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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: |
f66b53fd | 82 | case OVS_ACTION_ATTR_ADD_MPLS: |
798c1661 | 83 | default: |
84 | return true; | |
85 | } | |
86 | } | |
87 | return false; | |
88 | } | |
89 | ||
a85311bf PS |
90 | static void update_range(struct sw_flow_match *match, |
91 | size_t offset, size_t size, bool is_mask) | |
e6445719 | 92 | { |
a85311bf | 93 | struct sw_flow_key_range *range; |
e6445719 PS |
94 | size_t start = rounddown(offset, sizeof(long)); |
95 | size_t end = roundup(offset + size, sizeof(long)); | |
96 | ||
97 | if (!is_mask) | |
98 | range = &match->range; | |
a85311bf | 99 | else |
e6445719 PS |
100 | range = &match->mask->range; |
101 | ||
e6445719 PS |
102 | if (range->start == range->end) { |
103 | range->start = start; | |
104 | range->end = end; | |
105 | return; | |
106 | } | |
107 | ||
108 | if (range->start > start) | |
109 | range->start = start; | |
110 | ||
111 | if (range->end < end) | |
112 | range->end = end; | |
113 | } | |
114 | ||
115 | #define SW_FLOW_KEY_PUT(match, field, value, is_mask) \ | |
116 | do { \ | |
a85311bf PS |
117 | update_range(match, offsetof(struct sw_flow_key, field), \ |
118 | sizeof((match)->key->field), is_mask); \ | |
119 | if (is_mask) \ | |
120 | (match)->mask->key.field = value; \ | |
121 | else \ | |
e6445719 | 122 | (match)->key->field = value; \ |
e6445719 PS |
123 | } while (0) |
124 | ||
f5796684 JG |
125 | #define SW_FLOW_KEY_MEMCPY_OFFSET(match, offset, value_p, len, is_mask) \ |
126 | do { \ | |
a85311bf | 127 | update_range(match, offset, len, is_mask); \ |
f5796684 JG |
128 | if (is_mask) \ |
129 | memcpy((u8 *)&(match)->mask->key + offset, value_p, \ | |
a85311bf | 130 | len); \ |
f5796684 JG |
131 | else \ |
132 | memcpy((u8 *)(match)->key + offset, value_p, len); \ | |
e6445719 PS |
133 | } while (0) |
134 | ||
f5796684 JG |
135 | #define SW_FLOW_KEY_MEMCPY(match, field, value_p, len, is_mask) \ |
136 | SW_FLOW_KEY_MEMCPY_OFFSET(match, offsetof(struct sw_flow_key, field), \ | |
137 | value_p, len, is_mask) | |
138 | ||
a85311bf PS |
139 | #define SW_FLOW_KEY_MEMSET_FIELD(match, field, value, is_mask) \ |
140 | do { \ | |
141 | update_range(match, offsetof(struct sw_flow_key, field), \ | |
142 | sizeof((match)->key->field), is_mask); \ | |
143 | if (is_mask) \ | |
144 | memset((u8 *)&(match)->mask->key.field, value, \ | |
145 | sizeof((match)->mask->key.field)); \ | |
146 | else \ | |
f47de068 PS |
147 | memset((u8 *)&(match)->key->field, value, \ |
148 | sizeof((match)->key->field)); \ | |
f47de068 | 149 | } while (0) |
e6445719 PS |
150 | |
151 | static bool match_validate(const struct sw_flow_match *match, | |
05da5898 | 152 | u64 key_attrs, u64 mask_attrs, bool log) |
e6445719 | 153 | { |
0a6410fb | 154 | u64 key_expected = 0; |
e6445719 PS |
155 | u64 mask_allowed = key_attrs; /* At most allow all key attributes */ |
156 | ||
157 | /* The following mask attributes allowed only if they | |
158 | * pass the validation tests. */ | |
159 | mask_allowed &= ~((1 << OVS_KEY_ATTR_IPV4) | |
9dd7f890 | 160 | | (1 << OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV4) |
e6445719 | 161 | | (1 << OVS_KEY_ATTR_IPV6) |
9dd7f890 | 162 | | (1 << OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV6) |
e6445719 | 163 | | (1 << OVS_KEY_ATTR_TCP) |
5eb26b15 | 164 | | (1 << OVS_KEY_ATTR_TCP_FLAGS) |
e6445719 PS |
165 | | (1 << OVS_KEY_ATTR_UDP) |
166 | | (1 << OVS_KEY_ATTR_SCTP) | |
167 | | (1 << OVS_KEY_ATTR_ICMP) | |
168 | | (1 << OVS_KEY_ATTR_ICMPV6) | |
169 | | (1 << OVS_KEY_ATTR_ARP) | |
25cd9ba0 | 170 | | (1 << OVS_KEY_ATTR_ND) |
b2d0f5d5 YY |
171 | | (1 << OVS_KEY_ATTR_MPLS) |
172 | | (1 << OVS_KEY_ATTR_NSH)); | |
e6445719 PS |
173 | |
174 | /* Always allowed mask fields. */ | |
175 | mask_allowed |= ((1 << OVS_KEY_ATTR_TUNNEL) | |
176 | | (1 << OVS_KEY_ATTR_IN_PORT) | |
177 | | (1 << OVS_KEY_ATTR_ETHERTYPE)); | |
178 | ||
179 | /* Check key attributes. */ | |
180 | if (match->key->eth.type == htons(ETH_P_ARP) | |
181 | || match->key->eth.type == htons(ETH_P_RARP)) { | |
182 | key_expected |= 1 << OVS_KEY_ATTR_ARP; | |
f2a01517 | 183 | if (match->mask && (match->mask->key.eth.type == htons(0xffff))) |
e6445719 PS |
184 | mask_allowed |= 1 << OVS_KEY_ATTR_ARP; |
185 | } | |
186 | ||
25cd9ba0 SH |
187 | if (eth_p_mpls(match->key->eth.type)) { |
188 | key_expected |= 1 << OVS_KEY_ATTR_MPLS; | |
189 | if (match->mask && (match->mask->key.eth.type == htons(0xffff))) | |
190 | mask_allowed |= 1 << OVS_KEY_ATTR_MPLS; | |
191 | } | |
192 | ||
e6445719 PS |
193 | if (match->key->eth.type == htons(ETH_P_IP)) { |
194 | key_expected |= 1 << OVS_KEY_ATTR_IPV4; | |
9dd7f890 | 195 | if (match->mask && match->mask->key.eth.type == htons(0xffff)) { |
e6445719 | 196 | mask_allowed |= 1 << OVS_KEY_ATTR_IPV4; |
9dd7f890 JR |
197 | mask_allowed |= 1 << OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV4; |
198 | } | |
e6445719 PS |
199 | |
200 | if (match->key->ip.frag != OVS_FRAG_TYPE_LATER) { | |
201 | if (match->key->ip.proto == IPPROTO_UDP) { | |
202 | key_expected |= 1 << OVS_KEY_ATTR_UDP; | |
203 | if (match->mask && (match->mask->key.ip.proto == 0xff)) | |
204 | mask_allowed |= 1 << OVS_KEY_ATTR_UDP; | |
205 | } | |
206 | ||
207 | if (match->key->ip.proto == IPPROTO_SCTP) { | |
208 | key_expected |= 1 << OVS_KEY_ATTR_SCTP; | |
209 | if (match->mask && (match->mask->key.ip.proto == 0xff)) | |
210 | mask_allowed |= 1 << OVS_KEY_ATTR_SCTP; | |
211 | } | |
212 | ||
213 | if (match->key->ip.proto == IPPROTO_TCP) { | |
214 | key_expected |= 1 << OVS_KEY_ATTR_TCP; | |
5eb26b15 JR |
215 | key_expected |= 1 << OVS_KEY_ATTR_TCP_FLAGS; |
216 | if (match->mask && (match->mask->key.ip.proto == 0xff)) { | |
e6445719 | 217 | mask_allowed |= 1 << OVS_KEY_ATTR_TCP; |
5eb26b15 JR |
218 | mask_allowed |= 1 << OVS_KEY_ATTR_TCP_FLAGS; |
219 | } | |
e6445719 PS |
220 | } |
221 | ||
222 | if (match->key->ip.proto == IPPROTO_ICMP) { | |
223 | key_expected |= 1 << OVS_KEY_ATTR_ICMP; | |
224 | if (match->mask && (match->mask->key.ip.proto == 0xff)) | |
225 | mask_allowed |= 1 << OVS_KEY_ATTR_ICMP; | |
226 | } | |
227 | } | |
228 | } | |
229 | ||
230 | if (match->key->eth.type == htons(ETH_P_IPV6)) { | |
231 | key_expected |= 1 << OVS_KEY_ATTR_IPV6; | |
9dd7f890 | 232 | if (match->mask && match->mask->key.eth.type == htons(0xffff)) { |
e6445719 | 233 | mask_allowed |= 1 << OVS_KEY_ATTR_IPV6; |
9dd7f890 JR |
234 | mask_allowed |= 1 << OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV6; |
235 | } | |
e6445719 PS |
236 | |
237 | if (match->key->ip.frag != OVS_FRAG_TYPE_LATER) { | |
238 | if (match->key->ip.proto == IPPROTO_UDP) { | |
239 | key_expected |= 1 << OVS_KEY_ATTR_UDP; | |
240 | if (match->mask && (match->mask->key.ip.proto == 0xff)) | |
241 | mask_allowed |= 1 << OVS_KEY_ATTR_UDP; | |
242 | } | |
243 | ||
244 | if (match->key->ip.proto == IPPROTO_SCTP) { | |
245 | key_expected |= 1 << OVS_KEY_ATTR_SCTP; | |
246 | if (match->mask && (match->mask->key.ip.proto == 0xff)) | |
247 | mask_allowed |= 1 << OVS_KEY_ATTR_SCTP; | |
248 | } | |
249 | ||
250 | if (match->key->ip.proto == IPPROTO_TCP) { | |
251 | key_expected |= 1 << OVS_KEY_ATTR_TCP; | |
5eb26b15 JR |
252 | key_expected |= 1 << OVS_KEY_ATTR_TCP_FLAGS; |
253 | if (match->mask && (match->mask->key.ip.proto == 0xff)) { | |
e6445719 | 254 | mask_allowed |= 1 << OVS_KEY_ATTR_TCP; |
5eb26b15 JR |
255 | mask_allowed |= 1 << OVS_KEY_ATTR_TCP_FLAGS; |
256 | } | |
e6445719 PS |
257 | } |
258 | ||
259 | if (match->key->ip.proto == IPPROTO_ICMPV6) { | |
260 | key_expected |= 1 << OVS_KEY_ATTR_ICMPV6; | |
261 | if (match->mask && (match->mask->key.ip.proto == 0xff)) | |
262 | mask_allowed |= 1 << OVS_KEY_ATTR_ICMPV6; | |
263 | ||
1139e241 | 264 | if (match->key->tp.src == |
e6445719 | 265 | htons(NDISC_NEIGHBOUR_SOLICITATION) || |
1139e241 | 266 | match->key->tp.src == htons(NDISC_NEIGHBOUR_ADVERTISEMENT)) { |
e6445719 | 267 | key_expected |= 1 << OVS_KEY_ATTR_ND; |
9dd7f890 JR |
268 | /* Original direction conntrack tuple |
269 | * uses the same space as the ND fields | |
270 | * in the key, so both are not allowed | |
271 | * at the same time. | |
272 | */ | |
273 | mask_allowed &= ~(1ULL << OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV6); | |
f2a01517 | 274 | if (match->mask && (match->mask->key.tp.src == htons(0xff))) |
e6445719 PS |
275 | mask_allowed |= 1 << OVS_KEY_ATTR_ND; |
276 | } | |
277 | } | |
278 | } | |
279 | } | |
280 | ||
b2d0f5d5 YY |
281 | if (match->key->eth.type == htons(ETH_P_NSH)) { |
282 | key_expected |= 1 << OVS_KEY_ATTR_NSH; | |
283 | if (match->mask && | |
284 | match->mask->key.eth.type == htons(0xffff)) { | |
285 | mask_allowed |= 1 << OVS_KEY_ATTR_NSH; | |
286 | } | |
287 | } | |
288 | ||
e6445719 PS |
289 | if ((key_attrs & key_expected) != key_expected) { |
290 | /* Key attributes check failed. */ | |
05da5898 JR |
291 | OVS_NLERR(log, "Missing key (keys=%llx, expected=%llx)", |
292 | (unsigned long long)key_attrs, | |
293 | (unsigned long long)key_expected); | |
e6445719 PS |
294 | return false; |
295 | } | |
296 | ||
297 | if ((mask_attrs & mask_allowed) != mask_attrs) { | |
298 | /* Mask attributes check failed. */ | |
05da5898 JR |
299 | OVS_NLERR(log, "Unexpected mask (mask=%llx, allowed=%llx)", |
300 | (unsigned long long)mask_attrs, | |
301 | (unsigned long long)mask_allowed); | |
e6445719 PS |
302 | return false; |
303 | } | |
304 | ||
305 | return true; | |
306 | } | |
307 | ||
8f0aad6f WZ |
308 | size_t ovs_tun_key_attr_size(void) |
309 | { | |
310 | /* Whenever adding new OVS_TUNNEL_KEY_ FIELDS, we should consider | |
311 | * updating this function. | |
312 | */ | |
b46f6ded | 313 | return nla_total_size_64bit(8) /* OVS_TUNNEL_KEY_ATTR_ID */ |
6b26ba3a JB |
314 | + nla_total_size(16) /* OVS_TUNNEL_KEY_ATTR_IPV[46]_SRC */ |
315 | + nla_total_size(16) /* OVS_TUNNEL_KEY_ATTR_IPV[46]_DST */ | |
8f0aad6f WZ |
316 | + nla_total_size(1) /* OVS_TUNNEL_KEY_ATTR_TOS */ |
317 | + nla_total_size(1) /* OVS_TUNNEL_KEY_ATTR_TTL */ | |
318 | + nla_total_size(0) /* OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT */ | |
319 | + nla_total_size(0) /* OVS_TUNNEL_KEY_ATTR_CSUM */ | |
320 | + nla_total_size(0) /* OVS_TUNNEL_KEY_ATTR_OAM */ | |
321 | + nla_total_size(256) /* OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS */ | |
fc1372f8 WT |
322 | /* OVS_TUNNEL_KEY_ATTR_VXLAN_OPTS and |
323 | * OVS_TUNNEL_KEY_ATTR_ERSPAN_OPTS is mutually exclusive with | |
1dd144cf TG |
324 | * OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS and covered by it. |
325 | */ | |
8f0aad6f | 326 | + nla_total_size(2) /* OVS_TUNNEL_KEY_ATTR_TP_SRC */ |
95a33208 | 327 | + nla_total_size(2); /* OVS_TUNNEL_KEY_ATTR_TP_DST */ |
8f0aad6f WZ |
328 | } |
329 | ||
06c2351f | 330 | static size_t ovs_nsh_key_attr_size(void) |
b2d0f5d5 YY |
331 | { |
332 | /* Whenever adding new OVS_NSH_KEY_ FIELDS, we should consider | |
333 | * updating this function. | |
334 | */ | |
335 | return nla_total_size(NSH_BASE_HDR_LEN) /* OVS_NSH_KEY_ATTR_BASE */ | |
336 | /* OVS_NSH_KEY_ATTR_MD1 and OVS_NSH_KEY_ATTR_MD2 are | |
337 | * mutually exclusive, so the bigger one can cover | |
338 | * the small one. | |
339 | */ | |
340 | + nla_total_size(NSH_CTX_HDRS_MAX_LEN); | |
341 | } | |
342 | ||
41af73e9 JS |
343 | size_t ovs_key_attr_size(void) |
344 | { | |
345 | /* Whenever adding new OVS_KEY_ FIELDS, we should consider | |
346 | * updating this function. | |
347 | */ | |
b2d0f5d5 | 348 | BUILD_BUG_ON(OVS_KEY_ATTR_TUNNEL_INFO != 29); |
41af73e9 JS |
349 | |
350 | return nla_total_size(4) /* OVS_KEY_ATTR_PRIORITY */ | |
351 | + nla_total_size(0) /* OVS_KEY_ATTR_TUNNEL */ | |
8f0aad6f | 352 | + ovs_tun_key_attr_size() |
41af73e9 JS |
353 | + nla_total_size(4) /* OVS_KEY_ATTR_IN_PORT */ |
354 | + nla_total_size(4) /* OVS_KEY_ATTR_SKB_MARK */ | |
355 | + nla_total_size(4) /* OVS_KEY_ATTR_DP_HASH */ | |
356 | + nla_total_size(4) /* OVS_KEY_ATTR_RECIRC_ID */ | |
fbccce59 | 357 | + nla_total_size(4) /* OVS_KEY_ATTR_CT_STATE */ |
7f8a436e | 358 | + nla_total_size(2) /* OVS_KEY_ATTR_CT_ZONE */ |
182e3042 | 359 | + nla_total_size(4) /* OVS_KEY_ATTR_CT_MARK */ |
33db4125 | 360 | + nla_total_size(16) /* OVS_KEY_ATTR_CT_LABELS */ |
9dd7f890 | 361 | + nla_total_size(40) /* OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV6 */ |
b2d0f5d5 YY |
362 | + nla_total_size(0) /* OVS_KEY_ATTR_NSH */ |
363 | + ovs_nsh_key_attr_size() | |
41af73e9 JS |
364 | + nla_total_size(12) /* OVS_KEY_ATTR_ETHERNET */ |
365 | + nla_total_size(2) /* OVS_KEY_ATTR_ETHERTYPE */ | |
366 | + nla_total_size(4) /* OVS_KEY_ATTR_VLAN */ | |
367 | + nla_total_size(0) /* OVS_KEY_ATTR_ENCAP */ | |
368 | + nla_total_size(2) /* OVS_KEY_ATTR_ETHERTYPE */ | |
369 | + nla_total_size(40) /* OVS_KEY_ATTR_IPV6 */ | |
370 | + nla_total_size(2) /* OVS_KEY_ATTR_ICMPV6 */ | |
371 | + nla_total_size(28); /* OVS_KEY_ATTR_ND */ | |
372 | } | |
373 | ||
982b5270 JG |
374 | static const struct ovs_len_tbl ovs_vxlan_ext_key_lens[OVS_VXLAN_EXT_MAX + 1] = { |
375 | [OVS_VXLAN_EXT_GBP] = { .len = sizeof(u32) }, | |
376 | }; | |
377 | ||
81bfe3c3 TG |
378 | static const struct ovs_len_tbl ovs_tunnel_key_lens[OVS_TUNNEL_KEY_ATTR_MAX + 1] = { |
379 | [OVS_TUNNEL_KEY_ATTR_ID] = { .len = sizeof(u64) }, | |
380 | [OVS_TUNNEL_KEY_ATTR_IPV4_SRC] = { .len = sizeof(u32) }, | |
381 | [OVS_TUNNEL_KEY_ATTR_IPV4_DST] = { .len = sizeof(u32) }, | |
382 | [OVS_TUNNEL_KEY_ATTR_TOS] = { .len = 1 }, | |
383 | [OVS_TUNNEL_KEY_ATTR_TTL] = { .len = 1 }, | |
384 | [OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT] = { .len = 0 }, | |
385 | [OVS_TUNNEL_KEY_ATTR_CSUM] = { .len = 0 }, | |
386 | [OVS_TUNNEL_KEY_ATTR_TP_SRC] = { .len = sizeof(u16) }, | |
387 | [OVS_TUNNEL_KEY_ATTR_TP_DST] = { .len = sizeof(u16) }, | |
388 | [OVS_TUNNEL_KEY_ATTR_OAM] = { .len = 0 }, | |
982b5270 JG |
389 | [OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS] = { .len = OVS_ATTR_VARIABLE }, |
390 | [OVS_TUNNEL_KEY_ATTR_VXLAN_OPTS] = { .len = OVS_ATTR_NESTED, | |
391 | .next = ovs_vxlan_ext_key_lens }, | |
6b26ba3a JB |
392 | [OVS_TUNNEL_KEY_ATTR_IPV6_SRC] = { .len = sizeof(struct in6_addr) }, |
393 | [OVS_TUNNEL_KEY_ATTR_IPV6_DST] = { .len = sizeof(struct in6_addr) }, | |
fc1372f8 | 394 | [OVS_TUNNEL_KEY_ATTR_ERSPAN_OPTS] = { .len = OVS_ATTR_VARIABLE }, |
18b6f717 | 395 | [OVS_TUNNEL_KEY_ATTR_IPV4_INFO_BRIDGE] = { .len = 0 }, |
81bfe3c3 TG |
396 | }; |
397 | ||
b2d0f5d5 YY |
398 | static const struct ovs_len_tbl |
399 | ovs_nsh_key_attr_lens[OVS_NSH_KEY_ATTR_MAX + 1] = { | |
400 | [OVS_NSH_KEY_ATTR_BASE] = { .len = sizeof(struct ovs_nsh_key_base) }, | |
401 | [OVS_NSH_KEY_ATTR_MD1] = { .len = sizeof(struct ovs_nsh_key_md1) }, | |
402 | [OVS_NSH_KEY_ATTR_MD2] = { .len = OVS_ATTR_VARIABLE }, | |
403 | }; | |
404 | ||
e6445719 | 405 | /* The size of the argument for each %OVS_KEY_ATTR_* Netlink attribute. */ |
81bfe3c3 TG |
406 | static const struct ovs_len_tbl ovs_key_lens[OVS_KEY_ATTR_MAX + 1] = { |
407 | [OVS_KEY_ATTR_ENCAP] = { .len = OVS_ATTR_NESTED }, | |
408 | [OVS_KEY_ATTR_PRIORITY] = { .len = sizeof(u32) }, | |
409 | [OVS_KEY_ATTR_IN_PORT] = { .len = sizeof(u32) }, | |
410 | [OVS_KEY_ATTR_SKB_MARK] = { .len = sizeof(u32) }, | |
411 | [OVS_KEY_ATTR_ETHERNET] = { .len = sizeof(struct ovs_key_ethernet) }, | |
412 | [OVS_KEY_ATTR_VLAN] = { .len = sizeof(__be16) }, | |
413 | [OVS_KEY_ATTR_ETHERTYPE] = { .len = sizeof(__be16) }, | |
414 | [OVS_KEY_ATTR_IPV4] = { .len = sizeof(struct ovs_key_ipv4) }, | |
415 | [OVS_KEY_ATTR_IPV6] = { .len = sizeof(struct ovs_key_ipv6) }, | |
416 | [OVS_KEY_ATTR_TCP] = { .len = sizeof(struct ovs_key_tcp) }, | |
417 | [OVS_KEY_ATTR_TCP_FLAGS] = { .len = sizeof(__be16) }, | |
418 | [OVS_KEY_ATTR_UDP] = { .len = sizeof(struct ovs_key_udp) }, | |
419 | [OVS_KEY_ATTR_SCTP] = { .len = sizeof(struct ovs_key_sctp) }, | |
420 | [OVS_KEY_ATTR_ICMP] = { .len = sizeof(struct ovs_key_icmp) }, | |
421 | [OVS_KEY_ATTR_ICMPV6] = { .len = sizeof(struct ovs_key_icmpv6) }, | |
422 | [OVS_KEY_ATTR_ARP] = { .len = sizeof(struct ovs_key_arp) }, | |
423 | [OVS_KEY_ATTR_ND] = { .len = sizeof(struct ovs_key_nd) }, | |
424 | [OVS_KEY_ATTR_RECIRC_ID] = { .len = sizeof(u32) }, | |
425 | [OVS_KEY_ATTR_DP_HASH] = { .len = sizeof(u32) }, | |
426 | [OVS_KEY_ATTR_TUNNEL] = { .len = OVS_ATTR_NESTED, | |
427 | .next = ovs_tunnel_key_lens, }, | |
fbdcdd78 | 428 | [OVS_KEY_ATTR_MPLS] = { .len = OVS_ATTR_VARIABLE }, |
fbccce59 | 429 | [OVS_KEY_ATTR_CT_STATE] = { .len = sizeof(u32) }, |
7f8a436e | 430 | [OVS_KEY_ATTR_CT_ZONE] = { .len = sizeof(u16) }, |
182e3042 | 431 | [OVS_KEY_ATTR_CT_MARK] = { .len = sizeof(u32) }, |
33db4125 | 432 | [OVS_KEY_ATTR_CT_LABELS] = { .len = sizeof(struct ovs_key_ct_labels) }, |
9dd7f890 JR |
433 | [OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV4] = { |
434 | .len = sizeof(struct ovs_key_ct_tuple_ipv4) }, | |
435 | [OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV6] = { | |
436 | .len = sizeof(struct ovs_key_ct_tuple_ipv6) }, | |
b2d0f5d5 YY |
437 | [OVS_KEY_ATTR_NSH] = { .len = OVS_ATTR_NESTED, |
438 | .next = ovs_nsh_key_attr_lens, }, | |
e6445719 PS |
439 | }; |
440 | ||
982b5270 JG |
441 | static bool check_attr_len(unsigned int attr_len, unsigned int expected_len) |
442 | { | |
443 | return expected_len == attr_len || | |
444 | expected_len == OVS_ATTR_NESTED || | |
445 | expected_len == OVS_ATTR_VARIABLE; | |
446 | } | |
447 | ||
e6445719 PS |
448 | static bool is_all_zero(const u8 *fp, size_t size) |
449 | { | |
450 | int i; | |
451 | ||
452 | if (!fp) | |
453 | return false; | |
454 | ||
455 | for (i = 0; i < size; i++) | |
456 | if (fp[i]) | |
457 | return false; | |
458 | ||
459 | return true; | |
460 | } | |
461 | ||
462 | static int __parse_flow_nlattrs(const struct nlattr *attr, | |
463 | const struct nlattr *a[], | |
05da5898 | 464 | u64 *attrsp, bool log, bool nz) |
e6445719 PS |
465 | { |
466 | const struct nlattr *nla; | |
467 | u64 attrs; | |
468 | int rem; | |
469 | ||
470 | attrs = *attrsp; | |
471 | nla_for_each_nested(nla, attr, rem) { | |
472 | u16 type = nla_type(nla); | |
473 | int expected_len; | |
474 | ||
475 | if (type > OVS_KEY_ATTR_MAX) { | |
05da5898 | 476 | OVS_NLERR(log, "Key type %d is out of range max %d", |
e6445719 PS |
477 | type, OVS_KEY_ATTR_MAX); |
478 | return -EINVAL; | |
479 | } | |
480 | ||
481 | if (attrs & (1 << type)) { | |
05da5898 | 482 | OVS_NLERR(log, "Duplicate key (type %d).", type); |
e6445719 PS |
483 | return -EINVAL; |
484 | } | |
485 | ||
81bfe3c3 | 486 | expected_len = ovs_key_lens[type].len; |
982b5270 | 487 | if (!check_attr_len(nla_len(nla), expected_len)) { |
05da5898 JR |
488 | OVS_NLERR(log, "Key %d has unexpected len %d expected %d", |
489 | type, nla_len(nla), expected_len); | |
e6445719 PS |
490 | return -EINVAL; |
491 | } | |
492 | ||
04a4af33 | 493 | if (!nz || !is_all_zero(nla_data(nla), nla_len(nla))) { |
e6445719 PS |
494 | attrs |= 1 << type; |
495 | a[type] = nla; | |
496 | } | |
497 | } | |
498 | if (rem) { | |
05da5898 | 499 | OVS_NLERR(log, "Message has %d unknown bytes.", rem); |
e6445719 PS |
500 | return -EINVAL; |
501 | } | |
502 | ||
503 | *attrsp = attrs; | |
504 | return 0; | |
505 | } | |
506 | ||
507 | static int parse_flow_mask_nlattrs(const struct nlattr *attr, | |
05da5898 JR |
508 | const struct nlattr *a[], u64 *attrsp, |
509 | bool log) | |
e6445719 | 510 | { |
05da5898 | 511 | return __parse_flow_nlattrs(attr, a, attrsp, log, true); |
e6445719 PS |
512 | } |
513 | ||
9dd7f890 JR |
514 | int parse_flow_nlattrs(const struct nlattr *attr, const struct nlattr *a[], |
515 | u64 *attrsp, bool log) | |
e6445719 | 516 | { |
05da5898 JR |
517 | return __parse_flow_nlattrs(attr, a, attrsp, log, false); |
518 | } | |
519 | ||
520 | static int genev_tun_opt_from_nlattr(const struct nlattr *a, | |
521 | struct sw_flow_match *match, bool is_mask, | |
522 | bool log) | |
523 | { | |
524 | unsigned long opt_key_offset; | |
525 | ||
526 | if (nla_len(a) > sizeof(match->key->tun_opts)) { | |
527 | OVS_NLERR(log, "Geneve option length err (len %d, max %zu).", | |
528 | nla_len(a), sizeof(match->key->tun_opts)); | |
529 | return -EINVAL; | |
530 | } | |
531 | ||
532 | if (nla_len(a) % 4 != 0) { | |
533 | OVS_NLERR(log, "Geneve opt len %d is not a multiple of 4.", | |
534 | nla_len(a)); | |
535 | return -EINVAL; | |
536 | } | |
537 | ||
538 | /* We need to record the length of the options passed | |
539 | * down, otherwise packets with the same format but | |
540 | * additional options will be silently matched. | |
541 | */ | |
542 | if (!is_mask) { | |
543 | SW_FLOW_KEY_PUT(match, tun_opts_len, nla_len(a), | |
544 | false); | |
545 | } else { | |
546 | /* This is somewhat unusual because it looks at | |
547 | * both the key and mask while parsing the | |
548 | * attributes (and by extension assumes the key | |
549 | * is parsed first). Normally, we would verify | |
550 | * that each is the correct length and that the | |
551 | * attributes line up in the validate function. | |
552 | * However, that is difficult because this is | |
553 | * variable length and we won't have the | |
554 | * information later. | |
555 | */ | |
556 | if (match->key->tun_opts_len != nla_len(a)) { | |
557 | OVS_NLERR(log, "Geneve option len %d != mask len %d", | |
558 | match->key->tun_opts_len, nla_len(a)); | |
559 | return -EINVAL; | |
560 | } | |
561 | ||
562 | SW_FLOW_KEY_PUT(match, tun_opts_len, 0xff, true); | |
563 | } | |
564 | ||
d91641d9 | 565 | opt_key_offset = TUN_METADATA_OFFSET(nla_len(a)); |
05da5898 JR |
566 | SW_FLOW_KEY_MEMCPY_OFFSET(match, opt_key_offset, nla_data(a), |
567 | nla_len(a), is_mask); | |
568 | return 0; | |
e6445719 PS |
569 | } |
570 | ||
982b5270 | 571 | static int vxlan_tun_opt_from_nlattr(const struct nlattr *attr, |
1dd144cf TG |
572 | struct sw_flow_match *match, bool is_mask, |
573 | bool log) | |
574 | { | |
982b5270 JG |
575 | struct nlattr *a; |
576 | int rem; | |
1dd144cf | 577 | unsigned long opt_key_offset; |
614732ea | 578 | struct vxlan_metadata opts; |
1dd144cf TG |
579 | |
580 | BUILD_BUG_ON(sizeof(opts) > sizeof(match->key->tun_opts)); | |
581 | ||
1dd144cf | 582 | memset(&opts, 0, sizeof(opts)); |
982b5270 JG |
583 | nla_for_each_nested(a, attr, rem) { |
584 | int type = nla_type(a); | |
1dd144cf | 585 | |
982b5270 JG |
586 | if (type > OVS_VXLAN_EXT_MAX) { |
587 | OVS_NLERR(log, "VXLAN extension %d out of range max %d", | |
588 | type, OVS_VXLAN_EXT_MAX); | |
589 | return -EINVAL; | |
590 | } | |
591 | ||
592 | if (!check_attr_len(nla_len(a), | |
593 | ovs_vxlan_ext_key_lens[type].len)) { | |
594 | OVS_NLERR(log, "VXLAN extension %d has unexpected len %d expected %d", | |
595 | type, nla_len(a), | |
596 | ovs_vxlan_ext_key_lens[type].len); | |
597 | return -EINVAL; | |
598 | } | |
599 | ||
600 | switch (type) { | |
601 | case OVS_VXLAN_EXT_GBP: | |
602 | opts.gbp = nla_get_u32(a); | |
603 | break; | |
604 | default: | |
605 | OVS_NLERR(log, "Unknown VXLAN extension attribute %d", | |
606 | type); | |
607 | return -EINVAL; | |
608 | } | |
609 | } | |
610 | if (rem) { | |
611 | OVS_NLERR(log, "VXLAN extension message has %d unknown bytes.", | |
612 | rem); | |
613 | return -EINVAL; | |
614 | } | |
1dd144cf TG |
615 | |
616 | if (!is_mask) | |
617 | SW_FLOW_KEY_PUT(match, tun_opts_len, sizeof(opts), false); | |
618 | else | |
619 | SW_FLOW_KEY_PUT(match, tun_opts_len, 0xff, true); | |
620 | ||
621 | opt_key_offset = TUN_METADATA_OFFSET(sizeof(opts)); | |
622 | SW_FLOW_KEY_MEMCPY_OFFSET(match, opt_key_offset, &opts, sizeof(opts), | |
623 | is_mask); | |
624 | return 0; | |
625 | } | |
626 | ||
fc1372f8 WT |
627 | static int erspan_tun_opt_from_nlattr(const struct nlattr *a, |
628 | struct sw_flow_match *match, bool is_mask, | |
629 | bool log) | |
630 | { | |
631 | unsigned long opt_key_offset; | |
632 | ||
633 | BUILD_BUG_ON(sizeof(struct erspan_metadata) > | |
634 | sizeof(match->key->tun_opts)); | |
635 | ||
636 | if (nla_len(a) > sizeof(match->key->tun_opts)) { | |
637 | OVS_NLERR(log, "ERSPAN option length err (len %d, max %zu).", | |
638 | nla_len(a), sizeof(match->key->tun_opts)); | |
639 | return -EINVAL; | |
640 | } | |
641 | ||
642 | if (!is_mask) | |
643 | SW_FLOW_KEY_PUT(match, tun_opts_len, | |
644 | sizeof(struct erspan_metadata), false); | |
645 | else | |
646 | SW_FLOW_KEY_PUT(match, tun_opts_len, 0xff, true); | |
647 | ||
648 | opt_key_offset = TUN_METADATA_OFFSET(nla_len(a)); | |
649 | SW_FLOW_KEY_MEMCPY_OFFSET(match, opt_key_offset, nla_data(a), | |
650 | nla_len(a), is_mask); | |
651 | return 0; | |
652 | } | |
653 | ||
6b26ba3a JB |
654 | static int ip_tun_from_nlattr(const struct nlattr *attr, |
655 | struct sw_flow_match *match, bool is_mask, | |
656 | bool log) | |
e6445719 | 657 | { |
99e28f18 | 658 | bool ttl = false, ipv4 = false, ipv6 = false; |
18b6f717 | 659 | bool info_bridge_mode = false; |
99e28f18 PS |
660 | __be16 tun_flags = 0; |
661 | int opts_type = 0; | |
e6445719 PS |
662 | struct nlattr *a; |
663 | int rem; | |
e6445719 PS |
664 | |
665 | nla_for_each_nested(a, attr, rem) { | |
666 | int type = nla_type(a); | |
05da5898 JR |
667 | int err; |
668 | ||
e6445719 | 669 | if (type > OVS_TUNNEL_KEY_ATTR_MAX) { |
05da5898 JR |
670 | OVS_NLERR(log, "Tunnel attr %d out of range max %d", |
671 | type, OVS_TUNNEL_KEY_ATTR_MAX); | |
e6445719 PS |
672 | return -EINVAL; |
673 | } | |
674 | ||
982b5270 JG |
675 | if (!check_attr_len(nla_len(a), |
676 | ovs_tunnel_key_lens[type].len)) { | |
05da5898 | 677 | OVS_NLERR(log, "Tunnel attr %d has unexpected len %d expected %d", |
81bfe3c3 | 678 | type, nla_len(a), ovs_tunnel_key_lens[type].len); |
e6445719 PS |
679 | return -EINVAL; |
680 | } | |
681 | ||
682 | switch (type) { | |
683 | case OVS_TUNNEL_KEY_ATTR_ID: | |
684 | SW_FLOW_KEY_PUT(match, tun_key.tun_id, | |
685 | nla_get_be64(a), is_mask); | |
686 | tun_flags |= TUNNEL_KEY; | |
687 | break; | |
688 | case OVS_TUNNEL_KEY_ATTR_IPV4_SRC: | |
c1ea5d67 | 689 | SW_FLOW_KEY_PUT(match, tun_key.u.ipv4.src, |
67b61f6c | 690 | nla_get_in_addr(a), is_mask); |
6b26ba3a | 691 | ipv4 = true; |
e6445719 PS |
692 | break; |
693 | case OVS_TUNNEL_KEY_ATTR_IPV4_DST: | |
c1ea5d67 | 694 | SW_FLOW_KEY_PUT(match, tun_key.u.ipv4.dst, |
67b61f6c | 695 | nla_get_in_addr(a), is_mask); |
6b26ba3a JB |
696 | ipv4 = true; |
697 | break; | |
698 | case OVS_TUNNEL_KEY_ATTR_IPV6_SRC: | |
3d20f1f7 | 699 | SW_FLOW_KEY_PUT(match, tun_key.u.ipv6.src, |
6b26ba3a JB |
700 | nla_get_in6_addr(a), is_mask); |
701 | ipv6 = true; | |
702 | break; | |
703 | case OVS_TUNNEL_KEY_ATTR_IPV6_DST: | |
704 | SW_FLOW_KEY_PUT(match, tun_key.u.ipv6.dst, | |
705 | nla_get_in6_addr(a), is_mask); | |
706 | ipv6 = true; | |
e6445719 PS |
707 | break; |
708 | case OVS_TUNNEL_KEY_ATTR_TOS: | |
7c383fb2 | 709 | SW_FLOW_KEY_PUT(match, tun_key.tos, |
e6445719 PS |
710 | nla_get_u8(a), is_mask); |
711 | break; | |
712 | case OVS_TUNNEL_KEY_ATTR_TTL: | |
7c383fb2 | 713 | SW_FLOW_KEY_PUT(match, tun_key.ttl, |
e6445719 PS |
714 | nla_get_u8(a), is_mask); |
715 | ttl = true; | |
716 | break; | |
717 | case OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT: | |
718 | tun_flags |= TUNNEL_DONT_FRAGMENT; | |
719 | break; | |
720 | case OVS_TUNNEL_KEY_ATTR_CSUM: | |
721 | tun_flags |= TUNNEL_CSUM; | |
722 | break; | |
8f0aad6f WZ |
723 | case OVS_TUNNEL_KEY_ATTR_TP_SRC: |
724 | SW_FLOW_KEY_PUT(match, tun_key.tp_src, | |
725 | nla_get_be16(a), is_mask); | |
726 | break; | |
727 | case OVS_TUNNEL_KEY_ATTR_TP_DST: | |
728 | SW_FLOW_KEY_PUT(match, tun_key.tp_dst, | |
729 | nla_get_be16(a), is_mask); | |
730 | break; | |
67fa0341 JG |
731 | case OVS_TUNNEL_KEY_ATTR_OAM: |
732 | tun_flags |= TUNNEL_OAM; | |
733 | break; | |
f5796684 | 734 | case OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS: |
1dd144cf TG |
735 | if (opts_type) { |
736 | OVS_NLERR(log, "Multiple metadata blocks provided"); | |
737 | return -EINVAL; | |
738 | } | |
739 | ||
05da5898 JR |
740 | err = genev_tun_opt_from_nlattr(a, match, is_mask, log); |
741 | if (err) | |
742 | return err; | |
f5796684 | 743 | |
1dd144cf TG |
744 | tun_flags |= TUNNEL_GENEVE_OPT; |
745 | opts_type = type; | |
746 | break; | |
747 | case OVS_TUNNEL_KEY_ATTR_VXLAN_OPTS: | |
748 | if (opts_type) { | |
749 | OVS_NLERR(log, "Multiple metadata blocks provided"); | |
750 | return -EINVAL; | |
751 | } | |
752 | ||
753 | err = vxlan_tun_opt_from_nlattr(a, match, is_mask, log); | |
754 | if (err) | |
755 | return err; | |
756 | ||
757 | tun_flags |= TUNNEL_VXLAN_OPT; | |
758 | opts_type = type; | |
f5796684 | 759 | break; |
8f3dbfd7 KM |
760 | case OVS_TUNNEL_KEY_ATTR_PAD: |
761 | break; | |
fc1372f8 WT |
762 | case OVS_TUNNEL_KEY_ATTR_ERSPAN_OPTS: |
763 | if (opts_type) { | |
764 | OVS_NLERR(log, "Multiple metadata blocks provided"); | |
765 | return -EINVAL; | |
766 | } | |
767 | ||
768 | err = erspan_tun_opt_from_nlattr(a, match, is_mask, | |
769 | log); | |
770 | if (err) | |
771 | return err; | |
772 | ||
773 | tun_flags |= TUNNEL_ERSPAN_OPT; | |
774 | opts_type = type; | |
775 | break; | |
18b6f717 | 776 | case OVS_TUNNEL_KEY_ATTR_IPV4_INFO_BRIDGE: |
777 | info_bridge_mode = true; | |
778 | ipv4 = true; | |
779 | break; | |
e6445719 | 780 | default: |
6b26ba3a | 781 | OVS_NLERR(log, "Unknown IP tunnel attribute %d", |
f5796684 | 782 | type); |
e6445719 PS |
783 | return -EINVAL; |
784 | } | |
785 | } | |
786 | ||
787 | SW_FLOW_KEY_PUT(match, tun_key.tun_flags, tun_flags, is_mask); | |
00a93bab JB |
788 | if (is_mask) |
789 | SW_FLOW_KEY_MEMSET_FIELD(match, tun_proto, 0xff, true); | |
790 | else | |
6b26ba3a JB |
791 | SW_FLOW_KEY_PUT(match, tun_proto, ipv6 ? AF_INET6 : AF_INET, |
792 | false); | |
e6445719 PS |
793 | |
794 | if (rem > 0) { | |
6b26ba3a | 795 | OVS_NLERR(log, "IP tunnel attribute has %d unknown bytes.", |
05da5898 | 796 | rem); |
e6445719 PS |
797 | return -EINVAL; |
798 | } | |
799 | ||
6b26ba3a JB |
800 | if (ipv4 && ipv6) { |
801 | OVS_NLERR(log, "Mixed IPv4 and IPv6 tunnel attributes"); | |
802 | return -EINVAL; | |
803 | } | |
804 | ||
e6445719 | 805 | if (!is_mask) { |
6b26ba3a JB |
806 | if (!ipv4 && !ipv6) { |
807 | OVS_NLERR(log, "IP tunnel dst address not specified"); | |
808 | return -EINVAL; | |
809 | } | |
18b6f717 | 810 | if (ipv4) { |
811 | if (info_bridge_mode) { | |
812 | if (match->key->tun_key.u.ipv4.src || | |
813 | match->key->tun_key.u.ipv4.dst || | |
814 | match->key->tun_key.tp_src || | |
815 | match->key->tun_key.tp_dst || | |
816 | match->key->tun_key.ttl || | |
817 | match->key->tun_key.tos || | |
818 | tun_flags & ~TUNNEL_KEY) { | |
819 | OVS_NLERR(log, "IPv4 tun info is not correct"); | |
820 | return -EINVAL; | |
821 | } | |
822 | } else if (!match->key->tun_key.u.ipv4.dst) { | |
823 | OVS_NLERR(log, "IPv4 tunnel dst address is zero"); | |
824 | return -EINVAL; | |
825 | } | |
e6445719 | 826 | } |
6b26ba3a JB |
827 | if (ipv6 && ipv6_addr_any(&match->key->tun_key.u.ipv6.dst)) { |
828 | OVS_NLERR(log, "IPv6 tunnel dst address is zero"); | |
829 | return -EINVAL; | |
830 | } | |
e6445719 | 831 | |
18b6f717 | 832 | if (!ttl && !info_bridge_mode) { |
6b26ba3a | 833 | OVS_NLERR(log, "IP tunnel TTL not specified."); |
e6445719 PS |
834 | return -EINVAL; |
835 | } | |
836 | } | |
837 | ||
1dd144cf TG |
838 | return opts_type; |
839 | } | |
840 | ||
841 | static int vxlan_opt_to_nlattr(struct sk_buff *skb, | |
842 | const void *tun_opts, int swkey_tun_opts_len) | |
843 | { | |
614732ea | 844 | const struct vxlan_metadata *opts = tun_opts; |
1dd144cf TG |
845 | struct nlattr *nla; |
846 | ||
ae0be8de | 847 | nla = nla_nest_start_noflag(skb, OVS_TUNNEL_KEY_ATTR_VXLAN_OPTS); |
1dd144cf TG |
848 | if (!nla) |
849 | return -EMSGSIZE; | |
850 | ||
851 | if (nla_put_u32(skb, OVS_VXLAN_EXT_GBP, opts->gbp) < 0) | |
852 | return -EMSGSIZE; | |
853 | ||
854 | nla_nest_end(skb, nla); | |
e6445719 PS |
855 | return 0; |
856 | } | |
857 | ||
6b26ba3a JB |
858 | static int __ip_tun_to_nlattr(struct sk_buff *skb, |
859 | const struct ip_tunnel_key *output, | |
860 | const void *tun_opts, int swkey_tun_opts_len, | |
18b6f717 | 861 | unsigned short tun_proto, u8 mode) |
e6445719 | 862 | { |
e6445719 | 863 | if (output->tun_flags & TUNNEL_KEY && |
b46f6ded ND |
864 | nla_put_be64(skb, OVS_TUNNEL_KEY_ATTR_ID, output->tun_id, |
865 | OVS_TUNNEL_KEY_ATTR_PAD)) | |
e6445719 | 866 | return -EMSGSIZE; |
18b6f717 | 867 | |
868 | if (mode & IP_TUNNEL_INFO_BRIDGE) | |
869 | return nla_put_flag(skb, OVS_TUNNEL_KEY_ATTR_IPV4_INFO_BRIDGE) | |
870 | ? -EMSGSIZE : 0; | |
871 | ||
6b26ba3a JB |
872 | switch (tun_proto) { |
873 | case AF_INET: | |
874 | if (output->u.ipv4.src && | |
875 | nla_put_in_addr(skb, OVS_TUNNEL_KEY_ATTR_IPV4_SRC, | |
876 | output->u.ipv4.src)) | |
877 | return -EMSGSIZE; | |
878 | if (output->u.ipv4.dst && | |
879 | nla_put_in_addr(skb, OVS_TUNNEL_KEY_ATTR_IPV4_DST, | |
880 | output->u.ipv4.dst)) | |
881 | return -EMSGSIZE; | |
882 | break; | |
883 | case AF_INET6: | |
884 | if (!ipv6_addr_any(&output->u.ipv6.src) && | |
885 | nla_put_in6_addr(skb, OVS_TUNNEL_KEY_ATTR_IPV6_SRC, | |
886 | &output->u.ipv6.src)) | |
887 | return -EMSGSIZE; | |
888 | if (!ipv6_addr_any(&output->u.ipv6.dst) && | |
889 | nla_put_in6_addr(skb, OVS_TUNNEL_KEY_ATTR_IPV6_DST, | |
890 | &output->u.ipv6.dst)) | |
891 | return -EMSGSIZE; | |
892 | break; | |
893 | } | |
7c383fb2 JB |
894 | if (output->tos && |
895 | nla_put_u8(skb, OVS_TUNNEL_KEY_ATTR_TOS, output->tos)) | |
e6445719 | 896 | return -EMSGSIZE; |
7c383fb2 | 897 | if (nla_put_u8(skb, OVS_TUNNEL_KEY_ATTR_TTL, output->ttl)) |
e6445719 PS |
898 | return -EMSGSIZE; |
899 | if ((output->tun_flags & TUNNEL_DONT_FRAGMENT) && | |
67fa0341 | 900 | nla_put_flag(skb, OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT)) |
e6445719 PS |
901 | return -EMSGSIZE; |
902 | if ((output->tun_flags & TUNNEL_CSUM) && | |
67fa0341 JG |
903 | nla_put_flag(skb, OVS_TUNNEL_KEY_ATTR_CSUM)) |
904 | return -EMSGSIZE; | |
8f0aad6f WZ |
905 | if (output->tp_src && |
906 | nla_put_be16(skb, OVS_TUNNEL_KEY_ATTR_TP_SRC, output->tp_src)) | |
907 | return -EMSGSIZE; | |
908 | if (output->tp_dst && | |
909 | nla_put_be16(skb, OVS_TUNNEL_KEY_ATTR_TP_DST, output->tp_dst)) | |
910 | return -EMSGSIZE; | |
67fa0341 JG |
911 | if ((output->tun_flags & TUNNEL_OAM) && |
912 | nla_put_flag(skb, OVS_TUNNEL_KEY_ATTR_OAM)) | |
e6445719 | 913 | return -EMSGSIZE; |
fc4099f1 | 914 | if (swkey_tun_opts_len) { |
1dd144cf TG |
915 | if (output->tun_flags & TUNNEL_GENEVE_OPT && |
916 | nla_put(skb, OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS, | |
917 | swkey_tun_opts_len, tun_opts)) | |
918 | return -EMSGSIZE; | |
919 | else if (output->tun_flags & TUNNEL_VXLAN_OPT && | |
920 | vxlan_opt_to_nlattr(skb, tun_opts, swkey_tun_opts_len)) | |
921 | return -EMSGSIZE; | |
fc1372f8 WT |
922 | else if (output->tun_flags & TUNNEL_ERSPAN_OPT && |
923 | nla_put(skb, OVS_TUNNEL_KEY_ATTR_ERSPAN_OPTS, | |
924 | swkey_tun_opts_len, tun_opts)) | |
925 | return -EMSGSIZE; | |
1dd144cf | 926 | } |
e6445719 | 927 | |
e6445719 PS |
928 | return 0; |
929 | } | |
930 | ||
6b26ba3a JB |
931 | static int ip_tun_to_nlattr(struct sk_buff *skb, |
932 | const struct ip_tunnel_key *output, | |
933 | const void *tun_opts, int swkey_tun_opts_len, | |
18b6f717 | 934 | unsigned short tun_proto, u8 mode) |
f5796684 JG |
935 | { |
936 | struct nlattr *nla; | |
937 | int err; | |
938 | ||
ae0be8de | 939 | nla = nla_nest_start_noflag(skb, OVS_KEY_ATTR_TUNNEL); |
f5796684 JG |
940 | if (!nla) |
941 | return -EMSGSIZE; | |
942 | ||
6b26ba3a | 943 | err = __ip_tun_to_nlattr(skb, output, tun_opts, swkey_tun_opts_len, |
18b6f717 | 944 | tun_proto, mode); |
f5796684 JG |
945 | if (err) |
946 | return err; | |
947 | ||
948 | nla_nest_end(skb, nla); | |
949 | return 0; | |
950 | } | |
951 | ||
fc4099f1 PS |
952 | int ovs_nla_put_tunnel_info(struct sk_buff *skb, |
953 | struct ip_tunnel_info *tun_info) | |
8f0aad6f | 954 | { |
ba3e2084 DM |
955 | return __ip_tun_to_nlattr(skb, &tun_info->key, |
956 | ip_tunnel_info_opts(tun_info), | |
957 | tun_info->options_len, | |
18b6f717 | 958 | ip_tunnel_info_af(tun_info), tun_info->mode); |
8f0aad6f WZ |
959 | } |
960 | ||
018c1dda EG |
961 | static int encode_vlan_from_nlattrs(struct sw_flow_match *match, |
962 | const struct nlattr *a[], | |
963 | bool is_mask, bool inner) | |
964 | { | |
965 | __be16 tci = 0; | |
966 | __be16 tpid = 0; | |
967 | ||
968 | if (a[OVS_KEY_ATTR_VLAN]) | |
969 | tci = nla_get_be16(a[OVS_KEY_ATTR_VLAN]); | |
970 | ||
971 | if (a[OVS_KEY_ATTR_ETHERTYPE]) | |
972 | tpid = nla_get_be16(a[OVS_KEY_ATTR_ETHERTYPE]); | |
973 | ||
974 | if (likely(!inner)) { | |
975 | SW_FLOW_KEY_PUT(match, eth.vlan.tpid, tpid, is_mask); | |
976 | SW_FLOW_KEY_PUT(match, eth.vlan.tci, tci, is_mask); | |
977 | } else { | |
978 | SW_FLOW_KEY_PUT(match, eth.cvlan.tpid, tpid, is_mask); | |
979 | SW_FLOW_KEY_PUT(match, eth.cvlan.tci, tci, is_mask); | |
980 | } | |
981 | return 0; | |
982 | } | |
983 | ||
984 | static int validate_vlan_from_nlattrs(const struct sw_flow_match *match, | |
985 | u64 key_attrs, bool inner, | |
986 | const struct nlattr **a, bool log) | |
987 | { | |
988 | __be16 tci = 0; | |
989 | ||
990 | if (!((key_attrs & (1 << OVS_KEY_ATTR_ETHERNET)) && | |
991 | (key_attrs & (1 << OVS_KEY_ATTR_ETHERTYPE)) && | |
992 | eth_type_vlan(nla_get_be16(a[OVS_KEY_ATTR_ETHERTYPE])))) { | |
993 | /* Not a VLAN. */ | |
994 | return 0; | |
995 | } | |
996 | ||
997 | if (!((key_attrs & (1 << OVS_KEY_ATTR_VLAN)) && | |
998 | (key_attrs & (1 << OVS_KEY_ATTR_ENCAP)))) { | |
999 | OVS_NLERR(log, "Invalid %s frame", (inner) ? "C-VLAN" : "VLAN"); | |
1000 | return -EINVAL; | |
1001 | } | |
1002 | ||
1003 | if (a[OVS_KEY_ATTR_VLAN]) | |
1004 | tci = nla_get_be16(a[OVS_KEY_ATTR_VLAN]); | |
1005 | ||
9df46aef | 1006 | if (!(tci & htons(VLAN_CFI_MASK))) { |
018c1dda | 1007 | if (tci) { |
9df46aef | 1008 | OVS_NLERR(log, "%s TCI does not have VLAN_CFI_MASK bit set.", |
018c1dda EG |
1009 | (inner) ? "C-VLAN" : "VLAN"); |
1010 | return -EINVAL; | |
1011 | } else if (nla_len(a[OVS_KEY_ATTR_ENCAP])) { | |
1012 | /* Corner case for truncated VLAN header. */ | |
1013 | OVS_NLERR(log, "Truncated %s header has non-zero encap attribute.", | |
1014 | (inner) ? "C-VLAN" : "VLAN"); | |
1015 | return -EINVAL; | |
1016 | } | |
1017 | } | |
1018 | ||
1019 | return 1; | |
1020 | } | |
1021 | ||
1022 | static int validate_vlan_mask_from_nlattrs(const struct sw_flow_match *match, | |
1023 | u64 key_attrs, bool inner, | |
1024 | const struct nlattr **a, bool log) | |
1025 | { | |
1026 | __be16 tci = 0; | |
1027 | __be16 tpid = 0; | |
1028 | bool encap_valid = !!(match->key->eth.vlan.tci & | |
9df46aef | 1029 | htons(VLAN_CFI_MASK)); |
018c1dda | 1030 | bool i_encap_valid = !!(match->key->eth.cvlan.tci & |
9df46aef | 1031 | htons(VLAN_CFI_MASK)); |
018c1dda EG |
1032 | |
1033 | if (!(key_attrs & (1 << OVS_KEY_ATTR_ENCAP))) { | |
1034 | /* Not a VLAN. */ | |
1035 | return 0; | |
1036 | } | |
1037 | ||
1038 | if ((!inner && !encap_valid) || (inner && !i_encap_valid)) { | |
1039 | OVS_NLERR(log, "Encap mask attribute is set for non-%s frame.", | |
1040 | (inner) ? "C-VLAN" : "VLAN"); | |
1041 | return -EINVAL; | |
1042 | } | |
1043 | ||
1044 | if (a[OVS_KEY_ATTR_VLAN]) | |
1045 | tci = nla_get_be16(a[OVS_KEY_ATTR_VLAN]); | |
1046 | ||
1047 | if (a[OVS_KEY_ATTR_ETHERTYPE]) | |
1048 | tpid = nla_get_be16(a[OVS_KEY_ATTR_ETHERTYPE]); | |
1049 | ||
1050 | if (tpid != htons(0xffff)) { | |
1051 | OVS_NLERR(log, "Must have an exact match on %s TPID (mask=%x).", | |
1052 | (inner) ? "C-VLAN" : "VLAN", ntohs(tpid)); | |
1053 | return -EINVAL; | |
1054 | } | |
9df46aef MM |
1055 | if (!(tci & htons(VLAN_CFI_MASK))) { |
1056 | OVS_NLERR(log, "%s TCI mask does not have exact match for VLAN_CFI_MASK bit.", | |
018c1dda EG |
1057 | (inner) ? "C-VLAN" : "VLAN"); |
1058 | return -EINVAL; | |
1059 | } | |
1060 | ||
1061 | return 1; | |
1062 | } | |
1063 | ||
1064 | static int __parse_vlan_from_nlattrs(struct sw_flow_match *match, | |
1065 | u64 *key_attrs, bool inner, | |
1066 | const struct nlattr **a, bool is_mask, | |
1067 | bool log) | |
1068 | { | |
1069 | int err; | |
1070 | const struct nlattr *encap; | |
1071 | ||
1072 | if (!is_mask) | |
1073 | err = validate_vlan_from_nlattrs(match, *key_attrs, inner, | |
1074 | a, log); | |
1075 | else | |
1076 | err = validate_vlan_mask_from_nlattrs(match, *key_attrs, inner, | |
1077 | a, log); | |
1078 | if (err <= 0) | |
1079 | return err; | |
1080 | ||
1081 | err = encode_vlan_from_nlattrs(match, a, is_mask, inner); | |
1082 | if (err) | |
1083 | return err; | |
1084 | ||
1085 | *key_attrs &= ~(1 << OVS_KEY_ATTR_ENCAP); | |
1086 | *key_attrs &= ~(1 << OVS_KEY_ATTR_VLAN); | |
1087 | *key_attrs &= ~(1 << OVS_KEY_ATTR_ETHERTYPE); | |
1088 | ||
1089 | encap = a[OVS_KEY_ATTR_ENCAP]; | |
1090 | ||
1091 | if (!is_mask) | |
1092 | err = parse_flow_nlattrs(encap, a, key_attrs, log); | |
1093 | else | |
1094 | err = parse_flow_mask_nlattrs(encap, a, key_attrs, log); | |
1095 | ||
1096 | return err; | |
1097 | } | |
1098 | ||
1099 | static int parse_vlan_from_nlattrs(struct sw_flow_match *match, | |
1100 | u64 *key_attrs, const struct nlattr **a, | |
1101 | bool is_mask, bool log) | |
1102 | { | |
1103 | int err; | |
1104 | bool encap_valid = false; | |
1105 | ||
1106 | err = __parse_vlan_from_nlattrs(match, key_attrs, false, a, | |
1107 | is_mask, log); | |
1108 | if (err) | |
1109 | return err; | |
1110 | ||
9df46aef | 1111 | encap_valid = !!(match->key->eth.vlan.tci & htons(VLAN_CFI_MASK)); |
018c1dda EG |
1112 | if (encap_valid) { |
1113 | err = __parse_vlan_from_nlattrs(match, key_attrs, true, a, | |
1114 | is_mask, log); | |
1115 | if (err) | |
1116 | return err; | |
1117 | } | |
1118 | ||
1119 | return 0; | |
1120 | } | |
1121 | ||
0a6410fb JB |
1122 | static int parse_eth_type_from_nlattrs(struct sw_flow_match *match, |
1123 | u64 *attrs, const struct nlattr **a, | |
1124 | bool is_mask, bool log) | |
1125 | { | |
1126 | __be16 eth_type; | |
1127 | ||
1128 | eth_type = nla_get_be16(a[OVS_KEY_ATTR_ETHERTYPE]); | |
1129 | if (is_mask) { | |
1130 | /* Always exact match EtherType. */ | |
1131 | eth_type = htons(0xffff); | |
1132 | } else if (!eth_proto_is_802_3(eth_type)) { | |
1133 | OVS_NLERR(log, "EtherType %x is less than min %x", | |
1134 | ntohs(eth_type), ETH_P_802_3_MIN); | |
1135 | return -EINVAL; | |
1136 | } | |
1137 | ||
1138 | SW_FLOW_KEY_PUT(match, eth.type, eth_type, is_mask); | |
1139 | *attrs &= ~(1 << OVS_KEY_ATTR_ETHERTYPE); | |
1140 | return 0; | |
1141 | } | |
1142 | ||
c2ac6673 JS |
1143 | static int metadata_from_nlattrs(struct net *net, struct sw_flow_match *match, |
1144 | u64 *attrs, const struct nlattr **a, | |
1145 | bool is_mask, bool log) | |
e6445719 | 1146 | { |
0a6410fb JB |
1147 | u8 mac_proto = MAC_PROTO_ETHERNET; |
1148 | ||
971427f3 AZ |
1149 | if (*attrs & (1 << OVS_KEY_ATTR_DP_HASH)) { |
1150 | u32 hash_val = nla_get_u32(a[OVS_KEY_ATTR_DP_HASH]); | |
1151 | ||
1152 | SW_FLOW_KEY_PUT(match, ovs_flow_hash, hash_val, is_mask); | |
1153 | *attrs &= ~(1 << OVS_KEY_ATTR_DP_HASH); | |
1154 | } | |
1155 | ||
1156 | if (*attrs & (1 << OVS_KEY_ATTR_RECIRC_ID)) { | |
1157 | u32 recirc_id = nla_get_u32(a[OVS_KEY_ATTR_RECIRC_ID]); | |
1158 | ||
1159 | SW_FLOW_KEY_PUT(match, recirc_id, recirc_id, is_mask); | |
1160 | *attrs &= ~(1 << OVS_KEY_ATTR_RECIRC_ID); | |
1161 | } | |
1162 | ||
e6445719 PS |
1163 | if (*attrs & (1 << OVS_KEY_ATTR_PRIORITY)) { |
1164 | SW_FLOW_KEY_PUT(match, phy.priority, | |
1165 | nla_get_u32(a[OVS_KEY_ATTR_PRIORITY]), is_mask); | |
1166 | *attrs &= ~(1 << OVS_KEY_ATTR_PRIORITY); | |
1167 | } | |
1168 | ||
1169 | if (*attrs & (1 << OVS_KEY_ATTR_IN_PORT)) { | |
1170 | u32 in_port = nla_get_u32(a[OVS_KEY_ATTR_IN_PORT]); | |
1171 | ||
426cda5c | 1172 | if (is_mask) { |
e6445719 | 1173 | in_port = 0xffffffff; /* Always exact match in_port. */ |
426cda5c | 1174 | } else if (in_port >= DP_MAX_PORTS) { |
05da5898 | 1175 | OVS_NLERR(log, "Port %d exceeds max allowable %d", |
426cda5c | 1176 | in_port, DP_MAX_PORTS); |
e6445719 | 1177 | return -EINVAL; |
426cda5c | 1178 | } |
e6445719 PS |
1179 | |
1180 | SW_FLOW_KEY_PUT(match, phy.in_port, in_port, is_mask); | |
1181 | *attrs &= ~(1 << OVS_KEY_ATTR_IN_PORT); | |
1182 | } else if (!is_mask) { | |
1183 | SW_FLOW_KEY_PUT(match, phy.in_port, DP_MAX_PORTS, is_mask); | |
1184 | } | |
1185 | ||
1186 | if (*attrs & (1 << OVS_KEY_ATTR_SKB_MARK)) { | |
1187 | uint32_t mark = nla_get_u32(a[OVS_KEY_ATTR_SKB_MARK]); | |
1188 | ||
1189 | SW_FLOW_KEY_PUT(match, phy.skb_mark, mark, is_mask); | |
1190 | *attrs &= ~(1 << OVS_KEY_ATTR_SKB_MARK); | |
1191 | } | |
1192 | if (*attrs & (1 << OVS_KEY_ATTR_TUNNEL)) { | |
6b26ba3a JB |
1193 | if (ip_tun_from_nlattr(a[OVS_KEY_ATTR_TUNNEL], match, |
1194 | is_mask, log) < 0) | |
e6445719 PS |
1195 | return -EINVAL; |
1196 | *attrs &= ~(1 << OVS_KEY_ATTR_TUNNEL); | |
1197 | } | |
7f8a436e JS |
1198 | |
1199 | if (*attrs & (1 << OVS_KEY_ATTR_CT_STATE) && | |
c2ac6673 | 1200 | ovs_ct_verify(net, OVS_KEY_ATTR_CT_STATE)) { |
fbccce59 | 1201 | u32 ct_state = nla_get_u32(a[OVS_KEY_ATTR_CT_STATE]); |
7f8a436e | 1202 | |
9e384715 | 1203 | if (ct_state & ~CT_SUPPORTED_MASK) { |
fbccce59 | 1204 | OVS_NLERR(log, "ct_state flags %08x unsupported", |
6f225952 JS |
1205 | ct_state); |
1206 | return -EINVAL; | |
1207 | } | |
7f8a436e | 1208 | |
316d4d78 | 1209 | SW_FLOW_KEY_PUT(match, ct_state, ct_state, is_mask); |
7f8a436e JS |
1210 | *attrs &= ~(1ULL << OVS_KEY_ATTR_CT_STATE); |
1211 | } | |
1212 | if (*attrs & (1 << OVS_KEY_ATTR_CT_ZONE) && | |
c2ac6673 | 1213 | ovs_ct_verify(net, OVS_KEY_ATTR_CT_ZONE)) { |
7f8a436e JS |
1214 | u16 ct_zone = nla_get_u16(a[OVS_KEY_ATTR_CT_ZONE]); |
1215 | ||
316d4d78 | 1216 | SW_FLOW_KEY_PUT(match, ct_zone, ct_zone, is_mask); |
7f8a436e JS |
1217 | *attrs &= ~(1ULL << OVS_KEY_ATTR_CT_ZONE); |
1218 | } | |
182e3042 | 1219 | if (*attrs & (1 << OVS_KEY_ATTR_CT_MARK) && |
c2ac6673 | 1220 | ovs_ct_verify(net, OVS_KEY_ATTR_CT_MARK)) { |
182e3042 JS |
1221 | u32 mark = nla_get_u32(a[OVS_KEY_ATTR_CT_MARK]); |
1222 | ||
1223 | SW_FLOW_KEY_PUT(match, ct.mark, mark, is_mask); | |
1224 | *attrs &= ~(1ULL << OVS_KEY_ATTR_CT_MARK); | |
1225 | } | |
33db4125 JS |
1226 | if (*attrs & (1 << OVS_KEY_ATTR_CT_LABELS) && |
1227 | ovs_ct_verify(net, OVS_KEY_ATTR_CT_LABELS)) { | |
1228 | const struct ovs_key_ct_labels *cl; | |
c2ac6673 | 1229 | |
33db4125 JS |
1230 | cl = nla_data(a[OVS_KEY_ATTR_CT_LABELS]); |
1231 | SW_FLOW_KEY_MEMCPY(match, ct.labels, cl->ct_labels, | |
c2ac6673 | 1232 | sizeof(*cl), is_mask); |
33db4125 | 1233 | *attrs &= ~(1ULL << OVS_KEY_ATTR_CT_LABELS); |
c2ac6673 | 1234 | } |
9dd7f890 JR |
1235 | if (*attrs & (1ULL << OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV4)) { |
1236 | const struct ovs_key_ct_tuple_ipv4 *ct; | |
1237 | ||
1238 | ct = nla_data(a[OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV4]); | |
1239 | ||
1240 | SW_FLOW_KEY_PUT(match, ipv4.ct_orig.src, ct->ipv4_src, is_mask); | |
1241 | SW_FLOW_KEY_PUT(match, ipv4.ct_orig.dst, ct->ipv4_dst, is_mask); | |
1242 | SW_FLOW_KEY_PUT(match, ct.orig_tp.src, ct->src_port, is_mask); | |
1243 | SW_FLOW_KEY_PUT(match, ct.orig_tp.dst, ct->dst_port, is_mask); | |
316d4d78 | 1244 | SW_FLOW_KEY_PUT(match, ct_orig_proto, ct->ipv4_proto, is_mask); |
9dd7f890 JR |
1245 | *attrs &= ~(1ULL << OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV4); |
1246 | } | |
1247 | if (*attrs & (1ULL << OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV6)) { | |
1248 | const struct ovs_key_ct_tuple_ipv6 *ct; | |
1249 | ||
1250 | ct = nla_data(a[OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV6]); | |
1251 | ||
1252 | SW_FLOW_KEY_MEMCPY(match, ipv6.ct_orig.src, &ct->ipv6_src, | |
1253 | sizeof(match->key->ipv6.ct_orig.src), | |
1254 | is_mask); | |
1255 | SW_FLOW_KEY_MEMCPY(match, ipv6.ct_orig.dst, &ct->ipv6_dst, | |
1256 | sizeof(match->key->ipv6.ct_orig.dst), | |
1257 | is_mask); | |
1258 | SW_FLOW_KEY_PUT(match, ct.orig_tp.src, ct->src_port, is_mask); | |
1259 | SW_FLOW_KEY_PUT(match, ct.orig_tp.dst, ct->dst_port, is_mask); | |
316d4d78 | 1260 | SW_FLOW_KEY_PUT(match, ct_orig_proto, ct->ipv6_proto, is_mask); |
9dd7f890 JR |
1261 | *attrs &= ~(1ULL << OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV6); |
1262 | } | |
329f45bc | 1263 | |
0a6410fb JB |
1264 | /* For layer 3 packets the Ethernet type is provided |
1265 | * and treated as metadata but no MAC addresses are provided. | |
1266 | */ | |
1267 | if (!(*attrs & (1ULL << OVS_KEY_ATTR_ETHERNET)) && | |
1268 | (*attrs & (1ULL << OVS_KEY_ATTR_ETHERTYPE))) | |
1269 | mac_proto = MAC_PROTO_NONE; | |
1270 | ||
329f45bc | 1271 | /* Always exact match mac_proto */ |
0a6410fb JB |
1272 | SW_FLOW_KEY_PUT(match, mac_proto, is_mask ? 0xff : mac_proto, is_mask); |
1273 | ||
1274 | if (mac_proto == MAC_PROTO_NONE) | |
1275 | return parse_eth_type_from_nlattrs(match, attrs, a, is_mask, | |
1276 | log); | |
329f45bc | 1277 | |
e6445719 PS |
1278 | return 0; |
1279 | } | |
1280 | ||
b2d0f5d5 YY |
1281 | int nsh_hdr_from_nlattr(const struct nlattr *attr, |
1282 | struct nshhdr *nh, size_t size) | |
1283 | { | |
1284 | struct nlattr *a; | |
1285 | int rem; | |
1286 | u8 flags = 0; | |
1287 | u8 ttl = 0; | |
1288 | int mdlen = 0; | |
1289 | ||
1290 | /* validate_nsh has check this, so we needn't do duplicate check here | |
1291 | */ | |
1292 | if (size < NSH_BASE_HDR_LEN) | |
1293 | return -ENOBUFS; | |
1294 | ||
1295 | nla_for_each_nested(a, attr, rem) { | |
1296 | int type = nla_type(a); | |
1297 | ||
1298 | switch (type) { | |
1299 | case OVS_NSH_KEY_ATTR_BASE: { | |
1300 | const struct ovs_nsh_key_base *base = nla_data(a); | |
1301 | ||
1302 | flags = base->flags; | |
1303 | ttl = base->ttl; | |
1304 | nh->np = base->np; | |
1305 | nh->mdtype = base->mdtype; | |
1306 | nh->path_hdr = base->path_hdr; | |
1307 | break; | |
1308 | } | |
1309 | case OVS_NSH_KEY_ATTR_MD1: | |
1310 | mdlen = nla_len(a); | |
1311 | if (mdlen > size - NSH_BASE_HDR_LEN) | |
1312 | return -ENOBUFS; | |
1313 | memcpy(&nh->md1, nla_data(a), mdlen); | |
1314 | break; | |
1315 | ||
1316 | case OVS_NSH_KEY_ATTR_MD2: | |
1317 | mdlen = nla_len(a); | |
1318 | if (mdlen > size - NSH_BASE_HDR_LEN) | |
1319 | return -ENOBUFS; | |
1320 | memcpy(&nh->md2, nla_data(a), mdlen); | |
1321 | break; | |
1322 | ||
1323 | default: | |
1324 | return -EINVAL; | |
1325 | } | |
1326 | } | |
1327 | ||
1328 | /* nsh header length = NSH_BASE_HDR_LEN + mdlen */ | |
1329 | nh->ver_flags_ttl_len = 0; | |
1330 | nsh_set_flags_ttl_len(nh, flags, ttl, NSH_BASE_HDR_LEN + mdlen); | |
1331 | ||
1332 | return 0; | |
1333 | } | |
1334 | ||
1335 | int nsh_key_from_nlattr(const struct nlattr *attr, | |
1336 | struct ovs_key_nsh *nsh, struct ovs_key_nsh *nsh_mask) | |
1337 | { | |
1338 | struct nlattr *a; | |
1339 | int rem; | |
1340 | ||
1341 | /* validate_nsh has check this, so we needn't do duplicate check here | |
1342 | */ | |
1343 | nla_for_each_nested(a, attr, rem) { | |
1344 | int type = nla_type(a); | |
1345 | ||
1346 | switch (type) { | |
1347 | case OVS_NSH_KEY_ATTR_BASE: { | |
1348 | const struct ovs_nsh_key_base *base = nla_data(a); | |
1349 | const struct ovs_nsh_key_base *base_mask = base + 1; | |
1350 | ||
1351 | nsh->base = *base; | |
1352 | nsh_mask->base = *base_mask; | |
1353 | break; | |
1354 | } | |
1355 | case OVS_NSH_KEY_ATTR_MD1: { | |
1356 | const struct ovs_nsh_key_md1 *md1 = nla_data(a); | |
1357 | const struct ovs_nsh_key_md1 *md1_mask = md1 + 1; | |
1358 | ||
1359 | memcpy(nsh->context, md1->context, sizeof(*md1)); | |
1360 | memcpy(nsh_mask->context, md1_mask->context, | |
1361 | sizeof(*md1_mask)); | |
1362 | break; | |
1363 | } | |
1364 | case OVS_NSH_KEY_ATTR_MD2: | |
1365 | /* Not supported yet */ | |
1366 | return -ENOTSUPP; | |
1367 | default: | |
1368 | return -EINVAL; | |
1369 | } | |
1370 | } | |
1371 | ||
1372 | return 0; | |
1373 | } | |
1374 | ||
1375 | static int nsh_key_put_from_nlattr(const struct nlattr *attr, | |
1376 | struct sw_flow_match *match, bool is_mask, | |
1377 | bool is_push_nsh, bool log) | |
1378 | { | |
1379 | struct nlattr *a; | |
1380 | int rem; | |
1381 | bool has_base = false; | |
1382 | bool has_md1 = false; | |
1383 | bool has_md2 = false; | |
1384 | u8 mdtype = 0; | |
1385 | int mdlen = 0; | |
1386 | ||
1387 | if (WARN_ON(is_push_nsh && is_mask)) | |
1388 | return -EINVAL; | |
1389 | ||
1390 | nla_for_each_nested(a, attr, rem) { | |
1391 | int type = nla_type(a); | |
1392 | int i; | |
1393 | ||
1394 | if (type > OVS_NSH_KEY_ATTR_MAX) { | |
1395 | OVS_NLERR(log, "nsh attr %d is out of range max %d", | |
1396 | type, OVS_NSH_KEY_ATTR_MAX); | |
1397 | return -EINVAL; | |
1398 | } | |
1399 | ||
1400 | if (!check_attr_len(nla_len(a), | |
1401 | ovs_nsh_key_attr_lens[type].len)) { | |
1402 | OVS_NLERR( | |
1403 | log, | |
1404 | "nsh attr %d has unexpected len %d expected %d", | |
1405 | type, | |
1406 | nla_len(a), | |
1407 | ovs_nsh_key_attr_lens[type].len | |
1408 | ); | |
1409 | return -EINVAL; | |
1410 | } | |
1411 | ||
1412 | switch (type) { | |
1413 | case OVS_NSH_KEY_ATTR_BASE: { | |
1414 | const struct ovs_nsh_key_base *base = nla_data(a); | |
1415 | ||
1416 | has_base = true; | |
1417 | mdtype = base->mdtype; | |
1418 | SW_FLOW_KEY_PUT(match, nsh.base.flags, | |
1419 | base->flags, is_mask); | |
1420 | SW_FLOW_KEY_PUT(match, nsh.base.ttl, | |
1421 | base->ttl, is_mask); | |
1422 | SW_FLOW_KEY_PUT(match, nsh.base.mdtype, | |
1423 | base->mdtype, is_mask); | |
1424 | SW_FLOW_KEY_PUT(match, nsh.base.np, | |
1425 | base->np, is_mask); | |
1426 | SW_FLOW_KEY_PUT(match, nsh.base.path_hdr, | |
1427 | base->path_hdr, is_mask); | |
1428 | break; | |
1429 | } | |
1430 | case OVS_NSH_KEY_ATTR_MD1: { | |
1431 | const struct ovs_nsh_key_md1 *md1 = nla_data(a); | |
1432 | ||
1433 | has_md1 = true; | |
1434 | for (i = 0; i < NSH_MD1_CONTEXT_SIZE; i++) | |
1435 | SW_FLOW_KEY_PUT(match, nsh.context[i], | |
1436 | md1->context[i], is_mask); | |
1437 | break; | |
1438 | } | |
1439 | case OVS_NSH_KEY_ATTR_MD2: | |
1440 | if (!is_push_nsh) /* Not supported MD type 2 yet */ | |
1441 | return -ENOTSUPP; | |
1442 | ||
1443 | has_md2 = true; | |
1444 | mdlen = nla_len(a); | |
1445 | if (mdlen > NSH_CTX_HDRS_MAX_LEN || mdlen <= 0) { | |
1446 | OVS_NLERR( | |
1447 | log, | |
1448 | "Invalid MD length %d for MD type %d", | |
1449 | mdlen, | |
1450 | mdtype | |
1451 | ); | |
1452 | return -EINVAL; | |
1453 | } | |
1454 | break; | |
1455 | default: | |
1456 | OVS_NLERR(log, "Unknown nsh attribute %d", | |
1457 | type); | |
1458 | return -EINVAL; | |
1459 | } | |
1460 | } | |
1461 | ||
1462 | if (rem > 0) { | |
1463 | OVS_NLERR(log, "nsh attribute has %d unknown bytes.", rem); | |
1464 | return -EINVAL; | |
1465 | } | |
1466 | ||
1467 | if (has_md1 && has_md2) { | |
1468 | OVS_NLERR( | |
1469 | 1, | |
1470 | "invalid nsh attribute: md1 and md2 are exclusive." | |
1471 | ); | |
1472 | return -EINVAL; | |
1473 | } | |
1474 | ||
1475 | if (!is_mask) { | |
1476 | if ((has_md1 && mdtype != NSH_M_TYPE1) || | |
1477 | (has_md2 && mdtype != NSH_M_TYPE2)) { | |
1478 | OVS_NLERR(1, "nsh attribute has unmatched MD type %d.", | |
1479 | mdtype); | |
1480 | return -EINVAL; | |
1481 | } | |
1482 | ||
1483 | if (is_push_nsh && | |
1484 | (!has_base || (!has_md1 && !has_md2))) { | |
1485 | OVS_NLERR( | |
1486 | 1, | |
1487 | "push_nsh: missing base or metadata attributes" | |
1488 | ); | |
1489 | return -EINVAL; | |
1490 | } | |
1491 | } | |
1492 | ||
1493 | return 0; | |
1494 | } | |
1495 | ||
c2ac6673 JS |
1496 | static int ovs_key_from_nlattrs(struct net *net, struct sw_flow_match *match, |
1497 | u64 attrs, const struct nlattr **a, | |
1498 | bool is_mask, bool log) | |
e6445719 PS |
1499 | { |
1500 | int err; | |
e6445719 | 1501 | |
c2ac6673 | 1502 | err = metadata_from_nlattrs(net, match, &attrs, a, is_mask, log); |
e6445719 PS |
1503 | if (err) |
1504 | return err; | |
1505 | ||
1506 | if (attrs & (1 << OVS_KEY_ATTR_ETHERNET)) { | |
1507 | const struct ovs_key_ethernet *eth_key; | |
1508 | ||
1509 | eth_key = nla_data(a[OVS_KEY_ATTR_ETHERNET]); | |
1510 | SW_FLOW_KEY_MEMCPY(match, eth.src, | |
1511 | eth_key->eth_src, ETH_ALEN, is_mask); | |
1512 | SW_FLOW_KEY_MEMCPY(match, eth.dst, | |
1513 | eth_key->eth_dst, ETH_ALEN, is_mask); | |
1514 | attrs &= ~(1 << OVS_KEY_ATTR_ETHERNET); | |
e6445719 | 1515 | |
0a6410fb JB |
1516 | if (attrs & (1 << OVS_KEY_ATTR_VLAN)) { |
1517 | /* VLAN attribute is always parsed before getting here since it | |
1518 | * may occur multiple times. | |
1519 | */ | |
1520 | OVS_NLERR(log, "VLAN attribute unexpected."); | |
e6445719 PS |
1521 | return -EINVAL; |
1522 | } | |
1523 | ||
0a6410fb JB |
1524 | if (attrs & (1 << OVS_KEY_ATTR_ETHERTYPE)) { |
1525 | err = parse_eth_type_from_nlattrs(match, &attrs, a, is_mask, | |
1526 | log); | |
1527 | if (err) | |
1528 | return err; | |
1529 | } else if (!is_mask) { | |
1530 | SW_FLOW_KEY_PUT(match, eth.type, htons(ETH_P_802_2), is_mask); | |
1531 | } | |
1532 | } else if (!match->key->eth.type) { | |
1533 | OVS_NLERR(log, "Either Ethernet header or EtherType is required."); | |
1534 | return -EINVAL; | |
e6445719 PS |
1535 | } |
1536 | ||
1537 | if (attrs & (1 << OVS_KEY_ATTR_IPV4)) { | |
1538 | const struct ovs_key_ipv4 *ipv4_key; | |
1539 | ||
1540 | ipv4_key = nla_data(a[OVS_KEY_ATTR_IPV4]); | |
1541 | if (!is_mask && ipv4_key->ipv4_frag > OVS_FRAG_TYPE_MAX) { | |
05da5898 JR |
1542 | OVS_NLERR(log, "IPv4 frag type %d is out of range max %d", |
1543 | ipv4_key->ipv4_frag, OVS_FRAG_TYPE_MAX); | |
e6445719 PS |
1544 | return -EINVAL; |
1545 | } | |
1546 | SW_FLOW_KEY_PUT(match, ip.proto, | |
1547 | ipv4_key->ipv4_proto, is_mask); | |
1548 | SW_FLOW_KEY_PUT(match, ip.tos, | |
1549 | ipv4_key->ipv4_tos, is_mask); | |
1550 | SW_FLOW_KEY_PUT(match, ip.ttl, | |
1551 | ipv4_key->ipv4_ttl, is_mask); | |
1552 | SW_FLOW_KEY_PUT(match, ip.frag, | |
1553 | ipv4_key->ipv4_frag, is_mask); | |
1554 | SW_FLOW_KEY_PUT(match, ipv4.addr.src, | |
1555 | ipv4_key->ipv4_src, is_mask); | |
1556 | SW_FLOW_KEY_PUT(match, ipv4.addr.dst, | |
1557 | ipv4_key->ipv4_dst, is_mask); | |
1558 | attrs &= ~(1 << OVS_KEY_ATTR_IPV4); | |
1559 | } | |
1560 | ||
1561 | if (attrs & (1 << OVS_KEY_ATTR_IPV6)) { | |
1562 | const struct ovs_key_ipv6 *ipv6_key; | |
1563 | ||
1564 | ipv6_key = nla_data(a[OVS_KEY_ATTR_IPV6]); | |
1565 | if (!is_mask && ipv6_key->ipv6_frag > OVS_FRAG_TYPE_MAX) { | |
05da5898 JR |
1566 | OVS_NLERR(log, "IPv6 frag type %d is out of range max %d", |
1567 | ipv6_key->ipv6_frag, OVS_FRAG_TYPE_MAX); | |
e6445719 PS |
1568 | return -EINVAL; |
1569 | } | |
fecaef85 | 1570 | |
d3052bb5 | 1571 | if (!is_mask && ipv6_key->ipv6_label & htonl(0xFFF00000)) { |
0ed80da5 | 1572 | OVS_NLERR(log, "IPv6 flow label %x is out of range (max=%x)", |
fecaef85 JR |
1573 | ntohl(ipv6_key->ipv6_label), (1 << 20) - 1); |
1574 | return -EINVAL; | |
1575 | } | |
1576 | ||
e6445719 PS |
1577 | SW_FLOW_KEY_PUT(match, ipv6.label, |
1578 | ipv6_key->ipv6_label, is_mask); | |
1579 | SW_FLOW_KEY_PUT(match, ip.proto, | |
1580 | ipv6_key->ipv6_proto, is_mask); | |
1581 | SW_FLOW_KEY_PUT(match, ip.tos, | |
1582 | ipv6_key->ipv6_tclass, is_mask); | |
1583 | SW_FLOW_KEY_PUT(match, ip.ttl, | |
1584 | ipv6_key->ipv6_hlimit, is_mask); | |
1585 | SW_FLOW_KEY_PUT(match, ip.frag, | |
1586 | ipv6_key->ipv6_frag, is_mask); | |
1587 | SW_FLOW_KEY_MEMCPY(match, ipv6.addr.src, | |
1588 | ipv6_key->ipv6_src, | |
1589 | sizeof(match->key->ipv6.addr.src), | |
1590 | is_mask); | |
1591 | SW_FLOW_KEY_MEMCPY(match, ipv6.addr.dst, | |
1592 | ipv6_key->ipv6_dst, | |
1593 | sizeof(match->key->ipv6.addr.dst), | |
1594 | is_mask); | |
1595 | ||
1596 | attrs &= ~(1 << OVS_KEY_ATTR_IPV6); | |
1597 | } | |
1598 | ||
1599 | if (attrs & (1 << OVS_KEY_ATTR_ARP)) { | |
1600 | const struct ovs_key_arp *arp_key; | |
1601 | ||
1602 | arp_key = nla_data(a[OVS_KEY_ATTR_ARP]); | |
1603 | if (!is_mask && (arp_key->arp_op & htons(0xff00))) { | |
05da5898 | 1604 | OVS_NLERR(log, "Unknown ARP opcode (opcode=%d).", |
e6445719 PS |
1605 | arp_key->arp_op); |
1606 | return -EINVAL; | |
1607 | } | |
1608 | ||
1609 | SW_FLOW_KEY_PUT(match, ipv4.addr.src, | |
1610 | arp_key->arp_sip, is_mask); | |
1611 | SW_FLOW_KEY_PUT(match, ipv4.addr.dst, | |
1612 | arp_key->arp_tip, is_mask); | |
1613 | SW_FLOW_KEY_PUT(match, ip.proto, | |
1614 | ntohs(arp_key->arp_op), is_mask); | |
1615 | SW_FLOW_KEY_MEMCPY(match, ipv4.arp.sha, | |
1616 | arp_key->arp_sha, ETH_ALEN, is_mask); | |
1617 | SW_FLOW_KEY_MEMCPY(match, ipv4.arp.tha, | |
1618 | arp_key->arp_tha, ETH_ALEN, is_mask); | |
1619 | ||
1620 | attrs &= ~(1 << OVS_KEY_ATTR_ARP); | |
1621 | } | |
1622 | ||
b2d0f5d5 YY |
1623 | if (attrs & (1 << OVS_KEY_ATTR_NSH)) { |
1624 | if (nsh_key_put_from_nlattr(a[OVS_KEY_ATTR_NSH], match, | |
1625 | is_mask, false, log) < 0) | |
1626 | return -EINVAL; | |
1627 | attrs &= ~(1 << OVS_KEY_ATTR_NSH); | |
1628 | } | |
1629 | ||
25cd9ba0 SH |
1630 | if (attrs & (1 << OVS_KEY_ATTR_MPLS)) { |
1631 | const struct ovs_key_mpls *mpls_key; | |
fbdcdd78 MV |
1632 | u32 hdr_len; |
1633 | u32 label_count, label_count_mask, i; | |
25cd9ba0 SH |
1634 | |
1635 | mpls_key = nla_data(a[OVS_KEY_ATTR_MPLS]); | |
fbdcdd78 MV |
1636 | hdr_len = nla_len(a[OVS_KEY_ATTR_MPLS]); |
1637 | label_count = hdr_len / sizeof(struct ovs_key_mpls); | |
1638 | ||
1639 | if (label_count == 0 || label_count > MPLS_LABEL_DEPTH || | |
1640 | hdr_len % sizeof(struct ovs_key_mpls)) | |
1641 | return -EINVAL; | |
1642 | ||
1643 | label_count_mask = GENMASK(label_count - 1, 0); | |
1644 | ||
1645 | for (i = 0 ; i < label_count; i++) | |
1646 | SW_FLOW_KEY_PUT(match, mpls.lse[i], | |
1647 | mpls_key[i].mpls_lse, is_mask); | |
1648 | ||
1649 | SW_FLOW_KEY_PUT(match, mpls.num_labels_mask, | |
1650 | label_count_mask, is_mask); | |
25cd9ba0 SH |
1651 | |
1652 | attrs &= ~(1 << OVS_KEY_ATTR_MPLS); | |
1653 | } | |
1654 | ||
e6445719 PS |
1655 | if (attrs & (1 << OVS_KEY_ATTR_TCP)) { |
1656 | const struct ovs_key_tcp *tcp_key; | |
1657 | ||
1658 | tcp_key = nla_data(a[OVS_KEY_ATTR_TCP]); | |
1139e241 JR |
1659 | SW_FLOW_KEY_PUT(match, tp.src, tcp_key->tcp_src, is_mask); |
1660 | SW_FLOW_KEY_PUT(match, tp.dst, tcp_key->tcp_dst, is_mask); | |
e6445719 PS |
1661 | attrs &= ~(1 << OVS_KEY_ATTR_TCP); |
1662 | } | |
1663 | ||
5eb26b15 | 1664 | if (attrs & (1 << OVS_KEY_ATTR_TCP_FLAGS)) { |
1b760fb9 JS |
1665 | SW_FLOW_KEY_PUT(match, tp.flags, |
1666 | nla_get_be16(a[OVS_KEY_ATTR_TCP_FLAGS]), | |
1667 | is_mask); | |
5eb26b15 JR |
1668 | attrs &= ~(1 << OVS_KEY_ATTR_TCP_FLAGS); |
1669 | } | |
1670 | ||
e6445719 PS |
1671 | if (attrs & (1 << OVS_KEY_ATTR_UDP)) { |
1672 | const struct ovs_key_udp *udp_key; | |
1673 | ||
1674 | udp_key = nla_data(a[OVS_KEY_ATTR_UDP]); | |
1139e241 JR |
1675 | SW_FLOW_KEY_PUT(match, tp.src, udp_key->udp_src, is_mask); |
1676 | SW_FLOW_KEY_PUT(match, tp.dst, udp_key->udp_dst, is_mask); | |
e6445719 PS |
1677 | attrs &= ~(1 << OVS_KEY_ATTR_UDP); |
1678 | } | |
1679 | ||
1680 | if (attrs & (1 << OVS_KEY_ATTR_SCTP)) { | |
1681 | const struct ovs_key_sctp *sctp_key; | |
1682 | ||
1683 | sctp_key = nla_data(a[OVS_KEY_ATTR_SCTP]); | |
1139e241 JR |
1684 | SW_FLOW_KEY_PUT(match, tp.src, sctp_key->sctp_src, is_mask); |
1685 | SW_FLOW_KEY_PUT(match, tp.dst, sctp_key->sctp_dst, is_mask); | |
e6445719 PS |
1686 | attrs &= ~(1 << OVS_KEY_ATTR_SCTP); |
1687 | } | |
1688 | ||
1689 | if (attrs & (1 << OVS_KEY_ATTR_ICMP)) { | |
1690 | const struct ovs_key_icmp *icmp_key; | |
1691 | ||
1692 | icmp_key = nla_data(a[OVS_KEY_ATTR_ICMP]); | |
1139e241 | 1693 | SW_FLOW_KEY_PUT(match, tp.src, |
e6445719 | 1694 | htons(icmp_key->icmp_type), is_mask); |
1139e241 | 1695 | SW_FLOW_KEY_PUT(match, tp.dst, |
e6445719 PS |
1696 | htons(icmp_key->icmp_code), is_mask); |
1697 | attrs &= ~(1 << OVS_KEY_ATTR_ICMP); | |
1698 | } | |
1699 | ||
1700 | if (attrs & (1 << OVS_KEY_ATTR_ICMPV6)) { | |
1701 | const struct ovs_key_icmpv6 *icmpv6_key; | |
1702 | ||
1703 | icmpv6_key = nla_data(a[OVS_KEY_ATTR_ICMPV6]); | |
1139e241 | 1704 | SW_FLOW_KEY_PUT(match, tp.src, |
e6445719 | 1705 | htons(icmpv6_key->icmpv6_type), is_mask); |
1139e241 | 1706 | SW_FLOW_KEY_PUT(match, tp.dst, |
e6445719 PS |
1707 | htons(icmpv6_key->icmpv6_code), is_mask); |
1708 | attrs &= ~(1 << OVS_KEY_ATTR_ICMPV6); | |
1709 | } | |
1710 | ||
1711 | if (attrs & (1 << OVS_KEY_ATTR_ND)) { | |
1712 | const struct ovs_key_nd *nd_key; | |
1713 | ||
1714 | nd_key = nla_data(a[OVS_KEY_ATTR_ND]); | |
1715 | SW_FLOW_KEY_MEMCPY(match, ipv6.nd.target, | |
1716 | nd_key->nd_target, | |
1717 | sizeof(match->key->ipv6.nd.target), | |
1718 | is_mask); | |
1719 | SW_FLOW_KEY_MEMCPY(match, ipv6.nd.sll, | |
1720 | nd_key->nd_sll, ETH_ALEN, is_mask); | |
1721 | SW_FLOW_KEY_MEMCPY(match, ipv6.nd.tll, | |
1722 | nd_key->nd_tll, ETH_ALEN, is_mask); | |
1723 | attrs &= ~(1 << OVS_KEY_ATTR_ND); | |
1724 | } | |
1725 | ||
426cda5c | 1726 | if (attrs != 0) { |
05da5898 | 1727 | OVS_NLERR(log, "Unknown key attributes %llx", |
426cda5c | 1728 | (unsigned long long)attrs); |
e6445719 | 1729 | return -EINVAL; |
426cda5c | 1730 | } |
e6445719 PS |
1731 | |
1732 | return 0; | |
1733 | } | |
1734 | ||
81bfe3c3 TG |
1735 | static void nlattr_set(struct nlattr *attr, u8 val, |
1736 | const struct ovs_len_tbl *tbl) | |
e6445719 | 1737 | { |
f47de068 PS |
1738 | struct nlattr *nla; |
1739 | int rem; | |
e6445719 | 1740 | |
f47de068 PS |
1741 | /* The nlattr stream should already have been validated */ |
1742 | nla_for_each_nested(nla, attr, rem) { | |
72f17baf SB |
1743 | if (tbl[nla_type(nla)].len == OVS_ATTR_NESTED) |
1744 | nlattr_set(nla, val, tbl[nla_type(nla)].next ? : tbl); | |
1745 | else | |
f47de068 | 1746 | memset(nla_data(nla), val, nla_len(nla)); |
9e384715 JS |
1747 | |
1748 | if (nla_type(nla) == OVS_KEY_ATTR_CT_STATE) | |
1749 | *(u32 *)nla_data(nla) &= CT_SUPPORTED_MASK; | |
f47de068 PS |
1750 | } |
1751 | } | |
1752 | ||
1753 | static void mask_set_nlattr(struct nlattr *attr, u8 val) | |
1754 | { | |
81bfe3c3 | 1755 | nlattr_set(attr, val, ovs_key_lens); |
e6445719 PS |
1756 | } |
1757 | ||
1758 | /** | |
1759 | * ovs_nla_get_match - parses Netlink attributes into a flow key and | |
1760 | * mask. In case the 'mask' is NULL, the flow is treated as exact match | |
1761 | * flow. Otherwise, it is treated as a wildcarded flow, except the mask | |
1762 | * does not include any don't care bit. | |
c2ac6673 | 1763 | * @net: Used to determine per-namespace field support. |
e6445719 PS |
1764 | * @match: receives the extracted flow match information. |
1765 | * @key: Netlink attribute holding nested %OVS_KEY_ATTR_* Netlink attribute | |
1766 | * sequence. The fields should of the packet that triggered the creation | |
1767 | * of this flow. | |
1768 | * @mask: Optional. Netlink attribute holding nested %OVS_KEY_ATTR_* Netlink | |
1769 | * attribute specifies the mask field of the wildcarded flow. | |
05da5898 JR |
1770 | * @log: Boolean to allow kernel error logging. Normally true, but when |
1771 | * probing for feature compatibility this should be passed in as false to | |
1772 | * suppress unnecessary error logging. | |
e6445719 | 1773 | */ |
c2ac6673 | 1774 | int ovs_nla_get_match(struct net *net, struct sw_flow_match *match, |
a85311bf | 1775 | const struct nlattr *nla_key, |
05da5898 JR |
1776 | const struct nlattr *nla_mask, |
1777 | bool log) | |
e6445719 PS |
1778 | { |
1779 | const struct nlattr *a[OVS_KEY_ATTR_MAX + 1]; | |
f47de068 | 1780 | struct nlattr *newmask = NULL; |
e6445719 PS |
1781 | u64 key_attrs = 0; |
1782 | u64 mask_attrs = 0; | |
e6445719 PS |
1783 | int err; |
1784 | ||
05da5898 | 1785 | err = parse_flow_nlattrs(nla_key, a, &key_attrs, log); |
e6445719 PS |
1786 | if (err) |
1787 | return err; | |
1788 | ||
018c1dda EG |
1789 | err = parse_vlan_from_nlattrs(match, &key_attrs, a, false, log); |
1790 | if (err) | |
1791 | return err; | |
e6445719 | 1792 | |
c2ac6673 | 1793 | err = ovs_key_from_nlattrs(net, match, key_attrs, a, false, log); |
e6445719 PS |
1794 | if (err) |
1795 | return err; | |
1796 | ||
a85311bf PS |
1797 | if (match->mask) { |
1798 | if (!nla_mask) { | |
1799 | /* Create an exact match mask. We need to set to 0xff | |
1800 | * all the 'match->mask' fields that have been touched | |
1801 | * in 'match->key'. We cannot simply memset | |
1802 | * 'match->mask', because padding bytes and fields not | |
1803 | * specified in 'match->key' should be left to 0. | |
1804 | * Instead, we use a stream of netlink attributes, | |
1805 | * copied from 'key' and set to 0xff. | |
1806 | * ovs_key_from_nlattrs() will take care of filling | |
1807 | * 'match->mask' appropriately. | |
1808 | */ | |
1809 | newmask = kmemdup(nla_key, | |
1810 | nla_total_size(nla_len(nla_key)), | |
1811 | GFP_KERNEL); | |
1812 | if (!newmask) | |
1813 | return -ENOMEM; | |
f47de068 | 1814 | |
a85311bf | 1815 | mask_set_nlattr(newmask, 0xff); |
f47de068 | 1816 | |
a85311bf PS |
1817 | /* The userspace does not send tunnel attributes that |
1818 | * are 0, but we should not wildcard them nonetheless. | |
1819 | */ | |
00a93bab | 1820 | if (match->key->tun_proto) |
a85311bf PS |
1821 | SW_FLOW_KEY_MEMSET_FIELD(match, tun_key, |
1822 | 0xff, true); | |
f47de068 | 1823 | |
a85311bf PS |
1824 | nla_mask = newmask; |
1825 | } | |
f47de068 | 1826 | |
05da5898 | 1827 | err = parse_flow_mask_nlattrs(nla_mask, a, &mask_attrs, log); |
e6445719 | 1828 | if (err) |
f47de068 | 1829 | goto free_newmask; |
e6445719 | 1830 | |
a85311bf | 1831 | /* Always match on tci. */ |
018c1dda EG |
1832 | SW_FLOW_KEY_PUT(match, eth.vlan.tci, htons(0xffff), true); |
1833 | SW_FLOW_KEY_PUT(match, eth.cvlan.tci, htons(0xffff), true); | |
e6445719 | 1834 | |
018c1dda EG |
1835 | err = parse_vlan_from_nlattrs(match, &mask_attrs, a, true, log); |
1836 | if (err) | |
1837 | goto free_newmask; | |
e6445719 | 1838 | |
c2ac6673 JS |
1839 | err = ovs_key_from_nlattrs(net, match, mask_attrs, a, true, |
1840 | log); | |
e6445719 | 1841 | if (err) |
f47de068 | 1842 | goto free_newmask; |
e6445719 PS |
1843 | } |
1844 | ||
05da5898 | 1845 | if (!match_validate(match, key_attrs, mask_attrs, log)) |
f47de068 | 1846 | err = -EINVAL; |
e6445719 | 1847 | |
f47de068 PS |
1848 | free_newmask: |
1849 | kfree(newmask); | |
1850 | return err; | |
e6445719 PS |
1851 | } |
1852 | ||
74ed7ab9 JS |
1853 | static size_t get_ufid_len(const struct nlattr *attr, bool log) |
1854 | { | |
1855 | size_t len; | |
1856 | ||
1857 | if (!attr) | |
1858 | return 0; | |
1859 | ||
1860 | len = nla_len(attr); | |
1861 | if (len < 1 || len > MAX_UFID_LENGTH) { | |
1862 | OVS_NLERR(log, "ufid size %u bytes exceeds the range (1, %d)", | |
1863 | nla_len(attr), MAX_UFID_LENGTH); | |
1864 | return 0; | |
1865 | } | |
1866 | ||
1867 | return len; | |
1868 | } | |
1869 | ||
1870 | /* Initializes 'flow->ufid', returning true if 'attr' contains a valid UFID, | |
1871 | * or false otherwise. | |
1872 | */ | |
1873 | bool ovs_nla_get_ufid(struct sw_flow_id *sfid, const struct nlattr *attr, | |
1874 | bool log) | |
1875 | { | |
1876 | sfid->ufid_len = get_ufid_len(attr, log); | |
1877 | if (sfid->ufid_len) | |
1878 | memcpy(sfid->ufid, nla_data(attr), sfid->ufid_len); | |
1879 | ||
1880 | return sfid->ufid_len; | |
1881 | } | |
1882 | ||
1883 | int ovs_nla_get_identifier(struct sw_flow_id *sfid, const struct nlattr *ufid, | |
1884 | const struct sw_flow_key *key, bool log) | |
1885 | { | |
1886 | struct sw_flow_key *new_key; | |
1887 | ||
1888 | if (ovs_nla_get_ufid(sfid, ufid, log)) | |
1889 | return 0; | |
1890 | ||
1891 | /* If UFID was not provided, use unmasked key. */ | |
1892 | new_key = kmalloc(sizeof(*new_key), GFP_KERNEL); | |
1893 | if (!new_key) | |
1894 | return -ENOMEM; | |
1895 | memcpy(new_key, key, sizeof(*key)); | |
1896 | sfid->unmasked_key = new_key; | |
1897 | ||
1898 | return 0; | |
1899 | } | |
1900 | ||
1901 | u32 ovs_nla_get_ufid_flags(const struct nlattr *attr) | |
1902 | { | |
1903 | return attr ? nla_get_u32(attr) : 0; | |
1904 | } | |
1905 | ||
e6445719 PS |
1906 | /** |
1907 | * ovs_nla_get_flow_metadata - parses Netlink attributes into a flow key. | |
9dd7f890 JR |
1908 | * @net: Network namespace. |
1909 | * @key: Receives extracted in_port, priority, tun_key, skb_mark and conntrack | |
1910 | * metadata. | |
1911 | * @a: Array of netlink attributes holding parsed %OVS_KEY_ATTR_* Netlink | |
1912 | * attributes. | |
1913 | * @attrs: Bit mask for the netlink attributes included in @a. | |
05da5898 JR |
1914 | * @log: Boolean to allow kernel error logging. Normally true, but when |
1915 | * probing for feature compatibility this should be passed in as false to | |
1916 | * suppress unnecessary error logging. | |
e6445719 PS |
1917 | * |
1918 | * This parses a series of Netlink attributes that form a flow key, which must | |
1919 | * take the same form accepted by flow_from_nlattrs(), but only enough of it to | |
1920 | * get the metadata, that is, the parts of the flow key that cannot be | |
1921 | * extracted from the packet itself. | |
9dd7f890 JR |
1922 | * |
1923 | * This must be called before the packet key fields are filled in 'key'. | |
e6445719 PS |
1924 | */ |
1925 | ||
9dd7f890 JR |
1926 | int ovs_nla_get_flow_metadata(struct net *net, |
1927 | const struct nlattr *a[OVS_KEY_ATTR_MAX + 1], | |
1928 | u64 attrs, struct sw_flow_key *key, bool log) | |
e6445719 | 1929 | { |
83c8df26 | 1930 | struct sw_flow_match match; |
e6445719 PS |
1931 | |
1932 | memset(&match, 0, sizeof(match)); | |
83c8df26 | 1933 | match.key = key; |
e6445719 | 1934 | |
316d4d78 JR |
1935 | key->ct_state = 0; |
1936 | key->ct_zone = 0; | |
1937 | key->ct_orig_proto = 0; | |
7f8a436e | 1938 | memset(&key->ct, 0, sizeof(key->ct)); |
9dd7f890 JR |
1939 | memset(&key->ipv4.ct_orig, 0, sizeof(key->ipv4.ct_orig)); |
1940 | memset(&key->ipv6.ct_orig, 0, sizeof(key->ipv6.ct_orig)); | |
1941 | ||
83c8df26 | 1942 | key->phy.in_port = DP_MAX_PORTS; |
e6445719 | 1943 | |
c2ac6673 | 1944 | return metadata_from_nlattrs(net, &match, &attrs, a, false, log); |
e6445719 PS |
1945 | } |
1946 | ||
018c1dda EG |
1947 | static int ovs_nla_put_vlan(struct sk_buff *skb, const struct vlan_head *vh, |
1948 | bool is_mask) | |
1949 | { | |
1950 | __be16 eth_type = !is_mask ? vh->tpid : htons(0xffff); | |
1951 | ||
1952 | if (nla_put_be16(skb, OVS_KEY_ATTR_ETHERTYPE, eth_type) || | |
1953 | nla_put_be16(skb, OVS_KEY_ATTR_VLAN, vh->tci)) | |
1954 | return -EMSGSIZE; | |
1955 | return 0; | |
1956 | } | |
1957 | ||
b2d0f5d5 YY |
1958 | static int nsh_key_to_nlattr(const struct ovs_key_nsh *nsh, bool is_mask, |
1959 | struct sk_buff *skb) | |
1960 | { | |
1961 | struct nlattr *start; | |
1962 | ||
ae0be8de | 1963 | start = nla_nest_start_noflag(skb, OVS_KEY_ATTR_NSH); |
b2d0f5d5 YY |
1964 | if (!start) |
1965 | return -EMSGSIZE; | |
1966 | ||
1967 | if (nla_put(skb, OVS_NSH_KEY_ATTR_BASE, sizeof(nsh->base), &nsh->base)) | |
1968 | goto nla_put_failure; | |
1969 | ||
1970 | if (is_mask || nsh->base.mdtype == NSH_M_TYPE1) { | |
1971 | if (nla_put(skb, OVS_NSH_KEY_ATTR_MD1, | |
1972 | sizeof(nsh->context), nsh->context)) | |
1973 | goto nla_put_failure; | |
1974 | } | |
1975 | ||
1976 | /* Don't support MD type 2 yet */ | |
1977 | ||
1978 | nla_nest_end(skb, start); | |
1979 | ||
1980 | return 0; | |
1981 | ||
1982 | nla_put_failure: | |
1983 | return -EMSGSIZE; | |
1984 | } | |
1985 | ||
5b4237bb JS |
1986 | static int __ovs_nla_put_key(const struct sw_flow_key *swkey, |
1987 | const struct sw_flow_key *output, bool is_mask, | |
1988 | struct sk_buff *skb) | |
e6445719 PS |
1989 | { |
1990 | struct ovs_key_ethernet *eth_key; | |
018c1dda EG |
1991 | struct nlattr *nla; |
1992 | struct nlattr *encap = NULL; | |
1993 | struct nlattr *in_encap = NULL; | |
e6445719 | 1994 | |
971427f3 AZ |
1995 | if (nla_put_u32(skb, OVS_KEY_ATTR_RECIRC_ID, output->recirc_id)) |
1996 | goto nla_put_failure; | |
1997 | ||
1998 | if (nla_put_u32(skb, OVS_KEY_ATTR_DP_HASH, output->ovs_flow_hash)) | |
1999 | goto nla_put_failure; | |
2000 | ||
e6445719 PS |
2001 | if (nla_put_u32(skb, OVS_KEY_ATTR_PRIORITY, output->phy.priority)) |
2002 | goto nla_put_failure; | |
2003 | ||
00a93bab | 2004 | if ((swkey->tun_proto || is_mask)) { |
d91641d9 | 2005 | const void *opts = NULL; |
f5796684 JG |
2006 | |
2007 | if (output->tun_key.tun_flags & TUNNEL_OPTIONS_PRESENT) | |
d91641d9 | 2008 | opts = TUN_METADATA_OPTS(output, swkey->tun_opts_len); |
f5796684 | 2009 | |
6b26ba3a | 2010 | if (ip_tun_to_nlattr(skb, &output->tun_key, opts, |
18b6f717 | 2011 | swkey->tun_opts_len, swkey->tun_proto, 0)) |
f5796684 JG |
2012 | goto nla_put_failure; |
2013 | } | |
e6445719 PS |
2014 | |
2015 | if (swkey->phy.in_port == DP_MAX_PORTS) { | |
2016 | if (is_mask && (output->phy.in_port == 0xffff)) | |
2017 | if (nla_put_u32(skb, OVS_KEY_ATTR_IN_PORT, 0xffffffff)) | |
2018 | goto nla_put_failure; | |
2019 | } else { | |
2020 | u16 upper_u16; | |
2021 | upper_u16 = !is_mask ? 0 : 0xffff; | |
2022 | ||
2023 | if (nla_put_u32(skb, OVS_KEY_ATTR_IN_PORT, | |
2024 | (upper_u16 << 16) | output->phy.in_port)) | |
2025 | goto nla_put_failure; | |
2026 | } | |
2027 | ||
2028 | if (nla_put_u32(skb, OVS_KEY_ATTR_SKB_MARK, output->phy.skb_mark)) | |
2029 | goto nla_put_failure; | |
2030 | ||
9dd7f890 | 2031 | if (ovs_ct_put_key(swkey, output, skb)) |
7f8a436e JS |
2032 | goto nla_put_failure; |
2033 | ||
0a6410fb JB |
2034 | if (ovs_key_mac_proto(swkey) == MAC_PROTO_ETHERNET) { |
2035 | nla = nla_reserve(skb, OVS_KEY_ATTR_ETHERNET, sizeof(*eth_key)); | |
2036 | if (!nla) | |
e6445719 | 2037 | goto nla_put_failure; |
018c1dda | 2038 | |
0a6410fb JB |
2039 | eth_key = nla_data(nla); |
2040 | ether_addr_copy(eth_key->eth_src, output->eth.src); | |
2041 | ether_addr_copy(eth_key->eth_dst, output->eth.dst); | |
2042 | ||
2043 | if (swkey->eth.vlan.tci || eth_type_vlan(swkey->eth.type)) { | |
2044 | if (ovs_nla_put_vlan(skb, &output->eth.vlan, is_mask)) | |
018c1dda | 2045 | goto nla_put_failure; |
ae0be8de | 2046 | encap = nla_nest_start_noflag(skb, OVS_KEY_ATTR_ENCAP); |
0a6410fb | 2047 | if (!swkey->eth.vlan.tci) |
018c1dda | 2048 | goto unencap; |
0a6410fb JB |
2049 | |
2050 | if (swkey->eth.cvlan.tci || eth_type_vlan(swkey->eth.type)) { | |
2051 | if (ovs_nla_put_vlan(skb, &output->eth.cvlan, is_mask)) | |
2052 | goto nla_put_failure; | |
ae0be8de MK |
2053 | in_encap = nla_nest_start_noflag(skb, |
2054 | OVS_KEY_ATTR_ENCAP); | |
0a6410fb JB |
2055 | if (!swkey->eth.cvlan.tci) |
2056 | goto unencap; | |
2057 | } | |
018c1dda | 2058 | } |
e6445719 | 2059 | |
0a6410fb JB |
2060 | if (swkey->eth.type == htons(ETH_P_802_2)) { |
2061 | /* | |
2062 | * Ethertype 802.2 is represented in the netlink with omitted | |
2063 | * OVS_KEY_ATTR_ETHERTYPE in the flow key attribute, and | |
2064 | * 0xffff in the mask attribute. Ethertype can also | |
2065 | * be wildcarded. | |
2066 | */ | |
2067 | if (is_mask && output->eth.type) | |
2068 | if (nla_put_be16(skb, OVS_KEY_ATTR_ETHERTYPE, | |
2069 | output->eth.type)) | |
2070 | goto nla_put_failure; | |
2071 | goto unencap; | |
2072 | } | |
e6445719 PS |
2073 | } |
2074 | ||
2075 | if (nla_put_be16(skb, OVS_KEY_ATTR_ETHERTYPE, output->eth.type)) | |
2076 | goto nla_put_failure; | |
2077 | ||
018c1dda EG |
2078 | if (eth_type_vlan(swkey->eth.type)) { |
2079 | /* There are 3 VLAN tags, we don't know anything about the rest | |
2080 | * of the packet, so truncate here. | |
2081 | */ | |
2082 | WARN_ON_ONCE(!(encap && in_encap)); | |
2083 | goto unencap; | |
2084 | } | |
2085 | ||
e6445719 PS |
2086 | if (swkey->eth.type == htons(ETH_P_IP)) { |
2087 | struct ovs_key_ipv4 *ipv4_key; | |
2088 | ||
2089 | nla = nla_reserve(skb, OVS_KEY_ATTR_IPV4, sizeof(*ipv4_key)); | |
2090 | if (!nla) | |
2091 | goto nla_put_failure; | |
2092 | ipv4_key = nla_data(nla); | |
2093 | ipv4_key->ipv4_src = output->ipv4.addr.src; | |
2094 | ipv4_key->ipv4_dst = output->ipv4.addr.dst; | |
2095 | ipv4_key->ipv4_proto = output->ip.proto; | |
2096 | ipv4_key->ipv4_tos = output->ip.tos; | |
2097 | ipv4_key->ipv4_ttl = output->ip.ttl; | |
2098 | ipv4_key->ipv4_frag = output->ip.frag; | |
2099 | } else if (swkey->eth.type == htons(ETH_P_IPV6)) { | |
2100 | struct ovs_key_ipv6 *ipv6_key; | |
2101 | ||
2102 | nla = nla_reserve(skb, OVS_KEY_ATTR_IPV6, sizeof(*ipv6_key)); | |
2103 | if (!nla) | |
2104 | goto nla_put_failure; | |
2105 | ipv6_key = nla_data(nla); | |
2106 | memcpy(ipv6_key->ipv6_src, &output->ipv6.addr.src, | |
2107 | sizeof(ipv6_key->ipv6_src)); | |
2108 | memcpy(ipv6_key->ipv6_dst, &output->ipv6.addr.dst, | |
2109 | sizeof(ipv6_key->ipv6_dst)); | |
2110 | ipv6_key->ipv6_label = output->ipv6.label; | |
2111 | ipv6_key->ipv6_proto = output->ip.proto; | |
2112 | ipv6_key->ipv6_tclass = output->ip.tos; | |
2113 | ipv6_key->ipv6_hlimit = output->ip.ttl; | |
2114 | ipv6_key->ipv6_frag = output->ip.frag; | |
b2d0f5d5 YY |
2115 | } else if (swkey->eth.type == htons(ETH_P_NSH)) { |
2116 | if (nsh_key_to_nlattr(&output->nsh, is_mask, skb)) | |
2117 | goto nla_put_failure; | |
e6445719 PS |
2118 | } else if (swkey->eth.type == htons(ETH_P_ARP) || |
2119 | swkey->eth.type == htons(ETH_P_RARP)) { | |
2120 | struct ovs_key_arp *arp_key; | |
2121 | ||
2122 | nla = nla_reserve(skb, OVS_KEY_ATTR_ARP, sizeof(*arp_key)); | |
2123 | if (!nla) | |
2124 | goto nla_put_failure; | |
2125 | arp_key = nla_data(nla); | |
2126 | memset(arp_key, 0, sizeof(struct ovs_key_arp)); | |
2127 | arp_key->arp_sip = output->ipv4.addr.src; | |
2128 | arp_key->arp_tip = output->ipv4.addr.dst; | |
2129 | arp_key->arp_op = htons(output->ip.proto); | |
8c63ff09 JP |
2130 | ether_addr_copy(arp_key->arp_sha, output->ipv4.arp.sha); |
2131 | ether_addr_copy(arp_key->arp_tha, output->ipv4.arp.tha); | |
25cd9ba0 | 2132 | } else if (eth_p_mpls(swkey->eth.type)) { |
fbdcdd78 | 2133 | u8 i, num_labels; |
25cd9ba0 SH |
2134 | struct ovs_key_mpls *mpls_key; |
2135 | ||
fbdcdd78 MV |
2136 | num_labels = hweight_long(output->mpls.num_labels_mask); |
2137 | nla = nla_reserve(skb, OVS_KEY_ATTR_MPLS, | |
2138 | num_labels * sizeof(*mpls_key)); | |
25cd9ba0 SH |
2139 | if (!nla) |
2140 | goto nla_put_failure; | |
fbdcdd78 | 2141 | |
25cd9ba0 | 2142 | mpls_key = nla_data(nla); |
fbdcdd78 MV |
2143 | for (i = 0; i < num_labels; i++) |
2144 | mpls_key[i].mpls_lse = output->mpls.lse[i]; | |
e6445719 PS |
2145 | } |
2146 | ||
2147 | if ((swkey->eth.type == htons(ETH_P_IP) || | |
2148 | swkey->eth.type == htons(ETH_P_IPV6)) && | |
2149 | swkey->ip.frag != OVS_FRAG_TYPE_LATER) { | |
2150 | ||
2151 | if (swkey->ip.proto == IPPROTO_TCP) { | |
2152 | struct ovs_key_tcp *tcp_key; | |
2153 | ||
2154 | nla = nla_reserve(skb, OVS_KEY_ATTR_TCP, sizeof(*tcp_key)); | |
2155 | if (!nla) | |
2156 | goto nla_put_failure; | |
2157 | tcp_key = nla_data(nla); | |
1139e241 JR |
2158 | tcp_key->tcp_src = output->tp.src; |
2159 | tcp_key->tcp_dst = output->tp.dst; | |
2160 | if (nla_put_be16(skb, OVS_KEY_ATTR_TCP_FLAGS, | |
2161 | output->tp.flags)) | |
2162 | goto nla_put_failure; | |
e6445719 PS |
2163 | } else if (swkey->ip.proto == IPPROTO_UDP) { |
2164 | struct ovs_key_udp *udp_key; | |
2165 | ||
2166 | nla = nla_reserve(skb, OVS_KEY_ATTR_UDP, sizeof(*udp_key)); | |
2167 | if (!nla) | |
2168 | goto nla_put_failure; | |
2169 | udp_key = nla_data(nla); | |
1139e241 JR |
2170 | udp_key->udp_src = output->tp.src; |
2171 | udp_key->udp_dst = output->tp.dst; | |
e6445719 PS |
2172 | } else if (swkey->ip.proto == IPPROTO_SCTP) { |
2173 | struct ovs_key_sctp *sctp_key; | |
2174 | ||
2175 | nla = nla_reserve(skb, OVS_KEY_ATTR_SCTP, sizeof(*sctp_key)); | |
2176 | if (!nla) | |
2177 | goto nla_put_failure; | |
2178 | sctp_key = nla_data(nla); | |
1139e241 JR |
2179 | sctp_key->sctp_src = output->tp.src; |
2180 | sctp_key->sctp_dst = output->tp.dst; | |
e6445719 PS |
2181 | } else if (swkey->eth.type == htons(ETH_P_IP) && |
2182 | swkey->ip.proto == IPPROTO_ICMP) { | |
2183 | struct ovs_key_icmp *icmp_key; | |
2184 | ||
2185 | nla = nla_reserve(skb, OVS_KEY_ATTR_ICMP, sizeof(*icmp_key)); | |
2186 | if (!nla) | |
2187 | goto nla_put_failure; | |
2188 | icmp_key = nla_data(nla); | |
1139e241 JR |
2189 | icmp_key->icmp_type = ntohs(output->tp.src); |
2190 | icmp_key->icmp_code = ntohs(output->tp.dst); | |
e6445719 PS |
2191 | } else if (swkey->eth.type == htons(ETH_P_IPV6) && |
2192 | swkey->ip.proto == IPPROTO_ICMPV6) { | |
2193 | struct ovs_key_icmpv6 *icmpv6_key; | |
2194 | ||
2195 | nla = nla_reserve(skb, OVS_KEY_ATTR_ICMPV6, | |
2196 | sizeof(*icmpv6_key)); | |
2197 | if (!nla) | |
2198 | goto nla_put_failure; | |
2199 | icmpv6_key = nla_data(nla); | |
1139e241 JR |
2200 | icmpv6_key->icmpv6_type = ntohs(output->tp.src); |
2201 | icmpv6_key->icmpv6_code = ntohs(output->tp.dst); | |
e6445719 PS |
2202 | |
2203 | if (icmpv6_key->icmpv6_type == NDISC_NEIGHBOUR_SOLICITATION || | |
2204 | icmpv6_key->icmpv6_type == NDISC_NEIGHBOUR_ADVERTISEMENT) { | |
2205 | struct ovs_key_nd *nd_key; | |
2206 | ||
2207 | nla = nla_reserve(skb, OVS_KEY_ATTR_ND, sizeof(*nd_key)); | |
2208 | if (!nla) | |
2209 | goto nla_put_failure; | |
2210 | nd_key = nla_data(nla); | |
2211 | memcpy(nd_key->nd_target, &output->ipv6.nd.target, | |
2212 | sizeof(nd_key->nd_target)); | |
8c63ff09 JP |
2213 | ether_addr_copy(nd_key->nd_sll, output->ipv6.nd.sll); |
2214 | ether_addr_copy(nd_key->nd_tll, output->ipv6.nd.tll); | |
e6445719 PS |
2215 | } |
2216 | } | |
2217 | } | |
2218 | ||
2219 | unencap: | |
018c1dda EG |
2220 | if (in_encap) |
2221 | nla_nest_end(skb, in_encap); | |
e6445719 PS |
2222 | if (encap) |
2223 | nla_nest_end(skb, encap); | |
2224 | ||
2225 | return 0; | |
2226 | ||
2227 | nla_put_failure: | |
2228 | return -EMSGSIZE; | |
2229 | } | |
2230 | ||
5b4237bb JS |
2231 | int ovs_nla_put_key(const struct sw_flow_key *swkey, |
2232 | const struct sw_flow_key *output, int attr, bool is_mask, | |
2233 | struct sk_buff *skb) | |
2234 | { | |
2235 | int err; | |
2236 | struct nlattr *nla; | |
2237 | ||
ae0be8de | 2238 | nla = nla_nest_start_noflag(skb, attr); |
5b4237bb JS |
2239 | if (!nla) |
2240 | return -EMSGSIZE; | |
2241 | err = __ovs_nla_put_key(swkey, output, is_mask, skb); | |
2242 | if (err) | |
2243 | return err; | |
2244 | nla_nest_end(skb, nla); | |
2245 | ||
2246 | return 0; | |
2247 | } | |
2248 | ||
2249 | /* Called with ovs_mutex or RCU read lock. */ | |
74ed7ab9 JS |
2250 | int ovs_nla_put_identifier(const struct sw_flow *flow, struct sk_buff *skb) |
2251 | { | |
2252 | if (ovs_identifier_is_ufid(&flow->id)) | |
2253 | return nla_put(skb, OVS_FLOW_ATTR_UFID, flow->id.ufid_len, | |
2254 | flow->id.ufid); | |
2255 | ||
2256 | return ovs_nla_put_key(flow->id.unmasked_key, flow->id.unmasked_key, | |
2257 | OVS_FLOW_ATTR_KEY, false, skb); | |
2258 | } | |
2259 | ||
2260 | /* Called with ovs_mutex or RCU read lock. */ | |
2261 | int ovs_nla_put_masked_key(const struct sw_flow *flow, struct sk_buff *skb) | |
5b4237bb | 2262 | { |
26ad0b83 | 2263 | return ovs_nla_put_key(&flow->key, &flow->key, |
5b4237bb JS |
2264 | OVS_FLOW_ATTR_KEY, false, skb); |
2265 | } | |
2266 | ||
2267 | /* Called with ovs_mutex or RCU read lock. */ | |
2268 | int ovs_nla_put_mask(const struct sw_flow *flow, struct sk_buff *skb) | |
2269 | { | |
2270 | return ovs_nla_put_key(&flow->key, &flow->mask->key, | |
2271 | OVS_FLOW_ATTR_MASK, true, skb); | |
2272 | } | |
2273 | ||
e6445719 PS |
2274 | #define MAX_ACTIONS_BUFSIZE (32 * 1024) |
2275 | ||
67c8d22a | 2276 | static struct sw_flow_actions *nla_alloc_flow_actions(int size) |
e6445719 PS |
2277 | { |
2278 | struct sw_flow_actions *sfa; | |
2279 | ||
67c8d22a | 2280 | WARN_ON_ONCE(size > MAX_ACTIONS_BUFSIZE); |
e6445719 PS |
2281 | |
2282 | sfa = kmalloc(sizeof(*sfa) + size, GFP_KERNEL); | |
2283 | if (!sfa) | |
2284 | return ERR_PTR(-ENOMEM); | |
2285 | ||
2286 | sfa->actions_len = 0; | |
2287 | return sfa; | |
2288 | } | |
2289 | ||
34ae932a TG |
2290 | static void ovs_nla_free_set_action(const struct nlattr *a) |
2291 | { | |
2292 | const struct nlattr *ovs_key = nla_data(a); | |
2293 | struct ovs_tunnel_info *ovs_tun; | |
2294 | ||
2295 | switch (nla_type(ovs_key)) { | |
2296 | case OVS_KEY_ATTR_TUNNEL_INFO: | |
2297 | ovs_tun = nla_data(ovs_key); | |
2298 | dst_release((struct dst_entry *)ovs_tun->tun_dst); | |
2299 | break; | |
2300 | } | |
2301 | } | |
2302 | ||
2303 | void ovs_nla_free_flow_actions(struct sw_flow_actions *sf_acts) | |
2304 | { | |
2305 | const struct nlattr *a; | |
2306 | int rem; | |
2307 | ||
2308 | if (!sf_acts) | |
2309 | return; | |
2310 | ||
2311 | nla_for_each_attr(a, sf_acts->actions, sf_acts->actions_len, rem) { | |
2312 | switch (nla_type(a)) { | |
2313 | case OVS_ACTION_ATTR_SET: | |
2314 | ovs_nla_free_set_action(a); | |
2315 | break; | |
7f8a436e JS |
2316 | case OVS_ACTION_ATTR_CT: |
2317 | ovs_ct_free_action(a); | |
2318 | break; | |
34ae932a TG |
2319 | } |
2320 | } | |
2321 | ||
2322 | kfree(sf_acts); | |
2323 | } | |
2324 | ||
2325 | static void __ovs_nla_free_flow_actions(struct rcu_head *head) | |
2326 | { | |
2327 | ovs_nla_free_flow_actions(container_of(head, struct sw_flow_actions, rcu)); | |
2328 | } | |
2329 | ||
e6445719 PS |
2330 | /* Schedules 'sf_acts' to be freed after the next RCU grace period. |
2331 | * The caller must hold rcu_read_lock for this to be sensible. */ | |
34ae932a | 2332 | void ovs_nla_free_flow_actions_rcu(struct sw_flow_actions *sf_acts) |
e6445719 | 2333 | { |
34ae932a | 2334 | call_rcu(&sf_acts->rcu, __ovs_nla_free_flow_actions); |
e6445719 PS |
2335 | } |
2336 | ||
2337 | static struct nlattr *reserve_sfa_size(struct sw_flow_actions **sfa, | |
05da5898 | 2338 | int attr_len, bool log) |
e6445719 PS |
2339 | { |
2340 | ||
2341 | struct sw_flow_actions *acts; | |
2342 | int new_acts_size; | |
f28cd2af | 2343 | size_t req_size = NLA_ALIGN(attr_len); |
e6445719 PS |
2344 | int next_offset = offsetof(struct sw_flow_actions, actions) + |
2345 | (*sfa)->actions_len; | |
2346 | ||
2347 | if (req_size <= (ksize(*sfa) - next_offset)) | |
2348 | goto out; | |
2349 | ||
f28cd2af | 2350 | new_acts_size = max(next_offset + req_size, ksize(*sfa) * 2); |
e6445719 PS |
2351 | |
2352 | if (new_acts_size > MAX_ACTIONS_BUFSIZE) { | |
67c8d22a | 2353 | if ((MAX_ACTIONS_BUFSIZE - next_offset) < req_size) { |
2354 | OVS_NLERR(log, "Flow action size exceeds max %u", | |
2355 | MAX_ACTIONS_BUFSIZE); | |
e6445719 | 2356 | return ERR_PTR(-EMSGSIZE); |
67c8d22a | 2357 | } |
e6445719 PS |
2358 | new_acts_size = MAX_ACTIONS_BUFSIZE; |
2359 | } | |
2360 | ||
67c8d22a | 2361 | acts = nla_alloc_flow_actions(new_acts_size); |
e6445719 PS |
2362 | if (IS_ERR(acts)) |
2363 | return (void *)acts; | |
2364 | ||
2365 | memcpy(acts->actions, (*sfa)->actions, (*sfa)->actions_len); | |
2366 | acts->actions_len = (*sfa)->actions_len; | |
8e2fed1c | 2367 | acts->orig_len = (*sfa)->orig_len; |
e6445719 PS |
2368 | kfree(*sfa); |
2369 | *sfa = acts; | |
2370 | ||
2371 | out: | |
2372 | (*sfa)->actions_len += req_size; | |
2373 | return (struct nlattr *) ((unsigned char *)(*sfa) + next_offset); | |
2374 | } | |
2375 | ||
f0b128c1 | 2376 | static struct nlattr *__add_action(struct sw_flow_actions **sfa, |
05da5898 | 2377 | int attrtype, void *data, int len, bool log) |
e6445719 PS |
2378 | { |
2379 | struct nlattr *a; | |
2380 | ||
05da5898 | 2381 | a = reserve_sfa_size(sfa, nla_attr_size(len), log); |
e6445719 | 2382 | if (IS_ERR(a)) |
f0b128c1 | 2383 | return a; |
e6445719 PS |
2384 | |
2385 | a->nla_type = attrtype; | |
2386 | a->nla_len = nla_attr_size(len); | |
2387 | ||
2388 | if (data) | |
2389 | memcpy(nla_data(a), data, len); | |
2390 | memset((unsigned char *) a + a->nla_len, 0, nla_padlen(len)); | |
2391 | ||
f0b128c1 JG |
2392 | return a; |
2393 | } | |
2394 | ||
7f8a436e JS |
2395 | int ovs_nla_add_action(struct sw_flow_actions **sfa, int attrtype, void *data, |
2396 | int len, bool log) | |
f0b128c1 JG |
2397 | { |
2398 | struct nlattr *a; | |
2399 | ||
05da5898 | 2400 | a = __add_action(sfa, attrtype, data, len, log); |
f0b128c1 | 2401 | |
f35423c1 | 2402 | return PTR_ERR_OR_ZERO(a); |
e6445719 PS |
2403 | } |
2404 | ||
2405 | static inline int add_nested_action_start(struct sw_flow_actions **sfa, | |
05da5898 | 2406 | int attrtype, bool log) |
e6445719 PS |
2407 | { |
2408 | int used = (*sfa)->actions_len; | |
2409 | int err; | |
2410 | ||
7f8a436e | 2411 | err = ovs_nla_add_action(sfa, attrtype, NULL, 0, log); |
e6445719 PS |
2412 | if (err) |
2413 | return err; | |
2414 | ||
2415 | return used; | |
2416 | } | |
2417 | ||
2418 | static inline void add_nested_action_end(struct sw_flow_actions *sfa, | |
2419 | int st_offset) | |
2420 | { | |
2421 | struct nlattr *a = (struct nlattr *) ((unsigned char *)sfa->actions + | |
2422 | st_offset); | |
2423 | ||
2424 | a->nla_len = sfa->actions_len - st_offset; | |
2425 | } | |
2426 | ||
7f8a436e | 2427 | static int __ovs_nla_copy_actions(struct net *net, const struct nlattr *attr, |
25cd9ba0 | 2428 | const struct sw_flow_key *key, |
798c1661 | 2429 | struct sw_flow_actions **sfa, |
fbdcdd78 MV |
2430 | __be16 eth_type, __be16 vlan_tci, |
2431 | u32 mpls_label_count, bool log); | |
25cd9ba0 | 2432 | |
7f8a436e | 2433 | static int validate_and_copy_sample(struct net *net, const struct nlattr *attr, |
798c1661 | 2434 | const struct sw_flow_key *key, |
25cd9ba0 | 2435 | struct sw_flow_actions **sfa, |
798c1661 | 2436 | __be16 eth_type, __be16 vlan_tci, |
fbdcdd78 | 2437 | u32 mpls_label_count, bool log, bool last) |
e6445719 PS |
2438 | { |
2439 | const struct nlattr *attrs[OVS_SAMPLE_ATTR_MAX + 1]; | |
2440 | const struct nlattr *probability, *actions; | |
2441 | const struct nlattr *a; | |
798c1661 | 2442 | int rem, start, err; |
2443 | struct sample_arg arg; | |
e6445719 PS |
2444 | |
2445 | memset(attrs, 0, sizeof(attrs)); | |
2446 | nla_for_each_nested(a, attr, rem) { | |
2447 | int type = nla_type(a); | |
2448 | if (!type || type > OVS_SAMPLE_ATTR_MAX || attrs[type]) | |
2449 | return -EINVAL; | |
2450 | attrs[type] = a; | |
2451 | } | |
2452 | if (rem) | |
2453 | return -EINVAL; | |
2454 | ||
2455 | probability = attrs[OVS_SAMPLE_ATTR_PROBABILITY]; | |
2456 | if (!probability || nla_len(probability) != sizeof(u32)) | |
2457 | return -EINVAL; | |
2458 | ||
2459 | actions = attrs[OVS_SAMPLE_ATTR_ACTIONS]; | |
2460 | if (!actions || (nla_len(actions) && nla_len(actions) < NLA_HDRLEN)) | |
2461 | return -EINVAL; | |
2462 | ||
2463 | /* validation done, copy sample action. */ | |
05da5898 | 2464 | start = add_nested_action_start(sfa, OVS_ACTION_ATTR_SAMPLE, log); |
e6445719 PS |
2465 | if (start < 0) |
2466 | return start; | |
798c1661 | 2467 | |
2468 | /* When both skb and flow may be changed, put the sample | |
2469 | * into a deferred fifo. On the other hand, if only skb | |
2470 | * may be modified, the actions can be executed in place. | |
2471 | * | |
2472 | * Do this analysis at the flow installation time. | |
2473 | * Set 'clone_action->exec' to true if the actions can be | |
2474 | * executed without being deferred. | |
2475 | * | |
2476 | * If the sample is the last action, it can always be excuted | |
2477 | * rather than deferred. | |
2478 | */ | |
2479 | arg.exec = last || !actions_may_change_flow(actions); | |
2480 | arg.probability = nla_get_u32(probability); | |
2481 | ||
2482 | err = ovs_nla_add_action(sfa, OVS_SAMPLE_ATTR_ARG, &arg, sizeof(arg), | |
2483 | log); | |
e6445719 PS |
2484 | if (err) |
2485 | return err; | |
e6445719 | 2486 | |
798c1661 | 2487 | err = __ovs_nla_copy_actions(net, actions, key, sfa, |
fbdcdd78 | 2488 | eth_type, vlan_tci, mpls_label_count, log); |
798c1661 | 2489 | |
e6445719 PS |
2490 | if (err) |
2491 | return err; | |
2492 | ||
e6445719 PS |
2493 | add_nested_action_end(*sfa, start); |
2494 | ||
2495 | return 0; | |
2496 | } | |
2497 | ||
b2335040 YS |
2498 | static int validate_and_copy_clone(struct net *net, |
2499 | const struct nlattr *attr, | |
2500 | const struct sw_flow_key *key, | |
2501 | struct sw_flow_actions **sfa, | |
2502 | __be16 eth_type, __be16 vlan_tci, | |
fbdcdd78 | 2503 | u32 mpls_label_count, bool log, bool last) |
b2335040 YS |
2504 | { |
2505 | int start, err; | |
2506 | u32 exec; | |
2507 | ||
2508 | if (nla_len(attr) && nla_len(attr) < NLA_HDRLEN) | |
2509 | return -EINVAL; | |
2510 | ||
2511 | start = add_nested_action_start(sfa, OVS_ACTION_ATTR_CLONE, log); | |
2512 | if (start < 0) | |
2513 | return start; | |
2514 | ||
2515 | exec = last || !actions_may_change_flow(attr); | |
2516 | ||
2517 | err = ovs_nla_add_action(sfa, OVS_CLONE_ATTR_EXEC, &exec, | |
2518 | sizeof(exec), log); | |
2519 | if (err) | |
2520 | return err; | |
2521 | ||
2522 | err = __ovs_nla_copy_actions(net, attr, key, sfa, | |
fbdcdd78 | 2523 | eth_type, vlan_tci, mpls_label_count, log); |
b2335040 YS |
2524 | if (err) |
2525 | return err; | |
2526 | ||
2527 | add_nested_action_end(*sfa, start); | |
2528 | ||
2529 | return 0; | |
2530 | } | |
2531 | ||
e6445719 PS |
2532 | void ovs_match_init(struct sw_flow_match *match, |
2533 | struct sw_flow_key *key, | |
2279994d | 2534 | bool reset_key, |
e6445719 PS |
2535 | struct sw_flow_mask *mask) |
2536 | { | |
2537 | memset(match, 0, sizeof(*match)); | |
2538 | match->key = key; | |
2539 | match->mask = mask; | |
2540 | ||
2279994d | 2541 | if (reset_key) |
2542 | memset(key, 0, sizeof(*key)); | |
e6445719 PS |
2543 | |
2544 | if (mask) { | |
2545 | memset(&mask->key, 0, sizeof(mask->key)); | |
2546 | mask->range.start = mask->range.end = 0; | |
2547 | } | |
2548 | } | |
2549 | ||
d91641d9 TG |
2550 | static int validate_geneve_opts(struct sw_flow_key *key) |
2551 | { | |
2552 | struct geneve_opt *option; | |
2553 | int opts_len = key->tun_opts_len; | |
2554 | bool crit_opt = false; | |
2555 | ||
2556 | option = (struct geneve_opt *)TUN_METADATA_OPTS(key, key->tun_opts_len); | |
2557 | while (opts_len > 0) { | |
2558 | int len; | |
2559 | ||
2560 | if (opts_len < sizeof(*option)) | |
2561 | return -EINVAL; | |
2562 | ||
2563 | len = sizeof(*option) + option->length * 4; | |
2564 | if (len > opts_len) | |
2565 | return -EINVAL; | |
2566 | ||
2567 | crit_opt |= !!(option->type & GENEVE_CRIT_OPT_TYPE); | |
2568 | ||
2569 | option = (struct geneve_opt *)((u8 *)option + len); | |
2570 | opts_len -= len; | |
89290b83 | 2571 | } |
d91641d9 TG |
2572 | |
2573 | key->tun_key.tun_flags |= crit_opt ? TUNNEL_CRIT_OPT : 0; | |
2574 | ||
2575 | return 0; | |
2576 | } | |
2577 | ||
e6445719 | 2578 | static int validate_and_copy_set_tun(const struct nlattr *attr, |
05da5898 | 2579 | struct sw_flow_actions **sfa, bool log) |
e6445719 PS |
2580 | { |
2581 | struct sw_flow_match match; | |
2582 | struct sw_flow_key key; | |
34ae932a | 2583 | struct metadata_dst *tun_dst; |
1d8fff90 | 2584 | struct ip_tunnel_info *tun_info; |
34ae932a | 2585 | struct ovs_tunnel_info *ovs_tun; |
f0b128c1 | 2586 | struct nlattr *a; |
13101602 | 2587 | int err = 0, start, opts_type; |
256c87c1 | 2588 | __be16 dst_opt_type; |
e6445719 | 2589 | |
256c87c1 | 2590 | dst_opt_type = 0; |
2279994d | 2591 | ovs_match_init(&match, &key, true, NULL); |
6b26ba3a | 2592 | opts_type = ip_tun_from_nlattr(nla_data(attr), &match, false, log); |
1dd144cf TG |
2593 | if (opts_type < 0) |
2594 | return opts_type; | |
e6445719 | 2595 | |
f5796684 | 2596 | if (key.tun_opts_len) { |
1dd144cf TG |
2597 | switch (opts_type) { |
2598 | case OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS: | |
2599 | err = validate_geneve_opts(&key); | |
2600 | if (err < 0) | |
2601 | return err; | |
256c87c1 | 2602 | dst_opt_type = TUNNEL_GENEVE_OPT; |
1dd144cf TG |
2603 | break; |
2604 | case OVS_TUNNEL_KEY_ATTR_VXLAN_OPTS: | |
256c87c1 | 2605 | dst_opt_type = TUNNEL_VXLAN_OPT; |
1dd144cf | 2606 | break; |
fc1372f8 | 2607 | case OVS_TUNNEL_KEY_ATTR_ERSPAN_OPTS: |
256c87c1 | 2608 | dst_opt_type = TUNNEL_ERSPAN_OPT; |
fc1372f8 | 2609 | break; |
1dd144cf | 2610 | } |
89290b83 | 2611 | } |
f5796684 | 2612 | |
05da5898 | 2613 | start = add_nested_action_start(sfa, OVS_ACTION_ATTR_SET, log); |
e6445719 PS |
2614 | if (start < 0) |
2615 | return start; | |
2616 | ||
3fcece12 JK |
2617 | tun_dst = metadata_dst_alloc(key.tun_opts_len, METADATA_IP_TUNNEL, |
2618 | GFP_KERNEL); | |
2619 | ||
34ae932a TG |
2620 | if (!tun_dst) |
2621 | return -ENOMEM; | |
2622 | ||
d71785ff PA |
2623 | err = dst_cache_init(&tun_dst->u.tun_info.dst_cache, GFP_KERNEL); |
2624 | if (err) { | |
2625 | dst_release((struct dst_entry *)tun_dst); | |
2626 | return err; | |
2627 | } | |
2628 | ||
f0b128c1 | 2629 | a = __add_action(sfa, OVS_KEY_ATTR_TUNNEL_INFO, NULL, |
34ae932a TG |
2630 | sizeof(*ovs_tun), log); |
2631 | if (IS_ERR(a)) { | |
2632 | dst_release((struct dst_entry *)tun_dst); | |
f0b128c1 | 2633 | return PTR_ERR(a); |
34ae932a TG |
2634 | } |
2635 | ||
2636 | ovs_tun = nla_data(a); | |
2637 | ovs_tun->tun_dst = tun_dst; | |
f0b128c1 | 2638 | |
34ae932a TG |
2639 | tun_info = &tun_dst->u.tun_info; |
2640 | tun_info->mode = IP_TUNNEL_INFO_TX; | |
00a93bab JB |
2641 | if (key.tun_proto == AF_INET6) |
2642 | tun_info->mode |= IP_TUNNEL_INFO_IPV6; | |
18b6f717 | 2643 | else if (key.tun_proto == AF_INET && key.tun_key.u.ipv4.dst == 0) |
2644 | tun_info->mode |= IP_TUNNEL_INFO_BRIDGE; | |
1d8fff90 | 2645 | tun_info->key = key.tun_key; |
f0b128c1 | 2646 | |
4c222798 PS |
2647 | /* We need to store the options in the action itself since |
2648 | * everything else will go away after flow setup. We can append | |
2649 | * it to tun_info and then point there. | |
2650 | */ | |
2651 | ip_tunnel_info_opts_set(tun_info, | |
2652 | TUN_METADATA_OPTS(&key, key.tun_opts_len), | |
256c87c1 | 2653 | key.tun_opts_len, dst_opt_type); |
e6445719 PS |
2654 | add_nested_action_end(*sfa, start); |
2655 | ||
2656 | return err; | |
2657 | } | |
2658 | ||
b2d0f5d5 YY |
2659 | static bool validate_nsh(const struct nlattr *attr, bool is_mask, |
2660 | bool is_push_nsh, bool log) | |
2661 | { | |
2662 | struct sw_flow_match match; | |
2663 | struct sw_flow_key key; | |
2664 | int ret = 0; | |
2665 | ||
2666 | ovs_match_init(&match, &key, true, NULL); | |
2667 | ret = nsh_key_put_from_nlattr(attr, &match, is_mask, | |
2668 | is_push_nsh, log); | |
2669 | return !ret; | |
2670 | } | |
2671 | ||
83d2b9ba JR |
2672 | /* Return false if there are any non-masked bits set. |
2673 | * Mask follows data immediately, before any netlink padding. | |
2674 | */ | |
2675 | static bool validate_masked(u8 *data, int len) | |
2676 | { | |
2677 | u8 *mask = data + len; | |
2678 | ||
2679 | while (len--) | |
2680 | if (*data++ & ~*mask++) | |
2681 | return false; | |
2682 | ||
2683 | return true; | |
2684 | } | |
2685 | ||
e6445719 PS |
2686 | static int validate_set(const struct nlattr *a, |
2687 | const struct sw_flow_key *flow_key, | |
0a6410fb JB |
2688 | struct sw_flow_actions **sfa, bool *skip_copy, |
2689 | u8 mac_proto, __be16 eth_type, bool masked, bool log) | |
e6445719 PS |
2690 | { |
2691 | const struct nlattr *ovs_key = nla_data(a); | |
2692 | int key_type = nla_type(ovs_key); | |
83d2b9ba | 2693 | size_t key_len; |
e6445719 PS |
2694 | |
2695 | /* There can be only one key in a action */ | |
2696 | if (nla_total_size(nla_len(ovs_key)) != nla_len(a)) | |
2697 | return -EINVAL; | |
2698 | ||
83d2b9ba JR |
2699 | key_len = nla_len(ovs_key); |
2700 | if (masked) | |
2701 | key_len /= 2; | |
2702 | ||
e6445719 | 2703 | if (key_type > OVS_KEY_ATTR_MAX || |
982b5270 | 2704 | !check_attr_len(key_len, ovs_key_lens[key_type].len)) |
e6445719 PS |
2705 | return -EINVAL; |
2706 | ||
83d2b9ba JR |
2707 | if (masked && !validate_masked(nla_data(ovs_key), key_len)) |
2708 | return -EINVAL; | |
2709 | ||
e6445719 | 2710 | switch (key_type) { |
e6445719 PS |
2711 | case OVS_KEY_ATTR_PRIORITY: |
2712 | case OVS_KEY_ATTR_SKB_MARK: | |
182e3042 | 2713 | case OVS_KEY_ATTR_CT_MARK: |
33db4125 | 2714 | case OVS_KEY_ATTR_CT_LABELS: |
e6445719 PS |
2715 | break; |
2716 | ||
0a6410fb JB |
2717 | case OVS_KEY_ATTR_ETHERNET: |
2718 | if (mac_proto != MAC_PROTO_ETHERNET) | |
2719 | return -EINVAL; | |
87e159c5 | 2720 | break; |
0a6410fb | 2721 | |
16a556ee KC |
2722 | case OVS_KEY_ATTR_TUNNEL: { |
2723 | int err; | |
2724 | ||
83d2b9ba JR |
2725 | if (masked) |
2726 | return -EINVAL; /* Masked tunnel set not supported. */ | |
2727 | ||
2728 | *skip_copy = true; | |
05da5898 | 2729 | err = validate_and_copy_set_tun(a, sfa, log); |
e6445719 PS |
2730 | if (err) |
2731 | return err; | |
2732 | break; | |
16a556ee KC |
2733 | } |
2734 | case OVS_KEY_ATTR_IPV4: { | |
2735 | const struct ovs_key_ipv4 *ipv4_key; | |
e6445719 | 2736 | |
25cd9ba0 | 2737 | if (eth_type != htons(ETH_P_IP)) |
e6445719 PS |
2738 | return -EINVAL; |
2739 | ||
e6445719 | 2740 | ipv4_key = nla_data(ovs_key); |
e6445719 | 2741 | |
83d2b9ba JR |
2742 | if (masked) { |
2743 | const struct ovs_key_ipv4 *mask = ipv4_key + 1; | |
e6445719 | 2744 | |
83d2b9ba JR |
2745 | /* Non-writeable fields. */ |
2746 | if (mask->ipv4_proto || mask->ipv4_frag) | |
2747 | return -EINVAL; | |
2748 | } else { | |
2749 | if (ipv4_key->ipv4_proto != flow_key->ip.proto) | |
2750 | return -EINVAL; | |
2751 | ||
2752 | if (ipv4_key->ipv4_frag != flow_key->ip.frag) | |
2753 | return -EINVAL; | |
2754 | } | |
e6445719 | 2755 | break; |
16a556ee KC |
2756 | } |
2757 | case OVS_KEY_ATTR_IPV6: { | |
2758 | const struct ovs_key_ipv6 *ipv6_key; | |
e6445719 | 2759 | |
25cd9ba0 | 2760 | if (eth_type != htons(ETH_P_IPV6)) |
e6445719 PS |
2761 | return -EINVAL; |
2762 | ||
e6445719 | 2763 | ipv6_key = nla_data(ovs_key); |
e6445719 | 2764 | |
83d2b9ba JR |
2765 | if (masked) { |
2766 | const struct ovs_key_ipv6 *mask = ipv6_key + 1; | |
2767 | ||
2768 | /* Non-writeable fields. */ | |
2769 | if (mask->ipv6_proto || mask->ipv6_frag) | |
2770 | return -EINVAL; | |
2771 | ||
2772 | /* Invalid bits in the flow label mask? */ | |
2773 | if (ntohl(mask->ipv6_label) & 0xFFF00000) | |
2774 | return -EINVAL; | |
2775 | } else { | |
2776 | if (ipv6_key->ipv6_proto != flow_key->ip.proto) | |
2777 | return -EINVAL; | |
e6445719 | 2778 | |
83d2b9ba JR |
2779 | if (ipv6_key->ipv6_frag != flow_key->ip.frag) |
2780 | return -EINVAL; | |
2781 | } | |
e6445719 PS |
2782 | if (ntohl(ipv6_key->ipv6_label) & 0xFFF00000) |
2783 | return -EINVAL; | |
2784 | ||
2785 | break; | |
16a556ee | 2786 | } |
e6445719 | 2787 | case OVS_KEY_ATTR_TCP: |
83d2b9ba JR |
2788 | if ((eth_type != htons(ETH_P_IP) && |
2789 | eth_type != htons(ETH_P_IPV6)) || | |
2790 | flow_key->ip.proto != IPPROTO_TCP) | |
e6445719 PS |
2791 | return -EINVAL; |
2792 | ||
83d2b9ba | 2793 | break; |
e6445719 PS |
2794 | |
2795 | case OVS_KEY_ATTR_UDP: | |
83d2b9ba JR |
2796 | if ((eth_type != htons(ETH_P_IP) && |
2797 | eth_type != htons(ETH_P_IPV6)) || | |
2798 | flow_key->ip.proto != IPPROTO_UDP) | |
e6445719 PS |
2799 | return -EINVAL; |
2800 | ||
83d2b9ba | 2801 | break; |
25cd9ba0 SH |
2802 | |
2803 | case OVS_KEY_ATTR_MPLS: | |
2804 | if (!eth_p_mpls(eth_type)) | |
2805 | return -EINVAL; | |
2806 | break; | |
e6445719 PS |
2807 | |
2808 | case OVS_KEY_ATTR_SCTP: | |
83d2b9ba JR |
2809 | if ((eth_type != htons(ETH_P_IP) && |
2810 | eth_type != htons(ETH_P_IPV6)) || | |
2811 | flow_key->ip.proto != IPPROTO_SCTP) | |
e6445719 PS |
2812 | return -EINVAL; |
2813 | ||
83d2b9ba | 2814 | break; |
e6445719 | 2815 | |
b2d0f5d5 YY |
2816 | case OVS_KEY_ATTR_NSH: |
2817 | if (eth_type != htons(ETH_P_NSH)) | |
2818 | return -EINVAL; | |
2819 | if (!validate_nsh(nla_data(a), masked, false, log)) | |
2820 | return -EINVAL; | |
2821 | break; | |
2822 | ||
e6445719 PS |
2823 | default: |
2824 | return -EINVAL; | |
2825 | } | |
2826 | ||
83d2b9ba JR |
2827 | /* Convert non-masked non-tunnel set actions to masked set actions. */ |
2828 | if (!masked && key_type != OVS_KEY_ATTR_TUNNEL) { | |
2829 | int start, len = key_len * 2; | |
2830 | struct nlattr *at; | |
2831 | ||
2832 | *skip_copy = true; | |
2833 | ||
2834 | start = add_nested_action_start(sfa, | |
2835 | OVS_ACTION_ATTR_SET_TO_MASKED, | |
2836 | log); | |
2837 | if (start < 0) | |
2838 | return start; | |
2839 | ||
2840 | at = __add_action(sfa, key_type, NULL, len, log); | |
2841 | if (IS_ERR(at)) | |
2842 | return PTR_ERR(at); | |
2843 | ||
2844 | memcpy(nla_data(at), nla_data(ovs_key), key_len); /* Key. */ | |
2845 | memset(nla_data(at) + key_len, 0xff, key_len); /* Mask. */ | |
2846 | /* Clear non-writeable bits from otherwise writeable fields. */ | |
2847 | if (key_type == OVS_KEY_ATTR_IPV6) { | |
2848 | struct ovs_key_ipv6 *mask = nla_data(at) + key_len; | |
2849 | ||
2850 | mask->ipv6_label &= htonl(0x000FFFFF); | |
2851 | } | |
2852 | add_nested_action_end(*sfa, start); | |
2853 | } | |
2854 | ||
e6445719 PS |
2855 | return 0; |
2856 | } | |
2857 | ||
2858 | static int validate_userspace(const struct nlattr *attr) | |
2859 | { | |
2860 | static const struct nla_policy userspace_policy[OVS_USERSPACE_ATTR_MAX + 1] = { | |
2861 | [OVS_USERSPACE_ATTR_PID] = {.type = NLA_U32 }, | |
2862 | [OVS_USERSPACE_ATTR_USERDATA] = {.type = NLA_UNSPEC }, | |
8f0aad6f | 2863 | [OVS_USERSPACE_ATTR_EGRESS_TUN_PORT] = {.type = NLA_U32 }, |
e6445719 PS |
2864 | }; |
2865 | struct nlattr *a[OVS_USERSPACE_ATTR_MAX + 1]; | |
2866 | int error; | |
2867 | ||
8cb08174 JB |
2868 | error = nla_parse_nested_deprecated(a, OVS_USERSPACE_ATTR_MAX, attr, |
2869 | userspace_policy, NULL); | |
e6445719 PS |
2870 | if (error) |
2871 | return error; | |
2872 | ||
2873 | if (!a[OVS_USERSPACE_ATTR_PID] || | |
2874 | !nla_get_u32(a[OVS_USERSPACE_ATTR_PID])) | |
2875 | return -EINVAL; | |
2876 | ||
2877 | return 0; | |
2878 | } | |
2879 | ||
4d5ec89f NS |
2880 | static const struct nla_policy cpl_policy[OVS_CHECK_PKT_LEN_ATTR_MAX + 1] = { |
2881 | [OVS_CHECK_PKT_LEN_ATTR_PKT_LEN] = {.type = NLA_U16 }, | |
2882 | [OVS_CHECK_PKT_LEN_ATTR_ACTIONS_IF_GREATER] = {.type = NLA_NESTED }, | |
2883 | [OVS_CHECK_PKT_LEN_ATTR_ACTIONS_IF_LESS_EQUAL] = {.type = NLA_NESTED }, | |
2884 | }; | |
2885 | ||
2886 | static int validate_and_copy_check_pkt_len(struct net *net, | |
2887 | const struct nlattr *attr, | |
2888 | const struct sw_flow_key *key, | |
2889 | struct sw_flow_actions **sfa, | |
2890 | __be16 eth_type, __be16 vlan_tci, | |
fbdcdd78 | 2891 | u32 mpls_label_count, |
4d5ec89f NS |
2892 | bool log, bool last) |
2893 | { | |
2894 | const struct nlattr *acts_if_greater, *acts_if_lesser_eq; | |
2895 | struct nlattr *a[OVS_CHECK_PKT_LEN_ATTR_MAX + 1]; | |
2896 | struct check_pkt_len_arg arg; | |
2897 | int nested_acts_start; | |
2898 | int start, err; | |
2899 | ||
8cb08174 JB |
2900 | err = nla_parse_deprecated_strict(a, OVS_CHECK_PKT_LEN_ATTR_MAX, |
2901 | nla_data(attr), nla_len(attr), | |
2902 | cpl_policy, NULL); | |
4d5ec89f NS |
2903 | if (err) |
2904 | return err; | |
2905 | ||
2906 | if (!a[OVS_CHECK_PKT_LEN_ATTR_PKT_LEN] || | |
2907 | !nla_get_u16(a[OVS_CHECK_PKT_LEN_ATTR_PKT_LEN])) | |
2908 | return -EINVAL; | |
2909 | ||
2910 | acts_if_lesser_eq = a[OVS_CHECK_PKT_LEN_ATTR_ACTIONS_IF_LESS_EQUAL]; | |
2911 | acts_if_greater = a[OVS_CHECK_PKT_LEN_ATTR_ACTIONS_IF_GREATER]; | |
2912 | ||
2913 | /* Both the nested action should be present. */ | |
2914 | if (!acts_if_greater || !acts_if_lesser_eq) | |
2915 | return -EINVAL; | |
2916 | ||
2917 | /* validation done, copy the nested actions. */ | |
2918 | start = add_nested_action_start(sfa, OVS_ACTION_ATTR_CHECK_PKT_LEN, | |
2919 | log); | |
2920 | if (start < 0) | |
2921 | return start; | |
2922 | ||
2923 | arg.pkt_len = nla_get_u16(a[OVS_CHECK_PKT_LEN_ATTR_PKT_LEN]); | |
2924 | arg.exec_for_lesser_equal = | |
2925 | last || !actions_may_change_flow(acts_if_lesser_eq); | |
2926 | arg.exec_for_greater = | |
2927 | last || !actions_may_change_flow(acts_if_greater); | |
2928 | ||
2929 | err = ovs_nla_add_action(sfa, OVS_CHECK_PKT_LEN_ATTR_ARG, &arg, | |
2930 | sizeof(arg), log); | |
2931 | if (err) | |
2932 | return err; | |
2933 | ||
2934 | nested_acts_start = add_nested_action_start(sfa, | |
2935 | OVS_CHECK_PKT_LEN_ATTR_ACTIONS_IF_LESS_EQUAL, log); | |
2936 | if (nested_acts_start < 0) | |
2937 | return nested_acts_start; | |
2938 | ||
2939 | err = __ovs_nla_copy_actions(net, acts_if_lesser_eq, key, sfa, | |
fbdcdd78 | 2940 | eth_type, vlan_tci, mpls_label_count, log); |
4d5ec89f NS |
2941 | |
2942 | if (err) | |
2943 | return err; | |
2944 | ||
2945 | add_nested_action_end(*sfa, nested_acts_start); | |
2946 | ||
2947 | nested_acts_start = add_nested_action_start(sfa, | |
2948 | OVS_CHECK_PKT_LEN_ATTR_ACTIONS_IF_GREATER, log); | |
2949 | if (nested_acts_start < 0) | |
2950 | return nested_acts_start; | |
2951 | ||
2952 | err = __ovs_nla_copy_actions(net, acts_if_greater, key, sfa, | |
fbdcdd78 | 2953 | eth_type, vlan_tci, mpls_label_count, log); |
4d5ec89f NS |
2954 | |
2955 | if (err) | |
2956 | return err; | |
2957 | ||
2958 | add_nested_action_end(*sfa, nested_acts_start); | |
2959 | add_nested_action_end(*sfa, start); | |
2960 | return 0; | |
2961 | } | |
2962 | ||
e6445719 | 2963 | static int copy_action(const struct nlattr *from, |
05da5898 | 2964 | struct sw_flow_actions **sfa, bool log) |
e6445719 PS |
2965 | { |
2966 | int totlen = NLA_ALIGN(from->nla_len); | |
2967 | struct nlattr *to; | |
2968 | ||
05da5898 | 2969 | to = reserve_sfa_size(sfa, from->nla_len, log); |
e6445719 PS |
2970 | if (IS_ERR(to)) |
2971 | return PTR_ERR(to); | |
2972 | ||
2973 | memcpy(to, from, totlen); | |
2974 | return 0; | |
2975 | } | |
2976 | ||
7f8a436e | 2977 | static int __ovs_nla_copy_actions(struct net *net, const struct nlattr *attr, |
25cd9ba0 | 2978 | const struct sw_flow_key *key, |
798c1661 | 2979 | struct sw_flow_actions **sfa, |
fbdcdd78 MV |
2980 | __be16 eth_type, __be16 vlan_tci, |
2981 | u32 mpls_label_count, bool log) | |
e6445719 | 2982 | { |
0a6410fb | 2983 | u8 mac_proto = ovs_key_mac_proto(key); |
e6445719 PS |
2984 | const struct nlattr *a; |
2985 | int rem, err; | |
2986 | ||
e6445719 PS |
2987 | nla_for_each_nested(a, attr, rem) { |
2988 | /* Expected argument lengths, (u32)-1 for variable length. */ | |
2989 | static const u32 action_lens[OVS_ACTION_ATTR_MAX + 1] = { | |
2990 | [OVS_ACTION_ATTR_OUTPUT] = sizeof(u32), | |
971427f3 | 2991 | [OVS_ACTION_ATTR_RECIRC] = sizeof(u32), |
e6445719 | 2992 | [OVS_ACTION_ATTR_USERSPACE] = (u32)-1, |
25cd9ba0 SH |
2993 | [OVS_ACTION_ATTR_PUSH_MPLS] = sizeof(struct ovs_action_push_mpls), |
2994 | [OVS_ACTION_ATTR_POP_MPLS] = sizeof(__be16), | |
e6445719 PS |
2995 | [OVS_ACTION_ATTR_PUSH_VLAN] = sizeof(struct ovs_action_push_vlan), |
2996 | [OVS_ACTION_ATTR_POP_VLAN] = 0, | |
2997 | [OVS_ACTION_ATTR_SET] = (u32)-1, | |
83d2b9ba | 2998 | [OVS_ACTION_ATTR_SET_MASKED] = (u32)-1, |
971427f3 | 2999 | [OVS_ACTION_ATTR_SAMPLE] = (u32)-1, |
7f8a436e JS |
3000 | [OVS_ACTION_ATTR_HASH] = sizeof(struct ovs_action_hash), |
3001 | [OVS_ACTION_ATTR_CT] = (u32)-1, | |
b8226962 | 3002 | [OVS_ACTION_ATTR_CT_CLEAR] = 0, |
f2a4d086 | 3003 | [OVS_ACTION_ATTR_TRUNC] = sizeof(struct ovs_action_trunc), |
91820da6 JB |
3004 | [OVS_ACTION_ATTR_PUSH_ETH] = sizeof(struct ovs_action_push_eth), |
3005 | [OVS_ACTION_ATTR_POP_ETH] = 0, | |
b2d0f5d5 YY |
3006 | [OVS_ACTION_ATTR_PUSH_NSH] = (u32)-1, |
3007 | [OVS_ACTION_ATTR_POP_NSH] = 0, | |
cd8a6c33 | 3008 | [OVS_ACTION_ATTR_METER] = sizeof(u32), |
b2335040 | 3009 | [OVS_ACTION_ATTR_CLONE] = (u32)-1, |
4d5ec89f | 3010 | [OVS_ACTION_ATTR_CHECK_PKT_LEN] = (u32)-1, |
f66b53fd | 3011 | [OVS_ACTION_ATTR_ADD_MPLS] = sizeof(struct ovs_action_add_mpls), |
e6445719 PS |
3012 | }; |
3013 | const struct ovs_action_push_vlan *vlan; | |
3014 | int type = nla_type(a); | |
3015 | bool skip_copy; | |
3016 | ||
3017 | if (type > OVS_ACTION_ATTR_MAX || | |
3018 | (action_lens[type] != nla_len(a) && | |
3019 | action_lens[type] != (u32)-1)) | |
3020 | return -EINVAL; | |
3021 | ||
3022 | skip_copy = false; | |
3023 | switch (type) { | |
3024 | case OVS_ACTION_ATTR_UNSPEC: | |
3025 | return -EINVAL; | |
3026 | ||
3027 | case OVS_ACTION_ATTR_USERSPACE: | |
3028 | err = validate_userspace(a); | |
3029 | if (err) | |
3030 | return err; | |
3031 | break; | |
3032 | ||
3033 | case OVS_ACTION_ATTR_OUTPUT: | |
3034 | if (nla_get_u32(a) >= DP_MAX_PORTS) | |
3035 | return -EINVAL; | |
3036 | break; | |
3037 | ||
f2a4d086 WT |
3038 | case OVS_ACTION_ATTR_TRUNC: { |
3039 | const struct ovs_action_trunc *trunc = nla_data(a); | |
3040 | ||
3041 | if (trunc->max_len < ETH_HLEN) | |
3042 | return -EINVAL; | |
3043 | break; | |
3044 | } | |
3045 | ||
971427f3 AZ |
3046 | case OVS_ACTION_ATTR_HASH: { |
3047 | const struct ovs_action_hash *act_hash = nla_data(a); | |
3048 | ||
3049 | switch (act_hash->hash_alg) { | |
3050 | case OVS_HASH_ALG_L4: | |
3051 | break; | |
3052 | default: | |
3053 | return -EINVAL; | |
3054 | } | |
3055 | ||
3056 | break; | |
3057 | } | |
e6445719 PS |
3058 | |
3059 | case OVS_ACTION_ATTR_POP_VLAN: | |
0a6410fb JB |
3060 | if (mac_proto != MAC_PROTO_ETHERNET) |
3061 | return -EINVAL; | |
25cd9ba0 | 3062 | vlan_tci = htons(0); |
e6445719 PS |
3063 | break; |
3064 | ||
3065 | case OVS_ACTION_ATTR_PUSH_VLAN: | |
0a6410fb JB |
3066 | if (mac_proto != MAC_PROTO_ETHERNET) |
3067 | return -EINVAL; | |
e6445719 | 3068 | vlan = nla_data(a); |
018c1dda | 3069 | if (!eth_type_vlan(vlan->vlan_tpid)) |
e6445719 | 3070 | return -EINVAL; |
9df46aef | 3071 | if (!(vlan->vlan_tci & htons(VLAN_CFI_MASK))) |
e6445719 | 3072 | return -EINVAL; |
25cd9ba0 | 3073 | vlan_tci = vlan->vlan_tci; |
e6445719 PS |
3074 | break; |
3075 | ||
971427f3 AZ |
3076 | case OVS_ACTION_ATTR_RECIRC: |
3077 | break; | |
3078 | ||
f66b53fd MV |
3079 | case OVS_ACTION_ATTR_ADD_MPLS: { |
3080 | const struct ovs_action_add_mpls *mpls = nla_data(a); | |
3081 | ||
3082 | if (!eth_p_mpls(mpls->mpls_ethertype)) | |
3083 | return -EINVAL; | |
3084 | ||
3085 | if (mpls->tun_flags & OVS_MPLS_L3_TUNNEL_FLAG_MASK) { | |
3086 | if (vlan_tci & htons(VLAN_CFI_MASK) || | |
3087 | (eth_type != htons(ETH_P_IP) && | |
3088 | eth_type != htons(ETH_P_IPV6) && | |
3089 | eth_type != htons(ETH_P_ARP) && | |
3090 | eth_type != htons(ETH_P_RARP) && | |
3091 | !eth_p_mpls(eth_type))) | |
3092 | return -EINVAL; | |
3093 | mpls_label_count++; | |
3094 | } else { | |
3095 | if (mac_proto == MAC_PROTO_ETHERNET) { | |
3096 | mpls_label_count = 1; | |
3097 | mac_proto = MAC_PROTO_NONE; | |
3098 | } else { | |
3099 | mpls_label_count++; | |
3100 | } | |
3101 | } | |
3102 | eth_type = mpls->mpls_ethertype; | |
3103 | break; | |
3104 | } | |
3105 | ||
25cd9ba0 SH |
3106 | case OVS_ACTION_ATTR_PUSH_MPLS: { |
3107 | const struct ovs_action_push_mpls *mpls = nla_data(a); | |
3108 | ||
25cd9ba0 SH |
3109 | if (!eth_p_mpls(mpls->mpls_ethertype)) |
3110 | return -EINVAL; | |
3111 | /* Prohibit push MPLS other than to a white list | |
3112 | * for packets that have a known tag order. | |
3113 | */ | |
9df46aef | 3114 | if (vlan_tci & htons(VLAN_CFI_MASK) || |
25cd9ba0 SH |
3115 | (eth_type != htons(ETH_P_IP) && |
3116 | eth_type != htons(ETH_P_IPV6) && | |
3117 | eth_type != htons(ETH_P_ARP) && | |
3118 | eth_type != htons(ETH_P_RARP) && | |
3119 | !eth_p_mpls(eth_type))) | |
3120 | return -EINVAL; | |
3121 | eth_type = mpls->mpls_ethertype; | |
fbdcdd78 | 3122 | mpls_label_count++; |
25cd9ba0 SH |
3123 | break; |
3124 | } | |
3125 | ||
fbdcdd78 MV |
3126 | case OVS_ACTION_ATTR_POP_MPLS: { |
3127 | __be16 proto; | |
9df46aef | 3128 | if (vlan_tci & htons(VLAN_CFI_MASK) || |
25cd9ba0 SH |
3129 | !eth_p_mpls(eth_type)) |
3130 | return -EINVAL; | |
3131 | ||
fbdcdd78 MV |
3132 | /* Disallow subsequent L2.5+ set actions and mpls_pop |
3133 | * actions once the last MPLS label in the packet is | |
3134 | * is popped as there is no check here to ensure that | |
3135 | * the new eth type is valid and thus set actions could | |
3136 | * write off the end of the packet or otherwise corrupt | |
3137 | * it. | |
25cd9ba0 SH |
3138 | * |
3139 | * Support for these actions is planned using packet | |
3140 | * recirculation. | |
3141 | */ | |
fbdcdd78 | 3142 | proto = nla_get_be16(a); |
f66b53fd MV |
3143 | |
3144 | if (proto == htons(ETH_P_TEB) && | |
3145 | mac_proto != MAC_PROTO_NONE) | |
3146 | return -EINVAL; | |
3147 | ||
fbdcdd78 MV |
3148 | mpls_label_count--; |
3149 | ||
3150 | if (!eth_p_mpls(proto) || !mpls_label_count) | |
3151 | eth_type = htons(0); | |
3152 | else | |
3153 | eth_type = proto; | |
3154 | ||
25cd9ba0 | 3155 | break; |
fbdcdd78 | 3156 | } |
25cd9ba0 | 3157 | |
e6445719 | 3158 | case OVS_ACTION_ATTR_SET: |
25cd9ba0 | 3159 | err = validate_set(a, key, sfa, |
0a6410fb JB |
3160 | &skip_copy, mac_proto, eth_type, |
3161 | false, log); | |
83d2b9ba JR |
3162 | if (err) |
3163 | return err; | |
3164 | break; | |
3165 | ||
3166 | case OVS_ACTION_ATTR_SET_MASKED: | |
3167 | err = validate_set(a, key, sfa, | |
0a6410fb JB |
3168 | &skip_copy, mac_proto, eth_type, |
3169 | true, log); | |
e6445719 PS |
3170 | if (err) |
3171 | return err; | |
3172 | break; | |
3173 | ||
798c1661 | 3174 | case OVS_ACTION_ATTR_SAMPLE: { |
3175 | bool last = nla_is_last(a, rem); | |
3176 | ||
3177 | err = validate_and_copy_sample(net, a, key, sfa, | |
3178 | eth_type, vlan_tci, | |
fbdcdd78 | 3179 | mpls_label_count, |
798c1661 | 3180 | log, last); |
e6445719 PS |
3181 | if (err) |
3182 | return err; | |
3183 | skip_copy = true; | |
3184 | break; | |
798c1661 | 3185 | } |
e6445719 | 3186 | |
7f8a436e JS |
3187 | case OVS_ACTION_ATTR_CT: |
3188 | err = ovs_ct_copy_action(net, a, key, sfa, log); | |
3189 | if (err) | |
3190 | return err; | |
3191 | skip_copy = true; | |
3192 | break; | |
3193 | ||
b8226962 EG |
3194 | case OVS_ACTION_ATTR_CT_CLEAR: |
3195 | break; | |
3196 | ||
91820da6 JB |
3197 | case OVS_ACTION_ATTR_PUSH_ETH: |
3198 | /* Disallow pushing an Ethernet header if one | |
3199 | * is already present */ | |
3200 | if (mac_proto != MAC_PROTO_NONE) | |
3201 | return -EINVAL; | |
46ebe283 | 3202 | mac_proto = MAC_PROTO_ETHERNET; |
91820da6 JB |
3203 | break; |
3204 | ||
3205 | case OVS_ACTION_ATTR_POP_ETH: | |
3206 | if (mac_proto != MAC_PROTO_ETHERNET) | |
3207 | return -EINVAL; | |
9df46aef | 3208 | if (vlan_tci & htons(VLAN_CFI_MASK)) |
91820da6 | 3209 | return -EINVAL; |
46ebe283 | 3210 | mac_proto = MAC_PROTO_NONE; |
91820da6 JB |
3211 | break; |
3212 | ||
b2d0f5d5 YY |
3213 | case OVS_ACTION_ATTR_PUSH_NSH: |
3214 | if (mac_proto != MAC_PROTO_ETHERNET) { | |
3215 | u8 next_proto; | |
3216 | ||
3217 | next_proto = tun_p_from_eth_p(eth_type); | |
3218 | if (!next_proto) | |
3219 | return -EINVAL; | |
3220 | } | |
3221 | mac_proto = MAC_PROTO_NONE; | |
3222 | if (!validate_nsh(nla_data(a), false, true, true)) | |
3223 | return -EINVAL; | |
3224 | break; | |
3225 | ||
3226 | case OVS_ACTION_ATTR_POP_NSH: { | |
3227 | __be16 inner_proto; | |
3228 | ||
3229 | if (eth_type != htons(ETH_P_NSH)) | |
3230 | return -EINVAL; | |
3231 | inner_proto = tun_p_to_eth_p(key->nsh.base.np); | |
3232 | if (!inner_proto) | |
3233 | return -EINVAL; | |
3234 | if (key->nsh.base.np == TUN_P_ETHERNET) | |
3235 | mac_proto = MAC_PROTO_ETHERNET; | |
3236 | else | |
3237 | mac_proto = MAC_PROTO_NONE; | |
3238 | break; | |
3239 | } | |
3240 | ||
cd8a6c33 AZ |
3241 | case OVS_ACTION_ATTR_METER: |
3242 | /* Non-existent meters are simply ignored. */ | |
3243 | break; | |
3244 | ||
b2335040 YS |
3245 | case OVS_ACTION_ATTR_CLONE: { |
3246 | bool last = nla_is_last(a, rem); | |
3247 | ||
3248 | err = validate_and_copy_clone(net, a, key, sfa, | |
3249 | eth_type, vlan_tci, | |
fbdcdd78 | 3250 | mpls_label_count, |
b2335040 YS |
3251 | log, last); |
3252 | if (err) | |
3253 | return err; | |
3254 | skip_copy = true; | |
3255 | break; | |
3256 | } | |
3257 | ||
4d5ec89f NS |
3258 | case OVS_ACTION_ATTR_CHECK_PKT_LEN: { |
3259 | bool last = nla_is_last(a, rem); | |
3260 | ||
3261 | err = validate_and_copy_check_pkt_len(net, a, key, sfa, | |
3262 | eth_type, | |
fbdcdd78 MV |
3263 | vlan_tci, |
3264 | mpls_label_count, | |
3265 | log, last); | |
4d5ec89f NS |
3266 | if (err) |
3267 | return err; | |
3268 | skip_copy = true; | |
3269 | break; | |
3270 | } | |
3271 | ||
e6445719 | 3272 | default: |
05da5898 | 3273 | OVS_NLERR(log, "Unknown Action type %d", type); |
e6445719 PS |
3274 | return -EINVAL; |
3275 | } | |
3276 | if (!skip_copy) { | |
05da5898 | 3277 | err = copy_action(a, sfa, log); |
e6445719 PS |
3278 | if (err) |
3279 | return err; | |
3280 | } | |
3281 | } | |
3282 | ||
3283 | if (rem > 0) | |
3284 | return -EINVAL; | |
3285 | ||
3286 | return 0; | |
3287 | } | |
3288 | ||
83d2b9ba | 3289 | /* 'key' must be the masked key. */ |
7f8a436e | 3290 | int ovs_nla_copy_actions(struct net *net, const struct nlattr *attr, |
25cd9ba0 | 3291 | const struct sw_flow_key *key, |
05da5898 | 3292 | struct sw_flow_actions **sfa, bool log) |
25cd9ba0 | 3293 | { |
2fdb957d | 3294 | int err; |
fbdcdd78 | 3295 | u32 mpls_label_count = 0; |
2fdb957d | 3296 | |
67c8d22a | 3297 | *sfa = nla_alloc_flow_actions(min(nla_len(attr), MAX_ACTIONS_BUFSIZE)); |
2fdb957d PS |
3298 | if (IS_ERR(*sfa)) |
3299 | return PTR_ERR(*sfa); | |
3300 | ||
fbdcdd78 MV |
3301 | if (eth_p_mpls(key->eth.type)) |
3302 | mpls_label_count = hweight_long(key->mpls.num_labels_mask); | |
3303 | ||
8e2fed1c | 3304 | (*sfa)->orig_len = nla_len(attr); |
798c1661 | 3305 | err = __ovs_nla_copy_actions(net, attr, key, sfa, key->eth.type, |
fbdcdd78 | 3306 | key->eth.vlan.tci, mpls_label_count, log); |
2fdb957d | 3307 | if (err) |
34ae932a | 3308 | ovs_nla_free_flow_actions(*sfa); |
2fdb957d PS |
3309 | |
3310 | return err; | |
25cd9ba0 SH |
3311 | } |
3312 | ||
798c1661 | 3313 | static int sample_action_to_attr(const struct nlattr *attr, |
3314 | struct sk_buff *skb) | |
e6445719 | 3315 | { |
798c1661 | 3316 | struct nlattr *start, *ac_start = NULL, *sample_arg; |
3317 | int err = 0, rem = nla_len(attr); | |
3318 | const struct sample_arg *arg; | |
3319 | struct nlattr *actions; | |
e6445719 | 3320 | |
ae0be8de | 3321 | start = nla_nest_start_noflag(skb, OVS_ACTION_ATTR_SAMPLE); |
e6445719 PS |
3322 | if (!start) |
3323 | return -EMSGSIZE; | |
3324 | ||
798c1661 | 3325 | sample_arg = nla_data(attr); |
3326 | arg = nla_data(sample_arg); | |
3327 | actions = nla_next(sample_arg, &rem); | |
e6445719 | 3328 | |
798c1661 | 3329 | if (nla_put_u32(skb, OVS_SAMPLE_ATTR_PROBABILITY, arg->probability)) { |
3330 | err = -EMSGSIZE; | |
3331 | goto out; | |
3332 | } | |
3333 | ||
ae0be8de | 3334 | ac_start = nla_nest_start_noflag(skb, OVS_SAMPLE_ATTR_ACTIONS); |
798c1661 | 3335 | if (!ac_start) { |
3336 | err = -EMSGSIZE; | |
3337 | goto out; | |
3338 | } | |
3339 | ||
3340 | err = ovs_nla_put_actions(actions, rem, skb); | |
3341 | ||
3342 | out: | |
3343 | if (err) { | |
3344 | nla_nest_cancel(skb, ac_start); | |
3345 | nla_nest_cancel(skb, start); | |
3346 | } else { | |
3347 | nla_nest_end(skb, ac_start); | |
3348 | nla_nest_end(skb, start); | |
e6445719 PS |
3349 | } |
3350 | ||
e6445719 PS |
3351 | return err; |
3352 | } | |
3353 | ||
b2335040 YS |
3354 | static int clone_action_to_attr(const struct nlattr *attr, |
3355 | struct sk_buff *skb) | |
3356 | { | |
3357 | struct nlattr *start; | |
3358 | int err = 0, rem = nla_len(attr); | |
3359 | ||
ae0be8de | 3360 | start = nla_nest_start_noflag(skb, OVS_ACTION_ATTR_CLONE); |
b2335040 YS |
3361 | if (!start) |
3362 | return -EMSGSIZE; | |
3363 | ||
3364 | err = ovs_nla_put_actions(nla_data(attr), rem, skb); | |
3365 | ||
3366 | if (err) | |
3367 | nla_nest_cancel(skb, start); | |
3368 | else | |
3369 | nla_nest_end(skb, start); | |
3370 | ||
3371 | return err; | |
3372 | } | |
3373 | ||
4d5ec89f NS |
3374 | static int check_pkt_len_action_to_attr(const struct nlattr *attr, |
3375 | struct sk_buff *skb) | |
3376 | { | |
3377 | struct nlattr *start, *ac_start = NULL; | |
3378 | const struct check_pkt_len_arg *arg; | |
3379 | const struct nlattr *a, *cpl_arg; | |
3380 | int err = 0, rem = nla_len(attr); | |
3381 | ||
ae0be8de | 3382 | start = nla_nest_start_noflag(skb, OVS_ACTION_ATTR_CHECK_PKT_LEN); |
4d5ec89f NS |
3383 | if (!start) |
3384 | return -EMSGSIZE; | |
3385 | ||
3386 | /* The first nested attribute in 'attr' is always | |
3387 | * 'OVS_CHECK_PKT_LEN_ATTR_ARG'. | |
3388 | */ | |
3389 | cpl_arg = nla_data(attr); | |
3390 | arg = nla_data(cpl_arg); | |
3391 | ||
3392 | if (nla_put_u16(skb, OVS_CHECK_PKT_LEN_ATTR_PKT_LEN, arg->pkt_len)) { | |
3393 | err = -EMSGSIZE; | |
3394 | goto out; | |
3395 | } | |
3396 | ||
3397 | /* Second nested attribute in 'attr' is always | |
3398 | * 'OVS_CHECK_PKT_LEN_ATTR_ACTIONS_IF_LESS_EQUAL'. | |
3399 | */ | |
3400 | a = nla_next(cpl_arg, &rem); | |
ae0be8de MK |
3401 | ac_start = nla_nest_start_noflag(skb, |
3402 | OVS_CHECK_PKT_LEN_ATTR_ACTIONS_IF_LESS_EQUAL); | |
4d5ec89f NS |
3403 | if (!ac_start) { |
3404 | err = -EMSGSIZE; | |
3405 | goto out; | |
3406 | } | |
3407 | ||
3408 | err = ovs_nla_put_actions(nla_data(a), nla_len(a), skb); | |
3409 | if (err) { | |
3410 | nla_nest_cancel(skb, ac_start); | |
3411 | goto out; | |
3412 | } else { | |
3413 | nla_nest_end(skb, ac_start); | |
3414 | } | |
3415 | ||
3416 | /* Third nested attribute in 'attr' is always | |
3417 | * OVS_CHECK_PKT_LEN_ATTR_ACTIONS_IF_GREATER. | |
3418 | */ | |
3419 | a = nla_next(a, &rem); | |
ae0be8de MK |
3420 | ac_start = nla_nest_start_noflag(skb, |
3421 | OVS_CHECK_PKT_LEN_ATTR_ACTIONS_IF_GREATER); | |
4d5ec89f NS |
3422 | if (!ac_start) { |
3423 | err = -EMSGSIZE; | |
3424 | goto out; | |
3425 | } | |
3426 | ||
3427 | err = ovs_nla_put_actions(nla_data(a), nla_len(a), skb); | |
3428 | if (err) { | |
3429 | nla_nest_cancel(skb, ac_start); | |
3430 | goto out; | |
3431 | } else { | |
3432 | nla_nest_end(skb, ac_start); | |
3433 | } | |
3434 | ||
3435 | nla_nest_end(skb, start); | |
3436 | return 0; | |
3437 | ||
3438 | out: | |
3439 | nla_nest_cancel(skb, start); | |
3440 | return err; | |
3441 | } | |
3442 | ||
e6445719 PS |
3443 | static int set_action_to_attr(const struct nlattr *a, struct sk_buff *skb) |
3444 | { | |
3445 | const struct nlattr *ovs_key = nla_data(a); | |
3446 | int key_type = nla_type(ovs_key); | |
3447 | struct nlattr *start; | |
3448 | int err; | |
3449 | ||
3450 | switch (key_type) { | |
f0b128c1 | 3451 | case OVS_KEY_ATTR_TUNNEL_INFO: { |
34ae932a TG |
3452 | struct ovs_tunnel_info *ovs_tun = nla_data(ovs_key); |
3453 | struct ip_tunnel_info *tun_info = &ovs_tun->tun_dst->u.tun_info; | |
f0b128c1 | 3454 | |
ae0be8de | 3455 | start = nla_nest_start_noflag(skb, OVS_ACTION_ATTR_SET); |
e6445719 PS |
3456 | if (!start) |
3457 | return -EMSGSIZE; | |
3458 | ||
e905eabc SH |
3459 | err = ip_tun_to_nlattr(skb, &tun_info->key, |
3460 | ip_tunnel_info_opts(tun_info), | |
3461 | tun_info->options_len, | |
18b6f717 | 3462 | ip_tunnel_info_af(tun_info), tun_info->mode); |
e6445719 PS |
3463 | if (err) |
3464 | return err; | |
3465 | nla_nest_end(skb, start); | |
3466 | break; | |
f0b128c1 | 3467 | } |
e6445719 PS |
3468 | default: |
3469 | if (nla_put(skb, OVS_ACTION_ATTR_SET, nla_len(a), ovs_key)) | |
3470 | return -EMSGSIZE; | |
3471 | break; | |
3472 | } | |
3473 | ||
3474 | return 0; | |
3475 | } | |
3476 | ||
83d2b9ba JR |
3477 | static int masked_set_action_to_set_action_attr(const struct nlattr *a, |
3478 | struct sk_buff *skb) | |
3479 | { | |
3480 | const struct nlattr *ovs_key = nla_data(a); | |
f4f8e738 | 3481 | struct nlattr *nla; |
83d2b9ba JR |
3482 | size_t key_len = nla_len(ovs_key) / 2; |
3483 | ||
3484 | /* Revert the conversion we did from a non-masked set action to | |
3485 | * masked set action. | |
3486 | */ | |
ae0be8de | 3487 | nla = nla_nest_start_noflag(skb, OVS_ACTION_ATTR_SET); |
f4f8e738 | 3488 | if (!nla) |
83d2b9ba JR |
3489 | return -EMSGSIZE; |
3490 | ||
f4f8e738 JS |
3491 | if (nla_put(skb, nla_type(ovs_key), key_len, nla_data(ovs_key))) |
3492 | return -EMSGSIZE; | |
3493 | ||
3494 | nla_nest_end(skb, nla); | |
83d2b9ba JR |
3495 | return 0; |
3496 | } | |
3497 | ||
e6445719 PS |
3498 | int ovs_nla_put_actions(const struct nlattr *attr, int len, struct sk_buff *skb) |
3499 | { | |
3500 | const struct nlattr *a; | |
3501 | int rem, err; | |
3502 | ||
3503 | nla_for_each_attr(a, attr, len, rem) { | |
3504 | int type = nla_type(a); | |
3505 | ||
3506 | switch (type) { | |
3507 | case OVS_ACTION_ATTR_SET: | |
3508 | err = set_action_to_attr(a, skb); | |
3509 | if (err) | |
3510 | return err; | |
3511 | break; | |
3512 | ||
83d2b9ba JR |
3513 | case OVS_ACTION_ATTR_SET_TO_MASKED: |
3514 | err = masked_set_action_to_set_action_attr(a, skb); | |
3515 | if (err) | |
3516 | return err; | |
3517 | break; | |
3518 | ||
e6445719 PS |
3519 | case OVS_ACTION_ATTR_SAMPLE: |
3520 | err = sample_action_to_attr(a, skb); | |
3521 | if (err) | |
3522 | return err; | |
3523 | break; | |
7f8a436e JS |
3524 | |
3525 | case OVS_ACTION_ATTR_CT: | |
3526 | err = ovs_ct_action_to_attr(nla_data(a), skb); | |
3527 | if (err) | |
3528 | return err; | |
3529 | break; | |
3530 | ||
b2335040 YS |
3531 | case OVS_ACTION_ATTR_CLONE: |
3532 | err = clone_action_to_attr(a, skb); | |
3533 | if (err) | |
3534 | return err; | |
3535 | break; | |
3536 | ||
4d5ec89f NS |
3537 | case OVS_ACTION_ATTR_CHECK_PKT_LEN: |
3538 | err = check_pkt_len_action_to_attr(a, skb); | |
3539 | if (err) | |
3540 | return err; | |
3541 | break; | |
3542 | ||
e6445719 PS |
3543 | default: |
3544 | if (nla_put(skb, type, nla_len(a), nla_data(a))) | |
3545 | return -EMSGSIZE; | |
3546 | break; | |
3547 | } | |
3548 | } | |
3549 | ||
3550 | return 0; | |
3551 | } |