2 * Copyright (c) 2008-2011, Intel Corporation.
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.
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
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.
17 * Author: Lucy Liu <lucy.liu@intel.com>
20 #include <linux/netdevice.h>
21 #include <linux/netlink.h>
22 #include <linux/slab.h>
23 #include <net/netlink.h>
24 #include <net/rtnetlink.h>
25 #include <linux/dcbnl.h>
26 #include <net/dcbevent.h>
27 #include <linux/rtnetlink.h>
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:
36 * Enhanced Transmission Selection (aka Priority Grouping [PG]) - provides a
37 * framework for assigning bandwidth guarantees to traffic classes.
39 * Priority-based Flow Control (PFC) - provides a flow control mechanism which
40 * can work independently for each 802.1p priority.
42 * Congestion Notification - provides a mechanism for end-to-end congestion
43 * control for protocols which do not have built-in congestion management.
45 * More information about the emerging standards for these Ethernet features
46 * can be found at: http://www.ieee802.org/1/pages/dcbridges.html
48 * This file implements an rtnetlink interface to allow configuration of DCB
49 * features for capable devices.
52 MODULE_AUTHOR("Lucy Liu, <lucy.liu@intel.com>");
53 MODULE_DESCRIPTION("Data Center Bridging netlink interface");
54 MODULE_LICENSE("GPL");
56 /**************** DCB attribute policies *************************************/
58 /* DCB netlink attributes policy */
59 static const struct nla_policy dcbnl_rtnl_policy[DCB_ATTR_MAX + 1] = {
60 [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},
65 [DCB_ATTR_PERM_HWADDR] = {.type = NLA_FLAG},
66 [DCB_ATTR_CAP] = {.type = NLA_NESTED},
67 [DCB_ATTR_PFC_STATE] = {.type = NLA_U8},
68 [DCB_ATTR_BCN] = {.type = NLA_NESTED},
69 [DCB_ATTR_APP] = {.type = NLA_NESTED},
70 [DCB_ATTR_IEEE] = {.type = NLA_NESTED},
71 [DCB_ATTR_DCBX] = {.type = NLA_U8},
72 [DCB_ATTR_FEATCFG] = {.type = NLA_NESTED},
75 /* DCB priority flow control to User Priority nested attributes */
76 static const struct nla_policy dcbnl_pfc_up_nest[DCB_PFC_UP_ATTR_MAX + 1] = {
77 [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},
88 /* DCB priority grouping nested attributes */
89 static const struct nla_policy dcbnl_pg_nest[DCB_PG_ATTR_MAX + 1] = {
90 [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},
110 /* DCB traffic class nested attributes. */
111 static const struct nla_policy dcbnl_tc_param_nest[DCB_TC_ATTR_PARAM_MAX + 1] = {
112 [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},
119 /* DCB capabilities nested attributes. */
120 static const struct nla_policy dcbnl_cap_nest[DCB_CAP_ATTR_MAX + 1] = {
121 [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},
129 [DCB_CAP_ATTR_DCBX] = {.type = NLA_U8},
132 /* DCB capabilities nested attributes. */
133 static const struct nla_policy dcbnl_numtcs_nest[DCB_NUMTCS_ATTR_MAX + 1] = {
134 [DCB_NUMTCS_ATTR_ALL] = {.type = NLA_FLAG},
135 [DCB_NUMTCS_ATTR_PG] = {.type = NLA_U8},
136 [DCB_NUMTCS_ATTR_PFC] = {.type = NLA_U8},
139 /* DCB BCN nested attributes. */
140 static const struct nla_policy dcbnl_bcn_nest[DCB_BCN_ATTR_MAX + 1] = {
141 [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},
150 [DCB_BCN_ATTR_BCNA_0] = {.type = NLA_U32},
151 [DCB_BCN_ATTR_BCNA_1] = {.type = NLA_U32},
152 [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},
168 /* DCB APP nested attributes. */
169 static const struct nla_policy dcbnl_app_nest[DCB_APP_ATTR_MAX + 1] = {
170 [DCB_APP_ATTR_IDTYPE] = {.type = NLA_U8},
171 [DCB_APP_ATTR_ID] = {.type = NLA_U16},
172 [DCB_APP_ATTR_PRIORITY] = {.type = NLA_U8},
175 /* IEEE 802.1Qaz nested attributes. */
176 static 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},
182 static const struct nla_policy dcbnl_ieee_app[DCB_ATTR_IEEE_APP_MAX + 1] = {
183 [DCB_ATTR_IEEE_APP] = {.len = sizeof(struct dcb_app)},
186 /* DCB number of traffic classes nested attributes. */
187 static 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},
194 static LIST_HEAD(dcb_app_list);
195 static DEFINE_SPINLOCK(dcb_lock);
197 /* standard netlink reply call */
198 static int dcbnl_reply(u8 value, u8 event, u8 cmd, u8 attr, u32 pid,
201 struct sk_buff *dcbnl_skb;
203 struct nlmsghdr *nlh;
206 dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
210 nlh = NLMSG_NEW(dcbnl_skb, pid, seq, event, sizeof(*dcb), flags);
212 dcb = NLMSG_DATA(nlh);
213 dcb->dcb_family = AF_UNSPEC;
217 ret = nla_put_u8(dcbnl_skb, attr, value);
221 /* end the message, assign the nlmsg_len. */
222 nlmsg_end(dcbnl_skb, nlh);
223 ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
230 kfree_skb(dcbnl_skb);
234 static int dcbnl_getstate(struct net_device *netdev, struct nlattr **tb,
235 u32 pid, u32 seq, u16 flags)
239 /* if (!tb[DCB_ATTR_STATE] || !netdev->dcbnl_ops->getstate) */
240 if (!netdev->dcbnl_ops->getstate)
243 ret = dcbnl_reply(netdev->dcbnl_ops->getstate(netdev), RTM_GETDCB,
244 DCB_CMD_GSTATE, DCB_ATTR_STATE, pid, seq, flags);
249 static int dcbnl_getpfccfg(struct net_device *netdev, struct nlattr **tb,
250 u32 pid, u32 seq, u16 flags)
252 struct sk_buff *dcbnl_skb;
253 struct nlmsghdr *nlh;
255 struct nlattr *data[DCB_PFC_UP_ATTR_MAX + 1], *nest;
261 if (!tb[DCB_ATTR_PFC_CFG] || !netdev->dcbnl_ops->getpfccfg)
264 ret = nla_parse_nested(data, DCB_PFC_UP_ATTR_MAX,
265 tb[DCB_ATTR_PFC_CFG],
270 dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
274 nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
276 dcb = NLMSG_DATA(nlh);
277 dcb->dcb_family = AF_UNSPEC;
278 dcb->cmd = DCB_CMD_PFC_GCFG;
280 nest = nla_nest_start(dcbnl_skb, DCB_ATTR_PFC_CFG);
284 if (data[DCB_PFC_UP_ATTR_ALL])
287 for (i = DCB_PFC_UP_ATTR_0; i <= DCB_PFC_UP_ATTR_7; i++) {
288 if (!getall && !data[i])
291 netdev->dcbnl_ops->getpfccfg(netdev, i - DCB_PFC_UP_ATTR_0,
293 ret = nla_put_u8(dcbnl_skb, i, value);
296 nla_nest_cancel(dcbnl_skb, nest);
300 nla_nest_end(dcbnl_skb, nest);
302 nlmsg_end(dcbnl_skb, nlh);
304 ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
311 kfree_skb(dcbnl_skb);
316 static int dcbnl_getperm_hwaddr(struct net_device *netdev, struct nlattr **tb,
317 u32 pid, u32 seq, u16 flags)
319 struct sk_buff *dcbnl_skb;
320 struct nlmsghdr *nlh;
322 u8 perm_addr[MAX_ADDR_LEN];
325 if (!netdev->dcbnl_ops->getpermhwaddr)
328 dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
332 nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
334 dcb = NLMSG_DATA(nlh);
335 dcb->dcb_family = AF_UNSPEC;
336 dcb->cmd = DCB_CMD_GPERM_HWADDR;
338 netdev->dcbnl_ops->getpermhwaddr(netdev, perm_addr);
340 ret = nla_put(dcbnl_skb, DCB_ATTR_PERM_HWADDR, sizeof(perm_addr),
343 nlmsg_end(dcbnl_skb, nlh);
345 ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
352 kfree_skb(dcbnl_skb);
357 static int dcbnl_getcap(struct net_device *netdev, struct nlattr **tb,
358 u32 pid, u32 seq, u16 flags)
360 struct sk_buff *dcbnl_skb;
361 struct nlmsghdr *nlh;
363 struct nlattr *data[DCB_CAP_ATTR_MAX + 1], *nest;
369 if (!tb[DCB_ATTR_CAP] || !netdev->dcbnl_ops->getcap)
372 ret = nla_parse_nested(data, DCB_CAP_ATTR_MAX, tb[DCB_ATTR_CAP],
377 dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
381 nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
383 dcb = NLMSG_DATA(nlh);
384 dcb->dcb_family = AF_UNSPEC;
385 dcb->cmd = DCB_CMD_GCAP;
387 nest = nla_nest_start(dcbnl_skb, DCB_ATTR_CAP);
391 if (data[DCB_CAP_ATTR_ALL])
394 for (i = DCB_CAP_ATTR_ALL+1; i <= DCB_CAP_ATTR_MAX; i++) {
395 if (!getall && !data[i])
398 if (!netdev->dcbnl_ops->getcap(netdev, i, &value)) {
399 ret = nla_put_u8(dcbnl_skb, i, value);
402 nla_nest_cancel(dcbnl_skb, nest);
407 nla_nest_end(dcbnl_skb, nest);
409 nlmsg_end(dcbnl_skb, nlh);
411 ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
418 kfree_skb(dcbnl_skb);
423 static int dcbnl_getnumtcs(struct net_device *netdev, struct nlattr **tb,
424 u32 pid, u32 seq, u16 flags)
426 struct sk_buff *dcbnl_skb;
427 struct nlmsghdr *nlh;
429 struct nlattr *data[DCB_NUMTCS_ATTR_MAX + 1], *nest;
435 if (!tb[DCB_ATTR_NUMTCS] || !netdev->dcbnl_ops->getnumtcs)
438 ret = nla_parse_nested(data, DCB_NUMTCS_ATTR_MAX, tb[DCB_ATTR_NUMTCS],
445 dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
451 nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
453 dcb = NLMSG_DATA(nlh);
454 dcb->dcb_family = AF_UNSPEC;
455 dcb->cmd = DCB_CMD_GNUMTCS;
457 nest = nla_nest_start(dcbnl_skb, DCB_ATTR_NUMTCS);
463 if (data[DCB_NUMTCS_ATTR_ALL])
466 for (i = DCB_NUMTCS_ATTR_ALL+1; i <= DCB_NUMTCS_ATTR_MAX; i++) {
467 if (!getall && !data[i])
470 ret = netdev->dcbnl_ops->getnumtcs(netdev, i, &value);
472 ret = nla_put_u8(dcbnl_skb, i, value);
475 nla_nest_cancel(dcbnl_skb, nest);
483 nla_nest_end(dcbnl_skb, nest);
485 nlmsg_end(dcbnl_skb, nlh);
487 ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
496 kfree_skb(dcbnl_skb);
501 static int dcbnl_setnumtcs(struct net_device *netdev, struct nlattr **tb,
502 u32 pid, u32 seq, u16 flags)
504 struct nlattr *data[DCB_NUMTCS_ATTR_MAX + 1];
509 if (!tb[DCB_ATTR_NUMTCS] || !netdev->dcbnl_ops->setnumtcs)
512 ret = nla_parse_nested(data, DCB_NUMTCS_ATTR_MAX, tb[DCB_ATTR_NUMTCS],
520 for (i = DCB_NUMTCS_ATTR_ALL+1; i <= DCB_NUMTCS_ATTR_MAX; i++) {
524 value = nla_get_u8(data[i]);
526 ret = netdev->dcbnl_ops->setnumtcs(netdev, i, value);
533 ret = dcbnl_reply(!!ret, RTM_SETDCB, DCB_CMD_SNUMTCS,
534 DCB_ATTR_NUMTCS, pid, seq, flags);
540 static int dcbnl_getpfcstate(struct net_device *netdev, struct nlattr **tb,
541 u32 pid, u32 seq, u16 flags)
545 if (!netdev->dcbnl_ops->getpfcstate)
548 ret = dcbnl_reply(netdev->dcbnl_ops->getpfcstate(netdev), RTM_GETDCB,
549 DCB_CMD_PFC_GSTATE, DCB_ATTR_PFC_STATE,
555 static int dcbnl_setpfcstate(struct net_device *netdev, struct nlattr **tb,
556 u32 pid, u32 seq, u16 flags)
561 if (!tb[DCB_ATTR_PFC_STATE] || !netdev->dcbnl_ops->setpfcstate)
564 value = nla_get_u8(tb[DCB_ATTR_PFC_STATE]);
566 netdev->dcbnl_ops->setpfcstate(netdev, value);
568 ret = dcbnl_reply(0, RTM_SETDCB, DCB_CMD_PFC_SSTATE, DCB_ATTR_PFC_STATE,
574 static int dcbnl_getapp(struct net_device *netdev, struct nlattr **tb,
575 u32 pid, u32 seq, u16 flags)
577 struct sk_buff *dcbnl_skb;
578 struct nlmsghdr *nlh;
580 struct nlattr *app_nest;
581 struct nlattr *app_tb[DCB_APP_ATTR_MAX + 1];
586 if (!tb[DCB_ATTR_APP])
589 ret = nla_parse_nested(app_tb, DCB_APP_ATTR_MAX, tb[DCB_ATTR_APP],
595 /* all must be non-null */
596 if ((!app_tb[DCB_APP_ATTR_IDTYPE]) ||
597 (!app_tb[DCB_APP_ATTR_ID]))
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))
606 id = nla_get_u16(app_tb[DCB_APP_ATTR_ID]);
608 if (netdev->dcbnl_ops->getapp) {
609 up = netdev->dcbnl_ops->getapp(netdev, idtype, id);
611 struct dcb_app app = {
615 up = dcb_getapp(netdev, &app);
619 dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
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;
628 app_nest = nla_nest_start(dcbnl_skb, DCB_ATTR_APP);
632 ret = nla_put_u8(dcbnl_skb, DCB_APP_ATTR_IDTYPE, idtype);
636 ret = nla_put_u16(dcbnl_skb, DCB_APP_ATTR_ID, id);
640 ret = nla_put_u8(dcbnl_skb, DCB_APP_ATTR_PRIORITY, up);
644 nla_nest_end(dcbnl_skb, app_nest);
645 nlmsg_end(dcbnl_skb, nlh);
647 ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
654 nla_nest_cancel(dcbnl_skb, app_nest);
656 kfree_skb(dcbnl_skb);
661 static int dcbnl_setapp(struct net_device *netdev, struct nlattr **tb,
662 u32 pid, u32 seq, u16 flags)
664 int err, ret = -EINVAL;
667 struct nlattr *app_tb[DCB_APP_ATTR_MAX + 1];
669 if (!tb[DCB_ATTR_APP])
672 ret = nla_parse_nested(app_tb, DCB_APP_ATTR_MAX, tb[DCB_ATTR_APP],
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]))
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))
690 id = nla_get_u16(app_tb[DCB_APP_ATTR_ID]);
691 up = nla_get_u8(app_tb[DCB_APP_ATTR_PRIORITY]);
693 if (netdev->dcbnl_ops->setapp) {
694 err = netdev->dcbnl_ops->setapp(netdev, idtype, id, up);
697 app.selector = idtype;
700 err = dcb_setapp(netdev, &app);
703 ret = dcbnl_reply(err, RTM_SETDCB, DCB_CMD_SAPP, DCB_ATTR_APP,
709 static int __dcbnl_pg_getcfg(struct net_device *netdev, struct nlattr **tb,
710 u32 pid, u32 seq, u16 flags, int dir)
712 struct sk_buff *dcbnl_skb;
713 struct nlmsghdr *nlh;
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;
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)
730 ret = nla_parse_nested(pg_tb, DCB_PG_ATTR_MAX,
731 tb[DCB_ATTR_PG_CFG], dcbnl_pg_nest);
736 dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
740 nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
742 dcb = NLMSG_DATA(nlh);
743 dcb->dcb_family = AF_UNSPEC;
744 dcb->cmd = (dir) ? DCB_CMD_PGRX_GCFG : DCB_CMD_PGTX_GCFG;
746 pg_nest = nla_nest_start(dcbnl_skb, DCB_ATTR_PG_CFG);
750 if (pg_tb[DCB_PG_ATTR_TC_ALL])
753 for (i = DCB_PG_ATTR_TC_0; i <= DCB_PG_ATTR_TC_7; i++) {
754 if (!getall && !pg_tb[i])
757 if (pg_tb[DCB_PG_ATTR_TC_ALL])
758 data = pg_tb[DCB_PG_ATTR_TC_ALL];
761 ret = nla_parse_nested(param_tb, DCB_TC_ATTR_PARAM_MAX,
762 data, dcbnl_tc_param_nest);
766 param_nest = nla_nest_start(dcbnl_skb, i);
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;
777 netdev->dcbnl_ops->getpgtccfgrx(netdev,
778 i - DCB_PG_ATTR_TC_0, &prio,
779 &pgid, &tc_pct, &up_map);
782 netdev->dcbnl_ops->getpgtccfgtx(netdev,
783 i - DCB_PG_ATTR_TC_0, &prio,
784 &pgid, &tc_pct, &up_map);
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);
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);
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);
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,
815 nla_nest_end(dcbnl_skb, param_nest);
818 if (pg_tb[DCB_PG_ATTR_BW_ID_ALL])
823 for (i = DCB_PG_ATTR_BW_ID_0; i <= DCB_PG_ATTR_BW_ID_7; i++) {
824 if (!getall && !pg_tb[i])
827 tc_pct = DCB_ATTR_VALUE_UNDEFINED;
831 netdev->dcbnl_ops->getpgbwgcfgrx(netdev,
832 i - DCB_PG_ATTR_BW_ID_0, &tc_pct);
835 netdev->dcbnl_ops->getpgbwgcfgtx(netdev,
836 i - DCB_PG_ATTR_BW_ID_0, &tc_pct);
838 ret = nla_put_u8(dcbnl_skb, i, tc_pct);
844 nla_nest_end(dcbnl_skb, pg_nest);
846 nlmsg_end(dcbnl_skb, nlh);
848 ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
855 nla_nest_cancel(dcbnl_skb, param_nest);
857 nla_nest_cancel(dcbnl_skb, pg_nest);
860 kfree_skb(dcbnl_skb);
866 static int dcbnl_pgtx_getcfg(struct net_device *netdev, struct nlattr **tb,
867 u32 pid, u32 seq, u16 flags)
869 return __dcbnl_pg_getcfg(netdev, tb, pid, seq, flags, 0);
872 static int dcbnl_pgrx_getcfg(struct net_device *netdev, struct nlattr **tb,
873 u32 pid, u32 seq, u16 flags)
875 return __dcbnl_pg_getcfg(netdev, tb, pid, seq, flags, 1);
878 static int dcbnl_setstate(struct net_device *netdev, struct nlattr **tb,
879 u32 pid, u32 seq, u16 flags)
884 if (!tb[DCB_ATTR_STATE] || !netdev->dcbnl_ops->setstate)
887 value = nla_get_u8(tb[DCB_ATTR_STATE]);
889 ret = dcbnl_reply(netdev->dcbnl_ops->setstate(netdev, value),
890 RTM_SETDCB, DCB_CMD_SSTATE, DCB_ATTR_STATE,
896 static int dcbnl_setpfccfg(struct net_device *netdev, struct nlattr **tb,
897 u32 pid, u32 seq, u16 flags)
899 struct nlattr *data[DCB_PFC_UP_ATTR_MAX + 1];
904 if (!tb[DCB_ATTR_PFC_CFG] || !netdev->dcbnl_ops->setpfccfg)
907 ret = nla_parse_nested(data, DCB_PFC_UP_ATTR_MAX,
908 tb[DCB_ATTR_PFC_CFG],
913 for (i = DCB_PFC_UP_ATTR_0; i <= DCB_PFC_UP_ATTR_7; i++) {
916 value = nla_get_u8(data[i]);
917 netdev->dcbnl_ops->setpfccfg(netdev,
918 data[i]->nla_type - DCB_PFC_UP_ATTR_0, value);
921 ret = dcbnl_reply(0, RTM_SETDCB, DCB_CMD_PFC_SCFG, DCB_ATTR_PFC_CFG,
927 static int dcbnl_setall(struct net_device *netdev, struct nlattr **tb,
928 u32 pid, u32 seq, u16 flags)
932 if (!tb[DCB_ATTR_SET_ALL] || !netdev->dcbnl_ops->setall)
935 ret = dcbnl_reply(netdev->dcbnl_ops->setall(netdev), RTM_SETDCB,
936 DCB_CMD_SET_ALL, DCB_ATTR_SET_ALL, pid, seq, flags);
941 static int __dcbnl_pg_setcfg(struct net_device *netdev, struct nlattr **tb,
942 u32 pid, u32 seq, u16 flags, int dir)
944 struct nlattr *pg_tb[DCB_PG_ATTR_MAX + 1];
945 struct nlattr *param_tb[DCB_TC_ATTR_PARAM_MAX + 1];
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)
960 ret = nla_parse_nested(pg_tb, DCB_PG_ATTR_MAX,
961 tb[DCB_ATTR_PG_CFG], dcbnl_pg_nest);
965 for (i = DCB_PG_ATTR_TC_0; i <= DCB_PG_ATTR_TC_7; i++) {
969 ret = nla_parse_nested(param_tb, DCB_TC_ATTR_PARAM_MAX,
970 pg_tb[i], dcbnl_tc_param_nest);
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;
979 if (param_tb[DCB_TC_ATTR_PARAM_STRICT_PRIO])
981 nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_STRICT_PRIO]);
983 if (param_tb[DCB_TC_ATTR_PARAM_PGID])
984 pgid = nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_PGID]);
986 if (param_tb[DCB_TC_ATTR_PARAM_BW_PCT])
987 tc_pct = nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_BW_PCT]);
989 if (param_tb[DCB_TC_ATTR_PARAM_UP_MAPPING])
991 nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_UP_MAPPING]);
993 /* dir: Tx = 0, Rx = 1 */
996 netdev->dcbnl_ops->setpgtccfgrx(netdev,
997 i - DCB_PG_ATTR_TC_0,
998 prio, pgid, tc_pct, up_map);
1001 netdev->dcbnl_ops->setpgtccfgtx(netdev,
1002 i - DCB_PG_ATTR_TC_0,
1003 prio, pgid, tc_pct, up_map);
1007 for (i = DCB_PG_ATTR_BW_ID_0; i <= DCB_PG_ATTR_BW_ID_7; i++) {
1011 tc_pct = nla_get_u8(pg_tb[i]);
1013 /* dir: Tx = 0, Rx = 1 */
1016 netdev->dcbnl_ops->setpgbwgcfgrx(netdev,
1017 i - DCB_PG_ATTR_BW_ID_0, tc_pct);
1020 netdev->dcbnl_ops->setpgbwgcfgtx(netdev,
1021 i - DCB_PG_ATTR_BW_ID_0, tc_pct);
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);
1033 static int dcbnl_pgtx_setcfg(struct net_device *netdev, struct nlattr **tb,
1034 u32 pid, u32 seq, u16 flags)
1036 return __dcbnl_pg_setcfg(netdev, tb, pid, seq, flags, 0);
1039 static int dcbnl_pgrx_setcfg(struct net_device *netdev, struct nlattr **tb,
1040 u32 pid, u32 seq, u16 flags)
1042 return __dcbnl_pg_setcfg(netdev, tb, pid, seq, flags, 1);
1045 static int dcbnl_bcn_getcfg(struct net_device *netdev, struct nlattr **tb,
1046 u32 pid, u32 seq, u16 flags)
1048 struct sk_buff *dcbnl_skb;
1049 struct nlmsghdr *nlh;
1051 struct nlattr *bcn_nest;
1052 struct nlattr *bcn_tb[DCB_BCN_ATTR_MAX + 1];
1056 bool getall = false;
1059 if (!tb[DCB_ATTR_BCN] || !netdev->dcbnl_ops->getbcnrp ||
1060 !netdev->dcbnl_ops->getbcncfg)
1063 ret = nla_parse_nested(bcn_tb, DCB_BCN_ATTR_MAX,
1064 tb[DCB_ATTR_BCN], dcbnl_bcn_nest);
1069 dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1073 nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
1075 dcb = NLMSG_DATA(nlh);
1076 dcb->dcb_family = AF_UNSPEC;
1077 dcb->cmd = DCB_CMD_BCN_GCFG;
1079 bcn_nest = nla_nest_start(dcbnl_skb, DCB_ATTR_BCN);
1083 if (bcn_tb[DCB_BCN_ATTR_ALL])
1086 for (i = DCB_BCN_ATTR_RP_0; i <= DCB_BCN_ATTR_RP_7; i++) {
1087 if (!getall && !bcn_tb[i])
1090 netdev->dcbnl_ops->getbcnrp(netdev, i - DCB_BCN_ATTR_RP_0,
1092 ret = nla_put_u8(dcbnl_skb, i, value_byte);
1097 for (i = DCB_BCN_ATTR_BCNA_0; i <= DCB_BCN_ATTR_RI; i++) {
1098 if (!getall && !bcn_tb[i])
1101 netdev->dcbnl_ops->getbcncfg(netdev, i,
1103 ret = nla_put_u32(dcbnl_skb, i, value_integer);
1108 nla_nest_end(dcbnl_skb, bcn_nest);
1110 nlmsg_end(dcbnl_skb, nlh);
1112 ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
1119 nla_nest_cancel(dcbnl_skb, bcn_nest);
1122 kfree_skb(dcbnl_skb);
1128 static int dcbnl_bcn_setcfg(struct net_device *netdev, struct nlattr **tb,
1129 u32 pid, u32 seq, u16 flags)
1131 struct nlattr *data[DCB_BCN_ATTR_MAX + 1];
1137 if (!tb[DCB_ATTR_BCN] || !netdev->dcbnl_ops->setbcncfg ||
1138 !netdev->dcbnl_ops->setbcnrp)
1141 ret = nla_parse_nested(data, DCB_BCN_ATTR_MAX,
1147 for (i = DCB_BCN_ATTR_RP_0; i <= DCB_BCN_ATTR_RP_7; i++) {
1148 if (data[i] == NULL)
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);
1155 for (i = DCB_BCN_ATTR_BCNA_0; i <= DCB_BCN_ATTR_RI; i++) {
1156 if (data[i] == NULL)
1158 value_int = nla_get_u32(data[i]);
1159 netdev->dcbnl_ops->setbcncfg(netdev,
1163 ret = dcbnl_reply(0, RTM_SETDCB, DCB_CMD_BCN_SCFG, DCB_ATTR_BCN,
1169 static int dcbnl_build_peer_app(struct net_device *netdev, struct sk_buff* skb,
1170 int app_nested_type, int app_info_type,
1173 struct dcb_peer_app_info info;
1174 struct dcb_app *table = NULL;
1175 const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
1181 * retrieve the peer app configuration form the driver. If the driver
1182 * handlers fail exit without doing anything
1184 err = ops->peer_getappinfo(netdev, &info, &app_count);
1185 if (!err && app_count) {
1186 table = kmalloc(sizeof(struct dcb_app) * app_count, GFP_KERNEL);
1190 err = ops->peer_getapptable(netdev, table);
1198 * build the message, from here on the only possible failure
1199 * is due to the skb size
1203 app = nla_nest_start(skb, app_nested_type);
1205 goto nla_put_failure;
1208 NLA_PUT(skb, app_info_type, sizeof(info), &info);
1210 for (i = 0; i < app_count; i++)
1211 NLA_PUT(skb, app_entry_type, sizeof(struct dcb_app),
1214 nla_nest_end(skb, app);
1223 /* Handle IEEE 802.1Qaz GET commands. */
1224 static int dcbnl_ieee_fill(struct sk_buff *skb, struct net_device *netdev)
1226 struct nlattr *ieee, *app;
1227 struct dcb_app_type *itr;
1228 const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
1230 int err = -EMSGSIZE;
1232 NLA_PUT_STRING(skb, DCB_ATTR_IFNAME, netdev->name);
1234 ieee = nla_nest_start(skb, DCB_ATTR_IEEE);
1236 goto nla_put_failure;
1238 if (ops->ieee_getets) {
1239 struct ieee_ets ets;
1240 err = ops->ieee_getets(netdev, &ets);
1242 NLA_PUT(skb, DCB_ATTR_IEEE_ETS, sizeof(ets), &ets);
1245 if (ops->ieee_getpfc) {
1246 struct ieee_pfc pfc;
1247 err = ops->ieee_getpfc(netdev, &pfc);
1249 NLA_PUT(skb, DCB_ATTR_IEEE_PFC, sizeof(pfc), &pfc);
1252 app = nla_nest_start(skb, DCB_ATTR_IEEE_APP_TABLE);
1254 goto nla_put_failure;
1256 spin_lock(&dcb_lock);
1257 list_for_each_entry(itr, &dcb_app_list, list) {
1258 if (strncmp(itr->name, netdev->name, IFNAMSIZ) == 0) {
1259 err = nla_put(skb, DCB_ATTR_IEEE_APP, sizeof(itr->app),
1262 spin_unlock(&dcb_lock);
1263 goto nla_put_failure;
1268 if (netdev->dcbnl_ops->getdcbx)
1269 dcbx = netdev->dcbnl_ops->getdcbx(netdev);
1273 spin_unlock(&dcb_lock);
1274 nla_nest_end(skb, app);
1276 /* get peer info if available */
1277 if (ops->ieee_peer_getets) {
1278 struct ieee_ets ets;
1279 err = ops->ieee_peer_getets(netdev, &ets);
1281 NLA_PUT(skb, DCB_ATTR_IEEE_PEER_ETS, sizeof(ets), &ets);
1284 if (ops->ieee_peer_getpfc) {
1285 struct ieee_pfc pfc;
1286 err = ops->ieee_peer_getpfc(netdev, &pfc);
1288 NLA_PUT(skb, DCB_ATTR_IEEE_PEER_PFC, sizeof(pfc), &pfc);
1291 if (ops->peer_getappinfo && ops->peer_getapptable) {
1292 err = dcbnl_build_peer_app(netdev, skb,
1293 DCB_ATTR_IEEE_PEER_APP,
1294 DCB_ATTR_IEEE_APP_UNSPEC,
1297 goto nla_put_failure;
1300 nla_nest_end(skb, ieee);
1302 err = nla_put_u8(skb, DCB_ATTR_DCBX, dcbx);
1304 goto nla_put_failure;
1313 int dcbnl_notify(struct net_device *dev, int event, int cmd,
1316 struct net *net = dev_net(dev);
1317 struct sk_buff *skb;
1318 struct nlmsghdr *nlh;
1320 const struct dcbnl_rtnl_ops *ops = dev->dcbnl_ops;
1326 skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1330 nlh = nlmsg_put(skb, pid, 0, event, sizeof(*dcb), 0);
1336 dcb = NLMSG_DATA(nlh);
1337 dcb->dcb_family = AF_UNSPEC;
1340 err = dcbnl_ieee_fill(skb, dev);
1342 /* Report error to broadcast listeners */
1343 nlmsg_cancel(skb, nlh);
1345 rtnl_set_sk_err(net, RTNLGRP_DCB, err);
1347 /* End nlmsg and notify broadcast listeners */
1348 nlmsg_end(skb, nlh);
1349 rtnl_notify(skb, net, 0, RTNLGRP_DCB, NULL, GFP_KERNEL);
1354 EXPORT_SYMBOL(dcbnl_notify);
1356 /* Handle IEEE 802.1Qaz SET commands. If any requested operation can not
1357 * be completed the entire msg is aborted and error value is returned.
1358 * No attempt is made to reconcile the case where only part of the
1359 * cmd can be completed.
1361 static int dcbnl_ieee_set(struct net_device *netdev, struct nlattr **tb,
1362 u32 pid, u32 seq, u16 flags)
1364 const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
1365 struct nlattr *ieee[DCB_ATTR_IEEE_MAX + 1];
1366 int err = -EOPNOTSUPP;
1371 err = nla_parse_nested(ieee, DCB_ATTR_IEEE_MAX,
1372 tb[DCB_ATTR_IEEE], dcbnl_ieee_policy);
1376 if (ieee[DCB_ATTR_IEEE_ETS] && ops->ieee_setets) {
1377 struct ieee_ets *ets = nla_data(ieee[DCB_ATTR_IEEE_ETS]);
1378 err = ops->ieee_setets(netdev, ets);
1383 if (ieee[DCB_ATTR_IEEE_PFC] && ops->ieee_setpfc) {
1384 struct ieee_pfc *pfc = nla_data(ieee[DCB_ATTR_IEEE_PFC]);
1385 err = ops->ieee_setpfc(netdev, pfc);
1390 if (ieee[DCB_ATTR_IEEE_APP_TABLE]) {
1391 struct nlattr *attr;
1394 nla_for_each_nested(attr, ieee[DCB_ATTR_IEEE_APP_TABLE], rem) {
1395 struct dcb_app *app_data;
1396 if (nla_type(attr) != DCB_ATTR_IEEE_APP)
1398 app_data = nla_data(attr);
1399 if (ops->ieee_setapp)
1400 err = ops->ieee_setapp(netdev, app_data);
1402 err = dcb_ieee_setapp(netdev, app_data);
1409 dcbnl_reply(err, RTM_SETDCB, DCB_CMD_IEEE_SET, DCB_ATTR_IEEE,
1411 dcbnl_notify(netdev, RTM_SETDCB, DCB_CMD_IEEE_SET, seq, 0);
1415 static int dcbnl_ieee_get(struct net_device *netdev, struct nlattr **tb,
1416 u32 pid, u32 seq, u16 flags)
1418 struct net *net = dev_net(netdev);
1419 struct sk_buff *skb;
1420 struct nlmsghdr *nlh;
1422 const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
1428 skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1432 nlh = nlmsg_put(skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
1438 dcb = NLMSG_DATA(nlh);
1439 dcb->dcb_family = AF_UNSPEC;
1440 dcb->cmd = DCB_CMD_IEEE_GET;
1442 err = dcbnl_ieee_fill(skb, netdev);
1445 nlmsg_cancel(skb, nlh);
1448 nlmsg_end(skb, nlh);
1449 err = rtnl_unicast(skb, net, pid);
1455 static int dcbnl_ieee_del(struct net_device *netdev, struct nlattr **tb,
1456 u32 pid, u32 seq, u16 flags)
1458 const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
1459 struct nlattr *ieee[DCB_ATTR_IEEE_MAX + 1];
1460 int err = -EOPNOTSUPP;
1465 if (!tb[DCB_ATTR_IEEE])
1468 err = nla_parse_nested(ieee, DCB_ATTR_IEEE_MAX,
1469 tb[DCB_ATTR_IEEE], dcbnl_ieee_policy);
1473 if (ieee[DCB_ATTR_IEEE_APP_TABLE]) {
1474 struct nlattr *attr;
1477 nla_for_each_nested(attr, ieee[DCB_ATTR_IEEE_APP_TABLE], rem) {
1478 struct dcb_app *app_data;
1480 if (nla_type(attr) != DCB_ATTR_IEEE_APP)
1482 app_data = nla_data(attr);
1483 if (ops->ieee_delapp)
1484 err = ops->ieee_delapp(netdev, app_data);
1486 err = dcb_ieee_delapp(netdev, app_data);
1493 dcbnl_reply(err, RTM_SETDCB, DCB_CMD_IEEE_DEL, DCB_ATTR_IEEE,
1495 dcbnl_notify(netdev, RTM_SETDCB, DCB_CMD_IEEE_DEL, seq, 0);
1500 /* DCBX configuration */
1501 static int dcbnl_getdcbx(struct net_device *netdev, struct nlattr **tb,
1502 u32 pid, u32 seq, u16 flags)
1506 if (!netdev->dcbnl_ops->getdcbx)
1509 ret = dcbnl_reply(netdev->dcbnl_ops->getdcbx(netdev), RTM_GETDCB,
1510 DCB_CMD_GDCBX, DCB_ATTR_DCBX, pid, seq, flags);
1515 static int dcbnl_setdcbx(struct net_device *netdev, struct nlattr **tb,
1516 u32 pid, u32 seq, u16 flags)
1521 if (!netdev->dcbnl_ops->setdcbx)
1524 if (!tb[DCB_ATTR_DCBX])
1527 value = nla_get_u8(tb[DCB_ATTR_DCBX]);
1529 ret = dcbnl_reply(netdev->dcbnl_ops->setdcbx(netdev, value),
1530 RTM_SETDCB, DCB_CMD_SDCBX, DCB_ATTR_DCBX,
1536 static int dcbnl_getfeatcfg(struct net_device *netdev, struct nlattr **tb,
1537 u32 pid, u32 seq, u16 flags)
1539 struct sk_buff *dcbnl_skb;
1540 struct nlmsghdr *nlh;
1542 struct nlattr *data[DCB_FEATCFG_ATTR_MAX + 1], *nest;
1547 if (!netdev->dcbnl_ops->getfeatcfg)
1550 if (!tb[DCB_ATTR_FEATCFG])
1553 ret = nla_parse_nested(data, DCB_FEATCFG_ATTR_MAX, tb[DCB_ATTR_FEATCFG],
1554 dcbnl_featcfg_nest);
1558 dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1564 nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
1566 dcb = NLMSG_DATA(nlh);
1567 dcb->dcb_family = AF_UNSPEC;
1568 dcb->cmd = DCB_CMD_GFEATCFG;
1570 nest = nla_nest_start(dcbnl_skb, DCB_ATTR_FEATCFG);
1573 goto nla_put_failure;
1576 if (data[DCB_FEATCFG_ATTR_ALL])
1579 for (i = DCB_FEATCFG_ATTR_ALL+1; i <= DCB_FEATCFG_ATTR_MAX; i++) {
1580 if (!getall && !data[i])
1583 ret = netdev->dcbnl_ops->getfeatcfg(netdev, i, &value);
1585 ret = nla_put_u8(dcbnl_skb, i, value);
1588 nla_nest_cancel(dcbnl_skb, nest);
1589 goto nla_put_failure;
1592 nla_nest_end(dcbnl_skb, nest);
1594 nlmsg_end(dcbnl_skb, nlh);
1596 return rtnl_unicast(dcbnl_skb, &init_net, pid);
1598 nlmsg_cancel(dcbnl_skb, nlh);
1600 kfree_skb(dcbnl_skb);
1605 static int dcbnl_setfeatcfg(struct net_device *netdev, struct nlattr **tb,
1606 u32 pid, u32 seq, u16 flags)
1608 struct nlattr *data[DCB_FEATCFG_ATTR_MAX + 1];
1612 if (!netdev->dcbnl_ops->setfeatcfg)
1615 if (!tb[DCB_ATTR_FEATCFG])
1618 ret = nla_parse_nested(data, DCB_FEATCFG_ATTR_MAX, tb[DCB_ATTR_FEATCFG],
1619 dcbnl_featcfg_nest);
1624 for (i = DCB_FEATCFG_ATTR_ALL+1; i <= DCB_FEATCFG_ATTR_MAX; i++) {
1625 if (data[i] == NULL)
1628 value = nla_get_u8(data[i]);
1630 ret = netdev->dcbnl_ops->setfeatcfg(netdev, i, value);
1636 dcbnl_reply(ret, RTM_SETDCB, DCB_CMD_SFEATCFG, DCB_ATTR_FEATCFG,
1642 /* Handle CEE DCBX GET commands. */
1643 static int dcbnl_cee_get(struct net_device *netdev, struct nlattr **tb,
1644 u32 pid, u32 seq, u16 flags)
1646 struct sk_buff *skb;
1647 struct nlmsghdr *nlh;
1650 const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
1656 skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1660 nlh = NLMSG_NEW(skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
1662 dcb = NLMSG_DATA(nlh);
1663 dcb->dcb_family = AF_UNSPEC;
1664 dcb->cmd = DCB_CMD_CEE_GET;
1666 NLA_PUT_STRING(skb, DCB_ATTR_IFNAME, netdev->name);
1668 cee = nla_nest_start(skb, DCB_ATTR_CEE);
1670 goto nla_put_failure;
1672 /* get peer info if available */
1673 if (ops->cee_peer_getpg) {
1675 err = ops->cee_peer_getpg(netdev, &pg);
1677 NLA_PUT(skb, DCB_ATTR_CEE_PEER_PG, sizeof(pg), &pg);
1680 if (ops->cee_peer_getpfc) {
1682 err = ops->cee_peer_getpfc(netdev, &pfc);
1684 NLA_PUT(skb, DCB_ATTR_CEE_PEER_PFC, sizeof(pfc), &pfc);
1687 if (ops->peer_getappinfo && ops->peer_getapptable) {
1688 err = dcbnl_build_peer_app(netdev, skb,
1689 DCB_ATTR_CEE_PEER_APP_TABLE,
1690 DCB_ATTR_CEE_PEER_APP_INFO,
1691 DCB_ATTR_CEE_PEER_APP);
1693 goto nla_put_failure;
1696 nla_nest_end(skb, cee);
1697 nlmsg_end(skb, nlh);
1699 return rtnl_unicast(skb, &init_net, pid);
1701 nlmsg_cancel(skb, nlh);
1707 static int dcb_doit(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
1709 struct net *net = sock_net(skb->sk);
1710 struct net_device *netdev;
1711 struct dcbmsg *dcb = (struct dcbmsg *)NLMSG_DATA(nlh);
1712 struct nlattr *tb[DCB_ATTR_MAX + 1];
1713 u32 pid = skb ? NETLINK_CB(skb).pid : 0;
1716 if (!net_eq(net, &init_net))
1719 ret = nlmsg_parse(nlh, sizeof(*dcb), tb, DCB_ATTR_MAX,
1724 if (!tb[DCB_ATTR_IFNAME])
1727 netdev = dev_get_by_name(&init_net, nla_data(tb[DCB_ATTR_IFNAME]));
1731 if (!netdev->dcbnl_ops)
1735 case DCB_CMD_GSTATE:
1736 ret = dcbnl_getstate(netdev, tb, pid, nlh->nlmsg_seq,
1739 case DCB_CMD_PFC_GCFG:
1740 ret = dcbnl_getpfccfg(netdev, tb, pid, nlh->nlmsg_seq,
1743 case DCB_CMD_GPERM_HWADDR:
1744 ret = dcbnl_getperm_hwaddr(netdev, tb, pid, nlh->nlmsg_seq,
1747 case DCB_CMD_PGTX_GCFG:
1748 ret = dcbnl_pgtx_getcfg(netdev, tb, pid, nlh->nlmsg_seq,
1751 case DCB_CMD_PGRX_GCFG:
1752 ret = dcbnl_pgrx_getcfg(netdev, tb, pid, nlh->nlmsg_seq,
1755 case DCB_CMD_BCN_GCFG:
1756 ret = dcbnl_bcn_getcfg(netdev, tb, pid, nlh->nlmsg_seq,
1759 case DCB_CMD_SSTATE:
1760 ret = dcbnl_setstate(netdev, tb, pid, nlh->nlmsg_seq,
1763 case DCB_CMD_PFC_SCFG:
1764 ret = dcbnl_setpfccfg(netdev, tb, pid, nlh->nlmsg_seq,
1768 case DCB_CMD_SET_ALL:
1769 ret = dcbnl_setall(netdev, tb, pid, nlh->nlmsg_seq,
1772 case DCB_CMD_PGTX_SCFG:
1773 ret = dcbnl_pgtx_setcfg(netdev, tb, pid, nlh->nlmsg_seq,
1776 case DCB_CMD_PGRX_SCFG:
1777 ret = dcbnl_pgrx_setcfg(netdev, tb, pid, nlh->nlmsg_seq,
1781 ret = dcbnl_getcap(netdev, tb, pid, nlh->nlmsg_seq,
1784 case DCB_CMD_GNUMTCS:
1785 ret = dcbnl_getnumtcs(netdev, tb, pid, nlh->nlmsg_seq,
1788 case DCB_CMD_SNUMTCS:
1789 ret = dcbnl_setnumtcs(netdev, tb, pid, nlh->nlmsg_seq,
1792 case DCB_CMD_PFC_GSTATE:
1793 ret = dcbnl_getpfcstate(netdev, tb, pid, nlh->nlmsg_seq,
1796 case DCB_CMD_PFC_SSTATE:
1797 ret = dcbnl_setpfcstate(netdev, tb, pid, nlh->nlmsg_seq,
1800 case DCB_CMD_BCN_SCFG:
1801 ret = dcbnl_bcn_setcfg(netdev, tb, pid, nlh->nlmsg_seq,
1805 ret = dcbnl_getapp(netdev, tb, pid, nlh->nlmsg_seq,
1809 ret = dcbnl_setapp(netdev, tb, pid, nlh->nlmsg_seq,
1812 case DCB_CMD_IEEE_SET:
1813 ret = dcbnl_ieee_set(netdev, tb, pid, nlh->nlmsg_seq,
1816 case DCB_CMD_IEEE_GET:
1817 ret = dcbnl_ieee_get(netdev, tb, pid, nlh->nlmsg_seq,
1820 case DCB_CMD_IEEE_DEL:
1821 ret = dcbnl_ieee_del(netdev, tb, pid, nlh->nlmsg_seq,
1825 ret = dcbnl_getdcbx(netdev, tb, pid, nlh->nlmsg_seq,
1829 ret = dcbnl_setdcbx(netdev, tb, pid, nlh->nlmsg_seq,
1832 case DCB_CMD_GFEATCFG:
1833 ret = dcbnl_getfeatcfg(netdev, tb, pid, nlh->nlmsg_seq,
1836 case DCB_CMD_SFEATCFG:
1837 ret = dcbnl_setfeatcfg(netdev, tb, pid, nlh->nlmsg_seq,
1840 case DCB_CMD_CEE_GET:
1841 ret = dcbnl_cee_get(netdev, tb, pid, nlh->nlmsg_seq,
1855 * dcb_getapp - retrieve the DCBX application user priority
1857 * On success returns a non-zero 802.1p user priority bitmap
1858 * otherwise returns 0 as the invalid user priority bitmap to
1859 * indicate an error.
1861 u8 dcb_getapp(struct net_device *dev, struct dcb_app *app)
1863 struct dcb_app_type *itr;
1866 spin_lock(&dcb_lock);
1867 list_for_each_entry(itr, &dcb_app_list, list) {
1868 if (itr->app.selector == app->selector &&
1869 itr->app.protocol == app->protocol &&
1870 (strncmp(itr->name, dev->name, IFNAMSIZ) == 0)) {
1871 prio = itr->app.priority;
1875 spin_unlock(&dcb_lock);
1879 EXPORT_SYMBOL(dcb_getapp);
1882 * dcb_setapp - add CEE dcb application data to app list
1884 * Priority 0 is an invalid priority in CEE spec. This routine
1885 * removes applications from the app list if the priority is
1888 u8 dcb_setapp(struct net_device *dev, struct dcb_app *new)
1890 struct dcb_app_type *itr;
1891 struct dcb_app_type event;
1893 memcpy(&event.name, dev->name, sizeof(event.name));
1894 memcpy(&event.app, new, sizeof(event.app));
1896 spin_lock(&dcb_lock);
1897 /* Search for existing match and replace */
1898 list_for_each_entry(itr, &dcb_app_list, list) {
1899 if (itr->app.selector == new->selector &&
1900 itr->app.protocol == new->protocol &&
1901 (strncmp(itr->name, dev->name, IFNAMSIZ) == 0)) {
1903 itr->app.priority = new->priority;
1905 list_del(&itr->list);
1911 /* App type does not exist add new application type */
1912 if (new->priority) {
1913 struct dcb_app_type *entry;
1914 entry = kmalloc(sizeof(struct dcb_app_type), GFP_ATOMIC);
1916 spin_unlock(&dcb_lock);
1920 memcpy(&entry->app, new, sizeof(*new));
1921 strncpy(entry->name, dev->name, IFNAMSIZ);
1922 list_add(&entry->list, &dcb_app_list);
1925 spin_unlock(&dcb_lock);
1926 call_dcbevent_notifiers(DCB_APP_EVENT, &event);
1929 EXPORT_SYMBOL(dcb_setapp);
1932 * dcb_ieee_setapp - add IEEE dcb application data to app list
1934 * This adds Application data to the list. Multiple application
1935 * entries may exists for the same selector and protocol as long
1936 * as the priorities are different.
1938 int dcb_ieee_setapp(struct net_device *dev, struct dcb_app *new)
1940 struct dcb_app_type *itr, *entry;
1941 struct dcb_app_type event;
1944 memcpy(&event.name, dev->name, sizeof(event.name));
1945 memcpy(&event.app, new, sizeof(event.app));
1947 spin_lock(&dcb_lock);
1948 /* Search for existing match and abort if found */
1949 list_for_each_entry(itr, &dcb_app_list, list) {
1950 if (itr->app.selector == new->selector &&
1951 itr->app.protocol == new->protocol &&
1952 itr->app.priority == new->priority &&
1953 (strncmp(itr->name, dev->name, IFNAMSIZ) == 0)) {
1959 /* App entry does not exist add new entry */
1960 entry = kmalloc(sizeof(struct dcb_app_type), GFP_ATOMIC);
1966 memcpy(&entry->app, new, sizeof(*new));
1967 strncpy(entry->name, dev->name, IFNAMSIZ);
1968 list_add(&entry->list, &dcb_app_list);
1970 spin_unlock(&dcb_lock);
1972 call_dcbevent_notifiers(DCB_APP_EVENT, &event);
1975 EXPORT_SYMBOL(dcb_ieee_setapp);
1978 * dcb_ieee_delapp - delete IEEE dcb application data from list
1980 * This removes a matching APP data from the APP list
1982 int dcb_ieee_delapp(struct net_device *dev, struct dcb_app *del)
1984 struct dcb_app_type *itr;
1985 struct dcb_app_type event;
1988 memcpy(&event.name, dev->name, sizeof(event.name));
1989 memcpy(&event.app, del, sizeof(event.app));
1991 spin_lock(&dcb_lock);
1992 /* Search for existing match and remove it. */
1993 list_for_each_entry(itr, &dcb_app_list, list) {
1994 if (itr->app.selector == del->selector &&
1995 itr->app.protocol == del->protocol &&
1996 itr->app.priority == del->priority &&
1997 (strncmp(itr->name, dev->name, IFNAMSIZ) == 0)) {
1998 list_del(&itr->list);
2006 spin_unlock(&dcb_lock);
2008 call_dcbevent_notifiers(DCB_APP_EVENT, &event);
2011 EXPORT_SYMBOL(dcb_ieee_delapp);
2013 static void dcb_flushapp(void)
2015 struct dcb_app_type *app;
2016 struct dcb_app_type *tmp;
2018 spin_lock(&dcb_lock);
2019 list_for_each_entry_safe(app, tmp, &dcb_app_list, list) {
2020 list_del(&app->list);
2023 spin_unlock(&dcb_lock);
2026 static int __init dcbnl_init(void)
2028 INIT_LIST_HEAD(&dcb_app_list);
2030 rtnl_register(PF_UNSPEC, RTM_GETDCB, dcb_doit, NULL, NULL);
2031 rtnl_register(PF_UNSPEC, RTM_SETDCB, dcb_doit, NULL, NULL);
2035 module_init(dcbnl_init);
2037 static void __exit dcbnl_exit(void)
2039 rtnl_unregister(PF_UNSPEC, RTM_GETDCB);
2040 rtnl_unregister(PF_UNSPEC, RTM_SETDCB);
2043 module_exit(dcbnl_exit);