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