kernel/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         case ixgbe_mac_X550:
 184                 for (j = 0; j < netdev->addr_len; j++, i++)
 185                         perm_addr[i] = adapter->hw.mac.san_addr[j];
 186                 break;
 187         default:
 188                 break;
 189         }
 190 }
 191
 192 static void ixgbe_dcbnl_set_pg_tc_cfg_tx(struct net_device *netdev, int tc,
 193                                          u8 prio, u8 bwg_id, u8 bw_pct,
 194                                          u8 up_map)
 195 {
 196         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 197
 198         if (prio != DCB_ATTR_VALUE_UNDEFINED)
 199                 adapter->temp_dcb_cfg.tc_config[tc].path[0].prio_type = prio;
 200         if (bwg_id != DCB_ATTR_VALUE_UNDEFINED)
 201                 adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_id = bwg_id;
 202         if (bw_pct != DCB_ATTR_VALUE_UNDEFINED)
 203                 adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_percent =
 204                         bw_pct;
 205         if (up_map != DCB_ATTR_VALUE_UNDEFINED)
 206                 adapter->temp_dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap =
 207                         up_map;
 208 }
 209
 210 static void ixgbe_dcbnl_set_pg_bwg_cfg_tx(struct net_device *netdev, int bwg_id,
 211                                           u8 bw_pct)
 212 {
 213         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 214
 215         adapter->temp_dcb_cfg.bw_percentage[0][bwg_id] = bw_pct;
 216 }
 217
 218 static void ixgbe_dcbnl_set_pg_tc_cfg_rx(struct net_device *netdev, int tc,
 219                                          u8 prio, u8 bwg_id, u8 bw_pct,
 220                                          u8 up_map)
 221 {
 222         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 223
 224         if (prio != DCB_ATTR_VALUE_UNDEFINED)
 225                 adapter->temp_dcb_cfg.tc_config[tc].path[1].prio_type = prio;
 226         if (bwg_id != DCB_ATTR_VALUE_UNDEFINED)
 227                 adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_id = bwg_id;
 228         if (bw_pct != DCB_ATTR_VALUE_UNDEFINED)
 229                 adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_percent =
 230                         bw_pct;
 231         if (up_map != DCB_ATTR_VALUE_UNDEFINED)
 232                 adapter->temp_dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap =
 233                         up_map;
 234 }
 235
 236 static void ixgbe_dcbnl_set_pg_bwg_cfg_rx(struct net_device *netdev, int bwg_id,
 237                                           u8 bw_pct)
 238 {
 239         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 240
 241         adapter->temp_dcb_cfg.bw_percentage[1][bwg_id] = bw_pct;
 242 }
 243
 244 static void ixgbe_dcbnl_get_pg_tc_cfg_tx(struct net_device *netdev, int tc,
 245                                          u8 *prio, u8 *bwg_id, u8 *bw_pct,
 246                                          u8 *up_map)
 247 {
 248         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 249
 250         *prio = adapter->dcb_cfg.tc_config[tc].path[0].prio_type;
 251         *bwg_id = adapter->dcb_cfg.tc_config[tc].path[0].bwg_id;
 252         *bw_pct = adapter->dcb_cfg.tc_config[tc].path[0].bwg_percent;
 253         *up_map = adapter->dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap;
 254 }
 255
 256 static void ixgbe_dcbnl_get_pg_bwg_cfg_tx(struct net_device *netdev, int bwg_id,
 257                                           u8 *bw_pct)
 258 {
 259         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 260
 261         *bw_pct = adapter->dcb_cfg.bw_percentage[0][bwg_id];
 262 }
 263
 264 static void ixgbe_dcbnl_get_pg_tc_cfg_rx(struct net_device *netdev, int tc,
 265                                          u8 *prio, u8 *bwg_id, u8 *bw_pct,
 266                                          u8 *up_map)
 267 {
 268         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 269
 270         *prio = adapter->dcb_cfg.tc_config[tc].path[1].prio_type;
 271         *bwg_id = adapter->dcb_cfg.tc_config[tc].path[1].bwg_id;
 272         *bw_pct = adapter->dcb_cfg.tc_config[tc].path[1].bwg_percent;
 273         *up_map = adapter->dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap;
 274 }
 275
 276 static void ixgbe_dcbnl_get_pg_bwg_cfg_rx(struct net_device *netdev, int bwg_id,
 277                                           u8 *bw_pct)
 278 {
 279         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 280
 281         *bw_pct = adapter->dcb_cfg.bw_percentage[1][bwg_id];
 282 }
 283
 284 static void ixgbe_dcbnl_set_pfc_cfg(struct net_device *netdev, int priority,
 285                                     u8 setting)
 286 {
 287         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 288
 289         adapter->temp_dcb_cfg.tc_config[priority].dcb_pfc = setting;
 290         if (adapter->temp_dcb_cfg.tc_config[priority].dcb_pfc !=
 291             adapter->dcb_cfg.tc_config[priority].dcb_pfc)
 292                 adapter->temp_dcb_cfg.pfc_mode_enable = true;
 293 }
 294
 295 static void ixgbe_dcbnl_get_pfc_cfg(struct net_device *netdev, int priority,
 296                                     u8 *setting)
 297 {
 298         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 299
 300         *setting = adapter->dcb_cfg.tc_config[priority].dcb_pfc;
 301 }
 302
 303 static void ixgbe_dcbnl_devreset(struct net_device *dev)
 304 {
 305         struct ixgbe_adapter *adapter = netdev_priv(dev);
 306
 307         while (test_and_set_bit(__IXGBE_RESETTING, &adapter->state))
 308                 usleep_range(1000, 2000);
 309
 310         if (netif_running(dev))
 311                 dev->netdev_ops->ndo_stop(dev);
 312
 313         ixgbe_clear_interrupt_scheme(adapter);
 314         ixgbe_init_interrupt_scheme(adapter);
 315
 316         if (netif_running(dev))
 317                 dev->netdev_ops->ndo_open(dev);
 318
 319         clear_bit(__IXGBE_RESETTING, &adapter->state);
 320 }
 321
 322 static u8 ixgbe_dcbnl_set_all(struct net_device *netdev)
 323 {
 324         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 325         struct ixgbe_dcb_config *dcb_cfg = &adapter->dcb_cfg;
 326         struct ixgbe_hw *hw = &adapter->hw;
 327         int ret = DCB_NO_HW_CHG;
 328         int i;
 329
 330         /* Fail command if not in CEE mode */
 331         if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE))
 332                 return DCB_NO_HW_CHG;
 333
 334         adapter->dcb_set_bitmap |= ixgbe_copy_dcb_cfg(adapter,
 335                                                       MAX_TRAFFIC_CLASS);
 336         if (!adapter->dcb_set_bitmap)
 337                 return DCB_NO_HW_CHG;
 338
 339         if (adapter->dcb_set_bitmap & (BIT_PG_TX|BIT_PG_RX)) {
 340                 u16 refill[MAX_TRAFFIC_CLASS], max[MAX_TRAFFIC_CLASS];
 341                 u8 bwg_id[MAX_TRAFFIC_CLASS], prio_type[MAX_TRAFFIC_CLASS];
 342                 /* Priority to TC mapping in CEE case default to 1:1 */
 343                 u8 prio_tc[MAX_USER_PRIORITY];
 344                 int max_frame = adapter->netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
 345
 346 #ifdef IXGBE_FCOE
 347                 if (adapter->netdev->features & NETIF_F_FCOE_MTU)
 348                         max_frame = max(max_frame, IXGBE_FCOE_JUMBO_FRAME_SIZE);
 349 #endif
 350
 351                 ixgbe_dcb_calculate_tc_credits(hw, dcb_cfg, max_frame,
 352                                                DCB_TX_CONFIG);
 353                 ixgbe_dcb_calculate_tc_credits(hw, dcb_cfg, max_frame,
 354                                                DCB_RX_CONFIG);
 355
 356                 ixgbe_dcb_unpack_refill(dcb_cfg, DCB_TX_CONFIG, refill);
 357                 ixgbe_dcb_unpack_max(dcb_cfg, max);
 358                 ixgbe_dcb_unpack_bwgid(dcb_cfg, DCB_TX_CONFIG, bwg_id);
 359                 ixgbe_dcb_unpack_prio(dcb_cfg, DCB_TX_CONFIG, prio_type);
 360                 ixgbe_dcb_unpack_map(dcb_cfg, DCB_TX_CONFIG, prio_tc);
 361
 362                 ixgbe_dcb_hw_ets_config(hw, refill, max, bwg_id,
 363                                         prio_type, prio_tc);
 364
 365                 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
 366                         netdev_set_prio_tc_map(netdev, i, prio_tc[i]);
 367
 368                 ret = DCB_HW_CHG_RST;
 369         }
 370
 371         if (adapter->dcb_set_bitmap & BIT_PFC) {
 372                 if (dcb_cfg->pfc_mode_enable) {
 373                         u8 pfc_en;
 374                         u8 prio_tc[MAX_USER_PRIORITY];
 375
 376                         ixgbe_dcb_unpack_map(dcb_cfg, DCB_TX_CONFIG, prio_tc);
 377                         ixgbe_dcb_unpack_pfc(dcb_cfg, &pfc_en);
 378                         ixgbe_dcb_hw_pfc_config(hw, pfc_en, prio_tc);
 379                 } else {
 380                         hw->mac.ops.fc_enable(hw);
 381                 }
 382
 383                 ixgbe_set_rx_drop_en(adapter);
 384
 385                 ret = DCB_HW_CHG;
 386         }
 387
 388 #ifdef IXGBE_FCOE
 389         /* Reprogam FCoE hardware offloads when the traffic class
 390          * FCoE is using changes. This happens if the APP info
 391          * changes or the up2tc mapping is updated.
 392          */
 393         if (adapter->dcb_set_bitmap & BIT_APP_UPCHG) {
 394                 struct dcb_app app = {
 395                                       .selector = DCB_APP_IDTYPE_ETHTYPE,
 396                                       .protocol = ETH_P_FCOE,
 397                                      };
 398                 u8 up = dcb_getapp(netdev, &app);
 399
 400                 adapter->fcoe.up = ffs(up) - 1;
 401                 ixgbe_dcbnl_devreset(netdev);
 402                 ret = DCB_HW_CHG_RST;
 403         }
 404 #endif
 405
 406         adapter->dcb_set_bitmap = 0x00;
 407         return ret;
 408 }
 409
 410 static u8 ixgbe_dcbnl_getcap(struct net_device *netdev, int capid, u8 *cap)
 411 {
 412         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 413
 414         switch (capid) {
 415         case DCB_CAP_ATTR_PG:
 416                 *cap = true;
 417                 break;
 418         case DCB_CAP_ATTR_PFC:
 419                 *cap = true;
 420                 break;
 421         case DCB_CAP_ATTR_UP2TC:
 422                 *cap = false;
 423                 break;
 424         case DCB_CAP_ATTR_PG_TCS:
 425                 *cap = 0x80;
 426                 break;
 427         case DCB_CAP_ATTR_PFC_TCS:
 428                 *cap = 0x80;
 429                 break;
 430         case DCB_CAP_ATTR_GSP:
 431                 *cap = true;
 432                 break;
 433         case DCB_CAP_ATTR_BCN:
 434                 *cap = false;
 435                 break;
 436         case DCB_CAP_ATTR_DCBX:
 437                 *cap = adapter->dcbx_cap;
 438                 break;
 439         default:
 440                 *cap = false;
 441                 break;
 442         }
 443
 444         return 0;
 445 }
 446
 447 static int ixgbe_dcbnl_getnumtcs(struct net_device *netdev, int tcid, u8 *num)
 448 {
 449         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 450
 451         if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
 452                 switch (tcid) {
 453                 case DCB_NUMTCS_ATTR_PG:
 454                         *num = adapter->dcb_cfg.num_tcs.pg_tcs;
 455                         break;
 456                 case DCB_NUMTCS_ATTR_PFC:
 457                         *num = adapter->dcb_cfg.num_tcs.pfc_tcs;
 458                         break;
 459                 default:
 460                         return -EINVAL;
 461                 }
 462         } else {
 463                 return -EINVAL;
 464         }
 465
 466         return 0;
 467 }
 468
 469 static int ixgbe_dcbnl_setnumtcs(struct net_device *netdev, int tcid, u8 num)
 470 {
 471         return -EINVAL;
 472 }
 473
 474 static u8 ixgbe_dcbnl_getpfcstate(struct net_device *netdev)
 475 {
 476         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 477
 478         return adapter->dcb_cfg.pfc_mode_enable;
 479 }
 480
 481 static void ixgbe_dcbnl_setpfcstate(struct net_device *netdev, u8 state)
 482 {
 483         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 484
 485         adapter->temp_dcb_cfg.pfc_mode_enable = state;
 486 }
 487
 488 /**
 489  * ixgbe_dcbnl_getapp - retrieve the DCBX application user priority
 490  * @netdev : the corresponding netdev
 491  * @idtype : identifies the id as ether type or TCP/UDP port number
 492  * @id: id is either ether type or TCP/UDP port number
 493  *
 494  * Returns : on success, returns a non-zero 802.1p user priority bitmap
 495  * otherwise returns -EINVAL as the invalid user priority bitmap to indicate an
 496  * error.
 497  */
 498 static int ixgbe_dcbnl_getapp(struct net_device *netdev, u8 idtype, u16 id)
 499 {
 500         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 501         struct dcb_app app = {
 502                                 .selector = idtype,
 503                                 .protocol = id,
 504                              };
 505
 506         if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE))
 507                 return -EINVAL;
 508
 509         return dcb_getapp(netdev, &app);
 510 }
 511
 512 static int ixgbe_dcbnl_ieee_getets(struct net_device *dev,
 513                                    struct ieee_ets *ets)
 514 {
 515         struct ixgbe_adapter *adapter = netdev_priv(dev);
 516         struct ieee_ets *my_ets = adapter->ixgbe_ieee_ets;
 517
 518         ets->ets_cap = adapter->dcb_cfg.num_tcs.pg_tcs;
 519
 520         /* No IEEE PFC settings available */
 521         if (!my_ets)
 522                 return 0;
 523
 524         ets->cbs = my_ets->cbs;
 525         memcpy(ets->tc_tx_bw, my_ets->tc_tx_bw, sizeof(ets->tc_tx_bw));
 526         memcpy(ets->tc_rx_bw, my_ets->tc_rx_bw, sizeof(ets->tc_rx_bw));
 527         memcpy(ets->tc_tsa, my_ets->tc_tsa, sizeof(ets->tc_tsa));
 528         memcpy(ets->prio_tc, my_ets->prio_tc, sizeof(ets->prio_tc));
 529         return 0;
 530 }
 531
 532 static int ixgbe_dcbnl_ieee_setets(struct net_device *dev,
 533                                    struct ieee_ets *ets)
 534 {
 535         struct ixgbe_adapter *adapter = netdev_priv(dev);
 536         int max_frame = dev->mtu + ETH_HLEN + ETH_FCS_LEN;
 537         int i, err;
 538         __u8 max_tc = 0;
 539         __u8 map_chg = 0;
 540
 541         if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
 542                 return -EINVAL;
 543
 544         if (!adapter->ixgbe_ieee_ets) {
 545                 adapter->ixgbe_ieee_ets = kmalloc(sizeof(struct ieee_ets),
 546                                                   GFP_KERNEL);
 547                 if (!adapter->ixgbe_ieee_ets)
 548                         return -ENOMEM;
 549
 550                 /* initialize UP2TC mappings to invalid value */
 551                 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
 552                         adapter->ixgbe_ieee_ets->prio_tc[i] =
 553                                 IEEE_8021QAZ_MAX_TCS;
 554                 /* if possible update UP2TC mappings from HW */
 555                 ixgbe_dcb_read_rtrup2tc(&adapter->hw,
 556                                         adapter->ixgbe_ieee_ets->prio_tc);
 557         }
 558
 559         for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
 560                 if (ets->prio_tc[i] > max_tc)
 561                         max_tc = ets->prio_tc[i];
 562                 if (ets->prio_tc[i] != adapter->ixgbe_ieee_ets->prio_tc[i])
 563                         map_chg = 1;
 564         }
 565
 566         memcpy(adapter->ixgbe_ieee_ets, ets, sizeof(*adapter->ixgbe_ieee_ets));
 567
 568         if (max_tc)
 569                 max_tc++;
 570
 571         if (max_tc > adapter->dcb_cfg.num_tcs.pg_tcs)
 572                 return -EINVAL;
 573
 574         if (max_tc != netdev_get_num_tc(dev)) {
 575                 err = ixgbe_setup_tc(dev, max_tc);
 576                 if (err)
 577                         return err;
 578         } else if (map_chg) {
 579                 ixgbe_dcbnl_devreset(dev);
 580         }
 581
 582         return ixgbe_dcb_hw_ets(&adapter->hw, ets, max_frame);
 583 }
 584
 585 static int ixgbe_dcbnl_ieee_getpfc(struct net_device *dev,
 586                                    struct ieee_pfc *pfc)
 587 {
 588         struct ixgbe_adapter *adapter = netdev_priv(dev);
 589         struct ieee_pfc *my_pfc = adapter->ixgbe_ieee_pfc;
 590         int i;
 591
 592         pfc->pfc_cap = adapter->dcb_cfg.num_tcs.pfc_tcs;
 593
 594         /* No IEEE PFC settings available */
 595         if (!my_pfc)
 596                 return 0;
 597
 598         pfc->pfc_en = my_pfc->pfc_en;
 599         pfc->mbc = my_pfc->mbc;
 600         pfc->delay = my_pfc->delay;
 601
 602         for (i = 0; i < MAX_TRAFFIC_CLASS; i++) {
 603                 pfc->requests[i] = adapter->stats.pxoffrxc[i];
 604                 pfc->indications[i] = adapter->stats.pxofftxc[i];
 605         }
 606
 607         return 0;
 608 }
 609
 610 static int ixgbe_dcbnl_ieee_setpfc(struct net_device *dev,
 611                                    struct ieee_pfc *pfc)
 612 {
 613         struct ixgbe_adapter *adapter = netdev_priv(dev);
 614         struct ixgbe_hw *hw = &adapter->hw;
 615         u8 *prio_tc;
 616         int err;
 617
 618         if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
 619                 return -EINVAL;
 620
 621         if (!adapter->ixgbe_ieee_pfc) {
 622                 adapter->ixgbe_ieee_pfc = kmalloc(sizeof(struct ieee_pfc),
 623                                                   GFP_KERNEL);
 624                 if (!adapter->ixgbe_ieee_pfc)
 625                         return -ENOMEM;
 626         }
 627
 628         prio_tc = adapter->ixgbe_ieee_ets->prio_tc;
 629         memcpy(adapter->ixgbe_ieee_pfc, pfc, sizeof(*adapter->ixgbe_ieee_pfc));
 630
 631         /* Enable link flow control parameters if PFC is disabled */
 632         if (pfc->pfc_en)
 633                 err = ixgbe_dcb_hw_pfc_config(hw, pfc->pfc_en, prio_tc);
 634         else
 635                 err = hw->mac.ops.fc_enable(hw);
 636
 637         ixgbe_set_rx_drop_en(adapter);
 638
 639         return err;
 640 }
 641
 642 static int ixgbe_dcbnl_ieee_setapp(struct net_device *dev,
 643                                    struct dcb_app *app)
 644 {
 645         struct ixgbe_adapter *adapter = netdev_priv(dev);
 646         int err;
 647
 648         if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
 649                 return -EINVAL;
 650
 651         err = dcb_ieee_setapp(dev, app);
 652         if (err)
 653                 return err;
 654
 655 #ifdef IXGBE_FCOE
 656         if (app->selector == IEEE_8021QAZ_APP_SEL_ETHERTYPE &&
 657             app->protocol == ETH_P_FCOE) {
 658                 u8 app_mask = dcb_ieee_getapp_mask(dev, app);
 659
 660                 if (app_mask & (1 << adapter->fcoe.up))
 661                         return 0;
 662
 663                 adapter->fcoe.up = app->priority;
 664                 ixgbe_dcbnl_devreset(dev);
 665         }
 666 #endif
 667
 668         /* VF devices should use default UP when available */
 669         if (app->selector == IEEE_8021QAZ_APP_SEL_ETHERTYPE &&
 670             app->protocol == 0) {
 671                 int vf;
 672
 673                 adapter->default_up = app->priority;
 674
 675                 for (vf = 0; vf < adapter->num_vfs; vf++) {
 676                         struct vf_data_storage *vfinfo = &adapter->vfinfo[vf];
 677
 678                         if (!vfinfo->pf_qos)
 679                                 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan,
 680                                                 app->priority, vf);
 681                 }
 682         }
 683
 684         return 0;
 685 }
 686
 687 static int ixgbe_dcbnl_ieee_delapp(struct net_device *dev,
 688                                    struct dcb_app *app)
 689 {
 690         struct ixgbe_adapter *adapter = netdev_priv(dev);
 691         int err;
 692
 693         if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
 694                 return -EINVAL;
 695
 696         err = dcb_ieee_delapp(dev, app);
 697
 698 #ifdef IXGBE_FCOE
 699         if (!err && app->selector == IEEE_8021QAZ_APP_SEL_ETHERTYPE &&
 700             app->protocol == ETH_P_FCOE) {
 701                 u8 app_mask = dcb_ieee_getapp_mask(dev, app);
 702
 703                 if (app_mask & (1 << adapter->fcoe.up))
 704                         return 0;
 705
 706                 adapter->fcoe.up = app_mask ?
 707                                    ffs(app_mask) - 1 : IXGBE_FCOE_DEFTC;
 708                 ixgbe_dcbnl_devreset(dev);
 709         }
 710 #endif
 711         /* IF default priority is being removed clear VF default UP */
 712         if (app->selector == IEEE_8021QAZ_APP_SEL_ETHERTYPE &&
 713             app->protocol == 0 && adapter->default_up == app->priority) {
 714                 int vf;
 715                 long unsigned int app_mask = dcb_ieee_getapp_mask(dev, app);
 716                 int qos = app_mask ? find_first_bit(&app_mask, 8) : 0;
 717
 718                 adapter->default_up = qos;
 719
 720                 for (vf = 0; vf < adapter->num_vfs; vf++) {
 721                         struct vf_data_storage *vfinfo = &adapter->vfinfo[vf];
 722
 723                         if (!vfinfo->pf_qos)
 724                                 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan,
 725                                                 qos, vf);
 726                 }
 727         }
 728
 729         return err;
 730 }
 731
 732 static u8 ixgbe_dcbnl_getdcbx(struct net_device *dev)
 733 {
 734         struct ixgbe_adapter *adapter = netdev_priv(dev);
 735         return adapter->dcbx_cap;
 736 }
 737
 738 static u8 ixgbe_dcbnl_setdcbx(struct net_device *dev, u8 mode)
 739 {
 740         struct ixgbe_adapter *adapter = netdev_priv(dev);
 741         struct ieee_ets ets = {0};
 742         struct ieee_pfc pfc = {0};
 743         int err = 0;
 744
 745         /* no support for LLD_MANAGED modes or CEE+IEEE */
 746         if ((mode & DCB_CAP_DCBX_LLD_MANAGED) ||
 747             ((mode & DCB_CAP_DCBX_VER_IEEE) && (mode & DCB_CAP_DCBX_VER_CEE)) ||
 748             !(mode & DCB_CAP_DCBX_HOST))
 749                 return 1;
 750
 751         if (mode == adapter->dcbx_cap)
 752                 return 0;
 753
 754         adapter->dcbx_cap = mode;
 755
 756         /* ETS and PFC defaults */
 757         ets.ets_cap = 8;
 758         pfc.pfc_cap = 8;
 759
 760         if (mode & DCB_CAP_DCBX_VER_IEEE) {
 761                 ixgbe_dcbnl_ieee_setets(dev, &ets);
 762                 ixgbe_dcbnl_ieee_setpfc(dev, &pfc);
 763         } else if (mode & DCB_CAP_DCBX_VER_CEE) {
 764                 u8 mask = BIT_PFC | BIT_PG_TX | BIT_PG_RX | BIT_APP_UPCHG;
 765
 766                 adapter->dcb_set_bitmap |= mask;
 767                 ixgbe_dcbnl_set_all(dev);
 768         } else {
 769                 /* Drop into single TC mode strict priority as this
 770                  * indicates CEE and IEEE versions are disabled
 771                  */
 772                 ixgbe_dcbnl_ieee_setets(dev, &ets);
 773                 ixgbe_dcbnl_ieee_setpfc(dev, &pfc);
 774                 err = ixgbe_setup_tc(dev, 0);
 775         }
 776
 777         return err ? 1 : 0;
 778 }
 779
 780 const struct dcbnl_rtnl_ops dcbnl_ops = {
 781         .ieee_getets    = ixgbe_dcbnl_ieee_getets,
 782         .ieee_setets    = ixgbe_dcbnl_ieee_setets,
 783         .ieee_getpfc    = ixgbe_dcbnl_ieee_getpfc,
 784         .ieee_setpfc    = ixgbe_dcbnl_ieee_setpfc,
 785         .ieee_setapp    = ixgbe_dcbnl_ieee_setapp,
 786         .ieee_delapp    = ixgbe_dcbnl_ieee_delapp,
 787         .getstate       = ixgbe_dcbnl_get_state,
 788         .setstate       = ixgbe_dcbnl_set_state,
 789         .getpermhwaddr  = ixgbe_dcbnl_get_perm_hw_addr,
 790         .setpgtccfgtx   = ixgbe_dcbnl_set_pg_tc_cfg_tx,
 791         .setpgbwgcfgtx  = ixgbe_dcbnl_set_pg_bwg_cfg_tx,
 792         .setpgtccfgrx   = ixgbe_dcbnl_set_pg_tc_cfg_rx,
 793         .setpgbwgcfgrx  = ixgbe_dcbnl_set_pg_bwg_cfg_rx,
 794         .getpgtccfgtx   = ixgbe_dcbnl_get_pg_tc_cfg_tx,
 795         .getpgbwgcfgtx  = ixgbe_dcbnl_get_pg_bwg_cfg_tx,
 796         .getpgtccfgrx   = ixgbe_dcbnl_get_pg_tc_cfg_rx,
 797         .getpgbwgcfgrx  = ixgbe_dcbnl_get_pg_bwg_cfg_rx,
 798         .setpfccfg      = ixgbe_dcbnl_set_pfc_cfg,
 799         .getpfccfg      = ixgbe_dcbnl_get_pfc_cfg,
 800         .setall         = ixgbe_dcbnl_set_all,
 801         .getcap         = ixgbe_dcbnl_getcap,
 802         .getnumtcs      = ixgbe_dcbnl_getnumtcs,
 803         .setnumtcs      = ixgbe_dcbnl_setnumtcs,
 804         .getpfcstate    = ixgbe_dcbnl_getpfcstate,
 805         .setpfcstate    = ixgbe_dcbnl_setpfcstate,
 806         .getapp         = ixgbe_dcbnl_getapp,
 807         .getdcbx        = ixgbe_dcbnl_getdcbx,
 808         .setdcbx        = ixgbe_dcbnl_setdcbx,
 809 };