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Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
[deliverable/linux.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 return DCB_NO_HW_CHG;
351
352 ret = ixgbe_copy_dcb_cfg(&adapter->temp_dcb_cfg, &adapter->dcb_cfg,
353 adapter->ring_feature[RING_F_DCB].indices);
354
355 if (ret)
356 return DCB_NO_HW_CHG;
357
358 /*
359 * Only take down the adapter if an app change occured. FCoE
360 * may shuffle tx rings in this case and this can not be done
361 * without a reset currently.
362 */
363 if (adapter->dcb_set_bitmap & BIT_APP_UPCHG) {
364 while (test_and_set_bit(__IXGBE_RESETTING, &adapter->state))
365 msleep(1);
366
367 if (netif_running(netdev))
368 netdev->netdev_ops->ndo_stop(netdev);
369 ixgbe_clear_interrupt_scheme(adapter);
370 }
371
372 if (adapter->dcb_cfg.pfc_mode_enable) {
373 switch (adapter->hw.mac.type) {
374 case ixgbe_mac_82599EB:
375 case ixgbe_mac_X540:
376 if (adapter->hw.fc.current_mode != ixgbe_fc_pfc)
377 adapter->last_lfc_mode =
378 adapter->hw.fc.current_mode;
379 break;
380 default:
381 break;
382 }
383 adapter->hw.fc.requested_mode = ixgbe_fc_pfc;
384 } else {
385 switch (adapter->hw.mac.type) {
386 case ixgbe_mac_82598EB:
387 adapter->hw.fc.requested_mode = ixgbe_fc_none;
388 break;
389 case ixgbe_mac_82599EB:
390 case ixgbe_mac_X540:
391 adapter->hw.fc.requested_mode = adapter->last_lfc_mode;
392 break;
393 default:
394 break;
395 }
396 }
397
398 if (adapter->dcb_set_bitmap & BIT_APP_UPCHG) {
399 ixgbe_init_interrupt_scheme(adapter);
400 if (netif_running(netdev))
401 netdev->netdev_ops->ndo_open(netdev);
402 ret = DCB_HW_CHG_RST;
403 }
404
405 if (adapter->dcb_set_bitmap & BIT_PFC) {
406 u8 pfc_en;
407 ixgbe_dcb_unpack_pfc(&adapter->dcb_cfg, &pfc_en);
408 ixgbe_dcb_hw_pfc_config(&adapter->hw, pfc_en);
409 ret = DCB_HW_CHG;
410 }
411
412 if (adapter->dcb_set_bitmap & (BIT_PG_TX|BIT_PG_RX)) {
413 u16 refill[MAX_TRAFFIC_CLASS], max[MAX_TRAFFIC_CLASS];
414 u8 bwg_id[MAX_TRAFFIC_CLASS], prio_type[MAX_TRAFFIC_CLASS];
415 int max_frame = adapter->netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
416
417 #ifdef CONFIG_FCOE
418 if (adapter->netdev->features & NETIF_F_FCOE_MTU)
419 max_frame = max(max_frame, IXGBE_FCOE_JUMBO_FRAME_SIZE);
420 #endif
421
422 ixgbe_dcb_calculate_tc_credits(&adapter->hw, &adapter->dcb_cfg,
423 max_frame, DCB_TX_CONFIG);
424 ixgbe_dcb_calculate_tc_credits(&adapter->hw, &adapter->dcb_cfg,
425 max_frame, DCB_RX_CONFIG);
426
427 ixgbe_dcb_unpack_refill(&adapter->dcb_cfg,
428 DCB_TX_CONFIG, refill);
429 ixgbe_dcb_unpack_max(&adapter->dcb_cfg, max);
430 ixgbe_dcb_unpack_bwgid(&adapter->dcb_cfg,
431 DCB_TX_CONFIG, bwg_id);
432 ixgbe_dcb_unpack_prio(&adapter->dcb_cfg,
433 DCB_TX_CONFIG, prio_type);
434
435 ixgbe_dcb_hw_ets_config(&adapter->hw, refill, max,
436 bwg_id, prio_type);
437 }
438
439 if (adapter->dcb_cfg.pfc_mode_enable)
440 adapter->hw.fc.current_mode = ixgbe_fc_pfc;
441
442 if (adapter->dcb_set_bitmap & BIT_APP_UPCHG)
443 clear_bit(__IXGBE_RESETTING, &adapter->state);
444 adapter->dcb_set_bitmap = 0x00;
445 return ret;
446 }
447
448 static u8 ixgbe_dcbnl_getcap(struct net_device *netdev, int capid, u8 *cap)
449 {
450 struct ixgbe_adapter *adapter = netdev_priv(netdev);
451 u8 rval = 0;
452
453 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
454 switch (capid) {
455 case DCB_CAP_ATTR_PG:
456 *cap = true;
457 break;
458 case DCB_CAP_ATTR_PFC:
459 *cap = true;
460 break;
461 case DCB_CAP_ATTR_UP2TC:
462 *cap = false;
463 break;
464 case DCB_CAP_ATTR_PG_TCS:
465 *cap = 0x80;
466 break;
467 case DCB_CAP_ATTR_PFC_TCS:
468 *cap = 0x80;
469 break;
470 case DCB_CAP_ATTR_GSP:
471 *cap = true;
472 break;
473 case DCB_CAP_ATTR_BCN:
474 *cap = false;
475 break;
476 default:
477 rval = -EINVAL;
478 break;
479 }
480 } else {
481 rval = -EINVAL;
482 }
483
484 return rval;
485 }
486
487 static u8 ixgbe_dcbnl_getnumtcs(struct net_device *netdev, int tcid, u8 *num)
488 {
489 struct ixgbe_adapter *adapter = netdev_priv(netdev);
490 u8 rval = 0;
491
492 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
493 switch (tcid) {
494 case DCB_NUMTCS_ATTR_PG:
495 *num = MAX_TRAFFIC_CLASS;
496 break;
497 case DCB_NUMTCS_ATTR_PFC:
498 *num = MAX_TRAFFIC_CLASS;
499 break;
500 default:
501 rval = -EINVAL;
502 break;
503 }
504 } else {
505 rval = -EINVAL;
506 }
507
508 return rval;
509 }
510
511 static u8 ixgbe_dcbnl_setnumtcs(struct net_device *netdev, int tcid, u8 num)
512 {
513 return -EINVAL;
514 }
515
516 static u8 ixgbe_dcbnl_getpfcstate(struct net_device *netdev)
517 {
518 struct ixgbe_adapter *adapter = netdev_priv(netdev);
519
520 return adapter->dcb_cfg.pfc_mode_enable;
521 }
522
523 static void ixgbe_dcbnl_setpfcstate(struct net_device *netdev, u8 state)
524 {
525 struct ixgbe_adapter *adapter = netdev_priv(netdev);
526
527 adapter->temp_dcb_cfg.pfc_mode_enable = state;
528 if (adapter->temp_dcb_cfg.pfc_mode_enable !=
529 adapter->dcb_cfg.pfc_mode_enable)
530 adapter->dcb_set_bitmap |= BIT_PFC;
531 }
532
533 /**
534 * ixgbe_dcbnl_getapp - retrieve the DCBX application user priority
535 * @netdev : the corresponding netdev
536 * @idtype : identifies the id as ether type or TCP/UDP port number
537 * @id: id is either ether type or TCP/UDP port number
538 *
539 * Returns : on success, returns a non-zero 802.1p user priority bitmap
540 * otherwise returns 0 as the invalid user priority bitmap to indicate an
541 * error.
542 */
543 static u8 ixgbe_dcbnl_getapp(struct net_device *netdev, u8 idtype, u16 id)
544 {
545 u8 rval = 0;
546
547 switch (idtype) {
548 case DCB_APP_IDTYPE_ETHTYPE:
549 #ifdef IXGBE_FCOE
550 if (id == ETH_P_FCOE)
551 rval = ixgbe_fcoe_getapp(netdev_priv(netdev));
552 #endif
553 break;
554 case DCB_APP_IDTYPE_PORTNUM:
555 break;
556 default:
557 break;
558 }
559 return rval;
560 }
561
562 /**
563 * ixgbe_dcbnl_setapp - set the DCBX application user priority
564 * @netdev : the corresponding netdev
565 * @idtype : identifies the id as ether type or TCP/UDP port number
566 * @id: id is either ether type or TCP/UDP port number
567 * @up: the 802.1p user priority bitmap
568 *
569 * Returns : 0 on success or 1 on error
570 */
571 static u8 ixgbe_dcbnl_setapp(struct net_device *netdev,
572 u8 idtype, u16 id, u8 up)
573 {
574 u8 rval = 1;
575
576 switch (idtype) {
577 case DCB_APP_IDTYPE_ETHTYPE:
578 #ifdef IXGBE_FCOE
579 if (id == ETH_P_FCOE) {
580 u8 old_tc;
581 struct ixgbe_adapter *adapter = netdev_priv(netdev);
582
583 /* Get current programmed tc */
584 old_tc = adapter->fcoe.tc;
585 rval = ixgbe_fcoe_setapp(adapter, up);
586
587 if (rval ||
588 !(adapter->flags & IXGBE_FLAG_DCB_ENABLED) ||
589 !(adapter->flags & IXGBE_FLAG_FCOE_ENABLED))
590 break;
591
592 /* The FCoE application priority may be changed multiple
593 * times in quick sucession with switches that build up
594 * TLVs. To avoid creating uneeded device resets this
595 * checks the actual HW configuration and clears
596 * BIT_APP_UPCHG if a HW configuration change is not
597 * need
598 */
599 if (old_tc == adapter->fcoe.tc)
600 adapter->dcb_set_bitmap &= ~BIT_APP_UPCHG;
601 else
602 adapter->dcb_set_bitmap |= BIT_APP_UPCHG;
603 }
604 #endif
605 break;
606 case DCB_APP_IDTYPE_PORTNUM:
607 break;
608 default:
609 break;
610 }
611 return rval;
612 }
613
614 static int ixgbe_dcbnl_ieee_getets(struct net_device *dev,
615 struct ieee_ets *ets)
616 {
617 struct ixgbe_adapter *adapter = netdev_priv(dev);
618 struct ieee_ets *my_ets = adapter->ixgbe_ieee_ets;
619
620 /* No IEEE PFC settings available */
621 if (!my_ets)
622 return -EINVAL;
623
624 ets->ets_cap = MAX_TRAFFIC_CLASS;
625 ets->cbs = my_ets->cbs;
626 memcpy(ets->tc_tx_bw, my_ets->tc_tx_bw, sizeof(ets->tc_tx_bw));
627 memcpy(ets->tc_rx_bw, my_ets->tc_rx_bw, sizeof(ets->tc_rx_bw));
628 memcpy(ets->tc_tsa, my_ets->tc_tsa, sizeof(ets->tc_tsa));
629 memcpy(ets->prio_tc, my_ets->prio_tc, sizeof(ets->prio_tc));
630 return 0;
631 }
632
633 static int ixgbe_dcbnl_ieee_setets(struct net_device *dev,
634 struct ieee_ets *ets)
635 {
636 struct ixgbe_adapter *adapter = netdev_priv(dev);
637 __u16 refill[IEEE_8021QAZ_MAX_TCS], max[IEEE_8021QAZ_MAX_TCS];
638 int max_frame = dev->mtu + ETH_HLEN + ETH_FCS_LEN;
639 int err;
640 /* naively give each TC a bwg to map onto CEE hardware */
641 __u8 bwg_id[IEEE_8021QAZ_MAX_TCS] = {0, 1, 2, 3, 4, 5, 6, 7};
642
643 if (!adapter->ixgbe_ieee_ets) {
644 adapter->ixgbe_ieee_ets = kmalloc(sizeof(struct ieee_ets),
645 GFP_KERNEL);
646 if (!adapter->ixgbe_ieee_ets)
647 return -ENOMEM;
648 }
649
650
651 memcpy(adapter->ixgbe_ieee_ets, ets, sizeof(*adapter->ixgbe_ieee_ets));
652
653 ixgbe_ieee_credits(ets->tc_tx_bw, refill, max, max_frame);
654 err = ixgbe_dcb_hw_ets_config(&adapter->hw, refill, max,
655 bwg_id, ets->tc_tsa);
656 return err;
657 }
658
659 static int ixgbe_dcbnl_ieee_getpfc(struct net_device *dev,
660 struct ieee_pfc *pfc)
661 {
662 struct ixgbe_adapter *adapter = netdev_priv(dev);
663 struct ieee_pfc *my_pfc = adapter->ixgbe_ieee_pfc;
664 int i;
665
666 /* No IEEE PFC settings available */
667 if (!my_pfc)
668 return -EINVAL;
669
670 pfc->pfc_cap = MAX_TRAFFIC_CLASS;
671 pfc->pfc_en = my_pfc->pfc_en;
672 pfc->mbc = my_pfc->mbc;
673 pfc->delay = my_pfc->delay;
674
675 for (i = 0; i < MAX_TRAFFIC_CLASS; i++) {
676 pfc->requests[i] = adapter->stats.pxoffrxc[i];
677 pfc->indications[i] = adapter->stats.pxofftxc[i];
678 }
679
680 return 0;
681 }
682
683 static int ixgbe_dcbnl_ieee_setpfc(struct net_device *dev,
684 struct ieee_pfc *pfc)
685 {
686 struct ixgbe_adapter *adapter = netdev_priv(dev);
687 int err;
688
689 if (!adapter->ixgbe_ieee_pfc) {
690 adapter->ixgbe_ieee_pfc = kmalloc(sizeof(struct ieee_pfc),
691 GFP_KERNEL);
692 if (!adapter->ixgbe_ieee_pfc)
693 return -ENOMEM;
694 }
695
696 memcpy(adapter->ixgbe_ieee_pfc, pfc, sizeof(*adapter->ixgbe_ieee_pfc));
697 err = ixgbe_dcb_hw_pfc_config(&adapter->hw, pfc->pfc_en);
698 return err;
699 }
700
701 const struct dcbnl_rtnl_ops dcbnl_ops = {
702 .ieee_getets = ixgbe_dcbnl_ieee_getets,
703 .ieee_setets = ixgbe_dcbnl_ieee_setets,
704 .ieee_getpfc = ixgbe_dcbnl_ieee_getpfc,
705 .ieee_setpfc = ixgbe_dcbnl_ieee_setpfc,
706 .getstate = ixgbe_dcbnl_get_state,
707 .setstate = ixgbe_dcbnl_set_state,
708 .getpermhwaddr = ixgbe_dcbnl_get_perm_hw_addr,
709 .setpgtccfgtx = ixgbe_dcbnl_set_pg_tc_cfg_tx,
710 .setpgbwgcfgtx = ixgbe_dcbnl_set_pg_bwg_cfg_tx,
711 .setpgtccfgrx = ixgbe_dcbnl_set_pg_tc_cfg_rx,
712 .setpgbwgcfgrx = ixgbe_dcbnl_set_pg_bwg_cfg_rx,
713 .getpgtccfgtx = ixgbe_dcbnl_get_pg_tc_cfg_tx,
714 .getpgbwgcfgtx = ixgbe_dcbnl_get_pg_bwg_cfg_tx,
715 .getpgtccfgrx = ixgbe_dcbnl_get_pg_tc_cfg_rx,
716 .getpgbwgcfgrx = ixgbe_dcbnl_get_pg_bwg_cfg_rx,
717 .setpfccfg = ixgbe_dcbnl_set_pfc_cfg,
718 .getpfccfg = ixgbe_dcbnl_get_pfc_cfg,
719 .setall = ixgbe_dcbnl_set_all,
720 .getcap = ixgbe_dcbnl_getcap,
721 .getnumtcs = ixgbe_dcbnl_getnumtcs,
722 .setnumtcs = ixgbe_dcbnl_setnumtcs,
723 .getpfcstate = ixgbe_dcbnl_getpfcstate,
724 .setpfcstate = ixgbe_dcbnl_setpfcstate,
725 .getapp = ixgbe_dcbnl_getapp,
726 .setapp = ixgbe_dcbnl_setapp,
727 };
728
Linux kernel - Deliverables
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