->priority) {
 713                 int vf;
 714                 long unsigned int app_mask = dcb_ieee_getapp_mask(dev, app);
 715                 int qos = app_mask ? find_first_bit(&app_mask, 8) : 0;
 716
 717                 adapter->default_up = qos;
 718
 719                 for (vf = 0; vf < adapter->num_vfs; vf++) {
 720                         struct vf_data_storage *vfinfo = &adapter->vfinfo[vf];
 721
 722                         if (!vfinfo->pf_qos)
 723                                 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan,
 724                                                 qos, vf);
 725                 }
 726         }
 727
 728         return err;
 729 }
 730
 731 static u8 ixgbe_dcbnl_getdcbx(struct net_device *dev)
 732 {
 733         struct ixgbe_adapter *adapter = netdev_priv(dev);
 734         return adapter->dcbx_cap;
 735 }
 736
 737 static u8 ixgbe_dcbnl_setdcbx(struct net_device *dev, u8 mode)
 738 {
 739         struct ixgbe_adapter *adapter = netdev_priv(dev);
 740         struct ieee_ets ets = {0};
 741         struct ieee_pfc pfc = {0};
 742         int err = 0;
 743
 744         /* no support for LLD_MANAGED modes or CEE+IEEE */
 745         if ((mode & DCB_CAP_DCBX_LLD_MANAGED) ||
 746             ((mode & DCB_CAP_DCBX_VER_IEEE) && (mode & DCB_CAP_DCBX_VER_CEE)) ||
 747             !(mode & DCB_CAP_DCBX_HOST))
 748                 return 1;
 749
 750         if (mode == adapter->dcbx_cap)
 751                 return 0;
 752
 753         adapter->dcbx_cap = mode;
 754
 755         /* ETS and PFC defaults */
 756         ets.ets_cap = 8;
 757         pfc.pfc_cap = 8;
 758
 759         if (mode & DCB_CAP_DCBX_VER_IEEE) {
 760                 ixgbe_dcbnl_ieee_setets(dev, &ets);
 761                 ixgbe_dcbnl_ieee_setpfc(dev, &pfc);
 762         } else if (mode & DCB_CAP_DCBX_VER_CEE) {
 763                 u8 mask = BIT_PFC | BIT_PG_TX | BIT_PG_RX | BIT_APP_UPCHG;
 764
 765                 adapter->dcb_set_bitmap |= mask;
 766                 ixgbe_dcbnl_set_all(dev);
 767         } else {
 768                 /* Drop into single TC mode strict priority as this
 769                  * indicates CEE and IEEE versions are disabled
 770                  */
 771                 ixgbe_dcbnl_ieee_setets(dev, &ets);
 772                 ixgbe_dcbnl_ieee_setpfc(dev, &pfc);
 773                 err = ixgbe_setup_tc(dev, 0);
 774         }
 775
 776         return err ? 1 : 0;
 777 }
 778
 779 const struct dcbnl_rtnl_ops dcbnl_ops = {
 780         .ieee_getets    = ixgbe_dcbnl_ieee_getets,
 781         .ieee_setets    = ixgbe_dcbnl_ieee_setets,
 782         .ieee_getpfc    = ixgbe_dcbnl_ieee_getpfc,
 783         .ieee_setpfc    = ixgbe_dcbnl_ieee_setpfc,
 784         .ieee_setapp    = ixgbe_dcbnl_ieee_setapp,
 785         .ieee_delapp    = ixgbe_dcbnl_ieee_delapp,
 786         .getstate       = ixgbe_dcbnl_get_state,
 787         .setstate       = ixgbe_dcbnl_set_state,
 788         .getpermhwaddr  = ixgbe_dcbnl_get_perm_hw_addr,
 789         .setpgtccfgtx   = ixgbe_dcbnl_set_pg_tc_cfg_tx,
 790         .setpgbwgcfgtx  = ixgbe_dcbnl_set_pg_bwg_cfg_tx,
 791         .setpgtccfgrx   = ixgbe_dcbnl_set_pg_tc_cfg_rx,
 792         .setpgbwgcfgrx  = ixgbe_dcbnl_set_pg_bwg_cfg_rx,
 793         .getpgtccfgtx   = ixgbe_dcbnl_get_pg_tc_cfg_tx,
 794         .getpgbwgcfgtx  = ixgbe_dcbnl_get_pg_bwg_cfg_tx,
 795         .getpgtccfgrx   = ixgbe_dcbnl_get_pg_tc_cfg_rx,
 796         .getpgbwgcfgrx  = ixgbe_dcbnl_get_pg_bwg_cfg_rx,
 797         .setpfccfg      = ixgbe_dcbnl_set_pfc_cfg,
 798         .getpfccfg      = ixgbe_dcbnl_get_pfc_cfg,
 799         .setall         = ixgbe_dcbnl_set_all,
 800         .getcap         = ixgbe_dcbnl_getcap,
 801         .getnumtcs      = ixgbe_dcbnl_getnumtcs,
 802         .setnumtcs      = ixgbe_dcbnl_setnumtcs,
 803         .getpfcstate    = ixgbe_dcbnl_getpfcstate,
 804         .setpfcstate    = ixgbe_dcbnl_setpfcstate,
 805         .getapp         = ixgbe_dcbnl_getapp,
 806         .getdcbx        = ixgbe_dcbnl_getdcbx,
 807         .setdcbx        = ixgbe_dcbnl_setdcbx,
 808 };