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e6445719 | 1 | /* |
798c1661 | 2 | * Copyright (c) 2007-2017 Nicira, Inc. |
e6445719 PS |
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 | ||
2235ad1c JP |
19 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
20 | ||
e6445719 PS |
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> | |
f5796684 | 45 | #include <net/geneve.h> |
e6445719 PS |
46 | #include <net/ip.h> |
47 | #include <net/ipv6.h> | |
48 | #include <net/ndisc.h> | |
25cd9ba0 | 49 | #include <net/mpls.h> |
614732ea | 50 | #include <net/vxlan.h> |
b2d0f5d5 | 51 | #include <net/tun_proto.h> |
e6445719 PS |
52 | |
53 | #include "flow_netlink.h" | |
54 | ||
81bfe3c3 TG |
55 | struct ovs_len_tbl { |
56 | int len; | |
57 | const struct ovs_len_tbl *next; | |
58 | }; | |
59 | ||
60 | #define OVS_ATTR_NESTED -1 | |
982b5270 | 61 | #define OVS_ATTR_VARIABLE -2 |
81bfe3c3 | 62 | |
798c1661 | 63 | static bool actions_may_change_flow(const struct nlattr *actions) |
64 | { | |
65 | struct nlattr *nla; | |
66 | int rem; | |
67 | ||
68 | nla_for_each_nested(nla, actions, rem) { | |
69 | u16 action = nla_type(nla); | |
70 | ||
71 | switch (action) { | |
72 | case OVS_ACTION_ATTR_OUTPUT: | |
73 | case OVS_ACTION_ATTR_RECIRC: | |
74 | case OVS_ACTION_ATTR_TRUNC: | |
75 | case OVS_ACTION_ATTR_USERSPACE: | |
76 | break; | |
77 | ||
78 | case OVS_ACTION_ATTR_CT: | |
b8226962 | 79 | case OVS_ACTION_ATTR_CT_CLEAR: |
798c1661 | 80 | case OVS_ACTION_ATTR_HASH: |
81 | case OVS_ACTION_ATTR_POP_ETH: | |
82 | case OVS_ACTION_ATTR_POP_MPLS: | |
b2d0f5d5 | 83 | case OVS_ACTION_ATTR_POP_NSH: |
798c1661 | 84 | case OVS_ACTION_ATTR_POP_VLAN: |
85 | case OVS_ACTION_ATTR_PUSH_ETH: | |
86 | case OVS_ACTION_ATTR_PUSH_MPLS: | |
b2d0f5d5 | 87 | case OVS_ACTION_ATTR_PUSH_NSH: |
798c1661 | 88 | case OVS_ACTION_ATTR_PUSH_VLAN: |
89 | case OVS_ACTION_ATTR_SAMPLE: | |
90 | case OVS_ACTION_ATTR_SET: | |
91 | case OVS_ACTION_ATTR_SET_MASKED: | |
cd8a6c33 | 92 | case OVS_ACTION_ATTR_METER: |
798c1661 | 93 | default: |
94 | return true; | |
95 | } | |
96 | } | |
97 | return false; | |
98 | } | |
99 | ||
a85311bf PS |
100 | static void update_range(struct sw_flow_match *match, |
101 | size_t offset, size_t size, bool is_mask) | |
e6445719 | 102 | { |
a85311bf | 103 | struct sw_flow_key_range *range; |
e6445719 PS |
104 | size_t start = rounddown(offset, sizeof(long)); |
105 | size_t end = roundup(offset + size, sizeof(long)); | |
106 | ||
107 | if (!is_mask) | |
108 | range = &match->range; | |
a85311bf | 109 | else |
e6445719 PS |
110 | range = &match->mask->range; |
111 | ||
e6445719 PS |
112 | if (range->start == range->end) { |
113 | range->start = start; | |
114 | range->end = end; | |
115 | return; | |
116 | } | |
117 | ||
118 | if (range->start > start) | |
119 | range->start = start; | |
120 | ||
121 | if (range->end < end) | |
122 | range->end = end; | |
123 | } | |
124 | ||
125 | #define SW_FLOW_KEY_PUT(match, field, value, is_mask) \ | |
126 | do { \ | |
a85311bf PS |
127 | update_range(match, offsetof(struct sw_flow_key, field), \ |
128 | sizeof((match)->key->field), is_mask); \ | |
129 | if (is_mask) \ | |
130 | (match)->mask->key.field = value; \ | |
131 | else \ | |
e6445719 | 132 | (match)->key->field = value; \ |
e6445719 PS |
133 | } while (0) |
134 | ||
f5796684 JG |
135 | #define SW_FLOW_KEY_MEMCPY_OFFSET(match, offset, value_p, len, is_mask) \ |
136 | do { \ | |
a85311bf | 137 | update_range(match, offset, len, is_mask); \ |
f5796684 JG |
138 | if (is_mask) \ |
139 | memcpy((u8 *)&(match)->mask->key + offset, value_p, \ | |
a85311bf | 140 | len); \ |
f5796684 JG |
141 | else \ |
142 | memcpy((u8 *)(match)->key + offset, value_p, len); \ | |
e6445719 PS |
143 | } while (0) |
144 | ||
f5796684 JG |
145 | #define SW_FLOW_KEY_MEMCPY(match, field, value_p, len, is_mask) \ |
146 | SW_FLOW_KEY_MEMCPY_OFFSET(match, offsetof(struct sw_flow_key, field), \ | |
147 | value_p, len, is_mask) | |
148 | ||
a85311bf PS |
149 | #define SW_FLOW_KEY_MEMSET_FIELD(match, field, value, is_mask) \ |
150 | do { \ | |
151 | update_range(match, offsetof(struct sw_flow_key, field), \ | |
152 | sizeof((match)->key->field), is_mask); \ | |
153 | if (is_mask) \ | |
154 | memset((u8 *)&(match)->mask->key.field, value, \ | |
155 | sizeof((match)->mask->key.field)); \ | |
156 | else \ | |
f47de068 PS |
157 | memset((u8 *)&(match)->key->field, value, \ |
158 | sizeof((match)->key->field)); \ | |
f47de068 | 159 | } while (0) |
e6445719 PS |
160 | |
161 | static bool match_validate(const struct sw_flow_match *match, | |
05da5898 | 162 | u64 key_attrs, u64 mask_attrs, bool log) |
e6445719 | 163 | { |
0a6410fb | 164 | u64 key_expected = 0; |
e6445719 PS |
165 | u64 mask_allowed = key_attrs; /* At most allow all key attributes */ |
166 | ||
167 | /* The following mask attributes allowed only if they | |
168 | * pass the validation tests. */ | |
169 | mask_allowed &= ~((1 << OVS_KEY_ATTR_IPV4) | |
9dd7f890 | 170 | | (1 << OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV4) |
e6445719 | 171 | | (1 << OVS_KEY_ATTR_IPV6) |
9dd7f890 | 172 | | (1 << OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV6) |
e6445719 | 173 | | (1 << OVS_KEY_ATTR_TCP) |
5eb26b15 | 174 | | (1 << OVS_KEY_ATTR_TCP_FLAGS) |
e6445719 PS |
175 | | (1 << OVS_KEY_ATTR_UDP) |
176 | | (1 << OVS_KEY_ATTR_SCTP) | |
177 | | (1 << OVS_KEY_ATTR_ICMP) | |
178 | | (1 << OVS_KEY_ATTR_ICMPV6) | |
179 | | (1 << OVS_KEY_ATTR_ARP) | |
25cd9ba0 | 180 | | (1 << OVS_KEY_ATTR_ND) |
b2d0f5d5 YY |
181 | | (1 << OVS_KEY_ATTR_MPLS) |
182 | | (1 << OVS_KEY_ATTR_NSH)); | |
e6445719 PS |
183 | |
184 | /* Always allowed mask fields. */ | |
185 | mask_allowed |= ((1 << OVS_KEY_ATTR_TUNNEL) | |
186 | | (1 << OVS_KEY_ATTR_IN_PORT) | |
187 | | (1 << OVS_KEY_ATTR_ETHERTYPE)); | |
188 | ||
189 | /* Check key attributes. */ | |
190 | if (match->key->eth.type == htons(ETH_P_ARP) | |
191 | || match->key->eth.type == htons(ETH_P_RARP)) { | |
192 | key_expected |= 1 << OVS_KEY_ATTR_ARP; | |
f2a01517 | 193 | if (match->mask && (match->mask->key.eth.type == htons(0xffff))) |
e6445719 PS |
194 | mask_allowed |= 1 << OVS_KEY_ATTR_ARP; |
195 | } | |
196 | ||
25cd9ba0 SH |
197 | if (eth_p_mpls(match->key->eth.type)) { |
198 | key_expected |= 1 << OVS_KEY_ATTR_MPLS; | |
199 | if (match->mask && (match->mask->key.eth.type == htons(0xffff))) | |
200 | mask_allowed |= 1 << OVS_KEY_ATTR_MPLS; | |
201 | } | |
202 | ||
e6445719 PS |
203 | if (match->key->eth.type == htons(ETH_P_IP)) { |
204 | key_expected |= 1 << OVS_KEY_ATTR_IPV4; | |
9dd7f890 | 205 | if (match->mask && match->mask->key.eth.type == htons(0xffff)) { |
e6445719 | 206 | mask_allowed |= 1 << OVS_KEY_ATTR_IPV4; |
9dd7f890 JR |
207 | mask_allowed |= 1 << OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV4; |
208 | } | |
e6445719 PS |
209 | |
210 | if (match->key->ip.frag != OVS_FRAG_TYPE_LATER) { | |
211 | if (match->key->ip.proto == IPPROTO_UDP) { | |
212 | key_expected |= 1 << OVS_KEY_ATTR_UDP; | |
213 | if (match->mask && (match->mask->key.ip.proto == 0xff)) | |
214 | mask_allowed |= 1 << OVS_KEY_ATTR_UDP; | |
215 | } | |
216 | ||
217 | if (match->key->ip.proto == IPPROTO_SCTP) { | |
218 | key_expected |= 1 << OVS_KEY_ATTR_SCTP; | |
219 | if (match->mask && (match->mask->key.ip.proto == 0xff)) | |
220 | mask_allowed |= 1 << OVS_KEY_ATTR_SCTP; | |
221 | } | |
222 | ||
223 | if (match->key->ip.proto == IPPROTO_TCP) { | |
224 | key_expected |= 1 << OVS_KEY_ATTR_TCP; | |
5eb26b15 JR |
225 | key_expected |= 1 << OVS_KEY_ATTR_TCP_FLAGS; |
226 | if (match->mask && (match->mask->key.ip.proto == 0xff)) { | |
e6445719 | 227 | mask_allowed |= 1 << OVS_KEY_ATTR_TCP; |
5eb26b15 JR |
228 | mask_allowed |= 1 << OVS_KEY_ATTR_TCP_FLAGS; |
229 | } | |
e6445719 PS |
230 | } |
231 | ||
232 | if (match->key->ip.proto == IPPROTO_ICMP) { | |
233 | key_expected |= 1 << OVS_KEY_ATTR_ICMP; | |
234 | if (match->mask && (match->mask->key.ip.proto == 0xff)) | |
235 | mask_allowed |= 1 << OVS_KEY_ATTR_ICMP; | |
236 | } | |
237 | } | |
238 | } | |
239 | ||
240 | if (match->key->eth.type == htons(ETH_P_IPV6)) { | |
241 | key_expected |= 1 << OVS_KEY_ATTR_IPV6; | |
9dd7f890 | 242 | if (match->mask && match->mask->key.eth.type == htons(0xffff)) { |
e6445719 | 243 | mask_allowed |= 1 << OVS_KEY_ATTR_IPV6; |
9dd7f890 JR |
244 | mask_allowed |= 1 << OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV6; |
245 | } | |
e6445719 PS |
246 | |
247 | if (match->key->ip.frag != OVS_FRAG_TYPE_LATER) { | |
248 | if (match->key->ip.proto == IPPROTO_UDP) { | |
249 | key_expected |= 1 << OVS_KEY_ATTR_UDP; | |
250 | if (match->mask && (match->mask->key.ip.proto == 0xff)) | |
251 | mask_allowed |= 1 << OVS_KEY_ATTR_UDP; | |
252 | } | |
253 | ||
254 | if (match->key->ip.proto == IPPROTO_SCTP) { | |
255 | key_expected |= 1 << OVS_KEY_ATTR_SCTP; | |
256 | if (match->mask && (match->mask->key.ip.proto == 0xff)) | |
257 | mask_allowed |= 1 << OVS_KEY_ATTR_SCTP; | |
258 | } | |
259 | ||
260 | if (match->key->ip.proto == IPPROTO_TCP) { | |
261 | key_expected |= 1 << OVS_KEY_ATTR_TCP; | |
5eb26b15 JR |
262 | key_expected |= 1 << OVS_KEY_ATTR_TCP_FLAGS; |
263 | if (match->mask && (match->mask->key.ip.proto == 0xff)) { | |
e6445719 | 264 | mask_allowed |= 1 << OVS_KEY_ATTR_TCP; |
5eb26b15 JR |
265 | mask_allowed |= 1 << OVS_KEY_ATTR_TCP_FLAGS; |
266 | } | |
e6445719 PS |
267 | } |
268 | ||
269 | if (match->key->ip.proto == IPPROTO_ICMPV6) { | |
270 | key_expected |= 1 << OVS_KEY_ATTR_ICMPV6; | |
271 | if (match->mask && (match->mask->key.ip.proto == 0xff)) | |
272 | mask_allowed |= 1 << OVS_KEY_ATTR_ICMPV6; | |
273 | ||
1139e241 | 274 | if (match->key->tp.src == |
e6445719 | 275 | htons(NDISC_NEIGHBOUR_SOLICITATION) || |
1139e241 | 276 | match->key->tp.src == htons(NDISC_NEIGHBOUR_ADVERTISEMENT)) { |
e6445719 | 277 | key_expected |= 1 << OVS_KEY_ATTR_ND; |
9dd7f890 JR |
278 | /* Original direction conntrack tuple |
279 | * uses the same space as the ND fields | |
280 | * in the key, so both are not allowed | |
281 | * at the same time. | |
282 | */ | |
283 | mask_allowed &= ~(1ULL << OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV6); | |
f2a01517 | 284 | if (match->mask && (match->mask->key.tp.src == htons(0xff))) |
e6445719 PS |
285 | mask_allowed |= 1 << OVS_KEY_ATTR_ND; |
286 | } | |
287 | } | |
288 | } | |
289 | } | |
290 | ||
b2d0f5d5 YY |
291 | if (match->key->eth.type == htons(ETH_P_NSH)) { |
292 | key_expected |= 1 << OVS_KEY_ATTR_NSH; | |
293 | if (match->mask && | |
294 | match->mask->key.eth.type == htons(0xffff)) { | |
295 | mask_allowed |= 1 << OVS_KEY_ATTR_NSH; | |
296 | } | |
297 | } | |
298 | ||
e6445719 PS |
299 | if ((key_attrs & key_expected) != key_expected) { |
300 | /* Key attributes check failed. */ | |
05da5898 JR |
301 | OVS_NLERR(log, "Missing key (keys=%llx, expected=%llx)", |
302 | (unsigned long long)key_attrs, | |
303 | (unsigned long long)key_expected); | |
e6445719 PS |
304 | return false; |
305 | } | |
306 | ||
307 | if ((mask_attrs & mask_allowed) != mask_attrs) { | |
308 | /* Mask attributes check failed. */ | |
05da5898 JR |
309 | OVS_NLERR(log, "Unexpected mask (mask=%llx, allowed=%llx)", |
310 | (unsigned long long)mask_attrs, | |
311 | (unsigned long long)mask_allowed); | |
e6445719 PS |
312 | return false; |
313 | } | |
314 | ||
315 | return true; | |
316 | } | |
317 | ||
8f0aad6f WZ |
318 | size_t ovs_tun_key_attr_size(void) |
319 | { | |
320 | /* Whenever adding new OVS_TUNNEL_KEY_ FIELDS, we should consider | |
321 | * updating this function. | |
322 | */ | |
b46f6ded | 323 | return nla_total_size_64bit(8) /* OVS_TUNNEL_KEY_ATTR_ID */ |
6b26ba3a JB |
324 | + nla_total_size(16) /* OVS_TUNNEL_KEY_ATTR_IPV[46]_SRC */ |
325 | + nla_total_size(16) /* OVS_TUNNEL_KEY_ATTR_IPV[46]_DST */ | |
8f0aad6f WZ |
326 | + nla_total_size(1) /* OVS_TUNNEL_KEY_ATTR_TOS */ |
327 | + nla_total_size(1) /* OVS_TUNNEL_KEY_ATTR_TTL */ | |
328 | + nla_total_size(0) /* OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT */ | |
329 | + nla_total_size(0) /* OVS_TUNNEL_KEY_ATTR_CSUM */ | |
330 | + nla_total_size(0) /* OVS_TUNNEL_KEY_ATTR_OAM */ | |
331 | + nla_total_size(256) /* OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS */ | |
1dd144cf TG |
332 | /* OVS_TUNNEL_KEY_ATTR_VXLAN_OPTS is mutually exclusive with |
333 | * OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS and covered by it. | |
334 | */ | |
8f0aad6f | 335 | + nla_total_size(2) /* OVS_TUNNEL_KEY_ATTR_TP_SRC */ |
95a33208 | 336 | + nla_total_size(2); /* OVS_TUNNEL_KEY_ATTR_TP_DST */ |
8f0aad6f WZ |
337 | } |
338 | ||
06c2351f | 339 | static size_t ovs_nsh_key_attr_size(void) |
b2d0f5d5 YY |
340 | { |
341 | /* Whenever adding new OVS_NSH_KEY_ FIELDS, we should consider | |
342 | * updating this function. | |
343 | */ | |
344 | return nla_total_size(NSH_BASE_HDR_LEN) /* OVS_NSH_KEY_ATTR_BASE */ | |
345 | /* OVS_NSH_KEY_ATTR_MD1 and OVS_NSH_KEY_ATTR_MD2 are | |
346 | * mutually exclusive, so the bigger one can cover | |
347 | * the small one. | |
348 | */ | |
349 | + nla_total_size(NSH_CTX_HDRS_MAX_LEN); | |
350 | } | |
351 | ||
41af73e9 JS |
352 | size_t ovs_key_attr_size(void) |
353 | { | |
354 | /* Whenever adding new OVS_KEY_ FIELDS, we should consider | |
355 | * updating this function. | |
356 | */ | |
b2d0f5d5 | 357 | BUILD_BUG_ON(OVS_KEY_ATTR_TUNNEL_INFO != 29); |
41af73e9 JS |
358 | |
359 | return nla_total_size(4) /* OVS_KEY_ATTR_PRIORITY */ | |
360 | + nla_total_size(0) /* OVS_KEY_ATTR_TUNNEL */ | |
8f0aad6f | 361 | + ovs_tun_key_attr_size() |
41af73e9 JS |
362 | + nla_total_size(4) /* OVS_KEY_ATTR_IN_PORT */ |
363 | + nla_total_size(4) /* OVS_KEY_ATTR_SKB_MARK */ | |
364 | + nla_total_size(4) /* OVS_KEY_ATTR_DP_HASH */ | |
365 | + nla_total_size(4) /* OVS_KEY_ATTR_RECIRC_ID */ | |
fbccce59 | 366 | + nla_total_size(4) /* OVS_KEY_ATTR_CT_STATE */ |
7f8a436e | 367 | + nla_total_size(2) /* OVS_KEY_ATTR_CT_ZONE */ |
182e3042 | 368 | + nla_total_size(4) /* OVS_KEY_ATTR_CT_MARK */ |
33db4125 | 369 | + nla_total_size(16) /* OVS_KEY_ATTR_CT_LABELS */ |
9dd7f890 | 370 | + nla_total_size(40) /* OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV6 */ |
b2d0f5d5 YY |
371 | + nla_total_size(0) /* OVS_KEY_ATTR_NSH */ |
372 | + ovs_nsh_key_attr_size() | |
41af73e9 JS |
373 | + nla_total_size(12) /* OVS_KEY_ATTR_ETHERNET */ |
374 | + nla_total_size(2) /* OVS_KEY_ATTR_ETHERTYPE */ | |
375 | + nla_total_size(4) /* OVS_KEY_ATTR_VLAN */ | |
376 | + nla_total_size(0) /* OVS_KEY_ATTR_ENCAP */ | |
377 | + nla_total_size(2) /* OVS_KEY_ATTR_ETHERTYPE */ | |
378 | + nla_total_size(40) /* OVS_KEY_ATTR_IPV6 */ | |
379 | + nla_total_size(2) /* OVS_KEY_ATTR_ICMPV6 */ | |
380 | + nla_total_size(28); /* OVS_KEY_ATTR_ND */ | |
381 | } | |
382 | ||
982b5270 JG |
383 | static const struct ovs_len_tbl ovs_vxlan_ext_key_lens[OVS_VXLAN_EXT_MAX + 1] = { |
384 | [OVS_VXLAN_EXT_GBP] = { .len = sizeof(u32) }, | |
385 | }; | |
386 | ||
81bfe3c3 TG |
387 | static const struct ovs_len_tbl ovs_tunnel_key_lens[OVS_TUNNEL_KEY_ATTR_MAX + 1] = { |
388 | [OVS_TUNNEL_KEY_ATTR_ID] = { .len = sizeof(u64) }, | |
389 | [OVS_TUNNEL_KEY_ATTR_IPV4_SRC] = { .len = sizeof(u32) }, | |
390 | [OVS_TUNNEL_KEY_ATTR_IPV4_DST] = { .len = sizeof(u32) }, | |
391 | [OVS_TUNNEL_KEY_ATTR_TOS] = { .len = 1 }, | |
392 | [OVS_TUNNEL_KEY_ATTR_TTL] = { .len = 1 }, | |
393 | [OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT] = { .len = 0 }, | |
394 | [OVS_TUNNEL_KEY_ATTR_CSUM] = { .len = 0 }, | |
395 | [OVS_TUNNEL_KEY_ATTR_TP_SRC] = { .len = sizeof(u16) }, | |
396 | [OVS_TUNNEL_KEY_ATTR_TP_DST] = { .len = sizeof(u16) }, | |
397 | [OVS_TUNNEL_KEY_ATTR_OAM] = { .len = 0 }, | |
982b5270 JG |
398 | [OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS] = { .len = OVS_ATTR_VARIABLE }, |
399 | [OVS_TUNNEL_KEY_ATTR_VXLAN_OPTS] = { .len = OVS_ATTR_NESTED, | |
400 | .next = ovs_vxlan_ext_key_lens }, | |
6b26ba3a JB |
401 | [OVS_TUNNEL_KEY_ATTR_IPV6_SRC] = { .len = sizeof(struct in6_addr) }, |
402 | [OVS_TUNNEL_KEY_ATTR_IPV6_DST] = { .len = sizeof(struct in6_addr) }, | |
81bfe3c3 TG |
403 | }; |
404 | ||
b2d0f5d5 YY |
405 | static const struct ovs_len_tbl |
406 | ovs_nsh_key_attr_lens[OVS_NSH_KEY_ATTR_MAX + 1] = { | |
407 | [OVS_NSH_KEY_ATTR_BASE] = { .len = sizeof(struct ovs_nsh_key_base) }, | |
408 | [OVS_NSH_KEY_ATTR_MD1] = { .len = sizeof(struct ovs_nsh_key_md1) }, | |
409 | [OVS_NSH_KEY_ATTR_MD2] = { .len = OVS_ATTR_VARIABLE }, | |
410 | }; | |
411 | ||
e6445719 | 412 | /* The size of the argument for each %OVS_KEY_ATTR_* Netlink attribute. */ |
81bfe3c3 TG |
413 | static const struct ovs_len_tbl ovs_key_lens[OVS_KEY_ATTR_MAX + 1] = { |
414 | [OVS_KEY_ATTR_ENCAP] = { .len = OVS_ATTR_NESTED }, | |
415 | [OVS_KEY_ATTR_PRIORITY] = { .len = sizeof(u32) }, | |
416 | [OVS_KEY_ATTR_IN_PORT] = { .len = sizeof(u32) }, | |
417 | [OVS_KEY_ATTR_SKB_MARK] = { .len = sizeof(u32) }, | |
418 | [OVS_KEY_ATTR_ETHERNET] = { .len = sizeof(struct ovs_key_ethernet) }, | |
419 | [OVS_KEY_ATTR_VLAN] = { .len = sizeof(__be16) }, | |
420 | [OVS_KEY_ATTR_ETHERTYPE] = { .len = sizeof(__be16) }, | |
421 | [OVS_KEY_ATTR_IPV4] = { .len = sizeof(struct ovs_key_ipv4) }, | |
422 | [OVS_KEY_ATTR_IPV6] = { .len = sizeof(struct ovs_key_ipv6) }, | |
423 | [OVS_KEY_ATTR_TCP] = { .len = sizeof(struct ovs_key_tcp) }, | |
424 | [OVS_KEY_ATTR_TCP_FLAGS] = { .len = sizeof(__be16) }, | |
425 | [OVS_KEY_ATTR_UDP] = { .len = sizeof(struct ovs_key_udp) }, | |
426 | [OVS_KEY_ATTR_SCTP] = { .len = sizeof(struct ovs_key_sctp) }, | |
427 | [OVS_KEY_ATTR_ICMP] = { .len = sizeof(struct ovs_key_icmp) }, | |
428 | [OVS_KEY_ATTR_ICMPV6] = { .len = sizeof(struct ovs_key_icmpv6) }, | |
429 | [OVS_KEY_ATTR_ARP] = { .len = sizeof(struct ovs_key_arp) }, | |
430 | [OVS_KEY_ATTR_ND] = { .len = sizeof(struct ovs_key_nd) }, | |
431 | [OVS_KEY_ATTR_RECIRC_ID] = { .len = sizeof(u32) }, | |
432 | [OVS_KEY_ATTR_DP_HASH] = { .len = sizeof(u32) }, | |
433 | [OVS_KEY_ATTR_TUNNEL] = { .len = OVS_ATTR_NESTED, | |
434 | .next = ovs_tunnel_key_lens, }, | |
435 | [OVS_KEY_ATTR_MPLS] = { .len = sizeof(struct ovs_key_mpls) }, | |
fbccce59 | 436 | [OVS_KEY_ATTR_CT_STATE] = { .len = sizeof(u32) }, |
7f8a436e | 437 | [OVS_KEY_ATTR_CT_ZONE] = { .len = sizeof(u16) }, |
182e3042 | 438 | [OVS_KEY_ATTR_CT_MARK] = { .len = sizeof(u32) }, |
33db4125 | 439 | [OVS_KEY_ATTR_CT_LABELS] = { .len = sizeof(struct ovs_key_ct_labels) }, |
9dd7f890 JR |
440 | [OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV4] = { |
441 | .len = sizeof(struct ovs_key_ct_tuple_ipv4) }, | |
442 | [OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV6] = { | |
443 | .len = sizeof(struct ovs_key_ct_tuple_ipv6) }, | |
b2d0f5d5 YY |
444 | [OVS_KEY_ATTR_NSH] = { .len = OVS_ATTR_NESTED, |
445 | .next = ovs_nsh_key_attr_lens, }, | |
e6445719 PS |
446 | }; |
447 | ||
982b5270 JG |
448 | static bool check_attr_len(unsigned int attr_len, unsigned int expected_len) |
449 | { | |
450 | return expected_len == attr_len || | |
451 | expected_len == OVS_ATTR_NESTED || | |
452 | expected_len == OVS_ATTR_VARIABLE; | |
453 | } | |
454 | ||
e6445719 PS |
455 | static bool is_all_zero(const u8 *fp, size_t size) |
456 | { | |
457 | int i; | |
458 | ||
459 | if (!fp) | |
460 | return false; | |
461 | ||
462 | for (i = 0; i < size; i++) | |
463 | if (fp[i]) | |
464 | return false; | |
465 | ||
466 | return true; | |
467 | } | |
468 | ||
469 | static int __parse_flow_nlattrs(const struct nlattr *attr, | |
470 | const struct nlattr *a[], | |
05da5898 | 471 | u64 *attrsp, bool log, bool nz) |
e6445719 PS |
472 | { |
473 | const struct nlattr *nla; | |
474 | u64 attrs; | |
475 | int rem; | |
476 | ||
477 | attrs = *attrsp; | |
478 | nla_for_each_nested(nla, attr, rem) { | |
479 | u16 type = nla_type(nla); | |
480 | int expected_len; | |
481 | ||
482 | if (type > OVS_KEY_ATTR_MAX) { | |
05da5898 | 483 | OVS_NLERR(log, "Key type %d is out of range max %d", |
e6445719 PS |
484 | type, OVS_KEY_ATTR_MAX); |
485 | return -EINVAL; | |
486 | } | |
487 | ||
488 | if (attrs & (1 << type)) { | |
05da5898 | 489 | OVS_NLERR(log, "Duplicate key (type %d).", type); |
e6445719 PS |
490 | return -EINVAL; |
491 | } | |
492 | ||
81bfe3c3 | 493 | expected_len = ovs_key_lens[type].len; |
982b5270 | 494 | if (!check_attr_len(nla_len(nla), expected_len)) { |
05da5898 JR |
495 | OVS_NLERR(log, "Key %d has unexpected len %d expected %d", |
496 | type, nla_len(nla), expected_len); | |
e6445719 PS |
497 | return -EINVAL; |
498 | } | |
499 | ||
500 | if (!nz || !is_all_zero(nla_data(nla), expected_len)) { | |
501 | attrs |= 1 << type; | |
502 | a[type] = nla; | |
503 | } | |
504 | } | |
505 | if (rem) { | |
05da5898 | 506 | OVS_NLERR(log, "Message has %d unknown bytes.", rem); |
e6445719 PS |
507 | return -EINVAL; |
508 | } | |
509 | ||
510 | *attrsp = attrs; | |
511 | return 0; | |
512 | } | |
513 | ||
514 | static int parse_flow_mask_nlattrs(const struct nlattr *attr, | |
05da5898 JR |
515 | const struct nlattr *a[], u64 *attrsp, |
516 | bool log) | |
e6445719 | 517 | { |
05da5898 | 518 | return __parse_flow_nlattrs(attr, a, attrsp, log, true); |
e6445719 PS |
519 | } |
520 | ||
9dd7f890 JR |
521 | int parse_flow_nlattrs(const struct nlattr *attr, const struct nlattr *a[], |
522 | u64 *attrsp, bool log) | |
e6445719 | 523 | { |
05da5898 JR |
524 | return __parse_flow_nlattrs(attr, a, attrsp, log, false); |
525 | } | |
526 | ||
527 | static int genev_tun_opt_from_nlattr(const struct nlattr *a, | |
528 | struct sw_flow_match *match, bool is_mask, | |
529 | bool log) | |
530 | { | |
531 | unsigned long opt_key_offset; | |
532 | ||
533 | if (nla_len(a) > sizeof(match->key->tun_opts)) { | |
534 | OVS_NLERR(log, "Geneve option length err (len %d, max %zu).", | |
535 | nla_len(a), sizeof(match->key->tun_opts)); | |
536 | return -EINVAL; | |
537 | } | |
538 | ||
539 | if (nla_len(a) % 4 != 0) { | |
540 | OVS_NLERR(log, "Geneve opt len %d is not a multiple of 4.", | |
541 | nla_len(a)); | |
542 | return -EINVAL; | |
543 | } | |
544 | ||
545 | /* We need to record the length of the options passed | |
546 | * down, otherwise packets with the same format but | |
547 | * additional options will be silently matched. | |
548 | */ | |
549 | if (!is_mask) { | |
550 | SW_FLOW_KEY_PUT(match, tun_opts_len, nla_len(a), | |
551 | false); | |
552 | } else { | |
553 | /* This is somewhat unusual because it looks at | |
554 | * both the key and mask while parsing the | |
555 | * attributes (and by extension assumes the key | |
556 | * is parsed first). Normally, we would verify | |
557 | * that each is the correct length and that the | |
558 | * attributes line up in the validate function. | |
559 | * However, that is difficult because this is | |
560 | * variable length and we won't have the | |
561 | * information later. | |
562 | */ | |
563 | if (match->key->tun_opts_len != nla_len(a)) { | |
564 | OVS_NLERR(log, "Geneve option len %d != mask len %d", | |
565 | match->key->tun_opts_len, nla_len(a)); | |
566 | return -EINVAL; | |
567 | } | |
568 | ||
569 | SW_FLOW_KEY_PUT(match, tun_opts_len, 0xff, true); | |
570 | } | |
571 | ||
d91641d9 | 572 | opt_key_offset = TUN_METADATA_OFFSET(nla_len(a)); |
05da5898 JR |
573 | SW_FLOW_KEY_MEMCPY_OFFSET(match, opt_key_offset, nla_data(a), |
574 | nla_len(a), is_mask); | |
575 | return 0; | |
e6445719 PS |
576 | } |
577 | ||
982b5270 | 578 | static int vxlan_tun_opt_from_nlattr(const struct nlattr *attr, |
1dd144cf TG |
579 | struct sw_flow_match *match, bool is_mask, |
580 | bool log) | |
581 | { | |
982b5270 JG |
582 | struct nlattr *a; |
583 | int rem; | |
1dd144cf | 584 | unsigned long opt_key_offset; |
614732ea | 585 | struct vxlan_metadata opts; |
1dd144cf TG |
586 | |
587 | BUILD_BUG_ON(sizeof(opts) > sizeof(match->key->tun_opts)); | |
588 | ||
1dd144cf | 589 | memset(&opts, 0, sizeof(opts)); |
982b5270 JG |
590 | nla_for_each_nested(a, attr, rem) { |
591 | int type = nla_type(a); | |
1dd144cf | 592 | |
982b5270 JG |
593 | if (type > OVS_VXLAN_EXT_MAX) { |
594 | OVS_NLERR(log, "VXLAN extension %d out of range max %d", | |
595 | type, OVS_VXLAN_EXT_MAX); | |
596 | return -EINVAL; | |
597 | } | |
598 | ||
599 | if (!check_attr_len(nla_len(a), | |
600 | ovs_vxlan_ext_key_lens[type].len)) { | |
601 | OVS_NLERR(log, "VXLAN extension %d has unexpected len %d expected %d", | |
602 | type, nla_len(a), | |
603 | ovs_vxlan_ext_key_lens[type].len); | |
604 | return -EINVAL; | |
605 | } | |
606 | ||
607 | switch (type) { | |
608 | case OVS_VXLAN_EXT_GBP: | |
609 | opts.gbp = nla_get_u32(a); | |
610 | break; | |
611 | default: | |
612 | OVS_NLERR(log, "Unknown VXLAN extension attribute %d", | |
613 | type); | |
614 | return -EINVAL; | |
615 | } | |
616 | } | |
617 | if (rem) { | |
618 | OVS_NLERR(log, "VXLAN extension message has %d unknown bytes.", | |
619 | rem); | |
620 | return -EINVAL; | |
621 | } | |
1dd144cf TG |
622 | |
623 | if (!is_mask) | |
624 | SW_FLOW_KEY_PUT(match, tun_opts_len, sizeof(opts), false); | |
625 | else | |
626 | SW_FLOW_KEY_PUT(match, tun_opts_len, 0xff, true); | |
627 | ||
628 | opt_key_offset = TUN_METADATA_OFFSET(sizeof(opts)); | |
629 | SW_FLOW_KEY_MEMCPY_OFFSET(match, opt_key_offset, &opts, sizeof(opts), | |
630 | is_mask); | |
631 | return 0; | |
632 | } | |
633 | ||
6b26ba3a JB |
634 | static int ip_tun_from_nlattr(const struct nlattr *attr, |
635 | struct sw_flow_match *match, bool is_mask, | |
636 | bool log) | |
e6445719 | 637 | { |
99e28f18 PS |
638 | bool ttl = false, ipv4 = false, ipv6 = false; |
639 | __be16 tun_flags = 0; | |
640 | int opts_type = 0; | |
e6445719 PS |
641 | struct nlattr *a; |
642 | int rem; | |
e6445719 PS |
643 | |
644 | nla_for_each_nested(a, attr, rem) { | |
645 | int type = nla_type(a); | |
05da5898 JR |
646 | int err; |
647 | ||
e6445719 | 648 | if (type > OVS_TUNNEL_KEY_ATTR_MAX) { |
05da5898 JR |
649 | OVS_NLERR(log, "Tunnel attr %d out of range max %d", |
650 | type, OVS_TUNNEL_KEY_ATTR_MAX); | |
e6445719 PS |
651 | return -EINVAL; |
652 | } | |
653 | ||
982b5270 JG |
654 | if (!check_attr_len(nla_len(a), |
655 | ovs_tunnel_key_lens[type].len)) { | |
05da5898 | 656 | OVS_NLERR(log, "Tunnel attr %d has unexpected len %d expected %d", |
81bfe3c3 | 657 | type, nla_len(a), ovs_tunnel_key_lens[type].len); |
e6445719 PS |
658 | return -EINVAL; |
659 | } | |
660 | ||
661 | switch (type) { | |
662 | case OVS_TUNNEL_KEY_ATTR_ID: | |
663 | SW_FLOW_KEY_PUT(match, tun_key.tun_id, | |
664 | nla_get_be64(a), is_mask); | |
665 | tun_flags |= TUNNEL_KEY; | |
666 | break; | |
667 | case OVS_TUNNEL_KEY_ATTR_IPV4_SRC: | |
c1ea5d67 | 668 | SW_FLOW_KEY_PUT(match, tun_key.u.ipv4.src, |
67b61f6c | 669 | nla_get_in_addr(a), is_mask); |
6b26ba3a | 670 | ipv4 = true; |
e6445719 PS |
671 | break; |
672 | case OVS_TUNNEL_KEY_ATTR_IPV4_DST: | |
c1ea5d67 | 673 | SW_FLOW_KEY_PUT(match, tun_key.u.ipv4.dst, |
67b61f6c | 674 | nla_get_in_addr(a), is_mask); |
6b26ba3a JB |
675 | ipv4 = true; |
676 | break; | |
677 | case OVS_TUNNEL_KEY_ATTR_IPV6_SRC: | |
3d20f1f7 | 678 | SW_FLOW_KEY_PUT(match, tun_key.u.ipv6.src, |
6b26ba3a JB |
679 | nla_get_in6_addr(a), is_mask); |
680 | ipv6 = true; | |
681 | break; | |
682 | case OVS_TUNNEL_KEY_ATTR_IPV6_DST: | |
683 | SW_FLOW_KEY_PUT(match, tun_key.u.ipv6.dst, | |
684 | nla_get_in6_addr(a), is_mask); | |
685 | ipv6 = true; | |
e6445719 PS |
686 | break; |
687 | case OVS_TUNNEL_KEY_ATTR_TOS: | |
7c383fb2 | 688 | SW_FLOW_KEY_PUT(match, tun_key.tos, |
e6445719 PS |
689 | nla_get_u8(a), is_mask); |
690 | break; | |
691 | case OVS_TUNNEL_KEY_ATTR_TTL: | |
7c383fb2 | 692 | SW_FLOW_KEY_PUT(match, tun_key.ttl, |
e6445719 PS |
693 | nla_get_u8(a), is_mask); |
694 | ttl = true; | |
695 | break; | |
696 | case OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT: | |
697 | tun_flags |= TUNNEL_DONT_FRAGMENT; | |
698 | break; | |
699 | case OVS_TUNNEL_KEY_ATTR_CSUM: | |
700 | tun_flags |= TUNNEL_CSUM; | |
701 | break; | |
8f0aad6f WZ |
702 | case OVS_TUNNEL_KEY_ATTR_TP_SRC: |
703 | SW_FLOW_KEY_PUT(match, tun_key.tp_src, | |
704 | nla_get_be16(a), is_mask); | |
705 | break; | |
706 | case OVS_TUNNEL_KEY_ATTR_TP_DST: | |
707 | SW_FLOW_KEY_PUT(match, tun_key.tp_dst, | |
708 | nla_get_be16(a), is_mask); | |
709 | break; | |
67fa0341 JG |
710 | case OVS_TUNNEL_KEY_ATTR_OAM: |
711 | tun_flags |= TUNNEL_OAM; | |
712 | break; | |
f5796684 | 713 | case OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS: |
1dd144cf TG |
714 | if (opts_type) { |
715 | OVS_NLERR(log, "Multiple metadata blocks provided"); | |
716 | return -EINVAL; | |
717 | } | |
718 | ||
05da5898 JR |
719 | err = genev_tun_opt_from_nlattr(a, match, is_mask, log); |
720 | if (err) | |
721 | return err; | |
f5796684 | 722 | |
1dd144cf TG |
723 | tun_flags |= TUNNEL_GENEVE_OPT; |
724 | opts_type = type; | |
725 | break; | |
726 | case OVS_TUNNEL_KEY_ATTR_VXLAN_OPTS: | |
727 | if (opts_type) { | |
728 | OVS_NLERR(log, "Multiple metadata blocks provided"); | |
729 | return -EINVAL; | |
730 | } | |
731 | ||
732 | err = vxlan_tun_opt_from_nlattr(a, match, is_mask, log); | |
733 | if (err) | |
734 | return err; | |
735 | ||
736 | tun_flags |= TUNNEL_VXLAN_OPT; | |
737 | opts_type = type; | |
f5796684 | 738 | break; |
8f3dbfd7 KM |
739 | case OVS_TUNNEL_KEY_ATTR_PAD: |
740 | break; | |
e6445719 | 741 | default: |
6b26ba3a | 742 | OVS_NLERR(log, "Unknown IP tunnel attribute %d", |
f5796684 | 743 | type); |
e6445719 PS |
744 | return -EINVAL; |
745 | } | |
746 | } | |
747 | ||
748 | SW_FLOW_KEY_PUT(match, tun_key.tun_flags, tun_flags, is_mask); | |
00a93bab JB |
749 | if (is_mask) |
750 | SW_FLOW_KEY_MEMSET_FIELD(match, tun_proto, 0xff, true); | |
751 | else | |
6b26ba3a JB |
752 | SW_FLOW_KEY_PUT(match, tun_proto, ipv6 ? AF_INET6 : AF_INET, |
753 | false); | |
e6445719 PS |
754 | |
755 | if (rem > 0) { | |
6b26ba3a | 756 | OVS_NLERR(log, "IP tunnel attribute has %d unknown bytes.", |
05da5898 | 757 | rem); |
e6445719 PS |
758 | return -EINVAL; |
759 | } | |
760 | ||
6b26ba3a JB |
761 | if (ipv4 && ipv6) { |
762 | OVS_NLERR(log, "Mixed IPv4 and IPv6 tunnel attributes"); | |
763 | return -EINVAL; | |
764 | } | |
765 | ||
e6445719 | 766 | if (!is_mask) { |
6b26ba3a JB |
767 | if (!ipv4 && !ipv6) { |
768 | OVS_NLERR(log, "IP tunnel dst address not specified"); | |
769 | return -EINVAL; | |
770 | } | |
771 | if (ipv4 && !match->key->tun_key.u.ipv4.dst) { | |
05da5898 | 772 | OVS_NLERR(log, "IPv4 tunnel dst address is zero"); |
e6445719 PS |
773 | return -EINVAL; |
774 | } | |
6b26ba3a JB |
775 | if (ipv6 && ipv6_addr_any(&match->key->tun_key.u.ipv6.dst)) { |
776 | OVS_NLERR(log, "IPv6 tunnel dst address is zero"); | |
777 | return -EINVAL; | |
778 | } | |
e6445719 PS |
779 | |
780 | if (!ttl) { | |
6b26ba3a | 781 | OVS_NLERR(log, "IP tunnel TTL not specified."); |
e6445719 PS |
782 | return -EINVAL; |
783 | } | |
784 | } | |
785 | ||
1dd144cf TG |
786 | return opts_type; |
787 | } | |
788 | ||
789 | static int vxlan_opt_to_nlattr(struct sk_buff *skb, | |
790 | const void *tun_opts, int swkey_tun_opts_len) | |
791 | { | |
614732ea | 792 | const struct vxlan_metadata *opts = tun_opts; |
1dd144cf TG |
793 | struct nlattr *nla; |
794 | ||
795 | nla = nla_nest_start(skb, OVS_TUNNEL_KEY_ATTR_VXLAN_OPTS); | |
796 | if (!nla) | |
797 | return -EMSGSIZE; | |
798 | ||
799 | if (nla_put_u32(skb, OVS_VXLAN_EXT_GBP, opts->gbp) < 0) | |
800 | return -EMSGSIZE; | |
801 | ||
802 | nla_nest_end(skb, nla); | |
e6445719 PS |
803 | return 0; |
804 | } | |
805 | ||
6b26ba3a JB |
806 | static int __ip_tun_to_nlattr(struct sk_buff *skb, |
807 | const struct ip_tunnel_key *output, | |
808 | const void *tun_opts, int swkey_tun_opts_len, | |
809 | unsigned short tun_proto) | |
e6445719 | 810 | { |
e6445719 | 811 | if (output->tun_flags & TUNNEL_KEY && |
b46f6ded ND |
812 | nla_put_be64(skb, OVS_TUNNEL_KEY_ATTR_ID, output->tun_id, |
813 | OVS_TUNNEL_KEY_ATTR_PAD)) | |
e6445719 | 814 | return -EMSGSIZE; |
6b26ba3a JB |
815 | switch (tun_proto) { |
816 | case AF_INET: | |
817 | if (output->u.ipv4.src && | |
818 | nla_put_in_addr(skb, OVS_TUNNEL_KEY_ATTR_IPV4_SRC, | |
819 | output->u.ipv4.src)) | |
820 | return -EMSGSIZE; | |
821 | if (output->u.ipv4.dst && | |
822 | nla_put_in_addr(skb, OVS_TUNNEL_KEY_ATTR_IPV4_DST, | |
823 | output->u.ipv4.dst)) | |
824 | return -EMSGSIZE; | |
825 | break; | |
826 | case AF_INET6: | |
827 | if (!ipv6_addr_any(&output->u.ipv6.src) && | |
828 | nla_put_in6_addr(skb, OVS_TUNNEL_KEY_ATTR_IPV6_SRC, | |
829 | &output->u.ipv6.src)) | |
830 | return -EMSGSIZE; | |
831 | if (!ipv6_addr_any(&output->u.ipv6.dst) && | |
832 | nla_put_in6_addr(skb, OVS_TUNNEL_KEY_ATTR_IPV6_DST, | |
833 | &output->u.ipv6.dst)) | |
834 | return -EMSGSIZE; | |
835 | break; | |
836 | } | |
7c383fb2 JB |
837 | if (output->tos && |
838 | nla_put_u8(skb, OVS_TUNNEL_KEY_ATTR_TOS, output->tos)) | |
e6445719 | 839 | return -EMSGSIZE; |
7c383fb2 | 840 | if (nla_put_u8(skb, OVS_TUNNEL_KEY_ATTR_TTL, output->ttl)) |
e6445719 PS |
841 | return -EMSGSIZE; |
842 | if ((output->tun_flags & TUNNEL_DONT_FRAGMENT) && | |
67fa0341 | 843 | nla_put_flag(skb, OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT)) |
e6445719 PS |
844 | return -EMSGSIZE; |
845 | if ((output->tun_flags & TUNNEL_CSUM) && | |
67fa0341 JG |
846 | nla_put_flag(skb, OVS_TUNNEL_KEY_ATTR_CSUM)) |
847 | return -EMSGSIZE; | |
8f0aad6f WZ |
848 | if (output->tp_src && |
849 | nla_put_be16(skb, OVS_TUNNEL_KEY_ATTR_TP_SRC, output->tp_src)) | |
850 | return -EMSGSIZE; | |
851 | if (output->tp_dst && | |
852 | nla_put_be16(skb, OVS_TUNNEL_KEY_ATTR_TP_DST, output->tp_dst)) | |
853 | return -EMSGSIZE; | |
67fa0341 JG |
854 | if ((output->tun_flags & TUNNEL_OAM) && |
855 | nla_put_flag(skb, OVS_TUNNEL_KEY_ATTR_OAM)) | |
e6445719 | 856 | return -EMSGSIZE; |
fc4099f1 | 857 | if (swkey_tun_opts_len) { |
1dd144cf TG |
858 | if (output->tun_flags & TUNNEL_GENEVE_OPT && |
859 | nla_put(skb, OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS, | |
860 | swkey_tun_opts_len, tun_opts)) | |
861 | return -EMSGSIZE; | |
862 | else if (output->tun_flags & TUNNEL_VXLAN_OPT && | |
863 | vxlan_opt_to_nlattr(skb, tun_opts, swkey_tun_opts_len)) | |
864 | return -EMSGSIZE; | |
865 | } | |
e6445719 | 866 | |
e6445719 PS |
867 | return 0; |
868 | } | |
869 | ||
6b26ba3a JB |
870 | static int ip_tun_to_nlattr(struct sk_buff *skb, |
871 | const struct ip_tunnel_key *output, | |
872 | const void *tun_opts, int swkey_tun_opts_len, | |
873 | unsigned short tun_proto) | |
f5796684 JG |
874 | { |
875 | struct nlattr *nla; | |
876 | int err; | |
877 | ||
878 | nla = nla_nest_start(skb, OVS_KEY_ATTR_TUNNEL); | |
879 | if (!nla) | |
880 | return -EMSGSIZE; | |
881 | ||
6b26ba3a JB |
882 | err = __ip_tun_to_nlattr(skb, output, tun_opts, swkey_tun_opts_len, |
883 | tun_proto); | |
f5796684 JG |
884 | if (err) |
885 | return err; | |
886 | ||
887 | nla_nest_end(skb, nla); | |
888 | return 0; | |
889 | } | |
890 | ||
fc4099f1 PS |
891 | int ovs_nla_put_tunnel_info(struct sk_buff *skb, |
892 | struct ip_tunnel_info *tun_info) | |
8f0aad6f | 893 | { |
ba3e2084 DM |
894 | return __ip_tun_to_nlattr(skb, &tun_info->key, |
895 | ip_tunnel_info_opts(tun_info), | |
896 | tun_info->options_len, | |
897 | ip_tunnel_info_af(tun_info)); | |
8f0aad6f WZ |
898 | } |
899 | ||
018c1dda EG |
900 | static int encode_vlan_from_nlattrs(struct sw_flow_match *match, |
901 | const struct nlattr *a[], | |
902 | bool is_mask, bool inner) | |
903 | { | |
904 | __be16 tci = 0; | |
905 | __be16 tpid = 0; | |
906 | ||
907 | if (a[OVS_KEY_ATTR_VLAN]) | |
908 | tci = nla_get_be16(a[OVS_KEY_ATTR_VLAN]); | |
909 | ||
910 | if (a[OVS_KEY_ATTR_ETHERTYPE]) | |
911 | tpid = nla_get_be16(a[OVS_KEY_ATTR_ETHERTYPE]); | |
912 | ||
913 | if (likely(!inner)) { | |
914 | SW_FLOW_KEY_PUT(match, eth.vlan.tpid, tpid, is_mask); | |
915 | SW_FLOW_KEY_PUT(match, eth.vlan.tci, tci, is_mask); | |
916 | } else { | |
917 | SW_FLOW_KEY_PUT(match, eth.cvlan.tpid, tpid, is_mask); | |
918 | SW_FLOW_KEY_PUT(match, eth.cvlan.tci, tci, is_mask); | |
919 | } | |
920 | return 0; | |
921 | } | |
922 | ||
923 | static int validate_vlan_from_nlattrs(const struct sw_flow_match *match, | |
924 | u64 key_attrs, bool inner, | |
925 | const struct nlattr **a, bool log) | |
926 | { | |
927 | __be16 tci = 0; | |
928 | ||
929 | if (!((key_attrs & (1 << OVS_KEY_ATTR_ETHERNET)) && | |
930 | (key_attrs & (1 << OVS_KEY_ATTR_ETHERTYPE)) && | |
931 | eth_type_vlan(nla_get_be16(a[OVS_KEY_ATTR_ETHERTYPE])))) { | |
932 | /* Not a VLAN. */ | |
933 | return 0; | |
934 | } | |
935 | ||
936 | if (!((key_attrs & (1 << OVS_KEY_ATTR_VLAN)) && | |
937 | (key_attrs & (1 << OVS_KEY_ATTR_ENCAP)))) { | |
938 | OVS_NLERR(log, "Invalid %s frame", (inner) ? "C-VLAN" : "VLAN"); | |
939 | return -EINVAL; | |
940 | } | |
941 | ||
942 | if (a[OVS_KEY_ATTR_VLAN]) | |
943 | tci = nla_get_be16(a[OVS_KEY_ATTR_VLAN]); | |
944 | ||
945 | if (!(tci & htons(VLAN_TAG_PRESENT))) { | |
946 | if (tci) { | |
947 | OVS_NLERR(log, "%s TCI does not have VLAN_TAG_PRESENT bit set.", | |
948 | (inner) ? "C-VLAN" : "VLAN"); | |
949 | return -EINVAL; | |
950 | } else if (nla_len(a[OVS_KEY_ATTR_ENCAP])) { | |
951 | /* Corner case for truncated VLAN header. */ | |
952 | OVS_NLERR(log, "Truncated %s header has non-zero encap attribute.", | |
953 | (inner) ? "C-VLAN" : "VLAN"); | |
954 | return -EINVAL; | |
955 | } | |
956 | } | |
957 | ||
958 | return 1; | |
959 | } | |
960 | ||
961 | static int validate_vlan_mask_from_nlattrs(const struct sw_flow_match *match, | |
962 | u64 key_attrs, bool inner, | |
963 | const struct nlattr **a, bool log) | |
964 | { | |
965 | __be16 tci = 0; | |
966 | __be16 tpid = 0; | |
967 | bool encap_valid = !!(match->key->eth.vlan.tci & | |
968 | htons(VLAN_TAG_PRESENT)); | |
969 | bool i_encap_valid = !!(match->key->eth.cvlan.tci & | |
970 | htons(VLAN_TAG_PRESENT)); | |
971 | ||
972 | if (!(key_attrs & (1 << OVS_KEY_ATTR_ENCAP))) { | |
973 | /* Not a VLAN. */ | |
974 | return 0; | |
975 | } | |
976 | ||
977 | if ((!inner && !encap_valid) || (inner && !i_encap_valid)) { | |
978 | OVS_NLERR(log, "Encap mask attribute is set for non-%s frame.", | |
979 | (inner) ? "C-VLAN" : "VLAN"); | |
980 | return -EINVAL; | |
981 | } | |
982 | ||
983 | if (a[OVS_KEY_ATTR_VLAN]) | |
984 | tci = nla_get_be16(a[OVS_KEY_ATTR_VLAN]); | |
985 | ||
986 | if (a[OVS_KEY_ATTR_ETHERTYPE]) | |
987 | tpid = nla_get_be16(a[OVS_KEY_ATTR_ETHERTYPE]); | |
988 | ||
989 | if (tpid != htons(0xffff)) { | |
990 | OVS_NLERR(log, "Must have an exact match on %s TPID (mask=%x).", | |
991 | (inner) ? "C-VLAN" : "VLAN", ntohs(tpid)); | |
992 | return -EINVAL; | |
993 | } | |
994 | if (!(tci & htons(VLAN_TAG_PRESENT))) { | |
995 | OVS_NLERR(log, "%s TCI mask does not have exact match for VLAN_TAG_PRESENT bit.", | |
996 | (inner) ? "C-VLAN" : "VLAN"); | |
997 | return -EINVAL; | |
998 | } | |
999 | ||
1000 | return 1; | |
1001 | } | |
1002 | ||
1003 | static int __parse_vlan_from_nlattrs(struct sw_flow_match *match, | |
1004 | u64 *key_attrs, bool inner, | |
1005 | const struct nlattr **a, bool is_mask, | |
1006 | bool log) | |
1007 | { | |
1008 | int err; | |
1009 | const struct nlattr *encap; | |
1010 | ||
1011 | if (!is_mask) | |
1012 | err = validate_vlan_from_nlattrs(match, *key_attrs, inner, | |
1013 | a, log); | |
1014 | else | |
1015 | err = validate_vlan_mask_from_nlattrs(match, *key_attrs, inner, | |
1016 | a, log); | |
1017 | if (err <= 0) | |
1018 | return err; | |
1019 | ||
1020 | err = encode_vlan_from_nlattrs(match, a, is_mask, inner); | |
1021 | if (err) | |
1022 | return err; | |
1023 | ||
1024 | *key_attrs &= ~(1 << OVS_KEY_ATTR_ENCAP); | |
1025 | *key_attrs &= ~(1 << OVS_KEY_ATTR_VLAN); | |
1026 | *key_attrs &= ~(1 << OVS_KEY_ATTR_ETHERTYPE); | |
1027 | ||
1028 | encap = a[OVS_KEY_ATTR_ENCAP]; | |
1029 | ||
1030 | if (!is_mask) | |
1031 | err = parse_flow_nlattrs(encap, a, key_attrs, log); | |
1032 | else | |
1033 | err = parse_flow_mask_nlattrs(encap, a, key_attrs, log); | |
1034 | ||
1035 | return err; | |
1036 | } | |
1037 | ||
1038 | static int parse_vlan_from_nlattrs(struct sw_flow_match *match, | |
1039 | u64 *key_attrs, const struct nlattr **a, | |
1040 | bool is_mask, bool log) | |
1041 | { | |
1042 | int err; | |
1043 | bool encap_valid = false; | |
1044 | ||
1045 | err = __parse_vlan_from_nlattrs(match, key_attrs, false, a, | |
1046 | is_mask, log); | |
1047 | if (err) | |
1048 | return err; | |
1049 | ||
1050 | encap_valid = !!(match->key->eth.vlan.tci & htons(VLAN_TAG_PRESENT)); | |
1051 | if (encap_valid) { | |
1052 | err = __parse_vlan_from_nlattrs(match, key_attrs, true, a, | |
1053 | is_mask, log); | |
1054 | if (err) | |
1055 | return err; | |
1056 | } | |
1057 | ||
1058 | return 0; | |
1059 | } | |
1060 | ||
0a6410fb JB |
1061 | static int parse_eth_type_from_nlattrs(struct sw_flow_match *match, |
1062 | u64 *attrs, const struct nlattr **a, | |
1063 | bool is_mask, bool log) | |
1064 | { | |
1065 | __be16 eth_type; | |
1066 | ||
1067 | eth_type = nla_get_be16(a[OVS_KEY_ATTR_ETHERTYPE]); | |
1068 | if (is_mask) { | |
1069 | /* Always exact match EtherType. */ | |
1070 | eth_type = htons(0xffff); | |
1071 | } else if (!eth_proto_is_802_3(eth_type)) { | |
1072 | OVS_NLERR(log, "EtherType %x is less than min %x", | |
1073 | ntohs(eth_type), ETH_P_802_3_MIN); | |
1074 | return -EINVAL; | |
1075 | } | |
1076 | ||
1077 | SW_FLOW_KEY_PUT(match, eth.type, eth_type, is_mask); | |
1078 | *attrs &= ~(1 << OVS_KEY_ATTR_ETHERTYPE); | |
1079 | return 0; | |
1080 | } | |
1081 | ||
c2ac6673 JS |
1082 | static int metadata_from_nlattrs(struct net *net, struct sw_flow_match *match, |
1083 | u64 *attrs, const struct nlattr **a, | |
1084 | bool is_mask, bool log) | |
e6445719 | 1085 | { |
0a6410fb JB |
1086 | u8 mac_proto = MAC_PROTO_ETHERNET; |
1087 | ||
971427f3 AZ |
1088 | if (*attrs & (1 << OVS_KEY_ATTR_DP_HASH)) { |
1089 | u32 hash_val = nla_get_u32(a[OVS_KEY_ATTR_DP_HASH]); | |
1090 | ||
1091 | SW_FLOW_KEY_PUT(match, ovs_flow_hash, hash_val, is_mask); | |
1092 | *attrs &= ~(1 << OVS_KEY_ATTR_DP_HASH); | |
1093 | } | |
1094 | ||
1095 | if (*attrs & (1 << OVS_KEY_ATTR_RECIRC_ID)) { | |
1096 | u32 recirc_id = nla_get_u32(a[OVS_KEY_ATTR_RECIRC_ID]); | |
1097 | ||
1098 | SW_FLOW_KEY_PUT(match, recirc_id, recirc_id, is_mask); | |
1099 | *attrs &= ~(1 << OVS_KEY_ATTR_RECIRC_ID); | |
1100 | } | |
1101 | ||
e6445719 PS |
1102 | if (*attrs & (1 << OVS_KEY_ATTR_PRIORITY)) { |
1103 | SW_FLOW_KEY_PUT(match, phy.priority, | |
1104 | nla_get_u32(a[OVS_KEY_ATTR_PRIORITY]), is_mask); | |
1105 | *attrs &= ~(1 << OVS_KEY_ATTR_PRIORITY); | |
1106 | } | |
1107 | ||
1108 | if (*attrs & (1 << OVS_KEY_ATTR_IN_PORT)) { | |
1109 | u32 in_port = nla_get_u32(a[OVS_KEY_ATTR_IN_PORT]); | |
1110 | ||
426cda5c | 1111 | if (is_mask) { |
e6445719 | 1112 | in_port = 0xffffffff; /* Always exact match in_port. */ |
426cda5c | 1113 | } else if (in_port >= DP_MAX_PORTS) { |
05da5898 | 1114 | OVS_NLERR(log, "Port %d exceeds max allowable %d", |
426cda5c | 1115 | in_port, DP_MAX_PORTS); |
e6445719 | 1116 | return -EINVAL; |
426cda5c | 1117 | } |
e6445719 PS |
1118 | |
1119 | SW_FLOW_KEY_PUT(match, phy.in_port, in_port, is_mask); | |
1120 | *attrs &= ~(1 << OVS_KEY_ATTR_IN_PORT); | |
1121 | } else if (!is_mask) { | |
1122 | SW_FLOW_KEY_PUT(match, phy.in_port, DP_MAX_PORTS, is_mask); | |
1123 | } | |
1124 | ||
1125 | if (*attrs & (1 << OVS_KEY_ATTR_SKB_MARK)) { | |
1126 | uint32_t mark = nla_get_u32(a[OVS_KEY_ATTR_SKB_MARK]); | |
1127 | ||
1128 | SW_FLOW_KEY_PUT(match, phy.skb_mark, mark, is_mask); | |
1129 | *attrs &= ~(1 << OVS_KEY_ATTR_SKB_MARK); | |
1130 | } | |
1131 | if (*attrs & (1 << OVS_KEY_ATTR_TUNNEL)) { | |
6b26ba3a JB |
1132 | if (ip_tun_from_nlattr(a[OVS_KEY_ATTR_TUNNEL], match, |
1133 | is_mask, log) < 0) | |
e6445719 PS |
1134 | return -EINVAL; |
1135 | *attrs &= ~(1 << OVS_KEY_ATTR_TUNNEL); | |
1136 | } | |
7f8a436e JS |
1137 | |
1138 | if (*attrs & (1 << OVS_KEY_ATTR_CT_STATE) && | |
c2ac6673 | 1139 | ovs_ct_verify(net, OVS_KEY_ATTR_CT_STATE)) { |
fbccce59 | 1140 | u32 ct_state = nla_get_u32(a[OVS_KEY_ATTR_CT_STATE]); |
7f8a436e | 1141 | |
9e384715 | 1142 | if (ct_state & ~CT_SUPPORTED_MASK) { |
fbccce59 | 1143 | OVS_NLERR(log, "ct_state flags %08x unsupported", |
6f225952 JS |
1144 | ct_state); |
1145 | return -EINVAL; | |
1146 | } | |
7f8a436e | 1147 | |
316d4d78 | 1148 | SW_FLOW_KEY_PUT(match, ct_state, ct_state, is_mask); |
7f8a436e JS |
1149 | *attrs &= ~(1ULL << OVS_KEY_ATTR_CT_STATE); |
1150 | } | |
1151 | if (*attrs & (1 << OVS_KEY_ATTR_CT_ZONE) && | |
c2ac6673 | 1152 | ovs_ct_verify(net, OVS_KEY_ATTR_CT_ZONE)) { |
7f8a436e JS |
1153 | u16 ct_zone = nla_get_u16(a[OVS_KEY_ATTR_CT_ZONE]); |
1154 | ||
316d4d78 | 1155 | SW_FLOW_KEY_PUT(match, ct_zone, ct_zone, is_mask); |
7f8a436e JS |
1156 | *attrs &= ~(1ULL << OVS_KEY_ATTR_CT_ZONE); |
1157 | } | |
182e3042 | 1158 | if (*attrs & (1 << OVS_KEY_ATTR_CT_MARK) && |
c2ac6673 | 1159 | ovs_ct_verify(net, OVS_KEY_ATTR_CT_MARK)) { |
182e3042 JS |
1160 | u32 mark = nla_get_u32(a[OVS_KEY_ATTR_CT_MARK]); |
1161 | ||
1162 | SW_FLOW_KEY_PUT(match, ct.mark, mark, is_mask); | |
1163 | *attrs &= ~(1ULL << OVS_KEY_ATTR_CT_MARK); | |
1164 | } | |
33db4125 JS |
1165 | if (*attrs & (1 << OVS_KEY_ATTR_CT_LABELS) && |
1166 | ovs_ct_verify(net, OVS_KEY_ATTR_CT_LABELS)) { | |
1167 | const struct ovs_key_ct_labels *cl; | |
c2ac6673 | 1168 | |
33db4125 JS |
1169 | cl = nla_data(a[OVS_KEY_ATTR_CT_LABELS]); |
1170 | SW_FLOW_KEY_MEMCPY(match, ct.labels, cl->ct_labels, | |
c2ac6673 | 1171 | sizeof(*cl), is_mask); |
33db4125 | 1172 | *attrs &= ~(1ULL << OVS_KEY_ATTR_CT_LABELS); |
c2ac6673 | 1173 | } |
9dd7f890 JR |
1174 | if (*attrs & (1ULL << OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV4)) { |
1175 | const struct ovs_key_ct_tuple_ipv4 *ct; | |
1176 | ||
1177 | ct = nla_data(a[OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV4]); | |
1178 | ||
1179 | SW_FLOW_KEY_PUT(match, ipv4.ct_orig.src, ct->ipv4_src, is_mask); | |
1180 | SW_FLOW_KEY_PUT(match, ipv4.ct_orig.dst, ct->ipv4_dst, is_mask); | |
1181 | SW_FLOW_KEY_PUT(match, ct.orig_tp.src, ct->src_port, is_mask); | |
1182 | SW_FLOW_KEY_PUT(match, ct.orig_tp.dst, ct->dst_port, is_mask); | |
316d4d78 | 1183 | SW_FLOW_KEY_PUT(match, ct_orig_proto, ct->ipv4_proto, is_mask); |
9dd7f890 JR |
1184 | *attrs &= ~(1ULL << OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV4); |
1185 | } | |
1186 | if (*attrs & (1ULL << OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV6)) { | |
1187 | const struct ovs_key_ct_tuple_ipv6 *ct; | |
1188 | ||
1189 | ct = nla_data(a[OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV6]); | |
1190 | ||
1191 | SW_FLOW_KEY_MEMCPY(match, ipv6.ct_orig.src, &ct->ipv6_src, | |
1192 | sizeof(match->key->ipv6.ct_orig.src), | |
1193 | is_mask); | |
1194 | SW_FLOW_KEY_MEMCPY(match, ipv6.ct_orig.dst, &ct->ipv6_dst, | |
1195 | sizeof(match->key->ipv6.ct_orig.dst), | |
1196 | is_mask); | |
1197 | SW_FLOW_KEY_PUT(match, ct.orig_tp.src, ct->src_port, is_mask); | |
1198 | SW_FLOW_KEY_PUT(match, ct.orig_tp.dst, ct->dst_port, is_mask); | |
316d4d78 | 1199 | SW_FLOW_KEY_PUT(match, ct_orig_proto, ct->ipv6_proto, is_mask); |
9dd7f890 JR |
1200 | *attrs &= ~(1ULL << OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV6); |
1201 | } | |
329f45bc | 1202 | |
0a6410fb JB |
1203 | /* For layer 3 packets the Ethernet type is provided |
1204 | * and treated as metadata but no MAC addresses are provided. | |
1205 | */ | |
1206 | if (!(*attrs & (1ULL << OVS_KEY_ATTR_ETHERNET)) && | |
1207 | (*attrs & (1ULL << OVS_KEY_ATTR_ETHERTYPE))) | |
1208 | mac_proto = MAC_PROTO_NONE; | |
1209 | ||
329f45bc | 1210 | /* Always exact match mac_proto */ |
0a6410fb JB |
1211 | SW_FLOW_KEY_PUT(match, mac_proto, is_mask ? 0xff : mac_proto, is_mask); |
1212 | ||
1213 | if (mac_proto == MAC_PROTO_NONE) | |
1214 | return parse_eth_type_from_nlattrs(match, attrs, a, is_mask, | |
1215 | log); | |
329f45bc | 1216 | |
e6445719 PS |
1217 | return 0; |
1218 | } | |
1219 | ||
b2d0f5d5 YY |
1220 | int nsh_hdr_from_nlattr(const struct nlattr *attr, |
1221 | struct nshhdr *nh, size_t size) | |
1222 | { | |
1223 | struct nlattr *a; | |
1224 | int rem; | |
1225 | u8 flags = 0; | |
1226 | u8 ttl = 0; | |
1227 | int mdlen = 0; | |
1228 | ||
1229 | /* validate_nsh has check this, so we needn't do duplicate check here | |
1230 | */ | |
1231 | if (size < NSH_BASE_HDR_LEN) | |
1232 | return -ENOBUFS; | |
1233 | ||
1234 | nla_for_each_nested(a, attr, rem) { | |
1235 | int type = nla_type(a); | |
1236 | ||
1237 | switch (type) { | |
1238 | case OVS_NSH_KEY_ATTR_BASE: { | |
1239 | const struct ovs_nsh_key_base *base = nla_data(a); | |
1240 | ||
1241 | flags = base->flags; | |
1242 | ttl = base->ttl; | |
1243 | nh->np = base->np; | |
1244 | nh->mdtype = base->mdtype; | |
1245 | nh->path_hdr = base->path_hdr; | |
1246 | break; | |
1247 | } | |
1248 | case OVS_NSH_KEY_ATTR_MD1: | |
1249 | mdlen = nla_len(a); | |
1250 | if (mdlen > size - NSH_BASE_HDR_LEN) | |
1251 | return -ENOBUFS; | |
1252 | memcpy(&nh->md1, nla_data(a), mdlen); | |
1253 | break; | |
1254 | ||
1255 | case OVS_NSH_KEY_ATTR_MD2: | |
1256 | mdlen = nla_len(a); | |
1257 | if (mdlen > size - NSH_BASE_HDR_LEN) | |
1258 | return -ENOBUFS; | |
1259 | memcpy(&nh->md2, nla_data(a), mdlen); | |
1260 | break; | |
1261 | ||
1262 | default: | |
1263 | return -EINVAL; | |
1264 | } | |
1265 | } | |
1266 | ||
1267 | /* nsh header length = NSH_BASE_HDR_LEN + mdlen */ | |
1268 | nh->ver_flags_ttl_len = 0; | |
1269 | nsh_set_flags_ttl_len(nh, flags, ttl, NSH_BASE_HDR_LEN + mdlen); | |
1270 | ||
1271 | return 0; | |
1272 | } | |
1273 | ||
1274 | int nsh_key_from_nlattr(const struct nlattr *attr, | |
1275 | struct ovs_key_nsh *nsh, struct ovs_key_nsh *nsh_mask) | |
1276 | { | |
1277 | struct nlattr *a; | |
1278 | int rem; | |
1279 | ||
1280 | /* validate_nsh has check this, so we needn't do duplicate check here | |
1281 | */ | |
1282 | nla_for_each_nested(a, attr, rem) { | |
1283 | int type = nla_type(a); | |
1284 | ||
1285 | switch (type) { | |
1286 | case OVS_NSH_KEY_ATTR_BASE: { | |
1287 | const struct ovs_nsh_key_base *base = nla_data(a); | |
1288 | const struct ovs_nsh_key_base *base_mask = base + 1; | |
1289 | ||
1290 | nsh->base = *base; | |
1291 | nsh_mask->base = *base_mask; | |
1292 | break; | |
1293 | } | |
1294 | case OVS_NSH_KEY_ATTR_MD1: { | |
1295 | const struct ovs_nsh_key_md1 *md1 = nla_data(a); | |
1296 | const struct ovs_nsh_key_md1 *md1_mask = md1 + 1; | |
1297 | ||
1298 | memcpy(nsh->context, md1->context, sizeof(*md1)); | |
1299 | memcpy(nsh_mask->context, md1_mask->context, | |
1300 | sizeof(*md1_mask)); | |
1301 | break; | |
1302 | } | |
1303 | case OVS_NSH_KEY_ATTR_MD2: | |
1304 | /* Not supported yet */ | |
1305 | return -ENOTSUPP; | |
1306 | default: | |
1307 | return -EINVAL; | |
1308 | } | |
1309 | } | |
1310 | ||
1311 | return 0; | |
1312 | } | |
1313 | ||
1314 | static int nsh_key_put_from_nlattr(const struct nlattr *attr, | |
1315 | struct sw_flow_match *match, bool is_mask, | |
1316 | bool is_push_nsh, bool log) | |
1317 | { | |
1318 | struct nlattr *a; | |
1319 | int rem; | |
1320 | bool has_base = false; | |
1321 | bool has_md1 = false; | |
1322 | bool has_md2 = false; | |
1323 | u8 mdtype = 0; | |
1324 | int mdlen = 0; | |
1325 | ||
1326 | if (WARN_ON(is_push_nsh && is_mask)) | |
1327 | return -EINVAL; | |
1328 | ||
1329 | nla_for_each_nested(a, attr, rem) { | |
1330 | int type = nla_type(a); | |
1331 | int i; | |
1332 | ||
1333 | if (type > OVS_NSH_KEY_ATTR_MAX) { | |
1334 | OVS_NLERR(log, "nsh attr %d is out of range max %d", | |
1335 | type, OVS_NSH_KEY_ATTR_MAX); | |
1336 | return -EINVAL; | |
1337 | } | |
1338 | ||
1339 | if (!check_attr_len(nla_len(a), | |
1340 | ovs_nsh_key_attr_lens[type].len)) { | |
1341 | OVS_NLERR( | |
1342 | log, | |
1343 | "nsh attr %d has unexpected len %d expected %d", | |
1344 | type, | |
1345 | nla_len(a), | |
1346 | ovs_nsh_key_attr_lens[type].len | |
1347 | ); | |
1348 | return -EINVAL; | |
1349 | } | |
1350 | ||
1351 | switch (type) { | |
1352 | case OVS_NSH_KEY_ATTR_BASE: { | |
1353 | const struct ovs_nsh_key_base *base = nla_data(a); | |
1354 | ||
1355 | has_base = true; | |
1356 | mdtype = base->mdtype; | |
1357 | SW_FLOW_KEY_PUT(match, nsh.base.flags, | |
1358 | base->flags, is_mask); | |
1359 | SW_FLOW_KEY_PUT(match, nsh.base.ttl, | |
1360 | base->ttl, is_mask); | |
1361 | SW_FLOW_KEY_PUT(match, nsh.base.mdtype, | |
1362 | base->mdtype, is_mask); | |
1363 | SW_FLOW_KEY_PUT(match, nsh.base.np, | |
1364 | base->np, is_mask); | |
1365 | SW_FLOW_KEY_PUT(match, nsh.base.path_hdr, | |
1366 | base->path_hdr, is_mask); | |
1367 | break; | |
1368 | } | |
1369 | case OVS_NSH_KEY_ATTR_MD1: { | |
1370 | const struct ovs_nsh_key_md1 *md1 = nla_data(a); | |
1371 | ||
1372 | has_md1 = true; | |
1373 | for (i = 0; i < NSH_MD1_CONTEXT_SIZE; i++) | |
1374 | SW_FLOW_KEY_PUT(match, nsh.context[i], | |
1375 | md1->context[i], is_mask); | |
1376 | break; | |
1377 | } | |
1378 | case OVS_NSH_KEY_ATTR_MD2: | |
1379 | if (!is_push_nsh) /* Not supported MD type 2 yet */ | |
1380 | return -ENOTSUPP; | |
1381 | ||
1382 | has_md2 = true; | |
1383 | mdlen = nla_len(a); | |
1384 | if (mdlen > NSH_CTX_HDRS_MAX_LEN || mdlen <= 0) { | |
1385 | OVS_NLERR( | |
1386 | log, | |
1387 | "Invalid MD length %d for MD type %d", | |
1388 | mdlen, | |
1389 | mdtype | |
1390 | ); | |
1391 | return -EINVAL; | |
1392 | } | |
1393 | break; | |
1394 | default: | |
1395 | OVS_NLERR(log, "Unknown nsh attribute %d", | |
1396 | type); | |
1397 | return -EINVAL; | |
1398 | } | |
1399 | } | |
1400 | ||
1401 | if (rem > 0) { | |
1402 | OVS_NLERR(log, "nsh attribute has %d unknown bytes.", rem); | |
1403 | return -EINVAL; | |
1404 | } | |
1405 | ||
1406 | if (has_md1 && has_md2) { | |
1407 | OVS_NLERR( | |
1408 | 1, | |
1409 | "invalid nsh attribute: md1 and md2 are exclusive." | |
1410 | ); | |
1411 | return -EINVAL; | |
1412 | } | |
1413 | ||
1414 | if (!is_mask) { | |
1415 | if ((has_md1 && mdtype != NSH_M_TYPE1) || | |
1416 | (has_md2 && mdtype != NSH_M_TYPE2)) { | |
1417 | OVS_NLERR(1, "nsh attribute has unmatched MD type %d.", | |
1418 | mdtype); | |
1419 | return -EINVAL; | |
1420 | } | |
1421 | ||
1422 | if (is_push_nsh && | |
1423 | (!has_base || (!has_md1 && !has_md2))) { | |
1424 | OVS_NLERR( | |
1425 | 1, | |
1426 | "push_nsh: missing base or metadata attributes" | |
1427 | ); | |
1428 | return -EINVAL; | |
1429 | } | |
1430 | } | |
1431 | ||
1432 | return 0; | |
1433 | } | |
1434 | ||
c2ac6673 JS |
1435 | static int ovs_key_from_nlattrs(struct net *net, struct sw_flow_match *match, |
1436 | u64 attrs, const struct nlattr **a, | |
1437 | bool is_mask, bool log) | |
e6445719 PS |
1438 | { |
1439 | int err; | |
e6445719 | 1440 | |
c2ac6673 | 1441 | err = metadata_from_nlattrs(net, match, &attrs, a, is_mask, log); |
e6445719 PS |
1442 | if (err) |
1443 | return err; | |
1444 | ||
1445 | if (attrs & (1 << OVS_KEY_ATTR_ETHERNET)) { | |
1446 | const struct ovs_key_ethernet *eth_key; | |
1447 | ||
1448 | eth_key = nla_data(a[OVS_KEY_ATTR_ETHERNET]); | |
1449 | SW_FLOW_KEY_MEMCPY(match, eth.src, | |
1450 | eth_key->eth_src, ETH_ALEN, is_mask); | |
1451 | SW_FLOW_KEY_MEMCPY(match, eth.dst, | |
1452 | eth_key->eth_dst, ETH_ALEN, is_mask); | |
1453 | attrs &= ~(1 << OVS_KEY_ATTR_ETHERNET); | |
e6445719 | 1454 | |
0a6410fb JB |
1455 | if (attrs & (1 << OVS_KEY_ATTR_VLAN)) { |
1456 | /* VLAN attribute is always parsed before getting here since it | |
1457 | * may occur multiple times. | |
1458 | */ | |
1459 | OVS_NLERR(log, "VLAN attribute unexpected."); | |
e6445719 PS |
1460 | return -EINVAL; |
1461 | } | |
1462 | ||
0a6410fb JB |
1463 | if (attrs & (1 << OVS_KEY_ATTR_ETHERTYPE)) { |
1464 | err = parse_eth_type_from_nlattrs(match, &attrs, a, is_mask, | |
1465 | log); | |
1466 | if (err) | |
1467 | return err; | |
1468 | } else if (!is_mask) { | |
1469 | SW_FLOW_KEY_PUT(match, eth.type, htons(ETH_P_802_2), is_mask); | |
1470 | } | |
1471 | } else if (!match->key->eth.type) { | |
1472 | OVS_NLERR(log, "Either Ethernet header or EtherType is required."); | |
1473 | return -EINVAL; | |
e6445719 PS |
1474 | } |
1475 | ||
1476 | if (attrs & (1 << OVS_KEY_ATTR_IPV4)) { | |
1477 | const struct ovs_key_ipv4 *ipv4_key; | |
1478 | ||
1479 | ipv4_key = nla_data(a[OVS_KEY_ATTR_IPV4]); | |
1480 | if (!is_mask && ipv4_key->ipv4_frag > OVS_FRAG_TYPE_MAX) { | |
05da5898 JR |
1481 | OVS_NLERR(log, "IPv4 frag type %d is out of range max %d", |
1482 | ipv4_key->ipv4_frag, OVS_FRAG_TYPE_MAX); | |
e6445719 PS |
1483 | return -EINVAL; |
1484 | } | |
1485 | SW_FLOW_KEY_PUT(match, ip.proto, | |
1486 | ipv4_key->ipv4_proto, is_mask); | |
1487 | SW_FLOW_KEY_PUT(match, ip.tos, | |
1488 | ipv4_key->ipv4_tos, is_mask); | |
1489 | SW_FLOW_KEY_PUT(match, ip.ttl, | |
1490 | ipv4_key->ipv4_ttl, is_mask); | |
1491 | SW_FLOW_KEY_PUT(match, ip.frag, | |
1492 | ipv4_key->ipv4_frag, is_mask); | |
1493 | SW_FLOW_KEY_PUT(match, ipv4.addr.src, | |
1494 | ipv4_key->ipv4_src, is_mask); | |
1495 | SW_FLOW_KEY_PUT(match, ipv4.addr.dst, | |
1496 | ipv4_key->ipv4_dst, is_mask); | |
1497 | attrs &= ~(1 << OVS_KEY_ATTR_IPV4); | |
1498 | } | |
1499 | ||
1500 | if (attrs & (1 << OVS_KEY_ATTR_IPV6)) { | |
1501 | const struct ovs_key_ipv6 *ipv6_key; | |
1502 | ||
1503 | ipv6_key = nla_data(a[OVS_KEY_ATTR_IPV6]); | |
1504 | if (!is_mask && ipv6_key->ipv6_frag > OVS_FRAG_TYPE_MAX) { | |
05da5898 JR |
1505 | OVS_NLERR(log, "IPv6 frag type %d is out of range max %d", |
1506 | ipv6_key->ipv6_frag, OVS_FRAG_TYPE_MAX); | |
e6445719 PS |
1507 | return -EINVAL; |
1508 | } | |
fecaef85 | 1509 | |
d3052bb5 | 1510 | if (!is_mask && ipv6_key->ipv6_label & htonl(0xFFF00000)) { |
0ed80da5 | 1511 | OVS_NLERR(log, "IPv6 flow label %x is out of range (max=%x)", |
fecaef85 JR |
1512 | ntohl(ipv6_key->ipv6_label), (1 << 20) - 1); |
1513 | return -EINVAL; | |
1514 | } | |
1515 | ||
e6445719 PS |
1516 | SW_FLOW_KEY_PUT(match, ipv6.label, |
1517 | ipv6_key->ipv6_label, is_mask); | |
1518 | SW_FLOW_KEY_PUT(match, ip.proto, | |
1519 | ipv6_key->ipv6_proto, is_mask); | |
1520 | SW_FLOW_KEY_PUT(match, ip.tos, | |
1521 | ipv6_key->ipv6_tclass, is_mask); | |
1522 | SW_FLOW_KEY_PUT(match, ip.ttl, | |
1523 | ipv6_key->ipv6_hlimit, is_mask); | |
1524 | SW_FLOW_KEY_PUT(match, ip.frag, | |
1525 | ipv6_key->ipv6_frag, is_mask); | |
1526 | SW_FLOW_KEY_MEMCPY(match, ipv6.addr.src, | |
1527 | ipv6_key->ipv6_src, | |
1528 | sizeof(match->key->ipv6.addr.src), | |
1529 | is_mask); | |
1530 | SW_FLOW_KEY_MEMCPY(match, ipv6.addr.dst, | |
1531 | ipv6_key->ipv6_dst, | |
1532 | sizeof(match->key->ipv6.addr.dst), | |
1533 | is_mask); | |
1534 | ||
1535 | attrs &= ~(1 << OVS_KEY_ATTR_IPV6); | |
1536 | } | |
1537 | ||
1538 | if (attrs & (1 << OVS_KEY_ATTR_ARP)) { | |
1539 | const struct ovs_key_arp *arp_key; | |
1540 | ||
1541 | arp_key = nla_data(a[OVS_KEY_ATTR_ARP]); | |
1542 | if (!is_mask && (arp_key->arp_op & htons(0xff00))) { | |
05da5898 | 1543 | OVS_NLERR(log, "Unknown ARP opcode (opcode=%d).", |
e6445719 PS |
1544 | arp_key->arp_op); |
1545 | return -EINVAL; | |
1546 | } | |
1547 | ||
1548 | SW_FLOW_KEY_PUT(match, ipv4.addr.src, | |
1549 | arp_key->arp_sip, is_mask); | |
1550 | SW_FLOW_KEY_PUT(match, ipv4.addr.dst, | |
1551 | arp_key->arp_tip, is_mask); | |
1552 | SW_FLOW_KEY_PUT(match, ip.proto, | |
1553 | ntohs(arp_key->arp_op), is_mask); | |
1554 | SW_FLOW_KEY_MEMCPY(match, ipv4.arp.sha, | |
1555 | arp_key->arp_sha, ETH_ALEN, is_mask); | |
1556 | SW_FLOW_KEY_MEMCPY(match, ipv4.arp.tha, | |
1557 | arp_key->arp_tha, ETH_ALEN, is_mask); | |
1558 | ||
1559 | attrs &= ~(1 << OVS_KEY_ATTR_ARP); | |
1560 | } | |
1561 | ||
b2d0f5d5 YY |
1562 | if (attrs & (1 << OVS_KEY_ATTR_NSH)) { |
1563 | if (nsh_key_put_from_nlattr(a[OVS_KEY_ATTR_NSH], match, | |
1564 | is_mask, false, log) < 0) | |
1565 | return -EINVAL; | |
1566 | attrs &= ~(1 << OVS_KEY_ATTR_NSH); | |
1567 | } | |
1568 | ||
25cd9ba0 SH |
1569 | if (attrs & (1 << OVS_KEY_ATTR_MPLS)) { |
1570 | const struct ovs_key_mpls *mpls_key; | |
1571 | ||
1572 | mpls_key = nla_data(a[OVS_KEY_ATTR_MPLS]); | |
1573 | SW_FLOW_KEY_PUT(match, mpls.top_lse, | |
1574 | mpls_key->mpls_lse, is_mask); | |
1575 | ||
1576 | attrs &= ~(1 << OVS_KEY_ATTR_MPLS); | |
1577 | } | |
1578 | ||
e6445719 PS |
1579 | if (attrs & (1 << OVS_KEY_ATTR_TCP)) { |
1580 | const struct ovs_key_tcp *tcp_key; | |
1581 | ||
1582 | tcp_key = nla_data(a[OVS_KEY_ATTR_TCP]); | |
1139e241 JR |
1583 | SW_FLOW_KEY_PUT(match, tp.src, tcp_key->tcp_src, is_mask); |
1584 | SW_FLOW_KEY_PUT(match, tp.dst, tcp_key->tcp_dst, is_mask); | |
e6445719 PS |
1585 | attrs &= ~(1 << OVS_KEY_ATTR_TCP); |
1586 | } | |
1587 | ||
5eb26b15 | 1588 | if (attrs & (1 << OVS_KEY_ATTR_TCP_FLAGS)) { |
1b760fb9 JS |
1589 | SW_FLOW_KEY_PUT(match, tp.flags, |
1590 | nla_get_be16(a[OVS_KEY_ATTR_TCP_FLAGS]), | |
1591 | is_mask); | |
5eb26b15 JR |
1592 | attrs &= ~(1 << OVS_KEY_ATTR_TCP_FLAGS); |
1593 | } | |
1594 | ||
e6445719 PS |
1595 | if (attrs & (1 << OVS_KEY_ATTR_UDP)) { |
1596 | const struct ovs_key_udp *udp_key; | |
1597 | ||
1598 | udp_key = nla_data(a[OVS_KEY_ATTR_UDP]); | |
1139e241 JR |
1599 | SW_FLOW_KEY_PUT(match, tp.src, udp_key->udp_src, is_mask); |
1600 | SW_FLOW_KEY_PUT(match, tp.dst, udp_key->udp_dst, is_mask); | |
e6445719 PS |
1601 | attrs &= ~(1 << OVS_KEY_ATTR_UDP); |
1602 | } | |
1603 | ||
1604 | if (attrs & (1 << OVS_KEY_ATTR_SCTP)) { | |
1605 | const struct ovs_key_sctp *sctp_key; | |
1606 | ||
1607 | sctp_key = nla_data(a[OVS_KEY_ATTR_SCTP]); | |
1139e241 JR |
1608 | SW_FLOW_KEY_PUT(match, tp.src, sctp_key->sctp_src, is_mask); |
1609 | SW_FLOW_KEY_PUT(match, tp.dst, sctp_key->sctp_dst, is_mask); | |
e6445719 PS |
1610 | attrs &= ~(1 << OVS_KEY_ATTR_SCTP); |
1611 | } | |
1612 | ||
1613 | if (attrs & (1 << OVS_KEY_ATTR_ICMP)) { | |
1614 | const struct ovs_key_icmp *icmp_key; | |
1615 | ||
1616 | icmp_key = nla_data(a[OVS_KEY_ATTR_ICMP]); | |
1139e241 | 1617 | SW_FLOW_KEY_PUT(match, tp.src, |
e6445719 | 1618 | htons(icmp_key->icmp_type), is_mask); |
1139e241 | 1619 | SW_FLOW_KEY_PUT(match, tp.dst, |
e6445719 PS |
1620 | htons(icmp_key->icmp_code), is_mask); |
1621 | attrs &= ~(1 << OVS_KEY_ATTR_ICMP); | |
1622 | } | |
1623 | ||
1624 | if (attrs & (1 << OVS_KEY_ATTR_ICMPV6)) { | |
1625 | const struct ovs_key_icmpv6 *icmpv6_key; | |
1626 | ||
1627 | icmpv6_key = nla_data(a[OVS_KEY_ATTR_ICMPV6]); | |
1139e241 | 1628 | SW_FLOW_KEY_PUT(match, tp.src, |
e6445719 | 1629 | htons(icmpv6_key->icmpv6_type), is_mask); |
1139e241 | 1630 | SW_FLOW_KEY_PUT(match, tp.dst, |
e6445719 PS |
1631 | htons(icmpv6_key->icmpv6_code), is_mask); |
1632 | attrs &= ~(1 << OVS_KEY_ATTR_ICMPV6); | |
1633 | } | |
1634 | ||
1635 | if (attrs & (1 << OVS_KEY_ATTR_ND)) { | |
1636 | const struct ovs_key_nd *nd_key; | |
1637 | ||
1638 | nd_key = nla_data(a[OVS_KEY_ATTR_ND]); | |
1639 | SW_FLOW_KEY_MEMCPY(match, ipv6.nd.target, | |
1640 | nd_key->nd_target, | |
1641 | sizeof(match->key->ipv6.nd.target), | |
1642 | is_mask); | |
1643 | SW_FLOW_KEY_MEMCPY(match, ipv6.nd.sll, | |
1644 | nd_key->nd_sll, ETH_ALEN, is_mask); | |
1645 | SW_FLOW_KEY_MEMCPY(match, ipv6.nd.tll, | |
1646 | nd_key->nd_tll, ETH_ALEN, is_mask); | |
1647 | attrs &= ~(1 << OVS_KEY_ATTR_ND); | |
1648 | } | |
1649 | ||
426cda5c | 1650 | if (attrs != 0) { |
05da5898 | 1651 | OVS_NLERR(log, "Unknown key attributes %llx", |
426cda5c | 1652 | (unsigned long long)attrs); |
e6445719 | 1653 | return -EINVAL; |
426cda5c | 1654 | } |
e6445719 PS |
1655 | |
1656 | return 0; | |
1657 | } | |
1658 | ||
81bfe3c3 TG |
1659 | static void nlattr_set(struct nlattr *attr, u8 val, |
1660 | const struct ovs_len_tbl *tbl) | |
e6445719 | 1661 | { |
f47de068 PS |
1662 | struct nlattr *nla; |
1663 | int rem; | |
e6445719 | 1664 | |
f47de068 PS |
1665 | /* The nlattr stream should already have been validated */ |
1666 | nla_for_each_nested(nla, attr, rem) { | |
982b5270 JG |
1667 | if (tbl[nla_type(nla)].len == OVS_ATTR_NESTED) { |
1668 | if (tbl[nla_type(nla)].next) | |
1669 | tbl = tbl[nla_type(nla)].next; | |
1670 | nlattr_set(nla, val, tbl); | |
1671 | } else { | |
f47de068 | 1672 | memset(nla_data(nla), val, nla_len(nla)); |
982b5270 | 1673 | } |
9e384715 JS |
1674 | |
1675 | if (nla_type(nla) == OVS_KEY_ATTR_CT_STATE) | |
1676 | *(u32 *)nla_data(nla) &= CT_SUPPORTED_MASK; | |
f47de068 PS |
1677 | } |
1678 | } | |
1679 | ||
1680 | static void mask_set_nlattr(struct nlattr *attr, u8 val) | |
1681 | { | |
81bfe3c3 | 1682 | nlattr_set(attr, val, ovs_key_lens); |
e6445719 PS |
1683 | } |
1684 | ||
1685 | /** | |
1686 | * ovs_nla_get_match - parses Netlink attributes into a flow key and | |
1687 | * mask. In case the 'mask' is NULL, the flow is treated as exact match | |
1688 | * flow. Otherwise, it is treated as a wildcarded flow, except the mask | |
1689 | * does not include any don't care bit. | |
c2ac6673 | 1690 | * @net: Used to determine per-namespace field support. |
e6445719 PS |
1691 | * @match: receives the extracted flow match information. |
1692 | * @key: Netlink attribute holding nested %OVS_KEY_ATTR_* Netlink attribute | |
1693 | * sequence. The fields should of the packet that triggered the creation | |
1694 | * of this flow. | |
1695 | * @mask: Optional. Netlink attribute holding nested %OVS_KEY_ATTR_* Netlink | |
1696 | * attribute specifies the mask field of the wildcarded flow. | |
05da5898 JR |
1697 | * @log: Boolean to allow kernel error logging. Normally true, but when |
1698 | * probing for feature compatibility this should be passed in as false to | |
1699 | * suppress unnecessary error logging. | |
e6445719 | 1700 | */ |
c2ac6673 | 1701 | int ovs_nla_get_match(struct net *net, struct sw_flow_match *match, |
a85311bf | 1702 | const struct nlattr *nla_key, |
05da5898 JR |
1703 | const struct nlattr *nla_mask, |
1704 | bool log) | |
e6445719 PS |
1705 | { |
1706 | const struct nlattr *a[OVS_KEY_ATTR_MAX + 1]; | |
f47de068 | 1707 | struct nlattr *newmask = NULL; |
e6445719 PS |
1708 | u64 key_attrs = 0; |
1709 | u64 mask_attrs = 0; | |
e6445719 PS |
1710 | int err; |
1711 | ||
05da5898 | 1712 | err = parse_flow_nlattrs(nla_key, a, &key_attrs, log); |
e6445719 PS |
1713 | if (err) |
1714 | return err; | |
1715 | ||
018c1dda EG |
1716 | err = parse_vlan_from_nlattrs(match, &key_attrs, a, false, log); |
1717 | if (err) | |
1718 | return err; | |
e6445719 | 1719 | |
c2ac6673 | 1720 | err = ovs_key_from_nlattrs(net, match, key_attrs, a, false, log); |
e6445719 PS |
1721 | if (err) |
1722 | return err; | |
1723 | ||
a85311bf PS |
1724 | if (match->mask) { |
1725 | if (!nla_mask) { | |
1726 | /* Create an exact match mask. We need to set to 0xff | |
1727 | * all the 'match->mask' fields that have been touched | |
1728 | * in 'match->key'. We cannot simply memset | |
1729 | * 'match->mask', because padding bytes and fields not | |
1730 | * specified in 'match->key' should be left to 0. | |
1731 | * Instead, we use a stream of netlink attributes, | |
1732 | * copied from 'key' and set to 0xff. | |
1733 | * ovs_key_from_nlattrs() will take care of filling | |
1734 | * 'match->mask' appropriately. | |
1735 | */ | |
1736 | newmask = kmemdup(nla_key, | |
1737 | nla_total_size(nla_len(nla_key)), | |
1738 | GFP_KERNEL); | |
1739 | if (!newmask) | |
1740 | return -ENOMEM; | |
f47de068 | 1741 | |
a85311bf | 1742 | mask_set_nlattr(newmask, 0xff); |
f47de068 | 1743 | |
a85311bf PS |
1744 | /* The userspace does not send tunnel attributes that |
1745 | * are 0, but we should not wildcard them nonetheless. | |
1746 | */ | |
00a93bab | 1747 | if (match->key->tun_proto) |
a85311bf PS |
1748 | SW_FLOW_KEY_MEMSET_FIELD(match, tun_key, |
1749 | 0xff, true); | |
f47de068 | 1750 | |
a85311bf PS |
1751 | nla_mask = newmask; |
1752 | } | |
f47de068 | 1753 | |
05da5898 | 1754 | err = parse_flow_mask_nlattrs(nla_mask, a, &mask_attrs, log); |
e6445719 | 1755 | if (err) |
f47de068 | 1756 | goto free_newmask; |
e6445719 | 1757 | |
a85311bf | 1758 | /* Always match on tci. */ |
018c1dda EG |
1759 | SW_FLOW_KEY_PUT(match, eth.vlan.tci, htons(0xffff), true); |
1760 | SW_FLOW_KEY_PUT(match, eth.cvlan.tci, htons(0xffff), true); | |
e6445719 | 1761 | |
018c1dda EG |
1762 | err = parse_vlan_from_nlattrs(match, &mask_attrs, a, true, log); |
1763 | if (err) | |
1764 | goto free_newmask; | |
e6445719 | 1765 | |
c2ac6673 JS |
1766 | err = ovs_key_from_nlattrs(net, match, mask_attrs, a, true, |
1767 | log); | |
e6445719 | 1768 | if (err) |
f47de068 | 1769 | goto free_newmask; |
e6445719 PS |
1770 | } |
1771 | ||
05da5898 | 1772 | if (!match_validate(match, key_attrs, mask_attrs, log)) |
f47de068 | 1773 | err = -EINVAL; |
e6445719 | 1774 | |
f47de068 PS |
1775 | free_newmask: |
1776 | kfree(newmask); | |
1777 | return err; | |
e6445719 PS |
1778 | } |
1779 | ||
74ed7ab9 JS |
1780 | static size_t get_ufid_len(const struct nlattr *attr, bool log) |
1781 | { | |
1782 | size_t len; | |
1783 | ||
1784 | if (!attr) | |
1785 | return 0; | |
1786 | ||
1787 | len = nla_len(attr); | |
1788 | if (len < 1 || len > MAX_UFID_LENGTH) { | |
1789 | OVS_NLERR(log, "ufid size %u bytes exceeds the range (1, %d)", | |
1790 | nla_len(attr), MAX_UFID_LENGTH); | |
1791 | return 0; | |
1792 | } | |
1793 | ||
1794 | return len; | |
1795 | } | |
1796 | ||
1797 | /* Initializes 'flow->ufid', returning true if 'attr' contains a valid UFID, | |
1798 | * or false otherwise. | |
1799 | */ | |
1800 | bool ovs_nla_get_ufid(struct sw_flow_id *sfid, const struct nlattr *attr, | |
1801 | bool log) | |
1802 | { | |
1803 | sfid->ufid_len = get_ufid_len(attr, log); | |
1804 | if (sfid->ufid_len) | |
1805 | memcpy(sfid->ufid, nla_data(attr), sfid->ufid_len); | |
1806 | ||
1807 | return sfid->ufid_len; | |
1808 | } | |
1809 | ||
1810 | int ovs_nla_get_identifier(struct sw_flow_id *sfid, const struct nlattr *ufid, | |
1811 | const struct sw_flow_key *key, bool log) | |
1812 | { | |
1813 | struct sw_flow_key *new_key; | |
1814 | ||
1815 | if (ovs_nla_get_ufid(sfid, ufid, log)) | |
1816 | return 0; | |
1817 | ||
1818 | /* If UFID was not provided, use unmasked key. */ | |
1819 | new_key = kmalloc(sizeof(*new_key), GFP_KERNEL); | |
1820 | if (!new_key) | |
1821 | return -ENOMEM; | |
1822 | memcpy(new_key, key, sizeof(*key)); | |
1823 | sfid->unmasked_key = new_key; | |
1824 | ||
1825 | return 0; | |
1826 | } | |
1827 | ||
1828 | u32 ovs_nla_get_ufid_flags(const struct nlattr *attr) | |
1829 | { | |
1830 | return attr ? nla_get_u32(attr) : 0; | |
1831 | } | |
1832 | ||
e6445719 PS |
1833 | /** |
1834 | * ovs_nla_get_flow_metadata - parses Netlink attributes into a flow key. | |
9dd7f890 JR |
1835 | * @net: Network namespace. |
1836 | * @key: Receives extracted in_port, priority, tun_key, skb_mark and conntrack | |
1837 | * metadata. | |
1838 | * @a: Array of netlink attributes holding parsed %OVS_KEY_ATTR_* Netlink | |
1839 | * attributes. | |
1840 | * @attrs: Bit mask for the netlink attributes included in @a. | |
05da5898 JR |
1841 | * @log: Boolean to allow kernel error logging. Normally true, but when |
1842 | * probing for feature compatibility this should be passed in as false to | |
1843 | * suppress unnecessary error logging. | |
e6445719 PS |
1844 | * |
1845 | * This parses a series of Netlink attributes that form a flow key, which must | |
1846 | * take the same form accepted by flow_from_nlattrs(), but only enough of it to | |
1847 | * get the metadata, that is, the parts of the flow key that cannot be | |
1848 | * extracted from the packet itself. | |
9dd7f890 JR |
1849 | * |
1850 | * This must be called before the packet key fields are filled in 'key'. | |
e6445719 PS |
1851 | */ |
1852 | ||
9dd7f890 JR |
1853 | int ovs_nla_get_flow_metadata(struct net *net, |
1854 | const struct nlattr *a[OVS_KEY_ATTR_MAX + 1], | |
1855 | u64 attrs, struct sw_flow_key *key, bool log) | |
e6445719 | 1856 | { |
83c8df26 | 1857 | struct sw_flow_match match; |
e6445719 PS |
1858 | |
1859 | memset(&match, 0, sizeof(match)); | |
83c8df26 | 1860 | match.key = key; |
e6445719 | 1861 | |
316d4d78 JR |
1862 | key->ct_state = 0; |
1863 | key->ct_zone = 0; | |
1864 | key->ct_orig_proto = 0; | |
7f8a436e | 1865 | memset(&key->ct, 0, sizeof(key->ct)); |
9dd7f890 JR |
1866 | memset(&key->ipv4.ct_orig, 0, sizeof(key->ipv4.ct_orig)); |
1867 | memset(&key->ipv6.ct_orig, 0, sizeof(key->ipv6.ct_orig)); | |
1868 | ||
83c8df26 | 1869 | key->phy.in_port = DP_MAX_PORTS; |
e6445719 | 1870 | |
c2ac6673 | 1871 | return metadata_from_nlattrs(net, &match, &attrs, a, false, log); |
e6445719 PS |
1872 | } |
1873 | ||
018c1dda EG |
1874 | static int ovs_nla_put_vlan(struct sk_buff *skb, const struct vlan_head *vh, |
1875 | bool is_mask) | |
1876 | { | |
1877 | __be16 eth_type = !is_mask ? vh->tpid : htons(0xffff); | |
1878 | ||
1879 | if (nla_put_be16(skb, OVS_KEY_ATTR_ETHERTYPE, eth_type) || | |
1880 | nla_put_be16(skb, OVS_KEY_ATTR_VLAN, vh->tci)) | |
1881 | return -EMSGSIZE; | |
1882 | return 0; | |
1883 | } | |
1884 | ||
b2d0f5d5 YY |
1885 | static int nsh_key_to_nlattr(const struct ovs_key_nsh *nsh, bool is_mask, |
1886 | struct sk_buff *skb) | |
1887 | { | |
1888 | struct nlattr *start; | |
1889 | ||
1890 | start = nla_nest_start(skb, OVS_KEY_ATTR_NSH); | |
1891 | if (!start) | |
1892 | return -EMSGSIZE; | |
1893 | ||
1894 | if (nla_put(skb, OVS_NSH_KEY_ATTR_BASE, sizeof(nsh->base), &nsh->base)) | |
1895 | goto nla_put_failure; | |
1896 | ||
1897 | if (is_mask || nsh->base.mdtype == NSH_M_TYPE1) { | |
1898 | if (nla_put(skb, OVS_NSH_KEY_ATTR_MD1, | |
1899 | sizeof(nsh->context), nsh->context)) | |
1900 | goto nla_put_failure; | |
1901 | } | |
1902 | ||
1903 | /* Don't support MD type 2 yet */ | |
1904 | ||
1905 | nla_nest_end(skb, start); | |
1906 | ||
1907 | return 0; | |
1908 | ||
1909 | nla_put_failure: | |
1910 | return -EMSGSIZE; | |
1911 | } | |
1912 | ||
5b4237bb JS |
1913 | static int __ovs_nla_put_key(const struct sw_flow_key *swkey, |
1914 | const struct sw_flow_key *output, bool is_mask, | |
1915 | struct sk_buff *skb) | |
e6445719 PS |
1916 | { |
1917 | struct ovs_key_ethernet *eth_key; | |
018c1dda EG |
1918 | struct nlattr *nla; |
1919 | struct nlattr *encap = NULL; | |
1920 | struct nlattr *in_encap = NULL; | |
e6445719 | 1921 | |
971427f3 AZ |
1922 | if (nla_put_u32(skb, OVS_KEY_ATTR_RECIRC_ID, output->recirc_id)) |
1923 | goto nla_put_failure; | |
1924 | ||
1925 | if (nla_put_u32(skb, OVS_KEY_ATTR_DP_HASH, output->ovs_flow_hash)) | |
1926 | goto nla_put_failure; | |
1927 | ||
e6445719 PS |
1928 | if (nla_put_u32(skb, OVS_KEY_ATTR_PRIORITY, output->phy.priority)) |
1929 | goto nla_put_failure; | |
1930 | ||
00a93bab | 1931 | if ((swkey->tun_proto || is_mask)) { |
d91641d9 | 1932 | const void *opts = NULL; |
f5796684 JG |
1933 | |
1934 | if (output->tun_key.tun_flags & TUNNEL_OPTIONS_PRESENT) | |
d91641d9 | 1935 | opts = TUN_METADATA_OPTS(output, swkey->tun_opts_len); |
f5796684 | 1936 | |
6b26ba3a JB |
1937 | if (ip_tun_to_nlattr(skb, &output->tun_key, opts, |
1938 | swkey->tun_opts_len, swkey->tun_proto)) | |
f5796684 JG |
1939 | goto nla_put_failure; |
1940 | } | |
e6445719 PS |
1941 | |
1942 | if (swkey->phy.in_port == DP_MAX_PORTS) { | |
1943 | if (is_mask && (output->phy.in_port == 0xffff)) | |
1944 | if (nla_put_u32(skb, OVS_KEY_ATTR_IN_PORT, 0xffffffff)) | |
1945 | goto nla_put_failure; | |
1946 | } else { | |
1947 | u16 upper_u16; | |
1948 | upper_u16 = !is_mask ? 0 : 0xffff; | |
1949 | ||
1950 | if (nla_put_u32(skb, OVS_KEY_ATTR_IN_PORT, | |
1951 | (upper_u16 << 16) | output->phy.in_port)) | |
1952 | goto nla_put_failure; | |
1953 | } | |
1954 | ||
1955 | if (nla_put_u32(skb, OVS_KEY_ATTR_SKB_MARK, output->phy.skb_mark)) | |
1956 | goto nla_put_failure; | |
1957 | ||
9dd7f890 | 1958 | if (ovs_ct_put_key(swkey, output, skb)) |
7f8a436e JS |
1959 | goto nla_put_failure; |
1960 | ||
0a6410fb JB |
1961 | if (ovs_key_mac_proto(swkey) == MAC_PROTO_ETHERNET) { |
1962 | nla = nla_reserve(skb, OVS_KEY_ATTR_ETHERNET, sizeof(*eth_key)); | |
1963 | if (!nla) | |
e6445719 | 1964 | goto nla_put_failure; |
018c1dda | 1965 | |
0a6410fb JB |
1966 | eth_key = nla_data(nla); |
1967 | ether_addr_copy(eth_key->eth_src, output->eth.src); | |
1968 | ether_addr_copy(eth_key->eth_dst, output->eth.dst); | |
1969 | ||
1970 | if (swkey->eth.vlan.tci || eth_type_vlan(swkey->eth.type)) { | |
1971 | if (ovs_nla_put_vlan(skb, &output->eth.vlan, is_mask)) | |
018c1dda | 1972 | goto nla_put_failure; |
0a6410fb JB |
1973 | encap = nla_nest_start(skb, OVS_KEY_ATTR_ENCAP); |
1974 | if (!swkey->eth.vlan.tci) | |
018c1dda | 1975 | goto unencap; |
0a6410fb JB |
1976 | |
1977 | if (swkey->eth.cvlan.tci || eth_type_vlan(swkey->eth.type)) { | |
1978 | if (ovs_nla_put_vlan(skb, &output->eth.cvlan, is_mask)) | |
1979 | goto nla_put_failure; | |
1980 | in_encap = nla_nest_start(skb, OVS_KEY_ATTR_ENCAP); | |
1981 | if (!swkey->eth.cvlan.tci) | |
1982 | goto unencap; | |
1983 | } | |
018c1dda | 1984 | } |
e6445719 | 1985 | |
0a6410fb JB |
1986 | if (swkey->eth.type == htons(ETH_P_802_2)) { |
1987 | /* | |
1988 | * Ethertype 802.2 is represented in the netlink with omitted | |
1989 | * OVS_KEY_ATTR_ETHERTYPE in the flow key attribute, and | |
1990 | * 0xffff in the mask attribute. Ethertype can also | |
1991 | * be wildcarded. | |
1992 | */ | |
1993 | if (is_mask && output->eth.type) | |
1994 | if (nla_put_be16(skb, OVS_KEY_ATTR_ETHERTYPE, | |
1995 | output->eth.type)) | |
1996 | goto nla_put_failure; | |
1997 | goto unencap; | |
1998 | } | |
e6445719 PS |
1999 | } |
2000 | ||
2001 | if (nla_put_be16(skb, OVS_KEY_ATTR_ETHERTYPE, output->eth.type)) | |
2002 | goto nla_put_failure; | |
2003 | ||
018c1dda EG |
2004 | if (eth_type_vlan(swkey->eth.type)) { |
2005 | /* There are 3 VLAN tags, we don't know anything about the rest | |
2006 | * of the packet, so truncate here. | |
2007 | */ | |
2008 | WARN_ON_ONCE(!(encap && in_encap)); | |
2009 | goto unencap; | |
2010 | } | |
2011 | ||
e6445719 PS |
2012 | if (swkey->eth.type == htons(ETH_P_IP)) { |
2013 | struct ovs_key_ipv4 *ipv4_key; | |
2014 | ||
2015 | nla = nla_reserve(skb, OVS_KEY_ATTR_IPV4, sizeof(*ipv4_key)); | |
2016 | if (!nla) | |
2017 | goto nla_put_failure; | |
2018 | ipv4_key = nla_data(nla); | |
2019 | ipv4_key->ipv4_src = output->ipv4.addr.src; | |
2020 | ipv4_key->ipv4_dst = output->ipv4.addr.dst; | |
2021 | ipv4_key->ipv4_proto = output->ip.proto; | |
2022 | ipv4_key->ipv4_tos = output->ip.tos; | |
2023 | ipv4_key->ipv4_ttl = output->ip.ttl; | |
2024 | ipv4_key->ipv4_frag = output->ip.frag; | |
2025 | } else if (swkey->eth.type == htons(ETH_P_IPV6)) { | |
2026 | struct ovs_key_ipv6 *ipv6_key; | |
2027 | ||
2028 | nla = nla_reserve(skb, OVS_KEY_ATTR_IPV6, sizeof(*ipv6_key)); | |
2029 | if (!nla) | |
2030 | goto nla_put_failure; | |
2031 | ipv6_key = nla_data(nla); | |
2032 | memcpy(ipv6_key->ipv6_src, &output->ipv6.addr.src, | |
2033 | sizeof(ipv6_key->ipv6_src)); | |
2034 | memcpy(ipv6_key->ipv6_dst, &output->ipv6.addr.dst, | |
2035 | sizeof(ipv6_key->ipv6_dst)); | |
2036 | ipv6_key->ipv6_label = output->ipv6.label; | |
2037 | ipv6_key->ipv6_proto = output->ip.proto; | |
2038 | ipv6_key->ipv6_tclass = output->ip.tos; | |
2039 | ipv6_key->ipv6_hlimit = output->ip.ttl; | |
2040 | ipv6_key->ipv6_frag = output->ip.frag; | |
b2d0f5d5 YY |
2041 | } else if (swkey->eth.type == htons(ETH_P_NSH)) { |
2042 | if (nsh_key_to_nlattr(&output->nsh, is_mask, skb)) | |
2043 | goto nla_put_failure; | |
e6445719 PS |
2044 | } else if (swkey->eth.type == htons(ETH_P_ARP) || |
2045 | swkey->eth.type == htons(ETH_P_RARP)) { | |
2046 | struct ovs_key_arp *arp_key; | |
2047 | ||
2048 | nla = nla_reserve(skb, OVS_KEY_ATTR_ARP, sizeof(*arp_key)); | |
2049 | if (!nla) | |
2050 | goto nla_put_failure; | |
2051 | arp_key = nla_data(nla); | |
2052 | memset(arp_key, 0, sizeof(struct ovs_key_arp)); | |
2053 | arp_key->arp_sip = output->ipv4.addr.src; | |
2054 | arp_key->arp_tip = output->ipv4.addr.dst; | |
2055 | arp_key->arp_op = htons(output->ip.proto); | |
8c63ff09 JP |
2056 | ether_addr_copy(arp_key->arp_sha, output->ipv4.arp.sha); |
2057 | ether_addr_copy(arp_key->arp_tha, output->ipv4.arp.tha); | |
25cd9ba0 SH |
2058 | } else if (eth_p_mpls(swkey->eth.type)) { |
2059 | struct ovs_key_mpls *mpls_key; | |
2060 | ||
2061 | nla = nla_reserve(skb, OVS_KEY_ATTR_MPLS, sizeof(*mpls_key)); | |
2062 | if (!nla) | |
2063 | goto nla_put_failure; | |
2064 | mpls_key = nla_data(nla); | |
2065 | mpls_key->mpls_lse = output->mpls.top_lse; | |
e6445719 PS |
2066 | } |
2067 | ||
2068 | if ((swkey->eth.type == htons(ETH_P_IP) || | |
2069 | swkey->eth.type == htons(ETH_P_IPV6)) && | |
2070 | swkey->ip.frag != OVS_FRAG_TYPE_LATER) { | |
2071 | ||
2072 | if (swkey->ip.proto == IPPROTO_TCP) { | |
2073 | struct ovs_key_tcp *tcp_key; | |
2074 | ||
2075 | nla = nla_reserve(skb, OVS_KEY_ATTR_TCP, sizeof(*tcp_key)); | |
2076 | if (!nla) | |
2077 | goto nla_put_failure; | |
2078 | tcp_key = nla_data(nla); | |
1139e241 JR |
2079 | tcp_key->tcp_src = output->tp.src; |
2080 | tcp_key->tcp_dst = output->tp.dst; | |
2081 | if (nla_put_be16(skb, OVS_KEY_ATTR_TCP_FLAGS, | |
2082 | output->tp.flags)) | |
2083 | goto nla_put_failure; | |
e6445719 PS |
2084 | } else if (swkey->ip.proto == IPPROTO_UDP) { |
2085 | struct ovs_key_udp *udp_key; | |
2086 | ||
2087 | nla = nla_reserve(skb, OVS_KEY_ATTR_UDP, sizeof(*udp_key)); | |
2088 | if (!nla) | |
2089 | goto nla_put_failure; | |
2090 | udp_key = nla_data(nla); | |
1139e241 JR |
2091 | udp_key->udp_src = output->tp.src; |
2092 | udp_key->udp_dst = output->tp.dst; | |
e6445719 PS |
2093 | } else if (swkey->ip.proto == IPPROTO_SCTP) { |
2094 | struct ovs_key_sctp *sctp_key; | |
2095 | ||
2096 | nla = nla_reserve(skb, OVS_KEY_ATTR_SCTP, sizeof(*sctp_key)); | |
2097 | if (!nla) | |
2098 | goto nla_put_failure; | |
2099 | sctp_key = nla_data(nla); | |
1139e241 JR |
2100 | sctp_key->sctp_src = output->tp.src; |
2101 | sctp_key->sctp_dst = output->tp.dst; | |
e6445719 PS |
2102 | } else if (swkey->eth.type == htons(ETH_P_IP) && |
2103 | swkey->ip.proto == IPPROTO_ICMP) { | |
2104 | struct ovs_key_icmp *icmp_key; | |
2105 | ||
2106 | nla = nla_reserve(skb, OVS_KEY_ATTR_ICMP, sizeof(*icmp_key)); | |
2107 | if (!nla) | |
2108 | goto nla_put_failure; | |
2109 | icmp_key = nla_data(nla); | |
1139e241 JR |
2110 | icmp_key->icmp_type = ntohs(output->tp.src); |
2111 | icmp_key->icmp_code = ntohs(output->tp.dst); | |
e6445719 PS |
2112 | } else if (swkey->eth.type == htons(ETH_P_IPV6) && |
2113 | swkey->ip.proto == IPPROTO_ICMPV6) { | |
2114 | struct ovs_key_icmpv6 *icmpv6_key; | |
2115 | ||
2116 | nla = nla_reserve(skb, OVS_KEY_ATTR_ICMPV6, | |
2117 | sizeof(*icmpv6_key)); | |
2118 | if (!nla) | |
2119 | goto nla_put_failure; | |
2120 | icmpv6_key = nla_data(nla); | |
1139e241 JR |
2121 | icmpv6_key->icmpv6_type = ntohs(output->tp.src); |
2122 | icmpv6_key->icmpv6_code = ntohs(output->tp.dst); | |
e6445719 PS |
2123 | |
2124 | if (icmpv6_key->icmpv6_type == NDISC_NEIGHBOUR_SOLICITATION || | |
2125 | icmpv6_key->icmpv6_type == NDISC_NEIGHBOUR_ADVERTISEMENT) { | |
2126 | struct ovs_key_nd *nd_key; | |
2127 | ||
2128 | nla = nla_reserve(skb, OVS_KEY_ATTR_ND, sizeof(*nd_key)); | |
2129 | if (!nla) | |
2130 | goto nla_put_failure; | |
2131 | nd_key = nla_data(nla); | |
2132 | memcpy(nd_key->nd_target, &output->ipv6.nd.target, | |
2133 | sizeof(nd_key->nd_target)); | |
8c63ff09 JP |
2134 | ether_addr_copy(nd_key->nd_sll, output->ipv6.nd.sll); |
2135 | ether_addr_copy(nd_key->nd_tll, output->ipv6.nd.tll); | |
e6445719 PS |
2136 | } |
2137 | } | |
2138 | } | |
2139 | ||
2140 | unencap: | |
018c1dda EG |
2141 | if (in_encap) |
2142 | nla_nest_end(skb, in_encap); | |
e6445719 PS |
2143 | if (encap) |
2144 | nla_nest_end(skb, encap); | |
2145 | ||
2146 | return 0; | |
2147 | ||
2148 | nla_put_failure: | |
2149 | return -EMSGSIZE; | |
2150 | } | |
2151 | ||
5b4237bb JS |
2152 | int ovs_nla_put_key(const struct sw_flow_key *swkey, |
2153 | const struct sw_flow_key *output, int attr, bool is_mask, | |
2154 | struct sk_buff *skb) | |
2155 | { | |
2156 | int err; | |
2157 | struct nlattr *nla; | |
2158 | ||
2159 | nla = nla_nest_start(skb, attr); | |
2160 | if (!nla) | |
2161 | return -EMSGSIZE; | |
2162 | err = __ovs_nla_put_key(swkey, output, is_mask, skb); | |
2163 | if (err) | |
2164 | return err; | |
2165 | nla_nest_end(skb, nla); | |
2166 | ||
2167 | return 0; | |
2168 | } | |
2169 | ||
2170 | /* Called with ovs_mutex or RCU read lock. */ | |
74ed7ab9 JS |
2171 | int ovs_nla_put_identifier(const struct sw_flow *flow, struct sk_buff *skb) |
2172 | { | |
2173 | if (ovs_identifier_is_ufid(&flow->id)) | |
2174 | return nla_put(skb, OVS_FLOW_ATTR_UFID, flow->id.ufid_len, | |
2175 | flow->id.ufid); | |
2176 | ||
2177 | return ovs_nla_put_key(flow->id.unmasked_key, flow->id.unmasked_key, | |
2178 | OVS_FLOW_ATTR_KEY, false, skb); | |
2179 | } | |
2180 | ||
2181 | /* Called with ovs_mutex or RCU read lock. */ | |
2182 | int ovs_nla_put_masked_key(const struct sw_flow *flow, struct sk_buff *skb) | |
5b4237bb | 2183 | { |
26ad0b83 | 2184 | return ovs_nla_put_key(&flow->key, &flow->key, |
5b4237bb JS |
2185 | OVS_FLOW_ATTR_KEY, false, skb); |
2186 | } | |
2187 | ||
2188 | /* Called with ovs_mutex or RCU read lock. */ | |
2189 | int ovs_nla_put_mask(const struct sw_flow *flow, struct sk_buff *skb) | |
2190 | { | |
2191 | return ovs_nla_put_key(&flow->key, &flow->mask->key, | |
2192 | OVS_FLOW_ATTR_MASK, true, skb); | |
2193 | } | |
2194 | ||
e6445719 PS |
2195 | #define MAX_ACTIONS_BUFSIZE (32 * 1024) |
2196 | ||
67c8d22a | 2197 | static struct sw_flow_actions *nla_alloc_flow_actions(int size) |
e6445719 PS |
2198 | { |
2199 | struct sw_flow_actions *sfa; | |
2200 | ||
67c8d22a | 2201 | WARN_ON_ONCE(size > MAX_ACTIONS_BUFSIZE); |
e6445719 PS |
2202 | |
2203 | sfa = kmalloc(sizeof(*sfa) + size, GFP_KERNEL); | |
2204 | if (!sfa) | |
2205 | return ERR_PTR(-ENOMEM); | |
2206 | ||
2207 | sfa->actions_len = 0; | |
2208 | return sfa; | |
2209 | } | |
2210 | ||
34ae932a TG |
2211 | static void ovs_nla_free_set_action(const struct nlattr *a) |
2212 | { | |
2213 | const struct nlattr *ovs_key = nla_data(a); | |
2214 | struct ovs_tunnel_info *ovs_tun; | |
2215 | ||
2216 | switch (nla_type(ovs_key)) { | |
2217 | case OVS_KEY_ATTR_TUNNEL_INFO: | |
2218 | ovs_tun = nla_data(ovs_key); | |
2219 | dst_release((struct dst_entry *)ovs_tun->tun_dst); | |
2220 | break; | |
2221 | } | |
2222 | } | |
2223 | ||
2224 | void ovs_nla_free_flow_actions(struct sw_flow_actions *sf_acts) | |
2225 | { | |
2226 | const struct nlattr *a; | |
2227 | int rem; | |
2228 | ||
2229 | if (!sf_acts) | |
2230 | return; | |
2231 | ||
2232 | nla_for_each_attr(a, sf_acts->actions, sf_acts->actions_len, rem) { | |
2233 | switch (nla_type(a)) { | |
2234 | case OVS_ACTION_ATTR_SET: | |
2235 | ovs_nla_free_set_action(a); | |
2236 | break; | |
7f8a436e JS |
2237 | case OVS_ACTION_ATTR_CT: |
2238 | ovs_ct_free_action(a); | |
2239 | break; | |
34ae932a TG |
2240 | } |
2241 | } | |
2242 | ||
2243 | kfree(sf_acts); | |
2244 | } | |
2245 | ||
2246 | static void __ovs_nla_free_flow_actions(struct rcu_head *head) | |
2247 | { | |
2248 | ovs_nla_free_flow_actions(container_of(head, struct sw_flow_actions, rcu)); | |
2249 | } | |
2250 | ||
e6445719 PS |
2251 | /* Schedules 'sf_acts' to be freed after the next RCU grace period. |
2252 | * The caller must hold rcu_read_lock for this to be sensible. */ | |
34ae932a | 2253 | void ovs_nla_free_flow_actions_rcu(struct sw_flow_actions *sf_acts) |
e6445719 | 2254 | { |
34ae932a | 2255 | call_rcu(&sf_acts->rcu, __ovs_nla_free_flow_actions); |
e6445719 PS |
2256 | } |
2257 | ||
2258 | static struct nlattr *reserve_sfa_size(struct sw_flow_actions **sfa, | |
05da5898 | 2259 | int attr_len, bool log) |
e6445719 PS |
2260 | { |
2261 | ||
2262 | struct sw_flow_actions *acts; | |
2263 | int new_acts_size; | |
2264 | int req_size = NLA_ALIGN(attr_len); | |
2265 | int next_offset = offsetof(struct sw_flow_actions, actions) + | |
2266 | (*sfa)->actions_len; | |
2267 | ||
2268 | if (req_size <= (ksize(*sfa) - next_offset)) | |
2269 | goto out; | |
2270 | ||
2271 | new_acts_size = ksize(*sfa) * 2; | |
2272 | ||
2273 | if (new_acts_size > MAX_ACTIONS_BUFSIZE) { | |
67c8d22a | 2274 | if ((MAX_ACTIONS_BUFSIZE - next_offset) < req_size) { |
2275 | OVS_NLERR(log, "Flow action size exceeds max %u", | |
2276 | MAX_ACTIONS_BUFSIZE); | |
e6445719 | 2277 | return ERR_PTR(-EMSGSIZE); |
67c8d22a | 2278 | } |
e6445719 PS |
2279 | new_acts_size = MAX_ACTIONS_BUFSIZE; |
2280 | } | |
2281 | ||
67c8d22a | 2282 | acts = nla_alloc_flow_actions(new_acts_size); |
e6445719 PS |
2283 | if (IS_ERR(acts)) |
2284 | return (void *)acts; | |
2285 | ||
2286 | memcpy(acts->actions, (*sfa)->actions, (*sfa)->actions_len); | |
2287 | acts->actions_len = (*sfa)->actions_len; | |
8e2fed1c | 2288 | acts->orig_len = (*sfa)->orig_len; |
e6445719 PS |
2289 | kfree(*sfa); |
2290 | *sfa = acts; | |
2291 | ||
2292 | out: | |
2293 | (*sfa)->actions_len += req_size; | |
2294 | return (struct nlattr *) ((unsigned char *)(*sfa) + next_offset); | |
2295 | } | |
2296 | ||
f0b128c1 | 2297 | static struct nlattr *__add_action(struct sw_flow_actions **sfa, |
05da5898 | 2298 | int attrtype, void *data, int len, bool log) |
e6445719 PS |
2299 | { |
2300 | struct nlattr *a; | |
2301 | ||
05da5898 | 2302 | a = reserve_sfa_size(sfa, nla_attr_size(len), log); |
e6445719 | 2303 | if (IS_ERR(a)) |
f0b128c1 | 2304 | return a; |
e6445719 PS |
2305 | |
2306 | a->nla_type = attrtype; | |
2307 | a->nla_len = nla_attr_size(len); | |
2308 | ||
2309 | if (data) | |
2310 | memcpy(nla_data(a), data, len); | |
2311 | memset((unsigned char *) a + a->nla_len, 0, nla_padlen(len)); | |
2312 | ||
f0b128c1 JG |
2313 | return a; |
2314 | } | |
2315 | ||
7f8a436e JS |
2316 | int ovs_nla_add_action(struct sw_flow_actions **sfa, int attrtype, void *data, |
2317 | int len, bool log) | |
f0b128c1 JG |
2318 | { |
2319 | struct nlattr *a; | |
2320 | ||
05da5898 | 2321 | a = __add_action(sfa, attrtype, data, len, log); |
f0b128c1 | 2322 | |
f35423c1 | 2323 | return PTR_ERR_OR_ZERO(a); |
e6445719 PS |
2324 | } |
2325 | ||
2326 | static inline int add_nested_action_start(struct sw_flow_actions **sfa, | |
05da5898 | 2327 | int attrtype, bool log) |
e6445719 PS |
2328 | { |
2329 | int used = (*sfa)->actions_len; | |
2330 | int err; | |
2331 | ||
7f8a436e | 2332 | err = ovs_nla_add_action(sfa, attrtype, NULL, 0, log); |
e6445719 PS |
2333 | if (err) |
2334 | return err; | |
2335 | ||
2336 | return used; | |
2337 | } | |
2338 | ||
2339 | static inline void add_nested_action_end(struct sw_flow_actions *sfa, | |
2340 | int st_offset) | |
2341 | { | |
2342 | struct nlattr *a = (struct nlattr *) ((unsigned char *)sfa->actions + | |
2343 | st_offset); | |
2344 | ||
2345 | a->nla_len = sfa->actions_len - st_offset; | |
2346 | } | |
2347 | ||
7f8a436e | 2348 | static int __ovs_nla_copy_actions(struct net *net, const struct nlattr *attr, |
25cd9ba0 | 2349 | const struct sw_flow_key *key, |
798c1661 | 2350 | struct sw_flow_actions **sfa, |
05da5898 | 2351 | __be16 eth_type, __be16 vlan_tci, bool log); |
25cd9ba0 | 2352 | |
7f8a436e | 2353 | static int validate_and_copy_sample(struct net *net, const struct nlattr *attr, |
798c1661 | 2354 | const struct sw_flow_key *key, |
25cd9ba0 | 2355 | struct sw_flow_actions **sfa, |
798c1661 | 2356 | __be16 eth_type, __be16 vlan_tci, |
2357 | bool log, bool last) | |
e6445719 PS |
2358 | { |
2359 | const struct nlattr *attrs[OVS_SAMPLE_ATTR_MAX + 1]; | |
2360 | const struct nlattr *probability, *actions; | |
2361 | const struct nlattr *a; | |
798c1661 | 2362 | int rem, start, err; |
2363 | struct sample_arg arg; | |
e6445719 PS |
2364 | |
2365 | memset(attrs, 0, sizeof(attrs)); | |
2366 | nla_for_each_nested(a, attr, rem) { | |
2367 | int type = nla_type(a); | |
2368 | if (!type || type > OVS_SAMPLE_ATTR_MAX || attrs[type]) | |
2369 | return -EINVAL; | |
2370 | attrs[type] = a; | |
2371 | } | |
2372 | if (rem) | |
2373 | return -EINVAL; | |
2374 | ||
2375 | probability = attrs[OVS_SAMPLE_ATTR_PROBABILITY]; | |
2376 | if (!probability || nla_len(probability) != sizeof(u32)) | |
2377 | return -EINVAL; | |
2378 | ||
2379 | actions = attrs[OVS_SAMPLE_ATTR_ACTIONS]; | |
2380 | if (!actions || (nla_len(actions) && nla_len(actions) < NLA_HDRLEN)) | |
2381 | return -EINVAL; | |
2382 | ||
2383 | /* validation done, copy sample action. */ | |
05da5898 | 2384 | start = add_nested_action_start(sfa, OVS_ACTION_ATTR_SAMPLE, log); |
e6445719 PS |
2385 | if (start < 0) |
2386 | return start; | |
798c1661 | 2387 | |
2388 | /* When both skb and flow may be changed, put the sample | |
2389 | * into a deferred fifo. On the other hand, if only skb | |
2390 | * may be modified, the actions can be executed in place. | |
2391 | * | |
2392 | * Do this analysis at the flow installation time. | |
2393 | * Set 'clone_action->exec' to true if the actions can be | |
2394 | * executed without being deferred. | |
2395 | * | |
2396 | * If the sample is the last action, it can always be excuted | |
2397 | * rather than deferred. | |
2398 | */ | |
2399 | arg.exec = last || !actions_may_change_flow(actions); | |
2400 | arg.probability = nla_get_u32(probability); | |
2401 | ||
2402 | err = ovs_nla_add_action(sfa, OVS_SAMPLE_ATTR_ARG, &arg, sizeof(arg), | |
2403 | log); | |
e6445719 PS |
2404 | if (err) |
2405 | return err; | |
e6445719 | 2406 | |
798c1661 | 2407 | err = __ovs_nla_copy_actions(net, actions, key, sfa, |
05da5898 | 2408 | eth_type, vlan_tci, log); |
798c1661 | 2409 | |
e6445719 PS |
2410 | if (err) |
2411 | return err; | |
2412 | ||
e6445719 PS |
2413 | add_nested_action_end(*sfa, start); |
2414 | ||
2415 | return 0; | |
2416 | } | |
2417 | ||
e6445719 PS |
2418 | void ovs_match_init(struct sw_flow_match *match, |
2419 | struct sw_flow_key *key, | |
2279994d | 2420 | bool reset_key, |
e6445719 PS |
2421 | struct sw_flow_mask *mask) |
2422 | { | |
2423 | memset(match, 0, sizeof(*match)); | |
2424 | match->key = key; | |
2425 | match->mask = mask; | |
2426 | ||
2279994d | 2427 | if (reset_key) |
2428 | memset(key, 0, sizeof(*key)); | |
e6445719 PS |
2429 | |
2430 | if (mask) { | |
2431 | memset(&mask->key, 0, sizeof(mask->key)); | |
2432 | mask->range.start = mask->range.end = 0; | |
2433 | } | |
2434 | } | |
2435 | ||
d91641d9 TG |
2436 | static int validate_geneve_opts(struct sw_flow_key *key) |
2437 | { | |
2438 | struct geneve_opt *option; | |
2439 | int opts_len = key->tun_opts_len; | |
2440 | bool crit_opt = false; | |
2441 | ||
2442 | option = (struct geneve_opt *)TUN_METADATA_OPTS(key, key->tun_opts_len); | |
2443 | while (opts_len > 0) { | |
2444 | int len; | |
2445 | ||
2446 | if (opts_len < sizeof(*option)) | |
2447 | return -EINVAL; | |
2448 | ||
2449 | len = sizeof(*option) + option->length * 4; | |
2450 | if (len > opts_len) | |
2451 | return -EINVAL; | |
2452 | ||
2453 | crit_opt |= !!(option->type & GENEVE_CRIT_OPT_TYPE); | |
2454 | ||
2455 | option = (struct geneve_opt *)((u8 *)option + len); | |
2456 | opts_len -= len; | |
2457 | }; | |
2458 | ||
2459 | key->tun_key.tun_flags |= crit_opt ? TUNNEL_CRIT_OPT : 0; | |
2460 | ||
2461 | return 0; | |
2462 | } | |
2463 | ||
e6445719 | 2464 | static int validate_and_copy_set_tun(const struct nlattr *attr, |
05da5898 | 2465 | struct sw_flow_actions **sfa, bool log) |
e6445719 PS |
2466 | { |
2467 | struct sw_flow_match match; | |
2468 | struct sw_flow_key key; | |
34ae932a | 2469 | struct metadata_dst *tun_dst; |
1d8fff90 | 2470 | struct ip_tunnel_info *tun_info; |
34ae932a | 2471 | struct ovs_tunnel_info *ovs_tun; |
f0b128c1 | 2472 | struct nlattr *a; |
13101602 | 2473 | int err = 0, start, opts_type; |
e6445719 | 2474 | |
2279994d | 2475 | ovs_match_init(&match, &key, true, NULL); |
6b26ba3a | 2476 | opts_type = ip_tun_from_nlattr(nla_data(attr), &match, false, log); |
1dd144cf TG |
2477 | if (opts_type < 0) |
2478 | return opts_type; | |
e6445719 | 2479 | |
f5796684 | 2480 | if (key.tun_opts_len) { |
1dd144cf TG |
2481 | switch (opts_type) { |
2482 | case OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS: | |
2483 | err = validate_geneve_opts(&key); | |
2484 | if (err < 0) | |
2485 | return err; | |
2486 | break; | |
2487 | case OVS_TUNNEL_KEY_ATTR_VXLAN_OPTS: | |
2488 | break; | |
2489 | } | |
f5796684 JG |
2490 | }; |
2491 | ||
05da5898 | 2492 | start = add_nested_action_start(sfa, OVS_ACTION_ATTR_SET, log); |
e6445719 PS |
2493 | if (start < 0) |
2494 | return start; | |
2495 | ||
3fcece12 JK |
2496 | tun_dst = metadata_dst_alloc(key.tun_opts_len, METADATA_IP_TUNNEL, |
2497 | GFP_KERNEL); | |
2498 | ||
34ae932a TG |
2499 | if (!tun_dst) |
2500 | return -ENOMEM; | |
2501 | ||
d71785ff PA |
2502 | err = dst_cache_init(&tun_dst->u.tun_info.dst_cache, GFP_KERNEL); |
2503 | if (err) { | |
2504 | dst_release((struct dst_entry *)tun_dst); | |
2505 | return err; | |
2506 | } | |
2507 | ||
f0b128c1 | 2508 | a = __add_action(sfa, OVS_KEY_ATTR_TUNNEL_INFO, NULL, |
34ae932a TG |
2509 | sizeof(*ovs_tun), log); |
2510 | if (IS_ERR(a)) { | |
2511 | dst_release((struct dst_entry *)tun_dst); | |
f0b128c1 | 2512 | return PTR_ERR(a); |
34ae932a TG |
2513 | } |
2514 | ||
2515 | ovs_tun = nla_data(a); | |
2516 | ovs_tun->tun_dst = tun_dst; | |
f0b128c1 | 2517 | |
34ae932a TG |
2518 | tun_info = &tun_dst->u.tun_info; |
2519 | tun_info->mode = IP_TUNNEL_INFO_TX; | |
00a93bab JB |
2520 | if (key.tun_proto == AF_INET6) |
2521 | tun_info->mode |= IP_TUNNEL_INFO_IPV6; | |
1d8fff90 | 2522 | tun_info->key = key.tun_key; |
f0b128c1 | 2523 | |
4c222798 PS |
2524 | /* We need to store the options in the action itself since |
2525 | * everything else will go away after flow setup. We can append | |
2526 | * it to tun_info and then point there. | |
2527 | */ | |
2528 | ip_tunnel_info_opts_set(tun_info, | |
2529 | TUN_METADATA_OPTS(&key, key.tun_opts_len), | |
2530 | key.tun_opts_len); | |
e6445719 PS |
2531 | add_nested_action_end(*sfa, start); |
2532 | ||
2533 | return err; | |
2534 | } | |
2535 | ||
b2d0f5d5 YY |
2536 | static bool validate_nsh(const struct nlattr *attr, bool is_mask, |
2537 | bool is_push_nsh, bool log) | |
2538 | { | |
2539 | struct sw_flow_match match; | |
2540 | struct sw_flow_key key; | |
2541 | int ret = 0; | |
2542 | ||
2543 | ovs_match_init(&match, &key, true, NULL); | |
2544 | ret = nsh_key_put_from_nlattr(attr, &match, is_mask, | |
2545 | is_push_nsh, log); | |
2546 | return !ret; | |
2547 | } | |
2548 | ||
83d2b9ba JR |
2549 | /* Return false if there are any non-masked bits set. |
2550 | * Mask follows data immediately, before any netlink padding. | |
2551 | */ | |
2552 | static bool validate_masked(u8 *data, int len) | |
2553 | { | |
2554 | u8 *mask = data + len; | |
2555 | ||
2556 | while (len--) | |
2557 | if (*data++ & ~*mask++) | |
2558 | return false; | |
2559 | ||
2560 | return true; | |
2561 | } | |
2562 | ||
e6445719 PS |
2563 | static int validate_set(const struct nlattr *a, |
2564 | const struct sw_flow_key *flow_key, | |
0a6410fb JB |
2565 | struct sw_flow_actions **sfa, bool *skip_copy, |
2566 | u8 mac_proto, __be16 eth_type, bool masked, bool log) | |
e6445719 PS |
2567 | { |
2568 | const struct nlattr *ovs_key = nla_data(a); | |
2569 | int key_type = nla_type(ovs_key); | |
83d2b9ba | 2570 | size_t key_len; |
e6445719 PS |
2571 | |
2572 | /* There can be only one key in a action */ | |
2573 | if (nla_total_size(nla_len(ovs_key)) != nla_len(a)) | |
2574 | return -EINVAL; | |
2575 | ||
83d2b9ba JR |
2576 | key_len = nla_len(ovs_key); |
2577 | if (masked) | |
2578 | key_len /= 2; | |
2579 | ||
e6445719 | 2580 | if (key_type > OVS_KEY_ATTR_MAX || |
982b5270 | 2581 | !check_attr_len(key_len, ovs_key_lens[key_type].len)) |
e6445719 PS |
2582 | return -EINVAL; |
2583 | ||
83d2b9ba JR |
2584 | if (masked && !validate_masked(nla_data(ovs_key), key_len)) |
2585 | return -EINVAL; | |
2586 | ||
e6445719 PS |
2587 | switch (key_type) { |
2588 | const struct ovs_key_ipv4 *ipv4_key; | |
2589 | const struct ovs_key_ipv6 *ipv6_key; | |
2590 | int err; | |
2591 | ||
2592 | case OVS_KEY_ATTR_PRIORITY: | |
2593 | case OVS_KEY_ATTR_SKB_MARK: | |
182e3042 | 2594 | case OVS_KEY_ATTR_CT_MARK: |
33db4125 | 2595 | case OVS_KEY_ATTR_CT_LABELS: |
e6445719 PS |
2596 | break; |
2597 | ||
0a6410fb JB |
2598 | case OVS_KEY_ATTR_ETHERNET: |
2599 | if (mac_proto != MAC_PROTO_ETHERNET) | |
2600 | return -EINVAL; | |
87e159c5 | 2601 | break; |
0a6410fb | 2602 | |
e6445719 | 2603 | case OVS_KEY_ATTR_TUNNEL: |
83d2b9ba JR |
2604 | if (masked) |
2605 | return -EINVAL; /* Masked tunnel set not supported. */ | |
2606 | ||
2607 | *skip_copy = true; | |
05da5898 | 2608 | err = validate_and_copy_set_tun(a, sfa, log); |
e6445719 PS |
2609 | if (err) |
2610 | return err; | |
2611 | break; | |
2612 | ||
2613 | case OVS_KEY_ATTR_IPV4: | |
25cd9ba0 | 2614 | if (eth_type != htons(ETH_P_IP)) |
e6445719 PS |
2615 | return -EINVAL; |
2616 | ||
e6445719 | 2617 | ipv4_key = nla_data(ovs_key); |
e6445719 | 2618 | |
83d2b9ba JR |
2619 | if (masked) { |
2620 | const struct ovs_key_ipv4 *mask = ipv4_key + 1; | |
e6445719 | 2621 | |
83d2b9ba JR |
2622 | /* Non-writeable fields. */ |
2623 | if (mask->ipv4_proto || mask->ipv4_frag) | |
2624 | return -EINVAL; | |
2625 | } else { | |
2626 | if (ipv4_key->ipv4_proto != flow_key->ip.proto) | |
2627 | return -EINVAL; | |
2628 | ||
2629 | if (ipv4_key->ipv4_frag != flow_key->ip.frag) | |
2630 | return -EINVAL; | |
2631 | } | |
e6445719 PS |
2632 | break; |
2633 | ||
2634 | case OVS_KEY_ATTR_IPV6: | |
25cd9ba0 | 2635 | if (eth_type != htons(ETH_P_IPV6)) |
e6445719 PS |
2636 | return -EINVAL; |
2637 | ||
e6445719 | 2638 | ipv6_key = nla_data(ovs_key); |
e6445719 | 2639 | |
83d2b9ba JR |
2640 | if (masked) { |
2641 | const struct ovs_key_ipv6 *mask = ipv6_key + 1; | |
2642 | ||
2643 | /* Non-writeable fields. */ | |
2644 | if (mask->ipv6_proto || mask->ipv6_frag) | |
2645 | return -EINVAL; | |
2646 | ||
2647 | /* Invalid bits in the flow label mask? */ | |
2648 | if (ntohl(mask->ipv6_label) & 0xFFF00000) | |
2649 | return -EINVAL; | |
2650 | } else { | |
2651 | if (ipv6_key->ipv6_proto != flow_key->ip.proto) | |
2652 | return -EINVAL; | |
e6445719 | 2653 | |
83d2b9ba JR |
2654 | if (ipv6_key->ipv6_frag != flow_key->ip.frag) |
2655 | return -EINVAL; | |
2656 | } | |
e6445719 PS |
2657 | if (ntohl(ipv6_key->ipv6_label) & 0xFFF00000) |
2658 | return -EINVAL; | |
2659 | ||
2660 | break; | |
2661 | ||
2662 | case OVS_KEY_ATTR_TCP: | |
83d2b9ba JR |
2663 | if ((eth_type != htons(ETH_P_IP) && |
2664 | eth_type != htons(ETH_P_IPV6)) || | |
2665 | flow_key->ip.proto != IPPROTO_TCP) | |
e6445719 PS |
2666 | return -EINVAL; |
2667 | ||
83d2b9ba | 2668 | break; |
e6445719 PS |
2669 | |
2670 | case OVS_KEY_ATTR_UDP: | |
83d2b9ba JR |
2671 | if ((eth_type != htons(ETH_P_IP) && |
2672 | eth_type != htons(ETH_P_IPV6)) || | |
2673 | flow_key->ip.proto != IPPROTO_UDP) | |
e6445719 PS |
2674 | return -EINVAL; |
2675 | ||
83d2b9ba | 2676 | break; |
25cd9ba0 SH |
2677 | |
2678 | case OVS_KEY_ATTR_MPLS: | |
2679 | if (!eth_p_mpls(eth_type)) | |
2680 | return -EINVAL; | |
2681 | break; | |
e6445719 PS |
2682 | |
2683 | case OVS_KEY_ATTR_SCTP: | |
83d2b9ba JR |
2684 | if ((eth_type != htons(ETH_P_IP) && |
2685 | eth_type != htons(ETH_P_IPV6)) || | |
2686 | flow_key->ip.proto != IPPROTO_SCTP) | |
e6445719 PS |
2687 | return -EINVAL; |
2688 | ||
83d2b9ba | 2689 | break; |
e6445719 | 2690 | |
b2d0f5d5 YY |
2691 | case OVS_KEY_ATTR_NSH: |
2692 | if (eth_type != htons(ETH_P_NSH)) | |
2693 | return -EINVAL; | |
2694 | if (!validate_nsh(nla_data(a), masked, false, log)) | |
2695 | return -EINVAL; | |
2696 | break; | |
2697 | ||
e6445719 PS |
2698 | default: |
2699 | return -EINVAL; | |
2700 | } | |
2701 | ||
83d2b9ba JR |
2702 | /* Convert non-masked non-tunnel set actions to masked set actions. */ |
2703 | if (!masked && key_type != OVS_KEY_ATTR_TUNNEL) { | |
2704 | int start, len = key_len * 2; | |
2705 | struct nlattr *at; | |
2706 | ||
2707 | *skip_copy = true; | |
2708 | ||
2709 | start = add_nested_action_start(sfa, | |
2710 | OVS_ACTION_ATTR_SET_TO_MASKED, | |
2711 | log); | |
2712 | if (start < 0) | |
2713 | return start; | |
2714 | ||
2715 | at = __add_action(sfa, key_type, NULL, len, log); | |
2716 | if (IS_ERR(at)) | |
2717 | return PTR_ERR(at); | |
2718 | ||
2719 | memcpy(nla_data(at), nla_data(ovs_key), key_len); /* Key. */ | |
2720 | memset(nla_data(at) + key_len, 0xff, key_len); /* Mask. */ | |
2721 | /* Clear non-writeable bits from otherwise writeable fields. */ | |
2722 | if (key_type == OVS_KEY_ATTR_IPV6) { | |
2723 | struct ovs_key_ipv6 *mask = nla_data(at) + key_len; | |
2724 | ||
2725 | mask->ipv6_label &= htonl(0x000FFFFF); | |
2726 | } | |
2727 | add_nested_action_end(*sfa, start); | |
2728 | } | |
2729 | ||
e6445719 PS |
2730 | return 0; |
2731 | } | |
2732 | ||
2733 | static int validate_userspace(const struct nlattr *attr) | |
2734 | { | |
2735 | static const struct nla_policy userspace_policy[OVS_USERSPACE_ATTR_MAX + 1] = { | |
2736 | [OVS_USERSPACE_ATTR_PID] = {.type = NLA_U32 }, | |
2737 | [OVS_USERSPACE_ATTR_USERDATA] = {.type = NLA_UNSPEC }, | |
8f0aad6f | 2738 | [OVS_USERSPACE_ATTR_EGRESS_TUN_PORT] = {.type = NLA_U32 }, |
e6445719 PS |
2739 | }; |
2740 | struct nlattr *a[OVS_USERSPACE_ATTR_MAX + 1]; | |
2741 | int error; | |
2742 | ||
fceb6435 JB |
2743 | error = nla_parse_nested(a, OVS_USERSPACE_ATTR_MAX, attr, |
2744 | userspace_policy, NULL); | |
e6445719 PS |
2745 | if (error) |
2746 | return error; | |
2747 | ||
2748 | if (!a[OVS_USERSPACE_ATTR_PID] || | |
2749 | !nla_get_u32(a[OVS_USERSPACE_ATTR_PID])) | |
2750 | return -EINVAL; | |
2751 | ||
2752 | return 0; | |
2753 | } | |
2754 | ||
2755 | static int copy_action(const struct nlattr *from, | |
05da5898 | 2756 | struct sw_flow_actions **sfa, bool log) |
e6445719 PS |
2757 | { |
2758 | int totlen = NLA_ALIGN(from->nla_len); | |
2759 | struct nlattr *to; | |
2760 | ||
05da5898 | 2761 | to = reserve_sfa_size(sfa, from->nla_len, log); |
e6445719 PS |
2762 | if (IS_ERR(to)) |
2763 | return PTR_ERR(to); | |
2764 | ||
2765 | memcpy(to, from, totlen); | |
2766 | return 0; | |
2767 | } | |
2768 | ||
7f8a436e | 2769 | static int __ovs_nla_copy_actions(struct net *net, const struct nlattr *attr, |
25cd9ba0 | 2770 | const struct sw_flow_key *key, |
798c1661 | 2771 | struct sw_flow_actions **sfa, |
05da5898 | 2772 | __be16 eth_type, __be16 vlan_tci, bool log) |
e6445719 | 2773 | { |
0a6410fb | 2774 | u8 mac_proto = ovs_key_mac_proto(key); |
e6445719 PS |
2775 | const struct nlattr *a; |
2776 | int rem, err; | |
2777 | ||
e6445719 PS |
2778 | nla_for_each_nested(a, attr, rem) { |
2779 | /* Expected argument lengths, (u32)-1 for variable length. */ | |
2780 | static const u32 action_lens[OVS_ACTION_ATTR_MAX + 1] = { | |
2781 | [OVS_ACTION_ATTR_OUTPUT] = sizeof(u32), | |
971427f3 | 2782 | [OVS_ACTION_ATTR_RECIRC] = sizeof(u32), |
e6445719 | 2783 | [OVS_ACTION_ATTR_USERSPACE] = (u32)-1, |
25cd9ba0 SH |
2784 | [OVS_ACTION_ATTR_PUSH_MPLS] = sizeof(struct ovs_action_push_mpls), |
2785 | [OVS_ACTION_ATTR_POP_MPLS] = sizeof(__be16), | |
e6445719 PS |
2786 | [OVS_ACTION_ATTR_PUSH_VLAN] = sizeof(struct ovs_action_push_vlan), |
2787 | [OVS_ACTION_ATTR_POP_VLAN] = 0, | |
2788 | [OVS_ACTION_ATTR_SET] = (u32)-1, | |
83d2b9ba | 2789 | [OVS_ACTION_ATTR_SET_MASKED] = (u32)-1, |
971427f3 | 2790 | [OVS_ACTION_ATTR_SAMPLE] = (u32)-1, |
7f8a436e JS |
2791 | [OVS_ACTION_ATTR_HASH] = sizeof(struct ovs_action_hash), |
2792 | [OVS_ACTION_ATTR_CT] = (u32)-1, | |
b8226962 | 2793 | [OVS_ACTION_ATTR_CT_CLEAR] = 0, |
f2a4d086 | 2794 | [OVS_ACTION_ATTR_TRUNC] = sizeof(struct ovs_action_trunc), |
91820da6 JB |
2795 | [OVS_ACTION_ATTR_PUSH_ETH] = sizeof(struct ovs_action_push_eth), |
2796 | [OVS_ACTION_ATTR_POP_ETH] = 0, | |
b2d0f5d5 YY |
2797 | [OVS_ACTION_ATTR_PUSH_NSH] = (u32)-1, |
2798 | [OVS_ACTION_ATTR_POP_NSH] = 0, | |
cd8a6c33 | 2799 | [OVS_ACTION_ATTR_METER] = sizeof(u32), |
e6445719 PS |
2800 | }; |
2801 | const struct ovs_action_push_vlan *vlan; | |
2802 | int type = nla_type(a); | |
2803 | bool skip_copy; | |
2804 | ||
2805 | if (type > OVS_ACTION_ATTR_MAX || | |
2806 | (action_lens[type] != nla_len(a) && | |
2807 | action_lens[type] != (u32)-1)) | |
2808 | return -EINVAL; | |
2809 | ||
2810 | skip_copy = false; | |
2811 | switch (type) { | |
2812 | case OVS_ACTION_ATTR_UNSPEC: | |
2813 | return -EINVAL; | |
2814 | ||
2815 | case OVS_ACTION_ATTR_USERSPACE: | |
2816 | err = validate_userspace(a); | |
2817 | if (err) | |
2818 | return err; | |
2819 | break; | |
2820 | ||
2821 | case OVS_ACTION_ATTR_OUTPUT: | |
2822 | if (nla_get_u32(a) >= DP_MAX_PORTS) | |
2823 | return -EINVAL; | |
2824 | break; | |
2825 | ||
f2a4d086 WT |
2826 | case OVS_ACTION_ATTR_TRUNC: { |
2827 | const struct ovs_action_trunc *trunc = nla_data(a); | |
2828 | ||
2829 | if (trunc->max_len < ETH_HLEN) | |
2830 | return -EINVAL; | |
2831 | break; | |
2832 | } | |
2833 | ||
971427f3 AZ |
2834 | case OVS_ACTION_ATTR_HASH: { |
2835 | const struct ovs_action_hash *act_hash = nla_data(a); | |
2836 | ||
2837 | switch (act_hash->hash_alg) { | |
2838 | case OVS_HASH_ALG_L4: | |
2839 | break; | |
2840 | default: | |
2841 | return -EINVAL; | |
2842 | } | |
2843 | ||
2844 | break; | |
2845 | } | |
e6445719 PS |
2846 | |
2847 | case OVS_ACTION_ATTR_POP_VLAN: | |
0a6410fb JB |
2848 | if (mac_proto != MAC_PROTO_ETHERNET) |
2849 | return -EINVAL; | |
25cd9ba0 | 2850 | vlan_tci = htons(0); |
e6445719 PS |
2851 | break; |
2852 | ||
2853 | case OVS_ACTION_ATTR_PUSH_VLAN: | |
0a6410fb JB |
2854 | if (mac_proto != MAC_PROTO_ETHERNET) |
2855 | return -EINVAL; | |
e6445719 | 2856 | vlan = nla_data(a); |
018c1dda | 2857 | if (!eth_type_vlan(vlan->vlan_tpid)) |
e6445719 PS |
2858 | return -EINVAL; |
2859 | if (!(vlan->vlan_tci & htons(VLAN_TAG_PRESENT))) | |
2860 | return -EINVAL; | |
25cd9ba0 | 2861 | vlan_tci = vlan->vlan_tci; |
e6445719 PS |
2862 | break; |
2863 | ||
971427f3 AZ |
2864 | case OVS_ACTION_ATTR_RECIRC: |
2865 | break; | |
2866 | ||
25cd9ba0 SH |
2867 | case OVS_ACTION_ATTR_PUSH_MPLS: { |
2868 | const struct ovs_action_push_mpls *mpls = nla_data(a); | |
2869 | ||
25cd9ba0 SH |
2870 | if (!eth_p_mpls(mpls->mpls_ethertype)) |
2871 | return -EINVAL; | |
2872 | /* Prohibit push MPLS other than to a white list | |
2873 | * for packets that have a known tag order. | |
2874 | */ | |
2875 | if (vlan_tci & htons(VLAN_TAG_PRESENT) || | |
2876 | (eth_type != htons(ETH_P_IP) && | |
2877 | eth_type != htons(ETH_P_IPV6) && | |
2878 | eth_type != htons(ETH_P_ARP) && | |
2879 | eth_type != htons(ETH_P_RARP) && | |
2880 | !eth_p_mpls(eth_type))) | |
2881 | return -EINVAL; | |
2882 | eth_type = mpls->mpls_ethertype; | |
2883 | break; | |
2884 | } | |
2885 | ||
2886 | case OVS_ACTION_ATTR_POP_MPLS: | |
2887 | if (vlan_tci & htons(VLAN_TAG_PRESENT) || | |
2888 | !eth_p_mpls(eth_type)) | |
2889 | return -EINVAL; | |
2890 | ||
2891 | /* Disallow subsequent L2.5+ set and mpls_pop actions | |
2892 | * as there is no check here to ensure that the new | |
2893 | * eth_type is valid and thus set actions could | |
2894 | * write off the end of the packet or otherwise | |
2895 | * corrupt it. | |
2896 | * | |
2897 | * Support for these actions is planned using packet | |
2898 | * recirculation. | |
2899 | */ | |
2900 | eth_type = htons(0); | |
2901 | break; | |
2902 | ||
e6445719 | 2903 | case OVS_ACTION_ATTR_SET: |
25cd9ba0 | 2904 | err = validate_set(a, key, sfa, |
0a6410fb JB |
2905 | &skip_copy, mac_proto, eth_type, |
2906 | false, log); | |
83d2b9ba JR |
2907 | if (err) |
2908 | return err; | |
2909 | break; | |
2910 | ||
2911 | case OVS_ACTION_ATTR_SET_MASKED: | |
2912 | err = validate_set(a, key, sfa, | |
0a6410fb JB |
2913 | &skip_copy, mac_proto, eth_type, |
2914 | true, log); | |
e6445719 PS |
2915 | if (err) |
2916 | return err; | |
2917 | break; | |
2918 | ||
798c1661 | 2919 | case OVS_ACTION_ATTR_SAMPLE: { |
2920 | bool last = nla_is_last(a, rem); | |
2921 | ||
2922 | err = validate_and_copy_sample(net, a, key, sfa, | |
2923 | eth_type, vlan_tci, | |
2924 | log, last); | |
e6445719 PS |
2925 | if (err) |
2926 | return err; | |
2927 | skip_copy = true; | |
2928 | break; | |
798c1661 | 2929 | } |
e6445719 | 2930 | |
7f8a436e JS |
2931 | case OVS_ACTION_ATTR_CT: |
2932 | err = ovs_ct_copy_action(net, a, key, sfa, log); | |
2933 | if (err) | |
2934 | return err; | |
2935 | skip_copy = true; | |
2936 | break; | |
2937 | ||
b8226962 EG |
2938 | case OVS_ACTION_ATTR_CT_CLEAR: |
2939 | break; | |
2940 | ||
91820da6 JB |
2941 | case OVS_ACTION_ATTR_PUSH_ETH: |
2942 | /* Disallow pushing an Ethernet header if one | |
2943 | * is already present */ | |
2944 | if (mac_proto != MAC_PROTO_NONE) | |
2945 | return -EINVAL; | |
2946 | mac_proto = MAC_PROTO_NONE; | |
2947 | break; | |
2948 | ||
2949 | case OVS_ACTION_ATTR_POP_ETH: | |
2950 | if (mac_proto != MAC_PROTO_ETHERNET) | |
2951 | return -EINVAL; | |
2952 | if (vlan_tci & htons(VLAN_TAG_PRESENT)) | |
2953 | return -EINVAL; | |
2954 | mac_proto = MAC_PROTO_ETHERNET; | |
2955 | break; | |
2956 | ||
b2d0f5d5 YY |
2957 | case OVS_ACTION_ATTR_PUSH_NSH: |
2958 | if (mac_proto != MAC_PROTO_ETHERNET) { | |
2959 | u8 next_proto; | |
2960 | ||
2961 | next_proto = tun_p_from_eth_p(eth_type); | |
2962 | if (!next_proto) | |
2963 | return -EINVAL; | |
2964 | } | |
2965 | mac_proto = MAC_PROTO_NONE; | |
2966 | if (!validate_nsh(nla_data(a), false, true, true)) | |
2967 | return -EINVAL; | |
2968 | break; | |
2969 | ||
2970 | case OVS_ACTION_ATTR_POP_NSH: { | |
2971 | __be16 inner_proto; | |
2972 | ||
2973 | if (eth_type != htons(ETH_P_NSH)) | |
2974 | return -EINVAL; | |
2975 | inner_proto = tun_p_to_eth_p(key->nsh.base.np); | |
2976 | if (!inner_proto) | |
2977 | return -EINVAL; | |
2978 | if (key->nsh.base.np == TUN_P_ETHERNET) | |
2979 | mac_proto = MAC_PROTO_ETHERNET; | |
2980 | else | |
2981 | mac_proto = MAC_PROTO_NONE; | |
2982 | break; | |
2983 | } | |
2984 | ||
cd8a6c33 AZ |
2985 | case OVS_ACTION_ATTR_METER: |
2986 | /* Non-existent meters are simply ignored. */ | |
2987 | break; | |
2988 | ||
e6445719 | 2989 | default: |
05da5898 | 2990 | OVS_NLERR(log, "Unknown Action type %d", type); |
e6445719 PS |
2991 | return -EINVAL; |
2992 | } | |
2993 | if (!skip_copy) { | |
05da5898 | 2994 | err = copy_action(a, sfa, log); |
e6445719 PS |
2995 | if (err) |
2996 | return err; | |
2997 | } | |
2998 | } | |
2999 | ||
3000 | if (rem > 0) | |
3001 | return -EINVAL; | |
3002 | ||
3003 | return 0; | |
3004 | } | |
3005 | ||
83d2b9ba | 3006 | /* 'key' must be the masked key. */ |
7f8a436e | 3007 | int ovs_nla_copy_actions(struct net *net, const struct nlattr *attr, |
25cd9ba0 | 3008 | const struct sw_flow_key *key, |
05da5898 | 3009 | struct sw_flow_actions **sfa, bool log) |
25cd9ba0 | 3010 | { |
2fdb957d PS |
3011 | int err; |
3012 | ||
67c8d22a | 3013 | *sfa = nla_alloc_flow_actions(min(nla_len(attr), MAX_ACTIONS_BUFSIZE)); |
2fdb957d PS |
3014 | if (IS_ERR(*sfa)) |
3015 | return PTR_ERR(*sfa); | |
3016 | ||
8e2fed1c | 3017 | (*sfa)->orig_len = nla_len(attr); |
798c1661 | 3018 | err = __ovs_nla_copy_actions(net, attr, key, sfa, key->eth.type, |
018c1dda | 3019 | key->eth.vlan.tci, log); |
2fdb957d | 3020 | if (err) |
34ae932a | 3021 | ovs_nla_free_flow_actions(*sfa); |
2fdb957d PS |
3022 | |
3023 | return err; | |
25cd9ba0 SH |
3024 | } |
3025 | ||
798c1661 | 3026 | static int sample_action_to_attr(const struct nlattr *attr, |
3027 | struct sk_buff *skb) | |
e6445719 | 3028 | { |
798c1661 | 3029 | struct nlattr *start, *ac_start = NULL, *sample_arg; |
3030 | int err = 0, rem = nla_len(attr); | |
3031 | const struct sample_arg *arg; | |
3032 | struct nlattr *actions; | |
e6445719 PS |
3033 | |
3034 | start = nla_nest_start(skb, OVS_ACTION_ATTR_SAMPLE); | |
3035 | if (!start) | |
3036 | return -EMSGSIZE; | |
3037 | ||
798c1661 | 3038 | sample_arg = nla_data(attr); |
3039 | arg = nla_data(sample_arg); | |
3040 | actions = nla_next(sample_arg, &rem); | |
e6445719 | 3041 | |
798c1661 | 3042 | if (nla_put_u32(skb, OVS_SAMPLE_ATTR_PROBABILITY, arg->probability)) { |
3043 | err = -EMSGSIZE; | |
3044 | goto out; | |
3045 | } | |
3046 | ||
3047 | ac_start = nla_nest_start(skb, OVS_SAMPLE_ATTR_ACTIONS); | |
3048 | if (!ac_start) { | |
3049 | err = -EMSGSIZE; | |
3050 | goto out; | |
3051 | } | |
3052 | ||
3053 | err = ovs_nla_put_actions(actions, rem, skb); | |
3054 | ||
3055 | out: | |
3056 | if (err) { | |
3057 | nla_nest_cancel(skb, ac_start); | |
3058 | nla_nest_cancel(skb, start); | |
3059 | } else { | |
3060 | nla_nest_end(skb, ac_start); | |
3061 | nla_nest_end(skb, start); | |
e6445719 PS |
3062 | } |
3063 | ||
e6445719 PS |
3064 | return err; |
3065 | } | |
3066 | ||
3067 | static int set_action_to_attr(const struct nlattr *a, struct sk_buff *skb) | |
3068 | { | |
3069 | const struct nlattr *ovs_key = nla_data(a); | |
3070 | int key_type = nla_type(ovs_key); | |
3071 | struct nlattr *start; | |
3072 | int err; | |
3073 | ||
3074 | switch (key_type) { | |
f0b128c1 | 3075 | case OVS_KEY_ATTR_TUNNEL_INFO: { |
34ae932a TG |
3076 | struct ovs_tunnel_info *ovs_tun = nla_data(ovs_key); |
3077 | struct ip_tunnel_info *tun_info = &ovs_tun->tun_dst->u.tun_info; | |
f0b128c1 | 3078 | |
e6445719 PS |
3079 | start = nla_nest_start(skb, OVS_ACTION_ATTR_SET); |
3080 | if (!start) | |
3081 | return -EMSGSIZE; | |
3082 | ||
e905eabc SH |
3083 | err = ip_tun_to_nlattr(skb, &tun_info->key, |
3084 | ip_tunnel_info_opts(tun_info), | |
3085 | tun_info->options_len, | |
3086 | ip_tunnel_info_af(tun_info)); | |
e6445719 PS |
3087 | if (err) |
3088 | return err; | |
3089 | nla_nest_end(skb, start); | |
3090 | break; | |
f0b128c1 | 3091 | } |
e6445719 PS |
3092 | default: |
3093 | if (nla_put(skb, OVS_ACTION_ATTR_SET, nla_len(a), ovs_key)) | |
3094 | return -EMSGSIZE; | |
3095 | break; | |
3096 | } | |
3097 | ||
3098 | return 0; | |
3099 | } | |
3100 | ||
83d2b9ba JR |
3101 | static int masked_set_action_to_set_action_attr(const struct nlattr *a, |
3102 | struct sk_buff *skb) | |
3103 | { | |
3104 | const struct nlattr *ovs_key = nla_data(a); | |
f4f8e738 | 3105 | struct nlattr *nla; |
83d2b9ba JR |
3106 | size_t key_len = nla_len(ovs_key) / 2; |
3107 | ||
3108 | /* Revert the conversion we did from a non-masked set action to | |
3109 | * masked set action. | |
3110 | */ | |
f4f8e738 JS |
3111 | nla = nla_nest_start(skb, OVS_ACTION_ATTR_SET); |
3112 | if (!nla) | |
83d2b9ba JR |
3113 | return -EMSGSIZE; |
3114 | ||
f4f8e738 JS |
3115 | if (nla_put(skb, nla_type(ovs_key), key_len, nla_data(ovs_key))) |
3116 | return -EMSGSIZE; | |
3117 | ||
3118 | nla_nest_end(skb, nla); | |
83d2b9ba JR |
3119 | return 0; |
3120 | } | |
3121 | ||
e6445719 PS |
3122 | int ovs_nla_put_actions(const struct nlattr *attr, int len, struct sk_buff *skb) |
3123 | { | |
3124 | const struct nlattr *a; | |
3125 | int rem, err; | |
3126 | ||
3127 | nla_for_each_attr(a, attr, len, rem) { | |
3128 | int type = nla_type(a); | |
3129 | ||
3130 | switch (type) { | |
3131 | case OVS_ACTION_ATTR_SET: | |
3132 | err = set_action_to_attr(a, skb); | |
3133 | if (err) | |
3134 | return err; | |
3135 | break; | |
3136 | ||
83d2b9ba JR |
3137 | case OVS_ACTION_ATTR_SET_TO_MASKED: |
3138 | err = masked_set_action_to_set_action_attr(a, skb); | |
3139 | if (err) | |
3140 | return err; | |
3141 | break; | |
3142 | ||
e6445719 PS |
3143 | case OVS_ACTION_ATTR_SAMPLE: |
3144 | err = sample_action_to_attr(a, skb); | |
3145 | if (err) | |
3146 | return err; | |
3147 | break; | |
7f8a436e JS |
3148 | |
3149 | case OVS_ACTION_ATTR_CT: | |
3150 | err = ovs_ct_action_to_attr(nla_data(a), skb); | |
3151 | if (err) | |
3152 | return err; | |
3153 | break; | |
3154 | ||
e6445719 PS |
3155 | default: |
3156 | if (nla_put(skb, type, nla_len(a), nla_data(a))) | |
3157 | return -EMSGSIZE; | |
3158 | break; | |
3159 | } | |
3160 | } | |
3161 | ||
3162 | return 0; | |
3163 | } |