blob: 3a6d97d5280c13bad0d8b9da842b7dd64133a583 [file] [log] [blame]
Alexander Duyck2f90b862008-11-20 20:52:10 -08001/*
Mark Rustad698e1d22011-03-14 09:01:02 +00002 * Copyright (c) 2008-2011, Intel Corporation.
Alexander Duyck2f90b862008-11-20 20:52:10 -08003 *
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms and conditions of the GNU General Public License,
6 * version 2, as published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
11 * more details.
12 *
13 * You should have received a copy of the GNU General Public License along with
14 * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
15 * Place - Suite 330, Boston, MA 02111-1307 USA.
16 *
17 * Author: Lucy Liu <lucy.liu@intel.com>
18 */
19
20#include <linux/netdevice.h>
21#include <linux/netlink.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090022#include <linux/slab.h>
Alexander Duyck2f90b862008-11-20 20:52:10 -080023#include <net/netlink.h>
24#include <net/rtnetlink.h>
25#include <linux/dcbnl.h>
John Fastabend96b99682010-12-30 09:26:37 +000026#include <net/dcbevent.h>
Alexander Duyck2f90b862008-11-20 20:52:10 -080027#include <linux/rtnetlink.h>
28#include <net/sock.h>
29
30/**
31 * Data Center Bridging (DCB) is a collection of Ethernet enhancements
32 * intended to allow network traffic with differing requirements
33 * (highly reliable, no drops vs. best effort vs. low latency) to operate
34 * and co-exist on Ethernet. Current DCB features are:
35 *
36 * Enhanced Transmission Selection (aka Priority Grouping [PG]) - provides a
37 * framework for assigning bandwidth guarantees to traffic classes.
38 *
39 * Priority-based Flow Control (PFC) - provides a flow control mechanism which
40 * can work independently for each 802.1p priority.
41 *
42 * Congestion Notification - provides a mechanism for end-to-end congestion
43 * control for protocols which do not have built-in congestion management.
44 *
45 * More information about the emerging standards for these Ethernet features
46 * can be found at: http://www.ieee802.org/1/pages/dcbridges.html
47 *
48 * This file implements an rtnetlink interface to allow configuration of DCB
49 * features for capable devices.
50 */
51
52MODULE_AUTHOR("Lucy Liu, <lucy.liu@intel.com>");
Jeff Kirsher7a6b6f52008-11-25 01:02:08 -080053MODULE_DESCRIPTION("Data Center Bridging netlink interface");
Alexander Duyck2f90b862008-11-20 20:52:10 -080054MODULE_LICENSE("GPL");
55
56/**************** DCB attribute policies *************************************/
57
58/* DCB netlink attributes policy */
Alexey Dobriyanb54452b2010-02-18 08:14:31 +000059static const struct nla_policy dcbnl_rtnl_policy[DCB_ATTR_MAX + 1] = {
Alexander Duyck859ee3c2008-11-20 21:10:23 -080060 [DCB_ATTR_IFNAME] = {.type = NLA_NUL_STRING, .len = IFNAMSIZ - 1},
61 [DCB_ATTR_STATE] = {.type = NLA_U8},
62 [DCB_ATTR_PFC_CFG] = {.type = NLA_NESTED},
63 [DCB_ATTR_PG_CFG] = {.type = NLA_NESTED},
64 [DCB_ATTR_SET_ALL] = {.type = NLA_U8},
Alexander Duyck2f90b862008-11-20 20:52:10 -080065 [DCB_ATTR_PERM_HWADDR] = {.type = NLA_FLAG},
Alexander Duyck859ee3c2008-11-20 21:10:23 -080066 [DCB_ATTR_CAP] = {.type = NLA_NESTED},
67 [DCB_ATTR_PFC_STATE] = {.type = NLA_U8},
68 [DCB_ATTR_BCN] = {.type = NLA_NESTED},
Yi Zou6fa382a2009-08-31 12:33:20 +000069 [DCB_ATTR_APP] = {.type = NLA_NESTED},
John Fastabend3e290272010-12-30 09:25:46 +000070 [DCB_ATTR_IEEE] = {.type = NLA_NESTED},
Shmulik Ravid6241b622010-12-30 06:26:48 +000071 [DCB_ATTR_DCBX] = {.type = NLA_U8},
Shmulik Ravidea45fe42010-12-30 06:26:55 +000072 [DCB_ATTR_FEATCFG] = {.type = NLA_NESTED},
Alexander Duyck2f90b862008-11-20 20:52:10 -080073};
74
75/* DCB priority flow control to User Priority nested attributes */
Alexey Dobriyanb54452b2010-02-18 08:14:31 +000076static const struct nla_policy dcbnl_pfc_up_nest[DCB_PFC_UP_ATTR_MAX + 1] = {
Alexander Duyck2f90b862008-11-20 20:52:10 -080077 [DCB_PFC_UP_ATTR_0] = {.type = NLA_U8},
78 [DCB_PFC_UP_ATTR_1] = {.type = NLA_U8},
79 [DCB_PFC_UP_ATTR_2] = {.type = NLA_U8},
80 [DCB_PFC_UP_ATTR_3] = {.type = NLA_U8},
81 [DCB_PFC_UP_ATTR_4] = {.type = NLA_U8},
82 [DCB_PFC_UP_ATTR_5] = {.type = NLA_U8},
83 [DCB_PFC_UP_ATTR_6] = {.type = NLA_U8},
84 [DCB_PFC_UP_ATTR_7] = {.type = NLA_U8},
85 [DCB_PFC_UP_ATTR_ALL] = {.type = NLA_FLAG},
86};
87
88/* DCB priority grouping nested attributes */
Alexey Dobriyanb54452b2010-02-18 08:14:31 +000089static const struct nla_policy dcbnl_pg_nest[DCB_PG_ATTR_MAX + 1] = {
Alexander Duyck2f90b862008-11-20 20:52:10 -080090 [DCB_PG_ATTR_TC_0] = {.type = NLA_NESTED},
91 [DCB_PG_ATTR_TC_1] = {.type = NLA_NESTED},
92 [DCB_PG_ATTR_TC_2] = {.type = NLA_NESTED},
93 [DCB_PG_ATTR_TC_3] = {.type = NLA_NESTED},
94 [DCB_PG_ATTR_TC_4] = {.type = NLA_NESTED},
95 [DCB_PG_ATTR_TC_5] = {.type = NLA_NESTED},
96 [DCB_PG_ATTR_TC_6] = {.type = NLA_NESTED},
97 [DCB_PG_ATTR_TC_7] = {.type = NLA_NESTED},
98 [DCB_PG_ATTR_TC_ALL] = {.type = NLA_NESTED},
99 [DCB_PG_ATTR_BW_ID_0] = {.type = NLA_U8},
100 [DCB_PG_ATTR_BW_ID_1] = {.type = NLA_U8},
101 [DCB_PG_ATTR_BW_ID_2] = {.type = NLA_U8},
102 [DCB_PG_ATTR_BW_ID_3] = {.type = NLA_U8},
103 [DCB_PG_ATTR_BW_ID_4] = {.type = NLA_U8},
104 [DCB_PG_ATTR_BW_ID_5] = {.type = NLA_U8},
105 [DCB_PG_ATTR_BW_ID_6] = {.type = NLA_U8},
106 [DCB_PG_ATTR_BW_ID_7] = {.type = NLA_U8},
107 [DCB_PG_ATTR_BW_ID_ALL] = {.type = NLA_FLAG},
108};
109
110/* DCB traffic class nested attributes. */
Alexey Dobriyanb54452b2010-02-18 08:14:31 +0000111static const struct nla_policy dcbnl_tc_param_nest[DCB_TC_ATTR_PARAM_MAX + 1] = {
Alexander Duyck2f90b862008-11-20 20:52:10 -0800112 [DCB_TC_ATTR_PARAM_PGID] = {.type = NLA_U8},
113 [DCB_TC_ATTR_PARAM_UP_MAPPING] = {.type = NLA_U8},
114 [DCB_TC_ATTR_PARAM_STRICT_PRIO] = {.type = NLA_U8},
115 [DCB_TC_ATTR_PARAM_BW_PCT] = {.type = NLA_U8},
116 [DCB_TC_ATTR_PARAM_ALL] = {.type = NLA_FLAG},
117};
118
Alexander Duyck46132182008-11-20 21:05:08 -0800119/* DCB capabilities nested attributes. */
Alexey Dobriyanb54452b2010-02-18 08:14:31 +0000120static const struct nla_policy dcbnl_cap_nest[DCB_CAP_ATTR_MAX + 1] = {
Alexander Duyck46132182008-11-20 21:05:08 -0800121 [DCB_CAP_ATTR_ALL] = {.type = NLA_FLAG},
122 [DCB_CAP_ATTR_PG] = {.type = NLA_U8},
123 [DCB_CAP_ATTR_PFC] = {.type = NLA_U8},
124 [DCB_CAP_ATTR_UP2TC] = {.type = NLA_U8},
125 [DCB_CAP_ATTR_PG_TCS] = {.type = NLA_U8},
126 [DCB_CAP_ATTR_PFC_TCS] = {.type = NLA_U8},
127 [DCB_CAP_ATTR_GSP] = {.type = NLA_U8},
128 [DCB_CAP_ATTR_BCN] = {.type = NLA_U8},
Shmulik Ravid6241b622010-12-30 06:26:48 +0000129 [DCB_CAP_ATTR_DCBX] = {.type = NLA_U8},
Alexander Duyck46132182008-11-20 21:05:08 -0800130};
Alexander Duyck2f90b862008-11-20 20:52:10 -0800131
Alexander Duyck33dbabc2008-11-20 21:08:19 -0800132/* DCB capabilities nested attributes. */
Alexey Dobriyanb54452b2010-02-18 08:14:31 +0000133static const struct nla_policy dcbnl_numtcs_nest[DCB_NUMTCS_ATTR_MAX + 1] = {
Alexander Duyck33dbabc2008-11-20 21:08:19 -0800134 [DCB_NUMTCS_ATTR_ALL] = {.type = NLA_FLAG},
135 [DCB_NUMTCS_ATTR_PG] = {.type = NLA_U8},
136 [DCB_NUMTCS_ATTR_PFC] = {.type = NLA_U8},
137};
138
Alexander Duyck859ee3c2008-11-20 21:10:23 -0800139/* DCB BCN nested attributes. */
Alexey Dobriyanb54452b2010-02-18 08:14:31 +0000140static const struct nla_policy dcbnl_bcn_nest[DCB_BCN_ATTR_MAX + 1] = {
Alexander Duyck859ee3c2008-11-20 21:10:23 -0800141 [DCB_BCN_ATTR_RP_0] = {.type = NLA_U8},
142 [DCB_BCN_ATTR_RP_1] = {.type = NLA_U8},
143 [DCB_BCN_ATTR_RP_2] = {.type = NLA_U8},
144 [DCB_BCN_ATTR_RP_3] = {.type = NLA_U8},
145 [DCB_BCN_ATTR_RP_4] = {.type = NLA_U8},
146 [DCB_BCN_ATTR_RP_5] = {.type = NLA_U8},
147 [DCB_BCN_ATTR_RP_6] = {.type = NLA_U8},
148 [DCB_BCN_ATTR_RP_7] = {.type = NLA_U8},
149 [DCB_BCN_ATTR_RP_ALL] = {.type = NLA_FLAG},
Don Skidmoref4314e82008-12-21 20:10:29 -0800150 [DCB_BCN_ATTR_BCNA_0] = {.type = NLA_U32},
151 [DCB_BCN_ATTR_BCNA_1] = {.type = NLA_U32},
Alexander Duyck859ee3c2008-11-20 21:10:23 -0800152 [DCB_BCN_ATTR_ALPHA] = {.type = NLA_U32},
153 [DCB_BCN_ATTR_BETA] = {.type = NLA_U32},
154 [DCB_BCN_ATTR_GD] = {.type = NLA_U32},
155 [DCB_BCN_ATTR_GI] = {.type = NLA_U32},
156 [DCB_BCN_ATTR_TMAX] = {.type = NLA_U32},
157 [DCB_BCN_ATTR_TD] = {.type = NLA_U32},
158 [DCB_BCN_ATTR_RMIN] = {.type = NLA_U32},
159 [DCB_BCN_ATTR_W] = {.type = NLA_U32},
160 [DCB_BCN_ATTR_RD] = {.type = NLA_U32},
161 [DCB_BCN_ATTR_RU] = {.type = NLA_U32},
162 [DCB_BCN_ATTR_WRTT] = {.type = NLA_U32},
163 [DCB_BCN_ATTR_RI] = {.type = NLA_U32},
164 [DCB_BCN_ATTR_C] = {.type = NLA_U32},
165 [DCB_BCN_ATTR_ALL] = {.type = NLA_FLAG},
166};
167
Yi Zou6fa382a2009-08-31 12:33:20 +0000168/* DCB APP nested attributes. */
Alexey Dobriyanb54452b2010-02-18 08:14:31 +0000169static const struct nla_policy dcbnl_app_nest[DCB_APP_ATTR_MAX + 1] = {
Yi Zou6fa382a2009-08-31 12:33:20 +0000170 [DCB_APP_ATTR_IDTYPE] = {.type = NLA_U8},
171 [DCB_APP_ATTR_ID] = {.type = NLA_U16},
172 [DCB_APP_ATTR_PRIORITY] = {.type = NLA_U8},
173};
174
John Fastabend3e290272010-12-30 09:25:46 +0000175/* IEEE 802.1Qaz nested attributes. */
176static const struct nla_policy dcbnl_ieee_policy[DCB_ATTR_IEEE_MAX + 1] = {
177 [DCB_ATTR_IEEE_ETS] = {.len = sizeof(struct ieee_ets)},
178 [DCB_ATTR_IEEE_PFC] = {.len = sizeof(struct ieee_pfc)},
179 [DCB_ATTR_IEEE_APP_TABLE] = {.type = NLA_NESTED},
180};
181
182static const struct nla_policy dcbnl_ieee_app[DCB_ATTR_IEEE_APP_MAX + 1] = {
183 [DCB_ATTR_IEEE_APP] = {.len = sizeof(struct dcb_app)},
184};
185
Shmulik Ravidea45fe42010-12-30 06:26:55 +0000186/* DCB number of traffic classes nested attributes. */
187static const struct nla_policy dcbnl_featcfg_nest[DCB_FEATCFG_ATTR_MAX + 1] = {
188 [DCB_FEATCFG_ATTR_ALL] = {.type = NLA_FLAG},
189 [DCB_FEATCFG_ATTR_PG] = {.type = NLA_U8},
190 [DCB_FEATCFG_ATTR_PFC] = {.type = NLA_U8},
191 [DCB_FEATCFG_ATTR_APP] = {.type = NLA_U8},
192};
193
John Fastabend9ab933a2010-12-30 09:26:31 +0000194static LIST_HEAD(dcb_app_list);
195static DEFINE_SPINLOCK(dcb_lock);
196
Alexander Duyck2f90b862008-11-20 20:52:10 -0800197/* standard netlink reply call */
198static int dcbnl_reply(u8 value, u8 event, u8 cmd, u8 attr, u32 pid,
199 u32 seq, u16 flags)
200{
201 struct sk_buff *dcbnl_skb;
202 struct dcbmsg *dcb;
203 struct nlmsghdr *nlh;
204 int ret = -EINVAL;
205
206 dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
207 if (!dcbnl_skb)
208 return ret;
209
210 nlh = NLMSG_NEW(dcbnl_skb, pid, seq, event, sizeof(*dcb), flags);
211
212 dcb = NLMSG_DATA(nlh);
213 dcb->dcb_family = AF_UNSPEC;
214 dcb->cmd = cmd;
215 dcb->dcb_pad = 0;
216
217 ret = nla_put_u8(dcbnl_skb, attr, value);
218 if (ret)
219 goto err;
220
221 /* end the message, assign the nlmsg_len. */
222 nlmsg_end(dcbnl_skb, nlh);
223 ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
224 if (ret)
John Fastabend7eaf5072009-09-25 13:12:03 +0000225 return -EINVAL;
Alexander Duyck2f90b862008-11-20 20:52:10 -0800226
227 return 0;
228nlmsg_failure:
229err:
Roel Kluin858eb712009-01-04 17:29:21 -0800230 kfree_skb(dcbnl_skb);
Alexander Duyck2f90b862008-11-20 20:52:10 -0800231 return ret;
232}
233
234static int dcbnl_getstate(struct net_device *netdev, struct nlattr **tb,
235 u32 pid, u32 seq, u16 flags)
236{
237 int ret = -EINVAL;
238
239 /* if (!tb[DCB_ATTR_STATE] || !netdev->dcbnl_ops->getstate) */
240 if (!netdev->dcbnl_ops->getstate)
241 return ret;
242
243 ret = dcbnl_reply(netdev->dcbnl_ops->getstate(netdev), RTM_GETDCB,
244 DCB_CMD_GSTATE, DCB_ATTR_STATE, pid, seq, flags);
245
246 return ret;
247}
248
249static int dcbnl_getpfccfg(struct net_device *netdev, struct nlattr **tb,
250 u32 pid, u32 seq, u16 flags)
251{
252 struct sk_buff *dcbnl_skb;
253 struct nlmsghdr *nlh;
254 struct dcbmsg *dcb;
255 struct nlattr *data[DCB_PFC_UP_ATTR_MAX + 1], *nest;
256 u8 value;
257 int ret = -EINVAL;
258 int i;
259 int getall = 0;
260
261 if (!tb[DCB_ATTR_PFC_CFG] || !netdev->dcbnl_ops->getpfccfg)
262 return ret;
263
264 ret = nla_parse_nested(data, DCB_PFC_UP_ATTR_MAX,
265 tb[DCB_ATTR_PFC_CFG],
266 dcbnl_pfc_up_nest);
267 if (ret)
268 goto err_out;
269
270 dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
271 if (!dcbnl_skb)
272 goto err_out;
273
274 nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
275
276 dcb = NLMSG_DATA(nlh);
277 dcb->dcb_family = AF_UNSPEC;
278 dcb->cmd = DCB_CMD_PFC_GCFG;
279
280 nest = nla_nest_start(dcbnl_skb, DCB_ATTR_PFC_CFG);
281 if (!nest)
282 goto err;
283
284 if (data[DCB_PFC_UP_ATTR_ALL])
285 getall = 1;
286
287 for (i = DCB_PFC_UP_ATTR_0; i <= DCB_PFC_UP_ATTR_7; i++) {
288 if (!getall && !data[i])
289 continue;
290
291 netdev->dcbnl_ops->getpfccfg(netdev, i - DCB_PFC_UP_ATTR_0,
292 &value);
293 ret = nla_put_u8(dcbnl_skb, i, value);
294
295 if (ret) {
296 nla_nest_cancel(dcbnl_skb, nest);
297 goto err;
298 }
299 }
300 nla_nest_end(dcbnl_skb, nest);
301
302 nlmsg_end(dcbnl_skb, nlh);
303
304 ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
305 if (ret)
John Fastabend7eaf5072009-09-25 13:12:03 +0000306 goto err_out;
Alexander Duyck2f90b862008-11-20 20:52:10 -0800307
308 return 0;
309nlmsg_failure:
310err:
Roel Kluin858eb712009-01-04 17:29:21 -0800311 kfree_skb(dcbnl_skb);
Alexander Duyck2f90b862008-11-20 20:52:10 -0800312err_out:
313 return -EINVAL;
314}
315
316static int dcbnl_getperm_hwaddr(struct net_device *netdev, struct nlattr **tb,
317 u32 pid, u32 seq, u16 flags)
318{
319 struct sk_buff *dcbnl_skb;
320 struct nlmsghdr *nlh;
321 struct dcbmsg *dcb;
322 u8 perm_addr[MAX_ADDR_LEN];
323 int ret = -EINVAL;
324
325 if (!netdev->dcbnl_ops->getpermhwaddr)
326 return ret;
327
328 dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
329 if (!dcbnl_skb)
330 goto err_out;
331
332 nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
333
334 dcb = NLMSG_DATA(nlh);
335 dcb->dcb_family = AF_UNSPEC;
336 dcb->cmd = DCB_CMD_GPERM_HWADDR;
337
338 netdev->dcbnl_ops->getpermhwaddr(netdev, perm_addr);
339
340 ret = nla_put(dcbnl_skb, DCB_ATTR_PERM_HWADDR, sizeof(perm_addr),
341 perm_addr);
342
343 nlmsg_end(dcbnl_skb, nlh);
344
345 ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
346 if (ret)
John Fastabend7eaf5072009-09-25 13:12:03 +0000347 goto err_out;
Alexander Duyck2f90b862008-11-20 20:52:10 -0800348
349 return 0;
350
351nlmsg_failure:
Roel Kluin858eb712009-01-04 17:29:21 -0800352 kfree_skb(dcbnl_skb);
Alexander Duyck2f90b862008-11-20 20:52:10 -0800353err_out:
354 return -EINVAL;
355}
356
Alexander Duyck46132182008-11-20 21:05:08 -0800357static int dcbnl_getcap(struct net_device *netdev, struct nlattr **tb,
358 u32 pid, u32 seq, u16 flags)
359{
360 struct sk_buff *dcbnl_skb;
361 struct nlmsghdr *nlh;
362 struct dcbmsg *dcb;
363 struct nlattr *data[DCB_CAP_ATTR_MAX + 1], *nest;
364 u8 value;
365 int ret = -EINVAL;
366 int i;
367 int getall = 0;
368
369 if (!tb[DCB_ATTR_CAP] || !netdev->dcbnl_ops->getcap)
370 return ret;
371
372 ret = nla_parse_nested(data, DCB_CAP_ATTR_MAX, tb[DCB_ATTR_CAP],
373 dcbnl_cap_nest);
374 if (ret)
375 goto err_out;
376
377 dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
378 if (!dcbnl_skb)
379 goto err_out;
380
381 nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
382
383 dcb = NLMSG_DATA(nlh);
384 dcb->dcb_family = AF_UNSPEC;
385 dcb->cmd = DCB_CMD_GCAP;
386
387 nest = nla_nest_start(dcbnl_skb, DCB_ATTR_CAP);
388 if (!nest)
389 goto err;
390
391 if (data[DCB_CAP_ATTR_ALL])
392 getall = 1;
393
394 for (i = DCB_CAP_ATTR_ALL+1; i <= DCB_CAP_ATTR_MAX; i++) {
395 if (!getall && !data[i])
396 continue;
397
398 if (!netdev->dcbnl_ops->getcap(netdev, i, &value)) {
399 ret = nla_put_u8(dcbnl_skb, i, value);
400
401 if (ret) {
402 nla_nest_cancel(dcbnl_skb, nest);
403 goto err;
404 }
405 }
406 }
407 nla_nest_end(dcbnl_skb, nest);
408
409 nlmsg_end(dcbnl_skb, nlh);
410
411 ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
412 if (ret)
John Fastabend7eaf5072009-09-25 13:12:03 +0000413 goto err_out;
Alexander Duyck46132182008-11-20 21:05:08 -0800414
415 return 0;
416nlmsg_failure:
417err:
Roel Kluin858eb712009-01-04 17:29:21 -0800418 kfree_skb(dcbnl_skb);
Alexander Duyck46132182008-11-20 21:05:08 -0800419err_out:
420 return -EINVAL;
421}
422
Alexander Duyck33dbabc2008-11-20 21:08:19 -0800423static int dcbnl_getnumtcs(struct net_device *netdev, struct nlattr **tb,
424 u32 pid, u32 seq, u16 flags)
425{
426 struct sk_buff *dcbnl_skb;
427 struct nlmsghdr *nlh;
428 struct dcbmsg *dcb;
429 struct nlattr *data[DCB_NUMTCS_ATTR_MAX + 1], *nest;
430 u8 value;
431 int ret = -EINVAL;
432 int i;
433 int getall = 0;
434
435 if (!tb[DCB_ATTR_NUMTCS] || !netdev->dcbnl_ops->getnumtcs)
436 return ret;
437
438 ret = nla_parse_nested(data, DCB_NUMTCS_ATTR_MAX, tb[DCB_ATTR_NUMTCS],
439 dcbnl_numtcs_nest);
440 if (ret) {
441 ret = -EINVAL;
442 goto err_out;
443 }
444
445 dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
446 if (!dcbnl_skb) {
447 ret = -EINVAL;
448 goto err_out;
449 }
450
451 nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
452
453 dcb = NLMSG_DATA(nlh);
454 dcb->dcb_family = AF_UNSPEC;
455 dcb->cmd = DCB_CMD_GNUMTCS;
456
457 nest = nla_nest_start(dcbnl_skb, DCB_ATTR_NUMTCS);
458 if (!nest) {
459 ret = -EINVAL;
460 goto err;
461 }
462
463 if (data[DCB_NUMTCS_ATTR_ALL])
464 getall = 1;
465
466 for (i = DCB_NUMTCS_ATTR_ALL+1; i <= DCB_NUMTCS_ATTR_MAX; i++) {
467 if (!getall && !data[i])
468 continue;
469
470 ret = netdev->dcbnl_ops->getnumtcs(netdev, i, &value);
471 if (!ret) {
472 ret = nla_put_u8(dcbnl_skb, i, value);
473
474 if (ret) {
475 nla_nest_cancel(dcbnl_skb, nest);
476 ret = -EINVAL;
477 goto err;
478 }
479 } else {
480 goto err;
481 }
482 }
483 nla_nest_end(dcbnl_skb, nest);
484
485 nlmsg_end(dcbnl_skb, nlh);
486
487 ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
488 if (ret) {
489 ret = -EINVAL;
John Fastabend7eaf5072009-09-25 13:12:03 +0000490 goto err_out;
Alexander Duyck33dbabc2008-11-20 21:08:19 -0800491 }
492
493 return 0;
494nlmsg_failure:
495err:
Roel Kluin858eb712009-01-04 17:29:21 -0800496 kfree_skb(dcbnl_skb);
Alexander Duyck33dbabc2008-11-20 21:08:19 -0800497err_out:
498 return ret;
499}
500
501static int dcbnl_setnumtcs(struct net_device *netdev, struct nlattr **tb,
502 u32 pid, u32 seq, u16 flags)
503{
504 struct nlattr *data[DCB_NUMTCS_ATTR_MAX + 1];
505 int ret = -EINVAL;
506 u8 value;
507 int i;
508
Don Skidmore8b124a82008-12-15 01:06:23 -0800509 if (!tb[DCB_ATTR_NUMTCS] || !netdev->dcbnl_ops->setnumtcs)
Alexander Duyck33dbabc2008-11-20 21:08:19 -0800510 return ret;
511
512 ret = nla_parse_nested(data, DCB_NUMTCS_ATTR_MAX, tb[DCB_ATTR_NUMTCS],
513 dcbnl_numtcs_nest);
514
515 if (ret) {
516 ret = -EINVAL;
517 goto err;
518 }
519
520 for (i = DCB_NUMTCS_ATTR_ALL+1; i <= DCB_NUMTCS_ATTR_MAX; i++) {
521 if (data[i] == NULL)
522 continue;
523
524 value = nla_get_u8(data[i]);
525
526 ret = netdev->dcbnl_ops->setnumtcs(netdev, i, value);
527
528 if (ret)
529 goto operr;
530 }
531
532operr:
533 ret = dcbnl_reply(!!ret, RTM_SETDCB, DCB_CMD_SNUMTCS,
534 DCB_ATTR_NUMTCS, pid, seq, flags);
535
536err:
537 return ret;
538}
539
Alexander Duyck0eb3aa92008-11-20 21:09:23 -0800540static int dcbnl_getpfcstate(struct net_device *netdev, struct nlattr **tb,
541 u32 pid, u32 seq, u16 flags)
542{
543 int ret = -EINVAL;
544
545 if (!netdev->dcbnl_ops->getpfcstate)
546 return ret;
547
548 ret = dcbnl_reply(netdev->dcbnl_ops->getpfcstate(netdev), RTM_GETDCB,
549 DCB_CMD_PFC_GSTATE, DCB_ATTR_PFC_STATE,
550 pid, seq, flags);
551
552 return ret;
553}
554
555static int dcbnl_setpfcstate(struct net_device *netdev, struct nlattr **tb,
556 u32 pid, u32 seq, u16 flags)
557{
558 int ret = -EINVAL;
559 u8 value;
560
561 if (!tb[DCB_ATTR_PFC_STATE] || !netdev->dcbnl_ops->setpfcstate)
562 return ret;
563
564 value = nla_get_u8(tb[DCB_ATTR_PFC_STATE]);
565
566 netdev->dcbnl_ops->setpfcstate(netdev, value);
567
568 ret = dcbnl_reply(0, RTM_SETDCB, DCB_CMD_PFC_SSTATE, DCB_ATTR_PFC_STATE,
569 pid, seq, flags);
570
571 return ret;
572}
573
Yi Zou57949682009-08-31 12:33:40 +0000574static int dcbnl_getapp(struct net_device *netdev, struct nlattr **tb,
575 u32 pid, u32 seq, u16 flags)
576{
577 struct sk_buff *dcbnl_skb;
578 struct nlmsghdr *nlh;
579 struct dcbmsg *dcb;
580 struct nlattr *app_nest;
581 struct nlattr *app_tb[DCB_APP_ATTR_MAX + 1];
582 u16 id;
583 u8 up, idtype;
584 int ret = -EINVAL;
585
John Fastabend3dce38a2011-01-21 16:35:18 +0000586 if (!tb[DCB_ATTR_APP])
Yi Zou57949682009-08-31 12:33:40 +0000587 goto out;
588
589 ret = nla_parse_nested(app_tb, DCB_APP_ATTR_MAX, tb[DCB_ATTR_APP],
590 dcbnl_app_nest);
591 if (ret)
592 goto out;
593
594 ret = -EINVAL;
595 /* all must be non-null */
596 if ((!app_tb[DCB_APP_ATTR_IDTYPE]) ||
597 (!app_tb[DCB_APP_ATTR_ID]))
598 goto out;
599
600 /* either by eth type or by socket number */
601 idtype = nla_get_u8(app_tb[DCB_APP_ATTR_IDTYPE]);
602 if ((idtype != DCB_APP_IDTYPE_ETHTYPE) &&
603 (idtype != DCB_APP_IDTYPE_PORTNUM))
604 goto out;
605
606 id = nla_get_u16(app_tb[DCB_APP_ATTR_ID]);
John Fastabend3dce38a2011-01-21 16:35:18 +0000607
608 if (netdev->dcbnl_ops->getapp) {
609 up = netdev->dcbnl_ops->getapp(netdev, idtype, id);
610 } else {
611 struct dcb_app app = {
612 .selector = idtype,
613 .protocol = id,
614 };
615 up = dcb_getapp(netdev, &app);
616 }
Yi Zou57949682009-08-31 12:33:40 +0000617
618 /* send this back */
619 dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
620 if (!dcbnl_skb)
621 goto out;
622
623 nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
624 dcb = NLMSG_DATA(nlh);
625 dcb->dcb_family = AF_UNSPEC;
626 dcb->cmd = DCB_CMD_GAPP;
627
628 app_nest = nla_nest_start(dcbnl_skb, DCB_ATTR_APP);
Jesper Juhld3337de2011-02-10 11:57:16 +0000629 if (!app_nest)
630 goto out_cancel;
631
Yi Zou57949682009-08-31 12:33:40 +0000632 ret = nla_put_u8(dcbnl_skb, DCB_APP_ATTR_IDTYPE, idtype);
633 if (ret)
634 goto out_cancel;
635
636 ret = nla_put_u16(dcbnl_skb, DCB_APP_ATTR_ID, id);
637 if (ret)
638 goto out_cancel;
639
640 ret = nla_put_u8(dcbnl_skb, DCB_APP_ATTR_PRIORITY, up);
641 if (ret)
642 goto out_cancel;
643
644 nla_nest_end(dcbnl_skb, app_nest);
645 nlmsg_end(dcbnl_skb, nlh);
646
647 ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
648 if (ret)
649 goto nlmsg_failure;
650
651 goto out;
652
653out_cancel:
654 nla_nest_cancel(dcbnl_skb, app_nest);
655nlmsg_failure:
656 kfree_skb(dcbnl_skb);
657out:
658 return ret;
659}
660
661static int dcbnl_setapp(struct net_device *netdev, struct nlattr **tb,
662 u32 pid, u32 seq, u16 flags)
663{
John Fastabend9ab933a2010-12-30 09:26:31 +0000664 int err, ret = -EINVAL;
Yi Zou57949682009-08-31 12:33:40 +0000665 u16 id;
666 u8 up, idtype;
667 struct nlattr *app_tb[DCB_APP_ATTR_MAX + 1];
668
John Fastabend9ab933a2010-12-30 09:26:31 +0000669 if (!tb[DCB_ATTR_APP])
Yi Zou57949682009-08-31 12:33:40 +0000670 goto out;
671
672 ret = nla_parse_nested(app_tb, DCB_APP_ATTR_MAX, tb[DCB_ATTR_APP],
673 dcbnl_app_nest);
674 if (ret)
675 goto out;
676
677 ret = -EINVAL;
678 /* all must be non-null */
679 if ((!app_tb[DCB_APP_ATTR_IDTYPE]) ||
680 (!app_tb[DCB_APP_ATTR_ID]) ||
681 (!app_tb[DCB_APP_ATTR_PRIORITY]))
682 goto out;
683
684 /* either by eth type or by socket number */
685 idtype = nla_get_u8(app_tb[DCB_APP_ATTR_IDTYPE]);
686 if ((idtype != DCB_APP_IDTYPE_ETHTYPE) &&
687 (idtype != DCB_APP_IDTYPE_PORTNUM))
688 goto out;
689
690 id = nla_get_u16(app_tb[DCB_APP_ATTR_ID]);
691 up = nla_get_u8(app_tb[DCB_APP_ATTR_PRIORITY]);
692
John Fastabend9ab933a2010-12-30 09:26:31 +0000693 if (netdev->dcbnl_ops->setapp) {
694 err = netdev->dcbnl_ops->setapp(netdev, idtype, id, up);
695 } else {
696 struct dcb_app app;
697 app.selector = idtype;
698 app.protocol = id;
699 app.priority = up;
700 err = dcb_setapp(netdev, &app);
701 }
702
703 ret = dcbnl_reply(err, RTM_SETDCB, DCB_CMD_SAPP, DCB_ATTR_APP,
704 pid, seq, flags);
Yi Zou57949682009-08-31 12:33:40 +0000705out:
706 return ret;
707}
708
Alexander Duyck2f90b862008-11-20 20:52:10 -0800709static int __dcbnl_pg_getcfg(struct net_device *netdev, struct nlattr **tb,
710 u32 pid, u32 seq, u16 flags, int dir)
711{
712 struct sk_buff *dcbnl_skb;
713 struct nlmsghdr *nlh;
714 struct dcbmsg *dcb;
715 struct nlattr *pg_nest, *param_nest, *data;
716 struct nlattr *pg_tb[DCB_PG_ATTR_MAX + 1];
717 struct nlattr *param_tb[DCB_TC_ATTR_PARAM_MAX + 1];
718 u8 prio, pgid, tc_pct, up_map;
719 int ret = -EINVAL;
720 int getall = 0;
721 int i;
722
723 if (!tb[DCB_ATTR_PG_CFG] ||
724 !netdev->dcbnl_ops->getpgtccfgtx ||
725 !netdev->dcbnl_ops->getpgtccfgrx ||
726 !netdev->dcbnl_ops->getpgbwgcfgtx ||
727 !netdev->dcbnl_ops->getpgbwgcfgrx)
728 return ret;
729
730 ret = nla_parse_nested(pg_tb, DCB_PG_ATTR_MAX,
731 tb[DCB_ATTR_PG_CFG], dcbnl_pg_nest);
732
733 if (ret)
734 goto err_out;
735
736 dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
737 if (!dcbnl_skb)
738 goto err_out;
739
740 nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
741
742 dcb = NLMSG_DATA(nlh);
743 dcb->dcb_family = AF_UNSPEC;
744 dcb->cmd = (dir) ? DCB_CMD_PGRX_GCFG : DCB_CMD_PGTX_GCFG;
745
746 pg_nest = nla_nest_start(dcbnl_skb, DCB_ATTR_PG_CFG);
747 if (!pg_nest)
748 goto err;
749
750 if (pg_tb[DCB_PG_ATTR_TC_ALL])
751 getall = 1;
752
753 for (i = DCB_PG_ATTR_TC_0; i <= DCB_PG_ATTR_TC_7; i++) {
754 if (!getall && !pg_tb[i])
755 continue;
756
757 if (pg_tb[DCB_PG_ATTR_TC_ALL])
758 data = pg_tb[DCB_PG_ATTR_TC_ALL];
759 else
760 data = pg_tb[i];
761 ret = nla_parse_nested(param_tb, DCB_TC_ATTR_PARAM_MAX,
762 data, dcbnl_tc_param_nest);
763 if (ret)
764 goto err_pg;
765
766 param_nest = nla_nest_start(dcbnl_skb, i);
767 if (!param_nest)
768 goto err_pg;
769
770 pgid = DCB_ATTR_VALUE_UNDEFINED;
771 prio = DCB_ATTR_VALUE_UNDEFINED;
772 tc_pct = DCB_ATTR_VALUE_UNDEFINED;
773 up_map = DCB_ATTR_VALUE_UNDEFINED;
774
775 if (dir) {
776 /* Rx */
777 netdev->dcbnl_ops->getpgtccfgrx(netdev,
778 i - DCB_PG_ATTR_TC_0, &prio,
779 &pgid, &tc_pct, &up_map);
780 } else {
781 /* Tx */
782 netdev->dcbnl_ops->getpgtccfgtx(netdev,
783 i - DCB_PG_ATTR_TC_0, &prio,
784 &pgid, &tc_pct, &up_map);
785 }
786
787 if (param_tb[DCB_TC_ATTR_PARAM_PGID] ||
788 param_tb[DCB_TC_ATTR_PARAM_ALL]) {
789 ret = nla_put_u8(dcbnl_skb,
790 DCB_TC_ATTR_PARAM_PGID, pgid);
791 if (ret)
792 goto err_param;
793 }
794 if (param_tb[DCB_TC_ATTR_PARAM_UP_MAPPING] ||
795 param_tb[DCB_TC_ATTR_PARAM_ALL]) {
796 ret = nla_put_u8(dcbnl_skb,
797 DCB_TC_ATTR_PARAM_UP_MAPPING, up_map);
798 if (ret)
799 goto err_param;
800 }
801 if (param_tb[DCB_TC_ATTR_PARAM_STRICT_PRIO] ||
802 param_tb[DCB_TC_ATTR_PARAM_ALL]) {
803 ret = nla_put_u8(dcbnl_skb,
804 DCB_TC_ATTR_PARAM_STRICT_PRIO, prio);
805 if (ret)
806 goto err_param;
807 }
808 if (param_tb[DCB_TC_ATTR_PARAM_BW_PCT] ||
809 param_tb[DCB_TC_ATTR_PARAM_ALL]) {
810 ret = nla_put_u8(dcbnl_skb, DCB_TC_ATTR_PARAM_BW_PCT,
811 tc_pct);
812 if (ret)
813 goto err_param;
814 }
815 nla_nest_end(dcbnl_skb, param_nest);
816 }
817
818 if (pg_tb[DCB_PG_ATTR_BW_ID_ALL])
819 getall = 1;
820 else
821 getall = 0;
822
823 for (i = DCB_PG_ATTR_BW_ID_0; i <= DCB_PG_ATTR_BW_ID_7; i++) {
824 if (!getall && !pg_tb[i])
825 continue;
826
827 tc_pct = DCB_ATTR_VALUE_UNDEFINED;
828
829 if (dir) {
830 /* Rx */
831 netdev->dcbnl_ops->getpgbwgcfgrx(netdev,
832 i - DCB_PG_ATTR_BW_ID_0, &tc_pct);
833 } else {
834 /* Tx */
835 netdev->dcbnl_ops->getpgbwgcfgtx(netdev,
836 i - DCB_PG_ATTR_BW_ID_0, &tc_pct);
837 }
838 ret = nla_put_u8(dcbnl_skb, i, tc_pct);
839
840 if (ret)
841 goto err_pg;
842 }
843
844 nla_nest_end(dcbnl_skb, pg_nest);
845
846 nlmsg_end(dcbnl_skb, nlh);
847
848 ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
849 if (ret)
John Fastabend7eaf5072009-09-25 13:12:03 +0000850 goto err_out;
Alexander Duyck2f90b862008-11-20 20:52:10 -0800851
852 return 0;
853
854err_param:
855 nla_nest_cancel(dcbnl_skb, param_nest);
856err_pg:
857 nla_nest_cancel(dcbnl_skb, pg_nest);
858nlmsg_failure:
859err:
Roel Kluin858eb712009-01-04 17:29:21 -0800860 kfree_skb(dcbnl_skb);
Alexander Duyck2f90b862008-11-20 20:52:10 -0800861err_out:
862 ret = -EINVAL;
863 return ret;
864}
865
866static int dcbnl_pgtx_getcfg(struct net_device *netdev, struct nlattr **tb,
867 u32 pid, u32 seq, u16 flags)
868{
869 return __dcbnl_pg_getcfg(netdev, tb, pid, seq, flags, 0);
870}
871
872static int dcbnl_pgrx_getcfg(struct net_device *netdev, struct nlattr **tb,
873 u32 pid, u32 seq, u16 flags)
874{
875 return __dcbnl_pg_getcfg(netdev, tb, pid, seq, flags, 1);
876}
877
878static int dcbnl_setstate(struct net_device *netdev, struct nlattr **tb,
879 u32 pid, u32 seq, u16 flags)
880{
881 int ret = -EINVAL;
882 u8 value;
883
884 if (!tb[DCB_ATTR_STATE] || !netdev->dcbnl_ops->setstate)
885 return ret;
886
887 value = nla_get_u8(tb[DCB_ATTR_STATE]);
888
Don Skidmore1486a612008-12-21 20:09:50 -0800889 ret = dcbnl_reply(netdev->dcbnl_ops->setstate(netdev, value),
890 RTM_SETDCB, DCB_CMD_SSTATE, DCB_ATTR_STATE,
Alexander Duyck2f90b862008-11-20 20:52:10 -0800891 pid, seq, flags);
892
893 return ret;
894}
895
896static int dcbnl_setpfccfg(struct net_device *netdev, struct nlattr **tb,
897 u32 pid, u32 seq, u16 flags)
898{
899 struct nlattr *data[DCB_PFC_UP_ATTR_MAX + 1];
900 int i;
901 int ret = -EINVAL;
902 u8 value;
903
904 if (!tb[DCB_ATTR_PFC_CFG] || !netdev->dcbnl_ops->setpfccfg)
905 return ret;
906
907 ret = nla_parse_nested(data, DCB_PFC_UP_ATTR_MAX,
908 tb[DCB_ATTR_PFC_CFG],
909 dcbnl_pfc_up_nest);
910 if (ret)
911 goto err;
912
913 for (i = DCB_PFC_UP_ATTR_0; i <= DCB_PFC_UP_ATTR_7; i++) {
914 if (data[i] == NULL)
915 continue;
916 value = nla_get_u8(data[i]);
917 netdev->dcbnl_ops->setpfccfg(netdev,
918 data[i]->nla_type - DCB_PFC_UP_ATTR_0, value);
919 }
920
921 ret = dcbnl_reply(0, RTM_SETDCB, DCB_CMD_PFC_SCFG, DCB_ATTR_PFC_CFG,
922 pid, seq, flags);
923err:
924 return ret;
925}
926
927static int dcbnl_setall(struct net_device *netdev, struct nlattr **tb,
928 u32 pid, u32 seq, u16 flags)
929{
930 int ret = -EINVAL;
931
932 if (!tb[DCB_ATTR_SET_ALL] || !netdev->dcbnl_ops->setall)
933 return ret;
934
935 ret = dcbnl_reply(netdev->dcbnl_ops->setall(netdev), RTM_SETDCB,
936 DCB_CMD_SET_ALL, DCB_ATTR_SET_ALL, pid, seq, flags);
937
938 return ret;
939}
940
941static int __dcbnl_pg_setcfg(struct net_device *netdev, struct nlattr **tb,
942 u32 pid, u32 seq, u16 flags, int dir)
943{
944 struct nlattr *pg_tb[DCB_PG_ATTR_MAX + 1];
945 struct nlattr *param_tb[DCB_TC_ATTR_PARAM_MAX + 1];
946 int ret = -EINVAL;
947 int i;
948 u8 pgid;
949 u8 up_map;
950 u8 prio;
951 u8 tc_pct;
952
953 if (!tb[DCB_ATTR_PG_CFG] ||
954 !netdev->dcbnl_ops->setpgtccfgtx ||
955 !netdev->dcbnl_ops->setpgtccfgrx ||
956 !netdev->dcbnl_ops->setpgbwgcfgtx ||
957 !netdev->dcbnl_ops->setpgbwgcfgrx)
958 return ret;
959
960 ret = nla_parse_nested(pg_tb, DCB_PG_ATTR_MAX,
961 tb[DCB_ATTR_PG_CFG], dcbnl_pg_nest);
962 if (ret)
963 goto err;
964
965 for (i = DCB_PG_ATTR_TC_0; i <= DCB_PG_ATTR_TC_7; i++) {
966 if (!pg_tb[i])
967 continue;
968
969 ret = nla_parse_nested(param_tb, DCB_TC_ATTR_PARAM_MAX,
970 pg_tb[i], dcbnl_tc_param_nest);
971 if (ret)
972 goto err;
973
974 pgid = DCB_ATTR_VALUE_UNDEFINED;
975 prio = DCB_ATTR_VALUE_UNDEFINED;
976 tc_pct = DCB_ATTR_VALUE_UNDEFINED;
977 up_map = DCB_ATTR_VALUE_UNDEFINED;
978
979 if (param_tb[DCB_TC_ATTR_PARAM_STRICT_PRIO])
980 prio =
981 nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_STRICT_PRIO]);
982
983 if (param_tb[DCB_TC_ATTR_PARAM_PGID])
984 pgid = nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_PGID]);
985
986 if (param_tb[DCB_TC_ATTR_PARAM_BW_PCT])
987 tc_pct = nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_BW_PCT]);
988
989 if (param_tb[DCB_TC_ATTR_PARAM_UP_MAPPING])
990 up_map =
991 nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_UP_MAPPING]);
992
993 /* dir: Tx = 0, Rx = 1 */
994 if (dir) {
995 /* Rx */
996 netdev->dcbnl_ops->setpgtccfgrx(netdev,
997 i - DCB_PG_ATTR_TC_0,
998 prio, pgid, tc_pct, up_map);
999 } else {
1000 /* Tx */
1001 netdev->dcbnl_ops->setpgtccfgtx(netdev,
1002 i - DCB_PG_ATTR_TC_0,
1003 prio, pgid, tc_pct, up_map);
1004 }
1005 }
1006
1007 for (i = DCB_PG_ATTR_BW_ID_0; i <= DCB_PG_ATTR_BW_ID_7; i++) {
1008 if (!pg_tb[i])
1009 continue;
1010
1011 tc_pct = nla_get_u8(pg_tb[i]);
1012
1013 /* dir: Tx = 0, Rx = 1 */
1014 if (dir) {
1015 /* Rx */
1016 netdev->dcbnl_ops->setpgbwgcfgrx(netdev,
1017 i - DCB_PG_ATTR_BW_ID_0, tc_pct);
1018 } else {
1019 /* Tx */
1020 netdev->dcbnl_ops->setpgbwgcfgtx(netdev,
1021 i - DCB_PG_ATTR_BW_ID_0, tc_pct);
1022 }
1023 }
1024
1025 ret = dcbnl_reply(0, RTM_SETDCB,
1026 (dir ? DCB_CMD_PGRX_SCFG : DCB_CMD_PGTX_SCFG),
1027 DCB_ATTR_PG_CFG, pid, seq, flags);
1028
1029err:
1030 return ret;
1031}
1032
1033static int dcbnl_pgtx_setcfg(struct net_device *netdev, struct nlattr **tb,
1034 u32 pid, u32 seq, u16 flags)
1035{
1036 return __dcbnl_pg_setcfg(netdev, tb, pid, seq, flags, 0);
1037}
1038
1039static int dcbnl_pgrx_setcfg(struct net_device *netdev, struct nlattr **tb,
1040 u32 pid, u32 seq, u16 flags)
1041{
1042 return __dcbnl_pg_setcfg(netdev, tb, pid, seq, flags, 1);
1043}
1044
Alexander Duyck859ee3c2008-11-20 21:10:23 -08001045static int dcbnl_bcn_getcfg(struct net_device *netdev, struct nlattr **tb,
1046 u32 pid, u32 seq, u16 flags)
1047{
1048 struct sk_buff *dcbnl_skb;
1049 struct nlmsghdr *nlh;
1050 struct dcbmsg *dcb;
1051 struct nlattr *bcn_nest;
1052 struct nlattr *bcn_tb[DCB_BCN_ATTR_MAX + 1];
1053 u8 value_byte;
1054 u32 value_integer;
1055 int ret = -EINVAL;
1056 bool getall = false;
1057 int i;
1058
1059 if (!tb[DCB_ATTR_BCN] || !netdev->dcbnl_ops->getbcnrp ||
1060 !netdev->dcbnl_ops->getbcncfg)
1061 return ret;
1062
1063 ret = nla_parse_nested(bcn_tb, DCB_BCN_ATTR_MAX,
1064 tb[DCB_ATTR_BCN], dcbnl_bcn_nest);
1065
1066 if (ret)
1067 goto err_out;
1068
1069 dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1070 if (!dcbnl_skb)
1071 goto err_out;
1072
1073 nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
1074
1075 dcb = NLMSG_DATA(nlh);
1076 dcb->dcb_family = AF_UNSPEC;
1077 dcb->cmd = DCB_CMD_BCN_GCFG;
1078
1079 bcn_nest = nla_nest_start(dcbnl_skb, DCB_ATTR_BCN);
1080 if (!bcn_nest)
1081 goto err;
1082
1083 if (bcn_tb[DCB_BCN_ATTR_ALL])
1084 getall = true;
1085
1086 for (i = DCB_BCN_ATTR_RP_0; i <= DCB_BCN_ATTR_RP_7; i++) {
1087 if (!getall && !bcn_tb[i])
1088 continue;
1089
1090 netdev->dcbnl_ops->getbcnrp(netdev, i - DCB_BCN_ATTR_RP_0,
1091 &value_byte);
1092 ret = nla_put_u8(dcbnl_skb, i, value_byte);
1093 if (ret)
1094 goto err_bcn;
1095 }
1096
Don Skidmoref4314e82008-12-21 20:10:29 -08001097 for (i = DCB_BCN_ATTR_BCNA_0; i <= DCB_BCN_ATTR_RI; i++) {
Alexander Duyck859ee3c2008-11-20 21:10:23 -08001098 if (!getall && !bcn_tb[i])
1099 continue;
1100
1101 netdev->dcbnl_ops->getbcncfg(netdev, i,
1102 &value_integer);
1103 ret = nla_put_u32(dcbnl_skb, i, value_integer);
1104 if (ret)
1105 goto err_bcn;
1106 }
1107
1108 nla_nest_end(dcbnl_skb, bcn_nest);
1109
1110 nlmsg_end(dcbnl_skb, nlh);
1111
1112 ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
1113 if (ret)
John Fastabend7eaf5072009-09-25 13:12:03 +00001114 goto err_out;
Alexander Duyck859ee3c2008-11-20 21:10:23 -08001115
1116 return 0;
1117
1118err_bcn:
1119 nla_nest_cancel(dcbnl_skb, bcn_nest);
1120nlmsg_failure:
1121err:
Roel Kluin858eb712009-01-04 17:29:21 -08001122 kfree_skb(dcbnl_skb);
Alexander Duyck859ee3c2008-11-20 21:10:23 -08001123err_out:
1124 ret = -EINVAL;
1125 return ret;
1126}
1127
1128static int dcbnl_bcn_setcfg(struct net_device *netdev, struct nlattr **tb,
1129 u32 pid, u32 seq, u16 flags)
1130{
1131 struct nlattr *data[DCB_BCN_ATTR_MAX + 1];
1132 int i;
1133 int ret = -EINVAL;
1134 u8 value_byte;
1135 u32 value_int;
1136
Joe Perchesf64f9e72009-11-29 16:55:45 -08001137 if (!tb[DCB_ATTR_BCN] || !netdev->dcbnl_ops->setbcncfg ||
1138 !netdev->dcbnl_ops->setbcnrp)
Alexander Duyck859ee3c2008-11-20 21:10:23 -08001139 return ret;
1140
1141 ret = nla_parse_nested(data, DCB_BCN_ATTR_MAX,
1142 tb[DCB_ATTR_BCN],
1143 dcbnl_pfc_up_nest);
1144 if (ret)
1145 goto err;
1146
1147 for (i = DCB_BCN_ATTR_RP_0; i <= DCB_BCN_ATTR_RP_7; i++) {
1148 if (data[i] == NULL)
1149 continue;
1150 value_byte = nla_get_u8(data[i]);
1151 netdev->dcbnl_ops->setbcnrp(netdev,
1152 data[i]->nla_type - DCB_BCN_ATTR_RP_0, value_byte);
1153 }
1154
Don Skidmoref4314e82008-12-21 20:10:29 -08001155 for (i = DCB_BCN_ATTR_BCNA_0; i <= DCB_BCN_ATTR_RI; i++) {
Alexander Duyck859ee3c2008-11-20 21:10:23 -08001156 if (data[i] == NULL)
1157 continue;
1158 value_int = nla_get_u32(data[i]);
1159 netdev->dcbnl_ops->setbcncfg(netdev,
1160 i, value_int);
1161 }
1162
1163 ret = dcbnl_reply(0, RTM_SETDCB, DCB_CMD_BCN_SCFG, DCB_ATTR_BCN,
1164 pid, seq, flags);
1165err:
1166 return ret;
1167}
1168
John Fastabend3e290272010-12-30 09:25:46 +00001169/* Handle IEEE 802.1Qaz SET commands. If any requested operation can not
1170 * be completed the entire msg is aborted and error value is returned.
1171 * No attempt is made to reconcile the case where only part of the
1172 * cmd can be completed.
1173 */
1174static int dcbnl_ieee_set(struct net_device *netdev, struct nlattr **tb,
1175 u32 pid, u32 seq, u16 flags)
1176{
1177 const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
1178 struct nlattr *ieee[DCB_ATTR_IEEE_MAX + 1];
1179 int err = -EOPNOTSUPP;
1180
1181 if (!ops)
1182 goto err;
1183
1184 err = nla_parse_nested(ieee, DCB_ATTR_IEEE_MAX,
1185 tb[DCB_ATTR_IEEE], dcbnl_ieee_policy);
1186 if (err)
1187 goto err;
1188
1189 if (ieee[DCB_ATTR_IEEE_ETS] && ops->ieee_setets) {
1190 struct ieee_ets *ets = nla_data(ieee[DCB_ATTR_IEEE_ETS]);
1191 err = ops->ieee_setets(netdev, ets);
1192 if (err)
1193 goto err;
1194 }
1195
John Fastabendf3d7bc52011-03-02 10:35:33 +00001196 if (ieee[DCB_ATTR_IEEE_PFC] && ops->ieee_setpfc) {
John Fastabend3e290272010-12-30 09:25:46 +00001197 struct ieee_pfc *pfc = nla_data(ieee[DCB_ATTR_IEEE_PFC]);
1198 err = ops->ieee_setpfc(netdev, pfc);
1199 if (err)
1200 goto err;
1201 }
1202
John Fastabend9ab933a2010-12-30 09:26:31 +00001203 if (ieee[DCB_ATTR_IEEE_APP_TABLE]) {
John Fastabend3e290272010-12-30 09:25:46 +00001204 struct nlattr *attr;
1205 int rem;
1206
1207 nla_for_each_nested(attr, ieee[DCB_ATTR_IEEE_APP_TABLE], rem) {
1208 struct dcb_app *app_data;
1209 if (nla_type(attr) != DCB_ATTR_IEEE_APP)
1210 continue;
1211 app_data = nla_data(attr);
John Fastabend9ab933a2010-12-30 09:26:31 +00001212 if (ops->ieee_setapp)
1213 err = ops->ieee_setapp(netdev, app_data);
1214 else
1215 err = dcb_setapp(netdev, app_data);
John Fastabend3e290272010-12-30 09:25:46 +00001216 if (err)
1217 goto err;
1218 }
1219 }
1220
1221err:
1222 dcbnl_reply(err, RTM_SETDCB, DCB_CMD_IEEE_SET, DCB_ATTR_IEEE,
1223 pid, seq, flags);
1224 return err;
1225}
1226
Shmulik Raviddc6ed1d2011-02-27 05:04:38 +00001227static int dcbnl_build_peer_app(struct net_device *netdev, struct sk_buff* skb,
1228 int app_nested_type, int app_info_type,
1229 int app_entry_type)
Shmulik Ravideed84712011-02-27 05:04:31 +00001230{
1231 struct dcb_peer_app_info info;
1232 struct dcb_app *table = NULL;
1233 const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
1234 u16 app_count;
1235 int err;
1236
1237
1238 /**
1239 * retrieve the peer app configuration form the driver. If the driver
1240 * handlers fail exit without doing anything
1241 */
1242 err = ops->peer_getappinfo(netdev, &info, &app_count);
1243 if (!err && app_count) {
1244 table = kmalloc(sizeof(struct dcb_app) * app_count, GFP_KERNEL);
1245 if (!table)
1246 return -ENOMEM;
1247
1248 err = ops->peer_getapptable(netdev, table);
1249 }
1250
1251 if (!err) {
1252 u16 i;
1253 struct nlattr *app;
1254
1255 /**
1256 * build the message, from here on the only possible failure
1257 * is due to the skb size
1258 */
1259 err = -EMSGSIZE;
1260
Shmulik Raviddc6ed1d2011-02-27 05:04:38 +00001261 app = nla_nest_start(skb, app_nested_type);
Shmulik Ravideed84712011-02-27 05:04:31 +00001262 if (!app)
1263 goto nla_put_failure;
1264
Shmulik Raviddc6ed1d2011-02-27 05:04:38 +00001265 if (app_info_type)
1266 NLA_PUT(skb, app_info_type, sizeof(info), &info);
1267
Shmulik Ravideed84712011-02-27 05:04:31 +00001268 for (i = 0; i < app_count; i++)
Shmulik Raviddc6ed1d2011-02-27 05:04:38 +00001269 NLA_PUT(skb, app_entry_type, sizeof(struct dcb_app),
Shmulik Ravideed84712011-02-27 05:04:31 +00001270 &table[i]);
1271
1272 nla_nest_end(skb, app);
1273 }
1274 err = 0;
1275
1276nla_put_failure:
1277 kfree(table);
1278 return err;
1279}
John Fastabend3e290272010-12-30 09:25:46 +00001280
1281/* Handle IEEE 802.1Qaz GET commands. */
1282static int dcbnl_ieee_get(struct net_device *netdev, struct nlattr **tb,
1283 u32 pid, u32 seq, u16 flags)
1284{
1285 struct sk_buff *skb;
1286 struct nlmsghdr *nlh;
1287 struct dcbmsg *dcb;
John Fastabend9ab933a2010-12-30 09:26:31 +00001288 struct nlattr *ieee, *app;
1289 struct dcb_app_type *itr;
John Fastabend3e290272010-12-30 09:25:46 +00001290 const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
John Fastabendc7797ba2011-06-21 07:34:31 +00001291 int dcbx;
John Fastabend3e290272010-12-30 09:25:46 +00001292 int err;
1293
1294 if (!ops)
1295 return -EOPNOTSUPP;
1296
1297 skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1298 if (!skb)
1299 return -ENOBUFS;
1300
1301 nlh = NLMSG_NEW(skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
1302
1303 dcb = NLMSG_DATA(nlh);
1304 dcb->dcb_family = AF_UNSPEC;
1305 dcb->cmd = DCB_CMD_IEEE_GET;
1306
1307 NLA_PUT_STRING(skb, DCB_ATTR_IFNAME, netdev->name);
1308
1309 ieee = nla_nest_start(skb, DCB_ATTR_IEEE);
1310 if (!ieee)
1311 goto nla_put_failure;
1312
1313 if (ops->ieee_getets) {
1314 struct ieee_ets ets;
1315 err = ops->ieee_getets(netdev, &ets);
1316 if (!err)
1317 NLA_PUT(skb, DCB_ATTR_IEEE_ETS, sizeof(ets), &ets);
1318 }
1319
1320 if (ops->ieee_getpfc) {
1321 struct ieee_pfc pfc;
1322 err = ops->ieee_getpfc(netdev, &pfc);
1323 if (!err)
1324 NLA_PUT(skb, DCB_ATTR_IEEE_PFC, sizeof(pfc), &pfc);
1325 }
1326
John Fastabend9ab933a2010-12-30 09:26:31 +00001327 app = nla_nest_start(skb, DCB_ATTR_IEEE_APP_TABLE);
1328 if (!app)
1329 goto nla_put_failure;
1330
1331 spin_lock(&dcb_lock);
1332 list_for_each_entry(itr, &dcb_app_list, list) {
Dan Carpenter70bfa2d2011-01-04 21:03:12 +00001333 if (strncmp(itr->name, netdev->name, IFNAMSIZ) == 0) {
1334 err = nla_put(skb, DCB_ATTR_IEEE_APP, sizeof(itr->app),
1335 &itr->app);
1336 if (err) {
1337 spin_unlock(&dcb_lock);
1338 goto nla_put_failure;
1339 }
1340 }
John Fastabend9ab933a2010-12-30 09:26:31 +00001341 }
John Fastabendc7797ba2011-06-21 07:34:31 +00001342
1343 if (netdev->dcbnl_ops->getdcbx)
1344 dcbx = netdev->dcbnl_ops->getdcbx(netdev);
1345 else
1346 dcbx = -EOPNOTSUPP;
1347
John Fastabend9ab933a2010-12-30 09:26:31 +00001348 spin_unlock(&dcb_lock);
1349 nla_nest_end(skb, app);
1350
Shmulik Ravideed84712011-02-27 05:04:31 +00001351 /* get peer info if available */
1352 if (ops->ieee_peer_getets) {
1353 struct ieee_ets ets;
1354 err = ops->ieee_peer_getets(netdev, &ets);
1355 if (!err)
1356 NLA_PUT(skb, DCB_ATTR_IEEE_PEER_ETS, sizeof(ets), &ets);
1357 }
1358
1359 if (ops->ieee_peer_getpfc) {
1360 struct ieee_pfc pfc;
1361 err = ops->ieee_peer_getpfc(netdev, &pfc);
1362 if (!err)
1363 NLA_PUT(skb, DCB_ATTR_IEEE_PEER_PFC, sizeof(pfc), &pfc);
1364 }
1365
1366 if (ops->peer_getappinfo && ops->peer_getapptable) {
Shmulik Raviddc6ed1d2011-02-27 05:04:38 +00001367 err = dcbnl_build_peer_app(netdev, skb,
1368 DCB_ATTR_IEEE_PEER_APP,
1369 DCB_ATTR_IEEE_APP_UNSPEC,
1370 DCB_ATTR_IEEE_APP);
Shmulik Ravideed84712011-02-27 05:04:31 +00001371 if (err)
1372 goto nla_put_failure;
1373 }
1374
John Fastabend3e290272010-12-30 09:25:46 +00001375 nla_nest_end(skb, ieee);
John Fastabendc7797ba2011-06-21 07:34:31 +00001376 if (dcbx >= 0) {
1377 err = nla_put_u8(skb, DCB_ATTR_DCBX, dcbx);
1378 if (err)
1379 goto nla_put_failure;
1380 }
John Fastabend3e290272010-12-30 09:25:46 +00001381 nlmsg_end(skb, nlh);
1382
1383 return rtnl_unicast(skb, &init_net, pid);
1384nla_put_failure:
1385 nlmsg_cancel(skb, nlh);
1386nlmsg_failure:
1387 kfree_skb(skb);
1388 return -1;
1389}
1390
Shmulik Ravid6241b622010-12-30 06:26:48 +00001391/* DCBX configuration */
1392static int dcbnl_getdcbx(struct net_device *netdev, struct nlattr **tb,
1393 u32 pid, u32 seq, u16 flags)
1394{
Shmulik Ravid7f891cf2011-01-03 08:04:59 +00001395 int ret;
Shmulik Ravid6241b622010-12-30 06:26:48 +00001396
1397 if (!netdev->dcbnl_ops->getdcbx)
Shmulik Ravid7f891cf2011-01-03 08:04:59 +00001398 return -EOPNOTSUPP;
Shmulik Ravid6241b622010-12-30 06:26:48 +00001399
1400 ret = dcbnl_reply(netdev->dcbnl_ops->getdcbx(netdev), RTM_GETDCB,
1401 DCB_CMD_GDCBX, DCB_ATTR_DCBX, pid, seq, flags);
1402
1403 return ret;
1404}
1405
1406static int dcbnl_setdcbx(struct net_device *netdev, struct nlattr **tb,
1407 u32 pid, u32 seq, u16 flags)
1408{
Shmulik Ravid7f891cf2011-01-03 08:04:59 +00001409 int ret;
Shmulik Ravid6241b622010-12-30 06:26:48 +00001410 u8 value;
1411
Shmulik Ravid7f891cf2011-01-03 08:04:59 +00001412 if (!netdev->dcbnl_ops->setdcbx)
1413 return -EOPNOTSUPP;
1414
1415 if (!tb[DCB_ATTR_DCBX])
1416 return -EINVAL;
Shmulik Ravid6241b622010-12-30 06:26:48 +00001417
1418 value = nla_get_u8(tb[DCB_ATTR_DCBX]);
1419
1420 ret = dcbnl_reply(netdev->dcbnl_ops->setdcbx(netdev, value),
1421 RTM_SETDCB, DCB_CMD_SDCBX, DCB_ATTR_DCBX,
1422 pid, seq, flags);
1423
1424 return ret;
1425}
1426
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001427static int dcbnl_getfeatcfg(struct net_device *netdev, struct nlattr **tb,
1428 u32 pid, u32 seq, u16 flags)
1429{
1430 struct sk_buff *dcbnl_skb;
1431 struct nlmsghdr *nlh;
1432 struct dcbmsg *dcb;
1433 struct nlattr *data[DCB_FEATCFG_ATTR_MAX + 1], *nest;
1434 u8 value;
Shmulik Ravid7f891cf2011-01-03 08:04:59 +00001435 int ret, i;
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001436 int getall = 0;
1437
Shmulik Ravid7f891cf2011-01-03 08:04:59 +00001438 if (!netdev->dcbnl_ops->getfeatcfg)
1439 return -EOPNOTSUPP;
1440
1441 if (!tb[DCB_ATTR_FEATCFG])
1442 return -EINVAL;
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001443
1444 ret = nla_parse_nested(data, DCB_FEATCFG_ATTR_MAX, tb[DCB_ATTR_FEATCFG],
1445 dcbnl_featcfg_nest);
Shmulik Ravid7f891cf2011-01-03 08:04:59 +00001446 if (ret)
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001447 goto err_out;
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001448
1449 dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1450 if (!dcbnl_skb) {
Shmulik Ravid7f891cf2011-01-03 08:04:59 +00001451 ret = -ENOBUFS;
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001452 goto err_out;
1453 }
1454
1455 nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
1456
1457 dcb = NLMSG_DATA(nlh);
1458 dcb->dcb_family = AF_UNSPEC;
1459 dcb->cmd = DCB_CMD_GFEATCFG;
1460
1461 nest = nla_nest_start(dcbnl_skb, DCB_ATTR_FEATCFG);
1462 if (!nest) {
Shmulik Ravid7f891cf2011-01-03 08:04:59 +00001463 ret = -EMSGSIZE;
1464 goto nla_put_failure;
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001465 }
1466
1467 if (data[DCB_FEATCFG_ATTR_ALL])
1468 getall = 1;
1469
1470 for (i = DCB_FEATCFG_ATTR_ALL+1; i <= DCB_FEATCFG_ATTR_MAX; i++) {
1471 if (!getall && !data[i])
1472 continue;
1473
1474 ret = netdev->dcbnl_ops->getfeatcfg(netdev, i, &value);
Shmulik Ravid7f891cf2011-01-03 08:04:59 +00001475 if (!ret)
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001476 ret = nla_put_u8(dcbnl_skb, i, value);
1477
Shmulik Ravid7f891cf2011-01-03 08:04:59 +00001478 if (ret) {
1479 nla_nest_cancel(dcbnl_skb, nest);
1480 goto nla_put_failure;
1481 }
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001482 }
1483 nla_nest_end(dcbnl_skb, nest);
1484
1485 nlmsg_end(dcbnl_skb, nlh);
1486
Shmulik Ravid7f891cf2011-01-03 08:04:59 +00001487 return rtnl_unicast(dcbnl_skb, &init_net, pid);
1488nla_put_failure:
1489 nlmsg_cancel(dcbnl_skb, nlh);
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001490nlmsg_failure:
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001491 kfree_skb(dcbnl_skb);
1492err_out:
1493 return ret;
1494}
1495
1496static int dcbnl_setfeatcfg(struct net_device *netdev, struct nlattr **tb,
1497 u32 pid, u32 seq, u16 flags)
1498{
1499 struct nlattr *data[DCB_FEATCFG_ATTR_MAX + 1];
Shmulik Ravid7f891cf2011-01-03 08:04:59 +00001500 int ret, i;
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001501 u8 value;
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001502
Shmulik Ravid7f891cf2011-01-03 08:04:59 +00001503 if (!netdev->dcbnl_ops->setfeatcfg)
1504 return -ENOTSUPP;
1505
1506 if (!tb[DCB_ATTR_FEATCFG])
1507 return -EINVAL;
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001508
1509 ret = nla_parse_nested(data, DCB_FEATCFG_ATTR_MAX, tb[DCB_ATTR_FEATCFG],
1510 dcbnl_featcfg_nest);
1511
Shmulik Ravid7f891cf2011-01-03 08:04:59 +00001512 if (ret)
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001513 goto err;
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001514
1515 for (i = DCB_FEATCFG_ATTR_ALL+1; i <= DCB_FEATCFG_ATTR_MAX; i++) {
1516 if (data[i] == NULL)
1517 continue;
1518
1519 value = nla_get_u8(data[i]);
1520
1521 ret = netdev->dcbnl_ops->setfeatcfg(netdev, i, value);
1522
1523 if (ret)
Shmulik Ravid7f891cf2011-01-03 08:04:59 +00001524 goto err;
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001525 }
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001526err:
Shmulik Ravid7f891cf2011-01-03 08:04:59 +00001527 dcbnl_reply(ret, RTM_SETDCB, DCB_CMD_SFEATCFG, DCB_ATTR_FEATCFG,
1528 pid, seq, flags);
1529
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001530 return ret;
1531}
1532
Shmulik Raviddc6ed1d2011-02-27 05:04:38 +00001533/* Handle CEE DCBX GET commands. */
1534static int dcbnl_cee_get(struct net_device *netdev, struct nlattr **tb,
1535 u32 pid, u32 seq, u16 flags)
1536{
1537 struct sk_buff *skb;
1538 struct nlmsghdr *nlh;
1539 struct dcbmsg *dcb;
1540 struct nlattr *cee;
1541 const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
1542 int err;
1543
1544 if (!ops)
1545 return -EOPNOTSUPP;
1546
1547 skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1548 if (!skb)
1549 return -ENOBUFS;
1550
1551 nlh = NLMSG_NEW(skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
1552
1553 dcb = NLMSG_DATA(nlh);
1554 dcb->dcb_family = AF_UNSPEC;
1555 dcb->cmd = DCB_CMD_CEE_GET;
1556
1557 NLA_PUT_STRING(skb, DCB_ATTR_IFNAME, netdev->name);
1558
1559 cee = nla_nest_start(skb, DCB_ATTR_CEE);
1560 if (!cee)
1561 goto nla_put_failure;
1562
1563 /* get peer info if available */
1564 if (ops->cee_peer_getpg) {
1565 struct cee_pg pg;
1566 err = ops->cee_peer_getpg(netdev, &pg);
1567 if (!err)
1568 NLA_PUT(skb, DCB_ATTR_CEE_PEER_PG, sizeof(pg), &pg);
1569 }
1570
1571 if (ops->cee_peer_getpfc) {
1572 struct cee_pfc pfc;
1573 err = ops->cee_peer_getpfc(netdev, &pfc);
1574 if (!err)
1575 NLA_PUT(skb, DCB_ATTR_CEE_PEER_PFC, sizeof(pfc), &pfc);
1576 }
1577
1578 if (ops->peer_getappinfo && ops->peer_getapptable) {
1579 err = dcbnl_build_peer_app(netdev, skb,
1580 DCB_ATTR_CEE_PEER_APP_TABLE,
1581 DCB_ATTR_CEE_PEER_APP_INFO,
1582 DCB_ATTR_CEE_PEER_APP);
1583 if (err)
1584 goto nla_put_failure;
1585 }
1586
1587 nla_nest_end(skb, cee);
1588 nlmsg_end(skb, nlh);
1589
1590 return rtnl_unicast(skb, &init_net, pid);
1591nla_put_failure:
1592 nlmsg_cancel(skb, nlh);
1593nlmsg_failure:
1594 kfree_skb(skb);
1595 return -1;
1596}
1597
Alexander Duyck2f90b862008-11-20 20:52:10 -08001598static int dcb_doit(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
1599{
1600 struct net *net = sock_net(skb->sk);
1601 struct net_device *netdev;
1602 struct dcbmsg *dcb = (struct dcbmsg *)NLMSG_DATA(nlh);
1603 struct nlattr *tb[DCB_ATTR_MAX + 1];
1604 u32 pid = skb ? NETLINK_CB(skb).pid : 0;
1605 int ret = -EINVAL;
1606
Octavian Purdila09ad9bc2009-11-25 15:14:13 -08001607 if (!net_eq(net, &init_net))
Alexander Duyck2f90b862008-11-20 20:52:10 -08001608 return -EINVAL;
1609
1610 ret = nlmsg_parse(nlh, sizeof(*dcb), tb, DCB_ATTR_MAX,
1611 dcbnl_rtnl_policy);
1612 if (ret < 0)
1613 return ret;
1614
1615 if (!tb[DCB_ATTR_IFNAME])
1616 return -EINVAL;
1617
1618 netdev = dev_get_by_name(&init_net, nla_data(tb[DCB_ATTR_IFNAME]));
1619 if (!netdev)
1620 return -EINVAL;
1621
1622 if (!netdev->dcbnl_ops)
1623 goto errout;
1624
1625 switch (dcb->cmd) {
1626 case DCB_CMD_GSTATE:
1627 ret = dcbnl_getstate(netdev, tb, pid, nlh->nlmsg_seq,
1628 nlh->nlmsg_flags);
1629 goto out;
1630 case DCB_CMD_PFC_GCFG:
1631 ret = dcbnl_getpfccfg(netdev, tb, pid, nlh->nlmsg_seq,
1632 nlh->nlmsg_flags);
1633 goto out;
1634 case DCB_CMD_GPERM_HWADDR:
1635 ret = dcbnl_getperm_hwaddr(netdev, tb, pid, nlh->nlmsg_seq,
1636 nlh->nlmsg_flags);
1637 goto out;
1638 case DCB_CMD_PGTX_GCFG:
1639 ret = dcbnl_pgtx_getcfg(netdev, tb, pid, nlh->nlmsg_seq,
1640 nlh->nlmsg_flags);
1641 goto out;
1642 case DCB_CMD_PGRX_GCFG:
1643 ret = dcbnl_pgrx_getcfg(netdev, tb, pid, nlh->nlmsg_seq,
1644 nlh->nlmsg_flags);
1645 goto out;
Alexander Duyck859ee3c2008-11-20 21:10:23 -08001646 case DCB_CMD_BCN_GCFG:
1647 ret = dcbnl_bcn_getcfg(netdev, tb, pid, nlh->nlmsg_seq,
1648 nlh->nlmsg_flags);
1649 goto out;
Alexander Duyck2f90b862008-11-20 20:52:10 -08001650 case DCB_CMD_SSTATE:
1651 ret = dcbnl_setstate(netdev, tb, pid, nlh->nlmsg_seq,
1652 nlh->nlmsg_flags);
1653 goto out;
1654 case DCB_CMD_PFC_SCFG:
1655 ret = dcbnl_setpfccfg(netdev, tb, pid, nlh->nlmsg_seq,
1656 nlh->nlmsg_flags);
1657 goto out;
1658
1659 case DCB_CMD_SET_ALL:
1660 ret = dcbnl_setall(netdev, tb, pid, nlh->nlmsg_seq,
1661 nlh->nlmsg_flags);
1662 goto out;
1663 case DCB_CMD_PGTX_SCFG:
1664 ret = dcbnl_pgtx_setcfg(netdev, tb, pid, nlh->nlmsg_seq,
1665 nlh->nlmsg_flags);
1666 goto out;
1667 case DCB_CMD_PGRX_SCFG:
1668 ret = dcbnl_pgrx_setcfg(netdev, tb, pid, nlh->nlmsg_seq,
1669 nlh->nlmsg_flags);
1670 goto out;
Alexander Duyck46132182008-11-20 21:05:08 -08001671 case DCB_CMD_GCAP:
1672 ret = dcbnl_getcap(netdev, tb, pid, nlh->nlmsg_seq,
1673 nlh->nlmsg_flags);
1674 goto out;
Alexander Duyck33dbabc2008-11-20 21:08:19 -08001675 case DCB_CMD_GNUMTCS:
1676 ret = dcbnl_getnumtcs(netdev, tb, pid, nlh->nlmsg_seq,
1677 nlh->nlmsg_flags);
1678 goto out;
1679 case DCB_CMD_SNUMTCS:
1680 ret = dcbnl_setnumtcs(netdev, tb, pid, nlh->nlmsg_seq,
1681 nlh->nlmsg_flags);
1682 goto out;
Alexander Duyck0eb3aa92008-11-20 21:09:23 -08001683 case DCB_CMD_PFC_GSTATE:
1684 ret = dcbnl_getpfcstate(netdev, tb, pid, nlh->nlmsg_seq,
1685 nlh->nlmsg_flags);
1686 goto out;
1687 case DCB_CMD_PFC_SSTATE:
1688 ret = dcbnl_setpfcstate(netdev, tb, pid, nlh->nlmsg_seq,
1689 nlh->nlmsg_flags);
1690 goto out;
Alexander Duyck859ee3c2008-11-20 21:10:23 -08001691 case DCB_CMD_BCN_SCFG:
1692 ret = dcbnl_bcn_setcfg(netdev, tb, pid, nlh->nlmsg_seq,
1693 nlh->nlmsg_flags);
1694 goto out;
Yi Zou57949682009-08-31 12:33:40 +00001695 case DCB_CMD_GAPP:
1696 ret = dcbnl_getapp(netdev, tb, pid, nlh->nlmsg_seq,
1697 nlh->nlmsg_flags);
1698 goto out;
1699 case DCB_CMD_SAPP:
1700 ret = dcbnl_setapp(netdev, tb, pid, nlh->nlmsg_seq,
1701 nlh->nlmsg_flags);
1702 goto out;
John Fastabend3e290272010-12-30 09:25:46 +00001703 case DCB_CMD_IEEE_SET:
1704 ret = dcbnl_ieee_set(netdev, tb, pid, nlh->nlmsg_seq,
1705 nlh->nlmsg_flags);
1706 goto out;
1707 case DCB_CMD_IEEE_GET:
1708 ret = dcbnl_ieee_get(netdev, tb, pid, nlh->nlmsg_seq,
1709 nlh->nlmsg_flags);
1710 goto out;
Shmulik Ravid6241b622010-12-30 06:26:48 +00001711 case DCB_CMD_GDCBX:
1712 ret = dcbnl_getdcbx(netdev, tb, pid, nlh->nlmsg_seq,
1713 nlh->nlmsg_flags);
1714 goto out;
1715 case DCB_CMD_SDCBX:
1716 ret = dcbnl_setdcbx(netdev, tb, pid, nlh->nlmsg_seq,
1717 nlh->nlmsg_flags);
1718 goto out;
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001719 case DCB_CMD_GFEATCFG:
1720 ret = dcbnl_getfeatcfg(netdev, tb, pid, nlh->nlmsg_seq,
1721 nlh->nlmsg_flags);
1722 goto out;
1723 case DCB_CMD_SFEATCFG:
1724 ret = dcbnl_setfeatcfg(netdev, tb, pid, nlh->nlmsg_seq,
1725 nlh->nlmsg_flags);
1726 goto out;
Shmulik Raviddc6ed1d2011-02-27 05:04:38 +00001727 case DCB_CMD_CEE_GET:
1728 ret = dcbnl_cee_get(netdev, tb, pid, nlh->nlmsg_seq,
1729 nlh->nlmsg_flags);
1730 goto out;
Alexander Duyck2f90b862008-11-20 20:52:10 -08001731 default:
1732 goto errout;
1733 }
1734errout:
1735 ret = -EINVAL;
1736out:
1737 dev_put(netdev);
1738 return ret;
1739}
1740
John Fastabend9ab933a2010-12-30 09:26:31 +00001741/**
1742 * dcb_getapp - retrieve the DCBX application user priority
1743 *
1744 * On success returns a non-zero 802.1p user priority bitmap
1745 * otherwise returns 0 as the invalid user priority bitmap to
1746 * indicate an error.
1747 */
1748u8 dcb_getapp(struct net_device *dev, struct dcb_app *app)
1749{
1750 struct dcb_app_type *itr;
1751 u8 prio = 0;
1752
1753 spin_lock(&dcb_lock);
1754 list_for_each_entry(itr, &dcb_app_list, list) {
1755 if (itr->app.selector == app->selector &&
1756 itr->app.protocol == app->protocol &&
1757 (strncmp(itr->name, dev->name, IFNAMSIZ) == 0)) {
1758 prio = itr->app.priority;
1759 break;
1760 }
1761 }
1762 spin_unlock(&dcb_lock);
1763
1764 return prio;
1765}
1766EXPORT_SYMBOL(dcb_getapp);
1767
1768/**
1769 * ixgbe_dcbnl_setapp - add dcb application data to app list
1770 *
1771 * Priority 0 is the default priority this removes applications
1772 * from the app list if the priority is set to zero.
1773 */
1774u8 dcb_setapp(struct net_device *dev, struct dcb_app *new)
1775{
1776 struct dcb_app_type *itr;
John Fastabend7ec79272011-01-31 12:00:59 +00001777 struct dcb_app_type event;
1778
1779 memcpy(&event.name, dev->name, sizeof(event.name));
1780 memcpy(&event.app, new, sizeof(event.app));
John Fastabend9ab933a2010-12-30 09:26:31 +00001781
1782 spin_lock(&dcb_lock);
1783 /* Search for existing match and replace */
1784 list_for_each_entry(itr, &dcb_app_list, list) {
1785 if (itr->app.selector == new->selector &&
1786 itr->app.protocol == new->protocol &&
1787 (strncmp(itr->name, dev->name, IFNAMSIZ) == 0)) {
1788 if (new->priority)
1789 itr->app.priority = new->priority;
1790 else {
1791 list_del(&itr->list);
1792 kfree(itr);
1793 }
1794 goto out;
1795 }
1796 }
1797 /* App type does not exist add new application type */
1798 if (new->priority) {
1799 struct dcb_app_type *entry;
1800 entry = kmalloc(sizeof(struct dcb_app_type), GFP_ATOMIC);
1801 if (!entry) {
1802 spin_unlock(&dcb_lock);
1803 return -ENOMEM;
1804 }
1805
1806 memcpy(&entry->app, new, sizeof(*new));
1807 strncpy(entry->name, dev->name, IFNAMSIZ);
1808 list_add(&entry->list, &dcb_app_list);
1809 }
1810out:
1811 spin_unlock(&dcb_lock);
John Fastabend7ec79272011-01-31 12:00:59 +00001812 call_dcbevent_notifiers(DCB_APP_EVENT, &event);
John Fastabend9ab933a2010-12-30 09:26:31 +00001813 return 0;
1814}
1815EXPORT_SYMBOL(dcb_setapp);
1816
Shmulik Ravid7c14c3f2010-12-30 06:27:10 +00001817static void dcb_flushapp(void)
John Fastabend9ab933a2010-12-30 09:26:31 +00001818{
1819 struct dcb_app_type *app;
Dan Carpenter2a8fe002011-01-04 21:03:44 +00001820 struct dcb_app_type *tmp;
John Fastabend9ab933a2010-12-30 09:26:31 +00001821
1822 spin_lock(&dcb_lock);
Dan Carpenter2a8fe002011-01-04 21:03:44 +00001823 list_for_each_entry_safe(app, tmp, &dcb_app_list, list) {
John Fastabend9ab933a2010-12-30 09:26:31 +00001824 list_del(&app->list);
1825 kfree(app);
1826 }
1827 spin_unlock(&dcb_lock);
1828}
1829
Alexander Duyck2f90b862008-11-20 20:52:10 -08001830static int __init dcbnl_init(void)
1831{
John Fastabend9ab933a2010-12-30 09:26:31 +00001832 INIT_LIST_HEAD(&dcb_app_list);
1833
Greg Rosec7ac8672011-06-10 01:27:09 +00001834 rtnl_register(PF_UNSPEC, RTM_GETDCB, dcb_doit, NULL, NULL);
1835 rtnl_register(PF_UNSPEC, RTM_SETDCB, dcb_doit, NULL, NULL);
Alexander Duyck2f90b862008-11-20 20:52:10 -08001836
1837 return 0;
1838}
1839module_init(dcbnl_init);
1840
1841static void __exit dcbnl_exit(void)
1842{
1843 rtnl_unregister(PF_UNSPEC, RTM_GETDCB);
1844 rtnl_unregister(PF_UNSPEC, RTM_SETDCB);
John Fastabend9ab933a2010-12-30 09:26:31 +00001845 dcb_flushapp();
Alexander Duyck2f90b862008-11-20 20:52:10 -08001846}
1847module_exit(dcbnl_exit);