Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2008, Intel Corporation. |
| 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> |
| 28 | #include <net/sock.h> |
| 29 | |
| 30 | /** |
| 31 | * Data Center Bridging (DCB) is a collection of Ethernet enhancements |
| 32 | * intended to allow network traffic with differing requirements |
| 33 | * (highly reliable, no drops vs. best effort vs. low latency) to operate |
| 34 | * and co-exist on Ethernet. Current DCB features are: |
| 35 | * |
| 36 | * Enhanced Transmission Selection (aka Priority Grouping [PG]) - provides a |
| 37 | * framework for assigning bandwidth guarantees to traffic classes. |
| 38 | * |
| 39 | * Priority-based Flow Control (PFC) - provides a flow control mechanism which |
| 40 | * can work independently for each 802.1p priority. |
| 41 | * |
| 42 | * Congestion Notification - provides a mechanism for end-to-end congestion |
| 43 | * control for protocols which do not have built-in congestion management. |
| 44 | * |
| 45 | * More information about the emerging standards for these Ethernet features |
| 46 | * can be found at: http://www.ieee802.org/1/pages/dcbridges.html |
| 47 | * |
| 48 | * This file implements an rtnetlink interface to allow configuration of DCB |
| 49 | * features for capable devices. |
| 50 | */ |
| 51 | |
| 52 | MODULE_AUTHOR("Lucy Liu, <lucy.liu@intel.com>"); |
Jeff Kirsher | 7a6b6f5 | 2008-11-25 01:02:08 -0800 | [diff] [blame] | 53 | MODULE_DESCRIPTION("Data Center Bridging netlink interface"); |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 54 | MODULE_LICENSE("GPL"); |
| 55 | |
| 56 | /**************** DCB attribute policies *************************************/ |
| 57 | |
| 58 | /* DCB netlink attributes policy */ |
Alexey Dobriyan | b54452b | 2010-02-18 08:14:31 +0000 | [diff] [blame] | 59 | static const struct nla_policy dcbnl_rtnl_policy[DCB_ATTR_MAX + 1] = { |
Alexander Duyck | 859ee3c | 2008-11-20 21:10:23 -0800 | [diff] [blame] | 60 | [DCB_ATTR_IFNAME] = {.type = NLA_NUL_STRING, .len = IFNAMSIZ - 1}, |
| 61 | [DCB_ATTR_STATE] = {.type = NLA_U8}, |
| 62 | [DCB_ATTR_PFC_CFG] = {.type = NLA_NESTED}, |
| 63 | [DCB_ATTR_PG_CFG] = {.type = NLA_NESTED}, |
| 64 | [DCB_ATTR_SET_ALL] = {.type = NLA_U8}, |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 65 | [DCB_ATTR_PERM_HWADDR] = {.type = NLA_FLAG}, |
Alexander Duyck | 859ee3c | 2008-11-20 21:10:23 -0800 | [diff] [blame] | 66 | [DCB_ATTR_CAP] = {.type = NLA_NESTED}, |
| 67 | [DCB_ATTR_PFC_STATE] = {.type = NLA_U8}, |
| 68 | [DCB_ATTR_BCN] = {.type = NLA_NESTED}, |
Yi Zou | 6fa382a | 2009-08-31 12:33:20 +0000 | [diff] [blame] | 69 | [DCB_ATTR_APP] = {.type = NLA_NESTED}, |
John Fastabend | 3e29027 | 2010-12-30 09:25:46 +0000 | [diff] [blame] | 70 | [DCB_ATTR_IEEE] = {.type = NLA_NESTED}, |
Shmulik Ravid | 6241b62 | 2010-12-30 06:26:48 +0000 | [diff] [blame] | 71 | [DCB_ATTR_DCBX] = {.type = NLA_U8}, |
Shmulik Ravid | ea45fe4 | 2010-12-30 06:26:55 +0000 | [diff] [blame] | 72 | [DCB_ATTR_FEATCFG] = {.type = NLA_NESTED}, |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 73 | }; |
| 74 | |
| 75 | /* DCB priority flow control to User Priority nested attributes */ |
Alexey Dobriyan | b54452b | 2010-02-18 08:14:31 +0000 | [diff] [blame] | 76 | 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] | 77 | [DCB_PFC_UP_ATTR_0] = {.type = NLA_U8}, |
| 78 | [DCB_PFC_UP_ATTR_1] = {.type = NLA_U8}, |
| 79 | [DCB_PFC_UP_ATTR_2] = {.type = NLA_U8}, |
| 80 | [DCB_PFC_UP_ATTR_3] = {.type = NLA_U8}, |
| 81 | [DCB_PFC_UP_ATTR_4] = {.type = NLA_U8}, |
| 82 | [DCB_PFC_UP_ATTR_5] = {.type = NLA_U8}, |
| 83 | [DCB_PFC_UP_ATTR_6] = {.type = NLA_U8}, |
| 84 | [DCB_PFC_UP_ATTR_7] = {.type = NLA_U8}, |
| 85 | [DCB_PFC_UP_ATTR_ALL] = {.type = NLA_FLAG}, |
| 86 | }; |
| 87 | |
| 88 | /* DCB priority grouping nested attributes */ |
Alexey Dobriyan | b54452b | 2010-02-18 08:14:31 +0000 | [diff] [blame] | 89 | 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] | 90 | [DCB_PG_ATTR_TC_0] = {.type = NLA_NESTED}, |
| 91 | [DCB_PG_ATTR_TC_1] = {.type = NLA_NESTED}, |
| 92 | [DCB_PG_ATTR_TC_2] = {.type = NLA_NESTED}, |
| 93 | [DCB_PG_ATTR_TC_3] = {.type = NLA_NESTED}, |
| 94 | [DCB_PG_ATTR_TC_4] = {.type = NLA_NESTED}, |
| 95 | [DCB_PG_ATTR_TC_5] = {.type = NLA_NESTED}, |
| 96 | [DCB_PG_ATTR_TC_6] = {.type = NLA_NESTED}, |
| 97 | [DCB_PG_ATTR_TC_7] = {.type = NLA_NESTED}, |
| 98 | [DCB_PG_ATTR_TC_ALL] = {.type = NLA_NESTED}, |
| 99 | [DCB_PG_ATTR_BW_ID_0] = {.type = NLA_U8}, |
| 100 | [DCB_PG_ATTR_BW_ID_1] = {.type = NLA_U8}, |
| 101 | [DCB_PG_ATTR_BW_ID_2] = {.type = NLA_U8}, |
| 102 | [DCB_PG_ATTR_BW_ID_3] = {.type = NLA_U8}, |
| 103 | [DCB_PG_ATTR_BW_ID_4] = {.type = NLA_U8}, |
| 104 | [DCB_PG_ATTR_BW_ID_5] = {.type = NLA_U8}, |
| 105 | [DCB_PG_ATTR_BW_ID_6] = {.type = NLA_U8}, |
| 106 | [DCB_PG_ATTR_BW_ID_7] = {.type = NLA_U8}, |
| 107 | [DCB_PG_ATTR_BW_ID_ALL] = {.type = NLA_FLAG}, |
| 108 | }; |
| 109 | |
| 110 | /* DCB traffic class nested attributes. */ |
Alexey Dobriyan | b54452b | 2010-02-18 08:14:31 +0000 | [diff] [blame] | 111 | 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] | 112 | [DCB_TC_ATTR_PARAM_PGID] = {.type = NLA_U8}, |
| 113 | [DCB_TC_ATTR_PARAM_UP_MAPPING] = {.type = NLA_U8}, |
| 114 | [DCB_TC_ATTR_PARAM_STRICT_PRIO] = {.type = NLA_U8}, |
| 115 | [DCB_TC_ATTR_PARAM_BW_PCT] = {.type = NLA_U8}, |
| 116 | [DCB_TC_ATTR_PARAM_ALL] = {.type = NLA_FLAG}, |
| 117 | }; |
| 118 | |
Alexander Duyck | 4613218 | 2008-11-20 21:05:08 -0800 | [diff] [blame] | 119 | /* DCB capabilities nested attributes. */ |
Alexey Dobriyan | b54452b | 2010-02-18 08:14:31 +0000 | [diff] [blame] | 120 | 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] | 121 | [DCB_CAP_ATTR_ALL] = {.type = NLA_FLAG}, |
| 122 | [DCB_CAP_ATTR_PG] = {.type = NLA_U8}, |
| 123 | [DCB_CAP_ATTR_PFC] = {.type = NLA_U8}, |
| 124 | [DCB_CAP_ATTR_UP2TC] = {.type = NLA_U8}, |
| 125 | [DCB_CAP_ATTR_PG_TCS] = {.type = NLA_U8}, |
| 126 | [DCB_CAP_ATTR_PFC_TCS] = {.type = NLA_U8}, |
| 127 | [DCB_CAP_ATTR_GSP] = {.type = NLA_U8}, |
| 128 | [DCB_CAP_ATTR_BCN] = {.type = NLA_U8}, |
Shmulik Ravid | 6241b62 | 2010-12-30 06:26:48 +0000 | [diff] [blame] | 129 | [DCB_CAP_ATTR_DCBX] = {.type = NLA_U8}, |
Alexander Duyck | 4613218 | 2008-11-20 21:05:08 -0800 | [diff] [blame] | 130 | }; |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 131 | |
Alexander Duyck | 33dbabc | 2008-11-20 21:08:19 -0800 | [diff] [blame] | 132 | /* DCB capabilities nested attributes. */ |
Alexey Dobriyan | b54452b | 2010-02-18 08:14:31 +0000 | [diff] [blame] | 133 | 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] | 134 | [DCB_NUMTCS_ATTR_ALL] = {.type = NLA_FLAG}, |
| 135 | [DCB_NUMTCS_ATTR_PG] = {.type = NLA_U8}, |
| 136 | [DCB_NUMTCS_ATTR_PFC] = {.type = NLA_U8}, |
| 137 | }; |
| 138 | |
Alexander Duyck | 859ee3c | 2008-11-20 21:10:23 -0800 | [diff] [blame] | 139 | /* DCB BCN nested attributes. */ |
Alexey Dobriyan | b54452b | 2010-02-18 08:14:31 +0000 | [diff] [blame] | 140 | 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] | 141 | [DCB_BCN_ATTR_RP_0] = {.type = NLA_U8}, |
| 142 | [DCB_BCN_ATTR_RP_1] = {.type = NLA_U8}, |
| 143 | [DCB_BCN_ATTR_RP_2] = {.type = NLA_U8}, |
| 144 | [DCB_BCN_ATTR_RP_3] = {.type = NLA_U8}, |
| 145 | [DCB_BCN_ATTR_RP_4] = {.type = NLA_U8}, |
| 146 | [DCB_BCN_ATTR_RP_5] = {.type = NLA_U8}, |
| 147 | [DCB_BCN_ATTR_RP_6] = {.type = NLA_U8}, |
| 148 | [DCB_BCN_ATTR_RP_7] = {.type = NLA_U8}, |
| 149 | [DCB_BCN_ATTR_RP_ALL] = {.type = NLA_FLAG}, |
Don Skidmore | f4314e8 | 2008-12-21 20:10:29 -0800 | [diff] [blame] | 150 | [DCB_BCN_ATTR_BCNA_0] = {.type = NLA_U32}, |
| 151 | [DCB_BCN_ATTR_BCNA_1] = {.type = NLA_U32}, |
Alexander Duyck | 859ee3c | 2008-11-20 21:10:23 -0800 | [diff] [blame] | 152 | [DCB_BCN_ATTR_ALPHA] = {.type = NLA_U32}, |
| 153 | [DCB_BCN_ATTR_BETA] = {.type = NLA_U32}, |
| 154 | [DCB_BCN_ATTR_GD] = {.type = NLA_U32}, |
| 155 | [DCB_BCN_ATTR_GI] = {.type = NLA_U32}, |
| 156 | [DCB_BCN_ATTR_TMAX] = {.type = NLA_U32}, |
| 157 | [DCB_BCN_ATTR_TD] = {.type = NLA_U32}, |
| 158 | [DCB_BCN_ATTR_RMIN] = {.type = NLA_U32}, |
| 159 | [DCB_BCN_ATTR_W] = {.type = NLA_U32}, |
| 160 | [DCB_BCN_ATTR_RD] = {.type = NLA_U32}, |
| 161 | [DCB_BCN_ATTR_RU] = {.type = NLA_U32}, |
| 162 | [DCB_BCN_ATTR_WRTT] = {.type = NLA_U32}, |
| 163 | [DCB_BCN_ATTR_RI] = {.type = NLA_U32}, |
| 164 | [DCB_BCN_ATTR_C] = {.type = NLA_U32}, |
| 165 | [DCB_BCN_ATTR_ALL] = {.type = NLA_FLAG}, |
| 166 | }; |
| 167 | |
Yi Zou | 6fa382a | 2009-08-31 12:33:20 +0000 | [diff] [blame] | 168 | /* DCB APP nested attributes. */ |
Alexey Dobriyan | b54452b | 2010-02-18 08:14:31 +0000 | [diff] [blame] | 169 | 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] | 170 | [DCB_APP_ATTR_IDTYPE] = {.type = NLA_U8}, |
| 171 | [DCB_APP_ATTR_ID] = {.type = NLA_U16}, |
| 172 | [DCB_APP_ATTR_PRIORITY] = {.type = NLA_U8}, |
| 173 | }; |
| 174 | |
John Fastabend | 3e29027 | 2010-12-30 09:25:46 +0000 | [diff] [blame] | 175 | /* IEEE 802.1Qaz nested attributes. */ |
| 176 | static const struct nla_policy dcbnl_ieee_policy[DCB_ATTR_IEEE_MAX + 1] = { |
| 177 | [DCB_ATTR_IEEE_ETS] = {.len = sizeof(struct ieee_ets)}, |
| 178 | [DCB_ATTR_IEEE_PFC] = {.len = sizeof(struct ieee_pfc)}, |
| 179 | [DCB_ATTR_IEEE_APP_TABLE] = {.type = NLA_NESTED}, |
| 180 | }; |
| 181 | |
| 182 | static const struct nla_policy dcbnl_ieee_app[DCB_ATTR_IEEE_APP_MAX + 1] = { |
| 183 | [DCB_ATTR_IEEE_APP] = {.len = sizeof(struct dcb_app)}, |
| 184 | }; |
| 185 | |
Shmulik Ravid | ea45fe4 | 2010-12-30 06:26:55 +0000 | [diff] [blame] | 186 | /* DCB number of traffic classes nested attributes. */ |
| 187 | static const struct nla_policy dcbnl_featcfg_nest[DCB_FEATCFG_ATTR_MAX + 1] = { |
| 188 | [DCB_FEATCFG_ATTR_ALL] = {.type = NLA_FLAG}, |
| 189 | [DCB_FEATCFG_ATTR_PG] = {.type = NLA_U8}, |
| 190 | [DCB_FEATCFG_ATTR_PFC] = {.type = NLA_U8}, |
| 191 | [DCB_FEATCFG_ATTR_APP] = {.type = NLA_U8}, |
| 192 | }; |
| 193 | |
John Fastabend | 9ab933a | 2010-12-30 09:26:31 +0000 | [diff] [blame] | 194 | static LIST_HEAD(dcb_app_list); |
| 195 | static DEFINE_SPINLOCK(dcb_lock); |
| 196 | |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 197 | /* standard netlink reply call */ |
| 198 | static int dcbnl_reply(u8 value, u8 event, u8 cmd, u8 attr, u32 pid, |
| 199 | u32 seq, u16 flags) |
| 200 | { |
| 201 | struct sk_buff *dcbnl_skb; |
| 202 | struct dcbmsg *dcb; |
| 203 | struct nlmsghdr *nlh; |
| 204 | int ret = -EINVAL; |
| 205 | |
| 206 | dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
| 207 | if (!dcbnl_skb) |
| 208 | return ret; |
| 209 | |
| 210 | nlh = NLMSG_NEW(dcbnl_skb, pid, seq, event, sizeof(*dcb), flags); |
| 211 | |
| 212 | dcb = NLMSG_DATA(nlh); |
| 213 | dcb->dcb_family = AF_UNSPEC; |
| 214 | dcb->cmd = cmd; |
| 215 | dcb->dcb_pad = 0; |
| 216 | |
| 217 | ret = nla_put_u8(dcbnl_skb, attr, value); |
| 218 | if (ret) |
| 219 | goto err; |
| 220 | |
| 221 | /* end the message, assign the nlmsg_len. */ |
| 222 | nlmsg_end(dcbnl_skb, nlh); |
| 223 | ret = rtnl_unicast(dcbnl_skb, &init_net, pid); |
| 224 | if (ret) |
John Fastabend | 7eaf507 | 2009-09-25 13:12:03 +0000 | [diff] [blame] | 225 | return -EINVAL; |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 226 | |
| 227 | return 0; |
| 228 | nlmsg_failure: |
| 229 | err: |
Roel Kluin | 858eb71 | 2009-01-04 17:29:21 -0800 | [diff] [blame] | 230 | kfree_skb(dcbnl_skb); |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 231 | return ret; |
| 232 | } |
| 233 | |
| 234 | static int dcbnl_getstate(struct net_device *netdev, struct nlattr **tb, |
| 235 | u32 pid, u32 seq, u16 flags) |
| 236 | { |
| 237 | int ret = -EINVAL; |
| 238 | |
| 239 | /* if (!tb[DCB_ATTR_STATE] || !netdev->dcbnl_ops->getstate) */ |
| 240 | if (!netdev->dcbnl_ops->getstate) |
| 241 | return ret; |
| 242 | |
| 243 | ret = dcbnl_reply(netdev->dcbnl_ops->getstate(netdev), RTM_GETDCB, |
| 244 | DCB_CMD_GSTATE, DCB_ATTR_STATE, pid, seq, flags); |
| 245 | |
| 246 | return ret; |
| 247 | } |
| 248 | |
| 249 | static int dcbnl_getpfccfg(struct net_device *netdev, struct nlattr **tb, |
| 250 | u32 pid, u32 seq, u16 flags) |
| 251 | { |
| 252 | struct sk_buff *dcbnl_skb; |
| 253 | struct nlmsghdr *nlh; |
| 254 | struct dcbmsg *dcb; |
| 255 | struct nlattr *data[DCB_PFC_UP_ATTR_MAX + 1], *nest; |
| 256 | u8 value; |
| 257 | int ret = -EINVAL; |
| 258 | int i; |
| 259 | int getall = 0; |
| 260 | |
| 261 | if (!tb[DCB_ATTR_PFC_CFG] || !netdev->dcbnl_ops->getpfccfg) |
| 262 | return ret; |
| 263 | |
| 264 | ret = nla_parse_nested(data, DCB_PFC_UP_ATTR_MAX, |
| 265 | tb[DCB_ATTR_PFC_CFG], |
| 266 | dcbnl_pfc_up_nest); |
| 267 | if (ret) |
| 268 | goto err_out; |
| 269 | |
| 270 | dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
| 271 | if (!dcbnl_skb) |
| 272 | goto err_out; |
| 273 | |
| 274 | nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags); |
| 275 | |
| 276 | dcb = NLMSG_DATA(nlh); |
| 277 | dcb->dcb_family = AF_UNSPEC; |
| 278 | dcb->cmd = DCB_CMD_PFC_GCFG; |
| 279 | |
| 280 | nest = nla_nest_start(dcbnl_skb, DCB_ATTR_PFC_CFG); |
| 281 | if (!nest) |
| 282 | goto err; |
| 283 | |
| 284 | if (data[DCB_PFC_UP_ATTR_ALL]) |
| 285 | getall = 1; |
| 286 | |
| 287 | for (i = DCB_PFC_UP_ATTR_0; i <= DCB_PFC_UP_ATTR_7; i++) { |
| 288 | if (!getall && !data[i]) |
| 289 | continue; |
| 290 | |
| 291 | netdev->dcbnl_ops->getpfccfg(netdev, i - DCB_PFC_UP_ATTR_0, |
| 292 | &value); |
| 293 | ret = nla_put_u8(dcbnl_skb, i, value); |
| 294 | |
| 295 | if (ret) { |
| 296 | nla_nest_cancel(dcbnl_skb, nest); |
| 297 | goto err; |
| 298 | } |
| 299 | } |
| 300 | nla_nest_end(dcbnl_skb, nest); |
| 301 | |
| 302 | nlmsg_end(dcbnl_skb, nlh); |
| 303 | |
| 304 | ret = rtnl_unicast(dcbnl_skb, &init_net, pid); |
| 305 | if (ret) |
John Fastabend | 7eaf507 | 2009-09-25 13:12:03 +0000 | [diff] [blame] | 306 | goto err_out; |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 307 | |
| 308 | return 0; |
| 309 | nlmsg_failure: |
| 310 | err: |
Roel Kluin | 858eb71 | 2009-01-04 17:29:21 -0800 | [diff] [blame] | 311 | kfree_skb(dcbnl_skb); |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 312 | err_out: |
| 313 | return -EINVAL; |
| 314 | } |
| 315 | |
| 316 | static int dcbnl_getperm_hwaddr(struct net_device *netdev, struct nlattr **tb, |
| 317 | u32 pid, u32 seq, u16 flags) |
| 318 | { |
| 319 | struct sk_buff *dcbnl_skb; |
| 320 | struct nlmsghdr *nlh; |
| 321 | struct dcbmsg *dcb; |
| 322 | u8 perm_addr[MAX_ADDR_LEN]; |
| 323 | int ret = -EINVAL; |
| 324 | |
| 325 | if (!netdev->dcbnl_ops->getpermhwaddr) |
| 326 | return ret; |
| 327 | |
| 328 | dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
| 329 | if (!dcbnl_skb) |
| 330 | goto err_out; |
| 331 | |
| 332 | nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags); |
| 333 | |
| 334 | dcb = NLMSG_DATA(nlh); |
| 335 | dcb->dcb_family = AF_UNSPEC; |
| 336 | dcb->cmd = DCB_CMD_GPERM_HWADDR; |
| 337 | |
| 338 | netdev->dcbnl_ops->getpermhwaddr(netdev, perm_addr); |
| 339 | |
| 340 | ret = nla_put(dcbnl_skb, DCB_ATTR_PERM_HWADDR, sizeof(perm_addr), |
| 341 | perm_addr); |
| 342 | |
| 343 | nlmsg_end(dcbnl_skb, nlh); |
| 344 | |
| 345 | ret = rtnl_unicast(dcbnl_skb, &init_net, pid); |
| 346 | if (ret) |
John Fastabend | 7eaf507 | 2009-09-25 13:12:03 +0000 | [diff] [blame] | 347 | goto err_out; |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 348 | |
| 349 | return 0; |
| 350 | |
| 351 | nlmsg_failure: |
Roel Kluin | 858eb71 | 2009-01-04 17:29:21 -0800 | [diff] [blame] | 352 | kfree_skb(dcbnl_skb); |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 353 | err_out: |
| 354 | return -EINVAL; |
| 355 | } |
| 356 | |
Alexander Duyck | 4613218 | 2008-11-20 21:05:08 -0800 | [diff] [blame] | 357 | static int dcbnl_getcap(struct net_device *netdev, struct nlattr **tb, |
| 358 | u32 pid, u32 seq, u16 flags) |
| 359 | { |
| 360 | struct sk_buff *dcbnl_skb; |
| 361 | struct nlmsghdr *nlh; |
| 362 | struct dcbmsg *dcb; |
| 363 | struct nlattr *data[DCB_CAP_ATTR_MAX + 1], *nest; |
| 364 | u8 value; |
| 365 | int ret = -EINVAL; |
| 366 | int i; |
| 367 | int getall = 0; |
| 368 | |
| 369 | if (!tb[DCB_ATTR_CAP] || !netdev->dcbnl_ops->getcap) |
| 370 | return ret; |
| 371 | |
| 372 | ret = nla_parse_nested(data, DCB_CAP_ATTR_MAX, tb[DCB_ATTR_CAP], |
| 373 | dcbnl_cap_nest); |
| 374 | if (ret) |
| 375 | goto err_out; |
| 376 | |
| 377 | dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
| 378 | if (!dcbnl_skb) |
| 379 | goto err_out; |
| 380 | |
| 381 | nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags); |
| 382 | |
| 383 | dcb = NLMSG_DATA(nlh); |
| 384 | dcb->dcb_family = AF_UNSPEC; |
| 385 | dcb->cmd = DCB_CMD_GCAP; |
| 386 | |
| 387 | nest = nla_nest_start(dcbnl_skb, DCB_ATTR_CAP); |
| 388 | if (!nest) |
| 389 | goto err; |
| 390 | |
| 391 | if (data[DCB_CAP_ATTR_ALL]) |
| 392 | getall = 1; |
| 393 | |
| 394 | for (i = DCB_CAP_ATTR_ALL+1; i <= DCB_CAP_ATTR_MAX; i++) { |
| 395 | if (!getall && !data[i]) |
| 396 | continue; |
| 397 | |
| 398 | if (!netdev->dcbnl_ops->getcap(netdev, i, &value)) { |
| 399 | ret = nla_put_u8(dcbnl_skb, i, value); |
| 400 | |
| 401 | if (ret) { |
| 402 | nla_nest_cancel(dcbnl_skb, nest); |
| 403 | goto err; |
| 404 | } |
| 405 | } |
| 406 | } |
| 407 | nla_nest_end(dcbnl_skb, nest); |
| 408 | |
| 409 | nlmsg_end(dcbnl_skb, nlh); |
| 410 | |
| 411 | ret = rtnl_unicast(dcbnl_skb, &init_net, pid); |
| 412 | if (ret) |
John Fastabend | 7eaf507 | 2009-09-25 13:12:03 +0000 | [diff] [blame] | 413 | goto err_out; |
Alexander Duyck | 4613218 | 2008-11-20 21:05:08 -0800 | [diff] [blame] | 414 | |
| 415 | return 0; |
| 416 | nlmsg_failure: |
| 417 | err: |
Roel Kluin | 858eb71 | 2009-01-04 17:29:21 -0800 | [diff] [blame] | 418 | kfree_skb(dcbnl_skb); |
Alexander Duyck | 4613218 | 2008-11-20 21:05:08 -0800 | [diff] [blame] | 419 | err_out: |
| 420 | return -EINVAL; |
| 421 | } |
| 422 | |
Alexander Duyck | 33dbabc | 2008-11-20 21:08:19 -0800 | [diff] [blame] | 423 | static int dcbnl_getnumtcs(struct net_device *netdev, struct nlattr **tb, |
| 424 | u32 pid, u32 seq, u16 flags) |
| 425 | { |
| 426 | struct sk_buff *dcbnl_skb; |
| 427 | struct nlmsghdr *nlh; |
| 428 | struct dcbmsg *dcb; |
| 429 | struct nlattr *data[DCB_NUMTCS_ATTR_MAX + 1], *nest; |
| 430 | u8 value; |
| 431 | int ret = -EINVAL; |
| 432 | int i; |
| 433 | int getall = 0; |
| 434 | |
| 435 | if (!tb[DCB_ATTR_NUMTCS] || !netdev->dcbnl_ops->getnumtcs) |
| 436 | return ret; |
| 437 | |
| 438 | ret = nla_parse_nested(data, DCB_NUMTCS_ATTR_MAX, tb[DCB_ATTR_NUMTCS], |
| 439 | dcbnl_numtcs_nest); |
| 440 | if (ret) { |
| 441 | ret = -EINVAL; |
| 442 | goto err_out; |
| 443 | } |
| 444 | |
| 445 | dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
| 446 | if (!dcbnl_skb) { |
| 447 | ret = -EINVAL; |
| 448 | goto err_out; |
| 449 | } |
| 450 | |
| 451 | nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags); |
| 452 | |
| 453 | dcb = NLMSG_DATA(nlh); |
| 454 | dcb->dcb_family = AF_UNSPEC; |
| 455 | dcb->cmd = DCB_CMD_GNUMTCS; |
| 456 | |
| 457 | nest = nla_nest_start(dcbnl_skb, DCB_ATTR_NUMTCS); |
| 458 | if (!nest) { |
| 459 | ret = -EINVAL; |
| 460 | goto err; |
| 461 | } |
| 462 | |
| 463 | if (data[DCB_NUMTCS_ATTR_ALL]) |
| 464 | getall = 1; |
| 465 | |
| 466 | for (i = DCB_NUMTCS_ATTR_ALL+1; i <= DCB_NUMTCS_ATTR_MAX; i++) { |
| 467 | if (!getall && !data[i]) |
| 468 | continue; |
| 469 | |
| 470 | ret = netdev->dcbnl_ops->getnumtcs(netdev, i, &value); |
| 471 | if (!ret) { |
| 472 | ret = nla_put_u8(dcbnl_skb, i, value); |
| 473 | |
| 474 | if (ret) { |
| 475 | nla_nest_cancel(dcbnl_skb, nest); |
| 476 | ret = -EINVAL; |
| 477 | goto err; |
| 478 | } |
| 479 | } else { |
| 480 | goto err; |
| 481 | } |
| 482 | } |
| 483 | nla_nest_end(dcbnl_skb, nest); |
| 484 | |
| 485 | nlmsg_end(dcbnl_skb, nlh); |
| 486 | |
| 487 | ret = rtnl_unicast(dcbnl_skb, &init_net, pid); |
| 488 | if (ret) { |
| 489 | ret = -EINVAL; |
John Fastabend | 7eaf507 | 2009-09-25 13:12:03 +0000 | [diff] [blame] | 490 | goto err_out; |
Alexander Duyck | 33dbabc | 2008-11-20 21:08:19 -0800 | [diff] [blame] | 491 | } |
| 492 | |
| 493 | return 0; |
| 494 | nlmsg_failure: |
| 495 | err: |
Roel Kluin | 858eb71 | 2009-01-04 17:29:21 -0800 | [diff] [blame] | 496 | kfree_skb(dcbnl_skb); |
Alexander Duyck | 33dbabc | 2008-11-20 21:08:19 -0800 | [diff] [blame] | 497 | err_out: |
| 498 | return ret; |
| 499 | } |
| 500 | |
| 501 | static int dcbnl_setnumtcs(struct net_device *netdev, struct nlattr **tb, |
| 502 | u32 pid, u32 seq, u16 flags) |
| 503 | { |
| 504 | struct nlattr *data[DCB_NUMTCS_ATTR_MAX + 1]; |
| 505 | int ret = -EINVAL; |
| 506 | u8 value; |
| 507 | int i; |
| 508 | |
Don Skidmore | 8b124a8 | 2008-12-15 01:06:23 -0800 | [diff] [blame] | 509 | if (!tb[DCB_ATTR_NUMTCS] || !netdev->dcbnl_ops->setnumtcs) |
Alexander Duyck | 33dbabc | 2008-11-20 21:08:19 -0800 | [diff] [blame] | 510 | return ret; |
| 511 | |
| 512 | ret = nla_parse_nested(data, DCB_NUMTCS_ATTR_MAX, tb[DCB_ATTR_NUMTCS], |
| 513 | dcbnl_numtcs_nest); |
| 514 | |
| 515 | if (ret) { |
| 516 | ret = -EINVAL; |
| 517 | goto err; |
| 518 | } |
| 519 | |
| 520 | for (i = DCB_NUMTCS_ATTR_ALL+1; i <= DCB_NUMTCS_ATTR_MAX; i++) { |
| 521 | if (data[i] == NULL) |
| 522 | continue; |
| 523 | |
| 524 | value = nla_get_u8(data[i]); |
| 525 | |
| 526 | ret = netdev->dcbnl_ops->setnumtcs(netdev, i, value); |
| 527 | |
| 528 | if (ret) |
| 529 | goto operr; |
| 530 | } |
| 531 | |
| 532 | operr: |
| 533 | ret = dcbnl_reply(!!ret, RTM_SETDCB, DCB_CMD_SNUMTCS, |
| 534 | DCB_ATTR_NUMTCS, pid, seq, flags); |
| 535 | |
| 536 | err: |
| 537 | return ret; |
| 538 | } |
| 539 | |
Alexander Duyck | 0eb3aa9 | 2008-11-20 21:09:23 -0800 | [diff] [blame] | 540 | static int dcbnl_getpfcstate(struct net_device *netdev, struct nlattr **tb, |
| 541 | u32 pid, u32 seq, u16 flags) |
| 542 | { |
| 543 | int ret = -EINVAL; |
| 544 | |
| 545 | if (!netdev->dcbnl_ops->getpfcstate) |
| 546 | return ret; |
| 547 | |
| 548 | ret = dcbnl_reply(netdev->dcbnl_ops->getpfcstate(netdev), RTM_GETDCB, |
| 549 | DCB_CMD_PFC_GSTATE, DCB_ATTR_PFC_STATE, |
| 550 | pid, seq, flags); |
| 551 | |
| 552 | return ret; |
| 553 | } |
| 554 | |
| 555 | static int dcbnl_setpfcstate(struct net_device *netdev, struct nlattr **tb, |
| 556 | u32 pid, u32 seq, u16 flags) |
| 557 | { |
| 558 | int ret = -EINVAL; |
| 559 | u8 value; |
| 560 | |
| 561 | if (!tb[DCB_ATTR_PFC_STATE] || !netdev->dcbnl_ops->setpfcstate) |
| 562 | return ret; |
| 563 | |
| 564 | value = nla_get_u8(tb[DCB_ATTR_PFC_STATE]); |
| 565 | |
| 566 | netdev->dcbnl_ops->setpfcstate(netdev, value); |
| 567 | |
| 568 | ret = dcbnl_reply(0, RTM_SETDCB, DCB_CMD_PFC_SSTATE, DCB_ATTR_PFC_STATE, |
| 569 | pid, seq, flags); |
| 570 | |
| 571 | return ret; |
| 572 | } |
| 573 | |
Yi Zou | 5794968 | 2009-08-31 12:33:40 +0000 | [diff] [blame] | 574 | static int dcbnl_getapp(struct net_device *netdev, struct nlattr **tb, |
| 575 | u32 pid, u32 seq, u16 flags) |
| 576 | { |
| 577 | struct sk_buff *dcbnl_skb; |
| 578 | struct nlmsghdr *nlh; |
| 579 | struct dcbmsg *dcb; |
| 580 | struct nlattr *app_nest; |
| 581 | struct nlattr *app_tb[DCB_APP_ATTR_MAX + 1]; |
| 582 | u16 id; |
| 583 | u8 up, idtype; |
| 584 | int ret = -EINVAL; |
| 585 | |
John Fastabend | 3dce38a | 2011-01-21 16:35:18 +0000 | [diff] [blame] | 586 | if (!tb[DCB_ATTR_APP]) |
Yi Zou | 5794968 | 2009-08-31 12:33:40 +0000 | [diff] [blame] | 587 | goto out; |
| 588 | |
| 589 | ret = nla_parse_nested(app_tb, DCB_APP_ATTR_MAX, tb[DCB_ATTR_APP], |
| 590 | dcbnl_app_nest); |
| 591 | if (ret) |
| 592 | goto out; |
| 593 | |
| 594 | ret = -EINVAL; |
| 595 | /* all must be non-null */ |
| 596 | if ((!app_tb[DCB_APP_ATTR_IDTYPE]) || |
| 597 | (!app_tb[DCB_APP_ATTR_ID])) |
| 598 | goto out; |
| 599 | |
| 600 | /* either by eth type or by socket number */ |
| 601 | idtype = nla_get_u8(app_tb[DCB_APP_ATTR_IDTYPE]); |
| 602 | if ((idtype != DCB_APP_IDTYPE_ETHTYPE) && |
| 603 | (idtype != DCB_APP_IDTYPE_PORTNUM)) |
| 604 | goto out; |
| 605 | |
| 606 | id = nla_get_u16(app_tb[DCB_APP_ATTR_ID]); |
John Fastabend | 3dce38a | 2011-01-21 16:35:18 +0000 | [diff] [blame] | 607 | |
| 608 | if (netdev->dcbnl_ops->getapp) { |
| 609 | up = netdev->dcbnl_ops->getapp(netdev, idtype, id); |
| 610 | } else { |
| 611 | struct dcb_app app = { |
| 612 | .selector = idtype, |
| 613 | .protocol = id, |
| 614 | }; |
| 615 | up = dcb_getapp(netdev, &app); |
| 616 | } |
Yi Zou | 5794968 | 2009-08-31 12:33:40 +0000 | [diff] [blame] | 617 | |
| 618 | /* send this back */ |
| 619 | dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
| 620 | if (!dcbnl_skb) |
| 621 | goto out; |
| 622 | |
| 623 | nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags); |
| 624 | dcb = NLMSG_DATA(nlh); |
| 625 | dcb->dcb_family = AF_UNSPEC; |
| 626 | dcb->cmd = DCB_CMD_GAPP; |
| 627 | |
| 628 | app_nest = nla_nest_start(dcbnl_skb, DCB_ATTR_APP); |
Jesper Juhl | d3337de | 2011-02-10 11:57:16 +0000 | [diff] [blame] | 629 | if (!app_nest) |
| 630 | goto out_cancel; |
| 631 | |
Yi Zou | 5794968 | 2009-08-31 12:33:40 +0000 | [diff] [blame] | 632 | ret = nla_put_u8(dcbnl_skb, DCB_APP_ATTR_IDTYPE, idtype); |
| 633 | if (ret) |
| 634 | goto out_cancel; |
| 635 | |
| 636 | ret = nla_put_u16(dcbnl_skb, DCB_APP_ATTR_ID, id); |
| 637 | if (ret) |
| 638 | goto out_cancel; |
| 639 | |
| 640 | ret = nla_put_u8(dcbnl_skb, DCB_APP_ATTR_PRIORITY, up); |
| 641 | if (ret) |
| 642 | goto out_cancel; |
| 643 | |
| 644 | nla_nest_end(dcbnl_skb, app_nest); |
| 645 | nlmsg_end(dcbnl_skb, nlh); |
| 646 | |
| 647 | ret = rtnl_unicast(dcbnl_skb, &init_net, pid); |
| 648 | if (ret) |
| 649 | goto nlmsg_failure; |
| 650 | |
| 651 | goto out; |
| 652 | |
| 653 | out_cancel: |
| 654 | nla_nest_cancel(dcbnl_skb, app_nest); |
| 655 | nlmsg_failure: |
| 656 | kfree_skb(dcbnl_skb); |
| 657 | out: |
| 658 | return ret; |
| 659 | } |
| 660 | |
| 661 | static int dcbnl_setapp(struct net_device *netdev, struct nlattr **tb, |
| 662 | u32 pid, u32 seq, u16 flags) |
| 663 | { |
John Fastabend | 9ab933a | 2010-12-30 09:26:31 +0000 | [diff] [blame] | 664 | int err, ret = -EINVAL; |
Yi Zou | 5794968 | 2009-08-31 12:33:40 +0000 | [diff] [blame] | 665 | u16 id; |
| 666 | u8 up, idtype; |
| 667 | struct nlattr *app_tb[DCB_APP_ATTR_MAX + 1]; |
| 668 | |
John Fastabend | 9ab933a | 2010-12-30 09:26:31 +0000 | [diff] [blame] | 669 | if (!tb[DCB_ATTR_APP]) |
Yi Zou | 5794968 | 2009-08-31 12:33:40 +0000 | [diff] [blame] | 670 | goto out; |
| 671 | |
| 672 | ret = nla_parse_nested(app_tb, DCB_APP_ATTR_MAX, tb[DCB_ATTR_APP], |
| 673 | dcbnl_app_nest); |
| 674 | if (ret) |
| 675 | goto out; |
| 676 | |
| 677 | ret = -EINVAL; |
| 678 | /* all must be non-null */ |
| 679 | if ((!app_tb[DCB_APP_ATTR_IDTYPE]) || |
| 680 | (!app_tb[DCB_APP_ATTR_ID]) || |
| 681 | (!app_tb[DCB_APP_ATTR_PRIORITY])) |
| 682 | goto out; |
| 683 | |
| 684 | /* either by eth type or by socket number */ |
| 685 | idtype = nla_get_u8(app_tb[DCB_APP_ATTR_IDTYPE]); |
| 686 | if ((idtype != DCB_APP_IDTYPE_ETHTYPE) && |
| 687 | (idtype != DCB_APP_IDTYPE_PORTNUM)) |
| 688 | goto out; |
| 689 | |
| 690 | id = nla_get_u16(app_tb[DCB_APP_ATTR_ID]); |
| 691 | up = nla_get_u8(app_tb[DCB_APP_ATTR_PRIORITY]); |
| 692 | |
John Fastabend | 9ab933a | 2010-12-30 09:26:31 +0000 | [diff] [blame] | 693 | if (netdev->dcbnl_ops->setapp) { |
| 694 | err = netdev->dcbnl_ops->setapp(netdev, idtype, id, up); |
| 695 | } else { |
| 696 | struct dcb_app app; |
| 697 | app.selector = idtype; |
| 698 | app.protocol = id; |
| 699 | app.priority = up; |
| 700 | err = dcb_setapp(netdev, &app); |
| 701 | } |
| 702 | |
| 703 | ret = dcbnl_reply(err, RTM_SETDCB, DCB_CMD_SAPP, DCB_ATTR_APP, |
| 704 | pid, seq, flags); |
Yi Zou | 5794968 | 2009-08-31 12:33:40 +0000 | [diff] [blame] | 705 | out: |
| 706 | return ret; |
| 707 | } |
| 708 | |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 709 | static int __dcbnl_pg_getcfg(struct net_device *netdev, struct nlattr **tb, |
| 710 | u32 pid, u32 seq, u16 flags, int dir) |
| 711 | { |
| 712 | struct sk_buff *dcbnl_skb; |
| 713 | struct nlmsghdr *nlh; |
| 714 | struct dcbmsg *dcb; |
| 715 | struct nlattr *pg_nest, *param_nest, *data; |
| 716 | struct nlattr *pg_tb[DCB_PG_ATTR_MAX + 1]; |
| 717 | struct nlattr *param_tb[DCB_TC_ATTR_PARAM_MAX + 1]; |
| 718 | u8 prio, pgid, tc_pct, up_map; |
| 719 | int ret = -EINVAL; |
| 720 | int getall = 0; |
| 721 | int i; |
| 722 | |
| 723 | if (!tb[DCB_ATTR_PG_CFG] || |
| 724 | !netdev->dcbnl_ops->getpgtccfgtx || |
| 725 | !netdev->dcbnl_ops->getpgtccfgrx || |
| 726 | !netdev->dcbnl_ops->getpgbwgcfgtx || |
| 727 | !netdev->dcbnl_ops->getpgbwgcfgrx) |
| 728 | return ret; |
| 729 | |
| 730 | ret = nla_parse_nested(pg_tb, DCB_PG_ATTR_MAX, |
| 731 | tb[DCB_ATTR_PG_CFG], dcbnl_pg_nest); |
| 732 | |
| 733 | if (ret) |
| 734 | goto err_out; |
| 735 | |
| 736 | dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
| 737 | if (!dcbnl_skb) |
| 738 | goto err_out; |
| 739 | |
| 740 | nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags); |
| 741 | |
| 742 | dcb = NLMSG_DATA(nlh); |
| 743 | dcb->dcb_family = AF_UNSPEC; |
| 744 | dcb->cmd = (dir) ? DCB_CMD_PGRX_GCFG : DCB_CMD_PGTX_GCFG; |
| 745 | |
| 746 | pg_nest = nla_nest_start(dcbnl_skb, DCB_ATTR_PG_CFG); |
| 747 | if (!pg_nest) |
| 748 | goto err; |
| 749 | |
| 750 | if (pg_tb[DCB_PG_ATTR_TC_ALL]) |
| 751 | getall = 1; |
| 752 | |
| 753 | for (i = DCB_PG_ATTR_TC_0; i <= DCB_PG_ATTR_TC_7; i++) { |
| 754 | if (!getall && !pg_tb[i]) |
| 755 | continue; |
| 756 | |
| 757 | if (pg_tb[DCB_PG_ATTR_TC_ALL]) |
| 758 | data = pg_tb[DCB_PG_ATTR_TC_ALL]; |
| 759 | else |
| 760 | data = pg_tb[i]; |
| 761 | ret = nla_parse_nested(param_tb, DCB_TC_ATTR_PARAM_MAX, |
| 762 | data, dcbnl_tc_param_nest); |
| 763 | if (ret) |
| 764 | goto err_pg; |
| 765 | |
| 766 | param_nest = nla_nest_start(dcbnl_skb, i); |
| 767 | if (!param_nest) |
| 768 | goto err_pg; |
| 769 | |
| 770 | pgid = DCB_ATTR_VALUE_UNDEFINED; |
| 771 | prio = DCB_ATTR_VALUE_UNDEFINED; |
| 772 | tc_pct = DCB_ATTR_VALUE_UNDEFINED; |
| 773 | up_map = DCB_ATTR_VALUE_UNDEFINED; |
| 774 | |
| 775 | if (dir) { |
| 776 | /* Rx */ |
| 777 | netdev->dcbnl_ops->getpgtccfgrx(netdev, |
| 778 | i - DCB_PG_ATTR_TC_0, &prio, |
| 779 | &pgid, &tc_pct, &up_map); |
| 780 | } else { |
| 781 | /* Tx */ |
| 782 | netdev->dcbnl_ops->getpgtccfgtx(netdev, |
| 783 | i - DCB_PG_ATTR_TC_0, &prio, |
| 784 | &pgid, &tc_pct, &up_map); |
| 785 | } |
| 786 | |
| 787 | if (param_tb[DCB_TC_ATTR_PARAM_PGID] || |
| 788 | param_tb[DCB_TC_ATTR_PARAM_ALL]) { |
| 789 | ret = nla_put_u8(dcbnl_skb, |
| 790 | DCB_TC_ATTR_PARAM_PGID, pgid); |
| 791 | if (ret) |
| 792 | goto err_param; |
| 793 | } |
| 794 | if (param_tb[DCB_TC_ATTR_PARAM_UP_MAPPING] || |
| 795 | param_tb[DCB_TC_ATTR_PARAM_ALL]) { |
| 796 | ret = nla_put_u8(dcbnl_skb, |
| 797 | DCB_TC_ATTR_PARAM_UP_MAPPING, up_map); |
| 798 | if (ret) |
| 799 | goto err_param; |
| 800 | } |
| 801 | if (param_tb[DCB_TC_ATTR_PARAM_STRICT_PRIO] || |
| 802 | param_tb[DCB_TC_ATTR_PARAM_ALL]) { |
| 803 | ret = nla_put_u8(dcbnl_skb, |
| 804 | DCB_TC_ATTR_PARAM_STRICT_PRIO, prio); |
| 805 | if (ret) |
| 806 | goto err_param; |
| 807 | } |
| 808 | if (param_tb[DCB_TC_ATTR_PARAM_BW_PCT] || |
| 809 | param_tb[DCB_TC_ATTR_PARAM_ALL]) { |
| 810 | ret = nla_put_u8(dcbnl_skb, DCB_TC_ATTR_PARAM_BW_PCT, |
| 811 | tc_pct); |
| 812 | if (ret) |
| 813 | goto err_param; |
| 814 | } |
| 815 | nla_nest_end(dcbnl_skb, param_nest); |
| 816 | } |
| 817 | |
| 818 | if (pg_tb[DCB_PG_ATTR_BW_ID_ALL]) |
| 819 | getall = 1; |
| 820 | else |
| 821 | getall = 0; |
| 822 | |
| 823 | for (i = DCB_PG_ATTR_BW_ID_0; i <= DCB_PG_ATTR_BW_ID_7; i++) { |
| 824 | if (!getall && !pg_tb[i]) |
| 825 | continue; |
| 826 | |
| 827 | tc_pct = DCB_ATTR_VALUE_UNDEFINED; |
| 828 | |
| 829 | if (dir) { |
| 830 | /* Rx */ |
| 831 | netdev->dcbnl_ops->getpgbwgcfgrx(netdev, |
| 832 | i - DCB_PG_ATTR_BW_ID_0, &tc_pct); |
| 833 | } else { |
| 834 | /* Tx */ |
| 835 | netdev->dcbnl_ops->getpgbwgcfgtx(netdev, |
| 836 | i - DCB_PG_ATTR_BW_ID_0, &tc_pct); |
| 837 | } |
| 838 | ret = nla_put_u8(dcbnl_skb, i, tc_pct); |
| 839 | |
| 840 | if (ret) |
| 841 | goto err_pg; |
| 842 | } |
| 843 | |
| 844 | nla_nest_end(dcbnl_skb, pg_nest); |
| 845 | |
| 846 | nlmsg_end(dcbnl_skb, nlh); |
| 847 | |
| 848 | ret = rtnl_unicast(dcbnl_skb, &init_net, pid); |
| 849 | if (ret) |
John Fastabend | 7eaf507 | 2009-09-25 13:12:03 +0000 | [diff] [blame] | 850 | goto err_out; |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 851 | |
| 852 | return 0; |
| 853 | |
| 854 | err_param: |
| 855 | nla_nest_cancel(dcbnl_skb, param_nest); |
| 856 | err_pg: |
| 857 | nla_nest_cancel(dcbnl_skb, pg_nest); |
| 858 | nlmsg_failure: |
| 859 | err: |
Roel Kluin | 858eb71 | 2009-01-04 17:29:21 -0800 | [diff] [blame] | 860 | kfree_skb(dcbnl_skb); |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 861 | err_out: |
| 862 | ret = -EINVAL; |
| 863 | return ret; |
| 864 | } |
| 865 | |
| 866 | static int dcbnl_pgtx_getcfg(struct net_device *netdev, struct nlattr **tb, |
| 867 | u32 pid, u32 seq, u16 flags) |
| 868 | { |
| 869 | return __dcbnl_pg_getcfg(netdev, tb, pid, seq, flags, 0); |
| 870 | } |
| 871 | |
| 872 | static int dcbnl_pgrx_getcfg(struct net_device *netdev, struct nlattr **tb, |
| 873 | u32 pid, u32 seq, u16 flags) |
| 874 | { |
| 875 | return __dcbnl_pg_getcfg(netdev, tb, pid, seq, flags, 1); |
| 876 | } |
| 877 | |
| 878 | static int dcbnl_setstate(struct net_device *netdev, struct nlattr **tb, |
| 879 | u32 pid, u32 seq, u16 flags) |
| 880 | { |
| 881 | int ret = -EINVAL; |
| 882 | u8 value; |
| 883 | |
| 884 | if (!tb[DCB_ATTR_STATE] || !netdev->dcbnl_ops->setstate) |
| 885 | return ret; |
| 886 | |
| 887 | value = nla_get_u8(tb[DCB_ATTR_STATE]); |
| 888 | |
Don Skidmore | 1486a61 | 2008-12-21 20:09:50 -0800 | [diff] [blame] | 889 | ret = dcbnl_reply(netdev->dcbnl_ops->setstate(netdev, value), |
| 890 | RTM_SETDCB, DCB_CMD_SSTATE, DCB_ATTR_STATE, |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 891 | pid, seq, flags); |
| 892 | |
| 893 | return ret; |
| 894 | } |
| 895 | |
| 896 | static int dcbnl_setpfccfg(struct net_device *netdev, struct nlattr **tb, |
| 897 | u32 pid, u32 seq, u16 flags) |
| 898 | { |
| 899 | struct nlattr *data[DCB_PFC_UP_ATTR_MAX + 1]; |
| 900 | int i; |
| 901 | int ret = -EINVAL; |
| 902 | u8 value; |
| 903 | |
| 904 | if (!tb[DCB_ATTR_PFC_CFG] || !netdev->dcbnl_ops->setpfccfg) |
| 905 | return ret; |
| 906 | |
| 907 | ret = nla_parse_nested(data, DCB_PFC_UP_ATTR_MAX, |
| 908 | tb[DCB_ATTR_PFC_CFG], |
| 909 | dcbnl_pfc_up_nest); |
| 910 | if (ret) |
| 911 | goto err; |
| 912 | |
| 913 | for (i = DCB_PFC_UP_ATTR_0; i <= DCB_PFC_UP_ATTR_7; i++) { |
| 914 | if (data[i] == NULL) |
| 915 | continue; |
| 916 | value = nla_get_u8(data[i]); |
| 917 | netdev->dcbnl_ops->setpfccfg(netdev, |
| 918 | data[i]->nla_type - DCB_PFC_UP_ATTR_0, value); |
| 919 | } |
| 920 | |
| 921 | ret = dcbnl_reply(0, RTM_SETDCB, DCB_CMD_PFC_SCFG, DCB_ATTR_PFC_CFG, |
| 922 | pid, seq, flags); |
| 923 | err: |
| 924 | return ret; |
| 925 | } |
| 926 | |
| 927 | static int dcbnl_setall(struct net_device *netdev, struct nlattr **tb, |
| 928 | u32 pid, u32 seq, u16 flags) |
| 929 | { |
| 930 | int ret = -EINVAL; |
| 931 | |
| 932 | if (!tb[DCB_ATTR_SET_ALL] || !netdev->dcbnl_ops->setall) |
| 933 | return ret; |
| 934 | |
| 935 | ret = dcbnl_reply(netdev->dcbnl_ops->setall(netdev), RTM_SETDCB, |
| 936 | DCB_CMD_SET_ALL, DCB_ATTR_SET_ALL, pid, seq, flags); |
| 937 | |
| 938 | return ret; |
| 939 | } |
| 940 | |
| 941 | static int __dcbnl_pg_setcfg(struct net_device *netdev, struct nlattr **tb, |
| 942 | u32 pid, u32 seq, u16 flags, int dir) |
| 943 | { |
| 944 | struct nlattr *pg_tb[DCB_PG_ATTR_MAX + 1]; |
| 945 | struct nlattr *param_tb[DCB_TC_ATTR_PARAM_MAX + 1]; |
| 946 | int ret = -EINVAL; |
| 947 | int i; |
| 948 | u8 pgid; |
| 949 | u8 up_map; |
| 950 | u8 prio; |
| 951 | u8 tc_pct; |
| 952 | |
| 953 | if (!tb[DCB_ATTR_PG_CFG] || |
| 954 | !netdev->dcbnl_ops->setpgtccfgtx || |
| 955 | !netdev->dcbnl_ops->setpgtccfgrx || |
| 956 | !netdev->dcbnl_ops->setpgbwgcfgtx || |
| 957 | !netdev->dcbnl_ops->setpgbwgcfgrx) |
| 958 | return ret; |
| 959 | |
| 960 | ret = nla_parse_nested(pg_tb, DCB_PG_ATTR_MAX, |
| 961 | tb[DCB_ATTR_PG_CFG], dcbnl_pg_nest); |
| 962 | if (ret) |
| 963 | goto err; |
| 964 | |
| 965 | for (i = DCB_PG_ATTR_TC_0; i <= DCB_PG_ATTR_TC_7; i++) { |
| 966 | if (!pg_tb[i]) |
| 967 | continue; |
| 968 | |
| 969 | ret = nla_parse_nested(param_tb, DCB_TC_ATTR_PARAM_MAX, |
| 970 | pg_tb[i], dcbnl_tc_param_nest); |
| 971 | if (ret) |
| 972 | goto err; |
| 973 | |
| 974 | pgid = DCB_ATTR_VALUE_UNDEFINED; |
| 975 | prio = DCB_ATTR_VALUE_UNDEFINED; |
| 976 | tc_pct = DCB_ATTR_VALUE_UNDEFINED; |
| 977 | up_map = DCB_ATTR_VALUE_UNDEFINED; |
| 978 | |
| 979 | if (param_tb[DCB_TC_ATTR_PARAM_STRICT_PRIO]) |
| 980 | prio = |
| 981 | nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_STRICT_PRIO]); |
| 982 | |
| 983 | if (param_tb[DCB_TC_ATTR_PARAM_PGID]) |
| 984 | pgid = nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_PGID]); |
| 985 | |
| 986 | if (param_tb[DCB_TC_ATTR_PARAM_BW_PCT]) |
| 987 | tc_pct = nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_BW_PCT]); |
| 988 | |
| 989 | if (param_tb[DCB_TC_ATTR_PARAM_UP_MAPPING]) |
| 990 | up_map = |
| 991 | nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_UP_MAPPING]); |
| 992 | |
| 993 | /* dir: Tx = 0, Rx = 1 */ |
| 994 | if (dir) { |
| 995 | /* Rx */ |
| 996 | netdev->dcbnl_ops->setpgtccfgrx(netdev, |
| 997 | i - DCB_PG_ATTR_TC_0, |
| 998 | prio, pgid, tc_pct, up_map); |
| 999 | } else { |
| 1000 | /* Tx */ |
| 1001 | netdev->dcbnl_ops->setpgtccfgtx(netdev, |
| 1002 | i - DCB_PG_ATTR_TC_0, |
| 1003 | prio, pgid, tc_pct, up_map); |
| 1004 | } |
| 1005 | } |
| 1006 | |
| 1007 | for (i = DCB_PG_ATTR_BW_ID_0; i <= DCB_PG_ATTR_BW_ID_7; i++) { |
| 1008 | if (!pg_tb[i]) |
| 1009 | continue; |
| 1010 | |
| 1011 | tc_pct = nla_get_u8(pg_tb[i]); |
| 1012 | |
| 1013 | /* dir: Tx = 0, Rx = 1 */ |
| 1014 | if (dir) { |
| 1015 | /* Rx */ |
| 1016 | netdev->dcbnl_ops->setpgbwgcfgrx(netdev, |
| 1017 | i - DCB_PG_ATTR_BW_ID_0, tc_pct); |
| 1018 | } else { |
| 1019 | /* Tx */ |
| 1020 | netdev->dcbnl_ops->setpgbwgcfgtx(netdev, |
| 1021 | i - DCB_PG_ATTR_BW_ID_0, tc_pct); |
| 1022 | } |
| 1023 | } |
| 1024 | |
| 1025 | ret = dcbnl_reply(0, RTM_SETDCB, |
| 1026 | (dir ? DCB_CMD_PGRX_SCFG : DCB_CMD_PGTX_SCFG), |
| 1027 | DCB_ATTR_PG_CFG, pid, seq, flags); |
| 1028 | |
| 1029 | err: |
| 1030 | return ret; |
| 1031 | } |
| 1032 | |
| 1033 | static int dcbnl_pgtx_setcfg(struct net_device *netdev, struct nlattr **tb, |
| 1034 | u32 pid, u32 seq, u16 flags) |
| 1035 | { |
| 1036 | return __dcbnl_pg_setcfg(netdev, tb, pid, seq, flags, 0); |
| 1037 | } |
| 1038 | |
| 1039 | static int dcbnl_pgrx_setcfg(struct net_device *netdev, struct nlattr **tb, |
| 1040 | u32 pid, u32 seq, u16 flags) |
| 1041 | { |
| 1042 | return __dcbnl_pg_setcfg(netdev, tb, pid, seq, flags, 1); |
| 1043 | } |
| 1044 | |
Alexander Duyck | 859ee3c | 2008-11-20 21:10:23 -0800 | [diff] [blame] | 1045 | static int dcbnl_bcn_getcfg(struct net_device *netdev, struct nlattr **tb, |
| 1046 | u32 pid, u32 seq, u16 flags) |
| 1047 | { |
| 1048 | struct sk_buff *dcbnl_skb; |
| 1049 | struct nlmsghdr *nlh; |
| 1050 | struct dcbmsg *dcb; |
| 1051 | struct nlattr *bcn_nest; |
| 1052 | struct nlattr *bcn_tb[DCB_BCN_ATTR_MAX + 1]; |
| 1053 | u8 value_byte; |
| 1054 | u32 value_integer; |
| 1055 | int ret = -EINVAL; |
| 1056 | bool getall = false; |
| 1057 | int i; |
| 1058 | |
| 1059 | if (!tb[DCB_ATTR_BCN] || !netdev->dcbnl_ops->getbcnrp || |
| 1060 | !netdev->dcbnl_ops->getbcncfg) |
| 1061 | return ret; |
| 1062 | |
| 1063 | ret = nla_parse_nested(bcn_tb, DCB_BCN_ATTR_MAX, |
| 1064 | tb[DCB_ATTR_BCN], dcbnl_bcn_nest); |
| 1065 | |
| 1066 | if (ret) |
| 1067 | goto err_out; |
| 1068 | |
| 1069 | dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
| 1070 | if (!dcbnl_skb) |
| 1071 | goto err_out; |
| 1072 | |
| 1073 | nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags); |
| 1074 | |
| 1075 | dcb = NLMSG_DATA(nlh); |
| 1076 | dcb->dcb_family = AF_UNSPEC; |
| 1077 | dcb->cmd = DCB_CMD_BCN_GCFG; |
| 1078 | |
| 1079 | bcn_nest = nla_nest_start(dcbnl_skb, DCB_ATTR_BCN); |
| 1080 | if (!bcn_nest) |
| 1081 | goto err; |
| 1082 | |
| 1083 | if (bcn_tb[DCB_BCN_ATTR_ALL]) |
| 1084 | getall = true; |
| 1085 | |
| 1086 | for (i = DCB_BCN_ATTR_RP_0; i <= DCB_BCN_ATTR_RP_7; i++) { |
| 1087 | if (!getall && !bcn_tb[i]) |
| 1088 | continue; |
| 1089 | |
| 1090 | netdev->dcbnl_ops->getbcnrp(netdev, i - DCB_BCN_ATTR_RP_0, |
| 1091 | &value_byte); |
| 1092 | ret = nla_put_u8(dcbnl_skb, i, value_byte); |
| 1093 | if (ret) |
| 1094 | goto err_bcn; |
| 1095 | } |
| 1096 | |
Don Skidmore | f4314e8 | 2008-12-21 20:10:29 -0800 | [diff] [blame] | 1097 | 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] | 1098 | if (!getall && !bcn_tb[i]) |
| 1099 | continue; |
| 1100 | |
| 1101 | netdev->dcbnl_ops->getbcncfg(netdev, i, |
| 1102 | &value_integer); |
| 1103 | ret = nla_put_u32(dcbnl_skb, i, value_integer); |
| 1104 | if (ret) |
| 1105 | goto err_bcn; |
| 1106 | } |
| 1107 | |
| 1108 | nla_nest_end(dcbnl_skb, bcn_nest); |
| 1109 | |
| 1110 | nlmsg_end(dcbnl_skb, nlh); |
| 1111 | |
| 1112 | ret = rtnl_unicast(dcbnl_skb, &init_net, pid); |
| 1113 | if (ret) |
John Fastabend | 7eaf507 | 2009-09-25 13:12:03 +0000 | [diff] [blame] | 1114 | goto err_out; |
Alexander Duyck | 859ee3c | 2008-11-20 21:10:23 -0800 | [diff] [blame] | 1115 | |
| 1116 | return 0; |
| 1117 | |
| 1118 | err_bcn: |
| 1119 | nla_nest_cancel(dcbnl_skb, bcn_nest); |
| 1120 | nlmsg_failure: |
| 1121 | err: |
Roel Kluin | 858eb71 | 2009-01-04 17:29:21 -0800 | [diff] [blame] | 1122 | kfree_skb(dcbnl_skb); |
Alexander Duyck | 859ee3c | 2008-11-20 21:10:23 -0800 | [diff] [blame] | 1123 | err_out: |
| 1124 | ret = -EINVAL; |
| 1125 | return ret; |
| 1126 | } |
| 1127 | |
| 1128 | static int dcbnl_bcn_setcfg(struct net_device *netdev, struct nlattr **tb, |
| 1129 | u32 pid, u32 seq, u16 flags) |
| 1130 | { |
| 1131 | struct nlattr *data[DCB_BCN_ATTR_MAX + 1]; |
| 1132 | int i; |
| 1133 | int ret = -EINVAL; |
| 1134 | u8 value_byte; |
| 1135 | u32 value_int; |
| 1136 | |
Joe Perches | f64f9e7 | 2009-11-29 16:55:45 -0800 | [diff] [blame] | 1137 | if (!tb[DCB_ATTR_BCN] || !netdev->dcbnl_ops->setbcncfg || |
| 1138 | !netdev->dcbnl_ops->setbcnrp) |
Alexander Duyck | 859ee3c | 2008-11-20 21:10:23 -0800 | [diff] [blame] | 1139 | return ret; |
| 1140 | |
| 1141 | ret = nla_parse_nested(data, DCB_BCN_ATTR_MAX, |
| 1142 | tb[DCB_ATTR_BCN], |
| 1143 | dcbnl_pfc_up_nest); |
| 1144 | if (ret) |
| 1145 | goto err; |
| 1146 | |
| 1147 | for (i = DCB_BCN_ATTR_RP_0; i <= DCB_BCN_ATTR_RP_7; i++) { |
| 1148 | if (data[i] == NULL) |
| 1149 | continue; |
| 1150 | value_byte = nla_get_u8(data[i]); |
| 1151 | netdev->dcbnl_ops->setbcnrp(netdev, |
| 1152 | data[i]->nla_type - DCB_BCN_ATTR_RP_0, value_byte); |
| 1153 | } |
| 1154 | |
Don Skidmore | f4314e8 | 2008-12-21 20:10:29 -0800 | [diff] [blame] | 1155 | 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] | 1156 | if (data[i] == NULL) |
| 1157 | continue; |
| 1158 | value_int = nla_get_u32(data[i]); |
| 1159 | netdev->dcbnl_ops->setbcncfg(netdev, |
| 1160 | i, value_int); |
| 1161 | } |
| 1162 | |
| 1163 | ret = dcbnl_reply(0, RTM_SETDCB, DCB_CMD_BCN_SCFG, DCB_ATTR_BCN, |
| 1164 | pid, seq, flags); |
| 1165 | err: |
| 1166 | return ret; |
| 1167 | } |
| 1168 | |
John Fastabend | 3e29027 | 2010-12-30 09:25:46 +0000 | [diff] [blame] | 1169 | /* Handle IEEE 802.1Qaz SET commands. If any requested operation can not |
| 1170 | * be completed the entire msg is aborted and error value is returned. |
| 1171 | * No attempt is made to reconcile the case where only part of the |
| 1172 | * cmd can be completed. |
| 1173 | */ |
| 1174 | static int dcbnl_ieee_set(struct net_device *netdev, struct nlattr **tb, |
| 1175 | u32 pid, u32 seq, u16 flags) |
| 1176 | { |
| 1177 | const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops; |
| 1178 | struct nlattr *ieee[DCB_ATTR_IEEE_MAX + 1]; |
| 1179 | int err = -EOPNOTSUPP; |
| 1180 | |
| 1181 | if (!ops) |
| 1182 | goto err; |
| 1183 | |
| 1184 | err = nla_parse_nested(ieee, DCB_ATTR_IEEE_MAX, |
| 1185 | tb[DCB_ATTR_IEEE], dcbnl_ieee_policy); |
| 1186 | if (err) |
| 1187 | goto err; |
| 1188 | |
| 1189 | if (ieee[DCB_ATTR_IEEE_ETS] && ops->ieee_setets) { |
| 1190 | struct ieee_ets *ets = nla_data(ieee[DCB_ATTR_IEEE_ETS]); |
| 1191 | err = ops->ieee_setets(netdev, ets); |
| 1192 | if (err) |
| 1193 | goto err; |
| 1194 | } |
| 1195 | |
John Fastabend | f3d7bc5 | 2011-03-02 10:35:33 +0000 | [diff] [blame^] | 1196 | if (ieee[DCB_ATTR_IEEE_PFC] && ops->ieee_setpfc) { |
John Fastabend | 3e29027 | 2010-12-30 09:25:46 +0000 | [diff] [blame] | 1197 | struct ieee_pfc *pfc = nla_data(ieee[DCB_ATTR_IEEE_PFC]); |
| 1198 | err = ops->ieee_setpfc(netdev, pfc); |
| 1199 | if (err) |
| 1200 | goto err; |
| 1201 | } |
| 1202 | |
John Fastabend | 9ab933a | 2010-12-30 09:26:31 +0000 | [diff] [blame] | 1203 | if (ieee[DCB_ATTR_IEEE_APP_TABLE]) { |
John Fastabend | 3e29027 | 2010-12-30 09:25:46 +0000 | [diff] [blame] | 1204 | struct nlattr *attr; |
| 1205 | int rem; |
| 1206 | |
| 1207 | nla_for_each_nested(attr, ieee[DCB_ATTR_IEEE_APP_TABLE], rem) { |
| 1208 | struct dcb_app *app_data; |
| 1209 | if (nla_type(attr) != DCB_ATTR_IEEE_APP) |
| 1210 | continue; |
| 1211 | app_data = nla_data(attr); |
John Fastabend | 9ab933a | 2010-12-30 09:26:31 +0000 | [diff] [blame] | 1212 | if (ops->ieee_setapp) |
| 1213 | err = ops->ieee_setapp(netdev, app_data); |
| 1214 | else |
| 1215 | err = dcb_setapp(netdev, app_data); |
John Fastabend | 3e29027 | 2010-12-30 09:25:46 +0000 | [diff] [blame] | 1216 | if (err) |
| 1217 | goto err; |
| 1218 | } |
| 1219 | } |
| 1220 | |
| 1221 | err: |
| 1222 | dcbnl_reply(err, RTM_SETDCB, DCB_CMD_IEEE_SET, DCB_ATTR_IEEE, |
| 1223 | pid, seq, flags); |
| 1224 | return err; |
| 1225 | } |
| 1226 | |
| 1227 | |
| 1228 | /* Handle IEEE 802.1Qaz GET commands. */ |
| 1229 | static int dcbnl_ieee_get(struct net_device *netdev, struct nlattr **tb, |
| 1230 | u32 pid, u32 seq, u16 flags) |
| 1231 | { |
| 1232 | struct sk_buff *skb; |
| 1233 | struct nlmsghdr *nlh; |
| 1234 | struct dcbmsg *dcb; |
John Fastabend | 9ab933a | 2010-12-30 09:26:31 +0000 | [diff] [blame] | 1235 | struct nlattr *ieee, *app; |
| 1236 | struct dcb_app_type *itr; |
John Fastabend | 3e29027 | 2010-12-30 09:25:46 +0000 | [diff] [blame] | 1237 | const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops; |
| 1238 | int err; |
| 1239 | |
| 1240 | if (!ops) |
| 1241 | return -EOPNOTSUPP; |
| 1242 | |
| 1243 | skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
| 1244 | if (!skb) |
| 1245 | return -ENOBUFS; |
| 1246 | |
| 1247 | nlh = NLMSG_NEW(skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags); |
| 1248 | |
| 1249 | dcb = NLMSG_DATA(nlh); |
| 1250 | dcb->dcb_family = AF_UNSPEC; |
| 1251 | dcb->cmd = DCB_CMD_IEEE_GET; |
| 1252 | |
| 1253 | NLA_PUT_STRING(skb, DCB_ATTR_IFNAME, netdev->name); |
| 1254 | |
| 1255 | ieee = nla_nest_start(skb, DCB_ATTR_IEEE); |
| 1256 | if (!ieee) |
| 1257 | goto nla_put_failure; |
| 1258 | |
| 1259 | if (ops->ieee_getets) { |
| 1260 | struct ieee_ets ets; |
| 1261 | err = ops->ieee_getets(netdev, &ets); |
| 1262 | if (!err) |
| 1263 | NLA_PUT(skb, DCB_ATTR_IEEE_ETS, sizeof(ets), &ets); |
| 1264 | } |
| 1265 | |
| 1266 | if (ops->ieee_getpfc) { |
| 1267 | struct ieee_pfc pfc; |
| 1268 | err = ops->ieee_getpfc(netdev, &pfc); |
| 1269 | if (!err) |
| 1270 | NLA_PUT(skb, DCB_ATTR_IEEE_PFC, sizeof(pfc), &pfc); |
| 1271 | } |
| 1272 | |
John Fastabend | 9ab933a | 2010-12-30 09:26:31 +0000 | [diff] [blame] | 1273 | app = nla_nest_start(skb, DCB_ATTR_IEEE_APP_TABLE); |
| 1274 | if (!app) |
| 1275 | goto nla_put_failure; |
| 1276 | |
| 1277 | spin_lock(&dcb_lock); |
| 1278 | list_for_each_entry(itr, &dcb_app_list, list) { |
Dan Carpenter | 70bfa2d | 2011-01-04 21:03:12 +0000 | [diff] [blame] | 1279 | if (strncmp(itr->name, netdev->name, IFNAMSIZ) == 0) { |
| 1280 | err = nla_put(skb, DCB_ATTR_IEEE_APP, sizeof(itr->app), |
| 1281 | &itr->app); |
| 1282 | if (err) { |
| 1283 | spin_unlock(&dcb_lock); |
| 1284 | goto nla_put_failure; |
| 1285 | } |
| 1286 | } |
John Fastabend | 9ab933a | 2010-12-30 09:26:31 +0000 | [diff] [blame] | 1287 | } |
| 1288 | spin_unlock(&dcb_lock); |
| 1289 | nla_nest_end(skb, app); |
| 1290 | |
John Fastabend | 3e29027 | 2010-12-30 09:25:46 +0000 | [diff] [blame] | 1291 | nla_nest_end(skb, ieee); |
| 1292 | nlmsg_end(skb, nlh); |
| 1293 | |
| 1294 | return rtnl_unicast(skb, &init_net, pid); |
| 1295 | nla_put_failure: |
| 1296 | nlmsg_cancel(skb, nlh); |
| 1297 | nlmsg_failure: |
| 1298 | kfree_skb(skb); |
| 1299 | return -1; |
| 1300 | } |
| 1301 | |
Shmulik Ravid | 6241b62 | 2010-12-30 06:26:48 +0000 | [diff] [blame] | 1302 | /* DCBX configuration */ |
| 1303 | static int dcbnl_getdcbx(struct net_device *netdev, struct nlattr **tb, |
| 1304 | u32 pid, u32 seq, u16 flags) |
| 1305 | { |
Shmulik Ravid | 7f891cf | 2011-01-03 08:04:59 +0000 | [diff] [blame] | 1306 | int ret; |
Shmulik Ravid | 6241b62 | 2010-12-30 06:26:48 +0000 | [diff] [blame] | 1307 | |
| 1308 | if (!netdev->dcbnl_ops->getdcbx) |
Shmulik Ravid | 7f891cf | 2011-01-03 08:04:59 +0000 | [diff] [blame] | 1309 | return -EOPNOTSUPP; |
Shmulik Ravid | 6241b62 | 2010-12-30 06:26:48 +0000 | [diff] [blame] | 1310 | |
| 1311 | ret = dcbnl_reply(netdev->dcbnl_ops->getdcbx(netdev), RTM_GETDCB, |
| 1312 | DCB_CMD_GDCBX, DCB_ATTR_DCBX, pid, seq, flags); |
| 1313 | |
| 1314 | return ret; |
| 1315 | } |
| 1316 | |
| 1317 | static int dcbnl_setdcbx(struct net_device *netdev, struct nlattr **tb, |
| 1318 | u32 pid, u32 seq, u16 flags) |
| 1319 | { |
Shmulik Ravid | 7f891cf | 2011-01-03 08:04:59 +0000 | [diff] [blame] | 1320 | int ret; |
Shmulik Ravid | 6241b62 | 2010-12-30 06:26:48 +0000 | [diff] [blame] | 1321 | u8 value; |
| 1322 | |
Shmulik Ravid | 7f891cf | 2011-01-03 08:04:59 +0000 | [diff] [blame] | 1323 | if (!netdev->dcbnl_ops->setdcbx) |
| 1324 | return -EOPNOTSUPP; |
| 1325 | |
| 1326 | if (!tb[DCB_ATTR_DCBX]) |
| 1327 | return -EINVAL; |
Shmulik Ravid | 6241b62 | 2010-12-30 06:26:48 +0000 | [diff] [blame] | 1328 | |
| 1329 | value = nla_get_u8(tb[DCB_ATTR_DCBX]); |
| 1330 | |
| 1331 | ret = dcbnl_reply(netdev->dcbnl_ops->setdcbx(netdev, value), |
| 1332 | RTM_SETDCB, DCB_CMD_SDCBX, DCB_ATTR_DCBX, |
| 1333 | pid, seq, flags); |
| 1334 | |
| 1335 | return ret; |
| 1336 | } |
| 1337 | |
Shmulik Ravid | ea45fe4 | 2010-12-30 06:26:55 +0000 | [diff] [blame] | 1338 | static int dcbnl_getfeatcfg(struct net_device *netdev, struct nlattr **tb, |
| 1339 | u32 pid, u32 seq, u16 flags) |
| 1340 | { |
| 1341 | struct sk_buff *dcbnl_skb; |
| 1342 | struct nlmsghdr *nlh; |
| 1343 | struct dcbmsg *dcb; |
| 1344 | struct nlattr *data[DCB_FEATCFG_ATTR_MAX + 1], *nest; |
| 1345 | u8 value; |
Shmulik Ravid | 7f891cf | 2011-01-03 08:04:59 +0000 | [diff] [blame] | 1346 | int ret, i; |
Shmulik Ravid | ea45fe4 | 2010-12-30 06:26:55 +0000 | [diff] [blame] | 1347 | int getall = 0; |
| 1348 | |
Shmulik Ravid | 7f891cf | 2011-01-03 08:04:59 +0000 | [diff] [blame] | 1349 | if (!netdev->dcbnl_ops->getfeatcfg) |
| 1350 | return -EOPNOTSUPP; |
| 1351 | |
| 1352 | if (!tb[DCB_ATTR_FEATCFG]) |
| 1353 | return -EINVAL; |
Shmulik Ravid | ea45fe4 | 2010-12-30 06:26:55 +0000 | [diff] [blame] | 1354 | |
| 1355 | ret = nla_parse_nested(data, DCB_FEATCFG_ATTR_MAX, tb[DCB_ATTR_FEATCFG], |
| 1356 | dcbnl_featcfg_nest); |
Shmulik Ravid | 7f891cf | 2011-01-03 08:04:59 +0000 | [diff] [blame] | 1357 | if (ret) |
Shmulik Ravid | ea45fe4 | 2010-12-30 06:26:55 +0000 | [diff] [blame] | 1358 | goto err_out; |
Shmulik Ravid | ea45fe4 | 2010-12-30 06:26:55 +0000 | [diff] [blame] | 1359 | |
| 1360 | dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
| 1361 | if (!dcbnl_skb) { |
Shmulik Ravid | 7f891cf | 2011-01-03 08:04:59 +0000 | [diff] [blame] | 1362 | ret = -ENOBUFS; |
Shmulik Ravid | ea45fe4 | 2010-12-30 06:26:55 +0000 | [diff] [blame] | 1363 | goto err_out; |
| 1364 | } |
| 1365 | |
| 1366 | nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags); |
| 1367 | |
| 1368 | dcb = NLMSG_DATA(nlh); |
| 1369 | dcb->dcb_family = AF_UNSPEC; |
| 1370 | dcb->cmd = DCB_CMD_GFEATCFG; |
| 1371 | |
| 1372 | nest = nla_nest_start(dcbnl_skb, DCB_ATTR_FEATCFG); |
| 1373 | if (!nest) { |
Shmulik Ravid | 7f891cf | 2011-01-03 08:04:59 +0000 | [diff] [blame] | 1374 | ret = -EMSGSIZE; |
| 1375 | goto nla_put_failure; |
Shmulik Ravid | ea45fe4 | 2010-12-30 06:26:55 +0000 | [diff] [blame] | 1376 | } |
| 1377 | |
| 1378 | if (data[DCB_FEATCFG_ATTR_ALL]) |
| 1379 | getall = 1; |
| 1380 | |
| 1381 | for (i = DCB_FEATCFG_ATTR_ALL+1; i <= DCB_FEATCFG_ATTR_MAX; i++) { |
| 1382 | if (!getall && !data[i]) |
| 1383 | continue; |
| 1384 | |
| 1385 | ret = netdev->dcbnl_ops->getfeatcfg(netdev, i, &value); |
Shmulik Ravid | 7f891cf | 2011-01-03 08:04:59 +0000 | [diff] [blame] | 1386 | if (!ret) |
Shmulik Ravid | ea45fe4 | 2010-12-30 06:26:55 +0000 | [diff] [blame] | 1387 | ret = nla_put_u8(dcbnl_skb, i, value); |
| 1388 | |
Shmulik Ravid | 7f891cf | 2011-01-03 08:04:59 +0000 | [diff] [blame] | 1389 | if (ret) { |
| 1390 | nla_nest_cancel(dcbnl_skb, nest); |
| 1391 | goto nla_put_failure; |
| 1392 | } |
Shmulik Ravid | ea45fe4 | 2010-12-30 06:26:55 +0000 | [diff] [blame] | 1393 | } |
| 1394 | nla_nest_end(dcbnl_skb, nest); |
| 1395 | |
| 1396 | nlmsg_end(dcbnl_skb, nlh); |
| 1397 | |
Shmulik Ravid | 7f891cf | 2011-01-03 08:04:59 +0000 | [diff] [blame] | 1398 | return rtnl_unicast(dcbnl_skb, &init_net, pid); |
| 1399 | nla_put_failure: |
| 1400 | nlmsg_cancel(dcbnl_skb, nlh); |
Shmulik Ravid | ea45fe4 | 2010-12-30 06:26:55 +0000 | [diff] [blame] | 1401 | nlmsg_failure: |
Shmulik Ravid | ea45fe4 | 2010-12-30 06:26:55 +0000 | [diff] [blame] | 1402 | kfree_skb(dcbnl_skb); |
| 1403 | err_out: |
| 1404 | return ret; |
| 1405 | } |
| 1406 | |
| 1407 | static int dcbnl_setfeatcfg(struct net_device *netdev, struct nlattr **tb, |
| 1408 | u32 pid, u32 seq, u16 flags) |
| 1409 | { |
| 1410 | struct nlattr *data[DCB_FEATCFG_ATTR_MAX + 1]; |
Shmulik Ravid | 7f891cf | 2011-01-03 08:04:59 +0000 | [diff] [blame] | 1411 | int ret, i; |
Shmulik Ravid | ea45fe4 | 2010-12-30 06:26:55 +0000 | [diff] [blame] | 1412 | u8 value; |
Shmulik Ravid | ea45fe4 | 2010-12-30 06:26:55 +0000 | [diff] [blame] | 1413 | |
Shmulik Ravid | 7f891cf | 2011-01-03 08:04:59 +0000 | [diff] [blame] | 1414 | if (!netdev->dcbnl_ops->setfeatcfg) |
| 1415 | return -ENOTSUPP; |
| 1416 | |
| 1417 | if (!tb[DCB_ATTR_FEATCFG]) |
| 1418 | return -EINVAL; |
Shmulik Ravid | ea45fe4 | 2010-12-30 06:26:55 +0000 | [diff] [blame] | 1419 | |
| 1420 | ret = nla_parse_nested(data, DCB_FEATCFG_ATTR_MAX, tb[DCB_ATTR_FEATCFG], |
| 1421 | dcbnl_featcfg_nest); |
| 1422 | |
Shmulik Ravid | 7f891cf | 2011-01-03 08:04:59 +0000 | [diff] [blame] | 1423 | if (ret) |
Shmulik Ravid | ea45fe4 | 2010-12-30 06:26:55 +0000 | [diff] [blame] | 1424 | goto err; |
Shmulik Ravid | ea45fe4 | 2010-12-30 06:26:55 +0000 | [diff] [blame] | 1425 | |
| 1426 | for (i = DCB_FEATCFG_ATTR_ALL+1; i <= DCB_FEATCFG_ATTR_MAX; i++) { |
| 1427 | if (data[i] == NULL) |
| 1428 | continue; |
| 1429 | |
| 1430 | value = nla_get_u8(data[i]); |
| 1431 | |
| 1432 | ret = netdev->dcbnl_ops->setfeatcfg(netdev, i, value); |
| 1433 | |
| 1434 | if (ret) |
Shmulik Ravid | 7f891cf | 2011-01-03 08:04:59 +0000 | [diff] [blame] | 1435 | goto err; |
Shmulik Ravid | ea45fe4 | 2010-12-30 06:26:55 +0000 | [diff] [blame] | 1436 | } |
Shmulik Ravid | ea45fe4 | 2010-12-30 06:26:55 +0000 | [diff] [blame] | 1437 | err: |
Shmulik Ravid | 7f891cf | 2011-01-03 08:04:59 +0000 | [diff] [blame] | 1438 | dcbnl_reply(ret, RTM_SETDCB, DCB_CMD_SFEATCFG, DCB_ATTR_FEATCFG, |
| 1439 | pid, seq, flags); |
| 1440 | |
Shmulik Ravid | ea45fe4 | 2010-12-30 06:26:55 +0000 | [diff] [blame] | 1441 | return ret; |
| 1442 | } |
| 1443 | |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 1444 | static int dcb_doit(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg) |
| 1445 | { |
| 1446 | struct net *net = sock_net(skb->sk); |
| 1447 | struct net_device *netdev; |
| 1448 | struct dcbmsg *dcb = (struct dcbmsg *)NLMSG_DATA(nlh); |
| 1449 | struct nlattr *tb[DCB_ATTR_MAX + 1]; |
| 1450 | u32 pid = skb ? NETLINK_CB(skb).pid : 0; |
| 1451 | int ret = -EINVAL; |
| 1452 | |
Octavian Purdila | 09ad9bc | 2009-11-25 15:14:13 -0800 | [diff] [blame] | 1453 | if (!net_eq(net, &init_net)) |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 1454 | return -EINVAL; |
| 1455 | |
| 1456 | ret = nlmsg_parse(nlh, sizeof(*dcb), tb, DCB_ATTR_MAX, |
| 1457 | dcbnl_rtnl_policy); |
| 1458 | if (ret < 0) |
| 1459 | return ret; |
| 1460 | |
| 1461 | if (!tb[DCB_ATTR_IFNAME]) |
| 1462 | return -EINVAL; |
| 1463 | |
| 1464 | netdev = dev_get_by_name(&init_net, nla_data(tb[DCB_ATTR_IFNAME])); |
| 1465 | if (!netdev) |
| 1466 | return -EINVAL; |
| 1467 | |
| 1468 | if (!netdev->dcbnl_ops) |
| 1469 | goto errout; |
| 1470 | |
| 1471 | switch (dcb->cmd) { |
| 1472 | case DCB_CMD_GSTATE: |
| 1473 | ret = dcbnl_getstate(netdev, tb, pid, nlh->nlmsg_seq, |
| 1474 | nlh->nlmsg_flags); |
| 1475 | goto out; |
| 1476 | case DCB_CMD_PFC_GCFG: |
| 1477 | ret = dcbnl_getpfccfg(netdev, tb, pid, nlh->nlmsg_seq, |
| 1478 | nlh->nlmsg_flags); |
| 1479 | goto out; |
| 1480 | case DCB_CMD_GPERM_HWADDR: |
| 1481 | ret = dcbnl_getperm_hwaddr(netdev, tb, pid, nlh->nlmsg_seq, |
| 1482 | nlh->nlmsg_flags); |
| 1483 | goto out; |
| 1484 | case DCB_CMD_PGTX_GCFG: |
| 1485 | ret = dcbnl_pgtx_getcfg(netdev, tb, pid, nlh->nlmsg_seq, |
| 1486 | nlh->nlmsg_flags); |
| 1487 | goto out; |
| 1488 | case DCB_CMD_PGRX_GCFG: |
| 1489 | ret = dcbnl_pgrx_getcfg(netdev, tb, pid, nlh->nlmsg_seq, |
| 1490 | nlh->nlmsg_flags); |
| 1491 | goto out; |
Alexander Duyck | 859ee3c | 2008-11-20 21:10:23 -0800 | [diff] [blame] | 1492 | case DCB_CMD_BCN_GCFG: |
| 1493 | ret = dcbnl_bcn_getcfg(netdev, tb, pid, nlh->nlmsg_seq, |
| 1494 | nlh->nlmsg_flags); |
| 1495 | goto out; |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 1496 | case DCB_CMD_SSTATE: |
| 1497 | ret = dcbnl_setstate(netdev, tb, pid, nlh->nlmsg_seq, |
| 1498 | nlh->nlmsg_flags); |
| 1499 | goto out; |
| 1500 | case DCB_CMD_PFC_SCFG: |
| 1501 | ret = dcbnl_setpfccfg(netdev, tb, pid, nlh->nlmsg_seq, |
| 1502 | nlh->nlmsg_flags); |
| 1503 | goto out; |
| 1504 | |
| 1505 | case DCB_CMD_SET_ALL: |
| 1506 | ret = dcbnl_setall(netdev, tb, pid, nlh->nlmsg_seq, |
| 1507 | nlh->nlmsg_flags); |
| 1508 | goto out; |
| 1509 | case DCB_CMD_PGTX_SCFG: |
| 1510 | ret = dcbnl_pgtx_setcfg(netdev, tb, pid, nlh->nlmsg_seq, |
| 1511 | nlh->nlmsg_flags); |
| 1512 | goto out; |
| 1513 | case DCB_CMD_PGRX_SCFG: |
| 1514 | ret = dcbnl_pgrx_setcfg(netdev, tb, pid, nlh->nlmsg_seq, |
| 1515 | nlh->nlmsg_flags); |
| 1516 | goto out; |
Alexander Duyck | 4613218 | 2008-11-20 21:05:08 -0800 | [diff] [blame] | 1517 | case DCB_CMD_GCAP: |
| 1518 | ret = dcbnl_getcap(netdev, tb, pid, nlh->nlmsg_seq, |
| 1519 | nlh->nlmsg_flags); |
| 1520 | goto out; |
Alexander Duyck | 33dbabc | 2008-11-20 21:08:19 -0800 | [diff] [blame] | 1521 | case DCB_CMD_GNUMTCS: |
| 1522 | ret = dcbnl_getnumtcs(netdev, tb, pid, nlh->nlmsg_seq, |
| 1523 | nlh->nlmsg_flags); |
| 1524 | goto out; |
| 1525 | case DCB_CMD_SNUMTCS: |
| 1526 | ret = dcbnl_setnumtcs(netdev, tb, pid, nlh->nlmsg_seq, |
| 1527 | nlh->nlmsg_flags); |
| 1528 | goto out; |
Alexander Duyck | 0eb3aa9 | 2008-11-20 21:09:23 -0800 | [diff] [blame] | 1529 | case DCB_CMD_PFC_GSTATE: |
| 1530 | ret = dcbnl_getpfcstate(netdev, tb, pid, nlh->nlmsg_seq, |
| 1531 | nlh->nlmsg_flags); |
| 1532 | goto out; |
| 1533 | case DCB_CMD_PFC_SSTATE: |
| 1534 | ret = dcbnl_setpfcstate(netdev, tb, pid, nlh->nlmsg_seq, |
| 1535 | nlh->nlmsg_flags); |
| 1536 | goto out; |
Alexander Duyck | 859ee3c | 2008-11-20 21:10:23 -0800 | [diff] [blame] | 1537 | case DCB_CMD_BCN_SCFG: |
| 1538 | ret = dcbnl_bcn_setcfg(netdev, tb, pid, nlh->nlmsg_seq, |
| 1539 | nlh->nlmsg_flags); |
| 1540 | goto out; |
Yi Zou | 5794968 | 2009-08-31 12:33:40 +0000 | [diff] [blame] | 1541 | case DCB_CMD_GAPP: |
| 1542 | ret = dcbnl_getapp(netdev, tb, pid, nlh->nlmsg_seq, |
| 1543 | nlh->nlmsg_flags); |
| 1544 | goto out; |
| 1545 | case DCB_CMD_SAPP: |
| 1546 | ret = dcbnl_setapp(netdev, tb, pid, nlh->nlmsg_seq, |
| 1547 | nlh->nlmsg_flags); |
| 1548 | goto out; |
John Fastabend | 3e29027 | 2010-12-30 09:25:46 +0000 | [diff] [blame] | 1549 | case DCB_CMD_IEEE_SET: |
| 1550 | ret = dcbnl_ieee_set(netdev, tb, pid, nlh->nlmsg_seq, |
| 1551 | nlh->nlmsg_flags); |
| 1552 | goto out; |
| 1553 | case DCB_CMD_IEEE_GET: |
| 1554 | ret = dcbnl_ieee_get(netdev, tb, pid, nlh->nlmsg_seq, |
| 1555 | nlh->nlmsg_flags); |
| 1556 | goto out; |
Shmulik Ravid | 6241b62 | 2010-12-30 06:26:48 +0000 | [diff] [blame] | 1557 | case DCB_CMD_GDCBX: |
| 1558 | ret = dcbnl_getdcbx(netdev, tb, pid, nlh->nlmsg_seq, |
| 1559 | nlh->nlmsg_flags); |
| 1560 | goto out; |
| 1561 | case DCB_CMD_SDCBX: |
| 1562 | ret = dcbnl_setdcbx(netdev, tb, pid, nlh->nlmsg_seq, |
| 1563 | nlh->nlmsg_flags); |
| 1564 | goto out; |
Shmulik Ravid | ea45fe4 | 2010-12-30 06:26:55 +0000 | [diff] [blame] | 1565 | case DCB_CMD_GFEATCFG: |
| 1566 | ret = dcbnl_getfeatcfg(netdev, tb, pid, nlh->nlmsg_seq, |
| 1567 | nlh->nlmsg_flags); |
| 1568 | goto out; |
| 1569 | case DCB_CMD_SFEATCFG: |
| 1570 | ret = dcbnl_setfeatcfg(netdev, tb, pid, nlh->nlmsg_seq, |
| 1571 | nlh->nlmsg_flags); |
| 1572 | goto out; |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 1573 | default: |
| 1574 | goto errout; |
| 1575 | } |
| 1576 | errout: |
| 1577 | ret = -EINVAL; |
| 1578 | out: |
| 1579 | dev_put(netdev); |
| 1580 | return ret; |
| 1581 | } |
| 1582 | |
John Fastabend | 9ab933a | 2010-12-30 09:26:31 +0000 | [diff] [blame] | 1583 | /** |
| 1584 | * dcb_getapp - retrieve the DCBX application user priority |
| 1585 | * |
| 1586 | * On success returns a non-zero 802.1p user priority bitmap |
| 1587 | * otherwise returns 0 as the invalid user priority bitmap to |
| 1588 | * indicate an error. |
| 1589 | */ |
| 1590 | u8 dcb_getapp(struct net_device *dev, struct dcb_app *app) |
| 1591 | { |
| 1592 | struct dcb_app_type *itr; |
| 1593 | u8 prio = 0; |
| 1594 | |
| 1595 | spin_lock(&dcb_lock); |
| 1596 | list_for_each_entry(itr, &dcb_app_list, list) { |
| 1597 | if (itr->app.selector == app->selector && |
| 1598 | itr->app.protocol == app->protocol && |
| 1599 | (strncmp(itr->name, dev->name, IFNAMSIZ) == 0)) { |
| 1600 | prio = itr->app.priority; |
| 1601 | break; |
| 1602 | } |
| 1603 | } |
| 1604 | spin_unlock(&dcb_lock); |
| 1605 | |
| 1606 | return prio; |
| 1607 | } |
| 1608 | EXPORT_SYMBOL(dcb_getapp); |
| 1609 | |
| 1610 | /** |
| 1611 | * ixgbe_dcbnl_setapp - add dcb application data to app list |
| 1612 | * |
| 1613 | * Priority 0 is the default priority this removes applications |
| 1614 | * from the app list if the priority is set to zero. |
| 1615 | */ |
| 1616 | u8 dcb_setapp(struct net_device *dev, struct dcb_app *new) |
| 1617 | { |
| 1618 | struct dcb_app_type *itr; |
John Fastabend | 7ec7927 | 2011-01-31 12:00:59 +0000 | [diff] [blame] | 1619 | struct dcb_app_type event; |
| 1620 | |
| 1621 | memcpy(&event.name, dev->name, sizeof(event.name)); |
| 1622 | memcpy(&event.app, new, sizeof(event.app)); |
John Fastabend | 9ab933a | 2010-12-30 09:26:31 +0000 | [diff] [blame] | 1623 | |
| 1624 | spin_lock(&dcb_lock); |
| 1625 | /* Search for existing match and replace */ |
| 1626 | list_for_each_entry(itr, &dcb_app_list, list) { |
| 1627 | if (itr->app.selector == new->selector && |
| 1628 | itr->app.protocol == new->protocol && |
| 1629 | (strncmp(itr->name, dev->name, IFNAMSIZ) == 0)) { |
| 1630 | if (new->priority) |
| 1631 | itr->app.priority = new->priority; |
| 1632 | else { |
| 1633 | list_del(&itr->list); |
| 1634 | kfree(itr); |
| 1635 | } |
| 1636 | goto out; |
| 1637 | } |
| 1638 | } |
| 1639 | /* App type does not exist add new application type */ |
| 1640 | if (new->priority) { |
| 1641 | struct dcb_app_type *entry; |
| 1642 | entry = kmalloc(sizeof(struct dcb_app_type), GFP_ATOMIC); |
| 1643 | if (!entry) { |
| 1644 | spin_unlock(&dcb_lock); |
| 1645 | return -ENOMEM; |
| 1646 | } |
| 1647 | |
| 1648 | memcpy(&entry->app, new, sizeof(*new)); |
| 1649 | strncpy(entry->name, dev->name, IFNAMSIZ); |
| 1650 | list_add(&entry->list, &dcb_app_list); |
| 1651 | } |
| 1652 | out: |
| 1653 | spin_unlock(&dcb_lock); |
John Fastabend | 7ec7927 | 2011-01-31 12:00:59 +0000 | [diff] [blame] | 1654 | call_dcbevent_notifiers(DCB_APP_EVENT, &event); |
John Fastabend | 9ab933a | 2010-12-30 09:26:31 +0000 | [diff] [blame] | 1655 | return 0; |
| 1656 | } |
| 1657 | EXPORT_SYMBOL(dcb_setapp); |
| 1658 | |
Shmulik Ravid | 7c14c3f | 2010-12-30 06:27:10 +0000 | [diff] [blame] | 1659 | static void dcb_flushapp(void) |
John Fastabend | 9ab933a | 2010-12-30 09:26:31 +0000 | [diff] [blame] | 1660 | { |
| 1661 | struct dcb_app_type *app; |
Dan Carpenter | 2a8fe00 | 2011-01-04 21:03:44 +0000 | [diff] [blame] | 1662 | struct dcb_app_type *tmp; |
John Fastabend | 9ab933a | 2010-12-30 09:26:31 +0000 | [diff] [blame] | 1663 | |
| 1664 | spin_lock(&dcb_lock); |
Dan Carpenter | 2a8fe00 | 2011-01-04 21:03:44 +0000 | [diff] [blame] | 1665 | list_for_each_entry_safe(app, tmp, &dcb_app_list, list) { |
John Fastabend | 9ab933a | 2010-12-30 09:26:31 +0000 | [diff] [blame] | 1666 | list_del(&app->list); |
| 1667 | kfree(app); |
| 1668 | } |
| 1669 | spin_unlock(&dcb_lock); |
| 1670 | } |
| 1671 | |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 1672 | static int __init dcbnl_init(void) |
| 1673 | { |
John Fastabend | 9ab933a | 2010-12-30 09:26:31 +0000 | [diff] [blame] | 1674 | INIT_LIST_HEAD(&dcb_app_list); |
| 1675 | |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 1676 | rtnl_register(PF_UNSPEC, RTM_GETDCB, dcb_doit, NULL); |
| 1677 | rtnl_register(PF_UNSPEC, RTM_SETDCB, dcb_doit, NULL); |
| 1678 | |
| 1679 | return 0; |
| 1680 | } |
| 1681 | module_init(dcbnl_init); |
| 1682 | |
| 1683 | static void __exit dcbnl_exit(void) |
| 1684 | { |
| 1685 | rtnl_unregister(PF_UNSPEC, RTM_GETDCB); |
| 1686 | rtnl_unregister(PF_UNSPEC, RTM_SETDCB); |
John Fastabend | 9ab933a | 2010-12-30 09:26:31 +0000 | [diff] [blame] | 1687 | dcb_flushapp(); |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 1688 | } |
| 1689 | module_exit(dcbnl_exit); |