Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1 | /* |
Andy Zhou | 971427f3 | 2014-09-15 19:37:25 -0700 | [diff] [blame] | 2 | * Copyright (c) 2007-2014 Nicira, Inc. |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 3 | * |
| 4 | * This program is free software; you can redistribute it and/or |
| 5 | * modify it under the terms of version 2 of the GNU General Public |
| 6 | * License as published by the Free Software Foundation. |
| 7 | * |
| 8 | * This program is distributed in the hope that it will be useful, but |
| 9 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 11 | * General Public License for more details. |
| 12 | * |
| 13 | * You should have received a copy of the GNU General Public License |
| 14 | * along with this program; if not, write to the Free Software |
| 15 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| 16 | * 02110-1301, USA |
| 17 | */ |
| 18 | |
Joe Perches | 2235ad1 | 2014-02-03 17:18:21 -0800 | [diff] [blame] | 19 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| 20 | |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 21 | #include "flow.h" |
| 22 | #include "datapath.h" |
| 23 | #include <linux/uaccess.h> |
| 24 | #include <linux/netdevice.h> |
| 25 | #include <linux/etherdevice.h> |
| 26 | #include <linux/if_ether.h> |
| 27 | #include <linux/if_vlan.h> |
| 28 | #include <net/llc_pdu.h> |
| 29 | #include <linux/kernel.h> |
| 30 | #include <linux/jhash.h> |
| 31 | #include <linux/jiffies.h> |
| 32 | #include <linux/llc.h> |
| 33 | #include <linux/module.h> |
| 34 | #include <linux/in.h> |
| 35 | #include <linux/rcupdate.h> |
| 36 | #include <linux/if_arp.h> |
| 37 | #include <linux/ip.h> |
| 38 | #include <linux/ipv6.h> |
| 39 | #include <linux/sctp.h> |
| 40 | #include <linux/tcp.h> |
| 41 | #include <linux/udp.h> |
| 42 | #include <linux/icmp.h> |
| 43 | #include <linux/icmpv6.h> |
| 44 | #include <linux/rculist.h> |
Jesse Gross | f579668 | 2014-10-03 15:35:33 -0700 | [diff] [blame] | 45 | #include <net/geneve.h> |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 46 | #include <net/ip.h> |
| 47 | #include <net/ipv6.h> |
| 48 | #include <net/ndisc.h> |
Simon Horman | 25cd9ba | 2014-10-06 05:05:13 -0700 | [diff] [blame] | 49 | #include <net/mpls.h> |
Thomas Graf | 614732e | 2015-07-21 10:44:06 +0200 | [diff] [blame] | 50 | #include <net/vxlan.h> |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 51 | |
| 52 | #include "flow_netlink.h" |
| 53 | |
Thomas Graf | 81bfe3c | 2015-01-15 03:53:58 +0100 | [diff] [blame] | 54 | struct ovs_len_tbl { |
| 55 | int len; |
| 56 | const struct ovs_len_tbl *next; |
| 57 | }; |
| 58 | |
| 59 | #define OVS_ATTR_NESTED -1 |
Jesse Gross | 982b527 | 2015-09-11 18:38:28 -0700 | [diff] [blame] | 60 | #define OVS_ATTR_VARIABLE -2 |
Thomas Graf | 81bfe3c | 2015-01-15 03:53:58 +0100 | [diff] [blame] | 61 | |
Pravin B Shelar | a85311b | 2014-10-19 12:03:40 -0700 | [diff] [blame] | 62 | static void update_range(struct sw_flow_match *match, |
| 63 | size_t offset, size_t size, bool is_mask) |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 64 | { |
Pravin B Shelar | a85311b | 2014-10-19 12:03:40 -0700 | [diff] [blame] | 65 | struct sw_flow_key_range *range; |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 66 | size_t start = rounddown(offset, sizeof(long)); |
| 67 | size_t end = roundup(offset + size, sizeof(long)); |
| 68 | |
| 69 | if (!is_mask) |
| 70 | range = &match->range; |
Pravin B Shelar | a85311b | 2014-10-19 12:03:40 -0700 | [diff] [blame] | 71 | else |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 72 | range = &match->mask->range; |
| 73 | |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 74 | if (range->start == range->end) { |
| 75 | range->start = start; |
| 76 | range->end = end; |
| 77 | return; |
| 78 | } |
| 79 | |
| 80 | if (range->start > start) |
| 81 | range->start = start; |
| 82 | |
| 83 | if (range->end < end) |
| 84 | range->end = end; |
| 85 | } |
| 86 | |
| 87 | #define SW_FLOW_KEY_PUT(match, field, value, is_mask) \ |
| 88 | do { \ |
Pravin B Shelar | a85311b | 2014-10-19 12:03:40 -0700 | [diff] [blame] | 89 | update_range(match, offsetof(struct sw_flow_key, field), \ |
| 90 | sizeof((match)->key->field), is_mask); \ |
| 91 | if (is_mask) \ |
| 92 | (match)->mask->key.field = value; \ |
| 93 | else \ |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 94 | (match)->key->field = value; \ |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 95 | } while (0) |
| 96 | |
Jesse Gross | f579668 | 2014-10-03 15:35:33 -0700 | [diff] [blame] | 97 | #define SW_FLOW_KEY_MEMCPY_OFFSET(match, offset, value_p, len, is_mask) \ |
| 98 | do { \ |
Pravin B Shelar | a85311b | 2014-10-19 12:03:40 -0700 | [diff] [blame] | 99 | update_range(match, offset, len, is_mask); \ |
Jesse Gross | f579668 | 2014-10-03 15:35:33 -0700 | [diff] [blame] | 100 | if (is_mask) \ |
| 101 | memcpy((u8 *)&(match)->mask->key + offset, value_p, \ |
Pravin B Shelar | a85311b | 2014-10-19 12:03:40 -0700 | [diff] [blame] | 102 | len); \ |
Jesse Gross | f579668 | 2014-10-03 15:35:33 -0700 | [diff] [blame] | 103 | else \ |
| 104 | memcpy((u8 *)(match)->key + offset, value_p, len); \ |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 105 | } while (0) |
| 106 | |
Jesse Gross | f579668 | 2014-10-03 15:35:33 -0700 | [diff] [blame] | 107 | #define SW_FLOW_KEY_MEMCPY(match, field, value_p, len, is_mask) \ |
| 108 | SW_FLOW_KEY_MEMCPY_OFFSET(match, offsetof(struct sw_flow_key, field), \ |
| 109 | value_p, len, is_mask) |
| 110 | |
Pravin B Shelar | a85311b | 2014-10-19 12:03:40 -0700 | [diff] [blame] | 111 | #define SW_FLOW_KEY_MEMSET_FIELD(match, field, value, is_mask) \ |
| 112 | do { \ |
| 113 | update_range(match, offsetof(struct sw_flow_key, field), \ |
| 114 | sizeof((match)->key->field), is_mask); \ |
| 115 | if (is_mask) \ |
| 116 | memset((u8 *)&(match)->mask->key.field, value, \ |
| 117 | sizeof((match)->mask->key.field)); \ |
| 118 | else \ |
Pravin B Shelar | f47de06 | 2014-10-16 21:55:45 -0700 | [diff] [blame] | 119 | memset((u8 *)&(match)->key->field, value, \ |
| 120 | sizeof((match)->key->field)); \ |
Pravin B Shelar | f47de06 | 2014-10-16 21:55:45 -0700 | [diff] [blame] | 121 | } while (0) |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 122 | |
| 123 | static bool match_validate(const struct sw_flow_match *match, |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 124 | u64 key_attrs, u64 mask_attrs, bool log) |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 125 | { |
| 126 | u64 key_expected = 1 << OVS_KEY_ATTR_ETHERNET; |
| 127 | u64 mask_allowed = key_attrs; /* At most allow all key attributes */ |
| 128 | |
| 129 | /* The following mask attributes allowed only if they |
| 130 | * pass the validation tests. */ |
| 131 | mask_allowed &= ~((1 << OVS_KEY_ATTR_IPV4) |
| 132 | | (1 << OVS_KEY_ATTR_IPV6) |
| 133 | | (1 << OVS_KEY_ATTR_TCP) |
Jarno Rajahalme | 5eb26b1 | 2013-10-23 01:44:59 -0700 | [diff] [blame] | 134 | | (1 << OVS_KEY_ATTR_TCP_FLAGS) |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 135 | | (1 << OVS_KEY_ATTR_UDP) |
| 136 | | (1 << OVS_KEY_ATTR_SCTP) |
| 137 | | (1 << OVS_KEY_ATTR_ICMP) |
| 138 | | (1 << OVS_KEY_ATTR_ICMPV6) |
| 139 | | (1 << OVS_KEY_ATTR_ARP) |
Simon Horman | 25cd9ba | 2014-10-06 05:05:13 -0700 | [diff] [blame] | 140 | | (1 << OVS_KEY_ATTR_ND) |
| 141 | | (1 << OVS_KEY_ATTR_MPLS)); |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 142 | |
| 143 | /* Always allowed mask fields. */ |
| 144 | mask_allowed |= ((1 << OVS_KEY_ATTR_TUNNEL) |
| 145 | | (1 << OVS_KEY_ATTR_IN_PORT) |
| 146 | | (1 << OVS_KEY_ATTR_ETHERTYPE)); |
| 147 | |
| 148 | /* Check key attributes. */ |
| 149 | if (match->key->eth.type == htons(ETH_P_ARP) |
| 150 | || match->key->eth.type == htons(ETH_P_RARP)) { |
| 151 | key_expected |= 1 << OVS_KEY_ATTR_ARP; |
Pravin B Shelar | f2a01517 | 2014-11-30 23:04:17 -0800 | [diff] [blame] | 152 | if (match->mask && (match->mask->key.eth.type == htons(0xffff))) |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 153 | mask_allowed |= 1 << OVS_KEY_ATTR_ARP; |
| 154 | } |
| 155 | |
Simon Horman | 25cd9ba | 2014-10-06 05:05:13 -0700 | [diff] [blame] | 156 | if (eth_p_mpls(match->key->eth.type)) { |
| 157 | key_expected |= 1 << OVS_KEY_ATTR_MPLS; |
| 158 | if (match->mask && (match->mask->key.eth.type == htons(0xffff))) |
| 159 | mask_allowed |= 1 << OVS_KEY_ATTR_MPLS; |
| 160 | } |
| 161 | |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 162 | if (match->key->eth.type == htons(ETH_P_IP)) { |
| 163 | key_expected |= 1 << OVS_KEY_ATTR_IPV4; |
| 164 | if (match->mask && (match->mask->key.eth.type == htons(0xffff))) |
| 165 | mask_allowed |= 1 << OVS_KEY_ATTR_IPV4; |
| 166 | |
| 167 | if (match->key->ip.frag != OVS_FRAG_TYPE_LATER) { |
| 168 | if (match->key->ip.proto == IPPROTO_UDP) { |
| 169 | key_expected |= 1 << OVS_KEY_ATTR_UDP; |
| 170 | if (match->mask && (match->mask->key.ip.proto == 0xff)) |
| 171 | mask_allowed |= 1 << OVS_KEY_ATTR_UDP; |
| 172 | } |
| 173 | |
| 174 | if (match->key->ip.proto == IPPROTO_SCTP) { |
| 175 | key_expected |= 1 << OVS_KEY_ATTR_SCTP; |
| 176 | if (match->mask && (match->mask->key.ip.proto == 0xff)) |
| 177 | mask_allowed |= 1 << OVS_KEY_ATTR_SCTP; |
| 178 | } |
| 179 | |
| 180 | if (match->key->ip.proto == IPPROTO_TCP) { |
| 181 | key_expected |= 1 << OVS_KEY_ATTR_TCP; |
Jarno Rajahalme | 5eb26b1 | 2013-10-23 01:44:59 -0700 | [diff] [blame] | 182 | key_expected |= 1 << OVS_KEY_ATTR_TCP_FLAGS; |
| 183 | if (match->mask && (match->mask->key.ip.proto == 0xff)) { |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 184 | mask_allowed |= 1 << OVS_KEY_ATTR_TCP; |
Jarno Rajahalme | 5eb26b1 | 2013-10-23 01:44:59 -0700 | [diff] [blame] | 185 | mask_allowed |= 1 << OVS_KEY_ATTR_TCP_FLAGS; |
| 186 | } |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 187 | } |
| 188 | |
| 189 | if (match->key->ip.proto == IPPROTO_ICMP) { |
| 190 | key_expected |= 1 << OVS_KEY_ATTR_ICMP; |
| 191 | if (match->mask && (match->mask->key.ip.proto == 0xff)) |
| 192 | mask_allowed |= 1 << OVS_KEY_ATTR_ICMP; |
| 193 | } |
| 194 | } |
| 195 | } |
| 196 | |
| 197 | if (match->key->eth.type == htons(ETH_P_IPV6)) { |
| 198 | key_expected |= 1 << OVS_KEY_ATTR_IPV6; |
| 199 | if (match->mask && (match->mask->key.eth.type == htons(0xffff))) |
| 200 | mask_allowed |= 1 << OVS_KEY_ATTR_IPV6; |
| 201 | |
| 202 | if (match->key->ip.frag != OVS_FRAG_TYPE_LATER) { |
| 203 | if (match->key->ip.proto == IPPROTO_UDP) { |
| 204 | key_expected |= 1 << OVS_KEY_ATTR_UDP; |
| 205 | if (match->mask && (match->mask->key.ip.proto == 0xff)) |
| 206 | mask_allowed |= 1 << OVS_KEY_ATTR_UDP; |
| 207 | } |
| 208 | |
| 209 | if (match->key->ip.proto == IPPROTO_SCTP) { |
| 210 | key_expected |= 1 << OVS_KEY_ATTR_SCTP; |
| 211 | if (match->mask && (match->mask->key.ip.proto == 0xff)) |
| 212 | mask_allowed |= 1 << OVS_KEY_ATTR_SCTP; |
| 213 | } |
| 214 | |
| 215 | if (match->key->ip.proto == IPPROTO_TCP) { |
| 216 | key_expected |= 1 << OVS_KEY_ATTR_TCP; |
Jarno Rajahalme | 5eb26b1 | 2013-10-23 01:44:59 -0700 | [diff] [blame] | 217 | key_expected |= 1 << OVS_KEY_ATTR_TCP_FLAGS; |
| 218 | if (match->mask && (match->mask->key.ip.proto == 0xff)) { |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 219 | mask_allowed |= 1 << OVS_KEY_ATTR_TCP; |
Jarno Rajahalme | 5eb26b1 | 2013-10-23 01:44:59 -0700 | [diff] [blame] | 220 | mask_allowed |= 1 << OVS_KEY_ATTR_TCP_FLAGS; |
| 221 | } |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 222 | } |
| 223 | |
| 224 | if (match->key->ip.proto == IPPROTO_ICMPV6) { |
| 225 | key_expected |= 1 << OVS_KEY_ATTR_ICMPV6; |
| 226 | if (match->mask && (match->mask->key.ip.proto == 0xff)) |
| 227 | mask_allowed |= 1 << OVS_KEY_ATTR_ICMPV6; |
| 228 | |
Jarno Rajahalme | 1139e24 | 2014-05-05 09:54:49 -0700 | [diff] [blame] | 229 | if (match->key->tp.src == |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 230 | htons(NDISC_NEIGHBOUR_SOLICITATION) || |
Jarno Rajahalme | 1139e24 | 2014-05-05 09:54:49 -0700 | [diff] [blame] | 231 | match->key->tp.src == htons(NDISC_NEIGHBOUR_ADVERTISEMENT)) { |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 232 | key_expected |= 1 << OVS_KEY_ATTR_ND; |
Pravin B Shelar | f2a01517 | 2014-11-30 23:04:17 -0800 | [diff] [blame] | 233 | if (match->mask && (match->mask->key.tp.src == htons(0xff))) |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 234 | mask_allowed |= 1 << OVS_KEY_ATTR_ND; |
| 235 | } |
| 236 | } |
| 237 | } |
| 238 | } |
| 239 | |
| 240 | if ((key_attrs & key_expected) != key_expected) { |
| 241 | /* Key attributes check failed. */ |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 242 | OVS_NLERR(log, "Missing key (keys=%llx, expected=%llx)", |
| 243 | (unsigned long long)key_attrs, |
| 244 | (unsigned long long)key_expected); |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 245 | return false; |
| 246 | } |
| 247 | |
| 248 | if ((mask_attrs & mask_allowed) != mask_attrs) { |
| 249 | /* Mask attributes check failed. */ |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 250 | OVS_NLERR(log, "Unexpected mask (mask=%llx, allowed=%llx)", |
| 251 | (unsigned long long)mask_attrs, |
| 252 | (unsigned long long)mask_allowed); |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 253 | return false; |
| 254 | } |
| 255 | |
| 256 | return true; |
| 257 | } |
| 258 | |
Wenyu Zhang | 8f0aad6 | 2014-11-06 06:51:24 -0800 | [diff] [blame] | 259 | size_t ovs_tun_key_attr_size(void) |
| 260 | { |
| 261 | /* Whenever adding new OVS_TUNNEL_KEY_ FIELDS, we should consider |
| 262 | * updating this function. |
| 263 | */ |
| 264 | return nla_total_size(8) /* OVS_TUNNEL_KEY_ATTR_ID */ |
Jiri Benc | 6b26ba3 | 2015-10-05 13:09:47 +0200 | [diff] [blame] | 265 | + nla_total_size(16) /* OVS_TUNNEL_KEY_ATTR_IPV[46]_SRC */ |
| 266 | + nla_total_size(16) /* OVS_TUNNEL_KEY_ATTR_IPV[46]_DST */ |
Wenyu Zhang | 8f0aad6 | 2014-11-06 06:51:24 -0800 | [diff] [blame] | 267 | + nla_total_size(1) /* OVS_TUNNEL_KEY_ATTR_TOS */ |
| 268 | + nla_total_size(1) /* OVS_TUNNEL_KEY_ATTR_TTL */ |
| 269 | + nla_total_size(0) /* OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT */ |
| 270 | + nla_total_size(0) /* OVS_TUNNEL_KEY_ATTR_CSUM */ |
| 271 | + nla_total_size(0) /* OVS_TUNNEL_KEY_ATTR_OAM */ |
| 272 | + nla_total_size(256) /* OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS */ |
Thomas Graf | 1dd144c | 2015-01-15 03:53:59 +0100 | [diff] [blame] | 273 | /* OVS_TUNNEL_KEY_ATTR_VXLAN_OPTS is mutually exclusive with |
| 274 | * OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS and covered by it. |
| 275 | */ |
Wenyu Zhang | 8f0aad6 | 2014-11-06 06:51:24 -0800 | [diff] [blame] | 276 | + nla_total_size(2) /* OVS_TUNNEL_KEY_ATTR_TP_SRC */ |
| 277 | + nla_total_size(2); /* OVS_TUNNEL_KEY_ATTR_TP_DST */ |
| 278 | } |
| 279 | |
Joe Stringer | 41af73e | 2014-10-18 16:14:14 -0700 | [diff] [blame] | 280 | size_t ovs_key_attr_size(void) |
| 281 | { |
| 282 | /* Whenever adding new OVS_KEY_ FIELDS, we should consider |
| 283 | * updating this function. |
| 284 | */ |
Joe Stringer | c2ac667 | 2015-08-26 11:31:52 -0700 | [diff] [blame] | 285 | BUILD_BUG_ON(OVS_KEY_ATTR_TUNNEL_INFO != 26); |
Joe Stringer | 41af73e | 2014-10-18 16:14:14 -0700 | [diff] [blame] | 286 | |
| 287 | return nla_total_size(4) /* OVS_KEY_ATTR_PRIORITY */ |
| 288 | + nla_total_size(0) /* OVS_KEY_ATTR_TUNNEL */ |
Wenyu Zhang | 8f0aad6 | 2014-11-06 06:51:24 -0800 | [diff] [blame] | 289 | + ovs_tun_key_attr_size() |
Joe Stringer | 41af73e | 2014-10-18 16:14:14 -0700 | [diff] [blame] | 290 | + nla_total_size(4) /* OVS_KEY_ATTR_IN_PORT */ |
| 291 | + nla_total_size(4) /* OVS_KEY_ATTR_SKB_MARK */ |
| 292 | + nla_total_size(4) /* OVS_KEY_ATTR_DP_HASH */ |
| 293 | + nla_total_size(4) /* OVS_KEY_ATTR_RECIRC_ID */ |
Joe Stringer | fbccce5 | 2015-10-06 11:00:00 -0700 | [diff] [blame] | 294 | + nla_total_size(4) /* OVS_KEY_ATTR_CT_STATE */ |
Joe Stringer | 7f8a436 | 2015-08-26 11:31:48 -0700 | [diff] [blame] | 295 | + nla_total_size(2) /* OVS_KEY_ATTR_CT_ZONE */ |
Joe Stringer | 182e304 | 2015-08-26 11:31:49 -0700 | [diff] [blame] | 296 | + nla_total_size(4) /* OVS_KEY_ATTR_CT_MARK */ |
Joe Stringer | 33db412 | 2015-10-01 15:00:37 -0700 | [diff] [blame] | 297 | + nla_total_size(16) /* OVS_KEY_ATTR_CT_LABELS */ |
Joe Stringer | 41af73e | 2014-10-18 16:14:14 -0700 | [diff] [blame] | 298 | + nla_total_size(12) /* OVS_KEY_ATTR_ETHERNET */ |
| 299 | + nla_total_size(2) /* OVS_KEY_ATTR_ETHERTYPE */ |
| 300 | + nla_total_size(4) /* OVS_KEY_ATTR_VLAN */ |
| 301 | + nla_total_size(0) /* OVS_KEY_ATTR_ENCAP */ |
| 302 | + nla_total_size(2) /* OVS_KEY_ATTR_ETHERTYPE */ |
| 303 | + nla_total_size(40) /* OVS_KEY_ATTR_IPV6 */ |
| 304 | + nla_total_size(2) /* OVS_KEY_ATTR_ICMPV6 */ |
| 305 | + nla_total_size(28); /* OVS_KEY_ATTR_ND */ |
| 306 | } |
| 307 | |
Jesse Gross | 982b527 | 2015-09-11 18:38:28 -0700 | [diff] [blame] | 308 | static const struct ovs_len_tbl ovs_vxlan_ext_key_lens[OVS_VXLAN_EXT_MAX + 1] = { |
| 309 | [OVS_VXLAN_EXT_GBP] = { .len = sizeof(u32) }, |
| 310 | }; |
| 311 | |
Thomas Graf | 81bfe3c | 2015-01-15 03:53:58 +0100 | [diff] [blame] | 312 | static const struct ovs_len_tbl ovs_tunnel_key_lens[OVS_TUNNEL_KEY_ATTR_MAX + 1] = { |
| 313 | [OVS_TUNNEL_KEY_ATTR_ID] = { .len = sizeof(u64) }, |
| 314 | [OVS_TUNNEL_KEY_ATTR_IPV4_SRC] = { .len = sizeof(u32) }, |
| 315 | [OVS_TUNNEL_KEY_ATTR_IPV4_DST] = { .len = sizeof(u32) }, |
| 316 | [OVS_TUNNEL_KEY_ATTR_TOS] = { .len = 1 }, |
| 317 | [OVS_TUNNEL_KEY_ATTR_TTL] = { .len = 1 }, |
| 318 | [OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT] = { .len = 0 }, |
| 319 | [OVS_TUNNEL_KEY_ATTR_CSUM] = { .len = 0 }, |
| 320 | [OVS_TUNNEL_KEY_ATTR_TP_SRC] = { .len = sizeof(u16) }, |
| 321 | [OVS_TUNNEL_KEY_ATTR_TP_DST] = { .len = sizeof(u16) }, |
| 322 | [OVS_TUNNEL_KEY_ATTR_OAM] = { .len = 0 }, |
Jesse Gross | 982b527 | 2015-09-11 18:38:28 -0700 | [diff] [blame] | 323 | [OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS] = { .len = OVS_ATTR_VARIABLE }, |
| 324 | [OVS_TUNNEL_KEY_ATTR_VXLAN_OPTS] = { .len = OVS_ATTR_NESTED, |
| 325 | .next = ovs_vxlan_ext_key_lens }, |
Jiri Benc | 6b26ba3 | 2015-10-05 13:09:47 +0200 | [diff] [blame] | 326 | [OVS_TUNNEL_KEY_ATTR_IPV6_SRC] = { .len = sizeof(struct in6_addr) }, |
| 327 | [OVS_TUNNEL_KEY_ATTR_IPV6_DST] = { .len = sizeof(struct in6_addr) }, |
Thomas Graf | 81bfe3c | 2015-01-15 03:53:58 +0100 | [diff] [blame] | 328 | }; |
| 329 | |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 330 | /* The size of the argument for each %OVS_KEY_ATTR_* Netlink attribute. */ |
Thomas Graf | 81bfe3c | 2015-01-15 03:53:58 +0100 | [diff] [blame] | 331 | static const struct ovs_len_tbl ovs_key_lens[OVS_KEY_ATTR_MAX + 1] = { |
| 332 | [OVS_KEY_ATTR_ENCAP] = { .len = OVS_ATTR_NESTED }, |
| 333 | [OVS_KEY_ATTR_PRIORITY] = { .len = sizeof(u32) }, |
| 334 | [OVS_KEY_ATTR_IN_PORT] = { .len = sizeof(u32) }, |
| 335 | [OVS_KEY_ATTR_SKB_MARK] = { .len = sizeof(u32) }, |
| 336 | [OVS_KEY_ATTR_ETHERNET] = { .len = sizeof(struct ovs_key_ethernet) }, |
| 337 | [OVS_KEY_ATTR_VLAN] = { .len = sizeof(__be16) }, |
| 338 | [OVS_KEY_ATTR_ETHERTYPE] = { .len = sizeof(__be16) }, |
| 339 | [OVS_KEY_ATTR_IPV4] = { .len = sizeof(struct ovs_key_ipv4) }, |
| 340 | [OVS_KEY_ATTR_IPV6] = { .len = sizeof(struct ovs_key_ipv6) }, |
| 341 | [OVS_KEY_ATTR_TCP] = { .len = sizeof(struct ovs_key_tcp) }, |
| 342 | [OVS_KEY_ATTR_TCP_FLAGS] = { .len = sizeof(__be16) }, |
| 343 | [OVS_KEY_ATTR_UDP] = { .len = sizeof(struct ovs_key_udp) }, |
| 344 | [OVS_KEY_ATTR_SCTP] = { .len = sizeof(struct ovs_key_sctp) }, |
| 345 | [OVS_KEY_ATTR_ICMP] = { .len = sizeof(struct ovs_key_icmp) }, |
| 346 | [OVS_KEY_ATTR_ICMPV6] = { .len = sizeof(struct ovs_key_icmpv6) }, |
| 347 | [OVS_KEY_ATTR_ARP] = { .len = sizeof(struct ovs_key_arp) }, |
| 348 | [OVS_KEY_ATTR_ND] = { .len = sizeof(struct ovs_key_nd) }, |
| 349 | [OVS_KEY_ATTR_RECIRC_ID] = { .len = sizeof(u32) }, |
| 350 | [OVS_KEY_ATTR_DP_HASH] = { .len = sizeof(u32) }, |
| 351 | [OVS_KEY_ATTR_TUNNEL] = { .len = OVS_ATTR_NESTED, |
| 352 | .next = ovs_tunnel_key_lens, }, |
| 353 | [OVS_KEY_ATTR_MPLS] = { .len = sizeof(struct ovs_key_mpls) }, |
Joe Stringer | fbccce5 | 2015-10-06 11:00:00 -0700 | [diff] [blame] | 354 | [OVS_KEY_ATTR_CT_STATE] = { .len = sizeof(u32) }, |
Joe Stringer | 7f8a436 | 2015-08-26 11:31:48 -0700 | [diff] [blame] | 355 | [OVS_KEY_ATTR_CT_ZONE] = { .len = sizeof(u16) }, |
Joe Stringer | 182e304 | 2015-08-26 11:31:49 -0700 | [diff] [blame] | 356 | [OVS_KEY_ATTR_CT_MARK] = { .len = sizeof(u32) }, |
Joe Stringer | 33db412 | 2015-10-01 15:00:37 -0700 | [diff] [blame] | 357 | [OVS_KEY_ATTR_CT_LABELS] = { .len = sizeof(struct ovs_key_ct_labels) }, |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 358 | }; |
| 359 | |
Jesse Gross | 982b527 | 2015-09-11 18:38:28 -0700 | [diff] [blame] | 360 | static bool check_attr_len(unsigned int attr_len, unsigned int expected_len) |
| 361 | { |
| 362 | return expected_len == attr_len || |
| 363 | expected_len == OVS_ATTR_NESTED || |
| 364 | expected_len == OVS_ATTR_VARIABLE; |
| 365 | } |
| 366 | |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 367 | static bool is_all_zero(const u8 *fp, size_t size) |
| 368 | { |
| 369 | int i; |
| 370 | |
| 371 | if (!fp) |
| 372 | return false; |
| 373 | |
| 374 | for (i = 0; i < size; i++) |
| 375 | if (fp[i]) |
| 376 | return false; |
| 377 | |
| 378 | return true; |
| 379 | } |
| 380 | |
| 381 | static int __parse_flow_nlattrs(const struct nlattr *attr, |
| 382 | const struct nlattr *a[], |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 383 | u64 *attrsp, bool log, bool nz) |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 384 | { |
| 385 | const struct nlattr *nla; |
| 386 | u64 attrs; |
| 387 | int rem; |
| 388 | |
| 389 | attrs = *attrsp; |
| 390 | nla_for_each_nested(nla, attr, rem) { |
| 391 | u16 type = nla_type(nla); |
| 392 | int expected_len; |
| 393 | |
| 394 | if (type > OVS_KEY_ATTR_MAX) { |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 395 | OVS_NLERR(log, "Key type %d is out of range max %d", |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 396 | type, OVS_KEY_ATTR_MAX); |
| 397 | return -EINVAL; |
| 398 | } |
| 399 | |
| 400 | if (attrs & (1 << type)) { |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 401 | OVS_NLERR(log, "Duplicate key (type %d).", type); |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 402 | return -EINVAL; |
| 403 | } |
| 404 | |
Thomas Graf | 81bfe3c | 2015-01-15 03:53:58 +0100 | [diff] [blame] | 405 | expected_len = ovs_key_lens[type].len; |
Jesse Gross | 982b527 | 2015-09-11 18:38:28 -0700 | [diff] [blame] | 406 | if (!check_attr_len(nla_len(nla), expected_len)) { |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 407 | OVS_NLERR(log, "Key %d has unexpected len %d expected %d", |
| 408 | type, nla_len(nla), expected_len); |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 409 | return -EINVAL; |
| 410 | } |
| 411 | |
| 412 | if (!nz || !is_all_zero(nla_data(nla), expected_len)) { |
| 413 | attrs |= 1 << type; |
| 414 | a[type] = nla; |
| 415 | } |
| 416 | } |
| 417 | if (rem) { |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 418 | OVS_NLERR(log, "Message has %d unknown bytes.", rem); |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 419 | return -EINVAL; |
| 420 | } |
| 421 | |
| 422 | *attrsp = attrs; |
| 423 | return 0; |
| 424 | } |
| 425 | |
| 426 | static int parse_flow_mask_nlattrs(const struct nlattr *attr, |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 427 | const struct nlattr *a[], u64 *attrsp, |
| 428 | bool log) |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 429 | { |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 430 | return __parse_flow_nlattrs(attr, a, attrsp, log, true); |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 431 | } |
| 432 | |
| 433 | static int parse_flow_nlattrs(const struct nlattr *attr, |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 434 | const struct nlattr *a[], u64 *attrsp, |
| 435 | bool log) |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 436 | { |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 437 | return __parse_flow_nlattrs(attr, a, attrsp, log, false); |
| 438 | } |
| 439 | |
| 440 | static int genev_tun_opt_from_nlattr(const struct nlattr *a, |
| 441 | struct sw_flow_match *match, bool is_mask, |
| 442 | bool log) |
| 443 | { |
| 444 | unsigned long opt_key_offset; |
| 445 | |
| 446 | if (nla_len(a) > sizeof(match->key->tun_opts)) { |
| 447 | OVS_NLERR(log, "Geneve option length err (len %d, max %zu).", |
| 448 | nla_len(a), sizeof(match->key->tun_opts)); |
| 449 | return -EINVAL; |
| 450 | } |
| 451 | |
| 452 | if (nla_len(a) % 4 != 0) { |
| 453 | OVS_NLERR(log, "Geneve opt len %d is not a multiple of 4.", |
| 454 | nla_len(a)); |
| 455 | return -EINVAL; |
| 456 | } |
| 457 | |
| 458 | /* We need to record the length of the options passed |
| 459 | * down, otherwise packets with the same format but |
| 460 | * additional options will be silently matched. |
| 461 | */ |
| 462 | if (!is_mask) { |
| 463 | SW_FLOW_KEY_PUT(match, tun_opts_len, nla_len(a), |
| 464 | false); |
| 465 | } else { |
| 466 | /* This is somewhat unusual because it looks at |
| 467 | * both the key and mask while parsing the |
| 468 | * attributes (and by extension assumes the key |
| 469 | * is parsed first). Normally, we would verify |
| 470 | * that each is the correct length and that the |
| 471 | * attributes line up in the validate function. |
| 472 | * However, that is difficult because this is |
| 473 | * variable length and we won't have the |
| 474 | * information later. |
| 475 | */ |
| 476 | if (match->key->tun_opts_len != nla_len(a)) { |
| 477 | OVS_NLERR(log, "Geneve option len %d != mask len %d", |
| 478 | match->key->tun_opts_len, nla_len(a)); |
| 479 | return -EINVAL; |
| 480 | } |
| 481 | |
| 482 | SW_FLOW_KEY_PUT(match, tun_opts_len, 0xff, true); |
| 483 | } |
| 484 | |
Thomas Graf | d91641d | 2015-01-15 03:53:57 +0100 | [diff] [blame] | 485 | opt_key_offset = TUN_METADATA_OFFSET(nla_len(a)); |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 486 | SW_FLOW_KEY_MEMCPY_OFFSET(match, opt_key_offset, nla_data(a), |
| 487 | nla_len(a), is_mask); |
| 488 | return 0; |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 489 | } |
| 490 | |
Jesse Gross | 982b527 | 2015-09-11 18:38:28 -0700 | [diff] [blame] | 491 | static int vxlan_tun_opt_from_nlattr(const struct nlattr *attr, |
Thomas Graf | 1dd144c | 2015-01-15 03:53:59 +0100 | [diff] [blame] | 492 | struct sw_flow_match *match, bool is_mask, |
| 493 | bool log) |
| 494 | { |
Jesse Gross | 982b527 | 2015-09-11 18:38:28 -0700 | [diff] [blame] | 495 | struct nlattr *a; |
| 496 | int rem; |
Thomas Graf | 1dd144c | 2015-01-15 03:53:59 +0100 | [diff] [blame] | 497 | unsigned long opt_key_offset; |
Thomas Graf | 614732e | 2015-07-21 10:44:06 +0200 | [diff] [blame] | 498 | struct vxlan_metadata opts; |
Thomas Graf | 1dd144c | 2015-01-15 03:53:59 +0100 | [diff] [blame] | 499 | |
| 500 | BUILD_BUG_ON(sizeof(opts) > sizeof(match->key->tun_opts)); |
| 501 | |
Thomas Graf | 1dd144c | 2015-01-15 03:53:59 +0100 | [diff] [blame] | 502 | memset(&opts, 0, sizeof(opts)); |
Jesse Gross | 982b527 | 2015-09-11 18:38:28 -0700 | [diff] [blame] | 503 | nla_for_each_nested(a, attr, rem) { |
| 504 | int type = nla_type(a); |
Thomas Graf | 1dd144c | 2015-01-15 03:53:59 +0100 | [diff] [blame] | 505 | |
Jesse Gross | 982b527 | 2015-09-11 18:38:28 -0700 | [diff] [blame] | 506 | if (type > OVS_VXLAN_EXT_MAX) { |
| 507 | OVS_NLERR(log, "VXLAN extension %d out of range max %d", |
| 508 | type, OVS_VXLAN_EXT_MAX); |
| 509 | return -EINVAL; |
| 510 | } |
| 511 | |
| 512 | if (!check_attr_len(nla_len(a), |
| 513 | ovs_vxlan_ext_key_lens[type].len)) { |
| 514 | OVS_NLERR(log, "VXLAN extension %d has unexpected len %d expected %d", |
| 515 | type, nla_len(a), |
| 516 | ovs_vxlan_ext_key_lens[type].len); |
| 517 | return -EINVAL; |
| 518 | } |
| 519 | |
| 520 | switch (type) { |
| 521 | case OVS_VXLAN_EXT_GBP: |
| 522 | opts.gbp = nla_get_u32(a); |
| 523 | break; |
| 524 | default: |
| 525 | OVS_NLERR(log, "Unknown VXLAN extension attribute %d", |
| 526 | type); |
| 527 | return -EINVAL; |
| 528 | } |
| 529 | } |
| 530 | if (rem) { |
| 531 | OVS_NLERR(log, "VXLAN extension message has %d unknown bytes.", |
| 532 | rem); |
| 533 | return -EINVAL; |
| 534 | } |
Thomas Graf | 1dd144c | 2015-01-15 03:53:59 +0100 | [diff] [blame] | 535 | |
| 536 | if (!is_mask) |
| 537 | SW_FLOW_KEY_PUT(match, tun_opts_len, sizeof(opts), false); |
| 538 | else |
| 539 | SW_FLOW_KEY_PUT(match, tun_opts_len, 0xff, true); |
| 540 | |
| 541 | opt_key_offset = TUN_METADATA_OFFSET(sizeof(opts)); |
| 542 | SW_FLOW_KEY_MEMCPY_OFFSET(match, opt_key_offset, &opts, sizeof(opts), |
| 543 | is_mask); |
| 544 | return 0; |
| 545 | } |
| 546 | |
Jiri Benc | 6b26ba3 | 2015-10-05 13:09:47 +0200 | [diff] [blame] | 547 | static int ip_tun_from_nlattr(const struct nlattr *attr, |
| 548 | struct sw_flow_match *match, bool is_mask, |
| 549 | bool log) |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 550 | { |
Pravin B Shelar | 99e28f1 | 2015-10-20 20:47:46 -0700 | [diff] [blame] | 551 | bool ttl = false, ipv4 = false, ipv6 = false; |
| 552 | __be16 tun_flags = 0; |
| 553 | int opts_type = 0; |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 554 | struct nlattr *a; |
| 555 | int rem; |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 556 | |
| 557 | nla_for_each_nested(a, attr, rem) { |
| 558 | int type = nla_type(a); |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 559 | int err; |
| 560 | |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 561 | if (type > OVS_TUNNEL_KEY_ATTR_MAX) { |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 562 | OVS_NLERR(log, "Tunnel attr %d out of range max %d", |
| 563 | type, OVS_TUNNEL_KEY_ATTR_MAX); |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 564 | return -EINVAL; |
| 565 | } |
| 566 | |
Jesse Gross | 982b527 | 2015-09-11 18:38:28 -0700 | [diff] [blame] | 567 | if (!check_attr_len(nla_len(a), |
| 568 | ovs_tunnel_key_lens[type].len)) { |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 569 | OVS_NLERR(log, "Tunnel attr %d has unexpected len %d expected %d", |
Thomas Graf | 81bfe3c | 2015-01-15 03:53:58 +0100 | [diff] [blame] | 570 | type, nla_len(a), ovs_tunnel_key_lens[type].len); |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 571 | return -EINVAL; |
| 572 | } |
| 573 | |
| 574 | switch (type) { |
| 575 | case OVS_TUNNEL_KEY_ATTR_ID: |
| 576 | SW_FLOW_KEY_PUT(match, tun_key.tun_id, |
| 577 | nla_get_be64(a), is_mask); |
| 578 | tun_flags |= TUNNEL_KEY; |
| 579 | break; |
| 580 | case OVS_TUNNEL_KEY_ATTR_IPV4_SRC: |
Jiri Benc | c1ea5d6 | 2015-08-20 13:56:23 +0200 | [diff] [blame] | 581 | SW_FLOW_KEY_PUT(match, tun_key.u.ipv4.src, |
Jiri Benc | 67b61f6 | 2015-03-29 16:59:26 +0200 | [diff] [blame] | 582 | nla_get_in_addr(a), is_mask); |
Jiri Benc | 6b26ba3 | 2015-10-05 13:09:47 +0200 | [diff] [blame] | 583 | ipv4 = true; |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 584 | break; |
| 585 | case OVS_TUNNEL_KEY_ATTR_IPV4_DST: |
Jiri Benc | c1ea5d6 | 2015-08-20 13:56:23 +0200 | [diff] [blame] | 586 | SW_FLOW_KEY_PUT(match, tun_key.u.ipv4.dst, |
Jiri Benc | 67b61f6 | 2015-03-29 16:59:26 +0200 | [diff] [blame] | 587 | nla_get_in_addr(a), is_mask); |
Jiri Benc | 6b26ba3 | 2015-10-05 13:09:47 +0200 | [diff] [blame] | 588 | ipv4 = true; |
| 589 | break; |
| 590 | case OVS_TUNNEL_KEY_ATTR_IPV6_SRC: |
| 591 | SW_FLOW_KEY_PUT(match, tun_key.u.ipv6.dst, |
| 592 | nla_get_in6_addr(a), is_mask); |
| 593 | ipv6 = true; |
| 594 | break; |
| 595 | case OVS_TUNNEL_KEY_ATTR_IPV6_DST: |
| 596 | SW_FLOW_KEY_PUT(match, tun_key.u.ipv6.dst, |
| 597 | nla_get_in6_addr(a), is_mask); |
| 598 | ipv6 = true; |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 599 | break; |
| 600 | case OVS_TUNNEL_KEY_ATTR_TOS: |
Jiri Benc | 7c383fb | 2015-08-20 13:56:24 +0200 | [diff] [blame] | 601 | SW_FLOW_KEY_PUT(match, tun_key.tos, |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 602 | nla_get_u8(a), is_mask); |
| 603 | break; |
| 604 | case OVS_TUNNEL_KEY_ATTR_TTL: |
Jiri Benc | 7c383fb | 2015-08-20 13:56:24 +0200 | [diff] [blame] | 605 | SW_FLOW_KEY_PUT(match, tun_key.ttl, |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 606 | nla_get_u8(a), is_mask); |
| 607 | ttl = true; |
| 608 | break; |
| 609 | case OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT: |
| 610 | tun_flags |= TUNNEL_DONT_FRAGMENT; |
| 611 | break; |
| 612 | case OVS_TUNNEL_KEY_ATTR_CSUM: |
| 613 | tun_flags |= TUNNEL_CSUM; |
| 614 | break; |
Wenyu Zhang | 8f0aad6 | 2014-11-06 06:51:24 -0800 | [diff] [blame] | 615 | case OVS_TUNNEL_KEY_ATTR_TP_SRC: |
| 616 | SW_FLOW_KEY_PUT(match, tun_key.tp_src, |
| 617 | nla_get_be16(a), is_mask); |
| 618 | break; |
| 619 | case OVS_TUNNEL_KEY_ATTR_TP_DST: |
| 620 | SW_FLOW_KEY_PUT(match, tun_key.tp_dst, |
| 621 | nla_get_be16(a), is_mask); |
| 622 | break; |
Jesse Gross | 67fa034 | 2014-10-03 15:35:30 -0700 | [diff] [blame] | 623 | case OVS_TUNNEL_KEY_ATTR_OAM: |
| 624 | tun_flags |= TUNNEL_OAM; |
| 625 | break; |
Jesse Gross | f579668 | 2014-10-03 15:35:33 -0700 | [diff] [blame] | 626 | case OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS: |
Thomas Graf | 1dd144c | 2015-01-15 03:53:59 +0100 | [diff] [blame] | 627 | if (opts_type) { |
| 628 | OVS_NLERR(log, "Multiple metadata blocks provided"); |
| 629 | return -EINVAL; |
| 630 | } |
| 631 | |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 632 | err = genev_tun_opt_from_nlattr(a, match, is_mask, log); |
| 633 | if (err) |
| 634 | return err; |
| 635 | |
Thomas Graf | 1dd144c | 2015-01-15 03:53:59 +0100 | [diff] [blame] | 636 | tun_flags |= TUNNEL_GENEVE_OPT; |
| 637 | opts_type = type; |
| 638 | break; |
| 639 | case OVS_TUNNEL_KEY_ATTR_VXLAN_OPTS: |
| 640 | if (opts_type) { |
| 641 | OVS_NLERR(log, "Multiple metadata blocks provided"); |
| 642 | return -EINVAL; |
| 643 | } |
| 644 | |
| 645 | err = vxlan_tun_opt_from_nlattr(a, match, is_mask, log); |
| 646 | if (err) |
| 647 | return err; |
| 648 | |
| 649 | tun_flags |= TUNNEL_VXLAN_OPT; |
| 650 | opts_type = type; |
Jesse Gross | f579668 | 2014-10-03 15:35:33 -0700 | [diff] [blame] | 651 | break; |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 652 | default: |
Jiri Benc | 6b26ba3 | 2015-10-05 13:09:47 +0200 | [diff] [blame] | 653 | OVS_NLERR(log, "Unknown IP tunnel attribute %d", |
Jesse Gross | f579668 | 2014-10-03 15:35:33 -0700 | [diff] [blame] | 654 | type); |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 655 | return -EINVAL; |
| 656 | } |
| 657 | } |
| 658 | |
| 659 | SW_FLOW_KEY_PUT(match, tun_key.tun_flags, tun_flags, is_mask); |
Jiri Benc | 00a93ba | 2015-10-05 13:09:46 +0200 | [diff] [blame] | 660 | if (is_mask) |
| 661 | SW_FLOW_KEY_MEMSET_FIELD(match, tun_proto, 0xff, true); |
| 662 | else |
Jiri Benc | 6b26ba3 | 2015-10-05 13:09:47 +0200 | [diff] [blame] | 663 | SW_FLOW_KEY_PUT(match, tun_proto, ipv6 ? AF_INET6 : AF_INET, |
| 664 | false); |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 665 | |
| 666 | if (rem > 0) { |
Jiri Benc | 6b26ba3 | 2015-10-05 13:09:47 +0200 | [diff] [blame] | 667 | OVS_NLERR(log, "IP tunnel attribute has %d unknown bytes.", |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 668 | rem); |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 669 | return -EINVAL; |
| 670 | } |
| 671 | |
Jiri Benc | 6b26ba3 | 2015-10-05 13:09:47 +0200 | [diff] [blame] | 672 | if (ipv4 && ipv6) { |
| 673 | OVS_NLERR(log, "Mixed IPv4 and IPv6 tunnel attributes"); |
| 674 | return -EINVAL; |
| 675 | } |
| 676 | |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 677 | if (!is_mask) { |
Jiri Benc | 6b26ba3 | 2015-10-05 13:09:47 +0200 | [diff] [blame] | 678 | if (!ipv4 && !ipv6) { |
| 679 | OVS_NLERR(log, "IP tunnel dst address not specified"); |
| 680 | return -EINVAL; |
| 681 | } |
| 682 | if (ipv4 && !match->key->tun_key.u.ipv4.dst) { |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 683 | OVS_NLERR(log, "IPv4 tunnel dst address is zero"); |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 684 | return -EINVAL; |
| 685 | } |
Jiri Benc | 6b26ba3 | 2015-10-05 13:09:47 +0200 | [diff] [blame] | 686 | if (ipv6 && ipv6_addr_any(&match->key->tun_key.u.ipv6.dst)) { |
| 687 | OVS_NLERR(log, "IPv6 tunnel dst address is zero"); |
| 688 | return -EINVAL; |
| 689 | } |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 690 | |
| 691 | if (!ttl) { |
Jiri Benc | 6b26ba3 | 2015-10-05 13:09:47 +0200 | [diff] [blame] | 692 | OVS_NLERR(log, "IP tunnel TTL not specified."); |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 693 | return -EINVAL; |
| 694 | } |
| 695 | } |
| 696 | |
Thomas Graf | 1dd144c | 2015-01-15 03:53:59 +0100 | [diff] [blame] | 697 | return opts_type; |
| 698 | } |
| 699 | |
| 700 | static int vxlan_opt_to_nlattr(struct sk_buff *skb, |
| 701 | const void *tun_opts, int swkey_tun_opts_len) |
| 702 | { |
Thomas Graf | 614732e | 2015-07-21 10:44:06 +0200 | [diff] [blame] | 703 | const struct vxlan_metadata *opts = tun_opts; |
Thomas Graf | 1dd144c | 2015-01-15 03:53:59 +0100 | [diff] [blame] | 704 | struct nlattr *nla; |
| 705 | |
| 706 | nla = nla_nest_start(skb, OVS_TUNNEL_KEY_ATTR_VXLAN_OPTS); |
| 707 | if (!nla) |
| 708 | return -EMSGSIZE; |
| 709 | |
| 710 | if (nla_put_u32(skb, OVS_VXLAN_EXT_GBP, opts->gbp) < 0) |
| 711 | return -EMSGSIZE; |
| 712 | |
| 713 | nla_nest_end(skb, nla); |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 714 | return 0; |
| 715 | } |
| 716 | |
Jiri Benc | 6b26ba3 | 2015-10-05 13:09:47 +0200 | [diff] [blame] | 717 | static int __ip_tun_to_nlattr(struct sk_buff *skb, |
| 718 | const struct ip_tunnel_key *output, |
| 719 | const void *tun_opts, int swkey_tun_opts_len, |
| 720 | unsigned short tun_proto) |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 721 | { |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 722 | if (output->tun_flags & TUNNEL_KEY && |
| 723 | nla_put_be64(skb, OVS_TUNNEL_KEY_ATTR_ID, output->tun_id)) |
| 724 | return -EMSGSIZE; |
Jiri Benc | 6b26ba3 | 2015-10-05 13:09:47 +0200 | [diff] [blame] | 725 | switch (tun_proto) { |
| 726 | case AF_INET: |
| 727 | if (output->u.ipv4.src && |
| 728 | nla_put_in_addr(skb, OVS_TUNNEL_KEY_ATTR_IPV4_SRC, |
| 729 | output->u.ipv4.src)) |
| 730 | return -EMSGSIZE; |
| 731 | if (output->u.ipv4.dst && |
| 732 | nla_put_in_addr(skb, OVS_TUNNEL_KEY_ATTR_IPV4_DST, |
| 733 | output->u.ipv4.dst)) |
| 734 | return -EMSGSIZE; |
| 735 | break; |
| 736 | case AF_INET6: |
| 737 | if (!ipv6_addr_any(&output->u.ipv6.src) && |
| 738 | nla_put_in6_addr(skb, OVS_TUNNEL_KEY_ATTR_IPV6_SRC, |
| 739 | &output->u.ipv6.src)) |
| 740 | return -EMSGSIZE; |
| 741 | if (!ipv6_addr_any(&output->u.ipv6.dst) && |
| 742 | nla_put_in6_addr(skb, OVS_TUNNEL_KEY_ATTR_IPV6_DST, |
| 743 | &output->u.ipv6.dst)) |
| 744 | return -EMSGSIZE; |
| 745 | break; |
| 746 | } |
Jiri Benc | 7c383fb | 2015-08-20 13:56:24 +0200 | [diff] [blame] | 747 | if (output->tos && |
| 748 | nla_put_u8(skb, OVS_TUNNEL_KEY_ATTR_TOS, output->tos)) |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 749 | return -EMSGSIZE; |
Jiri Benc | 7c383fb | 2015-08-20 13:56:24 +0200 | [diff] [blame] | 750 | if (nla_put_u8(skb, OVS_TUNNEL_KEY_ATTR_TTL, output->ttl)) |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 751 | return -EMSGSIZE; |
| 752 | if ((output->tun_flags & TUNNEL_DONT_FRAGMENT) && |
Jesse Gross | 67fa034 | 2014-10-03 15:35:30 -0700 | [diff] [blame] | 753 | nla_put_flag(skb, OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT)) |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 754 | return -EMSGSIZE; |
| 755 | if ((output->tun_flags & TUNNEL_CSUM) && |
Jesse Gross | 67fa034 | 2014-10-03 15:35:30 -0700 | [diff] [blame] | 756 | nla_put_flag(skb, OVS_TUNNEL_KEY_ATTR_CSUM)) |
| 757 | return -EMSGSIZE; |
Wenyu Zhang | 8f0aad6 | 2014-11-06 06:51:24 -0800 | [diff] [blame] | 758 | if (output->tp_src && |
| 759 | nla_put_be16(skb, OVS_TUNNEL_KEY_ATTR_TP_SRC, output->tp_src)) |
| 760 | return -EMSGSIZE; |
| 761 | if (output->tp_dst && |
| 762 | nla_put_be16(skb, OVS_TUNNEL_KEY_ATTR_TP_DST, output->tp_dst)) |
| 763 | return -EMSGSIZE; |
Jesse Gross | 67fa034 | 2014-10-03 15:35:30 -0700 | [diff] [blame] | 764 | if ((output->tun_flags & TUNNEL_OAM) && |
| 765 | nla_put_flag(skb, OVS_TUNNEL_KEY_ATTR_OAM)) |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 766 | return -EMSGSIZE; |
Pravin B Shelar | fc4099f | 2015-10-22 18:17:16 -0700 | [diff] [blame] | 767 | if (swkey_tun_opts_len) { |
Thomas Graf | 1dd144c | 2015-01-15 03:53:59 +0100 | [diff] [blame] | 768 | if (output->tun_flags & TUNNEL_GENEVE_OPT && |
| 769 | nla_put(skb, OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS, |
| 770 | swkey_tun_opts_len, tun_opts)) |
| 771 | return -EMSGSIZE; |
| 772 | else if (output->tun_flags & TUNNEL_VXLAN_OPT && |
| 773 | vxlan_opt_to_nlattr(skb, tun_opts, swkey_tun_opts_len)) |
| 774 | return -EMSGSIZE; |
| 775 | } |
Jesse Gross | f579668 | 2014-10-03 15:35:33 -0700 | [diff] [blame] | 776 | |
| 777 | return 0; |
| 778 | } |
| 779 | |
Jiri Benc | 6b26ba3 | 2015-10-05 13:09:47 +0200 | [diff] [blame] | 780 | static int ip_tun_to_nlattr(struct sk_buff *skb, |
| 781 | const struct ip_tunnel_key *output, |
| 782 | const void *tun_opts, int swkey_tun_opts_len, |
| 783 | unsigned short tun_proto) |
Jesse Gross | f579668 | 2014-10-03 15:35:33 -0700 | [diff] [blame] | 784 | { |
| 785 | struct nlattr *nla; |
| 786 | int err; |
| 787 | |
| 788 | nla = nla_nest_start(skb, OVS_KEY_ATTR_TUNNEL); |
| 789 | if (!nla) |
| 790 | return -EMSGSIZE; |
| 791 | |
Jiri Benc | 6b26ba3 | 2015-10-05 13:09:47 +0200 | [diff] [blame] | 792 | err = __ip_tun_to_nlattr(skb, output, tun_opts, swkey_tun_opts_len, |
| 793 | tun_proto); |
Jesse Gross | f579668 | 2014-10-03 15:35:33 -0700 | [diff] [blame] | 794 | if (err) |
| 795 | return err; |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 796 | |
| 797 | nla_nest_end(skb, nla); |
| 798 | return 0; |
| 799 | } |
| 800 | |
Pravin B Shelar | fc4099f | 2015-10-22 18:17:16 -0700 | [diff] [blame] | 801 | int ovs_nla_put_tunnel_info(struct sk_buff *skb, |
| 802 | struct ip_tunnel_info *tun_info) |
Wenyu Zhang | 8f0aad6 | 2014-11-06 06:51:24 -0800 | [diff] [blame] | 803 | { |
David S. Miller | ba3e208 | 2015-10-24 06:54:12 -0700 | [diff] [blame] | 804 | return __ip_tun_to_nlattr(skb, &tun_info->key, |
| 805 | ip_tunnel_info_opts(tun_info), |
| 806 | tun_info->options_len, |
| 807 | ip_tunnel_info_af(tun_info)); |
Wenyu Zhang | 8f0aad6 | 2014-11-06 06:51:24 -0800 | [diff] [blame] | 808 | } |
| 809 | |
Joe Stringer | c2ac667 | 2015-08-26 11:31:52 -0700 | [diff] [blame] | 810 | static int metadata_from_nlattrs(struct net *net, struct sw_flow_match *match, |
| 811 | u64 *attrs, const struct nlattr **a, |
| 812 | bool is_mask, bool log) |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 813 | { |
Andy Zhou | 971427f3 | 2014-09-15 19:37:25 -0700 | [diff] [blame] | 814 | if (*attrs & (1 << OVS_KEY_ATTR_DP_HASH)) { |
| 815 | u32 hash_val = nla_get_u32(a[OVS_KEY_ATTR_DP_HASH]); |
| 816 | |
| 817 | SW_FLOW_KEY_PUT(match, ovs_flow_hash, hash_val, is_mask); |
| 818 | *attrs &= ~(1 << OVS_KEY_ATTR_DP_HASH); |
| 819 | } |
| 820 | |
| 821 | if (*attrs & (1 << OVS_KEY_ATTR_RECIRC_ID)) { |
| 822 | u32 recirc_id = nla_get_u32(a[OVS_KEY_ATTR_RECIRC_ID]); |
| 823 | |
| 824 | SW_FLOW_KEY_PUT(match, recirc_id, recirc_id, is_mask); |
| 825 | *attrs &= ~(1 << OVS_KEY_ATTR_RECIRC_ID); |
| 826 | } |
| 827 | |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 828 | if (*attrs & (1 << OVS_KEY_ATTR_PRIORITY)) { |
| 829 | SW_FLOW_KEY_PUT(match, phy.priority, |
| 830 | nla_get_u32(a[OVS_KEY_ATTR_PRIORITY]), is_mask); |
| 831 | *attrs &= ~(1 << OVS_KEY_ATTR_PRIORITY); |
| 832 | } |
| 833 | |
| 834 | if (*attrs & (1 << OVS_KEY_ATTR_IN_PORT)) { |
| 835 | u32 in_port = nla_get_u32(a[OVS_KEY_ATTR_IN_PORT]); |
| 836 | |
Jesse Gross | 426cda5 | 2014-10-06 05:08:38 -0700 | [diff] [blame] | 837 | if (is_mask) { |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 838 | in_port = 0xffffffff; /* Always exact match in_port. */ |
Jesse Gross | 426cda5 | 2014-10-06 05:08:38 -0700 | [diff] [blame] | 839 | } else if (in_port >= DP_MAX_PORTS) { |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 840 | OVS_NLERR(log, "Port %d exceeds max allowable %d", |
Jesse Gross | 426cda5 | 2014-10-06 05:08:38 -0700 | [diff] [blame] | 841 | in_port, DP_MAX_PORTS); |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 842 | return -EINVAL; |
Jesse Gross | 426cda5 | 2014-10-06 05:08:38 -0700 | [diff] [blame] | 843 | } |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 844 | |
| 845 | SW_FLOW_KEY_PUT(match, phy.in_port, in_port, is_mask); |
| 846 | *attrs &= ~(1 << OVS_KEY_ATTR_IN_PORT); |
| 847 | } else if (!is_mask) { |
| 848 | SW_FLOW_KEY_PUT(match, phy.in_port, DP_MAX_PORTS, is_mask); |
| 849 | } |
| 850 | |
| 851 | if (*attrs & (1 << OVS_KEY_ATTR_SKB_MARK)) { |
| 852 | uint32_t mark = nla_get_u32(a[OVS_KEY_ATTR_SKB_MARK]); |
| 853 | |
| 854 | SW_FLOW_KEY_PUT(match, phy.skb_mark, mark, is_mask); |
| 855 | *attrs &= ~(1 << OVS_KEY_ATTR_SKB_MARK); |
| 856 | } |
| 857 | if (*attrs & (1 << OVS_KEY_ATTR_TUNNEL)) { |
Jiri Benc | 6b26ba3 | 2015-10-05 13:09:47 +0200 | [diff] [blame] | 858 | if (ip_tun_from_nlattr(a[OVS_KEY_ATTR_TUNNEL], match, |
| 859 | is_mask, log) < 0) |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 860 | return -EINVAL; |
| 861 | *attrs &= ~(1 << OVS_KEY_ATTR_TUNNEL); |
| 862 | } |
Joe Stringer | 7f8a436 | 2015-08-26 11:31:48 -0700 | [diff] [blame] | 863 | |
| 864 | if (*attrs & (1 << OVS_KEY_ATTR_CT_STATE) && |
Joe Stringer | c2ac667 | 2015-08-26 11:31:52 -0700 | [diff] [blame] | 865 | ovs_ct_verify(net, OVS_KEY_ATTR_CT_STATE)) { |
Joe Stringer | fbccce5 | 2015-10-06 11:00:00 -0700 | [diff] [blame] | 866 | u32 ct_state = nla_get_u32(a[OVS_KEY_ATTR_CT_STATE]); |
Joe Stringer | 7f8a436 | 2015-08-26 11:31:48 -0700 | [diff] [blame] | 867 | |
Joe Stringer | 9e38471 | 2015-10-19 19:18:57 -0700 | [diff] [blame] | 868 | if (ct_state & ~CT_SUPPORTED_MASK) { |
Joe Stringer | fbccce5 | 2015-10-06 11:00:00 -0700 | [diff] [blame] | 869 | OVS_NLERR(log, "ct_state flags %08x unsupported", |
Joe Stringer | 6f22595 | 2015-10-06 10:59:59 -0700 | [diff] [blame] | 870 | ct_state); |
| 871 | return -EINVAL; |
| 872 | } |
Joe Stringer | 7f8a436 | 2015-08-26 11:31:48 -0700 | [diff] [blame] | 873 | |
| 874 | SW_FLOW_KEY_PUT(match, ct.state, ct_state, is_mask); |
| 875 | *attrs &= ~(1ULL << OVS_KEY_ATTR_CT_STATE); |
| 876 | } |
| 877 | if (*attrs & (1 << OVS_KEY_ATTR_CT_ZONE) && |
Joe Stringer | c2ac667 | 2015-08-26 11:31:52 -0700 | [diff] [blame] | 878 | ovs_ct_verify(net, OVS_KEY_ATTR_CT_ZONE)) { |
Joe Stringer | 7f8a436 | 2015-08-26 11:31:48 -0700 | [diff] [blame] | 879 | u16 ct_zone = nla_get_u16(a[OVS_KEY_ATTR_CT_ZONE]); |
| 880 | |
| 881 | SW_FLOW_KEY_PUT(match, ct.zone, ct_zone, is_mask); |
| 882 | *attrs &= ~(1ULL << OVS_KEY_ATTR_CT_ZONE); |
| 883 | } |
Joe Stringer | 182e304 | 2015-08-26 11:31:49 -0700 | [diff] [blame] | 884 | if (*attrs & (1 << OVS_KEY_ATTR_CT_MARK) && |
Joe Stringer | c2ac667 | 2015-08-26 11:31:52 -0700 | [diff] [blame] | 885 | ovs_ct_verify(net, OVS_KEY_ATTR_CT_MARK)) { |
Joe Stringer | 182e304 | 2015-08-26 11:31:49 -0700 | [diff] [blame] | 886 | u32 mark = nla_get_u32(a[OVS_KEY_ATTR_CT_MARK]); |
| 887 | |
| 888 | SW_FLOW_KEY_PUT(match, ct.mark, mark, is_mask); |
| 889 | *attrs &= ~(1ULL << OVS_KEY_ATTR_CT_MARK); |
| 890 | } |
Joe Stringer | 33db412 | 2015-10-01 15:00:37 -0700 | [diff] [blame] | 891 | if (*attrs & (1 << OVS_KEY_ATTR_CT_LABELS) && |
| 892 | ovs_ct_verify(net, OVS_KEY_ATTR_CT_LABELS)) { |
| 893 | const struct ovs_key_ct_labels *cl; |
Joe Stringer | c2ac667 | 2015-08-26 11:31:52 -0700 | [diff] [blame] | 894 | |
Joe Stringer | 33db412 | 2015-10-01 15:00:37 -0700 | [diff] [blame] | 895 | cl = nla_data(a[OVS_KEY_ATTR_CT_LABELS]); |
| 896 | SW_FLOW_KEY_MEMCPY(match, ct.labels, cl->ct_labels, |
Joe Stringer | c2ac667 | 2015-08-26 11:31:52 -0700 | [diff] [blame] | 897 | sizeof(*cl), is_mask); |
Joe Stringer | 33db412 | 2015-10-01 15:00:37 -0700 | [diff] [blame] | 898 | *attrs &= ~(1ULL << OVS_KEY_ATTR_CT_LABELS); |
Joe Stringer | c2ac667 | 2015-08-26 11:31:52 -0700 | [diff] [blame] | 899 | } |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 900 | return 0; |
| 901 | } |
| 902 | |
Joe Stringer | c2ac667 | 2015-08-26 11:31:52 -0700 | [diff] [blame] | 903 | static int ovs_key_from_nlattrs(struct net *net, struct sw_flow_match *match, |
| 904 | u64 attrs, const struct nlattr **a, |
| 905 | bool is_mask, bool log) |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 906 | { |
| 907 | int err; |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 908 | |
Joe Stringer | c2ac667 | 2015-08-26 11:31:52 -0700 | [diff] [blame] | 909 | err = metadata_from_nlattrs(net, match, &attrs, a, is_mask, log); |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 910 | if (err) |
| 911 | return err; |
| 912 | |
| 913 | if (attrs & (1 << OVS_KEY_ATTR_ETHERNET)) { |
| 914 | const struct ovs_key_ethernet *eth_key; |
| 915 | |
| 916 | eth_key = nla_data(a[OVS_KEY_ATTR_ETHERNET]); |
| 917 | SW_FLOW_KEY_MEMCPY(match, eth.src, |
| 918 | eth_key->eth_src, ETH_ALEN, is_mask); |
| 919 | SW_FLOW_KEY_MEMCPY(match, eth.dst, |
| 920 | eth_key->eth_dst, ETH_ALEN, is_mask); |
| 921 | attrs &= ~(1 << OVS_KEY_ATTR_ETHERNET); |
| 922 | } |
| 923 | |
| 924 | if (attrs & (1 << OVS_KEY_ATTR_VLAN)) { |
| 925 | __be16 tci; |
| 926 | |
| 927 | tci = nla_get_be16(a[OVS_KEY_ATTR_VLAN]); |
| 928 | if (!(tci & htons(VLAN_TAG_PRESENT))) { |
| 929 | if (is_mask) |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 930 | OVS_NLERR(log, "VLAN TCI mask does not have exact match for VLAN_TAG_PRESENT bit."); |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 931 | else |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 932 | OVS_NLERR(log, "VLAN TCI does not have VLAN_TAG_PRESENT bit set."); |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 933 | |
| 934 | return -EINVAL; |
| 935 | } |
| 936 | |
| 937 | SW_FLOW_KEY_PUT(match, eth.tci, tci, is_mask); |
| 938 | attrs &= ~(1 << OVS_KEY_ATTR_VLAN); |
Pravin B Shelar | a85311b | 2014-10-19 12:03:40 -0700 | [diff] [blame] | 939 | } |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 940 | |
| 941 | if (attrs & (1 << OVS_KEY_ATTR_ETHERTYPE)) { |
| 942 | __be16 eth_type; |
| 943 | |
| 944 | eth_type = nla_get_be16(a[OVS_KEY_ATTR_ETHERTYPE]); |
| 945 | if (is_mask) { |
| 946 | /* Always exact match EtherType. */ |
| 947 | eth_type = htons(0xffff); |
Alexander Duyck | 6713fc9 | 2015-05-04 14:34:05 -0700 | [diff] [blame] | 948 | } else if (!eth_proto_is_802_3(eth_type)) { |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 949 | OVS_NLERR(log, "EtherType %x is less than min %x", |
| 950 | ntohs(eth_type), ETH_P_802_3_MIN); |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 951 | return -EINVAL; |
| 952 | } |
| 953 | |
| 954 | SW_FLOW_KEY_PUT(match, eth.type, eth_type, is_mask); |
| 955 | attrs &= ~(1 << OVS_KEY_ATTR_ETHERTYPE); |
| 956 | } else if (!is_mask) { |
| 957 | SW_FLOW_KEY_PUT(match, eth.type, htons(ETH_P_802_2), is_mask); |
| 958 | } |
| 959 | |
| 960 | if (attrs & (1 << OVS_KEY_ATTR_IPV4)) { |
| 961 | const struct ovs_key_ipv4 *ipv4_key; |
| 962 | |
| 963 | ipv4_key = nla_data(a[OVS_KEY_ATTR_IPV4]); |
| 964 | if (!is_mask && ipv4_key->ipv4_frag > OVS_FRAG_TYPE_MAX) { |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 965 | OVS_NLERR(log, "IPv4 frag type %d is out of range max %d", |
| 966 | ipv4_key->ipv4_frag, OVS_FRAG_TYPE_MAX); |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 967 | return -EINVAL; |
| 968 | } |
| 969 | SW_FLOW_KEY_PUT(match, ip.proto, |
| 970 | ipv4_key->ipv4_proto, is_mask); |
| 971 | SW_FLOW_KEY_PUT(match, ip.tos, |
| 972 | ipv4_key->ipv4_tos, is_mask); |
| 973 | SW_FLOW_KEY_PUT(match, ip.ttl, |
| 974 | ipv4_key->ipv4_ttl, is_mask); |
| 975 | SW_FLOW_KEY_PUT(match, ip.frag, |
| 976 | ipv4_key->ipv4_frag, is_mask); |
| 977 | SW_FLOW_KEY_PUT(match, ipv4.addr.src, |
| 978 | ipv4_key->ipv4_src, is_mask); |
| 979 | SW_FLOW_KEY_PUT(match, ipv4.addr.dst, |
| 980 | ipv4_key->ipv4_dst, is_mask); |
| 981 | attrs &= ~(1 << OVS_KEY_ATTR_IPV4); |
| 982 | } |
| 983 | |
| 984 | if (attrs & (1 << OVS_KEY_ATTR_IPV6)) { |
| 985 | const struct ovs_key_ipv6 *ipv6_key; |
| 986 | |
| 987 | ipv6_key = nla_data(a[OVS_KEY_ATTR_IPV6]); |
| 988 | if (!is_mask && ipv6_key->ipv6_frag > OVS_FRAG_TYPE_MAX) { |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 989 | OVS_NLERR(log, "IPv6 frag type %d is out of range max %d", |
| 990 | ipv6_key->ipv6_frag, OVS_FRAG_TYPE_MAX); |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 991 | return -EINVAL; |
| 992 | } |
Jarno Rajahalme | fecaef8 | 2014-11-11 14:36:30 -0800 | [diff] [blame] | 993 | |
Joe Stringer | d3052bb | 2014-11-19 13:54:49 -0800 | [diff] [blame] | 994 | if (!is_mask && ipv6_key->ipv6_label & htonl(0xFFF00000)) { |
David S. Miller | 1459143 | 2014-11-21 22:28:24 -0500 | [diff] [blame] | 995 | OVS_NLERR(log, "IPv6 flow label %x is out of range (max=%x).\n", |
Jarno Rajahalme | fecaef8 | 2014-11-11 14:36:30 -0800 | [diff] [blame] | 996 | ntohl(ipv6_key->ipv6_label), (1 << 20) - 1); |
| 997 | return -EINVAL; |
| 998 | } |
| 999 | |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1000 | SW_FLOW_KEY_PUT(match, ipv6.label, |
| 1001 | ipv6_key->ipv6_label, is_mask); |
| 1002 | SW_FLOW_KEY_PUT(match, ip.proto, |
| 1003 | ipv6_key->ipv6_proto, is_mask); |
| 1004 | SW_FLOW_KEY_PUT(match, ip.tos, |
| 1005 | ipv6_key->ipv6_tclass, is_mask); |
| 1006 | SW_FLOW_KEY_PUT(match, ip.ttl, |
| 1007 | ipv6_key->ipv6_hlimit, is_mask); |
| 1008 | SW_FLOW_KEY_PUT(match, ip.frag, |
| 1009 | ipv6_key->ipv6_frag, is_mask); |
| 1010 | SW_FLOW_KEY_MEMCPY(match, ipv6.addr.src, |
| 1011 | ipv6_key->ipv6_src, |
| 1012 | sizeof(match->key->ipv6.addr.src), |
| 1013 | is_mask); |
| 1014 | SW_FLOW_KEY_MEMCPY(match, ipv6.addr.dst, |
| 1015 | ipv6_key->ipv6_dst, |
| 1016 | sizeof(match->key->ipv6.addr.dst), |
| 1017 | is_mask); |
| 1018 | |
| 1019 | attrs &= ~(1 << OVS_KEY_ATTR_IPV6); |
| 1020 | } |
| 1021 | |
| 1022 | if (attrs & (1 << OVS_KEY_ATTR_ARP)) { |
| 1023 | const struct ovs_key_arp *arp_key; |
| 1024 | |
| 1025 | arp_key = nla_data(a[OVS_KEY_ATTR_ARP]); |
| 1026 | if (!is_mask && (arp_key->arp_op & htons(0xff00))) { |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 1027 | OVS_NLERR(log, "Unknown ARP opcode (opcode=%d).", |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1028 | arp_key->arp_op); |
| 1029 | return -EINVAL; |
| 1030 | } |
| 1031 | |
| 1032 | SW_FLOW_KEY_PUT(match, ipv4.addr.src, |
| 1033 | arp_key->arp_sip, is_mask); |
| 1034 | SW_FLOW_KEY_PUT(match, ipv4.addr.dst, |
| 1035 | arp_key->arp_tip, is_mask); |
| 1036 | SW_FLOW_KEY_PUT(match, ip.proto, |
| 1037 | ntohs(arp_key->arp_op), is_mask); |
| 1038 | SW_FLOW_KEY_MEMCPY(match, ipv4.arp.sha, |
| 1039 | arp_key->arp_sha, ETH_ALEN, is_mask); |
| 1040 | SW_FLOW_KEY_MEMCPY(match, ipv4.arp.tha, |
| 1041 | arp_key->arp_tha, ETH_ALEN, is_mask); |
| 1042 | |
| 1043 | attrs &= ~(1 << OVS_KEY_ATTR_ARP); |
| 1044 | } |
| 1045 | |
Simon Horman | 25cd9ba | 2014-10-06 05:05:13 -0700 | [diff] [blame] | 1046 | if (attrs & (1 << OVS_KEY_ATTR_MPLS)) { |
| 1047 | const struct ovs_key_mpls *mpls_key; |
| 1048 | |
| 1049 | mpls_key = nla_data(a[OVS_KEY_ATTR_MPLS]); |
| 1050 | SW_FLOW_KEY_PUT(match, mpls.top_lse, |
| 1051 | mpls_key->mpls_lse, is_mask); |
| 1052 | |
| 1053 | attrs &= ~(1 << OVS_KEY_ATTR_MPLS); |
| 1054 | } |
| 1055 | |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1056 | if (attrs & (1 << OVS_KEY_ATTR_TCP)) { |
| 1057 | const struct ovs_key_tcp *tcp_key; |
| 1058 | |
| 1059 | tcp_key = nla_data(a[OVS_KEY_ATTR_TCP]); |
Jarno Rajahalme | 1139e24 | 2014-05-05 09:54:49 -0700 | [diff] [blame] | 1060 | SW_FLOW_KEY_PUT(match, tp.src, tcp_key->tcp_src, is_mask); |
| 1061 | SW_FLOW_KEY_PUT(match, tp.dst, tcp_key->tcp_dst, is_mask); |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1062 | attrs &= ~(1 << OVS_KEY_ATTR_TCP); |
| 1063 | } |
| 1064 | |
Jarno Rajahalme | 5eb26b1 | 2013-10-23 01:44:59 -0700 | [diff] [blame] | 1065 | if (attrs & (1 << OVS_KEY_ATTR_TCP_FLAGS)) { |
Joe Stringer | 1b760fb | 2014-09-07 22:11:08 -0700 | [diff] [blame] | 1066 | SW_FLOW_KEY_PUT(match, tp.flags, |
| 1067 | nla_get_be16(a[OVS_KEY_ATTR_TCP_FLAGS]), |
| 1068 | is_mask); |
Jarno Rajahalme | 5eb26b1 | 2013-10-23 01:44:59 -0700 | [diff] [blame] | 1069 | attrs &= ~(1 << OVS_KEY_ATTR_TCP_FLAGS); |
| 1070 | } |
| 1071 | |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1072 | if (attrs & (1 << OVS_KEY_ATTR_UDP)) { |
| 1073 | const struct ovs_key_udp *udp_key; |
| 1074 | |
| 1075 | udp_key = nla_data(a[OVS_KEY_ATTR_UDP]); |
Jarno Rajahalme | 1139e24 | 2014-05-05 09:54:49 -0700 | [diff] [blame] | 1076 | SW_FLOW_KEY_PUT(match, tp.src, udp_key->udp_src, is_mask); |
| 1077 | SW_FLOW_KEY_PUT(match, tp.dst, udp_key->udp_dst, is_mask); |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1078 | attrs &= ~(1 << OVS_KEY_ATTR_UDP); |
| 1079 | } |
| 1080 | |
| 1081 | if (attrs & (1 << OVS_KEY_ATTR_SCTP)) { |
| 1082 | const struct ovs_key_sctp *sctp_key; |
| 1083 | |
| 1084 | sctp_key = nla_data(a[OVS_KEY_ATTR_SCTP]); |
Jarno Rajahalme | 1139e24 | 2014-05-05 09:54:49 -0700 | [diff] [blame] | 1085 | SW_FLOW_KEY_PUT(match, tp.src, sctp_key->sctp_src, is_mask); |
| 1086 | SW_FLOW_KEY_PUT(match, tp.dst, sctp_key->sctp_dst, is_mask); |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1087 | attrs &= ~(1 << OVS_KEY_ATTR_SCTP); |
| 1088 | } |
| 1089 | |
| 1090 | if (attrs & (1 << OVS_KEY_ATTR_ICMP)) { |
| 1091 | const struct ovs_key_icmp *icmp_key; |
| 1092 | |
| 1093 | icmp_key = nla_data(a[OVS_KEY_ATTR_ICMP]); |
Jarno Rajahalme | 1139e24 | 2014-05-05 09:54:49 -0700 | [diff] [blame] | 1094 | SW_FLOW_KEY_PUT(match, tp.src, |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1095 | htons(icmp_key->icmp_type), is_mask); |
Jarno Rajahalme | 1139e24 | 2014-05-05 09:54:49 -0700 | [diff] [blame] | 1096 | SW_FLOW_KEY_PUT(match, tp.dst, |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1097 | htons(icmp_key->icmp_code), is_mask); |
| 1098 | attrs &= ~(1 << OVS_KEY_ATTR_ICMP); |
| 1099 | } |
| 1100 | |
| 1101 | if (attrs & (1 << OVS_KEY_ATTR_ICMPV6)) { |
| 1102 | const struct ovs_key_icmpv6 *icmpv6_key; |
| 1103 | |
| 1104 | icmpv6_key = nla_data(a[OVS_KEY_ATTR_ICMPV6]); |
Jarno Rajahalme | 1139e24 | 2014-05-05 09:54:49 -0700 | [diff] [blame] | 1105 | SW_FLOW_KEY_PUT(match, tp.src, |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1106 | htons(icmpv6_key->icmpv6_type), is_mask); |
Jarno Rajahalme | 1139e24 | 2014-05-05 09:54:49 -0700 | [diff] [blame] | 1107 | SW_FLOW_KEY_PUT(match, tp.dst, |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1108 | htons(icmpv6_key->icmpv6_code), is_mask); |
| 1109 | attrs &= ~(1 << OVS_KEY_ATTR_ICMPV6); |
| 1110 | } |
| 1111 | |
| 1112 | if (attrs & (1 << OVS_KEY_ATTR_ND)) { |
| 1113 | const struct ovs_key_nd *nd_key; |
| 1114 | |
| 1115 | nd_key = nla_data(a[OVS_KEY_ATTR_ND]); |
| 1116 | SW_FLOW_KEY_MEMCPY(match, ipv6.nd.target, |
| 1117 | nd_key->nd_target, |
| 1118 | sizeof(match->key->ipv6.nd.target), |
| 1119 | is_mask); |
| 1120 | SW_FLOW_KEY_MEMCPY(match, ipv6.nd.sll, |
| 1121 | nd_key->nd_sll, ETH_ALEN, is_mask); |
| 1122 | SW_FLOW_KEY_MEMCPY(match, ipv6.nd.tll, |
| 1123 | nd_key->nd_tll, ETH_ALEN, is_mask); |
| 1124 | attrs &= ~(1 << OVS_KEY_ATTR_ND); |
| 1125 | } |
| 1126 | |
Jesse Gross | 426cda5 | 2014-10-06 05:08:38 -0700 | [diff] [blame] | 1127 | if (attrs != 0) { |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 1128 | OVS_NLERR(log, "Unknown key attributes %llx", |
Jesse Gross | 426cda5 | 2014-10-06 05:08:38 -0700 | [diff] [blame] | 1129 | (unsigned long long)attrs); |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1130 | return -EINVAL; |
Jesse Gross | 426cda5 | 2014-10-06 05:08:38 -0700 | [diff] [blame] | 1131 | } |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1132 | |
| 1133 | return 0; |
| 1134 | } |
| 1135 | |
Thomas Graf | 81bfe3c | 2015-01-15 03:53:58 +0100 | [diff] [blame] | 1136 | static void nlattr_set(struct nlattr *attr, u8 val, |
| 1137 | const struct ovs_len_tbl *tbl) |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1138 | { |
Pravin B Shelar | f47de06 | 2014-10-16 21:55:45 -0700 | [diff] [blame] | 1139 | struct nlattr *nla; |
| 1140 | int rem; |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1141 | |
Pravin B Shelar | f47de06 | 2014-10-16 21:55:45 -0700 | [diff] [blame] | 1142 | /* The nlattr stream should already have been validated */ |
| 1143 | nla_for_each_nested(nla, attr, rem) { |
Jesse Gross | 982b527 | 2015-09-11 18:38:28 -0700 | [diff] [blame] | 1144 | if (tbl[nla_type(nla)].len == OVS_ATTR_NESTED) { |
| 1145 | if (tbl[nla_type(nla)].next) |
| 1146 | tbl = tbl[nla_type(nla)].next; |
| 1147 | nlattr_set(nla, val, tbl); |
| 1148 | } else { |
Pravin B Shelar | f47de06 | 2014-10-16 21:55:45 -0700 | [diff] [blame] | 1149 | memset(nla_data(nla), val, nla_len(nla)); |
Jesse Gross | 982b527 | 2015-09-11 18:38:28 -0700 | [diff] [blame] | 1150 | } |
Joe Stringer | 9e38471 | 2015-10-19 19:18:57 -0700 | [diff] [blame] | 1151 | |
| 1152 | if (nla_type(nla) == OVS_KEY_ATTR_CT_STATE) |
| 1153 | *(u32 *)nla_data(nla) &= CT_SUPPORTED_MASK; |
Pravin B Shelar | f47de06 | 2014-10-16 21:55:45 -0700 | [diff] [blame] | 1154 | } |
| 1155 | } |
| 1156 | |
| 1157 | static void mask_set_nlattr(struct nlattr *attr, u8 val) |
| 1158 | { |
Thomas Graf | 81bfe3c | 2015-01-15 03:53:58 +0100 | [diff] [blame] | 1159 | nlattr_set(attr, val, ovs_key_lens); |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1160 | } |
| 1161 | |
| 1162 | /** |
| 1163 | * ovs_nla_get_match - parses Netlink attributes into a flow key and |
| 1164 | * mask. In case the 'mask' is NULL, the flow is treated as exact match |
| 1165 | * flow. Otherwise, it is treated as a wildcarded flow, except the mask |
| 1166 | * does not include any don't care bit. |
Joe Stringer | c2ac667 | 2015-08-26 11:31:52 -0700 | [diff] [blame] | 1167 | * @net: Used to determine per-namespace field support. |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1168 | * @match: receives the extracted flow match information. |
| 1169 | * @key: Netlink attribute holding nested %OVS_KEY_ATTR_* Netlink attribute |
| 1170 | * sequence. The fields should of the packet that triggered the creation |
| 1171 | * of this flow. |
| 1172 | * @mask: Optional. Netlink attribute holding nested %OVS_KEY_ATTR_* Netlink |
| 1173 | * attribute specifies the mask field of the wildcarded flow. |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 1174 | * @log: Boolean to allow kernel error logging. Normally true, but when |
| 1175 | * probing for feature compatibility this should be passed in as false to |
| 1176 | * suppress unnecessary error logging. |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1177 | */ |
Joe Stringer | c2ac667 | 2015-08-26 11:31:52 -0700 | [diff] [blame] | 1178 | int ovs_nla_get_match(struct net *net, struct sw_flow_match *match, |
Pravin B Shelar | a85311b | 2014-10-19 12:03:40 -0700 | [diff] [blame] | 1179 | const struct nlattr *nla_key, |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 1180 | const struct nlattr *nla_mask, |
| 1181 | bool log) |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1182 | { |
| 1183 | const struct nlattr *a[OVS_KEY_ATTR_MAX + 1]; |
| 1184 | const struct nlattr *encap; |
Pravin B Shelar | f47de06 | 2014-10-16 21:55:45 -0700 | [diff] [blame] | 1185 | struct nlattr *newmask = NULL; |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1186 | u64 key_attrs = 0; |
| 1187 | u64 mask_attrs = 0; |
| 1188 | bool encap_valid = false; |
| 1189 | int err; |
| 1190 | |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 1191 | err = parse_flow_nlattrs(nla_key, a, &key_attrs, log); |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1192 | if (err) |
| 1193 | return err; |
| 1194 | |
| 1195 | if ((key_attrs & (1 << OVS_KEY_ATTR_ETHERNET)) && |
| 1196 | (key_attrs & (1 << OVS_KEY_ATTR_ETHERTYPE)) && |
| 1197 | (nla_get_be16(a[OVS_KEY_ATTR_ETHERTYPE]) == htons(ETH_P_8021Q))) { |
| 1198 | __be16 tci; |
| 1199 | |
| 1200 | if (!((key_attrs & (1 << OVS_KEY_ATTR_VLAN)) && |
| 1201 | (key_attrs & (1 << OVS_KEY_ATTR_ENCAP)))) { |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 1202 | OVS_NLERR(log, "Invalid Vlan frame."); |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1203 | return -EINVAL; |
| 1204 | } |
| 1205 | |
| 1206 | key_attrs &= ~(1 << OVS_KEY_ATTR_ETHERTYPE); |
| 1207 | tci = nla_get_be16(a[OVS_KEY_ATTR_VLAN]); |
| 1208 | encap = a[OVS_KEY_ATTR_ENCAP]; |
| 1209 | key_attrs &= ~(1 << OVS_KEY_ATTR_ENCAP); |
| 1210 | encap_valid = true; |
| 1211 | |
| 1212 | if (tci & htons(VLAN_TAG_PRESENT)) { |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 1213 | err = parse_flow_nlattrs(encap, a, &key_attrs, log); |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1214 | if (err) |
| 1215 | return err; |
| 1216 | } else if (!tci) { |
| 1217 | /* Corner case for truncated 802.1Q header. */ |
| 1218 | if (nla_len(encap)) { |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 1219 | OVS_NLERR(log, "Truncated 802.1Q header has non-zero encap attribute."); |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1220 | return -EINVAL; |
| 1221 | } |
| 1222 | } else { |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 1223 | OVS_NLERR(log, "Encap attr is set for non-VLAN frame"); |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1224 | return -EINVAL; |
| 1225 | } |
| 1226 | } |
| 1227 | |
Joe Stringer | c2ac667 | 2015-08-26 11:31:52 -0700 | [diff] [blame] | 1228 | err = ovs_key_from_nlattrs(net, match, key_attrs, a, false, log); |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1229 | if (err) |
| 1230 | return err; |
| 1231 | |
Pravin B Shelar | a85311b | 2014-10-19 12:03:40 -0700 | [diff] [blame] | 1232 | if (match->mask) { |
| 1233 | if (!nla_mask) { |
| 1234 | /* Create an exact match mask. We need to set to 0xff |
| 1235 | * all the 'match->mask' fields that have been touched |
| 1236 | * in 'match->key'. We cannot simply memset |
| 1237 | * 'match->mask', because padding bytes and fields not |
| 1238 | * specified in 'match->key' should be left to 0. |
| 1239 | * Instead, we use a stream of netlink attributes, |
| 1240 | * copied from 'key' and set to 0xff. |
| 1241 | * ovs_key_from_nlattrs() will take care of filling |
| 1242 | * 'match->mask' appropriately. |
| 1243 | */ |
| 1244 | newmask = kmemdup(nla_key, |
| 1245 | nla_total_size(nla_len(nla_key)), |
| 1246 | GFP_KERNEL); |
| 1247 | if (!newmask) |
| 1248 | return -ENOMEM; |
Pravin B Shelar | f47de06 | 2014-10-16 21:55:45 -0700 | [diff] [blame] | 1249 | |
Pravin B Shelar | a85311b | 2014-10-19 12:03:40 -0700 | [diff] [blame] | 1250 | mask_set_nlattr(newmask, 0xff); |
Pravin B Shelar | f47de06 | 2014-10-16 21:55:45 -0700 | [diff] [blame] | 1251 | |
Pravin B Shelar | a85311b | 2014-10-19 12:03:40 -0700 | [diff] [blame] | 1252 | /* The userspace does not send tunnel attributes that |
| 1253 | * are 0, but we should not wildcard them nonetheless. |
| 1254 | */ |
Jiri Benc | 00a93ba | 2015-10-05 13:09:46 +0200 | [diff] [blame] | 1255 | if (match->key->tun_proto) |
Pravin B Shelar | a85311b | 2014-10-19 12:03:40 -0700 | [diff] [blame] | 1256 | SW_FLOW_KEY_MEMSET_FIELD(match, tun_key, |
| 1257 | 0xff, true); |
Pravin B Shelar | f47de06 | 2014-10-16 21:55:45 -0700 | [diff] [blame] | 1258 | |
Pravin B Shelar | a85311b | 2014-10-19 12:03:40 -0700 | [diff] [blame] | 1259 | nla_mask = newmask; |
| 1260 | } |
Pravin B Shelar | f47de06 | 2014-10-16 21:55:45 -0700 | [diff] [blame] | 1261 | |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 1262 | err = parse_flow_mask_nlattrs(nla_mask, a, &mask_attrs, log); |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1263 | if (err) |
Pravin B Shelar | f47de06 | 2014-10-16 21:55:45 -0700 | [diff] [blame] | 1264 | goto free_newmask; |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1265 | |
Pravin B Shelar | a85311b | 2014-10-19 12:03:40 -0700 | [diff] [blame] | 1266 | /* Always match on tci. */ |
| 1267 | SW_FLOW_KEY_PUT(match, eth.tci, htons(0xffff), true); |
| 1268 | |
Pravin B Shelar | f47de06 | 2014-10-16 21:55:45 -0700 | [diff] [blame] | 1269 | if (mask_attrs & 1 << OVS_KEY_ATTR_ENCAP) { |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1270 | __be16 eth_type = 0; |
| 1271 | __be16 tci = 0; |
| 1272 | |
| 1273 | if (!encap_valid) { |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 1274 | OVS_NLERR(log, "Encap mask attribute is set for non-VLAN frame."); |
Pravin B Shelar | f47de06 | 2014-10-16 21:55:45 -0700 | [diff] [blame] | 1275 | err = -EINVAL; |
| 1276 | goto free_newmask; |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1277 | } |
| 1278 | |
| 1279 | mask_attrs &= ~(1 << OVS_KEY_ATTR_ENCAP); |
| 1280 | if (a[OVS_KEY_ATTR_ETHERTYPE]) |
| 1281 | eth_type = nla_get_be16(a[OVS_KEY_ATTR_ETHERTYPE]); |
| 1282 | |
| 1283 | if (eth_type == htons(0xffff)) { |
| 1284 | mask_attrs &= ~(1 << OVS_KEY_ATTR_ETHERTYPE); |
| 1285 | encap = a[OVS_KEY_ATTR_ENCAP]; |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 1286 | err = parse_flow_mask_nlattrs(encap, a, |
| 1287 | &mask_attrs, log); |
Pravin B Shelar | f47de06 | 2014-10-16 21:55:45 -0700 | [diff] [blame] | 1288 | if (err) |
| 1289 | goto free_newmask; |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1290 | } else { |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 1291 | OVS_NLERR(log, "VLAN frames must have an exact match on the TPID (mask=%x).", |
| 1292 | ntohs(eth_type)); |
Pravin B Shelar | f47de06 | 2014-10-16 21:55:45 -0700 | [diff] [blame] | 1293 | err = -EINVAL; |
| 1294 | goto free_newmask; |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1295 | } |
| 1296 | |
| 1297 | if (a[OVS_KEY_ATTR_VLAN]) |
| 1298 | tci = nla_get_be16(a[OVS_KEY_ATTR_VLAN]); |
| 1299 | |
| 1300 | if (!(tci & htons(VLAN_TAG_PRESENT))) { |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 1301 | OVS_NLERR(log, "VLAN tag present bit must have an exact match (tci_mask=%x).", |
| 1302 | ntohs(tci)); |
Pravin B Shelar | f47de06 | 2014-10-16 21:55:45 -0700 | [diff] [blame] | 1303 | err = -EINVAL; |
| 1304 | goto free_newmask; |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1305 | } |
| 1306 | } |
| 1307 | |
Joe Stringer | c2ac667 | 2015-08-26 11:31:52 -0700 | [diff] [blame] | 1308 | err = ovs_key_from_nlattrs(net, match, mask_attrs, a, true, |
| 1309 | log); |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1310 | if (err) |
Pravin B Shelar | f47de06 | 2014-10-16 21:55:45 -0700 | [diff] [blame] | 1311 | goto free_newmask; |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1312 | } |
| 1313 | |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 1314 | if (!match_validate(match, key_attrs, mask_attrs, log)) |
Pravin B Shelar | f47de06 | 2014-10-16 21:55:45 -0700 | [diff] [blame] | 1315 | err = -EINVAL; |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1316 | |
Pravin B Shelar | f47de06 | 2014-10-16 21:55:45 -0700 | [diff] [blame] | 1317 | free_newmask: |
| 1318 | kfree(newmask); |
| 1319 | return err; |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1320 | } |
| 1321 | |
Joe Stringer | 74ed7ab | 2015-01-21 16:42:52 -0800 | [diff] [blame] | 1322 | static size_t get_ufid_len(const struct nlattr *attr, bool log) |
| 1323 | { |
| 1324 | size_t len; |
| 1325 | |
| 1326 | if (!attr) |
| 1327 | return 0; |
| 1328 | |
| 1329 | len = nla_len(attr); |
| 1330 | if (len < 1 || len > MAX_UFID_LENGTH) { |
| 1331 | OVS_NLERR(log, "ufid size %u bytes exceeds the range (1, %d)", |
| 1332 | nla_len(attr), MAX_UFID_LENGTH); |
| 1333 | return 0; |
| 1334 | } |
| 1335 | |
| 1336 | return len; |
| 1337 | } |
| 1338 | |
| 1339 | /* Initializes 'flow->ufid', returning true if 'attr' contains a valid UFID, |
| 1340 | * or false otherwise. |
| 1341 | */ |
| 1342 | bool ovs_nla_get_ufid(struct sw_flow_id *sfid, const struct nlattr *attr, |
| 1343 | bool log) |
| 1344 | { |
| 1345 | sfid->ufid_len = get_ufid_len(attr, log); |
| 1346 | if (sfid->ufid_len) |
| 1347 | memcpy(sfid->ufid, nla_data(attr), sfid->ufid_len); |
| 1348 | |
| 1349 | return sfid->ufid_len; |
| 1350 | } |
| 1351 | |
| 1352 | int ovs_nla_get_identifier(struct sw_flow_id *sfid, const struct nlattr *ufid, |
| 1353 | const struct sw_flow_key *key, bool log) |
| 1354 | { |
| 1355 | struct sw_flow_key *new_key; |
| 1356 | |
| 1357 | if (ovs_nla_get_ufid(sfid, ufid, log)) |
| 1358 | return 0; |
| 1359 | |
| 1360 | /* If UFID was not provided, use unmasked key. */ |
| 1361 | new_key = kmalloc(sizeof(*new_key), GFP_KERNEL); |
| 1362 | if (!new_key) |
| 1363 | return -ENOMEM; |
| 1364 | memcpy(new_key, key, sizeof(*key)); |
| 1365 | sfid->unmasked_key = new_key; |
| 1366 | |
| 1367 | return 0; |
| 1368 | } |
| 1369 | |
| 1370 | u32 ovs_nla_get_ufid_flags(const struct nlattr *attr) |
| 1371 | { |
| 1372 | return attr ? nla_get_u32(attr) : 0; |
| 1373 | } |
| 1374 | |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1375 | /** |
| 1376 | * ovs_nla_get_flow_metadata - parses Netlink attributes into a flow key. |
Pravin B Shelar | 83c8df2 | 2014-09-15 19:20:31 -0700 | [diff] [blame] | 1377 | * @key: Receives extracted in_port, priority, tun_key and skb_mark. |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1378 | * @attr: Netlink attribute holding nested %OVS_KEY_ATTR_* Netlink attribute |
| 1379 | * sequence. |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 1380 | * @log: Boolean to allow kernel error logging. Normally true, but when |
| 1381 | * probing for feature compatibility this should be passed in as false to |
| 1382 | * suppress unnecessary error logging. |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1383 | * |
| 1384 | * This parses a series of Netlink attributes that form a flow key, which must |
| 1385 | * take the same form accepted by flow_from_nlattrs(), but only enough of it to |
| 1386 | * get the metadata, that is, the parts of the flow key that cannot be |
| 1387 | * extracted from the packet itself. |
| 1388 | */ |
| 1389 | |
Joe Stringer | c2ac667 | 2015-08-26 11:31:52 -0700 | [diff] [blame] | 1390 | int ovs_nla_get_flow_metadata(struct net *net, const struct nlattr *attr, |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 1391 | struct sw_flow_key *key, |
| 1392 | bool log) |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1393 | { |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1394 | const struct nlattr *a[OVS_KEY_ATTR_MAX + 1]; |
Pravin B Shelar | 83c8df2 | 2014-09-15 19:20:31 -0700 | [diff] [blame] | 1395 | struct sw_flow_match match; |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1396 | u64 attrs = 0; |
| 1397 | int err; |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1398 | |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 1399 | err = parse_flow_nlattrs(attr, a, &attrs, log); |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1400 | if (err) |
| 1401 | return -EINVAL; |
| 1402 | |
| 1403 | memset(&match, 0, sizeof(match)); |
Pravin B Shelar | 83c8df2 | 2014-09-15 19:20:31 -0700 | [diff] [blame] | 1404 | match.key = key; |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1405 | |
Joe Stringer | 7f8a436 | 2015-08-26 11:31:48 -0700 | [diff] [blame] | 1406 | memset(&key->ct, 0, sizeof(key->ct)); |
Pravin B Shelar | 83c8df2 | 2014-09-15 19:20:31 -0700 | [diff] [blame] | 1407 | key->phy.in_port = DP_MAX_PORTS; |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1408 | |
Joe Stringer | c2ac667 | 2015-08-26 11:31:52 -0700 | [diff] [blame] | 1409 | return metadata_from_nlattrs(net, &match, &attrs, a, false, log); |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1410 | } |
| 1411 | |
Joe Stringer | 5b4237b | 2015-01-21 16:42:48 -0800 | [diff] [blame] | 1412 | static int __ovs_nla_put_key(const struct sw_flow_key *swkey, |
| 1413 | const struct sw_flow_key *output, bool is_mask, |
| 1414 | struct sk_buff *skb) |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1415 | { |
| 1416 | struct ovs_key_ethernet *eth_key; |
| 1417 | struct nlattr *nla, *encap; |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1418 | |
Andy Zhou | 971427f3 | 2014-09-15 19:37:25 -0700 | [diff] [blame] | 1419 | if (nla_put_u32(skb, OVS_KEY_ATTR_RECIRC_ID, output->recirc_id)) |
| 1420 | goto nla_put_failure; |
| 1421 | |
| 1422 | if (nla_put_u32(skb, OVS_KEY_ATTR_DP_HASH, output->ovs_flow_hash)) |
| 1423 | goto nla_put_failure; |
| 1424 | |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1425 | if (nla_put_u32(skb, OVS_KEY_ATTR_PRIORITY, output->phy.priority)) |
| 1426 | goto nla_put_failure; |
| 1427 | |
Jiri Benc | 00a93ba | 2015-10-05 13:09:46 +0200 | [diff] [blame] | 1428 | if ((swkey->tun_proto || is_mask)) { |
Thomas Graf | d91641d | 2015-01-15 03:53:57 +0100 | [diff] [blame] | 1429 | const void *opts = NULL; |
Jesse Gross | f579668 | 2014-10-03 15:35:33 -0700 | [diff] [blame] | 1430 | |
| 1431 | if (output->tun_key.tun_flags & TUNNEL_OPTIONS_PRESENT) |
Thomas Graf | d91641d | 2015-01-15 03:53:57 +0100 | [diff] [blame] | 1432 | opts = TUN_METADATA_OPTS(output, swkey->tun_opts_len); |
Jesse Gross | f579668 | 2014-10-03 15:35:33 -0700 | [diff] [blame] | 1433 | |
Jiri Benc | 6b26ba3 | 2015-10-05 13:09:47 +0200 | [diff] [blame] | 1434 | if (ip_tun_to_nlattr(skb, &output->tun_key, opts, |
| 1435 | swkey->tun_opts_len, swkey->tun_proto)) |
Jesse Gross | f579668 | 2014-10-03 15:35:33 -0700 | [diff] [blame] | 1436 | goto nla_put_failure; |
| 1437 | } |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1438 | |
| 1439 | if (swkey->phy.in_port == DP_MAX_PORTS) { |
| 1440 | if (is_mask && (output->phy.in_port == 0xffff)) |
| 1441 | if (nla_put_u32(skb, OVS_KEY_ATTR_IN_PORT, 0xffffffff)) |
| 1442 | goto nla_put_failure; |
| 1443 | } else { |
| 1444 | u16 upper_u16; |
| 1445 | upper_u16 = !is_mask ? 0 : 0xffff; |
| 1446 | |
| 1447 | if (nla_put_u32(skb, OVS_KEY_ATTR_IN_PORT, |
| 1448 | (upper_u16 << 16) | output->phy.in_port)) |
| 1449 | goto nla_put_failure; |
| 1450 | } |
| 1451 | |
| 1452 | if (nla_put_u32(skb, OVS_KEY_ATTR_SKB_MARK, output->phy.skb_mark)) |
| 1453 | goto nla_put_failure; |
| 1454 | |
Joe Stringer | 7f8a436 | 2015-08-26 11:31:48 -0700 | [diff] [blame] | 1455 | if (ovs_ct_put_key(output, skb)) |
| 1456 | goto nla_put_failure; |
| 1457 | |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1458 | nla = nla_reserve(skb, OVS_KEY_ATTR_ETHERNET, sizeof(*eth_key)); |
| 1459 | if (!nla) |
| 1460 | goto nla_put_failure; |
| 1461 | |
| 1462 | eth_key = nla_data(nla); |
Joe Perches | 8c63ff0 | 2014-02-18 11:15:45 -0800 | [diff] [blame] | 1463 | ether_addr_copy(eth_key->eth_src, output->eth.src); |
| 1464 | ether_addr_copy(eth_key->eth_dst, output->eth.dst); |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1465 | |
| 1466 | if (swkey->eth.tci || swkey->eth.type == htons(ETH_P_8021Q)) { |
| 1467 | __be16 eth_type; |
| 1468 | eth_type = !is_mask ? htons(ETH_P_8021Q) : htons(0xffff); |
| 1469 | if (nla_put_be16(skb, OVS_KEY_ATTR_ETHERTYPE, eth_type) || |
| 1470 | nla_put_be16(skb, OVS_KEY_ATTR_VLAN, output->eth.tci)) |
| 1471 | goto nla_put_failure; |
| 1472 | encap = nla_nest_start(skb, OVS_KEY_ATTR_ENCAP); |
| 1473 | if (!swkey->eth.tci) |
| 1474 | goto unencap; |
| 1475 | } else |
| 1476 | encap = NULL; |
| 1477 | |
| 1478 | if (swkey->eth.type == htons(ETH_P_802_2)) { |
| 1479 | /* |
| 1480 | * Ethertype 802.2 is represented in the netlink with omitted |
| 1481 | * OVS_KEY_ATTR_ETHERTYPE in the flow key attribute, and |
| 1482 | * 0xffff in the mask attribute. Ethertype can also |
| 1483 | * be wildcarded. |
| 1484 | */ |
| 1485 | if (is_mask && output->eth.type) |
| 1486 | if (nla_put_be16(skb, OVS_KEY_ATTR_ETHERTYPE, |
| 1487 | output->eth.type)) |
| 1488 | goto nla_put_failure; |
| 1489 | goto unencap; |
| 1490 | } |
| 1491 | |
| 1492 | if (nla_put_be16(skb, OVS_KEY_ATTR_ETHERTYPE, output->eth.type)) |
| 1493 | goto nla_put_failure; |
| 1494 | |
| 1495 | if (swkey->eth.type == htons(ETH_P_IP)) { |
| 1496 | struct ovs_key_ipv4 *ipv4_key; |
| 1497 | |
| 1498 | nla = nla_reserve(skb, OVS_KEY_ATTR_IPV4, sizeof(*ipv4_key)); |
| 1499 | if (!nla) |
| 1500 | goto nla_put_failure; |
| 1501 | ipv4_key = nla_data(nla); |
| 1502 | ipv4_key->ipv4_src = output->ipv4.addr.src; |
| 1503 | ipv4_key->ipv4_dst = output->ipv4.addr.dst; |
| 1504 | ipv4_key->ipv4_proto = output->ip.proto; |
| 1505 | ipv4_key->ipv4_tos = output->ip.tos; |
| 1506 | ipv4_key->ipv4_ttl = output->ip.ttl; |
| 1507 | ipv4_key->ipv4_frag = output->ip.frag; |
| 1508 | } else if (swkey->eth.type == htons(ETH_P_IPV6)) { |
| 1509 | struct ovs_key_ipv6 *ipv6_key; |
| 1510 | |
| 1511 | nla = nla_reserve(skb, OVS_KEY_ATTR_IPV6, sizeof(*ipv6_key)); |
| 1512 | if (!nla) |
| 1513 | goto nla_put_failure; |
| 1514 | ipv6_key = nla_data(nla); |
| 1515 | memcpy(ipv6_key->ipv6_src, &output->ipv6.addr.src, |
| 1516 | sizeof(ipv6_key->ipv6_src)); |
| 1517 | memcpy(ipv6_key->ipv6_dst, &output->ipv6.addr.dst, |
| 1518 | sizeof(ipv6_key->ipv6_dst)); |
| 1519 | ipv6_key->ipv6_label = output->ipv6.label; |
| 1520 | ipv6_key->ipv6_proto = output->ip.proto; |
| 1521 | ipv6_key->ipv6_tclass = output->ip.tos; |
| 1522 | ipv6_key->ipv6_hlimit = output->ip.ttl; |
| 1523 | ipv6_key->ipv6_frag = output->ip.frag; |
| 1524 | } else if (swkey->eth.type == htons(ETH_P_ARP) || |
| 1525 | swkey->eth.type == htons(ETH_P_RARP)) { |
| 1526 | struct ovs_key_arp *arp_key; |
| 1527 | |
| 1528 | nla = nla_reserve(skb, OVS_KEY_ATTR_ARP, sizeof(*arp_key)); |
| 1529 | if (!nla) |
| 1530 | goto nla_put_failure; |
| 1531 | arp_key = nla_data(nla); |
| 1532 | memset(arp_key, 0, sizeof(struct ovs_key_arp)); |
| 1533 | arp_key->arp_sip = output->ipv4.addr.src; |
| 1534 | arp_key->arp_tip = output->ipv4.addr.dst; |
| 1535 | arp_key->arp_op = htons(output->ip.proto); |
Joe Perches | 8c63ff0 | 2014-02-18 11:15:45 -0800 | [diff] [blame] | 1536 | ether_addr_copy(arp_key->arp_sha, output->ipv4.arp.sha); |
| 1537 | ether_addr_copy(arp_key->arp_tha, output->ipv4.arp.tha); |
Simon Horman | 25cd9ba | 2014-10-06 05:05:13 -0700 | [diff] [blame] | 1538 | } else if (eth_p_mpls(swkey->eth.type)) { |
| 1539 | struct ovs_key_mpls *mpls_key; |
| 1540 | |
| 1541 | nla = nla_reserve(skb, OVS_KEY_ATTR_MPLS, sizeof(*mpls_key)); |
| 1542 | if (!nla) |
| 1543 | goto nla_put_failure; |
| 1544 | mpls_key = nla_data(nla); |
| 1545 | mpls_key->mpls_lse = output->mpls.top_lse; |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1546 | } |
| 1547 | |
| 1548 | if ((swkey->eth.type == htons(ETH_P_IP) || |
| 1549 | swkey->eth.type == htons(ETH_P_IPV6)) && |
| 1550 | swkey->ip.frag != OVS_FRAG_TYPE_LATER) { |
| 1551 | |
| 1552 | if (swkey->ip.proto == IPPROTO_TCP) { |
| 1553 | struct ovs_key_tcp *tcp_key; |
| 1554 | |
| 1555 | nla = nla_reserve(skb, OVS_KEY_ATTR_TCP, sizeof(*tcp_key)); |
| 1556 | if (!nla) |
| 1557 | goto nla_put_failure; |
| 1558 | tcp_key = nla_data(nla); |
Jarno Rajahalme | 1139e24 | 2014-05-05 09:54:49 -0700 | [diff] [blame] | 1559 | tcp_key->tcp_src = output->tp.src; |
| 1560 | tcp_key->tcp_dst = output->tp.dst; |
| 1561 | if (nla_put_be16(skb, OVS_KEY_ATTR_TCP_FLAGS, |
| 1562 | output->tp.flags)) |
| 1563 | goto nla_put_failure; |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1564 | } else if (swkey->ip.proto == IPPROTO_UDP) { |
| 1565 | struct ovs_key_udp *udp_key; |
| 1566 | |
| 1567 | nla = nla_reserve(skb, OVS_KEY_ATTR_UDP, sizeof(*udp_key)); |
| 1568 | if (!nla) |
| 1569 | goto nla_put_failure; |
| 1570 | udp_key = nla_data(nla); |
Jarno Rajahalme | 1139e24 | 2014-05-05 09:54:49 -0700 | [diff] [blame] | 1571 | udp_key->udp_src = output->tp.src; |
| 1572 | udp_key->udp_dst = output->tp.dst; |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1573 | } else if (swkey->ip.proto == IPPROTO_SCTP) { |
| 1574 | struct ovs_key_sctp *sctp_key; |
| 1575 | |
| 1576 | nla = nla_reserve(skb, OVS_KEY_ATTR_SCTP, sizeof(*sctp_key)); |
| 1577 | if (!nla) |
| 1578 | goto nla_put_failure; |
| 1579 | sctp_key = nla_data(nla); |
Jarno Rajahalme | 1139e24 | 2014-05-05 09:54:49 -0700 | [diff] [blame] | 1580 | sctp_key->sctp_src = output->tp.src; |
| 1581 | sctp_key->sctp_dst = output->tp.dst; |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1582 | } else if (swkey->eth.type == htons(ETH_P_IP) && |
| 1583 | swkey->ip.proto == IPPROTO_ICMP) { |
| 1584 | struct ovs_key_icmp *icmp_key; |
| 1585 | |
| 1586 | nla = nla_reserve(skb, OVS_KEY_ATTR_ICMP, sizeof(*icmp_key)); |
| 1587 | if (!nla) |
| 1588 | goto nla_put_failure; |
| 1589 | icmp_key = nla_data(nla); |
Jarno Rajahalme | 1139e24 | 2014-05-05 09:54:49 -0700 | [diff] [blame] | 1590 | icmp_key->icmp_type = ntohs(output->tp.src); |
| 1591 | icmp_key->icmp_code = ntohs(output->tp.dst); |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1592 | } else if (swkey->eth.type == htons(ETH_P_IPV6) && |
| 1593 | swkey->ip.proto == IPPROTO_ICMPV6) { |
| 1594 | struct ovs_key_icmpv6 *icmpv6_key; |
| 1595 | |
| 1596 | nla = nla_reserve(skb, OVS_KEY_ATTR_ICMPV6, |
| 1597 | sizeof(*icmpv6_key)); |
| 1598 | if (!nla) |
| 1599 | goto nla_put_failure; |
| 1600 | icmpv6_key = nla_data(nla); |
Jarno Rajahalme | 1139e24 | 2014-05-05 09:54:49 -0700 | [diff] [blame] | 1601 | icmpv6_key->icmpv6_type = ntohs(output->tp.src); |
| 1602 | icmpv6_key->icmpv6_code = ntohs(output->tp.dst); |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1603 | |
| 1604 | if (icmpv6_key->icmpv6_type == NDISC_NEIGHBOUR_SOLICITATION || |
| 1605 | icmpv6_key->icmpv6_type == NDISC_NEIGHBOUR_ADVERTISEMENT) { |
| 1606 | struct ovs_key_nd *nd_key; |
| 1607 | |
| 1608 | nla = nla_reserve(skb, OVS_KEY_ATTR_ND, sizeof(*nd_key)); |
| 1609 | if (!nla) |
| 1610 | goto nla_put_failure; |
| 1611 | nd_key = nla_data(nla); |
| 1612 | memcpy(nd_key->nd_target, &output->ipv6.nd.target, |
| 1613 | sizeof(nd_key->nd_target)); |
Joe Perches | 8c63ff0 | 2014-02-18 11:15:45 -0800 | [diff] [blame] | 1614 | ether_addr_copy(nd_key->nd_sll, output->ipv6.nd.sll); |
| 1615 | ether_addr_copy(nd_key->nd_tll, output->ipv6.nd.tll); |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1616 | } |
| 1617 | } |
| 1618 | } |
| 1619 | |
| 1620 | unencap: |
| 1621 | if (encap) |
| 1622 | nla_nest_end(skb, encap); |
| 1623 | |
| 1624 | return 0; |
| 1625 | |
| 1626 | nla_put_failure: |
| 1627 | return -EMSGSIZE; |
| 1628 | } |
| 1629 | |
Joe Stringer | 5b4237b | 2015-01-21 16:42:48 -0800 | [diff] [blame] | 1630 | int ovs_nla_put_key(const struct sw_flow_key *swkey, |
| 1631 | const struct sw_flow_key *output, int attr, bool is_mask, |
| 1632 | struct sk_buff *skb) |
| 1633 | { |
| 1634 | int err; |
| 1635 | struct nlattr *nla; |
| 1636 | |
| 1637 | nla = nla_nest_start(skb, attr); |
| 1638 | if (!nla) |
| 1639 | return -EMSGSIZE; |
| 1640 | err = __ovs_nla_put_key(swkey, output, is_mask, skb); |
| 1641 | if (err) |
| 1642 | return err; |
| 1643 | nla_nest_end(skb, nla); |
| 1644 | |
| 1645 | return 0; |
| 1646 | } |
| 1647 | |
| 1648 | /* Called with ovs_mutex or RCU read lock. */ |
Joe Stringer | 74ed7ab | 2015-01-21 16:42:52 -0800 | [diff] [blame] | 1649 | int ovs_nla_put_identifier(const struct sw_flow *flow, struct sk_buff *skb) |
Joe Stringer | 5b4237b | 2015-01-21 16:42:48 -0800 | [diff] [blame] | 1650 | { |
Joe Stringer | 74ed7ab | 2015-01-21 16:42:52 -0800 | [diff] [blame] | 1651 | if (ovs_identifier_is_ufid(&flow->id)) |
| 1652 | return nla_put(skb, OVS_FLOW_ATTR_UFID, flow->id.ufid_len, |
| 1653 | flow->id.ufid); |
| 1654 | |
| 1655 | return ovs_nla_put_key(flow->id.unmasked_key, flow->id.unmasked_key, |
| 1656 | OVS_FLOW_ATTR_KEY, false, skb); |
| 1657 | } |
| 1658 | |
| 1659 | /* Called with ovs_mutex or RCU read lock. */ |
| 1660 | int ovs_nla_put_masked_key(const struct sw_flow *flow, struct sk_buff *skb) |
| 1661 | { |
Pravin B Shelar | 26ad0b8 | 2015-02-12 09:58:48 -0800 | [diff] [blame] | 1662 | return ovs_nla_put_key(&flow->key, &flow->key, |
Joe Stringer | 5b4237b | 2015-01-21 16:42:48 -0800 | [diff] [blame] | 1663 | OVS_FLOW_ATTR_KEY, false, skb); |
| 1664 | } |
| 1665 | |
| 1666 | /* Called with ovs_mutex or RCU read lock. */ |
| 1667 | int ovs_nla_put_mask(const struct sw_flow *flow, struct sk_buff *skb) |
| 1668 | { |
| 1669 | return ovs_nla_put_key(&flow->key, &flow->mask->key, |
| 1670 | OVS_FLOW_ATTR_MASK, true, skb); |
| 1671 | } |
| 1672 | |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1673 | #define MAX_ACTIONS_BUFSIZE (32 * 1024) |
| 1674 | |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 1675 | static struct sw_flow_actions *nla_alloc_flow_actions(int size, bool log) |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1676 | { |
| 1677 | struct sw_flow_actions *sfa; |
| 1678 | |
Jesse Gross | 426cda5 | 2014-10-06 05:08:38 -0700 | [diff] [blame] | 1679 | if (size > MAX_ACTIONS_BUFSIZE) { |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 1680 | OVS_NLERR(log, "Flow action size %u bytes exceeds max", size); |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1681 | return ERR_PTR(-EINVAL); |
Jesse Gross | 426cda5 | 2014-10-06 05:08:38 -0700 | [diff] [blame] | 1682 | } |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1683 | |
| 1684 | sfa = kmalloc(sizeof(*sfa) + size, GFP_KERNEL); |
| 1685 | if (!sfa) |
| 1686 | return ERR_PTR(-ENOMEM); |
| 1687 | |
| 1688 | sfa->actions_len = 0; |
| 1689 | return sfa; |
| 1690 | } |
| 1691 | |
Thomas Graf | 34ae932 | 2015-07-21 10:44:03 +0200 | [diff] [blame] | 1692 | static void ovs_nla_free_set_action(const struct nlattr *a) |
| 1693 | { |
| 1694 | const struct nlattr *ovs_key = nla_data(a); |
| 1695 | struct ovs_tunnel_info *ovs_tun; |
| 1696 | |
| 1697 | switch (nla_type(ovs_key)) { |
| 1698 | case OVS_KEY_ATTR_TUNNEL_INFO: |
| 1699 | ovs_tun = nla_data(ovs_key); |
| 1700 | dst_release((struct dst_entry *)ovs_tun->tun_dst); |
| 1701 | break; |
| 1702 | } |
| 1703 | } |
| 1704 | |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1705 | void ovs_nla_free_flow_actions(struct sw_flow_actions *sf_acts) |
| 1706 | { |
Thomas Graf | 34ae932 | 2015-07-21 10:44:03 +0200 | [diff] [blame] | 1707 | const struct nlattr *a; |
| 1708 | int rem; |
| 1709 | |
| 1710 | if (!sf_acts) |
| 1711 | return; |
| 1712 | |
| 1713 | nla_for_each_attr(a, sf_acts->actions, sf_acts->actions_len, rem) { |
| 1714 | switch (nla_type(a)) { |
| 1715 | case OVS_ACTION_ATTR_SET: |
| 1716 | ovs_nla_free_set_action(a); |
| 1717 | break; |
Joe Stringer | 7f8a436 | 2015-08-26 11:31:48 -0700 | [diff] [blame] | 1718 | case OVS_ACTION_ATTR_CT: |
| 1719 | ovs_ct_free_action(a); |
| 1720 | break; |
Thomas Graf | 34ae932 | 2015-07-21 10:44:03 +0200 | [diff] [blame] | 1721 | } |
| 1722 | } |
| 1723 | |
| 1724 | kfree(sf_acts); |
| 1725 | } |
| 1726 | |
| 1727 | static void __ovs_nla_free_flow_actions(struct rcu_head *head) |
| 1728 | { |
| 1729 | ovs_nla_free_flow_actions(container_of(head, struct sw_flow_actions, rcu)); |
| 1730 | } |
| 1731 | |
| 1732 | /* Schedules 'sf_acts' to be freed after the next RCU grace period. |
| 1733 | * The caller must hold rcu_read_lock for this to be sensible. */ |
| 1734 | void ovs_nla_free_flow_actions_rcu(struct sw_flow_actions *sf_acts) |
| 1735 | { |
| 1736 | call_rcu(&sf_acts->rcu, __ovs_nla_free_flow_actions); |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1737 | } |
| 1738 | |
| 1739 | static struct nlattr *reserve_sfa_size(struct sw_flow_actions **sfa, |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 1740 | int attr_len, bool log) |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1741 | { |
| 1742 | |
| 1743 | struct sw_flow_actions *acts; |
| 1744 | int new_acts_size; |
| 1745 | int req_size = NLA_ALIGN(attr_len); |
| 1746 | int next_offset = offsetof(struct sw_flow_actions, actions) + |
| 1747 | (*sfa)->actions_len; |
| 1748 | |
| 1749 | if (req_size <= (ksize(*sfa) - next_offset)) |
| 1750 | goto out; |
| 1751 | |
| 1752 | new_acts_size = ksize(*sfa) * 2; |
| 1753 | |
| 1754 | if (new_acts_size > MAX_ACTIONS_BUFSIZE) { |
| 1755 | if ((MAX_ACTIONS_BUFSIZE - next_offset) < req_size) |
| 1756 | return ERR_PTR(-EMSGSIZE); |
| 1757 | new_acts_size = MAX_ACTIONS_BUFSIZE; |
| 1758 | } |
| 1759 | |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 1760 | acts = nla_alloc_flow_actions(new_acts_size, log); |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1761 | if (IS_ERR(acts)) |
| 1762 | return (void *)acts; |
| 1763 | |
| 1764 | memcpy(acts->actions, (*sfa)->actions, (*sfa)->actions_len); |
| 1765 | acts->actions_len = (*sfa)->actions_len; |
Joe Stringer | 8e2fed1 | 2015-08-26 11:31:44 -0700 | [diff] [blame] | 1766 | acts->orig_len = (*sfa)->orig_len; |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1767 | kfree(*sfa); |
| 1768 | *sfa = acts; |
| 1769 | |
| 1770 | out: |
| 1771 | (*sfa)->actions_len += req_size; |
| 1772 | return (struct nlattr *) ((unsigned char *)(*sfa) + next_offset); |
| 1773 | } |
| 1774 | |
Jesse Gross | f0b128c | 2014-10-03 15:35:31 -0700 | [diff] [blame] | 1775 | static struct nlattr *__add_action(struct sw_flow_actions **sfa, |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 1776 | int attrtype, void *data, int len, bool log) |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1777 | { |
| 1778 | struct nlattr *a; |
| 1779 | |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 1780 | a = reserve_sfa_size(sfa, nla_attr_size(len), log); |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1781 | if (IS_ERR(a)) |
Jesse Gross | f0b128c | 2014-10-03 15:35:31 -0700 | [diff] [blame] | 1782 | return a; |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1783 | |
| 1784 | a->nla_type = attrtype; |
| 1785 | a->nla_len = nla_attr_size(len); |
| 1786 | |
| 1787 | if (data) |
| 1788 | memcpy(nla_data(a), data, len); |
| 1789 | memset((unsigned char *) a + a->nla_len, 0, nla_padlen(len)); |
| 1790 | |
Jesse Gross | f0b128c | 2014-10-03 15:35:31 -0700 | [diff] [blame] | 1791 | return a; |
| 1792 | } |
| 1793 | |
Joe Stringer | 7f8a436 | 2015-08-26 11:31:48 -0700 | [diff] [blame] | 1794 | int ovs_nla_add_action(struct sw_flow_actions **sfa, int attrtype, void *data, |
| 1795 | int len, bool log) |
Jesse Gross | f0b128c | 2014-10-03 15:35:31 -0700 | [diff] [blame] | 1796 | { |
| 1797 | struct nlattr *a; |
| 1798 | |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 1799 | a = __add_action(sfa, attrtype, data, len, log); |
Jesse Gross | f0b128c | 2014-10-03 15:35:31 -0700 | [diff] [blame] | 1800 | |
Fabian Frederick | f35423c1 | 2014-11-14 19:32:58 +0100 | [diff] [blame] | 1801 | return PTR_ERR_OR_ZERO(a); |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1802 | } |
| 1803 | |
| 1804 | static inline int add_nested_action_start(struct sw_flow_actions **sfa, |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 1805 | int attrtype, bool log) |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1806 | { |
| 1807 | int used = (*sfa)->actions_len; |
| 1808 | int err; |
| 1809 | |
Joe Stringer | 7f8a436 | 2015-08-26 11:31:48 -0700 | [diff] [blame] | 1810 | err = ovs_nla_add_action(sfa, attrtype, NULL, 0, log); |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1811 | if (err) |
| 1812 | return err; |
| 1813 | |
| 1814 | return used; |
| 1815 | } |
| 1816 | |
| 1817 | static inline void add_nested_action_end(struct sw_flow_actions *sfa, |
| 1818 | int st_offset) |
| 1819 | { |
| 1820 | struct nlattr *a = (struct nlattr *) ((unsigned char *)sfa->actions + |
| 1821 | st_offset); |
| 1822 | |
| 1823 | a->nla_len = sfa->actions_len - st_offset; |
| 1824 | } |
| 1825 | |
Joe Stringer | 7f8a436 | 2015-08-26 11:31:48 -0700 | [diff] [blame] | 1826 | static int __ovs_nla_copy_actions(struct net *net, const struct nlattr *attr, |
Simon Horman | 25cd9ba | 2014-10-06 05:05:13 -0700 | [diff] [blame] | 1827 | const struct sw_flow_key *key, |
| 1828 | int depth, struct sw_flow_actions **sfa, |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 1829 | __be16 eth_type, __be16 vlan_tci, bool log); |
Simon Horman | 25cd9ba | 2014-10-06 05:05:13 -0700 | [diff] [blame] | 1830 | |
Joe Stringer | 7f8a436 | 2015-08-26 11:31:48 -0700 | [diff] [blame] | 1831 | static int validate_and_copy_sample(struct net *net, const struct nlattr *attr, |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1832 | const struct sw_flow_key *key, int depth, |
Simon Horman | 25cd9ba | 2014-10-06 05:05:13 -0700 | [diff] [blame] | 1833 | struct sw_flow_actions **sfa, |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 1834 | __be16 eth_type, __be16 vlan_tci, bool log) |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1835 | { |
| 1836 | const struct nlattr *attrs[OVS_SAMPLE_ATTR_MAX + 1]; |
| 1837 | const struct nlattr *probability, *actions; |
| 1838 | const struct nlattr *a; |
| 1839 | int rem, start, err, st_acts; |
| 1840 | |
| 1841 | memset(attrs, 0, sizeof(attrs)); |
| 1842 | nla_for_each_nested(a, attr, rem) { |
| 1843 | int type = nla_type(a); |
| 1844 | if (!type || type > OVS_SAMPLE_ATTR_MAX || attrs[type]) |
| 1845 | return -EINVAL; |
| 1846 | attrs[type] = a; |
| 1847 | } |
| 1848 | if (rem) |
| 1849 | return -EINVAL; |
| 1850 | |
| 1851 | probability = attrs[OVS_SAMPLE_ATTR_PROBABILITY]; |
| 1852 | if (!probability || nla_len(probability) != sizeof(u32)) |
| 1853 | return -EINVAL; |
| 1854 | |
| 1855 | actions = attrs[OVS_SAMPLE_ATTR_ACTIONS]; |
| 1856 | if (!actions || (nla_len(actions) && nla_len(actions) < NLA_HDRLEN)) |
| 1857 | return -EINVAL; |
| 1858 | |
| 1859 | /* validation done, copy sample action. */ |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 1860 | start = add_nested_action_start(sfa, OVS_ACTION_ATTR_SAMPLE, log); |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1861 | if (start < 0) |
| 1862 | return start; |
Joe Stringer | 7f8a436 | 2015-08-26 11:31:48 -0700 | [diff] [blame] | 1863 | err = ovs_nla_add_action(sfa, OVS_SAMPLE_ATTR_PROBABILITY, |
| 1864 | nla_data(probability), sizeof(u32), log); |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1865 | if (err) |
| 1866 | return err; |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 1867 | st_acts = add_nested_action_start(sfa, OVS_SAMPLE_ATTR_ACTIONS, log); |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1868 | if (st_acts < 0) |
| 1869 | return st_acts; |
| 1870 | |
Joe Stringer | 7f8a436 | 2015-08-26 11:31:48 -0700 | [diff] [blame] | 1871 | err = __ovs_nla_copy_actions(net, actions, key, depth + 1, sfa, |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 1872 | eth_type, vlan_tci, log); |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1873 | if (err) |
| 1874 | return err; |
| 1875 | |
| 1876 | add_nested_action_end(*sfa, st_acts); |
| 1877 | add_nested_action_end(*sfa, start); |
| 1878 | |
| 1879 | return 0; |
| 1880 | } |
| 1881 | |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1882 | void ovs_match_init(struct sw_flow_match *match, |
| 1883 | struct sw_flow_key *key, |
| 1884 | struct sw_flow_mask *mask) |
| 1885 | { |
| 1886 | memset(match, 0, sizeof(*match)); |
| 1887 | match->key = key; |
| 1888 | match->mask = mask; |
| 1889 | |
| 1890 | memset(key, 0, sizeof(*key)); |
| 1891 | |
| 1892 | if (mask) { |
| 1893 | memset(&mask->key, 0, sizeof(mask->key)); |
| 1894 | mask->range.start = mask->range.end = 0; |
| 1895 | } |
| 1896 | } |
| 1897 | |
Thomas Graf | d91641d | 2015-01-15 03:53:57 +0100 | [diff] [blame] | 1898 | static int validate_geneve_opts(struct sw_flow_key *key) |
| 1899 | { |
| 1900 | struct geneve_opt *option; |
| 1901 | int opts_len = key->tun_opts_len; |
| 1902 | bool crit_opt = false; |
| 1903 | |
| 1904 | option = (struct geneve_opt *)TUN_METADATA_OPTS(key, key->tun_opts_len); |
| 1905 | while (opts_len > 0) { |
| 1906 | int len; |
| 1907 | |
| 1908 | if (opts_len < sizeof(*option)) |
| 1909 | return -EINVAL; |
| 1910 | |
| 1911 | len = sizeof(*option) + option->length * 4; |
| 1912 | if (len > opts_len) |
| 1913 | return -EINVAL; |
| 1914 | |
| 1915 | crit_opt |= !!(option->type & GENEVE_CRIT_OPT_TYPE); |
| 1916 | |
| 1917 | option = (struct geneve_opt *)((u8 *)option + len); |
| 1918 | opts_len -= len; |
| 1919 | }; |
| 1920 | |
| 1921 | key->tun_key.tun_flags |= crit_opt ? TUNNEL_CRIT_OPT : 0; |
| 1922 | |
| 1923 | return 0; |
| 1924 | } |
| 1925 | |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1926 | static int validate_and_copy_set_tun(const struct nlattr *attr, |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 1927 | struct sw_flow_actions **sfa, bool log) |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1928 | { |
| 1929 | struct sw_flow_match match; |
| 1930 | struct sw_flow_key key; |
Thomas Graf | 34ae932 | 2015-07-21 10:44:03 +0200 | [diff] [blame] | 1931 | struct metadata_dst *tun_dst; |
Thomas Graf | 1d8fff9 | 2015-07-21 10:43:54 +0200 | [diff] [blame] | 1932 | struct ip_tunnel_info *tun_info; |
Thomas Graf | 34ae932 | 2015-07-21 10:44:03 +0200 | [diff] [blame] | 1933 | struct ovs_tunnel_info *ovs_tun; |
Jesse Gross | f0b128c | 2014-10-03 15:35:31 -0700 | [diff] [blame] | 1934 | struct nlattr *a; |
Geert Uytterhoeven | 1310160 | 2015-02-11 11:23:38 +0100 | [diff] [blame] | 1935 | int err = 0, start, opts_type; |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1936 | |
| 1937 | ovs_match_init(&match, &key, NULL); |
Jiri Benc | 6b26ba3 | 2015-10-05 13:09:47 +0200 | [diff] [blame] | 1938 | opts_type = ip_tun_from_nlattr(nla_data(attr), &match, false, log); |
Thomas Graf | 1dd144c | 2015-01-15 03:53:59 +0100 | [diff] [blame] | 1939 | if (opts_type < 0) |
| 1940 | return opts_type; |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1941 | |
Jesse Gross | f579668 | 2014-10-03 15:35:33 -0700 | [diff] [blame] | 1942 | if (key.tun_opts_len) { |
Thomas Graf | 1dd144c | 2015-01-15 03:53:59 +0100 | [diff] [blame] | 1943 | switch (opts_type) { |
| 1944 | case OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS: |
| 1945 | err = validate_geneve_opts(&key); |
| 1946 | if (err < 0) |
| 1947 | return err; |
| 1948 | break; |
| 1949 | case OVS_TUNNEL_KEY_ATTR_VXLAN_OPTS: |
| 1950 | break; |
| 1951 | } |
Jesse Gross | f579668 | 2014-10-03 15:35:33 -0700 | [diff] [blame] | 1952 | }; |
| 1953 | |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 1954 | start = add_nested_action_start(sfa, OVS_ACTION_ATTR_SET, log); |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1955 | if (start < 0) |
| 1956 | return start; |
| 1957 | |
Thomas Graf | 34ae932 | 2015-07-21 10:44:03 +0200 | [diff] [blame] | 1958 | tun_dst = metadata_dst_alloc(key.tun_opts_len, GFP_KERNEL); |
| 1959 | if (!tun_dst) |
| 1960 | return -ENOMEM; |
Jesse Gross | f0b128c | 2014-10-03 15:35:31 -0700 | [diff] [blame] | 1961 | |
Paolo Abeni | d71785f | 2016-02-12 15:43:57 +0100 | [diff] [blame] | 1962 | err = dst_cache_init(&tun_dst->u.tun_info.dst_cache, GFP_KERNEL); |
| 1963 | if (err) { |
| 1964 | dst_release((struct dst_entry *)tun_dst); |
| 1965 | return err; |
| 1966 | } |
| 1967 | |
Thomas Graf | 34ae932 | 2015-07-21 10:44:03 +0200 | [diff] [blame] | 1968 | a = __add_action(sfa, OVS_KEY_ATTR_TUNNEL_INFO, NULL, |
| 1969 | sizeof(*ovs_tun), log); |
| 1970 | if (IS_ERR(a)) { |
| 1971 | dst_release((struct dst_entry *)tun_dst); |
| 1972 | return PTR_ERR(a); |
| 1973 | } |
| 1974 | |
| 1975 | ovs_tun = nla_data(a); |
| 1976 | ovs_tun->tun_dst = tun_dst; |
| 1977 | |
| 1978 | tun_info = &tun_dst->u.tun_info; |
| 1979 | tun_info->mode = IP_TUNNEL_INFO_TX; |
Jiri Benc | 00a93ba | 2015-10-05 13:09:46 +0200 | [diff] [blame] | 1980 | if (key.tun_proto == AF_INET6) |
| 1981 | tun_info->mode |= IP_TUNNEL_INFO_IPV6; |
Thomas Graf | 1d8fff9 | 2015-07-21 10:43:54 +0200 | [diff] [blame] | 1982 | tun_info->key = key.tun_key; |
Jesse Gross | f579668 | 2014-10-03 15:35:33 -0700 | [diff] [blame] | 1983 | |
Pravin B Shelar | 4c22279 | 2015-08-30 18:09:38 -0700 | [diff] [blame] | 1984 | /* We need to store the options in the action itself since |
| 1985 | * everything else will go away after flow setup. We can append |
| 1986 | * it to tun_info and then point there. |
| 1987 | */ |
| 1988 | ip_tunnel_info_opts_set(tun_info, |
| 1989 | TUN_METADATA_OPTS(&key, key.tun_opts_len), |
| 1990 | key.tun_opts_len); |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 1991 | add_nested_action_end(*sfa, start); |
| 1992 | |
| 1993 | return err; |
| 1994 | } |
| 1995 | |
Jarno Rajahalme | 83d2b9b | 2015-02-05 13:40:49 -0800 | [diff] [blame] | 1996 | /* Return false if there are any non-masked bits set. |
| 1997 | * Mask follows data immediately, before any netlink padding. |
| 1998 | */ |
| 1999 | static bool validate_masked(u8 *data, int len) |
| 2000 | { |
| 2001 | u8 *mask = data + len; |
| 2002 | |
| 2003 | while (len--) |
| 2004 | if (*data++ & ~*mask++) |
| 2005 | return false; |
| 2006 | |
| 2007 | return true; |
| 2008 | } |
| 2009 | |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 2010 | static int validate_set(const struct nlattr *a, |
| 2011 | const struct sw_flow_key *flow_key, |
| 2012 | struct sw_flow_actions **sfa, |
Jarno Rajahalme | 83d2b9b | 2015-02-05 13:40:49 -0800 | [diff] [blame] | 2013 | bool *skip_copy, __be16 eth_type, bool masked, bool log) |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 2014 | { |
| 2015 | const struct nlattr *ovs_key = nla_data(a); |
| 2016 | int key_type = nla_type(ovs_key); |
Jarno Rajahalme | 83d2b9b | 2015-02-05 13:40:49 -0800 | [diff] [blame] | 2017 | size_t key_len; |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 2018 | |
| 2019 | /* There can be only one key in a action */ |
| 2020 | if (nla_total_size(nla_len(ovs_key)) != nla_len(a)) |
| 2021 | return -EINVAL; |
| 2022 | |
Jarno Rajahalme | 83d2b9b | 2015-02-05 13:40:49 -0800 | [diff] [blame] | 2023 | key_len = nla_len(ovs_key); |
| 2024 | if (masked) |
| 2025 | key_len /= 2; |
| 2026 | |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 2027 | if (key_type > OVS_KEY_ATTR_MAX || |
Jesse Gross | 982b527 | 2015-09-11 18:38:28 -0700 | [diff] [blame] | 2028 | !check_attr_len(key_len, ovs_key_lens[key_type].len)) |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 2029 | return -EINVAL; |
| 2030 | |
Jarno Rajahalme | 83d2b9b | 2015-02-05 13:40:49 -0800 | [diff] [blame] | 2031 | if (masked && !validate_masked(nla_data(ovs_key), key_len)) |
| 2032 | return -EINVAL; |
| 2033 | |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 2034 | switch (key_type) { |
| 2035 | const struct ovs_key_ipv4 *ipv4_key; |
| 2036 | const struct ovs_key_ipv6 *ipv6_key; |
| 2037 | int err; |
| 2038 | |
| 2039 | case OVS_KEY_ATTR_PRIORITY: |
| 2040 | case OVS_KEY_ATTR_SKB_MARK: |
Joe Stringer | 182e304 | 2015-08-26 11:31:49 -0700 | [diff] [blame] | 2041 | case OVS_KEY_ATTR_CT_MARK: |
Joe Stringer | 33db412 | 2015-10-01 15:00:37 -0700 | [diff] [blame] | 2042 | case OVS_KEY_ATTR_CT_LABELS: |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 2043 | case OVS_KEY_ATTR_ETHERNET: |
| 2044 | break; |
| 2045 | |
| 2046 | case OVS_KEY_ATTR_TUNNEL: |
Jarno Rajahalme | 83d2b9b | 2015-02-05 13:40:49 -0800 | [diff] [blame] | 2047 | if (masked) |
| 2048 | return -EINVAL; /* Masked tunnel set not supported. */ |
| 2049 | |
| 2050 | *skip_copy = true; |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 2051 | err = validate_and_copy_set_tun(a, sfa, log); |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 2052 | if (err) |
| 2053 | return err; |
| 2054 | break; |
| 2055 | |
| 2056 | case OVS_KEY_ATTR_IPV4: |
Simon Horman | 25cd9ba | 2014-10-06 05:05:13 -0700 | [diff] [blame] | 2057 | if (eth_type != htons(ETH_P_IP)) |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 2058 | return -EINVAL; |
| 2059 | |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 2060 | ipv4_key = nla_data(ovs_key); |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 2061 | |
Jarno Rajahalme | 83d2b9b | 2015-02-05 13:40:49 -0800 | [diff] [blame] | 2062 | if (masked) { |
| 2063 | const struct ovs_key_ipv4 *mask = ipv4_key + 1; |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 2064 | |
Jarno Rajahalme | 83d2b9b | 2015-02-05 13:40:49 -0800 | [diff] [blame] | 2065 | /* Non-writeable fields. */ |
| 2066 | if (mask->ipv4_proto || mask->ipv4_frag) |
| 2067 | return -EINVAL; |
| 2068 | } else { |
| 2069 | if (ipv4_key->ipv4_proto != flow_key->ip.proto) |
| 2070 | return -EINVAL; |
| 2071 | |
| 2072 | if (ipv4_key->ipv4_frag != flow_key->ip.frag) |
| 2073 | return -EINVAL; |
| 2074 | } |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 2075 | break; |
| 2076 | |
| 2077 | case OVS_KEY_ATTR_IPV6: |
Simon Horman | 25cd9ba | 2014-10-06 05:05:13 -0700 | [diff] [blame] | 2078 | if (eth_type != htons(ETH_P_IPV6)) |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 2079 | return -EINVAL; |
| 2080 | |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 2081 | ipv6_key = nla_data(ovs_key); |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 2082 | |
Jarno Rajahalme | 83d2b9b | 2015-02-05 13:40:49 -0800 | [diff] [blame] | 2083 | if (masked) { |
| 2084 | const struct ovs_key_ipv6 *mask = ipv6_key + 1; |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 2085 | |
Jarno Rajahalme | 83d2b9b | 2015-02-05 13:40:49 -0800 | [diff] [blame] | 2086 | /* Non-writeable fields. */ |
| 2087 | if (mask->ipv6_proto || mask->ipv6_frag) |
| 2088 | return -EINVAL; |
| 2089 | |
| 2090 | /* Invalid bits in the flow label mask? */ |
| 2091 | if (ntohl(mask->ipv6_label) & 0xFFF00000) |
| 2092 | return -EINVAL; |
| 2093 | } else { |
| 2094 | if (ipv6_key->ipv6_proto != flow_key->ip.proto) |
| 2095 | return -EINVAL; |
| 2096 | |
| 2097 | if (ipv6_key->ipv6_frag != flow_key->ip.frag) |
| 2098 | return -EINVAL; |
| 2099 | } |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 2100 | if (ntohl(ipv6_key->ipv6_label) & 0xFFF00000) |
| 2101 | return -EINVAL; |
| 2102 | |
| 2103 | break; |
| 2104 | |
| 2105 | case OVS_KEY_ATTR_TCP: |
Jarno Rajahalme | 83d2b9b | 2015-02-05 13:40:49 -0800 | [diff] [blame] | 2106 | if ((eth_type != htons(ETH_P_IP) && |
| 2107 | eth_type != htons(ETH_P_IPV6)) || |
| 2108 | flow_key->ip.proto != IPPROTO_TCP) |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 2109 | return -EINVAL; |
| 2110 | |
Jarno Rajahalme | 83d2b9b | 2015-02-05 13:40:49 -0800 | [diff] [blame] | 2111 | break; |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 2112 | |
| 2113 | case OVS_KEY_ATTR_UDP: |
Jarno Rajahalme | 83d2b9b | 2015-02-05 13:40:49 -0800 | [diff] [blame] | 2114 | if ((eth_type != htons(ETH_P_IP) && |
| 2115 | eth_type != htons(ETH_P_IPV6)) || |
| 2116 | flow_key->ip.proto != IPPROTO_UDP) |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 2117 | return -EINVAL; |
| 2118 | |
Jarno Rajahalme | 83d2b9b | 2015-02-05 13:40:49 -0800 | [diff] [blame] | 2119 | break; |
Simon Horman | 25cd9ba | 2014-10-06 05:05:13 -0700 | [diff] [blame] | 2120 | |
| 2121 | case OVS_KEY_ATTR_MPLS: |
| 2122 | if (!eth_p_mpls(eth_type)) |
| 2123 | return -EINVAL; |
| 2124 | break; |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 2125 | |
| 2126 | case OVS_KEY_ATTR_SCTP: |
Jarno Rajahalme | 83d2b9b | 2015-02-05 13:40:49 -0800 | [diff] [blame] | 2127 | if ((eth_type != htons(ETH_P_IP) && |
| 2128 | eth_type != htons(ETH_P_IPV6)) || |
| 2129 | flow_key->ip.proto != IPPROTO_SCTP) |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 2130 | return -EINVAL; |
| 2131 | |
Jarno Rajahalme | 83d2b9b | 2015-02-05 13:40:49 -0800 | [diff] [blame] | 2132 | break; |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 2133 | |
| 2134 | default: |
| 2135 | return -EINVAL; |
| 2136 | } |
| 2137 | |
Jarno Rajahalme | 83d2b9b | 2015-02-05 13:40:49 -0800 | [diff] [blame] | 2138 | /* Convert non-masked non-tunnel set actions to masked set actions. */ |
| 2139 | if (!masked && key_type != OVS_KEY_ATTR_TUNNEL) { |
| 2140 | int start, len = key_len * 2; |
| 2141 | struct nlattr *at; |
| 2142 | |
| 2143 | *skip_copy = true; |
| 2144 | |
| 2145 | start = add_nested_action_start(sfa, |
| 2146 | OVS_ACTION_ATTR_SET_TO_MASKED, |
| 2147 | log); |
| 2148 | if (start < 0) |
| 2149 | return start; |
| 2150 | |
| 2151 | at = __add_action(sfa, key_type, NULL, len, log); |
| 2152 | if (IS_ERR(at)) |
| 2153 | return PTR_ERR(at); |
| 2154 | |
| 2155 | memcpy(nla_data(at), nla_data(ovs_key), key_len); /* Key. */ |
| 2156 | memset(nla_data(at) + key_len, 0xff, key_len); /* Mask. */ |
| 2157 | /* Clear non-writeable bits from otherwise writeable fields. */ |
| 2158 | if (key_type == OVS_KEY_ATTR_IPV6) { |
| 2159 | struct ovs_key_ipv6 *mask = nla_data(at) + key_len; |
| 2160 | |
| 2161 | mask->ipv6_label &= htonl(0x000FFFFF); |
| 2162 | } |
| 2163 | add_nested_action_end(*sfa, start); |
| 2164 | } |
| 2165 | |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 2166 | return 0; |
| 2167 | } |
| 2168 | |
| 2169 | static int validate_userspace(const struct nlattr *attr) |
| 2170 | { |
| 2171 | static const struct nla_policy userspace_policy[OVS_USERSPACE_ATTR_MAX + 1] = { |
| 2172 | [OVS_USERSPACE_ATTR_PID] = {.type = NLA_U32 }, |
| 2173 | [OVS_USERSPACE_ATTR_USERDATA] = {.type = NLA_UNSPEC }, |
Wenyu Zhang | 8f0aad6 | 2014-11-06 06:51:24 -0800 | [diff] [blame] | 2174 | [OVS_USERSPACE_ATTR_EGRESS_TUN_PORT] = {.type = NLA_U32 }, |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 2175 | }; |
| 2176 | struct nlattr *a[OVS_USERSPACE_ATTR_MAX + 1]; |
| 2177 | int error; |
| 2178 | |
| 2179 | error = nla_parse_nested(a, OVS_USERSPACE_ATTR_MAX, |
| 2180 | attr, userspace_policy); |
| 2181 | if (error) |
| 2182 | return error; |
| 2183 | |
| 2184 | if (!a[OVS_USERSPACE_ATTR_PID] || |
| 2185 | !nla_get_u32(a[OVS_USERSPACE_ATTR_PID])) |
| 2186 | return -EINVAL; |
| 2187 | |
| 2188 | return 0; |
| 2189 | } |
| 2190 | |
| 2191 | static int copy_action(const struct nlattr *from, |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 2192 | struct sw_flow_actions **sfa, bool log) |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 2193 | { |
| 2194 | int totlen = NLA_ALIGN(from->nla_len); |
| 2195 | struct nlattr *to; |
| 2196 | |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 2197 | to = reserve_sfa_size(sfa, from->nla_len, log); |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 2198 | if (IS_ERR(to)) |
| 2199 | return PTR_ERR(to); |
| 2200 | |
| 2201 | memcpy(to, from, totlen); |
| 2202 | return 0; |
| 2203 | } |
| 2204 | |
Joe Stringer | 7f8a436 | 2015-08-26 11:31:48 -0700 | [diff] [blame] | 2205 | static int __ovs_nla_copy_actions(struct net *net, const struct nlattr *attr, |
Simon Horman | 25cd9ba | 2014-10-06 05:05:13 -0700 | [diff] [blame] | 2206 | const struct sw_flow_key *key, |
| 2207 | int depth, struct sw_flow_actions **sfa, |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 2208 | __be16 eth_type, __be16 vlan_tci, bool log) |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 2209 | { |
| 2210 | const struct nlattr *a; |
| 2211 | int rem, err; |
| 2212 | |
| 2213 | if (depth >= SAMPLE_ACTION_DEPTH) |
| 2214 | return -EOVERFLOW; |
| 2215 | |
| 2216 | nla_for_each_nested(a, attr, rem) { |
| 2217 | /* Expected argument lengths, (u32)-1 for variable length. */ |
| 2218 | static const u32 action_lens[OVS_ACTION_ATTR_MAX + 1] = { |
| 2219 | [OVS_ACTION_ATTR_OUTPUT] = sizeof(u32), |
Andy Zhou | 971427f3 | 2014-09-15 19:37:25 -0700 | [diff] [blame] | 2220 | [OVS_ACTION_ATTR_RECIRC] = sizeof(u32), |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 2221 | [OVS_ACTION_ATTR_USERSPACE] = (u32)-1, |
Simon Horman | 25cd9ba | 2014-10-06 05:05:13 -0700 | [diff] [blame] | 2222 | [OVS_ACTION_ATTR_PUSH_MPLS] = sizeof(struct ovs_action_push_mpls), |
| 2223 | [OVS_ACTION_ATTR_POP_MPLS] = sizeof(__be16), |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 2224 | [OVS_ACTION_ATTR_PUSH_VLAN] = sizeof(struct ovs_action_push_vlan), |
| 2225 | [OVS_ACTION_ATTR_POP_VLAN] = 0, |
| 2226 | [OVS_ACTION_ATTR_SET] = (u32)-1, |
Jarno Rajahalme | 83d2b9b | 2015-02-05 13:40:49 -0800 | [diff] [blame] | 2227 | [OVS_ACTION_ATTR_SET_MASKED] = (u32)-1, |
Andy Zhou | 971427f3 | 2014-09-15 19:37:25 -0700 | [diff] [blame] | 2228 | [OVS_ACTION_ATTR_SAMPLE] = (u32)-1, |
Joe Stringer | 7f8a436 | 2015-08-26 11:31:48 -0700 | [diff] [blame] | 2229 | [OVS_ACTION_ATTR_HASH] = sizeof(struct ovs_action_hash), |
| 2230 | [OVS_ACTION_ATTR_CT] = (u32)-1, |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 2231 | }; |
| 2232 | const struct ovs_action_push_vlan *vlan; |
| 2233 | int type = nla_type(a); |
| 2234 | bool skip_copy; |
| 2235 | |
| 2236 | if (type > OVS_ACTION_ATTR_MAX || |
| 2237 | (action_lens[type] != nla_len(a) && |
| 2238 | action_lens[type] != (u32)-1)) |
| 2239 | return -EINVAL; |
| 2240 | |
| 2241 | skip_copy = false; |
| 2242 | switch (type) { |
| 2243 | case OVS_ACTION_ATTR_UNSPEC: |
| 2244 | return -EINVAL; |
| 2245 | |
| 2246 | case OVS_ACTION_ATTR_USERSPACE: |
| 2247 | err = validate_userspace(a); |
| 2248 | if (err) |
| 2249 | return err; |
| 2250 | break; |
| 2251 | |
| 2252 | case OVS_ACTION_ATTR_OUTPUT: |
| 2253 | if (nla_get_u32(a) >= DP_MAX_PORTS) |
| 2254 | return -EINVAL; |
| 2255 | break; |
| 2256 | |
Andy Zhou | 971427f3 | 2014-09-15 19:37:25 -0700 | [diff] [blame] | 2257 | case OVS_ACTION_ATTR_HASH: { |
| 2258 | const struct ovs_action_hash *act_hash = nla_data(a); |
| 2259 | |
| 2260 | switch (act_hash->hash_alg) { |
| 2261 | case OVS_HASH_ALG_L4: |
| 2262 | break; |
| 2263 | default: |
| 2264 | return -EINVAL; |
| 2265 | } |
| 2266 | |
| 2267 | break; |
| 2268 | } |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 2269 | |
| 2270 | case OVS_ACTION_ATTR_POP_VLAN: |
Simon Horman | 25cd9ba | 2014-10-06 05:05:13 -0700 | [diff] [blame] | 2271 | vlan_tci = htons(0); |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 2272 | break; |
| 2273 | |
| 2274 | case OVS_ACTION_ATTR_PUSH_VLAN: |
| 2275 | vlan = nla_data(a); |
| 2276 | if (vlan->vlan_tpid != htons(ETH_P_8021Q)) |
| 2277 | return -EINVAL; |
| 2278 | if (!(vlan->vlan_tci & htons(VLAN_TAG_PRESENT))) |
| 2279 | return -EINVAL; |
Simon Horman | 25cd9ba | 2014-10-06 05:05:13 -0700 | [diff] [blame] | 2280 | vlan_tci = vlan->vlan_tci; |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 2281 | break; |
| 2282 | |
Andy Zhou | 971427f3 | 2014-09-15 19:37:25 -0700 | [diff] [blame] | 2283 | case OVS_ACTION_ATTR_RECIRC: |
| 2284 | break; |
| 2285 | |
Simon Horman | 25cd9ba | 2014-10-06 05:05:13 -0700 | [diff] [blame] | 2286 | case OVS_ACTION_ATTR_PUSH_MPLS: { |
| 2287 | const struct ovs_action_push_mpls *mpls = nla_data(a); |
| 2288 | |
Simon Horman | 25cd9ba | 2014-10-06 05:05:13 -0700 | [diff] [blame] | 2289 | if (!eth_p_mpls(mpls->mpls_ethertype)) |
| 2290 | return -EINVAL; |
| 2291 | /* Prohibit push MPLS other than to a white list |
| 2292 | * for packets that have a known tag order. |
| 2293 | */ |
| 2294 | if (vlan_tci & htons(VLAN_TAG_PRESENT) || |
| 2295 | (eth_type != htons(ETH_P_IP) && |
| 2296 | eth_type != htons(ETH_P_IPV6) && |
| 2297 | eth_type != htons(ETH_P_ARP) && |
| 2298 | eth_type != htons(ETH_P_RARP) && |
| 2299 | !eth_p_mpls(eth_type))) |
| 2300 | return -EINVAL; |
| 2301 | eth_type = mpls->mpls_ethertype; |
| 2302 | break; |
| 2303 | } |
| 2304 | |
| 2305 | case OVS_ACTION_ATTR_POP_MPLS: |
| 2306 | if (vlan_tci & htons(VLAN_TAG_PRESENT) || |
| 2307 | !eth_p_mpls(eth_type)) |
| 2308 | return -EINVAL; |
| 2309 | |
| 2310 | /* Disallow subsequent L2.5+ set and mpls_pop actions |
| 2311 | * as there is no check here to ensure that the new |
| 2312 | * eth_type is valid and thus set actions could |
| 2313 | * write off the end of the packet or otherwise |
| 2314 | * corrupt it. |
| 2315 | * |
| 2316 | * Support for these actions is planned using packet |
| 2317 | * recirculation. |
| 2318 | */ |
| 2319 | eth_type = htons(0); |
| 2320 | break; |
| 2321 | |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 2322 | case OVS_ACTION_ATTR_SET: |
Simon Horman | 25cd9ba | 2014-10-06 05:05:13 -0700 | [diff] [blame] | 2323 | err = validate_set(a, key, sfa, |
Jarno Rajahalme | 83d2b9b | 2015-02-05 13:40:49 -0800 | [diff] [blame] | 2324 | &skip_copy, eth_type, false, log); |
| 2325 | if (err) |
| 2326 | return err; |
| 2327 | break; |
| 2328 | |
| 2329 | case OVS_ACTION_ATTR_SET_MASKED: |
| 2330 | err = validate_set(a, key, sfa, |
| 2331 | &skip_copy, eth_type, true, log); |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 2332 | if (err) |
| 2333 | return err; |
| 2334 | break; |
| 2335 | |
| 2336 | case OVS_ACTION_ATTR_SAMPLE: |
Joe Stringer | 7f8a436 | 2015-08-26 11:31:48 -0700 | [diff] [blame] | 2337 | err = validate_and_copy_sample(net, a, key, depth, sfa, |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 2338 | eth_type, vlan_tci, log); |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 2339 | if (err) |
| 2340 | return err; |
| 2341 | skip_copy = true; |
| 2342 | break; |
| 2343 | |
Joe Stringer | 7f8a436 | 2015-08-26 11:31:48 -0700 | [diff] [blame] | 2344 | case OVS_ACTION_ATTR_CT: |
| 2345 | err = ovs_ct_copy_action(net, a, key, sfa, log); |
| 2346 | if (err) |
| 2347 | return err; |
| 2348 | skip_copy = true; |
| 2349 | break; |
| 2350 | |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 2351 | default: |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 2352 | OVS_NLERR(log, "Unknown Action type %d", type); |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 2353 | return -EINVAL; |
| 2354 | } |
| 2355 | if (!skip_copy) { |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 2356 | err = copy_action(a, sfa, log); |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 2357 | if (err) |
| 2358 | return err; |
| 2359 | } |
| 2360 | } |
| 2361 | |
| 2362 | if (rem > 0) |
| 2363 | return -EINVAL; |
| 2364 | |
| 2365 | return 0; |
| 2366 | } |
| 2367 | |
Jarno Rajahalme | 83d2b9b | 2015-02-05 13:40:49 -0800 | [diff] [blame] | 2368 | /* 'key' must be the masked key. */ |
Joe Stringer | 7f8a436 | 2015-08-26 11:31:48 -0700 | [diff] [blame] | 2369 | int ovs_nla_copy_actions(struct net *net, const struct nlattr *attr, |
Simon Horman | 25cd9ba | 2014-10-06 05:05:13 -0700 | [diff] [blame] | 2370 | const struct sw_flow_key *key, |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 2371 | struct sw_flow_actions **sfa, bool log) |
Simon Horman | 25cd9ba | 2014-10-06 05:05:13 -0700 | [diff] [blame] | 2372 | { |
Pravin B Shelar | 2fdb957 | 2014-10-19 11:19:51 -0700 | [diff] [blame] | 2373 | int err; |
| 2374 | |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 2375 | *sfa = nla_alloc_flow_actions(nla_len(attr), log); |
Pravin B Shelar | 2fdb957 | 2014-10-19 11:19:51 -0700 | [diff] [blame] | 2376 | if (IS_ERR(*sfa)) |
| 2377 | return PTR_ERR(*sfa); |
| 2378 | |
Joe Stringer | 8e2fed1 | 2015-08-26 11:31:44 -0700 | [diff] [blame] | 2379 | (*sfa)->orig_len = nla_len(attr); |
Joe Stringer | 7f8a436 | 2015-08-26 11:31:48 -0700 | [diff] [blame] | 2380 | err = __ovs_nla_copy_actions(net, attr, key, 0, sfa, key->eth.type, |
Jarno Rajahalme | 05da589 | 2014-11-06 07:03:05 -0800 | [diff] [blame] | 2381 | key->eth.tci, log); |
Pravin B Shelar | 2fdb957 | 2014-10-19 11:19:51 -0700 | [diff] [blame] | 2382 | if (err) |
Thomas Graf | 34ae932 | 2015-07-21 10:44:03 +0200 | [diff] [blame] | 2383 | ovs_nla_free_flow_actions(*sfa); |
Pravin B Shelar | 2fdb957 | 2014-10-19 11:19:51 -0700 | [diff] [blame] | 2384 | |
| 2385 | return err; |
Simon Horman | 25cd9ba | 2014-10-06 05:05:13 -0700 | [diff] [blame] | 2386 | } |
| 2387 | |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 2388 | static int sample_action_to_attr(const struct nlattr *attr, struct sk_buff *skb) |
| 2389 | { |
| 2390 | const struct nlattr *a; |
| 2391 | struct nlattr *start; |
| 2392 | int err = 0, rem; |
| 2393 | |
| 2394 | start = nla_nest_start(skb, OVS_ACTION_ATTR_SAMPLE); |
| 2395 | if (!start) |
| 2396 | return -EMSGSIZE; |
| 2397 | |
| 2398 | nla_for_each_nested(a, attr, rem) { |
| 2399 | int type = nla_type(a); |
| 2400 | struct nlattr *st_sample; |
| 2401 | |
| 2402 | switch (type) { |
| 2403 | case OVS_SAMPLE_ATTR_PROBABILITY: |
| 2404 | if (nla_put(skb, OVS_SAMPLE_ATTR_PROBABILITY, |
| 2405 | sizeof(u32), nla_data(a))) |
| 2406 | return -EMSGSIZE; |
| 2407 | break; |
| 2408 | case OVS_SAMPLE_ATTR_ACTIONS: |
| 2409 | st_sample = nla_nest_start(skb, OVS_SAMPLE_ATTR_ACTIONS); |
| 2410 | if (!st_sample) |
| 2411 | return -EMSGSIZE; |
| 2412 | err = ovs_nla_put_actions(nla_data(a), nla_len(a), skb); |
| 2413 | if (err) |
| 2414 | return err; |
| 2415 | nla_nest_end(skb, st_sample); |
| 2416 | break; |
| 2417 | } |
| 2418 | } |
| 2419 | |
| 2420 | nla_nest_end(skb, start); |
| 2421 | return err; |
| 2422 | } |
| 2423 | |
| 2424 | static int set_action_to_attr(const struct nlattr *a, struct sk_buff *skb) |
| 2425 | { |
| 2426 | const struct nlattr *ovs_key = nla_data(a); |
| 2427 | int key_type = nla_type(ovs_key); |
| 2428 | struct nlattr *start; |
| 2429 | int err; |
| 2430 | |
| 2431 | switch (key_type) { |
Jesse Gross | f0b128c | 2014-10-03 15:35:31 -0700 | [diff] [blame] | 2432 | case OVS_KEY_ATTR_TUNNEL_INFO: { |
Thomas Graf | 34ae932 | 2015-07-21 10:44:03 +0200 | [diff] [blame] | 2433 | struct ovs_tunnel_info *ovs_tun = nla_data(ovs_key); |
| 2434 | struct ip_tunnel_info *tun_info = &ovs_tun->tun_dst->u.tun_info; |
Jesse Gross | f0b128c | 2014-10-03 15:35:31 -0700 | [diff] [blame] | 2435 | |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 2436 | start = nla_nest_start(skb, OVS_ACTION_ATTR_SET); |
| 2437 | if (!start) |
| 2438 | return -EMSGSIZE; |
| 2439 | |
Simon Horman | e905eab | 2015-12-18 19:43:15 +0900 | [diff] [blame] | 2440 | err = ip_tun_to_nlattr(skb, &tun_info->key, |
| 2441 | ip_tunnel_info_opts(tun_info), |
| 2442 | tun_info->options_len, |
| 2443 | ip_tunnel_info_af(tun_info)); |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 2444 | if (err) |
| 2445 | return err; |
| 2446 | nla_nest_end(skb, start); |
| 2447 | break; |
Jesse Gross | f0b128c | 2014-10-03 15:35:31 -0700 | [diff] [blame] | 2448 | } |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 2449 | default: |
| 2450 | if (nla_put(skb, OVS_ACTION_ATTR_SET, nla_len(a), ovs_key)) |
| 2451 | return -EMSGSIZE; |
| 2452 | break; |
| 2453 | } |
| 2454 | |
| 2455 | return 0; |
| 2456 | } |
| 2457 | |
Jarno Rajahalme | 83d2b9b | 2015-02-05 13:40:49 -0800 | [diff] [blame] | 2458 | static int masked_set_action_to_set_action_attr(const struct nlattr *a, |
| 2459 | struct sk_buff *skb) |
| 2460 | { |
| 2461 | const struct nlattr *ovs_key = nla_data(a); |
Joe Stringer | f4f8e73 | 2015-03-02 18:49:56 -0800 | [diff] [blame] | 2462 | struct nlattr *nla; |
Jarno Rajahalme | 83d2b9b | 2015-02-05 13:40:49 -0800 | [diff] [blame] | 2463 | size_t key_len = nla_len(ovs_key) / 2; |
| 2464 | |
| 2465 | /* Revert the conversion we did from a non-masked set action to |
| 2466 | * masked set action. |
| 2467 | */ |
Joe Stringer | f4f8e73 | 2015-03-02 18:49:56 -0800 | [diff] [blame] | 2468 | nla = nla_nest_start(skb, OVS_ACTION_ATTR_SET); |
| 2469 | if (!nla) |
Jarno Rajahalme | 83d2b9b | 2015-02-05 13:40:49 -0800 | [diff] [blame] | 2470 | return -EMSGSIZE; |
| 2471 | |
Joe Stringer | f4f8e73 | 2015-03-02 18:49:56 -0800 | [diff] [blame] | 2472 | if (nla_put(skb, nla_type(ovs_key), key_len, nla_data(ovs_key))) |
| 2473 | return -EMSGSIZE; |
| 2474 | |
| 2475 | nla_nest_end(skb, nla); |
Jarno Rajahalme | 83d2b9b | 2015-02-05 13:40:49 -0800 | [diff] [blame] | 2476 | return 0; |
| 2477 | } |
| 2478 | |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 2479 | int ovs_nla_put_actions(const struct nlattr *attr, int len, struct sk_buff *skb) |
| 2480 | { |
| 2481 | const struct nlattr *a; |
| 2482 | int rem, err; |
| 2483 | |
| 2484 | nla_for_each_attr(a, attr, len, rem) { |
| 2485 | int type = nla_type(a); |
| 2486 | |
| 2487 | switch (type) { |
| 2488 | case OVS_ACTION_ATTR_SET: |
| 2489 | err = set_action_to_attr(a, skb); |
| 2490 | if (err) |
| 2491 | return err; |
| 2492 | break; |
| 2493 | |
Jarno Rajahalme | 83d2b9b | 2015-02-05 13:40:49 -0800 | [diff] [blame] | 2494 | case OVS_ACTION_ATTR_SET_TO_MASKED: |
| 2495 | err = masked_set_action_to_set_action_attr(a, skb); |
| 2496 | if (err) |
| 2497 | return err; |
| 2498 | break; |
| 2499 | |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 2500 | case OVS_ACTION_ATTR_SAMPLE: |
| 2501 | err = sample_action_to_attr(a, skb); |
| 2502 | if (err) |
| 2503 | return err; |
| 2504 | break; |
Joe Stringer | 7f8a436 | 2015-08-26 11:31:48 -0700 | [diff] [blame] | 2505 | |
| 2506 | case OVS_ACTION_ATTR_CT: |
| 2507 | err = ovs_ct_action_to_attr(nla_data(a), skb); |
| 2508 | if (err) |
| 2509 | return err; |
| 2510 | break; |
| 2511 | |
Pravin B Shelar | e644571 | 2013-10-03 18:16:47 -0700 | [diff] [blame] | 2512 | default: |
| 2513 | if (nla_put(skb, type, nla_len(a), nla_data(a))) |
| 2514 | return -EMSGSIZE; |
| 2515 | break; |
| 2516 | } |
| 2517 | } |
| 2518 | |
| 2519 | return 0; |
| 2520 | } |