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[mirror_ubuntu-hirsute-kernel.git] / drivers / net / ethernet / intel / ixgbe / ixgbe_dcb_nl.c
1 /*******************************************************************************
2
3 Intel 10 Gigabit PCI Express Linux driver
4 Copyright(c) 1999 - 2014 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 #include "ixgbe_sriov.h"
34
35 /* Callbacks for DCB netlink in the kernel */
36 #define BIT_DCB_MODE 0x01
37 #define BIT_PFC 0x02
38 #define BIT_PG_RX 0x04
39 #define BIT_PG_TX 0x08
40 #define BIT_APP_UPCHG 0x10
41 #define BIT_LINKSPEED 0x80
42
43 /* Responses for the DCB_C_SET_ALL command */
44 #define DCB_HW_CHG_RST 0 /* DCB configuration changed with reset */
45 #define DCB_NO_HW_CHG 1 /* DCB configuration did not change */
46 #define DCB_HW_CHG 2 /* DCB configuration changed, no reset */
47
48 static int ixgbe_copy_dcb_cfg(struct ixgbe_adapter *adapter, int tc_max)
49 {
50 struct ixgbe_dcb_config *scfg = &adapter->temp_dcb_cfg;
51 struct ixgbe_dcb_config *dcfg = &adapter->dcb_cfg;
52 struct tc_configuration *src = NULL;
53 struct tc_configuration *dst = NULL;
54 int i, j;
55 int tx = DCB_TX_CONFIG;
56 int rx = DCB_RX_CONFIG;
57 int changes = 0;
58 #ifdef IXGBE_FCOE
59 struct dcb_app app = {
60 .selector = DCB_APP_IDTYPE_ETHTYPE,
61 .protocol = ETH_P_FCOE,
62 };
63 u8 up = dcb_getapp(adapter->netdev, &app);
64
65 if (up && !(up & (1 << adapter->fcoe.up)))
66 changes |= BIT_APP_UPCHG;
67 #endif
68
69 for (i = DCB_PG_ATTR_TC_0; i < tc_max + DCB_PG_ATTR_TC_0; i++) {
70 src = &scfg->tc_config[i - DCB_PG_ATTR_TC_0];
71 dst = &dcfg->tc_config[i - DCB_PG_ATTR_TC_0];
72
73 if (dst->path[tx].prio_type != src->path[tx].prio_type) {
74 dst->path[tx].prio_type = src->path[tx].prio_type;
75 changes |= BIT_PG_TX;
76 }
77
78 if (dst->path[tx].bwg_id != src->path[tx].bwg_id) {
79 dst->path[tx].bwg_id = src->path[tx].bwg_id;
80 changes |= BIT_PG_TX;
81 }
82
83 if (dst->path[tx].bwg_percent != src->path[tx].bwg_percent) {
84 dst->path[tx].bwg_percent = src->path[tx].bwg_percent;
85 changes |= BIT_PG_TX;
86 }
87
88 if (dst->path[tx].up_to_tc_bitmap !=
89 src->path[tx].up_to_tc_bitmap) {
90 dst->path[tx].up_to_tc_bitmap =
91 src->path[tx].up_to_tc_bitmap;
92 changes |= (BIT_PG_TX | BIT_PFC | BIT_APP_UPCHG);
93 }
94
95 if (dst->path[rx].prio_type != src->path[rx].prio_type) {
96 dst->path[rx].prio_type = src->path[rx].prio_type;
97 changes |= BIT_PG_RX;
98 }
99
100 if (dst->path[rx].bwg_id != src->path[rx].bwg_id) {
101 dst->path[rx].bwg_id = src->path[rx].bwg_id;
102 changes |= BIT_PG_RX;
103 }
104
105 if (dst->path[rx].bwg_percent != src->path[rx].bwg_percent) {
106 dst->path[rx].bwg_percent = src->path[rx].bwg_percent;
107 changes |= BIT_PG_RX;
108 }
109
110 if (dst->path[rx].up_to_tc_bitmap !=
111 src->path[rx].up_to_tc_bitmap) {
112 dst->path[rx].up_to_tc_bitmap =
113 src->path[rx].up_to_tc_bitmap;
114 changes |= (BIT_PG_RX | BIT_PFC | BIT_APP_UPCHG);
115 }
116 }
117
118 for (i = DCB_PG_ATTR_BW_ID_0; i < DCB_PG_ATTR_BW_ID_MAX; i++) {
119 j = i - DCB_PG_ATTR_BW_ID_0;
120 if (dcfg->bw_percentage[tx][j] != scfg->bw_percentage[tx][j]) {
121 dcfg->bw_percentage[tx][j] = scfg->bw_percentage[tx][j];
122 changes |= BIT_PG_TX;
123 }
124 if (dcfg->bw_percentage[rx][j] != scfg->bw_percentage[rx][j]) {
125 dcfg->bw_percentage[rx][j] = scfg->bw_percentage[rx][j];
126 changes |= BIT_PG_RX;
127 }
128 }
129
130 for (i = DCB_PFC_UP_ATTR_0; i < DCB_PFC_UP_ATTR_MAX; i++) {
131 j = i - DCB_PFC_UP_ATTR_0;
132 if (dcfg->tc_config[j].dcb_pfc != scfg->tc_config[j].dcb_pfc) {
133 dcfg->tc_config[j].dcb_pfc = scfg->tc_config[j].dcb_pfc;
134 changes |= BIT_PFC;
135 }
136 }
137
138 if (dcfg->pfc_mode_enable != scfg->pfc_mode_enable) {
139 dcfg->pfc_mode_enable = scfg->pfc_mode_enable;
140 changes |= BIT_PFC;
141 }
142
143 return changes;
144 }
145
146 static u8 ixgbe_dcbnl_get_state(struct net_device *netdev)
147 {
148 struct ixgbe_adapter *adapter = netdev_priv(netdev);
149
150 return !!(adapter->flags & IXGBE_FLAG_DCB_ENABLED);
151 }
152
153 static u8 ixgbe_dcbnl_set_state(struct net_device *netdev, u8 state)
154 {
155 struct ixgbe_adapter *adapter = netdev_priv(netdev);
156
157 /* Fail command if not in CEE mode */
158 if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE))
159 return 1;
160
161 /* verify there is something to do, if not then exit */
162 if (!state == !(adapter->flags & IXGBE_FLAG_DCB_ENABLED))
163 return 0;
164
165 return !!ixgbe_setup_tc(netdev,
166 state ? adapter->dcb_cfg.num_tcs.pg_tcs : 0);
167 }
168
169 static void ixgbe_dcbnl_get_perm_hw_addr(struct net_device *netdev,
170 u8 *perm_addr)
171 {
172 struct ixgbe_adapter *adapter = netdev_priv(netdev);
173 int i, j;
174
175 memset(perm_addr, 0xff, MAX_ADDR_LEN);
176
177 for (i = 0; i < netdev->addr_len; i++)
178 perm_addr[i] = adapter->hw.mac.perm_addr[i];
179
180 switch (adapter->hw.mac.type) {
181 case ixgbe_mac_82599EB:
182 case ixgbe_mac_X540:
183 case ixgbe_mac_X550:
184 for (j = 0; j < netdev->addr_len; j++, i++)
185 perm_addr[i] = adapter->hw.mac.san_addr[j];
186 break;
187 default:
188 break;
189 }
190 }
191
192 static void ixgbe_dcbnl_set_pg_tc_cfg_tx(struct net_device *netdev, int tc,
193 u8 prio, u8 bwg_id, u8 bw_pct,
194 u8 up_map)
195 {
196 struct ixgbe_adapter *adapter = netdev_priv(netdev);
197
198 if (prio != DCB_ATTR_VALUE_UNDEFINED)
199 adapter->temp_dcb_cfg.tc_config[tc].path[0].prio_type = prio;
200 if (bwg_id != DCB_ATTR_VALUE_UNDEFINED)
201 adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_id = bwg_id;
202 if (bw_pct != DCB_ATTR_VALUE_UNDEFINED)
203 adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_percent =
204 bw_pct;
205 if (up_map != DCB_ATTR_VALUE_UNDEFINED)
206 adapter->temp_dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap =
207 up_map;
208 }
209
210 static void ixgbe_dcbnl_set_pg_bwg_cfg_tx(struct net_device *netdev, int bwg_id,
211 u8 bw_pct)
212 {
213 struct ixgbe_adapter *adapter = netdev_priv(netdev);
214
215 adapter->temp_dcb_cfg.bw_percentage[0][bwg_id] = bw_pct;
216 }
217
218 static void ixgbe_dcbnl_set_pg_tc_cfg_rx(struct net_device *netdev, int tc,
219 u8 prio, u8 bwg_id, u8 bw_pct,
220 u8 up_map)
221 {
222 struct ixgbe_adapter *adapter = netdev_priv(netdev);
223
224 if (prio != DCB_ATTR_VALUE_UNDEFINED)
225 adapter->temp_dcb_cfg.tc_config[tc].path[1].prio_type = prio;
226 if (bwg_id != DCB_ATTR_VALUE_UNDEFINED)
227 adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_id = bwg_id;
228 if (bw_pct != DCB_ATTR_VALUE_UNDEFINED)
229 adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_percent =
230 bw_pct;
231 if (up_map != DCB_ATTR_VALUE_UNDEFINED)
232 adapter->temp_dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap =
233 up_map;
234 }
235
236 static void ixgbe_dcbnl_set_pg_bwg_cfg_rx(struct net_device *netdev, int bwg_id,
237 u8 bw_pct)
238 {
239 struct ixgbe_adapter *adapter = netdev_priv(netdev);
240
241 adapter->temp_dcb_cfg.bw_percentage[1][bwg_id] = bw_pct;
242 }
243
244 static void ixgbe_dcbnl_get_pg_tc_cfg_tx(struct net_device *netdev, int tc,
245 u8 *prio, u8 *bwg_id, u8 *bw_pct,
246 u8 *up_map)
247 {
248 struct ixgbe_adapter *adapter = netdev_priv(netdev);
249
250 *prio = adapter->dcb_cfg.tc_config[tc].path[0].prio_type;
251 *bwg_id = adapter->dcb_cfg.tc_config[tc].path[0].bwg_id;
252 *bw_pct = adapter->dcb_cfg.tc_config[tc].path[0].bwg_percent;
253 *up_map = adapter->dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap;
254 }
255
256 static void ixgbe_dcbnl_get_pg_bwg_cfg_tx(struct net_device *netdev, int bwg_id,
257 u8 *bw_pct)
258 {
259 struct ixgbe_adapter *adapter = netdev_priv(netdev);
260
261 *bw_pct = adapter->dcb_cfg.bw_percentage[0][bwg_id];
262 }
263
264 static void ixgbe_dcbnl_get_pg_tc_cfg_rx(struct net_device *netdev, int tc,
265 u8 *prio, u8 *bwg_id, u8 *bw_pct,
266 u8 *up_map)
267 {
268 struct ixgbe_adapter *adapter = netdev_priv(netdev);
269
270 *prio = adapter->dcb_cfg.tc_config[tc].path[1].prio_type;
271 *bwg_id = adapter->dcb_cfg.tc_config[tc].path[1].bwg_id;
272 *bw_pct = adapter->dcb_cfg.tc_config[tc].path[1].bwg_percent;
273 *up_map = adapter->dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap;
274 }
275
276 static void ixgbe_dcbnl_get_pg_bwg_cfg_rx(struct net_device *netdev, int bwg_id,
277 u8 *bw_pct)
278 {
279 struct ixgbe_adapter *adapter = netdev_priv(netdev);
280
281 *bw_pct = adapter->dcb_cfg.bw_percentage[1][bwg_id];
282 }
283
284 static void ixgbe_dcbnl_set_pfc_cfg(struct net_device *netdev, int priority,
285 u8 setting)
286 {
287 struct ixgbe_adapter *adapter = netdev_priv(netdev);
288
289 adapter->temp_dcb_cfg.tc_config[priority].dcb_pfc = setting;
290 if (adapter->temp_dcb_cfg.tc_config[priority].dcb_pfc !=
291 adapter->dcb_cfg.tc_config[priority].dcb_pfc)
292 adapter->temp_dcb_cfg.pfc_mode_enable = true;
293 }
294
295 static void ixgbe_dcbnl_get_pfc_cfg(struct net_device *netdev, int priority,
296 u8 *setting)
297 {
298 struct ixgbe_adapter *adapter = netdev_priv(netdev);
299
300 *setting = adapter->dcb_cfg.tc_config[priority].dcb_pfc;
301 }
302
303 static void ixgbe_dcbnl_devreset(struct net_device *dev)
304 {
305 struct ixgbe_adapter *adapter = netdev_priv(dev);
306
307 while (test_and_set_bit(__IXGBE_RESETTING, &adapter->state))
308 usleep_range(1000, 2000);
309
310 if (netif_running(dev))
311 dev->netdev_ops->ndo_stop(dev);
312
313 ixgbe_clear_interrupt_scheme(adapter);
314 ixgbe_init_interrupt_scheme(adapter);
315
316 if (netif_running(dev))
317 dev->netdev_ops->ndo_open(dev);
318
319 clear_bit(__IXGBE_RESETTING, &adapter->state);
320 }
321
322 static u8 ixgbe_dcbnl_set_all(struct net_device *netdev)
323 {
324 struct ixgbe_adapter *adapter = netdev_priv(netdev);
325 struct ixgbe_dcb_config *dcb_cfg = &adapter->dcb_cfg;
326 struct ixgbe_hw *hw = &adapter->hw;
327 int ret = DCB_NO_HW_CHG;
328 int i;
329
330 /* Fail command if not in CEE mode */
331 if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE))
332 return DCB_NO_HW_CHG;
333
334 adapter->dcb_set_bitmap |= ixgbe_copy_dcb_cfg(adapter,
335 MAX_TRAFFIC_CLASS);
336 if (!adapter->dcb_set_bitmap)
337 return DCB_NO_HW_CHG;
338
339 if (adapter->dcb_set_bitmap & (BIT_PG_TX|BIT_PG_RX)) {
340 u16 refill[MAX_TRAFFIC_CLASS], max[MAX_TRAFFIC_CLASS];
341 u8 bwg_id[MAX_TRAFFIC_CLASS], prio_type[MAX_TRAFFIC_CLASS];
342 /* Priority to TC mapping in CEE case default to 1:1 */
343 u8 prio_tc[MAX_USER_PRIORITY];
344 int max_frame = adapter->netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
345
346 #ifdef IXGBE_FCOE
347 if (adapter->netdev->features & NETIF_F_FCOE_MTU)
348 max_frame = max(max_frame, IXGBE_FCOE_JUMBO_FRAME_SIZE);
349 #endif
350
351 ixgbe_dcb_calculate_tc_credits(hw, dcb_cfg, max_frame,
352 DCB_TX_CONFIG);
353 ixgbe_dcb_calculate_tc_credits(hw, dcb_cfg, max_frame,
354 DCB_RX_CONFIG);
355
356 ixgbe_dcb_unpack_refill(dcb_cfg, DCB_TX_CONFIG, refill);
357 ixgbe_dcb_unpack_max(dcb_cfg, max);
358 ixgbe_dcb_unpack_bwgid(dcb_cfg, DCB_TX_CONFIG, bwg_id);
359 ixgbe_dcb_unpack_prio(dcb_cfg, DCB_TX_CONFIG, prio_type);
360 ixgbe_dcb_unpack_map(dcb_cfg, DCB_TX_CONFIG, prio_tc);
361
362 ixgbe_dcb_hw_ets_config(hw, refill, max, bwg_id,
363 prio_type, prio_tc);
364
365 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
366 netdev_set_prio_tc_map(netdev, i, prio_tc[i]);
367
368 ret = DCB_HW_CHG_RST;
369 }
370
371 if (adapter->dcb_set_bitmap & BIT_PFC) {
372 if (dcb_cfg->pfc_mode_enable) {
373 u8 pfc_en;
374 u8 prio_tc[MAX_USER_PRIORITY];
375
376 ixgbe_dcb_unpack_map(dcb_cfg, DCB_TX_CONFIG, prio_tc);
377 ixgbe_dcb_unpack_pfc(dcb_cfg, &pfc_en);
378 ixgbe_dcb_hw_pfc_config(hw, pfc_en, prio_tc);
379 } else {
380 hw->mac.ops.fc_enable(hw);
381 }
382
383 ixgbe_set_rx_drop_en(adapter);
384
385 ret = DCB_HW_CHG;
386 }
387
388 #ifdef IXGBE_FCOE
389 /* Reprogam FCoE hardware offloads when the traffic class
390 * FCoE is using changes. This happens if the APP info
391 * changes or the up2tc mapping is updated.
392 */
393 if (adapter->dcb_set_bitmap & BIT_APP_UPCHG) {
394 struct dcb_app app = {
395 .selector = DCB_APP_IDTYPE_ETHTYPE,
396 .protocol = ETH_P_FCOE,
397 };
398 u8 up = dcb_getapp(netdev, &app);
399
400 adapter->fcoe.up = ffs(up) - 1;
401 ixgbe_dcbnl_devreset(netdev);
402 ret = DCB_HW_CHG_RST;
403 }
404 #endif
405
406 adapter->dcb_set_bitmap = 0x00;
407 return ret;
408 }
409
410 static u8 ixgbe_dcbnl_getcap(struct net_device *netdev, int capid, u8 *cap)
411 {
412 struct ixgbe_adapter *adapter = netdev_priv(netdev);
413
414 switch (capid) {
415 case DCB_CAP_ATTR_PG:
416 *cap = true;
417 break;
418 case DCB_CAP_ATTR_PFC:
419 *cap = true;
420 break;
421 case DCB_CAP_ATTR_UP2TC:
422 *cap = false;
423 break;
424 case DCB_CAP_ATTR_PG_TCS:
425 *cap = 0x80;
426 break;
427 case DCB_CAP_ATTR_PFC_TCS:
428 *cap = 0x80;
429 break;
430 case DCB_CAP_ATTR_GSP:
431 *cap = true;
432 break;
433 case DCB_CAP_ATTR_BCN:
434 *cap = false;
435 break;
436 case DCB_CAP_ATTR_DCBX:
437 *cap = adapter->dcbx_cap;
438 break;
439 default:
440 *cap = false;
441 break;
442 }
443
444 return 0;
445 }
446
447 static int ixgbe_dcbnl_getnumtcs(struct net_device *netdev, int tcid, u8 *num)
448 {
449 struct ixgbe_adapter *adapter = netdev_priv(netdev);
450
451 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
452 switch (tcid) {
453 case DCB_NUMTCS_ATTR_PG:
454 *num = adapter->dcb_cfg.num_tcs.pg_tcs;
455 break;
456 case DCB_NUMTCS_ATTR_PFC:
457 *num = adapter->dcb_cfg.num_tcs.pfc_tcs;
458 break;
459 default:
460 return -EINVAL;
461 }
462 } else {
463 return -EINVAL;
464 }
465
466 return 0;
467 }
468
469 static int ixgbe_dcbnl_setnumtcs(struct net_device *netdev, int tcid, u8 num)
470 {
471 return -EINVAL;
472 }
473
474 static u8 ixgbe_dcbnl_getpfcstate(struct net_device *netdev)
475 {
476 struct ixgbe_adapter *adapter = netdev_priv(netdev);
477
478 return adapter->dcb_cfg.pfc_mode_enable;
479 }
480
481 static void ixgbe_dcbnl_setpfcstate(struct net_device *netdev, u8 state)
482 {
483 struct ixgbe_adapter *adapter = netdev_priv(netdev);
484
485 adapter->temp_dcb_cfg.pfc_mode_enable = state;
486 }
487
488 /**
489 * ixgbe_dcbnl_getapp - retrieve the DCBX application user priority
490 * @netdev : the corresponding netdev
491 * @idtype : identifies the id as ether type or TCP/UDP port number
492 * @id: id is either ether type or TCP/UDP port number
493 *
494 * Returns : on success, returns a non-zero 802.1p user priority bitmap
495 * otherwise returns -EINVAL as the invalid user priority bitmap to indicate an
496 * error.
497 */
498 static int ixgbe_dcbnl_getapp(struct net_device *netdev, u8 idtype, u16 id)
499 {
500 struct ixgbe_adapter *adapter = netdev_priv(netdev);
501 struct dcb_app app = {
502 .selector = idtype,
503 .protocol = id,
504 };
505
506 if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE))
507 return -EINVAL;
508
509 return dcb_getapp(netdev, &app);
510 }
511
512 static int ixgbe_dcbnl_ieee_getets(struct net_device *dev,
513 struct ieee_ets *ets)
514 {
515 struct ixgbe_adapter *adapter = netdev_priv(dev);
516 struct ieee_ets *my_ets = adapter->ixgbe_ieee_ets;
517
518 ets->ets_cap = adapter->dcb_cfg.num_tcs.pg_tcs;
519
520 /* No IEEE PFC settings available */
521 if (!my_ets)
522 return 0;
523
524 ets->cbs = my_ets->cbs;
525 memcpy(ets->tc_tx_bw, my_ets->tc_tx_bw, sizeof(ets->tc_tx_bw));
526 memcpy(ets->tc_rx_bw, my_ets->tc_rx_bw, sizeof(ets->tc_rx_bw));
527 memcpy(ets->tc_tsa, my_ets->tc_tsa, sizeof(ets->tc_tsa));
528 memcpy(ets->prio_tc, my_ets->prio_tc, sizeof(ets->prio_tc));
529 return 0;
530 }
531
532 static int ixgbe_dcbnl_ieee_setets(struct net_device *dev,
533 struct ieee_ets *ets)
534 {
535 struct ixgbe_adapter *adapter = netdev_priv(dev);
536 int max_frame = dev->mtu + ETH_HLEN + ETH_FCS_LEN;
537 int i, err;
538 __u8 max_tc = 0;
539 __u8 map_chg = 0;
540
541 if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
542 return -EINVAL;
543
544 if (!adapter->ixgbe_ieee_ets) {
545 adapter->ixgbe_ieee_ets = kmalloc(sizeof(struct ieee_ets),
546 GFP_KERNEL);
547 if (!adapter->ixgbe_ieee_ets)
548 return -ENOMEM;
549
550 /* initialize UP2TC mappings to invalid value */
551 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
552 adapter->ixgbe_ieee_ets->prio_tc[i] =
553 IEEE_8021QAZ_MAX_TCS;
554 /* if possible update UP2TC mappings from HW */
555 ixgbe_dcb_read_rtrup2tc(&adapter->hw,
556 adapter->ixgbe_ieee_ets->prio_tc);
557 }
558
559 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
560 if (ets->prio_tc[i] > max_tc)
561 max_tc = ets->prio_tc[i];
562 if (ets->prio_tc[i] != adapter->ixgbe_ieee_ets->prio_tc[i])
563 map_chg = 1;
564 }
565
566 memcpy(adapter->ixgbe_ieee_ets, ets, sizeof(*adapter->ixgbe_ieee_ets));
567
568 if (max_tc)
569 max_tc++;
570
571 if (max_tc > adapter->dcb_cfg.num_tcs.pg_tcs)
572 return -EINVAL;
573
574 if (max_tc != netdev_get_num_tc(dev)) {
575 err = ixgbe_setup_tc(dev, max_tc);
576 if (err)
577 return err;
578 } else if (map_chg) {
579 ixgbe_dcbnl_devreset(dev);
580 }
581
582 return ixgbe_dcb_hw_ets(&adapter->hw, ets, max_frame);
583 }
584
585 static int ixgbe_dcbnl_ieee_getpfc(struct net_device *dev,
586 struct ieee_pfc *pfc)
587 {
588 struct ixgbe_adapter *adapter = netdev_priv(dev);
589 struct ieee_pfc *my_pfc = adapter->ixgbe_ieee_pfc;
590 int i;
591
592 pfc->pfc_cap = adapter->dcb_cfg.num_tcs.pfc_tcs;
593
594 /* No IEEE PFC settings available */
595 if (!my_pfc)
596 return 0;
597
598 pfc->pfc_en = my_pfc->pfc_en;
599 pfc->mbc = my_pfc->mbc;
600 pfc->delay = my_pfc->delay;
601
602 for (i = 0; i < MAX_TRAFFIC_CLASS; i++) {
603 pfc->requests[i] = adapter->stats.pxoffrxc[i];
604 pfc->indications[i] = adapter->stats.pxofftxc[i];
605 }
606
607 return 0;
608 }
609
610 static int ixgbe_dcbnl_ieee_setpfc(struct net_device *dev,
611 struct ieee_pfc *pfc)
612 {
613 struct ixgbe_adapter *adapter = netdev_priv(dev);
614 struct ixgbe_hw *hw = &adapter->hw;
615 u8 *prio_tc;
616 int err;
617
618 if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
619 return -EINVAL;
620
621 if (!adapter->ixgbe_ieee_pfc) {
622 adapter->ixgbe_ieee_pfc = kmalloc(sizeof(struct ieee_pfc),
623 GFP_KERNEL);
624 if (!adapter->ixgbe_ieee_pfc)
625 return -ENOMEM;
626 }
627
628 prio_tc = adapter->ixgbe_ieee_ets->prio_tc;
629 memcpy(adapter->ixgbe_ieee_pfc, pfc, sizeof(*adapter->ixgbe_ieee_pfc));
630
631 /* Enable link flow control parameters if PFC is disabled */
632 if (pfc->pfc_en)
633 err = ixgbe_dcb_hw_pfc_config(hw, pfc->pfc_en, prio_tc);
634 else
635 err = hw->mac.ops.fc_enable(hw);
636
637 ixgbe_set_rx_drop_en(adapter);
638
639 return err;
640 }
641
642 static int ixgbe_dcbnl_ieee_setapp(struct net_device *dev,
643 struct dcb_app *app)
644 {
645 struct ixgbe_adapter *adapter = netdev_priv(dev);
646 int err;
647
648 if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
649 return -EINVAL;
650
651 err = dcb_ieee_setapp(dev, app);
652 if (err)
653 return err;
654
655 #ifdef IXGBE_FCOE
656 if (app->selector == IEEE_8021QAZ_APP_SEL_ETHERTYPE &&
657 app->protocol == ETH_P_FCOE) {
658 u8 app_mask = dcb_ieee_getapp_mask(dev, app);
659
660 if (app_mask & (1 << adapter->fcoe.up))
661 return 0;
662
663 adapter->fcoe.up = app->priority;
664 ixgbe_dcbnl_devreset(dev);
665 }
666 #endif
667
668 /* VF devices should use default UP when available */
669 if (app->selector == IEEE_8021QAZ_APP_SEL_ETHERTYPE &&
670 app->protocol == 0) {
671 int vf;
672
673 adapter->default_up = app->priority;
674
675 for (vf = 0; vf < adapter->num_vfs; vf++) {
676 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf];
677
678 if (!vfinfo->pf_qos)
679 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan,
680 app->priority, vf);
681 }
682 }
683
684 return 0;
685 }
686
687 static int ixgbe_dcbnl_ieee_delapp(struct net_device *dev,
688 struct dcb_app *app)
689 {
690 struct ixgbe_adapter *adapter = netdev_priv(dev);
691 int err;
692
693 if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
694 return -EINVAL;
695
696 err = dcb_ieee_delapp(dev, app);
697
698 #ifdef IXGBE_FCOE
699 if (!err && app->selector == IEEE_8021QAZ_APP_SEL_ETHERTYPE &&
700 app->protocol == ETH_P_FCOE) {
701 u8 app_mask = dcb_ieee_getapp_mask(dev, app);
702
703 if (app_mask & (1 << adapter->fcoe.up))
704 return 0;
705
706 adapter->fcoe.up = app_mask ?
707 ffs(app_mask) - 1 : IXGBE_FCOE_DEFTC;
708 ixgbe_dcbnl_devreset(dev);
709 }
710 #endif
711 /* IF default priority is being removed clear VF default UP */
712 if (app->selector == IEEE_8021QAZ_APP_SEL_ETHERTYPE &&
713 app->protocol == 0 && adapter->default_up == app->priority) {
714 int vf;
715 long unsigned int app_mask = dcb_ieee_getapp_mask(dev, app);
716 int qos = app_mask ? find_first_bit(&app_mask, 8) : 0;
717
718 adapter->default_up = qos;
719
720 for (vf = 0; vf < adapter->num_vfs; vf++) {
721 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf];
722
723 if (!vfinfo->pf_qos)
724 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan,
725 qos, vf);
726 }
727 }
728
729 return err;
730 }
731
732 static u8 ixgbe_dcbnl_getdcbx(struct net_device *dev)
733 {
734 struct ixgbe_adapter *adapter = netdev_priv(dev);
735 return adapter->dcbx_cap;
736 }
737
738 static u8 ixgbe_dcbnl_setdcbx(struct net_device *dev, u8 mode)
739 {
740 struct ixgbe_adapter *adapter = netdev_priv(dev);
741 struct ieee_ets ets = {0};
742 struct ieee_pfc pfc = {0};
743 int err = 0;
744
745 /* no support for LLD_MANAGED modes or CEE+IEEE */
746 if ((mode & DCB_CAP_DCBX_LLD_MANAGED) ||
747 ((mode & DCB_CAP_DCBX_VER_IEEE) && (mode & DCB_CAP_DCBX_VER_CEE)) ||
748 !(mode & DCB_CAP_DCBX_HOST))
749 return 1;
750
751 if (mode == adapter->dcbx_cap)
752 return 0;
753
754 adapter->dcbx_cap = mode;
755
756 /* ETS and PFC defaults */
757 ets.ets_cap = 8;
758 pfc.pfc_cap = 8;
759
760 if (mode & DCB_CAP_DCBX_VER_IEEE) {
761 ixgbe_dcbnl_ieee_setets(dev, &ets);
762 ixgbe_dcbnl_ieee_setpfc(dev, &pfc);
763 } else if (mode & DCB_CAP_DCBX_VER_CEE) {
764 u8 mask = BIT_PFC | BIT_PG_TX | BIT_PG_RX | BIT_APP_UPCHG;
765
766 adapter->dcb_set_bitmap |= mask;
767 ixgbe_dcbnl_set_all(dev);
768 } else {
769 /* Drop into single TC mode strict priority as this
770 * indicates CEE and IEEE versions are disabled
771 */
772 ixgbe_dcbnl_ieee_setets(dev, &ets);
773 ixgbe_dcbnl_ieee_setpfc(dev, &pfc);
774 err = ixgbe_setup_tc(dev, 0);
775 }
776
777 return err ? 1 : 0;
778 }
779
780 const struct dcbnl_rtnl_ops dcbnl_ops = {
781 .ieee_getets = ixgbe_dcbnl_ieee_getets,
782 .ieee_setets = ixgbe_dcbnl_ieee_setets,
783 .ieee_getpfc = ixgbe_dcbnl_ieee_getpfc,
784 .ieee_setpfc = ixgbe_dcbnl_ieee_setpfc,
785 .ieee_setapp = ixgbe_dcbnl_ieee_setapp,
786 .ieee_delapp = ixgbe_dcbnl_ieee_delapp,
787 .getstate = ixgbe_dcbnl_get_state,
788 .setstate = ixgbe_dcbnl_set_state,
789 .getpermhwaddr = ixgbe_dcbnl_get_perm_hw_addr,
790 .setpgtccfgtx = ixgbe_dcbnl_set_pg_tc_cfg_tx,
791 .setpgbwgcfgtx = ixgbe_dcbnl_set_pg_bwg_cfg_tx,
792 .setpgtccfgrx = ixgbe_dcbnl_set_pg_tc_cfg_rx,
793 .setpgbwgcfgrx = ixgbe_dcbnl_set_pg_bwg_cfg_rx,
794 .getpgtccfgtx = ixgbe_dcbnl_get_pg_tc_cfg_tx,
795 .getpgbwgcfgtx = ixgbe_dcbnl_get_pg_bwg_cfg_tx,
796 .getpgtccfgrx = ixgbe_dcbnl_get_pg_tc_cfg_rx,
797 .getpgbwgcfgrx = ixgbe_dcbnl_get_pg_bwg_cfg_rx,
798 .setpfccfg = ixgbe_dcbnl_set_pfc_cfg,
799 .getpfccfg = ixgbe_dcbnl_get_pfc_cfg,
800 .setall = ixgbe_dcbnl_set_all,
801 .getcap = ixgbe_dcbnl_getcap,
802 .getnumtcs = ixgbe_dcbnl_getnumtcs,
803 .setnumtcs = ixgbe_dcbnl_setnumtcs,
804 .getpfcstate = ixgbe_dcbnl_getpfcstate,
805 .setpfcstate = ixgbe_dcbnl_setpfcstate,
806 .getapp = ixgbe_dcbnl_getapp,
807 .getdcbx = ixgbe_dcbnl_getdcbx,
808 .setdcbx = ixgbe_dcbnl_setdcbx,
809 };
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