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Merge tag 'dt2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
[deliverable/linux.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 struct ixgbe_dcb_config *dcb_cfg = &adapter->dcb_cfg;
342 struct ixgbe_hw *hw = &adapter->hw;
343 int ret = DCB_NO_HW_CHG;
344 int i;
345
346 /* Fail command if not in CEE mode */
347 if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE))
348 return ret;
349
350 adapter->dcb_set_bitmap |= ixgbe_copy_dcb_cfg(adapter,
351 MAX_TRAFFIC_CLASS);
352 if (!adapter->dcb_set_bitmap)
353 return ret;
354
355 if (adapter->dcb_set_bitmap & (BIT_PG_TX|BIT_PG_RX)) {
356 u16 refill[MAX_TRAFFIC_CLASS], max[MAX_TRAFFIC_CLASS];
357 u8 bwg_id[MAX_TRAFFIC_CLASS], prio_type[MAX_TRAFFIC_CLASS];
358 /* Priority to TC mapping in CEE case default to 1:1 */
359 u8 prio_tc[MAX_USER_PRIORITY];
360 int max_frame = adapter->netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
361
362 #ifdef IXGBE_FCOE
363 if (adapter->netdev->features & NETIF_F_FCOE_MTU)
364 max_frame = max(max_frame, IXGBE_FCOE_JUMBO_FRAME_SIZE);
365 #endif
366
367 ixgbe_dcb_calculate_tc_credits(hw, dcb_cfg, max_frame,
368 DCB_TX_CONFIG);
369 ixgbe_dcb_calculate_tc_credits(hw, dcb_cfg, max_frame,
370 DCB_RX_CONFIG);
371
372 ixgbe_dcb_unpack_refill(dcb_cfg, DCB_TX_CONFIG, refill);
373 ixgbe_dcb_unpack_max(dcb_cfg, max);
374 ixgbe_dcb_unpack_bwgid(dcb_cfg, DCB_TX_CONFIG, bwg_id);
375 ixgbe_dcb_unpack_prio(dcb_cfg, DCB_TX_CONFIG, prio_type);
376 ixgbe_dcb_unpack_map(dcb_cfg, DCB_TX_CONFIG, prio_tc);
377
378 ixgbe_dcb_hw_ets_config(hw, refill, max, bwg_id,
379 prio_type, prio_tc);
380
381 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
382 netdev_set_prio_tc_map(netdev, i, prio_tc[i]);
383
384 ret = DCB_HW_CHG_RST;
385 }
386
387 if (adapter->dcb_set_bitmap & BIT_PFC) {
388 if (dcb_cfg->pfc_mode_enable) {
389 u8 pfc_en;
390 u8 prio_tc[MAX_USER_PRIORITY];
391
392 ixgbe_dcb_unpack_map(dcb_cfg, DCB_TX_CONFIG, prio_tc);
393 ixgbe_dcb_unpack_pfc(dcb_cfg, &pfc_en);
394 ixgbe_dcb_hw_pfc_config(hw, pfc_en, prio_tc);
395 } else {
396 hw->mac.ops.fc_enable(hw);
397 }
398
399 ixgbe_set_rx_drop_en(adapter);
400
401 ret = DCB_HW_CHG;
402 }
403
404 #ifdef IXGBE_FCOE
405 /* Reprogam FCoE hardware offloads when the traffic class
406 * FCoE is using changes. This happens if the APP info
407 * changes or the up2tc mapping is updated.
408 */
409 if (adapter->dcb_set_bitmap & BIT_APP_UPCHG) {
410 struct dcb_app app = {
411 .selector = DCB_APP_IDTYPE_ETHTYPE,
412 .protocol = ETH_P_FCOE,
413 };
414 u8 up = dcb_getapp(netdev, &app);
415
416 adapter->fcoe.up = ffs(up) - 1;
417 ixgbe_dcbnl_devreset(netdev);
418 ret = DCB_HW_CHG_RST;
419 }
420 #endif
421
422 adapter->dcb_set_bitmap = 0x00;
423 return ret;
424 }
425
426 static u8 ixgbe_dcbnl_getcap(struct net_device *netdev, int capid, u8 *cap)
427 {
428 struct ixgbe_adapter *adapter = netdev_priv(netdev);
429
430 switch (capid) {
431 case DCB_CAP_ATTR_PG:
432 *cap = true;
433 break;
434 case DCB_CAP_ATTR_PFC:
435 *cap = true;
436 break;
437 case DCB_CAP_ATTR_UP2TC:
438 *cap = false;
439 break;
440 case DCB_CAP_ATTR_PG_TCS:
441 *cap = 0x80;
442 break;
443 case DCB_CAP_ATTR_PFC_TCS:
444 *cap = 0x80;
445 break;
446 case DCB_CAP_ATTR_GSP:
447 *cap = true;
448 break;
449 case DCB_CAP_ATTR_BCN:
450 *cap = false;
451 break;
452 case DCB_CAP_ATTR_DCBX:
453 *cap = adapter->dcbx_cap;
454 break;
455 default:
456 *cap = false;
457 break;
458 }
459
460 return 0;
461 }
462
463 static int ixgbe_dcbnl_getnumtcs(struct net_device *netdev, int tcid, u8 *num)
464 {
465 struct ixgbe_adapter *adapter = netdev_priv(netdev);
466 u8 rval = 0;
467
468 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
469 switch (tcid) {
470 case DCB_NUMTCS_ATTR_PG:
471 *num = adapter->dcb_cfg.num_tcs.pg_tcs;
472 break;
473 case DCB_NUMTCS_ATTR_PFC:
474 *num = adapter->dcb_cfg.num_tcs.pfc_tcs;
475 break;
476 default:
477 rval = -EINVAL;
478 break;
479 }
480 } else {
481 rval = -EINVAL;
482 }
483
484 return rval;
485 }
486
487 static int ixgbe_dcbnl_setnumtcs(struct net_device *netdev, int tcid, u8 num)
488 {
489 return -EINVAL;
490 }
491
492 static u8 ixgbe_dcbnl_getpfcstate(struct net_device *netdev)
493 {
494 struct ixgbe_adapter *adapter = netdev_priv(netdev);
495
496 return adapter->dcb_cfg.pfc_mode_enable;
497 }
498
499 static void ixgbe_dcbnl_setpfcstate(struct net_device *netdev, u8 state)
500 {
501 struct ixgbe_adapter *adapter = netdev_priv(netdev);
502
503 adapter->temp_dcb_cfg.pfc_mode_enable = state;
504 }
505
506 /**
507 * ixgbe_dcbnl_getapp - retrieve the DCBX application user priority
508 * @netdev : the corresponding netdev
509 * @idtype : identifies the id as ether type or TCP/UDP port number
510 * @id: id is either ether type or TCP/UDP port number
511 *
512 * Returns : on success, returns a non-zero 802.1p user priority bitmap
513 * otherwise returns 0 as the invalid user priority bitmap to indicate an
514 * error.
515 */
516 static u8 ixgbe_dcbnl_getapp(struct net_device *netdev, u8 idtype, u16 id)
517 {
518 struct ixgbe_adapter *adapter = netdev_priv(netdev);
519 struct dcb_app app = {
520 .selector = idtype,
521 .protocol = id,
522 };
523
524 if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE))
525 return 0;
526
527 return dcb_getapp(netdev, &app);
528 }
529
530 static int ixgbe_dcbnl_ieee_getets(struct net_device *dev,
531 struct ieee_ets *ets)
532 {
533 struct ixgbe_adapter *adapter = netdev_priv(dev);
534 struct ieee_ets *my_ets = adapter->ixgbe_ieee_ets;
535
536 ets->ets_cap = adapter->dcb_cfg.num_tcs.pg_tcs;
537
538 /* No IEEE PFC settings available */
539 if (!my_ets)
540 return 0;
541
542 ets->cbs = my_ets->cbs;
543 memcpy(ets->tc_tx_bw, my_ets->tc_tx_bw, sizeof(ets->tc_tx_bw));
544 memcpy(ets->tc_rx_bw, my_ets->tc_rx_bw, sizeof(ets->tc_rx_bw));
545 memcpy(ets->tc_tsa, my_ets->tc_tsa, sizeof(ets->tc_tsa));
546 memcpy(ets->prio_tc, my_ets->prio_tc, sizeof(ets->prio_tc));
547 return 0;
548 }
549
550 static int ixgbe_dcbnl_ieee_setets(struct net_device *dev,
551 struct ieee_ets *ets)
552 {
553 struct ixgbe_adapter *adapter = netdev_priv(dev);
554 int max_frame = dev->mtu + ETH_HLEN + ETH_FCS_LEN;
555 int i, err = 0;
556 __u8 max_tc = 0;
557
558 if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
559 return -EINVAL;
560
561 if (!adapter->ixgbe_ieee_ets) {
562 adapter->ixgbe_ieee_ets = kmalloc(sizeof(struct ieee_ets),
563 GFP_KERNEL);
564 if (!adapter->ixgbe_ieee_ets)
565 return -ENOMEM;
566 }
567
568 memcpy(adapter->ixgbe_ieee_ets, ets, sizeof(*adapter->ixgbe_ieee_ets));
569
570 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
571 if (ets->prio_tc[i] > max_tc)
572 max_tc = ets->prio_tc[i];
573 }
574
575 if (max_tc)
576 max_tc++;
577
578 if (max_tc > adapter->dcb_cfg.num_tcs.pg_tcs)
579 return -EINVAL;
580
581 if (max_tc != netdev_get_num_tc(dev))
582 err = ixgbe_setup_tc(dev, max_tc);
583
584 if (err)
585 goto err_out;
586
587 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
588 netdev_set_prio_tc_map(dev, i, ets->prio_tc[i]);
589
590 err = ixgbe_dcb_hw_ets(&adapter->hw, ets, max_frame);
591 err_out:
592 return err;
593 }
594
595 static int ixgbe_dcbnl_ieee_getpfc(struct net_device *dev,
596 struct ieee_pfc *pfc)
597 {
598 struct ixgbe_adapter *adapter = netdev_priv(dev);
599 struct ieee_pfc *my_pfc = adapter->ixgbe_ieee_pfc;
600 int i;
601
602 pfc->pfc_cap = adapter->dcb_cfg.num_tcs.pfc_tcs;
603
604 /* No IEEE PFC settings available */
605 if (!my_pfc)
606 return 0;
607
608 pfc->pfc_en = my_pfc->pfc_en;
609 pfc->mbc = my_pfc->mbc;
610 pfc->delay = my_pfc->delay;
611
612 for (i = 0; i < MAX_TRAFFIC_CLASS; i++) {
613 pfc->requests[i] = adapter->stats.pxoffrxc[i];
614 pfc->indications[i] = adapter->stats.pxofftxc[i];
615 }
616
617 return 0;
618 }
619
620 static int ixgbe_dcbnl_ieee_setpfc(struct net_device *dev,
621 struct ieee_pfc *pfc)
622 {
623 struct ixgbe_adapter *adapter = netdev_priv(dev);
624 struct ixgbe_hw *hw = &adapter->hw;
625 u8 *prio_tc;
626 int err;
627
628 if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
629 return -EINVAL;
630
631 if (!adapter->ixgbe_ieee_pfc) {
632 adapter->ixgbe_ieee_pfc = kmalloc(sizeof(struct ieee_pfc),
633 GFP_KERNEL);
634 if (!adapter->ixgbe_ieee_pfc)
635 return -ENOMEM;
636 }
637
638 prio_tc = adapter->ixgbe_ieee_ets->prio_tc;
639 memcpy(adapter->ixgbe_ieee_pfc, pfc, sizeof(*adapter->ixgbe_ieee_pfc));
640
641 /* Enable link flow control parameters if PFC is disabled */
642 if (pfc->pfc_en)
643 err = ixgbe_dcb_hw_pfc_config(hw, pfc->pfc_en, prio_tc);
644 else
645 err = hw->mac.ops.fc_enable(hw);
646
647 ixgbe_set_rx_drop_en(adapter);
648
649 return err;
650 }
651
652 static int ixgbe_dcbnl_ieee_setapp(struct net_device *dev,
653 struct dcb_app *app)
654 {
655 struct ixgbe_adapter *adapter = netdev_priv(dev);
656 int err = -EINVAL;
657
658 if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
659 return err;
660
661 err = dcb_ieee_setapp(dev, app);
662
663 #ifdef IXGBE_FCOE
664 if (!err && app->selector == IEEE_8021QAZ_APP_SEL_ETHERTYPE &&
665 app->protocol == ETH_P_FCOE) {
666 u8 app_mask = dcb_ieee_getapp_mask(dev, app);
667
668 if (app_mask & (1 << adapter->fcoe.up))
669 return err;
670
671 adapter->fcoe.up = app->priority;
672 ixgbe_dcbnl_devreset(dev);
673 }
674 #endif
675 return 0;
676 }
677
678 static int ixgbe_dcbnl_ieee_delapp(struct net_device *dev,
679 struct dcb_app *app)
680 {
681 struct ixgbe_adapter *adapter = netdev_priv(dev);
682 int err;
683
684 if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
685 return -EINVAL;
686
687 err = dcb_ieee_delapp(dev, app);
688
689 #ifdef IXGBE_FCOE
690 if (!err && app->selector == IEEE_8021QAZ_APP_SEL_ETHERTYPE &&
691 app->protocol == ETH_P_FCOE) {
692 u8 app_mask = dcb_ieee_getapp_mask(dev, app);
693
694 if (app_mask & (1 << adapter->fcoe.up))
695 return err;
696
697 adapter->fcoe.up = app_mask ?
698 ffs(app_mask) - 1 : IXGBE_FCOE_DEFTC;
699 ixgbe_dcbnl_devreset(dev);
700 }
701 #endif
702 return err;
703 }
704
705 static u8 ixgbe_dcbnl_getdcbx(struct net_device *dev)
706 {
707 struct ixgbe_adapter *adapter = netdev_priv(dev);
708 return adapter->dcbx_cap;
709 }
710
711 static u8 ixgbe_dcbnl_setdcbx(struct net_device *dev, u8 mode)
712 {
713 struct ixgbe_adapter *adapter = netdev_priv(dev);
714 struct ieee_ets ets = {0};
715 struct ieee_pfc pfc = {0};
716 int err = 0;
717
718 /* no support for LLD_MANAGED modes or CEE+IEEE */
719 if ((mode & DCB_CAP_DCBX_LLD_MANAGED) ||
720 ((mode & DCB_CAP_DCBX_VER_IEEE) && (mode & DCB_CAP_DCBX_VER_CEE)) ||
721 !(mode & DCB_CAP_DCBX_HOST))
722 return 1;
723
724 if (mode == adapter->dcbx_cap)
725 return 0;
726
727 adapter->dcbx_cap = mode;
728
729 /* ETS and PFC defaults */
730 ets.ets_cap = 8;
731 pfc.pfc_cap = 8;
732
733 if (mode & DCB_CAP_DCBX_VER_IEEE) {
734 ixgbe_dcbnl_ieee_setets(dev, &ets);
735 ixgbe_dcbnl_ieee_setpfc(dev, &pfc);
736 } else if (mode & DCB_CAP_DCBX_VER_CEE) {
737 u8 mask = BIT_PFC | BIT_PG_TX | BIT_PG_RX | BIT_APP_UPCHG;
738
739 adapter->dcb_set_bitmap |= mask;
740 ixgbe_dcbnl_set_all(dev);
741 } else {
742 /* Drop into single TC mode strict priority as this
743 * indicates CEE and IEEE versions are disabled
744 */
745 ixgbe_dcbnl_ieee_setets(dev, &ets);
746 ixgbe_dcbnl_ieee_setpfc(dev, &pfc);
747 err = ixgbe_setup_tc(dev, 0);
748 }
749
750 return err ? 1 : 0;
751 }
752
753 const struct dcbnl_rtnl_ops dcbnl_ops = {
754 .ieee_getets = ixgbe_dcbnl_ieee_getets,
755 .ieee_setets = ixgbe_dcbnl_ieee_setets,
756 .ieee_getpfc = ixgbe_dcbnl_ieee_getpfc,
757 .ieee_setpfc = ixgbe_dcbnl_ieee_setpfc,
758 .ieee_setapp = ixgbe_dcbnl_ieee_setapp,
759 .ieee_delapp = ixgbe_dcbnl_ieee_delapp,
760 .getstate = ixgbe_dcbnl_get_state,
761 .setstate = ixgbe_dcbnl_set_state,
762 .getpermhwaddr = ixgbe_dcbnl_get_perm_hw_addr,
763 .setpgtccfgtx = ixgbe_dcbnl_set_pg_tc_cfg_tx,
764 .setpgbwgcfgtx = ixgbe_dcbnl_set_pg_bwg_cfg_tx,
765 .setpgtccfgrx = ixgbe_dcbnl_set_pg_tc_cfg_rx,
766 .setpgbwgcfgrx = ixgbe_dcbnl_set_pg_bwg_cfg_rx,
767 .getpgtccfgtx = ixgbe_dcbnl_get_pg_tc_cfg_tx,
768 .getpgbwgcfgtx = ixgbe_dcbnl_get_pg_bwg_cfg_tx,
769 .getpgtccfgrx = ixgbe_dcbnl_get_pg_tc_cfg_rx,
770 .getpgbwgcfgrx = ixgbe_dcbnl_get_pg_bwg_cfg_rx,
771 .setpfccfg = ixgbe_dcbnl_set_pfc_cfg,
772 .getpfccfg = ixgbe_dcbnl_get_pfc_cfg,
773 .setall = ixgbe_dcbnl_set_all,
774 .getcap = ixgbe_dcbnl_getcap,
775 .getnumtcs = ixgbe_dcbnl_getnumtcs,
776 .setnumtcs = ixgbe_dcbnl_setnumtcs,
777 .getpfcstate = ixgbe_dcbnl_getpfcstate,
778 .setpfcstate = ixgbe_dcbnl_setpfcstate,
779 .getapp = ixgbe_dcbnl_getapp,
780 .getdcbx = ixgbe_dcbnl_getdcbx,
781 .setdcbx = ixgbe_dcbnl_setdcbx,
782 };
Linux kernel - Deliverables
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