blob: 93ea80196f0ec383cca46d28bf8c4c96d0310b25 [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
Jeff Kirsherc057b192013-12-06 09:13:44 -080014 * this program; if not, see <http://www.gnu.org/licenses/>.
Alexander Duyck2f90b862008-11-20 20:52:10 -080015 *
16 * Author: Lucy Liu <lucy.liu@intel.com>
17 */
18
19#include <linux/netdevice.h>
20#include <linux/netlink.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090021#include <linux/slab.h>
Alexander Duyck2f90b862008-11-20 20:52:10 -080022#include <net/netlink.h>
23#include <net/rtnetlink.h>
24#include <linux/dcbnl.h>
John Fastabend96b99682010-12-30 09:26:37 +000025#include <net/dcbevent.h>
Alexander Duyck2f90b862008-11-20 20:52:10 -080026#include <linux/rtnetlink.h>
Paul Gortmaker3a9a2312011-05-27 09:12:25 -040027#include <linux/module.h>
Alexander Duyck2f90b862008-11-20 20:52:10 -080028#include <net/sock.h>
29
Ben Hutchingsae86b9e2012-07-10 10:55:35 +000030/* Data Center Bridging (DCB) is a collection of Ethernet enhancements
Alexander Duyck2f90b862008-11-20 20:52:10 -080031 * intended to allow network traffic with differing requirements
32 * (highly reliable, no drops vs. best effort vs. low latency) to operate
33 * and co-exist on Ethernet. Current DCB features are:
34 *
35 * Enhanced Transmission Selection (aka Priority Grouping [PG]) - provides a
36 * framework for assigning bandwidth guarantees to traffic classes.
37 *
38 * Priority-based Flow Control (PFC) - provides a flow control mechanism which
39 * can work independently for each 802.1p priority.
40 *
41 * Congestion Notification - provides a mechanism for end-to-end congestion
42 * control for protocols which do not have built-in congestion management.
43 *
44 * More information about the emerging standards for these Ethernet features
45 * can be found at: http://www.ieee802.org/1/pages/dcbridges.html
46 *
47 * This file implements an rtnetlink interface to allow configuration of DCB
48 * features for capable devices.
49 */
50
51MODULE_AUTHOR("Lucy Liu, <lucy.liu@intel.com>");
Jeff Kirsher7a6b6f52008-11-25 01:02:08 -080052MODULE_DESCRIPTION("Data Center Bridging netlink interface");
Alexander Duyck2f90b862008-11-20 20:52:10 -080053MODULE_LICENSE("GPL");
54
55/**************** DCB attribute policies *************************************/
56
57/* DCB netlink attributes policy */
Alexey Dobriyanb54452b2010-02-18 08:14:31 +000058static const struct nla_policy dcbnl_rtnl_policy[DCB_ATTR_MAX + 1] = {
Alexander Duyck859ee3c2008-11-20 21:10:23 -080059 [DCB_ATTR_IFNAME] = {.type = NLA_NUL_STRING, .len = IFNAMSIZ - 1},
60 [DCB_ATTR_STATE] = {.type = NLA_U8},
61 [DCB_ATTR_PFC_CFG] = {.type = NLA_NESTED},
62 [DCB_ATTR_PG_CFG] = {.type = NLA_NESTED},
63 [DCB_ATTR_SET_ALL] = {.type = NLA_U8},
Alexander Duyck2f90b862008-11-20 20:52:10 -080064 [DCB_ATTR_PERM_HWADDR] = {.type = NLA_FLAG},
Alexander Duyck859ee3c2008-11-20 21:10:23 -080065 [DCB_ATTR_CAP] = {.type = NLA_NESTED},
66 [DCB_ATTR_PFC_STATE] = {.type = NLA_U8},
67 [DCB_ATTR_BCN] = {.type = NLA_NESTED},
Yi Zou6fa382a2009-08-31 12:33:20 +000068 [DCB_ATTR_APP] = {.type = NLA_NESTED},
John Fastabend3e290272010-12-30 09:25:46 +000069 [DCB_ATTR_IEEE] = {.type = NLA_NESTED},
Shmulik Ravid6241b622010-12-30 06:26:48 +000070 [DCB_ATTR_DCBX] = {.type = NLA_U8},
Shmulik Ravidea45fe42010-12-30 06:26:55 +000071 [DCB_ATTR_FEATCFG] = {.type = NLA_NESTED},
Alexander Duyck2f90b862008-11-20 20:52:10 -080072};
73
74/* DCB priority flow control to User Priority nested attributes */
Alexey Dobriyanb54452b2010-02-18 08:14:31 +000075static const struct nla_policy dcbnl_pfc_up_nest[DCB_PFC_UP_ATTR_MAX + 1] = {
Alexander Duyck2f90b862008-11-20 20:52:10 -080076 [DCB_PFC_UP_ATTR_0] = {.type = NLA_U8},
77 [DCB_PFC_UP_ATTR_1] = {.type = NLA_U8},
78 [DCB_PFC_UP_ATTR_2] = {.type = NLA_U8},
79 [DCB_PFC_UP_ATTR_3] = {.type = NLA_U8},
80 [DCB_PFC_UP_ATTR_4] = {.type = NLA_U8},
81 [DCB_PFC_UP_ATTR_5] = {.type = NLA_U8},
82 [DCB_PFC_UP_ATTR_6] = {.type = NLA_U8},
83 [DCB_PFC_UP_ATTR_7] = {.type = NLA_U8},
84 [DCB_PFC_UP_ATTR_ALL] = {.type = NLA_FLAG},
85};
86
87/* DCB priority grouping nested attributes */
Alexey Dobriyanb54452b2010-02-18 08:14:31 +000088static const struct nla_policy dcbnl_pg_nest[DCB_PG_ATTR_MAX + 1] = {
Alexander Duyck2f90b862008-11-20 20:52:10 -080089 [DCB_PG_ATTR_TC_0] = {.type = NLA_NESTED},
90 [DCB_PG_ATTR_TC_1] = {.type = NLA_NESTED},
91 [DCB_PG_ATTR_TC_2] = {.type = NLA_NESTED},
92 [DCB_PG_ATTR_TC_3] = {.type = NLA_NESTED},
93 [DCB_PG_ATTR_TC_4] = {.type = NLA_NESTED},
94 [DCB_PG_ATTR_TC_5] = {.type = NLA_NESTED},
95 [DCB_PG_ATTR_TC_6] = {.type = NLA_NESTED},
96 [DCB_PG_ATTR_TC_7] = {.type = NLA_NESTED},
97 [DCB_PG_ATTR_TC_ALL] = {.type = NLA_NESTED},
98 [DCB_PG_ATTR_BW_ID_0] = {.type = NLA_U8},
99 [DCB_PG_ATTR_BW_ID_1] = {.type = NLA_U8},
100 [DCB_PG_ATTR_BW_ID_2] = {.type = NLA_U8},
101 [DCB_PG_ATTR_BW_ID_3] = {.type = NLA_U8},
102 [DCB_PG_ATTR_BW_ID_4] = {.type = NLA_U8},
103 [DCB_PG_ATTR_BW_ID_5] = {.type = NLA_U8},
104 [DCB_PG_ATTR_BW_ID_6] = {.type = NLA_U8},
105 [DCB_PG_ATTR_BW_ID_7] = {.type = NLA_U8},
106 [DCB_PG_ATTR_BW_ID_ALL] = {.type = NLA_FLAG},
107};
108
109/* DCB traffic class nested attributes. */
Alexey Dobriyanb54452b2010-02-18 08:14:31 +0000110static const struct nla_policy dcbnl_tc_param_nest[DCB_TC_ATTR_PARAM_MAX + 1] = {
Alexander Duyck2f90b862008-11-20 20:52:10 -0800111 [DCB_TC_ATTR_PARAM_PGID] = {.type = NLA_U8},
112 [DCB_TC_ATTR_PARAM_UP_MAPPING] = {.type = NLA_U8},
113 [DCB_TC_ATTR_PARAM_STRICT_PRIO] = {.type = NLA_U8},
114 [DCB_TC_ATTR_PARAM_BW_PCT] = {.type = NLA_U8},
115 [DCB_TC_ATTR_PARAM_ALL] = {.type = NLA_FLAG},
116};
117
Alexander Duyck46132182008-11-20 21:05:08 -0800118/* DCB capabilities nested attributes. */
Alexey Dobriyanb54452b2010-02-18 08:14:31 +0000119static const struct nla_policy dcbnl_cap_nest[DCB_CAP_ATTR_MAX + 1] = {
Alexander Duyck46132182008-11-20 21:05:08 -0800120 [DCB_CAP_ATTR_ALL] = {.type = NLA_FLAG},
121 [DCB_CAP_ATTR_PG] = {.type = NLA_U8},
122 [DCB_CAP_ATTR_PFC] = {.type = NLA_U8},
123 [DCB_CAP_ATTR_UP2TC] = {.type = NLA_U8},
124 [DCB_CAP_ATTR_PG_TCS] = {.type = NLA_U8},
125 [DCB_CAP_ATTR_PFC_TCS] = {.type = NLA_U8},
126 [DCB_CAP_ATTR_GSP] = {.type = NLA_U8},
127 [DCB_CAP_ATTR_BCN] = {.type = NLA_U8},
Shmulik Ravid6241b622010-12-30 06:26:48 +0000128 [DCB_CAP_ATTR_DCBX] = {.type = NLA_U8},
Alexander Duyck46132182008-11-20 21:05:08 -0800129};
Alexander Duyck2f90b862008-11-20 20:52:10 -0800130
Alexander Duyck33dbabc2008-11-20 21:08:19 -0800131/* DCB capabilities nested attributes. */
Alexey Dobriyanb54452b2010-02-18 08:14:31 +0000132static const struct nla_policy dcbnl_numtcs_nest[DCB_NUMTCS_ATTR_MAX + 1] = {
Alexander Duyck33dbabc2008-11-20 21:08:19 -0800133 [DCB_NUMTCS_ATTR_ALL] = {.type = NLA_FLAG},
134 [DCB_NUMTCS_ATTR_PG] = {.type = NLA_U8},
135 [DCB_NUMTCS_ATTR_PFC] = {.type = NLA_U8},
136};
137
Alexander Duyck859ee3c2008-11-20 21:10:23 -0800138/* DCB BCN nested attributes. */
Alexey Dobriyanb54452b2010-02-18 08:14:31 +0000139static const struct nla_policy dcbnl_bcn_nest[DCB_BCN_ATTR_MAX + 1] = {
Alexander Duyck859ee3c2008-11-20 21:10:23 -0800140 [DCB_BCN_ATTR_RP_0] = {.type = NLA_U8},
141 [DCB_BCN_ATTR_RP_1] = {.type = NLA_U8},
142 [DCB_BCN_ATTR_RP_2] = {.type = NLA_U8},
143 [DCB_BCN_ATTR_RP_3] = {.type = NLA_U8},
144 [DCB_BCN_ATTR_RP_4] = {.type = NLA_U8},
145 [DCB_BCN_ATTR_RP_5] = {.type = NLA_U8},
146 [DCB_BCN_ATTR_RP_6] = {.type = NLA_U8},
147 [DCB_BCN_ATTR_RP_7] = {.type = NLA_U8},
148 [DCB_BCN_ATTR_RP_ALL] = {.type = NLA_FLAG},
Don Skidmoref4314e82008-12-21 20:10:29 -0800149 [DCB_BCN_ATTR_BCNA_0] = {.type = NLA_U32},
150 [DCB_BCN_ATTR_BCNA_1] = {.type = NLA_U32},
Alexander Duyck859ee3c2008-11-20 21:10:23 -0800151 [DCB_BCN_ATTR_ALPHA] = {.type = NLA_U32},
152 [DCB_BCN_ATTR_BETA] = {.type = NLA_U32},
153 [DCB_BCN_ATTR_GD] = {.type = NLA_U32},
154 [DCB_BCN_ATTR_GI] = {.type = NLA_U32},
155 [DCB_BCN_ATTR_TMAX] = {.type = NLA_U32},
156 [DCB_BCN_ATTR_TD] = {.type = NLA_U32},
157 [DCB_BCN_ATTR_RMIN] = {.type = NLA_U32},
158 [DCB_BCN_ATTR_W] = {.type = NLA_U32},
159 [DCB_BCN_ATTR_RD] = {.type = NLA_U32},
160 [DCB_BCN_ATTR_RU] = {.type = NLA_U32},
161 [DCB_BCN_ATTR_WRTT] = {.type = NLA_U32},
162 [DCB_BCN_ATTR_RI] = {.type = NLA_U32},
163 [DCB_BCN_ATTR_C] = {.type = NLA_U32},
164 [DCB_BCN_ATTR_ALL] = {.type = NLA_FLAG},
165};
166
Yi Zou6fa382a2009-08-31 12:33:20 +0000167/* DCB APP nested attributes. */
Alexey Dobriyanb54452b2010-02-18 08:14:31 +0000168static const struct nla_policy dcbnl_app_nest[DCB_APP_ATTR_MAX + 1] = {
Yi Zou6fa382a2009-08-31 12:33:20 +0000169 [DCB_APP_ATTR_IDTYPE] = {.type = NLA_U8},
170 [DCB_APP_ATTR_ID] = {.type = NLA_U16},
171 [DCB_APP_ATTR_PRIORITY] = {.type = NLA_U8},
172};
173
John Fastabend3e290272010-12-30 09:25:46 +0000174/* IEEE 802.1Qaz nested attributes. */
175static const struct nla_policy dcbnl_ieee_policy[DCB_ATTR_IEEE_MAX + 1] = {
176 [DCB_ATTR_IEEE_ETS] = {.len = sizeof(struct ieee_ets)},
177 [DCB_ATTR_IEEE_PFC] = {.len = sizeof(struct ieee_pfc)},
178 [DCB_ATTR_IEEE_APP_TABLE] = {.type = NLA_NESTED},
Amir Vadai08f10af2012-04-04 21:33:30 +0000179 [DCB_ATTR_IEEE_MAXRATE] = {.len = sizeof(struct ieee_maxrate)},
John Fastabend3e290272010-12-30 09:25:46 +0000180};
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
Thomas Graf33a03aa2012-06-13 02:54:54 +0000197static struct sk_buff *dcbnl_newmsg(int type, u8 cmd, u32 port, u32 seq,
198 u32 flags, struct nlmsghdr **nlhp)
199{
200 struct sk_buff *skb;
201 struct dcbmsg *dcb;
202 struct nlmsghdr *nlh;
203
204 skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
205 if (!skb)
206 return NULL;
207
208 nlh = nlmsg_put(skb, port, seq, type, sizeof(*dcb), flags);
Thomas Grafb3908e22012-06-13 22:40:15 +0000209 BUG_ON(!nlh);
Thomas Graf33a03aa2012-06-13 02:54:54 +0000210
211 dcb = nlmsg_data(nlh);
212 dcb->dcb_family = AF_UNSPEC;
213 dcb->cmd = cmd;
214 dcb->dcb_pad = 0;
215
216 if (nlhp)
217 *nlhp = nlh;
218
219 return skb;
220}
221
Thomas Graf7be99412012-06-13 02:54:55 +0000222static int dcbnl_getstate(struct net_device *netdev, struct nlmsghdr *nlh,
223 u32 seq, struct nlattr **tb, struct sk_buff *skb)
Alexander Duyck2f90b862008-11-20 20:52:10 -0800224{
Alexander Duyck2f90b862008-11-20 20:52:10 -0800225 /* if (!tb[DCB_ATTR_STATE] || !netdev->dcbnl_ops->getstate) */
226 if (!netdev->dcbnl_ops->getstate)
Thomas Graf3d1f4862012-06-13 02:54:58 +0000227 return -EOPNOTSUPP;
Alexander Duyck2f90b862008-11-20 20:52:10 -0800228
Thomas Graf7be99412012-06-13 02:54:55 +0000229 return nla_put_u8(skb, DCB_ATTR_STATE,
230 netdev->dcbnl_ops->getstate(netdev));
Alexander Duyck2f90b862008-11-20 20:52:10 -0800231}
232
Thomas Graf7be99412012-06-13 02:54:55 +0000233static int dcbnl_getpfccfg(struct net_device *netdev, struct nlmsghdr *nlh,
234 u32 seq, struct nlattr **tb, struct sk_buff *skb)
Alexander Duyck2f90b862008-11-20 20:52:10 -0800235{
Alexander Duyck2f90b862008-11-20 20:52:10 -0800236 struct nlattr *data[DCB_PFC_UP_ATTR_MAX + 1], *nest;
237 u8 value;
Thomas Graf3d1f4862012-06-13 02:54:58 +0000238 int ret;
Alexander Duyck2f90b862008-11-20 20:52:10 -0800239 int i;
240 int getall = 0;
241
Thomas Graf3d1f4862012-06-13 02:54:58 +0000242 if (!tb[DCB_ATTR_PFC_CFG])
243 return -EINVAL;
244
245 if (!netdev->dcbnl_ops->getpfccfg)
246 return -EOPNOTSUPP;
Alexander Duyck2f90b862008-11-20 20:52:10 -0800247
248 ret = nla_parse_nested(data, DCB_PFC_UP_ATTR_MAX,
249 tb[DCB_ATTR_PFC_CFG],
250 dcbnl_pfc_up_nest);
251 if (ret)
Thomas Graf3d1f4862012-06-13 02:54:58 +0000252 return ret;
Alexander Duyck2f90b862008-11-20 20:52:10 -0800253
Thomas Graf7be99412012-06-13 02:54:55 +0000254 nest = nla_nest_start(skb, DCB_ATTR_PFC_CFG);
Alexander Duyck2f90b862008-11-20 20:52:10 -0800255 if (!nest)
Thomas Graf3d1f4862012-06-13 02:54:58 +0000256 return -EMSGSIZE;
Alexander Duyck2f90b862008-11-20 20:52:10 -0800257
258 if (data[DCB_PFC_UP_ATTR_ALL])
259 getall = 1;
260
261 for (i = DCB_PFC_UP_ATTR_0; i <= DCB_PFC_UP_ATTR_7; i++) {
262 if (!getall && !data[i])
263 continue;
264
265 netdev->dcbnl_ops->getpfccfg(netdev, i - DCB_PFC_UP_ATTR_0,
266 &value);
Thomas Graf7be99412012-06-13 02:54:55 +0000267 ret = nla_put_u8(skb, i, value);
Alexander Duyck2f90b862008-11-20 20:52:10 -0800268 if (ret) {
Thomas Graf7be99412012-06-13 02:54:55 +0000269 nla_nest_cancel(skb, nest);
Thomas Graf3d1f4862012-06-13 02:54:58 +0000270 return ret;
Alexander Duyck2f90b862008-11-20 20:52:10 -0800271 }
272 }
Thomas Graf7be99412012-06-13 02:54:55 +0000273 nla_nest_end(skb, nest);
Alexander Duyck2f90b862008-11-20 20:52:10 -0800274
275 return 0;
Alexander Duyck2f90b862008-11-20 20:52:10 -0800276}
277
Thomas Graf7be99412012-06-13 02:54:55 +0000278static int dcbnl_getperm_hwaddr(struct net_device *netdev, struct nlmsghdr *nlh,
279 u32 seq, struct nlattr **tb, struct sk_buff *skb)
Alexander Duyck2f90b862008-11-20 20:52:10 -0800280{
Alexander Duyck2f90b862008-11-20 20:52:10 -0800281 u8 perm_addr[MAX_ADDR_LEN];
Alexander Duyck2f90b862008-11-20 20:52:10 -0800282
283 if (!netdev->dcbnl_ops->getpermhwaddr)
Thomas Graf3d1f4862012-06-13 02:54:58 +0000284 return -EOPNOTSUPP;
Alexander Duyck2f90b862008-11-20 20:52:10 -0800285
Mathias Krause29cd8ae2013-03-09 05:52:21 +0000286 memset(perm_addr, 0, sizeof(perm_addr));
Alexander Duyck2f90b862008-11-20 20:52:10 -0800287 netdev->dcbnl_ops->getpermhwaddr(netdev, perm_addr);
288
Thomas Graf7be99412012-06-13 02:54:55 +0000289 return nla_put(skb, DCB_ATTR_PERM_HWADDR, sizeof(perm_addr), perm_addr);
Alexander Duyck2f90b862008-11-20 20:52:10 -0800290}
291
Thomas Graf7be99412012-06-13 02:54:55 +0000292static int dcbnl_getcap(struct net_device *netdev, struct nlmsghdr *nlh,
293 u32 seq, struct nlattr **tb, struct sk_buff *skb)
Alexander Duyck46132182008-11-20 21:05:08 -0800294{
Alexander Duyck46132182008-11-20 21:05:08 -0800295 struct nlattr *data[DCB_CAP_ATTR_MAX + 1], *nest;
296 u8 value;
Thomas Graf3d1f4862012-06-13 02:54:58 +0000297 int ret;
Alexander Duyck46132182008-11-20 21:05:08 -0800298 int i;
299 int getall = 0;
300
Thomas Graf3d1f4862012-06-13 02:54:58 +0000301 if (!tb[DCB_ATTR_CAP])
302 return -EINVAL;
303
304 if (!netdev->dcbnl_ops->getcap)
305 return -EOPNOTSUPP;
Alexander Duyck46132182008-11-20 21:05:08 -0800306
307 ret = nla_parse_nested(data, DCB_CAP_ATTR_MAX, tb[DCB_ATTR_CAP],
308 dcbnl_cap_nest);
309 if (ret)
Thomas Graf3d1f4862012-06-13 02:54:58 +0000310 return ret;
Alexander Duyck46132182008-11-20 21:05:08 -0800311
Thomas Graf7be99412012-06-13 02:54:55 +0000312 nest = nla_nest_start(skb, DCB_ATTR_CAP);
Alexander Duyck46132182008-11-20 21:05:08 -0800313 if (!nest)
Thomas Graf3d1f4862012-06-13 02:54:58 +0000314 return -EMSGSIZE;
Alexander Duyck46132182008-11-20 21:05:08 -0800315
316 if (data[DCB_CAP_ATTR_ALL])
317 getall = 1;
318
319 for (i = DCB_CAP_ATTR_ALL+1; i <= DCB_CAP_ATTR_MAX; i++) {
320 if (!getall && !data[i])
321 continue;
322
323 if (!netdev->dcbnl_ops->getcap(netdev, i, &value)) {
Thomas Graf7be99412012-06-13 02:54:55 +0000324 ret = nla_put_u8(skb, i, value);
Alexander Duyck46132182008-11-20 21:05:08 -0800325 if (ret) {
Thomas Graf7be99412012-06-13 02:54:55 +0000326 nla_nest_cancel(skb, nest);
Thomas Graf3d1f4862012-06-13 02:54:58 +0000327 return ret;
Alexander Duyck46132182008-11-20 21:05:08 -0800328 }
329 }
330 }
Thomas Graf7be99412012-06-13 02:54:55 +0000331 nla_nest_end(skb, nest);
Alexander Duyck46132182008-11-20 21:05:08 -0800332
333 return 0;
Alexander Duyck46132182008-11-20 21:05:08 -0800334}
335
Thomas Graf7be99412012-06-13 02:54:55 +0000336static int dcbnl_getnumtcs(struct net_device *netdev, struct nlmsghdr *nlh,
337 u32 seq, struct nlattr **tb, struct sk_buff *skb)
Alexander Duyck33dbabc2008-11-20 21:08:19 -0800338{
Alexander Duyck33dbabc2008-11-20 21:08:19 -0800339 struct nlattr *data[DCB_NUMTCS_ATTR_MAX + 1], *nest;
340 u8 value;
Thomas Graf3d1f4862012-06-13 02:54:58 +0000341 int ret;
Alexander Duyck33dbabc2008-11-20 21:08:19 -0800342 int i;
343 int getall = 0;
344
Thomas Graf3d1f4862012-06-13 02:54:58 +0000345 if (!tb[DCB_ATTR_NUMTCS])
346 return -EINVAL;
347
348 if (!netdev->dcbnl_ops->getnumtcs)
349 return -EOPNOTSUPP;
Alexander Duyck33dbabc2008-11-20 21:08:19 -0800350
351 ret = nla_parse_nested(data, DCB_NUMTCS_ATTR_MAX, tb[DCB_ATTR_NUMTCS],
352 dcbnl_numtcs_nest);
Thomas Graf3d1f4862012-06-13 02:54:58 +0000353 if (ret)
354 return ret;
Alexander Duyck33dbabc2008-11-20 21:08:19 -0800355
Thomas Graf7be99412012-06-13 02:54:55 +0000356 nest = nla_nest_start(skb, DCB_ATTR_NUMTCS);
Thomas Graf3d1f4862012-06-13 02:54:58 +0000357 if (!nest)
358 return -EMSGSIZE;
Alexander Duyck33dbabc2008-11-20 21:08:19 -0800359
360 if (data[DCB_NUMTCS_ATTR_ALL])
361 getall = 1;
362
363 for (i = DCB_NUMTCS_ATTR_ALL+1; i <= DCB_NUMTCS_ATTR_MAX; i++) {
364 if (!getall && !data[i])
365 continue;
366
367 ret = netdev->dcbnl_ops->getnumtcs(netdev, i, &value);
368 if (!ret) {
Thomas Graf7be99412012-06-13 02:54:55 +0000369 ret = nla_put_u8(skb, i, value);
Alexander Duyck33dbabc2008-11-20 21:08:19 -0800370 if (ret) {
Thomas Graf7be99412012-06-13 02:54:55 +0000371 nla_nest_cancel(skb, nest);
Thomas Graf3d1f4862012-06-13 02:54:58 +0000372 return ret;
Alexander Duyck33dbabc2008-11-20 21:08:19 -0800373 }
Thomas Graf3d1f4862012-06-13 02:54:58 +0000374 } else
375 return -EINVAL;
Alexander Duyck33dbabc2008-11-20 21:08:19 -0800376 }
Thomas Graf7be99412012-06-13 02:54:55 +0000377 nla_nest_end(skb, nest);
Alexander Duyck33dbabc2008-11-20 21:08:19 -0800378
379 return 0;
Alexander Duyck33dbabc2008-11-20 21:08:19 -0800380}
381
Thomas Graf7be99412012-06-13 02:54:55 +0000382static int dcbnl_setnumtcs(struct net_device *netdev, struct nlmsghdr *nlh,
383 u32 seq, struct nlattr **tb, struct sk_buff *skb)
Alexander Duyck33dbabc2008-11-20 21:08:19 -0800384{
385 struct nlattr *data[DCB_NUMTCS_ATTR_MAX + 1];
Thomas Graf3d1f4862012-06-13 02:54:58 +0000386 int ret;
Alexander Duyck33dbabc2008-11-20 21:08:19 -0800387 u8 value;
388 int i;
389
Thomas Graf3d1f4862012-06-13 02:54:58 +0000390 if (!tb[DCB_ATTR_NUMTCS])
391 return -EINVAL;
392
393 if (!netdev->dcbnl_ops->setnumtcs)
394 return -EOPNOTSUPP;
Alexander Duyck33dbabc2008-11-20 21:08:19 -0800395
396 ret = nla_parse_nested(data, DCB_NUMTCS_ATTR_MAX, tb[DCB_ATTR_NUMTCS],
397 dcbnl_numtcs_nest);
Thomas Graf7be99412012-06-13 02:54:55 +0000398 if (ret)
Thomas Graf3d1f4862012-06-13 02:54:58 +0000399 return ret;
Alexander Duyck33dbabc2008-11-20 21:08:19 -0800400
401 for (i = DCB_NUMTCS_ATTR_ALL+1; i <= DCB_NUMTCS_ATTR_MAX; i++) {
402 if (data[i] == NULL)
403 continue;
404
405 value = nla_get_u8(data[i]);
406
407 ret = netdev->dcbnl_ops->setnumtcs(netdev, i, value);
Alexander Duyck33dbabc2008-11-20 21:08:19 -0800408 if (ret)
Thomas Graf7be99412012-06-13 02:54:55 +0000409 break;
Alexander Duyck33dbabc2008-11-20 21:08:19 -0800410 }
411
Thomas Graf7be99412012-06-13 02:54:55 +0000412 return nla_put_u8(skb, DCB_ATTR_NUMTCS, !!ret);
Alexander Duyck33dbabc2008-11-20 21:08:19 -0800413}
414
Thomas Graf7be99412012-06-13 02:54:55 +0000415static int dcbnl_getpfcstate(struct net_device *netdev, struct nlmsghdr *nlh,
416 u32 seq, struct nlattr **tb, struct sk_buff *skb)
Alexander Duyck0eb3aa92008-11-20 21:09:23 -0800417{
Alexander Duyck0eb3aa92008-11-20 21:09:23 -0800418 if (!netdev->dcbnl_ops->getpfcstate)
Thomas Graf3d1f4862012-06-13 02:54:58 +0000419 return -EOPNOTSUPP;
Alexander Duyck0eb3aa92008-11-20 21:09:23 -0800420
Thomas Graf7be99412012-06-13 02:54:55 +0000421 return nla_put_u8(skb, DCB_ATTR_PFC_STATE,
422 netdev->dcbnl_ops->getpfcstate(netdev));
Alexander Duyck0eb3aa92008-11-20 21:09:23 -0800423}
424
Thomas Graf7be99412012-06-13 02:54:55 +0000425static int dcbnl_setpfcstate(struct net_device *netdev, struct nlmsghdr *nlh,
426 u32 seq, struct nlattr **tb, struct sk_buff *skb)
Alexander Duyck0eb3aa92008-11-20 21:09:23 -0800427{
Alexander Duyck0eb3aa92008-11-20 21:09:23 -0800428 u8 value;
429
Thomas Graf3d1f4862012-06-13 02:54:58 +0000430 if (!tb[DCB_ATTR_PFC_STATE])
Thomas Graf7be99412012-06-13 02:54:55 +0000431 return -EINVAL;
Alexander Duyck0eb3aa92008-11-20 21:09:23 -0800432
Thomas Graf3d1f4862012-06-13 02:54:58 +0000433 if (!netdev->dcbnl_ops->setpfcstate)
434 return -EOPNOTSUPP;
435
Alexander Duyck0eb3aa92008-11-20 21:09:23 -0800436 value = nla_get_u8(tb[DCB_ATTR_PFC_STATE]);
437
438 netdev->dcbnl_ops->setpfcstate(netdev, value);
439
Thomas Graf7be99412012-06-13 02:54:55 +0000440 return nla_put_u8(skb, DCB_ATTR_PFC_STATE, 0);
Alexander Duyck0eb3aa92008-11-20 21:09:23 -0800441}
442
Thomas Graf7be99412012-06-13 02:54:55 +0000443static int dcbnl_getapp(struct net_device *netdev, struct nlmsghdr *nlh,
444 u32 seq, struct nlattr **tb, struct sk_buff *skb)
Yi Zou57949682009-08-31 12:33:40 +0000445{
Yi Zou57949682009-08-31 12:33:40 +0000446 struct nlattr *app_nest;
447 struct nlattr *app_tb[DCB_APP_ATTR_MAX + 1];
448 u16 id;
449 u8 up, idtype;
Thomas Graf3d1f4862012-06-13 02:54:58 +0000450 int ret;
Yi Zou57949682009-08-31 12:33:40 +0000451
John Fastabend3dce38a2011-01-21 16:35:18 +0000452 if (!tb[DCB_ATTR_APP])
Thomas Graf3d1f4862012-06-13 02:54:58 +0000453 return -EINVAL;
Yi Zou57949682009-08-31 12:33:40 +0000454
455 ret = nla_parse_nested(app_tb, DCB_APP_ATTR_MAX, tb[DCB_ATTR_APP],
456 dcbnl_app_nest);
457 if (ret)
Thomas Graf3d1f4862012-06-13 02:54:58 +0000458 return ret;
Yi Zou57949682009-08-31 12:33:40 +0000459
Yi Zou57949682009-08-31 12:33:40 +0000460 /* all must be non-null */
461 if ((!app_tb[DCB_APP_ATTR_IDTYPE]) ||
462 (!app_tb[DCB_APP_ATTR_ID]))
Thomas Graf3d1f4862012-06-13 02:54:58 +0000463 return -EINVAL;
Yi Zou57949682009-08-31 12:33:40 +0000464
465 /* either by eth type or by socket number */
466 idtype = nla_get_u8(app_tb[DCB_APP_ATTR_IDTYPE]);
467 if ((idtype != DCB_APP_IDTYPE_ETHTYPE) &&
468 (idtype != DCB_APP_IDTYPE_PORTNUM))
Thomas Graf3d1f4862012-06-13 02:54:58 +0000469 return -EINVAL;
Yi Zou57949682009-08-31 12:33:40 +0000470
471 id = nla_get_u16(app_tb[DCB_APP_ATTR_ID]);
John Fastabend3dce38a2011-01-21 16:35:18 +0000472
473 if (netdev->dcbnl_ops->getapp) {
Anish Bhattc2659472014-07-16 22:32:39 -0700474 ret = netdev->dcbnl_ops->getapp(netdev, idtype, id);
475 if (ret < 0)
476 return ret;
477 else
478 up = ret;
John Fastabend3dce38a2011-01-21 16:35:18 +0000479 } else {
480 struct dcb_app app = {
481 .selector = idtype,
482 .protocol = id,
483 };
484 up = dcb_getapp(netdev, &app);
485 }
Yi Zou57949682009-08-31 12:33:40 +0000486
Thomas Graf7be99412012-06-13 02:54:55 +0000487 app_nest = nla_nest_start(skb, DCB_ATTR_APP);
488 if (!app_nest)
Thomas Graf3d1f4862012-06-13 02:54:58 +0000489 return -EMSGSIZE;
Yi Zou57949682009-08-31 12:33:40 +0000490
Thomas Graf7be99412012-06-13 02:54:55 +0000491 ret = nla_put_u8(skb, DCB_APP_ATTR_IDTYPE, idtype);
Yi Zou57949682009-08-31 12:33:40 +0000492 if (ret)
493 goto out_cancel;
494
Thomas Graf7be99412012-06-13 02:54:55 +0000495 ret = nla_put_u16(skb, DCB_APP_ATTR_ID, id);
Yi Zou57949682009-08-31 12:33:40 +0000496 if (ret)
497 goto out_cancel;
498
Thomas Graf7be99412012-06-13 02:54:55 +0000499 ret = nla_put_u8(skb, DCB_APP_ATTR_PRIORITY, up);
Yi Zou57949682009-08-31 12:33:40 +0000500 if (ret)
501 goto out_cancel;
502
Thomas Graf7be99412012-06-13 02:54:55 +0000503 nla_nest_end(skb, app_nest);
Yi Zou57949682009-08-31 12:33:40 +0000504
Thomas Graf3d1f4862012-06-13 02:54:58 +0000505 return 0;
Yi Zou57949682009-08-31 12:33:40 +0000506
507out_cancel:
Thomas Graf7be99412012-06-13 02:54:55 +0000508 nla_nest_cancel(skb, app_nest);
Yi Zou57949682009-08-31 12:33:40 +0000509 return ret;
510}
511
Thomas Graf7be99412012-06-13 02:54:55 +0000512static int dcbnl_setapp(struct net_device *netdev, struct nlmsghdr *nlh,
513 u32 seq, struct nlattr **tb, struct sk_buff *skb)
Yi Zou57949682009-08-31 12:33:40 +0000514{
Thomas Graf3d1f4862012-06-13 02:54:58 +0000515 int ret;
Yi Zou57949682009-08-31 12:33:40 +0000516 u16 id;
517 u8 up, idtype;
518 struct nlattr *app_tb[DCB_APP_ATTR_MAX + 1];
519
John Fastabend9ab933a2010-12-30 09:26:31 +0000520 if (!tb[DCB_ATTR_APP])
Thomas Graf3d1f4862012-06-13 02:54:58 +0000521 return -EINVAL;
Yi Zou57949682009-08-31 12:33:40 +0000522
523 ret = nla_parse_nested(app_tb, DCB_APP_ATTR_MAX, tb[DCB_ATTR_APP],
524 dcbnl_app_nest);
525 if (ret)
Thomas Graf3d1f4862012-06-13 02:54:58 +0000526 return ret;
Yi Zou57949682009-08-31 12:33:40 +0000527
Yi Zou57949682009-08-31 12:33:40 +0000528 /* all must be non-null */
529 if ((!app_tb[DCB_APP_ATTR_IDTYPE]) ||
530 (!app_tb[DCB_APP_ATTR_ID]) ||
531 (!app_tb[DCB_APP_ATTR_PRIORITY]))
Thomas Graf3d1f4862012-06-13 02:54:58 +0000532 return -EINVAL;
Yi Zou57949682009-08-31 12:33:40 +0000533
534 /* either by eth type or by socket number */
535 idtype = nla_get_u8(app_tb[DCB_APP_ATTR_IDTYPE]);
536 if ((idtype != DCB_APP_IDTYPE_ETHTYPE) &&
537 (idtype != DCB_APP_IDTYPE_PORTNUM))
Thomas Graf3d1f4862012-06-13 02:54:58 +0000538 return -EINVAL;
Yi Zou57949682009-08-31 12:33:40 +0000539
540 id = nla_get_u16(app_tb[DCB_APP_ATTR_ID]);
541 up = nla_get_u8(app_tb[DCB_APP_ATTR_PRIORITY]);
542
John Fastabend9ab933a2010-12-30 09:26:31 +0000543 if (netdev->dcbnl_ops->setapp) {
Thomas Graf3d1f4862012-06-13 02:54:58 +0000544 ret = netdev->dcbnl_ops->setapp(netdev, idtype, id, up);
Anish Bhattc2659472014-07-16 22:32:39 -0700545 if (ret < 0)
546 return ret;
John Fastabend9ab933a2010-12-30 09:26:31 +0000547 } else {
548 struct dcb_app app;
549 app.selector = idtype;
550 app.protocol = id;
551 app.priority = up;
Thomas Graf3d1f4862012-06-13 02:54:58 +0000552 ret = dcb_setapp(netdev, &app);
John Fastabend9ab933a2010-12-30 09:26:31 +0000553 }
554
Thomas Graf7be99412012-06-13 02:54:55 +0000555 ret = nla_put_u8(skb, DCB_ATTR_APP, ret);
John Fastabend08157982012-04-20 09:49:23 +0000556 dcbnl_cee_notify(netdev, RTM_SETDCB, DCB_CMD_SAPP, seq, 0);
Thomas Graf3d1f4862012-06-13 02:54:58 +0000557
Yi Zou57949682009-08-31 12:33:40 +0000558 return ret;
559}
560
Thomas Graf7be99412012-06-13 02:54:55 +0000561static int __dcbnl_pg_getcfg(struct net_device *netdev, struct nlmsghdr *nlh,
562 struct nlattr **tb, struct sk_buff *skb, int dir)
Alexander Duyck2f90b862008-11-20 20:52:10 -0800563{
Alexander Duyck2f90b862008-11-20 20:52:10 -0800564 struct nlattr *pg_nest, *param_nest, *data;
565 struct nlattr *pg_tb[DCB_PG_ATTR_MAX + 1];
566 struct nlattr *param_tb[DCB_TC_ATTR_PARAM_MAX + 1];
567 u8 prio, pgid, tc_pct, up_map;
Thomas Graf3d1f4862012-06-13 02:54:58 +0000568 int ret;
Alexander Duyck2f90b862008-11-20 20:52:10 -0800569 int getall = 0;
570 int i;
571
Thomas Graf3d1f4862012-06-13 02:54:58 +0000572 if (!tb[DCB_ATTR_PG_CFG])
573 return -EINVAL;
574
575 if (!netdev->dcbnl_ops->getpgtccfgtx ||
Alexander Duyck2f90b862008-11-20 20:52:10 -0800576 !netdev->dcbnl_ops->getpgtccfgrx ||
577 !netdev->dcbnl_ops->getpgbwgcfgtx ||
578 !netdev->dcbnl_ops->getpgbwgcfgrx)
Thomas Graf3d1f4862012-06-13 02:54:58 +0000579 return -EOPNOTSUPP;
Alexander Duyck2f90b862008-11-20 20:52:10 -0800580
581 ret = nla_parse_nested(pg_tb, DCB_PG_ATTR_MAX,
582 tb[DCB_ATTR_PG_CFG], dcbnl_pg_nest);
Alexander Duyck2f90b862008-11-20 20:52:10 -0800583 if (ret)
Thomas Graf3d1f4862012-06-13 02:54:58 +0000584 return ret;
Alexander Duyck2f90b862008-11-20 20:52:10 -0800585
Thomas Graf7be99412012-06-13 02:54:55 +0000586 pg_nest = nla_nest_start(skb, DCB_ATTR_PG_CFG);
Alexander Duyck2f90b862008-11-20 20:52:10 -0800587 if (!pg_nest)
Thomas Graf3d1f4862012-06-13 02:54:58 +0000588 return -EMSGSIZE;
Alexander Duyck2f90b862008-11-20 20:52:10 -0800589
590 if (pg_tb[DCB_PG_ATTR_TC_ALL])
591 getall = 1;
592
593 for (i = DCB_PG_ATTR_TC_0; i <= DCB_PG_ATTR_TC_7; i++) {
594 if (!getall && !pg_tb[i])
595 continue;
596
597 if (pg_tb[DCB_PG_ATTR_TC_ALL])
598 data = pg_tb[DCB_PG_ATTR_TC_ALL];
599 else
600 data = pg_tb[i];
601 ret = nla_parse_nested(param_tb, DCB_TC_ATTR_PARAM_MAX,
602 data, dcbnl_tc_param_nest);
603 if (ret)
604 goto err_pg;
605
Thomas Graf7be99412012-06-13 02:54:55 +0000606 param_nest = nla_nest_start(skb, i);
Alexander Duyck2f90b862008-11-20 20:52:10 -0800607 if (!param_nest)
608 goto err_pg;
609
610 pgid = DCB_ATTR_VALUE_UNDEFINED;
611 prio = DCB_ATTR_VALUE_UNDEFINED;
612 tc_pct = DCB_ATTR_VALUE_UNDEFINED;
613 up_map = DCB_ATTR_VALUE_UNDEFINED;
614
615 if (dir) {
616 /* Rx */
617 netdev->dcbnl_ops->getpgtccfgrx(netdev,
618 i - DCB_PG_ATTR_TC_0, &prio,
619 &pgid, &tc_pct, &up_map);
620 } else {
621 /* Tx */
622 netdev->dcbnl_ops->getpgtccfgtx(netdev,
623 i - DCB_PG_ATTR_TC_0, &prio,
624 &pgid, &tc_pct, &up_map);
625 }
626
627 if (param_tb[DCB_TC_ATTR_PARAM_PGID] ||
628 param_tb[DCB_TC_ATTR_PARAM_ALL]) {
Thomas Graf7be99412012-06-13 02:54:55 +0000629 ret = nla_put_u8(skb,
Alexander Duyck2f90b862008-11-20 20:52:10 -0800630 DCB_TC_ATTR_PARAM_PGID, pgid);
631 if (ret)
632 goto err_param;
633 }
634 if (param_tb[DCB_TC_ATTR_PARAM_UP_MAPPING] ||
635 param_tb[DCB_TC_ATTR_PARAM_ALL]) {
Thomas Graf7be99412012-06-13 02:54:55 +0000636 ret = nla_put_u8(skb,
Alexander Duyck2f90b862008-11-20 20:52:10 -0800637 DCB_TC_ATTR_PARAM_UP_MAPPING, up_map);
638 if (ret)
639 goto err_param;
640 }
641 if (param_tb[DCB_TC_ATTR_PARAM_STRICT_PRIO] ||
642 param_tb[DCB_TC_ATTR_PARAM_ALL]) {
Thomas Graf7be99412012-06-13 02:54:55 +0000643 ret = nla_put_u8(skb,
Alexander Duyck2f90b862008-11-20 20:52:10 -0800644 DCB_TC_ATTR_PARAM_STRICT_PRIO, prio);
645 if (ret)
646 goto err_param;
647 }
648 if (param_tb[DCB_TC_ATTR_PARAM_BW_PCT] ||
649 param_tb[DCB_TC_ATTR_PARAM_ALL]) {
Thomas Graf7be99412012-06-13 02:54:55 +0000650 ret = nla_put_u8(skb, DCB_TC_ATTR_PARAM_BW_PCT,
Alexander Duyck2f90b862008-11-20 20:52:10 -0800651 tc_pct);
652 if (ret)
653 goto err_param;
654 }
Thomas Graf7be99412012-06-13 02:54:55 +0000655 nla_nest_end(skb, param_nest);
Alexander Duyck2f90b862008-11-20 20:52:10 -0800656 }
657
658 if (pg_tb[DCB_PG_ATTR_BW_ID_ALL])
659 getall = 1;
660 else
661 getall = 0;
662
663 for (i = DCB_PG_ATTR_BW_ID_0; i <= DCB_PG_ATTR_BW_ID_7; i++) {
664 if (!getall && !pg_tb[i])
665 continue;
666
667 tc_pct = DCB_ATTR_VALUE_UNDEFINED;
668
669 if (dir) {
670 /* Rx */
671 netdev->dcbnl_ops->getpgbwgcfgrx(netdev,
672 i - DCB_PG_ATTR_BW_ID_0, &tc_pct);
673 } else {
674 /* Tx */
675 netdev->dcbnl_ops->getpgbwgcfgtx(netdev,
676 i - DCB_PG_ATTR_BW_ID_0, &tc_pct);
677 }
Thomas Graf7be99412012-06-13 02:54:55 +0000678 ret = nla_put_u8(skb, i, tc_pct);
Alexander Duyck2f90b862008-11-20 20:52:10 -0800679 if (ret)
680 goto err_pg;
681 }
682
Thomas Graf7be99412012-06-13 02:54:55 +0000683 nla_nest_end(skb, pg_nest);
Alexander Duyck2f90b862008-11-20 20:52:10 -0800684
685 return 0;
686
687err_param:
Thomas Graf7be99412012-06-13 02:54:55 +0000688 nla_nest_cancel(skb, param_nest);
Alexander Duyck2f90b862008-11-20 20:52:10 -0800689err_pg:
Thomas Graf7be99412012-06-13 02:54:55 +0000690 nla_nest_cancel(skb, pg_nest);
Thomas Graf3d1f4862012-06-13 02:54:58 +0000691
692 return -EMSGSIZE;
Alexander Duyck2f90b862008-11-20 20:52:10 -0800693}
694
Thomas Graf7be99412012-06-13 02:54:55 +0000695static int dcbnl_pgtx_getcfg(struct net_device *netdev, struct nlmsghdr *nlh,
696 u32 seq, struct nlattr **tb, struct sk_buff *skb)
Alexander Duyck2f90b862008-11-20 20:52:10 -0800697{
Thomas Graf7be99412012-06-13 02:54:55 +0000698 return __dcbnl_pg_getcfg(netdev, nlh, tb, skb, 0);
Alexander Duyck2f90b862008-11-20 20:52:10 -0800699}
700
Thomas Graf7be99412012-06-13 02:54:55 +0000701static int dcbnl_pgrx_getcfg(struct net_device *netdev, struct nlmsghdr *nlh,
702 u32 seq, struct nlattr **tb, struct sk_buff *skb)
Alexander Duyck2f90b862008-11-20 20:52:10 -0800703{
Thomas Graf7be99412012-06-13 02:54:55 +0000704 return __dcbnl_pg_getcfg(netdev, nlh, tb, skb, 1);
Alexander Duyck2f90b862008-11-20 20:52:10 -0800705}
706
Thomas Graf7be99412012-06-13 02:54:55 +0000707static int dcbnl_setstate(struct net_device *netdev, struct nlmsghdr *nlh,
708 u32 seq, struct nlattr **tb, struct sk_buff *skb)
Alexander Duyck2f90b862008-11-20 20:52:10 -0800709{
Alexander Duyck2f90b862008-11-20 20:52:10 -0800710 u8 value;
711
Thomas Graf3d1f4862012-06-13 02:54:58 +0000712 if (!tb[DCB_ATTR_STATE])
Thomas Graf7be99412012-06-13 02:54:55 +0000713 return -EINVAL;
Alexander Duyck2f90b862008-11-20 20:52:10 -0800714
Thomas Graf3d1f4862012-06-13 02:54:58 +0000715 if (!netdev->dcbnl_ops->setstate)
716 return -EOPNOTSUPP;
717
Alexander Duyck2f90b862008-11-20 20:52:10 -0800718 value = nla_get_u8(tb[DCB_ATTR_STATE]);
719
Thomas Graf7be99412012-06-13 02:54:55 +0000720 return nla_put_u8(skb, DCB_ATTR_STATE,
721 netdev->dcbnl_ops->setstate(netdev, value));
Alexander Duyck2f90b862008-11-20 20:52:10 -0800722}
723
Thomas Graf7be99412012-06-13 02:54:55 +0000724static int dcbnl_setpfccfg(struct net_device *netdev, struct nlmsghdr *nlh,
725 u32 seq, struct nlattr **tb, struct sk_buff *skb)
Alexander Duyck2f90b862008-11-20 20:52:10 -0800726{
727 struct nlattr *data[DCB_PFC_UP_ATTR_MAX + 1];
728 int i;
Thomas Graf3d1f4862012-06-13 02:54:58 +0000729 int ret;
Alexander Duyck2f90b862008-11-20 20:52:10 -0800730 u8 value;
731
Thomas Graf3d1f4862012-06-13 02:54:58 +0000732 if (!tb[DCB_ATTR_PFC_CFG])
733 return -EINVAL;
734
735 if (!netdev->dcbnl_ops->setpfccfg)
736 return -EOPNOTSUPP;
Alexander Duyck2f90b862008-11-20 20:52:10 -0800737
738 ret = nla_parse_nested(data, DCB_PFC_UP_ATTR_MAX,
739 tb[DCB_ATTR_PFC_CFG],
740 dcbnl_pfc_up_nest);
741 if (ret)
Thomas Graf3d1f4862012-06-13 02:54:58 +0000742 return ret;
Alexander Duyck2f90b862008-11-20 20:52:10 -0800743
744 for (i = DCB_PFC_UP_ATTR_0; i <= DCB_PFC_UP_ATTR_7; i++) {
745 if (data[i] == NULL)
746 continue;
747 value = nla_get_u8(data[i]);
748 netdev->dcbnl_ops->setpfccfg(netdev,
749 data[i]->nla_type - DCB_PFC_UP_ATTR_0, value);
750 }
751
Thomas Graf7be99412012-06-13 02:54:55 +0000752 return nla_put_u8(skb, DCB_ATTR_PFC_CFG, 0);
Alexander Duyck2f90b862008-11-20 20:52:10 -0800753}
754
Thomas Graf7be99412012-06-13 02:54:55 +0000755static int dcbnl_setall(struct net_device *netdev, struct nlmsghdr *nlh,
756 u32 seq, struct nlattr **tb, struct sk_buff *skb)
Alexander Duyck2f90b862008-11-20 20:52:10 -0800757{
Thomas Graf3d1f4862012-06-13 02:54:58 +0000758 int ret;
Alexander Duyck2f90b862008-11-20 20:52:10 -0800759
Thomas Graf3d1f4862012-06-13 02:54:58 +0000760 if (!tb[DCB_ATTR_SET_ALL])
761 return -EINVAL;
762
763 if (!netdev->dcbnl_ops->setall)
764 return -EOPNOTSUPP;
Alexander Duyck2f90b862008-11-20 20:52:10 -0800765
Thomas Graf7be99412012-06-13 02:54:55 +0000766 ret = nla_put_u8(skb, DCB_ATTR_SET_ALL,
767 netdev->dcbnl_ops->setall(netdev));
John Fastabend08157982012-04-20 09:49:23 +0000768 dcbnl_cee_notify(netdev, RTM_SETDCB, DCB_CMD_SET_ALL, seq, 0);
Alexander Duyck2f90b862008-11-20 20:52:10 -0800769
770 return ret;
771}
772
Thomas Graf7be99412012-06-13 02:54:55 +0000773static int __dcbnl_pg_setcfg(struct net_device *netdev, struct nlmsghdr *nlh,
774 u32 seq, struct nlattr **tb, struct sk_buff *skb,
775 int dir)
Alexander Duyck2f90b862008-11-20 20:52:10 -0800776{
777 struct nlattr *pg_tb[DCB_PG_ATTR_MAX + 1];
778 struct nlattr *param_tb[DCB_TC_ATTR_PARAM_MAX + 1];
Thomas Graf3d1f4862012-06-13 02:54:58 +0000779 int ret;
Alexander Duyck2f90b862008-11-20 20:52:10 -0800780 int i;
781 u8 pgid;
782 u8 up_map;
783 u8 prio;
784 u8 tc_pct;
785
Thomas Graf3d1f4862012-06-13 02:54:58 +0000786 if (!tb[DCB_ATTR_PG_CFG])
787 return -EINVAL;
788
789 if (!netdev->dcbnl_ops->setpgtccfgtx ||
Alexander Duyck2f90b862008-11-20 20:52:10 -0800790 !netdev->dcbnl_ops->setpgtccfgrx ||
791 !netdev->dcbnl_ops->setpgbwgcfgtx ||
792 !netdev->dcbnl_ops->setpgbwgcfgrx)
Thomas Graf3d1f4862012-06-13 02:54:58 +0000793 return -EOPNOTSUPP;
Alexander Duyck2f90b862008-11-20 20:52:10 -0800794
795 ret = nla_parse_nested(pg_tb, DCB_PG_ATTR_MAX,
796 tb[DCB_ATTR_PG_CFG], dcbnl_pg_nest);
797 if (ret)
Thomas Graf3d1f4862012-06-13 02:54:58 +0000798 return ret;
Alexander Duyck2f90b862008-11-20 20:52:10 -0800799
800 for (i = DCB_PG_ATTR_TC_0; i <= DCB_PG_ATTR_TC_7; i++) {
801 if (!pg_tb[i])
802 continue;
803
804 ret = nla_parse_nested(param_tb, DCB_TC_ATTR_PARAM_MAX,
805 pg_tb[i], dcbnl_tc_param_nest);
806 if (ret)
Thomas Graf3d1f4862012-06-13 02:54:58 +0000807 return ret;
Alexander Duyck2f90b862008-11-20 20:52:10 -0800808
809 pgid = DCB_ATTR_VALUE_UNDEFINED;
810 prio = DCB_ATTR_VALUE_UNDEFINED;
811 tc_pct = DCB_ATTR_VALUE_UNDEFINED;
812 up_map = DCB_ATTR_VALUE_UNDEFINED;
813
814 if (param_tb[DCB_TC_ATTR_PARAM_STRICT_PRIO])
815 prio =
816 nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_STRICT_PRIO]);
817
818 if (param_tb[DCB_TC_ATTR_PARAM_PGID])
819 pgid = nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_PGID]);
820
821 if (param_tb[DCB_TC_ATTR_PARAM_BW_PCT])
822 tc_pct = nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_BW_PCT]);
823
824 if (param_tb[DCB_TC_ATTR_PARAM_UP_MAPPING])
825 up_map =
826 nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_UP_MAPPING]);
827
828 /* dir: Tx = 0, Rx = 1 */
829 if (dir) {
830 /* Rx */
831 netdev->dcbnl_ops->setpgtccfgrx(netdev,
832 i - DCB_PG_ATTR_TC_0,
833 prio, pgid, tc_pct, up_map);
834 } else {
835 /* Tx */
836 netdev->dcbnl_ops->setpgtccfgtx(netdev,
837 i - DCB_PG_ATTR_TC_0,
838 prio, pgid, tc_pct, up_map);
839 }
840 }
841
842 for (i = DCB_PG_ATTR_BW_ID_0; i <= DCB_PG_ATTR_BW_ID_7; i++) {
843 if (!pg_tb[i])
844 continue;
845
846 tc_pct = nla_get_u8(pg_tb[i]);
847
848 /* dir: Tx = 0, Rx = 1 */
849 if (dir) {
850 /* Rx */
851 netdev->dcbnl_ops->setpgbwgcfgrx(netdev,
852 i - DCB_PG_ATTR_BW_ID_0, tc_pct);
853 } else {
854 /* Tx */
855 netdev->dcbnl_ops->setpgbwgcfgtx(netdev,
856 i - DCB_PG_ATTR_BW_ID_0, tc_pct);
857 }
858 }
859
John Fastabendbb1dfef2012-06-20 19:56:21 +0000860 return nla_put_u8(skb, DCB_ATTR_PG_CFG, 0);
Alexander Duyck2f90b862008-11-20 20:52:10 -0800861}
862
Thomas Graf7be99412012-06-13 02:54:55 +0000863static int dcbnl_pgtx_setcfg(struct net_device *netdev, struct nlmsghdr *nlh,
864 u32 seq, struct nlattr **tb, struct sk_buff *skb)
Alexander Duyck2f90b862008-11-20 20:52:10 -0800865{
Thomas Graf7be99412012-06-13 02:54:55 +0000866 return __dcbnl_pg_setcfg(netdev, nlh, seq, tb, skb, 0);
Alexander Duyck2f90b862008-11-20 20:52:10 -0800867}
868
Thomas Graf7be99412012-06-13 02:54:55 +0000869static int dcbnl_pgrx_setcfg(struct net_device *netdev, struct nlmsghdr *nlh,
870 u32 seq, struct nlattr **tb, struct sk_buff *skb)
Alexander Duyck2f90b862008-11-20 20:52:10 -0800871{
Thomas Graf7be99412012-06-13 02:54:55 +0000872 return __dcbnl_pg_setcfg(netdev, nlh, seq, tb, skb, 1);
Alexander Duyck2f90b862008-11-20 20:52:10 -0800873}
874
Thomas Graf7be99412012-06-13 02:54:55 +0000875static int dcbnl_bcn_getcfg(struct net_device *netdev, struct nlmsghdr *nlh,
876 u32 seq, struct nlattr **tb, struct sk_buff *skb)
Alexander Duyck859ee3c2008-11-20 21:10:23 -0800877{
Alexander Duyck859ee3c2008-11-20 21:10:23 -0800878 struct nlattr *bcn_nest;
879 struct nlattr *bcn_tb[DCB_BCN_ATTR_MAX + 1];
880 u8 value_byte;
881 u32 value_integer;
Thomas Graf3d1f4862012-06-13 02:54:58 +0000882 int ret;
Alexander Duyck859ee3c2008-11-20 21:10:23 -0800883 bool getall = false;
884 int i;
885
Thomas Graf3d1f4862012-06-13 02:54:58 +0000886 if (!tb[DCB_ATTR_BCN])
887 return -EINVAL;
888
889 if (!netdev->dcbnl_ops->getbcnrp ||
Alexander Duyck859ee3c2008-11-20 21:10:23 -0800890 !netdev->dcbnl_ops->getbcncfg)
Thomas Graf3d1f4862012-06-13 02:54:58 +0000891 return -EOPNOTSUPP;
Alexander Duyck859ee3c2008-11-20 21:10:23 -0800892
893 ret = nla_parse_nested(bcn_tb, DCB_BCN_ATTR_MAX,
894 tb[DCB_ATTR_BCN], dcbnl_bcn_nest);
Alexander Duyck859ee3c2008-11-20 21:10:23 -0800895 if (ret)
Thomas Graf3d1f4862012-06-13 02:54:58 +0000896 return ret;
Alexander Duyck859ee3c2008-11-20 21:10:23 -0800897
Thomas Graf7be99412012-06-13 02:54:55 +0000898 bcn_nest = nla_nest_start(skb, DCB_ATTR_BCN);
Alexander Duyck859ee3c2008-11-20 21:10:23 -0800899 if (!bcn_nest)
Thomas Graf3d1f4862012-06-13 02:54:58 +0000900 return -EMSGSIZE;
Alexander Duyck859ee3c2008-11-20 21:10:23 -0800901
902 if (bcn_tb[DCB_BCN_ATTR_ALL])
903 getall = true;
904
905 for (i = DCB_BCN_ATTR_RP_0; i <= DCB_BCN_ATTR_RP_7; i++) {
906 if (!getall && !bcn_tb[i])
907 continue;
908
909 netdev->dcbnl_ops->getbcnrp(netdev, i - DCB_BCN_ATTR_RP_0,
910 &value_byte);
Thomas Graf7be99412012-06-13 02:54:55 +0000911 ret = nla_put_u8(skb, i, value_byte);
Alexander Duyck859ee3c2008-11-20 21:10:23 -0800912 if (ret)
913 goto err_bcn;
914 }
915
Don Skidmoref4314e82008-12-21 20:10:29 -0800916 for (i = DCB_BCN_ATTR_BCNA_0; i <= DCB_BCN_ATTR_RI; i++) {
Alexander Duyck859ee3c2008-11-20 21:10:23 -0800917 if (!getall && !bcn_tb[i])
918 continue;
919
920 netdev->dcbnl_ops->getbcncfg(netdev, i,
921 &value_integer);
Thomas Graf7be99412012-06-13 02:54:55 +0000922 ret = nla_put_u32(skb, i, value_integer);
Alexander Duyck859ee3c2008-11-20 21:10:23 -0800923 if (ret)
924 goto err_bcn;
925 }
926
Thomas Graf7be99412012-06-13 02:54:55 +0000927 nla_nest_end(skb, bcn_nest);
Alexander Duyck859ee3c2008-11-20 21:10:23 -0800928
929 return 0;
930
931err_bcn:
Thomas Graf7be99412012-06-13 02:54:55 +0000932 nla_nest_cancel(skb, bcn_nest);
Alexander Duyck859ee3c2008-11-20 21:10:23 -0800933 return ret;
934}
935
Thomas Graf7be99412012-06-13 02:54:55 +0000936static int dcbnl_bcn_setcfg(struct net_device *netdev, struct nlmsghdr *nlh,
937 u32 seq, struct nlattr **tb, struct sk_buff *skb)
Alexander Duyck859ee3c2008-11-20 21:10:23 -0800938{
939 struct nlattr *data[DCB_BCN_ATTR_MAX + 1];
940 int i;
Thomas Graf3d1f4862012-06-13 02:54:58 +0000941 int ret;
Alexander Duyck859ee3c2008-11-20 21:10:23 -0800942 u8 value_byte;
943 u32 value_int;
944
Thomas Graf3d1f4862012-06-13 02:54:58 +0000945 if (!tb[DCB_ATTR_BCN])
946 return -EINVAL;
947
948 if (!netdev->dcbnl_ops->setbcncfg ||
Joe Perchesf64f9e72009-11-29 16:55:45 -0800949 !netdev->dcbnl_ops->setbcnrp)
Thomas Graf3d1f4862012-06-13 02:54:58 +0000950 return -EOPNOTSUPP;
Alexander Duyck859ee3c2008-11-20 21:10:23 -0800951
952 ret = nla_parse_nested(data, DCB_BCN_ATTR_MAX,
953 tb[DCB_ATTR_BCN],
954 dcbnl_pfc_up_nest);
955 if (ret)
Thomas Graf3d1f4862012-06-13 02:54:58 +0000956 return ret;
Alexander Duyck859ee3c2008-11-20 21:10:23 -0800957
958 for (i = DCB_BCN_ATTR_RP_0; i <= DCB_BCN_ATTR_RP_7; i++) {
959 if (data[i] == NULL)
960 continue;
961 value_byte = nla_get_u8(data[i]);
962 netdev->dcbnl_ops->setbcnrp(netdev,
963 data[i]->nla_type - DCB_BCN_ATTR_RP_0, value_byte);
964 }
965
Don Skidmoref4314e82008-12-21 20:10:29 -0800966 for (i = DCB_BCN_ATTR_BCNA_0; i <= DCB_BCN_ATTR_RI; i++) {
Alexander Duyck859ee3c2008-11-20 21:10:23 -0800967 if (data[i] == NULL)
968 continue;
969 value_int = nla_get_u32(data[i]);
970 netdev->dcbnl_ops->setbcncfg(netdev,
971 i, value_int);
972 }
973
Thomas Graf3d1f4862012-06-13 02:54:58 +0000974 return nla_put_u8(skb, DCB_ATTR_BCN, 0);
Alexander Duyck859ee3c2008-11-20 21:10:23 -0800975}
976
Shmulik Raviddc6ed1d2011-02-27 05:04:38 +0000977static int dcbnl_build_peer_app(struct net_device *netdev, struct sk_buff* skb,
978 int app_nested_type, int app_info_type,
979 int app_entry_type)
Shmulik Ravideed84712011-02-27 05:04:31 +0000980{
981 struct dcb_peer_app_info info;
982 struct dcb_app *table = NULL;
983 const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
984 u16 app_count;
985 int err;
986
987
988 /**
989 * retrieve the peer app configuration form the driver. If the driver
990 * handlers fail exit without doing anything
991 */
992 err = ops->peer_getappinfo(netdev, &info, &app_count);
993 if (!err && app_count) {
994 table = kmalloc(sizeof(struct dcb_app) * app_count, GFP_KERNEL);
995 if (!table)
996 return -ENOMEM;
997
998 err = ops->peer_getapptable(netdev, table);
999 }
1000
1001 if (!err) {
1002 u16 i;
1003 struct nlattr *app;
1004
1005 /**
1006 * build the message, from here on the only possible failure
1007 * is due to the skb size
1008 */
1009 err = -EMSGSIZE;
1010
Shmulik Raviddc6ed1d2011-02-27 05:04:38 +00001011 app = nla_nest_start(skb, app_nested_type);
Shmulik Ravideed84712011-02-27 05:04:31 +00001012 if (!app)
1013 goto nla_put_failure;
1014
David S. Miller1eb4c972012-04-01 20:03:01 -04001015 if (app_info_type &&
1016 nla_put(skb, app_info_type, sizeof(info), &info))
1017 goto nla_put_failure;
Shmulik Raviddc6ed1d2011-02-27 05:04:38 +00001018
David S. Miller1eb4c972012-04-01 20:03:01 -04001019 for (i = 0; i < app_count; i++) {
1020 if (nla_put(skb, app_entry_type, sizeof(struct dcb_app),
1021 &table[i]))
1022 goto nla_put_failure;
1023 }
Shmulik Ravideed84712011-02-27 05:04:31 +00001024 nla_nest_end(skb, app);
1025 }
1026 err = 0;
1027
1028nla_put_failure:
1029 kfree(table);
1030 return err;
1031}
John Fastabend3e290272010-12-30 09:25:46 +00001032
1033/* Handle IEEE 802.1Qaz GET commands. */
John Fastabend314b4772011-06-21 07:34:37 +00001034static int dcbnl_ieee_fill(struct sk_buff *skb, struct net_device *netdev)
John Fastabend3e290272010-12-30 09:25:46 +00001035{
John Fastabend9ab933a2010-12-30 09:26:31 +00001036 struct nlattr *ieee, *app;
1037 struct dcb_app_type *itr;
John Fastabend3e290272010-12-30 09:25:46 +00001038 const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
John Fastabendc7797ba2011-06-21 07:34:31 +00001039 int dcbx;
Thomas Graf3d1f4862012-06-13 02:54:58 +00001040 int err;
John Fastabend3e290272010-12-30 09:25:46 +00001041
David S. Miller1eb4c972012-04-01 20:03:01 -04001042 if (nla_put_string(skb, DCB_ATTR_IFNAME, netdev->name))
Thomas Graf3d1f4862012-06-13 02:54:58 +00001043 return -EMSGSIZE;
1044
John Fastabend3e290272010-12-30 09:25:46 +00001045 ieee = nla_nest_start(skb, DCB_ATTR_IEEE);
1046 if (!ieee)
Thomas Graf3d1f4862012-06-13 02:54:58 +00001047 return -EMSGSIZE;
John Fastabend3e290272010-12-30 09:25:46 +00001048
1049 if (ops->ieee_getets) {
1050 struct ieee_ets ets;
Mathias Krause29cd8ae2013-03-09 05:52:21 +00001051 memset(&ets, 0, sizeof(ets));
John Fastabend3e290272010-12-30 09:25:46 +00001052 err = ops->ieee_getets(netdev, &ets);
David S. Miller1eb4c972012-04-01 20:03:01 -04001053 if (!err &&
1054 nla_put(skb, DCB_ATTR_IEEE_ETS, sizeof(ets), &ets))
Thomas Graf3d1f4862012-06-13 02:54:58 +00001055 return -EMSGSIZE;
John Fastabend3e290272010-12-30 09:25:46 +00001056 }
1057
Amir Vadai08f10af2012-04-04 21:33:30 +00001058 if (ops->ieee_getmaxrate) {
1059 struct ieee_maxrate maxrate;
Mathias Krause29cd8ae2013-03-09 05:52:21 +00001060 memset(&maxrate, 0, sizeof(maxrate));
Amir Vadai08f10af2012-04-04 21:33:30 +00001061 err = ops->ieee_getmaxrate(netdev, &maxrate);
1062 if (!err) {
1063 err = nla_put(skb, DCB_ATTR_IEEE_MAXRATE,
1064 sizeof(maxrate), &maxrate);
1065 if (err)
Thomas Graf3d1f4862012-06-13 02:54:58 +00001066 return -EMSGSIZE;
Amir Vadai08f10af2012-04-04 21:33:30 +00001067 }
1068 }
1069
John Fastabend3e290272010-12-30 09:25:46 +00001070 if (ops->ieee_getpfc) {
1071 struct ieee_pfc pfc;
Mathias Krause29cd8ae2013-03-09 05:52:21 +00001072 memset(&pfc, 0, sizeof(pfc));
John Fastabend3e290272010-12-30 09:25:46 +00001073 err = ops->ieee_getpfc(netdev, &pfc);
David S. Miller1eb4c972012-04-01 20:03:01 -04001074 if (!err &&
1075 nla_put(skb, DCB_ATTR_IEEE_PFC, sizeof(pfc), &pfc))
Thomas Graf3d1f4862012-06-13 02:54:58 +00001076 return -EMSGSIZE;
John Fastabend3e290272010-12-30 09:25:46 +00001077 }
1078
John Fastabend9ab933a2010-12-30 09:26:31 +00001079 app = nla_nest_start(skb, DCB_ATTR_IEEE_APP_TABLE);
1080 if (!app)
Thomas Graf3d1f4862012-06-13 02:54:58 +00001081 return -EMSGSIZE;
John Fastabend9ab933a2010-12-30 09:26:31 +00001082
Anish Bhatt52cff742014-11-14 16:38:31 -08001083 spin_lock_bh(&dcb_lock);
John Fastabend9ab933a2010-12-30 09:26:31 +00001084 list_for_each_entry(itr, &dcb_app_list, list) {
Mark Rustade290ed82011-10-06 08:52:33 +00001085 if (itr->ifindex == netdev->ifindex) {
Dan Carpenter70bfa2d2011-01-04 21:03:12 +00001086 err = nla_put(skb, DCB_ATTR_IEEE_APP, sizeof(itr->app),
1087 &itr->app);
1088 if (err) {
Anish Bhatt52cff742014-11-14 16:38:31 -08001089 spin_unlock_bh(&dcb_lock);
Thomas Graf3d1f4862012-06-13 02:54:58 +00001090 return -EMSGSIZE;
Dan Carpenter70bfa2d2011-01-04 21:03:12 +00001091 }
1092 }
John Fastabend9ab933a2010-12-30 09:26:31 +00001093 }
John Fastabendc7797ba2011-06-21 07:34:31 +00001094
1095 if (netdev->dcbnl_ops->getdcbx)
1096 dcbx = netdev->dcbnl_ops->getdcbx(netdev);
1097 else
1098 dcbx = -EOPNOTSUPP;
1099
Anish Bhatt52cff742014-11-14 16:38:31 -08001100 spin_unlock_bh(&dcb_lock);
John Fastabend9ab933a2010-12-30 09:26:31 +00001101 nla_nest_end(skb, app);
1102
Shmulik Ravideed84712011-02-27 05:04:31 +00001103 /* get peer info if available */
1104 if (ops->ieee_peer_getets) {
1105 struct ieee_ets ets;
Mathias Krause29cd8ae2013-03-09 05:52:21 +00001106 memset(&ets, 0, sizeof(ets));
Shmulik Ravideed84712011-02-27 05:04:31 +00001107 err = ops->ieee_peer_getets(netdev, &ets);
David S. Miller1eb4c972012-04-01 20:03:01 -04001108 if (!err &&
1109 nla_put(skb, DCB_ATTR_IEEE_PEER_ETS, sizeof(ets), &ets))
Thomas Graf3d1f4862012-06-13 02:54:58 +00001110 return -EMSGSIZE;
Shmulik Ravideed84712011-02-27 05:04:31 +00001111 }
1112
1113 if (ops->ieee_peer_getpfc) {
1114 struct ieee_pfc pfc;
Mathias Krause29cd8ae2013-03-09 05:52:21 +00001115 memset(&pfc, 0, sizeof(pfc));
Shmulik Ravideed84712011-02-27 05:04:31 +00001116 err = ops->ieee_peer_getpfc(netdev, &pfc);
David S. Miller1eb4c972012-04-01 20:03:01 -04001117 if (!err &&
1118 nla_put(skb, DCB_ATTR_IEEE_PEER_PFC, sizeof(pfc), &pfc))
Thomas Graf3d1f4862012-06-13 02:54:58 +00001119 return -EMSGSIZE;
Shmulik Ravideed84712011-02-27 05:04:31 +00001120 }
1121
1122 if (ops->peer_getappinfo && ops->peer_getapptable) {
Shmulik Raviddc6ed1d2011-02-27 05:04:38 +00001123 err = dcbnl_build_peer_app(netdev, skb,
1124 DCB_ATTR_IEEE_PEER_APP,
1125 DCB_ATTR_IEEE_APP_UNSPEC,
1126 DCB_ATTR_IEEE_APP);
Shmulik Ravideed84712011-02-27 05:04:31 +00001127 if (err)
Thomas Graf3d1f4862012-06-13 02:54:58 +00001128 return -EMSGSIZE;
Shmulik Ravideed84712011-02-27 05:04:31 +00001129 }
1130
John Fastabend3e290272010-12-30 09:25:46 +00001131 nla_nest_end(skb, ieee);
John Fastabendc7797ba2011-06-21 07:34:31 +00001132 if (dcbx >= 0) {
1133 err = nla_put_u8(skb, DCB_ATTR_DCBX, dcbx);
1134 if (err)
Thomas Graf3d1f4862012-06-13 02:54:58 +00001135 return -EMSGSIZE;
John Fastabendc7797ba2011-06-21 07:34:31 +00001136 }
John Fastabend3e290272010-12-30 09:25:46 +00001137
John Fastabend314b4772011-06-21 07:34:37 +00001138 return 0;
John Fastabend3e290272010-12-30 09:25:46 +00001139}
1140
Shmulik Ravid5b7f7622011-07-05 06:16:25 +00001141static int dcbnl_cee_pg_fill(struct sk_buff *skb, struct net_device *dev,
1142 int dir)
1143{
1144 u8 pgid, up_map, prio, tc_pct;
1145 const struct dcbnl_rtnl_ops *ops = dev->dcbnl_ops;
1146 int i = dir ? DCB_ATTR_CEE_TX_PG : DCB_ATTR_CEE_RX_PG;
1147 struct nlattr *pg = nla_nest_start(skb, i);
1148
1149 if (!pg)
Thomas Graf3d1f4862012-06-13 02:54:58 +00001150 return -EMSGSIZE;
Shmulik Ravid5b7f7622011-07-05 06:16:25 +00001151
1152 for (i = DCB_PG_ATTR_TC_0; i <= DCB_PG_ATTR_TC_7; i++) {
1153 struct nlattr *tc_nest = nla_nest_start(skb, i);
1154
1155 if (!tc_nest)
Thomas Graf3d1f4862012-06-13 02:54:58 +00001156 return -EMSGSIZE;
Shmulik Ravid5b7f7622011-07-05 06:16:25 +00001157
1158 pgid = DCB_ATTR_VALUE_UNDEFINED;
1159 prio = DCB_ATTR_VALUE_UNDEFINED;
1160 tc_pct = DCB_ATTR_VALUE_UNDEFINED;
1161 up_map = DCB_ATTR_VALUE_UNDEFINED;
1162
1163 if (!dir)
1164 ops->getpgtccfgrx(dev, i - DCB_PG_ATTR_TC_0,
1165 &prio, &pgid, &tc_pct, &up_map);
1166 else
1167 ops->getpgtccfgtx(dev, i - DCB_PG_ATTR_TC_0,
1168 &prio, &pgid, &tc_pct, &up_map);
1169
David S. Miller1eb4c972012-04-01 20:03:01 -04001170 if (nla_put_u8(skb, DCB_TC_ATTR_PARAM_PGID, pgid) ||
1171 nla_put_u8(skb, DCB_TC_ATTR_PARAM_UP_MAPPING, up_map) ||
1172 nla_put_u8(skb, DCB_TC_ATTR_PARAM_STRICT_PRIO, prio) ||
1173 nla_put_u8(skb, DCB_TC_ATTR_PARAM_BW_PCT, tc_pct))
Thomas Graf3d1f4862012-06-13 02:54:58 +00001174 return -EMSGSIZE;
Shmulik Ravid5b7f7622011-07-05 06:16:25 +00001175 nla_nest_end(skb, tc_nest);
1176 }
1177
1178 for (i = DCB_PG_ATTR_BW_ID_0; i <= DCB_PG_ATTR_BW_ID_7; i++) {
1179 tc_pct = DCB_ATTR_VALUE_UNDEFINED;
1180
1181 if (!dir)
1182 ops->getpgbwgcfgrx(dev, i - DCB_PG_ATTR_BW_ID_0,
1183 &tc_pct);
1184 else
1185 ops->getpgbwgcfgtx(dev, i - DCB_PG_ATTR_BW_ID_0,
1186 &tc_pct);
David S. Miller1eb4c972012-04-01 20:03:01 -04001187 if (nla_put_u8(skb, i, tc_pct))
Thomas Graf3d1f4862012-06-13 02:54:58 +00001188 return -EMSGSIZE;
Shmulik Ravid5b7f7622011-07-05 06:16:25 +00001189 }
1190 nla_nest_end(skb, pg);
1191 return 0;
Shmulik Ravid5b7f7622011-07-05 06:16:25 +00001192}
1193
1194static int dcbnl_cee_fill(struct sk_buff *skb, struct net_device *netdev)
1195{
1196 struct nlattr *cee, *app;
1197 struct dcb_app_type *itr;
1198 const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
1199 int dcbx, i, err = -EMSGSIZE;
1200 u8 value;
1201
David S. Miller1eb4c972012-04-01 20:03:01 -04001202 if (nla_put_string(skb, DCB_ATTR_IFNAME, netdev->name))
1203 goto nla_put_failure;
Shmulik Ravid5b7f7622011-07-05 06:16:25 +00001204 cee = nla_nest_start(skb, DCB_ATTR_CEE);
1205 if (!cee)
1206 goto nla_put_failure;
1207
1208 /* local pg */
1209 if (ops->getpgtccfgtx && ops->getpgbwgcfgtx) {
1210 err = dcbnl_cee_pg_fill(skb, netdev, 1);
1211 if (err)
1212 goto nla_put_failure;
1213 }
1214
1215 if (ops->getpgtccfgrx && ops->getpgbwgcfgrx) {
1216 err = dcbnl_cee_pg_fill(skb, netdev, 0);
1217 if (err)
1218 goto nla_put_failure;
1219 }
1220
1221 /* local pfc */
1222 if (ops->getpfccfg) {
1223 struct nlattr *pfc_nest = nla_nest_start(skb, DCB_ATTR_CEE_PFC);
1224
1225 if (!pfc_nest)
1226 goto nla_put_failure;
1227
1228 for (i = DCB_PFC_UP_ATTR_0; i <= DCB_PFC_UP_ATTR_7; i++) {
1229 ops->getpfccfg(netdev, i - DCB_PFC_UP_ATTR_0, &value);
David S. Miller1eb4c972012-04-01 20:03:01 -04001230 if (nla_put_u8(skb, i, value))
1231 goto nla_put_failure;
Shmulik Ravid5b7f7622011-07-05 06:16:25 +00001232 }
1233 nla_nest_end(skb, pfc_nest);
1234 }
1235
1236 /* local app */
Anish Bhatt52cff742014-11-14 16:38:31 -08001237 spin_lock_bh(&dcb_lock);
Shmulik Ravid5b7f7622011-07-05 06:16:25 +00001238 app = nla_nest_start(skb, DCB_ATTR_CEE_APP_TABLE);
1239 if (!app)
Dan Carpenter40f5d722011-07-07 21:27:24 +00001240 goto dcb_unlock;
Shmulik Ravid5b7f7622011-07-05 06:16:25 +00001241
1242 list_for_each_entry(itr, &dcb_app_list, list) {
Mark Rustade290ed82011-10-06 08:52:33 +00001243 if (itr->ifindex == netdev->ifindex) {
Shmulik Ravid5b7f7622011-07-05 06:16:25 +00001244 struct nlattr *app_nest = nla_nest_start(skb,
1245 DCB_ATTR_APP);
1246 if (!app_nest)
1247 goto dcb_unlock;
1248
1249 err = nla_put_u8(skb, DCB_APP_ATTR_IDTYPE,
1250 itr->app.selector);
1251 if (err)
1252 goto dcb_unlock;
1253
1254 err = nla_put_u16(skb, DCB_APP_ATTR_ID,
1255 itr->app.protocol);
1256 if (err)
1257 goto dcb_unlock;
1258
1259 err = nla_put_u8(skb, DCB_APP_ATTR_PRIORITY,
1260 itr->app.priority);
1261 if (err)
1262 goto dcb_unlock;
1263
1264 nla_nest_end(skb, app_nest);
1265 }
1266 }
1267 nla_nest_end(skb, app);
1268
1269 if (netdev->dcbnl_ops->getdcbx)
1270 dcbx = netdev->dcbnl_ops->getdcbx(netdev);
1271 else
1272 dcbx = -EOPNOTSUPP;
1273
Anish Bhatt52cff742014-11-14 16:38:31 -08001274 spin_unlock_bh(&dcb_lock);
Shmulik Ravid5b7f7622011-07-05 06:16:25 +00001275
1276 /* features flags */
1277 if (ops->getfeatcfg) {
1278 struct nlattr *feat = nla_nest_start(skb, DCB_ATTR_CEE_FEAT);
1279 if (!feat)
1280 goto nla_put_failure;
1281
1282 for (i = DCB_FEATCFG_ATTR_ALL + 1; i <= DCB_FEATCFG_ATTR_MAX;
1283 i++)
David S. Miller1eb4c972012-04-01 20:03:01 -04001284 if (!ops->getfeatcfg(netdev, i, &value) &&
1285 nla_put_u8(skb, i, value))
1286 goto nla_put_failure;
Shmulik Ravid5b7f7622011-07-05 06:16:25 +00001287
1288 nla_nest_end(skb, feat);
1289 }
1290
1291 /* peer info if available */
1292 if (ops->cee_peer_getpg) {
1293 struct cee_pg pg;
Mathias Krause29cd8ae2013-03-09 05:52:21 +00001294 memset(&pg, 0, sizeof(pg));
Shmulik Ravid5b7f7622011-07-05 06:16:25 +00001295 err = ops->cee_peer_getpg(netdev, &pg);
David S. Miller1eb4c972012-04-01 20:03:01 -04001296 if (!err &&
1297 nla_put(skb, DCB_ATTR_CEE_PEER_PG, sizeof(pg), &pg))
1298 goto nla_put_failure;
Shmulik Ravid5b7f7622011-07-05 06:16:25 +00001299 }
1300
1301 if (ops->cee_peer_getpfc) {
1302 struct cee_pfc pfc;
Mathias Krause29cd8ae2013-03-09 05:52:21 +00001303 memset(&pfc, 0, sizeof(pfc));
Shmulik Ravid5b7f7622011-07-05 06:16:25 +00001304 err = ops->cee_peer_getpfc(netdev, &pfc);
David S. Miller1eb4c972012-04-01 20:03:01 -04001305 if (!err &&
1306 nla_put(skb, DCB_ATTR_CEE_PEER_PFC, sizeof(pfc), &pfc))
1307 goto nla_put_failure;
Shmulik Ravid5b7f7622011-07-05 06:16:25 +00001308 }
1309
1310 if (ops->peer_getappinfo && ops->peer_getapptable) {
1311 err = dcbnl_build_peer_app(netdev, skb,
1312 DCB_ATTR_CEE_PEER_APP_TABLE,
1313 DCB_ATTR_CEE_PEER_APP_INFO,
1314 DCB_ATTR_CEE_PEER_APP);
1315 if (err)
1316 goto nla_put_failure;
1317 }
1318 nla_nest_end(skb, cee);
1319
1320 /* DCBX state */
1321 if (dcbx >= 0) {
1322 err = nla_put_u8(skb, DCB_ATTR_DCBX, dcbx);
1323 if (err)
1324 goto nla_put_failure;
1325 }
1326 return 0;
1327
1328dcb_unlock:
Anish Bhatt52cff742014-11-14 16:38:31 -08001329 spin_unlock_bh(&dcb_lock);
Shmulik Ravid5b7f7622011-07-05 06:16:25 +00001330nla_put_failure:
1331 return err;
1332}
1333
1334static int dcbnl_notify(struct net_device *dev, int event, int cmd,
Eric W. Biederman15e47302012-09-07 20:12:54 +00001335 u32 seq, u32 portid, int dcbx_ver)
John Fastabend314b4772011-06-21 07:34:37 +00001336{
1337 struct net *net = dev_net(dev);
1338 struct sk_buff *skb;
1339 struct nlmsghdr *nlh;
John Fastabend314b4772011-06-21 07:34:37 +00001340 const struct dcbnl_rtnl_ops *ops = dev->dcbnl_ops;
1341 int err;
1342
1343 if (!ops)
1344 return -EOPNOTSUPP;
1345
Eric W. Biederman15e47302012-09-07 20:12:54 +00001346 skb = dcbnl_newmsg(event, cmd, portid, seq, 0, &nlh);
John Fastabend314b4772011-06-21 07:34:37 +00001347 if (!skb)
1348 return -ENOBUFS;
1349
Shmulik Ravid5b7f7622011-07-05 06:16:25 +00001350 if (dcbx_ver == DCB_CAP_DCBX_VER_IEEE)
1351 err = dcbnl_ieee_fill(skb, dev);
1352 else
1353 err = dcbnl_cee_fill(skb, dev);
1354
John Fastabend314b4772011-06-21 07:34:37 +00001355 if (err < 0) {
1356 /* Report error to broadcast listeners */
Thomas Grafab6d4702012-06-13 02:54:57 +00001357 nlmsg_free(skb);
John Fastabend314b4772011-06-21 07:34:37 +00001358 rtnl_set_sk_err(net, RTNLGRP_DCB, err);
1359 } else {
1360 /* End nlmsg and notify broadcast listeners */
1361 nlmsg_end(skb, nlh);
1362 rtnl_notify(skb, net, 0, RTNLGRP_DCB, NULL, GFP_KERNEL);
1363 }
1364
1365 return err;
1366}
Shmulik Ravid5b7f7622011-07-05 06:16:25 +00001367
1368int dcbnl_ieee_notify(struct net_device *dev, int event, int cmd,
Eric W. Biederman15e47302012-09-07 20:12:54 +00001369 u32 seq, u32 portid)
Shmulik Ravid5b7f7622011-07-05 06:16:25 +00001370{
Eric W. Biederman15e47302012-09-07 20:12:54 +00001371 return dcbnl_notify(dev, event, cmd, seq, portid, DCB_CAP_DCBX_VER_IEEE);
Shmulik Ravid5b7f7622011-07-05 06:16:25 +00001372}
1373EXPORT_SYMBOL(dcbnl_ieee_notify);
1374
1375int dcbnl_cee_notify(struct net_device *dev, int event, int cmd,
Eric W. Biederman15e47302012-09-07 20:12:54 +00001376 u32 seq, u32 portid)
Shmulik Ravid5b7f7622011-07-05 06:16:25 +00001377{
Eric W. Biederman15e47302012-09-07 20:12:54 +00001378 return dcbnl_notify(dev, event, cmd, seq, portid, DCB_CAP_DCBX_VER_CEE);
Shmulik Ravid5b7f7622011-07-05 06:16:25 +00001379}
1380EXPORT_SYMBOL(dcbnl_cee_notify);
John Fastabend314b4772011-06-21 07:34:37 +00001381
1382/* Handle IEEE 802.1Qaz SET commands. If any requested operation can not
1383 * be completed the entire msg is aborted and error value is returned.
1384 * No attempt is made to reconcile the case where only part of the
1385 * cmd can be completed.
1386 */
Thomas Graf7be99412012-06-13 02:54:55 +00001387static int dcbnl_ieee_set(struct net_device *netdev, struct nlmsghdr *nlh,
1388 u32 seq, struct nlattr **tb, struct sk_buff *skb)
John Fastabend314b4772011-06-21 07:34:37 +00001389{
1390 const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
1391 struct nlattr *ieee[DCB_ATTR_IEEE_MAX + 1];
Thomas Graf3d1f4862012-06-13 02:54:58 +00001392 int err;
John Fastabend314b4772011-06-21 07:34:37 +00001393
1394 if (!ops)
Thomas Graf3d1f4862012-06-13 02:54:58 +00001395 return -EOPNOTSUPP;
John Fastabend314b4772011-06-21 07:34:37 +00001396
John Fastabend4003b652011-06-21 07:35:04 +00001397 if (!tb[DCB_ATTR_IEEE])
1398 return -EINVAL;
1399
John Fastabend314b4772011-06-21 07:34:37 +00001400 err = nla_parse_nested(ieee, DCB_ATTR_IEEE_MAX,
1401 tb[DCB_ATTR_IEEE], dcbnl_ieee_policy);
1402 if (err)
1403 return err;
1404
1405 if (ieee[DCB_ATTR_IEEE_ETS] && ops->ieee_setets) {
1406 struct ieee_ets *ets = nla_data(ieee[DCB_ATTR_IEEE_ETS]);
1407 err = ops->ieee_setets(netdev, ets);
1408 if (err)
1409 goto err;
1410 }
1411
Amir Vadai08f10af2012-04-04 21:33:30 +00001412 if (ieee[DCB_ATTR_IEEE_MAXRATE] && ops->ieee_setmaxrate) {
1413 struct ieee_maxrate *maxrate =
1414 nla_data(ieee[DCB_ATTR_IEEE_MAXRATE]);
1415 err = ops->ieee_setmaxrate(netdev, maxrate);
1416 if (err)
1417 goto err;
1418 }
1419
John Fastabend314b4772011-06-21 07:34:37 +00001420 if (ieee[DCB_ATTR_IEEE_PFC] && ops->ieee_setpfc) {
1421 struct ieee_pfc *pfc = nla_data(ieee[DCB_ATTR_IEEE_PFC]);
1422 err = ops->ieee_setpfc(netdev, pfc);
1423 if (err)
1424 goto err;
1425 }
1426
1427 if (ieee[DCB_ATTR_IEEE_APP_TABLE]) {
1428 struct nlattr *attr;
1429 int rem;
1430
1431 nla_for_each_nested(attr, ieee[DCB_ATTR_IEEE_APP_TABLE], rem) {
1432 struct dcb_app *app_data;
1433 if (nla_type(attr) != DCB_ATTR_IEEE_APP)
1434 continue;
1435 app_data = nla_data(attr);
1436 if (ops->ieee_setapp)
1437 err = ops->ieee_setapp(netdev, app_data);
1438 else
John Fastabendb6db2172011-06-21 07:34:42 +00001439 err = dcb_ieee_setapp(netdev, app_data);
John Fastabend314b4772011-06-21 07:34:37 +00001440 if (err)
1441 goto err;
1442 }
1443 }
1444
1445err:
Thomas Graf7be99412012-06-13 02:54:55 +00001446 err = nla_put_u8(skb, DCB_ATTR_IEEE, err);
Shmulik Ravid5b7f7622011-07-05 06:16:25 +00001447 dcbnl_ieee_notify(netdev, RTM_SETDCB, DCB_CMD_IEEE_SET, seq, 0);
John Fastabend314b4772011-06-21 07:34:37 +00001448 return err;
1449}
1450
Thomas Graf7be99412012-06-13 02:54:55 +00001451static int dcbnl_ieee_get(struct net_device *netdev, struct nlmsghdr *nlh,
1452 u32 seq, struct nlattr **tb, struct sk_buff *skb)
John Fastabend314b4772011-06-21 07:34:37 +00001453{
John Fastabend314b4772011-06-21 07:34:37 +00001454 const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
John Fastabend314b4772011-06-21 07:34:37 +00001455
1456 if (!ops)
1457 return -EOPNOTSUPP;
1458
Thomas Graf7be99412012-06-13 02:54:55 +00001459 return dcbnl_ieee_fill(skb, netdev);
John Fastabend314b4772011-06-21 07:34:37 +00001460}
John Fastabendf9ae7e42011-06-21 07:34:48 +00001461
Thomas Graf7be99412012-06-13 02:54:55 +00001462static int dcbnl_ieee_del(struct net_device *netdev, struct nlmsghdr *nlh,
1463 u32 seq, struct nlattr **tb, struct sk_buff *skb)
John Fastabendf9ae7e42011-06-21 07:34:48 +00001464{
1465 const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
1466 struct nlattr *ieee[DCB_ATTR_IEEE_MAX + 1];
Thomas Graf3d1f4862012-06-13 02:54:58 +00001467 int err;
John Fastabendf9ae7e42011-06-21 07:34:48 +00001468
1469 if (!ops)
1470 return -EOPNOTSUPP;
1471
1472 if (!tb[DCB_ATTR_IEEE])
1473 return -EINVAL;
1474
1475 err = nla_parse_nested(ieee, DCB_ATTR_IEEE_MAX,
1476 tb[DCB_ATTR_IEEE], dcbnl_ieee_policy);
1477 if (err)
1478 return err;
1479
1480 if (ieee[DCB_ATTR_IEEE_APP_TABLE]) {
1481 struct nlattr *attr;
1482 int rem;
1483
1484 nla_for_each_nested(attr, ieee[DCB_ATTR_IEEE_APP_TABLE], rem) {
1485 struct dcb_app *app_data;
1486
1487 if (nla_type(attr) != DCB_ATTR_IEEE_APP)
1488 continue;
1489 app_data = nla_data(attr);
1490 if (ops->ieee_delapp)
1491 err = ops->ieee_delapp(netdev, app_data);
1492 else
1493 err = dcb_ieee_delapp(netdev, app_data);
1494 if (err)
1495 goto err;
1496 }
1497 }
1498
1499err:
Thomas Graf7be99412012-06-13 02:54:55 +00001500 err = nla_put_u8(skb, DCB_ATTR_IEEE, err);
Shmulik Ravid5b7f7622011-07-05 06:16:25 +00001501 dcbnl_ieee_notify(netdev, RTM_SETDCB, DCB_CMD_IEEE_DEL, seq, 0);
John Fastabendf9ae7e42011-06-21 07:34:48 +00001502 return err;
1503}
1504
1505
Shmulik Ravid6241b622010-12-30 06:26:48 +00001506/* DCBX configuration */
Thomas Graf7be99412012-06-13 02:54:55 +00001507static int dcbnl_getdcbx(struct net_device *netdev, struct nlmsghdr *nlh,
1508 u32 seq, struct nlattr **tb, struct sk_buff *skb)
Shmulik Ravid6241b622010-12-30 06:26:48 +00001509{
Shmulik Ravid6241b622010-12-30 06:26:48 +00001510 if (!netdev->dcbnl_ops->getdcbx)
Shmulik Ravid7f891cf2011-01-03 08:04:59 +00001511 return -EOPNOTSUPP;
Shmulik Ravid6241b622010-12-30 06:26:48 +00001512
Thomas Graf7be99412012-06-13 02:54:55 +00001513 return nla_put_u8(skb, DCB_ATTR_DCBX,
1514 netdev->dcbnl_ops->getdcbx(netdev));
Shmulik Ravid6241b622010-12-30 06:26:48 +00001515}
1516
Thomas Graf7be99412012-06-13 02:54:55 +00001517static int dcbnl_setdcbx(struct net_device *netdev, struct nlmsghdr *nlh,
1518 u32 seq, struct nlattr **tb, struct sk_buff *skb)
Shmulik Ravid6241b622010-12-30 06:26:48 +00001519{
Shmulik Ravid6241b622010-12-30 06:26:48 +00001520 u8 value;
1521
Shmulik Ravid7f891cf2011-01-03 08:04:59 +00001522 if (!netdev->dcbnl_ops->setdcbx)
1523 return -EOPNOTSUPP;
1524
1525 if (!tb[DCB_ATTR_DCBX])
1526 return -EINVAL;
Shmulik Ravid6241b622010-12-30 06:26:48 +00001527
1528 value = nla_get_u8(tb[DCB_ATTR_DCBX]);
1529
Thomas Graf7be99412012-06-13 02:54:55 +00001530 return nla_put_u8(skb, DCB_ATTR_DCBX,
1531 netdev->dcbnl_ops->setdcbx(netdev, value));
Shmulik Ravid6241b622010-12-30 06:26:48 +00001532}
1533
Thomas Graf7be99412012-06-13 02:54:55 +00001534static int dcbnl_getfeatcfg(struct net_device *netdev, struct nlmsghdr *nlh,
1535 u32 seq, struct nlattr **tb, struct sk_buff *skb)
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001536{
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001537 struct nlattr *data[DCB_FEATCFG_ATTR_MAX + 1], *nest;
1538 u8 value;
Shmulik Ravid7f891cf2011-01-03 08:04:59 +00001539 int ret, i;
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001540 int getall = 0;
1541
Shmulik Ravid7f891cf2011-01-03 08:04:59 +00001542 if (!netdev->dcbnl_ops->getfeatcfg)
1543 return -EOPNOTSUPP;
1544
1545 if (!tb[DCB_ATTR_FEATCFG])
1546 return -EINVAL;
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001547
1548 ret = nla_parse_nested(data, DCB_FEATCFG_ATTR_MAX, tb[DCB_ATTR_FEATCFG],
1549 dcbnl_featcfg_nest);
Shmulik Ravid7f891cf2011-01-03 08:04:59 +00001550 if (ret)
Thomas Graf7be99412012-06-13 02:54:55 +00001551 return ret;
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001552
Thomas Graf7be99412012-06-13 02:54:55 +00001553 nest = nla_nest_start(skb, DCB_ATTR_FEATCFG);
1554 if (!nest)
1555 return -EMSGSIZE;
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001556
1557 if (data[DCB_FEATCFG_ATTR_ALL])
1558 getall = 1;
1559
1560 for (i = DCB_FEATCFG_ATTR_ALL+1; i <= DCB_FEATCFG_ATTR_MAX; i++) {
1561 if (!getall && !data[i])
1562 continue;
1563
1564 ret = netdev->dcbnl_ops->getfeatcfg(netdev, i, &value);
Shmulik Ravid7f891cf2011-01-03 08:04:59 +00001565 if (!ret)
Thomas Graf7be99412012-06-13 02:54:55 +00001566 ret = nla_put_u8(skb, i, value);
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001567
Shmulik Ravid7f891cf2011-01-03 08:04:59 +00001568 if (ret) {
Thomas Graf7be99412012-06-13 02:54:55 +00001569 nla_nest_cancel(skb, nest);
Shmulik Ravid7f891cf2011-01-03 08:04:59 +00001570 goto nla_put_failure;
1571 }
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001572 }
Thomas Graf7be99412012-06-13 02:54:55 +00001573 nla_nest_end(skb, nest);
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001574
Shmulik Ravid7f891cf2011-01-03 08:04:59 +00001575nla_put_failure:
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001576 return ret;
1577}
1578
Thomas Graf7be99412012-06-13 02:54:55 +00001579static int dcbnl_setfeatcfg(struct net_device *netdev, struct nlmsghdr *nlh,
1580 u32 seq, struct nlattr **tb, struct sk_buff *skb)
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001581{
1582 struct nlattr *data[DCB_FEATCFG_ATTR_MAX + 1];
Shmulik Ravid7f891cf2011-01-03 08:04:59 +00001583 int ret, i;
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001584 u8 value;
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001585
Shmulik Ravid7f891cf2011-01-03 08:04:59 +00001586 if (!netdev->dcbnl_ops->setfeatcfg)
1587 return -ENOTSUPP;
1588
1589 if (!tb[DCB_ATTR_FEATCFG])
1590 return -EINVAL;
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001591
1592 ret = nla_parse_nested(data, DCB_FEATCFG_ATTR_MAX, tb[DCB_ATTR_FEATCFG],
1593 dcbnl_featcfg_nest);
1594
Shmulik Ravid7f891cf2011-01-03 08:04:59 +00001595 if (ret)
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001596 goto err;
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001597
1598 for (i = DCB_FEATCFG_ATTR_ALL+1; i <= DCB_FEATCFG_ATTR_MAX; i++) {
1599 if (data[i] == NULL)
1600 continue;
1601
1602 value = nla_get_u8(data[i]);
1603
1604 ret = netdev->dcbnl_ops->setfeatcfg(netdev, i, value);
1605
1606 if (ret)
Shmulik Ravid7f891cf2011-01-03 08:04:59 +00001607 goto err;
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001608 }
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001609err:
Thomas Graf7be99412012-06-13 02:54:55 +00001610 ret = nla_put_u8(skb, DCB_ATTR_FEATCFG, ret);
Shmulik Ravid7f891cf2011-01-03 08:04:59 +00001611
Shmulik Ravidea45fe42010-12-30 06:26:55 +00001612 return ret;
1613}
1614
Shmulik Raviddc6ed1d2011-02-27 05:04:38 +00001615/* Handle CEE DCBX GET commands. */
Thomas Graf7be99412012-06-13 02:54:55 +00001616static int dcbnl_cee_get(struct net_device *netdev, struct nlmsghdr *nlh,
1617 u32 seq, struct nlattr **tb, struct sk_buff *skb)
Shmulik Raviddc6ed1d2011-02-27 05:04:38 +00001618{
Shmulik Raviddc6ed1d2011-02-27 05:04:38 +00001619 const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
Shmulik Raviddc6ed1d2011-02-27 05:04:38 +00001620
1621 if (!ops)
1622 return -EOPNOTSUPP;
1623
Thomas Graf7be99412012-06-13 02:54:55 +00001624 return dcbnl_cee_fill(skb, netdev);
Shmulik Raviddc6ed1d2011-02-27 05:04:38 +00001625}
1626
Thomas Graf33a03aa2012-06-13 02:54:54 +00001627struct reply_func {
1628 /* reply netlink message type */
1629 int type;
1630
1631 /* function to fill message contents */
1632 int (*cb)(struct net_device *, struct nlmsghdr *, u32,
1633 struct nlattr **, struct sk_buff *);
1634};
1635
1636static const struct reply_func reply_funcs[DCB_CMD_MAX+1] = {
Thomas Graf7be99412012-06-13 02:54:55 +00001637 [DCB_CMD_GSTATE] = { RTM_GETDCB, dcbnl_getstate },
1638 [DCB_CMD_SSTATE] = { RTM_SETDCB, dcbnl_setstate },
1639 [DCB_CMD_PFC_GCFG] = { RTM_GETDCB, dcbnl_getpfccfg },
1640 [DCB_CMD_PFC_SCFG] = { RTM_SETDCB, dcbnl_setpfccfg },
1641 [DCB_CMD_GPERM_HWADDR] = { RTM_GETDCB, dcbnl_getperm_hwaddr },
1642 [DCB_CMD_GCAP] = { RTM_GETDCB, dcbnl_getcap },
1643 [DCB_CMD_GNUMTCS] = { RTM_GETDCB, dcbnl_getnumtcs },
1644 [DCB_CMD_SNUMTCS] = { RTM_SETDCB, dcbnl_setnumtcs },
1645 [DCB_CMD_PFC_GSTATE] = { RTM_GETDCB, dcbnl_getpfcstate },
1646 [DCB_CMD_PFC_SSTATE] = { RTM_SETDCB, dcbnl_setpfcstate },
1647 [DCB_CMD_GAPP] = { RTM_GETDCB, dcbnl_getapp },
1648 [DCB_CMD_SAPP] = { RTM_SETDCB, dcbnl_setapp },
1649 [DCB_CMD_PGTX_GCFG] = { RTM_GETDCB, dcbnl_pgtx_getcfg },
1650 [DCB_CMD_PGTX_SCFG] = { RTM_SETDCB, dcbnl_pgtx_setcfg },
1651 [DCB_CMD_PGRX_GCFG] = { RTM_GETDCB, dcbnl_pgrx_getcfg },
1652 [DCB_CMD_PGRX_SCFG] = { RTM_SETDCB, dcbnl_pgrx_setcfg },
1653 [DCB_CMD_SET_ALL] = { RTM_SETDCB, dcbnl_setall },
1654 [DCB_CMD_BCN_GCFG] = { RTM_GETDCB, dcbnl_bcn_getcfg },
1655 [DCB_CMD_BCN_SCFG] = { RTM_SETDCB, dcbnl_bcn_setcfg },
1656 [DCB_CMD_IEEE_GET] = { RTM_GETDCB, dcbnl_ieee_get },
1657 [DCB_CMD_IEEE_SET] = { RTM_SETDCB, dcbnl_ieee_set },
1658 [DCB_CMD_IEEE_DEL] = { RTM_SETDCB, dcbnl_ieee_del },
1659 [DCB_CMD_GDCBX] = { RTM_GETDCB, dcbnl_getdcbx },
1660 [DCB_CMD_SDCBX] = { RTM_SETDCB, dcbnl_setdcbx },
1661 [DCB_CMD_GFEATCFG] = { RTM_GETDCB, dcbnl_getfeatcfg },
1662 [DCB_CMD_SFEATCFG] = { RTM_SETDCB, dcbnl_setfeatcfg },
1663 [DCB_CMD_CEE_GET] = { RTM_GETDCB, dcbnl_cee_get },
Thomas Graf33a03aa2012-06-13 02:54:54 +00001664};
1665
Thomas Graf661d2962013-03-21 07:45:29 +00001666static int dcb_doit(struct sk_buff *skb, struct nlmsghdr *nlh)
Alexander Duyck2f90b862008-11-20 20:52:10 -08001667{
1668 struct net *net = sock_net(skb->sk);
1669 struct net_device *netdev;
Thomas Graf7a282bc32012-06-13 02:55:01 +00001670 struct dcbmsg *dcb = nlmsg_data(nlh);
Alexander Duyck2f90b862008-11-20 20:52:10 -08001671 struct nlattr *tb[DCB_ATTR_MAX + 1];
Eric W. Biederman15e47302012-09-07 20:12:54 +00001672 u32 portid = skb ? NETLINK_CB(skb).portid : 0;
Alexander Duyck2f90b862008-11-20 20:52:10 -08001673 int ret = -EINVAL;
Thomas Graf33a03aa2012-06-13 02:54:54 +00001674 struct sk_buff *reply_skb;
Thomas Graf39912f92012-06-13 22:34:03 +00001675 struct nlmsghdr *reply_nlh = NULL;
Thomas Graf33a03aa2012-06-13 02:54:54 +00001676 const struct reply_func *fn;
Alexander Duyck2f90b862008-11-20 20:52:10 -08001677
Eric W. Biederman90f62cf2014-04-23 14:29:27 -07001678 if ((nlh->nlmsg_type == RTM_SETDCB) && !netlink_capable(skb, CAP_NET_ADMIN))
Eric W. Biedermandfc47ef2012-11-16 03:03:00 +00001679 return -EPERM;
1680
Alexander Duyck2f90b862008-11-20 20:52:10 -08001681 ret = nlmsg_parse(nlh, sizeof(*dcb), tb, DCB_ATTR_MAX,
1682 dcbnl_rtnl_policy);
1683 if (ret < 0)
1684 return ret;
1685
Thomas Graf33a03aa2012-06-13 02:54:54 +00001686 if (dcb->cmd > DCB_CMD_MAX)
1687 return -EINVAL;
1688
1689 /* check if a reply function has been defined for the command */
1690 fn = &reply_funcs[dcb->cmd];
1691 if (!fn->cb)
1692 return -EOPNOTSUPP;
1693
Alexander Duyck2f90b862008-11-20 20:52:10 -08001694 if (!tb[DCB_ATTR_IFNAME])
1695 return -EINVAL;
1696
Ying Xued9ac62b2014-01-15 10:23:39 +08001697 netdev = __dev_get_by_name(net, nla_data(tb[DCB_ATTR_IFNAME]));
Alexander Duyck2f90b862008-11-20 20:52:10 -08001698 if (!netdev)
Thomas Graf3d1f4862012-06-13 02:54:58 +00001699 return -ENODEV;
Alexander Duyck2f90b862008-11-20 20:52:10 -08001700
Ying Xued9ac62b2014-01-15 10:23:39 +08001701 if (!netdev->dcbnl_ops)
1702 return -EOPNOTSUPP;
Alexander Duyck2f90b862008-11-20 20:52:10 -08001703
Eric W. Biederman15e47302012-09-07 20:12:54 +00001704 reply_skb = dcbnl_newmsg(fn->type, dcb->cmd, portid, nlh->nlmsg_seq,
Thomas Graf33a03aa2012-06-13 02:54:54 +00001705 nlh->nlmsg_flags, &reply_nlh);
Ying Xued9ac62b2014-01-15 10:23:39 +08001706 if (!reply_skb)
1707 return -ENOBUFS;
Thomas Graf33a03aa2012-06-13 02:54:54 +00001708
1709 ret = fn->cb(netdev, nlh, nlh->nlmsg_seq, tb, reply_skb);
1710 if (ret < 0) {
1711 nlmsg_free(reply_skb);
1712 goto out;
1713 }
1714
1715 nlmsg_end(reply_skb, reply_nlh);
1716
John Fastabend7c77ab22012-12-09 20:48:13 +00001717 ret = rtnl_unicast(reply_skb, net, portid);
Alexander Duyck2f90b862008-11-20 20:52:10 -08001718out:
Alexander Duyck2f90b862008-11-20 20:52:10 -08001719 return ret;
1720}
1721
Thomas Graf716b31a2012-06-13 02:54:59 +00001722static struct dcb_app_type *dcb_app_lookup(const struct dcb_app *app,
1723 int ifindex, int prio)
1724{
1725 struct dcb_app_type *itr;
1726
1727 list_for_each_entry(itr, &dcb_app_list, list) {
1728 if (itr->app.selector == app->selector &&
1729 itr->app.protocol == app->protocol &&
1730 itr->ifindex == ifindex &&
1731 (!prio || itr->app.priority == prio))
1732 return itr;
1733 }
1734
1735 return NULL;
1736}
1737
Thomas Graf4e4f2f62012-06-13 02:55:00 +00001738static int dcb_app_add(const struct dcb_app *app, int ifindex)
1739{
1740 struct dcb_app_type *entry;
1741
1742 entry = kmalloc(sizeof(*entry), GFP_ATOMIC);
1743 if (!entry)
1744 return -ENOMEM;
1745
1746 memcpy(&entry->app, app, sizeof(*app));
1747 entry->ifindex = ifindex;
1748 list_add(&entry->list, &dcb_app_list);
1749
1750 return 0;
1751}
1752
John Fastabend9ab933a2010-12-30 09:26:31 +00001753/**
1754 * dcb_getapp - retrieve the DCBX application user priority
1755 *
1756 * On success returns a non-zero 802.1p user priority bitmap
1757 * otherwise returns 0 as the invalid user priority bitmap to
1758 * indicate an error.
1759 */
1760u8 dcb_getapp(struct net_device *dev, struct dcb_app *app)
1761{
1762 struct dcb_app_type *itr;
1763 u8 prio = 0;
1764
Anish Bhatt52cff742014-11-14 16:38:31 -08001765 spin_lock_bh(&dcb_lock);
Thomas Graf716b31a2012-06-13 02:54:59 +00001766 if ((itr = dcb_app_lookup(app, dev->ifindex, 0)))
1767 prio = itr->app.priority;
Anish Bhatt52cff742014-11-14 16:38:31 -08001768 spin_unlock_bh(&dcb_lock);
John Fastabend9ab933a2010-12-30 09:26:31 +00001769
1770 return prio;
1771}
1772EXPORT_SYMBOL(dcb_getapp);
1773
1774/**
John Fastabendb6db2172011-06-21 07:34:42 +00001775 * dcb_setapp - add CEE dcb application data to app list
John Fastabend9ab933a2010-12-30 09:26:31 +00001776 *
John Fastabendb6db2172011-06-21 07:34:42 +00001777 * Priority 0 is an invalid priority in CEE spec. This routine
1778 * removes applications from the app list if the priority is
Anish Bhatt16eecd92014-07-28 20:57:07 -07001779 * set to zero. Priority is expected to be 8-bit 802.1p user priority bitmap
John Fastabend9ab933a2010-12-30 09:26:31 +00001780 */
John Fastabendab6baf92011-06-21 07:34:58 +00001781int dcb_setapp(struct net_device *dev, struct dcb_app *new)
John Fastabend9ab933a2010-12-30 09:26:31 +00001782{
1783 struct dcb_app_type *itr;
John Fastabend7ec79272011-01-31 12:00:59 +00001784 struct dcb_app_type event;
Thomas Graf4e4f2f62012-06-13 02:55:00 +00001785 int err = 0;
John Fastabend7ec79272011-01-31 12:00:59 +00001786
Mark Rustade290ed82011-10-06 08:52:33 +00001787 event.ifindex = dev->ifindex;
John Fastabend7ec79272011-01-31 12:00:59 +00001788 memcpy(&event.app, new, sizeof(event.app));
John Fastabend6bd0e1c2011-10-06 08:52:38 +00001789 if (dev->dcbnl_ops->getdcbx)
1790 event.dcbx = dev->dcbnl_ops->getdcbx(dev);
John Fastabend9ab933a2010-12-30 09:26:31 +00001791
Anish Bhatt52cff742014-11-14 16:38:31 -08001792 spin_lock_bh(&dcb_lock);
John Fastabend9ab933a2010-12-30 09:26:31 +00001793 /* Search for existing match and replace */
Thomas Graf716b31a2012-06-13 02:54:59 +00001794 if ((itr = dcb_app_lookup(new, dev->ifindex, 0))) {
1795 if (new->priority)
1796 itr->app.priority = new->priority;
1797 else {
1798 list_del(&itr->list);
1799 kfree(itr);
John Fastabend9ab933a2010-12-30 09:26:31 +00001800 }
Thomas Graf716b31a2012-06-13 02:54:59 +00001801 goto out;
John Fastabend9ab933a2010-12-30 09:26:31 +00001802 }
1803 /* App type does not exist add new application type */
Thomas Graf4e4f2f62012-06-13 02:55:00 +00001804 if (new->priority)
1805 err = dcb_app_add(new, dev->ifindex);
John Fastabend9ab933a2010-12-30 09:26:31 +00001806out:
Anish Bhatt52cff742014-11-14 16:38:31 -08001807 spin_unlock_bh(&dcb_lock);
Thomas Graf4e4f2f62012-06-13 02:55:00 +00001808 if (!err)
1809 call_dcbevent_notifiers(DCB_APP_EVENT, &event);
1810 return err;
John Fastabend9ab933a2010-12-30 09:26:31 +00001811}
1812EXPORT_SYMBOL(dcb_setapp);
1813
John Fastabendb6db2172011-06-21 07:34:42 +00001814/**
John Fastabenda364c8c2011-06-21 07:34:53 +00001815 * dcb_ieee_getapp_mask - retrieve the IEEE DCB application priority
1816 *
1817 * Helper routine which on success returns a non-zero 802.1Qaz user
1818 * priority bitmap otherwise returns 0 to indicate the dcb_app was
1819 * not found in APP list.
1820 */
1821u8 dcb_ieee_getapp_mask(struct net_device *dev, struct dcb_app *app)
1822{
1823 struct dcb_app_type *itr;
1824 u8 prio = 0;
1825
Anish Bhatt52cff742014-11-14 16:38:31 -08001826 spin_lock_bh(&dcb_lock);
Thomas Graf716b31a2012-06-13 02:54:59 +00001827 if ((itr = dcb_app_lookup(app, dev->ifindex, 0)))
1828 prio |= 1 << itr->app.priority;
Anish Bhatt52cff742014-11-14 16:38:31 -08001829 spin_unlock_bh(&dcb_lock);
John Fastabenda364c8c2011-06-21 07:34:53 +00001830
1831 return prio;
1832}
1833EXPORT_SYMBOL(dcb_ieee_getapp_mask);
1834
1835/**
John Fastabendb6db2172011-06-21 07:34:42 +00001836 * dcb_ieee_setapp - add IEEE dcb application data to app list
1837 *
1838 * This adds Application data to the list. Multiple application
1839 * entries may exists for the same selector and protocol as long
Anish Bhatt16eecd92014-07-28 20:57:07 -07001840 * as the priorities are different. Priority is expected to be a
1841 * 3-bit unsigned integer
John Fastabendb6db2172011-06-21 07:34:42 +00001842 */
1843int dcb_ieee_setapp(struct net_device *dev, struct dcb_app *new)
1844{
John Fastabendb6db2172011-06-21 07:34:42 +00001845 struct dcb_app_type event;
1846 int err = 0;
1847
Mark Rustade290ed82011-10-06 08:52:33 +00001848 event.ifindex = dev->ifindex;
John Fastabendb6db2172011-06-21 07:34:42 +00001849 memcpy(&event.app, new, sizeof(event.app));
John Fastabend6bd0e1c2011-10-06 08:52:38 +00001850 if (dev->dcbnl_ops->getdcbx)
1851 event.dcbx = dev->dcbnl_ops->getdcbx(dev);
John Fastabendb6db2172011-06-21 07:34:42 +00001852
Anish Bhatt52cff742014-11-14 16:38:31 -08001853 spin_lock_bh(&dcb_lock);
John Fastabendb6db2172011-06-21 07:34:42 +00001854 /* Search for existing match and abort if found */
Thomas Graf716b31a2012-06-13 02:54:59 +00001855 if (dcb_app_lookup(new, dev->ifindex, new->priority)) {
1856 err = -EEXIST;
1857 goto out;
John Fastabendb6db2172011-06-21 07:34:42 +00001858 }
1859
Thomas Graf4e4f2f62012-06-13 02:55:00 +00001860 err = dcb_app_add(new, dev->ifindex);
John Fastabendb6db2172011-06-21 07:34:42 +00001861out:
Anish Bhatt52cff742014-11-14 16:38:31 -08001862 spin_unlock_bh(&dcb_lock);
John Fastabendb6db2172011-06-21 07:34:42 +00001863 if (!err)
1864 call_dcbevent_notifiers(DCB_APP_EVENT, &event);
1865 return err;
1866}
1867EXPORT_SYMBOL(dcb_ieee_setapp);
1868
John Fastabendf9ae7e42011-06-21 07:34:48 +00001869/**
1870 * dcb_ieee_delapp - delete IEEE dcb application data from list
1871 *
1872 * This removes a matching APP data from the APP list
1873 */
1874int dcb_ieee_delapp(struct net_device *dev, struct dcb_app *del)
1875{
1876 struct dcb_app_type *itr;
1877 struct dcb_app_type event;
1878 int err = -ENOENT;
1879
Mark Rustade290ed82011-10-06 08:52:33 +00001880 event.ifindex = dev->ifindex;
John Fastabendf9ae7e42011-06-21 07:34:48 +00001881 memcpy(&event.app, del, sizeof(event.app));
John Fastabend6bd0e1c2011-10-06 08:52:38 +00001882 if (dev->dcbnl_ops->getdcbx)
1883 event.dcbx = dev->dcbnl_ops->getdcbx(dev);
John Fastabendf9ae7e42011-06-21 07:34:48 +00001884
Anish Bhatt52cff742014-11-14 16:38:31 -08001885 spin_lock_bh(&dcb_lock);
John Fastabendf9ae7e42011-06-21 07:34:48 +00001886 /* Search for existing match and remove it. */
Thomas Graf716b31a2012-06-13 02:54:59 +00001887 if ((itr = dcb_app_lookup(del, dev->ifindex, del->priority))) {
1888 list_del(&itr->list);
1889 kfree(itr);
1890 err = 0;
John Fastabendf9ae7e42011-06-21 07:34:48 +00001891 }
1892
Anish Bhatt52cff742014-11-14 16:38:31 -08001893 spin_unlock_bh(&dcb_lock);
John Fastabendf9ae7e42011-06-21 07:34:48 +00001894 if (!err)
1895 call_dcbevent_notifiers(DCB_APP_EVENT, &event);
1896 return err;
1897}
1898EXPORT_SYMBOL(dcb_ieee_delapp);
1899
Shmulik Ravid7c14c3f2010-12-30 06:27:10 +00001900static void dcb_flushapp(void)
John Fastabend9ab933a2010-12-30 09:26:31 +00001901{
1902 struct dcb_app_type *app;
Dan Carpenter2a8fe002011-01-04 21:03:44 +00001903 struct dcb_app_type *tmp;
John Fastabend9ab933a2010-12-30 09:26:31 +00001904
Anish Bhatt52cff742014-11-14 16:38:31 -08001905 spin_lock_bh(&dcb_lock);
Dan Carpenter2a8fe002011-01-04 21:03:44 +00001906 list_for_each_entry_safe(app, tmp, &dcb_app_list, list) {
John Fastabend9ab933a2010-12-30 09:26:31 +00001907 list_del(&app->list);
1908 kfree(app);
1909 }
Anish Bhatt52cff742014-11-14 16:38:31 -08001910 spin_unlock_bh(&dcb_lock);
John Fastabend9ab933a2010-12-30 09:26:31 +00001911}
1912
Alexander Duyck2f90b862008-11-20 20:52:10 -08001913static int __init dcbnl_init(void)
1914{
John Fastabend9ab933a2010-12-30 09:26:31 +00001915 INIT_LIST_HEAD(&dcb_app_list);
1916
Greg Rosec7ac8672011-06-10 01:27:09 +00001917 rtnl_register(PF_UNSPEC, RTM_GETDCB, dcb_doit, NULL, NULL);
1918 rtnl_register(PF_UNSPEC, RTM_SETDCB, dcb_doit, NULL, NULL);
Alexander Duyck2f90b862008-11-20 20:52:10 -08001919
1920 return 0;
1921}
1922module_init(dcbnl_init);
1923
1924static void __exit dcbnl_exit(void)
1925{
1926 rtnl_unregister(PF_UNSPEC, RTM_GETDCB);
1927 rtnl_unregister(PF_UNSPEC, RTM_SETDCB);
John Fastabend9ab933a2010-12-30 09:26:31 +00001928 dcb_flushapp();
Alexander Duyck2f90b862008-11-20 20:52:10 -08001929}
1930module_exit(dcbnl_exit);