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c9422999 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
e6445719 | 2 | /* |
798c1661 | 3 | * Copyright (c) 2007-2017 Nicira, Inc. |
e6445719 PS |
4 | */ |
5 | ||
2235ad1c JP |
6 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
7 | ||
e6445719 PS |
8 | #include "flow.h" |
9 | #include "datapath.h" | |
10 | #include <linux/uaccess.h> | |
11 | #include <linux/netdevice.h> | |
12 | #include <linux/etherdevice.h> | |
13 | #include <linux/if_ether.h> | |
14 | #include <linux/if_vlan.h> | |
15 | #include <net/llc_pdu.h> | |
16 | #include <linux/kernel.h> | |
17 | #include <linux/jhash.h> | |
18 | #include <linux/jiffies.h> | |
19 | #include <linux/llc.h> | |
20 | #include <linux/module.h> | |
21 | #include <linux/in.h> | |
22 | #include <linux/rcupdate.h> | |
23 | #include <linux/if_arp.h> | |
24 | #include <linux/ip.h> | |
25 | #include <linux/ipv6.h> | |
26 | #include <linux/sctp.h> | |
27 | #include <linux/tcp.h> | |
28 | #include <linux/udp.h> | |
29 | #include <linux/icmp.h> | |
30 | #include <linux/icmpv6.h> | |
31 | #include <linux/rculist.h> | |
f5796684 | 32 | #include <net/geneve.h> |
e6445719 PS |
33 | #include <net/ip.h> |
34 | #include <net/ipv6.h> | |
35 | #include <net/ndisc.h> | |
25cd9ba0 | 36 | #include <net/mpls.h> |
614732ea | 37 | #include <net/vxlan.h> |
b2d0f5d5 | 38 | #include <net/tun_proto.h> |
fc1372f8 | 39 | #include <net/erspan.h> |
e6445719 PS |
40 | |
41 | #include "flow_netlink.h" | |
42 | ||
81bfe3c3 TG |
43 | struct ovs_len_tbl { |
44 | int len; | |
45 | const struct ovs_len_tbl *next; | |
46 | }; | |
47 | ||
48 | #define OVS_ATTR_NESTED -1 | |
982b5270 | 49 | #define OVS_ATTR_VARIABLE -2 |
81bfe3c3 | 50 | |
798c1661 | 51 | static bool actions_may_change_flow(const struct nlattr *actions) |
52 | { | |
53 | struct nlattr *nla; | |
54 | int rem; | |
55 | ||
56 | nla_for_each_nested(nla, actions, rem) { | |
57 | u16 action = nla_type(nla); | |
58 | ||
59 | switch (action) { | |
60 | case OVS_ACTION_ATTR_OUTPUT: | |
61 | case OVS_ACTION_ATTR_RECIRC: | |
62 | case OVS_ACTION_ATTR_TRUNC: | |
63 | case OVS_ACTION_ATTR_USERSPACE: | |
64 | break; | |
65 | ||
66 | case OVS_ACTION_ATTR_CT: | |
b8226962 | 67 | case OVS_ACTION_ATTR_CT_CLEAR: |
798c1661 | 68 | case OVS_ACTION_ATTR_HASH: |
69 | case OVS_ACTION_ATTR_POP_ETH: | |
70 | case OVS_ACTION_ATTR_POP_MPLS: | |
b2d0f5d5 | 71 | case OVS_ACTION_ATTR_POP_NSH: |
798c1661 | 72 | case OVS_ACTION_ATTR_POP_VLAN: |
73 | case OVS_ACTION_ATTR_PUSH_ETH: | |
74 | case OVS_ACTION_ATTR_PUSH_MPLS: | |
b2d0f5d5 | 75 | case OVS_ACTION_ATTR_PUSH_NSH: |
798c1661 | 76 | case OVS_ACTION_ATTR_PUSH_VLAN: |
77 | case OVS_ACTION_ATTR_SAMPLE: | |
78 | case OVS_ACTION_ATTR_SET: | |
79 | case OVS_ACTION_ATTR_SET_MASKED: | |
cd8a6c33 | 80 | case OVS_ACTION_ATTR_METER: |
4d5ec89f | 81 | case OVS_ACTION_ATTR_CHECK_PKT_LEN: |
798c1661 | 82 | default: |
83 | return true; | |
84 | } | |
85 | } | |
86 | return false; | |
87 | } | |
88 | ||
a85311bf PS |
89 | static void update_range(struct sw_flow_match *match, |
90 | size_t offset, size_t size, bool is_mask) | |
e6445719 | 91 | { |
a85311bf | 92 | struct sw_flow_key_range *range; |
e6445719 PS |
93 | size_t start = rounddown(offset, sizeof(long)); |
94 | size_t end = roundup(offset + size, sizeof(long)); | |
95 | ||
96 | if (!is_mask) | |
97 | range = &match->range; | |
a85311bf | 98 | else |
e6445719 PS |
99 | range = &match->mask->range; |
100 | ||
e6445719 PS |
101 | if (range->start == range->end) { |
102 | range->start = start; | |
103 | range->end = end; | |
104 | return; | |
105 | } | |
106 | ||
107 | if (range->start > start) | |
108 | range->start = start; | |
109 | ||
110 | if (range->end < end) | |
111 | range->end = end; | |
112 | } | |
113 | ||
114 | #define SW_FLOW_KEY_PUT(match, field, value, is_mask) \ | |
115 | do { \ | |
a85311bf PS |
116 | update_range(match, offsetof(struct sw_flow_key, field), \ |
117 | sizeof((match)->key->field), is_mask); \ | |
118 | if (is_mask) \ | |
119 | (match)->mask->key.field = value; \ | |
120 | else \ | |
e6445719 | 121 | (match)->key->field = value; \ |
e6445719 PS |
122 | } while (0) |
123 | ||
f5796684 JG |
124 | #define SW_FLOW_KEY_MEMCPY_OFFSET(match, offset, value_p, len, is_mask) \ |
125 | do { \ | |
a85311bf | 126 | update_range(match, offset, len, is_mask); \ |
f5796684 JG |
127 | if (is_mask) \ |
128 | memcpy((u8 *)&(match)->mask->key + offset, value_p, \ | |
a85311bf | 129 | len); \ |
f5796684 JG |
130 | else \ |
131 | memcpy((u8 *)(match)->key + offset, value_p, len); \ | |
e6445719 PS |
132 | } while (0) |
133 | ||
f5796684 JG |
134 | #define SW_FLOW_KEY_MEMCPY(match, field, value_p, len, is_mask) \ |
135 | SW_FLOW_KEY_MEMCPY_OFFSET(match, offsetof(struct sw_flow_key, field), \ | |
136 | value_p, len, is_mask) | |
137 | ||
a85311bf PS |
138 | #define SW_FLOW_KEY_MEMSET_FIELD(match, field, value, is_mask) \ |
139 | do { \ | |
140 | update_range(match, offsetof(struct sw_flow_key, field), \ | |
141 | sizeof((match)->key->field), is_mask); \ | |
142 | if (is_mask) \ | |
143 | memset((u8 *)&(match)->mask->key.field, value, \ | |
144 | sizeof((match)->mask->key.field)); \ | |
145 | else \ | |
f47de068 PS |
146 | memset((u8 *)&(match)->key->field, value, \ |
147 | sizeof((match)->key->field)); \ | |
f47de068 | 148 | } while (0) |
e6445719 PS |
149 | |
150 | static bool match_validate(const struct sw_flow_match *match, | |
05da5898 | 151 | u64 key_attrs, u64 mask_attrs, bool log) |
e6445719 | 152 | { |
0a6410fb | 153 | u64 key_expected = 0; |
e6445719 PS |
154 | u64 mask_allowed = key_attrs; /* At most allow all key attributes */ |
155 | ||
156 | /* The following mask attributes allowed only if they | |
157 | * pass the validation tests. */ | |
158 | mask_allowed &= ~((1 << OVS_KEY_ATTR_IPV4) | |
9dd7f890 | 159 | | (1 << OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV4) |
e6445719 | 160 | | (1 << OVS_KEY_ATTR_IPV6) |
9dd7f890 | 161 | | (1 << OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV6) |
e6445719 | 162 | | (1 << OVS_KEY_ATTR_TCP) |
5eb26b15 | 163 | | (1 << OVS_KEY_ATTR_TCP_FLAGS) |
e6445719 PS |
164 | | (1 << OVS_KEY_ATTR_UDP) |
165 | | (1 << OVS_KEY_ATTR_SCTP) | |
166 | | (1 << OVS_KEY_ATTR_ICMP) | |
167 | | (1 << OVS_KEY_ATTR_ICMPV6) | |
168 | | (1 << OVS_KEY_ATTR_ARP) | |
25cd9ba0 | 169 | | (1 << OVS_KEY_ATTR_ND) |
b2d0f5d5 YY |
170 | | (1 << OVS_KEY_ATTR_MPLS) |
171 | | (1 << OVS_KEY_ATTR_NSH)); | |
e6445719 PS |
172 | |
173 | /* Always allowed mask fields. */ | |
174 | mask_allowed |= ((1 << OVS_KEY_ATTR_TUNNEL) | |
175 | | (1 << OVS_KEY_ATTR_IN_PORT) | |
176 | | (1 << OVS_KEY_ATTR_ETHERTYPE)); | |
177 | ||
178 | /* Check key attributes. */ | |
179 | if (match->key->eth.type == htons(ETH_P_ARP) | |
180 | || match->key->eth.type == htons(ETH_P_RARP)) { | |
181 | key_expected |= 1 << OVS_KEY_ATTR_ARP; | |
f2a01517 | 182 | if (match->mask && (match->mask->key.eth.type == htons(0xffff))) |
e6445719 PS |
183 | mask_allowed |= 1 << OVS_KEY_ATTR_ARP; |
184 | } | |
185 | ||
25cd9ba0 SH |
186 | if (eth_p_mpls(match->key->eth.type)) { |
187 | key_expected |= 1 << OVS_KEY_ATTR_MPLS; | |
188 | if (match->mask && (match->mask->key.eth.type == htons(0xffff))) | |
189 | mask_allowed |= 1 << OVS_KEY_ATTR_MPLS; | |
190 | } | |
191 | ||
e6445719 PS |
192 | if (match->key->eth.type == htons(ETH_P_IP)) { |
193 | key_expected |= 1 << OVS_KEY_ATTR_IPV4; | |
9dd7f890 | 194 | if (match->mask && match->mask->key.eth.type == htons(0xffff)) { |
e6445719 | 195 | mask_allowed |= 1 << OVS_KEY_ATTR_IPV4; |
9dd7f890 JR |
196 | mask_allowed |= 1 << OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV4; |
197 | } | |
e6445719 PS |
198 | |
199 | if (match->key->ip.frag != OVS_FRAG_TYPE_LATER) { | |
200 | if (match->key->ip.proto == IPPROTO_UDP) { | |
201 | key_expected |= 1 << OVS_KEY_ATTR_UDP; | |
202 | if (match->mask && (match->mask->key.ip.proto == 0xff)) | |
203 | mask_allowed |= 1 << OVS_KEY_ATTR_UDP; | |
204 | } | |
205 | ||
206 | if (match->key->ip.proto == IPPROTO_SCTP) { | |
207 | key_expected |= 1 << OVS_KEY_ATTR_SCTP; | |
208 | if (match->mask && (match->mask->key.ip.proto == 0xff)) | |
209 | mask_allowed |= 1 << OVS_KEY_ATTR_SCTP; | |
210 | } | |
211 | ||
212 | if (match->key->ip.proto == IPPROTO_TCP) { | |
213 | key_expected |= 1 << OVS_KEY_ATTR_TCP; | |
5eb26b15 JR |
214 | key_expected |= 1 << OVS_KEY_ATTR_TCP_FLAGS; |
215 | if (match->mask && (match->mask->key.ip.proto == 0xff)) { | |
e6445719 | 216 | mask_allowed |= 1 << OVS_KEY_ATTR_TCP; |
5eb26b15 JR |
217 | mask_allowed |= 1 << OVS_KEY_ATTR_TCP_FLAGS; |
218 | } | |
e6445719 PS |
219 | } |
220 | ||
221 | if (match->key->ip.proto == IPPROTO_ICMP) { | |
222 | key_expected |= 1 << OVS_KEY_ATTR_ICMP; | |
223 | if (match->mask && (match->mask->key.ip.proto == 0xff)) | |
224 | mask_allowed |= 1 << OVS_KEY_ATTR_ICMP; | |
225 | } | |
226 | } | |
227 | } | |
228 | ||
229 | if (match->key->eth.type == htons(ETH_P_IPV6)) { | |
230 | key_expected |= 1 << OVS_KEY_ATTR_IPV6; | |
9dd7f890 | 231 | if (match->mask && match->mask->key.eth.type == htons(0xffff)) { |
e6445719 | 232 | mask_allowed |= 1 << OVS_KEY_ATTR_IPV6; |
9dd7f890 JR |
233 | mask_allowed |= 1 << OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV6; |
234 | } | |
e6445719 PS |
235 | |
236 | if (match->key->ip.frag != OVS_FRAG_TYPE_LATER) { | |
237 | if (match->key->ip.proto == IPPROTO_UDP) { | |
238 | key_expected |= 1 << OVS_KEY_ATTR_UDP; | |
239 | if (match->mask && (match->mask->key.ip.proto == 0xff)) | |
240 | mask_allowed |= 1 << OVS_KEY_ATTR_UDP; | |
241 | } | |
242 | ||
243 | if (match->key->ip.proto == IPPROTO_SCTP) { | |
244 | key_expected |= 1 << OVS_KEY_ATTR_SCTP; | |
245 | if (match->mask && (match->mask->key.ip.proto == 0xff)) | |
246 | mask_allowed |= 1 << OVS_KEY_ATTR_SCTP; | |
247 | } | |
248 | ||
249 | if (match->key->ip.proto == IPPROTO_TCP) { | |
250 | key_expected |= 1 << OVS_KEY_ATTR_TCP; | |
5eb26b15 JR |
251 | key_expected |= 1 << OVS_KEY_ATTR_TCP_FLAGS; |
252 | if (match->mask && (match->mask->key.ip.proto == 0xff)) { | |
e6445719 | 253 | mask_allowed |= 1 << OVS_KEY_ATTR_TCP; |
5eb26b15 JR |
254 | mask_allowed |= 1 << OVS_KEY_ATTR_TCP_FLAGS; |
255 | } | |
e6445719 PS |
256 | } |
257 | ||
258 | if (match->key->ip.proto == IPPROTO_ICMPV6) { | |
259 | key_expected |= 1 << OVS_KEY_ATTR_ICMPV6; | |
260 | if (match->mask && (match->mask->key.ip.proto == 0xff)) | |
261 | mask_allowed |= 1 << OVS_KEY_ATTR_ICMPV6; | |
262 | ||
1139e241 | 263 | if (match->key->tp.src == |
e6445719 | 264 | htons(NDISC_NEIGHBOUR_SOLICITATION) || |
1139e241 | 265 | match->key->tp.src == htons(NDISC_NEIGHBOUR_ADVERTISEMENT)) { |
e6445719 | 266 | key_expected |= 1 << OVS_KEY_ATTR_ND; |
9dd7f890 JR |
267 | /* Original direction conntrack tuple |
268 | * uses the same space as the ND fields | |
269 | * in the key, so both are not allowed | |
270 | * at the same time. | |
271 | */ | |
272 | mask_allowed &= ~(1ULL << OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV6); | |
f2a01517 | 273 | if (match->mask && (match->mask->key.tp.src == htons(0xff))) |
e6445719 PS |
274 | mask_allowed |= 1 << OVS_KEY_ATTR_ND; |
275 | } | |
276 | } | |
277 | } | |
278 | } | |
279 | ||
b2d0f5d5 YY |
280 | if (match->key->eth.type == htons(ETH_P_NSH)) { |
281 | key_expected |= 1 << OVS_KEY_ATTR_NSH; | |
282 | if (match->mask && | |
283 | match->mask->key.eth.type == htons(0xffff)) { | |
284 | mask_allowed |= 1 << OVS_KEY_ATTR_NSH; | |
285 | } | |
286 | } | |
287 | ||
e6445719 PS |
288 | if ((key_attrs & key_expected) != key_expected) { |
289 | /* Key attributes check failed. */ | |
05da5898 JR |
290 | OVS_NLERR(log, "Missing key (keys=%llx, expected=%llx)", |
291 | (unsigned long long)key_attrs, | |
292 | (unsigned long long)key_expected); | |
e6445719 PS |
293 | return false; |
294 | } | |
295 | ||
296 | if ((mask_attrs & mask_allowed) != mask_attrs) { | |
297 | /* Mask attributes check failed. */ | |
05da5898 JR |
298 | OVS_NLERR(log, "Unexpected mask (mask=%llx, allowed=%llx)", |
299 | (unsigned long long)mask_attrs, | |
300 | (unsigned long long)mask_allowed); | |
e6445719 PS |
301 | return false; |
302 | } | |
303 | ||
304 | return true; | |
305 | } | |
306 | ||
8f0aad6f WZ |
307 | size_t ovs_tun_key_attr_size(void) |
308 | { | |
309 | /* Whenever adding new OVS_TUNNEL_KEY_ FIELDS, we should consider | |
310 | * updating this function. | |
311 | */ | |
b46f6ded | 312 | return nla_total_size_64bit(8) /* OVS_TUNNEL_KEY_ATTR_ID */ |
6b26ba3a JB |
313 | + nla_total_size(16) /* OVS_TUNNEL_KEY_ATTR_IPV[46]_SRC */ |
314 | + nla_total_size(16) /* OVS_TUNNEL_KEY_ATTR_IPV[46]_DST */ | |
8f0aad6f WZ |
315 | + nla_total_size(1) /* OVS_TUNNEL_KEY_ATTR_TOS */ |
316 | + nla_total_size(1) /* OVS_TUNNEL_KEY_ATTR_TTL */ | |
317 | + nla_total_size(0) /* OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT */ | |
318 | + nla_total_size(0) /* OVS_TUNNEL_KEY_ATTR_CSUM */ | |
319 | + nla_total_size(0) /* OVS_TUNNEL_KEY_ATTR_OAM */ | |
320 | + nla_total_size(256) /* OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS */ | |
fc1372f8 WT |
321 | /* OVS_TUNNEL_KEY_ATTR_VXLAN_OPTS and |
322 | * OVS_TUNNEL_KEY_ATTR_ERSPAN_OPTS is mutually exclusive with | |
1dd144cf TG |
323 | * OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS and covered by it. |
324 | */ | |
8f0aad6f | 325 | + nla_total_size(2) /* OVS_TUNNEL_KEY_ATTR_TP_SRC */ |
95a33208 | 326 | + nla_total_size(2); /* OVS_TUNNEL_KEY_ATTR_TP_DST */ |
8f0aad6f WZ |
327 | } |
328 | ||
06c2351f | 329 | static size_t ovs_nsh_key_attr_size(void) |
b2d0f5d5 YY |
330 | { |
331 | /* Whenever adding new OVS_NSH_KEY_ FIELDS, we should consider | |
332 | * updating this function. | |
333 | */ | |
334 | return nla_total_size(NSH_BASE_HDR_LEN) /* OVS_NSH_KEY_ATTR_BASE */ | |
335 | /* OVS_NSH_KEY_ATTR_MD1 and OVS_NSH_KEY_ATTR_MD2 are | |
336 | * mutually exclusive, so the bigger one can cover | |
337 | * the small one. | |
338 | */ | |
339 | + nla_total_size(NSH_CTX_HDRS_MAX_LEN); | |
340 | } | |
341 | ||
41af73e9 JS |
342 | size_t ovs_key_attr_size(void) |
343 | { | |
344 | /* Whenever adding new OVS_KEY_ FIELDS, we should consider | |
345 | * updating this function. | |
346 | */ | |
b2d0f5d5 | 347 | BUILD_BUG_ON(OVS_KEY_ATTR_TUNNEL_INFO != 29); |
41af73e9 JS |
348 | |
349 | return nla_total_size(4) /* OVS_KEY_ATTR_PRIORITY */ | |
350 | + nla_total_size(0) /* OVS_KEY_ATTR_TUNNEL */ | |
8f0aad6f | 351 | + ovs_tun_key_attr_size() |
41af73e9 JS |
352 | + nla_total_size(4) /* OVS_KEY_ATTR_IN_PORT */ |
353 | + nla_total_size(4) /* OVS_KEY_ATTR_SKB_MARK */ | |
354 | + nla_total_size(4) /* OVS_KEY_ATTR_DP_HASH */ | |
355 | + nla_total_size(4) /* OVS_KEY_ATTR_RECIRC_ID */ | |
fbccce59 | 356 | + nla_total_size(4) /* OVS_KEY_ATTR_CT_STATE */ |
7f8a436e | 357 | + nla_total_size(2) /* OVS_KEY_ATTR_CT_ZONE */ |
182e3042 | 358 | + nla_total_size(4) /* OVS_KEY_ATTR_CT_MARK */ |
33db4125 | 359 | + nla_total_size(16) /* OVS_KEY_ATTR_CT_LABELS */ |
9dd7f890 | 360 | + nla_total_size(40) /* OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV6 */ |
b2d0f5d5 YY |
361 | + nla_total_size(0) /* OVS_KEY_ATTR_NSH */ |
362 | + ovs_nsh_key_attr_size() | |
41af73e9 JS |
363 | + nla_total_size(12) /* OVS_KEY_ATTR_ETHERNET */ |
364 | + nla_total_size(2) /* OVS_KEY_ATTR_ETHERTYPE */ | |
365 | + nla_total_size(4) /* OVS_KEY_ATTR_VLAN */ | |
366 | + nla_total_size(0) /* OVS_KEY_ATTR_ENCAP */ | |
367 | + nla_total_size(2) /* OVS_KEY_ATTR_ETHERTYPE */ | |
368 | + nla_total_size(40) /* OVS_KEY_ATTR_IPV6 */ | |
369 | + nla_total_size(2) /* OVS_KEY_ATTR_ICMPV6 */ | |
370 | + nla_total_size(28); /* OVS_KEY_ATTR_ND */ | |
371 | } | |
372 | ||
982b5270 JG |
373 | static const struct ovs_len_tbl ovs_vxlan_ext_key_lens[OVS_VXLAN_EXT_MAX + 1] = { |
374 | [OVS_VXLAN_EXT_GBP] = { .len = sizeof(u32) }, | |
375 | }; | |
376 | ||
81bfe3c3 TG |
377 | static const struct ovs_len_tbl ovs_tunnel_key_lens[OVS_TUNNEL_KEY_ATTR_MAX + 1] = { |
378 | [OVS_TUNNEL_KEY_ATTR_ID] = { .len = sizeof(u64) }, | |
379 | [OVS_TUNNEL_KEY_ATTR_IPV4_SRC] = { .len = sizeof(u32) }, | |
380 | [OVS_TUNNEL_KEY_ATTR_IPV4_DST] = { .len = sizeof(u32) }, | |
381 | [OVS_TUNNEL_KEY_ATTR_TOS] = { .len = 1 }, | |
382 | [OVS_TUNNEL_KEY_ATTR_TTL] = { .len = 1 }, | |
383 | [OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT] = { .len = 0 }, | |
384 | [OVS_TUNNEL_KEY_ATTR_CSUM] = { .len = 0 }, | |
385 | [OVS_TUNNEL_KEY_ATTR_TP_SRC] = { .len = sizeof(u16) }, | |
386 | [OVS_TUNNEL_KEY_ATTR_TP_DST] = { .len = sizeof(u16) }, | |
387 | [OVS_TUNNEL_KEY_ATTR_OAM] = { .len = 0 }, | |
982b5270 JG |
388 | [OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS] = { .len = OVS_ATTR_VARIABLE }, |
389 | [OVS_TUNNEL_KEY_ATTR_VXLAN_OPTS] = { .len = OVS_ATTR_NESTED, | |
390 | .next = ovs_vxlan_ext_key_lens }, | |
6b26ba3a JB |
391 | [OVS_TUNNEL_KEY_ATTR_IPV6_SRC] = { .len = sizeof(struct in6_addr) }, |
392 | [OVS_TUNNEL_KEY_ATTR_IPV6_DST] = { .len = sizeof(struct in6_addr) }, | |
fc1372f8 | 393 | [OVS_TUNNEL_KEY_ATTR_ERSPAN_OPTS] = { .len = OVS_ATTR_VARIABLE }, |
18b6f717 | 394 | [OVS_TUNNEL_KEY_ATTR_IPV4_INFO_BRIDGE] = { .len = 0 }, |
81bfe3c3 TG |
395 | }; |
396 | ||
b2d0f5d5 YY |
397 | static const struct ovs_len_tbl |
398 | ovs_nsh_key_attr_lens[OVS_NSH_KEY_ATTR_MAX + 1] = { | |
399 | [OVS_NSH_KEY_ATTR_BASE] = { .len = sizeof(struct ovs_nsh_key_base) }, | |
400 | [OVS_NSH_KEY_ATTR_MD1] = { .len = sizeof(struct ovs_nsh_key_md1) }, | |
401 | [OVS_NSH_KEY_ATTR_MD2] = { .len = OVS_ATTR_VARIABLE }, | |
402 | }; | |
403 | ||
e6445719 | 404 | /* The size of the argument for each %OVS_KEY_ATTR_* Netlink attribute. */ |
81bfe3c3 TG |
405 | static const struct ovs_len_tbl ovs_key_lens[OVS_KEY_ATTR_MAX + 1] = { |
406 | [OVS_KEY_ATTR_ENCAP] = { .len = OVS_ATTR_NESTED }, | |
407 | [OVS_KEY_ATTR_PRIORITY] = { .len = sizeof(u32) }, | |
408 | [OVS_KEY_ATTR_IN_PORT] = { .len = sizeof(u32) }, | |
409 | [OVS_KEY_ATTR_SKB_MARK] = { .len = sizeof(u32) }, | |
410 | [OVS_KEY_ATTR_ETHERNET] = { .len = sizeof(struct ovs_key_ethernet) }, | |
411 | [OVS_KEY_ATTR_VLAN] = { .len = sizeof(__be16) }, | |
412 | [OVS_KEY_ATTR_ETHERTYPE] = { .len = sizeof(__be16) }, | |
413 | [OVS_KEY_ATTR_IPV4] = { .len = sizeof(struct ovs_key_ipv4) }, | |
414 | [OVS_KEY_ATTR_IPV6] = { .len = sizeof(struct ovs_key_ipv6) }, | |
415 | [OVS_KEY_ATTR_TCP] = { .len = sizeof(struct ovs_key_tcp) }, | |
416 | [OVS_KEY_ATTR_TCP_FLAGS] = { .len = sizeof(__be16) }, | |
417 | [OVS_KEY_ATTR_UDP] = { .len = sizeof(struct ovs_key_udp) }, | |
418 | [OVS_KEY_ATTR_SCTP] = { .len = sizeof(struct ovs_key_sctp) }, | |
419 | [OVS_KEY_ATTR_ICMP] = { .len = sizeof(struct ovs_key_icmp) }, | |
420 | [OVS_KEY_ATTR_ICMPV6] = { .len = sizeof(struct ovs_key_icmpv6) }, | |
421 | [OVS_KEY_ATTR_ARP] = { .len = sizeof(struct ovs_key_arp) }, | |
422 | [OVS_KEY_ATTR_ND] = { .len = sizeof(struct ovs_key_nd) }, | |
423 | [OVS_KEY_ATTR_RECIRC_ID] = { .len = sizeof(u32) }, | |
424 | [OVS_KEY_ATTR_DP_HASH] = { .len = sizeof(u32) }, | |
425 | [OVS_KEY_ATTR_TUNNEL] = { .len = OVS_ATTR_NESTED, | |
426 | .next = ovs_tunnel_key_lens, }, | |
427 | [OVS_KEY_ATTR_MPLS] = { .len = sizeof(struct ovs_key_mpls) }, | |
fbccce59 | 428 | [OVS_KEY_ATTR_CT_STATE] = { .len = sizeof(u32) }, |
7f8a436e | 429 | [OVS_KEY_ATTR_CT_ZONE] = { .len = sizeof(u16) }, |
182e3042 | 430 | [OVS_KEY_ATTR_CT_MARK] = { .len = sizeof(u32) }, |
33db4125 | 431 | [OVS_KEY_ATTR_CT_LABELS] = { .len = sizeof(struct ovs_key_ct_labels) }, |
9dd7f890 JR |
432 | [OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV4] = { |
433 | .len = sizeof(struct ovs_key_ct_tuple_ipv4) }, | |
434 | [OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV6] = { | |
435 | .len = sizeof(struct ovs_key_ct_tuple_ipv6) }, | |
b2d0f5d5 YY |
436 | [OVS_KEY_ATTR_NSH] = { .len = OVS_ATTR_NESTED, |
437 | .next = ovs_nsh_key_attr_lens, }, | |
e6445719 PS |
438 | }; |
439 | ||
982b5270 JG |
440 | static bool check_attr_len(unsigned int attr_len, unsigned int expected_len) |
441 | { | |
442 | return expected_len == attr_len || | |
443 | expected_len == OVS_ATTR_NESTED || | |
444 | expected_len == OVS_ATTR_VARIABLE; | |
445 | } | |
446 | ||
e6445719 PS |
447 | static bool is_all_zero(const u8 *fp, size_t size) |
448 | { | |
449 | int i; | |
450 | ||
451 | if (!fp) | |
452 | return false; | |
453 | ||
454 | for (i = 0; i < size; i++) | |
455 | if (fp[i]) | |
456 | return false; | |
457 | ||
458 | return true; | |
459 | } | |
460 | ||
461 | static int __parse_flow_nlattrs(const struct nlattr *attr, | |
462 | const struct nlattr *a[], | |
05da5898 | 463 | u64 *attrsp, bool log, bool nz) |
e6445719 PS |
464 | { |
465 | const struct nlattr *nla; | |
466 | u64 attrs; | |
467 | int rem; | |
468 | ||
469 | attrs = *attrsp; | |
470 | nla_for_each_nested(nla, attr, rem) { | |
471 | u16 type = nla_type(nla); | |
472 | int expected_len; | |
473 | ||
474 | if (type > OVS_KEY_ATTR_MAX) { | |
05da5898 | 475 | OVS_NLERR(log, "Key type %d is out of range max %d", |
e6445719 PS |
476 | type, OVS_KEY_ATTR_MAX); |
477 | return -EINVAL; | |
478 | } | |
479 | ||
480 | if (attrs & (1 << type)) { | |
05da5898 | 481 | OVS_NLERR(log, "Duplicate key (type %d).", type); |
e6445719 PS |
482 | return -EINVAL; |
483 | } | |
484 | ||
81bfe3c3 | 485 | expected_len = ovs_key_lens[type].len; |
982b5270 | 486 | if (!check_attr_len(nla_len(nla), expected_len)) { |
05da5898 JR |
487 | OVS_NLERR(log, "Key %d has unexpected len %d expected %d", |
488 | type, nla_len(nla), expected_len); | |
e6445719 PS |
489 | return -EINVAL; |
490 | } | |
491 | ||
04a4af33 | 492 | if (!nz || !is_all_zero(nla_data(nla), nla_len(nla))) { |
e6445719 PS |
493 | attrs |= 1 << type; |
494 | a[type] = nla; | |
495 | } | |
496 | } | |
497 | if (rem) { | |
05da5898 | 498 | OVS_NLERR(log, "Message has %d unknown bytes.", rem); |
e6445719 PS |
499 | return -EINVAL; |
500 | } | |
501 | ||
502 | *attrsp = attrs; | |
503 | return 0; | |
504 | } | |
505 | ||
506 | static int parse_flow_mask_nlattrs(const struct nlattr *attr, | |
05da5898 JR |
507 | const struct nlattr *a[], u64 *attrsp, |
508 | bool log) | |
e6445719 | 509 | { |
05da5898 | 510 | return __parse_flow_nlattrs(attr, a, attrsp, log, true); |
e6445719 PS |
511 | } |
512 | ||
9dd7f890 JR |
513 | int parse_flow_nlattrs(const struct nlattr *attr, const struct nlattr *a[], |
514 | u64 *attrsp, bool log) | |
e6445719 | 515 | { |
05da5898 JR |
516 | return __parse_flow_nlattrs(attr, a, attrsp, log, false); |
517 | } | |
518 | ||
519 | static int genev_tun_opt_from_nlattr(const struct nlattr *a, | |
520 | struct sw_flow_match *match, bool is_mask, | |
521 | bool log) | |
522 | { | |
523 | unsigned long opt_key_offset; | |
524 | ||
525 | if (nla_len(a) > sizeof(match->key->tun_opts)) { | |
526 | OVS_NLERR(log, "Geneve option length err (len %d, max %zu).", | |
527 | nla_len(a), sizeof(match->key->tun_opts)); | |
528 | return -EINVAL; | |
529 | } | |
530 | ||
531 | if (nla_len(a) % 4 != 0) { | |
532 | OVS_NLERR(log, "Geneve opt len %d is not a multiple of 4.", | |
533 | nla_len(a)); | |
534 | return -EINVAL; | |
535 | } | |
536 | ||
537 | /* We need to record the length of the options passed | |
538 | * down, otherwise packets with the same format but | |
539 | * additional options will be silently matched. | |
540 | */ | |
541 | if (!is_mask) { | |
542 | SW_FLOW_KEY_PUT(match, tun_opts_len, nla_len(a), | |
543 | false); | |
544 | } else { | |
545 | /* This is somewhat unusual because it looks at | |
546 | * both the key and mask while parsing the | |
547 | * attributes (and by extension assumes the key | |
548 | * is parsed first). Normally, we would verify | |
549 | * that each is the correct length and that the | |
550 | * attributes line up in the validate function. | |
551 | * However, that is difficult because this is | |
552 | * variable length and we won't have the | |
553 | * information later. | |
554 | */ | |
555 | if (match->key->tun_opts_len != nla_len(a)) { | |
556 | OVS_NLERR(log, "Geneve option len %d != mask len %d", | |
557 | match->key->tun_opts_len, nla_len(a)); | |
558 | return -EINVAL; | |
559 | } | |
560 | ||
561 | SW_FLOW_KEY_PUT(match, tun_opts_len, 0xff, true); | |
562 | } | |
563 | ||
d91641d9 | 564 | opt_key_offset = TUN_METADATA_OFFSET(nla_len(a)); |
05da5898 JR |
565 | SW_FLOW_KEY_MEMCPY_OFFSET(match, opt_key_offset, nla_data(a), |
566 | nla_len(a), is_mask); | |
567 | return 0; | |
e6445719 PS |
568 | } |
569 | ||
982b5270 | 570 | static int vxlan_tun_opt_from_nlattr(const struct nlattr *attr, |
1dd144cf TG |
571 | struct sw_flow_match *match, bool is_mask, |
572 | bool log) | |
573 | { | |
982b5270 JG |
574 | struct nlattr *a; |
575 | int rem; | |
1dd144cf | 576 | unsigned long opt_key_offset; |
614732ea | 577 | struct vxlan_metadata opts; |
1dd144cf TG |
578 | |
579 | BUILD_BUG_ON(sizeof(opts) > sizeof(match->key->tun_opts)); | |
580 | ||
1dd144cf | 581 | memset(&opts, 0, sizeof(opts)); |
982b5270 JG |
582 | nla_for_each_nested(a, attr, rem) { |
583 | int type = nla_type(a); | |
1dd144cf | 584 | |
982b5270 JG |
585 | if (type > OVS_VXLAN_EXT_MAX) { |
586 | OVS_NLERR(log, "VXLAN extension %d out of range max %d", | |
587 | type, OVS_VXLAN_EXT_MAX); | |
588 | return -EINVAL; | |
589 | } | |
590 | ||
591 | if (!check_attr_len(nla_len(a), | |
592 | ovs_vxlan_ext_key_lens[type].len)) { | |
593 | OVS_NLERR(log, "VXLAN extension %d has unexpected len %d expected %d", | |
594 | type, nla_len(a), | |
595 | ovs_vxlan_ext_key_lens[type].len); | |
596 | return -EINVAL; | |
597 | } | |
598 | ||
599 | switch (type) { | |
600 | case OVS_VXLAN_EXT_GBP: | |
601 | opts.gbp = nla_get_u32(a); | |
602 | break; | |
603 | default: | |
604 | OVS_NLERR(log, "Unknown VXLAN extension attribute %d", | |
605 | type); | |
606 | return -EINVAL; | |
607 | } | |
608 | } | |
609 | if (rem) { | |
610 | OVS_NLERR(log, "VXLAN extension message has %d unknown bytes.", | |
611 | rem); | |
612 | return -EINVAL; | |
613 | } | |
1dd144cf TG |
614 | |
615 | if (!is_mask) | |
616 | SW_FLOW_KEY_PUT(match, tun_opts_len, sizeof(opts), false); | |
617 | else | |
618 | SW_FLOW_KEY_PUT(match, tun_opts_len, 0xff, true); | |
619 | ||
620 | opt_key_offset = TUN_METADATA_OFFSET(sizeof(opts)); | |
621 | SW_FLOW_KEY_MEMCPY_OFFSET(match, opt_key_offset, &opts, sizeof(opts), | |
622 | is_mask); | |
623 | return 0; | |
624 | } | |
625 | ||
fc1372f8 WT |
626 | static int erspan_tun_opt_from_nlattr(const struct nlattr *a, |
627 | struct sw_flow_match *match, bool is_mask, | |
628 | bool log) | |
629 | { | |
630 | unsigned long opt_key_offset; | |
631 | ||
632 | BUILD_BUG_ON(sizeof(struct erspan_metadata) > | |
633 | sizeof(match->key->tun_opts)); | |
634 | ||
635 | if (nla_len(a) > sizeof(match->key->tun_opts)) { | |
636 | OVS_NLERR(log, "ERSPAN option length err (len %d, max %zu).", | |
637 | nla_len(a), sizeof(match->key->tun_opts)); | |
638 | return -EINVAL; | |
639 | } | |
640 | ||
641 | if (!is_mask) | |
642 | SW_FLOW_KEY_PUT(match, tun_opts_len, | |
643 | sizeof(struct erspan_metadata), false); | |
644 | else | |
645 | SW_FLOW_KEY_PUT(match, tun_opts_len, 0xff, true); | |
646 | ||
647 | opt_key_offset = TUN_METADATA_OFFSET(nla_len(a)); | |
648 | SW_FLOW_KEY_MEMCPY_OFFSET(match, opt_key_offset, nla_data(a), | |
649 | nla_len(a), is_mask); | |
650 | return 0; | |
651 | } | |
652 | ||
6b26ba3a JB |
653 | static int ip_tun_from_nlattr(const struct nlattr *attr, |
654 | struct sw_flow_match *match, bool is_mask, | |
655 | bool log) | |
e6445719 | 656 | { |
99e28f18 | 657 | bool ttl = false, ipv4 = false, ipv6 = false; |
18b6f717 | 658 | bool info_bridge_mode = false; |
99e28f18 PS |
659 | __be16 tun_flags = 0; |
660 | int opts_type = 0; | |
e6445719 PS |
661 | struct nlattr *a; |
662 | int rem; | |
e6445719 PS |
663 | |
664 | nla_for_each_nested(a, attr, rem) { | |
665 | int type = nla_type(a); | |
05da5898 JR |
666 | int err; |
667 | ||
e6445719 | 668 | if (type > OVS_TUNNEL_KEY_ATTR_MAX) { |
05da5898 JR |
669 | OVS_NLERR(log, "Tunnel attr %d out of range max %d", |
670 | type, OVS_TUNNEL_KEY_ATTR_MAX); | |
e6445719 PS |
671 | return -EINVAL; |
672 | } | |
673 | ||
982b5270 JG |
674 | if (!check_attr_len(nla_len(a), |
675 | ovs_tunnel_key_lens[type].len)) { | |
05da5898 | 676 | OVS_NLERR(log, "Tunnel attr %d has unexpected len %d expected %d", |
81bfe3c3 | 677 | type, nla_len(a), ovs_tunnel_key_lens[type].len); |
e6445719 PS |
678 | return -EINVAL; |
679 | } | |
680 | ||
681 | switch (type) { | |
682 | case OVS_TUNNEL_KEY_ATTR_ID: | |
683 | SW_FLOW_KEY_PUT(match, tun_key.tun_id, | |
684 | nla_get_be64(a), is_mask); | |
685 | tun_flags |= TUNNEL_KEY; | |
686 | break; | |
687 | case OVS_TUNNEL_KEY_ATTR_IPV4_SRC: | |
c1ea5d67 | 688 | SW_FLOW_KEY_PUT(match, tun_key.u.ipv4.src, |
67b61f6c | 689 | nla_get_in_addr(a), is_mask); |
6b26ba3a | 690 | ipv4 = true; |
e6445719 PS |
691 | break; |
692 | case OVS_TUNNEL_KEY_ATTR_IPV4_DST: | |
c1ea5d67 | 693 | SW_FLOW_KEY_PUT(match, tun_key.u.ipv4.dst, |
67b61f6c | 694 | nla_get_in_addr(a), is_mask); |
6b26ba3a JB |
695 | ipv4 = true; |
696 | break; | |
697 | case OVS_TUNNEL_KEY_ATTR_IPV6_SRC: | |
3d20f1f7 | 698 | SW_FLOW_KEY_PUT(match, tun_key.u.ipv6.src, |
6b26ba3a JB |
699 | nla_get_in6_addr(a), is_mask); |
700 | ipv6 = true; | |
701 | break; | |
702 | case OVS_TUNNEL_KEY_ATTR_IPV6_DST: | |
703 | SW_FLOW_KEY_PUT(match, tun_key.u.ipv6.dst, | |
704 | nla_get_in6_addr(a), is_mask); | |
705 | ipv6 = true; | |
e6445719 PS |
706 | break; |
707 | case OVS_TUNNEL_KEY_ATTR_TOS: | |
7c383fb2 | 708 | SW_FLOW_KEY_PUT(match, tun_key.tos, |
e6445719 PS |
709 | nla_get_u8(a), is_mask); |
710 | break; | |
711 | case OVS_TUNNEL_KEY_ATTR_TTL: | |
7c383fb2 | 712 | SW_FLOW_KEY_PUT(match, tun_key.ttl, |
e6445719 PS |
713 | nla_get_u8(a), is_mask); |
714 | ttl = true; | |
715 | break; | |
716 | case OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT: | |
717 | tun_flags |= TUNNEL_DONT_FRAGMENT; | |
718 | break; | |
719 | case OVS_TUNNEL_KEY_ATTR_CSUM: | |
720 | tun_flags |= TUNNEL_CSUM; | |
721 | break; | |
8f0aad6f WZ |
722 | case OVS_TUNNEL_KEY_ATTR_TP_SRC: |
723 | SW_FLOW_KEY_PUT(match, tun_key.tp_src, | |
724 | nla_get_be16(a), is_mask); | |
725 | break; | |
726 | case OVS_TUNNEL_KEY_ATTR_TP_DST: | |
727 | SW_FLOW_KEY_PUT(match, tun_key.tp_dst, | |
728 | nla_get_be16(a), is_mask); | |
729 | break; | |
67fa0341 JG |
730 | case OVS_TUNNEL_KEY_ATTR_OAM: |
731 | tun_flags |= TUNNEL_OAM; | |
732 | break; | |
f5796684 | 733 | case OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS: |
1dd144cf TG |
734 | if (opts_type) { |
735 | OVS_NLERR(log, "Multiple metadata blocks provided"); | |
736 | return -EINVAL; | |
737 | } | |
738 | ||
05da5898 JR |
739 | err = genev_tun_opt_from_nlattr(a, match, is_mask, log); |
740 | if (err) | |
741 | return err; | |
f5796684 | 742 | |
1dd144cf TG |
743 | tun_flags |= TUNNEL_GENEVE_OPT; |
744 | opts_type = type; | |
745 | break; | |
746 | case OVS_TUNNEL_KEY_ATTR_VXLAN_OPTS: | |
747 | if (opts_type) { | |
748 | OVS_NLERR(log, "Multiple metadata blocks provided"); | |
749 | return -EINVAL; | |
750 | } | |
751 | ||
752 | err = vxlan_tun_opt_from_nlattr(a, match, is_mask, log); | |
753 | if (err) | |
754 | return err; | |
755 | ||
756 | tun_flags |= TUNNEL_VXLAN_OPT; | |
757 | opts_type = type; | |
f5796684 | 758 | break; |
8f3dbfd7 KM |
759 | case OVS_TUNNEL_KEY_ATTR_PAD: |
760 | break; | |
fc1372f8 WT |
761 | case OVS_TUNNEL_KEY_ATTR_ERSPAN_OPTS: |
762 | if (opts_type) { | |
763 | OVS_NLERR(log, "Multiple metadata blocks provided"); | |
764 | return -EINVAL; | |
765 | } | |
766 | ||
767 | err = erspan_tun_opt_from_nlattr(a, match, is_mask, | |
768 | log); | |
769 | if (err) | |
770 | return err; | |
771 | ||
772 | tun_flags |= TUNNEL_ERSPAN_OPT; | |
773 | opts_type = type; | |
774 | break; | |
18b6f717 | 775 | case OVS_TUNNEL_KEY_ATTR_IPV4_INFO_BRIDGE: |
776 | info_bridge_mode = true; | |
777 | ipv4 = true; | |
778 | break; | |
e6445719 | 779 | default: |
6b26ba3a | 780 | OVS_NLERR(log, "Unknown IP tunnel attribute %d", |
f5796684 | 781 | type); |
e6445719 PS |
782 | return -EINVAL; |
783 | } | |
784 | } | |
785 | ||
786 | SW_FLOW_KEY_PUT(match, tun_key.tun_flags, tun_flags, is_mask); | |
00a93bab JB |
787 | if (is_mask) |
788 | SW_FLOW_KEY_MEMSET_FIELD(match, tun_proto, 0xff, true); | |
789 | else | |
6b26ba3a JB |
790 | SW_FLOW_KEY_PUT(match, tun_proto, ipv6 ? AF_INET6 : AF_INET, |
791 | false); | |
e6445719 PS |
792 | |
793 | if (rem > 0) { | |
6b26ba3a | 794 | OVS_NLERR(log, "IP tunnel attribute has %d unknown bytes.", |
05da5898 | 795 | rem); |
e6445719 PS |
796 | return -EINVAL; |
797 | } | |
798 | ||
6b26ba3a JB |
799 | if (ipv4 && ipv6) { |
800 | OVS_NLERR(log, "Mixed IPv4 and IPv6 tunnel attributes"); | |
801 | return -EINVAL; | |
802 | } | |
803 | ||
e6445719 | 804 | if (!is_mask) { |
6b26ba3a JB |
805 | if (!ipv4 && !ipv6) { |
806 | OVS_NLERR(log, "IP tunnel dst address not specified"); | |
807 | return -EINVAL; | |
808 | } | |
18b6f717 | 809 | if (ipv4) { |
810 | if (info_bridge_mode) { | |
811 | if (match->key->tun_key.u.ipv4.src || | |
812 | match->key->tun_key.u.ipv4.dst || | |
813 | match->key->tun_key.tp_src || | |
814 | match->key->tun_key.tp_dst || | |
815 | match->key->tun_key.ttl || | |
816 | match->key->tun_key.tos || | |
817 | tun_flags & ~TUNNEL_KEY) { | |
818 | OVS_NLERR(log, "IPv4 tun info is not correct"); | |
819 | return -EINVAL; | |
820 | } | |
821 | } else if (!match->key->tun_key.u.ipv4.dst) { | |
822 | OVS_NLERR(log, "IPv4 tunnel dst address is zero"); | |
823 | return -EINVAL; | |
824 | } | |
e6445719 | 825 | } |
6b26ba3a JB |
826 | if (ipv6 && ipv6_addr_any(&match->key->tun_key.u.ipv6.dst)) { |
827 | OVS_NLERR(log, "IPv6 tunnel dst address is zero"); | |
828 | return -EINVAL; | |
829 | } | |
e6445719 | 830 | |
18b6f717 | 831 | if (!ttl && !info_bridge_mode) { |
6b26ba3a | 832 | OVS_NLERR(log, "IP tunnel TTL not specified."); |
e6445719 PS |
833 | return -EINVAL; |
834 | } | |
835 | } | |
836 | ||
1dd144cf TG |
837 | return opts_type; |
838 | } | |
839 | ||
840 | static int vxlan_opt_to_nlattr(struct sk_buff *skb, | |
841 | const void *tun_opts, int swkey_tun_opts_len) | |
842 | { | |
614732ea | 843 | const struct vxlan_metadata *opts = tun_opts; |
1dd144cf TG |
844 | struct nlattr *nla; |
845 | ||
ae0be8de | 846 | nla = nla_nest_start_noflag(skb, OVS_TUNNEL_KEY_ATTR_VXLAN_OPTS); |
1dd144cf TG |
847 | if (!nla) |
848 | return -EMSGSIZE; | |
849 | ||
850 | if (nla_put_u32(skb, OVS_VXLAN_EXT_GBP, opts->gbp) < 0) | |
851 | return -EMSGSIZE; | |
852 | ||
853 | nla_nest_end(skb, nla); | |
e6445719 PS |
854 | return 0; |
855 | } | |
856 | ||
6b26ba3a JB |
857 | static int __ip_tun_to_nlattr(struct sk_buff *skb, |
858 | const struct ip_tunnel_key *output, | |
859 | const void *tun_opts, int swkey_tun_opts_len, | |
18b6f717 | 860 | unsigned short tun_proto, u8 mode) |
e6445719 | 861 | { |
e6445719 | 862 | if (output->tun_flags & TUNNEL_KEY && |
b46f6ded ND |
863 | nla_put_be64(skb, OVS_TUNNEL_KEY_ATTR_ID, output->tun_id, |
864 | OVS_TUNNEL_KEY_ATTR_PAD)) | |
e6445719 | 865 | return -EMSGSIZE; |
18b6f717 | 866 | |
867 | if (mode & IP_TUNNEL_INFO_BRIDGE) | |
868 | return nla_put_flag(skb, OVS_TUNNEL_KEY_ATTR_IPV4_INFO_BRIDGE) | |
869 | ? -EMSGSIZE : 0; | |
870 | ||
6b26ba3a JB |
871 | switch (tun_proto) { |
872 | case AF_INET: | |
873 | if (output->u.ipv4.src && | |
874 | nla_put_in_addr(skb, OVS_TUNNEL_KEY_ATTR_IPV4_SRC, | |
875 | output->u.ipv4.src)) | |
876 | return -EMSGSIZE; | |
877 | if (output->u.ipv4.dst && | |
878 | nla_put_in_addr(skb, OVS_TUNNEL_KEY_ATTR_IPV4_DST, | |
879 | output->u.ipv4.dst)) | |
880 | return -EMSGSIZE; | |
881 | break; | |
882 | case AF_INET6: | |
883 | if (!ipv6_addr_any(&output->u.ipv6.src) && | |
884 | nla_put_in6_addr(skb, OVS_TUNNEL_KEY_ATTR_IPV6_SRC, | |
885 | &output->u.ipv6.src)) | |
886 | return -EMSGSIZE; | |
887 | if (!ipv6_addr_any(&output->u.ipv6.dst) && | |
888 | nla_put_in6_addr(skb, OVS_TUNNEL_KEY_ATTR_IPV6_DST, | |
889 | &output->u.ipv6.dst)) | |
890 | return -EMSGSIZE; | |
891 | break; | |
892 | } | |
7c383fb2 JB |
893 | if (output->tos && |
894 | nla_put_u8(skb, OVS_TUNNEL_KEY_ATTR_TOS, output->tos)) | |
e6445719 | 895 | return -EMSGSIZE; |
7c383fb2 | 896 | if (nla_put_u8(skb, OVS_TUNNEL_KEY_ATTR_TTL, output->ttl)) |
e6445719 PS |
897 | return -EMSGSIZE; |
898 | if ((output->tun_flags & TUNNEL_DONT_FRAGMENT) && | |
67fa0341 | 899 | nla_put_flag(skb, OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT)) |
e6445719 PS |
900 | return -EMSGSIZE; |
901 | if ((output->tun_flags & TUNNEL_CSUM) && | |
67fa0341 JG |
902 | nla_put_flag(skb, OVS_TUNNEL_KEY_ATTR_CSUM)) |
903 | return -EMSGSIZE; | |
8f0aad6f WZ |
904 | if (output->tp_src && |
905 | nla_put_be16(skb, OVS_TUNNEL_KEY_ATTR_TP_SRC, output->tp_src)) | |
906 | return -EMSGSIZE; | |
907 | if (output->tp_dst && | |
908 | nla_put_be16(skb, OVS_TUNNEL_KEY_ATTR_TP_DST, output->tp_dst)) | |
909 | return -EMSGSIZE; | |
67fa0341 JG |
910 | if ((output->tun_flags & TUNNEL_OAM) && |
911 | nla_put_flag(skb, OVS_TUNNEL_KEY_ATTR_OAM)) | |
e6445719 | 912 | return -EMSGSIZE; |
fc4099f1 | 913 | if (swkey_tun_opts_len) { |
1dd144cf TG |
914 | if (output->tun_flags & TUNNEL_GENEVE_OPT && |
915 | nla_put(skb, OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS, | |
916 | swkey_tun_opts_len, tun_opts)) | |
917 | return -EMSGSIZE; | |
918 | else if (output->tun_flags & TUNNEL_VXLAN_OPT && | |
919 | vxlan_opt_to_nlattr(skb, tun_opts, swkey_tun_opts_len)) | |
920 | return -EMSGSIZE; | |
fc1372f8 WT |
921 | else if (output->tun_flags & TUNNEL_ERSPAN_OPT && |
922 | nla_put(skb, OVS_TUNNEL_KEY_ATTR_ERSPAN_OPTS, | |
923 | swkey_tun_opts_len, tun_opts)) | |
924 | return -EMSGSIZE; | |
1dd144cf | 925 | } |
e6445719 | 926 | |
e6445719 PS |
927 | return 0; |
928 | } | |
929 | ||
6b26ba3a JB |
930 | static int ip_tun_to_nlattr(struct sk_buff *skb, |
931 | const struct ip_tunnel_key *output, | |
932 | const void *tun_opts, int swkey_tun_opts_len, | |
18b6f717 | 933 | unsigned short tun_proto, u8 mode) |
f5796684 JG |
934 | { |
935 | struct nlattr *nla; | |
936 | int err; | |
937 | ||
ae0be8de | 938 | nla = nla_nest_start_noflag(skb, OVS_KEY_ATTR_TUNNEL); |
f5796684 JG |
939 | if (!nla) |
940 | return -EMSGSIZE; | |
941 | ||
6b26ba3a | 942 | err = __ip_tun_to_nlattr(skb, output, tun_opts, swkey_tun_opts_len, |
18b6f717 | 943 | tun_proto, mode); |
f5796684 JG |
944 | if (err) |
945 | return err; | |
946 | ||
947 | nla_nest_end(skb, nla); | |
948 | return 0; | |
949 | } | |
950 | ||
fc4099f1 PS |
951 | int ovs_nla_put_tunnel_info(struct sk_buff *skb, |
952 | struct ip_tunnel_info *tun_info) | |
8f0aad6f | 953 | { |
ba3e2084 DM |
954 | return __ip_tun_to_nlattr(skb, &tun_info->key, |
955 | ip_tunnel_info_opts(tun_info), | |
956 | tun_info->options_len, | |
18b6f717 | 957 | ip_tunnel_info_af(tun_info), tun_info->mode); |
8f0aad6f WZ |
958 | } |
959 | ||
018c1dda EG |
960 | static int encode_vlan_from_nlattrs(struct sw_flow_match *match, |
961 | const struct nlattr *a[], | |
962 | bool is_mask, bool inner) | |
963 | { | |
964 | __be16 tci = 0; | |
965 | __be16 tpid = 0; | |
966 | ||
967 | if (a[OVS_KEY_ATTR_VLAN]) | |
968 | tci = nla_get_be16(a[OVS_KEY_ATTR_VLAN]); | |
969 | ||
970 | if (a[OVS_KEY_ATTR_ETHERTYPE]) | |
971 | tpid = nla_get_be16(a[OVS_KEY_ATTR_ETHERTYPE]); | |
972 | ||
973 | if (likely(!inner)) { | |
974 | SW_FLOW_KEY_PUT(match, eth.vlan.tpid, tpid, is_mask); | |
975 | SW_FLOW_KEY_PUT(match, eth.vlan.tci, tci, is_mask); | |
976 | } else { | |
977 | SW_FLOW_KEY_PUT(match, eth.cvlan.tpid, tpid, is_mask); | |
978 | SW_FLOW_KEY_PUT(match, eth.cvlan.tci, tci, is_mask); | |
979 | } | |
980 | return 0; | |
981 | } | |
982 | ||
983 | static int validate_vlan_from_nlattrs(const struct sw_flow_match *match, | |
984 | u64 key_attrs, bool inner, | |
985 | const struct nlattr **a, bool log) | |
986 | { | |
987 | __be16 tci = 0; | |
988 | ||
989 | if (!((key_attrs & (1 << OVS_KEY_ATTR_ETHERNET)) && | |
990 | (key_attrs & (1 << OVS_KEY_ATTR_ETHERTYPE)) && | |
991 | eth_type_vlan(nla_get_be16(a[OVS_KEY_ATTR_ETHERTYPE])))) { | |
992 | /* Not a VLAN. */ | |
993 | return 0; | |
994 | } | |
995 | ||
996 | if (!((key_attrs & (1 << OVS_KEY_ATTR_VLAN)) && | |
997 | (key_attrs & (1 << OVS_KEY_ATTR_ENCAP)))) { | |
998 | OVS_NLERR(log, "Invalid %s frame", (inner) ? "C-VLAN" : "VLAN"); | |
999 | return -EINVAL; | |
1000 | } | |
1001 | ||
1002 | if (a[OVS_KEY_ATTR_VLAN]) | |
1003 | tci = nla_get_be16(a[OVS_KEY_ATTR_VLAN]); | |
1004 | ||
9df46aef | 1005 | if (!(tci & htons(VLAN_CFI_MASK))) { |
018c1dda | 1006 | if (tci) { |
9df46aef | 1007 | OVS_NLERR(log, "%s TCI does not have VLAN_CFI_MASK bit set.", |
018c1dda EG |
1008 | (inner) ? "C-VLAN" : "VLAN"); |
1009 | return -EINVAL; | |
1010 | } else if (nla_len(a[OVS_KEY_ATTR_ENCAP])) { | |
1011 | /* Corner case for truncated VLAN header. */ | |
1012 | OVS_NLERR(log, "Truncated %s header has non-zero encap attribute.", | |
1013 | (inner) ? "C-VLAN" : "VLAN"); | |
1014 | return -EINVAL; | |
1015 | } | |
1016 | } | |
1017 | ||
1018 | return 1; | |
1019 | } | |
1020 | ||
1021 | static int validate_vlan_mask_from_nlattrs(const struct sw_flow_match *match, | |
1022 | u64 key_attrs, bool inner, | |
1023 | const struct nlattr **a, bool log) | |
1024 | { | |
1025 | __be16 tci = 0; | |
1026 | __be16 tpid = 0; | |
1027 | bool encap_valid = !!(match->key->eth.vlan.tci & | |
9df46aef | 1028 | htons(VLAN_CFI_MASK)); |
018c1dda | 1029 | bool i_encap_valid = !!(match->key->eth.cvlan.tci & |
9df46aef | 1030 | htons(VLAN_CFI_MASK)); |
018c1dda EG |
1031 | |
1032 | if (!(key_attrs & (1 << OVS_KEY_ATTR_ENCAP))) { | |
1033 | /* Not a VLAN. */ | |
1034 | return 0; | |
1035 | } | |
1036 | ||
1037 | if ((!inner && !encap_valid) || (inner && !i_encap_valid)) { | |
1038 | OVS_NLERR(log, "Encap mask attribute is set for non-%s frame.", | |
1039 | (inner) ? "C-VLAN" : "VLAN"); | |
1040 | return -EINVAL; | |
1041 | } | |
1042 | ||
1043 | if (a[OVS_KEY_ATTR_VLAN]) | |
1044 | tci = nla_get_be16(a[OVS_KEY_ATTR_VLAN]); | |
1045 | ||
1046 | if (a[OVS_KEY_ATTR_ETHERTYPE]) | |
1047 | tpid = nla_get_be16(a[OVS_KEY_ATTR_ETHERTYPE]); | |
1048 | ||
1049 | if (tpid != htons(0xffff)) { | |
1050 | OVS_NLERR(log, "Must have an exact match on %s TPID (mask=%x).", | |
1051 | (inner) ? "C-VLAN" : "VLAN", ntohs(tpid)); | |
1052 | return -EINVAL; | |
1053 | } | |
9df46aef MM |
1054 | if (!(tci & htons(VLAN_CFI_MASK))) { |
1055 | OVS_NLERR(log, "%s TCI mask does not have exact match for VLAN_CFI_MASK bit.", | |
018c1dda EG |
1056 | (inner) ? "C-VLAN" : "VLAN"); |
1057 | return -EINVAL; | |
1058 | } | |
1059 | ||
1060 | return 1; | |
1061 | } | |
1062 | ||
1063 | static int __parse_vlan_from_nlattrs(struct sw_flow_match *match, | |
1064 | u64 *key_attrs, bool inner, | |
1065 | const struct nlattr **a, bool is_mask, | |
1066 | bool log) | |
1067 | { | |
1068 | int err; | |
1069 | const struct nlattr *encap; | |
1070 | ||
1071 | if (!is_mask) | |
1072 | err = validate_vlan_from_nlattrs(match, *key_attrs, inner, | |
1073 | a, log); | |
1074 | else | |
1075 | err = validate_vlan_mask_from_nlattrs(match, *key_attrs, inner, | |
1076 | a, log); | |
1077 | if (err <= 0) | |
1078 | return err; | |
1079 | ||
1080 | err = encode_vlan_from_nlattrs(match, a, is_mask, inner); | |
1081 | if (err) | |
1082 | return err; | |
1083 | ||
1084 | *key_attrs &= ~(1 << OVS_KEY_ATTR_ENCAP); | |
1085 | *key_attrs &= ~(1 << OVS_KEY_ATTR_VLAN); | |
1086 | *key_attrs &= ~(1 << OVS_KEY_ATTR_ETHERTYPE); | |
1087 | ||
1088 | encap = a[OVS_KEY_ATTR_ENCAP]; | |
1089 | ||
1090 | if (!is_mask) | |
1091 | err = parse_flow_nlattrs(encap, a, key_attrs, log); | |
1092 | else | |
1093 | err = parse_flow_mask_nlattrs(encap, a, key_attrs, log); | |
1094 | ||
1095 | return err; | |
1096 | } | |
1097 | ||
1098 | static int parse_vlan_from_nlattrs(struct sw_flow_match *match, | |
1099 | u64 *key_attrs, const struct nlattr **a, | |
1100 | bool is_mask, bool log) | |
1101 | { | |
1102 | int err; | |
1103 | bool encap_valid = false; | |
1104 | ||
1105 | err = __parse_vlan_from_nlattrs(match, key_attrs, false, a, | |
1106 | is_mask, log); | |
1107 | if (err) | |
1108 | return err; | |
1109 | ||
9df46aef | 1110 | encap_valid = !!(match->key->eth.vlan.tci & htons(VLAN_CFI_MASK)); |
018c1dda EG |
1111 | if (encap_valid) { |
1112 | err = __parse_vlan_from_nlattrs(match, key_attrs, true, a, | |
1113 | is_mask, log); | |
1114 | if (err) | |
1115 | return err; | |
1116 | } | |
1117 | ||
1118 | return 0; | |
1119 | } | |
1120 | ||
0a6410fb JB |
1121 | static int parse_eth_type_from_nlattrs(struct sw_flow_match *match, |
1122 | u64 *attrs, const struct nlattr **a, | |
1123 | bool is_mask, bool log) | |
1124 | { | |
1125 | __be16 eth_type; | |
1126 | ||
1127 | eth_type = nla_get_be16(a[OVS_KEY_ATTR_ETHERTYPE]); | |
1128 | if (is_mask) { | |
1129 | /* Always exact match EtherType. */ | |
1130 | eth_type = htons(0xffff); | |
1131 | } else if (!eth_proto_is_802_3(eth_type)) { | |
1132 | OVS_NLERR(log, "EtherType %x is less than min %x", | |
1133 | ntohs(eth_type), ETH_P_802_3_MIN); | |
1134 | return -EINVAL; | |
1135 | } | |
1136 | ||
1137 | SW_FLOW_KEY_PUT(match, eth.type, eth_type, is_mask); | |
1138 | *attrs &= ~(1 << OVS_KEY_ATTR_ETHERTYPE); | |
1139 | return 0; | |
1140 | } | |
1141 | ||
c2ac6673 JS |
1142 | static int metadata_from_nlattrs(struct net *net, struct sw_flow_match *match, |
1143 | u64 *attrs, const struct nlattr **a, | |
1144 | bool is_mask, bool log) | |
e6445719 | 1145 | { |
0a6410fb JB |
1146 | u8 mac_proto = MAC_PROTO_ETHERNET; |
1147 | ||
971427f3 AZ |
1148 | if (*attrs & (1 << OVS_KEY_ATTR_DP_HASH)) { |
1149 | u32 hash_val = nla_get_u32(a[OVS_KEY_ATTR_DP_HASH]); | |
1150 | ||
1151 | SW_FLOW_KEY_PUT(match, ovs_flow_hash, hash_val, is_mask); | |
1152 | *attrs &= ~(1 << OVS_KEY_ATTR_DP_HASH); | |
1153 | } | |
1154 | ||
1155 | if (*attrs & (1 << OVS_KEY_ATTR_RECIRC_ID)) { | |
1156 | u32 recirc_id = nla_get_u32(a[OVS_KEY_ATTR_RECIRC_ID]); | |
1157 | ||
1158 | SW_FLOW_KEY_PUT(match, recirc_id, recirc_id, is_mask); | |
1159 | *attrs &= ~(1 << OVS_KEY_ATTR_RECIRC_ID); | |
1160 | } | |
1161 | ||
e6445719 PS |
1162 | if (*attrs & (1 << OVS_KEY_ATTR_PRIORITY)) { |
1163 | SW_FLOW_KEY_PUT(match, phy.priority, | |
1164 | nla_get_u32(a[OVS_KEY_ATTR_PRIORITY]), is_mask); | |
1165 | *attrs &= ~(1 << OVS_KEY_ATTR_PRIORITY); | |
1166 | } | |
1167 | ||
1168 | if (*attrs & (1 << OVS_KEY_ATTR_IN_PORT)) { | |
1169 | u32 in_port = nla_get_u32(a[OVS_KEY_ATTR_IN_PORT]); | |
1170 | ||
426cda5c | 1171 | if (is_mask) { |
e6445719 | 1172 | in_port = 0xffffffff; /* Always exact match in_port. */ |
426cda5c | 1173 | } else if (in_port >= DP_MAX_PORTS) { |
05da5898 | 1174 | OVS_NLERR(log, "Port %d exceeds max allowable %d", |
426cda5c | 1175 | in_port, DP_MAX_PORTS); |
e6445719 | 1176 | return -EINVAL; |
426cda5c | 1177 | } |
e6445719 PS |
1178 | |
1179 | SW_FLOW_KEY_PUT(match, phy.in_port, in_port, is_mask); | |
1180 | *attrs &= ~(1 << OVS_KEY_ATTR_IN_PORT); | |
1181 | } else if (!is_mask) { | |
1182 | SW_FLOW_KEY_PUT(match, phy.in_port, DP_MAX_PORTS, is_mask); | |
1183 | } | |
1184 | ||
1185 | if (*attrs & (1 << OVS_KEY_ATTR_SKB_MARK)) { | |
1186 | uint32_t mark = nla_get_u32(a[OVS_KEY_ATTR_SKB_MARK]); | |
1187 | ||
1188 | SW_FLOW_KEY_PUT(match, phy.skb_mark, mark, is_mask); | |
1189 | *attrs &= ~(1 << OVS_KEY_ATTR_SKB_MARK); | |
1190 | } | |
1191 | if (*attrs & (1 << OVS_KEY_ATTR_TUNNEL)) { | |
6b26ba3a JB |
1192 | if (ip_tun_from_nlattr(a[OVS_KEY_ATTR_TUNNEL], match, |
1193 | is_mask, log) < 0) | |
e6445719 PS |
1194 | return -EINVAL; |
1195 | *attrs &= ~(1 << OVS_KEY_ATTR_TUNNEL); | |
1196 | } | |
7f8a436e JS |
1197 | |
1198 | if (*attrs & (1 << OVS_KEY_ATTR_CT_STATE) && | |
c2ac6673 | 1199 | ovs_ct_verify(net, OVS_KEY_ATTR_CT_STATE)) { |
fbccce59 | 1200 | u32 ct_state = nla_get_u32(a[OVS_KEY_ATTR_CT_STATE]); |
7f8a436e | 1201 | |
9e384715 | 1202 | if (ct_state & ~CT_SUPPORTED_MASK) { |
fbccce59 | 1203 | OVS_NLERR(log, "ct_state flags %08x unsupported", |
6f225952 JS |
1204 | ct_state); |
1205 | return -EINVAL; | |
1206 | } | |
7f8a436e | 1207 | |
316d4d78 | 1208 | SW_FLOW_KEY_PUT(match, ct_state, ct_state, is_mask); |
7f8a436e JS |
1209 | *attrs &= ~(1ULL << OVS_KEY_ATTR_CT_STATE); |
1210 | } | |
1211 | if (*attrs & (1 << OVS_KEY_ATTR_CT_ZONE) && | |
c2ac6673 | 1212 | ovs_ct_verify(net, OVS_KEY_ATTR_CT_ZONE)) { |
7f8a436e JS |
1213 | u16 ct_zone = nla_get_u16(a[OVS_KEY_ATTR_CT_ZONE]); |
1214 | ||
316d4d78 | 1215 | SW_FLOW_KEY_PUT(match, ct_zone, ct_zone, is_mask); |
7f8a436e JS |
1216 | *attrs &= ~(1ULL << OVS_KEY_ATTR_CT_ZONE); |
1217 | } | |
182e3042 | 1218 | if (*attrs & (1 << OVS_KEY_ATTR_CT_MARK) && |
c2ac6673 | 1219 | ovs_ct_verify(net, OVS_KEY_ATTR_CT_MARK)) { |
182e3042 JS |
1220 | u32 mark = nla_get_u32(a[OVS_KEY_ATTR_CT_MARK]); |
1221 | ||
1222 | SW_FLOW_KEY_PUT(match, ct.mark, mark, is_mask); | |
1223 | *attrs &= ~(1ULL << OVS_KEY_ATTR_CT_MARK); | |
1224 | } | |
33db4125 JS |
1225 | if (*attrs & (1 << OVS_KEY_ATTR_CT_LABELS) && |
1226 | ovs_ct_verify(net, OVS_KEY_ATTR_CT_LABELS)) { | |
1227 | const struct ovs_key_ct_labels *cl; | |
c2ac6673 | 1228 | |
33db4125 JS |
1229 | cl = nla_data(a[OVS_KEY_ATTR_CT_LABELS]); |
1230 | SW_FLOW_KEY_MEMCPY(match, ct.labels, cl->ct_labels, | |
c2ac6673 | 1231 | sizeof(*cl), is_mask); |
33db4125 | 1232 | *attrs &= ~(1ULL << OVS_KEY_ATTR_CT_LABELS); |
c2ac6673 | 1233 | } |
9dd7f890 JR |
1234 | if (*attrs & (1ULL << OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV4)) { |
1235 | const struct ovs_key_ct_tuple_ipv4 *ct; | |
1236 | ||
1237 | ct = nla_data(a[OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV4]); | |
1238 | ||
1239 | SW_FLOW_KEY_PUT(match, ipv4.ct_orig.src, ct->ipv4_src, is_mask); | |
1240 | SW_FLOW_KEY_PUT(match, ipv4.ct_orig.dst, ct->ipv4_dst, is_mask); | |
1241 | SW_FLOW_KEY_PUT(match, ct.orig_tp.src, ct->src_port, is_mask); | |
1242 | SW_FLOW_KEY_PUT(match, ct.orig_tp.dst, ct->dst_port, is_mask); | |
316d4d78 | 1243 | SW_FLOW_KEY_PUT(match, ct_orig_proto, ct->ipv4_proto, is_mask); |
9dd7f890 JR |
1244 | *attrs &= ~(1ULL << OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV4); |
1245 | } | |
1246 | if (*attrs & (1ULL << OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV6)) { | |
1247 | const struct ovs_key_ct_tuple_ipv6 *ct; | |
1248 | ||
1249 | ct = nla_data(a[OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV6]); | |
1250 | ||
1251 | SW_FLOW_KEY_MEMCPY(match, ipv6.ct_orig.src, &ct->ipv6_src, | |
1252 | sizeof(match->key->ipv6.ct_orig.src), | |
1253 | is_mask); | |
1254 | SW_FLOW_KEY_MEMCPY(match, ipv6.ct_orig.dst, &ct->ipv6_dst, | |
1255 | sizeof(match->key->ipv6.ct_orig.dst), | |
1256 | is_mask); | |
1257 | SW_FLOW_KEY_PUT(match, ct.orig_tp.src, ct->src_port, is_mask); | |
1258 | SW_FLOW_KEY_PUT(match, ct.orig_tp.dst, ct->dst_port, is_mask); | |
316d4d78 | 1259 | SW_FLOW_KEY_PUT(match, ct_orig_proto, ct->ipv6_proto, is_mask); |
9dd7f890 JR |
1260 | *attrs &= ~(1ULL << OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV6); |
1261 | } | |
329f45bc | 1262 | |
0a6410fb JB |
1263 | /* For layer 3 packets the Ethernet type is provided |
1264 | * and treated as metadata but no MAC addresses are provided. | |
1265 | */ | |
1266 | if (!(*attrs & (1ULL << OVS_KEY_ATTR_ETHERNET)) && | |
1267 | (*attrs & (1ULL << OVS_KEY_ATTR_ETHERTYPE))) | |
1268 | mac_proto = MAC_PROTO_NONE; | |
1269 | ||
329f45bc | 1270 | /* Always exact match mac_proto */ |
0a6410fb JB |
1271 | SW_FLOW_KEY_PUT(match, mac_proto, is_mask ? 0xff : mac_proto, is_mask); |
1272 | ||
1273 | if (mac_proto == MAC_PROTO_NONE) | |
1274 | return parse_eth_type_from_nlattrs(match, attrs, a, is_mask, | |
1275 | log); | |
329f45bc | 1276 | |
e6445719 PS |
1277 | return 0; |
1278 | } | |
1279 | ||
b2d0f5d5 YY |
1280 | int nsh_hdr_from_nlattr(const struct nlattr *attr, |
1281 | struct nshhdr *nh, size_t size) | |
1282 | { | |
1283 | struct nlattr *a; | |
1284 | int rem; | |
1285 | u8 flags = 0; | |
1286 | u8 ttl = 0; | |
1287 | int mdlen = 0; | |
1288 | ||
1289 | /* validate_nsh has check this, so we needn't do duplicate check here | |
1290 | */ | |
1291 | if (size < NSH_BASE_HDR_LEN) | |
1292 | return -ENOBUFS; | |
1293 | ||
1294 | nla_for_each_nested(a, attr, rem) { | |
1295 | int type = nla_type(a); | |
1296 | ||
1297 | switch (type) { | |
1298 | case OVS_NSH_KEY_ATTR_BASE: { | |
1299 | const struct ovs_nsh_key_base *base = nla_data(a); | |
1300 | ||
1301 | flags = base->flags; | |
1302 | ttl = base->ttl; | |
1303 | nh->np = base->np; | |
1304 | nh->mdtype = base->mdtype; | |
1305 | nh->path_hdr = base->path_hdr; | |
1306 | break; | |
1307 | } | |
1308 | case OVS_NSH_KEY_ATTR_MD1: | |
1309 | mdlen = nla_len(a); | |
1310 | if (mdlen > size - NSH_BASE_HDR_LEN) | |
1311 | return -ENOBUFS; | |
1312 | memcpy(&nh->md1, nla_data(a), mdlen); | |
1313 | break; | |
1314 | ||
1315 | case OVS_NSH_KEY_ATTR_MD2: | |
1316 | mdlen = nla_len(a); | |
1317 | if (mdlen > size - NSH_BASE_HDR_LEN) | |
1318 | return -ENOBUFS; | |
1319 | memcpy(&nh->md2, nla_data(a), mdlen); | |
1320 | break; | |
1321 | ||
1322 | default: | |
1323 | return -EINVAL; | |
1324 | } | |
1325 | } | |
1326 | ||
1327 | /* nsh header length = NSH_BASE_HDR_LEN + mdlen */ | |
1328 | nh->ver_flags_ttl_len = 0; | |
1329 | nsh_set_flags_ttl_len(nh, flags, ttl, NSH_BASE_HDR_LEN + mdlen); | |
1330 | ||
1331 | return 0; | |
1332 | } | |
1333 | ||
1334 | int nsh_key_from_nlattr(const struct nlattr *attr, | |
1335 | struct ovs_key_nsh *nsh, struct ovs_key_nsh *nsh_mask) | |
1336 | { | |
1337 | struct nlattr *a; | |
1338 | int rem; | |
1339 | ||
1340 | /* validate_nsh has check this, so we needn't do duplicate check here | |
1341 | */ | |
1342 | nla_for_each_nested(a, attr, rem) { | |
1343 | int type = nla_type(a); | |
1344 | ||
1345 | switch (type) { | |
1346 | case OVS_NSH_KEY_ATTR_BASE: { | |
1347 | const struct ovs_nsh_key_base *base = nla_data(a); | |
1348 | const struct ovs_nsh_key_base *base_mask = base + 1; | |
1349 | ||
1350 | nsh->base = *base; | |
1351 | nsh_mask->base = *base_mask; | |
1352 | break; | |
1353 | } | |
1354 | case OVS_NSH_KEY_ATTR_MD1: { | |
1355 | const struct ovs_nsh_key_md1 *md1 = nla_data(a); | |
1356 | const struct ovs_nsh_key_md1 *md1_mask = md1 + 1; | |
1357 | ||
1358 | memcpy(nsh->context, md1->context, sizeof(*md1)); | |
1359 | memcpy(nsh_mask->context, md1_mask->context, | |
1360 | sizeof(*md1_mask)); | |
1361 | break; | |
1362 | } | |
1363 | case OVS_NSH_KEY_ATTR_MD2: | |
1364 | /* Not supported yet */ | |
1365 | return -ENOTSUPP; | |
1366 | default: | |
1367 | return -EINVAL; | |
1368 | } | |
1369 | } | |
1370 | ||
1371 | return 0; | |
1372 | } | |
1373 | ||
1374 | static int nsh_key_put_from_nlattr(const struct nlattr *attr, | |
1375 | struct sw_flow_match *match, bool is_mask, | |
1376 | bool is_push_nsh, bool log) | |
1377 | { | |
1378 | struct nlattr *a; | |
1379 | int rem; | |
1380 | bool has_base = false; | |
1381 | bool has_md1 = false; | |
1382 | bool has_md2 = false; | |
1383 | u8 mdtype = 0; | |
1384 | int mdlen = 0; | |
1385 | ||
1386 | if (WARN_ON(is_push_nsh && is_mask)) | |
1387 | return -EINVAL; | |
1388 | ||
1389 | nla_for_each_nested(a, attr, rem) { | |
1390 | int type = nla_type(a); | |
1391 | int i; | |
1392 | ||
1393 | if (type > OVS_NSH_KEY_ATTR_MAX) { | |
1394 | OVS_NLERR(log, "nsh attr %d is out of range max %d", | |
1395 | type, OVS_NSH_KEY_ATTR_MAX); | |
1396 | return -EINVAL; | |
1397 | } | |
1398 | ||
1399 | if (!check_attr_len(nla_len(a), | |
1400 | ovs_nsh_key_attr_lens[type].len)) { | |
1401 | OVS_NLERR( | |
1402 | log, | |
1403 | "nsh attr %d has unexpected len %d expected %d", | |
1404 | type, | |
1405 | nla_len(a), | |
1406 | ovs_nsh_key_attr_lens[type].len | |
1407 | ); | |
1408 | return -EINVAL; | |
1409 | } | |
1410 | ||
1411 | switch (type) { | |
1412 | case OVS_NSH_KEY_ATTR_BASE: { | |
1413 | const struct ovs_nsh_key_base *base = nla_data(a); | |
1414 | ||
1415 | has_base = true; | |
1416 | mdtype = base->mdtype; | |
1417 | SW_FLOW_KEY_PUT(match, nsh.base.flags, | |
1418 | base->flags, is_mask); | |
1419 | SW_FLOW_KEY_PUT(match, nsh.base.ttl, | |
1420 | base->ttl, is_mask); | |
1421 | SW_FLOW_KEY_PUT(match, nsh.base.mdtype, | |
1422 | base->mdtype, is_mask); | |
1423 | SW_FLOW_KEY_PUT(match, nsh.base.np, | |
1424 | base->np, is_mask); | |
1425 | SW_FLOW_KEY_PUT(match, nsh.base.path_hdr, | |
1426 | base->path_hdr, is_mask); | |
1427 | break; | |
1428 | } | |
1429 | case OVS_NSH_KEY_ATTR_MD1: { | |
1430 | const struct ovs_nsh_key_md1 *md1 = nla_data(a); | |
1431 | ||
1432 | has_md1 = true; | |
1433 | for (i = 0; i < NSH_MD1_CONTEXT_SIZE; i++) | |
1434 | SW_FLOW_KEY_PUT(match, nsh.context[i], | |
1435 | md1->context[i], is_mask); | |
1436 | break; | |
1437 | } | |
1438 | case OVS_NSH_KEY_ATTR_MD2: | |
1439 | if (!is_push_nsh) /* Not supported MD type 2 yet */ | |
1440 | return -ENOTSUPP; | |
1441 | ||
1442 | has_md2 = true; | |
1443 | mdlen = nla_len(a); | |
1444 | if (mdlen > NSH_CTX_HDRS_MAX_LEN || mdlen <= 0) { | |
1445 | OVS_NLERR( | |
1446 | log, | |
1447 | "Invalid MD length %d for MD type %d", | |
1448 | mdlen, | |
1449 | mdtype | |
1450 | ); | |
1451 | return -EINVAL; | |
1452 | } | |
1453 | break; | |
1454 | default: | |
1455 | OVS_NLERR(log, "Unknown nsh attribute %d", | |
1456 | type); | |
1457 | return -EINVAL; | |
1458 | } | |
1459 | } | |
1460 | ||
1461 | if (rem > 0) { | |
1462 | OVS_NLERR(log, "nsh attribute has %d unknown bytes.", rem); | |
1463 | return -EINVAL; | |
1464 | } | |
1465 | ||
1466 | if (has_md1 && has_md2) { | |
1467 | OVS_NLERR( | |
1468 | 1, | |
1469 | "invalid nsh attribute: md1 and md2 are exclusive." | |
1470 | ); | |
1471 | return -EINVAL; | |
1472 | } | |
1473 | ||
1474 | if (!is_mask) { | |
1475 | if ((has_md1 && mdtype != NSH_M_TYPE1) || | |
1476 | (has_md2 && mdtype != NSH_M_TYPE2)) { | |
1477 | OVS_NLERR(1, "nsh attribute has unmatched MD type %d.", | |
1478 | mdtype); | |
1479 | return -EINVAL; | |
1480 | } | |
1481 | ||
1482 | if (is_push_nsh && | |
1483 | (!has_base || (!has_md1 && !has_md2))) { | |
1484 | OVS_NLERR( | |
1485 | 1, | |
1486 | "push_nsh: missing base or metadata attributes" | |
1487 | ); | |
1488 | return -EINVAL; | |
1489 | } | |
1490 | } | |
1491 | ||
1492 | return 0; | |
1493 | } | |
1494 | ||
c2ac6673 JS |
1495 | static int ovs_key_from_nlattrs(struct net *net, struct sw_flow_match *match, |
1496 | u64 attrs, const struct nlattr **a, | |
1497 | bool is_mask, bool log) | |
e6445719 PS |
1498 | { |
1499 | int err; | |
e6445719 | 1500 | |
c2ac6673 | 1501 | err = metadata_from_nlattrs(net, match, &attrs, a, is_mask, log); |
e6445719 PS |
1502 | if (err) |
1503 | return err; | |
1504 | ||
1505 | if (attrs & (1 << OVS_KEY_ATTR_ETHERNET)) { | |
1506 | const struct ovs_key_ethernet *eth_key; | |
1507 | ||
1508 | eth_key = nla_data(a[OVS_KEY_ATTR_ETHERNET]); | |
1509 | SW_FLOW_KEY_MEMCPY(match, eth.src, | |
1510 | eth_key->eth_src, ETH_ALEN, is_mask); | |
1511 | SW_FLOW_KEY_MEMCPY(match, eth.dst, | |
1512 | eth_key->eth_dst, ETH_ALEN, is_mask); | |
1513 | attrs &= ~(1 << OVS_KEY_ATTR_ETHERNET); | |
e6445719 | 1514 | |
0a6410fb JB |
1515 | if (attrs & (1 << OVS_KEY_ATTR_VLAN)) { |
1516 | /* VLAN attribute is always parsed before getting here since it | |
1517 | * may occur multiple times. | |
1518 | */ | |
1519 | OVS_NLERR(log, "VLAN attribute unexpected."); | |
e6445719 PS |
1520 | return -EINVAL; |
1521 | } | |
1522 | ||
0a6410fb JB |
1523 | if (attrs & (1 << OVS_KEY_ATTR_ETHERTYPE)) { |
1524 | err = parse_eth_type_from_nlattrs(match, &attrs, a, is_mask, | |
1525 | log); | |
1526 | if (err) | |
1527 | return err; | |
1528 | } else if (!is_mask) { | |
1529 | SW_FLOW_KEY_PUT(match, eth.type, htons(ETH_P_802_2), is_mask); | |
1530 | } | |
1531 | } else if (!match->key->eth.type) { | |
1532 | OVS_NLERR(log, "Either Ethernet header or EtherType is required."); | |
1533 | return -EINVAL; | |
e6445719 PS |
1534 | } |
1535 | ||
1536 | if (attrs & (1 << OVS_KEY_ATTR_IPV4)) { | |
1537 | const struct ovs_key_ipv4 *ipv4_key; | |
1538 | ||
1539 | ipv4_key = nla_data(a[OVS_KEY_ATTR_IPV4]); | |
1540 | if (!is_mask && ipv4_key->ipv4_frag > OVS_FRAG_TYPE_MAX) { | |
05da5898 JR |
1541 | OVS_NLERR(log, "IPv4 frag type %d is out of range max %d", |
1542 | ipv4_key->ipv4_frag, OVS_FRAG_TYPE_MAX); | |
e6445719 PS |
1543 | return -EINVAL; |
1544 | } | |
1545 | SW_FLOW_KEY_PUT(match, ip.proto, | |
1546 | ipv4_key->ipv4_proto, is_mask); | |
1547 | SW_FLOW_KEY_PUT(match, ip.tos, | |
1548 | ipv4_key->ipv4_tos, is_mask); | |
1549 | SW_FLOW_KEY_PUT(match, ip.ttl, | |
1550 | ipv4_key->ipv4_ttl, is_mask); | |
1551 | SW_FLOW_KEY_PUT(match, ip.frag, | |
1552 | ipv4_key->ipv4_frag, is_mask); | |
1553 | SW_FLOW_KEY_PUT(match, ipv4.addr.src, | |
1554 | ipv4_key->ipv4_src, is_mask); | |
1555 | SW_FLOW_KEY_PUT(match, ipv4.addr.dst, | |
1556 | ipv4_key->ipv4_dst, is_mask); | |
1557 | attrs &= ~(1 << OVS_KEY_ATTR_IPV4); | |
1558 | } | |
1559 | ||
1560 | if (attrs & (1 << OVS_KEY_ATTR_IPV6)) { | |
1561 | const struct ovs_key_ipv6 *ipv6_key; | |
1562 | ||
1563 | ipv6_key = nla_data(a[OVS_KEY_ATTR_IPV6]); | |
1564 | if (!is_mask && ipv6_key->ipv6_frag > OVS_FRAG_TYPE_MAX) { | |
05da5898 JR |
1565 | OVS_NLERR(log, "IPv6 frag type %d is out of range max %d", |
1566 | ipv6_key->ipv6_frag, OVS_FRAG_TYPE_MAX); | |
e6445719 PS |
1567 | return -EINVAL; |
1568 | } | |
fecaef85 | 1569 | |
d3052bb5 | 1570 | if (!is_mask && ipv6_key->ipv6_label & htonl(0xFFF00000)) { |
0ed80da5 | 1571 | OVS_NLERR(log, "IPv6 flow label %x is out of range (max=%x)", |
fecaef85 JR |
1572 | ntohl(ipv6_key->ipv6_label), (1 << 20) - 1); |
1573 | return -EINVAL; | |
1574 | } | |
1575 | ||
e6445719 PS |
1576 | SW_FLOW_KEY_PUT(match, ipv6.label, |
1577 | ipv6_key->ipv6_label, is_mask); | |
1578 | SW_FLOW_KEY_PUT(match, ip.proto, | |
1579 | ipv6_key->ipv6_proto, is_mask); | |
1580 | SW_FLOW_KEY_PUT(match, ip.tos, | |
1581 | ipv6_key->ipv6_tclass, is_mask); | |
1582 | SW_FLOW_KEY_PUT(match, ip.ttl, | |
1583 | ipv6_key->ipv6_hlimit, is_mask); | |
1584 | SW_FLOW_KEY_PUT(match, ip.frag, | |
1585 | ipv6_key->ipv6_frag, is_mask); | |
1586 | SW_FLOW_KEY_MEMCPY(match, ipv6.addr.src, | |
1587 | ipv6_key->ipv6_src, | |
1588 | sizeof(match->key->ipv6.addr.src), | |
1589 | is_mask); | |
1590 | SW_FLOW_KEY_MEMCPY(match, ipv6.addr.dst, | |
1591 | ipv6_key->ipv6_dst, | |
1592 | sizeof(match->key->ipv6.addr.dst), | |
1593 | is_mask); | |
1594 | ||
1595 | attrs &= ~(1 << OVS_KEY_ATTR_IPV6); | |
1596 | } | |
1597 | ||
1598 | if (attrs & (1 << OVS_KEY_ATTR_ARP)) { | |
1599 | const struct ovs_key_arp *arp_key; | |
1600 | ||
1601 | arp_key = nla_data(a[OVS_KEY_ATTR_ARP]); | |
1602 | if (!is_mask && (arp_key->arp_op & htons(0xff00))) { | |
05da5898 | 1603 | OVS_NLERR(log, "Unknown ARP opcode (opcode=%d).", |
e6445719 PS |
1604 | arp_key->arp_op); |
1605 | return -EINVAL; | |
1606 | } | |
1607 | ||
1608 | SW_FLOW_KEY_PUT(match, ipv4.addr.src, | |
1609 | arp_key->arp_sip, is_mask); | |
1610 | SW_FLOW_KEY_PUT(match, ipv4.addr.dst, | |
1611 | arp_key->arp_tip, is_mask); | |
1612 | SW_FLOW_KEY_PUT(match, ip.proto, | |
1613 | ntohs(arp_key->arp_op), is_mask); | |
1614 | SW_FLOW_KEY_MEMCPY(match, ipv4.arp.sha, | |
1615 | arp_key->arp_sha, ETH_ALEN, is_mask); | |
1616 | SW_FLOW_KEY_MEMCPY(match, ipv4.arp.tha, | |
1617 | arp_key->arp_tha, ETH_ALEN, is_mask); | |
1618 | ||
1619 | attrs &= ~(1 << OVS_KEY_ATTR_ARP); | |
1620 | } | |
1621 | ||
b2d0f5d5 YY |
1622 | if (attrs & (1 << OVS_KEY_ATTR_NSH)) { |
1623 | if (nsh_key_put_from_nlattr(a[OVS_KEY_ATTR_NSH], match, | |
1624 | is_mask, false, log) < 0) | |
1625 | return -EINVAL; | |
1626 | attrs &= ~(1 << OVS_KEY_ATTR_NSH); | |
1627 | } | |
1628 | ||
25cd9ba0 SH |
1629 | if (attrs & (1 << OVS_KEY_ATTR_MPLS)) { |
1630 | const struct ovs_key_mpls *mpls_key; | |
1631 | ||
1632 | mpls_key = nla_data(a[OVS_KEY_ATTR_MPLS]); | |
1633 | SW_FLOW_KEY_PUT(match, mpls.top_lse, | |
1634 | mpls_key->mpls_lse, is_mask); | |
1635 | ||
1636 | attrs &= ~(1 << OVS_KEY_ATTR_MPLS); | |
1637 | } | |
1638 | ||
e6445719 PS |
1639 | if (attrs & (1 << OVS_KEY_ATTR_TCP)) { |
1640 | const struct ovs_key_tcp *tcp_key; | |
1641 | ||
1642 | tcp_key = nla_data(a[OVS_KEY_ATTR_TCP]); | |
1139e241 JR |
1643 | SW_FLOW_KEY_PUT(match, tp.src, tcp_key->tcp_src, is_mask); |
1644 | SW_FLOW_KEY_PUT(match, tp.dst, tcp_key->tcp_dst, is_mask); | |
e6445719 PS |
1645 | attrs &= ~(1 << OVS_KEY_ATTR_TCP); |
1646 | } | |
1647 | ||
5eb26b15 | 1648 | if (attrs & (1 << OVS_KEY_ATTR_TCP_FLAGS)) { |
1b760fb9 JS |
1649 | SW_FLOW_KEY_PUT(match, tp.flags, |
1650 | nla_get_be16(a[OVS_KEY_ATTR_TCP_FLAGS]), | |
1651 | is_mask); | |
5eb26b15 JR |
1652 | attrs &= ~(1 << OVS_KEY_ATTR_TCP_FLAGS); |
1653 | } | |
1654 | ||
e6445719 PS |
1655 | if (attrs & (1 << OVS_KEY_ATTR_UDP)) { |
1656 | const struct ovs_key_udp *udp_key; | |
1657 | ||
1658 | udp_key = nla_data(a[OVS_KEY_ATTR_UDP]); | |
1139e241 JR |
1659 | SW_FLOW_KEY_PUT(match, tp.src, udp_key->udp_src, is_mask); |
1660 | SW_FLOW_KEY_PUT(match, tp.dst, udp_key->udp_dst, is_mask); | |
e6445719 PS |
1661 | attrs &= ~(1 << OVS_KEY_ATTR_UDP); |
1662 | } | |
1663 | ||
1664 | if (attrs & (1 << OVS_KEY_ATTR_SCTP)) { | |
1665 | const struct ovs_key_sctp *sctp_key; | |
1666 | ||
1667 | sctp_key = nla_data(a[OVS_KEY_ATTR_SCTP]); | |
1139e241 JR |
1668 | SW_FLOW_KEY_PUT(match, tp.src, sctp_key->sctp_src, is_mask); |
1669 | SW_FLOW_KEY_PUT(match, tp.dst, sctp_key->sctp_dst, is_mask); | |
e6445719 PS |
1670 | attrs &= ~(1 << OVS_KEY_ATTR_SCTP); |
1671 | } | |
1672 | ||
1673 | if (attrs & (1 << OVS_KEY_ATTR_ICMP)) { | |
1674 | const struct ovs_key_icmp *icmp_key; | |
1675 | ||
1676 | icmp_key = nla_data(a[OVS_KEY_ATTR_ICMP]); | |
1139e241 | 1677 | SW_FLOW_KEY_PUT(match, tp.src, |
e6445719 | 1678 | htons(icmp_key->icmp_type), is_mask); |
1139e241 | 1679 | SW_FLOW_KEY_PUT(match, tp.dst, |
e6445719 PS |
1680 | htons(icmp_key->icmp_code), is_mask); |
1681 | attrs &= ~(1 << OVS_KEY_ATTR_ICMP); | |
1682 | } | |
1683 | ||
1684 | if (attrs & (1 << OVS_KEY_ATTR_ICMPV6)) { | |
1685 | const struct ovs_key_icmpv6 *icmpv6_key; | |
1686 | ||
1687 | icmpv6_key = nla_data(a[OVS_KEY_ATTR_ICMPV6]); | |
1139e241 | 1688 | SW_FLOW_KEY_PUT(match, tp.src, |
e6445719 | 1689 | htons(icmpv6_key->icmpv6_type), is_mask); |
1139e241 | 1690 | SW_FLOW_KEY_PUT(match, tp.dst, |
e6445719 PS |
1691 | htons(icmpv6_key->icmpv6_code), is_mask); |
1692 | attrs &= ~(1 << OVS_KEY_ATTR_ICMPV6); | |
1693 | } | |
1694 | ||
1695 | if (attrs & (1 << OVS_KEY_ATTR_ND)) { | |
1696 | const struct ovs_key_nd *nd_key; | |
1697 | ||
1698 | nd_key = nla_data(a[OVS_KEY_ATTR_ND]); | |
1699 | SW_FLOW_KEY_MEMCPY(match, ipv6.nd.target, | |
1700 | nd_key->nd_target, | |
1701 | sizeof(match->key->ipv6.nd.target), | |
1702 | is_mask); | |
1703 | SW_FLOW_KEY_MEMCPY(match, ipv6.nd.sll, | |
1704 | nd_key->nd_sll, ETH_ALEN, is_mask); | |
1705 | SW_FLOW_KEY_MEMCPY(match, ipv6.nd.tll, | |
1706 | nd_key->nd_tll, ETH_ALEN, is_mask); | |
1707 | attrs &= ~(1 << OVS_KEY_ATTR_ND); | |
1708 | } | |
1709 | ||
426cda5c | 1710 | if (attrs != 0) { |
05da5898 | 1711 | OVS_NLERR(log, "Unknown key attributes %llx", |
426cda5c | 1712 | (unsigned long long)attrs); |
e6445719 | 1713 | return -EINVAL; |
426cda5c | 1714 | } |
e6445719 PS |
1715 | |
1716 | return 0; | |
1717 | } | |
1718 | ||
81bfe3c3 TG |
1719 | static void nlattr_set(struct nlattr *attr, u8 val, |
1720 | const struct ovs_len_tbl *tbl) | |
e6445719 | 1721 | { |
f47de068 PS |
1722 | struct nlattr *nla; |
1723 | int rem; | |
e6445719 | 1724 | |
f47de068 PS |
1725 | /* The nlattr stream should already have been validated */ |
1726 | nla_for_each_nested(nla, attr, rem) { | |
72f17baf SB |
1727 | if (tbl[nla_type(nla)].len == OVS_ATTR_NESTED) |
1728 | nlattr_set(nla, val, tbl[nla_type(nla)].next ? : tbl); | |
1729 | else | |
f47de068 | 1730 | memset(nla_data(nla), val, nla_len(nla)); |
9e384715 JS |
1731 | |
1732 | if (nla_type(nla) == OVS_KEY_ATTR_CT_STATE) | |
1733 | *(u32 *)nla_data(nla) &= CT_SUPPORTED_MASK; | |
f47de068 PS |
1734 | } |
1735 | } | |
1736 | ||
1737 | static void mask_set_nlattr(struct nlattr *attr, u8 val) | |
1738 | { | |
81bfe3c3 | 1739 | nlattr_set(attr, val, ovs_key_lens); |
e6445719 PS |
1740 | } |
1741 | ||
1742 | /** | |
1743 | * ovs_nla_get_match - parses Netlink attributes into a flow key and | |
1744 | * mask. In case the 'mask' is NULL, the flow is treated as exact match | |
1745 | * flow. Otherwise, it is treated as a wildcarded flow, except the mask | |
1746 | * does not include any don't care bit. | |
c2ac6673 | 1747 | * @net: Used to determine per-namespace field support. |
e6445719 PS |
1748 | * @match: receives the extracted flow match information. |
1749 | * @key: Netlink attribute holding nested %OVS_KEY_ATTR_* Netlink attribute | |
1750 | * sequence. The fields should of the packet that triggered the creation | |
1751 | * of this flow. | |
1752 | * @mask: Optional. Netlink attribute holding nested %OVS_KEY_ATTR_* Netlink | |
1753 | * attribute specifies the mask field of the wildcarded flow. | |
05da5898 JR |
1754 | * @log: Boolean to allow kernel error logging. Normally true, but when |
1755 | * probing for feature compatibility this should be passed in as false to | |
1756 | * suppress unnecessary error logging. | |
e6445719 | 1757 | */ |
c2ac6673 | 1758 | int ovs_nla_get_match(struct net *net, struct sw_flow_match *match, |
a85311bf | 1759 | const struct nlattr *nla_key, |
05da5898 JR |
1760 | const struct nlattr *nla_mask, |
1761 | bool log) | |
e6445719 PS |
1762 | { |
1763 | const struct nlattr *a[OVS_KEY_ATTR_MAX + 1]; | |
f47de068 | 1764 | struct nlattr *newmask = NULL; |
e6445719 PS |
1765 | u64 key_attrs = 0; |
1766 | u64 mask_attrs = 0; | |
e6445719 PS |
1767 | int err; |
1768 | ||
05da5898 | 1769 | err = parse_flow_nlattrs(nla_key, a, &key_attrs, log); |
e6445719 PS |
1770 | if (err) |
1771 | return err; | |
1772 | ||
018c1dda EG |
1773 | err = parse_vlan_from_nlattrs(match, &key_attrs, a, false, log); |
1774 | if (err) | |
1775 | return err; | |
e6445719 | 1776 | |
c2ac6673 | 1777 | err = ovs_key_from_nlattrs(net, match, key_attrs, a, false, log); |
e6445719 PS |
1778 | if (err) |
1779 | return err; | |
1780 | ||
a85311bf PS |
1781 | if (match->mask) { |
1782 | if (!nla_mask) { | |
1783 | /* Create an exact match mask. We need to set to 0xff | |
1784 | * all the 'match->mask' fields that have been touched | |
1785 | * in 'match->key'. We cannot simply memset | |
1786 | * 'match->mask', because padding bytes and fields not | |
1787 | * specified in 'match->key' should be left to 0. | |
1788 | * Instead, we use a stream of netlink attributes, | |
1789 | * copied from 'key' and set to 0xff. | |
1790 | * ovs_key_from_nlattrs() will take care of filling | |
1791 | * 'match->mask' appropriately. | |
1792 | */ | |
1793 | newmask = kmemdup(nla_key, | |
1794 | nla_total_size(nla_len(nla_key)), | |
1795 | GFP_KERNEL); | |
1796 | if (!newmask) | |
1797 | return -ENOMEM; | |
f47de068 | 1798 | |
a85311bf | 1799 | mask_set_nlattr(newmask, 0xff); |
f47de068 | 1800 | |
a85311bf PS |
1801 | /* The userspace does not send tunnel attributes that |
1802 | * are 0, but we should not wildcard them nonetheless. | |
1803 | */ | |
00a93bab | 1804 | if (match->key->tun_proto) |
a85311bf PS |
1805 | SW_FLOW_KEY_MEMSET_FIELD(match, tun_key, |
1806 | 0xff, true); | |
f47de068 | 1807 | |
a85311bf PS |
1808 | nla_mask = newmask; |
1809 | } | |
f47de068 | 1810 | |
05da5898 | 1811 | err = parse_flow_mask_nlattrs(nla_mask, a, &mask_attrs, log); |
e6445719 | 1812 | if (err) |
f47de068 | 1813 | goto free_newmask; |
e6445719 | 1814 | |
a85311bf | 1815 | /* Always match on tci. */ |
018c1dda EG |
1816 | SW_FLOW_KEY_PUT(match, eth.vlan.tci, htons(0xffff), true); |
1817 | SW_FLOW_KEY_PUT(match, eth.cvlan.tci, htons(0xffff), true); | |
e6445719 | 1818 | |
018c1dda EG |
1819 | err = parse_vlan_from_nlattrs(match, &mask_attrs, a, true, log); |
1820 | if (err) | |
1821 | goto free_newmask; | |
e6445719 | 1822 | |
c2ac6673 JS |
1823 | err = ovs_key_from_nlattrs(net, match, mask_attrs, a, true, |
1824 | log); | |
e6445719 | 1825 | if (err) |
f47de068 | 1826 | goto free_newmask; |
e6445719 PS |
1827 | } |
1828 | ||
05da5898 | 1829 | if (!match_validate(match, key_attrs, mask_attrs, log)) |
f47de068 | 1830 | err = -EINVAL; |
e6445719 | 1831 | |
f47de068 PS |
1832 | free_newmask: |
1833 | kfree(newmask); | |
1834 | return err; | |
e6445719 PS |
1835 | } |
1836 | ||
74ed7ab9 JS |
1837 | static size_t get_ufid_len(const struct nlattr *attr, bool log) |
1838 | { | |
1839 | size_t len; | |
1840 | ||
1841 | if (!attr) | |
1842 | return 0; | |
1843 | ||
1844 | len = nla_len(attr); | |
1845 | if (len < 1 || len > MAX_UFID_LENGTH) { | |
1846 | OVS_NLERR(log, "ufid size %u bytes exceeds the range (1, %d)", | |
1847 | nla_len(attr), MAX_UFID_LENGTH); | |
1848 | return 0; | |
1849 | } | |
1850 | ||
1851 | return len; | |
1852 | } | |
1853 | ||
1854 | /* Initializes 'flow->ufid', returning true if 'attr' contains a valid UFID, | |
1855 | * or false otherwise. | |
1856 | */ | |
1857 | bool ovs_nla_get_ufid(struct sw_flow_id *sfid, const struct nlattr *attr, | |
1858 | bool log) | |
1859 | { | |
1860 | sfid->ufid_len = get_ufid_len(attr, log); | |
1861 | if (sfid->ufid_len) | |
1862 | memcpy(sfid->ufid, nla_data(attr), sfid->ufid_len); | |
1863 | ||
1864 | return sfid->ufid_len; | |
1865 | } | |
1866 | ||
1867 | int ovs_nla_get_identifier(struct sw_flow_id *sfid, const struct nlattr *ufid, | |
1868 | const struct sw_flow_key *key, bool log) | |
1869 | { | |
1870 | struct sw_flow_key *new_key; | |
1871 | ||
1872 | if (ovs_nla_get_ufid(sfid, ufid, log)) | |
1873 | return 0; | |
1874 | ||
1875 | /* If UFID was not provided, use unmasked key. */ | |
1876 | new_key = kmalloc(sizeof(*new_key), GFP_KERNEL); | |
1877 | if (!new_key) | |
1878 | return -ENOMEM; | |
1879 | memcpy(new_key, key, sizeof(*key)); | |
1880 | sfid->unmasked_key = new_key; | |
1881 | ||
1882 | return 0; | |
1883 | } | |
1884 | ||
1885 | u32 ovs_nla_get_ufid_flags(const struct nlattr *attr) | |
1886 | { | |
1887 | return attr ? nla_get_u32(attr) : 0; | |
1888 | } | |
1889 | ||
e6445719 PS |
1890 | /** |
1891 | * ovs_nla_get_flow_metadata - parses Netlink attributes into a flow key. | |
9dd7f890 JR |
1892 | * @net: Network namespace. |
1893 | * @key: Receives extracted in_port, priority, tun_key, skb_mark and conntrack | |
1894 | * metadata. | |
1895 | * @a: Array of netlink attributes holding parsed %OVS_KEY_ATTR_* Netlink | |
1896 | * attributes. | |
1897 | * @attrs: Bit mask for the netlink attributes included in @a. | |
05da5898 JR |
1898 | * @log: Boolean to allow kernel error logging. Normally true, but when |
1899 | * probing for feature compatibility this should be passed in as false to | |
1900 | * suppress unnecessary error logging. | |
e6445719 PS |
1901 | * |
1902 | * This parses a series of Netlink attributes that form a flow key, which must | |
1903 | * take the same form accepted by flow_from_nlattrs(), but only enough of it to | |
1904 | * get the metadata, that is, the parts of the flow key that cannot be | |
1905 | * extracted from the packet itself. | |
9dd7f890 JR |
1906 | * |
1907 | * This must be called before the packet key fields are filled in 'key'. | |
e6445719 PS |
1908 | */ |
1909 | ||
9dd7f890 JR |
1910 | int ovs_nla_get_flow_metadata(struct net *net, |
1911 | const struct nlattr *a[OVS_KEY_ATTR_MAX + 1], | |
1912 | u64 attrs, struct sw_flow_key *key, bool log) | |
e6445719 | 1913 | { |
83c8df26 | 1914 | struct sw_flow_match match; |
e6445719 PS |
1915 | |
1916 | memset(&match, 0, sizeof(match)); | |
83c8df26 | 1917 | match.key = key; |
e6445719 | 1918 | |
316d4d78 JR |
1919 | key->ct_state = 0; |
1920 | key->ct_zone = 0; | |
1921 | key->ct_orig_proto = 0; | |
7f8a436e | 1922 | memset(&key->ct, 0, sizeof(key->ct)); |
9dd7f890 JR |
1923 | memset(&key->ipv4.ct_orig, 0, sizeof(key->ipv4.ct_orig)); |
1924 | memset(&key->ipv6.ct_orig, 0, sizeof(key->ipv6.ct_orig)); | |
1925 | ||
83c8df26 | 1926 | key->phy.in_port = DP_MAX_PORTS; |
e6445719 | 1927 | |
c2ac6673 | 1928 | return metadata_from_nlattrs(net, &match, &attrs, a, false, log); |
e6445719 PS |
1929 | } |
1930 | ||
018c1dda EG |
1931 | static int ovs_nla_put_vlan(struct sk_buff *skb, const struct vlan_head *vh, |
1932 | bool is_mask) | |
1933 | { | |
1934 | __be16 eth_type = !is_mask ? vh->tpid : htons(0xffff); | |
1935 | ||
1936 | if (nla_put_be16(skb, OVS_KEY_ATTR_ETHERTYPE, eth_type) || | |
1937 | nla_put_be16(skb, OVS_KEY_ATTR_VLAN, vh->tci)) | |
1938 | return -EMSGSIZE; | |
1939 | return 0; | |
1940 | } | |
1941 | ||
b2d0f5d5 YY |
1942 | static int nsh_key_to_nlattr(const struct ovs_key_nsh *nsh, bool is_mask, |
1943 | struct sk_buff *skb) | |
1944 | { | |
1945 | struct nlattr *start; | |
1946 | ||
ae0be8de | 1947 | start = nla_nest_start_noflag(skb, OVS_KEY_ATTR_NSH); |
b2d0f5d5 YY |
1948 | if (!start) |
1949 | return -EMSGSIZE; | |
1950 | ||
1951 | if (nla_put(skb, OVS_NSH_KEY_ATTR_BASE, sizeof(nsh->base), &nsh->base)) | |
1952 | goto nla_put_failure; | |
1953 | ||
1954 | if (is_mask || nsh->base.mdtype == NSH_M_TYPE1) { | |
1955 | if (nla_put(skb, OVS_NSH_KEY_ATTR_MD1, | |
1956 | sizeof(nsh->context), nsh->context)) | |
1957 | goto nla_put_failure; | |
1958 | } | |
1959 | ||
1960 | /* Don't support MD type 2 yet */ | |
1961 | ||
1962 | nla_nest_end(skb, start); | |
1963 | ||
1964 | return 0; | |
1965 | ||
1966 | nla_put_failure: | |
1967 | return -EMSGSIZE; | |
1968 | } | |
1969 | ||
5b4237bb JS |
1970 | static int __ovs_nla_put_key(const struct sw_flow_key *swkey, |
1971 | const struct sw_flow_key *output, bool is_mask, | |
1972 | struct sk_buff *skb) | |
e6445719 PS |
1973 | { |
1974 | struct ovs_key_ethernet *eth_key; | |
018c1dda EG |
1975 | struct nlattr *nla; |
1976 | struct nlattr *encap = NULL; | |
1977 | struct nlattr *in_encap = NULL; | |
e6445719 | 1978 | |
971427f3 AZ |
1979 | if (nla_put_u32(skb, OVS_KEY_ATTR_RECIRC_ID, output->recirc_id)) |
1980 | goto nla_put_failure; | |
1981 | ||
1982 | if (nla_put_u32(skb, OVS_KEY_ATTR_DP_HASH, output->ovs_flow_hash)) | |
1983 | goto nla_put_failure; | |
1984 | ||
e6445719 PS |
1985 | if (nla_put_u32(skb, OVS_KEY_ATTR_PRIORITY, output->phy.priority)) |
1986 | goto nla_put_failure; | |
1987 | ||
00a93bab | 1988 | if ((swkey->tun_proto || is_mask)) { |
d91641d9 | 1989 | const void *opts = NULL; |
f5796684 JG |
1990 | |
1991 | if (output->tun_key.tun_flags & TUNNEL_OPTIONS_PRESENT) | |
d91641d9 | 1992 | opts = TUN_METADATA_OPTS(output, swkey->tun_opts_len); |
f5796684 | 1993 | |
6b26ba3a | 1994 | if (ip_tun_to_nlattr(skb, &output->tun_key, opts, |
18b6f717 | 1995 | swkey->tun_opts_len, swkey->tun_proto, 0)) |
f5796684 JG |
1996 | goto nla_put_failure; |
1997 | } | |
e6445719 PS |
1998 | |
1999 | if (swkey->phy.in_port == DP_MAX_PORTS) { | |
2000 | if (is_mask && (output->phy.in_port == 0xffff)) | |
2001 | if (nla_put_u32(skb, OVS_KEY_ATTR_IN_PORT, 0xffffffff)) | |
2002 | goto nla_put_failure; | |
2003 | } else { | |
2004 | u16 upper_u16; | |
2005 | upper_u16 = !is_mask ? 0 : 0xffff; | |
2006 | ||
2007 | if (nla_put_u32(skb, OVS_KEY_ATTR_IN_PORT, | |
2008 | (upper_u16 << 16) | output->phy.in_port)) | |
2009 | goto nla_put_failure; | |
2010 | } | |
2011 | ||
2012 | if (nla_put_u32(skb, OVS_KEY_ATTR_SKB_MARK, output->phy.skb_mark)) | |
2013 | goto nla_put_failure; | |
2014 | ||
9dd7f890 | 2015 | if (ovs_ct_put_key(swkey, output, skb)) |
7f8a436e JS |
2016 | goto nla_put_failure; |
2017 | ||
0a6410fb JB |
2018 | if (ovs_key_mac_proto(swkey) == MAC_PROTO_ETHERNET) { |
2019 | nla = nla_reserve(skb, OVS_KEY_ATTR_ETHERNET, sizeof(*eth_key)); | |
2020 | if (!nla) | |
e6445719 | 2021 | goto nla_put_failure; |
018c1dda | 2022 | |
0a6410fb JB |
2023 | eth_key = nla_data(nla); |
2024 | ether_addr_copy(eth_key->eth_src, output->eth.src); | |
2025 | ether_addr_copy(eth_key->eth_dst, output->eth.dst); | |
2026 | ||
2027 | if (swkey->eth.vlan.tci || eth_type_vlan(swkey->eth.type)) { | |
2028 | if (ovs_nla_put_vlan(skb, &output->eth.vlan, is_mask)) | |
018c1dda | 2029 | goto nla_put_failure; |
ae0be8de | 2030 | encap = nla_nest_start_noflag(skb, OVS_KEY_ATTR_ENCAP); |
0a6410fb | 2031 | if (!swkey->eth.vlan.tci) |
018c1dda | 2032 | goto unencap; |
0a6410fb JB |
2033 | |
2034 | if (swkey->eth.cvlan.tci || eth_type_vlan(swkey->eth.type)) { | |
2035 | if (ovs_nla_put_vlan(skb, &output->eth.cvlan, is_mask)) | |
2036 | goto nla_put_failure; | |
ae0be8de MK |
2037 | in_encap = nla_nest_start_noflag(skb, |
2038 | OVS_KEY_ATTR_ENCAP); | |
0a6410fb JB |
2039 | if (!swkey->eth.cvlan.tci) |
2040 | goto unencap; | |
2041 | } | |
018c1dda | 2042 | } |
e6445719 | 2043 | |
0a6410fb JB |
2044 | if (swkey->eth.type == htons(ETH_P_802_2)) { |
2045 | /* | |
2046 | * Ethertype 802.2 is represented in the netlink with omitted | |
2047 | * OVS_KEY_ATTR_ETHERTYPE in the flow key attribute, and | |
2048 | * 0xffff in the mask attribute. Ethertype can also | |
2049 | * be wildcarded. | |
2050 | */ | |
2051 | if (is_mask && output->eth.type) | |
2052 | if (nla_put_be16(skb, OVS_KEY_ATTR_ETHERTYPE, | |
2053 | output->eth.type)) | |
2054 | goto nla_put_failure; | |
2055 | goto unencap; | |
2056 | } | |
e6445719 PS |
2057 | } |
2058 | ||
2059 | if (nla_put_be16(skb, OVS_KEY_ATTR_ETHERTYPE, output->eth.type)) | |
2060 | goto nla_put_failure; | |
2061 | ||
018c1dda EG |
2062 | if (eth_type_vlan(swkey->eth.type)) { |
2063 | /* There are 3 VLAN tags, we don't know anything about the rest | |
2064 | * of the packet, so truncate here. | |
2065 | */ | |
2066 | WARN_ON_ONCE(!(encap && in_encap)); | |
2067 | goto unencap; | |
2068 | } | |
2069 | ||
e6445719 PS |
2070 | if (swkey->eth.type == htons(ETH_P_IP)) { |
2071 | struct ovs_key_ipv4 *ipv4_key; | |
2072 | ||
2073 | nla = nla_reserve(skb, OVS_KEY_ATTR_IPV4, sizeof(*ipv4_key)); | |
2074 | if (!nla) | |
2075 | goto nla_put_failure; | |
2076 | ipv4_key = nla_data(nla); | |
2077 | ipv4_key->ipv4_src = output->ipv4.addr.src; | |
2078 | ipv4_key->ipv4_dst = output->ipv4.addr.dst; | |
2079 | ipv4_key->ipv4_proto = output->ip.proto; | |
2080 | ipv4_key->ipv4_tos = output->ip.tos; | |
2081 | ipv4_key->ipv4_ttl = output->ip.ttl; | |
2082 | ipv4_key->ipv4_frag = output->ip.frag; | |
2083 | } else if (swkey->eth.type == htons(ETH_P_IPV6)) { | |
2084 | struct ovs_key_ipv6 *ipv6_key; | |
2085 | ||
2086 | nla = nla_reserve(skb, OVS_KEY_ATTR_IPV6, sizeof(*ipv6_key)); | |
2087 | if (!nla) | |
2088 | goto nla_put_failure; | |
2089 | ipv6_key = nla_data(nla); | |
2090 | memcpy(ipv6_key->ipv6_src, &output->ipv6.addr.src, | |
2091 | sizeof(ipv6_key->ipv6_src)); | |
2092 | memcpy(ipv6_key->ipv6_dst, &output->ipv6.addr.dst, | |
2093 | sizeof(ipv6_key->ipv6_dst)); | |
2094 | ipv6_key->ipv6_label = output->ipv6.label; | |
2095 | ipv6_key->ipv6_proto = output->ip.proto; | |
2096 | ipv6_key->ipv6_tclass = output->ip.tos; | |
2097 | ipv6_key->ipv6_hlimit = output->ip.ttl; | |
2098 | ipv6_key->ipv6_frag = output->ip.frag; | |
b2d0f5d5 YY |
2099 | } else if (swkey->eth.type == htons(ETH_P_NSH)) { |
2100 | if (nsh_key_to_nlattr(&output->nsh, is_mask, skb)) | |
2101 | goto nla_put_failure; | |
e6445719 PS |
2102 | } else if (swkey->eth.type == htons(ETH_P_ARP) || |
2103 | swkey->eth.type == htons(ETH_P_RARP)) { | |
2104 | struct ovs_key_arp *arp_key; | |
2105 | ||
2106 | nla = nla_reserve(skb, OVS_KEY_ATTR_ARP, sizeof(*arp_key)); | |
2107 | if (!nla) | |
2108 | goto nla_put_failure; | |
2109 | arp_key = nla_data(nla); | |
2110 | memset(arp_key, 0, sizeof(struct ovs_key_arp)); | |
2111 | arp_key->arp_sip = output->ipv4.addr.src; | |
2112 | arp_key->arp_tip = output->ipv4.addr.dst; | |
2113 | arp_key->arp_op = htons(output->ip.proto); | |
8c63ff09 JP |
2114 | ether_addr_copy(arp_key->arp_sha, output->ipv4.arp.sha); |
2115 | ether_addr_copy(arp_key->arp_tha, output->ipv4.arp.tha); | |
25cd9ba0 SH |
2116 | } else if (eth_p_mpls(swkey->eth.type)) { |
2117 | struct ovs_key_mpls *mpls_key; | |
2118 | ||
2119 | nla = nla_reserve(skb, OVS_KEY_ATTR_MPLS, sizeof(*mpls_key)); | |
2120 | if (!nla) | |
2121 | goto nla_put_failure; | |
2122 | mpls_key = nla_data(nla); | |
2123 | mpls_key->mpls_lse = output->mpls.top_lse; | |
e6445719 PS |
2124 | } |
2125 | ||
2126 | if ((swkey->eth.type == htons(ETH_P_IP) || | |
2127 | swkey->eth.type == htons(ETH_P_IPV6)) && | |
2128 | swkey->ip.frag != OVS_FRAG_TYPE_LATER) { | |
2129 | ||
2130 | if (swkey->ip.proto == IPPROTO_TCP) { | |
2131 | struct ovs_key_tcp *tcp_key; | |
2132 | ||
2133 | nla = nla_reserve(skb, OVS_KEY_ATTR_TCP, sizeof(*tcp_key)); | |
2134 | if (!nla) | |
2135 | goto nla_put_failure; | |
2136 | tcp_key = nla_data(nla); | |
1139e241 JR |
2137 | tcp_key->tcp_src = output->tp.src; |
2138 | tcp_key->tcp_dst = output->tp.dst; | |
2139 | if (nla_put_be16(skb, OVS_KEY_ATTR_TCP_FLAGS, | |
2140 | output->tp.flags)) | |
2141 | goto nla_put_failure; | |
e6445719 PS |
2142 | } else if (swkey->ip.proto == IPPROTO_UDP) { |
2143 | struct ovs_key_udp *udp_key; | |
2144 | ||
2145 | nla = nla_reserve(skb, OVS_KEY_ATTR_UDP, sizeof(*udp_key)); | |
2146 | if (!nla) | |
2147 | goto nla_put_failure; | |
2148 | udp_key = nla_data(nla); | |
1139e241 JR |
2149 | udp_key->udp_src = output->tp.src; |
2150 | udp_key->udp_dst = output->tp.dst; | |
e6445719 PS |
2151 | } else if (swkey->ip.proto == IPPROTO_SCTP) { |
2152 | struct ovs_key_sctp *sctp_key; | |
2153 | ||
2154 | nla = nla_reserve(skb, OVS_KEY_ATTR_SCTP, sizeof(*sctp_key)); | |
2155 | if (!nla) | |
2156 | goto nla_put_failure; | |
2157 | sctp_key = nla_data(nla); | |
1139e241 JR |
2158 | sctp_key->sctp_src = output->tp.src; |
2159 | sctp_key->sctp_dst = output->tp.dst; | |
e6445719 PS |
2160 | } else if (swkey->eth.type == htons(ETH_P_IP) && |
2161 | swkey->ip.proto == IPPROTO_ICMP) { | |
2162 | struct ovs_key_icmp *icmp_key; | |
2163 | ||
2164 | nla = nla_reserve(skb, OVS_KEY_ATTR_ICMP, sizeof(*icmp_key)); | |
2165 | if (!nla) | |
2166 | goto nla_put_failure; | |
2167 | icmp_key = nla_data(nla); | |
1139e241 JR |
2168 | icmp_key->icmp_type = ntohs(output->tp.src); |
2169 | icmp_key->icmp_code = ntohs(output->tp.dst); | |
e6445719 PS |
2170 | } else if (swkey->eth.type == htons(ETH_P_IPV6) && |
2171 | swkey->ip.proto == IPPROTO_ICMPV6) { | |
2172 | struct ovs_key_icmpv6 *icmpv6_key; | |
2173 | ||
2174 | nla = nla_reserve(skb, OVS_KEY_ATTR_ICMPV6, | |
2175 | sizeof(*icmpv6_key)); | |
2176 | if (!nla) | |
2177 | goto nla_put_failure; | |
2178 | icmpv6_key = nla_data(nla); | |
1139e241 JR |
2179 | icmpv6_key->icmpv6_type = ntohs(output->tp.src); |
2180 | icmpv6_key->icmpv6_code = ntohs(output->tp.dst); | |
e6445719 PS |
2181 | |
2182 | if (icmpv6_key->icmpv6_type == NDISC_NEIGHBOUR_SOLICITATION || | |
2183 | icmpv6_key->icmpv6_type == NDISC_NEIGHBOUR_ADVERTISEMENT) { | |
2184 | struct ovs_key_nd *nd_key; | |
2185 | ||
2186 | nla = nla_reserve(skb, OVS_KEY_ATTR_ND, sizeof(*nd_key)); | |
2187 | if (!nla) | |
2188 | goto nla_put_failure; | |
2189 | nd_key = nla_data(nla); | |
2190 | memcpy(nd_key->nd_target, &output->ipv6.nd.target, | |
2191 | sizeof(nd_key->nd_target)); | |
8c63ff09 JP |
2192 | ether_addr_copy(nd_key->nd_sll, output->ipv6.nd.sll); |
2193 | ether_addr_copy(nd_key->nd_tll, output->ipv6.nd.tll); | |
e6445719 PS |
2194 | } |
2195 | } | |
2196 | } | |
2197 | ||
2198 | unencap: | |
018c1dda EG |
2199 | if (in_encap) |
2200 | nla_nest_end(skb, in_encap); | |
e6445719 PS |
2201 | if (encap) |
2202 | nla_nest_end(skb, encap); | |
2203 | ||
2204 | return 0; | |
2205 | ||
2206 | nla_put_failure: | |
2207 | return -EMSGSIZE; | |
2208 | } | |
2209 | ||
5b4237bb JS |
2210 | int ovs_nla_put_key(const struct sw_flow_key *swkey, |
2211 | const struct sw_flow_key *output, int attr, bool is_mask, | |
2212 | struct sk_buff *skb) | |
2213 | { | |
2214 | int err; | |
2215 | struct nlattr *nla; | |
2216 | ||
ae0be8de | 2217 | nla = nla_nest_start_noflag(skb, attr); |
5b4237bb JS |
2218 | if (!nla) |
2219 | return -EMSGSIZE; | |
2220 | err = __ovs_nla_put_key(swkey, output, is_mask, skb); | |
2221 | if (err) | |
2222 | return err; | |
2223 | nla_nest_end(skb, nla); | |
2224 | ||
2225 | return 0; | |
2226 | } | |
2227 | ||
2228 | /* Called with ovs_mutex or RCU read lock. */ | |
74ed7ab9 JS |
2229 | int ovs_nla_put_identifier(const struct sw_flow *flow, struct sk_buff *skb) |
2230 | { | |
2231 | if (ovs_identifier_is_ufid(&flow->id)) | |
2232 | return nla_put(skb, OVS_FLOW_ATTR_UFID, flow->id.ufid_len, | |
2233 | flow->id.ufid); | |
2234 | ||
2235 | return ovs_nla_put_key(flow->id.unmasked_key, flow->id.unmasked_key, | |
2236 | OVS_FLOW_ATTR_KEY, false, skb); | |
2237 | } | |
2238 | ||
2239 | /* Called with ovs_mutex or RCU read lock. */ | |
2240 | int ovs_nla_put_masked_key(const struct sw_flow *flow, struct sk_buff *skb) | |
5b4237bb | 2241 | { |
26ad0b83 | 2242 | return ovs_nla_put_key(&flow->key, &flow->key, |
5b4237bb JS |
2243 | OVS_FLOW_ATTR_KEY, false, skb); |
2244 | } | |
2245 | ||
2246 | /* Called with ovs_mutex or RCU read lock. */ | |
2247 | int ovs_nla_put_mask(const struct sw_flow *flow, struct sk_buff *skb) | |
2248 | { | |
2249 | return ovs_nla_put_key(&flow->key, &flow->mask->key, | |
2250 | OVS_FLOW_ATTR_MASK, true, skb); | |
2251 | } | |
2252 | ||
e6445719 PS |
2253 | #define MAX_ACTIONS_BUFSIZE (32 * 1024) |
2254 | ||
67c8d22a | 2255 | static struct sw_flow_actions *nla_alloc_flow_actions(int size) |
e6445719 PS |
2256 | { |
2257 | struct sw_flow_actions *sfa; | |
2258 | ||
67c8d22a | 2259 | WARN_ON_ONCE(size > MAX_ACTIONS_BUFSIZE); |
e6445719 PS |
2260 | |
2261 | sfa = kmalloc(sizeof(*sfa) + size, GFP_KERNEL); | |
2262 | if (!sfa) | |
2263 | return ERR_PTR(-ENOMEM); | |
2264 | ||
2265 | sfa->actions_len = 0; | |
2266 | return sfa; | |
2267 | } | |
2268 | ||
34ae932a TG |
2269 | static void ovs_nla_free_set_action(const struct nlattr *a) |
2270 | { | |
2271 | const struct nlattr *ovs_key = nla_data(a); | |
2272 | struct ovs_tunnel_info *ovs_tun; | |
2273 | ||
2274 | switch (nla_type(ovs_key)) { | |
2275 | case OVS_KEY_ATTR_TUNNEL_INFO: | |
2276 | ovs_tun = nla_data(ovs_key); | |
2277 | dst_release((struct dst_entry *)ovs_tun->tun_dst); | |
2278 | break; | |
2279 | } | |
2280 | } | |
2281 | ||
2282 | void ovs_nla_free_flow_actions(struct sw_flow_actions *sf_acts) | |
2283 | { | |
2284 | const struct nlattr *a; | |
2285 | int rem; | |
2286 | ||
2287 | if (!sf_acts) | |
2288 | return; | |
2289 | ||
2290 | nla_for_each_attr(a, sf_acts->actions, sf_acts->actions_len, rem) { | |
2291 | switch (nla_type(a)) { | |
2292 | case OVS_ACTION_ATTR_SET: | |
2293 | ovs_nla_free_set_action(a); | |
2294 | break; | |
7f8a436e JS |
2295 | case OVS_ACTION_ATTR_CT: |
2296 | ovs_ct_free_action(a); | |
2297 | break; | |
34ae932a TG |
2298 | } |
2299 | } | |
2300 | ||
2301 | kfree(sf_acts); | |
2302 | } | |
2303 | ||
2304 | static void __ovs_nla_free_flow_actions(struct rcu_head *head) | |
2305 | { | |
2306 | ovs_nla_free_flow_actions(container_of(head, struct sw_flow_actions, rcu)); | |
2307 | } | |
2308 | ||
e6445719 PS |
2309 | /* Schedules 'sf_acts' to be freed after the next RCU grace period. |
2310 | * The caller must hold rcu_read_lock for this to be sensible. */ | |
34ae932a | 2311 | void ovs_nla_free_flow_actions_rcu(struct sw_flow_actions *sf_acts) |
e6445719 | 2312 | { |
34ae932a | 2313 | call_rcu(&sf_acts->rcu, __ovs_nla_free_flow_actions); |
e6445719 PS |
2314 | } |
2315 | ||
2316 | static struct nlattr *reserve_sfa_size(struct sw_flow_actions **sfa, | |
05da5898 | 2317 | int attr_len, bool log) |
e6445719 PS |
2318 | { |
2319 | ||
2320 | struct sw_flow_actions *acts; | |
2321 | int new_acts_size; | |
f28cd2af | 2322 | size_t req_size = NLA_ALIGN(attr_len); |
e6445719 PS |
2323 | int next_offset = offsetof(struct sw_flow_actions, actions) + |
2324 | (*sfa)->actions_len; | |
2325 | ||
2326 | if (req_size <= (ksize(*sfa) - next_offset)) | |
2327 | goto out; | |
2328 | ||
f28cd2af | 2329 | new_acts_size = max(next_offset + req_size, ksize(*sfa) * 2); |
e6445719 PS |
2330 | |
2331 | if (new_acts_size > MAX_ACTIONS_BUFSIZE) { | |
67c8d22a | 2332 | if ((MAX_ACTIONS_BUFSIZE - next_offset) < req_size) { |
2333 | OVS_NLERR(log, "Flow action size exceeds max %u", | |
2334 | MAX_ACTIONS_BUFSIZE); | |
e6445719 | 2335 | return ERR_PTR(-EMSGSIZE); |
67c8d22a | 2336 | } |
e6445719 PS |
2337 | new_acts_size = MAX_ACTIONS_BUFSIZE; |
2338 | } | |
2339 | ||
67c8d22a | 2340 | acts = nla_alloc_flow_actions(new_acts_size); |
e6445719 PS |
2341 | if (IS_ERR(acts)) |
2342 | return (void *)acts; | |
2343 | ||
2344 | memcpy(acts->actions, (*sfa)->actions, (*sfa)->actions_len); | |
2345 | acts->actions_len = (*sfa)->actions_len; | |
8e2fed1c | 2346 | acts->orig_len = (*sfa)->orig_len; |
e6445719 PS |
2347 | kfree(*sfa); |
2348 | *sfa = acts; | |
2349 | ||
2350 | out: | |
2351 | (*sfa)->actions_len += req_size; | |
2352 | return (struct nlattr *) ((unsigned char *)(*sfa) + next_offset); | |
2353 | } | |
2354 | ||
f0b128c1 | 2355 | static struct nlattr *__add_action(struct sw_flow_actions **sfa, |
05da5898 | 2356 | int attrtype, void *data, int len, bool log) |
e6445719 PS |
2357 | { |
2358 | struct nlattr *a; | |
2359 | ||
05da5898 | 2360 | a = reserve_sfa_size(sfa, nla_attr_size(len), log); |
e6445719 | 2361 | if (IS_ERR(a)) |
f0b128c1 | 2362 | return a; |
e6445719 PS |
2363 | |
2364 | a->nla_type = attrtype; | |
2365 | a->nla_len = nla_attr_size(len); | |
2366 | ||
2367 | if (data) | |
2368 | memcpy(nla_data(a), data, len); | |
2369 | memset((unsigned char *) a + a->nla_len, 0, nla_padlen(len)); | |
2370 | ||
f0b128c1 JG |
2371 | return a; |
2372 | } | |
2373 | ||
7f8a436e JS |
2374 | int ovs_nla_add_action(struct sw_flow_actions **sfa, int attrtype, void *data, |
2375 | int len, bool log) | |
f0b128c1 JG |
2376 | { |
2377 | struct nlattr *a; | |
2378 | ||
05da5898 | 2379 | a = __add_action(sfa, attrtype, data, len, log); |
f0b128c1 | 2380 | |
f35423c1 | 2381 | return PTR_ERR_OR_ZERO(a); |
e6445719 PS |
2382 | } |
2383 | ||
2384 | static inline int add_nested_action_start(struct sw_flow_actions **sfa, | |
05da5898 | 2385 | int attrtype, bool log) |
e6445719 PS |
2386 | { |
2387 | int used = (*sfa)->actions_len; | |
2388 | int err; | |
2389 | ||
7f8a436e | 2390 | err = ovs_nla_add_action(sfa, attrtype, NULL, 0, log); |
e6445719 PS |
2391 | if (err) |
2392 | return err; | |
2393 | ||
2394 | return used; | |
2395 | } | |
2396 | ||
2397 | static inline void add_nested_action_end(struct sw_flow_actions *sfa, | |
2398 | int st_offset) | |
2399 | { | |
2400 | struct nlattr *a = (struct nlattr *) ((unsigned char *)sfa->actions + | |
2401 | st_offset); | |
2402 | ||
2403 | a->nla_len = sfa->actions_len - st_offset; | |
2404 | } | |
2405 | ||
7f8a436e | 2406 | static int __ovs_nla_copy_actions(struct net *net, const struct nlattr *attr, |
25cd9ba0 | 2407 | const struct sw_flow_key *key, |
798c1661 | 2408 | struct sw_flow_actions **sfa, |
05da5898 | 2409 | __be16 eth_type, __be16 vlan_tci, bool log); |
25cd9ba0 | 2410 | |
7f8a436e | 2411 | static int validate_and_copy_sample(struct net *net, const struct nlattr *attr, |
798c1661 | 2412 | const struct sw_flow_key *key, |
25cd9ba0 | 2413 | struct sw_flow_actions **sfa, |
798c1661 | 2414 | __be16 eth_type, __be16 vlan_tci, |
2415 | bool log, bool last) | |
e6445719 PS |
2416 | { |
2417 | const struct nlattr *attrs[OVS_SAMPLE_ATTR_MAX + 1]; | |
2418 | const struct nlattr *probability, *actions; | |
2419 | const struct nlattr *a; | |
798c1661 | 2420 | int rem, start, err; |
2421 | struct sample_arg arg; | |
e6445719 PS |
2422 | |
2423 | memset(attrs, 0, sizeof(attrs)); | |
2424 | nla_for_each_nested(a, attr, rem) { | |
2425 | int type = nla_type(a); | |
2426 | if (!type || type > OVS_SAMPLE_ATTR_MAX || attrs[type]) | |
2427 | return -EINVAL; | |
2428 | attrs[type] = a; | |
2429 | } | |
2430 | if (rem) | |
2431 | return -EINVAL; | |
2432 | ||
2433 | probability = attrs[OVS_SAMPLE_ATTR_PROBABILITY]; | |
2434 | if (!probability || nla_len(probability) != sizeof(u32)) | |
2435 | return -EINVAL; | |
2436 | ||
2437 | actions = attrs[OVS_SAMPLE_ATTR_ACTIONS]; | |
2438 | if (!actions || (nla_len(actions) && nla_len(actions) < NLA_HDRLEN)) | |
2439 | return -EINVAL; | |
2440 | ||
2441 | /* validation done, copy sample action. */ | |
05da5898 | 2442 | start = add_nested_action_start(sfa, OVS_ACTION_ATTR_SAMPLE, log); |
e6445719 PS |
2443 | if (start < 0) |
2444 | return start; | |
798c1661 | 2445 | |
2446 | /* When both skb and flow may be changed, put the sample | |
2447 | * into a deferred fifo. On the other hand, if only skb | |
2448 | * may be modified, the actions can be executed in place. | |
2449 | * | |
2450 | * Do this analysis at the flow installation time. | |
2451 | * Set 'clone_action->exec' to true if the actions can be | |
2452 | * executed without being deferred. | |
2453 | * | |
2454 | * If the sample is the last action, it can always be excuted | |
2455 | * rather than deferred. | |
2456 | */ | |
2457 | arg.exec = last || !actions_may_change_flow(actions); | |
2458 | arg.probability = nla_get_u32(probability); | |
2459 | ||
2460 | err = ovs_nla_add_action(sfa, OVS_SAMPLE_ATTR_ARG, &arg, sizeof(arg), | |
2461 | log); | |
e6445719 PS |
2462 | if (err) |
2463 | return err; | |
e6445719 | 2464 | |
798c1661 | 2465 | err = __ovs_nla_copy_actions(net, actions, key, sfa, |
05da5898 | 2466 | eth_type, vlan_tci, log); |
798c1661 | 2467 | |
e6445719 PS |
2468 | if (err) |
2469 | return err; | |
2470 | ||
e6445719 PS |
2471 | add_nested_action_end(*sfa, start); |
2472 | ||
2473 | return 0; | |
2474 | } | |
2475 | ||
b2335040 YS |
2476 | static int validate_and_copy_clone(struct net *net, |
2477 | const struct nlattr *attr, | |
2478 | const struct sw_flow_key *key, | |
2479 | struct sw_flow_actions **sfa, | |
2480 | __be16 eth_type, __be16 vlan_tci, | |
2481 | bool log, bool last) | |
2482 | { | |
2483 | int start, err; | |
2484 | u32 exec; | |
2485 | ||
2486 | if (nla_len(attr) && nla_len(attr) < NLA_HDRLEN) | |
2487 | return -EINVAL; | |
2488 | ||
2489 | start = add_nested_action_start(sfa, OVS_ACTION_ATTR_CLONE, log); | |
2490 | if (start < 0) | |
2491 | return start; | |
2492 | ||
2493 | exec = last || !actions_may_change_flow(attr); | |
2494 | ||
2495 | err = ovs_nla_add_action(sfa, OVS_CLONE_ATTR_EXEC, &exec, | |
2496 | sizeof(exec), log); | |
2497 | if (err) | |
2498 | return err; | |
2499 | ||
2500 | err = __ovs_nla_copy_actions(net, attr, key, sfa, | |
2501 | eth_type, vlan_tci, log); | |
2502 | if (err) | |
2503 | return err; | |
2504 | ||
2505 | add_nested_action_end(*sfa, start); | |
2506 | ||
2507 | return 0; | |
2508 | } | |
2509 | ||
e6445719 PS |
2510 | void ovs_match_init(struct sw_flow_match *match, |
2511 | struct sw_flow_key *key, | |
2279994d | 2512 | bool reset_key, |
e6445719 PS |
2513 | struct sw_flow_mask *mask) |
2514 | { | |
2515 | memset(match, 0, sizeof(*match)); | |
2516 | match->key = key; | |
2517 | match->mask = mask; | |
2518 | ||
2279994d | 2519 | if (reset_key) |
2520 | memset(key, 0, sizeof(*key)); | |
e6445719 PS |
2521 | |
2522 | if (mask) { | |
2523 | memset(&mask->key, 0, sizeof(mask->key)); | |
2524 | mask->range.start = mask->range.end = 0; | |
2525 | } | |
2526 | } | |
2527 | ||
d91641d9 TG |
2528 | static int validate_geneve_opts(struct sw_flow_key *key) |
2529 | { | |
2530 | struct geneve_opt *option; | |
2531 | int opts_len = key->tun_opts_len; | |
2532 | bool crit_opt = false; | |
2533 | ||
2534 | option = (struct geneve_opt *)TUN_METADATA_OPTS(key, key->tun_opts_len); | |
2535 | while (opts_len > 0) { | |
2536 | int len; | |
2537 | ||
2538 | if (opts_len < sizeof(*option)) | |
2539 | return -EINVAL; | |
2540 | ||
2541 | len = sizeof(*option) + option->length * 4; | |
2542 | if (len > opts_len) | |
2543 | return -EINVAL; | |
2544 | ||
2545 | crit_opt |= !!(option->type & GENEVE_CRIT_OPT_TYPE); | |
2546 | ||
2547 | option = (struct geneve_opt *)((u8 *)option + len); | |
2548 | opts_len -= len; | |
89290b83 | 2549 | } |
d91641d9 TG |
2550 | |
2551 | key->tun_key.tun_flags |= crit_opt ? TUNNEL_CRIT_OPT : 0; | |
2552 | ||
2553 | return 0; | |
2554 | } | |
2555 | ||
e6445719 | 2556 | static int validate_and_copy_set_tun(const struct nlattr *attr, |
05da5898 | 2557 | struct sw_flow_actions **sfa, bool log) |
e6445719 PS |
2558 | { |
2559 | struct sw_flow_match match; | |
2560 | struct sw_flow_key key; | |
34ae932a | 2561 | struct metadata_dst *tun_dst; |
1d8fff90 | 2562 | struct ip_tunnel_info *tun_info; |
34ae932a | 2563 | struct ovs_tunnel_info *ovs_tun; |
f0b128c1 | 2564 | struct nlattr *a; |
13101602 | 2565 | int err = 0, start, opts_type; |
256c87c1 | 2566 | __be16 dst_opt_type; |
e6445719 | 2567 | |
256c87c1 | 2568 | dst_opt_type = 0; |
2279994d | 2569 | ovs_match_init(&match, &key, true, NULL); |
6b26ba3a | 2570 | opts_type = ip_tun_from_nlattr(nla_data(attr), &match, false, log); |
1dd144cf TG |
2571 | if (opts_type < 0) |
2572 | return opts_type; | |
e6445719 | 2573 | |
f5796684 | 2574 | if (key.tun_opts_len) { |
1dd144cf TG |
2575 | switch (opts_type) { |
2576 | case OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS: | |
2577 | err = validate_geneve_opts(&key); | |
2578 | if (err < 0) | |
2579 | return err; | |
256c87c1 | 2580 | dst_opt_type = TUNNEL_GENEVE_OPT; |
1dd144cf TG |
2581 | break; |
2582 | case OVS_TUNNEL_KEY_ATTR_VXLAN_OPTS: | |
256c87c1 | 2583 | dst_opt_type = TUNNEL_VXLAN_OPT; |
1dd144cf | 2584 | break; |
fc1372f8 | 2585 | case OVS_TUNNEL_KEY_ATTR_ERSPAN_OPTS: |
256c87c1 | 2586 | dst_opt_type = TUNNEL_ERSPAN_OPT; |
fc1372f8 | 2587 | break; |
1dd144cf | 2588 | } |
89290b83 | 2589 | } |
f5796684 | 2590 | |
05da5898 | 2591 | start = add_nested_action_start(sfa, OVS_ACTION_ATTR_SET, log); |
e6445719 PS |
2592 | if (start < 0) |
2593 | return start; | |
2594 | ||
3fcece12 JK |
2595 | tun_dst = metadata_dst_alloc(key.tun_opts_len, METADATA_IP_TUNNEL, |
2596 | GFP_KERNEL); | |
2597 | ||
34ae932a TG |
2598 | if (!tun_dst) |
2599 | return -ENOMEM; | |
2600 | ||
d71785ff PA |
2601 | err = dst_cache_init(&tun_dst->u.tun_info.dst_cache, GFP_KERNEL); |
2602 | if (err) { | |
2603 | dst_release((struct dst_entry *)tun_dst); | |
2604 | return err; | |
2605 | } | |
2606 | ||
f0b128c1 | 2607 | a = __add_action(sfa, OVS_KEY_ATTR_TUNNEL_INFO, NULL, |
34ae932a TG |
2608 | sizeof(*ovs_tun), log); |
2609 | if (IS_ERR(a)) { | |
2610 | dst_release((struct dst_entry *)tun_dst); | |
f0b128c1 | 2611 | return PTR_ERR(a); |
34ae932a TG |
2612 | } |
2613 | ||
2614 | ovs_tun = nla_data(a); | |
2615 | ovs_tun->tun_dst = tun_dst; | |
f0b128c1 | 2616 | |
34ae932a TG |
2617 | tun_info = &tun_dst->u.tun_info; |
2618 | tun_info->mode = IP_TUNNEL_INFO_TX; | |
00a93bab JB |
2619 | if (key.tun_proto == AF_INET6) |
2620 | tun_info->mode |= IP_TUNNEL_INFO_IPV6; | |
18b6f717 | 2621 | else if (key.tun_proto == AF_INET && key.tun_key.u.ipv4.dst == 0) |
2622 | tun_info->mode |= IP_TUNNEL_INFO_BRIDGE; | |
1d8fff90 | 2623 | tun_info->key = key.tun_key; |
f0b128c1 | 2624 | |
4c222798 PS |
2625 | /* We need to store the options in the action itself since |
2626 | * everything else will go away after flow setup. We can append | |
2627 | * it to tun_info and then point there. | |
2628 | */ | |
2629 | ip_tunnel_info_opts_set(tun_info, | |
2630 | TUN_METADATA_OPTS(&key, key.tun_opts_len), | |
256c87c1 | 2631 | key.tun_opts_len, dst_opt_type); |
e6445719 PS |
2632 | add_nested_action_end(*sfa, start); |
2633 | ||
2634 | return err; | |
2635 | } | |
2636 | ||
b2d0f5d5 YY |
2637 | static bool validate_nsh(const struct nlattr *attr, bool is_mask, |
2638 | bool is_push_nsh, bool log) | |
2639 | { | |
2640 | struct sw_flow_match match; | |
2641 | struct sw_flow_key key; | |
2642 | int ret = 0; | |
2643 | ||
2644 | ovs_match_init(&match, &key, true, NULL); | |
2645 | ret = nsh_key_put_from_nlattr(attr, &match, is_mask, | |
2646 | is_push_nsh, log); | |
2647 | return !ret; | |
2648 | } | |
2649 | ||
83d2b9ba JR |
2650 | /* Return false if there are any non-masked bits set. |
2651 | * Mask follows data immediately, before any netlink padding. | |
2652 | */ | |
2653 | static bool validate_masked(u8 *data, int len) | |
2654 | { | |
2655 | u8 *mask = data + len; | |
2656 | ||
2657 | while (len--) | |
2658 | if (*data++ & ~*mask++) | |
2659 | return false; | |
2660 | ||
2661 | return true; | |
2662 | } | |
2663 | ||
e6445719 PS |
2664 | static int validate_set(const struct nlattr *a, |
2665 | const struct sw_flow_key *flow_key, | |
0a6410fb JB |
2666 | struct sw_flow_actions **sfa, bool *skip_copy, |
2667 | u8 mac_proto, __be16 eth_type, bool masked, bool log) | |
e6445719 PS |
2668 | { |
2669 | const struct nlattr *ovs_key = nla_data(a); | |
2670 | int key_type = nla_type(ovs_key); | |
83d2b9ba | 2671 | size_t key_len; |
e6445719 PS |
2672 | |
2673 | /* There can be only one key in a action */ | |
2674 | if (nla_total_size(nla_len(ovs_key)) != nla_len(a)) | |
2675 | return -EINVAL; | |
2676 | ||
83d2b9ba JR |
2677 | key_len = nla_len(ovs_key); |
2678 | if (masked) | |
2679 | key_len /= 2; | |
2680 | ||
e6445719 | 2681 | if (key_type > OVS_KEY_ATTR_MAX || |
982b5270 | 2682 | !check_attr_len(key_len, ovs_key_lens[key_type].len)) |
e6445719 PS |
2683 | return -EINVAL; |
2684 | ||
83d2b9ba JR |
2685 | if (masked && !validate_masked(nla_data(ovs_key), key_len)) |
2686 | return -EINVAL; | |
2687 | ||
e6445719 PS |
2688 | switch (key_type) { |
2689 | const struct ovs_key_ipv4 *ipv4_key; | |
2690 | const struct ovs_key_ipv6 *ipv6_key; | |
2691 | int err; | |
2692 | ||
2693 | case OVS_KEY_ATTR_PRIORITY: | |
2694 | case OVS_KEY_ATTR_SKB_MARK: | |
182e3042 | 2695 | case OVS_KEY_ATTR_CT_MARK: |
33db4125 | 2696 | case OVS_KEY_ATTR_CT_LABELS: |
e6445719 PS |
2697 | break; |
2698 | ||
0a6410fb JB |
2699 | case OVS_KEY_ATTR_ETHERNET: |
2700 | if (mac_proto != MAC_PROTO_ETHERNET) | |
2701 | return -EINVAL; | |
87e159c5 | 2702 | break; |
0a6410fb | 2703 | |
e6445719 | 2704 | case OVS_KEY_ATTR_TUNNEL: |
83d2b9ba JR |
2705 | if (masked) |
2706 | return -EINVAL; /* Masked tunnel set not supported. */ | |
2707 | ||
2708 | *skip_copy = true; | |
05da5898 | 2709 | err = validate_and_copy_set_tun(a, sfa, log); |
e6445719 PS |
2710 | if (err) |
2711 | return err; | |
2712 | break; | |
2713 | ||
2714 | case OVS_KEY_ATTR_IPV4: | |
25cd9ba0 | 2715 | if (eth_type != htons(ETH_P_IP)) |
e6445719 PS |
2716 | return -EINVAL; |
2717 | ||
e6445719 | 2718 | ipv4_key = nla_data(ovs_key); |
e6445719 | 2719 | |
83d2b9ba JR |
2720 | if (masked) { |
2721 | const struct ovs_key_ipv4 *mask = ipv4_key + 1; | |
e6445719 | 2722 | |
83d2b9ba JR |
2723 | /* Non-writeable fields. */ |
2724 | if (mask->ipv4_proto || mask->ipv4_frag) | |
2725 | return -EINVAL; | |
2726 | } else { | |
2727 | if (ipv4_key->ipv4_proto != flow_key->ip.proto) | |
2728 | return -EINVAL; | |
2729 | ||
2730 | if (ipv4_key->ipv4_frag != flow_key->ip.frag) | |
2731 | return -EINVAL; | |
2732 | } | |
e6445719 PS |
2733 | break; |
2734 | ||
2735 | case OVS_KEY_ATTR_IPV6: | |
25cd9ba0 | 2736 | if (eth_type != htons(ETH_P_IPV6)) |
e6445719 PS |
2737 | return -EINVAL; |
2738 | ||
e6445719 | 2739 | ipv6_key = nla_data(ovs_key); |
e6445719 | 2740 | |
83d2b9ba JR |
2741 | if (masked) { |
2742 | const struct ovs_key_ipv6 *mask = ipv6_key + 1; | |
2743 | ||
2744 | /* Non-writeable fields. */ | |
2745 | if (mask->ipv6_proto || mask->ipv6_frag) | |
2746 | return -EINVAL; | |
2747 | ||
2748 | /* Invalid bits in the flow label mask? */ | |
2749 | if (ntohl(mask->ipv6_label) & 0xFFF00000) | |
2750 | return -EINVAL; | |
2751 | } else { | |
2752 | if (ipv6_key->ipv6_proto != flow_key->ip.proto) | |
2753 | return -EINVAL; | |
e6445719 | 2754 | |
83d2b9ba JR |
2755 | if (ipv6_key->ipv6_frag != flow_key->ip.frag) |
2756 | return -EINVAL; | |
2757 | } | |
e6445719 PS |
2758 | if (ntohl(ipv6_key->ipv6_label) & 0xFFF00000) |
2759 | return -EINVAL; | |
2760 | ||
2761 | break; | |
2762 | ||
2763 | case OVS_KEY_ATTR_TCP: | |
83d2b9ba JR |
2764 | if ((eth_type != htons(ETH_P_IP) && |
2765 | eth_type != htons(ETH_P_IPV6)) || | |
2766 | flow_key->ip.proto != IPPROTO_TCP) | |
e6445719 PS |
2767 | return -EINVAL; |
2768 | ||
83d2b9ba | 2769 | break; |
e6445719 PS |
2770 | |
2771 | case OVS_KEY_ATTR_UDP: | |
83d2b9ba JR |
2772 | if ((eth_type != htons(ETH_P_IP) && |
2773 | eth_type != htons(ETH_P_IPV6)) || | |
2774 | flow_key->ip.proto != IPPROTO_UDP) | |
e6445719 PS |
2775 | return -EINVAL; |
2776 | ||
83d2b9ba | 2777 | break; |
25cd9ba0 SH |
2778 | |
2779 | case OVS_KEY_ATTR_MPLS: | |
2780 | if (!eth_p_mpls(eth_type)) | |
2781 | return -EINVAL; | |
2782 | break; | |
e6445719 PS |
2783 | |
2784 | case OVS_KEY_ATTR_SCTP: | |
83d2b9ba JR |
2785 | if ((eth_type != htons(ETH_P_IP) && |
2786 | eth_type != htons(ETH_P_IPV6)) || | |
2787 | flow_key->ip.proto != IPPROTO_SCTP) | |
e6445719 PS |
2788 | return -EINVAL; |
2789 | ||
83d2b9ba | 2790 | break; |
e6445719 | 2791 | |
b2d0f5d5 YY |
2792 | case OVS_KEY_ATTR_NSH: |
2793 | if (eth_type != htons(ETH_P_NSH)) | |
2794 | return -EINVAL; | |
2795 | if (!validate_nsh(nla_data(a), masked, false, log)) | |
2796 | return -EINVAL; | |
2797 | break; | |
2798 | ||
e6445719 PS |
2799 | default: |
2800 | return -EINVAL; | |
2801 | } | |
2802 | ||
83d2b9ba JR |
2803 | /* Convert non-masked non-tunnel set actions to masked set actions. */ |
2804 | if (!masked && key_type != OVS_KEY_ATTR_TUNNEL) { | |
2805 | int start, len = key_len * 2; | |
2806 | struct nlattr *at; | |
2807 | ||
2808 | *skip_copy = true; | |
2809 | ||
2810 | start = add_nested_action_start(sfa, | |
2811 | OVS_ACTION_ATTR_SET_TO_MASKED, | |
2812 | log); | |
2813 | if (start < 0) | |
2814 | return start; | |
2815 | ||
2816 | at = __add_action(sfa, key_type, NULL, len, log); | |
2817 | if (IS_ERR(at)) | |
2818 | return PTR_ERR(at); | |
2819 | ||
2820 | memcpy(nla_data(at), nla_data(ovs_key), key_len); /* Key. */ | |
2821 | memset(nla_data(at) + key_len, 0xff, key_len); /* Mask. */ | |
2822 | /* Clear non-writeable bits from otherwise writeable fields. */ | |
2823 | if (key_type == OVS_KEY_ATTR_IPV6) { | |
2824 | struct ovs_key_ipv6 *mask = nla_data(at) + key_len; | |
2825 | ||
2826 | mask->ipv6_label &= htonl(0x000FFFFF); | |
2827 | } | |
2828 | add_nested_action_end(*sfa, start); | |
2829 | } | |
2830 | ||
e6445719 PS |
2831 | return 0; |
2832 | } | |
2833 | ||
2834 | static int validate_userspace(const struct nlattr *attr) | |
2835 | { | |
2836 | static const struct nla_policy userspace_policy[OVS_USERSPACE_ATTR_MAX + 1] = { | |
2837 | [OVS_USERSPACE_ATTR_PID] = {.type = NLA_U32 }, | |
2838 | [OVS_USERSPACE_ATTR_USERDATA] = {.type = NLA_UNSPEC }, | |
8f0aad6f | 2839 | [OVS_USERSPACE_ATTR_EGRESS_TUN_PORT] = {.type = NLA_U32 }, |
e6445719 PS |
2840 | }; |
2841 | struct nlattr *a[OVS_USERSPACE_ATTR_MAX + 1]; | |
2842 | int error; | |
2843 | ||
8cb08174 JB |
2844 | error = nla_parse_nested_deprecated(a, OVS_USERSPACE_ATTR_MAX, attr, |
2845 | userspace_policy, NULL); | |
e6445719 PS |
2846 | if (error) |
2847 | return error; | |
2848 | ||
2849 | if (!a[OVS_USERSPACE_ATTR_PID] || | |
2850 | !nla_get_u32(a[OVS_USERSPACE_ATTR_PID])) | |
2851 | return -EINVAL; | |
2852 | ||
2853 | return 0; | |
2854 | } | |
2855 | ||
4d5ec89f NS |
2856 | static const struct nla_policy cpl_policy[OVS_CHECK_PKT_LEN_ATTR_MAX + 1] = { |
2857 | [OVS_CHECK_PKT_LEN_ATTR_PKT_LEN] = {.type = NLA_U16 }, | |
2858 | [OVS_CHECK_PKT_LEN_ATTR_ACTIONS_IF_GREATER] = {.type = NLA_NESTED }, | |
2859 | [OVS_CHECK_PKT_LEN_ATTR_ACTIONS_IF_LESS_EQUAL] = {.type = NLA_NESTED }, | |
2860 | }; | |
2861 | ||
2862 | static int validate_and_copy_check_pkt_len(struct net *net, | |
2863 | const struct nlattr *attr, | |
2864 | const struct sw_flow_key *key, | |
2865 | struct sw_flow_actions **sfa, | |
2866 | __be16 eth_type, __be16 vlan_tci, | |
2867 | bool log, bool last) | |
2868 | { | |
2869 | const struct nlattr *acts_if_greater, *acts_if_lesser_eq; | |
2870 | struct nlattr *a[OVS_CHECK_PKT_LEN_ATTR_MAX + 1]; | |
2871 | struct check_pkt_len_arg arg; | |
2872 | int nested_acts_start; | |
2873 | int start, err; | |
2874 | ||
8cb08174 JB |
2875 | err = nla_parse_deprecated_strict(a, OVS_CHECK_PKT_LEN_ATTR_MAX, |
2876 | nla_data(attr), nla_len(attr), | |
2877 | cpl_policy, NULL); | |
4d5ec89f NS |
2878 | if (err) |
2879 | return err; | |
2880 | ||
2881 | if (!a[OVS_CHECK_PKT_LEN_ATTR_PKT_LEN] || | |
2882 | !nla_get_u16(a[OVS_CHECK_PKT_LEN_ATTR_PKT_LEN])) | |
2883 | return -EINVAL; | |
2884 | ||
2885 | acts_if_lesser_eq = a[OVS_CHECK_PKT_LEN_ATTR_ACTIONS_IF_LESS_EQUAL]; | |
2886 | acts_if_greater = a[OVS_CHECK_PKT_LEN_ATTR_ACTIONS_IF_GREATER]; | |
2887 | ||
2888 | /* Both the nested action should be present. */ | |
2889 | if (!acts_if_greater || !acts_if_lesser_eq) | |
2890 | return -EINVAL; | |
2891 | ||
2892 | /* validation done, copy the nested actions. */ | |
2893 | start = add_nested_action_start(sfa, OVS_ACTION_ATTR_CHECK_PKT_LEN, | |
2894 | log); | |
2895 | if (start < 0) | |
2896 | return start; | |
2897 | ||
2898 | arg.pkt_len = nla_get_u16(a[OVS_CHECK_PKT_LEN_ATTR_PKT_LEN]); | |
2899 | arg.exec_for_lesser_equal = | |
2900 | last || !actions_may_change_flow(acts_if_lesser_eq); | |
2901 | arg.exec_for_greater = | |
2902 | last || !actions_may_change_flow(acts_if_greater); | |
2903 | ||
2904 | err = ovs_nla_add_action(sfa, OVS_CHECK_PKT_LEN_ATTR_ARG, &arg, | |
2905 | sizeof(arg), log); | |
2906 | if (err) | |
2907 | return err; | |
2908 | ||
2909 | nested_acts_start = add_nested_action_start(sfa, | |
2910 | OVS_CHECK_PKT_LEN_ATTR_ACTIONS_IF_LESS_EQUAL, log); | |
2911 | if (nested_acts_start < 0) | |
2912 | return nested_acts_start; | |
2913 | ||
2914 | err = __ovs_nla_copy_actions(net, acts_if_lesser_eq, key, sfa, | |
2915 | eth_type, vlan_tci, log); | |
2916 | ||
2917 | if (err) | |
2918 | return err; | |
2919 | ||
2920 | add_nested_action_end(*sfa, nested_acts_start); | |
2921 | ||
2922 | nested_acts_start = add_nested_action_start(sfa, | |
2923 | OVS_CHECK_PKT_LEN_ATTR_ACTIONS_IF_GREATER, log); | |
2924 | if (nested_acts_start < 0) | |
2925 | return nested_acts_start; | |
2926 | ||
2927 | err = __ovs_nla_copy_actions(net, acts_if_greater, key, sfa, | |
2928 | eth_type, vlan_tci, log); | |
2929 | ||
2930 | if (err) | |
2931 | return err; | |
2932 | ||
2933 | add_nested_action_end(*sfa, nested_acts_start); | |
2934 | add_nested_action_end(*sfa, start); | |
2935 | return 0; | |
2936 | } | |
2937 | ||
e6445719 | 2938 | static int copy_action(const struct nlattr *from, |
05da5898 | 2939 | struct sw_flow_actions **sfa, bool log) |
e6445719 PS |
2940 | { |
2941 | int totlen = NLA_ALIGN(from->nla_len); | |
2942 | struct nlattr *to; | |
2943 | ||
05da5898 | 2944 | to = reserve_sfa_size(sfa, from->nla_len, log); |
e6445719 PS |
2945 | if (IS_ERR(to)) |
2946 | return PTR_ERR(to); | |
2947 | ||
2948 | memcpy(to, from, totlen); | |
2949 | return 0; | |
2950 | } | |
2951 | ||
7f8a436e | 2952 | static int __ovs_nla_copy_actions(struct net *net, const struct nlattr *attr, |
25cd9ba0 | 2953 | const struct sw_flow_key *key, |
798c1661 | 2954 | struct sw_flow_actions **sfa, |
05da5898 | 2955 | __be16 eth_type, __be16 vlan_tci, bool log) |
e6445719 | 2956 | { |
0a6410fb | 2957 | u8 mac_proto = ovs_key_mac_proto(key); |
e6445719 PS |
2958 | const struct nlattr *a; |
2959 | int rem, err; | |
2960 | ||
e6445719 PS |
2961 | nla_for_each_nested(a, attr, rem) { |
2962 | /* Expected argument lengths, (u32)-1 for variable length. */ | |
2963 | static const u32 action_lens[OVS_ACTION_ATTR_MAX + 1] = { | |
2964 | [OVS_ACTION_ATTR_OUTPUT] = sizeof(u32), | |
971427f3 | 2965 | [OVS_ACTION_ATTR_RECIRC] = sizeof(u32), |
e6445719 | 2966 | [OVS_ACTION_ATTR_USERSPACE] = (u32)-1, |
25cd9ba0 SH |
2967 | [OVS_ACTION_ATTR_PUSH_MPLS] = sizeof(struct ovs_action_push_mpls), |
2968 | [OVS_ACTION_ATTR_POP_MPLS] = sizeof(__be16), | |
e6445719 PS |
2969 | [OVS_ACTION_ATTR_PUSH_VLAN] = sizeof(struct ovs_action_push_vlan), |
2970 | [OVS_ACTION_ATTR_POP_VLAN] = 0, | |
2971 | [OVS_ACTION_ATTR_SET] = (u32)-1, | |
83d2b9ba | 2972 | [OVS_ACTION_ATTR_SET_MASKED] = (u32)-1, |
971427f3 | 2973 | [OVS_ACTION_ATTR_SAMPLE] = (u32)-1, |
7f8a436e JS |
2974 | [OVS_ACTION_ATTR_HASH] = sizeof(struct ovs_action_hash), |
2975 | [OVS_ACTION_ATTR_CT] = (u32)-1, | |
b8226962 | 2976 | [OVS_ACTION_ATTR_CT_CLEAR] = 0, |
f2a4d086 | 2977 | [OVS_ACTION_ATTR_TRUNC] = sizeof(struct ovs_action_trunc), |
91820da6 JB |
2978 | [OVS_ACTION_ATTR_PUSH_ETH] = sizeof(struct ovs_action_push_eth), |
2979 | [OVS_ACTION_ATTR_POP_ETH] = 0, | |
b2d0f5d5 YY |
2980 | [OVS_ACTION_ATTR_PUSH_NSH] = (u32)-1, |
2981 | [OVS_ACTION_ATTR_POP_NSH] = 0, | |
cd8a6c33 | 2982 | [OVS_ACTION_ATTR_METER] = sizeof(u32), |
b2335040 | 2983 | [OVS_ACTION_ATTR_CLONE] = (u32)-1, |
4d5ec89f | 2984 | [OVS_ACTION_ATTR_CHECK_PKT_LEN] = (u32)-1, |
e6445719 PS |
2985 | }; |
2986 | const struct ovs_action_push_vlan *vlan; | |
2987 | int type = nla_type(a); | |
2988 | bool skip_copy; | |
2989 | ||
2990 | if (type > OVS_ACTION_ATTR_MAX || | |
2991 | (action_lens[type] != nla_len(a) && | |
2992 | action_lens[type] != (u32)-1)) | |
2993 | return -EINVAL; | |
2994 | ||
2995 | skip_copy = false; | |
2996 | switch (type) { | |
2997 | case OVS_ACTION_ATTR_UNSPEC: | |
2998 | return -EINVAL; | |
2999 | ||
3000 | case OVS_ACTION_ATTR_USERSPACE: | |
3001 | err = validate_userspace(a); | |
3002 | if (err) | |
3003 | return err; | |
3004 | break; | |
3005 | ||
3006 | case OVS_ACTION_ATTR_OUTPUT: | |
3007 | if (nla_get_u32(a) >= DP_MAX_PORTS) | |
3008 | return -EINVAL; | |
3009 | break; | |
3010 | ||
f2a4d086 WT |
3011 | case OVS_ACTION_ATTR_TRUNC: { |
3012 | const struct ovs_action_trunc *trunc = nla_data(a); | |
3013 | ||
3014 | if (trunc->max_len < ETH_HLEN) | |
3015 | return -EINVAL; | |
3016 | break; | |
3017 | } | |
3018 | ||
971427f3 AZ |
3019 | case OVS_ACTION_ATTR_HASH: { |
3020 | const struct ovs_action_hash *act_hash = nla_data(a); | |
3021 | ||
3022 | switch (act_hash->hash_alg) { | |
3023 | case OVS_HASH_ALG_L4: | |
3024 | break; | |
3025 | default: | |
3026 | return -EINVAL; | |
3027 | } | |
3028 | ||
3029 | break; | |
3030 | } | |
e6445719 PS |
3031 | |
3032 | case OVS_ACTION_ATTR_POP_VLAN: | |
0a6410fb JB |
3033 | if (mac_proto != MAC_PROTO_ETHERNET) |
3034 | return -EINVAL; | |
25cd9ba0 | 3035 | vlan_tci = htons(0); |
e6445719 PS |
3036 | break; |
3037 | ||
3038 | case OVS_ACTION_ATTR_PUSH_VLAN: | |
0a6410fb JB |
3039 | if (mac_proto != MAC_PROTO_ETHERNET) |
3040 | return -EINVAL; | |
e6445719 | 3041 | vlan = nla_data(a); |
018c1dda | 3042 | if (!eth_type_vlan(vlan->vlan_tpid)) |
e6445719 | 3043 | return -EINVAL; |
9df46aef | 3044 | if (!(vlan->vlan_tci & htons(VLAN_CFI_MASK))) |
e6445719 | 3045 | return -EINVAL; |
25cd9ba0 | 3046 | vlan_tci = vlan->vlan_tci; |
e6445719 PS |
3047 | break; |
3048 | ||
971427f3 AZ |
3049 | case OVS_ACTION_ATTR_RECIRC: |
3050 | break; | |
3051 | ||
25cd9ba0 SH |
3052 | case OVS_ACTION_ATTR_PUSH_MPLS: { |
3053 | const struct ovs_action_push_mpls *mpls = nla_data(a); | |
3054 | ||
25cd9ba0 SH |
3055 | if (!eth_p_mpls(mpls->mpls_ethertype)) |
3056 | return -EINVAL; | |
3057 | /* Prohibit push MPLS other than to a white list | |
3058 | * for packets that have a known tag order. | |
3059 | */ | |
9df46aef | 3060 | if (vlan_tci & htons(VLAN_CFI_MASK) || |
25cd9ba0 SH |
3061 | (eth_type != htons(ETH_P_IP) && |
3062 | eth_type != htons(ETH_P_IPV6) && | |
3063 | eth_type != htons(ETH_P_ARP) && | |
3064 | eth_type != htons(ETH_P_RARP) && | |
3065 | !eth_p_mpls(eth_type))) | |
3066 | return -EINVAL; | |
3067 | eth_type = mpls->mpls_ethertype; | |
3068 | break; | |
3069 | } | |
3070 | ||
3071 | case OVS_ACTION_ATTR_POP_MPLS: | |
9df46aef | 3072 | if (vlan_tci & htons(VLAN_CFI_MASK) || |
25cd9ba0 SH |
3073 | !eth_p_mpls(eth_type)) |
3074 | return -EINVAL; | |
3075 | ||
3076 | /* Disallow subsequent L2.5+ set and mpls_pop actions | |
3077 | * as there is no check here to ensure that the new | |
3078 | * eth_type is valid and thus set actions could | |
3079 | * write off the end of the packet or otherwise | |
3080 | * corrupt it. | |
3081 | * | |
3082 | * Support for these actions is planned using packet | |
3083 | * recirculation. | |
3084 | */ | |
3085 | eth_type = htons(0); | |
3086 | break; | |
3087 | ||
e6445719 | 3088 | case OVS_ACTION_ATTR_SET: |
25cd9ba0 | 3089 | err = validate_set(a, key, sfa, |
0a6410fb JB |
3090 | &skip_copy, mac_proto, eth_type, |
3091 | false, log); | |
83d2b9ba JR |
3092 | if (err) |
3093 | return err; | |
3094 | break; | |
3095 | ||
3096 | case OVS_ACTION_ATTR_SET_MASKED: | |
3097 | err = validate_set(a, key, sfa, | |
0a6410fb JB |
3098 | &skip_copy, mac_proto, eth_type, |
3099 | true, log); | |
e6445719 PS |
3100 | if (err) |
3101 | return err; | |
3102 | break; | |
3103 | ||
798c1661 | 3104 | case OVS_ACTION_ATTR_SAMPLE: { |
3105 | bool last = nla_is_last(a, rem); | |
3106 | ||
3107 | err = validate_and_copy_sample(net, a, key, sfa, | |
3108 | eth_type, vlan_tci, | |
3109 | log, last); | |
e6445719 PS |
3110 | if (err) |
3111 | return err; | |
3112 | skip_copy = true; | |
3113 | break; | |
798c1661 | 3114 | } |
e6445719 | 3115 | |
7f8a436e JS |
3116 | case OVS_ACTION_ATTR_CT: |
3117 | err = ovs_ct_copy_action(net, a, key, sfa, log); | |
3118 | if (err) | |
3119 | return err; | |
3120 | skip_copy = true; | |
3121 | break; | |
3122 | ||
b8226962 EG |
3123 | case OVS_ACTION_ATTR_CT_CLEAR: |
3124 | break; | |
3125 | ||
91820da6 JB |
3126 | case OVS_ACTION_ATTR_PUSH_ETH: |
3127 | /* Disallow pushing an Ethernet header if one | |
3128 | * is already present */ | |
3129 | if (mac_proto != MAC_PROTO_NONE) | |
3130 | return -EINVAL; | |
46ebe283 | 3131 | mac_proto = MAC_PROTO_ETHERNET; |
91820da6 JB |
3132 | break; |
3133 | ||
3134 | case OVS_ACTION_ATTR_POP_ETH: | |
3135 | if (mac_proto != MAC_PROTO_ETHERNET) | |
3136 | return -EINVAL; | |
9df46aef | 3137 | if (vlan_tci & htons(VLAN_CFI_MASK)) |
91820da6 | 3138 | return -EINVAL; |
46ebe283 | 3139 | mac_proto = MAC_PROTO_NONE; |
91820da6 JB |
3140 | break; |
3141 | ||
b2d0f5d5 YY |
3142 | case OVS_ACTION_ATTR_PUSH_NSH: |
3143 | if (mac_proto != MAC_PROTO_ETHERNET) { | |
3144 | u8 next_proto; | |
3145 | ||
3146 | next_proto = tun_p_from_eth_p(eth_type); | |
3147 | if (!next_proto) | |
3148 | return -EINVAL; | |
3149 | } | |
3150 | mac_proto = MAC_PROTO_NONE; | |
3151 | if (!validate_nsh(nla_data(a), false, true, true)) | |
3152 | return -EINVAL; | |
3153 | break; | |
3154 | ||
3155 | case OVS_ACTION_ATTR_POP_NSH: { | |
3156 | __be16 inner_proto; | |
3157 | ||
3158 | if (eth_type != htons(ETH_P_NSH)) | |
3159 | return -EINVAL; | |
3160 | inner_proto = tun_p_to_eth_p(key->nsh.base.np); | |
3161 | if (!inner_proto) | |
3162 | return -EINVAL; | |
3163 | if (key->nsh.base.np == TUN_P_ETHERNET) | |
3164 | mac_proto = MAC_PROTO_ETHERNET; | |
3165 | else | |
3166 | mac_proto = MAC_PROTO_NONE; | |
3167 | break; | |
3168 | } | |
3169 | ||
cd8a6c33 AZ |
3170 | case OVS_ACTION_ATTR_METER: |
3171 | /* Non-existent meters are simply ignored. */ | |
3172 | break; | |
3173 | ||
b2335040 YS |
3174 | case OVS_ACTION_ATTR_CLONE: { |
3175 | bool last = nla_is_last(a, rem); | |
3176 | ||
3177 | err = validate_and_copy_clone(net, a, key, sfa, | |
3178 | eth_type, vlan_tci, | |
3179 | log, last); | |
3180 | if (err) | |
3181 | return err; | |
3182 | skip_copy = true; | |
3183 | break; | |
3184 | } | |
3185 | ||
4d5ec89f NS |
3186 | case OVS_ACTION_ATTR_CHECK_PKT_LEN: { |
3187 | bool last = nla_is_last(a, rem); | |
3188 | ||
3189 | err = validate_and_copy_check_pkt_len(net, a, key, sfa, | |
3190 | eth_type, | |
3191 | vlan_tci, log, | |
3192 | last); | |
3193 | if (err) | |
3194 | return err; | |
3195 | skip_copy = true; | |
3196 | break; | |
3197 | } | |
3198 | ||
e6445719 | 3199 | default: |
05da5898 | 3200 | OVS_NLERR(log, "Unknown Action type %d", type); |
e6445719 PS |
3201 | return -EINVAL; |
3202 | } | |
3203 | if (!skip_copy) { | |
05da5898 | 3204 | err = copy_action(a, sfa, log); |
e6445719 PS |
3205 | if (err) |
3206 | return err; | |
3207 | } | |
3208 | } | |
3209 | ||
3210 | if (rem > 0) | |
3211 | return -EINVAL; | |
3212 | ||
3213 | return 0; | |
3214 | } | |
3215 | ||
83d2b9ba | 3216 | /* 'key' must be the masked key. */ |
7f8a436e | 3217 | int ovs_nla_copy_actions(struct net *net, const struct nlattr *attr, |
25cd9ba0 | 3218 | const struct sw_flow_key *key, |
05da5898 | 3219 | struct sw_flow_actions **sfa, bool log) |
25cd9ba0 | 3220 | { |
2fdb957d PS |
3221 | int err; |
3222 | ||
67c8d22a | 3223 | *sfa = nla_alloc_flow_actions(min(nla_len(attr), MAX_ACTIONS_BUFSIZE)); |
2fdb957d PS |
3224 | if (IS_ERR(*sfa)) |
3225 | return PTR_ERR(*sfa); | |
3226 | ||
8e2fed1c | 3227 | (*sfa)->orig_len = nla_len(attr); |
798c1661 | 3228 | err = __ovs_nla_copy_actions(net, attr, key, sfa, key->eth.type, |
018c1dda | 3229 | key->eth.vlan.tci, log); |
2fdb957d | 3230 | if (err) |
34ae932a | 3231 | ovs_nla_free_flow_actions(*sfa); |
2fdb957d PS |
3232 | |
3233 | return err; | |
25cd9ba0 SH |
3234 | } |
3235 | ||
798c1661 | 3236 | static int sample_action_to_attr(const struct nlattr *attr, |
3237 | struct sk_buff *skb) | |
e6445719 | 3238 | { |
798c1661 | 3239 | struct nlattr *start, *ac_start = NULL, *sample_arg; |
3240 | int err = 0, rem = nla_len(attr); | |
3241 | const struct sample_arg *arg; | |
3242 | struct nlattr *actions; | |
e6445719 | 3243 | |
ae0be8de | 3244 | start = nla_nest_start_noflag(skb, OVS_ACTION_ATTR_SAMPLE); |
e6445719 PS |
3245 | if (!start) |
3246 | return -EMSGSIZE; | |
3247 | ||
798c1661 | 3248 | sample_arg = nla_data(attr); |
3249 | arg = nla_data(sample_arg); | |
3250 | actions = nla_next(sample_arg, &rem); | |
e6445719 | 3251 | |
798c1661 | 3252 | if (nla_put_u32(skb, OVS_SAMPLE_ATTR_PROBABILITY, arg->probability)) { |
3253 | err = -EMSGSIZE; | |
3254 | goto out; | |
3255 | } | |
3256 | ||
ae0be8de | 3257 | ac_start = nla_nest_start_noflag(skb, OVS_SAMPLE_ATTR_ACTIONS); |
798c1661 | 3258 | if (!ac_start) { |
3259 | err = -EMSGSIZE; | |
3260 | goto out; | |
3261 | } | |
3262 | ||
3263 | err = ovs_nla_put_actions(actions, rem, skb); | |
3264 | ||
3265 | out: | |
3266 | if (err) { | |
3267 | nla_nest_cancel(skb, ac_start); | |
3268 | nla_nest_cancel(skb, start); | |
3269 | } else { | |
3270 | nla_nest_end(skb, ac_start); | |
3271 | nla_nest_end(skb, start); | |
e6445719 PS |
3272 | } |
3273 | ||
e6445719 PS |
3274 | return err; |
3275 | } | |
3276 | ||
b2335040 YS |
3277 | static int clone_action_to_attr(const struct nlattr *attr, |
3278 | struct sk_buff *skb) | |
3279 | { | |
3280 | struct nlattr *start; | |
3281 | int err = 0, rem = nla_len(attr); | |
3282 | ||
ae0be8de | 3283 | start = nla_nest_start_noflag(skb, OVS_ACTION_ATTR_CLONE); |
b2335040 YS |
3284 | if (!start) |
3285 | return -EMSGSIZE; | |
3286 | ||
3287 | err = ovs_nla_put_actions(nla_data(attr), rem, skb); | |
3288 | ||
3289 | if (err) | |
3290 | nla_nest_cancel(skb, start); | |
3291 | else | |
3292 | nla_nest_end(skb, start); | |
3293 | ||
3294 | return err; | |
3295 | } | |
3296 | ||
4d5ec89f NS |
3297 | static int check_pkt_len_action_to_attr(const struct nlattr *attr, |
3298 | struct sk_buff *skb) | |
3299 | { | |
3300 | struct nlattr *start, *ac_start = NULL; | |
3301 | const struct check_pkt_len_arg *arg; | |
3302 | const struct nlattr *a, *cpl_arg; | |
3303 | int err = 0, rem = nla_len(attr); | |
3304 | ||
ae0be8de | 3305 | start = nla_nest_start_noflag(skb, OVS_ACTION_ATTR_CHECK_PKT_LEN); |
4d5ec89f NS |
3306 | if (!start) |
3307 | return -EMSGSIZE; | |
3308 | ||
3309 | /* The first nested attribute in 'attr' is always | |
3310 | * 'OVS_CHECK_PKT_LEN_ATTR_ARG'. | |
3311 | */ | |
3312 | cpl_arg = nla_data(attr); | |
3313 | arg = nla_data(cpl_arg); | |
3314 | ||
3315 | if (nla_put_u16(skb, OVS_CHECK_PKT_LEN_ATTR_PKT_LEN, arg->pkt_len)) { | |
3316 | err = -EMSGSIZE; | |
3317 | goto out; | |
3318 | } | |
3319 | ||
3320 | /* Second nested attribute in 'attr' is always | |
3321 | * 'OVS_CHECK_PKT_LEN_ATTR_ACTIONS_IF_LESS_EQUAL'. | |
3322 | */ | |
3323 | a = nla_next(cpl_arg, &rem); | |
ae0be8de MK |
3324 | ac_start = nla_nest_start_noflag(skb, |
3325 | OVS_CHECK_PKT_LEN_ATTR_ACTIONS_IF_LESS_EQUAL); | |
4d5ec89f NS |
3326 | if (!ac_start) { |
3327 | err = -EMSGSIZE; | |
3328 | goto out; | |
3329 | } | |
3330 | ||
3331 | err = ovs_nla_put_actions(nla_data(a), nla_len(a), skb); | |
3332 | if (err) { | |
3333 | nla_nest_cancel(skb, ac_start); | |
3334 | goto out; | |
3335 | } else { | |
3336 | nla_nest_end(skb, ac_start); | |
3337 | } | |
3338 | ||
3339 | /* Third nested attribute in 'attr' is always | |
3340 | * OVS_CHECK_PKT_LEN_ATTR_ACTIONS_IF_GREATER. | |
3341 | */ | |
3342 | a = nla_next(a, &rem); | |
ae0be8de MK |
3343 | ac_start = nla_nest_start_noflag(skb, |
3344 | OVS_CHECK_PKT_LEN_ATTR_ACTIONS_IF_GREATER); | |
4d5ec89f NS |
3345 | if (!ac_start) { |
3346 | err = -EMSGSIZE; | |
3347 | goto out; | |
3348 | } | |
3349 | ||
3350 | err = ovs_nla_put_actions(nla_data(a), nla_len(a), skb); | |
3351 | if (err) { | |
3352 | nla_nest_cancel(skb, ac_start); | |
3353 | goto out; | |
3354 | } else { | |
3355 | nla_nest_end(skb, ac_start); | |
3356 | } | |
3357 | ||
3358 | nla_nest_end(skb, start); | |
3359 | return 0; | |
3360 | ||
3361 | out: | |
3362 | nla_nest_cancel(skb, start); | |
3363 | return err; | |
3364 | } | |
3365 | ||
e6445719 PS |
3366 | static int set_action_to_attr(const struct nlattr *a, struct sk_buff *skb) |
3367 | { | |
3368 | const struct nlattr *ovs_key = nla_data(a); | |
3369 | int key_type = nla_type(ovs_key); | |
3370 | struct nlattr *start; | |
3371 | int err; | |
3372 | ||
3373 | switch (key_type) { | |
f0b128c1 | 3374 | case OVS_KEY_ATTR_TUNNEL_INFO: { |
34ae932a TG |
3375 | struct ovs_tunnel_info *ovs_tun = nla_data(ovs_key); |
3376 | struct ip_tunnel_info *tun_info = &ovs_tun->tun_dst->u.tun_info; | |
f0b128c1 | 3377 | |
ae0be8de | 3378 | start = nla_nest_start_noflag(skb, OVS_ACTION_ATTR_SET); |
e6445719 PS |
3379 | if (!start) |
3380 | return -EMSGSIZE; | |
3381 | ||
e905eabc SH |
3382 | err = ip_tun_to_nlattr(skb, &tun_info->key, |
3383 | ip_tunnel_info_opts(tun_info), | |
3384 | tun_info->options_len, | |
18b6f717 | 3385 | ip_tunnel_info_af(tun_info), tun_info->mode); |
e6445719 PS |
3386 | if (err) |
3387 | return err; | |
3388 | nla_nest_end(skb, start); | |
3389 | break; | |
f0b128c1 | 3390 | } |
e6445719 PS |
3391 | default: |
3392 | if (nla_put(skb, OVS_ACTION_ATTR_SET, nla_len(a), ovs_key)) | |
3393 | return -EMSGSIZE; | |
3394 | break; | |
3395 | } | |
3396 | ||
3397 | return 0; | |
3398 | } | |
3399 | ||
83d2b9ba JR |
3400 | static int masked_set_action_to_set_action_attr(const struct nlattr *a, |
3401 | struct sk_buff *skb) | |
3402 | { | |
3403 | const struct nlattr *ovs_key = nla_data(a); | |
f4f8e738 | 3404 | struct nlattr *nla; |
83d2b9ba JR |
3405 | size_t key_len = nla_len(ovs_key) / 2; |
3406 | ||
3407 | /* Revert the conversion we did from a non-masked set action to | |
3408 | * masked set action. | |
3409 | */ | |
ae0be8de | 3410 | nla = nla_nest_start_noflag(skb, OVS_ACTION_ATTR_SET); |
f4f8e738 | 3411 | if (!nla) |
83d2b9ba JR |
3412 | return -EMSGSIZE; |
3413 | ||
f4f8e738 JS |
3414 | if (nla_put(skb, nla_type(ovs_key), key_len, nla_data(ovs_key))) |
3415 | return -EMSGSIZE; | |
3416 | ||
3417 | nla_nest_end(skb, nla); | |
83d2b9ba JR |
3418 | return 0; |
3419 | } | |
3420 | ||
e6445719 PS |
3421 | int ovs_nla_put_actions(const struct nlattr *attr, int len, struct sk_buff *skb) |
3422 | { | |
3423 | const struct nlattr *a; | |
3424 | int rem, err; | |
3425 | ||
3426 | nla_for_each_attr(a, attr, len, rem) { | |
3427 | int type = nla_type(a); | |
3428 | ||
3429 | switch (type) { | |
3430 | case OVS_ACTION_ATTR_SET: | |
3431 | err = set_action_to_attr(a, skb); | |
3432 | if (err) | |
3433 | return err; | |
3434 | break; | |
3435 | ||
83d2b9ba JR |
3436 | case OVS_ACTION_ATTR_SET_TO_MASKED: |
3437 | err = masked_set_action_to_set_action_attr(a, skb); | |
3438 | if (err) | |
3439 | return err; | |
3440 | break; | |
3441 | ||
e6445719 PS |
3442 | case OVS_ACTION_ATTR_SAMPLE: |
3443 | err = sample_action_to_attr(a, skb); | |
3444 | if (err) | |
3445 | return err; | |
3446 | break; | |
7f8a436e JS |
3447 | |
3448 | case OVS_ACTION_ATTR_CT: | |
3449 | err = ovs_ct_action_to_attr(nla_data(a), skb); | |
3450 | if (err) | |
3451 | return err; | |
3452 | break; | |
3453 | ||
b2335040 YS |
3454 | case OVS_ACTION_ATTR_CLONE: |
3455 | err = clone_action_to_attr(a, skb); | |
3456 | if (err) | |
3457 | return err; | |
3458 | break; | |
3459 | ||
4d5ec89f NS |
3460 | case OVS_ACTION_ATTR_CHECK_PKT_LEN: |
3461 | err = check_pkt_len_action_to_attr(a, skb); | |
3462 | if (err) | |
3463 | return err; | |
3464 | break; | |
3465 | ||
e6445719 PS |
3466 | default: |
3467 | if (nla_put(skb, type, nla_len(a), nla_data(a))) | |
3468 | return -EMSGSIZE; | |
3469 | break; | |
3470 | } | |
3471 | } | |
3472 | ||
3473 | return 0; | |
3474 | } |