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08fb1dac SM |
1 | /* |
2 | * Copyright (c) 2016, Mellanox Technologies. All rights reserved. | |
3 | * | |
4 | * This software is available to you under a choice of one of two | |
5 | * licenses. You may choose to be licensed under the terms of the GNU | |
6 | * General Public License (GPL) Version 2, available from the file | |
7 | * COPYING in the main directory of this source tree, or the | |
8 | * OpenIB.org BSD license below: | |
9 | * | |
10 | * Redistribution and use in source and binary forms, with or | |
11 | * without modification, are permitted provided that the following | |
12 | * conditions are met: | |
13 | * | |
14 | * - Redistributions of source code must retain the above | |
15 | * copyright notice, this list of conditions and the following | |
16 | * disclaimer. | |
17 | * | |
18 | * - Redistributions in binary form must reproduce the above | |
19 | * copyright notice, this list of conditions and the following | |
20 | * disclaimer in the documentation and/or other materials | |
21 | * provided with the distribution. | |
22 | * | |
23 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |
24 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
25 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | |
26 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS | |
27 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN | |
28 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
29 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
30 | * SOFTWARE. | |
31 | */ | |
32 | #include <linux/device.h> | |
33 | #include <linux/netdevice.h> | |
34 | #include "en.h" | |
ecdf2dad HN |
35 | #include "en/port.h" |
36 | #include "en/port_buffer.h" | |
08fb1dac | 37 | |
d8880795 TT |
38 | #define MLX5E_100MB (100000) |
39 | #define MLX5E_1GB (1000000) | |
40 | ||
3a6a931d HN |
41 | #define MLX5E_CEE_STATE_UP 1 |
42 | #define MLX5E_CEE_STATE_DOWN 0 | |
43 | ||
ecdf2dad HN |
44 | /* Max supported cable length is 1000 meters */ |
45 | #define MLX5E_MAX_CABLE_LENGTH 1000 | |
46 | ||
be0f161e HN |
47 | enum { |
48 | MLX5E_VENDOR_TC_GROUP_NUM = 7, | |
49 | MLX5E_LOWEST_PRIO_GROUP = 0, | |
50 | }; | |
51 | ||
2a5e7a13 HN |
52 | #define MLX5_DSCP_SUPPORTED(mdev) (MLX5_CAP_GEN(mdev, qcam_reg) && \ |
53 | MLX5_CAP_QCAM_REG(mdev, qpts) && \ | |
54 | MLX5_CAP_QCAM_REG(mdev, qpdpm)) | |
55 | ||
56 | static int mlx5e_set_trust_state(struct mlx5e_priv *priv, u8 trust_state); | |
57 | static int mlx5e_set_dscp2prio(struct mlx5e_priv *priv, u8 dscp, u8 prio); | |
58 | ||
e207b7e9 HN |
59 | /* If dcbx mode is non-host set the dcbx mode to host. |
60 | */ | |
61 | static int mlx5e_dcbnl_set_dcbx_mode(struct mlx5e_priv *priv, | |
62 | enum mlx5_dcbx_oper_mode mode) | |
63 | { | |
64 | struct mlx5_core_dev *mdev = priv->mdev; | |
65 | u32 param[MLX5_ST_SZ_DW(dcbx_param)]; | |
66 | int err; | |
67 | ||
68 | err = mlx5_query_port_dcbx_param(mdev, param); | |
69 | if (err) | |
70 | return err; | |
71 | ||
72 | MLX5_SET(dcbx_param, param, version_admin, mode); | |
73 | if (mode != MLX5E_DCBX_PARAM_VER_OPER_HOST) | |
74 | MLX5_SET(dcbx_param, param, willing_admin, 1); | |
75 | ||
76 | return mlx5_set_port_dcbx_param(mdev, param); | |
77 | } | |
78 | ||
79 | static int mlx5e_dcbnl_switch_to_host_mode(struct mlx5e_priv *priv) | |
80 | { | |
81 | struct mlx5e_dcbx *dcbx = &priv->dcbx; | |
82 | int err; | |
83 | ||
84 | if (!MLX5_CAP_GEN(priv->mdev, dcbx)) | |
85 | return 0; | |
86 | ||
87 | if (dcbx->mode == MLX5E_DCBX_PARAM_VER_OPER_HOST) | |
88 | return 0; | |
89 | ||
90 | err = mlx5e_dcbnl_set_dcbx_mode(priv, MLX5E_DCBX_PARAM_VER_OPER_HOST); | |
91 | if (err) | |
92 | return err; | |
93 | ||
94 | dcbx->mode = MLX5E_DCBX_PARAM_VER_OPER_HOST; | |
95 | return 0; | |
96 | } | |
97 | ||
08fb1dac SM |
98 | static int mlx5e_dcbnl_ieee_getets(struct net_device *netdev, |
99 | struct ieee_ets *ets) | |
100 | { | |
101 | struct mlx5e_priv *priv = netdev_priv(netdev); | |
820c2c5e | 102 | struct mlx5_core_dev *mdev = priv->mdev; |
be0f161e HN |
103 | u8 tc_group[IEEE_8021QAZ_MAX_TCS]; |
104 | bool is_tc_group_6_exist = false; | |
105 | bool is_zero_bw_ets_tc = false; | |
820c2c5e HN |
106 | int err = 0; |
107 | int i; | |
08fb1dac SM |
108 | |
109 | if (!MLX5_CAP_GEN(priv->mdev, ets)) | |
9eb78923 | 110 | return -EOPNOTSUPP; |
08fb1dac | 111 | |
820c2c5e HN |
112 | ets->ets_cap = mlx5_max_tc(priv->mdev) + 1; |
113 | for (i = 0; i < ets->ets_cap; i++) { | |
114 | err = mlx5_query_port_prio_tc(mdev, i, &ets->prio_tc[i]); | |
115 | if (err) | |
116 | return err; | |
820c2c5e | 117 | |
be0f161e HN |
118 | err = mlx5_query_port_tc_group(mdev, i, &tc_group[i]); |
119 | if (err) | |
120 | return err; | |
121 | ||
820c2c5e HN |
122 | err = mlx5_query_port_tc_bw_alloc(mdev, i, &ets->tc_tx_bw[i]); |
123 | if (err) | |
124 | return err; | |
be0f161e HN |
125 | |
126 | if (ets->tc_tx_bw[i] < MLX5E_MAX_BW_ALLOC && | |
127 | tc_group[i] == (MLX5E_LOWEST_PRIO_GROUP + 1)) | |
128 | is_zero_bw_ets_tc = true; | |
129 | ||
130 | if (tc_group[i] == (MLX5E_VENDOR_TC_GROUP_NUM - 1)) | |
131 | is_tc_group_6_exist = true; | |
132 | } | |
133 | ||
134 | /* Report 0% ets tc if exits*/ | |
135 | if (is_zero_bw_ets_tc) { | |
136 | for (i = 0; i < ets->ets_cap; i++) | |
137 | if (tc_group[i] == MLX5E_LOWEST_PRIO_GROUP) | |
138 | ets->tc_tx_bw[i] = 0; | |
139 | } | |
140 | ||
141 | /* Update tc_tsa based on fw setting*/ | |
142 | for (i = 0; i < ets->ets_cap; i++) { | |
820c2c5e HN |
143 | if (ets->tc_tx_bw[i] < MLX5E_MAX_BW_ALLOC) |
144 | priv->dcbx.tc_tsa[i] = IEEE_8021QAZ_TSA_ETS; | |
be0f161e HN |
145 | else if (tc_group[i] == MLX5E_VENDOR_TC_GROUP_NUM && |
146 | !is_tc_group_6_exist) | |
147 | priv->dcbx.tc_tsa[i] = IEEE_8021QAZ_TSA_VENDOR; | |
820c2c5e | 148 | } |
820c2c5e HN |
149 | memcpy(ets->tc_tsa, priv->dcbx.tc_tsa, sizeof(ets->tc_tsa)); |
150 | ||
151 | return err; | |
08fb1dac SM |
152 | } |
153 | ||
08fb1dac SM |
154 | static void mlx5e_build_tc_group(struct ieee_ets *ets, u8 *tc_group, int max_tc) |
155 | { | |
156 | bool any_tc_mapped_to_ets = false; | |
be0f161e | 157 | bool ets_zero_bw = false; |
08fb1dac SM |
158 | int strict_group; |
159 | int i; | |
160 | ||
be0f161e HN |
161 | for (i = 0; i <= max_tc; i++) { |
162 | if (ets->tc_tsa[i] == IEEE_8021QAZ_TSA_ETS) { | |
08fb1dac | 163 | any_tc_mapped_to_ets = true; |
be0f161e HN |
164 | if (!ets->tc_tx_bw[i]) |
165 | ets_zero_bw = true; | |
166 | } | |
167 | } | |
08fb1dac | 168 | |
be0f161e HN |
169 | /* strict group has higher priority than ets group */ |
170 | strict_group = MLX5E_LOWEST_PRIO_GROUP; | |
171 | if (any_tc_mapped_to_ets) | |
172 | strict_group++; | |
173 | if (ets_zero_bw) | |
174 | strict_group++; | |
08fb1dac SM |
175 | |
176 | for (i = 0; i <= max_tc; i++) { | |
177 | switch (ets->tc_tsa[i]) { | |
178 | case IEEE_8021QAZ_TSA_VENDOR: | |
179 | tc_group[i] = MLX5E_VENDOR_TC_GROUP_NUM; | |
180 | break; | |
181 | case IEEE_8021QAZ_TSA_STRICT: | |
182 | tc_group[i] = strict_group++; | |
183 | break; | |
184 | case IEEE_8021QAZ_TSA_ETS: | |
be0f161e HN |
185 | tc_group[i] = MLX5E_LOWEST_PRIO_GROUP; |
186 | if (ets->tc_tx_bw[i] && ets_zero_bw) | |
187 | tc_group[i] = MLX5E_LOWEST_PRIO_GROUP + 1; | |
08fb1dac SM |
188 | break; |
189 | } | |
190 | } | |
191 | } | |
192 | ||
193 | static void mlx5e_build_tc_tx_bw(struct ieee_ets *ets, u8 *tc_tx_bw, | |
194 | u8 *tc_group, int max_tc) | |
195 | { | |
be0f161e HN |
196 | int bw_for_ets_zero_bw_tc = 0; |
197 | int last_ets_zero_bw_tc = -1; | |
198 | int num_ets_zero_bw = 0; | |
08fb1dac SM |
199 | int i; |
200 | ||
be0f161e HN |
201 | for (i = 0; i <= max_tc; i++) { |
202 | if (ets->tc_tsa[i] == IEEE_8021QAZ_TSA_ETS && | |
203 | !ets->tc_tx_bw[i]) { | |
204 | num_ets_zero_bw++; | |
205 | last_ets_zero_bw_tc = i; | |
206 | } | |
207 | } | |
208 | ||
209 | if (num_ets_zero_bw) | |
210 | bw_for_ets_zero_bw_tc = MLX5E_MAX_BW_ALLOC / num_ets_zero_bw; | |
211 | ||
08fb1dac SM |
212 | for (i = 0; i <= max_tc; i++) { |
213 | switch (ets->tc_tsa[i]) { | |
214 | case IEEE_8021QAZ_TSA_VENDOR: | |
215 | tc_tx_bw[i] = MLX5E_MAX_BW_ALLOC; | |
216 | break; | |
217 | case IEEE_8021QAZ_TSA_STRICT: | |
218 | tc_tx_bw[i] = MLX5E_MAX_BW_ALLOC; | |
219 | break; | |
220 | case IEEE_8021QAZ_TSA_ETS: | |
be0f161e HN |
221 | tc_tx_bw[i] = ets->tc_tx_bw[i] ? |
222 | ets->tc_tx_bw[i] : | |
223 | bw_for_ets_zero_bw_tc; | |
08fb1dac SM |
224 | break; |
225 | } | |
226 | } | |
be0f161e HN |
227 | |
228 | /* Make sure the total bw for ets zero bw group is 100% */ | |
229 | if (last_ets_zero_bw_tc != -1) | |
230 | tc_tx_bw[last_ets_zero_bw_tc] += | |
231 | MLX5E_MAX_BW_ALLOC % num_ets_zero_bw; | |
08fb1dac SM |
232 | } |
233 | ||
be0f161e HN |
234 | /* If there are ETS BW 0, |
235 | * Set ETS group # to 1 for all ETS non zero BW tcs. Their sum must be 100%. | |
236 | * Set group #0 to all the ETS BW 0 tcs and | |
237 | * equally splits the 100% BW between them | |
238 | * Report both group #0 and #1 as ETS type. | |
239 | * All the tcs in group #0 will be reported with 0% BW. | |
240 | */ | |
08fb1dac SM |
241 | int mlx5e_dcbnl_ieee_setets_core(struct mlx5e_priv *priv, struct ieee_ets *ets) |
242 | { | |
243 | struct mlx5_core_dev *mdev = priv->mdev; | |
244 | u8 tc_tx_bw[IEEE_8021QAZ_MAX_TCS]; | |
245 | u8 tc_group[IEEE_8021QAZ_MAX_TCS]; | |
246 | int max_tc = mlx5_max_tc(mdev); | |
5da8bc3e | 247 | int err, i; |
08fb1dac | 248 | |
08fb1dac SM |
249 | mlx5e_build_tc_group(ets, tc_group, max_tc); |
250 | mlx5e_build_tc_tx_bw(ets, tc_tx_bw, tc_group, max_tc); | |
251 | ||
252 | err = mlx5_set_port_prio_tc(mdev, ets->prio_tc); | |
253 | if (err) | |
254 | return err; | |
255 | ||
256 | err = mlx5_set_port_tc_group(mdev, tc_group); | |
257 | if (err) | |
258 | return err; | |
259 | ||
820c2c5e HN |
260 | err = mlx5_set_port_tc_bw_alloc(mdev, tc_tx_bw); |
261 | ||
262 | if (err) | |
263 | return err; | |
264 | ||
265 | memcpy(priv->dcbx.tc_tsa, ets->tc_tsa, sizeof(ets->tc_tsa)); | |
5da8bc3e IK |
266 | |
267 | for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) { | |
268 | mlx5e_dbg(HW, priv, "%s: prio_%d <=> tc_%d\n", | |
269 | __func__, i, ets->prio_tc[i]); | |
270 | mlx5e_dbg(HW, priv, "%s: tc_%d <=> tx_bw_%d%%, group_%d\n", | |
271 | __func__, i, tc_tx_bw[i], tc_group[i]); | |
272 | } | |
273 | ||
820c2c5e | 274 | return err; |
08fb1dac SM |
275 | } |
276 | ||
1722b969 | 277 | static int mlx5e_dbcnl_validate_ets(struct net_device *netdev, |
e279d634 SA |
278 | struct ieee_ets *ets, |
279 | bool zero_sum_allowed) | |
08fb1dac | 280 | { |
ff089191 | 281 | bool have_ets_tc = false; |
08fb1dac SM |
282 | int bw_sum = 0; |
283 | int i; | |
284 | ||
285 | /* Validate Priority */ | |
286 | for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) { | |
1722b969 EBE |
287 | if (ets->prio_tc[i] >= MLX5E_MAX_PRIORITY) { |
288 | netdev_err(netdev, | |
289 | "Failed to validate ETS: priority value greater than max(%d)\n", | |
290 | MLX5E_MAX_PRIORITY); | |
08fb1dac | 291 | return -EINVAL; |
1722b969 | 292 | } |
08fb1dac SM |
293 | } |
294 | ||
295 | /* Validate Bandwidth Sum */ | |
ff089191 HN |
296 | for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) { |
297 | if (ets->tc_tsa[i] == IEEE_8021QAZ_TSA_ETS) { | |
298 | have_ets_tc = true; | |
08fb1dac | 299 | bw_sum += ets->tc_tx_bw[i]; |
ff089191 HN |
300 | } |
301 | } | |
08fb1dac | 302 | |
ff089191 | 303 | if (have_ets_tc && bw_sum != 100) { |
e279d634 SA |
304 | if (bw_sum || (!bw_sum && !zero_sum_allowed)) |
305 | netdev_err(netdev, | |
306 | "Failed to validate ETS: BW sum is illegal\n"); | |
08fb1dac | 307 | return -EINVAL; |
1722b969 | 308 | } |
08fb1dac SM |
309 | return 0; |
310 | } | |
311 | ||
312 | static int mlx5e_dcbnl_ieee_setets(struct net_device *netdev, | |
313 | struct ieee_ets *ets) | |
314 | { | |
315 | struct mlx5e_priv *priv = netdev_priv(netdev); | |
316 | int err; | |
317 | ||
820c2c5e | 318 | if (!MLX5_CAP_GEN(priv->mdev, ets)) |
9eb78923 | 319 | return -EOPNOTSUPP; |
820c2c5e | 320 | |
e279d634 | 321 | err = mlx5e_dbcnl_validate_ets(netdev, ets, false); |
08fb1dac SM |
322 | if (err) |
323 | return err; | |
324 | ||
325 | err = mlx5e_dcbnl_ieee_setets_core(priv, ets); | |
326 | if (err) | |
327 | return err; | |
328 | ||
08fb1dac SM |
329 | return 0; |
330 | } | |
331 | ||
ef918433 AS |
332 | static int mlx5e_dcbnl_ieee_getpfc(struct net_device *dev, |
333 | struct ieee_pfc *pfc) | |
334 | { | |
335 | struct mlx5e_priv *priv = netdev_priv(dev); | |
336 | struct mlx5_core_dev *mdev = priv->mdev; | |
cf678570 GP |
337 | struct mlx5e_pport_stats *pstats = &priv->stats.pport; |
338 | int i; | |
ef918433 AS |
339 | |
340 | pfc->pfc_cap = mlx5_max_tc(mdev) + 1; | |
cf678570 GP |
341 | for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) { |
342 | pfc->requests[i] = PPORT_PER_PRIO_GET(pstats, i, tx_pause); | |
343 | pfc->indications[i] = PPORT_PER_PRIO_GET(pstats, i, rx_pause); | |
344 | } | |
ef918433 | 345 | |
ecdf2dad HN |
346 | if (MLX5_BUFFER_SUPPORTED(mdev)) |
347 | pfc->delay = priv->dcbx.cable_len; | |
348 | ||
ef918433 AS |
349 | return mlx5_query_port_pfc(mdev, &pfc->pfc_en, NULL); |
350 | } | |
351 | ||
352 | static int mlx5e_dcbnl_ieee_setpfc(struct net_device *dev, | |
353 | struct ieee_pfc *pfc) | |
354 | { | |
355 | struct mlx5e_priv *priv = netdev_priv(dev); | |
356 | struct mlx5_core_dev *mdev = priv->mdev; | |
ecdf2dad HN |
357 | u32 old_cable_len = priv->dcbx.cable_len; |
358 | struct ieee_pfc pfc_new; | |
359 | u32 changed = 0; | |
ef918433 | 360 | u8 curr_pfc_en; |
ecdf2dad | 361 | int ret = 0; |
ef918433 | 362 | |
ecdf2dad | 363 | /* pfc_en */ |
ef918433 | 364 | mlx5_query_port_pfc(mdev, &curr_pfc_en, NULL); |
ecdf2dad HN |
365 | if (pfc->pfc_en != curr_pfc_en) { |
366 | ret = mlx5_set_port_pfc(mdev, pfc->pfc_en, pfc->pfc_en); | |
367 | if (ret) | |
368 | return ret; | |
369 | mlx5_toggle_port_link(mdev); | |
370 | changed |= MLX5E_PORT_BUFFER_PFC; | |
371 | } | |
ef918433 | 372 | |
ecdf2dad HN |
373 | if (pfc->delay && |
374 | pfc->delay < MLX5E_MAX_CABLE_LENGTH && | |
375 | pfc->delay != priv->dcbx.cable_len) { | |
376 | priv->dcbx.cable_len = pfc->delay; | |
377 | changed |= MLX5E_PORT_BUFFER_CABLE_LEN; | |
378 | } | |
ef918433 | 379 | |
ecdf2dad HN |
380 | if (MLX5_BUFFER_SUPPORTED(mdev)) { |
381 | pfc_new.pfc_en = (changed & MLX5E_PORT_BUFFER_PFC) ? pfc->pfc_en : curr_pfc_en; | |
382 | if (priv->dcbx.manual_buffer) | |
383 | ret = mlx5e_port_manual_buffer_config(priv, changed, | |
384 | dev->mtu, &pfc_new, | |
385 | NULL, NULL); | |
386 | ||
387 | if (ret && (changed & MLX5E_PORT_BUFFER_CABLE_LEN)) | |
388 | priv->dcbx.cable_len = old_cable_len; | |
389 | } | |
ef918433 | 390 | |
5da8bc3e IK |
391 | if (!ret) { |
392 | mlx5e_dbg(HW, priv, | |
393 | "%s: PFC per priority bit mask: 0x%x\n", | |
394 | __func__, pfc->pfc_en); | |
395 | } | |
ef918433 AS |
396 | return ret; |
397 | } | |
398 | ||
08fb1dac SM |
399 | static u8 mlx5e_dcbnl_getdcbx(struct net_device *dev) |
400 | { | |
0eca995f | 401 | struct mlx5e_priv *priv = netdev_priv(dev); |
0eca995f | 402 | |
9e10bf1d | 403 | return priv->dcbx.cap; |
08fb1dac SM |
404 | } |
405 | ||
406 | static u8 mlx5e_dcbnl_setdcbx(struct net_device *dev, u8 mode) | |
407 | { | |
0eca995f HN |
408 | struct mlx5e_priv *priv = netdev_priv(dev); |
409 | struct mlx5e_dcbx *dcbx = &priv->dcbx; | |
410 | ||
33e21c59 HN |
411 | if (mode & DCB_CAP_DCBX_LLD_MANAGED) |
412 | return 1; | |
413 | ||
0eca995f HN |
414 | if ((!mode) && MLX5_CAP_GEN(priv->mdev, dcbx)) { |
415 | if (dcbx->mode == MLX5E_DCBX_PARAM_VER_OPER_AUTO) | |
416 | return 0; | |
417 | ||
418 | /* set dcbx to fw controlled */ | |
419 | if (!mlx5e_dcbnl_set_dcbx_mode(priv, MLX5E_DCBX_PARAM_VER_OPER_AUTO)) { | |
420 | dcbx->mode = MLX5E_DCBX_PARAM_VER_OPER_AUTO; | |
9e10bf1d | 421 | dcbx->cap &= ~DCB_CAP_DCBX_HOST; |
0eca995f HN |
422 | return 0; |
423 | } | |
424 | ||
425 | return 1; | |
426 | } | |
427 | ||
33e21c59 | 428 | if (!(mode & DCB_CAP_DCBX_HOST)) |
e207b7e9 HN |
429 | return 1; |
430 | ||
33e21c59 | 431 | if (mlx5e_dcbnl_switch_to_host_mode(netdev_priv(dev))) |
08fb1dac SM |
432 | return 1; |
433 | ||
9e10bf1d HN |
434 | dcbx->cap = mode; |
435 | ||
08fb1dac SM |
436 | return 0; |
437 | } | |
438 | ||
2a5e7a13 HN |
439 | static int mlx5e_dcbnl_ieee_setapp(struct net_device *dev, struct dcb_app *app) |
440 | { | |
441 | struct mlx5e_priv *priv = netdev_priv(dev); | |
442 | struct dcb_app temp; | |
443 | bool is_new; | |
444 | int err; | |
445 | ||
f280c6a1 HN |
446 | if (!MLX5_CAP_GEN(priv->mdev, vport_group_manager) || |
447 | !MLX5_DSCP_SUPPORTED(priv->mdev)) | |
448 | return -EOPNOTSUPP; | |
2a5e7a13 | 449 | |
f280c6a1 HN |
450 | if ((app->selector != IEEE_8021QAZ_APP_SEL_DSCP) || |
451 | (app->protocol >= MLX5E_MAX_DSCP)) | |
2a5e7a13 HN |
452 | return -EINVAL; |
453 | ||
454 | /* Save the old entry info */ | |
455 | temp.selector = IEEE_8021QAZ_APP_SEL_DSCP; | |
456 | temp.protocol = app->protocol; | |
457 | temp.priority = priv->dcbx_dp.dscp2prio[app->protocol]; | |
458 | ||
459 | /* Check if need to switch to dscp trust state */ | |
460 | if (!priv->dcbx.dscp_app_cnt) { | |
461 | err = mlx5e_set_trust_state(priv, MLX5_QPTS_TRUST_DSCP); | |
462 | if (err) | |
463 | return err; | |
464 | } | |
465 | ||
466 | /* Skip the fw command if new and old mapping are the same */ | |
467 | if (app->priority != priv->dcbx_dp.dscp2prio[app->protocol]) { | |
468 | err = mlx5e_set_dscp2prio(priv, app->protocol, app->priority); | |
469 | if (err) | |
470 | goto fw_err; | |
471 | } | |
472 | ||
473 | /* Delete the old entry if exists */ | |
474 | is_new = false; | |
475 | err = dcb_ieee_delapp(dev, &temp); | |
476 | if (err) | |
477 | is_new = true; | |
478 | ||
479 | /* Add new entry and update counter */ | |
480 | err = dcb_ieee_setapp(dev, app); | |
481 | if (err) | |
482 | return err; | |
483 | ||
484 | if (is_new) | |
485 | priv->dcbx.dscp_app_cnt++; | |
486 | ||
487 | return err; | |
488 | ||
489 | fw_err: | |
490 | mlx5e_set_trust_state(priv, MLX5_QPTS_TRUST_PCP); | |
491 | return err; | |
492 | } | |
493 | ||
494 | static int mlx5e_dcbnl_ieee_delapp(struct net_device *dev, struct dcb_app *app) | |
495 | { | |
496 | struct mlx5e_priv *priv = netdev_priv(dev); | |
497 | int err; | |
498 | ||
f280c6a1 HN |
499 | if (!MLX5_CAP_GEN(priv->mdev, vport_group_manager) || |
500 | !MLX5_DSCP_SUPPORTED(priv->mdev)) | |
501 | return -EOPNOTSUPP; | |
2a5e7a13 | 502 | |
f280c6a1 HN |
503 | if ((app->selector != IEEE_8021QAZ_APP_SEL_DSCP) || |
504 | (app->protocol >= MLX5E_MAX_DSCP)) | |
2a5e7a13 HN |
505 | return -EINVAL; |
506 | ||
507 | /* Skip if no dscp app entry */ | |
508 | if (!priv->dcbx.dscp_app_cnt) | |
509 | return -ENOENT; | |
510 | ||
511 | /* Check if the entry matches fw setting */ | |
512 | if (app->priority != priv->dcbx_dp.dscp2prio[app->protocol]) | |
513 | return -ENOENT; | |
514 | ||
515 | /* Delete the app entry */ | |
516 | err = dcb_ieee_delapp(dev, app); | |
517 | if (err) | |
518 | return err; | |
519 | ||
520 | /* Reset the priority mapping back to zero */ | |
521 | err = mlx5e_set_dscp2prio(priv, app->protocol, 0); | |
522 | if (err) | |
523 | goto fw_err; | |
524 | ||
525 | priv->dcbx.dscp_app_cnt--; | |
526 | ||
527 | /* Check if need to switch to pcp trust state */ | |
528 | if (!priv->dcbx.dscp_app_cnt) | |
529 | err = mlx5e_set_trust_state(priv, MLX5_QPTS_TRUST_PCP); | |
530 | ||
531 | return err; | |
532 | ||
533 | fw_err: | |
534 | mlx5e_set_trust_state(priv, MLX5_QPTS_TRUST_PCP); | |
535 | return err; | |
536 | } | |
537 | ||
d8880795 TT |
538 | static int mlx5e_dcbnl_ieee_getmaxrate(struct net_device *netdev, |
539 | struct ieee_maxrate *maxrate) | |
540 | { | |
541 | struct mlx5e_priv *priv = netdev_priv(netdev); | |
542 | struct mlx5_core_dev *mdev = priv->mdev; | |
543 | u8 max_bw_value[IEEE_8021QAZ_MAX_TCS]; | |
544 | u8 max_bw_unit[IEEE_8021QAZ_MAX_TCS]; | |
545 | int err; | |
546 | int i; | |
547 | ||
548 | err = mlx5_query_port_ets_rate_limit(mdev, max_bw_value, max_bw_unit); | |
549 | if (err) | |
550 | return err; | |
551 | ||
552 | memset(maxrate->tc_maxrate, 0, sizeof(maxrate->tc_maxrate)); | |
553 | ||
554 | for (i = 0; i <= mlx5_max_tc(mdev); i++) { | |
555 | switch (max_bw_unit[i]) { | |
556 | case MLX5_100_MBPS_UNIT: | |
557 | maxrate->tc_maxrate[i] = max_bw_value[i] * MLX5E_100MB; | |
558 | break; | |
559 | case MLX5_GBPS_UNIT: | |
560 | maxrate->tc_maxrate[i] = max_bw_value[i] * MLX5E_1GB; | |
561 | break; | |
562 | case MLX5_BW_NO_LIMIT: | |
563 | break; | |
564 | default: | |
565 | WARN(true, "non-supported BW unit"); | |
566 | break; | |
567 | } | |
568 | } | |
569 | ||
570 | return 0; | |
571 | } | |
572 | ||
573 | static int mlx5e_dcbnl_ieee_setmaxrate(struct net_device *netdev, | |
574 | struct ieee_maxrate *maxrate) | |
575 | { | |
576 | struct mlx5e_priv *priv = netdev_priv(netdev); | |
577 | struct mlx5_core_dev *mdev = priv->mdev; | |
578 | u8 max_bw_value[IEEE_8021QAZ_MAX_TCS]; | |
579 | u8 max_bw_unit[IEEE_8021QAZ_MAX_TCS]; | |
580 | __u64 upper_limit_mbps = roundup(255 * MLX5E_100MB, MLX5E_1GB); | |
581 | int i; | |
582 | ||
583 | memset(max_bw_value, 0, sizeof(max_bw_value)); | |
584 | memset(max_bw_unit, 0, sizeof(max_bw_unit)); | |
585 | ||
586 | for (i = 0; i <= mlx5_max_tc(mdev); i++) { | |
587 | if (!maxrate->tc_maxrate[i]) { | |
588 | max_bw_unit[i] = MLX5_BW_NO_LIMIT; | |
589 | continue; | |
590 | } | |
591 | if (maxrate->tc_maxrate[i] < upper_limit_mbps) { | |
592 | max_bw_value[i] = div_u64(maxrate->tc_maxrate[i], | |
593 | MLX5E_100MB); | |
594 | max_bw_value[i] = max_bw_value[i] ? max_bw_value[i] : 1; | |
595 | max_bw_unit[i] = MLX5_100_MBPS_UNIT; | |
596 | } else { | |
597 | max_bw_value[i] = div_u64(maxrate->tc_maxrate[i], | |
598 | MLX5E_1GB); | |
599 | max_bw_unit[i] = MLX5_GBPS_UNIT; | |
600 | } | |
601 | } | |
602 | ||
5da8bc3e IK |
603 | for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) { |
604 | mlx5e_dbg(HW, priv, "%s: tc_%d <=> max_bw %d Gbps\n", | |
605 | __func__, i, max_bw_value[i]); | |
606 | } | |
607 | ||
d8880795 TT |
608 | return mlx5_modify_port_ets_rate_limit(mdev, max_bw_value, max_bw_unit); |
609 | } | |
610 | ||
3a6a931d HN |
611 | static u8 mlx5e_dcbnl_setall(struct net_device *netdev) |
612 | { | |
613 | struct mlx5e_priv *priv = netdev_priv(netdev); | |
614 | struct mlx5e_cee_config *cee_cfg = &priv->dcbx.cee_cfg; | |
615 | struct mlx5_core_dev *mdev = priv->mdev; | |
616 | struct ieee_ets ets; | |
617 | struct ieee_pfc pfc; | |
9eb78923 | 618 | int err = -EOPNOTSUPP; |
3a6a931d HN |
619 | int i; |
620 | ||
820c2c5e HN |
621 | if (!MLX5_CAP_GEN(mdev, ets)) |
622 | goto out; | |
623 | ||
3a6a931d HN |
624 | memset(&ets, 0, sizeof(ets)); |
625 | memset(&pfc, 0, sizeof(pfc)); | |
626 | ||
627 | ets.ets_cap = IEEE_8021QAZ_MAX_TCS; | |
628 | for (i = 0; i < CEE_DCBX_MAX_PGS; i++) { | |
629 | ets.tc_tx_bw[i] = cee_cfg->pg_bw_pct[i]; | |
630 | ets.tc_rx_bw[i] = cee_cfg->pg_bw_pct[i]; | |
631 | ets.tc_tsa[i] = IEEE_8021QAZ_TSA_ETS; | |
632 | ets.prio_tc[i] = cee_cfg->prio_to_pg_map[i]; | |
5da8bc3e IK |
633 | mlx5e_dbg(HW, priv, |
634 | "%s: Priority group %d: tx_bw %d, rx_bw %d, prio_tc %d\n", | |
635 | __func__, i, ets.tc_tx_bw[i], ets.tc_rx_bw[i], | |
636 | ets.prio_tc[i]); | |
3a6a931d HN |
637 | } |
638 | ||
e279d634 SA |
639 | err = mlx5e_dbcnl_validate_ets(netdev, &ets, true); |
640 | if (err) | |
3a6a931d | 641 | goto out; |
3a6a931d HN |
642 | |
643 | err = mlx5e_dcbnl_ieee_setets_core(priv, &ets); | |
644 | if (err) { | |
645 | netdev_err(netdev, | |
646 | "%s, Failed to set ETS: %d\n", __func__, err); | |
647 | goto out; | |
648 | } | |
649 | ||
650 | /* Set PFC */ | |
651 | pfc.pfc_cap = mlx5_max_tc(mdev) + 1; | |
652 | if (!cee_cfg->pfc_enable) | |
653 | pfc.pfc_en = 0; | |
654 | else | |
655 | for (i = 0; i < CEE_DCBX_MAX_PRIO; i++) | |
656 | pfc.pfc_en |= cee_cfg->pfc_setting[i] << i; | |
657 | ||
658 | err = mlx5e_dcbnl_ieee_setpfc(netdev, &pfc); | |
659 | if (err) { | |
660 | netdev_err(netdev, | |
661 | "%s, Failed to set PFC: %d\n", __func__, err); | |
662 | goto out; | |
663 | } | |
664 | out: | |
665 | return err ? MLX5_DCB_NO_CHG : MLX5_DCB_CHG_RESET; | |
666 | } | |
667 | ||
668 | static u8 mlx5e_dcbnl_getstate(struct net_device *netdev) | |
669 | { | |
670 | return MLX5E_CEE_STATE_UP; | |
671 | } | |
672 | ||
673 | static void mlx5e_dcbnl_getpermhwaddr(struct net_device *netdev, | |
674 | u8 *perm_addr) | |
675 | { | |
676 | struct mlx5e_priv *priv = netdev_priv(netdev); | |
677 | ||
678 | if (!perm_addr) | |
679 | return; | |
680 | ||
d968f0f2 HN |
681 | memset(perm_addr, 0xff, MAX_ADDR_LEN); |
682 | ||
e1d974d0 | 683 | mlx5_query_mac_address(priv->mdev, perm_addr); |
3a6a931d HN |
684 | } |
685 | ||
686 | static void mlx5e_dcbnl_setpgtccfgtx(struct net_device *netdev, | |
687 | int priority, u8 prio_type, | |
688 | u8 pgid, u8 bw_pct, u8 up_map) | |
689 | { | |
690 | struct mlx5e_priv *priv = netdev_priv(netdev); | |
691 | struct mlx5e_cee_config *cee_cfg = &priv->dcbx.cee_cfg; | |
692 | ||
693 | if (priority >= CEE_DCBX_MAX_PRIO) { | |
694 | netdev_err(netdev, | |
695 | "%s, priority is out of range\n", __func__); | |
696 | return; | |
697 | } | |
698 | ||
699 | if (pgid >= CEE_DCBX_MAX_PGS) { | |
700 | netdev_err(netdev, | |
701 | "%s, priority group is out of range\n", __func__); | |
702 | return; | |
703 | } | |
704 | ||
705 | cee_cfg->prio_to_pg_map[priority] = pgid; | |
706 | } | |
707 | ||
708 | static void mlx5e_dcbnl_setpgbwgcfgtx(struct net_device *netdev, | |
709 | int pgid, u8 bw_pct) | |
710 | { | |
711 | struct mlx5e_priv *priv = netdev_priv(netdev); | |
712 | struct mlx5e_cee_config *cee_cfg = &priv->dcbx.cee_cfg; | |
713 | ||
714 | if (pgid >= CEE_DCBX_MAX_PGS) { | |
715 | netdev_err(netdev, | |
716 | "%s, priority group is out of range\n", __func__); | |
717 | return; | |
718 | } | |
719 | ||
720 | cee_cfg->pg_bw_pct[pgid] = bw_pct; | |
721 | } | |
722 | ||
723 | static void mlx5e_dcbnl_getpgtccfgtx(struct net_device *netdev, | |
724 | int priority, u8 *prio_type, | |
725 | u8 *pgid, u8 *bw_pct, u8 *up_map) | |
726 | { | |
727 | struct mlx5e_priv *priv = netdev_priv(netdev); | |
728 | struct mlx5_core_dev *mdev = priv->mdev; | |
729 | ||
d15118af MS |
730 | if (!MLX5_CAP_GEN(priv->mdev, ets)) { |
731 | netdev_err(netdev, "%s, ets is not supported\n", __func__); | |
732 | return; | |
733 | } | |
734 | ||
3a6a931d HN |
735 | if (priority >= CEE_DCBX_MAX_PRIO) { |
736 | netdev_err(netdev, | |
737 | "%s, priority is out of range\n", __func__); | |
738 | return; | |
739 | } | |
740 | ||
741 | *prio_type = 0; | |
742 | *bw_pct = 0; | |
743 | *up_map = 0; | |
744 | ||
745 | if (mlx5_query_port_prio_tc(mdev, priority, pgid)) | |
746 | *pgid = 0; | |
747 | } | |
748 | ||
749 | static void mlx5e_dcbnl_getpgbwgcfgtx(struct net_device *netdev, | |
750 | int pgid, u8 *bw_pct) | |
751 | { | |
be0f161e | 752 | struct ieee_ets ets; |
3a6a931d HN |
753 | |
754 | if (pgid >= CEE_DCBX_MAX_PGS) { | |
755 | netdev_err(netdev, | |
756 | "%s, priority group is out of range\n", __func__); | |
757 | return; | |
758 | } | |
759 | ||
be0f161e HN |
760 | mlx5e_dcbnl_ieee_getets(netdev, &ets); |
761 | *bw_pct = ets.tc_tx_bw[pgid]; | |
3a6a931d HN |
762 | } |
763 | ||
764 | static void mlx5e_dcbnl_setpfccfg(struct net_device *netdev, | |
765 | int priority, u8 setting) | |
766 | { | |
767 | struct mlx5e_priv *priv = netdev_priv(netdev); | |
768 | struct mlx5e_cee_config *cee_cfg = &priv->dcbx.cee_cfg; | |
769 | ||
770 | if (priority >= CEE_DCBX_MAX_PRIO) { | |
771 | netdev_err(netdev, | |
772 | "%s, priority is out of range\n", __func__); | |
773 | return; | |
774 | } | |
775 | ||
776 | if (setting > 1) | |
777 | return; | |
778 | ||
779 | cee_cfg->pfc_setting[priority] = setting; | |
780 | } | |
781 | ||
782 | static int | |
783 | mlx5e_dcbnl_get_priority_pfc(struct net_device *netdev, | |
784 | int priority, u8 *setting) | |
785 | { | |
786 | struct ieee_pfc pfc; | |
787 | int err; | |
788 | ||
789 | err = mlx5e_dcbnl_ieee_getpfc(netdev, &pfc); | |
790 | ||
791 | if (err) | |
792 | *setting = 0; | |
793 | else | |
794 | *setting = (pfc.pfc_en >> priority) & 0x01; | |
795 | ||
796 | return err; | |
797 | } | |
798 | ||
799 | static void mlx5e_dcbnl_getpfccfg(struct net_device *netdev, | |
800 | int priority, u8 *setting) | |
801 | { | |
802 | if (priority >= CEE_DCBX_MAX_PRIO) { | |
803 | netdev_err(netdev, | |
804 | "%s, priority is out of range\n", __func__); | |
805 | return; | |
806 | } | |
807 | ||
808 | if (!setting) | |
809 | return; | |
810 | ||
811 | mlx5e_dcbnl_get_priority_pfc(netdev, priority, setting); | |
812 | } | |
813 | ||
814 | static u8 mlx5e_dcbnl_getcap(struct net_device *netdev, | |
815 | int capid, u8 *cap) | |
816 | { | |
817 | struct mlx5e_priv *priv = netdev_priv(netdev); | |
818 | struct mlx5_core_dev *mdev = priv->mdev; | |
819 | u8 rval = 0; | |
820 | ||
821 | switch (capid) { | |
822 | case DCB_CAP_ATTR_PG: | |
823 | *cap = true; | |
824 | break; | |
825 | case DCB_CAP_ATTR_PFC: | |
826 | *cap = true; | |
827 | break; | |
828 | case DCB_CAP_ATTR_UP2TC: | |
829 | *cap = false; | |
830 | break; | |
831 | case DCB_CAP_ATTR_PG_TCS: | |
832 | *cap = 1 << mlx5_max_tc(mdev); | |
833 | break; | |
834 | case DCB_CAP_ATTR_PFC_TCS: | |
835 | *cap = 1 << mlx5_max_tc(mdev); | |
836 | break; | |
837 | case DCB_CAP_ATTR_GSP: | |
838 | *cap = false; | |
839 | break; | |
840 | case DCB_CAP_ATTR_BCN: | |
841 | *cap = false; | |
842 | break; | |
843 | case DCB_CAP_ATTR_DCBX: | |
9e10bf1d HN |
844 | *cap = priv->dcbx.cap | |
845 | DCB_CAP_DCBX_VER_CEE | | |
846 | DCB_CAP_DCBX_VER_IEEE; | |
3a6a931d HN |
847 | break; |
848 | default: | |
849 | *cap = 0; | |
850 | rval = 1; | |
851 | break; | |
852 | } | |
853 | ||
854 | return rval; | |
855 | } | |
856 | ||
857 | static int mlx5e_dcbnl_getnumtcs(struct net_device *netdev, | |
858 | int tcs_id, u8 *num) | |
859 | { | |
860 | struct mlx5e_priv *priv = netdev_priv(netdev); | |
861 | struct mlx5_core_dev *mdev = priv->mdev; | |
862 | ||
863 | switch (tcs_id) { | |
864 | case DCB_NUMTCS_ATTR_PG: | |
865 | case DCB_NUMTCS_ATTR_PFC: | |
866 | *num = mlx5_max_tc(mdev) + 1; | |
867 | break; | |
868 | default: | |
869 | return -EINVAL; | |
870 | } | |
871 | ||
872 | return 0; | |
873 | } | |
874 | ||
875 | static u8 mlx5e_dcbnl_getpfcstate(struct net_device *netdev) | |
876 | { | |
877 | struct ieee_pfc pfc; | |
878 | ||
879 | if (mlx5e_dcbnl_ieee_getpfc(netdev, &pfc)) | |
880 | return MLX5E_CEE_STATE_DOWN; | |
881 | ||
882 | return pfc.pfc_en ? MLX5E_CEE_STATE_UP : MLX5E_CEE_STATE_DOWN; | |
883 | } | |
884 | ||
885 | static void mlx5e_dcbnl_setpfcstate(struct net_device *netdev, u8 state) | |
886 | { | |
887 | struct mlx5e_priv *priv = netdev_priv(netdev); | |
888 | struct mlx5e_cee_config *cee_cfg = &priv->dcbx.cee_cfg; | |
889 | ||
890 | if ((state != MLX5E_CEE_STATE_UP) && (state != MLX5E_CEE_STATE_DOWN)) | |
891 | return; | |
892 | ||
893 | cee_cfg->pfc_enable = state; | |
894 | } | |
895 | ||
ecdf2dad HN |
896 | static int mlx5e_dcbnl_getbuffer(struct net_device *dev, |
897 | struct dcbnl_buffer *dcb_buffer) | |
898 | { | |
899 | struct mlx5e_priv *priv = netdev_priv(dev); | |
900 | struct mlx5_core_dev *mdev = priv->mdev; | |
901 | struct mlx5e_port_buffer port_buffer; | |
902 | u8 buffer[MLX5E_MAX_PRIORITY]; | |
903 | int i, err; | |
904 | ||
905 | if (!MLX5_BUFFER_SUPPORTED(mdev)) | |
906 | return -EOPNOTSUPP; | |
907 | ||
908 | err = mlx5e_port_query_priority2buffer(mdev, buffer); | |
909 | if (err) | |
910 | return err; | |
911 | ||
912 | for (i = 0; i < MLX5E_MAX_PRIORITY; i++) | |
913 | dcb_buffer->prio2buffer[i] = buffer[i]; | |
914 | ||
915 | err = mlx5e_port_query_buffer(priv, &port_buffer); | |
916 | if (err) | |
917 | return err; | |
918 | ||
919 | for (i = 0; i < MLX5E_MAX_BUFFER; i++) | |
920 | dcb_buffer->buffer_size[i] = port_buffer.buffer[i].size; | |
921 | dcb_buffer->total_size = port_buffer.port_buffer_size; | |
922 | ||
923 | return 0; | |
924 | } | |
925 | ||
926 | static int mlx5e_dcbnl_setbuffer(struct net_device *dev, | |
927 | struct dcbnl_buffer *dcb_buffer) | |
928 | { | |
929 | struct mlx5e_priv *priv = netdev_priv(dev); | |
930 | struct mlx5_core_dev *mdev = priv->mdev; | |
931 | struct mlx5e_port_buffer port_buffer; | |
932 | u8 old_prio2buffer[MLX5E_MAX_PRIORITY]; | |
933 | u32 *buffer_size = NULL; | |
934 | u8 *prio2buffer = NULL; | |
935 | u32 changed = 0; | |
936 | int i, err; | |
937 | ||
938 | if (!MLX5_BUFFER_SUPPORTED(mdev)) | |
939 | return -EOPNOTSUPP; | |
940 | ||
941 | for (i = 0; i < DCBX_MAX_BUFFERS; i++) | |
942 | mlx5_core_dbg(mdev, "buffer[%d]=%d\n", i, dcb_buffer->buffer_size[i]); | |
943 | ||
944 | for (i = 0; i < MLX5E_MAX_PRIORITY; i++) | |
945 | mlx5_core_dbg(mdev, "priority %d buffer%d\n", i, dcb_buffer->prio2buffer[i]); | |
946 | ||
947 | err = mlx5e_port_query_priority2buffer(mdev, old_prio2buffer); | |
948 | if (err) | |
949 | return err; | |
950 | ||
951 | for (i = 0; i < MLX5E_MAX_PRIORITY; i++) { | |
952 | if (dcb_buffer->prio2buffer[i] != old_prio2buffer[i]) { | |
953 | changed |= MLX5E_PORT_BUFFER_PRIO2BUFFER; | |
954 | prio2buffer = dcb_buffer->prio2buffer; | |
955 | break; | |
956 | } | |
957 | } | |
958 | ||
959 | err = mlx5e_port_query_buffer(priv, &port_buffer); | |
960 | if (err) | |
961 | return err; | |
962 | ||
963 | for (i = 0; i < MLX5E_MAX_BUFFER; i++) { | |
964 | if (port_buffer.buffer[i].size != dcb_buffer->buffer_size[i]) { | |
965 | changed |= MLX5E_PORT_BUFFER_SIZE; | |
966 | buffer_size = dcb_buffer->buffer_size; | |
967 | break; | |
968 | } | |
969 | } | |
970 | ||
971 | if (!changed) | |
972 | return 0; | |
973 | ||
974 | priv->dcbx.manual_buffer = true; | |
975 | err = mlx5e_port_manual_buffer_config(priv, changed, dev->mtu, NULL, | |
976 | buffer_size, prio2buffer); | |
977 | return err; | |
978 | } | |
979 | ||
08fb1dac SM |
980 | const struct dcbnl_rtnl_ops mlx5e_dcbnl_ops = { |
981 | .ieee_getets = mlx5e_dcbnl_ieee_getets, | |
982 | .ieee_setets = mlx5e_dcbnl_ieee_setets, | |
d8880795 TT |
983 | .ieee_getmaxrate = mlx5e_dcbnl_ieee_getmaxrate, |
984 | .ieee_setmaxrate = mlx5e_dcbnl_ieee_setmaxrate, | |
ef918433 AS |
985 | .ieee_getpfc = mlx5e_dcbnl_ieee_getpfc, |
986 | .ieee_setpfc = mlx5e_dcbnl_ieee_setpfc, | |
2a5e7a13 HN |
987 | .ieee_setapp = mlx5e_dcbnl_ieee_setapp, |
988 | .ieee_delapp = mlx5e_dcbnl_ieee_delapp, | |
08fb1dac SM |
989 | .getdcbx = mlx5e_dcbnl_getdcbx, |
990 | .setdcbx = mlx5e_dcbnl_setdcbx, | |
ecdf2dad HN |
991 | .dcbnl_getbuffer = mlx5e_dcbnl_getbuffer, |
992 | .dcbnl_setbuffer = mlx5e_dcbnl_setbuffer, | |
3a6a931d HN |
993 | |
994 | /* CEE interfaces */ | |
995 | .setall = mlx5e_dcbnl_setall, | |
996 | .getstate = mlx5e_dcbnl_getstate, | |
997 | .getpermhwaddr = mlx5e_dcbnl_getpermhwaddr, | |
998 | ||
999 | .setpgtccfgtx = mlx5e_dcbnl_setpgtccfgtx, | |
1000 | .setpgbwgcfgtx = mlx5e_dcbnl_setpgbwgcfgtx, | |
1001 | .getpgtccfgtx = mlx5e_dcbnl_getpgtccfgtx, | |
1002 | .getpgbwgcfgtx = mlx5e_dcbnl_getpgbwgcfgtx, | |
1003 | ||
1004 | .setpfccfg = mlx5e_dcbnl_setpfccfg, | |
1005 | .getpfccfg = mlx5e_dcbnl_getpfccfg, | |
1006 | .getcap = mlx5e_dcbnl_getcap, | |
1007 | .getnumtcs = mlx5e_dcbnl_getnumtcs, | |
1008 | .getpfcstate = mlx5e_dcbnl_getpfcstate, | |
1009 | .setpfcstate = mlx5e_dcbnl_setpfcstate, | |
08fb1dac | 1010 | }; |
e207b7e9 HN |
1011 | |
1012 | static void mlx5e_dcbnl_query_dcbx_mode(struct mlx5e_priv *priv, | |
1013 | enum mlx5_dcbx_oper_mode *mode) | |
1014 | { | |
1015 | u32 out[MLX5_ST_SZ_DW(dcbx_param)]; | |
1016 | ||
1017 | *mode = MLX5E_DCBX_PARAM_VER_OPER_HOST; | |
1018 | ||
1019 | if (!mlx5_query_port_dcbx_param(priv->mdev, out)) | |
1020 | *mode = MLX5_GET(dcbx_param, out, version_oper); | |
1021 | ||
1022 | /* From driver's point of view, we only care if the mode | |
1023 | * is host (HOST) or non-host (AUTO) | |
1024 | */ | |
1025 | if (*mode != MLX5E_DCBX_PARAM_VER_OPER_HOST) | |
1026 | *mode = MLX5E_DCBX_PARAM_VER_OPER_AUTO; | |
1027 | } | |
1028 | ||
1029 | static void mlx5e_ets_init(struct mlx5e_priv *priv) | |
1030 | { | |
e207b7e9 | 1031 | struct ieee_ets ets; |
97c8c3aa TT |
1032 | int err; |
1033 | int i; | |
e207b7e9 | 1034 | |
4525a45b HN |
1035 | if (!MLX5_CAP_GEN(priv->mdev, ets)) |
1036 | return; | |
1037 | ||
e207b7e9 HN |
1038 | memset(&ets, 0, sizeof(ets)); |
1039 | ets.ets_cap = mlx5_max_tc(priv->mdev) + 1; | |
1040 | for (i = 0; i < ets.ets_cap; i++) { | |
1041 | ets.tc_tx_bw[i] = MLX5E_MAX_BW_ALLOC; | |
1042 | ets.tc_tsa[i] = IEEE_8021QAZ_TSA_VENDOR; | |
1043 | ets.prio_tc[i] = i; | |
1044 | } | |
1045 | ||
4b7d4363 TT |
1046 | if (ets.ets_cap > 1) { |
1047 | /* tclass[prio=0]=1, tclass[prio=1]=0, tclass[prio=i]=i (for i>1) */ | |
1048 | ets.prio_tc[0] = 1; | |
1049 | ets.prio_tc[1] = 0; | |
1050 | } | |
e207b7e9 | 1051 | |
97c8c3aa TT |
1052 | err = mlx5e_dcbnl_ieee_setets_core(priv, &ets); |
1053 | if (err) | |
1054 | netdev_err(priv->netdev, | |
1055 | "%s, Failed to init ETS: %d\n", __func__, err); | |
e207b7e9 HN |
1056 | } |
1057 | ||
2a5e7a13 HN |
1058 | enum { |
1059 | INIT, | |
1060 | DELETE, | |
1061 | }; | |
1062 | ||
1063 | static void mlx5e_dcbnl_dscp_app(struct mlx5e_priv *priv, int action) | |
1064 | { | |
1065 | struct dcb_app temp; | |
1066 | int i; | |
1067 | ||
1068 | if (!MLX5_CAP_GEN(priv->mdev, vport_group_manager)) | |
1069 | return; | |
1070 | ||
1071 | if (!MLX5_DSCP_SUPPORTED(priv->mdev)) | |
1072 | return; | |
1073 | ||
1074 | /* No SEL_DSCP entry in non DSCP state */ | |
1075 | if (priv->dcbx_dp.trust_state != MLX5_QPTS_TRUST_DSCP) | |
1076 | return; | |
1077 | ||
1078 | temp.selector = IEEE_8021QAZ_APP_SEL_DSCP; | |
1079 | for (i = 0; i < MLX5E_MAX_DSCP; i++) { | |
1080 | temp.protocol = i; | |
1081 | temp.priority = priv->dcbx_dp.dscp2prio[i]; | |
1082 | if (action == INIT) | |
1083 | dcb_ieee_setapp(priv->netdev, &temp); | |
1084 | else | |
1085 | dcb_ieee_delapp(priv->netdev, &temp); | |
1086 | } | |
1087 | ||
1088 | priv->dcbx.dscp_app_cnt = (action == INIT) ? MLX5E_MAX_DSCP : 0; | |
1089 | } | |
1090 | ||
1091 | void mlx5e_dcbnl_init_app(struct mlx5e_priv *priv) | |
1092 | { | |
1093 | mlx5e_dcbnl_dscp_app(priv, INIT); | |
1094 | } | |
1095 | ||
1096 | void mlx5e_dcbnl_delete_app(struct mlx5e_priv *priv) | |
1097 | { | |
1098 | mlx5e_dcbnl_dscp_app(priv, DELETE); | |
1099 | } | |
1100 | ||
fbcb127e HN |
1101 | static void mlx5e_trust_update_tx_min_inline_mode(struct mlx5e_priv *priv, |
1102 | struct mlx5e_params *params) | |
1103 | { | |
b431302e | 1104 | mlx5_query_min_inline(priv->mdev, ¶ms->tx_min_inline_mode); |
fbcb127e HN |
1105 | if (priv->dcbx_dp.trust_state == MLX5_QPTS_TRUST_DSCP && |
1106 | params->tx_min_inline_mode == MLX5_INLINE_MODE_L2) | |
1107 | params->tx_min_inline_mode = MLX5_INLINE_MODE_IP; | |
1108 | } | |
1109 | ||
1110 | static void mlx5e_trust_update_sq_inline_mode(struct mlx5e_priv *priv) | |
1111 | { | |
1112 | struct mlx5e_channels new_channels = {}; | |
1113 | ||
1114 | mutex_lock(&priv->state_lock); | |
1115 | ||
fbcb127e HN |
1116 | new_channels.params = priv->channels.params; |
1117 | mlx5e_trust_update_tx_min_inline_mode(priv, &new_channels.params); | |
1118 | ||
35f80acb HN |
1119 | if (!test_bit(MLX5E_STATE_OPENED, &priv->state)) { |
1120 | priv->channels.params = new_channels.params; | |
1121 | goto out; | |
1122 | } | |
1123 | ||
fbcb127e HN |
1124 | /* Skip if tx_min_inline is the same */ |
1125 | if (new_channels.params.tx_min_inline_mode == | |
1126 | priv->channels.params.tx_min_inline_mode) | |
1127 | goto out; | |
1128 | ||
b9ab5d0e | 1129 | mlx5e_safe_switch_channels(priv, &new_channels, NULL, NULL); |
fbcb127e HN |
1130 | |
1131 | out: | |
1132 | mutex_unlock(&priv->state_lock); | |
1133 | } | |
1134 | ||
2a5e7a13 HN |
1135 | static int mlx5e_set_trust_state(struct mlx5e_priv *priv, u8 trust_state) |
1136 | { | |
1137 | int err; | |
1138 | ||
f280c6a1 | 1139 | err = mlx5_set_trust_state(priv->mdev, trust_state); |
2a5e7a13 HN |
1140 | if (err) |
1141 | return err; | |
1142 | priv->dcbx_dp.trust_state = trust_state; | |
fbcb127e | 1143 | mlx5e_trust_update_sq_inline_mode(priv); |
2a5e7a13 HN |
1144 | |
1145 | return err; | |
1146 | } | |
1147 | ||
1148 | static int mlx5e_set_dscp2prio(struct mlx5e_priv *priv, u8 dscp, u8 prio) | |
1149 | { | |
1150 | int err; | |
1151 | ||
1152 | err = mlx5_set_dscp2prio(priv->mdev, dscp, prio); | |
1153 | if (err) | |
1154 | return err; | |
1155 | ||
1156 | priv->dcbx_dp.dscp2prio[dscp] = prio; | |
1157 | return err; | |
1158 | } | |
1159 | ||
1160 | static int mlx5e_trust_initialize(struct mlx5e_priv *priv) | |
1161 | { | |
1162 | struct mlx5_core_dev *mdev = priv->mdev; | |
1163 | int err; | |
1164 | ||
2e8e70d2 OG |
1165 | priv->dcbx_dp.trust_state = MLX5_QPTS_TRUST_PCP; |
1166 | ||
2a5e7a13 HN |
1167 | if (!MLX5_DSCP_SUPPORTED(mdev)) |
1168 | return 0; | |
1169 | ||
1170 | err = mlx5_query_trust_state(priv->mdev, &priv->dcbx_dp.trust_state); | |
1171 | if (err) | |
1172 | return err; | |
1173 | ||
fbcb127e HN |
1174 | mlx5e_trust_update_tx_min_inline_mode(priv, &priv->channels.params); |
1175 | ||
2a5e7a13 HN |
1176 | err = mlx5_query_dscp2prio(priv->mdev, priv->dcbx_dp.dscp2prio); |
1177 | if (err) | |
1178 | return err; | |
1179 | ||
1180 | return 0; | |
1181 | } | |
1182 | ||
e207b7e9 HN |
1183 | void mlx5e_dcbnl_initialize(struct mlx5e_priv *priv) |
1184 | { | |
1185 | struct mlx5e_dcbx *dcbx = &priv->dcbx; | |
1186 | ||
2a5e7a13 HN |
1187 | mlx5e_trust_initialize(priv); |
1188 | ||
33c52b67 HN |
1189 | if (!MLX5_CAP_GEN(priv->mdev, qos)) |
1190 | return; | |
1191 | ||
e207b7e9 HN |
1192 | if (MLX5_CAP_GEN(priv->mdev, dcbx)) |
1193 | mlx5e_dcbnl_query_dcbx_mode(priv, &dcbx->mode); | |
1194 | ||
9e10bf1d HN |
1195 | priv->dcbx.cap = DCB_CAP_DCBX_VER_CEE | |
1196 | DCB_CAP_DCBX_VER_IEEE; | |
1197 | if (priv->dcbx.mode == MLX5E_DCBX_PARAM_VER_OPER_HOST) | |
1198 | priv->dcbx.cap |= DCB_CAP_DCBX_HOST; | |
1199 | ||
ecdf2dad HN |
1200 | priv->dcbx.manual_buffer = false; |
1201 | priv->dcbx.cable_len = MLX5E_DEFAULT_CABLE_LEN; | |
1202 | ||
e207b7e9 HN |
1203 | mlx5e_ets_init(priv); |
1204 | } |