Fix common misspellings
[linux-2.6.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                 switch (adapter->hw.mac.type) {
133                 case ixgbe_mac_82598EB:
134                         adapter->last_lfc_mode = adapter->hw.fc.current_mode;
135                         adapter->hw.fc.requested_mode = ixgbe_fc_none;
136                         break;
137                 case ixgbe_mac_82599EB:
138                 case ixgbe_mac_X540:
139                         adapter->flags &= ~IXGBE_FLAG_FDIR_HASH_CAPABLE;
140                         adapter->flags &= ~IXGBE_FLAG_FDIR_PERFECT_CAPABLE;
141                         break;
142                 default:
143                         break;
144                 }
145
146                 adapter->flags |= IXGBE_FLAG_DCB_ENABLED;
147                 if (!netdev_get_num_tc(netdev))
148                         ixgbe_setup_tc(netdev, MAX_TRAFFIC_CLASS);
149
150                 ixgbe_init_interrupt_scheme(adapter);
151                 if (netif_running(netdev))
152                         netdev->netdev_ops->ndo_open(netdev);
153         } else {
154                 /* Turn off DCB */
155                 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
156                         if (netif_running(netdev))
157                                 netdev->netdev_ops->ndo_stop(netdev);
158                         ixgbe_clear_interrupt_scheme(adapter);
159
160                         adapter->hw.fc.requested_mode = adapter->last_lfc_mode;
161                         adapter->temp_dcb_cfg.pfc_mode_enable = false;
162                         adapter->dcb_cfg.pfc_mode_enable = false;
163                         adapter->flags &= ~IXGBE_FLAG_DCB_ENABLED;
164                         switch (adapter->hw.mac.type) {
165                         case ixgbe_mac_82599EB:
166                         case ixgbe_mac_X540:
167                                 adapter->flags |= IXGBE_FLAG_FDIR_HASH_CAPABLE;
168                                 break;
169                         default:
170                                 break;
171                         }
172
173                         ixgbe_setup_tc(netdev, 0);
174
175                         ixgbe_init_interrupt_scheme(adapter);
176                         if (netif_running(netdev))
177                                 netdev->netdev_ops->ndo_open(netdev);
178                 }
179         }
180 out:
181         return err;
182 }
183
184 static void ixgbe_dcbnl_get_perm_hw_addr(struct net_device *netdev,
185                                          u8 *perm_addr)
186 {
187         struct ixgbe_adapter *adapter = netdev_priv(netdev);
188         int i, j;
189
190         memset(perm_addr, 0xff, MAX_ADDR_LEN);
191
192         for (i = 0; i < netdev->addr_len; i++)
193                 perm_addr[i] = adapter->hw.mac.perm_addr[i];
194
195         switch (adapter->hw.mac.type) {
196         case ixgbe_mac_82599EB:
197         case ixgbe_mac_X540:
198                 for (j = 0; j < netdev->addr_len; j++, i++)
199                         perm_addr[i] = adapter->hw.mac.san_addr[j];
200                 break;
201         default:
202                 break;
203         }
204 }
205
206 static void ixgbe_dcbnl_set_pg_tc_cfg_tx(struct net_device *netdev, int tc,
207                                          u8 prio, u8 bwg_id, u8 bw_pct,
208                                          u8 up_map)
209 {
210         struct ixgbe_adapter *adapter = netdev_priv(netdev);
211
212         if (prio != DCB_ATTR_VALUE_UNDEFINED)
213                 adapter->temp_dcb_cfg.tc_config[tc].path[0].prio_type = prio;
214         if (bwg_id != DCB_ATTR_VALUE_UNDEFINED)
215                 adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_id = bwg_id;
216         if (bw_pct != DCB_ATTR_VALUE_UNDEFINED)
217                 adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_percent =
218                         bw_pct;
219         if (up_map != DCB_ATTR_VALUE_UNDEFINED)
220                 adapter->temp_dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap =
221                         up_map;
222
223         if ((adapter->temp_dcb_cfg.tc_config[tc].path[0].prio_type !=
224              adapter->dcb_cfg.tc_config[tc].path[0].prio_type) ||
225             (adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_id !=
226              adapter->dcb_cfg.tc_config[tc].path[0].bwg_id) ||
227             (adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_percent !=
228              adapter->dcb_cfg.tc_config[tc].path[0].bwg_percent) ||
229             (adapter->temp_dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap !=
230              adapter->dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap))
231                 adapter->dcb_set_bitmap |= BIT_PG_TX;
232 }
233
234 static void ixgbe_dcbnl_set_pg_bwg_cfg_tx(struct net_device *netdev, int bwg_id,
235                                           u8 bw_pct)
236 {
237         struct ixgbe_adapter *adapter = netdev_priv(netdev);
238
239         adapter->temp_dcb_cfg.bw_percentage[0][bwg_id] = bw_pct;
240
241         if (adapter->temp_dcb_cfg.bw_percentage[0][bwg_id] !=
242             adapter->dcb_cfg.bw_percentage[0][bwg_id])
243                 adapter->dcb_set_bitmap |= BIT_PG_TX;
244 }
245
246 static void ixgbe_dcbnl_set_pg_tc_cfg_rx(struct net_device *netdev, int tc,
247                                          u8 prio, u8 bwg_id, u8 bw_pct,
248                                          u8 up_map)
249 {
250         struct ixgbe_adapter *adapter = netdev_priv(netdev);
251
252         if (prio != DCB_ATTR_VALUE_UNDEFINED)
253                 adapter->temp_dcb_cfg.tc_config[tc].path[1].prio_type = prio;
254         if (bwg_id != DCB_ATTR_VALUE_UNDEFINED)
255                 adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_id = bwg_id;
256         if (bw_pct != DCB_ATTR_VALUE_UNDEFINED)
257                 adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_percent =
258                         bw_pct;
259         if (up_map != DCB_ATTR_VALUE_UNDEFINED)
260                 adapter->temp_dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap =
261                         up_map;
262
263         if ((adapter->temp_dcb_cfg.tc_config[tc].path[1].prio_type !=
264              adapter->dcb_cfg.tc_config[tc].path[1].prio_type) ||
265             (adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_id !=
266              adapter->dcb_cfg.tc_config[tc].path[1].bwg_id) ||
267             (adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_percent !=
268              adapter->dcb_cfg.tc_config[tc].path[1].bwg_percent) ||
269             (adapter->temp_dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap !=
270              adapter->dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap))
271                 adapter->dcb_set_bitmap |= BIT_PG_RX;
272 }
273
274 static void ixgbe_dcbnl_set_pg_bwg_cfg_rx(struct net_device *netdev, int bwg_id,
275                                           u8 bw_pct)
276 {
277         struct ixgbe_adapter *adapter = netdev_priv(netdev);
278
279         adapter->temp_dcb_cfg.bw_percentage[1][bwg_id] = bw_pct;
280
281         if (adapter->temp_dcb_cfg.bw_percentage[1][bwg_id] !=
282             adapter->dcb_cfg.bw_percentage[1][bwg_id])
283                 adapter->dcb_set_bitmap |= BIT_PG_RX;
284 }
285
286 static void ixgbe_dcbnl_get_pg_tc_cfg_tx(struct net_device *netdev, int tc,
287                                          u8 *prio, u8 *bwg_id, u8 *bw_pct,
288                                          u8 *up_map)
289 {
290         struct ixgbe_adapter *adapter = netdev_priv(netdev);
291
292         *prio = adapter->dcb_cfg.tc_config[tc].path[0].prio_type;
293         *bwg_id = adapter->dcb_cfg.tc_config[tc].path[0].bwg_id;
294         *bw_pct = adapter->dcb_cfg.tc_config[tc].path[0].bwg_percent;
295         *up_map = adapter->dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap;
296 }
297
298 static void ixgbe_dcbnl_get_pg_bwg_cfg_tx(struct net_device *netdev, int bwg_id,
299                                           u8 *bw_pct)
300 {
301         struct ixgbe_adapter *adapter = netdev_priv(netdev);
302
303         *bw_pct = adapter->dcb_cfg.bw_percentage[0][bwg_id];
304 }
305
306 static void ixgbe_dcbnl_get_pg_tc_cfg_rx(struct net_device *netdev, int tc,
307                                          u8 *prio, u8 *bwg_id, u8 *bw_pct,
308                                          u8 *up_map)
309 {
310         struct ixgbe_adapter *adapter = netdev_priv(netdev);
311
312         *prio = adapter->dcb_cfg.tc_config[tc].path[1].prio_type;
313         *bwg_id = adapter->dcb_cfg.tc_config[tc].path[1].bwg_id;
314         *bw_pct = adapter->dcb_cfg.tc_config[tc].path[1].bwg_percent;
315         *up_map = adapter->dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap;
316 }
317
318 static void ixgbe_dcbnl_get_pg_bwg_cfg_rx(struct net_device *netdev, int bwg_id,
319                                           u8 *bw_pct)
320 {
321         struct ixgbe_adapter *adapter = netdev_priv(netdev);
322
323         *bw_pct = adapter->dcb_cfg.bw_percentage[1][bwg_id];
324 }
325
326 static void ixgbe_dcbnl_set_pfc_cfg(struct net_device *netdev, int priority,
327                                     u8 setting)
328 {
329         struct ixgbe_adapter *adapter = netdev_priv(netdev);
330
331         adapter->temp_dcb_cfg.tc_config[priority].dcb_pfc = setting;
332         if (adapter->temp_dcb_cfg.tc_config[priority].dcb_pfc !=
333             adapter->dcb_cfg.tc_config[priority].dcb_pfc) {
334                 adapter->dcb_set_bitmap |= BIT_PFC;
335                 adapter->temp_dcb_cfg.pfc_mode_enable = true;
336         }
337 }
338
339 static void ixgbe_dcbnl_get_pfc_cfg(struct net_device *netdev, int priority,
340                                     u8 *setting)
341 {
342         struct ixgbe_adapter *adapter = netdev_priv(netdev);
343
344         *setting = adapter->dcb_cfg.tc_config[priority].dcb_pfc;
345 }
346
347 static u8 ixgbe_dcbnl_set_all(struct net_device *netdev)
348 {
349         struct ixgbe_adapter *adapter = netdev_priv(netdev);
350         int ret;
351
352         if (!adapter->dcb_set_bitmap ||
353             !(adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE))
354                 return DCB_NO_HW_CHG;
355
356         ret = ixgbe_copy_dcb_cfg(&adapter->temp_dcb_cfg, &adapter->dcb_cfg,
357                                  MAX_TRAFFIC_CLASS);
358
359         if (ret)
360                 return DCB_NO_HW_CHG;
361
362         /*
363          * Only take down the adapter if an app change occurred. FCoE
364          * may shuffle tx rings in this case and this can not be done
365          * without a reset currently.
366          */
367         if (adapter->dcb_set_bitmap & BIT_APP_UPCHG) {
368                 while (test_and_set_bit(__IXGBE_RESETTING, &adapter->state))
369                         msleep(1);
370
371                 if (netif_running(netdev))
372                         netdev->netdev_ops->ndo_stop(netdev);
373                 ixgbe_clear_interrupt_scheme(adapter);
374         }
375
376         if (adapter->dcb_cfg.pfc_mode_enable) {
377                 switch (adapter->hw.mac.type) {
378                 case ixgbe_mac_82599EB:
379                 case ixgbe_mac_X540:
380                         if (adapter->hw.fc.current_mode != ixgbe_fc_pfc)
381                                 adapter->last_lfc_mode =
382                                                   adapter->hw.fc.current_mode;
383                         break;
384                 default:
385                         break;
386                 }
387                 adapter->hw.fc.requested_mode = ixgbe_fc_pfc;
388         } else {
389                 switch (adapter->hw.mac.type) {
390                 case ixgbe_mac_82598EB:
391                         adapter->hw.fc.requested_mode = ixgbe_fc_none;
392                         break;
393                 case ixgbe_mac_82599EB:
394                 case ixgbe_mac_X540:
395                         adapter->hw.fc.requested_mode = adapter->last_lfc_mode;
396                         break;
397                 default:
398                         break;
399                 }
400         }
401
402         if (adapter->dcb_set_bitmap & BIT_APP_UPCHG) {
403                 ixgbe_init_interrupt_scheme(adapter);
404                 if (netif_running(netdev))
405                         netdev->netdev_ops->ndo_open(netdev);
406                 ret = DCB_HW_CHG_RST;
407         }
408
409         if (adapter->dcb_set_bitmap & BIT_PFC) {
410                 u8 pfc_en;
411                 ixgbe_dcb_unpack_pfc(&adapter->dcb_cfg, &pfc_en);
412                 ixgbe_dcb_hw_pfc_config(&adapter->hw, pfc_en);
413                 ret = DCB_HW_CHG;
414         }
415
416         if (adapter->dcb_set_bitmap & (BIT_PG_TX|BIT_PG_RX)) {
417                 u16 refill[MAX_TRAFFIC_CLASS], max[MAX_TRAFFIC_CLASS];
418                 u8 bwg_id[MAX_TRAFFIC_CLASS], prio_type[MAX_TRAFFIC_CLASS];
419                 /* Priority to TC mapping in CEE case default to 1:1 */
420                 u8 prio_tc[MAX_TRAFFIC_CLASS] = {0, 1, 2, 3, 4, 5, 6, 7};
421                 int max_frame = adapter->netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
422
423 #ifdef CONFIG_FCOE
424                 if (adapter->netdev->features & NETIF_F_FCOE_MTU)
425                         max_frame = max(max_frame, IXGBE_FCOE_JUMBO_FRAME_SIZE);
426 #endif
427
428                 ixgbe_dcb_calculate_tc_credits(&adapter->hw, &adapter->dcb_cfg,
429                                                max_frame, DCB_TX_CONFIG);
430                 ixgbe_dcb_calculate_tc_credits(&adapter->hw, &adapter->dcb_cfg,
431                                                max_frame, DCB_RX_CONFIG);
432
433                 ixgbe_dcb_unpack_refill(&adapter->dcb_cfg,
434                                         DCB_TX_CONFIG, refill);
435                 ixgbe_dcb_unpack_max(&adapter->dcb_cfg, max);
436                 ixgbe_dcb_unpack_bwgid(&adapter->dcb_cfg,
437                                        DCB_TX_CONFIG, bwg_id);
438                 ixgbe_dcb_unpack_prio(&adapter->dcb_cfg,
439                                       DCB_TX_CONFIG, prio_type);
440
441                 ixgbe_dcb_hw_ets_config(&adapter->hw, refill, max,
442                                         bwg_id, prio_type, prio_tc);
443         }
444
445         if (adapter->dcb_cfg.pfc_mode_enable)
446                 adapter->hw.fc.current_mode = ixgbe_fc_pfc;
447
448         if (adapter->dcb_set_bitmap & BIT_APP_UPCHG)
449                 clear_bit(__IXGBE_RESETTING, &adapter->state);
450         adapter->dcb_set_bitmap = 0x00;
451         return ret;
452 }
453
454 static u8 ixgbe_dcbnl_getcap(struct net_device *netdev, int capid, u8 *cap)
455 {
456         struct ixgbe_adapter *adapter = netdev_priv(netdev);
457
458         switch (capid) {
459         case DCB_CAP_ATTR_PG:
460                 *cap = true;
461                 break;
462         case DCB_CAP_ATTR_PFC:
463                 *cap = true;
464                 break;
465         case DCB_CAP_ATTR_UP2TC:
466                 *cap = false;
467                 break;
468         case DCB_CAP_ATTR_PG_TCS:
469                 *cap = 0x80;
470                 break;
471         case DCB_CAP_ATTR_PFC_TCS:
472                 *cap = 0x80;
473                 break;
474         case DCB_CAP_ATTR_GSP:
475                 *cap = true;
476                 break;
477         case DCB_CAP_ATTR_BCN:
478                 *cap = false;
479                 break;
480         case DCB_CAP_ATTR_DCBX:
481                 *cap = adapter->dcbx_cap;
482                 break;
483         default:
484                 *cap = false;
485                 break;
486         }
487
488         return 0;
489 }
490
491 static u8 ixgbe_dcbnl_getnumtcs(struct net_device *netdev, int tcid, u8 *num)
492 {
493         struct ixgbe_adapter *adapter = netdev_priv(netdev);
494         u8 rval = 0;
495
496         if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
497                 switch (tcid) {
498                 case DCB_NUMTCS_ATTR_PG:
499                         *num = MAX_TRAFFIC_CLASS;
500                         break;
501                 case DCB_NUMTCS_ATTR_PFC:
502                         *num = MAX_TRAFFIC_CLASS;
503                         break;
504                 default:
505                         rval = -EINVAL;
506                         break;
507                 }
508         } else {
509                 rval = -EINVAL;
510         }
511
512         return rval;
513 }
514
515 static u8 ixgbe_dcbnl_setnumtcs(struct net_device *netdev, int tcid, u8 num)
516 {
517         return -EINVAL;
518 }
519
520 static u8 ixgbe_dcbnl_getpfcstate(struct net_device *netdev)
521 {
522         struct ixgbe_adapter *adapter = netdev_priv(netdev);
523
524         return adapter->dcb_cfg.pfc_mode_enable;
525 }
526
527 static void ixgbe_dcbnl_setpfcstate(struct net_device *netdev, u8 state)
528 {
529         struct ixgbe_adapter *adapter = netdev_priv(netdev);
530
531         adapter->temp_dcb_cfg.pfc_mode_enable = state;
532         if (adapter->temp_dcb_cfg.pfc_mode_enable !=
533                 adapter->dcb_cfg.pfc_mode_enable)
534                 adapter->dcb_set_bitmap |= BIT_PFC;
535 }
536
537 /**
538  * ixgbe_dcbnl_getapp - retrieve the DCBX application user priority
539  * @netdev : the corresponding netdev
540  * @idtype : identifies the id as ether type or TCP/UDP port number
541  * @id: id is either ether type or TCP/UDP port number
542  *
543  * Returns : on success, returns a non-zero 802.1p user priority bitmap
544  * otherwise returns 0 as the invalid user priority bitmap to indicate an
545  * error.
546  */
547 static u8 ixgbe_dcbnl_getapp(struct net_device *netdev, u8 idtype, u16 id)
548 {
549         struct ixgbe_adapter *adapter = netdev_priv(netdev);
550         struct dcb_app app = {
551                                 .selector = idtype,
552                                 .protocol = id,
553                              };
554
555         if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE))
556                 return 0;
557
558         return dcb_getapp(netdev, &app);
559 }
560
561 /**
562  * ixgbe_dcbnl_setapp - set the DCBX application user priority
563  * @netdev : the corresponding netdev
564  * @idtype : identifies the id as ether type or TCP/UDP port number
565  * @id: id is either ether type or TCP/UDP port number
566  * @up: the 802.1p user priority bitmap
567  *
568  * Returns : 0 on success or 1 on error
569  */
570 static u8 ixgbe_dcbnl_setapp(struct net_device *netdev,
571                              u8 idtype, u16 id, u8 up)
572 {
573         struct ixgbe_adapter *adapter = netdev_priv(netdev);
574         u8 rval = 1;
575         struct dcb_app app = {
576                               .selector = idtype,
577                               .protocol = id,
578                               .priority = up
579                              };
580
581         if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE))
582                 return rval;
583
584         rval = dcb_setapp(netdev, &app);
585
586         switch (idtype) {
587         case DCB_APP_IDTYPE_ETHTYPE:
588 #ifdef IXGBE_FCOE
589                 if (id == ETH_P_FCOE) {
590                         u8 old_tc;
591
592                         /* Get current programmed tc */
593                         old_tc = adapter->fcoe.tc;
594                         rval = ixgbe_fcoe_setapp(adapter, up);
595
596                         if (rval ||
597                            !(adapter->flags & IXGBE_FLAG_DCB_ENABLED) ||
598                            !(adapter->flags & IXGBE_FLAG_FCOE_ENABLED))
599                                 break;
600
601                         /* The FCoE application priority may be changed multiple
602                          * times in quick succession with switches that build up
603                          * TLVs. To avoid creating uneeded device resets this
604                          * checks the actual HW configuration and clears
605                          * BIT_APP_UPCHG if a HW configuration change is not
606                          * need
607                          */
608                         if (old_tc == adapter->fcoe.tc)
609                                 adapter->dcb_set_bitmap &= ~BIT_APP_UPCHG;
610                         else
611                                 adapter->dcb_set_bitmap |= BIT_APP_UPCHG;
612                 }
613 #endif
614                 break;
615         case DCB_APP_IDTYPE_PORTNUM:
616                 break;
617         default:
618                 break;
619         }
620         return rval;
621 }
622
623 static int ixgbe_dcbnl_ieee_getets(struct net_device *dev,
624                                    struct ieee_ets *ets)
625 {
626         struct ixgbe_adapter *adapter = netdev_priv(dev);
627         struct ieee_ets *my_ets = adapter->ixgbe_ieee_ets;
628
629         /* No IEEE PFC settings available */
630         if (!my_ets)
631                 return -EINVAL;
632
633         ets->ets_cap = MAX_TRAFFIC_CLASS;
634         ets->cbs = my_ets->cbs;
635         memcpy(ets->tc_tx_bw, my_ets->tc_tx_bw, sizeof(ets->tc_tx_bw));
636         memcpy(ets->tc_rx_bw, my_ets->tc_rx_bw, sizeof(ets->tc_rx_bw));
637         memcpy(ets->tc_tsa, my_ets->tc_tsa, sizeof(ets->tc_tsa));
638         memcpy(ets->prio_tc, my_ets->prio_tc, sizeof(ets->prio_tc));
639         return 0;
640 }
641
642 static int ixgbe_dcbnl_ieee_setets(struct net_device *dev,
643                                    struct ieee_ets *ets)
644 {
645         struct ixgbe_adapter *adapter = netdev_priv(dev);
646         __u16 refill[IEEE_8021QAZ_MAX_TCS], max[IEEE_8021QAZ_MAX_TCS];
647         __u8 prio_type[IEEE_8021QAZ_MAX_TCS];
648         int max_frame = dev->mtu + ETH_HLEN + ETH_FCS_LEN;
649         int i, err;
650         __u64 *p = (__u64 *) ets->prio_tc;
651         /* naively give each TC a bwg to map onto CEE hardware */
652         __u8 bwg_id[IEEE_8021QAZ_MAX_TCS] = {0, 1, 2, 3, 4, 5, 6, 7};
653
654         if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
655                 return -EINVAL;
656
657         if (!adapter->ixgbe_ieee_ets) {
658                 adapter->ixgbe_ieee_ets = kmalloc(sizeof(struct ieee_ets),
659                                                   GFP_KERNEL);
660                 if (!adapter->ixgbe_ieee_ets)
661                         return -ENOMEM;
662         }
663
664         memcpy(adapter->ixgbe_ieee_ets, ets, sizeof(*adapter->ixgbe_ieee_ets));
665
666         /* Map TSA onto CEE prio type */
667         for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
668                 switch (ets->tc_tsa[i]) {
669                 case IEEE_8021QAZ_TSA_STRICT:
670                         prio_type[i] = 2;
671                         break;
672                 case IEEE_8021QAZ_TSA_ETS:
673                         prio_type[i] = 0;
674                         break;
675                 default:
676                         /* Hardware only supports priority strict or
677                          * ETS transmission selection algorithms if
678                          * we receive some other value from dcbnl
679                          * throw an error
680                          */
681                         return -EINVAL;
682                 }
683         }
684
685         if (*p)
686                 ixgbe_dcbnl_set_state(dev, 1);
687         else
688                 ixgbe_dcbnl_set_state(dev, 0);
689
690         ixgbe_ieee_credits(ets->tc_tx_bw, refill, max, max_frame);
691         err = ixgbe_dcb_hw_ets_config(&adapter->hw, refill, max,
692                                       bwg_id, prio_type, ets->prio_tc);
693         return err;
694 }
695
696 static int ixgbe_dcbnl_ieee_getpfc(struct net_device *dev,
697                                    struct ieee_pfc *pfc)
698 {
699         struct ixgbe_adapter *adapter = netdev_priv(dev);
700         struct ieee_pfc *my_pfc = adapter->ixgbe_ieee_pfc;
701         int i;
702
703         /* No IEEE PFC settings available */
704         if (!my_pfc)
705                 return -EINVAL;
706
707         pfc->pfc_cap = MAX_TRAFFIC_CLASS;
708         pfc->pfc_en = my_pfc->pfc_en;
709         pfc->mbc = my_pfc->mbc;
710         pfc->delay = my_pfc->delay;
711
712         for (i = 0; i < MAX_TRAFFIC_CLASS; i++) {
713                 pfc->requests[i] = adapter->stats.pxoffrxc[i];
714                 pfc->indications[i] = adapter->stats.pxofftxc[i];
715         }
716
717         return 0;
718 }
719
720 static int ixgbe_dcbnl_ieee_setpfc(struct net_device *dev,
721                                    struct ieee_pfc *pfc)
722 {
723         struct ixgbe_adapter *adapter = netdev_priv(dev);
724         int err;
725
726         if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
727                 return -EINVAL;
728
729         if (!adapter->ixgbe_ieee_pfc) {
730                 adapter->ixgbe_ieee_pfc = kmalloc(sizeof(struct ieee_pfc),
731                                                   GFP_KERNEL);
732                 if (!adapter->ixgbe_ieee_pfc)
733                         return -ENOMEM;
734         }
735
736         memcpy(adapter->ixgbe_ieee_pfc, pfc, sizeof(*adapter->ixgbe_ieee_pfc));
737         err = ixgbe_dcb_hw_pfc_config(&adapter->hw, pfc->pfc_en);
738         return err;
739 }
740
741 static int ixgbe_dcbnl_ieee_setapp(struct net_device *dev,
742                                    struct dcb_app *app)
743 {
744         struct ixgbe_adapter *adapter = netdev_priv(dev);
745
746         if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
747                 return -EINVAL;
748 #ifdef IXGBE_FCOE
749         if (app->selector == 1 && app->protocol == ETH_P_FCOE) {
750                 if (adapter->fcoe.tc == app->priority)
751                         goto setapp;
752
753                 /* In IEEE mode map up to tc 1:1 */
754                 adapter->fcoe.tc = app->priority;
755                 adapter->fcoe.up = app->priority;
756
757                 /* Force hardware reset required to push FCoE
758                  * setup on {tx|rx}_rings
759                  */
760                 adapter->dcb_set_bitmap |= BIT_APP_UPCHG;
761                 ixgbe_dcbnl_set_all(dev);
762         }
763
764 setapp:
765 #endif
766         dcb_setapp(dev, app);
767         return 0;
768 }
769
770 static u8 ixgbe_dcbnl_getdcbx(struct net_device *dev)
771 {
772         struct ixgbe_adapter *adapter = netdev_priv(dev);
773         return adapter->dcbx_cap;
774 }
775
776 static u8 ixgbe_dcbnl_setdcbx(struct net_device *dev, u8 mode)
777 {
778         struct ixgbe_adapter *adapter = netdev_priv(dev);
779         struct ieee_ets ets = {0};
780         struct ieee_pfc pfc = {0};
781
782         /* no support for LLD_MANAGED modes or CEE+IEEE */
783         if ((mode & DCB_CAP_DCBX_LLD_MANAGED) ||
784             ((mode & DCB_CAP_DCBX_VER_IEEE) && (mode & DCB_CAP_DCBX_VER_CEE)) ||
785             !(mode & DCB_CAP_DCBX_HOST))
786                 return 1;
787
788         if (mode == adapter->dcbx_cap)
789                 return 0;
790
791         adapter->dcbx_cap = mode;
792
793         /* ETS and PFC defaults */
794         ets.ets_cap = 8;
795         pfc.pfc_cap = 8;
796
797         if (mode & DCB_CAP_DCBX_VER_IEEE) {
798                 ixgbe_dcbnl_ieee_setets(dev, &ets);
799                 ixgbe_dcbnl_ieee_setpfc(dev, &pfc);
800         } else if (mode & DCB_CAP_DCBX_VER_CEE) {
801                 adapter->dcb_set_bitmap |= (BIT_PFC & BIT_PG_TX & BIT_PG_RX);
802                 ixgbe_dcbnl_set_all(dev);
803         } else {
804                 /* Drop into single TC mode strict priority as this
805                  * indicates CEE and IEEE versions are disabled
806                  */
807                 ixgbe_dcbnl_ieee_setets(dev, &ets);
808                 ixgbe_dcbnl_ieee_setpfc(dev, &pfc);
809                 ixgbe_dcbnl_set_state(dev, 0);
810         }
811
812         return 0;
813 }
814
815 const struct dcbnl_rtnl_ops dcbnl_ops = {
816         .ieee_getets    = ixgbe_dcbnl_ieee_getets,
817         .ieee_setets    = ixgbe_dcbnl_ieee_setets,
818         .ieee_getpfc    = ixgbe_dcbnl_ieee_getpfc,
819         .ieee_setpfc    = ixgbe_dcbnl_ieee_setpfc,
820         .ieee_setapp    = ixgbe_dcbnl_ieee_setapp,
821         .getstate       = ixgbe_dcbnl_get_state,
822         .setstate       = ixgbe_dcbnl_set_state,
823         .getpermhwaddr  = ixgbe_dcbnl_get_perm_hw_addr,
824         .setpgtccfgtx   = ixgbe_dcbnl_set_pg_tc_cfg_tx,
825         .setpgbwgcfgtx  = ixgbe_dcbnl_set_pg_bwg_cfg_tx,
826         .setpgtccfgrx   = ixgbe_dcbnl_set_pg_tc_cfg_rx,
827         .setpgbwgcfgrx  = ixgbe_dcbnl_set_pg_bwg_cfg_rx,
828         .getpgtccfgtx   = ixgbe_dcbnl_get_pg_tc_cfg_tx,
829         .getpgbwgcfgtx  = ixgbe_dcbnl_get_pg_bwg_cfg_tx,
830         .getpgtccfgrx   = ixgbe_dcbnl_get_pg_tc_cfg_rx,
831         .getpgbwgcfgrx  = ixgbe_dcbnl_get_pg_bwg_cfg_rx,
832         .setpfccfg      = ixgbe_dcbnl_set_pfc_cfg,
833         .getpfccfg      = ixgbe_dcbnl_get_pfc_cfg,
834         .setall         = ixgbe_dcbnl_set_all,
835         .getcap         = ixgbe_dcbnl_getcap,
836         .getnumtcs      = ixgbe_dcbnl_getnumtcs,
837         .setnumtcs      = ixgbe_dcbnl_setnumtcs,
838         .getpfcstate    = ixgbe_dcbnl_getpfcstate,
839         .setpfcstate    = ixgbe_dcbnl_setpfcstate,
840         .getapp         = ixgbe_dcbnl_getapp,
841         .setapp         = ixgbe_dcbnl_setapp,
842         .getdcbx        = ixgbe_dcbnl_getdcbx,
843         .setdcbx        = ixgbe_dcbnl_setdcbx,
844 };