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>
28 #include <linux/module.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},
180 [DCB_ATTR_IEEE_MAXRATE] = {.len = sizeof(struct ieee_maxrate)},
183 static const struct nla_policy dcbnl_ieee_app[DCB_ATTR_IEEE_APP_MAX + 1] = {
184 [DCB_ATTR_IEEE_APP] = {.len = sizeof(struct dcb_app)},
187 /* DCB number of traffic classes nested attributes. */
188 static const struct nla_policy dcbnl_featcfg_nest[DCB_FEATCFG_ATTR_MAX + 1] = {
189 [DCB_FEATCFG_ATTR_ALL] = {.type = NLA_FLAG},
190 [DCB_FEATCFG_ATTR_PG] = {.type = NLA_U8},
191 [DCB_FEATCFG_ATTR_PFC] = {.type = NLA_U8},
192 [DCB_FEATCFG_ATTR_APP] = {.type = NLA_U8},
195 static LIST_HEAD(dcb_app_list);
196 static DEFINE_SPINLOCK(dcb_lock);
198 static struct sk_buff *dcbnl_newmsg(int type, u8 cmd, u32 port, u32 seq,
199 u32 flags, struct nlmsghdr **nlhp)
203 struct nlmsghdr *nlh;
205 skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
209 nlh = nlmsg_put(skb, port, seq, type, sizeof(*dcb), flags);
212 dcb = nlmsg_data(nlh);
213 dcb->dcb_family = AF_UNSPEC;
223 static int dcbnl_getstate(struct net_device *netdev, struct nlmsghdr *nlh,
224 u32 seq, struct nlattr **tb, struct sk_buff *skb)
226 /* if (!tb[DCB_ATTR_STATE] || !netdev->dcbnl_ops->getstate) */
227 if (!netdev->dcbnl_ops->getstate)
230 return nla_put_u8(skb, DCB_ATTR_STATE,
231 netdev->dcbnl_ops->getstate(netdev));
234 static int dcbnl_getpfccfg(struct net_device *netdev, struct nlmsghdr *nlh,
235 u32 seq, struct nlattr **tb, struct sk_buff *skb)
237 struct nlattr *data[DCB_PFC_UP_ATTR_MAX + 1], *nest;
243 if (!tb[DCB_ATTR_PFC_CFG])
246 if (!netdev->dcbnl_ops->getpfccfg)
249 ret = nla_parse_nested(data, DCB_PFC_UP_ATTR_MAX,
250 tb[DCB_ATTR_PFC_CFG],
255 nest = nla_nest_start(skb, DCB_ATTR_PFC_CFG);
259 if (data[DCB_PFC_UP_ATTR_ALL])
262 for (i = DCB_PFC_UP_ATTR_0; i <= DCB_PFC_UP_ATTR_7; i++) {
263 if (!getall && !data[i])
266 netdev->dcbnl_ops->getpfccfg(netdev, i - DCB_PFC_UP_ATTR_0,
268 ret = nla_put_u8(skb, i, value);
270 nla_nest_cancel(skb, nest);
274 nla_nest_end(skb, nest);
279 static int dcbnl_getperm_hwaddr(struct net_device *netdev, struct nlmsghdr *nlh,
280 u32 seq, struct nlattr **tb, struct sk_buff *skb)
282 u8 perm_addr[MAX_ADDR_LEN];
284 if (!netdev->dcbnl_ops->getpermhwaddr)
287 netdev->dcbnl_ops->getpermhwaddr(netdev, perm_addr);
289 return nla_put(skb, DCB_ATTR_PERM_HWADDR, sizeof(perm_addr), perm_addr);
292 static int dcbnl_getcap(struct net_device *netdev, struct nlmsghdr *nlh,
293 u32 seq, struct nlattr **tb, struct sk_buff *skb)
295 struct nlattr *data[DCB_CAP_ATTR_MAX + 1], *nest;
301 if (!tb[DCB_ATTR_CAP])
304 if (!netdev->dcbnl_ops->getcap)
307 ret = nla_parse_nested(data, DCB_CAP_ATTR_MAX, tb[DCB_ATTR_CAP],
312 nest = nla_nest_start(skb, DCB_ATTR_CAP);
316 if (data[DCB_CAP_ATTR_ALL])
319 for (i = DCB_CAP_ATTR_ALL+1; i <= DCB_CAP_ATTR_MAX; i++) {
320 if (!getall && !data[i])
323 if (!netdev->dcbnl_ops->getcap(netdev, i, &value)) {
324 ret = nla_put_u8(skb, i, value);
326 nla_nest_cancel(skb, nest);
331 nla_nest_end(skb, nest);
336 static int dcbnl_getnumtcs(struct net_device *netdev, struct nlmsghdr *nlh,
337 u32 seq, struct nlattr **tb, struct sk_buff *skb)
339 struct nlattr *data[DCB_NUMTCS_ATTR_MAX + 1], *nest;
345 if (!tb[DCB_ATTR_NUMTCS])
348 if (!netdev->dcbnl_ops->getnumtcs)
351 ret = nla_parse_nested(data, DCB_NUMTCS_ATTR_MAX, tb[DCB_ATTR_NUMTCS],
356 nest = nla_nest_start(skb, DCB_ATTR_NUMTCS);
360 if (data[DCB_NUMTCS_ATTR_ALL])
363 for (i = DCB_NUMTCS_ATTR_ALL+1; i <= DCB_NUMTCS_ATTR_MAX; i++) {
364 if (!getall && !data[i])
367 ret = netdev->dcbnl_ops->getnumtcs(netdev, i, &value);
369 ret = nla_put_u8(skb, i, value);
371 nla_nest_cancel(skb, nest);
377 nla_nest_end(skb, nest);
382 static int dcbnl_setnumtcs(struct net_device *netdev, struct nlmsghdr *nlh,
383 u32 seq, struct nlattr **tb, struct sk_buff *skb)
385 struct nlattr *data[DCB_NUMTCS_ATTR_MAX + 1];
390 if (!tb[DCB_ATTR_NUMTCS])
393 if (!netdev->dcbnl_ops->setnumtcs)
396 ret = nla_parse_nested(data, DCB_NUMTCS_ATTR_MAX, tb[DCB_ATTR_NUMTCS],
401 for (i = DCB_NUMTCS_ATTR_ALL+1; i <= DCB_NUMTCS_ATTR_MAX; i++) {
405 value = nla_get_u8(data[i]);
407 ret = netdev->dcbnl_ops->setnumtcs(netdev, i, value);
412 return nla_put_u8(skb, DCB_ATTR_NUMTCS, !!ret);
415 static int dcbnl_getpfcstate(struct net_device *netdev, struct nlmsghdr *nlh,
416 u32 seq, struct nlattr **tb, struct sk_buff *skb)
418 if (!netdev->dcbnl_ops->getpfcstate)
421 return nla_put_u8(skb, DCB_ATTR_PFC_STATE,
422 netdev->dcbnl_ops->getpfcstate(netdev));
425 static int dcbnl_setpfcstate(struct net_device *netdev, struct nlmsghdr *nlh,
426 u32 seq, struct nlattr **tb, struct sk_buff *skb)
430 if (!tb[DCB_ATTR_PFC_STATE])
433 if (!netdev->dcbnl_ops->setpfcstate)
436 value = nla_get_u8(tb[DCB_ATTR_PFC_STATE]);
438 netdev->dcbnl_ops->setpfcstate(netdev, value);
440 return nla_put_u8(skb, DCB_ATTR_PFC_STATE, 0);
443 static int dcbnl_getapp(struct net_device *netdev, struct nlmsghdr *nlh,
444 u32 seq, struct nlattr **tb, struct sk_buff *skb)
446 struct nlattr *app_nest;
447 struct nlattr *app_tb[DCB_APP_ATTR_MAX + 1];
452 if (!tb[DCB_ATTR_APP])
455 ret = nla_parse_nested(app_tb, DCB_APP_ATTR_MAX, tb[DCB_ATTR_APP],
460 /* all must be non-null */
461 if ((!app_tb[DCB_APP_ATTR_IDTYPE]) ||
462 (!app_tb[DCB_APP_ATTR_ID]))
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))
471 id = nla_get_u16(app_tb[DCB_APP_ATTR_ID]);
473 if (netdev->dcbnl_ops->getapp) {
474 up = netdev->dcbnl_ops->getapp(netdev, idtype, id);
476 struct dcb_app app = {
480 up = dcb_getapp(netdev, &app);
483 app_nest = nla_nest_start(skb, DCB_ATTR_APP);
487 ret = nla_put_u8(skb, DCB_APP_ATTR_IDTYPE, idtype);
491 ret = nla_put_u16(skb, DCB_APP_ATTR_ID, id);
495 ret = nla_put_u8(skb, DCB_APP_ATTR_PRIORITY, up);
499 nla_nest_end(skb, app_nest);
504 nla_nest_cancel(skb, app_nest);
508 static int dcbnl_setapp(struct net_device *netdev, struct nlmsghdr *nlh,
509 u32 seq, struct nlattr **tb, struct sk_buff *skb)
514 struct nlattr *app_tb[DCB_APP_ATTR_MAX + 1];
516 if (!tb[DCB_ATTR_APP])
519 ret = nla_parse_nested(app_tb, DCB_APP_ATTR_MAX, tb[DCB_ATTR_APP],
524 /* all must be non-null */
525 if ((!app_tb[DCB_APP_ATTR_IDTYPE]) ||
526 (!app_tb[DCB_APP_ATTR_ID]) ||
527 (!app_tb[DCB_APP_ATTR_PRIORITY]))
530 /* either by eth type or by socket number */
531 idtype = nla_get_u8(app_tb[DCB_APP_ATTR_IDTYPE]);
532 if ((idtype != DCB_APP_IDTYPE_ETHTYPE) &&
533 (idtype != DCB_APP_IDTYPE_PORTNUM))
536 id = nla_get_u16(app_tb[DCB_APP_ATTR_ID]);
537 up = nla_get_u8(app_tb[DCB_APP_ATTR_PRIORITY]);
539 if (netdev->dcbnl_ops->setapp) {
540 ret = netdev->dcbnl_ops->setapp(netdev, idtype, id, up);
543 app.selector = idtype;
546 ret = dcb_setapp(netdev, &app);
549 ret = nla_put_u8(skb, DCB_ATTR_APP, ret);
550 dcbnl_cee_notify(netdev, RTM_SETDCB, DCB_CMD_SAPP, seq, 0);
555 static int __dcbnl_pg_getcfg(struct net_device *netdev, struct nlmsghdr *nlh,
556 struct nlattr **tb, struct sk_buff *skb, int dir)
558 struct nlattr *pg_nest, *param_nest, *data;
559 struct nlattr *pg_tb[DCB_PG_ATTR_MAX + 1];
560 struct nlattr *param_tb[DCB_TC_ATTR_PARAM_MAX + 1];
561 u8 prio, pgid, tc_pct, up_map;
566 if (!tb[DCB_ATTR_PG_CFG])
569 if (!netdev->dcbnl_ops->getpgtccfgtx ||
570 !netdev->dcbnl_ops->getpgtccfgrx ||
571 !netdev->dcbnl_ops->getpgbwgcfgtx ||
572 !netdev->dcbnl_ops->getpgbwgcfgrx)
575 ret = nla_parse_nested(pg_tb, DCB_PG_ATTR_MAX,
576 tb[DCB_ATTR_PG_CFG], dcbnl_pg_nest);
580 pg_nest = nla_nest_start(skb, DCB_ATTR_PG_CFG);
584 if (pg_tb[DCB_PG_ATTR_TC_ALL])
587 for (i = DCB_PG_ATTR_TC_0; i <= DCB_PG_ATTR_TC_7; i++) {
588 if (!getall && !pg_tb[i])
591 if (pg_tb[DCB_PG_ATTR_TC_ALL])
592 data = pg_tb[DCB_PG_ATTR_TC_ALL];
595 ret = nla_parse_nested(param_tb, DCB_TC_ATTR_PARAM_MAX,
596 data, dcbnl_tc_param_nest);
600 param_nest = nla_nest_start(skb, i);
604 pgid = DCB_ATTR_VALUE_UNDEFINED;
605 prio = DCB_ATTR_VALUE_UNDEFINED;
606 tc_pct = DCB_ATTR_VALUE_UNDEFINED;
607 up_map = DCB_ATTR_VALUE_UNDEFINED;
611 netdev->dcbnl_ops->getpgtccfgrx(netdev,
612 i - DCB_PG_ATTR_TC_0, &prio,
613 &pgid, &tc_pct, &up_map);
616 netdev->dcbnl_ops->getpgtccfgtx(netdev,
617 i - DCB_PG_ATTR_TC_0, &prio,
618 &pgid, &tc_pct, &up_map);
621 if (param_tb[DCB_TC_ATTR_PARAM_PGID] ||
622 param_tb[DCB_TC_ATTR_PARAM_ALL]) {
623 ret = nla_put_u8(skb,
624 DCB_TC_ATTR_PARAM_PGID, pgid);
628 if (param_tb[DCB_TC_ATTR_PARAM_UP_MAPPING] ||
629 param_tb[DCB_TC_ATTR_PARAM_ALL]) {
630 ret = nla_put_u8(skb,
631 DCB_TC_ATTR_PARAM_UP_MAPPING, up_map);
635 if (param_tb[DCB_TC_ATTR_PARAM_STRICT_PRIO] ||
636 param_tb[DCB_TC_ATTR_PARAM_ALL]) {
637 ret = nla_put_u8(skb,
638 DCB_TC_ATTR_PARAM_STRICT_PRIO, prio);
642 if (param_tb[DCB_TC_ATTR_PARAM_BW_PCT] ||
643 param_tb[DCB_TC_ATTR_PARAM_ALL]) {
644 ret = nla_put_u8(skb, DCB_TC_ATTR_PARAM_BW_PCT,
649 nla_nest_end(skb, param_nest);
652 if (pg_tb[DCB_PG_ATTR_BW_ID_ALL])
657 for (i = DCB_PG_ATTR_BW_ID_0; i <= DCB_PG_ATTR_BW_ID_7; i++) {
658 if (!getall && !pg_tb[i])
661 tc_pct = DCB_ATTR_VALUE_UNDEFINED;
665 netdev->dcbnl_ops->getpgbwgcfgrx(netdev,
666 i - DCB_PG_ATTR_BW_ID_0, &tc_pct);
669 netdev->dcbnl_ops->getpgbwgcfgtx(netdev,
670 i - DCB_PG_ATTR_BW_ID_0, &tc_pct);
672 ret = nla_put_u8(skb, i, tc_pct);
677 nla_nest_end(skb, pg_nest);
682 nla_nest_cancel(skb, param_nest);
684 nla_nest_cancel(skb, pg_nest);
689 static int dcbnl_pgtx_getcfg(struct net_device *netdev, struct nlmsghdr *nlh,
690 u32 seq, struct nlattr **tb, struct sk_buff *skb)
692 return __dcbnl_pg_getcfg(netdev, nlh, tb, skb, 0);
695 static int dcbnl_pgrx_getcfg(struct net_device *netdev, struct nlmsghdr *nlh,
696 u32 seq, struct nlattr **tb, struct sk_buff *skb)
698 return __dcbnl_pg_getcfg(netdev, nlh, tb, skb, 1);
701 static int dcbnl_setstate(struct net_device *netdev, struct nlmsghdr *nlh,
702 u32 seq, struct nlattr **tb, struct sk_buff *skb)
706 if (!tb[DCB_ATTR_STATE])
709 if (!netdev->dcbnl_ops->setstate)
712 value = nla_get_u8(tb[DCB_ATTR_STATE]);
714 return nla_put_u8(skb, DCB_ATTR_STATE,
715 netdev->dcbnl_ops->setstate(netdev, value));
718 static int dcbnl_setpfccfg(struct net_device *netdev, struct nlmsghdr *nlh,
719 u32 seq, struct nlattr **tb, struct sk_buff *skb)
721 struct nlattr *data[DCB_PFC_UP_ATTR_MAX + 1];
726 if (!tb[DCB_ATTR_PFC_CFG])
729 if (!netdev->dcbnl_ops->setpfccfg)
732 ret = nla_parse_nested(data, DCB_PFC_UP_ATTR_MAX,
733 tb[DCB_ATTR_PFC_CFG],
738 for (i = DCB_PFC_UP_ATTR_0; i <= DCB_PFC_UP_ATTR_7; i++) {
741 value = nla_get_u8(data[i]);
742 netdev->dcbnl_ops->setpfccfg(netdev,
743 data[i]->nla_type - DCB_PFC_UP_ATTR_0, value);
746 return nla_put_u8(skb, DCB_ATTR_PFC_CFG, 0);
749 static int dcbnl_setall(struct net_device *netdev, struct nlmsghdr *nlh,
750 u32 seq, struct nlattr **tb, struct sk_buff *skb)
754 if (!tb[DCB_ATTR_SET_ALL])
757 if (!netdev->dcbnl_ops->setall)
760 ret = nla_put_u8(skb, DCB_ATTR_SET_ALL,
761 netdev->dcbnl_ops->setall(netdev));
762 dcbnl_cee_notify(netdev, RTM_SETDCB, DCB_CMD_SET_ALL, seq, 0);
767 static int __dcbnl_pg_setcfg(struct net_device *netdev, struct nlmsghdr *nlh,
768 u32 seq, struct nlattr **tb, struct sk_buff *skb,
771 struct nlattr *pg_tb[DCB_PG_ATTR_MAX + 1];
772 struct nlattr *param_tb[DCB_TC_ATTR_PARAM_MAX + 1];
780 if (!tb[DCB_ATTR_PG_CFG])
783 if (!netdev->dcbnl_ops->setpgtccfgtx ||
784 !netdev->dcbnl_ops->setpgtccfgrx ||
785 !netdev->dcbnl_ops->setpgbwgcfgtx ||
786 !netdev->dcbnl_ops->setpgbwgcfgrx)
789 ret = nla_parse_nested(pg_tb, DCB_PG_ATTR_MAX,
790 tb[DCB_ATTR_PG_CFG], dcbnl_pg_nest);
794 for (i = DCB_PG_ATTR_TC_0; i <= DCB_PG_ATTR_TC_7; i++) {
798 ret = nla_parse_nested(param_tb, DCB_TC_ATTR_PARAM_MAX,
799 pg_tb[i], dcbnl_tc_param_nest);
803 pgid = DCB_ATTR_VALUE_UNDEFINED;
804 prio = DCB_ATTR_VALUE_UNDEFINED;
805 tc_pct = DCB_ATTR_VALUE_UNDEFINED;
806 up_map = DCB_ATTR_VALUE_UNDEFINED;
808 if (param_tb[DCB_TC_ATTR_PARAM_STRICT_PRIO])
810 nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_STRICT_PRIO]);
812 if (param_tb[DCB_TC_ATTR_PARAM_PGID])
813 pgid = nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_PGID]);
815 if (param_tb[DCB_TC_ATTR_PARAM_BW_PCT])
816 tc_pct = nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_BW_PCT]);
818 if (param_tb[DCB_TC_ATTR_PARAM_UP_MAPPING])
820 nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_UP_MAPPING]);
822 /* dir: Tx = 0, Rx = 1 */
825 netdev->dcbnl_ops->setpgtccfgrx(netdev,
826 i - DCB_PG_ATTR_TC_0,
827 prio, pgid, tc_pct, up_map);
830 netdev->dcbnl_ops->setpgtccfgtx(netdev,
831 i - DCB_PG_ATTR_TC_0,
832 prio, pgid, tc_pct, up_map);
836 for (i = DCB_PG_ATTR_BW_ID_0; i <= DCB_PG_ATTR_BW_ID_7; i++) {
840 tc_pct = nla_get_u8(pg_tb[i]);
842 /* dir: Tx = 0, Rx = 1 */
845 netdev->dcbnl_ops->setpgbwgcfgrx(netdev,
846 i - DCB_PG_ATTR_BW_ID_0, tc_pct);
849 netdev->dcbnl_ops->setpgbwgcfgtx(netdev,
850 i - DCB_PG_ATTR_BW_ID_0, tc_pct);
854 return nla_put_u8(skb, DCB_ATTR_PG_CFG, 0);
857 static int dcbnl_pgtx_setcfg(struct net_device *netdev, struct nlmsghdr *nlh,
858 u32 seq, struct nlattr **tb, struct sk_buff *skb)
860 return __dcbnl_pg_setcfg(netdev, nlh, seq, tb, skb, 0);
863 static int dcbnl_pgrx_setcfg(struct net_device *netdev, struct nlmsghdr *nlh,
864 u32 seq, struct nlattr **tb, struct sk_buff *skb)
866 return __dcbnl_pg_setcfg(netdev, nlh, seq, tb, skb, 1);
869 static int dcbnl_bcn_getcfg(struct net_device *netdev, struct nlmsghdr *nlh,
870 u32 seq, struct nlattr **tb, struct sk_buff *skb)
872 struct nlattr *bcn_nest;
873 struct nlattr *bcn_tb[DCB_BCN_ATTR_MAX + 1];
880 if (!tb[DCB_ATTR_BCN])
883 if (!netdev->dcbnl_ops->getbcnrp ||
884 !netdev->dcbnl_ops->getbcncfg)
887 ret = nla_parse_nested(bcn_tb, DCB_BCN_ATTR_MAX,
888 tb[DCB_ATTR_BCN], dcbnl_bcn_nest);
892 bcn_nest = nla_nest_start(skb, DCB_ATTR_BCN);
896 if (bcn_tb[DCB_BCN_ATTR_ALL])
899 for (i = DCB_BCN_ATTR_RP_0; i <= DCB_BCN_ATTR_RP_7; i++) {
900 if (!getall && !bcn_tb[i])
903 netdev->dcbnl_ops->getbcnrp(netdev, i - DCB_BCN_ATTR_RP_0,
905 ret = nla_put_u8(skb, i, value_byte);
910 for (i = DCB_BCN_ATTR_BCNA_0; i <= DCB_BCN_ATTR_RI; i++) {
911 if (!getall && !bcn_tb[i])
914 netdev->dcbnl_ops->getbcncfg(netdev, i,
916 ret = nla_put_u32(skb, i, value_integer);
921 nla_nest_end(skb, bcn_nest);
926 nla_nest_cancel(skb, bcn_nest);
930 static int dcbnl_bcn_setcfg(struct net_device *netdev, struct nlmsghdr *nlh,
931 u32 seq, struct nlattr **tb, struct sk_buff *skb)
933 struct nlattr *data[DCB_BCN_ATTR_MAX + 1];
939 if (!tb[DCB_ATTR_BCN])
942 if (!netdev->dcbnl_ops->setbcncfg ||
943 !netdev->dcbnl_ops->setbcnrp)
946 ret = nla_parse_nested(data, DCB_BCN_ATTR_MAX,
952 for (i = DCB_BCN_ATTR_RP_0; i <= DCB_BCN_ATTR_RP_7; i++) {
955 value_byte = nla_get_u8(data[i]);
956 netdev->dcbnl_ops->setbcnrp(netdev,
957 data[i]->nla_type - DCB_BCN_ATTR_RP_0, value_byte);
960 for (i = DCB_BCN_ATTR_BCNA_0; i <= DCB_BCN_ATTR_RI; i++) {
963 value_int = nla_get_u32(data[i]);
964 netdev->dcbnl_ops->setbcncfg(netdev,
968 return nla_put_u8(skb, DCB_ATTR_BCN, 0);
971 static int dcbnl_build_peer_app(struct net_device *netdev, struct sk_buff* skb,
972 int app_nested_type, int app_info_type,
975 struct dcb_peer_app_info info;
976 struct dcb_app *table = NULL;
977 const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
983 * retrieve the peer app configuration form the driver. If the driver
984 * handlers fail exit without doing anything
986 err = ops->peer_getappinfo(netdev, &info, &app_count);
987 if (!err && app_count) {
988 table = kmalloc(sizeof(struct dcb_app) * app_count, GFP_KERNEL);
992 err = ops->peer_getapptable(netdev, table);
1000 * build the message, from here on the only possible failure
1001 * is due to the skb size
1005 app = nla_nest_start(skb, app_nested_type);
1007 goto nla_put_failure;
1009 if (app_info_type &&
1010 nla_put(skb, app_info_type, sizeof(info), &info))
1011 goto nla_put_failure;
1013 for (i = 0; i < app_count; i++) {
1014 if (nla_put(skb, app_entry_type, sizeof(struct dcb_app),
1016 goto nla_put_failure;
1018 nla_nest_end(skb, app);
1027 /* Handle IEEE 802.1Qaz GET commands. */
1028 static int dcbnl_ieee_fill(struct sk_buff *skb, struct net_device *netdev)
1030 struct nlattr *ieee, *app;
1031 struct dcb_app_type *itr;
1032 const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
1036 if (nla_put_string(skb, DCB_ATTR_IFNAME, netdev->name))
1039 ieee = nla_nest_start(skb, DCB_ATTR_IEEE);
1043 if (ops->ieee_getets) {
1044 struct ieee_ets ets;
1045 err = ops->ieee_getets(netdev, &ets);
1047 nla_put(skb, DCB_ATTR_IEEE_ETS, sizeof(ets), &ets))
1051 if (ops->ieee_getmaxrate) {
1052 struct ieee_maxrate maxrate;
1053 err = ops->ieee_getmaxrate(netdev, &maxrate);
1055 err = nla_put(skb, DCB_ATTR_IEEE_MAXRATE,
1056 sizeof(maxrate), &maxrate);
1062 if (ops->ieee_getpfc) {
1063 struct ieee_pfc pfc;
1064 err = ops->ieee_getpfc(netdev, &pfc);
1066 nla_put(skb, DCB_ATTR_IEEE_PFC, sizeof(pfc), &pfc))
1070 app = nla_nest_start(skb, DCB_ATTR_IEEE_APP_TABLE);
1074 spin_lock(&dcb_lock);
1075 list_for_each_entry(itr, &dcb_app_list, list) {
1076 if (itr->ifindex == netdev->ifindex) {
1077 err = nla_put(skb, DCB_ATTR_IEEE_APP, sizeof(itr->app),
1080 spin_unlock(&dcb_lock);
1086 if (netdev->dcbnl_ops->getdcbx)
1087 dcbx = netdev->dcbnl_ops->getdcbx(netdev);
1091 spin_unlock(&dcb_lock);
1092 nla_nest_end(skb, app);
1094 /* get peer info if available */
1095 if (ops->ieee_peer_getets) {
1096 struct ieee_ets ets;
1097 err = ops->ieee_peer_getets(netdev, &ets);
1099 nla_put(skb, DCB_ATTR_IEEE_PEER_ETS, sizeof(ets), &ets))
1103 if (ops->ieee_peer_getpfc) {
1104 struct ieee_pfc pfc;
1105 err = ops->ieee_peer_getpfc(netdev, &pfc);
1107 nla_put(skb, DCB_ATTR_IEEE_PEER_PFC, sizeof(pfc), &pfc))
1111 if (ops->peer_getappinfo && ops->peer_getapptable) {
1112 err = dcbnl_build_peer_app(netdev, skb,
1113 DCB_ATTR_IEEE_PEER_APP,
1114 DCB_ATTR_IEEE_APP_UNSPEC,
1120 nla_nest_end(skb, ieee);
1122 err = nla_put_u8(skb, DCB_ATTR_DCBX, dcbx);
1130 static int dcbnl_cee_pg_fill(struct sk_buff *skb, struct net_device *dev,
1133 u8 pgid, up_map, prio, tc_pct;
1134 const struct dcbnl_rtnl_ops *ops = dev->dcbnl_ops;
1135 int i = dir ? DCB_ATTR_CEE_TX_PG : DCB_ATTR_CEE_RX_PG;
1136 struct nlattr *pg = nla_nest_start(skb, i);
1141 for (i = DCB_PG_ATTR_TC_0; i <= DCB_PG_ATTR_TC_7; i++) {
1142 struct nlattr *tc_nest = nla_nest_start(skb, i);
1147 pgid = DCB_ATTR_VALUE_UNDEFINED;
1148 prio = DCB_ATTR_VALUE_UNDEFINED;
1149 tc_pct = DCB_ATTR_VALUE_UNDEFINED;
1150 up_map = DCB_ATTR_VALUE_UNDEFINED;
1153 ops->getpgtccfgrx(dev, i - DCB_PG_ATTR_TC_0,
1154 &prio, &pgid, &tc_pct, &up_map);
1156 ops->getpgtccfgtx(dev, i - DCB_PG_ATTR_TC_0,
1157 &prio, &pgid, &tc_pct, &up_map);
1159 if (nla_put_u8(skb, DCB_TC_ATTR_PARAM_PGID, pgid) ||
1160 nla_put_u8(skb, DCB_TC_ATTR_PARAM_UP_MAPPING, up_map) ||
1161 nla_put_u8(skb, DCB_TC_ATTR_PARAM_STRICT_PRIO, prio) ||
1162 nla_put_u8(skb, DCB_TC_ATTR_PARAM_BW_PCT, tc_pct))
1164 nla_nest_end(skb, tc_nest);
1167 for (i = DCB_PG_ATTR_BW_ID_0; i <= DCB_PG_ATTR_BW_ID_7; i++) {
1168 tc_pct = DCB_ATTR_VALUE_UNDEFINED;
1171 ops->getpgbwgcfgrx(dev, i - DCB_PG_ATTR_BW_ID_0,
1174 ops->getpgbwgcfgtx(dev, i - DCB_PG_ATTR_BW_ID_0,
1176 if (nla_put_u8(skb, i, tc_pct))
1179 nla_nest_end(skb, pg);
1183 static int dcbnl_cee_fill(struct sk_buff *skb, struct net_device *netdev)
1185 struct nlattr *cee, *app;
1186 struct dcb_app_type *itr;
1187 const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
1188 int dcbx, i, err = -EMSGSIZE;
1191 if (nla_put_string(skb, DCB_ATTR_IFNAME, netdev->name))
1192 goto nla_put_failure;
1193 cee = nla_nest_start(skb, DCB_ATTR_CEE);
1195 goto nla_put_failure;
1198 if (ops->getpgtccfgtx && ops->getpgbwgcfgtx) {
1199 err = dcbnl_cee_pg_fill(skb, netdev, 1);
1201 goto nla_put_failure;
1204 if (ops->getpgtccfgrx && ops->getpgbwgcfgrx) {
1205 err = dcbnl_cee_pg_fill(skb, netdev, 0);
1207 goto nla_put_failure;
1211 if (ops->getpfccfg) {
1212 struct nlattr *pfc_nest = nla_nest_start(skb, DCB_ATTR_CEE_PFC);
1215 goto nla_put_failure;
1217 for (i = DCB_PFC_UP_ATTR_0; i <= DCB_PFC_UP_ATTR_7; i++) {
1218 ops->getpfccfg(netdev, i - DCB_PFC_UP_ATTR_0, &value);
1219 if (nla_put_u8(skb, i, value))
1220 goto nla_put_failure;
1222 nla_nest_end(skb, pfc_nest);
1226 spin_lock(&dcb_lock);
1227 app = nla_nest_start(skb, DCB_ATTR_CEE_APP_TABLE);
1231 list_for_each_entry(itr, &dcb_app_list, list) {
1232 if (itr->ifindex == netdev->ifindex) {
1233 struct nlattr *app_nest = nla_nest_start(skb,
1238 err = nla_put_u8(skb, DCB_APP_ATTR_IDTYPE,
1243 err = nla_put_u16(skb, DCB_APP_ATTR_ID,
1248 err = nla_put_u8(skb, DCB_APP_ATTR_PRIORITY,
1253 nla_nest_end(skb, app_nest);
1256 nla_nest_end(skb, app);
1258 if (netdev->dcbnl_ops->getdcbx)
1259 dcbx = netdev->dcbnl_ops->getdcbx(netdev);
1263 spin_unlock(&dcb_lock);
1265 /* features flags */
1266 if (ops->getfeatcfg) {
1267 struct nlattr *feat = nla_nest_start(skb, DCB_ATTR_CEE_FEAT);
1269 goto nla_put_failure;
1271 for (i = DCB_FEATCFG_ATTR_ALL + 1; i <= DCB_FEATCFG_ATTR_MAX;
1273 if (!ops->getfeatcfg(netdev, i, &value) &&
1274 nla_put_u8(skb, i, value))
1275 goto nla_put_failure;
1277 nla_nest_end(skb, feat);
1280 /* peer info if available */
1281 if (ops->cee_peer_getpg) {
1283 err = ops->cee_peer_getpg(netdev, &pg);
1285 nla_put(skb, DCB_ATTR_CEE_PEER_PG, sizeof(pg), &pg))
1286 goto nla_put_failure;
1289 if (ops->cee_peer_getpfc) {
1291 err = ops->cee_peer_getpfc(netdev, &pfc);
1293 nla_put(skb, DCB_ATTR_CEE_PEER_PFC, sizeof(pfc), &pfc))
1294 goto nla_put_failure;
1297 if (ops->peer_getappinfo && ops->peer_getapptable) {
1298 err = dcbnl_build_peer_app(netdev, skb,
1299 DCB_ATTR_CEE_PEER_APP_TABLE,
1300 DCB_ATTR_CEE_PEER_APP_INFO,
1301 DCB_ATTR_CEE_PEER_APP);
1303 goto nla_put_failure;
1305 nla_nest_end(skb, cee);
1309 err = nla_put_u8(skb, DCB_ATTR_DCBX, dcbx);
1311 goto nla_put_failure;
1316 spin_unlock(&dcb_lock);
1321 static int dcbnl_notify(struct net_device *dev, int event, int cmd,
1322 u32 seq, u32 portid, int dcbx_ver)
1324 struct net *net = dev_net(dev);
1325 struct sk_buff *skb;
1326 struct nlmsghdr *nlh;
1327 const struct dcbnl_rtnl_ops *ops = dev->dcbnl_ops;
1333 skb = dcbnl_newmsg(event, cmd, portid, seq, 0, &nlh);
1337 if (dcbx_ver == DCB_CAP_DCBX_VER_IEEE)
1338 err = dcbnl_ieee_fill(skb, dev);
1340 err = dcbnl_cee_fill(skb, dev);
1343 /* Report error to broadcast listeners */
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);
1355 int dcbnl_ieee_notify(struct net_device *dev, int event, int cmd,
1356 u32 seq, u32 portid)
1358 return dcbnl_notify(dev, event, cmd, seq, portid, DCB_CAP_DCBX_VER_IEEE);
1360 EXPORT_SYMBOL(dcbnl_ieee_notify);
1362 int dcbnl_cee_notify(struct net_device *dev, int event, int cmd,
1363 u32 seq, u32 portid)
1365 return dcbnl_notify(dev, event, cmd, seq, portid, DCB_CAP_DCBX_VER_CEE);
1367 EXPORT_SYMBOL(dcbnl_cee_notify);
1369 /* Handle IEEE 802.1Qaz SET commands. If any requested operation can not
1370 * be completed the entire msg is aborted and error value is returned.
1371 * No attempt is made to reconcile the case where only part of the
1372 * cmd can be completed.
1374 static int dcbnl_ieee_set(struct net_device *netdev, struct nlmsghdr *nlh,
1375 u32 seq, struct nlattr **tb, struct sk_buff *skb)
1377 const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
1378 struct nlattr *ieee[DCB_ATTR_IEEE_MAX + 1];
1384 if (!tb[DCB_ATTR_IEEE])
1387 err = nla_parse_nested(ieee, DCB_ATTR_IEEE_MAX,
1388 tb[DCB_ATTR_IEEE], dcbnl_ieee_policy);
1392 if (ieee[DCB_ATTR_IEEE_ETS] && ops->ieee_setets) {
1393 struct ieee_ets *ets = nla_data(ieee[DCB_ATTR_IEEE_ETS]);
1394 err = ops->ieee_setets(netdev, ets);
1399 if (ieee[DCB_ATTR_IEEE_MAXRATE] && ops->ieee_setmaxrate) {
1400 struct ieee_maxrate *maxrate =
1401 nla_data(ieee[DCB_ATTR_IEEE_MAXRATE]);
1402 err = ops->ieee_setmaxrate(netdev, maxrate);
1407 if (ieee[DCB_ATTR_IEEE_PFC] && ops->ieee_setpfc) {
1408 struct ieee_pfc *pfc = nla_data(ieee[DCB_ATTR_IEEE_PFC]);
1409 err = ops->ieee_setpfc(netdev, pfc);
1414 if (ieee[DCB_ATTR_IEEE_APP_TABLE]) {
1415 struct nlattr *attr;
1418 nla_for_each_nested(attr, ieee[DCB_ATTR_IEEE_APP_TABLE], rem) {
1419 struct dcb_app *app_data;
1420 if (nla_type(attr) != DCB_ATTR_IEEE_APP)
1422 app_data = nla_data(attr);
1423 if (ops->ieee_setapp)
1424 err = ops->ieee_setapp(netdev, app_data);
1426 err = dcb_ieee_setapp(netdev, app_data);
1433 err = nla_put_u8(skb, DCB_ATTR_IEEE, err);
1434 dcbnl_ieee_notify(netdev, RTM_SETDCB, DCB_CMD_IEEE_SET, seq, 0);
1438 static int dcbnl_ieee_get(struct net_device *netdev, struct nlmsghdr *nlh,
1439 u32 seq, struct nlattr **tb, struct sk_buff *skb)
1441 const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
1446 return dcbnl_ieee_fill(skb, netdev);
1449 static int dcbnl_ieee_del(struct net_device *netdev, struct nlmsghdr *nlh,
1450 u32 seq, struct nlattr **tb, struct sk_buff *skb)
1452 const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
1453 struct nlattr *ieee[DCB_ATTR_IEEE_MAX + 1];
1459 if (!tb[DCB_ATTR_IEEE])
1462 err = nla_parse_nested(ieee, DCB_ATTR_IEEE_MAX,
1463 tb[DCB_ATTR_IEEE], dcbnl_ieee_policy);
1467 if (ieee[DCB_ATTR_IEEE_APP_TABLE]) {
1468 struct nlattr *attr;
1471 nla_for_each_nested(attr, ieee[DCB_ATTR_IEEE_APP_TABLE], rem) {
1472 struct dcb_app *app_data;
1474 if (nla_type(attr) != DCB_ATTR_IEEE_APP)
1476 app_data = nla_data(attr);
1477 if (ops->ieee_delapp)
1478 err = ops->ieee_delapp(netdev, app_data);
1480 err = dcb_ieee_delapp(netdev, app_data);
1487 err = nla_put_u8(skb, DCB_ATTR_IEEE, err);
1488 dcbnl_ieee_notify(netdev, RTM_SETDCB, DCB_CMD_IEEE_DEL, seq, 0);
1493 /* DCBX configuration */
1494 static int dcbnl_getdcbx(struct net_device *netdev, struct nlmsghdr *nlh,
1495 u32 seq, struct nlattr **tb, struct sk_buff *skb)
1497 if (!netdev->dcbnl_ops->getdcbx)
1500 return nla_put_u8(skb, DCB_ATTR_DCBX,
1501 netdev->dcbnl_ops->getdcbx(netdev));
1504 static int dcbnl_setdcbx(struct net_device *netdev, struct nlmsghdr *nlh,
1505 u32 seq, struct nlattr **tb, struct sk_buff *skb)
1509 if (!netdev->dcbnl_ops->setdcbx)
1512 if (!tb[DCB_ATTR_DCBX])
1515 value = nla_get_u8(tb[DCB_ATTR_DCBX]);
1517 return nla_put_u8(skb, DCB_ATTR_DCBX,
1518 netdev->dcbnl_ops->setdcbx(netdev, value));
1521 static int dcbnl_getfeatcfg(struct net_device *netdev, struct nlmsghdr *nlh,
1522 u32 seq, struct nlattr **tb, struct sk_buff *skb)
1524 struct nlattr *data[DCB_FEATCFG_ATTR_MAX + 1], *nest;
1529 if (!netdev->dcbnl_ops->getfeatcfg)
1532 if (!tb[DCB_ATTR_FEATCFG])
1535 ret = nla_parse_nested(data, DCB_FEATCFG_ATTR_MAX, tb[DCB_ATTR_FEATCFG],
1536 dcbnl_featcfg_nest);
1540 nest = nla_nest_start(skb, DCB_ATTR_FEATCFG);
1544 if (data[DCB_FEATCFG_ATTR_ALL])
1547 for (i = DCB_FEATCFG_ATTR_ALL+1; i <= DCB_FEATCFG_ATTR_MAX; i++) {
1548 if (!getall && !data[i])
1551 ret = netdev->dcbnl_ops->getfeatcfg(netdev, i, &value);
1553 ret = nla_put_u8(skb, i, value);
1556 nla_nest_cancel(skb, nest);
1557 goto nla_put_failure;
1560 nla_nest_end(skb, nest);
1566 static int dcbnl_setfeatcfg(struct net_device *netdev, struct nlmsghdr *nlh,
1567 u32 seq, struct nlattr **tb, struct sk_buff *skb)
1569 struct nlattr *data[DCB_FEATCFG_ATTR_MAX + 1];
1573 if (!netdev->dcbnl_ops->setfeatcfg)
1576 if (!tb[DCB_ATTR_FEATCFG])
1579 ret = nla_parse_nested(data, DCB_FEATCFG_ATTR_MAX, tb[DCB_ATTR_FEATCFG],
1580 dcbnl_featcfg_nest);
1585 for (i = DCB_FEATCFG_ATTR_ALL+1; i <= DCB_FEATCFG_ATTR_MAX; i++) {
1586 if (data[i] == NULL)
1589 value = nla_get_u8(data[i]);
1591 ret = netdev->dcbnl_ops->setfeatcfg(netdev, i, value);
1597 ret = nla_put_u8(skb, DCB_ATTR_FEATCFG, ret);
1602 /* Handle CEE DCBX GET commands. */
1603 static int dcbnl_cee_get(struct net_device *netdev, struct nlmsghdr *nlh,
1604 u32 seq, struct nlattr **tb, struct sk_buff *skb)
1606 const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
1611 return dcbnl_cee_fill(skb, netdev);
1615 /* reply netlink message type */
1618 /* function to fill message contents */
1619 int (*cb)(struct net_device *, struct nlmsghdr *, u32,
1620 struct nlattr **, struct sk_buff *);
1623 static const struct reply_func reply_funcs[DCB_CMD_MAX+1] = {
1624 [DCB_CMD_GSTATE] = { RTM_GETDCB, dcbnl_getstate },
1625 [DCB_CMD_SSTATE] = { RTM_SETDCB, dcbnl_setstate },
1626 [DCB_CMD_PFC_GCFG] = { RTM_GETDCB, dcbnl_getpfccfg },
1627 [DCB_CMD_PFC_SCFG] = { RTM_SETDCB, dcbnl_setpfccfg },
1628 [DCB_CMD_GPERM_HWADDR] = { RTM_GETDCB, dcbnl_getperm_hwaddr },
1629 [DCB_CMD_GCAP] = { RTM_GETDCB, dcbnl_getcap },
1630 [DCB_CMD_GNUMTCS] = { RTM_GETDCB, dcbnl_getnumtcs },
1631 [DCB_CMD_SNUMTCS] = { RTM_SETDCB, dcbnl_setnumtcs },
1632 [DCB_CMD_PFC_GSTATE] = { RTM_GETDCB, dcbnl_getpfcstate },
1633 [DCB_CMD_PFC_SSTATE] = { RTM_SETDCB, dcbnl_setpfcstate },
1634 [DCB_CMD_GAPP] = { RTM_GETDCB, dcbnl_getapp },
1635 [DCB_CMD_SAPP] = { RTM_SETDCB, dcbnl_setapp },
1636 [DCB_CMD_PGTX_GCFG] = { RTM_GETDCB, dcbnl_pgtx_getcfg },
1637 [DCB_CMD_PGTX_SCFG] = { RTM_SETDCB, dcbnl_pgtx_setcfg },
1638 [DCB_CMD_PGRX_GCFG] = { RTM_GETDCB, dcbnl_pgrx_getcfg },
1639 [DCB_CMD_PGRX_SCFG] = { RTM_SETDCB, dcbnl_pgrx_setcfg },
1640 [DCB_CMD_SET_ALL] = { RTM_SETDCB, dcbnl_setall },
1641 [DCB_CMD_BCN_GCFG] = { RTM_GETDCB, dcbnl_bcn_getcfg },
1642 [DCB_CMD_BCN_SCFG] = { RTM_SETDCB, dcbnl_bcn_setcfg },
1643 [DCB_CMD_IEEE_GET] = { RTM_GETDCB, dcbnl_ieee_get },
1644 [DCB_CMD_IEEE_SET] = { RTM_SETDCB, dcbnl_ieee_set },
1645 [DCB_CMD_IEEE_DEL] = { RTM_SETDCB, dcbnl_ieee_del },
1646 [DCB_CMD_GDCBX] = { RTM_GETDCB, dcbnl_getdcbx },
1647 [DCB_CMD_SDCBX] = { RTM_SETDCB, dcbnl_setdcbx },
1648 [DCB_CMD_GFEATCFG] = { RTM_GETDCB, dcbnl_getfeatcfg },
1649 [DCB_CMD_SFEATCFG] = { RTM_SETDCB, dcbnl_setfeatcfg },
1650 [DCB_CMD_CEE_GET] = { RTM_GETDCB, dcbnl_cee_get },
1653 static int dcb_doit(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
1655 struct net *net = sock_net(skb->sk);
1656 struct net_device *netdev;
1657 struct dcbmsg *dcb = nlmsg_data(nlh);
1658 struct nlattr *tb[DCB_ATTR_MAX + 1];
1659 u32 portid = skb ? NETLINK_CB(skb).portid : 0;
1661 struct sk_buff *reply_skb;
1662 struct nlmsghdr *reply_nlh = NULL;
1663 const struct reply_func *fn;
1665 if (!net_eq(net, &init_net))
1668 ret = nlmsg_parse(nlh, sizeof(*dcb), tb, DCB_ATTR_MAX,
1673 if (dcb->cmd > DCB_CMD_MAX)
1676 /* check if a reply function has been defined for the command */
1677 fn = &reply_funcs[dcb->cmd];
1681 if (!tb[DCB_ATTR_IFNAME])
1684 netdev = dev_get_by_name(&init_net, nla_data(tb[DCB_ATTR_IFNAME]));
1688 if (!netdev->dcbnl_ops) {
1693 reply_skb = dcbnl_newmsg(fn->type, dcb->cmd, portid, nlh->nlmsg_seq,
1694 nlh->nlmsg_flags, &reply_nlh);
1700 ret = fn->cb(netdev, nlh, nlh->nlmsg_seq, tb, reply_skb);
1702 nlmsg_free(reply_skb);
1706 nlmsg_end(reply_skb, reply_nlh);
1708 ret = rtnl_unicast(reply_skb, &init_net, portid);
1714 static struct dcb_app_type *dcb_app_lookup(const struct dcb_app *app,
1715 int ifindex, int prio)
1717 struct dcb_app_type *itr;
1719 list_for_each_entry(itr, &dcb_app_list, list) {
1720 if (itr->app.selector == app->selector &&
1721 itr->app.protocol == app->protocol &&
1722 itr->ifindex == ifindex &&
1723 (!prio || itr->app.priority == prio))
1730 static int dcb_app_add(const struct dcb_app *app, int ifindex)
1732 struct dcb_app_type *entry;
1734 entry = kmalloc(sizeof(*entry), GFP_ATOMIC);
1738 memcpy(&entry->app, app, sizeof(*app));
1739 entry->ifindex = ifindex;
1740 list_add(&entry->list, &dcb_app_list);
1746 * dcb_getapp - retrieve the DCBX application user priority
1748 * On success returns a non-zero 802.1p user priority bitmap
1749 * otherwise returns 0 as the invalid user priority bitmap to
1750 * indicate an error.
1752 u8 dcb_getapp(struct net_device *dev, struct dcb_app *app)
1754 struct dcb_app_type *itr;
1757 spin_lock(&dcb_lock);
1758 if ((itr = dcb_app_lookup(app, dev->ifindex, 0)))
1759 prio = itr->app.priority;
1760 spin_unlock(&dcb_lock);
1764 EXPORT_SYMBOL(dcb_getapp);
1767 * dcb_setapp - add CEE dcb application data to app list
1769 * Priority 0 is an invalid priority in CEE spec. This routine
1770 * removes applications from the app list if the priority is
1773 int dcb_setapp(struct net_device *dev, struct dcb_app *new)
1775 struct dcb_app_type *itr;
1776 struct dcb_app_type event;
1779 event.ifindex = dev->ifindex;
1780 memcpy(&event.app, new, sizeof(event.app));
1781 if (dev->dcbnl_ops->getdcbx)
1782 event.dcbx = dev->dcbnl_ops->getdcbx(dev);
1784 spin_lock(&dcb_lock);
1785 /* Search for existing match and replace */
1786 if ((itr = dcb_app_lookup(new, dev->ifindex, 0))) {
1788 itr->app.priority = new->priority;
1790 list_del(&itr->list);
1795 /* App type does not exist add new application type */
1797 err = dcb_app_add(new, dev->ifindex);
1799 spin_unlock(&dcb_lock);
1801 call_dcbevent_notifiers(DCB_APP_EVENT, &event);
1804 EXPORT_SYMBOL(dcb_setapp);
1807 * dcb_ieee_getapp_mask - retrieve the IEEE DCB application priority
1809 * Helper routine which on success returns a non-zero 802.1Qaz user
1810 * priority bitmap otherwise returns 0 to indicate the dcb_app was
1811 * not found in APP list.
1813 u8 dcb_ieee_getapp_mask(struct net_device *dev, struct dcb_app *app)
1815 struct dcb_app_type *itr;
1818 spin_lock(&dcb_lock);
1819 if ((itr = dcb_app_lookup(app, dev->ifindex, 0)))
1820 prio |= 1 << itr->app.priority;
1821 spin_unlock(&dcb_lock);
1825 EXPORT_SYMBOL(dcb_ieee_getapp_mask);
1828 * dcb_ieee_setapp - add IEEE dcb application data to app list
1830 * This adds Application data to the list. Multiple application
1831 * entries may exists for the same selector and protocol as long
1832 * as the priorities are different.
1834 int dcb_ieee_setapp(struct net_device *dev, struct dcb_app *new)
1836 struct dcb_app_type event;
1839 event.ifindex = dev->ifindex;
1840 memcpy(&event.app, new, sizeof(event.app));
1841 if (dev->dcbnl_ops->getdcbx)
1842 event.dcbx = dev->dcbnl_ops->getdcbx(dev);
1844 spin_lock(&dcb_lock);
1845 /* Search for existing match and abort if found */
1846 if (dcb_app_lookup(new, dev->ifindex, new->priority)) {
1851 err = dcb_app_add(new, dev->ifindex);
1853 spin_unlock(&dcb_lock);
1855 call_dcbevent_notifiers(DCB_APP_EVENT, &event);
1858 EXPORT_SYMBOL(dcb_ieee_setapp);
1861 * dcb_ieee_delapp - delete IEEE dcb application data from list
1863 * This removes a matching APP data from the APP list
1865 int dcb_ieee_delapp(struct net_device *dev, struct dcb_app *del)
1867 struct dcb_app_type *itr;
1868 struct dcb_app_type event;
1871 event.ifindex = dev->ifindex;
1872 memcpy(&event.app, del, sizeof(event.app));
1873 if (dev->dcbnl_ops->getdcbx)
1874 event.dcbx = dev->dcbnl_ops->getdcbx(dev);
1876 spin_lock(&dcb_lock);
1877 /* Search for existing match and remove it. */
1878 if ((itr = dcb_app_lookup(del, dev->ifindex, del->priority))) {
1879 list_del(&itr->list);
1884 spin_unlock(&dcb_lock);
1886 call_dcbevent_notifiers(DCB_APP_EVENT, &event);
1889 EXPORT_SYMBOL(dcb_ieee_delapp);
1891 static void dcb_flushapp(void)
1893 struct dcb_app_type *app;
1894 struct dcb_app_type *tmp;
1896 spin_lock(&dcb_lock);
1897 list_for_each_entry_safe(app, tmp, &dcb_app_list, list) {
1898 list_del(&app->list);
1901 spin_unlock(&dcb_lock);
1904 static int __init dcbnl_init(void)
1906 INIT_LIST_HEAD(&dcb_app_list);
1908 rtnl_register(PF_UNSPEC, RTM_GETDCB, dcb_doit, NULL, NULL);
1909 rtnl_register(PF_UNSPEC, RTM_SETDCB, dcb_doit, NULL, NULL);
1913 module_init(dcbnl_init);
1915 static void __exit dcbnl_exit(void)
1917 rtnl_unregister(PF_UNSPEC, RTM_GETDCB);
1918 rtnl_unregister(PF_UNSPEC, RTM_SETDCB);
1921 module_exit(dcbnl_exit);