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Staging: hv: mousevsc: Cleanup and properly implement reportdesc_callback()
[zen-stable.git] / drivers / net / ixgbe / ixgbe_dcb_nl.c
blob0ace6ce1d0b44271dc9e7ae67cf04db79947f35f
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 /* verify there is something to do, if not then exit */
118 if (!!state != !(adapter->flags & IXGBE_FLAG_DCB_ENABLED))
119 return err;
120
121 if (state > 0) {
122 /* Turn on DCB */
123 if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED)) {
124 e_err(drv, "Enable failed, needs MSI-X\n");
125 err = 1;
126 goto out;
127 }
128
129 adapter->flags |= IXGBE_FLAG_DCB_ENABLED;
130
131 switch (adapter->hw.mac.type) {
132 case ixgbe_mac_82598EB:
133 adapter->last_lfc_mode = adapter->hw.fc.current_mode;
134 adapter->hw.fc.requested_mode = ixgbe_fc_none;
135 break;
136 case ixgbe_mac_82599EB:
137 case ixgbe_mac_X540:
138 adapter->flags &= ~IXGBE_FLAG_FDIR_HASH_CAPABLE;
139 break;
140 default:
141 break;
142 }
143
144 ixgbe_setup_tc(netdev, MAX_TRAFFIC_CLASS);
145 } else {
146 /* Turn off DCB */
147 adapter->hw.fc.requested_mode = adapter->last_lfc_mode;
148 adapter->temp_dcb_cfg.pfc_mode_enable = false;
149 adapter->dcb_cfg.pfc_mode_enable = false;
150 adapter->flags &= ~IXGBE_FLAG_DCB_ENABLED;
151 switch (adapter->hw.mac.type) {
152 case ixgbe_mac_82599EB:
153 case ixgbe_mac_X540:
154 if (!(adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE))
155 adapter->flags |= IXGBE_FLAG_FDIR_HASH_CAPABLE;
156 break;
157 default:
158 break;
159 }
160 ixgbe_setup_tc(netdev, 0);
161 }
162
163 out:
164 return err;
165 }
166
167 static void ixgbe_dcbnl_get_perm_hw_addr(struct net_device *netdev,
168 u8 *perm_addr)
169 {
170 struct ixgbe_adapter *adapter = netdev_priv(netdev);
171 int i, j;
172
173 memset(perm_addr, 0xff, MAX_ADDR_LEN);
174
175 for (i = 0; i < netdev->addr_len; i++)
176 perm_addr[i] = adapter->hw.mac.perm_addr[i];
177
178 switch (adapter->hw.mac.type) {
179 case ixgbe_mac_82599EB:
180 case ixgbe_mac_X540:
181 for (j = 0; j < netdev->addr_len; j++, i++)
182 perm_addr[i] = adapter->hw.mac.san_addr[j];
183 break;
184 default:
185 break;
186 }
187 }
188
189 static void ixgbe_dcbnl_set_pg_tc_cfg_tx(struct net_device *netdev, int tc,
190 u8 prio, u8 bwg_id, u8 bw_pct,
191 u8 up_map)
192 {
193 struct ixgbe_adapter *adapter = netdev_priv(netdev);
194
195 if (prio != DCB_ATTR_VALUE_UNDEFINED)
196 adapter->temp_dcb_cfg.tc_config[tc].path[0].prio_type = prio;
197 if (bwg_id != DCB_ATTR_VALUE_UNDEFINED)
198 adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_id = bwg_id;
199 if (bw_pct != DCB_ATTR_VALUE_UNDEFINED)
200 adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_percent =
201 bw_pct;
202 if (up_map != DCB_ATTR_VALUE_UNDEFINED)
203 adapter->temp_dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap =
204 up_map;
205
206 if ((adapter->temp_dcb_cfg.tc_config[tc].path[0].prio_type !=
207 adapter->dcb_cfg.tc_config[tc].path[0].prio_type) ||
208 (adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_id !=
209 adapter->dcb_cfg.tc_config[tc].path[0].bwg_id) ||
210 (adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_percent !=
211 adapter->dcb_cfg.tc_config[tc].path[0].bwg_percent) ||
212 (adapter->temp_dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap !=
213 adapter->dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap))
214 adapter->dcb_set_bitmap |= BIT_PG_TX;
215 }
216
217 static void ixgbe_dcbnl_set_pg_bwg_cfg_tx(struct net_device *netdev, int bwg_id,
218 u8 bw_pct)
219 {
220 struct ixgbe_adapter *adapter = netdev_priv(netdev);
221
222 adapter->temp_dcb_cfg.bw_percentage[0][bwg_id] = bw_pct;
223
224 if (adapter->temp_dcb_cfg.bw_percentage[0][bwg_id] !=
225 adapter->dcb_cfg.bw_percentage[0][bwg_id])
226 adapter->dcb_set_bitmap |= BIT_PG_TX;
227 }
228
229 static void ixgbe_dcbnl_set_pg_tc_cfg_rx(struct net_device *netdev, int tc,
230 u8 prio, u8 bwg_id, u8 bw_pct,
231 u8 up_map)
232 {
233 struct ixgbe_adapter *adapter = netdev_priv(netdev);
234
235 if (prio != DCB_ATTR_VALUE_UNDEFINED)
236 adapter->temp_dcb_cfg.tc_config[tc].path[1].prio_type = prio;
237 if (bwg_id != DCB_ATTR_VALUE_UNDEFINED)
238 adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_id = bwg_id;
239 if (bw_pct != DCB_ATTR_VALUE_UNDEFINED)
240 adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_percent =
241 bw_pct;
242 if (up_map != DCB_ATTR_VALUE_UNDEFINED)
243 adapter->temp_dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap =
244 up_map;
245
246 if ((adapter->temp_dcb_cfg.tc_config[tc].path[1].prio_type !=
247 adapter->dcb_cfg.tc_config[tc].path[1].prio_type) ||
248 (adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_id !=
249 adapter->dcb_cfg.tc_config[tc].path[1].bwg_id) ||
250 (adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_percent !=
251 adapter->dcb_cfg.tc_config[tc].path[1].bwg_percent) ||
252 (adapter->temp_dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap !=
253 adapter->dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap))
254 adapter->dcb_set_bitmap |= BIT_PG_RX;
255 }
256
257 static void ixgbe_dcbnl_set_pg_bwg_cfg_rx(struct net_device *netdev, int bwg_id,
258 u8 bw_pct)
259 {
260 struct ixgbe_adapter *adapter = netdev_priv(netdev);
261
262 adapter->temp_dcb_cfg.bw_percentage[1][bwg_id] = bw_pct;
263
264 if (adapter->temp_dcb_cfg.bw_percentage[1][bwg_id] !=
265 adapter->dcb_cfg.bw_percentage[1][bwg_id])
266 adapter->dcb_set_bitmap |= BIT_PG_RX;
267 }
268
269 static void ixgbe_dcbnl_get_pg_tc_cfg_tx(struct net_device *netdev, int tc,
270 u8 *prio, u8 *bwg_id, u8 *bw_pct,
271 u8 *up_map)
272 {
273 struct ixgbe_adapter *adapter = netdev_priv(netdev);
274
275 *prio = adapter->dcb_cfg.tc_config[tc].path[0].prio_type;
276 *bwg_id = adapter->dcb_cfg.tc_config[tc].path[0].bwg_id;
277 *bw_pct = adapter->dcb_cfg.tc_config[tc].path[0].bwg_percent;
278 *up_map = adapter->dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap;
279 }
280
281 static void ixgbe_dcbnl_get_pg_bwg_cfg_tx(struct net_device *netdev, int bwg_id,
282 u8 *bw_pct)
283 {
284 struct ixgbe_adapter *adapter = netdev_priv(netdev);
285
286 *bw_pct = adapter->dcb_cfg.bw_percentage[0][bwg_id];
287 }
288
289 static void ixgbe_dcbnl_get_pg_tc_cfg_rx(struct net_device *netdev, int tc,
290 u8 *prio, u8 *bwg_id, u8 *bw_pct,
291 u8 *up_map)
292 {
293 struct ixgbe_adapter *adapter = netdev_priv(netdev);
294
295 *prio = adapter->dcb_cfg.tc_config[tc].path[1].prio_type;
296 *bwg_id = adapter->dcb_cfg.tc_config[tc].path[1].bwg_id;
297 *bw_pct = adapter->dcb_cfg.tc_config[tc].path[1].bwg_percent;
298 *up_map = adapter->dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap;
299 }
300
301 static void ixgbe_dcbnl_get_pg_bwg_cfg_rx(struct net_device *netdev, int bwg_id,
302 u8 *bw_pct)
303 {
304 struct ixgbe_adapter *adapter = netdev_priv(netdev);
305
306 *bw_pct = adapter->dcb_cfg.bw_percentage[1][bwg_id];
307 }
308
309 static void ixgbe_dcbnl_set_pfc_cfg(struct net_device *netdev, int priority,
310 u8 setting)
311 {
312 struct ixgbe_adapter *adapter = netdev_priv(netdev);
313
314 adapter->temp_dcb_cfg.tc_config[priority].dcb_pfc = setting;
315 if (adapter->temp_dcb_cfg.tc_config[priority].dcb_pfc !=
316 adapter->dcb_cfg.tc_config[priority].dcb_pfc) {
317 adapter->dcb_set_bitmap |= BIT_PFC;
318 adapter->temp_dcb_cfg.pfc_mode_enable = true;
319 }
320 }
321
322 static void ixgbe_dcbnl_get_pfc_cfg(struct net_device *netdev, int priority,
323 u8 *setting)
324 {
325 struct ixgbe_adapter *adapter = netdev_priv(netdev);
326
327 *setting = adapter->dcb_cfg.tc_config[priority].dcb_pfc;
328 }
329
330 static u8 ixgbe_dcbnl_set_all(struct net_device *netdev)
331 {
332 struct ixgbe_adapter *adapter = netdev_priv(netdev);
333 int ret;
334 #ifdef IXGBE_FCOE
335 struct dcb_app app = {
336 .selector = DCB_APP_IDTYPE_ETHTYPE,
337 .protocol = ETH_P_FCOE,
338 };
339 u8 up = dcb_getapp(netdev, &app);
340 #endif
341
342 ret = ixgbe_copy_dcb_cfg(&adapter->temp_dcb_cfg, &adapter->dcb_cfg,
343 MAX_TRAFFIC_CLASS);
344 if (ret)
345 return DCB_NO_HW_CHG;
346
347 #ifdef IXGBE_FCOE
348 if (up && (up != (1 << adapter->fcoe.up)))
349 adapter->dcb_set_bitmap |= BIT_APP_UPCHG;
350
351 /*
352 * Only take down the adapter if an app change occurred. FCoE
353 * may shuffle tx rings in this case and this can not be done
354 * without a reset currently.
355 */
356 if (adapter->dcb_set_bitmap & BIT_APP_UPCHG) {
357 while (test_and_set_bit(__IXGBE_RESETTING, &adapter->state))
358 usleep_range(1000, 2000);
359
360 adapter->fcoe.up = ffs(up) - 1;
361
362 if (netif_running(netdev))
363 netdev->netdev_ops->ndo_stop(netdev);
364 ixgbe_clear_interrupt_scheme(adapter);
365 }
366 #endif
367
368 if (adapter->dcb_cfg.pfc_mode_enable) {
369 switch (adapter->hw.mac.type) {
370 case ixgbe_mac_82599EB:
371 case ixgbe_mac_X540:
372 if (adapter->hw.fc.current_mode != ixgbe_fc_pfc)
373 adapter->last_lfc_mode =
374 adapter->hw.fc.current_mode;
375 break;
376 default:
377 break;
378 }
379 adapter->hw.fc.requested_mode = ixgbe_fc_pfc;
380 } else {
381 switch (adapter->hw.mac.type) {
382 case ixgbe_mac_82598EB:
383 adapter->hw.fc.requested_mode = ixgbe_fc_none;
384 break;
385 case ixgbe_mac_82599EB:
386 case ixgbe_mac_X540:
387 adapter->hw.fc.requested_mode = adapter->last_lfc_mode;
388 break;
389 default:
390 break;
391 }
392 }
393
394 #ifdef IXGBE_FCOE
395 if (adapter->dcb_set_bitmap & BIT_APP_UPCHG) {
396 ixgbe_init_interrupt_scheme(adapter);
397 if (netif_running(netdev))
398 netdev->netdev_ops->ndo_open(netdev);
399 ret = DCB_HW_CHG_RST;
400 }
401 #endif
402
403 if (adapter->dcb_set_bitmap & BIT_PFC) {
404 u8 pfc_en;
405 ixgbe_dcb_unpack_pfc(&adapter->dcb_cfg, &pfc_en);
406 ixgbe_dcb_hw_pfc_config(&adapter->hw, pfc_en);
407 ret = DCB_HW_CHG;
408 }
409
410 if (adapter->dcb_set_bitmap & (BIT_PG_TX|BIT_PG_RX)) {
411 u16 refill[MAX_TRAFFIC_CLASS], max[MAX_TRAFFIC_CLASS];
412 u8 bwg_id[MAX_TRAFFIC_CLASS], prio_type[MAX_TRAFFIC_CLASS];
413 /* Priority to TC mapping in CEE case default to 1:1 */
414 u8 prio_tc[MAX_TRAFFIC_CLASS] = {0, 1, 2, 3, 4, 5, 6, 7};
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, prio_tc);
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
452 switch (capid) {
453 case DCB_CAP_ATTR_PG:
454 *cap = true;
455 break;
456 case DCB_CAP_ATTR_PFC:
457 *cap = true;
458 break;
459 case DCB_CAP_ATTR_UP2TC:
460 *cap = false;
461 break;
462 case DCB_CAP_ATTR_PG_TCS:
463 *cap = 0x80;
464 break;
465 case DCB_CAP_ATTR_PFC_TCS:
466 *cap = 0x80;
467 break;
468 case DCB_CAP_ATTR_GSP:
469 *cap = true;
470 break;
471 case DCB_CAP_ATTR_BCN:
472 *cap = false;
473 break;
474 case DCB_CAP_ATTR_DCBX:
475 *cap = adapter->dcbx_cap;
476 break;
477 default:
478 *cap = false;
479 break;
480 }
481
482 return 0;
483 }
484
485 static u8 ixgbe_dcbnl_getnumtcs(struct net_device *netdev, int tcid, u8 *num)
486 {
487 struct ixgbe_adapter *adapter = netdev_priv(netdev);
488 u8 rval = 0;
489
490 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
491 switch (tcid) {
492 case DCB_NUMTCS_ATTR_PG:
493 *num = MAX_TRAFFIC_CLASS;
494 break;
495 case DCB_NUMTCS_ATTR_PFC:
496 *num = MAX_TRAFFIC_CLASS;
497 break;
498 default:
499 rval = -EINVAL;
500 break;
501 }
502 } else {
503 rval = -EINVAL;
504 }
505
506 return rval;
507 }
508
509 static u8 ixgbe_dcbnl_setnumtcs(struct net_device *netdev, int tcid, u8 num)
510 {
511 return -EINVAL;
512 }
513
514 static u8 ixgbe_dcbnl_getpfcstate(struct net_device *netdev)
515 {
516 struct ixgbe_adapter *adapter = netdev_priv(netdev);
517
518 return adapter->dcb_cfg.pfc_mode_enable;
519 }
520
521 static void ixgbe_dcbnl_setpfcstate(struct net_device *netdev, u8 state)
522 {
523 struct ixgbe_adapter *adapter = netdev_priv(netdev);
524
525 adapter->temp_dcb_cfg.pfc_mode_enable = state;
526 if (adapter->temp_dcb_cfg.pfc_mode_enable !=
527 adapter->dcb_cfg.pfc_mode_enable)
528 adapter->dcb_set_bitmap |= BIT_PFC;
529 }
530
531 /**
532 * ixgbe_dcbnl_getapp - retrieve the DCBX application user priority
533 * @netdev : the corresponding netdev
534 * @idtype : identifies the id as ether type or TCP/UDP port number
535 * @id: id is either ether type or TCP/UDP port number
536 *
537 * Returns : on success, returns a non-zero 802.1p user priority bitmap
538 * otherwise returns 0 as the invalid user priority bitmap to indicate an
539 * error.
540 */
541 static u8 ixgbe_dcbnl_getapp(struct net_device *netdev, u8 idtype, u16 id)
542 {
543 struct ixgbe_adapter *adapter = netdev_priv(netdev);
544 struct dcb_app app = {
545 .selector = idtype,
546 .protocol = id,
547 };
548
549 if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE))
550 return 0;
551
552 return dcb_getapp(netdev, &app);
553 }
554
555 static int ixgbe_dcbnl_ieee_getets(struct net_device *dev,
556 struct ieee_ets *ets)
557 {
558 struct ixgbe_adapter *adapter = netdev_priv(dev);
559 struct ieee_ets *my_ets = adapter->ixgbe_ieee_ets;
560
561 /* No IEEE PFC settings available */
562 if (!my_ets)
563 return -EINVAL;
564
565 ets->ets_cap = MAX_TRAFFIC_CLASS;
566 ets->cbs = my_ets->cbs;
567 memcpy(ets->tc_tx_bw, my_ets->tc_tx_bw, sizeof(ets->tc_tx_bw));
568 memcpy(ets->tc_rx_bw, my_ets->tc_rx_bw, sizeof(ets->tc_rx_bw));
569 memcpy(ets->tc_tsa, my_ets->tc_tsa, sizeof(ets->tc_tsa));
570 memcpy(ets->prio_tc, my_ets->prio_tc, sizeof(ets->prio_tc));
571 return 0;
572 }
573
574 static int ixgbe_dcbnl_ieee_setets(struct net_device *dev,
575 struct ieee_ets *ets)
576 {
577 struct ixgbe_adapter *adapter = netdev_priv(dev);
578 __u16 refill[IEEE_8021QAZ_MAX_TCS], max[IEEE_8021QAZ_MAX_TCS];
579 __u8 prio_type[IEEE_8021QAZ_MAX_TCS];
580 int max_frame = dev->mtu + ETH_HLEN + ETH_FCS_LEN;
581 int i, err;
582 __u64 *p = (__u64 *) ets->prio_tc;
583 /* naively give each TC a bwg to map onto CEE hardware */
584 __u8 bwg_id[IEEE_8021QAZ_MAX_TCS] = {0, 1, 2, 3, 4, 5, 6, 7};
585
586 if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
587 return -EINVAL;
588
589 if (!adapter->ixgbe_ieee_ets) {
590 adapter->ixgbe_ieee_ets = kmalloc(sizeof(struct ieee_ets),
591 GFP_KERNEL);
592 if (!adapter->ixgbe_ieee_ets)
593 return -ENOMEM;
594 }
595
596 memcpy(adapter->ixgbe_ieee_ets, ets, sizeof(*adapter->ixgbe_ieee_ets));
597
598 /* Map TSA onto CEE prio type */
599 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
600 switch (ets->tc_tsa[i]) {
601 case IEEE_8021QAZ_TSA_STRICT:
602 prio_type[i] = 2;
603 break;
604 case IEEE_8021QAZ_TSA_ETS:
605 prio_type[i] = 0;
606 break;
607 default:
608 /* Hardware only supports priority strict or
609 * ETS transmission selection algorithms if
610 * we receive some other value from dcbnl
611 * throw an error
612 */
613 return -EINVAL;
614 }
615 }
616
617 if (*p)
618 ixgbe_dcbnl_set_state(dev, 1);
619 else
620 ixgbe_dcbnl_set_state(dev, 0);
621
622 ixgbe_ieee_credits(ets->tc_tx_bw, refill, max, max_frame);
623 err = ixgbe_dcb_hw_ets_config(&adapter->hw, refill, max,
624 bwg_id, prio_type, ets->prio_tc);
625 return err;
626 }
627
628 static int ixgbe_dcbnl_ieee_getpfc(struct net_device *dev,
629 struct ieee_pfc *pfc)
630 {
631 struct ixgbe_adapter *adapter = netdev_priv(dev);
632 struct ieee_pfc *my_pfc = adapter->ixgbe_ieee_pfc;
633 int i;
634
635 /* No IEEE PFC settings available */
636 if (!my_pfc)
637 return -EINVAL;
638
639 pfc->pfc_cap = MAX_TRAFFIC_CLASS;
640 pfc->pfc_en = my_pfc->pfc_en;
641 pfc->mbc = my_pfc->mbc;
642 pfc->delay = my_pfc->delay;
643
644 for (i = 0; i < MAX_TRAFFIC_CLASS; i++) {
645 pfc->requests[i] = adapter->stats.pxoffrxc[i];
646 pfc->indications[i] = adapter->stats.pxofftxc[i];
647 }
648
649 return 0;
650 }
651
652 static int ixgbe_dcbnl_ieee_setpfc(struct net_device *dev,
653 struct ieee_pfc *pfc)
654 {
655 struct ixgbe_adapter *adapter = netdev_priv(dev);
656 int err;
657
658 if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
659 return -EINVAL;
660
661 if (!adapter->ixgbe_ieee_pfc) {
662 adapter->ixgbe_ieee_pfc = kmalloc(sizeof(struct ieee_pfc),
663 GFP_KERNEL);
664 if (!adapter->ixgbe_ieee_pfc)
665 return -ENOMEM;
666 }
667
668 memcpy(adapter->ixgbe_ieee_pfc, pfc, sizeof(*adapter->ixgbe_ieee_pfc));
669 err = ixgbe_dcb_hw_pfc_config(&adapter->hw, pfc->pfc_en);
670 return err;
671 }
672
673 #ifdef IXGBE_FCOE
674 static void ixgbe_dcbnl_devreset(struct net_device *dev)
675 {
676 struct ixgbe_adapter *adapter = netdev_priv(dev);
677
678 if (netif_running(dev))
679 dev->netdev_ops->ndo_stop(dev);
680
681 ixgbe_clear_interrupt_scheme(adapter);
682 ixgbe_init_interrupt_scheme(adapter);
683
684 if (netif_running(dev))
685 dev->netdev_ops->ndo_open(dev);
686 }
687 #endif
688
689 static int ixgbe_dcbnl_ieee_setapp(struct net_device *dev,
690 struct dcb_app *app)
691 {
692 struct ixgbe_adapter *adapter = netdev_priv(dev);
693 int err = -EINVAL;
694
695 if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
696 return err;
697
698 err = dcb_ieee_setapp(dev, app);
699
700 #ifdef IXGBE_FCOE
701 if (!err && app->selector == IEEE_8021QAZ_APP_SEL_ETHERTYPE &&
702 app->protocol == ETH_P_FCOE) {
703 u8 app_mask = dcb_ieee_getapp_mask(dev, app);
704
705 if (app_mask & (1 << adapter->fcoe.up))
706 return err;
707
708 adapter->fcoe.up = app->priority;
709 ixgbe_dcbnl_devreset(dev);
710 }
711 #endif
712 return 0;
713 }
714
715 static int ixgbe_dcbnl_ieee_delapp(struct net_device *dev,
716 struct dcb_app *app)
717 {
718 struct ixgbe_adapter *adapter = netdev_priv(dev);
719 int err;
720
721 if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
722 return -EINVAL;
723
724 err = dcb_ieee_delapp(dev, app);
725
726 #ifdef IXGBE_FCOE
727 if (!err && app->selector == IEEE_8021QAZ_APP_SEL_ETHERTYPE &&
728 app->protocol == ETH_P_FCOE) {
729 u8 app_mask = dcb_ieee_getapp_mask(dev, app);
730
731 if (app_mask & (1 << adapter->fcoe.up))
732 return err;
733
734 adapter->fcoe.up = app_mask ?
735 ffs(app_mask) - 1 : IXGBE_FCOE_DEFTC;
736 ixgbe_dcbnl_devreset(dev);
737 }
738 #endif
739 return err;
740 }
741
742 static u8 ixgbe_dcbnl_getdcbx(struct net_device *dev)
743 {
744 struct ixgbe_adapter *adapter = netdev_priv(dev);
745 return adapter->dcbx_cap;
746 }
747
748 static u8 ixgbe_dcbnl_setdcbx(struct net_device *dev, u8 mode)
749 {
750 struct ixgbe_adapter *adapter = netdev_priv(dev);
751 struct ieee_ets ets = {0};
752 struct ieee_pfc pfc = {0};
753
754 /* no support for LLD_MANAGED modes or CEE+IEEE */
755 if ((mode & DCB_CAP_DCBX_LLD_MANAGED) ||
756 ((mode & DCB_CAP_DCBX_VER_IEEE) && (mode & DCB_CAP_DCBX_VER_CEE)) ||
757 !(mode & DCB_CAP_DCBX_HOST))
758 return 1;
759
760 if (mode == adapter->dcbx_cap)
761 return 0;
762
763 adapter->dcbx_cap = mode;
764
765 /* ETS and PFC defaults */
766 ets.ets_cap = 8;
767 pfc.pfc_cap = 8;
768
769 if (mode & DCB_CAP_DCBX_VER_IEEE) {
770 ixgbe_dcbnl_ieee_setets(dev, &ets);
771 ixgbe_dcbnl_ieee_setpfc(dev, &pfc);
772 } else if (mode & DCB_CAP_DCBX_VER_CEE) {
773 adapter->dcb_set_bitmap |= (BIT_PFC & BIT_PG_TX & BIT_PG_RX);
774 ixgbe_dcbnl_set_all(dev);
775 } else {
776 /* Drop into single TC mode strict priority as this
777 * indicates CEE and IEEE versions are disabled
778 */
779 ixgbe_dcbnl_ieee_setets(dev, &ets);
780 ixgbe_dcbnl_ieee_setpfc(dev, &pfc);
781 ixgbe_dcbnl_set_state(dev, 0);
782 }
783
784 return 0;
785 }
786
787 const struct dcbnl_rtnl_ops dcbnl_ops = {
788 .ieee_getets = ixgbe_dcbnl_ieee_getets,
789 .ieee_setets = ixgbe_dcbnl_ieee_setets,
790 .ieee_getpfc = ixgbe_dcbnl_ieee_getpfc,
791 .ieee_setpfc = ixgbe_dcbnl_ieee_setpfc,
792 .ieee_setapp = ixgbe_dcbnl_ieee_setapp,
793 .ieee_delapp = ixgbe_dcbnl_ieee_delapp,
794 .getstate = ixgbe_dcbnl_get_state,
795 .setstate = ixgbe_dcbnl_set_state,
796 .getpermhwaddr = ixgbe_dcbnl_get_perm_hw_addr,
797 .setpgtccfgtx = ixgbe_dcbnl_set_pg_tc_cfg_tx,
798 .setpgbwgcfgtx = ixgbe_dcbnl_set_pg_bwg_cfg_tx,
799 .setpgtccfgrx = ixgbe_dcbnl_set_pg_tc_cfg_rx,
800 .setpgbwgcfgrx = ixgbe_dcbnl_set_pg_bwg_cfg_rx,
801 .getpgtccfgtx = ixgbe_dcbnl_get_pg_tc_cfg_tx,
802 .getpgbwgcfgtx = ixgbe_dcbnl_get_pg_bwg_cfg_tx,
803 .getpgtccfgrx = ixgbe_dcbnl_get_pg_tc_cfg_rx,
804 .getpgbwgcfgrx = ixgbe_dcbnl_get_pg_bwg_cfg_rx,
805 .setpfccfg = ixgbe_dcbnl_set_pfc_cfg,
806 .getpfccfg = ixgbe_dcbnl_get_pfc_cfg,
807 .setall = ixgbe_dcbnl_set_all,
808 .getcap = ixgbe_dcbnl_getcap,
809 .getnumtcs = ixgbe_dcbnl_getnumtcs,
810 .setnumtcs = ixgbe_dcbnl_setnumtcs,
811 .getpfcstate = ixgbe_dcbnl_getpfcstate,
812 .setpfcstate = ixgbe_dcbnl_setpfcstate,
813 .getapp = ixgbe_dcbnl_getapp,
814 .getdcbx = ixgbe_dcbnl_getdcbx,
815 .setdcbx = ixgbe_dcbnl_setdcbx,
816 };