ixgbe: DCB remove ixgbe_fcoe_getapp routine
[linux-3.10.git] / drivers / net / 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         if (state > 0) {
118                 /* Turn on DCB */
119                 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED)
120                         goto out;
121
122                 if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED)) {
123                         e_err(drv, "Enable failed, needs MSI-X\n");
124                         err = 1;
125                         goto out;
126                 }
127
128                 if (netif_running(netdev))
129                         netdev->netdev_ops->ndo_stop(netdev);
130                 ixgbe_clear_interrupt_scheme(adapter);
131
132                 adapter->flags &= ~IXGBE_FLAG_RSS_ENABLED;
133                 switch (adapter->hw.mac.type) {
134                 case ixgbe_mac_82598EB:
135                         adapter->last_lfc_mode = adapter->hw.fc.current_mode;
136                         adapter->hw.fc.requested_mode = ixgbe_fc_none;
137                         break;
138                 case ixgbe_mac_82599EB:
139                 case ixgbe_mac_X540:
140                         adapter->flags &= ~IXGBE_FLAG_FDIR_HASH_CAPABLE;
141                         adapter->flags &= ~IXGBE_FLAG_FDIR_PERFECT_CAPABLE;
142                         break;
143                 default:
144                         break;
145                 }
146
147                 adapter->flags |= IXGBE_FLAG_DCB_ENABLED;
148                 ixgbe_init_interrupt_scheme(adapter);
149                 if (netif_running(netdev))
150                         netdev->netdev_ops->ndo_open(netdev);
151         } else {
152                 /* Turn off DCB */
153                 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
154                         if (netif_running(netdev))
155                                 netdev->netdev_ops->ndo_stop(netdev);
156                         ixgbe_clear_interrupt_scheme(adapter);
157
158                         adapter->hw.fc.requested_mode = adapter->last_lfc_mode;
159                         adapter->temp_dcb_cfg.pfc_mode_enable = false;
160                         adapter->dcb_cfg.pfc_mode_enable = false;
161                         adapter->flags &= ~IXGBE_FLAG_DCB_ENABLED;
162                         adapter->flags |= IXGBE_FLAG_RSS_ENABLED;
163                         switch (adapter->hw.mac.type) {
164                         case ixgbe_mac_82599EB:
165                         case ixgbe_mac_X540:
166                                 adapter->flags |= IXGBE_FLAG_FDIR_HASH_CAPABLE;
167                                 break;
168                         default:
169                                 break;
170                         }
171
172                         ixgbe_init_interrupt_scheme(adapter);
173                         if (netif_running(netdev))
174                                 netdev->netdev_ops->ndo_open(netdev);
175                 }
176         }
177 out:
178         return err;
179 }
180
181 static void ixgbe_dcbnl_get_perm_hw_addr(struct net_device *netdev,
182                                          u8 *perm_addr)
183 {
184         struct ixgbe_adapter *adapter = netdev_priv(netdev);
185         int i, j;
186
187         memset(perm_addr, 0xff, MAX_ADDR_LEN);
188
189         for (i = 0; i < netdev->addr_len; i++)
190                 perm_addr[i] = adapter->hw.mac.perm_addr[i];
191
192         switch (adapter->hw.mac.type) {
193         case ixgbe_mac_82599EB:
194         case ixgbe_mac_X540:
195                 for (j = 0; j < netdev->addr_len; j++, i++)
196                         perm_addr[i] = adapter->hw.mac.san_addr[j];
197                 break;
198         default:
199                 break;
200         }
201 }
202
203 static void ixgbe_dcbnl_set_pg_tc_cfg_tx(struct net_device *netdev, int tc,
204                                          u8 prio, u8 bwg_id, u8 bw_pct,
205                                          u8 up_map)
206 {
207         struct ixgbe_adapter *adapter = netdev_priv(netdev);
208
209         if (prio != DCB_ATTR_VALUE_UNDEFINED)
210                 adapter->temp_dcb_cfg.tc_config[tc].path[0].prio_type = prio;
211         if (bwg_id != DCB_ATTR_VALUE_UNDEFINED)
212                 adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_id = bwg_id;
213         if (bw_pct != DCB_ATTR_VALUE_UNDEFINED)
214                 adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_percent =
215                         bw_pct;
216         if (up_map != DCB_ATTR_VALUE_UNDEFINED)
217                 adapter->temp_dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap =
218                         up_map;
219
220         if ((adapter->temp_dcb_cfg.tc_config[tc].path[0].prio_type !=
221              adapter->dcb_cfg.tc_config[tc].path[0].prio_type) ||
222             (adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_id !=
223              adapter->dcb_cfg.tc_config[tc].path[0].bwg_id) ||
224             (adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_percent !=
225              adapter->dcb_cfg.tc_config[tc].path[0].bwg_percent) ||
226             (adapter->temp_dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap !=
227              adapter->dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap))
228                 adapter->dcb_set_bitmap |= BIT_PG_TX;
229 }
230
231 static void ixgbe_dcbnl_set_pg_bwg_cfg_tx(struct net_device *netdev, int bwg_id,
232                                           u8 bw_pct)
233 {
234         struct ixgbe_adapter *adapter = netdev_priv(netdev);
235
236         adapter->temp_dcb_cfg.bw_percentage[0][bwg_id] = bw_pct;
237
238         if (adapter->temp_dcb_cfg.bw_percentage[0][bwg_id] !=
239             adapter->dcb_cfg.bw_percentage[0][bwg_id])
240                 adapter->dcb_set_bitmap |= BIT_PG_TX;
241 }
242
243 static void ixgbe_dcbnl_set_pg_tc_cfg_rx(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         if (prio != DCB_ATTR_VALUE_UNDEFINED)
250                 adapter->temp_dcb_cfg.tc_config[tc].path[1].prio_type = prio;
251         if (bwg_id != DCB_ATTR_VALUE_UNDEFINED)
252                 adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_id = bwg_id;
253         if (bw_pct != DCB_ATTR_VALUE_UNDEFINED)
254                 adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_percent =
255                         bw_pct;
256         if (up_map != DCB_ATTR_VALUE_UNDEFINED)
257                 adapter->temp_dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap =
258                         up_map;
259
260         if ((adapter->temp_dcb_cfg.tc_config[tc].path[1].prio_type !=
261              adapter->dcb_cfg.tc_config[tc].path[1].prio_type) ||
262             (adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_id !=
263              adapter->dcb_cfg.tc_config[tc].path[1].bwg_id) ||
264             (adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_percent !=
265              adapter->dcb_cfg.tc_config[tc].path[1].bwg_percent) ||
266             (adapter->temp_dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap !=
267              adapter->dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap))
268                 adapter->dcb_set_bitmap |= BIT_PG_RX;
269 }
270
271 static void ixgbe_dcbnl_set_pg_bwg_cfg_rx(struct net_device *netdev, int bwg_id,
272                                           u8 bw_pct)
273 {
274         struct ixgbe_adapter *adapter = netdev_priv(netdev);
275
276         adapter->temp_dcb_cfg.bw_percentage[1][bwg_id] = bw_pct;
277
278         if (adapter->temp_dcb_cfg.bw_percentage[1][bwg_id] !=
279             adapter->dcb_cfg.bw_percentage[1][bwg_id])
280                 adapter->dcb_set_bitmap |= BIT_PG_RX;
281 }
282
283 static void ixgbe_dcbnl_get_pg_tc_cfg_tx(struct net_device *netdev, int tc,
284                                          u8 *prio, u8 *bwg_id, u8 *bw_pct,
285                                          u8 *up_map)
286 {
287         struct ixgbe_adapter *adapter = netdev_priv(netdev);
288
289         *prio = adapter->dcb_cfg.tc_config[tc].path[0].prio_type;
290         *bwg_id = adapter->dcb_cfg.tc_config[tc].path[0].bwg_id;
291         *bw_pct = adapter->dcb_cfg.tc_config[tc].path[0].bwg_percent;
292         *up_map = adapter->dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap;
293 }
294
295 static void ixgbe_dcbnl_get_pg_bwg_cfg_tx(struct net_device *netdev, int bwg_id,
296                                           u8 *bw_pct)
297 {
298         struct ixgbe_adapter *adapter = netdev_priv(netdev);
299
300         *bw_pct = adapter->dcb_cfg.bw_percentage[0][bwg_id];
301 }
302
303 static void ixgbe_dcbnl_get_pg_tc_cfg_rx(struct net_device *netdev, int tc,
304                                          u8 *prio, u8 *bwg_id, u8 *bw_pct,
305                                          u8 *up_map)
306 {
307         struct ixgbe_adapter *adapter = netdev_priv(netdev);
308
309         *prio = adapter->dcb_cfg.tc_config[tc].path[1].prio_type;
310         *bwg_id = adapter->dcb_cfg.tc_config[tc].path[1].bwg_id;
311         *bw_pct = adapter->dcb_cfg.tc_config[tc].path[1].bwg_percent;
312         *up_map = adapter->dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap;
313 }
314
315 static void ixgbe_dcbnl_get_pg_bwg_cfg_rx(struct net_device *netdev, int bwg_id,
316                                           u8 *bw_pct)
317 {
318         struct ixgbe_adapter *adapter = netdev_priv(netdev);
319
320         *bw_pct = adapter->dcb_cfg.bw_percentage[1][bwg_id];
321 }
322
323 static void ixgbe_dcbnl_set_pfc_cfg(struct net_device *netdev, int priority,
324                                     u8 setting)
325 {
326         struct ixgbe_adapter *adapter = netdev_priv(netdev);
327
328         adapter->temp_dcb_cfg.tc_config[priority].dcb_pfc = setting;
329         if (adapter->temp_dcb_cfg.tc_config[priority].dcb_pfc !=
330             adapter->dcb_cfg.tc_config[priority].dcb_pfc) {
331                 adapter->dcb_set_bitmap |= BIT_PFC;
332                 adapter->temp_dcb_cfg.pfc_mode_enable = true;
333         }
334 }
335
336 static void ixgbe_dcbnl_get_pfc_cfg(struct net_device *netdev, int priority,
337                                     u8 *setting)
338 {
339         struct ixgbe_adapter *adapter = netdev_priv(netdev);
340
341         *setting = adapter->dcb_cfg.tc_config[priority].dcb_pfc;
342 }
343
344 static u8 ixgbe_dcbnl_set_all(struct net_device *netdev)
345 {
346         struct ixgbe_adapter *adapter = netdev_priv(netdev);
347         int ret;
348
349         if (!adapter->dcb_set_bitmap ||
350             !(adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE))
351                 return DCB_NO_HW_CHG;
352
353         ret = ixgbe_copy_dcb_cfg(&adapter->temp_dcb_cfg, &adapter->dcb_cfg,
354                                  adapter->ring_feature[RING_F_DCB].indices);
355
356         if (ret)
357                 return DCB_NO_HW_CHG;
358
359         /*
360          * Only take down the adapter if an app change occured. FCoE
361          * may shuffle tx rings in this case and this can not be done
362          * without a reset currently.
363          */
364         if (adapter->dcb_set_bitmap & BIT_APP_UPCHG) {
365                 while (test_and_set_bit(__IXGBE_RESETTING, &adapter->state))
366                         msleep(1);
367
368                 if (netif_running(netdev))
369                         netdev->netdev_ops->ndo_stop(netdev);
370                 ixgbe_clear_interrupt_scheme(adapter);
371         }
372
373         if (adapter->dcb_cfg.pfc_mode_enable) {
374                 switch (adapter->hw.mac.type) {
375                 case ixgbe_mac_82599EB:
376                 case ixgbe_mac_X540:
377                         if (adapter->hw.fc.current_mode != ixgbe_fc_pfc)
378                                 adapter->last_lfc_mode =
379                                                   adapter->hw.fc.current_mode;
380                         break;
381                 default:
382                         break;
383                 }
384                 adapter->hw.fc.requested_mode = ixgbe_fc_pfc;
385         } else {
386                 switch (adapter->hw.mac.type) {
387                 case ixgbe_mac_82598EB:
388                         adapter->hw.fc.requested_mode = ixgbe_fc_none;
389                         break;
390                 case ixgbe_mac_82599EB:
391                 case ixgbe_mac_X540:
392                         adapter->hw.fc.requested_mode = adapter->last_lfc_mode;
393                         break;
394                 default:
395                         break;
396                 }
397         }
398
399         if (adapter->dcb_set_bitmap & BIT_APP_UPCHG) {
400                 ixgbe_init_interrupt_scheme(adapter);
401                 if (netif_running(netdev))
402                         netdev->netdev_ops->ndo_open(netdev);
403                 ret = DCB_HW_CHG_RST;
404         }
405
406         if (adapter->dcb_set_bitmap & BIT_PFC) {
407                 u8 pfc_en;
408                 ixgbe_dcb_unpack_pfc(&adapter->dcb_cfg, &pfc_en);
409                 ixgbe_dcb_hw_pfc_config(&adapter->hw, pfc_en);
410                 ret = DCB_HW_CHG;
411         }
412
413         if (adapter->dcb_set_bitmap & (BIT_PG_TX|BIT_PG_RX)) {
414                 u16 refill[MAX_TRAFFIC_CLASS], max[MAX_TRAFFIC_CLASS];
415                 u8 bwg_id[MAX_TRAFFIC_CLASS], prio_type[MAX_TRAFFIC_CLASS];
416                 int max_frame = adapter->netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
417
418 #ifdef CONFIG_FCOE
419                 if (adapter->netdev->features & NETIF_F_FCOE_MTU)
420                         max_frame = max(max_frame, IXGBE_FCOE_JUMBO_FRAME_SIZE);
421 #endif
422
423                 ixgbe_dcb_calculate_tc_credits(&adapter->hw, &adapter->dcb_cfg,
424                                                max_frame, DCB_TX_CONFIG);
425                 ixgbe_dcb_calculate_tc_credits(&adapter->hw, &adapter->dcb_cfg,
426                                                max_frame, DCB_RX_CONFIG);
427
428                 ixgbe_dcb_unpack_refill(&adapter->dcb_cfg,
429                                         DCB_TX_CONFIG, refill);
430                 ixgbe_dcb_unpack_max(&adapter->dcb_cfg, max);
431                 ixgbe_dcb_unpack_bwgid(&adapter->dcb_cfg,
432                                        DCB_TX_CONFIG, bwg_id);
433                 ixgbe_dcb_unpack_prio(&adapter->dcb_cfg,
434                                       DCB_TX_CONFIG, prio_type);
435
436                 ixgbe_dcb_hw_ets_config(&adapter->hw, refill, max,
437                                         bwg_id, prio_type);
438         }
439
440         if (adapter->dcb_cfg.pfc_mode_enable)
441                 adapter->hw.fc.current_mode = ixgbe_fc_pfc;
442
443         if (adapter->dcb_set_bitmap & BIT_APP_UPCHG)
444                 clear_bit(__IXGBE_RESETTING, &adapter->state);
445         adapter->dcb_set_bitmap = 0x00;
446         return ret;
447 }
448
449 static u8 ixgbe_dcbnl_getcap(struct net_device *netdev, int capid, u8 *cap)
450 {
451         struct ixgbe_adapter *adapter = netdev_priv(netdev);
452
453         switch (capid) {
454         case DCB_CAP_ATTR_PG:
455                 *cap = true;
456                 break;
457         case DCB_CAP_ATTR_PFC:
458                 *cap = true;
459                 break;
460         case DCB_CAP_ATTR_UP2TC:
461                 *cap = false;
462                 break;
463         case DCB_CAP_ATTR_PG_TCS:
464                 *cap = 0x80;
465                 break;
466         case DCB_CAP_ATTR_PFC_TCS:
467                 *cap = 0x80;
468                 break;
469         case DCB_CAP_ATTR_GSP:
470                 *cap = true;
471                 break;
472         case DCB_CAP_ATTR_BCN:
473                 *cap = false;
474                 break;
475         case DCB_CAP_ATTR_DCBX:
476                 *cap = adapter->dcbx_cap;
477                 break;
478         default:
479                 *cap = false;
480                 break;
481         }
482
483         return 0;
484 }
485
486 static u8 ixgbe_dcbnl_getnumtcs(struct net_device *netdev, int tcid, u8 *num)
487 {
488         struct ixgbe_adapter *adapter = netdev_priv(netdev);
489         u8 rval = 0;
490
491         if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
492                 switch (tcid) {
493                 case DCB_NUMTCS_ATTR_PG:
494                         *num = MAX_TRAFFIC_CLASS;
495                         break;
496                 case DCB_NUMTCS_ATTR_PFC:
497                         *num = MAX_TRAFFIC_CLASS;
498                         break;
499                 default:
500                         rval = -EINVAL;
501                         break;
502                 }
503         } else {
504                 rval = -EINVAL;
505         }
506
507         return rval;
508 }
509
510 static u8 ixgbe_dcbnl_setnumtcs(struct net_device *netdev, int tcid, u8 num)
511 {
512         return -EINVAL;
513 }
514
515 static u8 ixgbe_dcbnl_getpfcstate(struct net_device *netdev)
516 {
517         struct ixgbe_adapter *adapter = netdev_priv(netdev);
518
519         return adapter->dcb_cfg.pfc_mode_enable;
520 }
521
522 static void ixgbe_dcbnl_setpfcstate(struct net_device *netdev, u8 state)
523 {
524         struct ixgbe_adapter *adapter = netdev_priv(netdev);
525
526         adapter->temp_dcb_cfg.pfc_mode_enable = state;
527         if (adapter->temp_dcb_cfg.pfc_mode_enable !=
528                 adapter->dcb_cfg.pfc_mode_enable)
529                 adapter->dcb_set_bitmap |= BIT_PFC;
530 }
531
532 /**
533  * ixgbe_dcbnl_getapp - retrieve the DCBX application user priority
534  * @netdev : the corresponding netdev
535  * @idtype : identifies the id as ether type or TCP/UDP port number
536  * @id: id is either ether type or TCP/UDP port number
537  *
538  * Returns : on success, returns a non-zero 802.1p user priority bitmap
539  * otherwise returns 0 as the invalid user priority bitmap to indicate an
540  * error.
541  */
542 static u8 ixgbe_dcbnl_getapp(struct net_device *netdev, u8 idtype, u16 id)
543 {
544         struct ixgbe_adapter *adapter = netdev_priv(netdev);
545         struct dcb_app app = {
546                                 .selector = idtype,
547                                 .protocol = id,
548                              };
549
550         if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE))
551                 return 0;
552
553         return dcb_getapp(netdev, &app);
554 }
555
556 /**
557  * ixgbe_dcbnl_setapp - set the DCBX application user priority
558  * @netdev : the corresponding netdev
559  * @idtype : identifies the id as ether type or TCP/UDP port number
560  * @id: id is either ether type or TCP/UDP port number
561  * @up: the 802.1p user priority bitmap
562  *
563  * Returns : 0 on success or 1 on error
564  */
565 static u8 ixgbe_dcbnl_setapp(struct net_device *netdev,
566                              u8 idtype, u16 id, u8 up)
567 {
568         struct ixgbe_adapter *adapter = netdev_priv(netdev);
569         u8 rval = 1;
570         struct dcb_app app = {
571                               .selector = idtype,
572                               .protocol = id,
573                               .priority = up
574                              };
575
576         if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE))
577                 return rval;
578
579         rval = dcb_setapp(netdev, &app);
580
581         switch (idtype) {
582         case DCB_APP_IDTYPE_ETHTYPE:
583 #ifdef IXGBE_FCOE
584                 if (id == ETH_P_FCOE) {
585                         u8 old_tc;
586
587                         /* Get current programmed tc */
588                         old_tc = adapter->fcoe.tc;
589                         rval = ixgbe_fcoe_setapp(adapter, up);
590
591                         if (rval ||
592                            !(adapter->flags & IXGBE_FLAG_DCB_ENABLED) ||
593                            !(adapter->flags & IXGBE_FLAG_FCOE_ENABLED))
594                                 break;
595
596                         /* The FCoE application priority may be changed multiple
597                          * times in quick sucession with switches that build up
598                          * TLVs. To avoid creating uneeded device resets this
599                          * checks the actual HW configuration and clears
600                          * BIT_APP_UPCHG if a HW configuration change is not
601                          * need
602                          */
603                         if (old_tc == adapter->fcoe.tc)
604                                 adapter->dcb_set_bitmap &= ~BIT_APP_UPCHG;
605                         else
606                                 adapter->dcb_set_bitmap |= BIT_APP_UPCHG;
607                 }
608 #endif
609                 break;
610         case DCB_APP_IDTYPE_PORTNUM:
611                 break;
612         default:
613                 break;
614         }
615         return rval;
616 }
617
618 static int ixgbe_dcbnl_ieee_getets(struct net_device *dev,
619                                    struct ieee_ets *ets)
620 {
621         struct ixgbe_adapter *adapter = netdev_priv(dev);
622         struct ieee_ets *my_ets = adapter->ixgbe_ieee_ets;
623
624         /* No IEEE PFC settings available */
625         if (!my_ets)
626                 return -EINVAL;
627
628         ets->ets_cap = MAX_TRAFFIC_CLASS;
629         ets->cbs = my_ets->cbs;
630         memcpy(ets->tc_tx_bw, my_ets->tc_tx_bw, sizeof(ets->tc_tx_bw));
631         memcpy(ets->tc_rx_bw, my_ets->tc_rx_bw, sizeof(ets->tc_rx_bw));
632         memcpy(ets->tc_tsa, my_ets->tc_tsa, sizeof(ets->tc_tsa));
633         memcpy(ets->prio_tc, my_ets->prio_tc, sizeof(ets->prio_tc));
634         return 0;
635 }
636
637 static int ixgbe_dcbnl_ieee_setets(struct net_device *dev,
638                                    struct ieee_ets *ets)
639 {
640         struct ixgbe_adapter *adapter = netdev_priv(dev);
641         __u16 refill[IEEE_8021QAZ_MAX_TCS], max[IEEE_8021QAZ_MAX_TCS];
642         int max_frame = dev->mtu + ETH_HLEN + ETH_FCS_LEN;
643         int err;
644         /* naively give each TC a bwg to map onto CEE hardware */
645         __u8 bwg_id[IEEE_8021QAZ_MAX_TCS] = {0, 1, 2, 3, 4, 5, 6, 7};
646
647         if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
648                 return -EINVAL;
649
650         if (!adapter->ixgbe_ieee_ets) {
651                 adapter->ixgbe_ieee_ets = kmalloc(sizeof(struct ieee_ets),
652                                                   GFP_KERNEL);
653                 if (!adapter->ixgbe_ieee_ets)
654                         return -ENOMEM;
655         }
656
657         memcpy(adapter->ixgbe_ieee_ets, ets, sizeof(*adapter->ixgbe_ieee_ets));
658
659         ixgbe_ieee_credits(ets->tc_tx_bw, refill, max, max_frame);
660         err = ixgbe_dcb_hw_ets_config(&adapter->hw, refill, max,
661                                       bwg_id, ets->tc_tsa);
662         return err;
663 }
664
665 static int ixgbe_dcbnl_ieee_getpfc(struct net_device *dev,
666                                    struct ieee_pfc *pfc)
667 {
668         struct ixgbe_adapter *adapter = netdev_priv(dev);
669         struct ieee_pfc *my_pfc = adapter->ixgbe_ieee_pfc;
670         int i;
671
672         /* No IEEE PFC settings available */
673         if (!my_pfc)
674                 return -EINVAL;
675
676         pfc->pfc_cap = MAX_TRAFFIC_CLASS;
677         pfc->pfc_en = my_pfc->pfc_en;
678         pfc->mbc = my_pfc->mbc;
679         pfc->delay = my_pfc->delay;
680
681         for (i = 0; i < MAX_TRAFFIC_CLASS; i++) {
682                 pfc->requests[i] = adapter->stats.pxoffrxc[i];
683                 pfc->indications[i] = adapter->stats.pxofftxc[i];
684         }
685
686         return 0;
687 }
688
689 static int ixgbe_dcbnl_ieee_setpfc(struct net_device *dev,
690                                    struct ieee_pfc *pfc)
691 {
692         struct ixgbe_adapter *adapter = netdev_priv(dev);
693         int err;
694
695         if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
696                 return -EINVAL;
697
698         if (!adapter->ixgbe_ieee_pfc) {
699                 adapter->ixgbe_ieee_pfc = kmalloc(sizeof(struct ieee_pfc),
700                                                   GFP_KERNEL);
701                 if (!adapter->ixgbe_ieee_pfc)
702                         return -ENOMEM;
703         }
704
705         memcpy(adapter->ixgbe_ieee_pfc, pfc, sizeof(*adapter->ixgbe_ieee_pfc));
706         err = ixgbe_dcb_hw_pfc_config(&adapter->hw, pfc->pfc_en);
707         return err;
708 }
709
710 static int ixgbe_dcbnl_ieee_setapp(struct net_device *dev,
711                                    struct dcb_app *app)
712 {
713         struct ixgbe_adapter *adapter = netdev_priv(dev);
714
715         if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
716                 return -EINVAL;
717 #ifdef IXGBE_FCOE
718         if (app->selector == 1 && app->protocol == ETH_P_FCOE) {
719                 if (adapter->fcoe.tc == app->priority)
720                         goto setapp;
721
722                 /* In IEEE mode map up to tc 1:1 */
723                 adapter->fcoe.tc = app->priority;
724                 adapter->fcoe.up = app->priority;
725
726                 /* Force hardware reset required to push FCoE
727                  * setup on {tx|rx}_rings
728                  */
729                 adapter->dcb_set_bitmap |= BIT_APP_UPCHG;
730                 ixgbe_dcbnl_set_all(dev);
731         }
732
733 setapp:
734 #endif
735         dcb_setapp(dev, app);
736         return 0;
737 }
738
739 static u8 ixgbe_dcbnl_getdcbx(struct net_device *dev)
740 {
741         struct ixgbe_adapter *adapter = netdev_priv(dev);
742         return adapter->dcbx_cap;
743 }
744
745 static u8 ixgbe_dcbnl_setdcbx(struct net_device *dev, u8 mode)
746 {
747         struct ixgbe_adapter *adapter = netdev_priv(dev);
748         struct ieee_ets ets = {0};
749         struct ieee_pfc pfc = {0};
750
751         /* no support for LLD_MANAGED modes or CEE+IEEE */
752         if ((mode & DCB_CAP_DCBX_LLD_MANAGED) ||
753             ((mode & DCB_CAP_DCBX_VER_IEEE) && (mode & DCB_CAP_DCBX_VER_CEE)) ||
754             !(mode & DCB_CAP_DCBX_HOST))
755                 return 1;
756
757         if (mode == adapter->dcbx_cap)
758                 return 0;
759
760         adapter->dcbx_cap = mode;
761
762         /* ETS and PFC defaults */
763         ets.ets_cap = 8;
764         pfc.pfc_cap = 8;
765
766         if (mode & DCB_CAP_DCBX_VER_IEEE) {
767                 ixgbe_dcbnl_ieee_setets(dev, &ets);
768                 ixgbe_dcbnl_ieee_setpfc(dev, &pfc);
769         } else if (mode & DCB_CAP_DCBX_VER_CEE) {
770                 adapter->dcb_set_bitmap |= (BIT_PFC & BIT_PG_TX & BIT_PG_RX);
771                 ixgbe_dcbnl_set_all(dev);
772         } else {
773                 /* Drop into single TC mode strict priority as this
774                  * indicates CEE and IEEE versions are disabled
775                  */
776                 ixgbe_dcbnl_ieee_setets(dev, &ets);
777                 ixgbe_dcbnl_ieee_setpfc(dev, &pfc);
778                 ixgbe_dcbnl_set_state(dev, 0);
779         }
780
781         return 0;
782 }
783
784 const struct dcbnl_rtnl_ops dcbnl_ops = {
785         .ieee_getets    = ixgbe_dcbnl_ieee_getets,
786         .ieee_setets    = ixgbe_dcbnl_ieee_setets,
787         .ieee_getpfc    = ixgbe_dcbnl_ieee_getpfc,
788         .ieee_setpfc    = ixgbe_dcbnl_ieee_setpfc,
789         .ieee_setapp    = ixgbe_dcbnl_ieee_setapp,
790         .getstate       = ixgbe_dcbnl_get_state,
791         .setstate       = ixgbe_dcbnl_set_state,
792         .getpermhwaddr  = ixgbe_dcbnl_get_perm_hw_addr,
793         .setpgtccfgtx   = ixgbe_dcbnl_set_pg_tc_cfg_tx,
794         .setpgbwgcfgtx  = ixgbe_dcbnl_set_pg_bwg_cfg_tx,
795         .setpgtccfgrx   = ixgbe_dcbnl_set_pg_tc_cfg_rx,
796         .setpgbwgcfgrx  = ixgbe_dcbnl_set_pg_bwg_cfg_rx,
797         .getpgtccfgtx   = ixgbe_dcbnl_get_pg_tc_cfg_tx,
798         .getpgbwgcfgtx  = ixgbe_dcbnl_get_pg_bwg_cfg_tx,
799         .getpgtccfgrx   = ixgbe_dcbnl_get_pg_tc_cfg_rx,
800         .getpgbwgcfgrx  = ixgbe_dcbnl_get_pg_bwg_cfg_rx,
801         .setpfccfg      = ixgbe_dcbnl_set_pfc_cfg,
802         .getpfccfg      = ixgbe_dcbnl_get_pfc_cfg,
803         .setall         = ixgbe_dcbnl_set_all,
804         .getcap         = ixgbe_dcbnl_getcap,
805         .getnumtcs      = ixgbe_dcbnl_getnumtcs,
806         .setnumtcs      = ixgbe_dcbnl_setnumtcs,
807         .getpfcstate    = ixgbe_dcbnl_getpfcstate,
808         .setpfcstate    = ixgbe_dcbnl_setpfcstate,
809         .getapp         = ixgbe_dcbnl_getapp,
810         .setapp         = ixgbe_dcbnl_setapp,
811         .getdcbx        = ixgbe_dcbnl_getdcbx,
812         .setdcbx        = ixgbe_dcbnl_setdcbx,
813 };