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ixgbe: dcb: BIT_APP_UPCHG not set by ixgbe_copy_dcb_cfg()
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / net / ethernet / intel / ixgbe / ixgbe_dcb_nl.c
1 /*******************************************************************************
2
3 Intel 10 Gigabit PCI Express Linux driver
4 Copyright(c) 1999 - 2012 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 static int ixgbe_copy_dcb_cfg(struct ixgbe_adapter *adapter, int tc_max)
48 {
49 struct ixgbe_dcb_config *scfg = &adapter->temp_dcb_cfg;
50 struct ixgbe_dcb_config *dcfg = &adapter->dcb_cfg;
51 struct tc_configuration *src = NULL;
52 struct tc_configuration *dst = NULL;
53 int i, j;
54 int tx = DCB_TX_CONFIG;
55 int rx = DCB_RX_CONFIG;
56 int changes = 0;
57 #ifdef IXGBE_FCOE
58 struct dcb_app app = {
59 .selector = DCB_APP_IDTYPE_ETHTYPE,
60 .protocol = ETH_P_FCOE,
61 };
62 u8 up = dcb_getapp(adapter->netdev, &app);
63
64 if (up && !(up & (1 << adapter->fcoe.up)))
65 changes |= BIT_APP_UPCHG;
66 #endif
67
68 for (i = DCB_PG_ATTR_TC_0; i < tc_max + DCB_PG_ATTR_TC_0; i++) {
69 src = &scfg->tc_config[i - DCB_PG_ATTR_TC_0];
70 dst = &dcfg->tc_config[i - DCB_PG_ATTR_TC_0];
71
72 if (dst->path[tx].prio_type != src->path[tx].prio_type) {
73 dst->path[tx].prio_type = src->path[tx].prio_type;
74 changes |= BIT_PG_TX;
75 }
76
77 if (dst->path[tx].bwg_id != src->path[tx].bwg_id) {
78 dst->path[tx].bwg_id = src->path[tx].bwg_id;
79 changes |= BIT_PG_TX;
80 }
81
82 if (dst->path[tx].bwg_percent != src->path[tx].bwg_percent) {
83 dst->path[tx].bwg_percent = src->path[tx].bwg_percent;
84 changes |= BIT_PG_TX;
85 }
86
87 if (dst->path[tx].up_to_tc_bitmap !=
88 src->path[tx].up_to_tc_bitmap) {
89 dst->path[tx].up_to_tc_bitmap =
90 src->path[tx].up_to_tc_bitmap;
91 changes |= (BIT_PG_TX | BIT_PFC | BIT_APP_UPCHG);
92 }
93
94 if (dst->path[rx].prio_type != src->path[rx].prio_type) {
95 dst->path[rx].prio_type = src->path[rx].prio_type;
96 changes |= BIT_PG_RX;
97 }
98
99 if (dst->path[rx].bwg_id != src->path[rx].bwg_id) {
100 dst->path[rx].bwg_id = src->path[rx].bwg_id;
101 changes |= BIT_PG_RX;
102 }
103
104 if (dst->path[rx].bwg_percent != src->path[rx].bwg_percent) {
105 dst->path[rx].bwg_percent = src->path[rx].bwg_percent;
106 changes |= BIT_PG_RX;
107 }
108
109 if (dst->path[rx].up_to_tc_bitmap !=
110 src->path[rx].up_to_tc_bitmap) {
111 dst->path[rx].up_to_tc_bitmap =
112 src->path[rx].up_to_tc_bitmap;
113 changes |= (BIT_PG_RX | BIT_PFC | BIT_APP_UPCHG);
114 }
115 }
116
117 for (i = DCB_PG_ATTR_BW_ID_0; i < DCB_PG_ATTR_BW_ID_MAX; i++) {
118 j = i - DCB_PG_ATTR_BW_ID_0;
119 if (dcfg->bw_percentage[tx][j] != scfg->bw_percentage[tx][j]) {
120 dcfg->bw_percentage[tx][j] = scfg->bw_percentage[tx][j];
121 changes |= BIT_PG_TX;
122 }
123 if (dcfg->bw_percentage[rx][j] != scfg->bw_percentage[rx][j]) {
124 dcfg->bw_percentage[rx][j] = scfg->bw_percentage[rx][j];
125 changes |= BIT_PG_RX;
126 }
127 }
128
129 for (i = DCB_PFC_UP_ATTR_0; i < DCB_PFC_UP_ATTR_MAX; i++) {
130 j = i - DCB_PFC_UP_ATTR_0;
131 if (dcfg->tc_config[j].dcb_pfc != scfg->tc_config[j].dcb_pfc) {
132 dcfg->tc_config[j].dcb_pfc = scfg->tc_config[j].dcb_pfc;
133 changes |= BIT_PFC;
134 }
135 }
136
137 if (dcfg->pfc_mode_enable != scfg->pfc_mode_enable) {
138 dcfg->pfc_mode_enable = scfg->pfc_mode_enable;
139 changes |= BIT_PFC;
140 }
141
142 return changes;
143 }
144
145 static u8 ixgbe_dcbnl_get_state(struct net_device *netdev)
146 {
147 struct ixgbe_adapter *adapter = netdev_priv(netdev);
148
149 return !!(adapter->flags & IXGBE_FLAG_DCB_ENABLED);
150 }
151
152 static u8 ixgbe_dcbnl_set_state(struct net_device *netdev, u8 state)
153 {
154 int err = 0;
155 u8 prio_tc[MAX_USER_PRIORITY] = {0};
156 int i;
157 struct ixgbe_adapter *adapter = netdev_priv(netdev);
158
159 /* Fail command if not in CEE mode */
160 if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE))
161 return 1;
162
163 /* verify there is something to do, if not then exit */
164 if (!!state != !(adapter->flags & IXGBE_FLAG_DCB_ENABLED))
165 goto out;
166
167 if (state > 0) {
168 err = ixgbe_setup_tc(netdev, adapter->dcb_cfg.num_tcs.pg_tcs);
169 ixgbe_dcb_unpack_map(&adapter->dcb_cfg, DCB_TX_CONFIG, prio_tc);
170 } else {
171 err = ixgbe_setup_tc(netdev, 0);
172 }
173
174 if (err)
175 goto out;
176
177 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
178 netdev_set_prio_tc_map(netdev, i, prio_tc[i]);
179
180 out:
181 return err ? 1 : 0;
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
224 static void ixgbe_dcbnl_set_pg_bwg_cfg_tx(struct net_device *netdev, int bwg_id,
225 u8 bw_pct)
226 {
227 struct ixgbe_adapter *adapter = netdev_priv(netdev);
228
229 adapter->temp_dcb_cfg.bw_percentage[0][bwg_id] = bw_pct;
230 }
231
232 static void ixgbe_dcbnl_set_pg_tc_cfg_rx(struct net_device *netdev, int tc,
233 u8 prio, u8 bwg_id, u8 bw_pct,
234 u8 up_map)
235 {
236 struct ixgbe_adapter *adapter = netdev_priv(netdev);
237
238 if (prio != DCB_ATTR_VALUE_UNDEFINED)
239 adapter->temp_dcb_cfg.tc_config[tc].path[1].prio_type = prio;
240 if (bwg_id != DCB_ATTR_VALUE_UNDEFINED)
241 adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_id = bwg_id;
242 if (bw_pct != DCB_ATTR_VALUE_UNDEFINED)
243 adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_percent =
244 bw_pct;
245 if (up_map != DCB_ATTR_VALUE_UNDEFINED)
246 adapter->temp_dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap =
247 up_map;
248 }
249
250 static void ixgbe_dcbnl_set_pg_bwg_cfg_rx(struct net_device *netdev, int bwg_id,
251 u8 bw_pct)
252 {
253 struct ixgbe_adapter *adapter = netdev_priv(netdev);
254
255 adapter->temp_dcb_cfg.bw_percentage[1][bwg_id] = bw_pct;
256 }
257
258 static void ixgbe_dcbnl_get_pg_tc_cfg_tx(struct net_device *netdev, int tc,
259 u8 *prio, u8 *bwg_id, u8 *bw_pct,
260 u8 *up_map)
261 {
262 struct ixgbe_adapter *adapter = netdev_priv(netdev);
263
264 *prio = adapter->dcb_cfg.tc_config[tc].path[0].prio_type;
265 *bwg_id = adapter->dcb_cfg.tc_config[tc].path[0].bwg_id;
266 *bw_pct = adapter->dcb_cfg.tc_config[tc].path[0].bwg_percent;
267 *up_map = adapter->dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap;
268 }
269
270 static void ixgbe_dcbnl_get_pg_bwg_cfg_tx(struct net_device *netdev, int bwg_id,
271 u8 *bw_pct)
272 {
273 struct ixgbe_adapter *adapter = netdev_priv(netdev);
274
275 *bw_pct = adapter->dcb_cfg.bw_percentage[0][bwg_id];
276 }
277
278 static void ixgbe_dcbnl_get_pg_tc_cfg_rx(struct net_device *netdev, int tc,
279 u8 *prio, u8 *bwg_id, u8 *bw_pct,
280 u8 *up_map)
281 {
282 struct ixgbe_adapter *adapter = netdev_priv(netdev);
283
284 *prio = adapter->dcb_cfg.tc_config[tc].path[1].prio_type;
285 *bwg_id = adapter->dcb_cfg.tc_config[tc].path[1].bwg_id;
286 *bw_pct = adapter->dcb_cfg.tc_config[tc].path[1].bwg_percent;
287 *up_map = adapter->dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap;
288 }
289
290 static void ixgbe_dcbnl_get_pg_bwg_cfg_rx(struct net_device *netdev, int bwg_id,
291 u8 *bw_pct)
292 {
293 struct ixgbe_adapter *adapter = netdev_priv(netdev);
294
295 *bw_pct = adapter->dcb_cfg.bw_percentage[1][bwg_id];
296 }
297
298 static void ixgbe_dcbnl_set_pfc_cfg(struct net_device *netdev, int priority,
299 u8 setting)
300 {
301 struct ixgbe_adapter *adapter = netdev_priv(netdev);
302
303 adapter->temp_dcb_cfg.tc_config[priority].dcb_pfc = setting;
304 if (adapter->temp_dcb_cfg.tc_config[priority].dcb_pfc !=
305 adapter->dcb_cfg.tc_config[priority].dcb_pfc)
306 adapter->temp_dcb_cfg.pfc_mode_enable = true;
307 }
308
309 static void ixgbe_dcbnl_get_pfc_cfg(struct net_device *netdev, int priority,
310 u8 *setting)
311 {
312 struct ixgbe_adapter *adapter = netdev_priv(netdev);
313
314 *setting = adapter->dcb_cfg.tc_config[priority].dcb_pfc;
315 }
316
317 #ifdef IXGBE_FCOE
318 static void ixgbe_dcbnl_devreset(struct net_device *dev)
319 {
320 struct ixgbe_adapter *adapter = netdev_priv(dev);
321
322 while (test_and_set_bit(__IXGBE_RESETTING, &adapter->state))
323 usleep_range(1000, 2000);
324
325 if (netif_running(dev))
326 dev->netdev_ops->ndo_stop(dev);
327
328 ixgbe_clear_interrupt_scheme(adapter);
329 ixgbe_init_interrupt_scheme(adapter);
330
331 if (netif_running(dev))
332 dev->netdev_ops->ndo_open(dev);
333
334 clear_bit(__IXGBE_RESETTING, &adapter->state);
335 }
336 #endif
337
338 static u8 ixgbe_dcbnl_set_all(struct net_device *netdev)
339 {
340 struct ixgbe_adapter *adapter = netdev_priv(netdev);
341 int ret = DCB_NO_HW_CHG;
342 int i;
343
344 /* Fail command if not in CEE mode */
345 if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE))
346 return ret;
347
348 adapter->dcb_set_bitmap |= ixgbe_copy_dcb_cfg(adapter,
349 MAX_TRAFFIC_CLASS);
350 if (!adapter->dcb_set_bitmap)
351 return ret;
352
353 if (adapter->dcb_cfg.pfc_mode_enable) {
354 switch (adapter->hw.mac.type) {
355 case ixgbe_mac_82599EB:
356 case ixgbe_mac_X540:
357 if (adapter->hw.fc.current_mode != ixgbe_fc_pfc)
358 adapter->last_lfc_mode =
359 adapter->hw.fc.current_mode;
360 break;
361 default:
362 break;
363 }
364 adapter->hw.fc.requested_mode = ixgbe_fc_pfc;
365 } else {
366 switch (adapter->hw.mac.type) {
367 case ixgbe_mac_82598EB:
368 adapter->hw.fc.requested_mode = ixgbe_fc_none;
369 break;
370 case ixgbe_mac_82599EB:
371 case ixgbe_mac_X540:
372 adapter->hw.fc.requested_mode = adapter->last_lfc_mode;
373 break;
374 default:
375 break;
376 }
377 }
378
379 if (adapter->dcb_set_bitmap & (BIT_PG_TX|BIT_PG_RX)) {
380 u16 refill[MAX_TRAFFIC_CLASS], max[MAX_TRAFFIC_CLASS];
381 u8 bwg_id[MAX_TRAFFIC_CLASS], prio_type[MAX_TRAFFIC_CLASS];
382 /* Priority to TC mapping in CEE case default to 1:1 */
383 u8 prio_tc[MAX_USER_PRIORITY];
384 int max_frame = adapter->netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
385
386 #ifdef IXGBE_FCOE
387 if (adapter->netdev->features & NETIF_F_FCOE_MTU)
388 max_frame = max(max_frame, IXGBE_FCOE_JUMBO_FRAME_SIZE);
389 #endif
390
391 ixgbe_dcb_calculate_tc_credits(&adapter->hw, &adapter->dcb_cfg,
392 max_frame, DCB_TX_CONFIG);
393 ixgbe_dcb_calculate_tc_credits(&adapter->hw, &adapter->dcb_cfg,
394 max_frame, DCB_RX_CONFIG);
395
396 ixgbe_dcb_unpack_refill(&adapter->dcb_cfg,
397 DCB_TX_CONFIG, refill);
398 ixgbe_dcb_unpack_max(&adapter->dcb_cfg, max);
399 ixgbe_dcb_unpack_bwgid(&adapter->dcb_cfg,
400 DCB_TX_CONFIG, bwg_id);
401 ixgbe_dcb_unpack_prio(&adapter->dcb_cfg,
402 DCB_TX_CONFIG, prio_type);
403 ixgbe_dcb_unpack_map(&adapter->dcb_cfg,
404 DCB_TX_CONFIG, prio_tc);
405
406 ixgbe_dcb_hw_ets_config(&adapter->hw, refill, max,
407 bwg_id, prio_type, prio_tc);
408
409 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
410 netdev_set_prio_tc_map(netdev, i, prio_tc[i]);
411
412 ret = DCB_HW_CHG_RST;
413 }
414
415 if (adapter->dcb_set_bitmap & BIT_PFC) {
416 u8 pfc_en;
417 u8 prio_tc[MAX_USER_PRIORITY];
418
419 ixgbe_dcb_unpack_map(&adapter->dcb_cfg,
420 DCB_TX_CONFIG, prio_tc);
421 ixgbe_dcb_unpack_pfc(&adapter->dcb_cfg, &pfc_en);
422 ixgbe_dcb_hw_pfc_config(&adapter->hw, pfc_en, prio_tc);
423 if (ret != DCB_HW_CHG_RST)
424 ret = DCB_HW_CHG;
425 }
426
427 if (adapter->dcb_cfg.pfc_mode_enable)
428 adapter->hw.fc.current_mode = ixgbe_fc_pfc;
429
430 #ifdef IXGBE_FCOE
431 /* Reprogam FCoE hardware offloads when the traffic class
432 * FCoE is using changes. This happens if the APP info
433 * changes or the up2tc mapping is updated.
434 */
435 if (adapter->dcb_set_bitmap & BIT_APP_UPCHG) {
436 struct dcb_app app = {
437 .selector = DCB_APP_IDTYPE_ETHTYPE,
438 .protocol = ETH_P_FCOE,
439 };
440 u8 up = dcb_getapp(netdev, &app);
441
442 adapter->fcoe.up = ffs(up) - 1;
443 ixgbe_dcbnl_devreset(netdev);
444 ret = DCB_HW_CHG_RST;
445 }
446 #endif
447
448 adapter->dcb_set_bitmap = 0x00;
449 return ret;
450 }
451
452 static u8 ixgbe_dcbnl_getcap(struct net_device *netdev, int capid, u8 *cap)
453 {
454 struct ixgbe_adapter *adapter = netdev_priv(netdev);
455
456 switch (capid) {
457 case DCB_CAP_ATTR_PG:
458 *cap = true;
459 break;
460 case DCB_CAP_ATTR_PFC:
461 *cap = true;
462 break;
463 case DCB_CAP_ATTR_UP2TC:
464 *cap = false;
465 break;
466 case DCB_CAP_ATTR_PG_TCS:
467 *cap = 0x80;
468 break;
469 case DCB_CAP_ATTR_PFC_TCS:
470 *cap = 0x80;
471 break;
472 case DCB_CAP_ATTR_GSP:
473 *cap = true;
474 break;
475 case DCB_CAP_ATTR_BCN:
476 *cap = false;
477 break;
478 case DCB_CAP_ATTR_DCBX:
479 *cap = adapter->dcbx_cap;
480 break;
481 default:
482 *cap = false;
483 break;
484 }
485
486 return 0;
487 }
488
489 static int ixgbe_dcbnl_getnumtcs(struct net_device *netdev, int tcid, u8 *num)
490 {
491 struct ixgbe_adapter *adapter = netdev_priv(netdev);
492 u8 rval = 0;
493
494 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
495 switch (tcid) {
496 case DCB_NUMTCS_ATTR_PG:
497 *num = adapter->dcb_cfg.num_tcs.pg_tcs;
498 break;
499 case DCB_NUMTCS_ATTR_PFC:
500 *num = adapter->dcb_cfg.num_tcs.pfc_tcs;
501 break;
502 default:
503 rval = -EINVAL;
504 break;
505 }
506 } else {
507 rval = -EINVAL;
508 }
509
510 return rval;
511 }
512
513 static int ixgbe_dcbnl_setnumtcs(struct net_device *netdev, int tcid, u8 num)
514 {
515 return -EINVAL;
516 }
517
518 static u8 ixgbe_dcbnl_getpfcstate(struct net_device *netdev)
519 {
520 struct ixgbe_adapter *adapter = netdev_priv(netdev);
521
522 return adapter->dcb_cfg.pfc_mode_enable;
523 }
524
525 static void ixgbe_dcbnl_setpfcstate(struct net_device *netdev, u8 state)
526 {
527 struct ixgbe_adapter *adapter = netdev_priv(netdev);
528
529 adapter->temp_dcb_cfg.pfc_mode_enable = state;
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 static int ixgbe_dcbnl_ieee_getets(struct net_device *dev,
557 struct ieee_ets *ets)
558 {
559 struct ixgbe_adapter *adapter = netdev_priv(dev);
560 struct ieee_ets *my_ets = adapter->ixgbe_ieee_ets;
561
562 ets->ets_cap = adapter->dcb_cfg.num_tcs.pg_tcs;
563
564 /* No IEEE PFC settings available */
565 if (!my_ets)
566 return 0;
567
568 ets->cbs = my_ets->cbs;
569 memcpy(ets->tc_tx_bw, my_ets->tc_tx_bw, sizeof(ets->tc_tx_bw));
570 memcpy(ets->tc_rx_bw, my_ets->tc_rx_bw, sizeof(ets->tc_rx_bw));
571 memcpy(ets->tc_tsa, my_ets->tc_tsa, sizeof(ets->tc_tsa));
572 memcpy(ets->prio_tc, my_ets->prio_tc, sizeof(ets->prio_tc));
573 return 0;
574 }
575
576 static int ixgbe_dcbnl_ieee_setets(struct net_device *dev,
577 struct ieee_ets *ets)
578 {
579 struct ixgbe_adapter *adapter = netdev_priv(dev);
580 int max_frame = dev->mtu + ETH_HLEN + ETH_FCS_LEN;
581 int i, err = 0;
582 __u8 max_tc = 0;
583
584 if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
585 return -EINVAL;
586
587 if (!adapter->ixgbe_ieee_ets) {
588 adapter->ixgbe_ieee_ets = kmalloc(sizeof(struct ieee_ets),
589 GFP_KERNEL);
590 if (!adapter->ixgbe_ieee_ets)
591 return -ENOMEM;
592 }
593
594 memcpy(adapter->ixgbe_ieee_ets, ets, sizeof(*adapter->ixgbe_ieee_ets));
595
596 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
597 if (ets->prio_tc[i] > max_tc)
598 max_tc = ets->prio_tc[i];
599 }
600
601 if (max_tc)
602 max_tc++;
603
604 if (max_tc > adapter->dcb_cfg.num_tcs.pg_tcs)
605 return -EINVAL;
606
607 if (max_tc != netdev_get_num_tc(dev))
608 err = ixgbe_setup_tc(dev, max_tc);
609
610 if (err)
611 goto err_out;
612
613 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
614 netdev_set_prio_tc_map(dev, i, ets->prio_tc[i]);
615
616 err = ixgbe_dcb_hw_ets(&adapter->hw, ets, max_frame);
617 err_out:
618 return err;
619 }
620
621 static int ixgbe_dcbnl_ieee_getpfc(struct net_device *dev,
622 struct ieee_pfc *pfc)
623 {
624 struct ixgbe_adapter *adapter = netdev_priv(dev);
625 struct ieee_pfc *my_pfc = adapter->ixgbe_ieee_pfc;
626 int i;
627
628 pfc->pfc_cap = adapter->dcb_cfg.num_tcs.pfc_tcs;
629
630 /* No IEEE PFC settings available */
631 if (!my_pfc)
632 return 0;
633
634 pfc->pfc_en = my_pfc->pfc_en;
635 pfc->mbc = my_pfc->mbc;
636 pfc->delay = my_pfc->delay;
637
638 for (i = 0; i < MAX_TRAFFIC_CLASS; i++) {
639 pfc->requests[i] = adapter->stats.pxoffrxc[i];
640 pfc->indications[i] = adapter->stats.pxofftxc[i];
641 }
642
643 return 0;
644 }
645
646 static int ixgbe_dcbnl_ieee_setpfc(struct net_device *dev,
647 struct ieee_pfc *pfc)
648 {
649 struct ixgbe_adapter *adapter = netdev_priv(dev);
650 u8 *prio_tc;
651
652 if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
653 return -EINVAL;
654
655 if (!adapter->ixgbe_ieee_pfc) {
656 adapter->ixgbe_ieee_pfc = kmalloc(sizeof(struct ieee_pfc),
657 GFP_KERNEL);
658 if (!adapter->ixgbe_ieee_pfc)
659 return -ENOMEM;
660 }
661
662 prio_tc = adapter->ixgbe_ieee_ets->prio_tc;
663 memcpy(adapter->ixgbe_ieee_pfc, pfc, sizeof(*adapter->ixgbe_ieee_pfc));
664 return ixgbe_dcb_hw_pfc_config(&adapter->hw, pfc->pfc_en, prio_tc);
665 }
666
667 static int ixgbe_dcbnl_ieee_setapp(struct net_device *dev,
668 struct dcb_app *app)
669 {
670 struct ixgbe_adapter *adapter = netdev_priv(dev);
671 int err = -EINVAL;
672
673 if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
674 return err;
675
676 err = dcb_ieee_setapp(dev, app);
677
678 #ifdef IXGBE_FCOE
679 if (!err && app->selector == IEEE_8021QAZ_APP_SEL_ETHERTYPE &&
680 app->protocol == ETH_P_FCOE) {
681 u8 app_mask = dcb_ieee_getapp_mask(dev, app);
682
683 if (app_mask & (1 << adapter->fcoe.up))
684 return err;
685
686 adapter->fcoe.up = app->priority;
687 ixgbe_dcbnl_devreset(dev);
688 }
689 #endif
690 return 0;
691 }
692
693 static int ixgbe_dcbnl_ieee_delapp(struct net_device *dev,
694 struct dcb_app *app)
695 {
696 struct ixgbe_adapter *adapter = netdev_priv(dev);
697 int err;
698
699 if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
700 return -EINVAL;
701
702 err = dcb_ieee_delapp(dev, app);
703
704 #ifdef IXGBE_FCOE
705 if (!err && app->selector == IEEE_8021QAZ_APP_SEL_ETHERTYPE &&
706 app->protocol == ETH_P_FCOE) {
707 u8 app_mask = dcb_ieee_getapp_mask(dev, app);
708
709 if (app_mask & (1 << adapter->fcoe.up))
710 return err;
711
712 adapter->fcoe.up = app_mask ?
713 ffs(app_mask) - 1 : IXGBE_FCOE_DEFTC;
714 ixgbe_dcbnl_devreset(dev);
715 }
716 #endif
717 return err;
718 }
719
720 static u8 ixgbe_dcbnl_getdcbx(struct net_device *dev)
721 {
722 struct ixgbe_adapter *adapter = netdev_priv(dev);
723 return adapter->dcbx_cap;
724 }
725
726 static u8 ixgbe_dcbnl_setdcbx(struct net_device *dev, u8 mode)
727 {
728 struct ixgbe_adapter *adapter = netdev_priv(dev);
729 struct ieee_ets ets = {0};
730 struct ieee_pfc pfc = {0};
731 int err = 0;
732
733 /* no support for LLD_MANAGED modes or CEE+IEEE */
734 if ((mode & DCB_CAP_DCBX_LLD_MANAGED) ||
735 ((mode & DCB_CAP_DCBX_VER_IEEE) && (mode & DCB_CAP_DCBX_VER_CEE)) ||
736 !(mode & DCB_CAP_DCBX_HOST))
737 return 1;
738
739 if (mode == adapter->dcbx_cap)
740 return 0;
741
742 adapter->dcbx_cap = mode;
743
744 /* ETS and PFC defaults */
745 ets.ets_cap = 8;
746 pfc.pfc_cap = 8;
747
748 if (mode & DCB_CAP_DCBX_VER_IEEE) {
749 ixgbe_dcbnl_ieee_setets(dev, &ets);
750 ixgbe_dcbnl_ieee_setpfc(dev, &pfc);
751 } else if (mode & DCB_CAP_DCBX_VER_CEE) {
752 u8 mask = BIT_PFC | BIT_PG_TX | BIT_PG_RX | BIT_APP_UPCHG;
753
754 adapter->dcb_set_bitmap |= mask;
755 ixgbe_dcbnl_set_all(dev);
756 } else {
757 /* Drop into single TC mode strict priority as this
758 * indicates CEE and IEEE versions are disabled
759 */
760 ixgbe_dcbnl_ieee_setets(dev, &ets);
761 ixgbe_dcbnl_ieee_setpfc(dev, &pfc);
762 err = ixgbe_setup_tc(dev, 0);
763 }
764
765 return err ? 1 : 0;
766 }
767
768 const struct dcbnl_rtnl_ops dcbnl_ops = {
769 .ieee_getets = ixgbe_dcbnl_ieee_getets,
770 .ieee_setets = ixgbe_dcbnl_ieee_setets,
771 .ieee_getpfc = ixgbe_dcbnl_ieee_getpfc,
772 .ieee_setpfc = ixgbe_dcbnl_ieee_setpfc,
773 .ieee_setapp = ixgbe_dcbnl_ieee_setapp,
774 .ieee_delapp = ixgbe_dcbnl_ieee_delapp,
775 .getstate = ixgbe_dcbnl_get_state,
776 .setstate = ixgbe_dcbnl_set_state,
777 .getpermhwaddr = ixgbe_dcbnl_get_perm_hw_addr,
778 .setpgtccfgtx = ixgbe_dcbnl_set_pg_tc_cfg_tx,
779 .setpgbwgcfgtx = ixgbe_dcbnl_set_pg_bwg_cfg_tx,
780 .setpgtccfgrx = ixgbe_dcbnl_set_pg_tc_cfg_rx,
781 .setpgbwgcfgrx = ixgbe_dcbnl_set_pg_bwg_cfg_rx,
782 .getpgtccfgtx = ixgbe_dcbnl_get_pg_tc_cfg_tx,
783 .getpgbwgcfgtx = ixgbe_dcbnl_get_pg_bwg_cfg_tx,
784 .getpgtccfgrx = ixgbe_dcbnl_get_pg_tc_cfg_rx,
785 .getpgbwgcfgrx = ixgbe_dcbnl_get_pg_bwg_cfg_rx,
786 .setpfccfg = ixgbe_dcbnl_set_pfc_cfg,
787 .getpfccfg = ixgbe_dcbnl_get_pfc_cfg,
788 .setall = ixgbe_dcbnl_set_all,
789 .getcap = ixgbe_dcbnl_getcap,
790 .getnumtcs = ixgbe_dcbnl_getnumtcs,
791 .setnumtcs = ixgbe_dcbnl_setnumtcs,
792 .getpfcstate = ixgbe_dcbnl_getpfcstate,
793 .setpfcstate = ixgbe_dcbnl_setpfcstate,
794 .getapp = ixgbe_dcbnl_getapp,
795 .getdcbx = ixgbe_dcbnl_getdcbx,
796 .setdcbx = ixgbe_dcbnl_setdcbx,
797 };
kernel source for telekom puls (alcatel/mediatek)