git.oblomov.eu Git - linux-2.6/blob - drivers/net/ixgbe/ixgbe_dcb_nl.c

   1 /*******************************************************************************
   2
   3   Intel 10 Gigabit PCI Express Linux driver
   4   Copyright(c) 1999 - 2009 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
  32 /* Callbacks for DCB netlink in the kernel */
  33 #define BIT_DCB_MODE    0x01
  34 #define BIT_PFC         0x02
  35 #define BIT_PG_RX       0x04
  36 #define BIT_PG_TX       0x08
  37 #define BIT_BCN         0x10
  38 #define BIT_LINKSPEED   0x80
  39
  40 int ixgbe_copy_dcb_cfg(struct ixgbe_dcb_config *src_dcb_cfg,
  41                        struct ixgbe_dcb_config *dst_dcb_cfg, int tc_max)
  42 {
  43         struct tc_configuration *src_tc_cfg = NULL;
  44         struct tc_configuration *dst_tc_cfg = NULL;
  45         int i;
  46
  47         if (!src_dcb_cfg || !dst_dcb_cfg)
  48                 return -EINVAL;
  49
  50         for (i = DCB_PG_ATTR_TC_0; i < tc_max + DCB_PG_ATTR_TC_0; i++) {
  51                 src_tc_cfg = &src_dcb_cfg->tc_config[i - DCB_PG_ATTR_TC_0];
  52                 dst_tc_cfg = &dst_dcb_cfg->tc_config[i - DCB_PG_ATTR_TC_0];
  53
  54                 dst_tc_cfg->path[DCB_TX_CONFIG].prio_type =
  55                                 src_tc_cfg->path[DCB_TX_CONFIG].prio_type;
  56
  57                 dst_tc_cfg->path[DCB_TX_CONFIG].bwg_id =
  58                                 src_tc_cfg->path[DCB_TX_CONFIG].bwg_id;
  59
  60                 dst_tc_cfg->path[DCB_TX_CONFIG].bwg_percent =
  61                                 src_tc_cfg->path[DCB_TX_CONFIG].bwg_percent;
  62
  63                 dst_tc_cfg->path[DCB_TX_CONFIG].up_to_tc_bitmap =
  64                                 src_tc_cfg->path[DCB_TX_CONFIG].up_to_tc_bitmap;
  65
  66                 dst_tc_cfg->path[DCB_RX_CONFIG].prio_type =
  67                                 src_tc_cfg->path[DCB_RX_CONFIG].prio_type;
  68
  69                 dst_tc_cfg->path[DCB_RX_CONFIG].bwg_id =
  70                                 src_tc_cfg->path[DCB_RX_CONFIG].bwg_id;
  71
  72                 dst_tc_cfg->path[DCB_RX_CONFIG].bwg_percent =
  73                                 src_tc_cfg->path[DCB_RX_CONFIG].bwg_percent;
  74
  75                 dst_tc_cfg->path[DCB_RX_CONFIG].up_to_tc_bitmap =
  76                                 src_tc_cfg->path[DCB_RX_CONFIG].up_to_tc_bitmap;
  77         }
  78
  79         for (i = DCB_PG_ATTR_BW_ID_0; i < DCB_PG_ATTR_BW_ID_MAX; i++) {
  80                 dst_dcb_cfg->bw_percentage[DCB_TX_CONFIG]
  81                         [i-DCB_PG_ATTR_BW_ID_0] = src_dcb_cfg->bw_percentage
  82                                 [DCB_TX_CONFIG][i-DCB_PG_ATTR_BW_ID_0];
  83                 dst_dcb_cfg->bw_percentage[DCB_RX_CONFIG]
  84                         [i-DCB_PG_ATTR_BW_ID_0] = src_dcb_cfg->bw_percentage
  85                                 [DCB_RX_CONFIG][i-DCB_PG_ATTR_BW_ID_0];
  86         }
  87
  88         for (i = DCB_PFC_UP_ATTR_0; i < DCB_PFC_UP_ATTR_MAX; i++) {
  89                 dst_dcb_cfg->tc_config[i - DCB_PFC_UP_ATTR_0].dcb_pfc =
  90                         src_dcb_cfg->tc_config[i - DCB_PFC_UP_ATTR_0].dcb_pfc;
  91         }
  92
  93         dst_dcb_cfg->pfc_mode_enable = src_dcb_cfg->pfc_mode_enable;
  94
  95         return 0;
  96 }
  97
  98 static u8 ixgbe_dcbnl_get_state(struct net_device *netdev)
  99 {
 100         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 101
 102         DPRINTK(DRV, INFO, "Get DCB Admin Mode.\n");
 103
 104         return !!(adapter->flags & IXGBE_FLAG_DCB_ENABLED);
 105 }
 106
 107 static u8 ixgbe_dcbnl_set_state(struct net_device *netdev, u8 state)
 108 {
 109         u8 err = 0;
 110         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 111
 112         DPRINTK(DRV, INFO, "Set DCB Admin Mode.\n");
 113
 114         if (state > 0) {
 115                 /* Turn on DCB */
 116                 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED)
 117                         goto out;
 118
 119                 if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED)) {
 120                         DPRINTK(DRV, ERR, "Enable failed, needs MSI-X\n");
 121                         err = 1;
 122                         goto out;
 123                 }
 124
 125                 if (netif_running(netdev))
 126                         netdev->netdev_ops->ndo_stop(netdev);
 127                 ixgbe_clear_interrupt_scheme(adapter);
 128
 129                 adapter->hw.fc.requested_mode = ixgbe_fc_pfc;
 130                 adapter->flags &= ~IXGBE_FLAG_RSS_ENABLED;
 131                 adapter->flags |= IXGBE_FLAG_DCB_ENABLED;
 132                 ixgbe_init_interrupt_scheme(adapter);
 133                 if (netif_running(netdev))
 134                         netdev->netdev_ops->ndo_open(netdev);
 135         } else {
 136                 /* Turn off DCB */
 137                 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
 138                         adapter->hw.fc.requested_mode = ixgbe_fc_default;
 139                         if (netif_running(netdev))
 140                                 netdev->netdev_ops->ndo_stop(netdev);
 141                         ixgbe_clear_interrupt_scheme(adapter);
 142
 143                         adapter->flags &= ~IXGBE_FLAG_DCB_ENABLED;
 144                         adapter->flags |= IXGBE_FLAG_RSS_ENABLED;
 145                         ixgbe_init_interrupt_scheme(adapter);
 146                         if (netif_running(netdev))
 147                                 netdev->netdev_ops->ndo_open(netdev);
 148                 }
 149         }
 150 out:
 151         return err;
 152 }
 153
 154 static void ixgbe_dcbnl_get_perm_hw_addr(struct net_device *netdev,
 155                                          u8 *perm_addr)
 156 {
 157         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 158         int i, j;
 159
 160         for (i = 0; i < netdev->addr_len; i++)
 161                 perm_addr[i] = adapter->hw.mac.perm_addr[i];
 162
 163         if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
 164                 for (j = 0; j < netdev->addr_len; j++, i++)
 165                         perm_addr[i] = adapter->hw.mac.san_addr[j];
 166         }
 167 }
 168
 169 static void ixgbe_dcbnl_set_pg_tc_cfg_tx(struct net_device *netdev, int tc,
 170                                          u8 prio, u8 bwg_id, u8 bw_pct,
 171                                          u8 up_map)
 172 {
 173         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 174
 175         if (prio != DCB_ATTR_VALUE_UNDEFINED)
 176                 adapter->temp_dcb_cfg.tc_config[tc].path[0].prio_type = prio;
 177         if (bwg_id != DCB_ATTR_VALUE_UNDEFINED)
 178                 adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_id = bwg_id;
 179         if (bw_pct != DCB_ATTR_VALUE_UNDEFINED)
 180                 adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_percent =
 181                         bw_pct;
 182         if (up_map != DCB_ATTR_VALUE_UNDEFINED)
 183                 adapter->temp_dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap =
 184                         up_map;
 185
 186         if ((adapter->temp_dcb_cfg.tc_config[tc].path[0].prio_type !=
 187              adapter->dcb_cfg.tc_config[tc].path[0].prio_type) ||
 188             (adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_id !=
 189              adapter->dcb_cfg.tc_config[tc].path[0].bwg_id) ||
 190             (adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_percent !=
 191              adapter->dcb_cfg.tc_config[tc].path[0].bwg_percent) ||
 192             (adapter->temp_dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap !=
 193              adapter->dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap))
 194                 adapter->dcb_set_bitmap |= BIT_PG_TX;
 195 }
 196
 197 static void ixgbe_dcbnl_set_pg_bwg_cfg_tx(struct net_device *netdev, int bwg_id,
 198                                           u8 bw_pct)
 199 {
 200         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 201
 202         adapter->temp_dcb_cfg.bw_percentage[0][bwg_id] = bw_pct;
 203
 204         if (adapter->temp_dcb_cfg.bw_percentage[0][bwg_id] !=
 205             adapter->dcb_cfg.bw_percentage[0][bwg_id])
 206                 adapter->dcb_set_bitmap |= BIT_PG_RX;
 207 }
 208
 209 static void ixgbe_dcbnl_set_pg_tc_cfg_rx(struct net_device *netdev, int tc,
 210                                          u8 prio, u8 bwg_id, u8 bw_pct,
 211                                          u8 up_map)
 212 {
 213         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 214
 215         if (prio != DCB_ATTR_VALUE_UNDEFINED)
 216                 adapter->temp_dcb_cfg.tc_config[tc].path[1].prio_type = prio;
 217         if (bwg_id != DCB_ATTR_VALUE_UNDEFINED)
 218                 adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_id = bwg_id;
 219         if (bw_pct != DCB_ATTR_VALUE_UNDEFINED)
 220                 adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_percent =
 221                         bw_pct;
 222         if (up_map != DCB_ATTR_VALUE_UNDEFINED)
 223                 adapter->temp_dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap =
 224                         up_map;
 225
 226         if ((adapter->temp_dcb_cfg.tc_config[tc].path[1].prio_type !=
 227              adapter->dcb_cfg.tc_config[tc].path[1].prio_type) ||
 228             (adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_id !=
 229              adapter->dcb_cfg.tc_config[tc].path[1].bwg_id) ||
 230             (adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_percent !=
 231              adapter->dcb_cfg.tc_config[tc].path[1].bwg_percent) ||
 232             (adapter->temp_dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap !=
 233              adapter->dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap))
 234                 adapter->dcb_set_bitmap |= BIT_PG_RX;
 235 }
 236
 237 static void ixgbe_dcbnl_set_pg_bwg_cfg_rx(struct net_device *netdev, int bwg_id,
 238                                           u8 bw_pct)
 239 {
 240         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 241
 242         adapter->temp_dcb_cfg.bw_percentage[1][bwg_id] = bw_pct;
 243
 244         if (adapter->temp_dcb_cfg.bw_percentage[1][bwg_id] !=
 245             adapter->dcb_cfg.bw_percentage[1][bwg_id])
 246                 adapter->dcb_set_bitmap |= BIT_PG_RX;
 247 }
 248
 249 static void ixgbe_dcbnl_get_pg_tc_cfg_tx(struct net_device *netdev, int tc,
 250                                          u8 *prio, u8 *bwg_id, u8 *bw_pct,
 251                                          u8 *up_map)
 252 {
 253         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 254
 255         *prio = adapter->dcb_cfg.tc_config[tc].path[0].prio_type;
 256         *bwg_id = adapter->dcb_cfg.tc_config[tc].path[0].bwg_id;
 257         *bw_pct = adapter->dcb_cfg.tc_config[tc].path[0].bwg_percent;
 258         *up_map = adapter->dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap;
 259 }
 260
 261 static void ixgbe_dcbnl_get_pg_bwg_cfg_tx(struct net_device *netdev, int bwg_id,
 262                                           u8 *bw_pct)
 263 {
 264         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 265
 266         *bw_pct = adapter->dcb_cfg.bw_percentage[0][bwg_id];
 267 }
 268
 269 static void ixgbe_dcbnl_get_pg_tc_cfg_rx(struct net_device *netdev, int tc,
 270                                          u8 *prio, u8 *bwg_id, u8 *bw_pct,
 271                                          u8 *up_map)
 272 {
 273         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 274
 275         *prio = adapter->dcb_cfg.tc_config[tc].path[1].prio_type;
 276         *bwg_id = adapter->dcb_cfg.tc_config[tc].path[1].bwg_id;
 277         *bw_pct = adapter->dcb_cfg.tc_config[tc].path[1].bwg_percent;
 278         *up_map = adapter->dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap;
 279 }
 280
 281 static void ixgbe_dcbnl_get_pg_bwg_cfg_rx(struct net_device *netdev, int bwg_id,
 282                                           u8 *bw_pct)
 283 {
 284         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 285
 286         *bw_pct = adapter->dcb_cfg.bw_percentage[1][bwg_id];
 287 }
 288
 289 static void ixgbe_dcbnl_set_pfc_cfg(struct net_device *netdev, int priority,
 290                                     u8 setting)
 291 {
 292         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 293
 294         adapter->temp_dcb_cfg.tc_config[priority].dcb_pfc = setting;
 295         if (adapter->temp_dcb_cfg.tc_config[priority].dcb_pfc !=
 296             adapter->dcb_cfg.tc_config[priority].dcb_pfc) {
 297                 adapter->dcb_set_bitmap |= BIT_PFC;
 298                 adapter->temp_dcb_cfg.pfc_mode_enable = true;
 299         }
 300 }
 301
 302 static void ixgbe_dcbnl_get_pfc_cfg(struct net_device *netdev, int priority,
 303                                     u8 *setting)
 304 {
 305         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 306
 307         *setting = adapter->dcb_cfg.tc_config[priority].dcb_pfc;
 308 }
 309
 310 static u8 ixgbe_dcbnl_set_all(struct net_device *netdev)
 311 {
 312         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 313         int ret;
 314
 315         adapter->dcb_set_bitmap &= ~BIT_BCN;    /* no set for BCN */
 316         if (!adapter->dcb_set_bitmap)
 317                 return 1;
 318
 319         while (test_and_set_bit(__IXGBE_RESETTING, &adapter->state))
 320                 msleep(1);
 321
 322         if (netif_running(netdev))
 323                 ixgbe_down(adapter);
 324
 325         ret = ixgbe_copy_dcb_cfg(&adapter->temp_dcb_cfg, &adapter->dcb_cfg,
 326                                  adapter->ring_feature[RING_F_DCB].indices);
 327         if (ret) {
 328                 clear_bit(__IXGBE_RESETTING, &adapter->state);
 329                 return ret;
 330         }
 331
 332         if (netif_running(netdev))
 333                 ixgbe_up(adapter);
 334
 335         adapter->dcb_set_bitmap = 0x00;
 336         clear_bit(__IXGBE_RESETTING, &adapter->state);
 337         return ret;
 338 }
 339
 340 static u8 ixgbe_dcbnl_getcap(struct net_device *netdev, int capid, u8 *cap)
 341 {
 342         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 343         u8 rval = 0;
 344
 345         if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
 346                 switch (capid) {
 347                 case DCB_CAP_ATTR_PG:
 348                         *cap = true;
 349                         break;
 350                 case DCB_CAP_ATTR_PFC:
 351                         *cap = true;
 352                         break;
 353                 case DCB_CAP_ATTR_UP2TC:
 354                         *cap = false;
 355                         break;
 356                 case DCB_CAP_ATTR_PG_TCS:
 357                         *cap = 0x80;
 358                         break;
 359                 case DCB_CAP_ATTR_PFC_TCS:
 360                         *cap = 0x80;
 361                         break;
 362                 case DCB_CAP_ATTR_GSP:
 363                         *cap = true;
 364                         break;
 365                 case DCB_CAP_ATTR_BCN:
 366                         *cap = false;
 367                         break;
 368                 default:
 369                         rval = -EINVAL;
 370                         break;
 371                 }
 372         } else {
 373                 rval = -EINVAL;
 374         }
 375
 376         return rval;
 377 }
 378
 379 static u8 ixgbe_dcbnl_getnumtcs(struct net_device *netdev, int tcid, u8 *num)
 380 {
 381         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 382         u8 rval = 0;
 383
 384         if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
 385                 switch (tcid) {
 386                 case DCB_NUMTCS_ATTR_PG:
 387                         *num = MAX_TRAFFIC_CLASS;
 388                         break;
 389                 case DCB_NUMTCS_ATTR_PFC:
 390                         *num = MAX_TRAFFIC_CLASS;
 391                         break;
 392                 default:
 393                         rval = -EINVAL;
 394                         break;
 395                 }
 396         } else {
 397                 rval = -EINVAL;
 398         }
 399
 400         return rval;
 401 }
 402
 403 static u8 ixgbe_dcbnl_setnumtcs(struct net_device *netdev, int tcid, u8 num)
 404 {
 405         return -EINVAL;
 406 }
 407
 408 static u8 ixgbe_dcbnl_getpfcstate(struct net_device *netdev)
 409 {
 410         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 411
 412         return !!(adapter->flags & IXGBE_FLAG_DCB_ENABLED);
 413 }
 414
 415 static void ixgbe_dcbnl_setpfcstate(struct net_device *netdev, u8 state)
 416 {
 417         return;
 418 }
 419
 420 struct dcbnl_rtnl_ops dcbnl_ops = {
 421         .getstate       = ixgbe_dcbnl_get_state,
 422         .setstate       = ixgbe_dcbnl_set_state,
 423         .getpermhwaddr  = ixgbe_dcbnl_get_perm_hw_addr,
 424         .setpgtccfgtx   = ixgbe_dcbnl_set_pg_tc_cfg_tx,
 425         .setpgbwgcfgtx  = ixgbe_dcbnl_set_pg_bwg_cfg_tx,
 426         .setpgtccfgrx   = ixgbe_dcbnl_set_pg_tc_cfg_rx,
 427         .setpgbwgcfgrx  = ixgbe_dcbnl_set_pg_bwg_cfg_rx,
 428         .getpgtccfgtx   = ixgbe_dcbnl_get_pg_tc_cfg_tx,
 429         .getpgbwgcfgtx  = ixgbe_dcbnl_get_pg_bwg_cfg_tx,
 430         .getpgtccfgrx   = ixgbe_dcbnl_get_pg_tc_cfg_rx,
 431         .getpgbwgcfgrx  = ixgbe_dcbnl_get_pg_bwg_cfg_rx,
 432         .setpfccfg      = ixgbe_dcbnl_set_pfc_cfg,
 433         .getpfccfg      = ixgbe_dcbnl_get_pfc_cfg,
 434         .setall         = ixgbe_dcbnl_set_all,
 435         .getcap         = ixgbe_dcbnl_getcap,
 436         .getnumtcs      = ixgbe_dcbnl_getnumtcs,
 437         .setnumtcs      = ixgbe_dcbnl_setnumtcs,
 438         .getpfcstate    = ixgbe_dcbnl_getpfcstate,
 439         .setpfcstate    = ixgbe_dcbnl_setpfcstate,
 440 };
 441