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Input: wacom - fix touch parsing on newer Bamboos
[linux-btrfs-devel.git] / drivers / net / ixgbe / ixgbe_dcb_nl.c
blob5e7ed225851a587f02ca76a6744e3589e3bcfbe2
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 switch (adapter->hw.mac.type) {
133 case ixgbe_mac_82598EB:
134 adapter->last_lfc_mode = adapter->hw.fc.current_mode;
135 adapter->hw.fc.requested_mode = ixgbe_fc_none;
136 break;
137 case ixgbe_mac_82599EB:
138 case ixgbe_mac_X540:
139 adapter->flags &= ~IXGBE_FLAG_FDIR_HASH_CAPABLE;
140 adapter->flags &= ~IXGBE_FLAG_FDIR_PERFECT_CAPABLE;
141 break;
142 default:
143 break;
144 }
145
146 adapter->flags |= IXGBE_FLAG_DCB_ENABLED;
147 if (!netdev_get_num_tc(netdev))
148 ixgbe_setup_tc(netdev, MAX_TRAFFIC_CLASS);
149
150 ixgbe_init_interrupt_scheme(adapter);
151 if (netif_running(netdev))
152 netdev->netdev_ops->ndo_open(netdev);
153 } else {
154 /* Turn off DCB */
155 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
156 if (netif_running(netdev))
157 netdev->netdev_ops->ndo_stop(netdev);
158 ixgbe_clear_interrupt_scheme(adapter);
159
160 adapter->hw.fc.requested_mode = adapter->last_lfc_mode;
161 adapter->temp_dcb_cfg.pfc_mode_enable = false;
162 adapter->dcb_cfg.pfc_mode_enable = false;
163 adapter->flags &= ~IXGBE_FLAG_DCB_ENABLED;
164 switch (adapter->hw.mac.type) {
165 case ixgbe_mac_82599EB:
166 case ixgbe_mac_X540:
167 adapter->flags |= IXGBE_FLAG_FDIR_HASH_CAPABLE;
168 break;
169 default:
170 break;
171 }
172
173 ixgbe_setup_tc(netdev, 0);
174
175 ixgbe_init_interrupt_scheme(adapter);
176 if (netif_running(netdev))
177 netdev->netdev_ops->ndo_open(netdev);
178 }
179 }
180 out:
181 return err;
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 if ((adapter->temp_dcb_cfg.tc_config[tc].path[0].prio_type !=
224 adapter->dcb_cfg.tc_config[tc].path[0].prio_type) ||
225 (adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_id !=
226 adapter->dcb_cfg.tc_config[tc].path[0].bwg_id) ||
227 (adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_percent !=
228 adapter->dcb_cfg.tc_config[tc].path[0].bwg_percent) ||
229 (adapter->temp_dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap !=
230 adapter->dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap))
231 adapter->dcb_set_bitmap |= BIT_PG_TX;
232 }
233
234 static void ixgbe_dcbnl_set_pg_bwg_cfg_tx(struct net_device *netdev, int bwg_id,
235 u8 bw_pct)
236 {
237 struct ixgbe_adapter *adapter = netdev_priv(netdev);
238
239 adapter->temp_dcb_cfg.bw_percentage[0][bwg_id] = bw_pct;
240
241 if (adapter->temp_dcb_cfg.bw_percentage[0][bwg_id] !=
242 adapter->dcb_cfg.bw_percentage[0][bwg_id])
243 adapter->dcb_set_bitmap |= BIT_PG_TX;
244 }
245
246 static void ixgbe_dcbnl_set_pg_tc_cfg_rx(struct net_device *netdev, int tc,
247 u8 prio, u8 bwg_id, u8 bw_pct,
248 u8 up_map)
249 {
250 struct ixgbe_adapter *adapter = netdev_priv(netdev);
251
252 if (prio != DCB_ATTR_VALUE_UNDEFINED)
253 adapter->temp_dcb_cfg.tc_config[tc].path[1].prio_type = prio;
254 if (bwg_id != DCB_ATTR_VALUE_UNDEFINED)
255 adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_id = bwg_id;
256 if (bw_pct != DCB_ATTR_VALUE_UNDEFINED)
257 adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_percent =
258 bw_pct;
259 if (up_map != DCB_ATTR_VALUE_UNDEFINED)
260 adapter->temp_dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap =
261 up_map;
262
263 if ((adapter->temp_dcb_cfg.tc_config[tc].path[1].prio_type !=
264 adapter->dcb_cfg.tc_config[tc].path[1].prio_type) ||
265 (adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_id !=
266 adapter->dcb_cfg.tc_config[tc].path[1].bwg_id) ||
267 (adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_percent !=
268 adapter->dcb_cfg.tc_config[tc].path[1].bwg_percent) ||
269 (adapter->temp_dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap !=
270 adapter->dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap))
271 adapter->dcb_set_bitmap |= BIT_PG_RX;
272 }
273
274 static void ixgbe_dcbnl_set_pg_bwg_cfg_rx(struct net_device *netdev, int bwg_id,
275 u8 bw_pct)
276 {
277 struct ixgbe_adapter *adapter = netdev_priv(netdev);
278
279 adapter->temp_dcb_cfg.bw_percentage[1][bwg_id] = bw_pct;
280
281 if (adapter->temp_dcb_cfg.bw_percentage[1][bwg_id] !=
282 adapter->dcb_cfg.bw_percentage[1][bwg_id])
283 adapter->dcb_set_bitmap |= BIT_PG_RX;
284 }
285
286 static void ixgbe_dcbnl_get_pg_tc_cfg_tx(struct net_device *netdev, int tc,
287 u8 *prio, u8 *bwg_id, u8 *bw_pct,
288 u8 *up_map)
289 {
290 struct ixgbe_adapter *adapter = netdev_priv(netdev);
291
292 *prio = adapter->dcb_cfg.tc_config[tc].path[0].prio_type;
293 *bwg_id = adapter->dcb_cfg.tc_config[tc].path[0].bwg_id;
294 *bw_pct = adapter->dcb_cfg.tc_config[tc].path[0].bwg_percent;
295 *up_map = adapter->dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap;
296 }
297
298 static void ixgbe_dcbnl_get_pg_bwg_cfg_tx(struct net_device *netdev, int bwg_id,
299 u8 *bw_pct)
300 {
301 struct ixgbe_adapter *adapter = netdev_priv(netdev);
302
303 *bw_pct = adapter->dcb_cfg.bw_percentage[0][bwg_id];
304 }
305
306 static void ixgbe_dcbnl_get_pg_tc_cfg_rx(struct net_device *netdev, int tc,
307 u8 *prio, u8 *bwg_id, u8 *bw_pct,
308 u8 *up_map)
309 {
310 struct ixgbe_adapter *adapter = netdev_priv(netdev);
311
312 *prio = adapter->dcb_cfg.tc_config[tc].path[1].prio_type;
313 *bwg_id = adapter->dcb_cfg.tc_config[tc].path[1].bwg_id;
314 *bw_pct = adapter->dcb_cfg.tc_config[tc].path[1].bwg_percent;
315 *up_map = adapter->dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap;
316 }
317
318 static void ixgbe_dcbnl_get_pg_bwg_cfg_rx(struct net_device *netdev, int bwg_id,
319 u8 *bw_pct)
320 {
321 struct ixgbe_adapter *adapter = netdev_priv(netdev);
322
323 *bw_pct = adapter->dcb_cfg.bw_percentage[1][bwg_id];
324 }
325
326 static void ixgbe_dcbnl_set_pfc_cfg(struct net_device *netdev, int priority,
327 u8 setting)
328 {
329 struct ixgbe_adapter *adapter = netdev_priv(netdev);
330
331 adapter->temp_dcb_cfg.tc_config[priority].dcb_pfc = setting;
332 if (adapter->temp_dcb_cfg.tc_config[priority].dcb_pfc !=
333 adapter->dcb_cfg.tc_config[priority].dcb_pfc) {
334 adapter->dcb_set_bitmap |= BIT_PFC;
335 adapter->temp_dcb_cfg.pfc_mode_enable = true;
336 }
337 }
338
339 static void ixgbe_dcbnl_get_pfc_cfg(struct net_device *netdev, int priority,
340 u8 *setting)
341 {
342 struct ixgbe_adapter *adapter = netdev_priv(netdev);
343
344 *setting = adapter->dcb_cfg.tc_config[priority].dcb_pfc;
345 }
346
347 static u8 ixgbe_dcbnl_set_all(struct net_device *netdev)
348 {
349 struct ixgbe_adapter *adapter = netdev_priv(netdev);
350 struct dcb_app app = {
351 .selector = DCB_APP_IDTYPE_ETHTYPE,
352 .protocol = ETH_P_FCOE,
353 };
354 u8 up = dcb_getapp(netdev, &app);
355 int ret;
356
357 ret = ixgbe_copy_dcb_cfg(&adapter->temp_dcb_cfg, &adapter->dcb_cfg,
358 MAX_TRAFFIC_CLASS);
359 if (ret)
360 return DCB_NO_HW_CHG;
361
362 /* In IEEE mode app data must be parsed into DCBX format for
363 * hardware routines.
364 */
365 if (adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE)
366 up = (1 << up);
367
368 #ifdef IXGBE_FCOE
369 if (up && (up != (1 << adapter->fcoe.up)))
370 adapter->dcb_set_bitmap |= BIT_APP_UPCHG;
371
372 /*
373 * Only take down the adapter if an app change occurred. FCoE
374 * may shuffle tx rings in this case and this can not be done
375 * without a reset currently.
376 */
377 if (adapter->dcb_set_bitmap & BIT_APP_UPCHG) {
378 while (test_and_set_bit(__IXGBE_RESETTING, &adapter->state))
379 usleep_range(1000, 2000);
380
381 ixgbe_fcoe_setapp(adapter, up);
382
383 if (netif_running(netdev))
384 netdev->netdev_ops->ndo_stop(netdev);
385 ixgbe_clear_interrupt_scheme(adapter);
386 }
387 #endif
388
389 if (adapter->dcb_cfg.pfc_mode_enable) {
390 switch (adapter->hw.mac.type) {
391 case ixgbe_mac_82599EB:
392 case ixgbe_mac_X540:
393 if (adapter->hw.fc.current_mode != ixgbe_fc_pfc)
394 adapter->last_lfc_mode =
395 adapter->hw.fc.current_mode;
396 break;
397 default:
398 break;
399 }
400 adapter->hw.fc.requested_mode = ixgbe_fc_pfc;
401 } else {
402 switch (adapter->hw.mac.type) {
403 case ixgbe_mac_82598EB:
404 adapter->hw.fc.requested_mode = ixgbe_fc_none;
405 break;
406 case ixgbe_mac_82599EB:
407 case ixgbe_mac_X540:
408 adapter->hw.fc.requested_mode = adapter->last_lfc_mode;
409 break;
410 default:
411 break;
412 }
413 }
414
415 #ifdef IXGBE_FCOE
416 if (adapter->dcb_set_bitmap & BIT_APP_UPCHG) {
417 ixgbe_init_interrupt_scheme(adapter);
418 if (netif_running(netdev))
419 netdev->netdev_ops->ndo_open(netdev);
420 ret = DCB_HW_CHG_RST;
421 }
422 #endif
423
424 if (adapter->dcb_set_bitmap & BIT_PFC) {
425 u8 pfc_en;
426 ixgbe_dcb_unpack_pfc(&adapter->dcb_cfg, &pfc_en);
427 ixgbe_dcb_hw_pfc_config(&adapter->hw, pfc_en);
428 ret = DCB_HW_CHG;
429 }
430
431 if (adapter->dcb_set_bitmap & (BIT_PG_TX|BIT_PG_RX)) {
432 u16 refill[MAX_TRAFFIC_CLASS], max[MAX_TRAFFIC_CLASS];
433 u8 bwg_id[MAX_TRAFFIC_CLASS], prio_type[MAX_TRAFFIC_CLASS];
434 /* Priority to TC mapping in CEE case default to 1:1 */
435 u8 prio_tc[MAX_TRAFFIC_CLASS] = {0, 1, 2, 3, 4, 5, 6, 7};
436 int max_frame = adapter->netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
437
438 #ifdef CONFIG_FCOE
439 if (adapter->netdev->features & NETIF_F_FCOE_MTU)
440 max_frame = max(max_frame, IXGBE_FCOE_JUMBO_FRAME_SIZE);
441 #endif
442
443 ixgbe_dcb_calculate_tc_credits(&adapter->hw, &adapter->dcb_cfg,
444 max_frame, DCB_TX_CONFIG);
445 ixgbe_dcb_calculate_tc_credits(&adapter->hw, &adapter->dcb_cfg,
446 max_frame, DCB_RX_CONFIG);
447
448 ixgbe_dcb_unpack_refill(&adapter->dcb_cfg,
449 DCB_TX_CONFIG, refill);
450 ixgbe_dcb_unpack_max(&adapter->dcb_cfg, max);
451 ixgbe_dcb_unpack_bwgid(&adapter->dcb_cfg,
452 DCB_TX_CONFIG, bwg_id);
453 ixgbe_dcb_unpack_prio(&adapter->dcb_cfg,
454 DCB_TX_CONFIG, prio_type);
455
456 ixgbe_dcb_hw_ets_config(&adapter->hw, refill, max,
457 bwg_id, prio_type, prio_tc);
458 }
459
460 if (adapter->dcb_cfg.pfc_mode_enable)
461 adapter->hw.fc.current_mode = ixgbe_fc_pfc;
462
463 if (adapter->dcb_set_bitmap & BIT_APP_UPCHG)
464 clear_bit(__IXGBE_RESETTING, &adapter->state);
465 adapter->dcb_set_bitmap = 0x00;
466 return ret;
467 }
468
469 static u8 ixgbe_dcbnl_getcap(struct net_device *netdev, int capid, u8 *cap)
470 {
471 struct ixgbe_adapter *adapter = netdev_priv(netdev);
472
473 switch (capid) {
474 case DCB_CAP_ATTR_PG:
475 *cap = true;
476 break;
477 case DCB_CAP_ATTR_PFC:
478 *cap = true;
479 break;
480 case DCB_CAP_ATTR_UP2TC:
481 *cap = false;
482 break;
483 case DCB_CAP_ATTR_PG_TCS:
484 *cap = 0x80;
485 break;
486 case DCB_CAP_ATTR_PFC_TCS:
487 *cap = 0x80;
488 break;
489 case DCB_CAP_ATTR_GSP:
490 *cap = true;
491 break;
492 case DCB_CAP_ATTR_BCN:
493 *cap = false;
494 break;
495 case DCB_CAP_ATTR_DCBX:
496 *cap = adapter->dcbx_cap;
497 break;
498 default:
499 *cap = false;
500 break;
501 }
502
503 return 0;
504 }
505
506 static u8 ixgbe_dcbnl_getnumtcs(struct net_device *netdev, int tcid, u8 *num)
507 {
508 struct ixgbe_adapter *adapter = netdev_priv(netdev);
509 u8 rval = 0;
510
511 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
512 switch (tcid) {
513 case DCB_NUMTCS_ATTR_PG:
514 *num = MAX_TRAFFIC_CLASS;
515 break;
516 case DCB_NUMTCS_ATTR_PFC:
517 *num = MAX_TRAFFIC_CLASS;
518 break;
519 default:
520 rval = -EINVAL;
521 break;
522 }
523 } else {
524 rval = -EINVAL;
525 }
526
527 return rval;
528 }
529
530 static u8 ixgbe_dcbnl_setnumtcs(struct net_device *netdev, int tcid, u8 num)
531 {
532 return -EINVAL;
533 }
534
535 static u8 ixgbe_dcbnl_getpfcstate(struct net_device *netdev)
536 {
537 struct ixgbe_adapter *adapter = netdev_priv(netdev);
538
539 return adapter->dcb_cfg.pfc_mode_enable;
540 }
541
542 static void ixgbe_dcbnl_setpfcstate(struct net_device *netdev, u8 state)
543 {
544 struct ixgbe_adapter *adapter = netdev_priv(netdev);
545
546 adapter->temp_dcb_cfg.pfc_mode_enable = state;
547 if (adapter->temp_dcb_cfg.pfc_mode_enable !=
548 adapter->dcb_cfg.pfc_mode_enable)
549 adapter->dcb_set_bitmap |= BIT_PFC;
550 }
551
552 /**
553 * ixgbe_dcbnl_getapp - retrieve the DCBX application user priority
554 * @netdev : the corresponding netdev
555 * @idtype : identifies the id as ether type or TCP/UDP port number
556 * @id: id is either ether type or TCP/UDP port number
557 *
558 * Returns : on success, returns a non-zero 802.1p user priority bitmap
559 * otherwise returns 0 as the invalid user priority bitmap to indicate an
560 * error.
561 */
562 static u8 ixgbe_dcbnl_getapp(struct net_device *netdev, u8 idtype, u16 id)
563 {
564 struct ixgbe_adapter *adapter = netdev_priv(netdev);
565 struct dcb_app app = {
566 .selector = idtype,
567 .protocol = id,
568 };
569
570 if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE))
571 return 0;
572
573 return dcb_getapp(netdev, &app);
574 }
575
576 static int ixgbe_dcbnl_ieee_getets(struct net_device *dev,
577 struct ieee_ets *ets)
578 {
579 struct ixgbe_adapter *adapter = netdev_priv(dev);
580 struct ieee_ets *my_ets = adapter->ixgbe_ieee_ets;
581
582 /* No IEEE PFC settings available */
583 if (!my_ets)
584 return -EINVAL;
585
586 ets->ets_cap = MAX_TRAFFIC_CLASS;
587 ets->cbs = my_ets->cbs;
588 memcpy(ets->tc_tx_bw, my_ets->tc_tx_bw, sizeof(ets->tc_tx_bw));
589 memcpy(ets->tc_rx_bw, my_ets->tc_rx_bw, sizeof(ets->tc_rx_bw));
590 memcpy(ets->tc_tsa, my_ets->tc_tsa, sizeof(ets->tc_tsa));
591 memcpy(ets->prio_tc, my_ets->prio_tc, sizeof(ets->prio_tc));
592 return 0;
593 }
594
595 static int ixgbe_dcbnl_ieee_setets(struct net_device *dev,
596 struct ieee_ets *ets)
597 {
598 struct ixgbe_adapter *adapter = netdev_priv(dev);
599 __u16 refill[IEEE_8021QAZ_MAX_TCS], max[IEEE_8021QAZ_MAX_TCS];
600 __u8 prio_type[IEEE_8021QAZ_MAX_TCS];
601 int max_frame = dev->mtu + ETH_HLEN + ETH_FCS_LEN;
602 int i, err;
603 __u64 *p = (__u64 *) ets->prio_tc;
604 /* naively give each TC a bwg to map onto CEE hardware */
605 __u8 bwg_id[IEEE_8021QAZ_MAX_TCS] = {0, 1, 2, 3, 4, 5, 6, 7};
606
607 if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
608 return -EINVAL;
609
610 if (!adapter->ixgbe_ieee_ets) {
611 adapter->ixgbe_ieee_ets = kmalloc(sizeof(struct ieee_ets),
612 GFP_KERNEL);
613 if (!adapter->ixgbe_ieee_ets)
614 return -ENOMEM;
615 }
616
617 memcpy(adapter->ixgbe_ieee_ets, ets, sizeof(*adapter->ixgbe_ieee_ets));
618
619 /* Map TSA onto CEE prio type */
620 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
621 switch (ets->tc_tsa[i]) {
622 case IEEE_8021QAZ_TSA_STRICT:
623 prio_type[i] = 2;
624 break;
625 case IEEE_8021QAZ_TSA_ETS:
626 prio_type[i] = 0;
627 break;
628 default:
629 /* Hardware only supports priority strict or
630 * ETS transmission selection algorithms if
631 * we receive some other value from dcbnl
632 * throw an error
633 */
634 return -EINVAL;
635 }
636 }
637
638 if (*p)
639 ixgbe_dcbnl_set_state(dev, 1);
640 else
641 ixgbe_dcbnl_set_state(dev, 0);
642
643 ixgbe_ieee_credits(ets->tc_tx_bw, refill, max, max_frame);
644 err = ixgbe_dcb_hw_ets_config(&adapter->hw, refill, max,
645 bwg_id, prio_type, ets->prio_tc);
646 return err;
647 }
648
649 static int ixgbe_dcbnl_ieee_getpfc(struct net_device *dev,
650 struct ieee_pfc *pfc)
651 {
652 struct ixgbe_adapter *adapter = netdev_priv(dev);
653 struct ieee_pfc *my_pfc = adapter->ixgbe_ieee_pfc;
654 int i;
655
656 /* No IEEE PFC settings available */
657 if (!my_pfc)
658 return -EINVAL;
659
660 pfc->pfc_cap = MAX_TRAFFIC_CLASS;
661 pfc->pfc_en = my_pfc->pfc_en;
662 pfc->mbc = my_pfc->mbc;
663 pfc->delay = my_pfc->delay;
664
665 for (i = 0; i < MAX_TRAFFIC_CLASS; i++) {
666 pfc->requests[i] = adapter->stats.pxoffrxc[i];
667 pfc->indications[i] = adapter->stats.pxofftxc[i];
668 }
669
670 return 0;
671 }
672
673 static int ixgbe_dcbnl_ieee_setpfc(struct net_device *dev,
674 struct ieee_pfc *pfc)
675 {
676 struct ixgbe_adapter *adapter = netdev_priv(dev);
677 int err;
678
679 if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
680 return -EINVAL;
681
682 if (!adapter->ixgbe_ieee_pfc) {
683 adapter->ixgbe_ieee_pfc = kmalloc(sizeof(struct ieee_pfc),
684 GFP_KERNEL);
685 if (!adapter->ixgbe_ieee_pfc)
686 return -ENOMEM;
687 }
688
689 memcpy(adapter->ixgbe_ieee_pfc, pfc, sizeof(*adapter->ixgbe_ieee_pfc));
690 err = ixgbe_dcb_hw_pfc_config(&adapter->hw, pfc->pfc_en);
691 return err;
692 }
693
694 static int ixgbe_dcbnl_ieee_setapp(struct net_device *dev,
695 struct dcb_app *app)
696 {
697 struct ixgbe_adapter *adapter = netdev_priv(dev);
698
699 if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
700 return -EINVAL;
701
702 dcb_setapp(dev, app);
703
704 #ifdef IXGBE_FCOE
705 if (app->selector == 1 && app->protocol == ETH_P_FCOE &&
706 adapter->fcoe.tc == app->priority)
707 ixgbe_dcbnl_set_all(dev);
708 #endif
709 return 0;
710 }
711
712 static u8 ixgbe_dcbnl_getdcbx(struct net_device *dev)
713 {
714 struct ixgbe_adapter *adapter = netdev_priv(dev);
715 return adapter->dcbx_cap;
716 }
717
718 static u8 ixgbe_dcbnl_setdcbx(struct net_device *dev, u8 mode)
719 {
720 struct ixgbe_adapter *adapter = netdev_priv(dev);
721 struct ieee_ets ets = {0};
722 struct ieee_pfc pfc = {0};
723
724 /* no support for LLD_MANAGED modes or CEE+IEEE */
725 if ((mode & DCB_CAP_DCBX_LLD_MANAGED) ||
726 ((mode & DCB_CAP_DCBX_VER_IEEE) && (mode & DCB_CAP_DCBX_VER_CEE)) ||
727 !(mode & DCB_CAP_DCBX_HOST))
728 return 1;
729
730 if (mode == adapter->dcbx_cap)
731 return 0;
732
733 adapter->dcbx_cap = mode;
734
735 /* ETS and PFC defaults */
736 ets.ets_cap = 8;
737 pfc.pfc_cap = 8;
738
739 if (mode & DCB_CAP_DCBX_VER_IEEE) {
740 ixgbe_dcbnl_ieee_setets(dev, &ets);
741 ixgbe_dcbnl_ieee_setpfc(dev, &pfc);
742 } else if (mode & DCB_CAP_DCBX_VER_CEE) {
743 adapter->dcb_set_bitmap |= (BIT_PFC & BIT_PG_TX & BIT_PG_RX);
744 ixgbe_dcbnl_set_all(dev);
745 } else {
746 /* Drop into single TC mode strict priority as this
747 * indicates CEE and IEEE versions are disabled
748 */
749 ixgbe_dcbnl_ieee_setets(dev, &ets);
750 ixgbe_dcbnl_ieee_setpfc(dev, &pfc);
751 ixgbe_dcbnl_set_state(dev, 0);
752 }
753
754 return 0;
755 }
756
757 const struct dcbnl_rtnl_ops dcbnl_ops = {
758 .ieee_getets = ixgbe_dcbnl_ieee_getets,
759 .ieee_setets = ixgbe_dcbnl_ieee_setets,
760 .ieee_getpfc = ixgbe_dcbnl_ieee_getpfc,
761 .ieee_setpfc = ixgbe_dcbnl_ieee_setpfc,
762 .ieee_setapp = ixgbe_dcbnl_ieee_setapp,
763 .getstate = ixgbe_dcbnl_get_state,
764 .setstate = ixgbe_dcbnl_set_state,
765 .getpermhwaddr = ixgbe_dcbnl_get_perm_hw_addr,
766 .setpgtccfgtx = ixgbe_dcbnl_set_pg_tc_cfg_tx,
767 .setpgbwgcfgtx = ixgbe_dcbnl_set_pg_bwg_cfg_tx,
768 .setpgtccfgrx = ixgbe_dcbnl_set_pg_tc_cfg_rx,
769 .setpgbwgcfgrx = ixgbe_dcbnl_set_pg_bwg_cfg_rx,
770 .getpgtccfgtx = ixgbe_dcbnl_get_pg_tc_cfg_tx,
771 .getpgbwgcfgtx = ixgbe_dcbnl_get_pg_bwg_cfg_tx,
772 .getpgtccfgrx = ixgbe_dcbnl_get_pg_tc_cfg_rx,
773 .getpgbwgcfgrx = ixgbe_dcbnl_get_pg_bwg_cfg_rx,
774 .setpfccfg = ixgbe_dcbnl_set_pfc_cfg,
775 .getpfccfg = ixgbe_dcbnl_get_pfc_cfg,
776 .setall = ixgbe_dcbnl_set_all,
777 .getcap = ixgbe_dcbnl_getcap,
778 .getnumtcs = ixgbe_dcbnl_getnumtcs,
779 .setnumtcs = ixgbe_dcbnl_setnumtcs,
780 .getpfcstate = ixgbe_dcbnl_getpfcstate,
781 .setpfcstate = ixgbe_dcbnl_setpfcstate,
782 .getapp = ixgbe_dcbnl_getapp,
783 .getdcbx = ixgbe_dcbnl_getdcbx,
784 .setdcbx = ixgbe_dcbnl_setdcbx,
785 };
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