2 * Copyright (c) 2008, 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 <net/netlink.h>
23 #include <net/rtnetlink.h>
24 #include <linux/dcbnl.h>
25 #include <linux/rtnetlink.h>
29 * Data Center Bridging (DCB) is a collection of Ethernet enhancements
30 * intended to allow network traffic with differing requirements
31 * (highly reliable, no drops vs. best effort vs. low latency) to operate
32 * and co-exist on Ethernet. Current DCB features are:
34 * Enhanced Transmission Selection (aka Priority Grouping [PG]) - provides a
35 * framework for assigning bandwidth guarantees to traffic classes.
37 * Priority-based Flow Control (PFC) - provides a flow control mechanism which
38 * can work independently for each 802.1p priority.
40 * Congestion Notification - provides a mechanism for end-to-end congestion
41 * control for protocols which do not have built-in congestion management.
43 * More information about the emerging standards for these Ethernet features
44 * can be found at: http://www.ieee802.org/1/pages/dcbridges.html
46 * This file implements an rtnetlink interface to allow configuration of DCB
47 * features for capable devices.
50 MODULE_AUTHOR("Lucy Liu, <lucy.liu@intel.com>");
51 MODULE_DESCRIPTION("Data Center Bridging generic netlink interface");
52 MODULE_LICENSE("GPL");
54 /**************** DCB attribute policies *************************************/
56 /* DCB netlink attributes policy */
57 static struct nla_policy dcbnl_rtnl_policy[DCB_ATTR_MAX + 1] = {
58 [DCB_ATTR_IFNAME] = {.type = NLA_STRING, .len = IFNAMSIZ - 1},
59 [DCB_ATTR_STATE] = {.type = NLA_U8},
60 [DCB_ATTR_PFC_CFG] = {.type = NLA_NESTED},
61 [DCB_ATTR_PG_CFG] = {.type = NLA_NESTED},
62 [DCB_ATTR_SET_ALL] = {.type = NLA_U8},
63 [DCB_ATTR_PERM_HWADDR] = {.type = NLA_FLAG},
64 [DCB_ATTR_CAP] = {.type = NLA_NESTED},
65 [DCB_ATTR_PFC_STATE] = {.type = NLA_U8},
68 /* DCB priority flow control to User Priority nested attributes */
69 static struct nla_policy dcbnl_pfc_up_nest[DCB_PFC_UP_ATTR_MAX + 1] = {
70 [DCB_PFC_UP_ATTR_0] = {.type = NLA_U8},
71 [DCB_PFC_UP_ATTR_1] = {.type = NLA_U8},
72 [DCB_PFC_UP_ATTR_2] = {.type = NLA_U8},
73 [DCB_PFC_UP_ATTR_3] = {.type = NLA_U8},
74 [DCB_PFC_UP_ATTR_4] = {.type = NLA_U8},
75 [DCB_PFC_UP_ATTR_5] = {.type = NLA_U8},
76 [DCB_PFC_UP_ATTR_6] = {.type = NLA_U8},
77 [DCB_PFC_UP_ATTR_7] = {.type = NLA_U8},
78 [DCB_PFC_UP_ATTR_ALL] = {.type = NLA_FLAG},
81 /* DCB priority grouping nested attributes */
82 static struct nla_policy dcbnl_pg_nest[DCB_PG_ATTR_MAX + 1] = {
83 [DCB_PG_ATTR_TC_0] = {.type = NLA_NESTED},
84 [DCB_PG_ATTR_TC_1] = {.type = NLA_NESTED},
85 [DCB_PG_ATTR_TC_2] = {.type = NLA_NESTED},
86 [DCB_PG_ATTR_TC_3] = {.type = NLA_NESTED},
87 [DCB_PG_ATTR_TC_4] = {.type = NLA_NESTED},
88 [DCB_PG_ATTR_TC_5] = {.type = NLA_NESTED},
89 [DCB_PG_ATTR_TC_6] = {.type = NLA_NESTED},
90 [DCB_PG_ATTR_TC_7] = {.type = NLA_NESTED},
91 [DCB_PG_ATTR_TC_ALL] = {.type = NLA_NESTED},
92 [DCB_PG_ATTR_BW_ID_0] = {.type = NLA_U8},
93 [DCB_PG_ATTR_BW_ID_1] = {.type = NLA_U8},
94 [DCB_PG_ATTR_BW_ID_2] = {.type = NLA_U8},
95 [DCB_PG_ATTR_BW_ID_3] = {.type = NLA_U8},
96 [DCB_PG_ATTR_BW_ID_4] = {.type = NLA_U8},
97 [DCB_PG_ATTR_BW_ID_5] = {.type = NLA_U8},
98 [DCB_PG_ATTR_BW_ID_6] = {.type = NLA_U8},
99 [DCB_PG_ATTR_BW_ID_7] = {.type = NLA_U8},
100 [DCB_PG_ATTR_BW_ID_ALL] = {.type = NLA_FLAG},
103 /* DCB traffic class nested attributes. */
104 static struct nla_policy dcbnl_tc_param_nest[DCB_TC_ATTR_PARAM_MAX + 1] = {
105 [DCB_TC_ATTR_PARAM_PGID] = {.type = NLA_U8},
106 [DCB_TC_ATTR_PARAM_UP_MAPPING] = {.type = NLA_U8},
107 [DCB_TC_ATTR_PARAM_STRICT_PRIO] = {.type = NLA_U8},
108 [DCB_TC_ATTR_PARAM_BW_PCT] = {.type = NLA_U8},
109 [DCB_TC_ATTR_PARAM_ALL] = {.type = NLA_FLAG},
112 /* DCB capabilities nested attributes. */
113 static struct nla_policy dcbnl_cap_nest[DCB_CAP_ATTR_MAX + 1] = {
114 [DCB_CAP_ATTR_ALL] = {.type = NLA_FLAG},
115 [DCB_CAP_ATTR_PG] = {.type = NLA_U8},
116 [DCB_CAP_ATTR_PFC] = {.type = NLA_U8},
117 [DCB_CAP_ATTR_UP2TC] = {.type = NLA_U8},
118 [DCB_CAP_ATTR_PG_TCS] = {.type = NLA_U8},
119 [DCB_CAP_ATTR_PFC_TCS] = {.type = NLA_U8},
120 [DCB_CAP_ATTR_GSP] = {.type = NLA_U8},
121 [DCB_CAP_ATTR_BCN] = {.type = NLA_U8},
124 /* DCB capabilities nested attributes. */
125 static struct nla_policy dcbnl_numtcs_nest[DCB_NUMTCS_ATTR_MAX + 1] = {
126 [DCB_NUMTCS_ATTR_ALL] = {.type = NLA_FLAG},
127 [DCB_NUMTCS_ATTR_PG] = {.type = NLA_U8},
128 [DCB_NUMTCS_ATTR_PFC] = {.type = NLA_U8},
131 /* standard netlink reply call */
132 static int dcbnl_reply(u8 value, u8 event, u8 cmd, u8 attr, u32 pid,
135 struct sk_buff *dcbnl_skb;
137 struct nlmsghdr *nlh;
140 dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
144 nlh = NLMSG_NEW(dcbnl_skb, pid, seq, event, sizeof(*dcb), flags);
146 dcb = NLMSG_DATA(nlh);
147 dcb->dcb_family = AF_UNSPEC;
151 ret = nla_put_u8(dcbnl_skb, attr, value);
155 /* end the message, assign the nlmsg_len. */
156 nlmsg_end(dcbnl_skb, nlh);
157 ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
168 static int dcbnl_getstate(struct net_device *netdev, struct nlattr **tb,
169 u32 pid, u32 seq, u16 flags)
173 /* if (!tb[DCB_ATTR_STATE] || !netdev->dcbnl_ops->getstate) */
174 if (!netdev->dcbnl_ops->getstate)
177 ret = dcbnl_reply(netdev->dcbnl_ops->getstate(netdev), RTM_GETDCB,
178 DCB_CMD_GSTATE, DCB_ATTR_STATE, pid, seq, flags);
183 static int dcbnl_getpfccfg(struct net_device *netdev, struct nlattr **tb,
184 u32 pid, u32 seq, u16 flags)
186 struct sk_buff *dcbnl_skb;
187 struct nlmsghdr *nlh;
189 struct nlattr *data[DCB_PFC_UP_ATTR_MAX + 1], *nest;
195 if (!tb[DCB_ATTR_PFC_CFG] || !netdev->dcbnl_ops->getpfccfg)
198 ret = nla_parse_nested(data, DCB_PFC_UP_ATTR_MAX,
199 tb[DCB_ATTR_PFC_CFG],
204 dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
208 nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
210 dcb = NLMSG_DATA(nlh);
211 dcb->dcb_family = AF_UNSPEC;
212 dcb->cmd = DCB_CMD_PFC_GCFG;
214 nest = nla_nest_start(dcbnl_skb, DCB_ATTR_PFC_CFG);
218 if (data[DCB_PFC_UP_ATTR_ALL])
221 for (i = DCB_PFC_UP_ATTR_0; i <= DCB_PFC_UP_ATTR_7; i++) {
222 if (!getall && !data[i])
225 netdev->dcbnl_ops->getpfccfg(netdev, i - DCB_PFC_UP_ATTR_0,
227 ret = nla_put_u8(dcbnl_skb, i, value);
230 nla_nest_cancel(dcbnl_skb, nest);
234 nla_nest_end(dcbnl_skb, nest);
236 nlmsg_end(dcbnl_skb, nlh);
238 ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
250 static int dcbnl_getperm_hwaddr(struct net_device *netdev, struct nlattr **tb,
251 u32 pid, u32 seq, u16 flags)
253 struct sk_buff *dcbnl_skb;
254 struct nlmsghdr *nlh;
256 u8 perm_addr[MAX_ADDR_LEN];
259 if (!netdev->dcbnl_ops->getpermhwaddr)
262 dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
266 nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
268 dcb = NLMSG_DATA(nlh);
269 dcb->dcb_family = AF_UNSPEC;
270 dcb->cmd = DCB_CMD_GPERM_HWADDR;
272 netdev->dcbnl_ops->getpermhwaddr(netdev, perm_addr);
274 ret = nla_put(dcbnl_skb, DCB_ATTR_PERM_HWADDR, sizeof(perm_addr),
277 nlmsg_end(dcbnl_skb, nlh);
279 ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
292 static int dcbnl_getcap(struct net_device *netdev, struct nlattr **tb,
293 u32 pid, u32 seq, u16 flags)
295 struct sk_buff *dcbnl_skb;
296 struct nlmsghdr *nlh;
298 struct nlattr *data[DCB_CAP_ATTR_MAX + 1], *nest;
304 if (!tb[DCB_ATTR_CAP] || !netdev->dcbnl_ops->getcap)
307 ret = nla_parse_nested(data, DCB_CAP_ATTR_MAX, tb[DCB_ATTR_CAP],
312 dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
316 nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
318 dcb = NLMSG_DATA(nlh);
319 dcb->dcb_family = AF_UNSPEC;
320 dcb->cmd = DCB_CMD_GCAP;
322 nest = nla_nest_start(dcbnl_skb, DCB_ATTR_CAP);
326 if (data[DCB_CAP_ATTR_ALL])
329 for (i = DCB_CAP_ATTR_ALL+1; i <= DCB_CAP_ATTR_MAX; i++) {
330 if (!getall && !data[i])
333 if (!netdev->dcbnl_ops->getcap(netdev, i, &value)) {
334 ret = nla_put_u8(dcbnl_skb, i, value);
337 nla_nest_cancel(dcbnl_skb, nest);
342 nla_nest_end(dcbnl_skb, nest);
344 nlmsg_end(dcbnl_skb, nlh);
346 ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
358 static int dcbnl_getnumtcs(struct net_device *netdev, struct nlattr **tb,
359 u32 pid, u32 seq, u16 flags)
361 struct sk_buff *dcbnl_skb;
362 struct nlmsghdr *nlh;
364 struct nlattr *data[DCB_NUMTCS_ATTR_MAX + 1], *nest;
370 if (!tb[DCB_ATTR_NUMTCS] || !netdev->dcbnl_ops->getnumtcs)
373 ret = nla_parse_nested(data, DCB_NUMTCS_ATTR_MAX, tb[DCB_ATTR_NUMTCS],
380 dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
386 nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
388 dcb = NLMSG_DATA(nlh);
389 dcb->dcb_family = AF_UNSPEC;
390 dcb->cmd = DCB_CMD_GNUMTCS;
392 nest = nla_nest_start(dcbnl_skb, DCB_ATTR_NUMTCS);
398 if (data[DCB_NUMTCS_ATTR_ALL])
401 for (i = DCB_NUMTCS_ATTR_ALL+1; i <= DCB_NUMTCS_ATTR_MAX; i++) {
402 if (!getall && !data[i])
405 ret = netdev->dcbnl_ops->getnumtcs(netdev, i, &value);
407 ret = nla_put_u8(dcbnl_skb, i, value);
410 nla_nest_cancel(dcbnl_skb, nest);
418 nla_nest_end(dcbnl_skb, nest);
420 nlmsg_end(dcbnl_skb, nlh);
422 ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
436 static int dcbnl_setnumtcs(struct net_device *netdev, struct nlattr **tb,
437 u32 pid, u32 seq, u16 flags)
439 struct nlattr *data[DCB_NUMTCS_ATTR_MAX + 1];
444 if (!tb[DCB_ATTR_NUMTCS] || !netdev->dcbnl_ops->setstate)
447 ret = nla_parse_nested(data, DCB_NUMTCS_ATTR_MAX, tb[DCB_ATTR_NUMTCS],
455 for (i = DCB_NUMTCS_ATTR_ALL+1; i <= DCB_NUMTCS_ATTR_MAX; i++) {
459 value = nla_get_u8(data[i]);
461 ret = netdev->dcbnl_ops->setnumtcs(netdev, i, value);
468 ret = dcbnl_reply(!!ret, RTM_SETDCB, DCB_CMD_SNUMTCS,
469 DCB_ATTR_NUMTCS, pid, seq, flags);
475 static int dcbnl_getpfcstate(struct net_device *netdev, struct nlattr **tb,
476 u32 pid, u32 seq, u16 flags)
480 if (!netdev->dcbnl_ops->getpfcstate)
483 ret = dcbnl_reply(netdev->dcbnl_ops->getpfcstate(netdev), RTM_GETDCB,
484 DCB_CMD_PFC_GSTATE, DCB_ATTR_PFC_STATE,
490 static int dcbnl_setpfcstate(struct net_device *netdev, struct nlattr **tb,
491 u32 pid, u32 seq, u16 flags)
496 if (!tb[DCB_ATTR_PFC_STATE] || !netdev->dcbnl_ops->setpfcstate)
499 value = nla_get_u8(tb[DCB_ATTR_PFC_STATE]);
501 netdev->dcbnl_ops->setpfcstate(netdev, value);
503 ret = dcbnl_reply(0, RTM_SETDCB, DCB_CMD_PFC_SSTATE, DCB_ATTR_PFC_STATE,
509 static int __dcbnl_pg_getcfg(struct net_device *netdev, struct nlattr **tb,
510 u32 pid, u32 seq, u16 flags, int dir)
512 struct sk_buff *dcbnl_skb;
513 struct nlmsghdr *nlh;
515 struct nlattr *pg_nest, *param_nest, *data;
516 struct nlattr *pg_tb[DCB_PG_ATTR_MAX + 1];
517 struct nlattr *param_tb[DCB_TC_ATTR_PARAM_MAX + 1];
518 u8 prio, pgid, tc_pct, up_map;
523 if (!tb[DCB_ATTR_PG_CFG] ||
524 !netdev->dcbnl_ops->getpgtccfgtx ||
525 !netdev->dcbnl_ops->getpgtccfgrx ||
526 !netdev->dcbnl_ops->getpgbwgcfgtx ||
527 !netdev->dcbnl_ops->getpgbwgcfgrx)
530 ret = nla_parse_nested(pg_tb, DCB_PG_ATTR_MAX,
531 tb[DCB_ATTR_PG_CFG], dcbnl_pg_nest);
536 dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
540 nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
542 dcb = NLMSG_DATA(nlh);
543 dcb->dcb_family = AF_UNSPEC;
544 dcb->cmd = (dir) ? DCB_CMD_PGRX_GCFG : DCB_CMD_PGTX_GCFG;
546 pg_nest = nla_nest_start(dcbnl_skb, DCB_ATTR_PG_CFG);
550 if (pg_tb[DCB_PG_ATTR_TC_ALL])
553 for (i = DCB_PG_ATTR_TC_0; i <= DCB_PG_ATTR_TC_7; i++) {
554 if (!getall && !pg_tb[i])
557 if (pg_tb[DCB_PG_ATTR_TC_ALL])
558 data = pg_tb[DCB_PG_ATTR_TC_ALL];
561 ret = nla_parse_nested(param_tb, DCB_TC_ATTR_PARAM_MAX,
562 data, dcbnl_tc_param_nest);
566 param_nest = nla_nest_start(dcbnl_skb, i);
570 pgid = DCB_ATTR_VALUE_UNDEFINED;
571 prio = DCB_ATTR_VALUE_UNDEFINED;
572 tc_pct = DCB_ATTR_VALUE_UNDEFINED;
573 up_map = DCB_ATTR_VALUE_UNDEFINED;
577 netdev->dcbnl_ops->getpgtccfgrx(netdev,
578 i - DCB_PG_ATTR_TC_0, &prio,
579 &pgid, &tc_pct, &up_map);
582 netdev->dcbnl_ops->getpgtccfgtx(netdev,
583 i - DCB_PG_ATTR_TC_0, &prio,
584 &pgid, &tc_pct, &up_map);
587 if (param_tb[DCB_TC_ATTR_PARAM_PGID] ||
588 param_tb[DCB_TC_ATTR_PARAM_ALL]) {
589 ret = nla_put_u8(dcbnl_skb,
590 DCB_TC_ATTR_PARAM_PGID, pgid);
594 if (param_tb[DCB_TC_ATTR_PARAM_UP_MAPPING] ||
595 param_tb[DCB_TC_ATTR_PARAM_ALL]) {
596 ret = nla_put_u8(dcbnl_skb,
597 DCB_TC_ATTR_PARAM_UP_MAPPING, up_map);
601 if (param_tb[DCB_TC_ATTR_PARAM_STRICT_PRIO] ||
602 param_tb[DCB_TC_ATTR_PARAM_ALL]) {
603 ret = nla_put_u8(dcbnl_skb,
604 DCB_TC_ATTR_PARAM_STRICT_PRIO, prio);
608 if (param_tb[DCB_TC_ATTR_PARAM_BW_PCT] ||
609 param_tb[DCB_TC_ATTR_PARAM_ALL]) {
610 ret = nla_put_u8(dcbnl_skb, DCB_TC_ATTR_PARAM_BW_PCT,
615 nla_nest_end(dcbnl_skb, param_nest);
618 if (pg_tb[DCB_PG_ATTR_BW_ID_ALL])
623 for (i = DCB_PG_ATTR_BW_ID_0; i <= DCB_PG_ATTR_BW_ID_7; i++) {
624 if (!getall && !pg_tb[i])
627 tc_pct = DCB_ATTR_VALUE_UNDEFINED;
631 netdev->dcbnl_ops->getpgbwgcfgrx(netdev,
632 i - DCB_PG_ATTR_BW_ID_0, &tc_pct);
635 netdev->dcbnl_ops->getpgbwgcfgtx(netdev,
636 i - DCB_PG_ATTR_BW_ID_0, &tc_pct);
638 ret = nla_put_u8(dcbnl_skb, i, tc_pct);
644 nla_nest_end(dcbnl_skb, pg_nest);
646 nlmsg_end(dcbnl_skb, nlh);
648 ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
655 nla_nest_cancel(dcbnl_skb, param_nest);
657 nla_nest_cancel(dcbnl_skb, pg_nest);
666 static int dcbnl_pgtx_getcfg(struct net_device *netdev, struct nlattr **tb,
667 u32 pid, u32 seq, u16 flags)
669 return __dcbnl_pg_getcfg(netdev, tb, pid, seq, flags, 0);
672 static int dcbnl_pgrx_getcfg(struct net_device *netdev, struct nlattr **tb,
673 u32 pid, u32 seq, u16 flags)
675 return __dcbnl_pg_getcfg(netdev, tb, pid, seq, flags, 1);
678 static int dcbnl_setstate(struct net_device *netdev, struct nlattr **tb,
679 u32 pid, u32 seq, u16 flags)
684 if (!tb[DCB_ATTR_STATE] || !netdev->dcbnl_ops->setstate)
687 value = nla_get_u8(tb[DCB_ATTR_STATE]);
689 netdev->dcbnl_ops->setstate(netdev, value);
691 ret = dcbnl_reply(0, RTM_SETDCB, DCB_CMD_SSTATE, DCB_ATTR_STATE,
697 static int dcbnl_setpfccfg(struct net_device *netdev, struct nlattr **tb,
698 u32 pid, u32 seq, u16 flags)
700 struct nlattr *data[DCB_PFC_UP_ATTR_MAX + 1];
705 if (!tb[DCB_ATTR_PFC_CFG] || !netdev->dcbnl_ops->setpfccfg)
708 ret = nla_parse_nested(data, DCB_PFC_UP_ATTR_MAX,
709 tb[DCB_ATTR_PFC_CFG],
714 for (i = DCB_PFC_UP_ATTR_0; i <= DCB_PFC_UP_ATTR_7; i++) {
717 value = nla_get_u8(data[i]);
718 netdev->dcbnl_ops->setpfccfg(netdev,
719 data[i]->nla_type - DCB_PFC_UP_ATTR_0, value);
722 ret = dcbnl_reply(0, RTM_SETDCB, DCB_CMD_PFC_SCFG, DCB_ATTR_PFC_CFG,
728 static int dcbnl_setall(struct net_device *netdev, struct nlattr **tb,
729 u32 pid, u32 seq, u16 flags)
733 if (!tb[DCB_ATTR_SET_ALL] || !netdev->dcbnl_ops->setall)
736 ret = dcbnl_reply(netdev->dcbnl_ops->setall(netdev), RTM_SETDCB,
737 DCB_CMD_SET_ALL, DCB_ATTR_SET_ALL, pid, seq, flags);
742 static int __dcbnl_pg_setcfg(struct net_device *netdev, struct nlattr **tb,
743 u32 pid, u32 seq, u16 flags, int dir)
745 struct nlattr *pg_tb[DCB_PG_ATTR_MAX + 1];
746 struct nlattr *param_tb[DCB_TC_ATTR_PARAM_MAX + 1];
754 if (!tb[DCB_ATTR_PG_CFG] ||
755 !netdev->dcbnl_ops->setpgtccfgtx ||
756 !netdev->dcbnl_ops->setpgtccfgrx ||
757 !netdev->dcbnl_ops->setpgbwgcfgtx ||
758 !netdev->dcbnl_ops->setpgbwgcfgrx)
761 ret = nla_parse_nested(pg_tb, DCB_PG_ATTR_MAX,
762 tb[DCB_ATTR_PG_CFG], dcbnl_pg_nest);
766 for (i = DCB_PG_ATTR_TC_0; i <= DCB_PG_ATTR_TC_7; i++) {
770 ret = nla_parse_nested(param_tb, DCB_TC_ATTR_PARAM_MAX,
771 pg_tb[i], dcbnl_tc_param_nest);
775 pgid = DCB_ATTR_VALUE_UNDEFINED;
776 prio = DCB_ATTR_VALUE_UNDEFINED;
777 tc_pct = DCB_ATTR_VALUE_UNDEFINED;
778 up_map = DCB_ATTR_VALUE_UNDEFINED;
780 if (param_tb[DCB_TC_ATTR_PARAM_STRICT_PRIO])
782 nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_STRICT_PRIO]);
784 if (param_tb[DCB_TC_ATTR_PARAM_PGID])
785 pgid = nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_PGID]);
787 if (param_tb[DCB_TC_ATTR_PARAM_BW_PCT])
788 tc_pct = nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_BW_PCT]);
790 if (param_tb[DCB_TC_ATTR_PARAM_UP_MAPPING])
792 nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_UP_MAPPING]);
794 /* dir: Tx = 0, Rx = 1 */
797 netdev->dcbnl_ops->setpgtccfgrx(netdev,
798 i - DCB_PG_ATTR_TC_0,
799 prio, pgid, tc_pct, up_map);
802 netdev->dcbnl_ops->setpgtccfgtx(netdev,
803 i - DCB_PG_ATTR_TC_0,
804 prio, pgid, tc_pct, up_map);
808 for (i = DCB_PG_ATTR_BW_ID_0; i <= DCB_PG_ATTR_BW_ID_7; i++) {
812 tc_pct = nla_get_u8(pg_tb[i]);
814 /* dir: Tx = 0, Rx = 1 */
817 netdev->dcbnl_ops->setpgbwgcfgrx(netdev,
818 i - DCB_PG_ATTR_BW_ID_0, tc_pct);
821 netdev->dcbnl_ops->setpgbwgcfgtx(netdev,
822 i - DCB_PG_ATTR_BW_ID_0, tc_pct);
826 ret = dcbnl_reply(0, RTM_SETDCB,
827 (dir ? DCB_CMD_PGRX_SCFG : DCB_CMD_PGTX_SCFG),
828 DCB_ATTR_PG_CFG, pid, seq, flags);
834 static int dcbnl_pgtx_setcfg(struct net_device *netdev, struct nlattr **tb,
835 u32 pid, u32 seq, u16 flags)
837 return __dcbnl_pg_setcfg(netdev, tb, pid, seq, flags, 0);
840 static int dcbnl_pgrx_setcfg(struct net_device *netdev, struct nlattr **tb,
841 u32 pid, u32 seq, u16 flags)
843 return __dcbnl_pg_setcfg(netdev, tb, pid, seq, flags, 1);
846 static int dcb_doit(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
848 struct net *net = sock_net(skb->sk);
849 struct net_device *netdev;
850 struct dcbmsg *dcb = (struct dcbmsg *)NLMSG_DATA(nlh);
851 struct nlattr *tb[DCB_ATTR_MAX + 1];
852 u32 pid = skb ? NETLINK_CB(skb).pid : 0;
855 if (net != &init_net)
858 ret = nlmsg_parse(nlh, sizeof(*dcb), tb, DCB_ATTR_MAX,
863 if (!tb[DCB_ATTR_IFNAME])
866 netdev = dev_get_by_name(&init_net, nla_data(tb[DCB_ATTR_IFNAME]));
870 if (!netdev->dcbnl_ops)
875 ret = dcbnl_getstate(netdev, tb, pid, nlh->nlmsg_seq,
878 case DCB_CMD_PFC_GCFG:
879 ret = dcbnl_getpfccfg(netdev, tb, pid, nlh->nlmsg_seq,
882 case DCB_CMD_GPERM_HWADDR:
883 ret = dcbnl_getperm_hwaddr(netdev, tb, pid, nlh->nlmsg_seq,
886 case DCB_CMD_PGTX_GCFG:
887 ret = dcbnl_pgtx_getcfg(netdev, tb, pid, nlh->nlmsg_seq,
890 case DCB_CMD_PGRX_GCFG:
891 ret = dcbnl_pgrx_getcfg(netdev, tb, pid, nlh->nlmsg_seq,
895 ret = dcbnl_setstate(netdev, tb, pid, nlh->nlmsg_seq,
898 case DCB_CMD_PFC_SCFG:
899 ret = dcbnl_setpfccfg(netdev, tb, pid, nlh->nlmsg_seq,
903 case DCB_CMD_SET_ALL:
904 ret = dcbnl_setall(netdev, tb, pid, nlh->nlmsg_seq,
907 case DCB_CMD_PGTX_SCFG:
908 ret = dcbnl_pgtx_setcfg(netdev, tb, pid, nlh->nlmsg_seq,
911 case DCB_CMD_PGRX_SCFG:
912 ret = dcbnl_pgrx_setcfg(netdev, tb, pid, nlh->nlmsg_seq,
916 ret = dcbnl_getcap(netdev, tb, pid, nlh->nlmsg_seq,
919 case DCB_CMD_GNUMTCS:
920 ret = dcbnl_getnumtcs(netdev, tb, pid, nlh->nlmsg_seq,
923 case DCB_CMD_SNUMTCS:
924 ret = dcbnl_setnumtcs(netdev, tb, pid, nlh->nlmsg_seq,
927 case DCB_CMD_PFC_GSTATE:
928 ret = dcbnl_getpfcstate(netdev, tb, pid, nlh->nlmsg_seq,
931 case DCB_CMD_PFC_SSTATE:
932 ret = dcbnl_setpfcstate(netdev, tb, pid, nlh->nlmsg_seq,
945 static int __init dcbnl_init(void)
947 rtnl_register(PF_UNSPEC, RTM_GETDCB, dcb_doit, NULL);
948 rtnl_register(PF_UNSPEC, RTM_SETDCB, dcb_doit, NULL);
952 module_init(dcbnl_init);
954 static void __exit dcbnl_exit(void)
956 rtnl_unregister(PF_UNSPEC, RTM_GETDCB);
957 rtnl_unregister(PF_UNSPEC, RTM_SETDCB);
959 module_exit(dcbnl_exit);