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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
[linux-btrfs-devel.git] / drivers / net / ethernet / intel / ixgbe / ixgbe_dcb_nl.c
blob3631d639d86a596cf023f3f7f9474508c10ebc93
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 /* Fail command if not in CEE mode */
118 if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE))
119 return 1;
120
121 /* verify there is something to do, if not then exit */
122 if (!!state != !(adapter->flags & IXGBE_FLAG_DCB_ENABLED))
123 return err;
124
125 if (state > 0)
126 err = ixgbe_setup_tc(netdev, adapter->dcb_cfg.num_tcs.pg_tcs);
127 else
128 err = ixgbe_setup_tc(netdev, 0);
129
130 return err;
131 }
132
133 static void ixgbe_dcbnl_get_perm_hw_addr(struct net_device *netdev,
134 u8 *perm_addr)
135 {
136 struct ixgbe_adapter *adapter = netdev_priv(netdev);
137 int i, j;
138
139 memset(perm_addr, 0xff, MAX_ADDR_LEN);
140
141 for (i = 0; i < netdev->addr_len; i++)
142 perm_addr[i] = adapter->hw.mac.perm_addr[i];
143
144 switch (adapter->hw.mac.type) {
145 case ixgbe_mac_82599EB:
146 case ixgbe_mac_X540:
147 for (j = 0; j < netdev->addr_len; j++, i++)
148 perm_addr[i] = adapter->hw.mac.san_addr[j];
149 break;
150 default:
151 break;
152 }
153 }
154
155 static void ixgbe_dcbnl_set_pg_tc_cfg_tx(struct net_device *netdev, int tc,
156 u8 prio, u8 bwg_id, u8 bw_pct,
157 u8 up_map)
158 {
159 struct ixgbe_adapter *adapter = netdev_priv(netdev);
160
161 /* Abort a bad configuration */
162 if (ffs(up_map) > adapter->dcb_cfg.num_tcs.pg_tcs)
163 return;
164
165 if (prio != DCB_ATTR_VALUE_UNDEFINED)
166 adapter->temp_dcb_cfg.tc_config[tc].path[0].prio_type = prio;
167 if (bwg_id != DCB_ATTR_VALUE_UNDEFINED)
168 adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_id = bwg_id;
169 if (bw_pct != DCB_ATTR_VALUE_UNDEFINED)
170 adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_percent =
171 bw_pct;
172 if (up_map != DCB_ATTR_VALUE_UNDEFINED)
173 adapter->temp_dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap =
174 up_map;
175
176 if ((adapter->temp_dcb_cfg.tc_config[tc].path[0].prio_type !=
177 adapter->dcb_cfg.tc_config[tc].path[0].prio_type) ||
178 (adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_id !=
179 adapter->dcb_cfg.tc_config[tc].path[0].bwg_id) ||
180 (adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_percent !=
181 adapter->dcb_cfg.tc_config[tc].path[0].bwg_percent) ||
182 (adapter->temp_dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap !=
183 adapter->dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap))
184 adapter->dcb_set_bitmap |= BIT_PG_TX;
185
186 if (adapter->temp_dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap !=
187 adapter->dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap)
188 adapter->dcb_set_bitmap |= BIT_PFC;
189 }
190
191 static void ixgbe_dcbnl_set_pg_bwg_cfg_tx(struct net_device *netdev, int bwg_id,
192 u8 bw_pct)
193 {
194 struct ixgbe_adapter *adapter = netdev_priv(netdev);
195
196 adapter->temp_dcb_cfg.bw_percentage[0][bwg_id] = bw_pct;
197
198 if (adapter->temp_dcb_cfg.bw_percentage[0][bwg_id] !=
199 adapter->dcb_cfg.bw_percentage[0][bwg_id])
200 adapter->dcb_set_bitmap |= BIT_PG_TX;
201 }
202
203 static void ixgbe_dcbnl_set_pg_tc_cfg_rx(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 /* Abort bad configurations */
210 if (ffs(up_map) > adapter->dcb_cfg.num_tcs.pg_tcs)
211 return;
212
213 if (prio != DCB_ATTR_VALUE_UNDEFINED)
214 adapter->temp_dcb_cfg.tc_config[tc].path[1].prio_type = prio;
215 if (bwg_id != DCB_ATTR_VALUE_UNDEFINED)
216 adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_id = bwg_id;
217 if (bw_pct != DCB_ATTR_VALUE_UNDEFINED)
218 adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_percent =
219 bw_pct;
220 if (up_map != DCB_ATTR_VALUE_UNDEFINED)
221 adapter->temp_dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap =
222 up_map;
223
224 if ((adapter->temp_dcb_cfg.tc_config[tc].path[1].prio_type !=
225 adapter->dcb_cfg.tc_config[tc].path[1].prio_type) ||
226 (adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_id !=
227 adapter->dcb_cfg.tc_config[tc].path[1].bwg_id) ||
228 (adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_percent !=
229 adapter->dcb_cfg.tc_config[tc].path[1].bwg_percent) ||
230 (adapter->temp_dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap !=
231 adapter->dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap))
232 adapter->dcb_set_bitmap |= BIT_PG_RX;
233
234 if (adapter->temp_dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap !=
235 adapter->dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap)
236 adapter->dcb_set_bitmap |= BIT_PFC;
237 }
238
239 static void ixgbe_dcbnl_set_pg_bwg_cfg_rx(struct net_device *netdev, int bwg_id,
240 u8 bw_pct)
241 {
242 struct ixgbe_adapter *adapter = netdev_priv(netdev);
243
244 adapter->temp_dcb_cfg.bw_percentage[1][bwg_id] = bw_pct;
245
246 if (adapter->temp_dcb_cfg.bw_percentage[1][bwg_id] !=
247 adapter->dcb_cfg.bw_percentage[1][bwg_id])
248 adapter->dcb_set_bitmap |= BIT_PG_RX;
249 }
250
251 static void ixgbe_dcbnl_get_pg_tc_cfg_tx(struct net_device *netdev, int tc,
252 u8 *prio, u8 *bwg_id, u8 *bw_pct,
253 u8 *up_map)
254 {
255 struct ixgbe_adapter *adapter = netdev_priv(netdev);
256
257 *prio = adapter->dcb_cfg.tc_config[tc].path[0].prio_type;
258 *bwg_id = adapter->dcb_cfg.tc_config[tc].path[0].bwg_id;
259 *bw_pct = adapter->dcb_cfg.tc_config[tc].path[0].bwg_percent;
260 *up_map = adapter->dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap;
261 }
262
263 static void ixgbe_dcbnl_get_pg_bwg_cfg_tx(struct net_device *netdev, int bwg_id,
264 u8 *bw_pct)
265 {
266 struct ixgbe_adapter *adapter = netdev_priv(netdev);
267
268 *bw_pct = adapter->dcb_cfg.bw_percentage[0][bwg_id];
269 }
270
271 static void ixgbe_dcbnl_get_pg_tc_cfg_rx(struct net_device *netdev, int tc,
272 u8 *prio, u8 *bwg_id, u8 *bw_pct,
273 u8 *up_map)
274 {
275 struct ixgbe_adapter *adapter = netdev_priv(netdev);
276
277 *prio = adapter->dcb_cfg.tc_config[tc].path[1].prio_type;
278 *bwg_id = adapter->dcb_cfg.tc_config[tc].path[1].bwg_id;
279 *bw_pct = adapter->dcb_cfg.tc_config[tc].path[1].bwg_percent;
280 *up_map = adapter->dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap;
281 }
282
283 static void ixgbe_dcbnl_get_pg_bwg_cfg_rx(struct net_device *netdev, int bwg_id,
284 u8 *bw_pct)
285 {
286 struct ixgbe_adapter *adapter = netdev_priv(netdev);
287
288 *bw_pct = adapter->dcb_cfg.bw_percentage[1][bwg_id];
289 }
290
291 static void ixgbe_dcbnl_set_pfc_cfg(struct net_device *netdev, int priority,
292 u8 setting)
293 {
294 struct ixgbe_adapter *adapter = netdev_priv(netdev);
295
296 adapter->temp_dcb_cfg.tc_config[priority].dcb_pfc = setting;
297 if (adapter->temp_dcb_cfg.tc_config[priority].dcb_pfc !=
298 adapter->dcb_cfg.tc_config[priority].dcb_pfc) {
299 adapter->dcb_set_bitmap |= BIT_PFC;
300 adapter->temp_dcb_cfg.pfc_mode_enable = true;
301 }
302 }
303
304 static void ixgbe_dcbnl_get_pfc_cfg(struct net_device *netdev, int priority,
305 u8 *setting)
306 {
307 struct ixgbe_adapter *adapter = netdev_priv(netdev);
308
309 *setting = adapter->dcb_cfg.tc_config[priority].dcb_pfc;
310 }
311
312 static u8 ixgbe_dcbnl_set_all(struct net_device *netdev)
313 {
314 struct ixgbe_adapter *adapter = netdev_priv(netdev);
315 int ret, i;
316 #ifdef IXGBE_FCOE
317 struct dcb_app app = {
318 .selector = DCB_APP_IDTYPE_ETHTYPE,
319 .protocol = ETH_P_FCOE,
320 };
321 u8 up;
322
323 /* In IEEE mode, use the IEEE Ethertype selector value */
324 if (adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE) {
325 app.selector = IEEE_8021QAZ_APP_SEL_ETHERTYPE;
326 up = dcb_ieee_getapp_mask(netdev, &app);
327 } else {
328 up = dcb_getapp(netdev, &app);
329 }
330 #endif
331
332 /* Fail command if not in CEE mode */
333 if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE))
334 return 1;
335
336 ret = ixgbe_copy_dcb_cfg(&adapter->temp_dcb_cfg, &adapter->dcb_cfg,
337 MAX_TRAFFIC_CLASS);
338 if (ret)
339 return DCB_NO_HW_CHG;
340
341 #ifdef IXGBE_FCOE
342 if (up && !(up & (1 << adapter->fcoe.up)))
343 adapter->dcb_set_bitmap |= BIT_APP_UPCHG;
344
345 /*
346 * Only take down the adapter if an app change occurred. FCoE
347 * may shuffle tx rings in this case and this can not be done
348 * without a reset currently.
349 */
350 if (adapter->dcb_set_bitmap & BIT_APP_UPCHG) {
351 while (test_and_set_bit(__IXGBE_RESETTING, &adapter->state))
352 usleep_range(1000, 2000);
353
354 adapter->fcoe.up = ffs(up) - 1;
355
356 if (netif_running(netdev))
357 netdev->netdev_ops->ndo_stop(netdev);
358 ixgbe_clear_interrupt_scheme(adapter);
359 }
360 #endif
361
362 if (adapter->dcb_cfg.pfc_mode_enable) {
363 switch (adapter->hw.mac.type) {
364 case ixgbe_mac_82599EB:
365 case ixgbe_mac_X540:
366 if (adapter->hw.fc.current_mode != ixgbe_fc_pfc)
367 adapter->last_lfc_mode =
368 adapter->hw.fc.current_mode;
369 break;
370 default:
371 break;
372 }
373 adapter->hw.fc.requested_mode = ixgbe_fc_pfc;
374 } else {
375 switch (adapter->hw.mac.type) {
376 case ixgbe_mac_82598EB:
377 adapter->hw.fc.requested_mode = ixgbe_fc_none;
378 break;
379 case ixgbe_mac_82599EB:
380 case ixgbe_mac_X540:
381 adapter->hw.fc.requested_mode = adapter->last_lfc_mode;
382 break;
383 default:
384 break;
385 }
386 }
387
388 #ifdef IXGBE_FCOE
389 if (adapter->dcb_set_bitmap & BIT_APP_UPCHG) {
390 ixgbe_init_interrupt_scheme(adapter);
391 if (netif_running(netdev))
392 netdev->netdev_ops->ndo_open(netdev);
393 ret = DCB_HW_CHG_RST;
394 }
395 #endif
396
397 if (adapter->dcb_set_bitmap & (BIT_PG_TX|BIT_PG_RX)) {
398 u16 refill[MAX_TRAFFIC_CLASS], max[MAX_TRAFFIC_CLASS];
399 u8 bwg_id[MAX_TRAFFIC_CLASS], prio_type[MAX_TRAFFIC_CLASS];
400 /* Priority to TC mapping in CEE case default to 1:1 */
401 u8 prio_tc[MAX_USER_PRIORITY];
402 int max_frame = adapter->netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
403
404 #ifdef IXGBE_FCOE
405 if (adapter->netdev->features & NETIF_F_FCOE_MTU)
406 max_frame = max(max_frame, IXGBE_FCOE_JUMBO_FRAME_SIZE);
407 #endif
408
409 ixgbe_dcb_calculate_tc_credits(&adapter->hw, &adapter->dcb_cfg,
410 max_frame, DCB_TX_CONFIG);
411 ixgbe_dcb_calculate_tc_credits(&adapter->hw, &adapter->dcb_cfg,
412 max_frame, DCB_RX_CONFIG);
413
414 ixgbe_dcb_unpack_refill(&adapter->dcb_cfg,
415 DCB_TX_CONFIG, refill);
416 ixgbe_dcb_unpack_max(&adapter->dcb_cfg, max);
417 ixgbe_dcb_unpack_bwgid(&adapter->dcb_cfg,
418 DCB_TX_CONFIG, bwg_id);
419 ixgbe_dcb_unpack_prio(&adapter->dcb_cfg,
420 DCB_TX_CONFIG, prio_type);
421 ixgbe_dcb_unpack_map(&adapter->dcb_cfg,
422 DCB_TX_CONFIG, prio_tc);
423
424 ixgbe_dcb_hw_ets_config(&adapter->hw, refill, max,
425 bwg_id, prio_type, prio_tc);
426
427 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
428 netdev_set_prio_tc_map(netdev, i, prio_tc[i]);
429 }
430
431 if (adapter->dcb_set_bitmap & BIT_PFC) {
432 u8 pfc_en;
433 u8 prio_tc[MAX_USER_PRIORITY];
434
435 ixgbe_dcb_unpack_map(&adapter->dcb_cfg,
436 DCB_TX_CONFIG, prio_tc);
437 ixgbe_dcb_unpack_pfc(&adapter->dcb_cfg, &pfc_en);
438 ixgbe_dcb_hw_pfc_config(&adapter->hw, pfc_en, prio_tc);
439 ret = DCB_HW_CHG;
440 }
441
442 if (adapter->dcb_cfg.pfc_mode_enable)
443 adapter->hw.fc.current_mode = ixgbe_fc_pfc;
444
445 if (adapter->dcb_set_bitmap & BIT_APP_UPCHG)
446 clear_bit(__IXGBE_RESETTING, &adapter->state);
447 adapter->dcb_set_bitmap = 0x00;
448 return ret;
449 }
450
451 static u8 ixgbe_dcbnl_getcap(struct net_device *netdev, int capid, u8 *cap)
452 {
453 struct ixgbe_adapter *adapter = netdev_priv(netdev);
454
455 switch (capid) {
456 case DCB_CAP_ATTR_PG:
457 *cap = true;
458 break;
459 case DCB_CAP_ATTR_PFC:
460 *cap = true;
461 break;
462 case DCB_CAP_ATTR_UP2TC:
463 *cap = false;
464 break;
465 case DCB_CAP_ATTR_PG_TCS:
466 *cap = 0x80;
467 break;
468 case DCB_CAP_ATTR_PFC_TCS:
469 *cap = 0x80;
470 break;
471 case DCB_CAP_ATTR_GSP:
472 *cap = true;
473 break;
474 case DCB_CAP_ATTR_BCN:
475 *cap = false;
476 break;
477 case DCB_CAP_ATTR_DCBX:
478 *cap = adapter->dcbx_cap;
479 break;
480 default:
481 *cap = false;
482 break;
483 }
484
485 return 0;
486 }
487
488 static u8 ixgbe_dcbnl_getnumtcs(struct net_device *netdev, int tcid, u8 *num)
489 {
490 struct ixgbe_adapter *adapter = netdev_priv(netdev);
491 u8 rval = 0;
492
493 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
494 switch (tcid) {
495 case DCB_NUMTCS_ATTR_PG:
496 *num = adapter->dcb_cfg.num_tcs.pg_tcs;
497 break;
498 case DCB_NUMTCS_ATTR_PFC:
499 *num = adapter->dcb_cfg.num_tcs.pfc_tcs;
500 break;
501 default:
502 rval = -EINVAL;
503 break;
504 }
505 } else {
506 rval = -EINVAL;
507 }
508
509 return rval;
510 }
511
512 static u8 ixgbe_dcbnl_setnumtcs(struct net_device *netdev, int tcid, u8 num)
513 {
514 return -EINVAL;
515 }
516
517 static u8 ixgbe_dcbnl_getpfcstate(struct net_device *netdev)
518 {
519 struct ixgbe_adapter *adapter = netdev_priv(netdev);
520
521 return adapter->dcb_cfg.pfc_mode_enable;
522 }
523
524 static void ixgbe_dcbnl_setpfcstate(struct net_device *netdev, u8 state)
525 {
526 struct ixgbe_adapter *adapter = netdev_priv(netdev);
527
528 adapter->temp_dcb_cfg.pfc_mode_enable = state;
529 if (adapter->temp_dcb_cfg.pfc_mode_enable !=
530 adapter->dcb_cfg.pfc_mode_enable)
531 adapter->dcb_set_bitmap |= BIT_PFC;
532 }
533
534 /**
535 * ixgbe_dcbnl_getapp - retrieve the DCBX application user priority
536 * @netdev : the corresponding netdev
537 * @idtype : identifies the id as ether type or TCP/UDP port number
538 * @id: id is either ether type or TCP/UDP port number
539 *
540 * Returns : on success, returns a non-zero 802.1p user priority bitmap
541 * otherwise returns 0 as the invalid user priority bitmap to indicate an
542 * error.
543 */
544 static u8 ixgbe_dcbnl_getapp(struct net_device *netdev, u8 idtype, u16 id)
545 {
546 struct ixgbe_adapter *adapter = netdev_priv(netdev);
547 struct dcb_app app = {
548 .selector = idtype,
549 .protocol = id,
550 };
551
552 if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE))
553 return 0;
554
555 return dcb_getapp(netdev, &app);
556 }
557
558 static int ixgbe_dcbnl_ieee_getets(struct net_device *dev,
559 struct ieee_ets *ets)
560 {
561 struct ixgbe_adapter *adapter = netdev_priv(dev);
562 struct ieee_ets *my_ets = adapter->ixgbe_ieee_ets;
563
564 /* No IEEE PFC settings available */
565 if (!my_ets)
566 return -EINVAL;
567
568 ets->ets_cap = adapter->dcb_cfg.num_tcs.pg_tcs;
569 ets->cbs = my_ets->cbs;
570 memcpy(ets->tc_tx_bw, my_ets->tc_tx_bw, sizeof(ets->tc_tx_bw));
571 memcpy(ets->tc_rx_bw, my_ets->tc_rx_bw, sizeof(ets->tc_rx_bw));
572 memcpy(ets->tc_tsa, my_ets->tc_tsa, sizeof(ets->tc_tsa));
573 memcpy(ets->prio_tc, my_ets->prio_tc, sizeof(ets->prio_tc));
574 return 0;
575 }
576
577 static int ixgbe_dcbnl_ieee_setets(struct net_device *dev,
578 struct ieee_ets *ets)
579 {
580 struct ixgbe_adapter *adapter = netdev_priv(dev);
581 int max_frame = dev->mtu + ETH_HLEN + ETH_FCS_LEN;
582 int i;
583 __u8 max_tc = 0;
584
585 if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
586 return -EINVAL;
587
588 if (!adapter->ixgbe_ieee_ets) {
589 adapter->ixgbe_ieee_ets = kmalloc(sizeof(struct ieee_ets),
590 GFP_KERNEL);
591 if (!adapter->ixgbe_ieee_ets)
592 return -ENOMEM;
593 }
594
595 memcpy(adapter->ixgbe_ieee_ets, ets, sizeof(*adapter->ixgbe_ieee_ets));
596
597 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
598 if (ets->prio_tc[i] > max_tc)
599 max_tc = ets->prio_tc[i];
600 }
601
602 if (max_tc)
603 max_tc++;
604
605 if (max_tc > adapter->dcb_cfg.num_tcs.pg_tcs)
606 return -EINVAL;
607
608 if (max_tc != netdev_get_num_tc(dev))
609 ixgbe_setup_tc(dev, max_tc);
610
611 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
612 netdev_set_prio_tc_map(dev, i, ets->prio_tc[i]);
613
614 return ixgbe_dcb_hw_ets(&adapter->hw, ets, max_frame);
615 }
616
617 static int ixgbe_dcbnl_ieee_getpfc(struct net_device *dev,
618 struct ieee_pfc *pfc)
619 {
620 struct ixgbe_adapter *adapter = netdev_priv(dev);
621 struct ieee_pfc *my_pfc = adapter->ixgbe_ieee_pfc;
622 int i;
623
624 /* No IEEE PFC settings available */
625 if (!my_pfc)
626 return -EINVAL;
627
628 pfc->pfc_cap = adapter->dcb_cfg.num_tcs.pfc_tcs;
629 pfc->pfc_en = my_pfc->pfc_en;
630 pfc->mbc = my_pfc->mbc;
631 pfc->delay = my_pfc->delay;
632
633 for (i = 0; i < MAX_TRAFFIC_CLASS; i++) {
634 pfc->requests[i] = adapter->stats.pxoffrxc[i];
635 pfc->indications[i] = adapter->stats.pxofftxc[i];
636 }
637
638 return 0;
639 }
640
641 static int ixgbe_dcbnl_ieee_setpfc(struct net_device *dev,
642 struct ieee_pfc *pfc)
643 {
644 struct ixgbe_adapter *adapter = netdev_priv(dev);
645 u8 *prio_tc;
646
647 if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
648 return -EINVAL;
649
650 if (!adapter->ixgbe_ieee_pfc) {
651 adapter->ixgbe_ieee_pfc = kmalloc(sizeof(struct ieee_pfc),
652 GFP_KERNEL);
653 if (!adapter->ixgbe_ieee_pfc)
654 return -ENOMEM;
655 }
656
657 prio_tc = adapter->ixgbe_ieee_ets->prio_tc;
658 memcpy(adapter->ixgbe_ieee_pfc, pfc, sizeof(*adapter->ixgbe_ieee_pfc));
659 return ixgbe_dcb_hw_pfc_config(&adapter->hw, pfc->pfc_en, prio_tc);
660 }
661
662 #ifdef IXGBE_FCOE
663 static void ixgbe_dcbnl_devreset(struct net_device *dev)
664 {
665 struct ixgbe_adapter *adapter = netdev_priv(dev);
666
667 if (netif_running(dev))
668 dev->netdev_ops->ndo_stop(dev);
669
670 ixgbe_clear_interrupt_scheme(adapter);
671 ixgbe_init_interrupt_scheme(adapter);
672
673 if (netif_running(dev))
674 dev->netdev_ops->ndo_open(dev);
675 }
676 #endif
677
678 static int ixgbe_dcbnl_ieee_setapp(struct net_device *dev,
679 struct dcb_app *app)
680 {
681 struct ixgbe_adapter *adapter = netdev_priv(dev);
682 int err = -EINVAL;
683
684 if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
685 return err;
686
687 err = dcb_ieee_setapp(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->priority;
698 ixgbe_dcbnl_devreset(dev);
699 }
700 #endif
701 return 0;
702 }
703
704 static int ixgbe_dcbnl_ieee_delapp(struct net_device *dev,
705 struct dcb_app *app)
706 {
707 struct ixgbe_adapter *adapter = netdev_priv(dev);
708 int err;
709
710 if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
711 return -EINVAL;
712
713 err = dcb_ieee_delapp(dev, app);
714
715 #ifdef IXGBE_FCOE
716 if (!err && app->selector == IEEE_8021QAZ_APP_SEL_ETHERTYPE &&
717 app->protocol == ETH_P_FCOE) {
718 u8 app_mask = dcb_ieee_getapp_mask(dev, app);
719
720 if (app_mask & (1 << adapter->fcoe.up))
721 return err;
722
723 adapter->fcoe.up = app_mask ?
724 ffs(app_mask) - 1 : IXGBE_FCOE_DEFTC;
725 ixgbe_dcbnl_devreset(dev);
726 }
727 #endif
728 return err;
729 }
730
731 static u8 ixgbe_dcbnl_getdcbx(struct net_device *dev)
732 {
733 struct ixgbe_adapter *adapter = netdev_priv(dev);
734 return adapter->dcbx_cap;
735 }
736
737 static u8 ixgbe_dcbnl_setdcbx(struct net_device *dev, u8 mode)
738 {
739 struct ixgbe_adapter *adapter = netdev_priv(dev);
740 struct ieee_ets ets = {0};
741 struct ieee_pfc pfc = {0};
742
743 /* no support for LLD_MANAGED modes or CEE+IEEE */
744 if ((mode & DCB_CAP_DCBX_LLD_MANAGED) ||
745 ((mode & DCB_CAP_DCBX_VER_IEEE) && (mode & DCB_CAP_DCBX_VER_CEE)) ||
746 !(mode & DCB_CAP_DCBX_HOST))
747 return 1;
748
749 if (mode == adapter->dcbx_cap)
750 return 0;
751
752 adapter->dcbx_cap = mode;
753
754 /* ETS and PFC defaults */
755 ets.ets_cap = 8;
756 pfc.pfc_cap = 8;
757
758 if (mode & DCB_CAP_DCBX_VER_IEEE) {
759 ixgbe_dcbnl_ieee_setets(dev, &ets);
760 ixgbe_dcbnl_ieee_setpfc(dev, &pfc);
761 } else if (mode & DCB_CAP_DCBX_VER_CEE) {
762 adapter->dcb_set_bitmap |= (BIT_PFC & BIT_PG_TX & BIT_PG_RX);
763 ixgbe_dcbnl_set_all(dev);
764 } else {
765 /* Drop into single TC mode strict priority as this
766 * indicates CEE and IEEE versions are disabled
767 */
768 ixgbe_dcbnl_ieee_setets(dev, &ets);
769 ixgbe_dcbnl_ieee_setpfc(dev, &pfc);
770 ixgbe_setup_tc(dev, 0);
771 }
772
773 return 0;
774 }
775
776 const struct dcbnl_rtnl_ops dcbnl_ops = {
777 .ieee_getets = ixgbe_dcbnl_ieee_getets,
778 .ieee_setets = ixgbe_dcbnl_ieee_setets,
779 .ieee_getpfc = ixgbe_dcbnl_ieee_getpfc,
780 .ieee_setpfc = ixgbe_dcbnl_ieee_setpfc,
781 .ieee_setapp = ixgbe_dcbnl_ieee_setapp,
782 .ieee_delapp = ixgbe_dcbnl_ieee_delapp,
783 .getstate = ixgbe_dcbnl_get_state,
784 .setstate = ixgbe_dcbnl_set_state,
785 .getpermhwaddr = ixgbe_dcbnl_get_perm_hw_addr,
786 .setpgtccfgtx = ixgbe_dcbnl_set_pg_tc_cfg_tx,
787 .setpgbwgcfgtx = ixgbe_dcbnl_set_pg_bwg_cfg_tx,
788 .setpgtccfgrx = ixgbe_dcbnl_set_pg_tc_cfg_rx,
789 .setpgbwgcfgrx = ixgbe_dcbnl_set_pg_bwg_cfg_rx,
790 .getpgtccfgtx = ixgbe_dcbnl_get_pg_tc_cfg_tx,
791 .getpgbwgcfgtx = ixgbe_dcbnl_get_pg_bwg_cfg_tx,
792 .getpgtccfgrx = ixgbe_dcbnl_get_pg_tc_cfg_rx,
793 .getpgbwgcfgrx = ixgbe_dcbnl_get_pg_bwg_cfg_rx,
794 .setpfccfg = ixgbe_dcbnl_set_pfc_cfg,
795 .getpfccfg = ixgbe_dcbnl_get_pfc_cfg,
796 .setall = ixgbe_dcbnl_set_all,
797 .getcap = ixgbe_dcbnl_getcap,
798 .getnumtcs = ixgbe_dcbnl_getnumtcs,
799 .setnumtcs = ixgbe_dcbnl_setnumtcs,
800 .getpfcstate = ixgbe_dcbnl_getpfcstate,
801 .setpfcstate = ixgbe_dcbnl_setpfcstate,
802 .getapp = ixgbe_dcbnl_getapp,
803 .getdcbx = ixgbe_dcbnl_getdcbx,
804 .setdcbx = ixgbe_dcbnl_setdcbx,
805 };
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