1 /*******************************************************************************
2
3 Intel 10 Gigabit PCI Express Linux driver
4 Copyright(c) 1999 - 2014 Intel Corporation.
5
6 This program is free software; you can redistribute it and/or modify it
7 under the terms and conditions of the GNU General Public License,
8 version 2, as published by the Free Software Foundation.
9
10 This program is distributed in the hope it will be useful, but WITHOUT
11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
13 more details.
14
15 You should have received a copy of the GNU General Public License along with
16 this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
18
19 The full GNU General Public License is included in this distribution in
20 the file called "COPYING".
21
22 Contact Information:
23 Linux NICS <linux.nics@intel.com>
24 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
25 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
26
27 *******************************************************************************/
28
29 #include "ixgbe.h"
30 #include <linux/dcbnl.h>
31 #include "ixgbe_dcb_82598.h"
32 #include "ixgbe_dcb_82599.h"
33 #include "ixgbe_sriov.h"
34
35 /* Callbacks for DCB netlink in the kernel */
36 #define BIT_DCB_MODE 0x01
37 #define BIT_PFC 0x02
38 #define BIT_PG_RX 0x04
39 #define BIT_PG_TX 0x08
40 #define BIT_APP_UPCHG 0x10
41 #define BIT_LINKSPEED 0x80
42
43 /* Responses for the DCB_C_SET_ALL command */
44 #define DCB_HW_CHG_RST 0 /* DCB configuration changed with reset */
45 #define DCB_NO_HW_CHG 1 /* DCB configuration did not change */
46 #define DCB_HW_CHG 2 /* DCB configuration changed, no reset */
47
ixgbe_copy_dcb_cfg(struct ixgbe_adapter * adapter,int tc_max)48 static int ixgbe_copy_dcb_cfg(struct ixgbe_adapter *adapter, int tc_max)
49 {
50 struct ixgbe_dcb_config *scfg = &adapter->temp_dcb_cfg;
51 struct ixgbe_dcb_config *dcfg = &adapter->dcb_cfg;
52 struct tc_configuration *src = NULL;
53 struct tc_configuration *dst = NULL;
54 int i, j;
55 int tx = DCB_TX_CONFIG;
56 int rx = DCB_RX_CONFIG;
57 int changes = 0;
58 #ifdef IXGBE_FCOE
59 struct dcb_app app = {
60 .selector = DCB_APP_IDTYPE_ETHTYPE,
61 .protocol = ETH_P_FCOE,
62 };
63 u8 up = dcb_getapp(adapter->netdev, &app);
64
65 if (up && !(up & (1 << adapter->fcoe.up)))
66 changes |= BIT_APP_UPCHG;
67 #endif
68
69 for (i = DCB_PG_ATTR_TC_0; i < tc_max + DCB_PG_ATTR_TC_0; i++) {
70 src = &scfg->tc_config[i - DCB_PG_ATTR_TC_0];
71 dst = &dcfg->tc_config[i - DCB_PG_ATTR_TC_0];
72
73 if (dst->path[tx].prio_type != src->path[tx].prio_type) {
74 dst->path[tx].prio_type = src->path[tx].prio_type;
75 changes |= BIT_PG_TX;
76 }
77
78 if (dst->path[tx].bwg_id != src->path[tx].bwg_id) {
79 dst->path[tx].bwg_id = src->path[tx].bwg_id;
80 changes |= BIT_PG_TX;
81 }
82
83 if (dst->path[tx].bwg_percent != src->path[tx].bwg_percent) {
84 dst->path[tx].bwg_percent = src->path[tx].bwg_percent;
85 changes |= BIT_PG_TX;
86 }
87
88 if (dst->path[tx].up_to_tc_bitmap !=
89 src->path[tx].up_to_tc_bitmap) {
90 dst->path[tx].up_to_tc_bitmap =
91 src->path[tx].up_to_tc_bitmap;
92 changes |= (BIT_PG_TX | BIT_PFC | BIT_APP_UPCHG);
93 }
94
95 if (dst->path[rx].prio_type != src->path[rx].prio_type) {
96 dst->path[rx].prio_type = src->path[rx].prio_type;
97 changes |= BIT_PG_RX;
98 }
99
100 if (dst->path[rx].bwg_id != src->path[rx].bwg_id) {
101 dst->path[rx].bwg_id = src->path[rx].bwg_id;
102 changes |= BIT_PG_RX;
103 }
104
105 if (dst->path[rx].bwg_percent != src->path[rx].bwg_percent) {
106 dst->path[rx].bwg_percent = src->path[rx].bwg_percent;
107 changes |= BIT_PG_RX;
108 }
109
110 if (dst->path[rx].up_to_tc_bitmap !=
111 src->path[rx].up_to_tc_bitmap) {
112 dst->path[rx].up_to_tc_bitmap =
113 src->path[rx].up_to_tc_bitmap;
114 changes |= (BIT_PG_RX | BIT_PFC | BIT_APP_UPCHG);
115 }
116 }
117
118 for (i = DCB_PG_ATTR_BW_ID_0; i < DCB_PG_ATTR_BW_ID_MAX; i++) {
119 j = i - DCB_PG_ATTR_BW_ID_0;
120 if (dcfg->bw_percentage[tx][j] != scfg->bw_percentage[tx][j]) {
121 dcfg->bw_percentage[tx][j] = scfg->bw_percentage[tx][j];
122 changes |= BIT_PG_TX;
123 }
124 if (dcfg->bw_percentage[rx][j] != scfg->bw_percentage[rx][j]) {
125 dcfg->bw_percentage[rx][j] = scfg->bw_percentage[rx][j];
126 changes |= BIT_PG_RX;
127 }
128 }
129
130 for (i = DCB_PFC_UP_ATTR_0; i < DCB_PFC_UP_ATTR_MAX; i++) {
131 j = i - DCB_PFC_UP_ATTR_0;
132 if (dcfg->tc_config[j].dcb_pfc != scfg->tc_config[j].dcb_pfc) {
133 dcfg->tc_config[j].dcb_pfc = scfg->tc_config[j].dcb_pfc;
134 changes |= BIT_PFC;
135 }
136 }
137
138 if (dcfg->pfc_mode_enable != scfg->pfc_mode_enable) {
139 dcfg->pfc_mode_enable = scfg->pfc_mode_enable;
140 changes |= BIT_PFC;
141 }
142
143 return changes;
144 }
145
ixgbe_dcbnl_get_state(struct net_device * netdev)146 static u8 ixgbe_dcbnl_get_state(struct net_device *netdev)
147 {
148 struct ixgbe_adapter *adapter = netdev_priv(netdev);
149
150 return !!(adapter->flags & IXGBE_FLAG_DCB_ENABLED);
151 }
152
ixgbe_dcbnl_set_state(struct net_device * netdev,u8 state)153 static u8 ixgbe_dcbnl_set_state(struct net_device *netdev, u8 state)
154 {
155 struct ixgbe_adapter *adapter = netdev_priv(netdev);
156
157 /* Fail command if not in CEE mode */
158 if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE))
159 return 1;
160
161 /* verify there is something to do, if not then exit */
162 if (!state == !(adapter->flags & IXGBE_FLAG_DCB_ENABLED))
163 return 0;
164
165 return !!ixgbe_setup_tc(netdev,
166 state ? adapter->dcb_cfg.num_tcs.pg_tcs : 0);
167 }
168
ixgbe_dcbnl_get_perm_hw_addr(struct net_device * netdev,u8 * perm_addr)169 static void ixgbe_dcbnl_get_perm_hw_addr(struct net_device *netdev,
170 u8 *perm_addr)
171 {
172 struct ixgbe_adapter *adapter = netdev_priv(netdev);
173 int i, j;
174
175 memset(perm_addr, 0xff, MAX_ADDR_LEN);
176
177 for (i = 0; i < netdev->addr_len; i++)
178 perm_addr[i] = adapter->hw.mac.perm_addr[i];
179
180 switch (adapter->hw.mac.type) {
181 case ixgbe_mac_82599EB:
182 case ixgbe_mac_X540:
183 for (j = 0; j < netdev->addr_len; j++, i++)
184 perm_addr[i] = adapter->hw.mac.san_addr[j];
185 break;
186 default:
187 break;
188 }
189 }
190
ixgbe_dcbnl_set_pg_tc_cfg_tx(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_tx(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[0].prio_type = prio;
199 if (bwg_id != DCB_ATTR_VALUE_UNDEFINED)
200 adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_id = bwg_id;
201 if (bw_pct != DCB_ATTR_VALUE_UNDEFINED)
202 adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_percent =
203 bw_pct;
204 if (up_map != DCB_ATTR_VALUE_UNDEFINED)
205 adapter->temp_dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap =
206 up_map;
207 }
208
ixgbe_dcbnl_set_pg_bwg_cfg_tx(struct net_device * netdev,int bwg_id,u8 bw_pct)209 static void ixgbe_dcbnl_set_pg_bwg_cfg_tx(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[0][bwg_id] = bw_pct;
215 }
216
ixgbe_dcbnl_set_pg_tc_cfg_rx(struct net_device * netdev,int tc,u8 prio,u8 bwg_id,u8 bw_pct,u8 up_map)217 static void ixgbe_dcbnl_set_pg_tc_cfg_rx(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 if (prio != DCB_ATTR_VALUE_UNDEFINED)
224 adapter->temp_dcb_cfg.tc_config[tc].path[1].prio_type = prio;
225 if (bwg_id != DCB_ATTR_VALUE_UNDEFINED)
226 adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_id = bwg_id;
227 if (bw_pct != DCB_ATTR_VALUE_UNDEFINED)
228 adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_percent =
229 bw_pct;
230 if (up_map != DCB_ATTR_VALUE_UNDEFINED)
231 adapter->temp_dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap =
232 up_map;
233 }
234
ixgbe_dcbnl_set_pg_bwg_cfg_rx(struct net_device * netdev,int bwg_id,u8 bw_pct)235 static void ixgbe_dcbnl_set_pg_bwg_cfg_rx(struct net_device *netdev, int bwg_id,
236 u8 bw_pct)
237 {
238 struct ixgbe_adapter *adapter = netdev_priv(netdev);
239
240 adapter->temp_dcb_cfg.bw_percentage[1][bwg_id] = bw_pct;
241 }
242
ixgbe_dcbnl_get_pg_tc_cfg_tx(struct net_device * netdev,int tc,u8 * prio,u8 * bwg_id,u8 * bw_pct,u8 * up_map)243 static void ixgbe_dcbnl_get_pg_tc_cfg_tx(struct net_device *netdev, int tc,
244 u8 *prio, u8 *bwg_id, u8 *bw_pct,
245 u8 *up_map)
246 {
247 struct ixgbe_adapter *adapter = netdev_priv(netdev);
248
249 *prio = adapter->dcb_cfg.tc_config[tc].path[0].prio_type;
250 *bwg_id = adapter->dcb_cfg.tc_config[tc].path[0].bwg_id;
251 *bw_pct = adapter->dcb_cfg.tc_config[tc].path[0].bwg_percent;
252 *up_map = adapter->dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap;
253 }
254
ixgbe_dcbnl_get_pg_bwg_cfg_tx(struct net_device * netdev,int bwg_id,u8 * bw_pct)255 static void ixgbe_dcbnl_get_pg_bwg_cfg_tx(struct net_device *netdev, int bwg_id,
256 u8 *bw_pct)
257 {
258 struct ixgbe_adapter *adapter = netdev_priv(netdev);
259
260 *bw_pct = adapter->dcb_cfg.bw_percentage[0][bwg_id];
261 }
262
ixgbe_dcbnl_get_pg_tc_cfg_rx(struct net_device * netdev,int tc,u8 * prio,u8 * bwg_id,u8 * bw_pct,u8 * up_map)263 static void ixgbe_dcbnl_get_pg_tc_cfg_rx(struct net_device *netdev, int tc,
264 u8 *prio, u8 *bwg_id, u8 *bw_pct,
265 u8 *up_map)
266 {
267 struct ixgbe_adapter *adapter = netdev_priv(netdev);
268
269 *prio = adapter->dcb_cfg.tc_config[tc].path[1].prio_type;
270 *bwg_id = adapter->dcb_cfg.tc_config[tc].path[1].bwg_id;
271 *bw_pct = adapter->dcb_cfg.tc_config[tc].path[1].bwg_percent;
272 *up_map = adapter->dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap;
273 }
274
ixgbe_dcbnl_get_pg_bwg_cfg_rx(struct net_device * netdev,int bwg_id,u8 * bw_pct)275 static void ixgbe_dcbnl_get_pg_bwg_cfg_rx(struct net_device *netdev, int bwg_id,
276 u8 *bw_pct)
277 {
278 struct ixgbe_adapter *adapter = netdev_priv(netdev);
279
280 *bw_pct = adapter->dcb_cfg.bw_percentage[1][bwg_id];
281 }
282
ixgbe_dcbnl_set_pfc_cfg(struct net_device * netdev,int priority,u8 setting)283 static void ixgbe_dcbnl_set_pfc_cfg(struct net_device *netdev, int priority,
284 u8 setting)
285 {
286 struct ixgbe_adapter *adapter = netdev_priv(netdev);
287
288 adapter->temp_dcb_cfg.tc_config[priority].dcb_pfc = setting;
289 if (adapter->temp_dcb_cfg.tc_config[priority].dcb_pfc !=
290 adapter->dcb_cfg.tc_config[priority].dcb_pfc)
291 adapter->temp_dcb_cfg.pfc_mode_enable = true;
292 }
293
ixgbe_dcbnl_get_pfc_cfg(struct net_device * netdev,int priority,u8 * setting)294 static void ixgbe_dcbnl_get_pfc_cfg(struct net_device *netdev, int priority,
295 u8 *setting)
296 {
297 struct ixgbe_adapter *adapter = netdev_priv(netdev);
298
299 *setting = adapter->dcb_cfg.tc_config[priority].dcb_pfc;
300 }
301
ixgbe_dcbnl_devreset(struct net_device * dev)302 static void ixgbe_dcbnl_devreset(struct net_device *dev)
303 {
304 struct ixgbe_adapter *adapter = netdev_priv(dev);
305
306 while (test_and_set_bit(__IXGBE_RESETTING, &adapter->state))
307 usleep_range(1000, 2000);
308
309 if (netif_running(dev))
310 dev->netdev_ops->ndo_stop(dev);
311
312 ixgbe_clear_interrupt_scheme(adapter);
313 ixgbe_init_interrupt_scheme(adapter);
314
315 if (netif_running(dev))
316 dev->netdev_ops->ndo_open(dev);
317
318 clear_bit(__IXGBE_RESETTING, &adapter->state);
319 }
320
ixgbe_dcbnl_set_all(struct net_device * netdev)321 static u8 ixgbe_dcbnl_set_all(struct net_device *netdev)
322 {
323 struct ixgbe_adapter *adapter = netdev_priv(netdev);
324 struct ixgbe_dcb_config *dcb_cfg = &adapter->dcb_cfg;
325 struct ixgbe_hw *hw = &adapter->hw;
326 int ret = DCB_NO_HW_CHG;
327 int i;
328
329 /* Fail command if not in CEE mode */
330 if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE))
331 return DCB_NO_HW_CHG;
332
333 adapter->dcb_set_bitmap |= ixgbe_copy_dcb_cfg(adapter,
334 MAX_TRAFFIC_CLASS);
335 if (!adapter->dcb_set_bitmap)
336 return DCB_NO_HW_CHG;
337
338 if (adapter->dcb_set_bitmap & (BIT_PG_TX|BIT_PG_RX)) {
339 u16 refill[MAX_TRAFFIC_CLASS], max[MAX_TRAFFIC_CLASS];
340 u8 bwg_id[MAX_TRAFFIC_CLASS], prio_type[MAX_TRAFFIC_CLASS];
341 /* Priority to TC mapping in CEE case default to 1:1 */
342 u8 prio_tc[MAX_USER_PRIORITY];
343 int max_frame = adapter->netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
344
345 #ifdef IXGBE_FCOE
346 if (adapter->netdev->features & NETIF_F_FCOE_MTU)
347 max_frame = max(max_frame, IXGBE_FCOE_JUMBO_FRAME_SIZE);
348 #endif
349
350 ixgbe_dcb_calculate_tc_credits(hw, dcb_cfg, max_frame,
351 DCB_TX_CONFIG);
352 ixgbe_dcb_calculate_tc_credits(hw, dcb_cfg, max_frame,
353 DCB_RX_CONFIG);
354
355 ixgbe_dcb_unpack_refill(dcb_cfg, DCB_TX_CONFIG, refill);
356 ixgbe_dcb_unpack_max(dcb_cfg, max);
357 ixgbe_dcb_unpack_bwgid(dcb_cfg, DCB_TX_CONFIG, bwg_id);
358 ixgbe_dcb_unpack_prio(dcb_cfg, DCB_TX_CONFIG, prio_type);
359 ixgbe_dcb_unpack_map(dcb_cfg, DCB_TX_CONFIG, prio_tc);
360
361 ixgbe_dcb_hw_ets_config(hw, refill, max, bwg_id,
362 prio_type, prio_tc);
363
364 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
365 netdev_set_prio_tc_map(netdev, i, prio_tc[i]);
366
367 ret = DCB_HW_CHG_RST;
368 }
369
370 if (adapter->dcb_set_bitmap & BIT_PFC) {
371 if (dcb_cfg->pfc_mode_enable) {
372 u8 pfc_en;
373 u8 prio_tc[MAX_USER_PRIORITY];
374
375 ixgbe_dcb_unpack_map(dcb_cfg, DCB_TX_CONFIG, prio_tc);
376 ixgbe_dcb_unpack_pfc(dcb_cfg, &pfc_en);
377 ixgbe_dcb_hw_pfc_config(hw, pfc_en, prio_tc);
378 } else {
379 hw->mac.ops.fc_enable(hw);
380 }
381
382 ixgbe_set_rx_drop_en(adapter);
383
384 ret = DCB_HW_CHG;
385 }
386
387 #ifdef IXGBE_FCOE
388 /* Reprogam FCoE hardware offloads when the traffic class
389 * FCoE is using changes. This happens if the APP info
390 * changes or the up2tc mapping is updated.
391 */
392 if (adapter->dcb_set_bitmap & BIT_APP_UPCHG) {
393 struct dcb_app app = {
394 .selector = DCB_APP_IDTYPE_ETHTYPE,
395 .protocol = ETH_P_FCOE,
396 };
397 u8 up = dcb_getapp(netdev, &app);
398
399 adapter->fcoe.up = ffs(up) - 1;
400 ixgbe_dcbnl_devreset(netdev);
401 ret = DCB_HW_CHG_RST;
402 }
403 #endif
404
405 adapter->dcb_set_bitmap = 0x00;
406 return ret;
407 }
408
ixgbe_dcbnl_getcap(struct net_device * netdev,int capid,u8 * cap)409 static u8 ixgbe_dcbnl_getcap(struct net_device *netdev, int capid, u8 *cap)
410 {
411 struct ixgbe_adapter *adapter = netdev_priv(netdev);
412
413 switch (capid) {
414 case DCB_CAP_ATTR_PG:
415 *cap = true;
416 break;
417 case DCB_CAP_ATTR_PFC:
418 *cap = true;
419 break;
420 case DCB_CAP_ATTR_UP2TC:
421 *cap = false;
422 break;
423 case DCB_CAP_ATTR_PG_TCS:
424 *cap = 0x80;
425 break;
426 case DCB_CAP_ATTR_PFC_TCS:
427 *cap = 0x80;
428 break;
429 case DCB_CAP_ATTR_GSP:
430 *cap = true;
431 break;
432 case DCB_CAP_ATTR_BCN:
433 *cap = false;
434 break;
435 case DCB_CAP_ATTR_DCBX:
436 *cap = adapter->dcbx_cap;
437 break;
438 default:
439 *cap = false;
440 break;
441 }
442
443 return 0;
444 }
445
ixgbe_dcbnl_getnumtcs(struct net_device * netdev,int tcid,u8 * num)446 static int ixgbe_dcbnl_getnumtcs(struct net_device *netdev, int tcid, u8 *num)
447 {
448 struct ixgbe_adapter *adapter = netdev_priv(netdev);
449
450 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
451 switch (tcid) {
452 case DCB_NUMTCS_ATTR_PG:
453 *num = adapter->dcb_cfg.num_tcs.pg_tcs;
454 break;
455 case DCB_NUMTCS_ATTR_PFC:
456 *num = adapter->dcb_cfg.num_tcs.pfc_tcs;
457 break;
458 default:
459 return -EINVAL;
460 }
461 } else {
462 return -EINVAL;
463 }
464
465 return 0;
466 }
467
ixgbe_dcbnl_setnumtcs(struct net_device * netdev,int tcid,u8 num)468 static int ixgbe_dcbnl_setnumtcs(struct net_device *netdev, int tcid, u8 num)
469 {
470 return -EINVAL;
471 }
472
ixgbe_dcbnl_getpfcstate(struct net_device * netdev)473 static u8 ixgbe_dcbnl_getpfcstate(struct net_device *netdev)
474 {
475 struct ixgbe_adapter *adapter = netdev_priv(netdev);
476
477 return adapter->dcb_cfg.pfc_mode_enable;
478 }
479
ixgbe_dcbnl_setpfcstate(struct net_device * netdev,u8 state)480 static void ixgbe_dcbnl_setpfcstate(struct net_device *netdev, u8 state)
481 {
482 struct ixgbe_adapter *adapter = netdev_priv(netdev);
483
484 adapter->temp_dcb_cfg.pfc_mode_enable = state;
485 }
486
487 /**
488 * ixgbe_dcbnl_getapp - retrieve the DCBX application user priority
489 * @netdev : the corresponding netdev
490 * @idtype : identifies the id as ether type or TCP/UDP port number
491 * @id: id is either ether type or TCP/UDP port number
492 *
493 * Returns : on success, returns a non-zero 802.1p user priority bitmap
494 * otherwise returns -EINVAL as the invalid user priority bitmap to indicate an
495 * error.
496 */
ixgbe_dcbnl_getapp(struct net_device * netdev,u8 idtype,u16 id)497 static int ixgbe_dcbnl_getapp(struct net_device *netdev, u8 idtype, u16 id)
498 {
499 struct ixgbe_adapter *adapter = netdev_priv(netdev);
500 struct dcb_app app = {
501 .selector = idtype,
502 .protocol = id,
503 };
504
505 if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE))
506 return -EINVAL;
507
508 return dcb_getapp(netdev, &app);
509 }
510
ixgbe_dcbnl_ieee_getets(struct net_device * dev,struct ieee_ets * ets)511 static int ixgbe_dcbnl_ieee_getets(struct net_device *dev,
512 struct ieee_ets *ets)
513 {
514 struct ixgbe_adapter *adapter = netdev_priv(dev);
515 struct ieee_ets *my_ets = adapter->ixgbe_ieee_ets;
516
517 ets->ets_cap = adapter->dcb_cfg.num_tcs.pg_tcs;
518
519 /* No IEEE PFC settings available */
520 if (!my_ets)
521 return 0;
522
523 ets->cbs = my_ets->cbs;
524 memcpy(ets->tc_tx_bw, my_ets->tc_tx_bw, sizeof(ets->tc_tx_bw));
525 memcpy(ets->tc_rx_bw, my_ets->tc_rx_bw, sizeof(ets->tc_rx_bw));
526 memcpy(ets->tc_tsa, my_ets->tc_tsa, sizeof(ets->tc_tsa));
527 memcpy(ets->prio_tc, my_ets->prio_tc, sizeof(ets->prio_tc));
528 return 0;
529 }
530
ixgbe_dcbnl_ieee_setets(struct net_device * dev,struct ieee_ets * ets)531 static int ixgbe_dcbnl_ieee_setets(struct net_device *dev,
532 struct ieee_ets *ets)
533 {
534 struct ixgbe_adapter *adapter = netdev_priv(dev);
535 int max_frame = dev->mtu + ETH_HLEN + ETH_FCS_LEN;
536 int i, err;
537 __u8 max_tc = 0;
538 __u8 map_chg = 0;
539
540 if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
541 return -EINVAL;
542
543 if (!adapter->ixgbe_ieee_ets) {
544 adapter->ixgbe_ieee_ets = kmalloc(sizeof(struct ieee_ets),
545 GFP_KERNEL);
546 if (!adapter->ixgbe_ieee_ets)
547 return -ENOMEM;
548
549 /* initialize UP2TC mappings to invalid value */
550 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
551 adapter->ixgbe_ieee_ets->prio_tc[i] =
552 IEEE_8021QAZ_MAX_TCS;
553 /* if possible update UP2TC mappings from HW */
554 ixgbe_dcb_read_rtrup2tc(&adapter->hw,
555 adapter->ixgbe_ieee_ets->prio_tc);
556 }
557
558 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
559 if (ets->prio_tc[i] > max_tc)
560 max_tc = ets->prio_tc[i];
561 if (ets->prio_tc[i] != adapter->ixgbe_ieee_ets->prio_tc[i])
562 map_chg = 1;
563 }
564
565 memcpy(adapter->ixgbe_ieee_ets, ets, sizeof(*adapter->ixgbe_ieee_ets));
566
567 if (max_tc)
568 max_tc++;
569
570 if (max_tc > adapter->dcb_cfg.num_tcs.pg_tcs)
571 return -EINVAL;
572
573 if (max_tc != netdev_get_num_tc(dev)) {
574 err = ixgbe_setup_tc(dev, max_tc);
575 if (err)
576 return err;
577 } else if (map_chg) {
578 ixgbe_dcbnl_devreset(dev);
579 }
580
581 return ixgbe_dcb_hw_ets(&adapter->hw, ets, max_frame);
582 }
583
ixgbe_dcbnl_ieee_getpfc(struct net_device * dev,struct ieee_pfc * pfc)584 static int ixgbe_dcbnl_ieee_getpfc(struct net_device *dev,
585 struct ieee_pfc *pfc)
586 {
587 struct ixgbe_adapter *adapter = netdev_priv(dev);
588 struct ieee_pfc *my_pfc = adapter->ixgbe_ieee_pfc;
589 int i;
590
591 pfc->pfc_cap = adapter->dcb_cfg.num_tcs.pfc_tcs;
592
593 /* No IEEE PFC settings available */
594 if (!my_pfc)
595 return 0;
596
597 pfc->pfc_en = my_pfc->pfc_en;
598 pfc->mbc = my_pfc->mbc;
599 pfc->delay = my_pfc->delay;
600
601 for (i = 0; i < MAX_TRAFFIC_CLASS; i++) {
602 pfc->requests[i] = adapter->stats.pxoffrxc[i];
603 pfc->indications[i] = adapter->stats.pxofftxc[i];
604 }
605
606 return 0;
607 }
608
ixgbe_dcbnl_ieee_setpfc(struct net_device * dev,struct ieee_pfc * pfc)609 static int ixgbe_dcbnl_ieee_setpfc(struct net_device *dev,
610 struct ieee_pfc *pfc)
611 {
612 struct ixgbe_adapter *adapter = netdev_priv(dev);
613 struct ixgbe_hw *hw = &adapter->hw;
614 u8 *prio_tc;
615 int err;
616
617 if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
618 return -EINVAL;
619
620 if (!adapter->ixgbe_ieee_pfc) {
621 adapter->ixgbe_ieee_pfc = kmalloc(sizeof(struct ieee_pfc),
622 GFP_KERNEL);
623 if (!adapter->ixgbe_ieee_pfc)
624 return -ENOMEM;
625 }
626
627 prio_tc = adapter->ixgbe_ieee_ets->prio_tc;
628 memcpy(adapter->ixgbe_ieee_pfc, pfc, sizeof(*adapter->ixgbe_ieee_pfc));
629
630 /* Enable link flow control parameters if PFC is disabled */
631 if (pfc->pfc_en)
632 err = ixgbe_dcb_hw_pfc_config(hw, pfc->pfc_en, prio_tc);
633 else
634 err = hw->mac.ops.fc_enable(hw);
635
636 ixgbe_set_rx_drop_en(adapter);
637
638 return err;
639 }
640
ixgbe_dcbnl_ieee_setapp(struct net_device * dev,struct dcb_app * app)641 static int ixgbe_dcbnl_ieee_setapp(struct net_device *dev,
642 struct dcb_app *app)
643 {
644 struct ixgbe_adapter *adapter = netdev_priv(dev);
645 int err;
646
647 if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
648 return -EINVAL;
649
650 err = dcb_ieee_setapp(dev, app);
651 if (err)
652 return err;
653
654 #ifdef IXGBE_FCOE
655 if (app->selector == IEEE_8021QAZ_APP_SEL_ETHERTYPE &&
656 app->protocol == ETH_P_FCOE) {
657 u8 app_mask = dcb_ieee_getapp_mask(dev, app);
658
659 if (app_mask & (1 << adapter->fcoe.up))
660 return 0;
661
662 adapter->fcoe.up = app->priority;
663 ixgbe_dcbnl_devreset(dev);
664 }
665 #endif
666
667 /* VF devices should use default UP when available */
668 if (app->selector == IEEE_8021QAZ_APP_SEL_ETHERTYPE &&
669 app->protocol == 0) {
670 int vf;
671
672 adapter->default_up = app->priority;
673
674 for (vf = 0; vf < adapter->num_vfs; vf++) {
675 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf];
676
677 if (!vfinfo->pf_qos)
678 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan,
679 app->priority, vf);
680 }
681 }
682
683 return 0;
684 }
685
ixgbe_dcbnl_ieee_delapp(struct net_device * dev,struct dcb_app * app)686 static int ixgbe_dcbnl_ieee_delapp(struct net_device *dev,
687 struct dcb_app *app)
688 {
689 struct ixgbe_adapter *adapter = netdev_priv(dev);
690 int err;
691
692 if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
693 return -EINVAL;
694
695 err = dcb_ieee_delapp(dev, app);
696
697 #ifdef IXGBE_FCOE
698 if (!err && app->selector == IEEE_8021QAZ_APP_SEL_ETHERTYPE &&
699 app->protocol == ETH_P_FCOE) {
700 u8 app_mask = dcb_ieee_getapp_mask(dev, app);
701
702 if (app_mask & (1 << adapter->fcoe.up))
703 return 0;
704
705 adapter->fcoe.up = app_mask ?
706 ffs(app_mask) - 1 : IXGBE_FCOE_DEFTC;
707 ixgbe_dcbnl_devreset(dev);
708 }
709 #endif
710 /* IF default priority is being removed clear VF default UP */
711 if (app->selector == IEEE_8021QAZ_APP_SEL_ETHERTYPE &&
712 app->protocol == 0 && adapter->default_up == app->priority) {
713 int vf;
714 long unsigned int app_mask = dcb_ieee_getapp_mask(dev, app);
715 int qos = app_mask ? find_first_bit(&app_mask, 8) : 0;
716
717 adapter->default_up = qos;
718
719 for (vf = 0; vf < adapter->num_vfs; vf++) {
720 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf];
721
722 if (!vfinfo->pf_qos)
723 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan,
724 qos, vf);
725 }
726 }
727
728 return err;
729 }
730
ixgbe_dcbnl_getdcbx(struct net_device * dev)731 static u8 ixgbe_dcbnl_getdcbx(struct net_device *dev)
732 {
733 struct ixgbe_adapter *adapter = netdev_priv(dev);
734 return adapter->dcbx_cap;
735 }
736
ixgbe_dcbnl_setdcbx(struct net_device * dev,u8 mode)737 static u8 ixgbe_dcbnl_setdcbx(struct net_device *dev, u8 mode)
738 {
739 struct ixgbe_adapter *adapter = netdev_priv(dev);
740 struct ieee_ets ets = {0};
741 struct ieee_pfc pfc = {0};
742 int err = 0;
743
744 /* no support for LLD_MANAGED modes or CEE+IEEE */
745 if ((mode & DCB_CAP_DCBX_LLD_MANAGED) ||
746 ((mode & DCB_CAP_DCBX_VER_IEEE) && (mode & DCB_CAP_DCBX_VER_CEE)) ||
747 !(mode & DCB_CAP_DCBX_HOST))
748 return 1;
749
750 if (mode == adapter->dcbx_cap)
751 return 0;
752
753 adapter->dcbx_cap = mode;
754
755 /* ETS and PFC defaults */
756 ets.ets_cap = 8;
757 pfc.pfc_cap = 8;
758
759 if (mode & DCB_CAP_DCBX_VER_IEEE) {
760 ixgbe_dcbnl_ieee_setets(dev, &ets);
761 ixgbe_dcbnl_ieee_setpfc(dev, &pfc);
762 } else if (mode & DCB_CAP_DCBX_VER_CEE) {
763 u8 mask = BIT_PFC | BIT_PG_TX | BIT_PG_RX | BIT_APP_UPCHG;
764
765 adapter->dcb_set_bitmap |= mask;
766 ixgbe_dcbnl_set_all(dev);
767 } else {
768 /* Drop into single TC mode strict priority as this
769 * indicates CEE and IEEE versions are disabled
770 */
771 ixgbe_dcbnl_ieee_setets(dev, &ets);
772 ixgbe_dcbnl_ieee_setpfc(dev, &pfc);
773 err = ixgbe_setup_tc(dev, 0);
774 }
775
776 return err ? 1 : 0;
777 }
778
779 const struct dcbnl_rtnl_ops dcbnl_ops = {
780 .ieee_getets = ixgbe_dcbnl_ieee_getets,
781 .ieee_setets = ixgbe_dcbnl_ieee_setets,
782 .ieee_getpfc = ixgbe_dcbnl_ieee_getpfc,
783 .ieee_setpfc = ixgbe_dcbnl_ieee_setpfc,
784 .ieee_setapp = ixgbe_dcbnl_ieee_setapp,
785 .ieee_delapp = ixgbe_dcbnl_ieee_delapp,
786 .getstate = ixgbe_dcbnl_get_state,
787 .setstate = ixgbe_dcbnl_set_state,
788 .getpermhwaddr = ixgbe_dcbnl_get_perm_hw_addr,
789 .setpgtccfgtx = ixgbe_dcbnl_set_pg_tc_cfg_tx,
790 .setpgbwgcfgtx = ixgbe_dcbnl_set_pg_bwg_cfg_tx,
791 .setpgtccfgrx = ixgbe_dcbnl_set_pg_tc_cfg_rx,
792 .setpgbwgcfgrx = ixgbe_dcbnl_set_pg_bwg_cfg_rx,
793 .getpgtccfgtx = ixgbe_dcbnl_get_pg_tc_cfg_tx,
794 .getpgbwgcfgtx = ixgbe_dcbnl_get_pg_bwg_cfg_tx,
795 .getpgtccfgrx = ixgbe_dcbnl_get_pg_tc_cfg_rx,
796 .getpgbwgcfgrx = ixgbe_dcbnl_get_pg_bwg_cfg_rx,
797 .setpfccfg = ixgbe_dcbnl_set_pfc_cfg,
798 .getpfccfg = ixgbe_dcbnl_get_pfc_cfg,
799 .setall = ixgbe_dcbnl_set_all,
800 .getcap = ixgbe_dcbnl_getcap,
801 .getnumtcs = ixgbe_dcbnl_getnumtcs,
802 .setnumtcs = ixgbe_dcbnl_setnumtcs,
803 .getpfcstate = ixgbe_dcbnl_getpfcstate,
804 .setpfcstate = ixgbe_dcbnl_setpfcstate,
805 .getapp = ixgbe_dcbnl_getapp,
806 .getdcbx = ixgbe_dcbnl_getdcbx,
807 .setdcbx = ixgbe_dcbnl_setdcbx,
808 };
809