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gpio: rcar: Fix runtime PM imbalance on error
[linux/fpc-iii.git] / drivers / net / ethernet / intel / ixgbe / ixgbe_dcb_nl.c
blobc00332d2e02a8047b7658f0b6e00607e4d592468
1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright(c) 1999 - 2018 Intel Corporation. */
3
4 #include "ixgbe.h"
5 #include <linux/dcbnl.h>
6 #include "ixgbe_dcb_82598.h"
7 #include "ixgbe_dcb_82599.h"
8 #include "ixgbe_sriov.h"
9
10 /* Callbacks for DCB netlink in the kernel */
11 #define BIT_DCB_MODE 0x01
12 #define BIT_PFC 0x02
13 #define BIT_PG_RX 0x04
14 #define BIT_PG_TX 0x08
15 #define BIT_APP_UPCHG 0x10
16 #define BIT_LINKSPEED 0x80
17
18 /* Responses for the DCB_C_SET_ALL command */
19 #define DCB_HW_CHG_RST 0 /* DCB configuration changed with reset */
20 #define DCB_NO_HW_CHG 1 /* DCB configuration did not change */
21 #define DCB_HW_CHG 2 /* DCB configuration changed, no reset */
22
23 static int ixgbe_copy_dcb_cfg(struct ixgbe_adapter *adapter, int tc_max)
24 {
25 struct ixgbe_dcb_config *scfg = &adapter->temp_dcb_cfg;
26 struct ixgbe_dcb_config *dcfg = &adapter->dcb_cfg;
27 struct tc_configuration *src = NULL;
28 struct tc_configuration *dst = NULL;
29 int i, j;
30 int tx = DCB_TX_CONFIG;
31 int rx = DCB_RX_CONFIG;
32 int changes = 0;
33 #ifdef IXGBE_FCOE
34 struct dcb_app app = {
35 .selector = DCB_APP_IDTYPE_ETHTYPE,
36 .protocol = ETH_P_FCOE,
37 };
38 u8 up = dcb_getapp(adapter->netdev, &app);
39
40 if (up && !(up & BIT(adapter->fcoe.up)))
41 changes |= BIT_APP_UPCHG;
42 #endif
43
44 for (i = DCB_PG_ATTR_TC_0; i < tc_max + DCB_PG_ATTR_TC_0; i++) {
45 src = &scfg->tc_config[i - DCB_PG_ATTR_TC_0];
46 dst = &dcfg->tc_config[i - DCB_PG_ATTR_TC_0];
47
48 if (dst->path[tx].prio_type != src->path[tx].prio_type) {
49 dst->path[tx].prio_type = src->path[tx].prio_type;
50 changes |= BIT_PG_TX;
51 }
52
53 if (dst->path[tx].bwg_id != src->path[tx].bwg_id) {
54 dst->path[tx].bwg_id = src->path[tx].bwg_id;
55 changes |= BIT_PG_TX;
56 }
57
58 if (dst->path[tx].bwg_percent != src->path[tx].bwg_percent) {
59 dst->path[tx].bwg_percent = src->path[tx].bwg_percent;
60 changes |= BIT_PG_TX;
61 }
62
63 if (dst->path[tx].up_to_tc_bitmap !=
64 src->path[tx].up_to_tc_bitmap) {
65 dst->path[tx].up_to_tc_bitmap =
66 src->path[tx].up_to_tc_bitmap;
67 changes |= (BIT_PG_TX | BIT_PFC | BIT_APP_UPCHG);
68 }
69
70 if (dst->path[rx].prio_type != src->path[rx].prio_type) {
71 dst->path[rx].prio_type = src->path[rx].prio_type;
72 changes |= BIT_PG_RX;
73 }
74
75 if (dst->path[rx].bwg_id != src->path[rx].bwg_id) {
76 dst->path[rx].bwg_id = src->path[rx].bwg_id;
77 changes |= BIT_PG_RX;
78 }
79
80 if (dst->path[rx].bwg_percent != src->path[rx].bwg_percent) {
81 dst->path[rx].bwg_percent = src->path[rx].bwg_percent;
82 changes |= BIT_PG_RX;
83 }
84
85 if (dst->path[rx].up_to_tc_bitmap !=
86 src->path[rx].up_to_tc_bitmap) {
87 dst->path[rx].up_to_tc_bitmap =
88 src->path[rx].up_to_tc_bitmap;
89 changes |= (BIT_PG_RX | BIT_PFC | BIT_APP_UPCHG);
90 }
91 }
92
93 for (i = DCB_PG_ATTR_BW_ID_0; i < DCB_PG_ATTR_BW_ID_MAX; i++) {
94 j = i - DCB_PG_ATTR_BW_ID_0;
95 if (dcfg->bw_percentage[tx][j] != scfg->bw_percentage[tx][j]) {
96 dcfg->bw_percentage[tx][j] = scfg->bw_percentage[tx][j];
97 changes |= BIT_PG_TX;
98 }
99 if (dcfg->bw_percentage[rx][j] != scfg->bw_percentage[rx][j]) {
100 dcfg->bw_percentage[rx][j] = scfg->bw_percentage[rx][j];
101 changes |= BIT_PG_RX;
102 }
103 }
104
105 for (i = DCB_PFC_UP_ATTR_0; i < DCB_PFC_UP_ATTR_MAX; i++) {
106 j = i - DCB_PFC_UP_ATTR_0;
107 if (dcfg->tc_config[j].dcb_pfc != scfg->tc_config[j].dcb_pfc) {
108 dcfg->tc_config[j].dcb_pfc = scfg->tc_config[j].dcb_pfc;
109 changes |= BIT_PFC;
110 }
111 }
112
113 if (dcfg->pfc_mode_enable != scfg->pfc_mode_enable) {
114 dcfg->pfc_mode_enable = scfg->pfc_mode_enable;
115 changes |= BIT_PFC;
116 }
117
118 return changes;
119 }
120
121 static u8 ixgbe_dcbnl_get_state(struct net_device *netdev)
122 {
123 struct ixgbe_adapter *adapter = netdev_priv(netdev);
124
125 return !!(adapter->flags & IXGBE_FLAG_DCB_ENABLED);
126 }
127
128 static u8 ixgbe_dcbnl_set_state(struct net_device *netdev, u8 state)
129 {
130 struct ixgbe_adapter *adapter = netdev_priv(netdev);
131
132 /* Fail command if not in CEE mode */
133 if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE))
134 return 1;
135
136 /* verify there is something to do, if not then exit */
137 if (!state == !(adapter->flags & IXGBE_FLAG_DCB_ENABLED))
138 return 0;
139
140 return !!ixgbe_setup_tc(netdev,
141 state ? adapter->dcb_cfg.num_tcs.pg_tcs : 0);
142 }
143
144 static void ixgbe_dcbnl_get_perm_hw_addr(struct net_device *netdev,
145 u8 *perm_addr)
146 {
147 struct ixgbe_adapter *adapter = netdev_priv(netdev);
148 int i, j;
149
150 memset(perm_addr, 0xff, MAX_ADDR_LEN);
151
152 for (i = 0; i < netdev->addr_len; i++)
153 perm_addr[i] = adapter->hw.mac.perm_addr[i];
154
155 switch (adapter->hw.mac.type) {
156 case ixgbe_mac_82599EB:
157 case ixgbe_mac_X540:
158 case ixgbe_mac_X550:
159 for (j = 0; j < netdev->addr_len; j++, i++)
160 perm_addr[i] = adapter->hw.mac.san_addr[j];
161 break;
162 default:
163 break;
164 }
165 }
166
167 static void ixgbe_dcbnl_set_pg_tc_cfg_tx(struct net_device *netdev, int tc,
168 u8 prio, u8 bwg_id, u8 bw_pct,
169 u8 up_map)
170 {
171 struct ixgbe_adapter *adapter = netdev_priv(netdev);
172
173 if (prio != DCB_ATTR_VALUE_UNDEFINED)
174 adapter->temp_dcb_cfg.tc_config[tc].path[0].prio_type = prio;
175 if (bwg_id != DCB_ATTR_VALUE_UNDEFINED)
176 adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_id = bwg_id;
177 if (bw_pct != DCB_ATTR_VALUE_UNDEFINED)
178 adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_percent =
179 bw_pct;
180 if (up_map != DCB_ATTR_VALUE_UNDEFINED)
181 adapter->temp_dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap =
182 up_map;
183 }
184
185 static void ixgbe_dcbnl_set_pg_bwg_cfg_tx(struct net_device *netdev, int bwg_id,
186 u8 bw_pct)
187 {
188 struct ixgbe_adapter *adapter = netdev_priv(netdev);
189
190 adapter->temp_dcb_cfg.bw_percentage[0][bwg_id] = bw_pct;
191 }
192
193 static void ixgbe_dcbnl_set_pg_tc_cfg_rx(struct net_device *netdev, int tc,
194 u8 prio, u8 bwg_id, u8 bw_pct,
195 u8 up_map)
196 {
197 struct ixgbe_adapter *adapter = netdev_priv(netdev);
198
199 if (prio != DCB_ATTR_VALUE_UNDEFINED)
200 adapter->temp_dcb_cfg.tc_config[tc].path[1].prio_type = prio;
201 if (bwg_id != DCB_ATTR_VALUE_UNDEFINED)
202 adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_id = bwg_id;
203 if (bw_pct != DCB_ATTR_VALUE_UNDEFINED)
204 adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_percent =
205 bw_pct;
206 if (up_map != DCB_ATTR_VALUE_UNDEFINED)
207 adapter->temp_dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap =
208 up_map;
209 }
210
211 static void ixgbe_dcbnl_set_pg_bwg_cfg_rx(struct net_device *netdev, int bwg_id,
212 u8 bw_pct)
213 {
214 struct ixgbe_adapter *adapter = netdev_priv(netdev);
215
216 adapter->temp_dcb_cfg.bw_percentage[1][bwg_id] = bw_pct;
217 }
218
219 static void ixgbe_dcbnl_get_pg_tc_cfg_tx(struct net_device *netdev, int tc,
220 u8 *prio, u8 *bwg_id, u8 *bw_pct,
221 u8 *up_map)
222 {
223 struct ixgbe_adapter *adapter = netdev_priv(netdev);
224
225 *prio = adapter->dcb_cfg.tc_config[tc].path[0].prio_type;
226 *bwg_id = adapter->dcb_cfg.tc_config[tc].path[0].bwg_id;
227 *bw_pct = adapter->dcb_cfg.tc_config[tc].path[0].bwg_percent;
228 *up_map = adapter->dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap;
229 }
230
231 static void ixgbe_dcbnl_get_pg_bwg_cfg_tx(struct net_device *netdev, int bwg_id,
232 u8 *bw_pct)
233 {
234 struct ixgbe_adapter *adapter = netdev_priv(netdev);
235
236 *bw_pct = adapter->dcb_cfg.bw_percentage[0][bwg_id];
237 }
238
239 static void ixgbe_dcbnl_get_pg_tc_cfg_rx(struct net_device *netdev, int tc,
240 u8 *prio, u8 *bwg_id, u8 *bw_pct,
241 u8 *up_map)
242 {
243 struct ixgbe_adapter *adapter = netdev_priv(netdev);
244
245 *prio = adapter->dcb_cfg.tc_config[tc].path[1].prio_type;
246 *bwg_id = adapter->dcb_cfg.tc_config[tc].path[1].bwg_id;
247 *bw_pct = adapter->dcb_cfg.tc_config[tc].path[1].bwg_percent;
248 *up_map = adapter->dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap;
249 }
250
251 static void ixgbe_dcbnl_get_pg_bwg_cfg_rx(struct net_device *netdev, int bwg_id,
252 u8 *bw_pct)
253 {
254 struct ixgbe_adapter *adapter = netdev_priv(netdev);
255
256 *bw_pct = adapter->dcb_cfg.bw_percentage[1][bwg_id];
257 }
258
259 static void ixgbe_dcbnl_set_pfc_cfg(struct net_device *netdev, int priority,
260 u8 setting)
261 {
262 struct ixgbe_adapter *adapter = netdev_priv(netdev);
263
264 adapter->temp_dcb_cfg.tc_config[priority].dcb_pfc = setting;
265 if (adapter->temp_dcb_cfg.tc_config[priority].dcb_pfc !=
266 adapter->dcb_cfg.tc_config[priority].dcb_pfc)
267 adapter->temp_dcb_cfg.pfc_mode_enable = true;
268 }
269
270 static void ixgbe_dcbnl_get_pfc_cfg(struct net_device *netdev, int priority,
271 u8 *setting)
272 {
273 struct ixgbe_adapter *adapter = netdev_priv(netdev);
274
275 *setting = adapter->dcb_cfg.tc_config[priority].dcb_pfc;
276 }
277
278 static void ixgbe_dcbnl_devreset(struct net_device *dev)
279 {
280 struct ixgbe_adapter *adapter = netdev_priv(dev);
281
282 while (test_and_set_bit(__IXGBE_RESETTING, &adapter->state))
283 usleep_range(1000, 2000);
284
285 if (netif_running(dev))
286 dev->netdev_ops->ndo_stop(dev);
287
288 ixgbe_clear_interrupt_scheme(adapter);
289 ixgbe_init_interrupt_scheme(adapter);
290
291 if (netif_running(dev))
292 dev->netdev_ops->ndo_open(dev);
293
294 clear_bit(__IXGBE_RESETTING, &adapter->state);
295 }
296
297 static u8 ixgbe_dcbnl_set_all(struct net_device *netdev)
298 {
299 struct ixgbe_adapter *adapter = netdev_priv(netdev);
300 struct ixgbe_dcb_config *dcb_cfg = &adapter->dcb_cfg;
301 struct ixgbe_hw *hw = &adapter->hw;
302 int ret = DCB_NO_HW_CHG;
303 int i;
304
305 /* Fail command if not in CEE mode */
306 if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE))
307 return DCB_NO_HW_CHG;
308
309 adapter->dcb_set_bitmap |= ixgbe_copy_dcb_cfg(adapter,
310 MAX_TRAFFIC_CLASS);
311 if (!adapter->dcb_set_bitmap)
312 return DCB_NO_HW_CHG;
313
314 if (adapter->dcb_set_bitmap & (BIT_PG_TX|BIT_PG_RX)) {
315 u16 refill[MAX_TRAFFIC_CLASS], max[MAX_TRAFFIC_CLASS];
316 u8 bwg_id[MAX_TRAFFIC_CLASS], prio_type[MAX_TRAFFIC_CLASS];
317 /* Priority to TC mapping in CEE case default to 1:1 */
318 u8 prio_tc[MAX_USER_PRIORITY];
319 int max_frame = adapter->netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
320
321 #ifdef IXGBE_FCOE
322 if (adapter->netdev->features & NETIF_F_FCOE_MTU)
323 max_frame = max(max_frame, IXGBE_FCOE_JUMBO_FRAME_SIZE);
324 #endif
325
326 ixgbe_dcb_calculate_tc_credits(hw, dcb_cfg, max_frame,
327 DCB_TX_CONFIG);
328 ixgbe_dcb_calculate_tc_credits(hw, dcb_cfg, max_frame,
329 DCB_RX_CONFIG);
330
331 ixgbe_dcb_unpack_refill(dcb_cfg, DCB_TX_CONFIG, refill);
332 ixgbe_dcb_unpack_max(dcb_cfg, max);
333 ixgbe_dcb_unpack_bwgid(dcb_cfg, DCB_TX_CONFIG, bwg_id);
334 ixgbe_dcb_unpack_prio(dcb_cfg, DCB_TX_CONFIG, prio_type);
335 ixgbe_dcb_unpack_map(dcb_cfg, DCB_TX_CONFIG, prio_tc);
336
337 ixgbe_dcb_hw_ets_config(hw, refill, max, bwg_id,
338 prio_type, prio_tc);
339
340 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
341 netdev_set_prio_tc_map(netdev, i, prio_tc[i]);
342
343 ret = DCB_HW_CHG_RST;
344 }
345
346 if (adapter->dcb_set_bitmap & BIT_PFC) {
347 if (dcb_cfg->pfc_mode_enable) {
348 u8 pfc_en;
349 u8 prio_tc[MAX_USER_PRIORITY];
350
351 ixgbe_dcb_unpack_map(dcb_cfg, DCB_TX_CONFIG, prio_tc);
352 ixgbe_dcb_unpack_pfc(dcb_cfg, &pfc_en);
353 ixgbe_dcb_hw_pfc_config(hw, pfc_en, prio_tc);
354 } else {
355 hw->mac.ops.fc_enable(hw);
356 }
357
358 ixgbe_set_rx_drop_en(adapter);
359
360 ret = DCB_HW_CHG;
361 }
362
363 #ifdef IXGBE_FCOE
364 /* Reprogam FCoE hardware offloads when the traffic class
365 * FCoE is using changes. This happens if the APP info
366 * changes or the up2tc mapping is updated.
367 */
368 if (adapter->dcb_set_bitmap & BIT_APP_UPCHG) {
369 struct dcb_app app = {
370 .selector = DCB_APP_IDTYPE_ETHTYPE,
371 .protocol = ETH_P_FCOE,
372 };
373 u8 up = dcb_getapp(netdev, &app);
374
375 adapter->fcoe.up = ffs(up) - 1;
376 ixgbe_dcbnl_devreset(netdev);
377 ret = DCB_HW_CHG_RST;
378 }
379 #endif
380
381 adapter->dcb_set_bitmap = 0x00;
382 return ret;
383 }
384
385 static u8 ixgbe_dcbnl_getcap(struct net_device *netdev, int capid, u8 *cap)
386 {
387 struct ixgbe_adapter *adapter = netdev_priv(netdev);
388
389 switch (capid) {
390 case DCB_CAP_ATTR_PG:
391 *cap = true;
392 break;
393 case DCB_CAP_ATTR_PFC:
394 *cap = true;
395 break;
396 case DCB_CAP_ATTR_UP2TC:
397 *cap = false;
398 break;
399 case DCB_CAP_ATTR_PG_TCS:
400 *cap = 0x80;
401 break;
402 case DCB_CAP_ATTR_PFC_TCS:
403 *cap = 0x80;
404 break;
405 case DCB_CAP_ATTR_GSP:
406 *cap = true;
407 break;
408 case DCB_CAP_ATTR_BCN:
409 *cap = false;
410 break;
411 case DCB_CAP_ATTR_DCBX:
412 *cap = adapter->dcbx_cap;
413 break;
414 default:
415 *cap = false;
416 break;
417 }
418
419 return 0;
420 }
421
422 static int ixgbe_dcbnl_getnumtcs(struct net_device *netdev, int tcid, u8 *num)
423 {
424 struct ixgbe_adapter *adapter = netdev_priv(netdev);
425
426 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
427 switch (tcid) {
428 case DCB_NUMTCS_ATTR_PG:
429 *num = adapter->dcb_cfg.num_tcs.pg_tcs;
430 break;
431 case DCB_NUMTCS_ATTR_PFC:
432 *num = adapter->dcb_cfg.num_tcs.pfc_tcs;
433 break;
434 default:
435 return -EINVAL;
436 }
437 } else {
438 return -EINVAL;
439 }
440
441 return 0;
442 }
443
444 static int ixgbe_dcbnl_setnumtcs(struct net_device *netdev, int tcid, u8 num)
445 {
446 return -EINVAL;
447 }
448
449 static u8 ixgbe_dcbnl_getpfcstate(struct net_device *netdev)
450 {
451 struct ixgbe_adapter *adapter = netdev_priv(netdev);
452
453 return adapter->dcb_cfg.pfc_mode_enable;
454 }
455
456 static void ixgbe_dcbnl_setpfcstate(struct net_device *netdev, u8 state)
457 {
458 struct ixgbe_adapter *adapter = netdev_priv(netdev);
459
460 adapter->temp_dcb_cfg.pfc_mode_enable = state;
461 }
462
463 /**
464 * ixgbe_dcbnl_getapp - retrieve the DCBX application user priority
465 * @netdev : the corresponding netdev
466 * @idtype : identifies the id as ether type or TCP/UDP port number
467 * @id: id is either ether type or TCP/UDP port number
468 *
469 * Returns : on success, returns a non-zero 802.1p user priority bitmap
470 * otherwise returns -EINVAL as the invalid user priority bitmap to indicate an
471 * error.
472 */
473 static int ixgbe_dcbnl_getapp(struct net_device *netdev, u8 idtype, u16 id)
474 {
475 struct ixgbe_adapter *adapter = netdev_priv(netdev);
476 struct dcb_app app = {
477 .selector = idtype,
478 .protocol = id,
479 };
480
481 if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE))
482 return -EINVAL;
483
484 return dcb_getapp(netdev, &app);
485 }
486
487 static int ixgbe_dcbnl_ieee_getets(struct net_device *dev,
488 struct ieee_ets *ets)
489 {
490 struct ixgbe_adapter *adapter = netdev_priv(dev);
491 struct ieee_ets *my_ets = adapter->ixgbe_ieee_ets;
492
493 ets->ets_cap = adapter->dcb_cfg.num_tcs.pg_tcs;
494
495 /* No IEEE PFC settings available */
496 if (!my_ets)
497 return 0;
498
499 ets->cbs = my_ets->cbs;
500 memcpy(ets->tc_tx_bw, my_ets->tc_tx_bw, sizeof(ets->tc_tx_bw));
501 memcpy(ets->tc_rx_bw, my_ets->tc_rx_bw, sizeof(ets->tc_rx_bw));
502 memcpy(ets->tc_tsa, my_ets->tc_tsa, sizeof(ets->tc_tsa));
503 memcpy(ets->prio_tc, my_ets->prio_tc, sizeof(ets->prio_tc));
504 return 0;
505 }
506
507 static int ixgbe_dcbnl_ieee_setets(struct net_device *dev,
508 struct ieee_ets *ets)
509 {
510 struct ixgbe_adapter *adapter = netdev_priv(dev);
511 int max_frame = dev->mtu + ETH_HLEN + ETH_FCS_LEN;
512 int i, err;
513 __u8 max_tc = 0;
514 __u8 map_chg = 0;
515
516 if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
517 return -EINVAL;
518
519 if (!adapter->ixgbe_ieee_ets) {
520 adapter->ixgbe_ieee_ets = kmalloc(sizeof(struct ieee_ets),
521 GFP_KERNEL);
522 if (!adapter->ixgbe_ieee_ets)
523 return -ENOMEM;
524
525 /* initialize UP2TC mappings to invalid value */
526 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
527 adapter->ixgbe_ieee_ets->prio_tc[i] =
528 IEEE_8021QAZ_MAX_TCS;
529 /* if possible update UP2TC mappings from HW */
530 ixgbe_dcb_read_rtrup2tc(&adapter->hw,
531 adapter->ixgbe_ieee_ets->prio_tc);
532 }
533
534 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
535 if (ets->prio_tc[i] > max_tc)
536 max_tc = ets->prio_tc[i];
537 if (ets->prio_tc[i] != adapter->ixgbe_ieee_ets->prio_tc[i])
538 map_chg = 1;
539 }
540
541 memcpy(adapter->ixgbe_ieee_ets, ets, sizeof(*adapter->ixgbe_ieee_ets));
542
543 if (max_tc)
544 max_tc++;
545
546 if (max_tc > adapter->dcb_cfg.num_tcs.pg_tcs)
547 return -EINVAL;
548
549 if (max_tc != adapter->hw_tcs) {
550 err = ixgbe_setup_tc(dev, max_tc);
551 if (err)
552 return err;
553 } else if (map_chg) {
554 ixgbe_dcbnl_devreset(dev);
555 }
556
557 return ixgbe_dcb_hw_ets(&adapter->hw, ets, max_frame);
558 }
559
560 static int ixgbe_dcbnl_ieee_getpfc(struct net_device *dev,
561 struct ieee_pfc *pfc)
562 {
563 struct ixgbe_adapter *adapter = netdev_priv(dev);
564 struct ieee_pfc *my_pfc = adapter->ixgbe_ieee_pfc;
565 int i;
566
567 pfc->pfc_cap = adapter->dcb_cfg.num_tcs.pfc_tcs;
568
569 /* No IEEE PFC settings available */
570 if (!my_pfc)
571 return 0;
572
573 pfc->pfc_en = my_pfc->pfc_en;
574 pfc->mbc = my_pfc->mbc;
575 pfc->delay = my_pfc->delay;
576
577 for (i = 0; i < MAX_TRAFFIC_CLASS; i++) {
578 pfc->requests[i] = adapter->stats.pxoffrxc[i];
579 pfc->indications[i] = adapter->stats.pxofftxc[i];
580 }
581
582 return 0;
583 }
584
585 static int ixgbe_dcbnl_ieee_setpfc(struct net_device *dev,
586 struct ieee_pfc *pfc)
587 {
588 struct ixgbe_adapter *adapter = netdev_priv(dev);
589 struct ixgbe_hw *hw = &adapter->hw;
590 u8 *prio_tc;
591 int err;
592
593 if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
594 return -EINVAL;
595
596 if (!adapter->ixgbe_ieee_pfc) {
597 adapter->ixgbe_ieee_pfc = kmalloc(sizeof(struct ieee_pfc),
598 GFP_KERNEL);
599 if (!adapter->ixgbe_ieee_pfc)
600 return -ENOMEM;
601 }
602
603 prio_tc = adapter->ixgbe_ieee_ets->prio_tc;
604 memcpy(adapter->ixgbe_ieee_pfc, pfc, sizeof(*adapter->ixgbe_ieee_pfc));
605
606 /* Enable link flow control parameters if PFC is disabled */
607 if (pfc->pfc_en)
608 err = ixgbe_dcb_hw_pfc_config(hw, pfc->pfc_en, prio_tc);
609 else
610 err = hw->mac.ops.fc_enable(hw);
611
612 ixgbe_set_rx_drop_en(adapter);
613
614 return err;
615 }
616
617 static int ixgbe_dcbnl_ieee_setapp(struct net_device *dev,
618 struct dcb_app *app)
619 {
620 struct ixgbe_adapter *adapter = netdev_priv(dev);
621 int err;
622
623 if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
624 return -EINVAL;
625
626 err = dcb_ieee_setapp(dev, app);
627 if (err)
628 return err;
629
630 #ifdef IXGBE_FCOE
631 if (app->selector == IEEE_8021QAZ_APP_SEL_ETHERTYPE &&
632 app->protocol == ETH_P_FCOE) {
633 u8 app_mask = dcb_ieee_getapp_mask(dev, app);
634
635 if (app_mask & BIT(adapter->fcoe.up))
636 return 0;
637
638 adapter->fcoe.up = app->priority;
639 ixgbe_dcbnl_devreset(dev);
640 }
641 #endif
642
643 /* VF devices should use default UP when available */
644 if (app->selector == IEEE_8021QAZ_APP_SEL_ETHERTYPE &&
645 app->protocol == 0) {
646 int vf;
647
648 adapter->default_up = app->priority;
649
650 for (vf = 0; vf < adapter->num_vfs; vf++) {
651 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf];
652
653 if (!vfinfo->pf_qos)
654 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan,
655 app->priority, vf);
656 }
657 }
658
659 return 0;
660 }
661
662 static int ixgbe_dcbnl_ieee_delapp(struct net_device *dev,
663 struct dcb_app *app)
664 {
665 struct ixgbe_adapter *adapter = netdev_priv(dev);
666 int err;
667
668 if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
669 return -EINVAL;
670
671 err = dcb_ieee_delapp(dev, app);
672
673 #ifdef IXGBE_FCOE
674 if (!err && app->selector == IEEE_8021QAZ_APP_SEL_ETHERTYPE &&
675 app->protocol == ETH_P_FCOE) {
676 u8 app_mask = dcb_ieee_getapp_mask(dev, app);
677
678 if (app_mask & BIT(adapter->fcoe.up))
679 return 0;
680
681 adapter->fcoe.up = app_mask ?
682 ffs(app_mask) - 1 : IXGBE_FCOE_DEFTC;
683 ixgbe_dcbnl_devreset(dev);
684 }
685 #endif
686 /* IF default priority is being removed clear VF default UP */
687 if (app->selector == IEEE_8021QAZ_APP_SEL_ETHERTYPE &&
688 app->protocol == 0 && adapter->default_up == app->priority) {
689 int vf;
690 long unsigned int app_mask = dcb_ieee_getapp_mask(dev, app);
691 int qos = app_mask ? find_first_bit(&app_mask, 8) : 0;
692
693 adapter->default_up = qos;
694
695 for (vf = 0; vf < adapter->num_vfs; vf++) {
696 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf];
697
698 if (!vfinfo->pf_qos)
699 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan,
700 qos, vf);
701 }
702 }
703
704 return err;
705 }
706
707 static u8 ixgbe_dcbnl_getdcbx(struct net_device *dev)
708 {
709 struct ixgbe_adapter *adapter = netdev_priv(dev);
710 return adapter->dcbx_cap;
711 }
712
713 static u8 ixgbe_dcbnl_setdcbx(struct net_device *dev, u8 mode)
714 {
715 struct ixgbe_adapter *adapter = netdev_priv(dev);
716 struct ieee_ets ets = {0};
717 struct ieee_pfc pfc = {0};
718 int err = 0;
719
720 /* no support for LLD_MANAGED modes or CEE+IEEE */
721 if ((mode & DCB_CAP_DCBX_LLD_MANAGED) ||
722 ((mode & DCB_CAP_DCBX_VER_IEEE) && (mode & DCB_CAP_DCBX_VER_CEE)) ||
723 !(mode & DCB_CAP_DCBX_HOST))
724 return 1;
725
726 if (mode == adapter->dcbx_cap)
727 return 0;
728
729 adapter->dcbx_cap = mode;
730
731 /* ETS and PFC defaults */
732 ets.ets_cap = 8;
733 pfc.pfc_cap = 8;
734
735 if (mode & DCB_CAP_DCBX_VER_IEEE) {
736 ixgbe_dcbnl_ieee_setets(dev, &ets);
737 ixgbe_dcbnl_ieee_setpfc(dev, &pfc);
738 } else if (mode & DCB_CAP_DCBX_VER_CEE) {
739 u8 mask = BIT_PFC | BIT_PG_TX | BIT_PG_RX | BIT_APP_UPCHG;
740
741 adapter->dcb_set_bitmap |= mask;
742 ixgbe_dcbnl_set_all(dev);
743 } else {
744 /* Drop into single TC mode strict priority as this
745 * indicates CEE and IEEE versions are disabled
746 */
747 ixgbe_dcbnl_ieee_setets(dev, &ets);
748 ixgbe_dcbnl_ieee_setpfc(dev, &pfc);
749 err = ixgbe_setup_tc(dev, 0);
750 }
751
752 return err ? 1 : 0;
753 }
754
755 const struct dcbnl_rtnl_ops ixgbe_dcbnl_ops = {
756 .ieee_getets = ixgbe_dcbnl_ieee_getets,
757 .ieee_setets = ixgbe_dcbnl_ieee_setets,
758 .ieee_getpfc = ixgbe_dcbnl_ieee_getpfc,
759 .ieee_setpfc = ixgbe_dcbnl_ieee_setpfc,
760 .ieee_setapp = ixgbe_dcbnl_ieee_setapp,
761 .ieee_delapp = ixgbe_dcbnl_ieee_delapp,
762 .getstate = ixgbe_dcbnl_get_state,
763 .setstate = ixgbe_dcbnl_set_state,
764 .getpermhwaddr = ixgbe_dcbnl_get_perm_hw_addr,
765 .setpgtccfgtx = ixgbe_dcbnl_set_pg_tc_cfg_tx,
766 .setpgbwgcfgtx = ixgbe_dcbnl_set_pg_bwg_cfg_tx,
767 .setpgtccfgrx = ixgbe_dcbnl_set_pg_tc_cfg_rx,
768 .setpgbwgcfgrx = ixgbe_dcbnl_set_pg_bwg_cfg_rx,
769 .getpgtccfgtx = ixgbe_dcbnl_get_pg_tc_cfg_tx,
770 .getpgbwgcfgtx = ixgbe_dcbnl_get_pg_bwg_cfg_tx,
771 .getpgtccfgrx = ixgbe_dcbnl_get_pg_tc_cfg_rx,
772 .getpgbwgcfgrx = ixgbe_dcbnl_get_pg_bwg_cfg_rx,
773 .setpfccfg = ixgbe_dcbnl_set_pfc_cfg,
774 .getpfccfg = ixgbe_dcbnl_get_pfc_cfg,
775 .setall = ixgbe_dcbnl_set_all,
776 .getcap = ixgbe_dcbnl_getcap,
777 .getnumtcs = ixgbe_dcbnl_getnumtcs,
778 .setnumtcs = ixgbe_dcbnl_setnumtcs,
779 .getpfcstate = ixgbe_dcbnl_getpfcstate,
780 .setpfcstate = ixgbe_dcbnl_setpfcstate,
781 .getapp = ixgbe_dcbnl_getapp,
782 .getdcbx = ixgbe_dcbnl_getdcbx,
783 .setdcbx = ixgbe_dcbnl_setdcbx,
784 };
Linux with added FPC-III support