Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 1 | /* |
Mark Rustad | 698e1d2 | 2011-03-14 09:01:02 +0000 | [diff] [blame] | 2 | * Copyright (c) 2008-2011, Intel Corporation. |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify it |
| 5 | * under the terms and conditions of the GNU General Public License, |
| 6 | * version 2, as published by the Free Software Foundation. |
| 7 | * |
| 8 | * This program is distributed in the hope it will be useful, but WITHOUT |
| 9 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 10 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| 11 | * more details. |
| 12 | * |
| 13 | * You should have received a copy of the GNU General Public License along with |
| 14 | * this program; if not, write to the Free Software Foundation, Inc., 59 Temple |
| 15 | * Place - Suite 330, Boston, MA 02111-1307 USA. |
| 16 | * |
| 17 | * Author: Lucy Liu <lucy.liu@intel.com> |
| 18 | */ |
| 19 | |
| 20 | #include <linux/netdevice.h> |
| 21 | #include <linux/netlink.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 22 | #include <linux/slab.h> |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 23 | #include <net/netlink.h> |
| 24 | #include <net/rtnetlink.h> |
| 25 | #include <linux/dcbnl.h> |
John Fastabend | 96b9968 | 2010-12-30 09:26:37 +0000 | [diff] [blame] | 26 | #include <net/dcbevent.h> |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 27 | #include <linux/rtnetlink.h> |
Paul Gortmaker | 3a9a231 | 2011-05-27 09:12:25 -0400 | [diff] [blame] | 28 | #include <linux/module.h> |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 29 | #include <net/sock.h> |
| 30 | |
| 31 | /** |
| 32 | * Data Center Bridging (DCB) is a collection of Ethernet enhancements |
| 33 | * intended to allow network traffic with differing requirements |
| 34 | * (highly reliable, no drops vs. best effort vs. low latency) to operate |
| 35 | * and co-exist on Ethernet. Current DCB features are: |
| 36 | * |
| 37 | * Enhanced Transmission Selection (aka Priority Grouping [PG]) - provides a |
| 38 | * framework for assigning bandwidth guarantees to traffic classes. |
| 39 | * |
| 40 | * Priority-based Flow Control (PFC) - provides a flow control mechanism which |
| 41 | * can work independently for each 802.1p priority. |
| 42 | * |
| 43 | * Congestion Notification - provides a mechanism for end-to-end congestion |
| 44 | * control for protocols which do not have built-in congestion management. |
| 45 | * |
| 46 | * More information about the emerging standards for these Ethernet features |
| 47 | * can be found at: http://www.ieee802.org/1/pages/dcbridges.html |
| 48 | * |
| 49 | * This file implements an rtnetlink interface to allow configuration of DCB |
| 50 | * features for capable devices. |
| 51 | */ |
| 52 | |
| 53 | MODULE_AUTHOR("Lucy Liu, <lucy.liu@intel.com>"); |
Jeff Kirsher | 7a6b6f5 | 2008-11-25 01:02:08 -0800 | [diff] [blame] | 54 | MODULE_DESCRIPTION("Data Center Bridging netlink interface"); |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 55 | MODULE_LICENSE("GPL"); |
| 56 | |
| 57 | /**************** DCB attribute policies *************************************/ |
| 58 | |
| 59 | /* DCB netlink attributes policy */ |
Alexey Dobriyan | b54452b | 2010-02-18 08:14:31 +0000 | [diff] [blame] | 60 | static const struct nla_policy dcbnl_rtnl_policy[DCB_ATTR_MAX + 1] = { |
Alexander Duyck | 859ee3c | 2008-11-20 21:10:23 -0800 | [diff] [blame] | 61 | [DCB_ATTR_IFNAME] = {.type = NLA_NUL_STRING, .len = IFNAMSIZ - 1}, |
| 62 | [DCB_ATTR_STATE] = {.type = NLA_U8}, |
| 63 | [DCB_ATTR_PFC_CFG] = {.type = NLA_NESTED}, |
| 64 | [DCB_ATTR_PG_CFG] = {.type = NLA_NESTED}, |
| 65 | [DCB_ATTR_SET_ALL] = {.type = NLA_U8}, |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 66 | [DCB_ATTR_PERM_HWADDR] = {.type = NLA_FLAG}, |
Alexander Duyck | 859ee3c | 2008-11-20 21:10:23 -0800 | [diff] [blame] | 67 | [DCB_ATTR_CAP] = {.type = NLA_NESTED}, |
| 68 | [DCB_ATTR_PFC_STATE] = {.type = NLA_U8}, |
| 69 | [DCB_ATTR_BCN] = {.type = NLA_NESTED}, |
Yi Zou | 6fa382a | 2009-08-31 12:33:20 +0000 | [diff] [blame] | 70 | [DCB_ATTR_APP] = {.type = NLA_NESTED}, |
John Fastabend | 3e29027 | 2010-12-30 09:25:46 +0000 | [diff] [blame] | 71 | [DCB_ATTR_IEEE] = {.type = NLA_NESTED}, |
Shmulik Ravid | 6241b62 | 2010-12-30 06:26:48 +0000 | [diff] [blame] | 72 | [DCB_ATTR_DCBX] = {.type = NLA_U8}, |
Shmulik Ravid | ea45fe4 | 2010-12-30 06:26:55 +0000 | [diff] [blame] | 73 | [DCB_ATTR_FEATCFG] = {.type = NLA_NESTED}, |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 74 | }; |
| 75 | |
| 76 | /* DCB priority flow control to User Priority nested attributes */ |
Alexey Dobriyan | b54452b | 2010-02-18 08:14:31 +0000 | [diff] [blame] | 77 | static const struct nla_policy dcbnl_pfc_up_nest[DCB_PFC_UP_ATTR_MAX + 1] = { |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 78 | [DCB_PFC_UP_ATTR_0] = {.type = NLA_U8}, |
| 79 | [DCB_PFC_UP_ATTR_1] = {.type = NLA_U8}, |
| 80 | [DCB_PFC_UP_ATTR_2] = {.type = NLA_U8}, |
| 81 | [DCB_PFC_UP_ATTR_3] = {.type = NLA_U8}, |
| 82 | [DCB_PFC_UP_ATTR_4] = {.type = NLA_U8}, |
| 83 | [DCB_PFC_UP_ATTR_5] = {.type = NLA_U8}, |
| 84 | [DCB_PFC_UP_ATTR_6] = {.type = NLA_U8}, |
| 85 | [DCB_PFC_UP_ATTR_7] = {.type = NLA_U8}, |
| 86 | [DCB_PFC_UP_ATTR_ALL] = {.type = NLA_FLAG}, |
| 87 | }; |
| 88 | |
| 89 | /* DCB priority grouping nested attributes */ |
Alexey Dobriyan | b54452b | 2010-02-18 08:14:31 +0000 | [diff] [blame] | 90 | static const struct nla_policy dcbnl_pg_nest[DCB_PG_ATTR_MAX + 1] = { |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 91 | [DCB_PG_ATTR_TC_0] = {.type = NLA_NESTED}, |
| 92 | [DCB_PG_ATTR_TC_1] = {.type = NLA_NESTED}, |
| 93 | [DCB_PG_ATTR_TC_2] = {.type = NLA_NESTED}, |
| 94 | [DCB_PG_ATTR_TC_3] = {.type = NLA_NESTED}, |
| 95 | [DCB_PG_ATTR_TC_4] = {.type = NLA_NESTED}, |
| 96 | [DCB_PG_ATTR_TC_5] = {.type = NLA_NESTED}, |
| 97 | [DCB_PG_ATTR_TC_6] = {.type = NLA_NESTED}, |
| 98 | [DCB_PG_ATTR_TC_7] = {.type = NLA_NESTED}, |
| 99 | [DCB_PG_ATTR_TC_ALL] = {.type = NLA_NESTED}, |
| 100 | [DCB_PG_ATTR_BW_ID_0] = {.type = NLA_U8}, |
| 101 | [DCB_PG_ATTR_BW_ID_1] = {.type = NLA_U8}, |
| 102 | [DCB_PG_ATTR_BW_ID_2] = {.type = NLA_U8}, |
| 103 | [DCB_PG_ATTR_BW_ID_3] = {.type = NLA_U8}, |
| 104 | [DCB_PG_ATTR_BW_ID_4] = {.type = NLA_U8}, |
| 105 | [DCB_PG_ATTR_BW_ID_5] = {.type = NLA_U8}, |
| 106 | [DCB_PG_ATTR_BW_ID_6] = {.type = NLA_U8}, |
| 107 | [DCB_PG_ATTR_BW_ID_7] = {.type = NLA_U8}, |
| 108 | [DCB_PG_ATTR_BW_ID_ALL] = {.type = NLA_FLAG}, |
| 109 | }; |
| 110 | |
| 111 | /* DCB traffic class nested attributes. */ |
Alexey Dobriyan | b54452b | 2010-02-18 08:14:31 +0000 | [diff] [blame] | 112 | static const struct nla_policy dcbnl_tc_param_nest[DCB_TC_ATTR_PARAM_MAX + 1] = { |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 113 | [DCB_TC_ATTR_PARAM_PGID] = {.type = NLA_U8}, |
| 114 | [DCB_TC_ATTR_PARAM_UP_MAPPING] = {.type = NLA_U8}, |
| 115 | [DCB_TC_ATTR_PARAM_STRICT_PRIO] = {.type = NLA_U8}, |
| 116 | [DCB_TC_ATTR_PARAM_BW_PCT] = {.type = NLA_U8}, |
| 117 | [DCB_TC_ATTR_PARAM_ALL] = {.type = NLA_FLAG}, |
| 118 | }; |
| 119 | |
Alexander Duyck | 4613218 | 2008-11-20 21:05:08 -0800 | [diff] [blame] | 120 | /* DCB capabilities nested attributes. */ |
Alexey Dobriyan | b54452b | 2010-02-18 08:14:31 +0000 | [diff] [blame] | 121 | static const struct nla_policy dcbnl_cap_nest[DCB_CAP_ATTR_MAX + 1] = { |
Alexander Duyck | 4613218 | 2008-11-20 21:05:08 -0800 | [diff] [blame] | 122 | [DCB_CAP_ATTR_ALL] = {.type = NLA_FLAG}, |
| 123 | [DCB_CAP_ATTR_PG] = {.type = NLA_U8}, |
| 124 | [DCB_CAP_ATTR_PFC] = {.type = NLA_U8}, |
| 125 | [DCB_CAP_ATTR_UP2TC] = {.type = NLA_U8}, |
| 126 | [DCB_CAP_ATTR_PG_TCS] = {.type = NLA_U8}, |
| 127 | [DCB_CAP_ATTR_PFC_TCS] = {.type = NLA_U8}, |
| 128 | [DCB_CAP_ATTR_GSP] = {.type = NLA_U8}, |
| 129 | [DCB_CAP_ATTR_BCN] = {.type = NLA_U8}, |
Shmulik Ravid | 6241b62 | 2010-12-30 06:26:48 +0000 | [diff] [blame] | 130 | [DCB_CAP_ATTR_DCBX] = {.type = NLA_U8}, |
Alexander Duyck | 4613218 | 2008-11-20 21:05:08 -0800 | [diff] [blame] | 131 | }; |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 132 | |
Alexander Duyck | 33dbabc | 2008-11-20 21:08:19 -0800 | [diff] [blame] | 133 | /* DCB capabilities nested attributes. */ |
Alexey Dobriyan | b54452b | 2010-02-18 08:14:31 +0000 | [diff] [blame] | 134 | static const struct nla_policy dcbnl_numtcs_nest[DCB_NUMTCS_ATTR_MAX + 1] = { |
Alexander Duyck | 33dbabc | 2008-11-20 21:08:19 -0800 | [diff] [blame] | 135 | [DCB_NUMTCS_ATTR_ALL] = {.type = NLA_FLAG}, |
| 136 | [DCB_NUMTCS_ATTR_PG] = {.type = NLA_U8}, |
| 137 | [DCB_NUMTCS_ATTR_PFC] = {.type = NLA_U8}, |
| 138 | }; |
| 139 | |
Alexander Duyck | 859ee3c | 2008-11-20 21:10:23 -0800 | [diff] [blame] | 140 | /* DCB BCN nested attributes. */ |
Alexey Dobriyan | b54452b | 2010-02-18 08:14:31 +0000 | [diff] [blame] | 141 | static const struct nla_policy dcbnl_bcn_nest[DCB_BCN_ATTR_MAX + 1] = { |
Alexander Duyck | 859ee3c | 2008-11-20 21:10:23 -0800 | [diff] [blame] | 142 | [DCB_BCN_ATTR_RP_0] = {.type = NLA_U8}, |
| 143 | [DCB_BCN_ATTR_RP_1] = {.type = NLA_U8}, |
| 144 | [DCB_BCN_ATTR_RP_2] = {.type = NLA_U8}, |
| 145 | [DCB_BCN_ATTR_RP_3] = {.type = NLA_U8}, |
| 146 | [DCB_BCN_ATTR_RP_4] = {.type = NLA_U8}, |
| 147 | [DCB_BCN_ATTR_RP_5] = {.type = NLA_U8}, |
| 148 | [DCB_BCN_ATTR_RP_6] = {.type = NLA_U8}, |
| 149 | [DCB_BCN_ATTR_RP_7] = {.type = NLA_U8}, |
| 150 | [DCB_BCN_ATTR_RP_ALL] = {.type = NLA_FLAG}, |
Don Skidmore | f4314e8 | 2008-12-21 20:10:29 -0800 | [diff] [blame] | 151 | [DCB_BCN_ATTR_BCNA_0] = {.type = NLA_U32}, |
| 152 | [DCB_BCN_ATTR_BCNA_1] = {.type = NLA_U32}, |
Alexander Duyck | 859ee3c | 2008-11-20 21:10:23 -0800 | [diff] [blame] | 153 | [DCB_BCN_ATTR_ALPHA] = {.type = NLA_U32}, |
| 154 | [DCB_BCN_ATTR_BETA] = {.type = NLA_U32}, |
| 155 | [DCB_BCN_ATTR_GD] = {.type = NLA_U32}, |
| 156 | [DCB_BCN_ATTR_GI] = {.type = NLA_U32}, |
| 157 | [DCB_BCN_ATTR_TMAX] = {.type = NLA_U32}, |
| 158 | [DCB_BCN_ATTR_TD] = {.type = NLA_U32}, |
| 159 | [DCB_BCN_ATTR_RMIN] = {.type = NLA_U32}, |
| 160 | [DCB_BCN_ATTR_W] = {.type = NLA_U32}, |
| 161 | [DCB_BCN_ATTR_RD] = {.type = NLA_U32}, |
| 162 | [DCB_BCN_ATTR_RU] = {.type = NLA_U32}, |
| 163 | [DCB_BCN_ATTR_WRTT] = {.type = NLA_U32}, |
| 164 | [DCB_BCN_ATTR_RI] = {.type = NLA_U32}, |
| 165 | [DCB_BCN_ATTR_C] = {.type = NLA_U32}, |
| 166 | [DCB_BCN_ATTR_ALL] = {.type = NLA_FLAG}, |
| 167 | }; |
| 168 | |
Yi Zou | 6fa382a | 2009-08-31 12:33:20 +0000 | [diff] [blame] | 169 | /* DCB APP nested attributes. */ |
Alexey Dobriyan | b54452b | 2010-02-18 08:14:31 +0000 | [diff] [blame] | 170 | static const struct nla_policy dcbnl_app_nest[DCB_APP_ATTR_MAX + 1] = { |
Yi Zou | 6fa382a | 2009-08-31 12:33:20 +0000 | [diff] [blame] | 171 | [DCB_APP_ATTR_IDTYPE] = {.type = NLA_U8}, |
| 172 | [DCB_APP_ATTR_ID] = {.type = NLA_U16}, |
| 173 | [DCB_APP_ATTR_PRIORITY] = {.type = NLA_U8}, |
| 174 | }; |
| 175 | |
John Fastabend | 3e29027 | 2010-12-30 09:25:46 +0000 | [diff] [blame] | 176 | /* IEEE 802.1Qaz nested attributes. */ |
| 177 | static const struct nla_policy dcbnl_ieee_policy[DCB_ATTR_IEEE_MAX + 1] = { |
| 178 | [DCB_ATTR_IEEE_ETS] = {.len = sizeof(struct ieee_ets)}, |
| 179 | [DCB_ATTR_IEEE_PFC] = {.len = sizeof(struct ieee_pfc)}, |
| 180 | [DCB_ATTR_IEEE_APP_TABLE] = {.type = NLA_NESTED}, |
Amir Vadai | 08f10af | 2012-04-04 21:33:30 +0000 | [diff] [blame] | 181 | [DCB_ATTR_IEEE_MAXRATE] = {.len = sizeof(struct ieee_maxrate)}, |
John Fastabend | 3e29027 | 2010-12-30 09:25:46 +0000 | [diff] [blame] | 182 | }; |
| 183 | |
| 184 | static const struct nla_policy dcbnl_ieee_app[DCB_ATTR_IEEE_APP_MAX + 1] = { |
| 185 | [DCB_ATTR_IEEE_APP] = {.len = sizeof(struct dcb_app)}, |
| 186 | }; |
| 187 | |
Shmulik Ravid | ea45fe4 | 2010-12-30 06:26:55 +0000 | [diff] [blame] | 188 | /* DCB number of traffic classes nested attributes. */ |
| 189 | static const struct nla_policy dcbnl_featcfg_nest[DCB_FEATCFG_ATTR_MAX + 1] = { |
| 190 | [DCB_FEATCFG_ATTR_ALL] = {.type = NLA_FLAG}, |
| 191 | [DCB_FEATCFG_ATTR_PG] = {.type = NLA_U8}, |
| 192 | [DCB_FEATCFG_ATTR_PFC] = {.type = NLA_U8}, |
| 193 | [DCB_FEATCFG_ATTR_APP] = {.type = NLA_U8}, |
| 194 | }; |
| 195 | |
John Fastabend | 9ab933a | 2010-12-30 09:26:31 +0000 | [diff] [blame] | 196 | static LIST_HEAD(dcb_app_list); |
| 197 | static DEFINE_SPINLOCK(dcb_lock); |
| 198 | |
Thomas Graf | 33a03aa | 2012-06-13 02:54:54 +0000 | [diff] [blame^] | 199 | static struct sk_buff *dcbnl_newmsg(int type, u8 cmd, u32 port, u32 seq, |
| 200 | u32 flags, struct nlmsghdr **nlhp) |
| 201 | { |
| 202 | struct sk_buff *skb; |
| 203 | struct dcbmsg *dcb; |
| 204 | struct nlmsghdr *nlh; |
| 205 | |
| 206 | skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
| 207 | if (!skb) |
| 208 | return NULL; |
| 209 | |
| 210 | nlh = nlmsg_put(skb, port, seq, type, sizeof(*dcb), flags); |
| 211 | if (!nlh) { |
| 212 | /* header should always fit, allocation must be buggy */ |
| 213 | BUG(); |
| 214 | } |
| 215 | |
| 216 | dcb = nlmsg_data(nlh); |
| 217 | dcb->dcb_family = AF_UNSPEC; |
| 218 | dcb->cmd = cmd; |
| 219 | dcb->dcb_pad = 0; |
| 220 | |
| 221 | if (nlhp) |
| 222 | *nlhp = nlh; |
| 223 | |
| 224 | return skb; |
| 225 | } |
| 226 | |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 227 | /* standard netlink reply call */ |
| 228 | static int dcbnl_reply(u8 value, u8 event, u8 cmd, u8 attr, u32 pid, |
| 229 | u32 seq, u16 flags) |
| 230 | { |
| 231 | struct sk_buff *dcbnl_skb; |
| 232 | struct dcbmsg *dcb; |
| 233 | struct nlmsghdr *nlh; |
| 234 | int ret = -EINVAL; |
| 235 | |
| 236 | dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
| 237 | if (!dcbnl_skb) |
| 238 | return ret; |
| 239 | |
| 240 | nlh = NLMSG_NEW(dcbnl_skb, pid, seq, event, sizeof(*dcb), flags); |
| 241 | |
| 242 | dcb = NLMSG_DATA(nlh); |
| 243 | dcb->dcb_family = AF_UNSPEC; |
| 244 | dcb->cmd = cmd; |
| 245 | dcb->dcb_pad = 0; |
| 246 | |
| 247 | ret = nla_put_u8(dcbnl_skb, attr, value); |
| 248 | if (ret) |
| 249 | goto err; |
| 250 | |
| 251 | /* end the message, assign the nlmsg_len. */ |
| 252 | nlmsg_end(dcbnl_skb, nlh); |
| 253 | ret = rtnl_unicast(dcbnl_skb, &init_net, pid); |
| 254 | if (ret) |
John Fastabend | 7eaf507 | 2009-09-25 13:12:03 +0000 | [diff] [blame] | 255 | return -EINVAL; |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 256 | |
| 257 | return 0; |
| 258 | nlmsg_failure: |
| 259 | err: |
Roel Kluin | 858eb71 | 2009-01-04 17:29:21 -0800 | [diff] [blame] | 260 | kfree_skb(dcbnl_skb); |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 261 | return ret; |
| 262 | } |
| 263 | |
| 264 | static int dcbnl_getstate(struct net_device *netdev, struct nlattr **tb, |
| 265 | u32 pid, u32 seq, u16 flags) |
| 266 | { |
| 267 | int ret = -EINVAL; |
| 268 | |
| 269 | /* if (!tb[DCB_ATTR_STATE] || !netdev->dcbnl_ops->getstate) */ |
| 270 | if (!netdev->dcbnl_ops->getstate) |
| 271 | return ret; |
| 272 | |
| 273 | ret = dcbnl_reply(netdev->dcbnl_ops->getstate(netdev), RTM_GETDCB, |
| 274 | DCB_CMD_GSTATE, DCB_ATTR_STATE, pid, seq, flags); |
| 275 | |
| 276 | return ret; |
| 277 | } |
| 278 | |
| 279 | static int dcbnl_getpfccfg(struct net_device *netdev, struct nlattr **tb, |
| 280 | u32 pid, u32 seq, u16 flags) |
| 281 | { |
| 282 | struct sk_buff *dcbnl_skb; |
| 283 | struct nlmsghdr *nlh; |
| 284 | struct dcbmsg *dcb; |
| 285 | struct nlattr *data[DCB_PFC_UP_ATTR_MAX + 1], *nest; |
| 286 | u8 value; |
| 287 | int ret = -EINVAL; |
| 288 | int i; |
| 289 | int getall = 0; |
| 290 | |
| 291 | if (!tb[DCB_ATTR_PFC_CFG] || !netdev->dcbnl_ops->getpfccfg) |
| 292 | return ret; |
| 293 | |
| 294 | ret = nla_parse_nested(data, DCB_PFC_UP_ATTR_MAX, |
| 295 | tb[DCB_ATTR_PFC_CFG], |
| 296 | dcbnl_pfc_up_nest); |
| 297 | if (ret) |
| 298 | goto err_out; |
| 299 | |
| 300 | dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
| 301 | if (!dcbnl_skb) |
| 302 | goto err_out; |
| 303 | |
| 304 | nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags); |
| 305 | |
| 306 | dcb = NLMSG_DATA(nlh); |
| 307 | dcb->dcb_family = AF_UNSPEC; |
| 308 | dcb->cmd = DCB_CMD_PFC_GCFG; |
| 309 | |
| 310 | nest = nla_nest_start(dcbnl_skb, DCB_ATTR_PFC_CFG); |
| 311 | if (!nest) |
| 312 | goto err; |
| 313 | |
| 314 | if (data[DCB_PFC_UP_ATTR_ALL]) |
| 315 | getall = 1; |
| 316 | |
| 317 | for (i = DCB_PFC_UP_ATTR_0; i <= DCB_PFC_UP_ATTR_7; i++) { |
| 318 | if (!getall && !data[i]) |
| 319 | continue; |
| 320 | |
| 321 | netdev->dcbnl_ops->getpfccfg(netdev, i - DCB_PFC_UP_ATTR_0, |
| 322 | &value); |
| 323 | ret = nla_put_u8(dcbnl_skb, i, value); |
| 324 | |
| 325 | if (ret) { |
| 326 | nla_nest_cancel(dcbnl_skb, nest); |
| 327 | goto err; |
| 328 | } |
| 329 | } |
| 330 | nla_nest_end(dcbnl_skb, nest); |
| 331 | |
| 332 | nlmsg_end(dcbnl_skb, nlh); |
| 333 | |
| 334 | ret = rtnl_unicast(dcbnl_skb, &init_net, pid); |
| 335 | if (ret) |
John Fastabend | 7eaf507 | 2009-09-25 13:12:03 +0000 | [diff] [blame] | 336 | goto err_out; |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 337 | |
| 338 | return 0; |
| 339 | nlmsg_failure: |
| 340 | err: |
Roel Kluin | 858eb71 | 2009-01-04 17:29:21 -0800 | [diff] [blame] | 341 | kfree_skb(dcbnl_skb); |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 342 | err_out: |
| 343 | return -EINVAL; |
| 344 | } |
| 345 | |
| 346 | static int dcbnl_getperm_hwaddr(struct net_device *netdev, struct nlattr **tb, |
| 347 | u32 pid, u32 seq, u16 flags) |
| 348 | { |
| 349 | struct sk_buff *dcbnl_skb; |
| 350 | struct nlmsghdr *nlh; |
| 351 | struct dcbmsg *dcb; |
| 352 | u8 perm_addr[MAX_ADDR_LEN]; |
| 353 | int ret = -EINVAL; |
| 354 | |
| 355 | if (!netdev->dcbnl_ops->getpermhwaddr) |
| 356 | return ret; |
| 357 | |
| 358 | dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
| 359 | if (!dcbnl_skb) |
| 360 | goto err_out; |
| 361 | |
| 362 | nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags); |
| 363 | |
| 364 | dcb = NLMSG_DATA(nlh); |
| 365 | dcb->dcb_family = AF_UNSPEC; |
| 366 | dcb->cmd = DCB_CMD_GPERM_HWADDR; |
| 367 | |
| 368 | netdev->dcbnl_ops->getpermhwaddr(netdev, perm_addr); |
| 369 | |
| 370 | ret = nla_put(dcbnl_skb, DCB_ATTR_PERM_HWADDR, sizeof(perm_addr), |
| 371 | perm_addr); |
| 372 | |
| 373 | nlmsg_end(dcbnl_skb, nlh); |
| 374 | |
| 375 | ret = rtnl_unicast(dcbnl_skb, &init_net, pid); |
| 376 | if (ret) |
John Fastabend | 7eaf507 | 2009-09-25 13:12:03 +0000 | [diff] [blame] | 377 | goto err_out; |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 378 | |
| 379 | return 0; |
| 380 | |
| 381 | nlmsg_failure: |
Roel Kluin | 858eb71 | 2009-01-04 17:29:21 -0800 | [diff] [blame] | 382 | kfree_skb(dcbnl_skb); |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 383 | err_out: |
| 384 | return -EINVAL; |
| 385 | } |
| 386 | |
Alexander Duyck | 4613218 | 2008-11-20 21:05:08 -0800 | [diff] [blame] | 387 | static int dcbnl_getcap(struct net_device *netdev, struct nlattr **tb, |
| 388 | u32 pid, u32 seq, u16 flags) |
| 389 | { |
| 390 | struct sk_buff *dcbnl_skb; |
| 391 | struct nlmsghdr *nlh; |
| 392 | struct dcbmsg *dcb; |
| 393 | struct nlattr *data[DCB_CAP_ATTR_MAX + 1], *nest; |
| 394 | u8 value; |
| 395 | int ret = -EINVAL; |
| 396 | int i; |
| 397 | int getall = 0; |
| 398 | |
| 399 | if (!tb[DCB_ATTR_CAP] || !netdev->dcbnl_ops->getcap) |
| 400 | return ret; |
| 401 | |
| 402 | ret = nla_parse_nested(data, DCB_CAP_ATTR_MAX, tb[DCB_ATTR_CAP], |
| 403 | dcbnl_cap_nest); |
| 404 | if (ret) |
| 405 | goto err_out; |
| 406 | |
| 407 | dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
| 408 | if (!dcbnl_skb) |
| 409 | goto err_out; |
| 410 | |
| 411 | nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags); |
| 412 | |
| 413 | dcb = NLMSG_DATA(nlh); |
| 414 | dcb->dcb_family = AF_UNSPEC; |
| 415 | dcb->cmd = DCB_CMD_GCAP; |
| 416 | |
| 417 | nest = nla_nest_start(dcbnl_skb, DCB_ATTR_CAP); |
| 418 | if (!nest) |
| 419 | goto err; |
| 420 | |
| 421 | if (data[DCB_CAP_ATTR_ALL]) |
| 422 | getall = 1; |
| 423 | |
| 424 | for (i = DCB_CAP_ATTR_ALL+1; i <= DCB_CAP_ATTR_MAX; i++) { |
| 425 | if (!getall && !data[i]) |
| 426 | continue; |
| 427 | |
| 428 | if (!netdev->dcbnl_ops->getcap(netdev, i, &value)) { |
| 429 | ret = nla_put_u8(dcbnl_skb, i, value); |
| 430 | |
| 431 | if (ret) { |
| 432 | nla_nest_cancel(dcbnl_skb, nest); |
| 433 | goto err; |
| 434 | } |
| 435 | } |
| 436 | } |
| 437 | nla_nest_end(dcbnl_skb, nest); |
| 438 | |
| 439 | nlmsg_end(dcbnl_skb, nlh); |
| 440 | |
| 441 | ret = rtnl_unicast(dcbnl_skb, &init_net, pid); |
| 442 | if (ret) |
John Fastabend | 7eaf507 | 2009-09-25 13:12:03 +0000 | [diff] [blame] | 443 | goto err_out; |
Alexander Duyck | 4613218 | 2008-11-20 21:05:08 -0800 | [diff] [blame] | 444 | |
| 445 | return 0; |
| 446 | nlmsg_failure: |
| 447 | err: |
Roel Kluin | 858eb71 | 2009-01-04 17:29:21 -0800 | [diff] [blame] | 448 | kfree_skb(dcbnl_skb); |
Alexander Duyck | 4613218 | 2008-11-20 21:05:08 -0800 | [diff] [blame] | 449 | err_out: |
| 450 | return -EINVAL; |
| 451 | } |
| 452 | |
Alexander Duyck | 33dbabc | 2008-11-20 21:08:19 -0800 | [diff] [blame] | 453 | static int dcbnl_getnumtcs(struct net_device *netdev, struct nlattr **tb, |
| 454 | u32 pid, u32 seq, u16 flags) |
| 455 | { |
| 456 | struct sk_buff *dcbnl_skb; |
| 457 | struct nlmsghdr *nlh; |
| 458 | struct dcbmsg *dcb; |
| 459 | struct nlattr *data[DCB_NUMTCS_ATTR_MAX + 1], *nest; |
| 460 | u8 value; |
| 461 | int ret = -EINVAL; |
| 462 | int i; |
| 463 | int getall = 0; |
| 464 | |
| 465 | if (!tb[DCB_ATTR_NUMTCS] || !netdev->dcbnl_ops->getnumtcs) |
| 466 | return ret; |
| 467 | |
| 468 | ret = nla_parse_nested(data, DCB_NUMTCS_ATTR_MAX, tb[DCB_ATTR_NUMTCS], |
| 469 | dcbnl_numtcs_nest); |
| 470 | if (ret) { |
| 471 | ret = -EINVAL; |
| 472 | goto err_out; |
| 473 | } |
| 474 | |
| 475 | dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
| 476 | if (!dcbnl_skb) { |
| 477 | ret = -EINVAL; |
| 478 | goto err_out; |
| 479 | } |
| 480 | |
| 481 | nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags); |
| 482 | |
| 483 | dcb = NLMSG_DATA(nlh); |
| 484 | dcb->dcb_family = AF_UNSPEC; |
| 485 | dcb->cmd = DCB_CMD_GNUMTCS; |
| 486 | |
| 487 | nest = nla_nest_start(dcbnl_skb, DCB_ATTR_NUMTCS); |
| 488 | if (!nest) { |
| 489 | ret = -EINVAL; |
| 490 | goto err; |
| 491 | } |
| 492 | |
| 493 | if (data[DCB_NUMTCS_ATTR_ALL]) |
| 494 | getall = 1; |
| 495 | |
| 496 | for (i = DCB_NUMTCS_ATTR_ALL+1; i <= DCB_NUMTCS_ATTR_MAX; i++) { |
| 497 | if (!getall && !data[i]) |
| 498 | continue; |
| 499 | |
| 500 | ret = netdev->dcbnl_ops->getnumtcs(netdev, i, &value); |
| 501 | if (!ret) { |
| 502 | ret = nla_put_u8(dcbnl_skb, i, value); |
| 503 | |
| 504 | if (ret) { |
| 505 | nla_nest_cancel(dcbnl_skb, nest); |
| 506 | ret = -EINVAL; |
| 507 | goto err; |
| 508 | } |
| 509 | } else { |
| 510 | goto err; |
| 511 | } |
| 512 | } |
| 513 | nla_nest_end(dcbnl_skb, nest); |
| 514 | |
| 515 | nlmsg_end(dcbnl_skb, nlh); |
| 516 | |
| 517 | ret = rtnl_unicast(dcbnl_skb, &init_net, pid); |
| 518 | if (ret) { |
| 519 | ret = -EINVAL; |
John Fastabend | 7eaf507 | 2009-09-25 13:12:03 +0000 | [diff] [blame] | 520 | goto err_out; |
Alexander Duyck | 33dbabc | 2008-11-20 21:08:19 -0800 | [diff] [blame] | 521 | } |
| 522 | |
| 523 | return 0; |
| 524 | nlmsg_failure: |
| 525 | err: |
Roel Kluin | 858eb71 | 2009-01-04 17:29:21 -0800 | [diff] [blame] | 526 | kfree_skb(dcbnl_skb); |
Alexander Duyck | 33dbabc | 2008-11-20 21:08:19 -0800 | [diff] [blame] | 527 | err_out: |
| 528 | return ret; |
| 529 | } |
| 530 | |
| 531 | static int dcbnl_setnumtcs(struct net_device *netdev, struct nlattr **tb, |
| 532 | u32 pid, u32 seq, u16 flags) |
| 533 | { |
| 534 | struct nlattr *data[DCB_NUMTCS_ATTR_MAX + 1]; |
| 535 | int ret = -EINVAL; |
| 536 | u8 value; |
| 537 | int i; |
| 538 | |
Don Skidmore | 8b124a8 | 2008-12-15 01:06:23 -0800 | [diff] [blame] | 539 | if (!tb[DCB_ATTR_NUMTCS] || !netdev->dcbnl_ops->setnumtcs) |
Alexander Duyck | 33dbabc | 2008-11-20 21:08:19 -0800 | [diff] [blame] | 540 | return ret; |
| 541 | |
| 542 | ret = nla_parse_nested(data, DCB_NUMTCS_ATTR_MAX, tb[DCB_ATTR_NUMTCS], |
| 543 | dcbnl_numtcs_nest); |
| 544 | |
| 545 | if (ret) { |
| 546 | ret = -EINVAL; |
| 547 | goto err; |
| 548 | } |
| 549 | |
| 550 | for (i = DCB_NUMTCS_ATTR_ALL+1; i <= DCB_NUMTCS_ATTR_MAX; i++) { |
| 551 | if (data[i] == NULL) |
| 552 | continue; |
| 553 | |
| 554 | value = nla_get_u8(data[i]); |
| 555 | |
| 556 | ret = netdev->dcbnl_ops->setnumtcs(netdev, i, value); |
| 557 | |
| 558 | if (ret) |
| 559 | goto operr; |
| 560 | } |
| 561 | |
| 562 | operr: |
| 563 | ret = dcbnl_reply(!!ret, RTM_SETDCB, DCB_CMD_SNUMTCS, |
| 564 | DCB_ATTR_NUMTCS, pid, seq, flags); |
| 565 | |
| 566 | err: |
| 567 | return ret; |
| 568 | } |
| 569 | |
Alexander Duyck | 0eb3aa9 | 2008-11-20 21:09:23 -0800 | [diff] [blame] | 570 | static int dcbnl_getpfcstate(struct net_device *netdev, struct nlattr **tb, |
| 571 | u32 pid, u32 seq, u16 flags) |
| 572 | { |
| 573 | int ret = -EINVAL; |
| 574 | |
| 575 | if (!netdev->dcbnl_ops->getpfcstate) |
| 576 | return ret; |
| 577 | |
| 578 | ret = dcbnl_reply(netdev->dcbnl_ops->getpfcstate(netdev), RTM_GETDCB, |
| 579 | DCB_CMD_PFC_GSTATE, DCB_ATTR_PFC_STATE, |
| 580 | pid, seq, flags); |
| 581 | |
| 582 | return ret; |
| 583 | } |
| 584 | |
| 585 | static int dcbnl_setpfcstate(struct net_device *netdev, struct nlattr **tb, |
| 586 | u32 pid, u32 seq, u16 flags) |
| 587 | { |
| 588 | int ret = -EINVAL; |
| 589 | u8 value; |
| 590 | |
| 591 | if (!tb[DCB_ATTR_PFC_STATE] || !netdev->dcbnl_ops->setpfcstate) |
| 592 | return ret; |
| 593 | |
| 594 | value = nla_get_u8(tb[DCB_ATTR_PFC_STATE]); |
| 595 | |
| 596 | netdev->dcbnl_ops->setpfcstate(netdev, value); |
| 597 | |
| 598 | ret = dcbnl_reply(0, RTM_SETDCB, DCB_CMD_PFC_SSTATE, DCB_ATTR_PFC_STATE, |
| 599 | pid, seq, flags); |
| 600 | |
| 601 | return ret; |
| 602 | } |
| 603 | |
Yi Zou | 5794968 | 2009-08-31 12:33:40 +0000 | [diff] [blame] | 604 | static int dcbnl_getapp(struct net_device *netdev, struct nlattr **tb, |
| 605 | u32 pid, u32 seq, u16 flags) |
| 606 | { |
| 607 | struct sk_buff *dcbnl_skb; |
| 608 | struct nlmsghdr *nlh; |
| 609 | struct dcbmsg *dcb; |
| 610 | struct nlattr *app_nest; |
| 611 | struct nlattr *app_tb[DCB_APP_ATTR_MAX + 1]; |
| 612 | u16 id; |
| 613 | u8 up, idtype; |
| 614 | int ret = -EINVAL; |
| 615 | |
John Fastabend | 3dce38a | 2011-01-21 16:35:18 +0000 | [diff] [blame] | 616 | if (!tb[DCB_ATTR_APP]) |
Yi Zou | 5794968 | 2009-08-31 12:33:40 +0000 | [diff] [blame] | 617 | goto out; |
| 618 | |
| 619 | ret = nla_parse_nested(app_tb, DCB_APP_ATTR_MAX, tb[DCB_ATTR_APP], |
| 620 | dcbnl_app_nest); |
| 621 | if (ret) |
| 622 | goto out; |
| 623 | |
| 624 | ret = -EINVAL; |
| 625 | /* all must be non-null */ |
| 626 | if ((!app_tb[DCB_APP_ATTR_IDTYPE]) || |
| 627 | (!app_tb[DCB_APP_ATTR_ID])) |
| 628 | goto out; |
| 629 | |
| 630 | /* either by eth type or by socket number */ |
| 631 | idtype = nla_get_u8(app_tb[DCB_APP_ATTR_IDTYPE]); |
| 632 | if ((idtype != DCB_APP_IDTYPE_ETHTYPE) && |
| 633 | (idtype != DCB_APP_IDTYPE_PORTNUM)) |
| 634 | goto out; |
| 635 | |
| 636 | id = nla_get_u16(app_tb[DCB_APP_ATTR_ID]); |
John Fastabend | 3dce38a | 2011-01-21 16:35:18 +0000 | [diff] [blame] | 637 | |
| 638 | if (netdev->dcbnl_ops->getapp) { |
| 639 | up = netdev->dcbnl_ops->getapp(netdev, idtype, id); |
| 640 | } else { |
| 641 | struct dcb_app app = { |
| 642 | .selector = idtype, |
| 643 | .protocol = id, |
| 644 | }; |
| 645 | up = dcb_getapp(netdev, &app); |
| 646 | } |
Yi Zou | 5794968 | 2009-08-31 12:33:40 +0000 | [diff] [blame] | 647 | |
| 648 | /* send this back */ |
| 649 | dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
| 650 | if (!dcbnl_skb) |
| 651 | goto out; |
| 652 | |
| 653 | nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags); |
| 654 | dcb = NLMSG_DATA(nlh); |
| 655 | dcb->dcb_family = AF_UNSPEC; |
| 656 | dcb->cmd = DCB_CMD_GAPP; |
| 657 | |
| 658 | app_nest = nla_nest_start(dcbnl_skb, DCB_ATTR_APP); |
Jesper Juhl | d3337de | 2011-02-10 11:57:16 +0000 | [diff] [blame] | 659 | if (!app_nest) |
| 660 | goto out_cancel; |
| 661 | |
Yi Zou | 5794968 | 2009-08-31 12:33:40 +0000 | [diff] [blame] | 662 | ret = nla_put_u8(dcbnl_skb, DCB_APP_ATTR_IDTYPE, idtype); |
| 663 | if (ret) |
| 664 | goto out_cancel; |
| 665 | |
| 666 | ret = nla_put_u16(dcbnl_skb, DCB_APP_ATTR_ID, id); |
| 667 | if (ret) |
| 668 | goto out_cancel; |
| 669 | |
| 670 | ret = nla_put_u8(dcbnl_skb, DCB_APP_ATTR_PRIORITY, up); |
| 671 | if (ret) |
| 672 | goto out_cancel; |
| 673 | |
| 674 | nla_nest_end(dcbnl_skb, app_nest); |
| 675 | nlmsg_end(dcbnl_skb, nlh); |
| 676 | |
| 677 | ret = rtnl_unicast(dcbnl_skb, &init_net, pid); |
| 678 | if (ret) |
| 679 | goto nlmsg_failure; |
| 680 | |
| 681 | goto out; |
| 682 | |
| 683 | out_cancel: |
| 684 | nla_nest_cancel(dcbnl_skb, app_nest); |
| 685 | nlmsg_failure: |
| 686 | kfree_skb(dcbnl_skb); |
| 687 | out: |
| 688 | return ret; |
| 689 | } |
| 690 | |
| 691 | static int dcbnl_setapp(struct net_device *netdev, struct nlattr **tb, |
| 692 | u32 pid, u32 seq, u16 flags) |
| 693 | { |
John Fastabend | 9ab933a | 2010-12-30 09:26:31 +0000 | [diff] [blame] | 694 | int err, ret = -EINVAL; |
Yi Zou | 5794968 | 2009-08-31 12:33:40 +0000 | [diff] [blame] | 695 | u16 id; |
| 696 | u8 up, idtype; |
| 697 | struct nlattr *app_tb[DCB_APP_ATTR_MAX + 1]; |
| 698 | |
John Fastabend | 9ab933a | 2010-12-30 09:26:31 +0000 | [diff] [blame] | 699 | if (!tb[DCB_ATTR_APP]) |
Yi Zou | 5794968 | 2009-08-31 12:33:40 +0000 | [diff] [blame] | 700 | goto out; |
| 701 | |
| 702 | ret = nla_parse_nested(app_tb, DCB_APP_ATTR_MAX, tb[DCB_ATTR_APP], |
| 703 | dcbnl_app_nest); |
| 704 | if (ret) |
| 705 | goto out; |
| 706 | |
| 707 | ret = -EINVAL; |
| 708 | /* all must be non-null */ |
| 709 | if ((!app_tb[DCB_APP_ATTR_IDTYPE]) || |
| 710 | (!app_tb[DCB_APP_ATTR_ID]) || |
| 711 | (!app_tb[DCB_APP_ATTR_PRIORITY])) |
| 712 | goto out; |
| 713 | |
| 714 | /* either by eth type or by socket number */ |
| 715 | idtype = nla_get_u8(app_tb[DCB_APP_ATTR_IDTYPE]); |
| 716 | if ((idtype != DCB_APP_IDTYPE_ETHTYPE) && |
| 717 | (idtype != DCB_APP_IDTYPE_PORTNUM)) |
| 718 | goto out; |
| 719 | |
| 720 | id = nla_get_u16(app_tb[DCB_APP_ATTR_ID]); |
| 721 | up = nla_get_u8(app_tb[DCB_APP_ATTR_PRIORITY]); |
| 722 | |
John Fastabend | 9ab933a | 2010-12-30 09:26:31 +0000 | [diff] [blame] | 723 | if (netdev->dcbnl_ops->setapp) { |
| 724 | err = netdev->dcbnl_ops->setapp(netdev, idtype, id, up); |
| 725 | } else { |
| 726 | struct dcb_app app; |
| 727 | app.selector = idtype; |
| 728 | app.protocol = id; |
| 729 | app.priority = up; |
| 730 | err = dcb_setapp(netdev, &app); |
| 731 | } |
| 732 | |
| 733 | ret = dcbnl_reply(err, RTM_SETDCB, DCB_CMD_SAPP, DCB_ATTR_APP, |
| 734 | pid, seq, flags); |
John Fastabend | 0815798 | 2012-04-20 09:49:23 +0000 | [diff] [blame] | 735 | dcbnl_cee_notify(netdev, RTM_SETDCB, DCB_CMD_SAPP, seq, 0); |
Yi Zou | 5794968 | 2009-08-31 12:33:40 +0000 | [diff] [blame] | 736 | out: |
| 737 | return ret; |
| 738 | } |
| 739 | |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 740 | static int __dcbnl_pg_getcfg(struct net_device *netdev, struct nlattr **tb, |
| 741 | u32 pid, u32 seq, u16 flags, int dir) |
| 742 | { |
| 743 | struct sk_buff *dcbnl_skb; |
| 744 | struct nlmsghdr *nlh; |
| 745 | struct dcbmsg *dcb; |
| 746 | struct nlattr *pg_nest, *param_nest, *data; |
| 747 | struct nlattr *pg_tb[DCB_PG_ATTR_MAX + 1]; |
| 748 | struct nlattr *param_tb[DCB_TC_ATTR_PARAM_MAX + 1]; |
| 749 | u8 prio, pgid, tc_pct, up_map; |
| 750 | int ret = -EINVAL; |
| 751 | int getall = 0; |
| 752 | int i; |
| 753 | |
| 754 | if (!tb[DCB_ATTR_PG_CFG] || |
| 755 | !netdev->dcbnl_ops->getpgtccfgtx || |
| 756 | !netdev->dcbnl_ops->getpgtccfgrx || |
| 757 | !netdev->dcbnl_ops->getpgbwgcfgtx || |
| 758 | !netdev->dcbnl_ops->getpgbwgcfgrx) |
| 759 | return ret; |
| 760 | |
| 761 | ret = nla_parse_nested(pg_tb, DCB_PG_ATTR_MAX, |
| 762 | tb[DCB_ATTR_PG_CFG], dcbnl_pg_nest); |
| 763 | |
| 764 | if (ret) |
| 765 | goto err_out; |
| 766 | |
| 767 | dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
| 768 | if (!dcbnl_skb) |
| 769 | goto err_out; |
| 770 | |
| 771 | nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags); |
| 772 | |
| 773 | dcb = NLMSG_DATA(nlh); |
| 774 | dcb->dcb_family = AF_UNSPEC; |
| 775 | dcb->cmd = (dir) ? DCB_CMD_PGRX_GCFG : DCB_CMD_PGTX_GCFG; |
| 776 | |
| 777 | pg_nest = nla_nest_start(dcbnl_skb, DCB_ATTR_PG_CFG); |
| 778 | if (!pg_nest) |
| 779 | goto err; |
| 780 | |
| 781 | if (pg_tb[DCB_PG_ATTR_TC_ALL]) |
| 782 | getall = 1; |
| 783 | |
| 784 | for (i = DCB_PG_ATTR_TC_0; i <= DCB_PG_ATTR_TC_7; i++) { |
| 785 | if (!getall && !pg_tb[i]) |
| 786 | continue; |
| 787 | |
| 788 | if (pg_tb[DCB_PG_ATTR_TC_ALL]) |
| 789 | data = pg_tb[DCB_PG_ATTR_TC_ALL]; |
| 790 | else |
| 791 | data = pg_tb[i]; |
| 792 | ret = nla_parse_nested(param_tb, DCB_TC_ATTR_PARAM_MAX, |
| 793 | data, dcbnl_tc_param_nest); |
| 794 | if (ret) |
| 795 | goto err_pg; |
| 796 | |
| 797 | param_nest = nla_nest_start(dcbnl_skb, i); |
| 798 | if (!param_nest) |
| 799 | goto err_pg; |
| 800 | |
| 801 | pgid = DCB_ATTR_VALUE_UNDEFINED; |
| 802 | prio = DCB_ATTR_VALUE_UNDEFINED; |
| 803 | tc_pct = DCB_ATTR_VALUE_UNDEFINED; |
| 804 | up_map = DCB_ATTR_VALUE_UNDEFINED; |
| 805 | |
| 806 | if (dir) { |
| 807 | /* Rx */ |
| 808 | netdev->dcbnl_ops->getpgtccfgrx(netdev, |
| 809 | i - DCB_PG_ATTR_TC_0, &prio, |
| 810 | &pgid, &tc_pct, &up_map); |
| 811 | } else { |
| 812 | /* Tx */ |
| 813 | netdev->dcbnl_ops->getpgtccfgtx(netdev, |
| 814 | i - DCB_PG_ATTR_TC_0, &prio, |
| 815 | &pgid, &tc_pct, &up_map); |
| 816 | } |
| 817 | |
| 818 | if (param_tb[DCB_TC_ATTR_PARAM_PGID] || |
| 819 | param_tb[DCB_TC_ATTR_PARAM_ALL]) { |
| 820 | ret = nla_put_u8(dcbnl_skb, |
| 821 | DCB_TC_ATTR_PARAM_PGID, pgid); |
| 822 | if (ret) |
| 823 | goto err_param; |
| 824 | } |
| 825 | if (param_tb[DCB_TC_ATTR_PARAM_UP_MAPPING] || |
| 826 | param_tb[DCB_TC_ATTR_PARAM_ALL]) { |
| 827 | ret = nla_put_u8(dcbnl_skb, |
| 828 | DCB_TC_ATTR_PARAM_UP_MAPPING, up_map); |
| 829 | if (ret) |
| 830 | goto err_param; |
| 831 | } |
| 832 | if (param_tb[DCB_TC_ATTR_PARAM_STRICT_PRIO] || |
| 833 | param_tb[DCB_TC_ATTR_PARAM_ALL]) { |
| 834 | ret = nla_put_u8(dcbnl_skb, |
| 835 | DCB_TC_ATTR_PARAM_STRICT_PRIO, prio); |
| 836 | if (ret) |
| 837 | goto err_param; |
| 838 | } |
| 839 | if (param_tb[DCB_TC_ATTR_PARAM_BW_PCT] || |
| 840 | param_tb[DCB_TC_ATTR_PARAM_ALL]) { |
| 841 | ret = nla_put_u8(dcbnl_skb, DCB_TC_ATTR_PARAM_BW_PCT, |
| 842 | tc_pct); |
| 843 | if (ret) |
| 844 | goto err_param; |
| 845 | } |
| 846 | nla_nest_end(dcbnl_skb, param_nest); |
| 847 | } |
| 848 | |
| 849 | if (pg_tb[DCB_PG_ATTR_BW_ID_ALL]) |
| 850 | getall = 1; |
| 851 | else |
| 852 | getall = 0; |
| 853 | |
| 854 | for (i = DCB_PG_ATTR_BW_ID_0; i <= DCB_PG_ATTR_BW_ID_7; i++) { |
| 855 | if (!getall && !pg_tb[i]) |
| 856 | continue; |
| 857 | |
| 858 | tc_pct = DCB_ATTR_VALUE_UNDEFINED; |
| 859 | |
| 860 | if (dir) { |
| 861 | /* Rx */ |
| 862 | netdev->dcbnl_ops->getpgbwgcfgrx(netdev, |
| 863 | i - DCB_PG_ATTR_BW_ID_0, &tc_pct); |
| 864 | } else { |
| 865 | /* Tx */ |
| 866 | netdev->dcbnl_ops->getpgbwgcfgtx(netdev, |
| 867 | i - DCB_PG_ATTR_BW_ID_0, &tc_pct); |
| 868 | } |
| 869 | ret = nla_put_u8(dcbnl_skb, i, tc_pct); |
| 870 | |
| 871 | if (ret) |
| 872 | goto err_pg; |
| 873 | } |
| 874 | |
| 875 | nla_nest_end(dcbnl_skb, pg_nest); |
| 876 | |
| 877 | nlmsg_end(dcbnl_skb, nlh); |
| 878 | |
| 879 | ret = rtnl_unicast(dcbnl_skb, &init_net, pid); |
| 880 | if (ret) |
John Fastabend | 7eaf507 | 2009-09-25 13:12:03 +0000 | [diff] [blame] | 881 | goto err_out; |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 882 | |
| 883 | return 0; |
| 884 | |
| 885 | err_param: |
| 886 | nla_nest_cancel(dcbnl_skb, param_nest); |
| 887 | err_pg: |
| 888 | nla_nest_cancel(dcbnl_skb, pg_nest); |
| 889 | nlmsg_failure: |
| 890 | err: |
Roel Kluin | 858eb71 | 2009-01-04 17:29:21 -0800 | [diff] [blame] | 891 | kfree_skb(dcbnl_skb); |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 892 | err_out: |
| 893 | ret = -EINVAL; |
| 894 | return ret; |
| 895 | } |
| 896 | |
| 897 | static int dcbnl_pgtx_getcfg(struct net_device *netdev, struct nlattr **tb, |
| 898 | u32 pid, u32 seq, u16 flags) |
| 899 | { |
| 900 | return __dcbnl_pg_getcfg(netdev, tb, pid, seq, flags, 0); |
| 901 | } |
| 902 | |
| 903 | static int dcbnl_pgrx_getcfg(struct net_device *netdev, struct nlattr **tb, |
| 904 | u32 pid, u32 seq, u16 flags) |
| 905 | { |
| 906 | return __dcbnl_pg_getcfg(netdev, tb, pid, seq, flags, 1); |
| 907 | } |
| 908 | |
| 909 | static int dcbnl_setstate(struct net_device *netdev, struct nlattr **tb, |
| 910 | u32 pid, u32 seq, u16 flags) |
| 911 | { |
| 912 | int ret = -EINVAL; |
| 913 | u8 value; |
| 914 | |
| 915 | if (!tb[DCB_ATTR_STATE] || !netdev->dcbnl_ops->setstate) |
| 916 | return ret; |
| 917 | |
| 918 | value = nla_get_u8(tb[DCB_ATTR_STATE]); |
| 919 | |
Don Skidmore | 1486a61 | 2008-12-21 20:09:50 -0800 | [diff] [blame] | 920 | ret = dcbnl_reply(netdev->dcbnl_ops->setstate(netdev, value), |
| 921 | RTM_SETDCB, DCB_CMD_SSTATE, DCB_ATTR_STATE, |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 922 | pid, seq, flags); |
| 923 | |
| 924 | return ret; |
| 925 | } |
| 926 | |
| 927 | static int dcbnl_setpfccfg(struct net_device *netdev, struct nlattr **tb, |
| 928 | u32 pid, u32 seq, u16 flags) |
| 929 | { |
| 930 | struct nlattr *data[DCB_PFC_UP_ATTR_MAX + 1]; |
| 931 | int i; |
| 932 | int ret = -EINVAL; |
| 933 | u8 value; |
| 934 | |
| 935 | if (!tb[DCB_ATTR_PFC_CFG] || !netdev->dcbnl_ops->setpfccfg) |
| 936 | return ret; |
| 937 | |
| 938 | ret = nla_parse_nested(data, DCB_PFC_UP_ATTR_MAX, |
| 939 | tb[DCB_ATTR_PFC_CFG], |
| 940 | dcbnl_pfc_up_nest); |
| 941 | if (ret) |
| 942 | goto err; |
| 943 | |
| 944 | for (i = DCB_PFC_UP_ATTR_0; i <= DCB_PFC_UP_ATTR_7; i++) { |
| 945 | if (data[i] == NULL) |
| 946 | continue; |
| 947 | value = nla_get_u8(data[i]); |
| 948 | netdev->dcbnl_ops->setpfccfg(netdev, |
| 949 | data[i]->nla_type - DCB_PFC_UP_ATTR_0, value); |
| 950 | } |
| 951 | |
| 952 | ret = dcbnl_reply(0, RTM_SETDCB, DCB_CMD_PFC_SCFG, DCB_ATTR_PFC_CFG, |
| 953 | pid, seq, flags); |
| 954 | err: |
| 955 | return ret; |
| 956 | } |
| 957 | |
| 958 | static int dcbnl_setall(struct net_device *netdev, struct nlattr **tb, |
| 959 | u32 pid, u32 seq, u16 flags) |
| 960 | { |
| 961 | int ret = -EINVAL; |
| 962 | |
| 963 | if (!tb[DCB_ATTR_SET_ALL] || !netdev->dcbnl_ops->setall) |
| 964 | return ret; |
| 965 | |
| 966 | ret = dcbnl_reply(netdev->dcbnl_ops->setall(netdev), RTM_SETDCB, |
| 967 | DCB_CMD_SET_ALL, DCB_ATTR_SET_ALL, pid, seq, flags); |
John Fastabend | 0815798 | 2012-04-20 09:49:23 +0000 | [diff] [blame] | 968 | dcbnl_cee_notify(netdev, RTM_SETDCB, DCB_CMD_SET_ALL, seq, 0); |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 969 | |
| 970 | return ret; |
| 971 | } |
| 972 | |
| 973 | static int __dcbnl_pg_setcfg(struct net_device *netdev, struct nlattr **tb, |
| 974 | u32 pid, u32 seq, u16 flags, int dir) |
| 975 | { |
| 976 | struct nlattr *pg_tb[DCB_PG_ATTR_MAX + 1]; |
| 977 | struct nlattr *param_tb[DCB_TC_ATTR_PARAM_MAX + 1]; |
| 978 | int ret = -EINVAL; |
| 979 | int i; |
| 980 | u8 pgid; |
| 981 | u8 up_map; |
| 982 | u8 prio; |
| 983 | u8 tc_pct; |
| 984 | |
| 985 | if (!tb[DCB_ATTR_PG_CFG] || |
| 986 | !netdev->dcbnl_ops->setpgtccfgtx || |
| 987 | !netdev->dcbnl_ops->setpgtccfgrx || |
| 988 | !netdev->dcbnl_ops->setpgbwgcfgtx || |
| 989 | !netdev->dcbnl_ops->setpgbwgcfgrx) |
| 990 | return ret; |
| 991 | |
| 992 | ret = nla_parse_nested(pg_tb, DCB_PG_ATTR_MAX, |
| 993 | tb[DCB_ATTR_PG_CFG], dcbnl_pg_nest); |
| 994 | if (ret) |
| 995 | goto err; |
| 996 | |
| 997 | for (i = DCB_PG_ATTR_TC_0; i <= DCB_PG_ATTR_TC_7; i++) { |
| 998 | if (!pg_tb[i]) |
| 999 | continue; |
| 1000 | |
| 1001 | ret = nla_parse_nested(param_tb, DCB_TC_ATTR_PARAM_MAX, |
| 1002 | pg_tb[i], dcbnl_tc_param_nest); |
| 1003 | if (ret) |
| 1004 | goto err; |
| 1005 | |
| 1006 | pgid = DCB_ATTR_VALUE_UNDEFINED; |
| 1007 | prio = DCB_ATTR_VALUE_UNDEFINED; |
| 1008 | tc_pct = DCB_ATTR_VALUE_UNDEFINED; |
| 1009 | up_map = DCB_ATTR_VALUE_UNDEFINED; |
| 1010 | |
| 1011 | if (param_tb[DCB_TC_ATTR_PARAM_STRICT_PRIO]) |
| 1012 | prio = |
| 1013 | nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_STRICT_PRIO]); |
| 1014 | |
| 1015 | if (param_tb[DCB_TC_ATTR_PARAM_PGID]) |
| 1016 | pgid = nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_PGID]); |
| 1017 | |
| 1018 | if (param_tb[DCB_TC_ATTR_PARAM_BW_PCT]) |
| 1019 | tc_pct = nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_BW_PCT]); |
| 1020 | |
| 1021 | if (param_tb[DCB_TC_ATTR_PARAM_UP_MAPPING]) |
| 1022 | up_map = |
| 1023 | nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_UP_MAPPING]); |
| 1024 | |
| 1025 | /* dir: Tx = 0, Rx = 1 */ |
| 1026 | if (dir) { |
| 1027 | /* Rx */ |
| 1028 | netdev->dcbnl_ops->setpgtccfgrx(netdev, |
| 1029 | i - DCB_PG_ATTR_TC_0, |
| 1030 | prio, pgid, tc_pct, up_map); |
| 1031 | } else { |
| 1032 | /* Tx */ |
| 1033 | netdev->dcbnl_ops->setpgtccfgtx(netdev, |
| 1034 | i - DCB_PG_ATTR_TC_0, |
| 1035 | prio, pgid, tc_pct, up_map); |
| 1036 | } |
| 1037 | } |
| 1038 | |
| 1039 | for (i = DCB_PG_ATTR_BW_ID_0; i <= DCB_PG_ATTR_BW_ID_7; i++) { |
| 1040 | if (!pg_tb[i]) |
| 1041 | continue; |
| 1042 | |
| 1043 | tc_pct = nla_get_u8(pg_tb[i]); |
| 1044 | |
| 1045 | /* dir: Tx = 0, Rx = 1 */ |
| 1046 | if (dir) { |
| 1047 | /* Rx */ |
| 1048 | netdev->dcbnl_ops->setpgbwgcfgrx(netdev, |
| 1049 | i - DCB_PG_ATTR_BW_ID_0, tc_pct); |
| 1050 | } else { |
| 1051 | /* Tx */ |
| 1052 | netdev->dcbnl_ops->setpgbwgcfgtx(netdev, |
| 1053 | i - DCB_PG_ATTR_BW_ID_0, tc_pct); |
| 1054 | } |
| 1055 | } |
| 1056 | |
| 1057 | ret = dcbnl_reply(0, RTM_SETDCB, |
| 1058 | (dir ? DCB_CMD_PGRX_SCFG : DCB_CMD_PGTX_SCFG), |
| 1059 | DCB_ATTR_PG_CFG, pid, seq, flags); |
| 1060 | |
| 1061 | err: |
| 1062 | return ret; |
| 1063 | } |
| 1064 | |
| 1065 | static int dcbnl_pgtx_setcfg(struct net_device *netdev, struct nlattr **tb, |
| 1066 | u32 pid, u32 seq, u16 flags) |
| 1067 | { |
| 1068 | return __dcbnl_pg_setcfg(netdev, tb, pid, seq, flags, 0); |
| 1069 | } |
| 1070 | |
| 1071 | static int dcbnl_pgrx_setcfg(struct net_device *netdev, struct nlattr **tb, |
| 1072 | u32 pid, u32 seq, u16 flags) |
| 1073 | { |
| 1074 | return __dcbnl_pg_setcfg(netdev, tb, pid, seq, flags, 1); |
| 1075 | } |
| 1076 | |
Alexander Duyck | 859ee3c | 2008-11-20 21:10:23 -0800 | [diff] [blame] | 1077 | static int dcbnl_bcn_getcfg(struct net_device *netdev, struct nlattr **tb, |
| 1078 | u32 pid, u32 seq, u16 flags) |
| 1079 | { |
| 1080 | struct sk_buff *dcbnl_skb; |
| 1081 | struct nlmsghdr *nlh; |
| 1082 | struct dcbmsg *dcb; |
| 1083 | struct nlattr *bcn_nest; |
| 1084 | struct nlattr *bcn_tb[DCB_BCN_ATTR_MAX + 1]; |
| 1085 | u8 value_byte; |
| 1086 | u32 value_integer; |
| 1087 | int ret = -EINVAL; |
| 1088 | bool getall = false; |
| 1089 | int i; |
| 1090 | |
| 1091 | if (!tb[DCB_ATTR_BCN] || !netdev->dcbnl_ops->getbcnrp || |
| 1092 | !netdev->dcbnl_ops->getbcncfg) |
| 1093 | return ret; |
| 1094 | |
| 1095 | ret = nla_parse_nested(bcn_tb, DCB_BCN_ATTR_MAX, |
| 1096 | tb[DCB_ATTR_BCN], dcbnl_bcn_nest); |
| 1097 | |
| 1098 | if (ret) |
| 1099 | goto err_out; |
| 1100 | |
| 1101 | dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
| 1102 | if (!dcbnl_skb) |
| 1103 | goto err_out; |
| 1104 | |
| 1105 | nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags); |
| 1106 | |
| 1107 | dcb = NLMSG_DATA(nlh); |
| 1108 | dcb->dcb_family = AF_UNSPEC; |
| 1109 | dcb->cmd = DCB_CMD_BCN_GCFG; |
| 1110 | |
| 1111 | bcn_nest = nla_nest_start(dcbnl_skb, DCB_ATTR_BCN); |
| 1112 | if (!bcn_nest) |
| 1113 | goto err; |
| 1114 | |
| 1115 | if (bcn_tb[DCB_BCN_ATTR_ALL]) |
| 1116 | getall = true; |
| 1117 | |
| 1118 | for (i = DCB_BCN_ATTR_RP_0; i <= DCB_BCN_ATTR_RP_7; i++) { |
| 1119 | if (!getall && !bcn_tb[i]) |
| 1120 | continue; |
| 1121 | |
| 1122 | netdev->dcbnl_ops->getbcnrp(netdev, i - DCB_BCN_ATTR_RP_0, |
| 1123 | &value_byte); |
| 1124 | ret = nla_put_u8(dcbnl_skb, i, value_byte); |
| 1125 | if (ret) |
| 1126 | goto err_bcn; |
| 1127 | } |
| 1128 | |
Don Skidmore | f4314e8 | 2008-12-21 20:10:29 -0800 | [diff] [blame] | 1129 | for (i = DCB_BCN_ATTR_BCNA_0; i <= DCB_BCN_ATTR_RI; i++) { |
Alexander Duyck | 859ee3c | 2008-11-20 21:10:23 -0800 | [diff] [blame] | 1130 | if (!getall && !bcn_tb[i]) |
| 1131 | continue; |
| 1132 | |
| 1133 | netdev->dcbnl_ops->getbcncfg(netdev, i, |
| 1134 | &value_integer); |
| 1135 | ret = nla_put_u32(dcbnl_skb, i, value_integer); |
| 1136 | if (ret) |
| 1137 | goto err_bcn; |
| 1138 | } |
| 1139 | |
| 1140 | nla_nest_end(dcbnl_skb, bcn_nest); |
| 1141 | |
| 1142 | nlmsg_end(dcbnl_skb, nlh); |
| 1143 | |
| 1144 | ret = rtnl_unicast(dcbnl_skb, &init_net, pid); |
| 1145 | if (ret) |
John Fastabend | 7eaf507 | 2009-09-25 13:12:03 +0000 | [diff] [blame] | 1146 | goto err_out; |
Alexander Duyck | 859ee3c | 2008-11-20 21:10:23 -0800 | [diff] [blame] | 1147 | |
| 1148 | return 0; |
| 1149 | |
| 1150 | err_bcn: |
| 1151 | nla_nest_cancel(dcbnl_skb, bcn_nest); |
| 1152 | nlmsg_failure: |
| 1153 | err: |
Roel Kluin | 858eb71 | 2009-01-04 17:29:21 -0800 | [diff] [blame] | 1154 | kfree_skb(dcbnl_skb); |
Alexander Duyck | 859ee3c | 2008-11-20 21:10:23 -0800 | [diff] [blame] | 1155 | err_out: |
| 1156 | ret = -EINVAL; |
| 1157 | return ret; |
| 1158 | } |
| 1159 | |
| 1160 | static int dcbnl_bcn_setcfg(struct net_device *netdev, struct nlattr **tb, |
| 1161 | u32 pid, u32 seq, u16 flags) |
| 1162 | { |
| 1163 | struct nlattr *data[DCB_BCN_ATTR_MAX + 1]; |
| 1164 | int i; |
| 1165 | int ret = -EINVAL; |
| 1166 | u8 value_byte; |
| 1167 | u32 value_int; |
| 1168 | |
Joe Perches | f64f9e7 | 2009-11-29 16:55:45 -0800 | [diff] [blame] | 1169 | if (!tb[DCB_ATTR_BCN] || !netdev->dcbnl_ops->setbcncfg || |
| 1170 | !netdev->dcbnl_ops->setbcnrp) |
Alexander Duyck | 859ee3c | 2008-11-20 21:10:23 -0800 | [diff] [blame] | 1171 | return ret; |
| 1172 | |
| 1173 | ret = nla_parse_nested(data, DCB_BCN_ATTR_MAX, |
| 1174 | tb[DCB_ATTR_BCN], |
| 1175 | dcbnl_pfc_up_nest); |
| 1176 | if (ret) |
| 1177 | goto err; |
| 1178 | |
| 1179 | for (i = DCB_BCN_ATTR_RP_0; i <= DCB_BCN_ATTR_RP_7; i++) { |
| 1180 | if (data[i] == NULL) |
| 1181 | continue; |
| 1182 | value_byte = nla_get_u8(data[i]); |
| 1183 | netdev->dcbnl_ops->setbcnrp(netdev, |
| 1184 | data[i]->nla_type - DCB_BCN_ATTR_RP_0, value_byte); |
| 1185 | } |
| 1186 | |
Don Skidmore | f4314e8 | 2008-12-21 20:10:29 -0800 | [diff] [blame] | 1187 | for (i = DCB_BCN_ATTR_BCNA_0; i <= DCB_BCN_ATTR_RI; i++) { |
Alexander Duyck | 859ee3c | 2008-11-20 21:10:23 -0800 | [diff] [blame] | 1188 | if (data[i] == NULL) |
| 1189 | continue; |
| 1190 | value_int = nla_get_u32(data[i]); |
| 1191 | netdev->dcbnl_ops->setbcncfg(netdev, |
| 1192 | i, value_int); |
| 1193 | } |
| 1194 | |
| 1195 | ret = dcbnl_reply(0, RTM_SETDCB, DCB_CMD_BCN_SCFG, DCB_ATTR_BCN, |
| 1196 | pid, seq, flags); |
| 1197 | err: |
| 1198 | return ret; |
| 1199 | } |
| 1200 | |
Shmulik Ravid | dc6ed1d | 2011-02-27 05:04:38 +0000 | [diff] [blame] | 1201 | static int dcbnl_build_peer_app(struct net_device *netdev, struct sk_buff* skb, |
| 1202 | int app_nested_type, int app_info_type, |
| 1203 | int app_entry_type) |
Shmulik Ravid | eed8471 | 2011-02-27 05:04:31 +0000 | [diff] [blame] | 1204 | { |
| 1205 | struct dcb_peer_app_info info; |
| 1206 | struct dcb_app *table = NULL; |
| 1207 | const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops; |
| 1208 | u16 app_count; |
| 1209 | int err; |
| 1210 | |
| 1211 | |
| 1212 | /** |
| 1213 | * retrieve the peer app configuration form the driver. If the driver |
| 1214 | * handlers fail exit without doing anything |
| 1215 | */ |
| 1216 | err = ops->peer_getappinfo(netdev, &info, &app_count); |
| 1217 | if (!err && app_count) { |
| 1218 | table = kmalloc(sizeof(struct dcb_app) * app_count, GFP_KERNEL); |
| 1219 | if (!table) |
| 1220 | return -ENOMEM; |
| 1221 | |
| 1222 | err = ops->peer_getapptable(netdev, table); |
| 1223 | } |
| 1224 | |
| 1225 | if (!err) { |
| 1226 | u16 i; |
| 1227 | struct nlattr *app; |
| 1228 | |
| 1229 | /** |
| 1230 | * build the message, from here on the only possible failure |
| 1231 | * is due to the skb size |
| 1232 | */ |
| 1233 | err = -EMSGSIZE; |
| 1234 | |
Shmulik Ravid | dc6ed1d | 2011-02-27 05:04:38 +0000 | [diff] [blame] | 1235 | app = nla_nest_start(skb, app_nested_type); |
Shmulik Ravid | eed8471 | 2011-02-27 05:04:31 +0000 | [diff] [blame] | 1236 | if (!app) |
| 1237 | goto nla_put_failure; |
| 1238 | |
David S. Miller | 1eb4c97 | 2012-04-01 20:03:01 -0400 | [diff] [blame] | 1239 | if (app_info_type && |
| 1240 | nla_put(skb, app_info_type, sizeof(info), &info)) |
| 1241 | goto nla_put_failure; |
Shmulik Ravid | dc6ed1d | 2011-02-27 05:04:38 +0000 | [diff] [blame] | 1242 | |
David S. Miller | 1eb4c97 | 2012-04-01 20:03:01 -0400 | [diff] [blame] | 1243 | for (i = 0; i < app_count; i++) { |
| 1244 | if (nla_put(skb, app_entry_type, sizeof(struct dcb_app), |
| 1245 | &table[i])) |
| 1246 | goto nla_put_failure; |
| 1247 | } |
Shmulik Ravid | eed8471 | 2011-02-27 05:04:31 +0000 | [diff] [blame] | 1248 | nla_nest_end(skb, app); |
| 1249 | } |
| 1250 | err = 0; |
| 1251 | |
| 1252 | nla_put_failure: |
| 1253 | kfree(table); |
| 1254 | return err; |
| 1255 | } |
John Fastabend | 3e29027 | 2010-12-30 09:25:46 +0000 | [diff] [blame] | 1256 | |
| 1257 | /* Handle IEEE 802.1Qaz GET commands. */ |
John Fastabend | 314b477 | 2011-06-21 07:34:37 +0000 | [diff] [blame] | 1258 | static int dcbnl_ieee_fill(struct sk_buff *skb, struct net_device *netdev) |
John Fastabend | 3e29027 | 2010-12-30 09:25:46 +0000 | [diff] [blame] | 1259 | { |
John Fastabend | 9ab933a | 2010-12-30 09:26:31 +0000 | [diff] [blame] | 1260 | struct nlattr *ieee, *app; |
| 1261 | struct dcb_app_type *itr; |
John Fastabend | 3e29027 | 2010-12-30 09:25:46 +0000 | [diff] [blame] | 1262 | const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops; |
John Fastabend | c7797ba | 2011-06-21 07:34:31 +0000 | [diff] [blame] | 1263 | int dcbx; |
John Fastabend | 314b477 | 2011-06-21 07:34:37 +0000 | [diff] [blame] | 1264 | int err = -EMSGSIZE; |
John Fastabend | 3e29027 | 2010-12-30 09:25:46 +0000 | [diff] [blame] | 1265 | |
David S. Miller | 1eb4c97 | 2012-04-01 20:03:01 -0400 | [diff] [blame] | 1266 | if (nla_put_string(skb, DCB_ATTR_IFNAME, netdev->name)) |
| 1267 | goto nla_put_failure; |
John Fastabend | 3e29027 | 2010-12-30 09:25:46 +0000 | [diff] [blame] | 1268 | ieee = nla_nest_start(skb, DCB_ATTR_IEEE); |
| 1269 | if (!ieee) |
| 1270 | goto nla_put_failure; |
| 1271 | |
| 1272 | if (ops->ieee_getets) { |
| 1273 | struct ieee_ets ets; |
| 1274 | err = ops->ieee_getets(netdev, &ets); |
David S. Miller | 1eb4c97 | 2012-04-01 20:03:01 -0400 | [diff] [blame] | 1275 | if (!err && |
| 1276 | nla_put(skb, DCB_ATTR_IEEE_ETS, sizeof(ets), &ets)) |
| 1277 | goto nla_put_failure; |
John Fastabend | 3e29027 | 2010-12-30 09:25:46 +0000 | [diff] [blame] | 1278 | } |
| 1279 | |
Amir Vadai | 08f10af | 2012-04-04 21:33:30 +0000 | [diff] [blame] | 1280 | if (ops->ieee_getmaxrate) { |
| 1281 | struct ieee_maxrate maxrate; |
| 1282 | err = ops->ieee_getmaxrate(netdev, &maxrate); |
| 1283 | if (!err) { |
| 1284 | err = nla_put(skb, DCB_ATTR_IEEE_MAXRATE, |
| 1285 | sizeof(maxrate), &maxrate); |
| 1286 | if (err) |
| 1287 | goto nla_put_failure; |
| 1288 | } |
| 1289 | } |
| 1290 | |
John Fastabend | 3e29027 | 2010-12-30 09:25:46 +0000 | [diff] [blame] | 1291 | if (ops->ieee_getpfc) { |
| 1292 | struct ieee_pfc pfc; |
| 1293 | err = ops->ieee_getpfc(netdev, &pfc); |
David S. Miller | 1eb4c97 | 2012-04-01 20:03:01 -0400 | [diff] [blame] | 1294 | if (!err && |
| 1295 | nla_put(skb, DCB_ATTR_IEEE_PFC, sizeof(pfc), &pfc)) |
| 1296 | goto nla_put_failure; |
John Fastabend | 3e29027 | 2010-12-30 09:25:46 +0000 | [diff] [blame] | 1297 | } |
| 1298 | |
John Fastabend | 9ab933a | 2010-12-30 09:26:31 +0000 | [diff] [blame] | 1299 | app = nla_nest_start(skb, DCB_ATTR_IEEE_APP_TABLE); |
| 1300 | if (!app) |
| 1301 | goto nla_put_failure; |
| 1302 | |
| 1303 | spin_lock(&dcb_lock); |
| 1304 | list_for_each_entry(itr, &dcb_app_list, list) { |
Mark Rustad | e290ed8 | 2011-10-06 08:52:33 +0000 | [diff] [blame] | 1305 | if (itr->ifindex == netdev->ifindex) { |
Dan Carpenter | 70bfa2d | 2011-01-04 21:03:12 +0000 | [diff] [blame] | 1306 | err = nla_put(skb, DCB_ATTR_IEEE_APP, sizeof(itr->app), |
| 1307 | &itr->app); |
| 1308 | if (err) { |
| 1309 | spin_unlock(&dcb_lock); |
| 1310 | goto nla_put_failure; |
| 1311 | } |
| 1312 | } |
John Fastabend | 9ab933a | 2010-12-30 09:26:31 +0000 | [diff] [blame] | 1313 | } |
John Fastabend | c7797ba | 2011-06-21 07:34:31 +0000 | [diff] [blame] | 1314 | |
| 1315 | if (netdev->dcbnl_ops->getdcbx) |
| 1316 | dcbx = netdev->dcbnl_ops->getdcbx(netdev); |
| 1317 | else |
| 1318 | dcbx = -EOPNOTSUPP; |
| 1319 | |
John Fastabend | 9ab933a | 2010-12-30 09:26:31 +0000 | [diff] [blame] | 1320 | spin_unlock(&dcb_lock); |
| 1321 | nla_nest_end(skb, app); |
| 1322 | |
Shmulik Ravid | eed8471 | 2011-02-27 05:04:31 +0000 | [diff] [blame] | 1323 | /* get peer info if available */ |
| 1324 | if (ops->ieee_peer_getets) { |
| 1325 | struct ieee_ets ets; |
| 1326 | err = ops->ieee_peer_getets(netdev, &ets); |
David S. Miller | 1eb4c97 | 2012-04-01 20:03:01 -0400 | [diff] [blame] | 1327 | if (!err && |
| 1328 | nla_put(skb, DCB_ATTR_IEEE_PEER_ETS, sizeof(ets), &ets)) |
| 1329 | goto nla_put_failure; |
Shmulik Ravid | eed8471 | 2011-02-27 05:04:31 +0000 | [diff] [blame] | 1330 | } |
| 1331 | |
| 1332 | if (ops->ieee_peer_getpfc) { |
| 1333 | struct ieee_pfc pfc; |
| 1334 | err = ops->ieee_peer_getpfc(netdev, &pfc); |
David S. Miller | 1eb4c97 | 2012-04-01 20:03:01 -0400 | [diff] [blame] | 1335 | if (!err && |
| 1336 | nla_put(skb, DCB_ATTR_IEEE_PEER_PFC, sizeof(pfc), &pfc)) |
| 1337 | goto nla_put_failure; |
Shmulik Ravid | eed8471 | 2011-02-27 05:04:31 +0000 | [diff] [blame] | 1338 | } |
| 1339 | |
| 1340 | if (ops->peer_getappinfo && ops->peer_getapptable) { |
Shmulik Ravid | dc6ed1d | 2011-02-27 05:04:38 +0000 | [diff] [blame] | 1341 | err = dcbnl_build_peer_app(netdev, skb, |
| 1342 | DCB_ATTR_IEEE_PEER_APP, |
| 1343 | DCB_ATTR_IEEE_APP_UNSPEC, |
| 1344 | DCB_ATTR_IEEE_APP); |
Shmulik Ravid | eed8471 | 2011-02-27 05:04:31 +0000 | [diff] [blame] | 1345 | if (err) |
| 1346 | goto nla_put_failure; |
| 1347 | } |
| 1348 | |
John Fastabend | 3e29027 | 2010-12-30 09:25:46 +0000 | [diff] [blame] | 1349 | nla_nest_end(skb, ieee); |
John Fastabend | c7797ba | 2011-06-21 07:34:31 +0000 | [diff] [blame] | 1350 | if (dcbx >= 0) { |
| 1351 | err = nla_put_u8(skb, DCB_ATTR_DCBX, dcbx); |
| 1352 | if (err) |
| 1353 | goto nla_put_failure; |
| 1354 | } |
John Fastabend | 3e29027 | 2010-12-30 09:25:46 +0000 | [diff] [blame] | 1355 | |
John Fastabend | 314b477 | 2011-06-21 07:34:37 +0000 | [diff] [blame] | 1356 | return 0; |
| 1357 | |
John Fastabend | 3e29027 | 2010-12-30 09:25:46 +0000 | [diff] [blame] | 1358 | nla_put_failure: |
John Fastabend | 314b477 | 2011-06-21 07:34:37 +0000 | [diff] [blame] | 1359 | return err; |
John Fastabend | 3e29027 | 2010-12-30 09:25:46 +0000 | [diff] [blame] | 1360 | } |
| 1361 | |
Shmulik Ravid | 5b7f762 | 2011-07-05 06:16:25 +0000 | [diff] [blame] | 1362 | static int dcbnl_cee_pg_fill(struct sk_buff *skb, struct net_device *dev, |
| 1363 | int dir) |
| 1364 | { |
| 1365 | u8 pgid, up_map, prio, tc_pct; |
| 1366 | const struct dcbnl_rtnl_ops *ops = dev->dcbnl_ops; |
| 1367 | int i = dir ? DCB_ATTR_CEE_TX_PG : DCB_ATTR_CEE_RX_PG; |
| 1368 | struct nlattr *pg = nla_nest_start(skb, i); |
| 1369 | |
| 1370 | if (!pg) |
| 1371 | goto nla_put_failure; |
| 1372 | |
| 1373 | for (i = DCB_PG_ATTR_TC_0; i <= DCB_PG_ATTR_TC_7; i++) { |
| 1374 | struct nlattr *tc_nest = nla_nest_start(skb, i); |
| 1375 | |
| 1376 | if (!tc_nest) |
| 1377 | goto nla_put_failure; |
| 1378 | |
| 1379 | pgid = DCB_ATTR_VALUE_UNDEFINED; |
| 1380 | prio = DCB_ATTR_VALUE_UNDEFINED; |
| 1381 | tc_pct = DCB_ATTR_VALUE_UNDEFINED; |
| 1382 | up_map = DCB_ATTR_VALUE_UNDEFINED; |
| 1383 | |
| 1384 | if (!dir) |
| 1385 | ops->getpgtccfgrx(dev, i - DCB_PG_ATTR_TC_0, |
| 1386 | &prio, &pgid, &tc_pct, &up_map); |
| 1387 | else |
| 1388 | ops->getpgtccfgtx(dev, i - DCB_PG_ATTR_TC_0, |
| 1389 | &prio, &pgid, &tc_pct, &up_map); |
| 1390 | |
David S. Miller | 1eb4c97 | 2012-04-01 20:03:01 -0400 | [diff] [blame] | 1391 | if (nla_put_u8(skb, DCB_TC_ATTR_PARAM_PGID, pgid) || |
| 1392 | nla_put_u8(skb, DCB_TC_ATTR_PARAM_UP_MAPPING, up_map) || |
| 1393 | nla_put_u8(skb, DCB_TC_ATTR_PARAM_STRICT_PRIO, prio) || |
| 1394 | nla_put_u8(skb, DCB_TC_ATTR_PARAM_BW_PCT, tc_pct)) |
| 1395 | goto nla_put_failure; |
Shmulik Ravid | 5b7f762 | 2011-07-05 06:16:25 +0000 | [diff] [blame] | 1396 | nla_nest_end(skb, tc_nest); |
| 1397 | } |
| 1398 | |
| 1399 | for (i = DCB_PG_ATTR_BW_ID_0; i <= DCB_PG_ATTR_BW_ID_7; i++) { |
| 1400 | tc_pct = DCB_ATTR_VALUE_UNDEFINED; |
| 1401 | |
| 1402 | if (!dir) |
| 1403 | ops->getpgbwgcfgrx(dev, i - DCB_PG_ATTR_BW_ID_0, |
| 1404 | &tc_pct); |
| 1405 | else |
| 1406 | ops->getpgbwgcfgtx(dev, i - DCB_PG_ATTR_BW_ID_0, |
| 1407 | &tc_pct); |
David S. Miller | 1eb4c97 | 2012-04-01 20:03:01 -0400 | [diff] [blame] | 1408 | if (nla_put_u8(skb, i, tc_pct)) |
| 1409 | goto nla_put_failure; |
Shmulik Ravid | 5b7f762 | 2011-07-05 06:16:25 +0000 | [diff] [blame] | 1410 | } |
| 1411 | nla_nest_end(skb, pg); |
| 1412 | return 0; |
| 1413 | |
| 1414 | nla_put_failure: |
| 1415 | return -EMSGSIZE; |
| 1416 | } |
| 1417 | |
| 1418 | static int dcbnl_cee_fill(struct sk_buff *skb, struct net_device *netdev) |
| 1419 | { |
| 1420 | struct nlattr *cee, *app; |
| 1421 | struct dcb_app_type *itr; |
| 1422 | const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops; |
| 1423 | int dcbx, i, err = -EMSGSIZE; |
| 1424 | u8 value; |
| 1425 | |
David S. Miller | 1eb4c97 | 2012-04-01 20:03:01 -0400 | [diff] [blame] | 1426 | if (nla_put_string(skb, DCB_ATTR_IFNAME, netdev->name)) |
| 1427 | goto nla_put_failure; |
Shmulik Ravid | 5b7f762 | 2011-07-05 06:16:25 +0000 | [diff] [blame] | 1428 | cee = nla_nest_start(skb, DCB_ATTR_CEE); |
| 1429 | if (!cee) |
| 1430 | goto nla_put_failure; |
| 1431 | |
| 1432 | /* local pg */ |
| 1433 | if (ops->getpgtccfgtx && ops->getpgbwgcfgtx) { |
| 1434 | err = dcbnl_cee_pg_fill(skb, netdev, 1); |
| 1435 | if (err) |
| 1436 | goto nla_put_failure; |
| 1437 | } |
| 1438 | |
| 1439 | if (ops->getpgtccfgrx && ops->getpgbwgcfgrx) { |
| 1440 | err = dcbnl_cee_pg_fill(skb, netdev, 0); |
| 1441 | if (err) |
| 1442 | goto nla_put_failure; |
| 1443 | } |
| 1444 | |
| 1445 | /* local pfc */ |
| 1446 | if (ops->getpfccfg) { |
| 1447 | struct nlattr *pfc_nest = nla_nest_start(skb, DCB_ATTR_CEE_PFC); |
| 1448 | |
| 1449 | if (!pfc_nest) |
| 1450 | goto nla_put_failure; |
| 1451 | |
| 1452 | for (i = DCB_PFC_UP_ATTR_0; i <= DCB_PFC_UP_ATTR_7; i++) { |
| 1453 | ops->getpfccfg(netdev, i - DCB_PFC_UP_ATTR_0, &value); |
David S. Miller | 1eb4c97 | 2012-04-01 20:03:01 -0400 | [diff] [blame] | 1454 | if (nla_put_u8(skb, i, value)) |
| 1455 | goto nla_put_failure; |
Shmulik Ravid | 5b7f762 | 2011-07-05 06:16:25 +0000 | [diff] [blame] | 1456 | } |
| 1457 | nla_nest_end(skb, pfc_nest); |
| 1458 | } |
| 1459 | |
| 1460 | /* local app */ |
| 1461 | spin_lock(&dcb_lock); |
| 1462 | app = nla_nest_start(skb, DCB_ATTR_CEE_APP_TABLE); |
| 1463 | if (!app) |
Dan Carpenter | 40f5d72 | 2011-07-07 21:27:24 +0000 | [diff] [blame] | 1464 | goto dcb_unlock; |
Shmulik Ravid | 5b7f762 | 2011-07-05 06:16:25 +0000 | [diff] [blame] | 1465 | |
| 1466 | list_for_each_entry(itr, &dcb_app_list, list) { |
Mark Rustad | e290ed8 | 2011-10-06 08:52:33 +0000 | [diff] [blame] | 1467 | if (itr->ifindex == netdev->ifindex) { |
Shmulik Ravid | 5b7f762 | 2011-07-05 06:16:25 +0000 | [diff] [blame] | 1468 | struct nlattr *app_nest = nla_nest_start(skb, |
| 1469 | DCB_ATTR_APP); |
| 1470 | if (!app_nest) |
| 1471 | goto dcb_unlock; |
| 1472 | |
| 1473 | err = nla_put_u8(skb, DCB_APP_ATTR_IDTYPE, |
| 1474 | itr->app.selector); |
| 1475 | if (err) |
| 1476 | goto dcb_unlock; |
| 1477 | |
| 1478 | err = nla_put_u16(skb, DCB_APP_ATTR_ID, |
| 1479 | itr->app.protocol); |
| 1480 | if (err) |
| 1481 | goto dcb_unlock; |
| 1482 | |
| 1483 | err = nla_put_u8(skb, DCB_APP_ATTR_PRIORITY, |
| 1484 | itr->app.priority); |
| 1485 | if (err) |
| 1486 | goto dcb_unlock; |
| 1487 | |
| 1488 | nla_nest_end(skb, app_nest); |
| 1489 | } |
| 1490 | } |
| 1491 | nla_nest_end(skb, app); |
| 1492 | |
| 1493 | if (netdev->dcbnl_ops->getdcbx) |
| 1494 | dcbx = netdev->dcbnl_ops->getdcbx(netdev); |
| 1495 | else |
| 1496 | dcbx = -EOPNOTSUPP; |
| 1497 | |
| 1498 | spin_unlock(&dcb_lock); |
| 1499 | |
| 1500 | /* features flags */ |
| 1501 | if (ops->getfeatcfg) { |
| 1502 | struct nlattr *feat = nla_nest_start(skb, DCB_ATTR_CEE_FEAT); |
| 1503 | if (!feat) |
| 1504 | goto nla_put_failure; |
| 1505 | |
| 1506 | for (i = DCB_FEATCFG_ATTR_ALL + 1; i <= DCB_FEATCFG_ATTR_MAX; |
| 1507 | i++) |
David S. Miller | 1eb4c97 | 2012-04-01 20:03:01 -0400 | [diff] [blame] | 1508 | if (!ops->getfeatcfg(netdev, i, &value) && |
| 1509 | nla_put_u8(skb, i, value)) |
| 1510 | goto nla_put_failure; |
Shmulik Ravid | 5b7f762 | 2011-07-05 06:16:25 +0000 | [diff] [blame] | 1511 | |
| 1512 | nla_nest_end(skb, feat); |
| 1513 | } |
| 1514 | |
| 1515 | /* peer info if available */ |
| 1516 | if (ops->cee_peer_getpg) { |
| 1517 | struct cee_pg pg; |
| 1518 | err = ops->cee_peer_getpg(netdev, &pg); |
David S. Miller | 1eb4c97 | 2012-04-01 20:03:01 -0400 | [diff] [blame] | 1519 | if (!err && |
| 1520 | nla_put(skb, DCB_ATTR_CEE_PEER_PG, sizeof(pg), &pg)) |
| 1521 | goto nla_put_failure; |
Shmulik Ravid | 5b7f762 | 2011-07-05 06:16:25 +0000 | [diff] [blame] | 1522 | } |
| 1523 | |
| 1524 | if (ops->cee_peer_getpfc) { |
| 1525 | struct cee_pfc pfc; |
| 1526 | err = ops->cee_peer_getpfc(netdev, &pfc); |
David S. Miller | 1eb4c97 | 2012-04-01 20:03:01 -0400 | [diff] [blame] | 1527 | if (!err && |
| 1528 | nla_put(skb, DCB_ATTR_CEE_PEER_PFC, sizeof(pfc), &pfc)) |
| 1529 | goto nla_put_failure; |
Shmulik Ravid | 5b7f762 | 2011-07-05 06:16:25 +0000 | [diff] [blame] | 1530 | } |
| 1531 | |
| 1532 | if (ops->peer_getappinfo && ops->peer_getapptable) { |
| 1533 | err = dcbnl_build_peer_app(netdev, skb, |
| 1534 | DCB_ATTR_CEE_PEER_APP_TABLE, |
| 1535 | DCB_ATTR_CEE_PEER_APP_INFO, |
| 1536 | DCB_ATTR_CEE_PEER_APP); |
| 1537 | if (err) |
| 1538 | goto nla_put_failure; |
| 1539 | } |
| 1540 | nla_nest_end(skb, cee); |
| 1541 | |
| 1542 | /* DCBX state */ |
| 1543 | if (dcbx >= 0) { |
| 1544 | err = nla_put_u8(skb, DCB_ATTR_DCBX, dcbx); |
| 1545 | if (err) |
| 1546 | goto nla_put_failure; |
| 1547 | } |
| 1548 | return 0; |
| 1549 | |
| 1550 | dcb_unlock: |
| 1551 | spin_unlock(&dcb_lock); |
| 1552 | nla_put_failure: |
| 1553 | return err; |
| 1554 | } |
| 1555 | |
| 1556 | static int dcbnl_notify(struct net_device *dev, int event, int cmd, |
| 1557 | u32 seq, u32 pid, int dcbx_ver) |
John Fastabend | 314b477 | 2011-06-21 07:34:37 +0000 | [diff] [blame] | 1558 | { |
| 1559 | struct net *net = dev_net(dev); |
| 1560 | struct sk_buff *skb; |
| 1561 | struct nlmsghdr *nlh; |
| 1562 | struct dcbmsg *dcb; |
| 1563 | const struct dcbnl_rtnl_ops *ops = dev->dcbnl_ops; |
| 1564 | int err; |
| 1565 | |
| 1566 | if (!ops) |
| 1567 | return -EOPNOTSUPP; |
| 1568 | |
| 1569 | skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
| 1570 | if (!skb) |
| 1571 | return -ENOBUFS; |
| 1572 | |
| 1573 | nlh = nlmsg_put(skb, pid, 0, event, sizeof(*dcb), 0); |
| 1574 | if (nlh == NULL) { |
Dan Carpenter | 4d054f2 | 2011-06-23 03:14:42 -0700 | [diff] [blame] | 1575 | nlmsg_free(skb); |
John Fastabend | 314b477 | 2011-06-21 07:34:37 +0000 | [diff] [blame] | 1576 | return -EMSGSIZE; |
| 1577 | } |
| 1578 | |
| 1579 | dcb = NLMSG_DATA(nlh); |
| 1580 | dcb->dcb_family = AF_UNSPEC; |
| 1581 | dcb->cmd = cmd; |
| 1582 | |
Shmulik Ravid | 5b7f762 | 2011-07-05 06:16:25 +0000 | [diff] [blame] | 1583 | if (dcbx_ver == DCB_CAP_DCBX_VER_IEEE) |
| 1584 | err = dcbnl_ieee_fill(skb, dev); |
| 1585 | else |
| 1586 | err = dcbnl_cee_fill(skb, dev); |
| 1587 | |
John Fastabend | 314b477 | 2011-06-21 07:34:37 +0000 | [diff] [blame] | 1588 | if (err < 0) { |
| 1589 | /* Report error to broadcast listeners */ |
| 1590 | nlmsg_cancel(skb, nlh); |
| 1591 | kfree_skb(skb); |
| 1592 | rtnl_set_sk_err(net, RTNLGRP_DCB, err); |
| 1593 | } else { |
| 1594 | /* End nlmsg and notify broadcast listeners */ |
| 1595 | nlmsg_end(skb, nlh); |
| 1596 | rtnl_notify(skb, net, 0, RTNLGRP_DCB, NULL, GFP_KERNEL); |
| 1597 | } |
| 1598 | |
| 1599 | return err; |
| 1600 | } |
Shmulik Ravid | 5b7f762 | 2011-07-05 06:16:25 +0000 | [diff] [blame] | 1601 | |
| 1602 | int dcbnl_ieee_notify(struct net_device *dev, int event, int cmd, |
| 1603 | u32 seq, u32 pid) |
| 1604 | { |
| 1605 | return dcbnl_notify(dev, event, cmd, seq, pid, DCB_CAP_DCBX_VER_IEEE); |
| 1606 | } |
| 1607 | EXPORT_SYMBOL(dcbnl_ieee_notify); |
| 1608 | |
| 1609 | int dcbnl_cee_notify(struct net_device *dev, int event, int cmd, |
| 1610 | u32 seq, u32 pid) |
| 1611 | { |
| 1612 | return dcbnl_notify(dev, event, cmd, seq, pid, DCB_CAP_DCBX_VER_CEE); |
| 1613 | } |
| 1614 | EXPORT_SYMBOL(dcbnl_cee_notify); |
John Fastabend | 314b477 | 2011-06-21 07:34:37 +0000 | [diff] [blame] | 1615 | |
| 1616 | /* Handle IEEE 802.1Qaz SET commands. If any requested operation can not |
| 1617 | * be completed the entire msg is aborted and error value is returned. |
| 1618 | * No attempt is made to reconcile the case where only part of the |
| 1619 | * cmd can be completed. |
| 1620 | */ |
| 1621 | static int dcbnl_ieee_set(struct net_device *netdev, struct nlattr **tb, |
| 1622 | u32 pid, u32 seq, u16 flags) |
| 1623 | { |
| 1624 | const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops; |
| 1625 | struct nlattr *ieee[DCB_ATTR_IEEE_MAX + 1]; |
| 1626 | int err = -EOPNOTSUPP; |
| 1627 | |
| 1628 | if (!ops) |
| 1629 | return err; |
| 1630 | |
John Fastabend | 4003b65 | 2011-06-21 07:35:04 +0000 | [diff] [blame] | 1631 | if (!tb[DCB_ATTR_IEEE]) |
| 1632 | return -EINVAL; |
| 1633 | |
John Fastabend | 314b477 | 2011-06-21 07:34:37 +0000 | [diff] [blame] | 1634 | err = nla_parse_nested(ieee, DCB_ATTR_IEEE_MAX, |
| 1635 | tb[DCB_ATTR_IEEE], dcbnl_ieee_policy); |
| 1636 | if (err) |
| 1637 | return err; |
| 1638 | |
| 1639 | if (ieee[DCB_ATTR_IEEE_ETS] && ops->ieee_setets) { |
| 1640 | struct ieee_ets *ets = nla_data(ieee[DCB_ATTR_IEEE_ETS]); |
| 1641 | err = ops->ieee_setets(netdev, ets); |
| 1642 | if (err) |
| 1643 | goto err; |
| 1644 | } |
| 1645 | |
Amir Vadai | 08f10af | 2012-04-04 21:33:30 +0000 | [diff] [blame] | 1646 | if (ieee[DCB_ATTR_IEEE_MAXRATE] && ops->ieee_setmaxrate) { |
| 1647 | struct ieee_maxrate *maxrate = |
| 1648 | nla_data(ieee[DCB_ATTR_IEEE_MAXRATE]); |
| 1649 | err = ops->ieee_setmaxrate(netdev, maxrate); |
| 1650 | if (err) |
| 1651 | goto err; |
| 1652 | } |
| 1653 | |
John Fastabend | 314b477 | 2011-06-21 07:34:37 +0000 | [diff] [blame] | 1654 | if (ieee[DCB_ATTR_IEEE_PFC] && ops->ieee_setpfc) { |
| 1655 | struct ieee_pfc *pfc = nla_data(ieee[DCB_ATTR_IEEE_PFC]); |
| 1656 | err = ops->ieee_setpfc(netdev, pfc); |
| 1657 | if (err) |
| 1658 | goto err; |
| 1659 | } |
| 1660 | |
| 1661 | if (ieee[DCB_ATTR_IEEE_APP_TABLE]) { |
| 1662 | struct nlattr *attr; |
| 1663 | int rem; |
| 1664 | |
| 1665 | nla_for_each_nested(attr, ieee[DCB_ATTR_IEEE_APP_TABLE], rem) { |
| 1666 | struct dcb_app *app_data; |
| 1667 | if (nla_type(attr) != DCB_ATTR_IEEE_APP) |
| 1668 | continue; |
| 1669 | app_data = nla_data(attr); |
| 1670 | if (ops->ieee_setapp) |
| 1671 | err = ops->ieee_setapp(netdev, app_data); |
| 1672 | else |
John Fastabend | b6db217 | 2011-06-21 07:34:42 +0000 | [diff] [blame] | 1673 | err = dcb_ieee_setapp(netdev, app_data); |
John Fastabend | 314b477 | 2011-06-21 07:34:37 +0000 | [diff] [blame] | 1674 | if (err) |
| 1675 | goto err; |
| 1676 | } |
| 1677 | } |
| 1678 | |
| 1679 | err: |
| 1680 | dcbnl_reply(err, RTM_SETDCB, DCB_CMD_IEEE_SET, DCB_ATTR_IEEE, |
| 1681 | pid, seq, flags); |
Shmulik Ravid | 5b7f762 | 2011-07-05 06:16:25 +0000 | [diff] [blame] | 1682 | dcbnl_ieee_notify(netdev, RTM_SETDCB, DCB_CMD_IEEE_SET, seq, 0); |
John Fastabend | 314b477 | 2011-06-21 07:34:37 +0000 | [diff] [blame] | 1683 | return err; |
| 1684 | } |
| 1685 | |
| 1686 | static int dcbnl_ieee_get(struct net_device *netdev, struct nlattr **tb, |
| 1687 | u32 pid, u32 seq, u16 flags) |
| 1688 | { |
| 1689 | struct net *net = dev_net(netdev); |
| 1690 | struct sk_buff *skb; |
| 1691 | struct nlmsghdr *nlh; |
| 1692 | struct dcbmsg *dcb; |
| 1693 | const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops; |
| 1694 | int err; |
| 1695 | |
| 1696 | if (!ops) |
| 1697 | return -EOPNOTSUPP; |
| 1698 | |
| 1699 | skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
| 1700 | if (!skb) |
| 1701 | return -ENOBUFS; |
| 1702 | |
| 1703 | nlh = nlmsg_put(skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags); |
| 1704 | if (nlh == NULL) { |
Dan Carpenter | 4d054f2 | 2011-06-23 03:14:42 -0700 | [diff] [blame] | 1705 | nlmsg_free(skb); |
John Fastabend | 314b477 | 2011-06-21 07:34:37 +0000 | [diff] [blame] | 1706 | return -EMSGSIZE; |
| 1707 | } |
| 1708 | |
| 1709 | dcb = NLMSG_DATA(nlh); |
| 1710 | dcb->dcb_family = AF_UNSPEC; |
| 1711 | dcb->cmd = DCB_CMD_IEEE_GET; |
| 1712 | |
| 1713 | err = dcbnl_ieee_fill(skb, netdev); |
| 1714 | |
| 1715 | if (err < 0) { |
| 1716 | nlmsg_cancel(skb, nlh); |
| 1717 | kfree_skb(skb); |
| 1718 | } else { |
| 1719 | nlmsg_end(skb, nlh); |
| 1720 | err = rtnl_unicast(skb, net, pid); |
| 1721 | } |
| 1722 | |
| 1723 | return err; |
| 1724 | } |
John Fastabend | f9ae7e4 | 2011-06-21 07:34:48 +0000 | [diff] [blame] | 1725 | |
| 1726 | static int dcbnl_ieee_del(struct net_device *netdev, struct nlattr **tb, |
| 1727 | u32 pid, u32 seq, u16 flags) |
| 1728 | { |
| 1729 | const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops; |
| 1730 | struct nlattr *ieee[DCB_ATTR_IEEE_MAX + 1]; |
| 1731 | int err = -EOPNOTSUPP; |
| 1732 | |
| 1733 | if (!ops) |
| 1734 | return -EOPNOTSUPP; |
| 1735 | |
| 1736 | if (!tb[DCB_ATTR_IEEE]) |
| 1737 | return -EINVAL; |
| 1738 | |
| 1739 | err = nla_parse_nested(ieee, DCB_ATTR_IEEE_MAX, |
| 1740 | tb[DCB_ATTR_IEEE], dcbnl_ieee_policy); |
| 1741 | if (err) |
| 1742 | return err; |
| 1743 | |
| 1744 | if (ieee[DCB_ATTR_IEEE_APP_TABLE]) { |
| 1745 | struct nlattr *attr; |
| 1746 | int rem; |
| 1747 | |
| 1748 | nla_for_each_nested(attr, ieee[DCB_ATTR_IEEE_APP_TABLE], rem) { |
| 1749 | struct dcb_app *app_data; |
| 1750 | |
| 1751 | if (nla_type(attr) != DCB_ATTR_IEEE_APP) |
| 1752 | continue; |
| 1753 | app_data = nla_data(attr); |
| 1754 | if (ops->ieee_delapp) |
| 1755 | err = ops->ieee_delapp(netdev, app_data); |
| 1756 | else |
| 1757 | err = dcb_ieee_delapp(netdev, app_data); |
| 1758 | if (err) |
| 1759 | goto err; |
| 1760 | } |
| 1761 | } |
| 1762 | |
| 1763 | err: |
| 1764 | dcbnl_reply(err, RTM_SETDCB, DCB_CMD_IEEE_DEL, DCB_ATTR_IEEE, |
| 1765 | pid, seq, flags); |
Shmulik Ravid | 5b7f762 | 2011-07-05 06:16:25 +0000 | [diff] [blame] | 1766 | dcbnl_ieee_notify(netdev, RTM_SETDCB, DCB_CMD_IEEE_DEL, seq, 0); |
John Fastabend | f9ae7e4 | 2011-06-21 07:34:48 +0000 | [diff] [blame] | 1767 | return err; |
| 1768 | } |
| 1769 | |
| 1770 | |
Shmulik Ravid | 6241b62 | 2010-12-30 06:26:48 +0000 | [diff] [blame] | 1771 | /* DCBX configuration */ |
| 1772 | static int dcbnl_getdcbx(struct net_device *netdev, struct nlattr **tb, |
| 1773 | u32 pid, u32 seq, u16 flags) |
| 1774 | { |
Shmulik Ravid | 7f891cf | 2011-01-03 08:04:59 +0000 | [diff] [blame] | 1775 | int ret; |
Shmulik Ravid | 6241b62 | 2010-12-30 06:26:48 +0000 | [diff] [blame] | 1776 | |
| 1777 | if (!netdev->dcbnl_ops->getdcbx) |
Shmulik Ravid | 7f891cf | 2011-01-03 08:04:59 +0000 | [diff] [blame] | 1778 | return -EOPNOTSUPP; |
Shmulik Ravid | 6241b62 | 2010-12-30 06:26:48 +0000 | [diff] [blame] | 1779 | |
| 1780 | ret = dcbnl_reply(netdev->dcbnl_ops->getdcbx(netdev), RTM_GETDCB, |
| 1781 | DCB_CMD_GDCBX, DCB_ATTR_DCBX, pid, seq, flags); |
| 1782 | |
| 1783 | return ret; |
| 1784 | } |
| 1785 | |
| 1786 | static int dcbnl_setdcbx(struct net_device *netdev, struct nlattr **tb, |
| 1787 | u32 pid, u32 seq, u16 flags) |
| 1788 | { |
Shmulik Ravid | 7f891cf | 2011-01-03 08:04:59 +0000 | [diff] [blame] | 1789 | int ret; |
Shmulik Ravid | 6241b62 | 2010-12-30 06:26:48 +0000 | [diff] [blame] | 1790 | u8 value; |
| 1791 | |
Shmulik Ravid | 7f891cf | 2011-01-03 08:04:59 +0000 | [diff] [blame] | 1792 | if (!netdev->dcbnl_ops->setdcbx) |
| 1793 | return -EOPNOTSUPP; |
| 1794 | |
| 1795 | if (!tb[DCB_ATTR_DCBX]) |
| 1796 | return -EINVAL; |
Shmulik Ravid | 6241b62 | 2010-12-30 06:26:48 +0000 | [diff] [blame] | 1797 | |
| 1798 | value = nla_get_u8(tb[DCB_ATTR_DCBX]); |
| 1799 | |
| 1800 | ret = dcbnl_reply(netdev->dcbnl_ops->setdcbx(netdev, value), |
| 1801 | RTM_SETDCB, DCB_CMD_SDCBX, DCB_ATTR_DCBX, |
| 1802 | pid, seq, flags); |
| 1803 | |
| 1804 | return ret; |
| 1805 | } |
| 1806 | |
Shmulik Ravid | ea45fe4 | 2010-12-30 06:26:55 +0000 | [diff] [blame] | 1807 | static int dcbnl_getfeatcfg(struct net_device *netdev, struct nlattr **tb, |
| 1808 | u32 pid, u32 seq, u16 flags) |
| 1809 | { |
| 1810 | struct sk_buff *dcbnl_skb; |
| 1811 | struct nlmsghdr *nlh; |
| 1812 | struct dcbmsg *dcb; |
| 1813 | struct nlattr *data[DCB_FEATCFG_ATTR_MAX + 1], *nest; |
| 1814 | u8 value; |
Shmulik Ravid | 7f891cf | 2011-01-03 08:04:59 +0000 | [diff] [blame] | 1815 | int ret, i; |
Shmulik Ravid | ea45fe4 | 2010-12-30 06:26:55 +0000 | [diff] [blame] | 1816 | int getall = 0; |
| 1817 | |
Shmulik Ravid | 7f891cf | 2011-01-03 08:04:59 +0000 | [diff] [blame] | 1818 | if (!netdev->dcbnl_ops->getfeatcfg) |
| 1819 | return -EOPNOTSUPP; |
| 1820 | |
| 1821 | if (!tb[DCB_ATTR_FEATCFG]) |
| 1822 | return -EINVAL; |
Shmulik Ravid | ea45fe4 | 2010-12-30 06:26:55 +0000 | [diff] [blame] | 1823 | |
| 1824 | ret = nla_parse_nested(data, DCB_FEATCFG_ATTR_MAX, tb[DCB_ATTR_FEATCFG], |
| 1825 | dcbnl_featcfg_nest); |
Shmulik Ravid | 7f891cf | 2011-01-03 08:04:59 +0000 | [diff] [blame] | 1826 | if (ret) |
Shmulik Ravid | ea45fe4 | 2010-12-30 06:26:55 +0000 | [diff] [blame] | 1827 | goto err_out; |
Shmulik Ravid | ea45fe4 | 2010-12-30 06:26:55 +0000 | [diff] [blame] | 1828 | |
| 1829 | dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
| 1830 | if (!dcbnl_skb) { |
Shmulik Ravid | 7f891cf | 2011-01-03 08:04:59 +0000 | [diff] [blame] | 1831 | ret = -ENOBUFS; |
Shmulik Ravid | ea45fe4 | 2010-12-30 06:26:55 +0000 | [diff] [blame] | 1832 | goto err_out; |
| 1833 | } |
| 1834 | |
| 1835 | nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags); |
| 1836 | |
| 1837 | dcb = NLMSG_DATA(nlh); |
| 1838 | dcb->dcb_family = AF_UNSPEC; |
| 1839 | dcb->cmd = DCB_CMD_GFEATCFG; |
| 1840 | |
| 1841 | nest = nla_nest_start(dcbnl_skb, DCB_ATTR_FEATCFG); |
| 1842 | if (!nest) { |
Shmulik Ravid | 7f891cf | 2011-01-03 08:04:59 +0000 | [diff] [blame] | 1843 | ret = -EMSGSIZE; |
| 1844 | goto nla_put_failure; |
Shmulik Ravid | ea45fe4 | 2010-12-30 06:26:55 +0000 | [diff] [blame] | 1845 | } |
| 1846 | |
| 1847 | if (data[DCB_FEATCFG_ATTR_ALL]) |
| 1848 | getall = 1; |
| 1849 | |
| 1850 | for (i = DCB_FEATCFG_ATTR_ALL+1; i <= DCB_FEATCFG_ATTR_MAX; i++) { |
| 1851 | if (!getall && !data[i]) |
| 1852 | continue; |
| 1853 | |
| 1854 | ret = netdev->dcbnl_ops->getfeatcfg(netdev, i, &value); |
Shmulik Ravid | 7f891cf | 2011-01-03 08:04:59 +0000 | [diff] [blame] | 1855 | if (!ret) |
Shmulik Ravid | ea45fe4 | 2010-12-30 06:26:55 +0000 | [diff] [blame] | 1856 | ret = nla_put_u8(dcbnl_skb, i, value); |
| 1857 | |
Shmulik Ravid | 7f891cf | 2011-01-03 08:04:59 +0000 | [diff] [blame] | 1858 | if (ret) { |
| 1859 | nla_nest_cancel(dcbnl_skb, nest); |
| 1860 | goto nla_put_failure; |
| 1861 | } |
Shmulik Ravid | ea45fe4 | 2010-12-30 06:26:55 +0000 | [diff] [blame] | 1862 | } |
| 1863 | nla_nest_end(dcbnl_skb, nest); |
| 1864 | |
| 1865 | nlmsg_end(dcbnl_skb, nlh); |
| 1866 | |
Shmulik Ravid | 7f891cf | 2011-01-03 08:04:59 +0000 | [diff] [blame] | 1867 | return rtnl_unicast(dcbnl_skb, &init_net, pid); |
| 1868 | nla_put_failure: |
| 1869 | nlmsg_cancel(dcbnl_skb, nlh); |
Shmulik Ravid | ea45fe4 | 2010-12-30 06:26:55 +0000 | [diff] [blame] | 1870 | nlmsg_failure: |
Shmulik Ravid | ea45fe4 | 2010-12-30 06:26:55 +0000 | [diff] [blame] | 1871 | kfree_skb(dcbnl_skb); |
| 1872 | err_out: |
| 1873 | return ret; |
| 1874 | } |
| 1875 | |
| 1876 | static int dcbnl_setfeatcfg(struct net_device *netdev, struct nlattr **tb, |
| 1877 | u32 pid, u32 seq, u16 flags) |
| 1878 | { |
| 1879 | struct nlattr *data[DCB_FEATCFG_ATTR_MAX + 1]; |
Shmulik Ravid | 7f891cf | 2011-01-03 08:04:59 +0000 | [diff] [blame] | 1880 | int ret, i; |
Shmulik Ravid | ea45fe4 | 2010-12-30 06:26:55 +0000 | [diff] [blame] | 1881 | u8 value; |
Shmulik Ravid | ea45fe4 | 2010-12-30 06:26:55 +0000 | [diff] [blame] | 1882 | |
Shmulik Ravid | 7f891cf | 2011-01-03 08:04:59 +0000 | [diff] [blame] | 1883 | if (!netdev->dcbnl_ops->setfeatcfg) |
| 1884 | return -ENOTSUPP; |
| 1885 | |
| 1886 | if (!tb[DCB_ATTR_FEATCFG]) |
| 1887 | return -EINVAL; |
Shmulik Ravid | ea45fe4 | 2010-12-30 06:26:55 +0000 | [diff] [blame] | 1888 | |
| 1889 | ret = nla_parse_nested(data, DCB_FEATCFG_ATTR_MAX, tb[DCB_ATTR_FEATCFG], |
| 1890 | dcbnl_featcfg_nest); |
| 1891 | |
Shmulik Ravid | 7f891cf | 2011-01-03 08:04:59 +0000 | [diff] [blame] | 1892 | if (ret) |
Shmulik Ravid | ea45fe4 | 2010-12-30 06:26:55 +0000 | [diff] [blame] | 1893 | goto err; |
Shmulik Ravid | ea45fe4 | 2010-12-30 06:26:55 +0000 | [diff] [blame] | 1894 | |
| 1895 | for (i = DCB_FEATCFG_ATTR_ALL+1; i <= DCB_FEATCFG_ATTR_MAX; i++) { |
| 1896 | if (data[i] == NULL) |
| 1897 | continue; |
| 1898 | |
| 1899 | value = nla_get_u8(data[i]); |
| 1900 | |
| 1901 | ret = netdev->dcbnl_ops->setfeatcfg(netdev, i, value); |
| 1902 | |
| 1903 | if (ret) |
Shmulik Ravid | 7f891cf | 2011-01-03 08:04:59 +0000 | [diff] [blame] | 1904 | goto err; |
Shmulik Ravid | ea45fe4 | 2010-12-30 06:26:55 +0000 | [diff] [blame] | 1905 | } |
Shmulik Ravid | ea45fe4 | 2010-12-30 06:26:55 +0000 | [diff] [blame] | 1906 | err: |
Shmulik Ravid | 7f891cf | 2011-01-03 08:04:59 +0000 | [diff] [blame] | 1907 | dcbnl_reply(ret, RTM_SETDCB, DCB_CMD_SFEATCFG, DCB_ATTR_FEATCFG, |
| 1908 | pid, seq, flags); |
| 1909 | |
Shmulik Ravid | ea45fe4 | 2010-12-30 06:26:55 +0000 | [diff] [blame] | 1910 | return ret; |
| 1911 | } |
| 1912 | |
Shmulik Ravid | dc6ed1d | 2011-02-27 05:04:38 +0000 | [diff] [blame] | 1913 | /* Handle CEE DCBX GET commands. */ |
| 1914 | static int dcbnl_cee_get(struct net_device *netdev, struct nlattr **tb, |
| 1915 | u32 pid, u32 seq, u16 flags) |
| 1916 | { |
Shmulik Ravid | 5b7f762 | 2011-07-05 06:16:25 +0000 | [diff] [blame] | 1917 | struct net *net = dev_net(netdev); |
Shmulik Ravid | dc6ed1d | 2011-02-27 05:04:38 +0000 | [diff] [blame] | 1918 | struct sk_buff *skb; |
| 1919 | struct nlmsghdr *nlh; |
| 1920 | struct dcbmsg *dcb; |
Shmulik Ravid | dc6ed1d | 2011-02-27 05:04:38 +0000 | [diff] [blame] | 1921 | const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops; |
Shmulik Ravid | 5b7f762 | 2011-07-05 06:16:25 +0000 | [diff] [blame] | 1922 | int err; |
Shmulik Ravid | dc6ed1d | 2011-02-27 05:04:38 +0000 | [diff] [blame] | 1923 | |
| 1924 | if (!ops) |
| 1925 | return -EOPNOTSUPP; |
| 1926 | |
| 1927 | skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
| 1928 | if (!skb) |
| 1929 | return -ENOBUFS; |
| 1930 | |
Shmulik Ravid | 5b7f762 | 2011-07-05 06:16:25 +0000 | [diff] [blame] | 1931 | nlh = nlmsg_put(skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags); |
| 1932 | if (nlh == NULL) { |
| 1933 | nlmsg_free(skb); |
| 1934 | return -EMSGSIZE; |
| 1935 | } |
Shmulik Ravid | dc6ed1d | 2011-02-27 05:04:38 +0000 | [diff] [blame] | 1936 | |
| 1937 | dcb = NLMSG_DATA(nlh); |
| 1938 | dcb->dcb_family = AF_UNSPEC; |
| 1939 | dcb->cmd = DCB_CMD_CEE_GET; |
| 1940 | |
Shmulik Ravid | 5b7f762 | 2011-07-05 06:16:25 +0000 | [diff] [blame] | 1941 | err = dcbnl_cee_fill(skb, netdev); |
Shmulik Ravid | dc6ed1d | 2011-02-27 05:04:38 +0000 | [diff] [blame] | 1942 | |
Shmulik Ravid | 5b7f762 | 2011-07-05 06:16:25 +0000 | [diff] [blame] | 1943 | if (err < 0) { |
| 1944 | nlmsg_cancel(skb, nlh); |
| 1945 | nlmsg_free(skb); |
| 1946 | } else { |
| 1947 | nlmsg_end(skb, nlh); |
| 1948 | err = rtnl_unicast(skb, net, pid); |
Shmulik Ravid | 37cf4d1 | 2011-07-05 06:16:22 +0000 | [diff] [blame] | 1949 | } |
Shmulik Ravid | 37cf4d1 | 2011-07-05 06:16:22 +0000 | [diff] [blame] | 1950 | return err; |
Shmulik Ravid | dc6ed1d | 2011-02-27 05:04:38 +0000 | [diff] [blame] | 1951 | } |
| 1952 | |
Thomas Graf | 33a03aa | 2012-06-13 02:54:54 +0000 | [diff] [blame^] | 1953 | struct reply_func { |
| 1954 | /* reply netlink message type */ |
| 1955 | int type; |
| 1956 | |
| 1957 | /* function to fill message contents */ |
| 1958 | int (*cb)(struct net_device *, struct nlmsghdr *, u32, |
| 1959 | struct nlattr **, struct sk_buff *); |
| 1960 | }; |
| 1961 | |
| 1962 | static const struct reply_func reply_funcs[DCB_CMD_MAX+1] = { |
| 1963 | /* FIXME: add reply defs */ |
| 1964 | }; |
| 1965 | |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 1966 | static int dcb_doit(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg) |
| 1967 | { |
| 1968 | struct net *net = sock_net(skb->sk); |
| 1969 | struct net_device *netdev; |
| 1970 | struct dcbmsg *dcb = (struct dcbmsg *)NLMSG_DATA(nlh); |
| 1971 | struct nlattr *tb[DCB_ATTR_MAX + 1]; |
| 1972 | u32 pid = skb ? NETLINK_CB(skb).pid : 0; |
| 1973 | int ret = -EINVAL; |
Thomas Graf | 33a03aa | 2012-06-13 02:54:54 +0000 | [diff] [blame^] | 1974 | struct sk_buff *reply_skb; |
| 1975 | struct nlmsghdr *reply_nlh; |
| 1976 | const struct reply_func *fn; |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 1977 | |
Octavian Purdila | 09ad9bc | 2009-11-25 15:14:13 -0800 | [diff] [blame] | 1978 | if (!net_eq(net, &init_net)) |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 1979 | return -EINVAL; |
| 1980 | |
| 1981 | ret = nlmsg_parse(nlh, sizeof(*dcb), tb, DCB_ATTR_MAX, |
| 1982 | dcbnl_rtnl_policy); |
| 1983 | if (ret < 0) |
| 1984 | return ret; |
| 1985 | |
Thomas Graf | 33a03aa | 2012-06-13 02:54:54 +0000 | [diff] [blame^] | 1986 | if (dcb->cmd > DCB_CMD_MAX) |
| 1987 | return -EINVAL; |
| 1988 | |
| 1989 | /* check if a reply function has been defined for the command */ |
| 1990 | fn = &reply_funcs[dcb->cmd]; |
| 1991 | if (!fn->cb) |
| 1992 | return -EOPNOTSUPP; |
| 1993 | |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 1994 | if (!tb[DCB_ATTR_IFNAME]) |
| 1995 | return -EINVAL; |
| 1996 | |
| 1997 | netdev = dev_get_by_name(&init_net, nla_data(tb[DCB_ATTR_IFNAME])); |
| 1998 | if (!netdev) |
| 1999 | return -EINVAL; |
| 2000 | |
| 2001 | if (!netdev->dcbnl_ops) |
| 2002 | goto errout; |
| 2003 | |
Thomas Graf | 33a03aa | 2012-06-13 02:54:54 +0000 | [diff] [blame^] | 2004 | reply_skb = dcbnl_newmsg(fn->type, dcb->cmd, pid, nlh->nlmsg_seq, |
| 2005 | nlh->nlmsg_flags, &reply_nlh); |
| 2006 | if (!reply_skb) { |
| 2007 | ret = -ENOBUFS; |
| 2008 | goto out; |
| 2009 | } |
| 2010 | |
| 2011 | ret = fn->cb(netdev, nlh, nlh->nlmsg_seq, tb, reply_skb); |
| 2012 | if (ret < 0) { |
| 2013 | nlmsg_free(reply_skb); |
| 2014 | goto out; |
| 2015 | } |
| 2016 | |
| 2017 | nlmsg_end(reply_skb, reply_nlh); |
| 2018 | |
| 2019 | ret = rtnl_unicast(reply_skb, &init_net, pid); |
| 2020 | if (ret) |
| 2021 | goto out; |
| 2022 | |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 2023 | switch (dcb->cmd) { |
| 2024 | case DCB_CMD_GSTATE: |
| 2025 | ret = dcbnl_getstate(netdev, tb, pid, nlh->nlmsg_seq, |
| 2026 | nlh->nlmsg_flags); |
| 2027 | goto out; |
| 2028 | case DCB_CMD_PFC_GCFG: |
| 2029 | ret = dcbnl_getpfccfg(netdev, tb, pid, nlh->nlmsg_seq, |
| 2030 | nlh->nlmsg_flags); |
| 2031 | goto out; |
| 2032 | case DCB_CMD_GPERM_HWADDR: |
| 2033 | ret = dcbnl_getperm_hwaddr(netdev, tb, pid, nlh->nlmsg_seq, |
| 2034 | nlh->nlmsg_flags); |
| 2035 | goto out; |
| 2036 | case DCB_CMD_PGTX_GCFG: |
| 2037 | ret = dcbnl_pgtx_getcfg(netdev, tb, pid, nlh->nlmsg_seq, |
| 2038 | nlh->nlmsg_flags); |
| 2039 | goto out; |
| 2040 | case DCB_CMD_PGRX_GCFG: |
| 2041 | ret = dcbnl_pgrx_getcfg(netdev, tb, pid, nlh->nlmsg_seq, |
| 2042 | nlh->nlmsg_flags); |
| 2043 | goto out; |
Alexander Duyck | 859ee3c | 2008-11-20 21:10:23 -0800 | [diff] [blame] | 2044 | case DCB_CMD_BCN_GCFG: |
| 2045 | ret = dcbnl_bcn_getcfg(netdev, tb, pid, nlh->nlmsg_seq, |
| 2046 | nlh->nlmsg_flags); |
| 2047 | goto out; |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 2048 | case DCB_CMD_SSTATE: |
| 2049 | ret = dcbnl_setstate(netdev, tb, pid, nlh->nlmsg_seq, |
| 2050 | nlh->nlmsg_flags); |
| 2051 | goto out; |
| 2052 | case DCB_CMD_PFC_SCFG: |
| 2053 | ret = dcbnl_setpfccfg(netdev, tb, pid, nlh->nlmsg_seq, |
| 2054 | nlh->nlmsg_flags); |
| 2055 | goto out; |
| 2056 | |
| 2057 | case DCB_CMD_SET_ALL: |
| 2058 | ret = dcbnl_setall(netdev, tb, pid, nlh->nlmsg_seq, |
| 2059 | nlh->nlmsg_flags); |
| 2060 | goto out; |
| 2061 | case DCB_CMD_PGTX_SCFG: |
| 2062 | ret = dcbnl_pgtx_setcfg(netdev, tb, pid, nlh->nlmsg_seq, |
| 2063 | nlh->nlmsg_flags); |
| 2064 | goto out; |
| 2065 | case DCB_CMD_PGRX_SCFG: |
| 2066 | ret = dcbnl_pgrx_setcfg(netdev, tb, pid, nlh->nlmsg_seq, |
| 2067 | nlh->nlmsg_flags); |
| 2068 | goto out; |
Alexander Duyck | 4613218 | 2008-11-20 21:05:08 -0800 | [diff] [blame] | 2069 | case DCB_CMD_GCAP: |
| 2070 | ret = dcbnl_getcap(netdev, tb, pid, nlh->nlmsg_seq, |
| 2071 | nlh->nlmsg_flags); |
| 2072 | goto out; |
Alexander Duyck | 33dbabc | 2008-11-20 21:08:19 -0800 | [diff] [blame] | 2073 | case DCB_CMD_GNUMTCS: |
| 2074 | ret = dcbnl_getnumtcs(netdev, tb, pid, nlh->nlmsg_seq, |
| 2075 | nlh->nlmsg_flags); |
| 2076 | goto out; |
| 2077 | case DCB_CMD_SNUMTCS: |
| 2078 | ret = dcbnl_setnumtcs(netdev, tb, pid, nlh->nlmsg_seq, |
| 2079 | nlh->nlmsg_flags); |
| 2080 | goto out; |
Alexander Duyck | 0eb3aa9 | 2008-11-20 21:09:23 -0800 | [diff] [blame] | 2081 | case DCB_CMD_PFC_GSTATE: |
| 2082 | ret = dcbnl_getpfcstate(netdev, tb, pid, nlh->nlmsg_seq, |
| 2083 | nlh->nlmsg_flags); |
| 2084 | goto out; |
| 2085 | case DCB_CMD_PFC_SSTATE: |
| 2086 | ret = dcbnl_setpfcstate(netdev, tb, pid, nlh->nlmsg_seq, |
| 2087 | nlh->nlmsg_flags); |
| 2088 | goto out; |
Alexander Duyck | 859ee3c | 2008-11-20 21:10:23 -0800 | [diff] [blame] | 2089 | case DCB_CMD_BCN_SCFG: |
| 2090 | ret = dcbnl_bcn_setcfg(netdev, tb, pid, nlh->nlmsg_seq, |
| 2091 | nlh->nlmsg_flags); |
| 2092 | goto out; |
Yi Zou | 5794968 | 2009-08-31 12:33:40 +0000 | [diff] [blame] | 2093 | case DCB_CMD_GAPP: |
| 2094 | ret = dcbnl_getapp(netdev, tb, pid, nlh->nlmsg_seq, |
| 2095 | nlh->nlmsg_flags); |
| 2096 | goto out; |
| 2097 | case DCB_CMD_SAPP: |
| 2098 | ret = dcbnl_setapp(netdev, tb, pid, nlh->nlmsg_seq, |
| 2099 | nlh->nlmsg_flags); |
| 2100 | goto out; |
John Fastabend | 3e29027 | 2010-12-30 09:25:46 +0000 | [diff] [blame] | 2101 | case DCB_CMD_IEEE_SET: |
| 2102 | ret = dcbnl_ieee_set(netdev, tb, pid, nlh->nlmsg_seq, |
John Fastabend | f9ae7e4 | 2011-06-21 07:34:48 +0000 | [diff] [blame] | 2103 | nlh->nlmsg_flags); |
John Fastabend | 3e29027 | 2010-12-30 09:25:46 +0000 | [diff] [blame] | 2104 | goto out; |
| 2105 | case DCB_CMD_IEEE_GET: |
| 2106 | ret = dcbnl_ieee_get(netdev, tb, pid, nlh->nlmsg_seq, |
John Fastabend | f9ae7e4 | 2011-06-21 07:34:48 +0000 | [diff] [blame] | 2107 | nlh->nlmsg_flags); |
| 2108 | goto out; |
| 2109 | case DCB_CMD_IEEE_DEL: |
| 2110 | ret = dcbnl_ieee_del(netdev, tb, pid, nlh->nlmsg_seq, |
| 2111 | nlh->nlmsg_flags); |
John Fastabend | 3e29027 | 2010-12-30 09:25:46 +0000 | [diff] [blame] | 2112 | goto out; |
Shmulik Ravid | 6241b62 | 2010-12-30 06:26:48 +0000 | [diff] [blame] | 2113 | case DCB_CMD_GDCBX: |
| 2114 | ret = dcbnl_getdcbx(netdev, tb, pid, nlh->nlmsg_seq, |
| 2115 | nlh->nlmsg_flags); |
| 2116 | goto out; |
| 2117 | case DCB_CMD_SDCBX: |
| 2118 | ret = dcbnl_setdcbx(netdev, tb, pid, nlh->nlmsg_seq, |
| 2119 | nlh->nlmsg_flags); |
| 2120 | goto out; |
Shmulik Ravid | ea45fe4 | 2010-12-30 06:26:55 +0000 | [diff] [blame] | 2121 | case DCB_CMD_GFEATCFG: |
| 2122 | ret = dcbnl_getfeatcfg(netdev, tb, pid, nlh->nlmsg_seq, |
| 2123 | nlh->nlmsg_flags); |
| 2124 | goto out; |
| 2125 | case DCB_CMD_SFEATCFG: |
| 2126 | ret = dcbnl_setfeatcfg(netdev, tb, pid, nlh->nlmsg_seq, |
| 2127 | nlh->nlmsg_flags); |
| 2128 | goto out; |
Shmulik Ravid | dc6ed1d | 2011-02-27 05:04:38 +0000 | [diff] [blame] | 2129 | case DCB_CMD_CEE_GET: |
| 2130 | ret = dcbnl_cee_get(netdev, tb, pid, nlh->nlmsg_seq, |
| 2131 | nlh->nlmsg_flags); |
| 2132 | goto out; |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 2133 | default: |
| 2134 | goto errout; |
| 2135 | } |
| 2136 | errout: |
| 2137 | ret = -EINVAL; |
| 2138 | out: |
| 2139 | dev_put(netdev); |
| 2140 | return ret; |
| 2141 | } |
| 2142 | |
John Fastabend | 9ab933a | 2010-12-30 09:26:31 +0000 | [diff] [blame] | 2143 | /** |
| 2144 | * dcb_getapp - retrieve the DCBX application user priority |
| 2145 | * |
| 2146 | * On success returns a non-zero 802.1p user priority bitmap |
| 2147 | * otherwise returns 0 as the invalid user priority bitmap to |
| 2148 | * indicate an error. |
| 2149 | */ |
| 2150 | u8 dcb_getapp(struct net_device *dev, struct dcb_app *app) |
| 2151 | { |
| 2152 | struct dcb_app_type *itr; |
| 2153 | u8 prio = 0; |
| 2154 | |
| 2155 | spin_lock(&dcb_lock); |
| 2156 | list_for_each_entry(itr, &dcb_app_list, list) { |
| 2157 | if (itr->app.selector == app->selector && |
| 2158 | itr->app.protocol == app->protocol && |
Mark Rustad | e290ed8 | 2011-10-06 08:52:33 +0000 | [diff] [blame] | 2159 | itr->ifindex == dev->ifindex) { |
John Fastabend | 9ab933a | 2010-12-30 09:26:31 +0000 | [diff] [blame] | 2160 | prio = itr->app.priority; |
| 2161 | break; |
| 2162 | } |
| 2163 | } |
| 2164 | spin_unlock(&dcb_lock); |
| 2165 | |
| 2166 | return prio; |
| 2167 | } |
| 2168 | EXPORT_SYMBOL(dcb_getapp); |
| 2169 | |
| 2170 | /** |
John Fastabend | b6db217 | 2011-06-21 07:34:42 +0000 | [diff] [blame] | 2171 | * dcb_setapp - add CEE dcb application data to app list |
John Fastabend | 9ab933a | 2010-12-30 09:26:31 +0000 | [diff] [blame] | 2172 | * |
John Fastabend | b6db217 | 2011-06-21 07:34:42 +0000 | [diff] [blame] | 2173 | * Priority 0 is an invalid priority in CEE spec. This routine |
| 2174 | * removes applications from the app list if the priority is |
| 2175 | * set to zero. |
John Fastabend | 9ab933a | 2010-12-30 09:26:31 +0000 | [diff] [blame] | 2176 | */ |
John Fastabend | ab6baf9 | 2011-06-21 07:34:58 +0000 | [diff] [blame] | 2177 | int dcb_setapp(struct net_device *dev, struct dcb_app *new) |
John Fastabend | 9ab933a | 2010-12-30 09:26:31 +0000 | [diff] [blame] | 2178 | { |
| 2179 | struct dcb_app_type *itr; |
John Fastabend | 7ec7927 | 2011-01-31 12:00:59 +0000 | [diff] [blame] | 2180 | struct dcb_app_type event; |
| 2181 | |
Mark Rustad | e290ed8 | 2011-10-06 08:52:33 +0000 | [diff] [blame] | 2182 | event.ifindex = dev->ifindex; |
John Fastabend | 7ec7927 | 2011-01-31 12:00:59 +0000 | [diff] [blame] | 2183 | memcpy(&event.app, new, sizeof(event.app)); |
John Fastabend | 6bd0e1c | 2011-10-06 08:52:38 +0000 | [diff] [blame] | 2184 | if (dev->dcbnl_ops->getdcbx) |
| 2185 | event.dcbx = dev->dcbnl_ops->getdcbx(dev); |
John Fastabend | 9ab933a | 2010-12-30 09:26:31 +0000 | [diff] [blame] | 2186 | |
| 2187 | spin_lock(&dcb_lock); |
| 2188 | /* Search for existing match and replace */ |
| 2189 | list_for_each_entry(itr, &dcb_app_list, list) { |
| 2190 | if (itr->app.selector == new->selector && |
| 2191 | itr->app.protocol == new->protocol && |
Mark Rustad | e290ed8 | 2011-10-06 08:52:33 +0000 | [diff] [blame] | 2192 | itr->ifindex == dev->ifindex) { |
John Fastabend | 9ab933a | 2010-12-30 09:26:31 +0000 | [diff] [blame] | 2193 | if (new->priority) |
| 2194 | itr->app.priority = new->priority; |
| 2195 | else { |
| 2196 | list_del(&itr->list); |
| 2197 | kfree(itr); |
| 2198 | } |
| 2199 | goto out; |
| 2200 | } |
| 2201 | } |
| 2202 | /* App type does not exist add new application type */ |
| 2203 | if (new->priority) { |
| 2204 | struct dcb_app_type *entry; |
| 2205 | entry = kmalloc(sizeof(struct dcb_app_type), GFP_ATOMIC); |
| 2206 | if (!entry) { |
| 2207 | spin_unlock(&dcb_lock); |
| 2208 | return -ENOMEM; |
| 2209 | } |
| 2210 | |
| 2211 | memcpy(&entry->app, new, sizeof(*new)); |
Mark Rustad | e290ed8 | 2011-10-06 08:52:33 +0000 | [diff] [blame] | 2212 | entry->ifindex = dev->ifindex; |
John Fastabend | 9ab933a | 2010-12-30 09:26:31 +0000 | [diff] [blame] | 2213 | list_add(&entry->list, &dcb_app_list); |
| 2214 | } |
| 2215 | out: |
| 2216 | spin_unlock(&dcb_lock); |
John Fastabend | 7ec7927 | 2011-01-31 12:00:59 +0000 | [diff] [blame] | 2217 | call_dcbevent_notifiers(DCB_APP_EVENT, &event); |
John Fastabend | 9ab933a | 2010-12-30 09:26:31 +0000 | [diff] [blame] | 2218 | return 0; |
| 2219 | } |
| 2220 | EXPORT_SYMBOL(dcb_setapp); |
| 2221 | |
John Fastabend | b6db217 | 2011-06-21 07:34:42 +0000 | [diff] [blame] | 2222 | /** |
John Fastabend | a364c8c | 2011-06-21 07:34:53 +0000 | [diff] [blame] | 2223 | * dcb_ieee_getapp_mask - retrieve the IEEE DCB application priority |
| 2224 | * |
| 2225 | * Helper routine which on success returns a non-zero 802.1Qaz user |
| 2226 | * priority bitmap otherwise returns 0 to indicate the dcb_app was |
| 2227 | * not found in APP list. |
| 2228 | */ |
| 2229 | u8 dcb_ieee_getapp_mask(struct net_device *dev, struct dcb_app *app) |
| 2230 | { |
| 2231 | struct dcb_app_type *itr; |
| 2232 | u8 prio = 0; |
| 2233 | |
| 2234 | spin_lock(&dcb_lock); |
| 2235 | list_for_each_entry(itr, &dcb_app_list, list) { |
| 2236 | if (itr->app.selector == app->selector && |
| 2237 | itr->app.protocol == app->protocol && |
Mark Rustad | e290ed8 | 2011-10-06 08:52:33 +0000 | [diff] [blame] | 2238 | itr->ifindex == dev->ifindex) { |
John Fastabend | a364c8c | 2011-06-21 07:34:53 +0000 | [diff] [blame] | 2239 | prio |= 1 << itr->app.priority; |
| 2240 | } |
| 2241 | } |
| 2242 | spin_unlock(&dcb_lock); |
| 2243 | |
| 2244 | return prio; |
| 2245 | } |
| 2246 | EXPORT_SYMBOL(dcb_ieee_getapp_mask); |
| 2247 | |
| 2248 | /** |
John Fastabend | b6db217 | 2011-06-21 07:34:42 +0000 | [diff] [blame] | 2249 | * dcb_ieee_setapp - add IEEE dcb application data to app list |
| 2250 | * |
| 2251 | * This adds Application data to the list. Multiple application |
| 2252 | * entries may exists for the same selector and protocol as long |
| 2253 | * as the priorities are different. |
| 2254 | */ |
| 2255 | int dcb_ieee_setapp(struct net_device *dev, struct dcb_app *new) |
| 2256 | { |
| 2257 | struct dcb_app_type *itr, *entry; |
| 2258 | struct dcb_app_type event; |
| 2259 | int err = 0; |
| 2260 | |
Mark Rustad | e290ed8 | 2011-10-06 08:52:33 +0000 | [diff] [blame] | 2261 | event.ifindex = dev->ifindex; |
John Fastabend | b6db217 | 2011-06-21 07:34:42 +0000 | [diff] [blame] | 2262 | memcpy(&event.app, new, sizeof(event.app)); |
John Fastabend | 6bd0e1c | 2011-10-06 08:52:38 +0000 | [diff] [blame] | 2263 | if (dev->dcbnl_ops->getdcbx) |
| 2264 | event.dcbx = dev->dcbnl_ops->getdcbx(dev); |
John Fastabend | b6db217 | 2011-06-21 07:34:42 +0000 | [diff] [blame] | 2265 | |
| 2266 | spin_lock(&dcb_lock); |
| 2267 | /* Search for existing match and abort if found */ |
| 2268 | list_for_each_entry(itr, &dcb_app_list, list) { |
| 2269 | if (itr->app.selector == new->selector && |
| 2270 | itr->app.protocol == new->protocol && |
| 2271 | itr->app.priority == new->priority && |
Mark Rustad | e290ed8 | 2011-10-06 08:52:33 +0000 | [diff] [blame] | 2272 | itr->ifindex == dev->ifindex) { |
John Fastabend | b6db217 | 2011-06-21 07:34:42 +0000 | [diff] [blame] | 2273 | err = -EEXIST; |
| 2274 | goto out; |
| 2275 | } |
| 2276 | } |
| 2277 | |
| 2278 | /* App entry does not exist add new entry */ |
| 2279 | entry = kmalloc(sizeof(struct dcb_app_type), GFP_ATOMIC); |
| 2280 | if (!entry) { |
| 2281 | err = -ENOMEM; |
| 2282 | goto out; |
| 2283 | } |
| 2284 | |
| 2285 | memcpy(&entry->app, new, sizeof(*new)); |
Mark Rustad | e290ed8 | 2011-10-06 08:52:33 +0000 | [diff] [blame] | 2286 | entry->ifindex = dev->ifindex; |
John Fastabend | b6db217 | 2011-06-21 07:34:42 +0000 | [diff] [blame] | 2287 | list_add(&entry->list, &dcb_app_list); |
| 2288 | out: |
| 2289 | spin_unlock(&dcb_lock); |
| 2290 | if (!err) |
| 2291 | call_dcbevent_notifiers(DCB_APP_EVENT, &event); |
| 2292 | return err; |
| 2293 | } |
| 2294 | EXPORT_SYMBOL(dcb_ieee_setapp); |
| 2295 | |
John Fastabend | f9ae7e4 | 2011-06-21 07:34:48 +0000 | [diff] [blame] | 2296 | /** |
| 2297 | * dcb_ieee_delapp - delete IEEE dcb application data from list |
| 2298 | * |
| 2299 | * This removes a matching APP data from the APP list |
| 2300 | */ |
| 2301 | int dcb_ieee_delapp(struct net_device *dev, struct dcb_app *del) |
| 2302 | { |
| 2303 | struct dcb_app_type *itr; |
| 2304 | struct dcb_app_type event; |
| 2305 | int err = -ENOENT; |
| 2306 | |
Mark Rustad | e290ed8 | 2011-10-06 08:52:33 +0000 | [diff] [blame] | 2307 | event.ifindex = dev->ifindex; |
John Fastabend | f9ae7e4 | 2011-06-21 07:34:48 +0000 | [diff] [blame] | 2308 | memcpy(&event.app, del, sizeof(event.app)); |
John Fastabend | 6bd0e1c | 2011-10-06 08:52:38 +0000 | [diff] [blame] | 2309 | if (dev->dcbnl_ops->getdcbx) |
| 2310 | event.dcbx = dev->dcbnl_ops->getdcbx(dev); |
John Fastabend | f9ae7e4 | 2011-06-21 07:34:48 +0000 | [diff] [blame] | 2311 | |
| 2312 | spin_lock(&dcb_lock); |
| 2313 | /* Search for existing match and remove it. */ |
| 2314 | list_for_each_entry(itr, &dcb_app_list, list) { |
| 2315 | if (itr->app.selector == del->selector && |
| 2316 | itr->app.protocol == del->protocol && |
| 2317 | itr->app.priority == del->priority && |
Mark Rustad | e290ed8 | 2011-10-06 08:52:33 +0000 | [diff] [blame] | 2318 | itr->ifindex == dev->ifindex) { |
John Fastabend | f9ae7e4 | 2011-06-21 07:34:48 +0000 | [diff] [blame] | 2319 | list_del(&itr->list); |
| 2320 | kfree(itr); |
| 2321 | err = 0; |
| 2322 | goto out; |
| 2323 | } |
| 2324 | } |
| 2325 | |
| 2326 | out: |
| 2327 | spin_unlock(&dcb_lock); |
| 2328 | if (!err) |
| 2329 | call_dcbevent_notifiers(DCB_APP_EVENT, &event); |
| 2330 | return err; |
| 2331 | } |
| 2332 | EXPORT_SYMBOL(dcb_ieee_delapp); |
| 2333 | |
Shmulik Ravid | 7c14c3f | 2010-12-30 06:27:10 +0000 | [diff] [blame] | 2334 | static void dcb_flushapp(void) |
John Fastabend | 9ab933a | 2010-12-30 09:26:31 +0000 | [diff] [blame] | 2335 | { |
| 2336 | struct dcb_app_type *app; |
Dan Carpenter | 2a8fe00 | 2011-01-04 21:03:44 +0000 | [diff] [blame] | 2337 | struct dcb_app_type *tmp; |
John Fastabend | 9ab933a | 2010-12-30 09:26:31 +0000 | [diff] [blame] | 2338 | |
| 2339 | spin_lock(&dcb_lock); |
Dan Carpenter | 2a8fe00 | 2011-01-04 21:03:44 +0000 | [diff] [blame] | 2340 | list_for_each_entry_safe(app, tmp, &dcb_app_list, list) { |
John Fastabend | 9ab933a | 2010-12-30 09:26:31 +0000 | [diff] [blame] | 2341 | list_del(&app->list); |
| 2342 | kfree(app); |
| 2343 | } |
| 2344 | spin_unlock(&dcb_lock); |
| 2345 | } |
| 2346 | |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 2347 | static int __init dcbnl_init(void) |
| 2348 | { |
John Fastabend | 9ab933a | 2010-12-30 09:26:31 +0000 | [diff] [blame] | 2349 | INIT_LIST_HEAD(&dcb_app_list); |
| 2350 | |
Greg Rose | c7ac867 | 2011-06-10 01:27:09 +0000 | [diff] [blame] | 2351 | rtnl_register(PF_UNSPEC, RTM_GETDCB, dcb_doit, NULL, NULL); |
| 2352 | rtnl_register(PF_UNSPEC, RTM_SETDCB, dcb_doit, NULL, NULL); |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 2353 | |
| 2354 | return 0; |
| 2355 | } |
| 2356 | module_init(dcbnl_init); |
| 2357 | |
| 2358 | static void __exit dcbnl_exit(void) |
| 2359 | { |
| 2360 | rtnl_unregister(PF_UNSPEC, RTM_GETDCB); |
| 2361 | rtnl_unregister(PF_UNSPEC, RTM_SETDCB); |
John Fastabend | 9ab933a | 2010-12-30 09:26:31 +0000 | [diff] [blame] | 2362 | dcb_flushapp(); |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 2363 | } |
| 2364 | module_exit(dcbnl_exit); |