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
ixgbe_copy_dcb_cfg(struct ixgbe_adapter * adapter,int tc_max)21 static 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
ixgbe_dcbnl_get_state(struct net_device * netdev)119 static 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
ixgbe_dcbnl_set_state(struct net_device * netdev,u8 state)126 static 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
ixgbe_dcbnl_get_perm_hw_addr(struct net_device * netdev,u8 * perm_addr)142 static 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
ixgbe_dcbnl_set_pg_tc_cfg_tx(struct net_device * netdev,int tc,u8 prio,u8 bwg_id,u8 bw_pct,u8 up_map)165 static 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
ixgbe_dcbnl_set_pg_bwg_cfg_tx(struct net_device * netdev,int bwg_id,u8 bw_pct)183 static 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
ixgbe_dcbnl_set_pg_tc_cfg_rx(struct net_device * netdev,int tc,u8 prio,u8 bwg_id,u8 bw_pct,u8 up_map)191 static 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
ixgbe_dcbnl_set_pg_bwg_cfg_rx(struct net_device * netdev,int bwg_id,u8 bw_pct)209 static 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
ixgbe_dcbnl_get_pg_tc_cfg_tx(struct net_device * netdev,int tc,u8 * prio,u8 * bwg_id,u8 * bw_pct,u8 * up_map)217 static 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
ixgbe_dcbnl_get_pg_bwg_cfg_tx(struct net_device * netdev,int bwg_id,u8 * bw_pct)229 static 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
ixgbe_dcbnl_get_pg_tc_cfg_rx(struct net_device * netdev,int tc,u8 * prio,u8 * bwg_id,u8 * bw_pct,u8 * up_map)237 static 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
ixgbe_dcbnl_get_pg_bwg_cfg_rx(struct net_device * netdev,int bwg_id,u8 * bw_pct)249 static 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
ixgbe_dcbnl_set_pfc_cfg(struct net_device * netdev,int priority,u8 setting)257 static 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
ixgbe_dcbnl_get_pfc_cfg(struct net_device * netdev,int priority,u8 * setting)268 static 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
ixgbe_dcbnl_devreset(struct net_device * dev)276 static 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
ixgbe_dcbnl_set_all(struct net_device * netdev)295 static 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->features & NETIF_F_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
ixgbe_dcbnl_getcap(struct net_device * netdev,int capid,u8 * cap)383 static 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
ixgbe_dcbnl_getnumtcs(struct net_device * netdev,int tcid,u8 * num)420 static 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
ixgbe_dcbnl_setnumtcs(struct net_device * netdev,int tcid,u8 num)442 static int ixgbe_dcbnl_setnumtcs(struct net_device *netdev, int tcid, u8 num)
443 {
444 return -EINVAL;
445 }
446
ixgbe_dcbnl_getpfcstate(struct net_device * netdev)447 static 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
ixgbe_dcbnl_setpfcstate(struct net_device * netdev,u8 state)454 static 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 */
ixgbe_dcbnl_getapp(struct net_device * netdev,u8 idtype,u16 id)471 static 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
ixgbe_dcbnl_ieee_getets(struct net_device * dev,struct ieee_ets * ets)485 static 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
ixgbe_dcbnl_ieee_setets(struct net_device * dev,struct ieee_ets * ets)505 static 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
ixgbe_dcbnl_ieee_getpfc(struct net_device * dev,struct ieee_pfc * pfc)558 static 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
ixgbe_dcbnl_ieee_setpfc(struct net_device * dev,struct ieee_pfc * pfc)583 static 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
ixgbe_dcbnl_ieee_setapp(struct net_device * dev,struct dcb_app * app)615 static 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
ixgbe_dcbnl_ieee_delapp(struct net_device * dev,struct dcb_app * app)660 static 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
ixgbe_dcbnl_getdcbx(struct net_device * dev)705 static u8 ixgbe_dcbnl_getdcbx(struct net_device *dev)
706 {
707 struct ixgbe_adapter *adapter = netdev_priv(dev);
708 return adapter->dcbx_cap;
709 }
710
ixgbe_dcbnl_setdcbx(struct net_device * dev,u8 mode)711 static 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
753 const 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 };
783