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e6445719 | 1 | /* |
798c1661 | 2 | * Copyright (c) 2007-2017 Nicira, Inc. |
e6445719 PS |
3 | * |
4 | * This program is free software; you can redistribute it and/or | |
5 | * modify it under the terms of version 2 of the GNU General Public | |
6 | * License as published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, but | |
9 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
11 | * General Public License for more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License | |
14 | * along with this program; if not, write to the Free Software | |
15 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA | |
16 | * 02110-1301, USA | |
17 | */ | |
18 | ||
2235ad1c JP |
19 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
20 | ||
e6445719 PS |
21 | #include "flow.h" |
22 | #include "datapath.h" | |
23 | #include <linux/uaccess.h> | |
24 | #include <linux/netdevice.h> | |
25 | #include <linux/etherdevice.h> | |
26 | #include <linux/if_ether.h> | |
27 | #include <linux/if_vlan.h> | |
28 | #include <net/llc_pdu.h> | |
29 | #include <linux/kernel.h> | |
30 | #include <linux/jhash.h> | |
31 | #include <linux/jiffies.h> | |
32 | #include <linux/llc.h> | |
33 | #include <linux/module.h> | |
34 | #include <linux/in.h> | |
35 | #include <linux/rcupdate.h> | |
36 | #include <linux/if_arp.h> | |
37 | #include <linux/ip.h> | |
38 | #include <linux/ipv6.h> | |
39 | #include <linux/sctp.h> | |
40 | #include <linux/tcp.h> | |
41 | #include <linux/udp.h> | |
42 | #include <linux/icmp.h> | |
43 | #include <linux/icmpv6.h> | |
44 | #include <linux/rculist.h> | |
f5796684 | 45 | #include <net/geneve.h> |
e6445719 PS |
46 | #include <net/ip.h> |
47 | #include <net/ipv6.h> | |
48 | #include <net/ndisc.h> | |
25cd9ba0 | 49 | #include <net/mpls.h> |
614732ea | 50 | #include <net/vxlan.h> |
e6445719 PS |
51 | |
52 | #include "flow_netlink.h" | |
53 | ||
81bfe3c3 TG |
54 | struct ovs_len_tbl { |
55 | int len; | |
56 | const struct ovs_len_tbl *next; | |
57 | }; | |
58 | ||
59 | #define OVS_ATTR_NESTED -1 | |
982b5270 | 60 | #define OVS_ATTR_VARIABLE -2 |
81bfe3c3 | 61 | |
798c1661 | 62 | static bool actions_may_change_flow(const struct nlattr *actions) |
63 | { | |
64 | struct nlattr *nla; | |
65 | int rem; | |
66 | ||
67 | nla_for_each_nested(nla, actions, rem) { | |
68 | u16 action = nla_type(nla); | |
69 | ||
70 | switch (action) { | |
71 | case OVS_ACTION_ATTR_OUTPUT: | |
72 | case OVS_ACTION_ATTR_RECIRC: | |
73 | case OVS_ACTION_ATTR_TRUNC: | |
74 | case OVS_ACTION_ATTR_USERSPACE: | |
75 | break; | |
76 | ||
77 | case OVS_ACTION_ATTR_CT: | |
78 | case OVS_ACTION_ATTR_HASH: | |
79 | case OVS_ACTION_ATTR_POP_ETH: | |
80 | case OVS_ACTION_ATTR_POP_MPLS: | |
81 | case OVS_ACTION_ATTR_POP_VLAN: | |
82 | case OVS_ACTION_ATTR_PUSH_ETH: | |
83 | case OVS_ACTION_ATTR_PUSH_MPLS: | |
84 | case OVS_ACTION_ATTR_PUSH_VLAN: | |
85 | case OVS_ACTION_ATTR_SAMPLE: | |
86 | case OVS_ACTION_ATTR_SET: | |
87 | case OVS_ACTION_ATTR_SET_MASKED: | |
88 | default: | |
89 | return true; | |
90 | } | |
91 | } | |
92 | return false; | |
93 | } | |
94 | ||
a85311bf PS |
95 | static void update_range(struct sw_flow_match *match, |
96 | size_t offset, size_t size, bool is_mask) | |
e6445719 | 97 | { |
a85311bf | 98 | struct sw_flow_key_range *range; |
e6445719 PS |
99 | size_t start = rounddown(offset, sizeof(long)); |
100 | size_t end = roundup(offset + size, sizeof(long)); | |
101 | ||
102 | if (!is_mask) | |
103 | range = &match->range; | |
a85311bf | 104 | else |
e6445719 PS |
105 | range = &match->mask->range; |
106 | ||
e6445719 PS |
107 | if (range->start == range->end) { |
108 | range->start = start; | |
109 | range->end = end; | |
110 | return; | |
111 | } | |
112 | ||
113 | if (range->start > start) | |
114 | range->start = start; | |
115 | ||
116 | if (range->end < end) | |
117 | range->end = end; | |
118 | } | |
119 | ||
120 | #define SW_FLOW_KEY_PUT(match, field, value, is_mask) \ | |
121 | do { \ | |
a85311bf PS |
122 | update_range(match, offsetof(struct sw_flow_key, field), \ |
123 | sizeof((match)->key->field), is_mask); \ | |
124 | if (is_mask) \ | |
125 | (match)->mask->key.field = value; \ | |
126 | else \ | |
e6445719 | 127 | (match)->key->field = value; \ |
e6445719 PS |
128 | } while (0) |
129 | ||
f5796684 JG |
130 | #define SW_FLOW_KEY_MEMCPY_OFFSET(match, offset, value_p, len, is_mask) \ |
131 | do { \ | |
a85311bf | 132 | update_range(match, offset, len, is_mask); \ |
f5796684 JG |
133 | if (is_mask) \ |
134 | memcpy((u8 *)&(match)->mask->key + offset, value_p, \ | |
a85311bf | 135 | len); \ |
f5796684 JG |
136 | else \ |
137 | memcpy((u8 *)(match)->key + offset, value_p, len); \ | |
e6445719 PS |
138 | } while (0) |
139 | ||
f5796684 JG |
140 | #define SW_FLOW_KEY_MEMCPY(match, field, value_p, len, is_mask) \ |
141 | SW_FLOW_KEY_MEMCPY_OFFSET(match, offsetof(struct sw_flow_key, field), \ | |
142 | value_p, len, is_mask) | |
143 | ||
a85311bf PS |
144 | #define SW_FLOW_KEY_MEMSET_FIELD(match, field, value, is_mask) \ |
145 | do { \ | |
146 | update_range(match, offsetof(struct sw_flow_key, field), \ | |
147 | sizeof((match)->key->field), is_mask); \ | |
148 | if (is_mask) \ | |
149 | memset((u8 *)&(match)->mask->key.field, value, \ | |
150 | sizeof((match)->mask->key.field)); \ | |
151 | else \ | |
f47de068 PS |
152 | memset((u8 *)&(match)->key->field, value, \ |
153 | sizeof((match)->key->field)); \ | |
f47de068 | 154 | } while (0) |
e6445719 PS |
155 | |
156 | static bool match_validate(const struct sw_flow_match *match, | |
05da5898 | 157 | u64 key_attrs, u64 mask_attrs, bool log) |
e6445719 | 158 | { |
0a6410fb | 159 | u64 key_expected = 0; |
e6445719 PS |
160 | u64 mask_allowed = key_attrs; /* At most allow all key attributes */ |
161 | ||
162 | /* The following mask attributes allowed only if they | |
163 | * pass the validation tests. */ | |
164 | mask_allowed &= ~((1 << OVS_KEY_ATTR_IPV4) | |
9dd7f890 | 165 | | (1 << OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV4) |
e6445719 | 166 | | (1 << OVS_KEY_ATTR_IPV6) |
9dd7f890 | 167 | | (1 << OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV6) |
e6445719 | 168 | | (1 << OVS_KEY_ATTR_TCP) |
5eb26b15 | 169 | | (1 << OVS_KEY_ATTR_TCP_FLAGS) |
e6445719 PS |
170 | | (1 << OVS_KEY_ATTR_UDP) |
171 | | (1 << OVS_KEY_ATTR_SCTP) | |
172 | | (1 << OVS_KEY_ATTR_ICMP) | |
173 | | (1 << OVS_KEY_ATTR_ICMPV6) | |
174 | | (1 << OVS_KEY_ATTR_ARP) | |
25cd9ba0 SH |
175 | | (1 << OVS_KEY_ATTR_ND) |
176 | | (1 << OVS_KEY_ATTR_MPLS)); | |
e6445719 PS |
177 | |
178 | /* Always allowed mask fields. */ | |
179 | mask_allowed |= ((1 << OVS_KEY_ATTR_TUNNEL) | |
180 | | (1 << OVS_KEY_ATTR_IN_PORT) | |
181 | | (1 << OVS_KEY_ATTR_ETHERTYPE)); | |
182 | ||
183 | /* Check key attributes. */ | |
184 | if (match->key->eth.type == htons(ETH_P_ARP) | |
185 | || match->key->eth.type == htons(ETH_P_RARP)) { | |
186 | key_expected |= 1 << OVS_KEY_ATTR_ARP; | |
f2a01517 | 187 | if (match->mask && (match->mask->key.eth.type == htons(0xffff))) |
e6445719 PS |
188 | mask_allowed |= 1 << OVS_KEY_ATTR_ARP; |
189 | } | |
190 | ||
25cd9ba0 SH |
191 | if (eth_p_mpls(match->key->eth.type)) { |
192 | key_expected |= 1 << OVS_KEY_ATTR_MPLS; | |
193 | if (match->mask && (match->mask->key.eth.type == htons(0xffff))) | |
194 | mask_allowed |= 1 << OVS_KEY_ATTR_MPLS; | |
195 | } | |
196 | ||
e6445719 PS |
197 | if (match->key->eth.type == htons(ETH_P_IP)) { |
198 | key_expected |= 1 << OVS_KEY_ATTR_IPV4; | |
9dd7f890 | 199 | if (match->mask && match->mask->key.eth.type == htons(0xffff)) { |
e6445719 | 200 | mask_allowed |= 1 << OVS_KEY_ATTR_IPV4; |
9dd7f890 JR |
201 | mask_allowed |= 1 << OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV4; |
202 | } | |
e6445719 PS |
203 | |
204 | if (match->key->ip.frag != OVS_FRAG_TYPE_LATER) { | |
205 | if (match->key->ip.proto == IPPROTO_UDP) { | |
206 | key_expected |= 1 << OVS_KEY_ATTR_UDP; | |
207 | if (match->mask && (match->mask->key.ip.proto == 0xff)) | |
208 | mask_allowed |= 1 << OVS_KEY_ATTR_UDP; | |
209 | } | |
210 | ||
211 | if (match->key->ip.proto == IPPROTO_SCTP) { | |
212 | key_expected |= 1 << OVS_KEY_ATTR_SCTP; | |
213 | if (match->mask && (match->mask->key.ip.proto == 0xff)) | |
214 | mask_allowed |= 1 << OVS_KEY_ATTR_SCTP; | |
215 | } | |
216 | ||
217 | if (match->key->ip.proto == IPPROTO_TCP) { | |
218 | key_expected |= 1 << OVS_KEY_ATTR_TCP; | |
5eb26b15 JR |
219 | key_expected |= 1 << OVS_KEY_ATTR_TCP_FLAGS; |
220 | if (match->mask && (match->mask->key.ip.proto == 0xff)) { | |
e6445719 | 221 | mask_allowed |= 1 << OVS_KEY_ATTR_TCP; |
5eb26b15 JR |
222 | mask_allowed |= 1 << OVS_KEY_ATTR_TCP_FLAGS; |
223 | } | |
e6445719 PS |
224 | } |
225 | ||
226 | if (match->key->ip.proto == IPPROTO_ICMP) { | |
227 | key_expected |= 1 << OVS_KEY_ATTR_ICMP; | |
228 | if (match->mask && (match->mask->key.ip.proto == 0xff)) | |
229 | mask_allowed |= 1 << OVS_KEY_ATTR_ICMP; | |
230 | } | |
231 | } | |
232 | } | |
233 | ||
234 | if (match->key->eth.type == htons(ETH_P_IPV6)) { | |
235 | key_expected |= 1 << OVS_KEY_ATTR_IPV6; | |
9dd7f890 | 236 | if (match->mask && match->mask->key.eth.type == htons(0xffff)) { |
e6445719 | 237 | mask_allowed |= 1 << OVS_KEY_ATTR_IPV6; |
9dd7f890 JR |
238 | mask_allowed |= 1 << OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV6; |
239 | } | |
e6445719 PS |
240 | |
241 | if (match->key->ip.frag != OVS_FRAG_TYPE_LATER) { | |
242 | if (match->key->ip.proto == IPPROTO_UDP) { | |
243 | key_expected |= 1 << OVS_KEY_ATTR_UDP; | |
244 | if (match->mask && (match->mask->key.ip.proto == 0xff)) | |
245 | mask_allowed |= 1 << OVS_KEY_ATTR_UDP; | |
246 | } | |
247 | ||
248 | if (match->key->ip.proto == IPPROTO_SCTP) { | |
249 | key_expected |= 1 << OVS_KEY_ATTR_SCTP; | |
250 | if (match->mask && (match->mask->key.ip.proto == 0xff)) | |
251 | mask_allowed |= 1 << OVS_KEY_ATTR_SCTP; | |
252 | } | |
253 | ||
254 | if (match->key->ip.proto == IPPROTO_TCP) { | |
255 | key_expected |= 1 << OVS_KEY_ATTR_TCP; | |
5eb26b15 JR |
256 | key_expected |= 1 << OVS_KEY_ATTR_TCP_FLAGS; |
257 | if (match->mask && (match->mask->key.ip.proto == 0xff)) { | |
e6445719 | 258 | mask_allowed |= 1 << OVS_KEY_ATTR_TCP; |
5eb26b15 JR |
259 | mask_allowed |= 1 << OVS_KEY_ATTR_TCP_FLAGS; |
260 | } | |
e6445719 PS |
261 | } |
262 | ||
263 | if (match->key->ip.proto == IPPROTO_ICMPV6) { | |
264 | key_expected |= 1 << OVS_KEY_ATTR_ICMPV6; | |
265 | if (match->mask && (match->mask->key.ip.proto == 0xff)) | |
266 | mask_allowed |= 1 << OVS_KEY_ATTR_ICMPV6; | |
267 | ||
1139e241 | 268 | if (match->key->tp.src == |
e6445719 | 269 | htons(NDISC_NEIGHBOUR_SOLICITATION) || |
1139e241 | 270 | match->key->tp.src == htons(NDISC_NEIGHBOUR_ADVERTISEMENT)) { |
e6445719 | 271 | key_expected |= 1 << OVS_KEY_ATTR_ND; |
9dd7f890 JR |
272 | /* Original direction conntrack tuple |
273 | * uses the same space as the ND fields | |
274 | * in the key, so both are not allowed | |
275 | * at the same time. | |
276 | */ | |
277 | mask_allowed &= ~(1ULL << OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV6); | |
f2a01517 | 278 | if (match->mask && (match->mask->key.tp.src == htons(0xff))) |
e6445719 PS |
279 | mask_allowed |= 1 << OVS_KEY_ATTR_ND; |
280 | } | |
281 | } | |
282 | } | |
283 | } | |
284 | ||
285 | if ((key_attrs & key_expected) != key_expected) { | |
286 | /* Key attributes check failed. */ | |
05da5898 JR |
287 | OVS_NLERR(log, "Missing key (keys=%llx, expected=%llx)", |
288 | (unsigned long long)key_attrs, | |
289 | (unsigned long long)key_expected); | |
e6445719 PS |
290 | return false; |
291 | } | |
292 | ||
293 | if ((mask_attrs & mask_allowed) != mask_attrs) { | |
294 | /* Mask attributes check failed. */ | |
05da5898 JR |
295 | OVS_NLERR(log, "Unexpected mask (mask=%llx, allowed=%llx)", |
296 | (unsigned long long)mask_attrs, | |
297 | (unsigned long long)mask_allowed); | |
e6445719 PS |
298 | return false; |
299 | } | |
300 | ||
301 | return true; | |
302 | } | |
303 | ||
8f0aad6f WZ |
304 | size_t ovs_tun_key_attr_size(void) |
305 | { | |
306 | /* Whenever adding new OVS_TUNNEL_KEY_ FIELDS, we should consider | |
307 | * updating this function. | |
308 | */ | |
b46f6ded | 309 | return nla_total_size_64bit(8) /* OVS_TUNNEL_KEY_ATTR_ID */ |
6b26ba3a JB |
310 | + nla_total_size(16) /* OVS_TUNNEL_KEY_ATTR_IPV[46]_SRC */ |
311 | + nla_total_size(16) /* OVS_TUNNEL_KEY_ATTR_IPV[46]_DST */ | |
8f0aad6f WZ |
312 | + nla_total_size(1) /* OVS_TUNNEL_KEY_ATTR_TOS */ |
313 | + nla_total_size(1) /* OVS_TUNNEL_KEY_ATTR_TTL */ | |
314 | + nla_total_size(0) /* OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT */ | |
315 | + nla_total_size(0) /* OVS_TUNNEL_KEY_ATTR_CSUM */ | |
316 | + nla_total_size(0) /* OVS_TUNNEL_KEY_ATTR_OAM */ | |
317 | + nla_total_size(256) /* OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS */ | |
1dd144cf TG |
318 | /* OVS_TUNNEL_KEY_ATTR_VXLAN_OPTS is mutually exclusive with |
319 | * OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS and covered by it. | |
320 | */ | |
8f0aad6f WZ |
321 | + nla_total_size(2) /* OVS_TUNNEL_KEY_ATTR_TP_SRC */ |
322 | + nla_total_size(2); /* OVS_TUNNEL_KEY_ATTR_TP_DST */ | |
323 | } | |
324 | ||
41af73e9 JS |
325 | size_t ovs_key_attr_size(void) |
326 | { | |
327 | /* Whenever adding new OVS_KEY_ FIELDS, we should consider | |
328 | * updating this function. | |
329 | */ | |
9dd7f890 | 330 | BUILD_BUG_ON(OVS_KEY_ATTR_TUNNEL_INFO != 28); |
41af73e9 JS |
331 | |
332 | return nla_total_size(4) /* OVS_KEY_ATTR_PRIORITY */ | |
333 | + nla_total_size(0) /* OVS_KEY_ATTR_TUNNEL */ | |
8f0aad6f | 334 | + ovs_tun_key_attr_size() |
41af73e9 JS |
335 | + nla_total_size(4) /* OVS_KEY_ATTR_IN_PORT */ |
336 | + nla_total_size(4) /* OVS_KEY_ATTR_SKB_MARK */ | |
337 | + nla_total_size(4) /* OVS_KEY_ATTR_DP_HASH */ | |
338 | + nla_total_size(4) /* OVS_KEY_ATTR_RECIRC_ID */ | |
fbccce59 | 339 | + nla_total_size(4) /* OVS_KEY_ATTR_CT_STATE */ |
7f8a436e | 340 | + nla_total_size(2) /* OVS_KEY_ATTR_CT_ZONE */ |
182e3042 | 341 | + nla_total_size(4) /* OVS_KEY_ATTR_CT_MARK */ |
33db4125 | 342 | + nla_total_size(16) /* OVS_KEY_ATTR_CT_LABELS */ |
9dd7f890 | 343 | + nla_total_size(40) /* OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV6 */ |
41af73e9 JS |
344 | + nla_total_size(12) /* OVS_KEY_ATTR_ETHERNET */ |
345 | + nla_total_size(2) /* OVS_KEY_ATTR_ETHERTYPE */ | |
346 | + nla_total_size(4) /* OVS_KEY_ATTR_VLAN */ | |
347 | + nla_total_size(0) /* OVS_KEY_ATTR_ENCAP */ | |
348 | + nla_total_size(2) /* OVS_KEY_ATTR_ETHERTYPE */ | |
349 | + nla_total_size(40) /* OVS_KEY_ATTR_IPV6 */ | |
350 | + nla_total_size(2) /* OVS_KEY_ATTR_ICMPV6 */ | |
351 | + nla_total_size(28); /* OVS_KEY_ATTR_ND */ | |
352 | } | |
353 | ||
982b5270 JG |
354 | static const struct ovs_len_tbl ovs_vxlan_ext_key_lens[OVS_VXLAN_EXT_MAX + 1] = { |
355 | [OVS_VXLAN_EXT_GBP] = { .len = sizeof(u32) }, | |
356 | }; | |
357 | ||
81bfe3c3 TG |
358 | static const struct ovs_len_tbl ovs_tunnel_key_lens[OVS_TUNNEL_KEY_ATTR_MAX + 1] = { |
359 | [OVS_TUNNEL_KEY_ATTR_ID] = { .len = sizeof(u64) }, | |
360 | [OVS_TUNNEL_KEY_ATTR_IPV4_SRC] = { .len = sizeof(u32) }, | |
361 | [OVS_TUNNEL_KEY_ATTR_IPV4_DST] = { .len = sizeof(u32) }, | |
362 | [OVS_TUNNEL_KEY_ATTR_TOS] = { .len = 1 }, | |
363 | [OVS_TUNNEL_KEY_ATTR_TTL] = { .len = 1 }, | |
364 | [OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT] = { .len = 0 }, | |
365 | [OVS_TUNNEL_KEY_ATTR_CSUM] = { .len = 0 }, | |
366 | [OVS_TUNNEL_KEY_ATTR_TP_SRC] = { .len = sizeof(u16) }, | |
367 | [OVS_TUNNEL_KEY_ATTR_TP_DST] = { .len = sizeof(u16) }, | |
368 | [OVS_TUNNEL_KEY_ATTR_OAM] = { .len = 0 }, | |
982b5270 JG |
369 | [OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS] = { .len = OVS_ATTR_VARIABLE }, |
370 | [OVS_TUNNEL_KEY_ATTR_VXLAN_OPTS] = { .len = OVS_ATTR_NESTED, | |
371 | .next = ovs_vxlan_ext_key_lens }, | |
6b26ba3a JB |
372 | [OVS_TUNNEL_KEY_ATTR_IPV6_SRC] = { .len = sizeof(struct in6_addr) }, |
373 | [OVS_TUNNEL_KEY_ATTR_IPV6_DST] = { .len = sizeof(struct in6_addr) }, | |
81bfe3c3 TG |
374 | }; |
375 | ||
e6445719 | 376 | /* The size of the argument for each %OVS_KEY_ATTR_* Netlink attribute. */ |
81bfe3c3 TG |
377 | static const struct ovs_len_tbl ovs_key_lens[OVS_KEY_ATTR_MAX + 1] = { |
378 | [OVS_KEY_ATTR_ENCAP] = { .len = OVS_ATTR_NESTED }, | |
379 | [OVS_KEY_ATTR_PRIORITY] = { .len = sizeof(u32) }, | |
380 | [OVS_KEY_ATTR_IN_PORT] = { .len = sizeof(u32) }, | |
381 | [OVS_KEY_ATTR_SKB_MARK] = { .len = sizeof(u32) }, | |
382 | [OVS_KEY_ATTR_ETHERNET] = { .len = sizeof(struct ovs_key_ethernet) }, | |
383 | [OVS_KEY_ATTR_VLAN] = { .len = sizeof(__be16) }, | |
384 | [OVS_KEY_ATTR_ETHERTYPE] = { .len = sizeof(__be16) }, | |
385 | [OVS_KEY_ATTR_IPV4] = { .len = sizeof(struct ovs_key_ipv4) }, | |
386 | [OVS_KEY_ATTR_IPV6] = { .len = sizeof(struct ovs_key_ipv6) }, | |
387 | [OVS_KEY_ATTR_TCP] = { .len = sizeof(struct ovs_key_tcp) }, | |
388 | [OVS_KEY_ATTR_TCP_FLAGS] = { .len = sizeof(__be16) }, | |
389 | [OVS_KEY_ATTR_UDP] = { .len = sizeof(struct ovs_key_udp) }, | |
390 | [OVS_KEY_ATTR_SCTP] = { .len = sizeof(struct ovs_key_sctp) }, | |
391 | [OVS_KEY_ATTR_ICMP] = { .len = sizeof(struct ovs_key_icmp) }, | |
392 | [OVS_KEY_ATTR_ICMPV6] = { .len = sizeof(struct ovs_key_icmpv6) }, | |
393 | [OVS_KEY_ATTR_ARP] = { .len = sizeof(struct ovs_key_arp) }, | |
394 | [OVS_KEY_ATTR_ND] = { .len = sizeof(struct ovs_key_nd) }, | |
395 | [OVS_KEY_ATTR_RECIRC_ID] = { .len = sizeof(u32) }, | |
396 | [OVS_KEY_ATTR_DP_HASH] = { .len = sizeof(u32) }, | |
397 | [OVS_KEY_ATTR_TUNNEL] = { .len = OVS_ATTR_NESTED, | |
398 | .next = ovs_tunnel_key_lens, }, | |
399 | [OVS_KEY_ATTR_MPLS] = { .len = sizeof(struct ovs_key_mpls) }, | |
fbccce59 | 400 | [OVS_KEY_ATTR_CT_STATE] = { .len = sizeof(u32) }, |
7f8a436e | 401 | [OVS_KEY_ATTR_CT_ZONE] = { .len = sizeof(u16) }, |
182e3042 | 402 | [OVS_KEY_ATTR_CT_MARK] = { .len = sizeof(u32) }, |
33db4125 | 403 | [OVS_KEY_ATTR_CT_LABELS] = { .len = sizeof(struct ovs_key_ct_labels) }, |
9dd7f890 JR |
404 | [OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV4] = { |
405 | .len = sizeof(struct ovs_key_ct_tuple_ipv4) }, | |
406 | [OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV6] = { | |
407 | .len = sizeof(struct ovs_key_ct_tuple_ipv6) }, | |
e6445719 PS |
408 | }; |
409 | ||
982b5270 JG |
410 | static bool check_attr_len(unsigned int attr_len, unsigned int expected_len) |
411 | { | |
412 | return expected_len == attr_len || | |
413 | expected_len == OVS_ATTR_NESTED || | |
414 | expected_len == OVS_ATTR_VARIABLE; | |
415 | } | |
416 | ||
e6445719 PS |
417 | static bool is_all_zero(const u8 *fp, size_t size) |
418 | { | |
419 | int i; | |
420 | ||
421 | if (!fp) | |
422 | return false; | |
423 | ||
424 | for (i = 0; i < size; i++) | |
425 | if (fp[i]) | |
426 | return false; | |
427 | ||
428 | return true; | |
429 | } | |
430 | ||
431 | static int __parse_flow_nlattrs(const struct nlattr *attr, | |
432 | const struct nlattr *a[], | |
05da5898 | 433 | u64 *attrsp, bool log, bool nz) |
e6445719 PS |
434 | { |
435 | const struct nlattr *nla; | |
436 | u64 attrs; | |
437 | int rem; | |
438 | ||
439 | attrs = *attrsp; | |
440 | nla_for_each_nested(nla, attr, rem) { | |
441 | u16 type = nla_type(nla); | |
442 | int expected_len; | |
443 | ||
444 | if (type > OVS_KEY_ATTR_MAX) { | |
05da5898 | 445 | OVS_NLERR(log, "Key type %d is out of range max %d", |
e6445719 PS |
446 | type, OVS_KEY_ATTR_MAX); |
447 | return -EINVAL; | |
448 | } | |
449 | ||
450 | if (attrs & (1 << type)) { | |
05da5898 | 451 | OVS_NLERR(log, "Duplicate key (type %d).", type); |
e6445719 PS |
452 | return -EINVAL; |
453 | } | |
454 | ||
81bfe3c3 | 455 | expected_len = ovs_key_lens[type].len; |
982b5270 | 456 | if (!check_attr_len(nla_len(nla), expected_len)) { |
05da5898 JR |
457 | OVS_NLERR(log, "Key %d has unexpected len %d expected %d", |
458 | type, nla_len(nla), expected_len); | |
e6445719 PS |
459 | return -EINVAL; |
460 | } | |
461 | ||
462 | if (!nz || !is_all_zero(nla_data(nla), expected_len)) { | |
463 | attrs |= 1 << type; | |
464 | a[type] = nla; | |
465 | } | |
466 | } | |
467 | if (rem) { | |
05da5898 | 468 | OVS_NLERR(log, "Message has %d unknown bytes.", rem); |
e6445719 PS |
469 | return -EINVAL; |
470 | } | |
471 | ||
472 | *attrsp = attrs; | |
473 | return 0; | |
474 | } | |
475 | ||
476 | static int parse_flow_mask_nlattrs(const struct nlattr *attr, | |
05da5898 JR |
477 | const struct nlattr *a[], u64 *attrsp, |
478 | bool log) | |
e6445719 | 479 | { |
05da5898 | 480 | return __parse_flow_nlattrs(attr, a, attrsp, log, true); |
e6445719 PS |
481 | } |
482 | ||
9dd7f890 JR |
483 | int parse_flow_nlattrs(const struct nlattr *attr, const struct nlattr *a[], |
484 | u64 *attrsp, bool log) | |
e6445719 | 485 | { |
05da5898 JR |
486 | return __parse_flow_nlattrs(attr, a, attrsp, log, false); |
487 | } | |
488 | ||
489 | static int genev_tun_opt_from_nlattr(const struct nlattr *a, | |
490 | struct sw_flow_match *match, bool is_mask, | |
491 | bool log) | |
492 | { | |
493 | unsigned long opt_key_offset; | |
494 | ||
495 | if (nla_len(a) > sizeof(match->key->tun_opts)) { | |
496 | OVS_NLERR(log, "Geneve option length err (len %d, max %zu).", | |
497 | nla_len(a), sizeof(match->key->tun_opts)); | |
498 | return -EINVAL; | |
499 | } | |
500 | ||
501 | if (nla_len(a) % 4 != 0) { | |
502 | OVS_NLERR(log, "Geneve opt len %d is not a multiple of 4.", | |
503 | nla_len(a)); | |
504 | return -EINVAL; | |
505 | } | |
506 | ||
507 | /* We need to record the length of the options passed | |
508 | * down, otherwise packets with the same format but | |
509 | * additional options will be silently matched. | |
510 | */ | |
511 | if (!is_mask) { | |
512 | SW_FLOW_KEY_PUT(match, tun_opts_len, nla_len(a), | |
513 | false); | |
514 | } else { | |
515 | /* This is somewhat unusual because it looks at | |
516 | * both the key and mask while parsing the | |
517 | * attributes (and by extension assumes the key | |
518 | * is parsed first). Normally, we would verify | |
519 | * that each is the correct length and that the | |
520 | * attributes line up in the validate function. | |
521 | * However, that is difficult because this is | |
522 | * variable length and we won't have the | |
523 | * information later. | |
524 | */ | |
525 | if (match->key->tun_opts_len != nla_len(a)) { | |
526 | OVS_NLERR(log, "Geneve option len %d != mask len %d", | |
527 | match->key->tun_opts_len, nla_len(a)); | |
528 | return -EINVAL; | |
529 | } | |
530 | ||
531 | SW_FLOW_KEY_PUT(match, tun_opts_len, 0xff, true); | |
532 | } | |
533 | ||
d91641d9 | 534 | opt_key_offset = TUN_METADATA_OFFSET(nla_len(a)); |
05da5898 JR |
535 | SW_FLOW_KEY_MEMCPY_OFFSET(match, opt_key_offset, nla_data(a), |
536 | nla_len(a), is_mask); | |
537 | return 0; | |
e6445719 PS |
538 | } |
539 | ||
982b5270 | 540 | static int vxlan_tun_opt_from_nlattr(const struct nlattr *attr, |
1dd144cf TG |
541 | struct sw_flow_match *match, bool is_mask, |
542 | bool log) | |
543 | { | |
982b5270 JG |
544 | struct nlattr *a; |
545 | int rem; | |
1dd144cf | 546 | unsigned long opt_key_offset; |
614732ea | 547 | struct vxlan_metadata opts; |
1dd144cf TG |
548 | |
549 | BUILD_BUG_ON(sizeof(opts) > sizeof(match->key->tun_opts)); | |
550 | ||
1dd144cf | 551 | memset(&opts, 0, sizeof(opts)); |
982b5270 JG |
552 | nla_for_each_nested(a, attr, rem) { |
553 | int type = nla_type(a); | |
1dd144cf | 554 | |
982b5270 JG |
555 | if (type > OVS_VXLAN_EXT_MAX) { |
556 | OVS_NLERR(log, "VXLAN extension %d out of range max %d", | |
557 | type, OVS_VXLAN_EXT_MAX); | |
558 | return -EINVAL; | |
559 | } | |
560 | ||
561 | if (!check_attr_len(nla_len(a), | |
562 | ovs_vxlan_ext_key_lens[type].len)) { | |
563 | OVS_NLERR(log, "VXLAN extension %d has unexpected len %d expected %d", | |
564 | type, nla_len(a), | |
565 | ovs_vxlan_ext_key_lens[type].len); | |
566 | return -EINVAL; | |
567 | } | |
568 | ||
569 | switch (type) { | |
570 | case OVS_VXLAN_EXT_GBP: | |
571 | opts.gbp = nla_get_u32(a); | |
572 | break; | |
573 | default: | |
574 | OVS_NLERR(log, "Unknown VXLAN extension attribute %d", | |
575 | type); | |
576 | return -EINVAL; | |
577 | } | |
578 | } | |
579 | if (rem) { | |
580 | OVS_NLERR(log, "VXLAN extension message has %d unknown bytes.", | |
581 | rem); | |
582 | return -EINVAL; | |
583 | } | |
1dd144cf TG |
584 | |
585 | if (!is_mask) | |
586 | SW_FLOW_KEY_PUT(match, tun_opts_len, sizeof(opts), false); | |
587 | else | |
588 | SW_FLOW_KEY_PUT(match, tun_opts_len, 0xff, true); | |
589 | ||
590 | opt_key_offset = TUN_METADATA_OFFSET(sizeof(opts)); | |
591 | SW_FLOW_KEY_MEMCPY_OFFSET(match, opt_key_offset, &opts, sizeof(opts), | |
592 | is_mask); | |
593 | return 0; | |
594 | } | |
595 | ||
6b26ba3a JB |
596 | static int ip_tun_from_nlattr(const struct nlattr *attr, |
597 | struct sw_flow_match *match, bool is_mask, | |
598 | bool log) | |
e6445719 | 599 | { |
99e28f18 PS |
600 | bool ttl = false, ipv4 = false, ipv6 = false; |
601 | __be16 tun_flags = 0; | |
602 | int opts_type = 0; | |
e6445719 PS |
603 | struct nlattr *a; |
604 | int rem; | |
e6445719 PS |
605 | |
606 | nla_for_each_nested(a, attr, rem) { | |
607 | int type = nla_type(a); | |
05da5898 JR |
608 | int err; |
609 | ||
e6445719 | 610 | if (type > OVS_TUNNEL_KEY_ATTR_MAX) { |
05da5898 JR |
611 | OVS_NLERR(log, "Tunnel attr %d out of range max %d", |
612 | type, OVS_TUNNEL_KEY_ATTR_MAX); | |
e6445719 PS |
613 | return -EINVAL; |
614 | } | |
615 | ||
982b5270 JG |
616 | if (!check_attr_len(nla_len(a), |
617 | ovs_tunnel_key_lens[type].len)) { | |
05da5898 | 618 | OVS_NLERR(log, "Tunnel attr %d has unexpected len %d expected %d", |
81bfe3c3 | 619 | type, nla_len(a), ovs_tunnel_key_lens[type].len); |
e6445719 PS |
620 | return -EINVAL; |
621 | } | |
622 | ||
623 | switch (type) { | |
624 | case OVS_TUNNEL_KEY_ATTR_ID: | |
625 | SW_FLOW_KEY_PUT(match, tun_key.tun_id, | |
626 | nla_get_be64(a), is_mask); | |
627 | tun_flags |= TUNNEL_KEY; | |
628 | break; | |
629 | case OVS_TUNNEL_KEY_ATTR_IPV4_SRC: | |
c1ea5d67 | 630 | SW_FLOW_KEY_PUT(match, tun_key.u.ipv4.src, |
67b61f6c | 631 | nla_get_in_addr(a), is_mask); |
6b26ba3a | 632 | ipv4 = true; |
e6445719 PS |
633 | break; |
634 | case OVS_TUNNEL_KEY_ATTR_IPV4_DST: | |
c1ea5d67 | 635 | SW_FLOW_KEY_PUT(match, tun_key.u.ipv4.dst, |
67b61f6c | 636 | nla_get_in_addr(a), is_mask); |
6b26ba3a JB |
637 | ipv4 = true; |
638 | break; | |
639 | case OVS_TUNNEL_KEY_ATTR_IPV6_SRC: | |
3d20f1f7 | 640 | SW_FLOW_KEY_PUT(match, tun_key.u.ipv6.src, |
6b26ba3a JB |
641 | nla_get_in6_addr(a), is_mask); |
642 | ipv6 = true; | |
643 | break; | |
644 | case OVS_TUNNEL_KEY_ATTR_IPV6_DST: | |
645 | SW_FLOW_KEY_PUT(match, tun_key.u.ipv6.dst, | |
646 | nla_get_in6_addr(a), is_mask); | |
647 | ipv6 = true; | |
e6445719 PS |
648 | break; |
649 | case OVS_TUNNEL_KEY_ATTR_TOS: | |
7c383fb2 | 650 | SW_FLOW_KEY_PUT(match, tun_key.tos, |
e6445719 PS |
651 | nla_get_u8(a), is_mask); |
652 | break; | |
653 | case OVS_TUNNEL_KEY_ATTR_TTL: | |
7c383fb2 | 654 | SW_FLOW_KEY_PUT(match, tun_key.ttl, |
e6445719 PS |
655 | nla_get_u8(a), is_mask); |
656 | ttl = true; | |
657 | break; | |
658 | case OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT: | |
659 | tun_flags |= TUNNEL_DONT_FRAGMENT; | |
660 | break; | |
661 | case OVS_TUNNEL_KEY_ATTR_CSUM: | |
662 | tun_flags |= TUNNEL_CSUM; | |
663 | break; | |
8f0aad6f WZ |
664 | case OVS_TUNNEL_KEY_ATTR_TP_SRC: |
665 | SW_FLOW_KEY_PUT(match, tun_key.tp_src, | |
666 | nla_get_be16(a), is_mask); | |
667 | break; | |
668 | case OVS_TUNNEL_KEY_ATTR_TP_DST: | |
669 | SW_FLOW_KEY_PUT(match, tun_key.tp_dst, | |
670 | nla_get_be16(a), is_mask); | |
671 | break; | |
67fa0341 JG |
672 | case OVS_TUNNEL_KEY_ATTR_OAM: |
673 | tun_flags |= TUNNEL_OAM; | |
674 | break; | |
f5796684 | 675 | case OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS: |
1dd144cf TG |
676 | if (opts_type) { |
677 | OVS_NLERR(log, "Multiple metadata blocks provided"); | |
678 | return -EINVAL; | |
679 | } | |
680 | ||
05da5898 JR |
681 | err = genev_tun_opt_from_nlattr(a, match, is_mask, log); |
682 | if (err) | |
683 | return err; | |
f5796684 | 684 | |
1dd144cf TG |
685 | tun_flags |= TUNNEL_GENEVE_OPT; |
686 | opts_type = type; | |
687 | break; | |
688 | case OVS_TUNNEL_KEY_ATTR_VXLAN_OPTS: | |
689 | if (opts_type) { | |
690 | OVS_NLERR(log, "Multiple metadata blocks provided"); | |
691 | return -EINVAL; | |
692 | } | |
693 | ||
694 | err = vxlan_tun_opt_from_nlattr(a, match, is_mask, log); | |
695 | if (err) | |
696 | return err; | |
697 | ||
698 | tun_flags |= TUNNEL_VXLAN_OPT; | |
699 | opts_type = type; | |
f5796684 | 700 | break; |
8f3dbfd7 KM |
701 | case OVS_TUNNEL_KEY_ATTR_PAD: |
702 | break; | |
e6445719 | 703 | default: |
6b26ba3a | 704 | OVS_NLERR(log, "Unknown IP tunnel attribute %d", |
f5796684 | 705 | type); |
e6445719 PS |
706 | return -EINVAL; |
707 | } | |
708 | } | |
709 | ||
710 | SW_FLOW_KEY_PUT(match, tun_key.tun_flags, tun_flags, is_mask); | |
00a93bab JB |
711 | if (is_mask) |
712 | SW_FLOW_KEY_MEMSET_FIELD(match, tun_proto, 0xff, true); | |
713 | else | |
6b26ba3a JB |
714 | SW_FLOW_KEY_PUT(match, tun_proto, ipv6 ? AF_INET6 : AF_INET, |
715 | false); | |
e6445719 PS |
716 | |
717 | if (rem > 0) { | |
6b26ba3a | 718 | OVS_NLERR(log, "IP tunnel attribute has %d unknown bytes.", |
05da5898 | 719 | rem); |
e6445719 PS |
720 | return -EINVAL; |
721 | } | |
722 | ||
6b26ba3a JB |
723 | if (ipv4 && ipv6) { |
724 | OVS_NLERR(log, "Mixed IPv4 and IPv6 tunnel attributes"); | |
725 | return -EINVAL; | |
726 | } | |
727 | ||
e6445719 | 728 | if (!is_mask) { |
6b26ba3a JB |
729 | if (!ipv4 && !ipv6) { |
730 | OVS_NLERR(log, "IP tunnel dst address not specified"); | |
731 | return -EINVAL; | |
732 | } | |
733 | if (ipv4 && !match->key->tun_key.u.ipv4.dst) { | |
05da5898 | 734 | OVS_NLERR(log, "IPv4 tunnel dst address is zero"); |
e6445719 PS |
735 | return -EINVAL; |
736 | } | |
6b26ba3a JB |
737 | if (ipv6 && ipv6_addr_any(&match->key->tun_key.u.ipv6.dst)) { |
738 | OVS_NLERR(log, "IPv6 tunnel dst address is zero"); | |
739 | return -EINVAL; | |
740 | } | |
e6445719 PS |
741 | |
742 | if (!ttl) { | |
6b26ba3a | 743 | OVS_NLERR(log, "IP tunnel TTL not specified."); |
e6445719 PS |
744 | return -EINVAL; |
745 | } | |
746 | } | |
747 | ||
1dd144cf TG |
748 | return opts_type; |
749 | } | |
750 | ||
751 | static int vxlan_opt_to_nlattr(struct sk_buff *skb, | |
752 | const void *tun_opts, int swkey_tun_opts_len) | |
753 | { | |
614732ea | 754 | const struct vxlan_metadata *opts = tun_opts; |
1dd144cf TG |
755 | struct nlattr *nla; |
756 | ||
757 | nla = nla_nest_start(skb, OVS_TUNNEL_KEY_ATTR_VXLAN_OPTS); | |
758 | if (!nla) | |
759 | return -EMSGSIZE; | |
760 | ||
761 | if (nla_put_u32(skb, OVS_VXLAN_EXT_GBP, opts->gbp) < 0) | |
762 | return -EMSGSIZE; | |
763 | ||
764 | nla_nest_end(skb, nla); | |
e6445719 PS |
765 | return 0; |
766 | } | |
767 | ||
6b26ba3a JB |
768 | static int __ip_tun_to_nlattr(struct sk_buff *skb, |
769 | const struct ip_tunnel_key *output, | |
770 | const void *tun_opts, int swkey_tun_opts_len, | |
771 | unsigned short tun_proto) | |
e6445719 | 772 | { |
e6445719 | 773 | if (output->tun_flags & TUNNEL_KEY && |
b46f6ded ND |
774 | nla_put_be64(skb, OVS_TUNNEL_KEY_ATTR_ID, output->tun_id, |
775 | OVS_TUNNEL_KEY_ATTR_PAD)) | |
e6445719 | 776 | return -EMSGSIZE; |
6b26ba3a JB |
777 | switch (tun_proto) { |
778 | case AF_INET: | |
779 | if (output->u.ipv4.src && | |
780 | nla_put_in_addr(skb, OVS_TUNNEL_KEY_ATTR_IPV4_SRC, | |
781 | output->u.ipv4.src)) | |
782 | return -EMSGSIZE; | |
783 | if (output->u.ipv4.dst && | |
784 | nla_put_in_addr(skb, OVS_TUNNEL_KEY_ATTR_IPV4_DST, | |
785 | output->u.ipv4.dst)) | |
786 | return -EMSGSIZE; | |
787 | break; | |
788 | case AF_INET6: | |
789 | if (!ipv6_addr_any(&output->u.ipv6.src) && | |
790 | nla_put_in6_addr(skb, OVS_TUNNEL_KEY_ATTR_IPV6_SRC, | |
791 | &output->u.ipv6.src)) | |
792 | return -EMSGSIZE; | |
793 | if (!ipv6_addr_any(&output->u.ipv6.dst) && | |
794 | nla_put_in6_addr(skb, OVS_TUNNEL_KEY_ATTR_IPV6_DST, | |
795 | &output->u.ipv6.dst)) | |
796 | return -EMSGSIZE; | |
797 | break; | |
798 | } | |
7c383fb2 JB |
799 | if (output->tos && |
800 | nla_put_u8(skb, OVS_TUNNEL_KEY_ATTR_TOS, output->tos)) | |
e6445719 | 801 | return -EMSGSIZE; |
7c383fb2 | 802 | if (nla_put_u8(skb, OVS_TUNNEL_KEY_ATTR_TTL, output->ttl)) |
e6445719 PS |
803 | return -EMSGSIZE; |
804 | if ((output->tun_flags & TUNNEL_DONT_FRAGMENT) && | |
67fa0341 | 805 | nla_put_flag(skb, OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT)) |
e6445719 PS |
806 | return -EMSGSIZE; |
807 | if ((output->tun_flags & TUNNEL_CSUM) && | |
67fa0341 JG |
808 | nla_put_flag(skb, OVS_TUNNEL_KEY_ATTR_CSUM)) |
809 | return -EMSGSIZE; | |
8f0aad6f WZ |
810 | if (output->tp_src && |
811 | nla_put_be16(skb, OVS_TUNNEL_KEY_ATTR_TP_SRC, output->tp_src)) | |
812 | return -EMSGSIZE; | |
813 | if (output->tp_dst && | |
814 | nla_put_be16(skb, OVS_TUNNEL_KEY_ATTR_TP_DST, output->tp_dst)) | |
815 | return -EMSGSIZE; | |
67fa0341 JG |
816 | if ((output->tun_flags & TUNNEL_OAM) && |
817 | nla_put_flag(skb, OVS_TUNNEL_KEY_ATTR_OAM)) | |
e6445719 | 818 | return -EMSGSIZE; |
fc4099f1 | 819 | if (swkey_tun_opts_len) { |
1dd144cf TG |
820 | if (output->tun_flags & TUNNEL_GENEVE_OPT && |
821 | nla_put(skb, OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS, | |
822 | swkey_tun_opts_len, tun_opts)) | |
823 | return -EMSGSIZE; | |
824 | else if (output->tun_flags & TUNNEL_VXLAN_OPT && | |
825 | vxlan_opt_to_nlattr(skb, tun_opts, swkey_tun_opts_len)) | |
826 | return -EMSGSIZE; | |
827 | } | |
e6445719 | 828 | |
e6445719 PS |
829 | return 0; |
830 | } | |
831 | ||
6b26ba3a JB |
832 | static int ip_tun_to_nlattr(struct sk_buff *skb, |
833 | const struct ip_tunnel_key *output, | |
834 | const void *tun_opts, int swkey_tun_opts_len, | |
835 | unsigned short tun_proto) | |
f5796684 JG |
836 | { |
837 | struct nlattr *nla; | |
838 | int err; | |
839 | ||
840 | nla = nla_nest_start(skb, OVS_KEY_ATTR_TUNNEL); | |
841 | if (!nla) | |
842 | return -EMSGSIZE; | |
843 | ||
6b26ba3a JB |
844 | err = __ip_tun_to_nlattr(skb, output, tun_opts, swkey_tun_opts_len, |
845 | tun_proto); | |
f5796684 JG |
846 | if (err) |
847 | return err; | |
848 | ||
849 | nla_nest_end(skb, nla); | |
850 | return 0; | |
851 | } | |
852 | ||
fc4099f1 PS |
853 | int ovs_nla_put_tunnel_info(struct sk_buff *skb, |
854 | struct ip_tunnel_info *tun_info) | |
8f0aad6f | 855 | { |
ba3e2084 DM |
856 | return __ip_tun_to_nlattr(skb, &tun_info->key, |
857 | ip_tunnel_info_opts(tun_info), | |
858 | tun_info->options_len, | |
859 | ip_tunnel_info_af(tun_info)); | |
8f0aad6f WZ |
860 | } |
861 | ||
018c1dda EG |
862 | static int encode_vlan_from_nlattrs(struct sw_flow_match *match, |
863 | const struct nlattr *a[], | |
864 | bool is_mask, bool inner) | |
865 | { | |
866 | __be16 tci = 0; | |
867 | __be16 tpid = 0; | |
868 | ||
869 | if (a[OVS_KEY_ATTR_VLAN]) | |
870 | tci = nla_get_be16(a[OVS_KEY_ATTR_VLAN]); | |
871 | ||
872 | if (a[OVS_KEY_ATTR_ETHERTYPE]) | |
873 | tpid = nla_get_be16(a[OVS_KEY_ATTR_ETHERTYPE]); | |
874 | ||
875 | if (likely(!inner)) { | |
876 | SW_FLOW_KEY_PUT(match, eth.vlan.tpid, tpid, is_mask); | |
877 | SW_FLOW_KEY_PUT(match, eth.vlan.tci, tci, is_mask); | |
878 | } else { | |
879 | SW_FLOW_KEY_PUT(match, eth.cvlan.tpid, tpid, is_mask); | |
880 | SW_FLOW_KEY_PUT(match, eth.cvlan.tci, tci, is_mask); | |
881 | } | |
882 | return 0; | |
883 | } | |
884 | ||
885 | static int validate_vlan_from_nlattrs(const struct sw_flow_match *match, | |
886 | u64 key_attrs, bool inner, | |
887 | const struct nlattr **a, bool log) | |
888 | { | |
889 | __be16 tci = 0; | |
890 | ||
891 | if (!((key_attrs & (1 << OVS_KEY_ATTR_ETHERNET)) && | |
892 | (key_attrs & (1 << OVS_KEY_ATTR_ETHERTYPE)) && | |
893 | eth_type_vlan(nla_get_be16(a[OVS_KEY_ATTR_ETHERTYPE])))) { | |
894 | /* Not a VLAN. */ | |
895 | return 0; | |
896 | } | |
897 | ||
898 | if (!((key_attrs & (1 << OVS_KEY_ATTR_VLAN)) && | |
899 | (key_attrs & (1 << OVS_KEY_ATTR_ENCAP)))) { | |
900 | OVS_NLERR(log, "Invalid %s frame", (inner) ? "C-VLAN" : "VLAN"); | |
901 | return -EINVAL; | |
902 | } | |
903 | ||
904 | if (a[OVS_KEY_ATTR_VLAN]) | |
905 | tci = nla_get_be16(a[OVS_KEY_ATTR_VLAN]); | |
906 | ||
907 | if (!(tci & htons(VLAN_TAG_PRESENT))) { | |
908 | if (tci) { | |
909 | OVS_NLERR(log, "%s TCI does not have VLAN_TAG_PRESENT bit set.", | |
910 | (inner) ? "C-VLAN" : "VLAN"); | |
911 | return -EINVAL; | |
912 | } else if (nla_len(a[OVS_KEY_ATTR_ENCAP])) { | |
913 | /* Corner case for truncated VLAN header. */ | |
914 | OVS_NLERR(log, "Truncated %s header has non-zero encap attribute.", | |
915 | (inner) ? "C-VLAN" : "VLAN"); | |
916 | return -EINVAL; | |
917 | } | |
918 | } | |
919 | ||
920 | return 1; | |
921 | } | |
922 | ||
923 | static int validate_vlan_mask_from_nlattrs(const struct sw_flow_match *match, | |
924 | u64 key_attrs, bool inner, | |
925 | const struct nlattr **a, bool log) | |
926 | { | |
927 | __be16 tci = 0; | |
928 | __be16 tpid = 0; | |
929 | bool encap_valid = !!(match->key->eth.vlan.tci & | |
930 | htons(VLAN_TAG_PRESENT)); | |
931 | bool i_encap_valid = !!(match->key->eth.cvlan.tci & | |
932 | htons(VLAN_TAG_PRESENT)); | |
933 | ||
934 | if (!(key_attrs & (1 << OVS_KEY_ATTR_ENCAP))) { | |
935 | /* Not a VLAN. */ | |
936 | return 0; | |
937 | } | |
938 | ||
939 | if ((!inner && !encap_valid) || (inner && !i_encap_valid)) { | |
940 | OVS_NLERR(log, "Encap mask attribute is set for non-%s frame.", | |
941 | (inner) ? "C-VLAN" : "VLAN"); | |
942 | return -EINVAL; | |
943 | } | |
944 | ||
945 | if (a[OVS_KEY_ATTR_VLAN]) | |
946 | tci = nla_get_be16(a[OVS_KEY_ATTR_VLAN]); | |
947 | ||
948 | if (a[OVS_KEY_ATTR_ETHERTYPE]) | |
949 | tpid = nla_get_be16(a[OVS_KEY_ATTR_ETHERTYPE]); | |
950 | ||
951 | if (tpid != htons(0xffff)) { | |
952 | OVS_NLERR(log, "Must have an exact match on %s TPID (mask=%x).", | |
953 | (inner) ? "C-VLAN" : "VLAN", ntohs(tpid)); | |
954 | return -EINVAL; | |
955 | } | |
956 | if (!(tci & htons(VLAN_TAG_PRESENT))) { | |
957 | OVS_NLERR(log, "%s TCI mask does not have exact match for VLAN_TAG_PRESENT bit.", | |
958 | (inner) ? "C-VLAN" : "VLAN"); | |
959 | return -EINVAL; | |
960 | } | |
961 | ||
962 | return 1; | |
963 | } | |
964 | ||
965 | static int __parse_vlan_from_nlattrs(struct sw_flow_match *match, | |
966 | u64 *key_attrs, bool inner, | |
967 | const struct nlattr **a, bool is_mask, | |
968 | bool log) | |
969 | { | |
970 | int err; | |
971 | const struct nlattr *encap; | |
972 | ||
973 | if (!is_mask) | |
974 | err = validate_vlan_from_nlattrs(match, *key_attrs, inner, | |
975 | a, log); | |
976 | else | |
977 | err = validate_vlan_mask_from_nlattrs(match, *key_attrs, inner, | |
978 | a, log); | |
979 | if (err <= 0) | |
980 | return err; | |
981 | ||
982 | err = encode_vlan_from_nlattrs(match, a, is_mask, inner); | |
983 | if (err) | |
984 | return err; | |
985 | ||
986 | *key_attrs &= ~(1 << OVS_KEY_ATTR_ENCAP); | |
987 | *key_attrs &= ~(1 << OVS_KEY_ATTR_VLAN); | |
988 | *key_attrs &= ~(1 << OVS_KEY_ATTR_ETHERTYPE); | |
989 | ||
990 | encap = a[OVS_KEY_ATTR_ENCAP]; | |
991 | ||
992 | if (!is_mask) | |
993 | err = parse_flow_nlattrs(encap, a, key_attrs, log); | |
994 | else | |
995 | err = parse_flow_mask_nlattrs(encap, a, key_attrs, log); | |
996 | ||
997 | return err; | |
998 | } | |
999 | ||
1000 | static int parse_vlan_from_nlattrs(struct sw_flow_match *match, | |
1001 | u64 *key_attrs, const struct nlattr **a, | |
1002 | bool is_mask, bool log) | |
1003 | { | |
1004 | int err; | |
1005 | bool encap_valid = false; | |
1006 | ||
1007 | err = __parse_vlan_from_nlattrs(match, key_attrs, false, a, | |
1008 | is_mask, log); | |
1009 | if (err) | |
1010 | return err; | |
1011 | ||
1012 | encap_valid = !!(match->key->eth.vlan.tci & htons(VLAN_TAG_PRESENT)); | |
1013 | if (encap_valid) { | |
1014 | err = __parse_vlan_from_nlattrs(match, key_attrs, true, a, | |
1015 | is_mask, log); | |
1016 | if (err) | |
1017 | return err; | |
1018 | } | |
1019 | ||
1020 | return 0; | |
1021 | } | |
1022 | ||
0a6410fb JB |
1023 | static int parse_eth_type_from_nlattrs(struct sw_flow_match *match, |
1024 | u64 *attrs, const struct nlattr **a, | |
1025 | bool is_mask, bool log) | |
1026 | { | |
1027 | __be16 eth_type; | |
1028 | ||
1029 | eth_type = nla_get_be16(a[OVS_KEY_ATTR_ETHERTYPE]); | |
1030 | if (is_mask) { | |
1031 | /* Always exact match EtherType. */ | |
1032 | eth_type = htons(0xffff); | |
1033 | } else if (!eth_proto_is_802_3(eth_type)) { | |
1034 | OVS_NLERR(log, "EtherType %x is less than min %x", | |
1035 | ntohs(eth_type), ETH_P_802_3_MIN); | |
1036 | return -EINVAL; | |
1037 | } | |
1038 | ||
1039 | SW_FLOW_KEY_PUT(match, eth.type, eth_type, is_mask); | |
1040 | *attrs &= ~(1 << OVS_KEY_ATTR_ETHERTYPE); | |
1041 | return 0; | |
1042 | } | |
1043 | ||
c2ac6673 JS |
1044 | static int metadata_from_nlattrs(struct net *net, struct sw_flow_match *match, |
1045 | u64 *attrs, const struct nlattr **a, | |
1046 | bool is_mask, bool log) | |
e6445719 | 1047 | { |
0a6410fb JB |
1048 | u8 mac_proto = MAC_PROTO_ETHERNET; |
1049 | ||
971427f3 AZ |
1050 | if (*attrs & (1 << OVS_KEY_ATTR_DP_HASH)) { |
1051 | u32 hash_val = nla_get_u32(a[OVS_KEY_ATTR_DP_HASH]); | |
1052 | ||
1053 | SW_FLOW_KEY_PUT(match, ovs_flow_hash, hash_val, is_mask); | |
1054 | *attrs &= ~(1 << OVS_KEY_ATTR_DP_HASH); | |
1055 | } | |
1056 | ||
1057 | if (*attrs & (1 << OVS_KEY_ATTR_RECIRC_ID)) { | |
1058 | u32 recirc_id = nla_get_u32(a[OVS_KEY_ATTR_RECIRC_ID]); | |
1059 | ||
1060 | SW_FLOW_KEY_PUT(match, recirc_id, recirc_id, is_mask); | |
1061 | *attrs &= ~(1 << OVS_KEY_ATTR_RECIRC_ID); | |
1062 | } | |
1063 | ||
e6445719 PS |
1064 | if (*attrs & (1 << OVS_KEY_ATTR_PRIORITY)) { |
1065 | SW_FLOW_KEY_PUT(match, phy.priority, | |
1066 | nla_get_u32(a[OVS_KEY_ATTR_PRIORITY]), is_mask); | |
1067 | *attrs &= ~(1 << OVS_KEY_ATTR_PRIORITY); | |
1068 | } | |
1069 | ||
1070 | if (*attrs & (1 << OVS_KEY_ATTR_IN_PORT)) { | |
1071 | u32 in_port = nla_get_u32(a[OVS_KEY_ATTR_IN_PORT]); | |
1072 | ||
426cda5c | 1073 | if (is_mask) { |
e6445719 | 1074 | in_port = 0xffffffff; /* Always exact match in_port. */ |
426cda5c | 1075 | } else if (in_port >= DP_MAX_PORTS) { |
05da5898 | 1076 | OVS_NLERR(log, "Port %d exceeds max allowable %d", |
426cda5c | 1077 | in_port, DP_MAX_PORTS); |
e6445719 | 1078 | return -EINVAL; |
426cda5c | 1079 | } |
e6445719 PS |
1080 | |
1081 | SW_FLOW_KEY_PUT(match, phy.in_port, in_port, is_mask); | |
1082 | *attrs &= ~(1 << OVS_KEY_ATTR_IN_PORT); | |
1083 | } else if (!is_mask) { | |
1084 | SW_FLOW_KEY_PUT(match, phy.in_port, DP_MAX_PORTS, is_mask); | |
1085 | } | |
1086 | ||
1087 | if (*attrs & (1 << OVS_KEY_ATTR_SKB_MARK)) { | |
1088 | uint32_t mark = nla_get_u32(a[OVS_KEY_ATTR_SKB_MARK]); | |
1089 | ||
1090 | SW_FLOW_KEY_PUT(match, phy.skb_mark, mark, is_mask); | |
1091 | *attrs &= ~(1 << OVS_KEY_ATTR_SKB_MARK); | |
1092 | } | |
1093 | if (*attrs & (1 << OVS_KEY_ATTR_TUNNEL)) { | |
6b26ba3a JB |
1094 | if (ip_tun_from_nlattr(a[OVS_KEY_ATTR_TUNNEL], match, |
1095 | is_mask, log) < 0) | |
e6445719 PS |
1096 | return -EINVAL; |
1097 | *attrs &= ~(1 << OVS_KEY_ATTR_TUNNEL); | |
1098 | } | |
7f8a436e JS |
1099 | |
1100 | if (*attrs & (1 << OVS_KEY_ATTR_CT_STATE) && | |
c2ac6673 | 1101 | ovs_ct_verify(net, OVS_KEY_ATTR_CT_STATE)) { |
fbccce59 | 1102 | u32 ct_state = nla_get_u32(a[OVS_KEY_ATTR_CT_STATE]); |
7f8a436e | 1103 | |
9e384715 | 1104 | if (ct_state & ~CT_SUPPORTED_MASK) { |
fbccce59 | 1105 | OVS_NLERR(log, "ct_state flags %08x unsupported", |
6f225952 JS |
1106 | ct_state); |
1107 | return -EINVAL; | |
1108 | } | |
7f8a436e | 1109 | |
316d4d78 | 1110 | SW_FLOW_KEY_PUT(match, ct_state, ct_state, is_mask); |
7f8a436e JS |
1111 | *attrs &= ~(1ULL << OVS_KEY_ATTR_CT_STATE); |
1112 | } | |
1113 | if (*attrs & (1 << OVS_KEY_ATTR_CT_ZONE) && | |
c2ac6673 | 1114 | ovs_ct_verify(net, OVS_KEY_ATTR_CT_ZONE)) { |
7f8a436e JS |
1115 | u16 ct_zone = nla_get_u16(a[OVS_KEY_ATTR_CT_ZONE]); |
1116 | ||
316d4d78 | 1117 | SW_FLOW_KEY_PUT(match, ct_zone, ct_zone, is_mask); |
7f8a436e JS |
1118 | *attrs &= ~(1ULL << OVS_KEY_ATTR_CT_ZONE); |
1119 | } | |
182e3042 | 1120 | if (*attrs & (1 << OVS_KEY_ATTR_CT_MARK) && |
c2ac6673 | 1121 | ovs_ct_verify(net, OVS_KEY_ATTR_CT_MARK)) { |
182e3042 JS |
1122 | u32 mark = nla_get_u32(a[OVS_KEY_ATTR_CT_MARK]); |
1123 | ||
1124 | SW_FLOW_KEY_PUT(match, ct.mark, mark, is_mask); | |
1125 | *attrs &= ~(1ULL << OVS_KEY_ATTR_CT_MARK); | |
1126 | } | |
33db4125 JS |
1127 | if (*attrs & (1 << OVS_KEY_ATTR_CT_LABELS) && |
1128 | ovs_ct_verify(net, OVS_KEY_ATTR_CT_LABELS)) { | |
1129 | const struct ovs_key_ct_labels *cl; | |
c2ac6673 | 1130 | |
33db4125 JS |
1131 | cl = nla_data(a[OVS_KEY_ATTR_CT_LABELS]); |
1132 | SW_FLOW_KEY_MEMCPY(match, ct.labels, cl->ct_labels, | |
c2ac6673 | 1133 | sizeof(*cl), is_mask); |
33db4125 | 1134 | *attrs &= ~(1ULL << OVS_KEY_ATTR_CT_LABELS); |
c2ac6673 | 1135 | } |
9dd7f890 JR |
1136 | if (*attrs & (1ULL << OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV4)) { |
1137 | const struct ovs_key_ct_tuple_ipv4 *ct; | |
1138 | ||
1139 | ct = nla_data(a[OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV4]); | |
1140 | ||
1141 | SW_FLOW_KEY_PUT(match, ipv4.ct_orig.src, ct->ipv4_src, is_mask); | |
1142 | SW_FLOW_KEY_PUT(match, ipv4.ct_orig.dst, ct->ipv4_dst, is_mask); | |
1143 | SW_FLOW_KEY_PUT(match, ct.orig_tp.src, ct->src_port, is_mask); | |
1144 | SW_FLOW_KEY_PUT(match, ct.orig_tp.dst, ct->dst_port, is_mask); | |
316d4d78 | 1145 | SW_FLOW_KEY_PUT(match, ct_orig_proto, ct->ipv4_proto, is_mask); |
9dd7f890 JR |
1146 | *attrs &= ~(1ULL << OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV4); |
1147 | } | |
1148 | if (*attrs & (1ULL << OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV6)) { | |
1149 | const struct ovs_key_ct_tuple_ipv6 *ct; | |
1150 | ||
1151 | ct = nla_data(a[OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV6]); | |
1152 | ||
1153 | SW_FLOW_KEY_MEMCPY(match, ipv6.ct_orig.src, &ct->ipv6_src, | |
1154 | sizeof(match->key->ipv6.ct_orig.src), | |
1155 | is_mask); | |
1156 | SW_FLOW_KEY_MEMCPY(match, ipv6.ct_orig.dst, &ct->ipv6_dst, | |
1157 | sizeof(match->key->ipv6.ct_orig.dst), | |
1158 | is_mask); | |
1159 | SW_FLOW_KEY_PUT(match, ct.orig_tp.src, ct->src_port, is_mask); | |
1160 | SW_FLOW_KEY_PUT(match, ct.orig_tp.dst, ct->dst_port, is_mask); | |
316d4d78 | 1161 | SW_FLOW_KEY_PUT(match, ct_orig_proto, ct->ipv6_proto, is_mask); |
9dd7f890 JR |
1162 | *attrs &= ~(1ULL << OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV6); |
1163 | } | |
329f45bc | 1164 | |
0a6410fb JB |
1165 | /* For layer 3 packets the Ethernet type is provided |
1166 | * and treated as metadata but no MAC addresses are provided. | |
1167 | */ | |
1168 | if (!(*attrs & (1ULL << OVS_KEY_ATTR_ETHERNET)) && | |
1169 | (*attrs & (1ULL << OVS_KEY_ATTR_ETHERTYPE))) | |
1170 | mac_proto = MAC_PROTO_NONE; | |
1171 | ||
329f45bc | 1172 | /* Always exact match mac_proto */ |
0a6410fb JB |
1173 | SW_FLOW_KEY_PUT(match, mac_proto, is_mask ? 0xff : mac_proto, is_mask); |
1174 | ||
1175 | if (mac_proto == MAC_PROTO_NONE) | |
1176 | return parse_eth_type_from_nlattrs(match, attrs, a, is_mask, | |
1177 | log); | |
329f45bc | 1178 | |
e6445719 PS |
1179 | return 0; |
1180 | } | |
1181 | ||
c2ac6673 JS |
1182 | static int ovs_key_from_nlattrs(struct net *net, struct sw_flow_match *match, |
1183 | u64 attrs, const struct nlattr **a, | |
1184 | bool is_mask, bool log) | |
e6445719 PS |
1185 | { |
1186 | int err; | |
e6445719 | 1187 | |
c2ac6673 | 1188 | err = metadata_from_nlattrs(net, match, &attrs, a, is_mask, log); |
e6445719 PS |
1189 | if (err) |
1190 | return err; | |
1191 | ||
1192 | if (attrs & (1 << OVS_KEY_ATTR_ETHERNET)) { | |
1193 | const struct ovs_key_ethernet *eth_key; | |
1194 | ||
1195 | eth_key = nla_data(a[OVS_KEY_ATTR_ETHERNET]); | |
1196 | SW_FLOW_KEY_MEMCPY(match, eth.src, | |
1197 | eth_key->eth_src, ETH_ALEN, is_mask); | |
1198 | SW_FLOW_KEY_MEMCPY(match, eth.dst, | |
1199 | eth_key->eth_dst, ETH_ALEN, is_mask); | |
1200 | attrs &= ~(1 << OVS_KEY_ATTR_ETHERNET); | |
e6445719 | 1201 | |
0a6410fb JB |
1202 | if (attrs & (1 << OVS_KEY_ATTR_VLAN)) { |
1203 | /* VLAN attribute is always parsed before getting here since it | |
1204 | * may occur multiple times. | |
1205 | */ | |
1206 | OVS_NLERR(log, "VLAN attribute unexpected."); | |
e6445719 PS |
1207 | return -EINVAL; |
1208 | } | |
1209 | ||
0a6410fb JB |
1210 | if (attrs & (1 << OVS_KEY_ATTR_ETHERTYPE)) { |
1211 | err = parse_eth_type_from_nlattrs(match, &attrs, a, is_mask, | |
1212 | log); | |
1213 | if (err) | |
1214 | return err; | |
1215 | } else if (!is_mask) { | |
1216 | SW_FLOW_KEY_PUT(match, eth.type, htons(ETH_P_802_2), is_mask); | |
1217 | } | |
1218 | } else if (!match->key->eth.type) { | |
1219 | OVS_NLERR(log, "Either Ethernet header or EtherType is required."); | |
1220 | return -EINVAL; | |
e6445719 PS |
1221 | } |
1222 | ||
1223 | if (attrs & (1 << OVS_KEY_ATTR_IPV4)) { | |
1224 | const struct ovs_key_ipv4 *ipv4_key; | |
1225 | ||
1226 | ipv4_key = nla_data(a[OVS_KEY_ATTR_IPV4]); | |
1227 | if (!is_mask && ipv4_key->ipv4_frag > OVS_FRAG_TYPE_MAX) { | |
05da5898 JR |
1228 | OVS_NLERR(log, "IPv4 frag type %d is out of range max %d", |
1229 | ipv4_key->ipv4_frag, OVS_FRAG_TYPE_MAX); | |
e6445719 PS |
1230 | return -EINVAL; |
1231 | } | |
1232 | SW_FLOW_KEY_PUT(match, ip.proto, | |
1233 | ipv4_key->ipv4_proto, is_mask); | |
1234 | SW_FLOW_KEY_PUT(match, ip.tos, | |
1235 | ipv4_key->ipv4_tos, is_mask); | |
1236 | SW_FLOW_KEY_PUT(match, ip.ttl, | |
1237 | ipv4_key->ipv4_ttl, is_mask); | |
1238 | SW_FLOW_KEY_PUT(match, ip.frag, | |
1239 | ipv4_key->ipv4_frag, is_mask); | |
1240 | SW_FLOW_KEY_PUT(match, ipv4.addr.src, | |
1241 | ipv4_key->ipv4_src, is_mask); | |
1242 | SW_FLOW_KEY_PUT(match, ipv4.addr.dst, | |
1243 | ipv4_key->ipv4_dst, is_mask); | |
1244 | attrs &= ~(1 << OVS_KEY_ATTR_IPV4); | |
1245 | } | |
1246 | ||
1247 | if (attrs & (1 << OVS_KEY_ATTR_IPV6)) { | |
1248 | const struct ovs_key_ipv6 *ipv6_key; | |
1249 | ||
1250 | ipv6_key = nla_data(a[OVS_KEY_ATTR_IPV6]); | |
1251 | if (!is_mask && ipv6_key->ipv6_frag > OVS_FRAG_TYPE_MAX) { | |
05da5898 JR |
1252 | OVS_NLERR(log, "IPv6 frag type %d is out of range max %d", |
1253 | ipv6_key->ipv6_frag, OVS_FRAG_TYPE_MAX); | |
e6445719 PS |
1254 | return -EINVAL; |
1255 | } | |
fecaef85 | 1256 | |
d3052bb5 | 1257 | if (!is_mask && ipv6_key->ipv6_label & htonl(0xFFF00000)) { |
14591433 | 1258 | OVS_NLERR(log, "IPv6 flow label %x is out of range (max=%x).\n", |
fecaef85 JR |
1259 | ntohl(ipv6_key->ipv6_label), (1 << 20) - 1); |
1260 | return -EINVAL; | |
1261 | } | |
1262 | ||
e6445719 PS |
1263 | SW_FLOW_KEY_PUT(match, ipv6.label, |
1264 | ipv6_key->ipv6_label, is_mask); | |
1265 | SW_FLOW_KEY_PUT(match, ip.proto, | |
1266 | ipv6_key->ipv6_proto, is_mask); | |
1267 | SW_FLOW_KEY_PUT(match, ip.tos, | |
1268 | ipv6_key->ipv6_tclass, is_mask); | |
1269 | SW_FLOW_KEY_PUT(match, ip.ttl, | |
1270 | ipv6_key->ipv6_hlimit, is_mask); | |
1271 | SW_FLOW_KEY_PUT(match, ip.frag, | |
1272 | ipv6_key->ipv6_frag, is_mask); | |
1273 | SW_FLOW_KEY_MEMCPY(match, ipv6.addr.src, | |
1274 | ipv6_key->ipv6_src, | |
1275 | sizeof(match->key->ipv6.addr.src), | |
1276 | is_mask); | |
1277 | SW_FLOW_KEY_MEMCPY(match, ipv6.addr.dst, | |
1278 | ipv6_key->ipv6_dst, | |
1279 | sizeof(match->key->ipv6.addr.dst), | |
1280 | is_mask); | |
1281 | ||
1282 | attrs &= ~(1 << OVS_KEY_ATTR_IPV6); | |
1283 | } | |
1284 | ||
1285 | if (attrs & (1 << OVS_KEY_ATTR_ARP)) { | |
1286 | const struct ovs_key_arp *arp_key; | |
1287 | ||
1288 | arp_key = nla_data(a[OVS_KEY_ATTR_ARP]); | |
1289 | if (!is_mask && (arp_key->arp_op & htons(0xff00))) { | |
05da5898 | 1290 | OVS_NLERR(log, "Unknown ARP opcode (opcode=%d).", |
e6445719 PS |
1291 | arp_key->arp_op); |
1292 | return -EINVAL; | |
1293 | } | |
1294 | ||
1295 | SW_FLOW_KEY_PUT(match, ipv4.addr.src, | |
1296 | arp_key->arp_sip, is_mask); | |
1297 | SW_FLOW_KEY_PUT(match, ipv4.addr.dst, | |
1298 | arp_key->arp_tip, is_mask); | |
1299 | SW_FLOW_KEY_PUT(match, ip.proto, | |
1300 | ntohs(arp_key->arp_op), is_mask); | |
1301 | SW_FLOW_KEY_MEMCPY(match, ipv4.arp.sha, | |
1302 | arp_key->arp_sha, ETH_ALEN, is_mask); | |
1303 | SW_FLOW_KEY_MEMCPY(match, ipv4.arp.tha, | |
1304 | arp_key->arp_tha, ETH_ALEN, is_mask); | |
1305 | ||
1306 | attrs &= ~(1 << OVS_KEY_ATTR_ARP); | |
1307 | } | |
1308 | ||
25cd9ba0 SH |
1309 | if (attrs & (1 << OVS_KEY_ATTR_MPLS)) { |
1310 | const struct ovs_key_mpls *mpls_key; | |
1311 | ||
1312 | mpls_key = nla_data(a[OVS_KEY_ATTR_MPLS]); | |
1313 | SW_FLOW_KEY_PUT(match, mpls.top_lse, | |
1314 | mpls_key->mpls_lse, is_mask); | |
1315 | ||
1316 | attrs &= ~(1 << OVS_KEY_ATTR_MPLS); | |
1317 | } | |
1318 | ||
e6445719 PS |
1319 | if (attrs & (1 << OVS_KEY_ATTR_TCP)) { |
1320 | const struct ovs_key_tcp *tcp_key; | |
1321 | ||
1322 | tcp_key = nla_data(a[OVS_KEY_ATTR_TCP]); | |
1139e241 JR |
1323 | SW_FLOW_KEY_PUT(match, tp.src, tcp_key->tcp_src, is_mask); |
1324 | SW_FLOW_KEY_PUT(match, tp.dst, tcp_key->tcp_dst, is_mask); | |
e6445719 PS |
1325 | attrs &= ~(1 << OVS_KEY_ATTR_TCP); |
1326 | } | |
1327 | ||
5eb26b15 | 1328 | if (attrs & (1 << OVS_KEY_ATTR_TCP_FLAGS)) { |
1b760fb9 JS |
1329 | SW_FLOW_KEY_PUT(match, tp.flags, |
1330 | nla_get_be16(a[OVS_KEY_ATTR_TCP_FLAGS]), | |
1331 | is_mask); | |
5eb26b15 JR |
1332 | attrs &= ~(1 << OVS_KEY_ATTR_TCP_FLAGS); |
1333 | } | |
1334 | ||
e6445719 PS |
1335 | if (attrs & (1 << OVS_KEY_ATTR_UDP)) { |
1336 | const struct ovs_key_udp *udp_key; | |
1337 | ||
1338 | udp_key = nla_data(a[OVS_KEY_ATTR_UDP]); | |
1139e241 JR |
1339 | SW_FLOW_KEY_PUT(match, tp.src, udp_key->udp_src, is_mask); |
1340 | SW_FLOW_KEY_PUT(match, tp.dst, udp_key->udp_dst, is_mask); | |
e6445719 PS |
1341 | attrs &= ~(1 << OVS_KEY_ATTR_UDP); |
1342 | } | |
1343 | ||
1344 | if (attrs & (1 << OVS_KEY_ATTR_SCTP)) { | |
1345 | const struct ovs_key_sctp *sctp_key; | |
1346 | ||
1347 | sctp_key = nla_data(a[OVS_KEY_ATTR_SCTP]); | |
1139e241 JR |
1348 | SW_FLOW_KEY_PUT(match, tp.src, sctp_key->sctp_src, is_mask); |
1349 | SW_FLOW_KEY_PUT(match, tp.dst, sctp_key->sctp_dst, is_mask); | |
e6445719 PS |
1350 | attrs &= ~(1 << OVS_KEY_ATTR_SCTP); |
1351 | } | |
1352 | ||
1353 | if (attrs & (1 << OVS_KEY_ATTR_ICMP)) { | |
1354 | const struct ovs_key_icmp *icmp_key; | |
1355 | ||
1356 | icmp_key = nla_data(a[OVS_KEY_ATTR_ICMP]); | |
1139e241 | 1357 | SW_FLOW_KEY_PUT(match, tp.src, |
e6445719 | 1358 | htons(icmp_key->icmp_type), is_mask); |
1139e241 | 1359 | SW_FLOW_KEY_PUT(match, tp.dst, |
e6445719 PS |
1360 | htons(icmp_key->icmp_code), is_mask); |
1361 | attrs &= ~(1 << OVS_KEY_ATTR_ICMP); | |
1362 | } | |
1363 | ||
1364 | if (attrs & (1 << OVS_KEY_ATTR_ICMPV6)) { | |
1365 | const struct ovs_key_icmpv6 *icmpv6_key; | |
1366 | ||
1367 | icmpv6_key = nla_data(a[OVS_KEY_ATTR_ICMPV6]); | |
1139e241 | 1368 | SW_FLOW_KEY_PUT(match, tp.src, |
e6445719 | 1369 | htons(icmpv6_key->icmpv6_type), is_mask); |
1139e241 | 1370 | SW_FLOW_KEY_PUT(match, tp.dst, |
e6445719 PS |
1371 | htons(icmpv6_key->icmpv6_code), is_mask); |
1372 | attrs &= ~(1 << OVS_KEY_ATTR_ICMPV6); | |
1373 | } | |
1374 | ||
1375 | if (attrs & (1 << OVS_KEY_ATTR_ND)) { | |
1376 | const struct ovs_key_nd *nd_key; | |
1377 | ||
1378 | nd_key = nla_data(a[OVS_KEY_ATTR_ND]); | |
1379 | SW_FLOW_KEY_MEMCPY(match, ipv6.nd.target, | |
1380 | nd_key->nd_target, | |
1381 | sizeof(match->key->ipv6.nd.target), | |
1382 | is_mask); | |
1383 | SW_FLOW_KEY_MEMCPY(match, ipv6.nd.sll, | |
1384 | nd_key->nd_sll, ETH_ALEN, is_mask); | |
1385 | SW_FLOW_KEY_MEMCPY(match, ipv6.nd.tll, | |
1386 | nd_key->nd_tll, ETH_ALEN, is_mask); | |
1387 | attrs &= ~(1 << OVS_KEY_ATTR_ND); | |
1388 | } | |
1389 | ||
426cda5c | 1390 | if (attrs != 0) { |
05da5898 | 1391 | OVS_NLERR(log, "Unknown key attributes %llx", |
426cda5c | 1392 | (unsigned long long)attrs); |
e6445719 | 1393 | return -EINVAL; |
426cda5c | 1394 | } |
e6445719 PS |
1395 | |
1396 | return 0; | |
1397 | } | |
1398 | ||
81bfe3c3 TG |
1399 | static void nlattr_set(struct nlattr *attr, u8 val, |
1400 | const struct ovs_len_tbl *tbl) | |
e6445719 | 1401 | { |
f47de068 PS |
1402 | struct nlattr *nla; |
1403 | int rem; | |
e6445719 | 1404 | |
f47de068 PS |
1405 | /* The nlattr stream should already have been validated */ |
1406 | nla_for_each_nested(nla, attr, rem) { | |
982b5270 JG |
1407 | if (tbl[nla_type(nla)].len == OVS_ATTR_NESTED) { |
1408 | if (tbl[nla_type(nla)].next) | |
1409 | tbl = tbl[nla_type(nla)].next; | |
1410 | nlattr_set(nla, val, tbl); | |
1411 | } else { | |
f47de068 | 1412 | memset(nla_data(nla), val, nla_len(nla)); |
982b5270 | 1413 | } |
9e384715 JS |
1414 | |
1415 | if (nla_type(nla) == OVS_KEY_ATTR_CT_STATE) | |
1416 | *(u32 *)nla_data(nla) &= CT_SUPPORTED_MASK; | |
f47de068 PS |
1417 | } |
1418 | } | |
1419 | ||
1420 | static void mask_set_nlattr(struct nlattr *attr, u8 val) | |
1421 | { | |
81bfe3c3 | 1422 | nlattr_set(attr, val, ovs_key_lens); |
e6445719 PS |
1423 | } |
1424 | ||
1425 | /** | |
1426 | * ovs_nla_get_match - parses Netlink attributes into a flow key and | |
1427 | * mask. In case the 'mask' is NULL, the flow is treated as exact match | |
1428 | * flow. Otherwise, it is treated as a wildcarded flow, except the mask | |
1429 | * does not include any don't care bit. | |
c2ac6673 | 1430 | * @net: Used to determine per-namespace field support. |
e6445719 PS |
1431 | * @match: receives the extracted flow match information. |
1432 | * @key: Netlink attribute holding nested %OVS_KEY_ATTR_* Netlink attribute | |
1433 | * sequence. The fields should of the packet that triggered the creation | |
1434 | * of this flow. | |
1435 | * @mask: Optional. Netlink attribute holding nested %OVS_KEY_ATTR_* Netlink | |
1436 | * attribute specifies the mask field of the wildcarded flow. | |
05da5898 JR |
1437 | * @log: Boolean to allow kernel error logging. Normally true, but when |
1438 | * probing for feature compatibility this should be passed in as false to | |
1439 | * suppress unnecessary error logging. | |
e6445719 | 1440 | */ |
c2ac6673 | 1441 | int ovs_nla_get_match(struct net *net, struct sw_flow_match *match, |
a85311bf | 1442 | const struct nlattr *nla_key, |
05da5898 JR |
1443 | const struct nlattr *nla_mask, |
1444 | bool log) | |
e6445719 PS |
1445 | { |
1446 | const struct nlattr *a[OVS_KEY_ATTR_MAX + 1]; | |
f47de068 | 1447 | struct nlattr *newmask = NULL; |
e6445719 PS |
1448 | u64 key_attrs = 0; |
1449 | u64 mask_attrs = 0; | |
e6445719 PS |
1450 | int err; |
1451 | ||
05da5898 | 1452 | err = parse_flow_nlattrs(nla_key, a, &key_attrs, log); |
e6445719 PS |
1453 | if (err) |
1454 | return err; | |
1455 | ||
018c1dda EG |
1456 | err = parse_vlan_from_nlattrs(match, &key_attrs, a, false, log); |
1457 | if (err) | |
1458 | return err; | |
e6445719 | 1459 | |
c2ac6673 | 1460 | err = ovs_key_from_nlattrs(net, match, key_attrs, a, false, log); |
e6445719 PS |
1461 | if (err) |
1462 | return err; | |
1463 | ||
a85311bf PS |
1464 | if (match->mask) { |
1465 | if (!nla_mask) { | |
1466 | /* Create an exact match mask. We need to set to 0xff | |
1467 | * all the 'match->mask' fields that have been touched | |
1468 | * in 'match->key'. We cannot simply memset | |
1469 | * 'match->mask', because padding bytes and fields not | |
1470 | * specified in 'match->key' should be left to 0. | |
1471 | * Instead, we use a stream of netlink attributes, | |
1472 | * copied from 'key' and set to 0xff. | |
1473 | * ovs_key_from_nlattrs() will take care of filling | |
1474 | * 'match->mask' appropriately. | |
1475 | */ | |
1476 | newmask = kmemdup(nla_key, | |
1477 | nla_total_size(nla_len(nla_key)), | |
1478 | GFP_KERNEL); | |
1479 | if (!newmask) | |
1480 | return -ENOMEM; | |
f47de068 | 1481 | |
a85311bf | 1482 | mask_set_nlattr(newmask, 0xff); |
f47de068 | 1483 | |
a85311bf PS |
1484 | /* The userspace does not send tunnel attributes that |
1485 | * are 0, but we should not wildcard them nonetheless. | |
1486 | */ | |
00a93bab | 1487 | if (match->key->tun_proto) |
a85311bf PS |
1488 | SW_FLOW_KEY_MEMSET_FIELD(match, tun_key, |
1489 | 0xff, true); | |
f47de068 | 1490 | |
a85311bf PS |
1491 | nla_mask = newmask; |
1492 | } | |
f47de068 | 1493 | |
05da5898 | 1494 | err = parse_flow_mask_nlattrs(nla_mask, a, &mask_attrs, log); |
e6445719 | 1495 | if (err) |
f47de068 | 1496 | goto free_newmask; |
e6445719 | 1497 | |
a85311bf | 1498 | /* Always match on tci. */ |
018c1dda EG |
1499 | SW_FLOW_KEY_PUT(match, eth.vlan.tci, htons(0xffff), true); |
1500 | SW_FLOW_KEY_PUT(match, eth.cvlan.tci, htons(0xffff), true); | |
e6445719 | 1501 | |
018c1dda EG |
1502 | err = parse_vlan_from_nlattrs(match, &mask_attrs, a, true, log); |
1503 | if (err) | |
1504 | goto free_newmask; | |
e6445719 | 1505 | |
c2ac6673 JS |
1506 | err = ovs_key_from_nlattrs(net, match, mask_attrs, a, true, |
1507 | log); | |
e6445719 | 1508 | if (err) |
f47de068 | 1509 | goto free_newmask; |
e6445719 PS |
1510 | } |
1511 | ||
05da5898 | 1512 | if (!match_validate(match, key_attrs, mask_attrs, log)) |
f47de068 | 1513 | err = -EINVAL; |
e6445719 | 1514 | |
f47de068 PS |
1515 | free_newmask: |
1516 | kfree(newmask); | |
1517 | return err; | |
e6445719 PS |
1518 | } |
1519 | ||
74ed7ab9 JS |
1520 | static size_t get_ufid_len(const struct nlattr *attr, bool log) |
1521 | { | |
1522 | size_t len; | |
1523 | ||
1524 | if (!attr) | |
1525 | return 0; | |
1526 | ||
1527 | len = nla_len(attr); | |
1528 | if (len < 1 || len > MAX_UFID_LENGTH) { | |
1529 | OVS_NLERR(log, "ufid size %u bytes exceeds the range (1, %d)", | |
1530 | nla_len(attr), MAX_UFID_LENGTH); | |
1531 | return 0; | |
1532 | } | |
1533 | ||
1534 | return len; | |
1535 | } | |
1536 | ||
1537 | /* Initializes 'flow->ufid', returning true if 'attr' contains a valid UFID, | |
1538 | * or false otherwise. | |
1539 | */ | |
1540 | bool ovs_nla_get_ufid(struct sw_flow_id *sfid, const struct nlattr *attr, | |
1541 | bool log) | |
1542 | { | |
1543 | sfid->ufid_len = get_ufid_len(attr, log); | |
1544 | if (sfid->ufid_len) | |
1545 | memcpy(sfid->ufid, nla_data(attr), sfid->ufid_len); | |
1546 | ||
1547 | return sfid->ufid_len; | |
1548 | } | |
1549 | ||
1550 | int ovs_nla_get_identifier(struct sw_flow_id *sfid, const struct nlattr *ufid, | |
1551 | const struct sw_flow_key *key, bool log) | |
1552 | { | |
1553 | struct sw_flow_key *new_key; | |
1554 | ||
1555 | if (ovs_nla_get_ufid(sfid, ufid, log)) | |
1556 | return 0; | |
1557 | ||
1558 | /* If UFID was not provided, use unmasked key. */ | |
1559 | new_key = kmalloc(sizeof(*new_key), GFP_KERNEL); | |
1560 | if (!new_key) | |
1561 | return -ENOMEM; | |
1562 | memcpy(new_key, key, sizeof(*key)); | |
1563 | sfid->unmasked_key = new_key; | |
1564 | ||
1565 | return 0; | |
1566 | } | |
1567 | ||
1568 | u32 ovs_nla_get_ufid_flags(const struct nlattr *attr) | |
1569 | { | |
1570 | return attr ? nla_get_u32(attr) : 0; | |
1571 | } | |
1572 | ||
e6445719 PS |
1573 | /** |
1574 | * ovs_nla_get_flow_metadata - parses Netlink attributes into a flow key. | |
9dd7f890 JR |
1575 | * @net: Network namespace. |
1576 | * @key: Receives extracted in_port, priority, tun_key, skb_mark and conntrack | |
1577 | * metadata. | |
1578 | * @a: Array of netlink attributes holding parsed %OVS_KEY_ATTR_* Netlink | |
1579 | * attributes. | |
1580 | * @attrs: Bit mask for the netlink attributes included in @a. | |
05da5898 JR |
1581 | * @log: Boolean to allow kernel error logging. Normally true, but when |
1582 | * probing for feature compatibility this should be passed in as false to | |
1583 | * suppress unnecessary error logging. | |
e6445719 PS |
1584 | * |
1585 | * This parses a series of Netlink attributes that form a flow key, which must | |
1586 | * take the same form accepted by flow_from_nlattrs(), but only enough of it to | |
1587 | * get the metadata, that is, the parts of the flow key that cannot be | |
1588 | * extracted from the packet itself. | |
9dd7f890 JR |
1589 | * |
1590 | * This must be called before the packet key fields are filled in 'key'. | |
e6445719 PS |
1591 | */ |
1592 | ||
9dd7f890 JR |
1593 | int ovs_nla_get_flow_metadata(struct net *net, |
1594 | const struct nlattr *a[OVS_KEY_ATTR_MAX + 1], | |
1595 | u64 attrs, struct sw_flow_key *key, bool log) | |
e6445719 | 1596 | { |
83c8df26 | 1597 | struct sw_flow_match match; |
e6445719 PS |
1598 | |
1599 | memset(&match, 0, sizeof(match)); | |
83c8df26 | 1600 | match.key = key; |
e6445719 | 1601 | |
316d4d78 JR |
1602 | key->ct_state = 0; |
1603 | key->ct_zone = 0; | |
1604 | key->ct_orig_proto = 0; | |
7f8a436e | 1605 | memset(&key->ct, 0, sizeof(key->ct)); |
9dd7f890 JR |
1606 | memset(&key->ipv4.ct_orig, 0, sizeof(key->ipv4.ct_orig)); |
1607 | memset(&key->ipv6.ct_orig, 0, sizeof(key->ipv6.ct_orig)); | |
1608 | ||
83c8df26 | 1609 | key->phy.in_port = DP_MAX_PORTS; |
e6445719 | 1610 | |
c2ac6673 | 1611 | return metadata_from_nlattrs(net, &match, &attrs, a, false, log); |
e6445719 PS |
1612 | } |
1613 | ||
018c1dda EG |
1614 | static int ovs_nla_put_vlan(struct sk_buff *skb, const struct vlan_head *vh, |
1615 | bool is_mask) | |
1616 | { | |
1617 | __be16 eth_type = !is_mask ? vh->tpid : htons(0xffff); | |
1618 | ||
1619 | if (nla_put_be16(skb, OVS_KEY_ATTR_ETHERTYPE, eth_type) || | |
1620 | nla_put_be16(skb, OVS_KEY_ATTR_VLAN, vh->tci)) | |
1621 | return -EMSGSIZE; | |
1622 | return 0; | |
1623 | } | |
1624 | ||
5b4237bb JS |
1625 | static int __ovs_nla_put_key(const struct sw_flow_key *swkey, |
1626 | const struct sw_flow_key *output, bool is_mask, | |
1627 | struct sk_buff *skb) | |
e6445719 PS |
1628 | { |
1629 | struct ovs_key_ethernet *eth_key; | |
018c1dda EG |
1630 | struct nlattr *nla; |
1631 | struct nlattr *encap = NULL; | |
1632 | struct nlattr *in_encap = NULL; | |
e6445719 | 1633 | |
971427f3 AZ |
1634 | if (nla_put_u32(skb, OVS_KEY_ATTR_RECIRC_ID, output->recirc_id)) |
1635 | goto nla_put_failure; | |
1636 | ||
1637 | if (nla_put_u32(skb, OVS_KEY_ATTR_DP_HASH, output->ovs_flow_hash)) | |
1638 | goto nla_put_failure; | |
1639 | ||
e6445719 PS |
1640 | if (nla_put_u32(skb, OVS_KEY_ATTR_PRIORITY, output->phy.priority)) |
1641 | goto nla_put_failure; | |
1642 | ||
00a93bab | 1643 | if ((swkey->tun_proto || is_mask)) { |
d91641d9 | 1644 | const void *opts = NULL; |
f5796684 JG |
1645 | |
1646 | if (output->tun_key.tun_flags & TUNNEL_OPTIONS_PRESENT) | |
d91641d9 | 1647 | opts = TUN_METADATA_OPTS(output, swkey->tun_opts_len); |
f5796684 | 1648 | |
6b26ba3a JB |
1649 | if (ip_tun_to_nlattr(skb, &output->tun_key, opts, |
1650 | swkey->tun_opts_len, swkey->tun_proto)) | |
f5796684 JG |
1651 | goto nla_put_failure; |
1652 | } | |
e6445719 PS |
1653 | |
1654 | if (swkey->phy.in_port == DP_MAX_PORTS) { | |
1655 | if (is_mask && (output->phy.in_port == 0xffff)) | |
1656 | if (nla_put_u32(skb, OVS_KEY_ATTR_IN_PORT, 0xffffffff)) | |
1657 | goto nla_put_failure; | |
1658 | } else { | |
1659 | u16 upper_u16; | |
1660 | upper_u16 = !is_mask ? 0 : 0xffff; | |
1661 | ||
1662 | if (nla_put_u32(skb, OVS_KEY_ATTR_IN_PORT, | |
1663 | (upper_u16 << 16) | output->phy.in_port)) | |
1664 | goto nla_put_failure; | |
1665 | } | |
1666 | ||
1667 | if (nla_put_u32(skb, OVS_KEY_ATTR_SKB_MARK, output->phy.skb_mark)) | |
1668 | goto nla_put_failure; | |
1669 | ||
9dd7f890 | 1670 | if (ovs_ct_put_key(swkey, output, skb)) |
7f8a436e JS |
1671 | goto nla_put_failure; |
1672 | ||
0a6410fb JB |
1673 | if (ovs_key_mac_proto(swkey) == MAC_PROTO_ETHERNET) { |
1674 | nla = nla_reserve(skb, OVS_KEY_ATTR_ETHERNET, sizeof(*eth_key)); | |
1675 | if (!nla) | |
e6445719 | 1676 | goto nla_put_failure; |
018c1dda | 1677 | |
0a6410fb JB |
1678 | eth_key = nla_data(nla); |
1679 | ether_addr_copy(eth_key->eth_src, output->eth.src); | |
1680 | ether_addr_copy(eth_key->eth_dst, output->eth.dst); | |
1681 | ||
1682 | if (swkey->eth.vlan.tci || eth_type_vlan(swkey->eth.type)) { | |
1683 | if (ovs_nla_put_vlan(skb, &output->eth.vlan, is_mask)) | |
018c1dda | 1684 | goto nla_put_failure; |
0a6410fb JB |
1685 | encap = nla_nest_start(skb, OVS_KEY_ATTR_ENCAP); |
1686 | if (!swkey->eth.vlan.tci) | |
018c1dda | 1687 | goto unencap; |
0a6410fb JB |
1688 | |
1689 | if (swkey->eth.cvlan.tci || eth_type_vlan(swkey->eth.type)) { | |
1690 | if (ovs_nla_put_vlan(skb, &output->eth.cvlan, is_mask)) | |
1691 | goto nla_put_failure; | |
1692 | in_encap = nla_nest_start(skb, OVS_KEY_ATTR_ENCAP); | |
1693 | if (!swkey->eth.cvlan.tci) | |
1694 | goto unencap; | |
1695 | } | |
018c1dda | 1696 | } |
e6445719 | 1697 | |
0a6410fb JB |
1698 | if (swkey->eth.type == htons(ETH_P_802_2)) { |
1699 | /* | |
1700 | * Ethertype 802.2 is represented in the netlink with omitted | |
1701 | * OVS_KEY_ATTR_ETHERTYPE in the flow key attribute, and | |
1702 | * 0xffff in the mask attribute. Ethertype can also | |
1703 | * be wildcarded. | |
1704 | */ | |
1705 | if (is_mask && output->eth.type) | |
1706 | if (nla_put_be16(skb, OVS_KEY_ATTR_ETHERTYPE, | |
1707 | output->eth.type)) | |
1708 | goto nla_put_failure; | |
1709 | goto unencap; | |
1710 | } | |
e6445719 PS |
1711 | } |
1712 | ||
1713 | if (nla_put_be16(skb, OVS_KEY_ATTR_ETHERTYPE, output->eth.type)) | |
1714 | goto nla_put_failure; | |
1715 | ||
018c1dda EG |
1716 | if (eth_type_vlan(swkey->eth.type)) { |
1717 | /* There are 3 VLAN tags, we don't know anything about the rest | |
1718 | * of the packet, so truncate here. | |
1719 | */ | |
1720 | WARN_ON_ONCE(!(encap && in_encap)); | |
1721 | goto unencap; | |
1722 | } | |
1723 | ||
e6445719 PS |
1724 | if (swkey->eth.type == htons(ETH_P_IP)) { |
1725 | struct ovs_key_ipv4 *ipv4_key; | |
1726 | ||
1727 | nla = nla_reserve(skb, OVS_KEY_ATTR_IPV4, sizeof(*ipv4_key)); | |
1728 | if (!nla) | |
1729 | goto nla_put_failure; | |
1730 | ipv4_key = nla_data(nla); | |
1731 | ipv4_key->ipv4_src = output->ipv4.addr.src; | |
1732 | ipv4_key->ipv4_dst = output->ipv4.addr.dst; | |
1733 | ipv4_key->ipv4_proto = output->ip.proto; | |
1734 | ipv4_key->ipv4_tos = output->ip.tos; | |
1735 | ipv4_key->ipv4_ttl = output->ip.ttl; | |
1736 | ipv4_key->ipv4_frag = output->ip.frag; | |
1737 | } else if (swkey->eth.type == htons(ETH_P_IPV6)) { | |
1738 | struct ovs_key_ipv6 *ipv6_key; | |
1739 | ||
1740 | nla = nla_reserve(skb, OVS_KEY_ATTR_IPV6, sizeof(*ipv6_key)); | |
1741 | if (!nla) | |
1742 | goto nla_put_failure; | |
1743 | ipv6_key = nla_data(nla); | |
1744 | memcpy(ipv6_key->ipv6_src, &output->ipv6.addr.src, | |
1745 | sizeof(ipv6_key->ipv6_src)); | |
1746 | memcpy(ipv6_key->ipv6_dst, &output->ipv6.addr.dst, | |
1747 | sizeof(ipv6_key->ipv6_dst)); | |
1748 | ipv6_key->ipv6_label = output->ipv6.label; | |
1749 | ipv6_key->ipv6_proto = output->ip.proto; | |
1750 | ipv6_key->ipv6_tclass = output->ip.tos; | |
1751 | ipv6_key->ipv6_hlimit = output->ip.ttl; | |
1752 | ipv6_key->ipv6_frag = output->ip.frag; | |
1753 | } else if (swkey->eth.type == htons(ETH_P_ARP) || | |
1754 | swkey->eth.type == htons(ETH_P_RARP)) { | |
1755 | struct ovs_key_arp *arp_key; | |
1756 | ||
1757 | nla = nla_reserve(skb, OVS_KEY_ATTR_ARP, sizeof(*arp_key)); | |
1758 | if (!nla) | |
1759 | goto nla_put_failure; | |
1760 | arp_key = nla_data(nla); | |
1761 | memset(arp_key, 0, sizeof(struct ovs_key_arp)); | |
1762 | arp_key->arp_sip = output->ipv4.addr.src; | |
1763 | arp_key->arp_tip = output->ipv4.addr.dst; | |
1764 | arp_key->arp_op = htons(output->ip.proto); | |
8c63ff09 JP |
1765 | ether_addr_copy(arp_key->arp_sha, output->ipv4.arp.sha); |
1766 | ether_addr_copy(arp_key->arp_tha, output->ipv4.arp.tha); | |
25cd9ba0 SH |
1767 | } else if (eth_p_mpls(swkey->eth.type)) { |
1768 | struct ovs_key_mpls *mpls_key; | |
1769 | ||
1770 | nla = nla_reserve(skb, OVS_KEY_ATTR_MPLS, sizeof(*mpls_key)); | |
1771 | if (!nla) | |
1772 | goto nla_put_failure; | |
1773 | mpls_key = nla_data(nla); | |
1774 | mpls_key->mpls_lse = output->mpls.top_lse; | |
e6445719 PS |
1775 | } |
1776 | ||
1777 | if ((swkey->eth.type == htons(ETH_P_IP) || | |
1778 | swkey->eth.type == htons(ETH_P_IPV6)) && | |
1779 | swkey->ip.frag != OVS_FRAG_TYPE_LATER) { | |
1780 | ||
1781 | if (swkey->ip.proto == IPPROTO_TCP) { | |
1782 | struct ovs_key_tcp *tcp_key; | |
1783 | ||
1784 | nla = nla_reserve(skb, OVS_KEY_ATTR_TCP, sizeof(*tcp_key)); | |
1785 | if (!nla) | |
1786 | goto nla_put_failure; | |
1787 | tcp_key = nla_data(nla); | |
1139e241 JR |
1788 | tcp_key->tcp_src = output->tp.src; |
1789 | tcp_key->tcp_dst = output->tp.dst; | |
1790 | if (nla_put_be16(skb, OVS_KEY_ATTR_TCP_FLAGS, | |
1791 | output->tp.flags)) | |
1792 | goto nla_put_failure; | |
e6445719 PS |
1793 | } else if (swkey->ip.proto == IPPROTO_UDP) { |
1794 | struct ovs_key_udp *udp_key; | |
1795 | ||
1796 | nla = nla_reserve(skb, OVS_KEY_ATTR_UDP, sizeof(*udp_key)); | |
1797 | if (!nla) | |
1798 | goto nla_put_failure; | |
1799 | udp_key = nla_data(nla); | |
1139e241 JR |
1800 | udp_key->udp_src = output->tp.src; |
1801 | udp_key->udp_dst = output->tp.dst; | |
e6445719 PS |
1802 | } else if (swkey->ip.proto == IPPROTO_SCTP) { |
1803 | struct ovs_key_sctp *sctp_key; | |
1804 | ||
1805 | nla = nla_reserve(skb, OVS_KEY_ATTR_SCTP, sizeof(*sctp_key)); | |
1806 | if (!nla) | |
1807 | goto nla_put_failure; | |
1808 | sctp_key = nla_data(nla); | |
1139e241 JR |
1809 | sctp_key->sctp_src = output->tp.src; |
1810 | sctp_key->sctp_dst = output->tp.dst; | |
e6445719 PS |
1811 | } else if (swkey->eth.type == htons(ETH_P_IP) && |
1812 | swkey->ip.proto == IPPROTO_ICMP) { | |
1813 | struct ovs_key_icmp *icmp_key; | |
1814 | ||
1815 | nla = nla_reserve(skb, OVS_KEY_ATTR_ICMP, sizeof(*icmp_key)); | |
1816 | if (!nla) | |
1817 | goto nla_put_failure; | |
1818 | icmp_key = nla_data(nla); | |
1139e241 JR |
1819 | icmp_key->icmp_type = ntohs(output->tp.src); |
1820 | icmp_key->icmp_code = ntohs(output->tp.dst); | |
e6445719 PS |
1821 | } else if (swkey->eth.type == htons(ETH_P_IPV6) && |
1822 | swkey->ip.proto == IPPROTO_ICMPV6) { | |
1823 | struct ovs_key_icmpv6 *icmpv6_key; | |
1824 | ||
1825 | nla = nla_reserve(skb, OVS_KEY_ATTR_ICMPV6, | |
1826 | sizeof(*icmpv6_key)); | |
1827 | if (!nla) | |
1828 | goto nla_put_failure; | |
1829 | icmpv6_key = nla_data(nla); | |
1139e241 JR |
1830 | icmpv6_key->icmpv6_type = ntohs(output->tp.src); |
1831 | icmpv6_key->icmpv6_code = ntohs(output->tp.dst); | |
e6445719 PS |
1832 | |
1833 | if (icmpv6_key->icmpv6_type == NDISC_NEIGHBOUR_SOLICITATION || | |
1834 | icmpv6_key->icmpv6_type == NDISC_NEIGHBOUR_ADVERTISEMENT) { | |
1835 | struct ovs_key_nd *nd_key; | |
1836 | ||
1837 | nla = nla_reserve(skb, OVS_KEY_ATTR_ND, sizeof(*nd_key)); | |
1838 | if (!nla) | |
1839 | goto nla_put_failure; | |
1840 | nd_key = nla_data(nla); | |
1841 | memcpy(nd_key->nd_target, &output->ipv6.nd.target, | |
1842 | sizeof(nd_key->nd_target)); | |
8c63ff09 JP |
1843 | ether_addr_copy(nd_key->nd_sll, output->ipv6.nd.sll); |
1844 | ether_addr_copy(nd_key->nd_tll, output->ipv6.nd.tll); | |
e6445719 PS |
1845 | } |
1846 | } | |
1847 | } | |
1848 | ||
1849 | unencap: | |
018c1dda EG |
1850 | if (in_encap) |
1851 | nla_nest_end(skb, in_encap); | |
e6445719 PS |
1852 | if (encap) |
1853 | nla_nest_end(skb, encap); | |
1854 | ||
1855 | return 0; | |
1856 | ||
1857 | nla_put_failure: | |
1858 | return -EMSGSIZE; | |
1859 | } | |
1860 | ||
5b4237bb JS |
1861 | int ovs_nla_put_key(const struct sw_flow_key *swkey, |
1862 | const struct sw_flow_key *output, int attr, bool is_mask, | |
1863 | struct sk_buff *skb) | |
1864 | { | |
1865 | int err; | |
1866 | struct nlattr *nla; | |
1867 | ||
1868 | nla = nla_nest_start(skb, attr); | |
1869 | if (!nla) | |
1870 | return -EMSGSIZE; | |
1871 | err = __ovs_nla_put_key(swkey, output, is_mask, skb); | |
1872 | if (err) | |
1873 | return err; | |
1874 | nla_nest_end(skb, nla); | |
1875 | ||
1876 | return 0; | |
1877 | } | |
1878 | ||
1879 | /* Called with ovs_mutex or RCU read lock. */ | |
74ed7ab9 JS |
1880 | int ovs_nla_put_identifier(const struct sw_flow *flow, struct sk_buff *skb) |
1881 | { | |
1882 | if (ovs_identifier_is_ufid(&flow->id)) | |
1883 | return nla_put(skb, OVS_FLOW_ATTR_UFID, flow->id.ufid_len, | |
1884 | flow->id.ufid); | |
1885 | ||
1886 | return ovs_nla_put_key(flow->id.unmasked_key, flow->id.unmasked_key, | |
1887 | OVS_FLOW_ATTR_KEY, false, skb); | |
1888 | } | |
1889 | ||
1890 | /* Called with ovs_mutex or RCU read lock. */ | |
1891 | int ovs_nla_put_masked_key(const struct sw_flow *flow, struct sk_buff *skb) | |
5b4237bb | 1892 | { |
26ad0b83 | 1893 | return ovs_nla_put_key(&flow->key, &flow->key, |
5b4237bb JS |
1894 | OVS_FLOW_ATTR_KEY, false, skb); |
1895 | } | |
1896 | ||
1897 | /* Called with ovs_mutex or RCU read lock. */ | |
1898 | int ovs_nla_put_mask(const struct sw_flow *flow, struct sk_buff *skb) | |
1899 | { | |
1900 | return ovs_nla_put_key(&flow->key, &flow->mask->key, | |
1901 | OVS_FLOW_ATTR_MASK, true, skb); | |
1902 | } | |
1903 | ||
e6445719 PS |
1904 | #define MAX_ACTIONS_BUFSIZE (32 * 1024) |
1905 | ||
05da5898 | 1906 | static struct sw_flow_actions *nla_alloc_flow_actions(int size, bool log) |
e6445719 PS |
1907 | { |
1908 | struct sw_flow_actions *sfa; | |
1909 | ||
426cda5c | 1910 | if (size > MAX_ACTIONS_BUFSIZE) { |
05da5898 | 1911 | OVS_NLERR(log, "Flow action size %u bytes exceeds max", size); |
e6445719 | 1912 | return ERR_PTR(-EINVAL); |
426cda5c | 1913 | } |
e6445719 PS |
1914 | |
1915 | sfa = kmalloc(sizeof(*sfa) + size, GFP_KERNEL); | |
1916 | if (!sfa) | |
1917 | return ERR_PTR(-ENOMEM); | |
1918 | ||
1919 | sfa->actions_len = 0; | |
1920 | return sfa; | |
1921 | } | |
1922 | ||
34ae932a TG |
1923 | static void ovs_nla_free_set_action(const struct nlattr *a) |
1924 | { | |
1925 | const struct nlattr *ovs_key = nla_data(a); | |
1926 | struct ovs_tunnel_info *ovs_tun; | |
1927 | ||
1928 | switch (nla_type(ovs_key)) { | |
1929 | case OVS_KEY_ATTR_TUNNEL_INFO: | |
1930 | ovs_tun = nla_data(ovs_key); | |
1931 | dst_release((struct dst_entry *)ovs_tun->tun_dst); | |
1932 | break; | |
1933 | } | |
1934 | } | |
1935 | ||
1936 | void ovs_nla_free_flow_actions(struct sw_flow_actions *sf_acts) | |
1937 | { | |
1938 | const struct nlattr *a; | |
1939 | int rem; | |
1940 | ||
1941 | if (!sf_acts) | |
1942 | return; | |
1943 | ||
1944 | nla_for_each_attr(a, sf_acts->actions, sf_acts->actions_len, rem) { | |
1945 | switch (nla_type(a)) { | |
1946 | case OVS_ACTION_ATTR_SET: | |
1947 | ovs_nla_free_set_action(a); | |
1948 | break; | |
7f8a436e JS |
1949 | case OVS_ACTION_ATTR_CT: |
1950 | ovs_ct_free_action(a); | |
1951 | break; | |
34ae932a TG |
1952 | } |
1953 | } | |
1954 | ||
1955 | kfree(sf_acts); | |
1956 | } | |
1957 | ||
1958 | static void __ovs_nla_free_flow_actions(struct rcu_head *head) | |
1959 | { | |
1960 | ovs_nla_free_flow_actions(container_of(head, struct sw_flow_actions, rcu)); | |
1961 | } | |
1962 | ||
e6445719 PS |
1963 | /* Schedules 'sf_acts' to be freed after the next RCU grace period. |
1964 | * The caller must hold rcu_read_lock for this to be sensible. */ | |
34ae932a | 1965 | void ovs_nla_free_flow_actions_rcu(struct sw_flow_actions *sf_acts) |
e6445719 | 1966 | { |
34ae932a | 1967 | call_rcu(&sf_acts->rcu, __ovs_nla_free_flow_actions); |
e6445719 PS |
1968 | } |
1969 | ||
1970 | static struct nlattr *reserve_sfa_size(struct sw_flow_actions **sfa, | |
05da5898 | 1971 | int attr_len, bool log) |
e6445719 PS |
1972 | { |
1973 | ||
1974 | struct sw_flow_actions *acts; | |
1975 | int new_acts_size; | |
1976 | int req_size = NLA_ALIGN(attr_len); | |
1977 | int next_offset = offsetof(struct sw_flow_actions, actions) + | |
1978 | (*sfa)->actions_len; | |
1979 | ||
1980 | if (req_size <= (ksize(*sfa) - next_offset)) | |
1981 | goto out; | |
1982 | ||
1983 | new_acts_size = ksize(*sfa) * 2; | |
1984 | ||
1985 | if (new_acts_size > MAX_ACTIONS_BUFSIZE) { | |
1986 | if ((MAX_ACTIONS_BUFSIZE - next_offset) < req_size) | |
1987 | return ERR_PTR(-EMSGSIZE); | |
1988 | new_acts_size = MAX_ACTIONS_BUFSIZE; | |
1989 | } | |
1990 | ||
05da5898 | 1991 | acts = nla_alloc_flow_actions(new_acts_size, log); |
e6445719 PS |
1992 | if (IS_ERR(acts)) |
1993 | return (void *)acts; | |
1994 | ||
1995 | memcpy(acts->actions, (*sfa)->actions, (*sfa)->actions_len); | |
1996 | acts->actions_len = (*sfa)->actions_len; | |
8e2fed1c | 1997 | acts->orig_len = (*sfa)->orig_len; |
e6445719 PS |
1998 | kfree(*sfa); |
1999 | *sfa = acts; | |
2000 | ||
2001 | out: | |
2002 | (*sfa)->actions_len += req_size; | |
2003 | return (struct nlattr *) ((unsigned char *)(*sfa) + next_offset); | |
2004 | } | |
2005 | ||
f0b128c1 | 2006 | static struct nlattr *__add_action(struct sw_flow_actions **sfa, |
05da5898 | 2007 | int attrtype, void *data, int len, bool log) |
e6445719 PS |
2008 | { |
2009 | struct nlattr *a; | |
2010 | ||
05da5898 | 2011 | a = reserve_sfa_size(sfa, nla_attr_size(len), log); |
e6445719 | 2012 | if (IS_ERR(a)) |
f0b128c1 | 2013 | return a; |
e6445719 PS |
2014 | |
2015 | a->nla_type = attrtype; | |
2016 | a->nla_len = nla_attr_size(len); | |
2017 | ||
2018 | if (data) | |
2019 | memcpy(nla_data(a), data, len); | |
2020 | memset((unsigned char *) a + a->nla_len, 0, nla_padlen(len)); | |
2021 | ||
f0b128c1 JG |
2022 | return a; |
2023 | } | |
2024 | ||
7f8a436e JS |
2025 | int ovs_nla_add_action(struct sw_flow_actions **sfa, int attrtype, void *data, |
2026 | int len, bool log) | |
f0b128c1 JG |
2027 | { |
2028 | struct nlattr *a; | |
2029 | ||
05da5898 | 2030 | a = __add_action(sfa, attrtype, data, len, log); |
f0b128c1 | 2031 | |
f35423c1 | 2032 | return PTR_ERR_OR_ZERO(a); |
e6445719 PS |
2033 | } |
2034 | ||
2035 | static inline int add_nested_action_start(struct sw_flow_actions **sfa, | |
05da5898 | 2036 | int attrtype, bool log) |
e6445719 PS |
2037 | { |
2038 | int used = (*sfa)->actions_len; | |
2039 | int err; | |
2040 | ||
7f8a436e | 2041 | err = ovs_nla_add_action(sfa, attrtype, NULL, 0, log); |
e6445719 PS |
2042 | if (err) |
2043 | return err; | |
2044 | ||
2045 | return used; | |
2046 | } | |
2047 | ||
2048 | static inline void add_nested_action_end(struct sw_flow_actions *sfa, | |
2049 | int st_offset) | |
2050 | { | |
2051 | struct nlattr *a = (struct nlattr *) ((unsigned char *)sfa->actions + | |
2052 | st_offset); | |
2053 | ||
2054 | a->nla_len = sfa->actions_len - st_offset; | |
2055 | } | |
2056 | ||
7f8a436e | 2057 | static int __ovs_nla_copy_actions(struct net *net, const struct nlattr *attr, |
25cd9ba0 | 2058 | const struct sw_flow_key *key, |
798c1661 | 2059 | struct sw_flow_actions **sfa, |
05da5898 | 2060 | __be16 eth_type, __be16 vlan_tci, bool log); |
25cd9ba0 | 2061 | |
7f8a436e | 2062 | static int validate_and_copy_sample(struct net *net, const struct nlattr *attr, |
798c1661 | 2063 | const struct sw_flow_key *key, |
25cd9ba0 | 2064 | struct sw_flow_actions **sfa, |
798c1661 | 2065 | __be16 eth_type, __be16 vlan_tci, |
2066 | bool log, bool last) | |
e6445719 PS |
2067 | { |
2068 | const struct nlattr *attrs[OVS_SAMPLE_ATTR_MAX + 1]; | |
2069 | const struct nlattr *probability, *actions; | |
2070 | const struct nlattr *a; | |
798c1661 | 2071 | int rem, start, err; |
2072 | struct sample_arg arg; | |
e6445719 PS |
2073 | |
2074 | memset(attrs, 0, sizeof(attrs)); | |
2075 | nla_for_each_nested(a, attr, rem) { | |
2076 | int type = nla_type(a); | |
2077 | if (!type || type > OVS_SAMPLE_ATTR_MAX || attrs[type]) | |
2078 | return -EINVAL; | |
2079 | attrs[type] = a; | |
2080 | } | |
2081 | if (rem) | |
2082 | return -EINVAL; | |
2083 | ||
2084 | probability = attrs[OVS_SAMPLE_ATTR_PROBABILITY]; | |
2085 | if (!probability || nla_len(probability) != sizeof(u32)) | |
2086 | return -EINVAL; | |
2087 | ||
2088 | actions = attrs[OVS_SAMPLE_ATTR_ACTIONS]; | |
2089 | if (!actions || (nla_len(actions) && nla_len(actions) < NLA_HDRLEN)) | |
2090 | return -EINVAL; | |
2091 | ||
2092 | /* validation done, copy sample action. */ | |
05da5898 | 2093 | start = add_nested_action_start(sfa, OVS_ACTION_ATTR_SAMPLE, log); |
e6445719 PS |
2094 | if (start < 0) |
2095 | return start; | |
798c1661 | 2096 | |
2097 | /* When both skb and flow may be changed, put the sample | |
2098 | * into a deferred fifo. On the other hand, if only skb | |
2099 | * may be modified, the actions can be executed in place. | |
2100 | * | |
2101 | * Do this analysis at the flow installation time. | |
2102 | * Set 'clone_action->exec' to true if the actions can be | |
2103 | * executed without being deferred. | |
2104 | * | |
2105 | * If the sample is the last action, it can always be excuted | |
2106 | * rather than deferred. | |
2107 | */ | |
2108 | arg.exec = last || !actions_may_change_flow(actions); | |
2109 | arg.probability = nla_get_u32(probability); | |
2110 | ||
2111 | err = ovs_nla_add_action(sfa, OVS_SAMPLE_ATTR_ARG, &arg, sizeof(arg), | |
2112 | log); | |
e6445719 PS |
2113 | if (err) |
2114 | return err; | |
e6445719 | 2115 | |
798c1661 | 2116 | err = __ovs_nla_copy_actions(net, actions, key, sfa, |
05da5898 | 2117 | eth_type, vlan_tci, log); |
798c1661 | 2118 | |
e6445719 PS |
2119 | if (err) |
2120 | return err; | |
2121 | ||
e6445719 PS |
2122 | add_nested_action_end(*sfa, start); |
2123 | ||
2124 | return 0; | |
2125 | } | |
2126 | ||
e6445719 PS |
2127 | void ovs_match_init(struct sw_flow_match *match, |
2128 | struct sw_flow_key *key, | |
2279994d | 2129 | bool reset_key, |
e6445719 PS |
2130 | struct sw_flow_mask *mask) |
2131 | { | |
2132 | memset(match, 0, sizeof(*match)); | |
2133 | match->key = key; | |
2134 | match->mask = mask; | |
2135 | ||
2279994d | 2136 | if (reset_key) |
2137 | memset(key, 0, sizeof(*key)); | |
e6445719 PS |
2138 | |
2139 | if (mask) { | |
2140 | memset(&mask->key, 0, sizeof(mask->key)); | |
2141 | mask->range.start = mask->range.end = 0; | |
2142 | } | |
2143 | } | |
2144 | ||
d91641d9 TG |
2145 | static int validate_geneve_opts(struct sw_flow_key *key) |
2146 | { | |
2147 | struct geneve_opt *option; | |
2148 | int opts_len = key->tun_opts_len; | |
2149 | bool crit_opt = false; | |
2150 | ||
2151 | option = (struct geneve_opt *)TUN_METADATA_OPTS(key, key->tun_opts_len); | |
2152 | while (opts_len > 0) { | |
2153 | int len; | |
2154 | ||
2155 | if (opts_len < sizeof(*option)) | |
2156 | return -EINVAL; | |
2157 | ||
2158 | len = sizeof(*option) + option->length * 4; | |
2159 | if (len > opts_len) | |
2160 | return -EINVAL; | |
2161 | ||
2162 | crit_opt |= !!(option->type & GENEVE_CRIT_OPT_TYPE); | |
2163 | ||
2164 | option = (struct geneve_opt *)((u8 *)option + len); | |
2165 | opts_len -= len; | |
2166 | }; | |
2167 | ||
2168 | key->tun_key.tun_flags |= crit_opt ? TUNNEL_CRIT_OPT : 0; | |
2169 | ||
2170 | return 0; | |
2171 | } | |
2172 | ||
e6445719 | 2173 | static int validate_and_copy_set_tun(const struct nlattr *attr, |
05da5898 | 2174 | struct sw_flow_actions **sfa, bool log) |
e6445719 PS |
2175 | { |
2176 | struct sw_flow_match match; | |
2177 | struct sw_flow_key key; | |
34ae932a | 2178 | struct metadata_dst *tun_dst; |
1d8fff90 | 2179 | struct ip_tunnel_info *tun_info; |
34ae932a | 2180 | struct ovs_tunnel_info *ovs_tun; |
f0b128c1 | 2181 | struct nlattr *a; |
13101602 | 2182 | int err = 0, start, opts_type; |
e6445719 | 2183 | |
2279994d | 2184 | ovs_match_init(&match, &key, true, NULL); |
6b26ba3a | 2185 | opts_type = ip_tun_from_nlattr(nla_data(attr), &match, false, log); |
1dd144cf TG |
2186 | if (opts_type < 0) |
2187 | return opts_type; | |
e6445719 | 2188 | |
f5796684 | 2189 | if (key.tun_opts_len) { |
1dd144cf TG |
2190 | switch (opts_type) { |
2191 | case OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS: | |
2192 | err = validate_geneve_opts(&key); | |
2193 | if (err < 0) | |
2194 | return err; | |
2195 | break; | |
2196 | case OVS_TUNNEL_KEY_ATTR_VXLAN_OPTS: | |
2197 | break; | |
2198 | } | |
f5796684 JG |
2199 | }; |
2200 | ||
05da5898 | 2201 | start = add_nested_action_start(sfa, OVS_ACTION_ATTR_SET, log); |
e6445719 PS |
2202 | if (start < 0) |
2203 | return start; | |
2204 | ||
3fcece12 JK |
2205 | tun_dst = metadata_dst_alloc(key.tun_opts_len, METADATA_IP_TUNNEL, |
2206 | GFP_KERNEL); | |
2207 | ||
34ae932a TG |
2208 | if (!tun_dst) |
2209 | return -ENOMEM; | |
2210 | ||
d71785ff PA |
2211 | err = dst_cache_init(&tun_dst->u.tun_info.dst_cache, GFP_KERNEL); |
2212 | if (err) { | |
2213 | dst_release((struct dst_entry *)tun_dst); | |
2214 | return err; | |
2215 | } | |
2216 | ||
f0b128c1 | 2217 | a = __add_action(sfa, OVS_KEY_ATTR_TUNNEL_INFO, NULL, |
34ae932a TG |
2218 | sizeof(*ovs_tun), log); |
2219 | if (IS_ERR(a)) { | |
2220 | dst_release((struct dst_entry *)tun_dst); | |
f0b128c1 | 2221 | return PTR_ERR(a); |
34ae932a TG |
2222 | } |
2223 | ||
2224 | ovs_tun = nla_data(a); | |
2225 | ovs_tun->tun_dst = tun_dst; | |
f0b128c1 | 2226 | |
34ae932a TG |
2227 | tun_info = &tun_dst->u.tun_info; |
2228 | tun_info->mode = IP_TUNNEL_INFO_TX; | |
00a93bab JB |
2229 | if (key.tun_proto == AF_INET6) |
2230 | tun_info->mode |= IP_TUNNEL_INFO_IPV6; | |
1d8fff90 | 2231 | tun_info->key = key.tun_key; |
f0b128c1 | 2232 | |
4c222798 PS |
2233 | /* We need to store the options in the action itself since |
2234 | * everything else will go away after flow setup. We can append | |
2235 | * it to tun_info and then point there. | |
2236 | */ | |
2237 | ip_tunnel_info_opts_set(tun_info, | |
2238 | TUN_METADATA_OPTS(&key, key.tun_opts_len), | |
2239 | key.tun_opts_len); | |
e6445719 PS |
2240 | add_nested_action_end(*sfa, start); |
2241 | ||
2242 | return err; | |
2243 | } | |
2244 | ||
83d2b9ba JR |
2245 | /* Return false if there are any non-masked bits set. |
2246 | * Mask follows data immediately, before any netlink padding. | |
2247 | */ | |
2248 | static bool validate_masked(u8 *data, int len) | |
2249 | { | |
2250 | u8 *mask = data + len; | |
2251 | ||
2252 | while (len--) | |
2253 | if (*data++ & ~*mask++) | |
2254 | return false; | |
2255 | ||
2256 | return true; | |
2257 | } | |
2258 | ||
e6445719 PS |
2259 | static int validate_set(const struct nlattr *a, |
2260 | const struct sw_flow_key *flow_key, | |
0a6410fb JB |
2261 | struct sw_flow_actions **sfa, bool *skip_copy, |
2262 | u8 mac_proto, __be16 eth_type, bool masked, bool log) | |
e6445719 PS |
2263 | { |
2264 | const struct nlattr *ovs_key = nla_data(a); | |
2265 | int key_type = nla_type(ovs_key); | |
83d2b9ba | 2266 | size_t key_len; |
e6445719 PS |
2267 | |
2268 | /* There can be only one key in a action */ | |
2269 | if (nla_total_size(nla_len(ovs_key)) != nla_len(a)) | |
2270 | return -EINVAL; | |
2271 | ||
83d2b9ba JR |
2272 | key_len = nla_len(ovs_key); |
2273 | if (masked) | |
2274 | key_len /= 2; | |
2275 | ||
e6445719 | 2276 | if (key_type > OVS_KEY_ATTR_MAX || |
982b5270 | 2277 | !check_attr_len(key_len, ovs_key_lens[key_type].len)) |
e6445719 PS |
2278 | return -EINVAL; |
2279 | ||
83d2b9ba JR |
2280 | if (masked && !validate_masked(nla_data(ovs_key), key_len)) |
2281 | return -EINVAL; | |
2282 | ||
e6445719 PS |
2283 | switch (key_type) { |
2284 | const struct ovs_key_ipv4 *ipv4_key; | |
2285 | const struct ovs_key_ipv6 *ipv6_key; | |
2286 | int err; | |
2287 | ||
2288 | case OVS_KEY_ATTR_PRIORITY: | |
2289 | case OVS_KEY_ATTR_SKB_MARK: | |
182e3042 | 2290 | case OVS_KEY_ATTR_CT_MARK: |
33db4125 | 2291 | case OVS_KEY_ATTR_CT_LABELS: |
e6445719 PS |
2292 | break; |
2293 | ||
0a6410fb JB |
2294 | case OVS_KEY_ATTR_ETHERNET: |
2295 | if (mac_proto != MAC_PROTO_ETHERNET) | |
2296 | return -EINVAL; | |
87e159c5 | 2297 | break; |
0a6410fb | 2298 | |
e6445719 | 2299 | case OVS_KEY_ATTR_TUNNEL: |
83d2b9ba JR |
2300 | if (masked) |
2301 | return -EINVAL; /* Masked tunnel set not supported. */ | |
2302 | ||
2303 | *skip_copy = true; | |
05da5898 | 2304 | err = validate_and_copy_set_tun(a, sfa, log); |
e6445719 PS |
2305 | if (err) |
2306 | return err; | |
2307 | break; | |
2308 | ||
2309 | case OVS_KEY_ATTR_IPV4: | |
25cd9ba0 | 2310 | if (eth_type != htons(ETH_P_IP)) |
e6445719 PS |
2311 | return -EINVAL; |
2312 | ||
e6445719 | 2313 | ipv4_key = nla_data(ovs_key); |
e6445719 | 2314 | |
83d2b9ba JR |
2315 | if (masked) { |
2316 | const struct ovs_key_ipv4 *mask = ipv4_key + 1; | |
e6445719 | 2317 | |
83d2b9ba JR |
2318 | /* Non-writeable fields. */ |
2319 | if (mask->ipv4_proto || mask->ipv4_frag) | |
2320 | return -EINVAL; | |
2321 | } else { | |
2322 | if (ipv4_key->ipv4_proto != flow_key->ip.proto) | |
2323 | return -EINVAL; | |
2324 | ||
2325 | if (ipv4_key->ipv4_frag != flow_key->ip.frag) | |
2326 | return -EINVAL; | |
2327 | } | |
e6445719 PS |
2328 | break; |
2329 | ||
2330 | case OVS_KEY_ATTR_IPV6: | |
25cd9ba0 | 2331 | if (eth_type != htons(ETH_P_IPV6)) |
e6445719 PS |
2332 | return -EINVAL; |
2333 | ||
e6445719 | 2334 | ipv6_key = nla_data(ovs_key); |
e6445719 | 2335 | |
83d2b9ba JR |
2336 | if (masked) { |
2337 | const struct ovs_key_ipv6 *mask = ipv6_key + 1; | |
2338 | ||
2339 | /* Non-writeable fields. */ | |
2340 | if (mask->ipv6_proto || mask->ipv6_frag) | |
2341 | return -EINVAL; | |
2342 | ||
2343 | /* Invalid bits in the flow label mask? */ | |
2344 | if (ntohl(mask->ipv6_label) & 0xFFF00000) | |
2345 | return -EINVAL; | |
2346 | } else { | |
2347 | if (ipv6_key->ipv6_proto != flow_key->ip.proto) | |
2348 | return -EINVAL; | |
e6445719 | 2349 | |
83d2b9ba JR |
2350 | if (ipv6_key->ipv6_frag != flow_key->ip.frag) |
2351 | return -EINVAL; | |
2352 | } | |
e6445719 PS |
2353 | if (ntohl(ipv6_key->ipv6_label) & 0xFFF00000) |
2354 | return -EINVAL; | |
2355 | ||
2356 | break; | |
2357 | ||
2358 | case OVS_KEY_ATTR_TCP: | |
83d2b9ba JR |
2359 | if ((eth_type != htons(ETH_P_IP) && |
2360 | eth_type != htons(ETH_P_IPV6)) || | |
2361 | flow_key->ip.proto != IPPROTO_TCP) | |
e6445719 PS |
2362 | return -EINVAL; |
2363 | ||
83d2b9ba | 2364 | break; |
e6445719 PS |
2365 | |
2366 | case OVS_KEY_ATTR_UDP: | |
83d2b9ba JR |
2367 | if ((eth_type != htons(ETH_P_IP) && |
2368 | eth_type != htons(ETH_P_IPV6)) || | |
2369 | flow_key->ip.proto != IPPROTO_UDP) | |
e6445719 PS |
2370 | return -EINVAL; |
2371 | ||
83d2b9ba | 2372 | break; |
25cd9ba0 SH |
2373 | |
2374 | case OVS_KEY_ATTR_MPLS: | |
2375 | if (!eth_p_mpls(eth_type)) | |
2376 | return -EINVAL; | |
2377 | break; | |
e6445719 PS |
2378 | |
2379 | case OVS_KEY_ATTR_SCTP: | |
83d2b9ba JR |
2380 | if ((eth_type != htons(ETH_P_IP) && |
2381 | eth_type != htons(ETH_P_IPV6)) || | |
2382 | flow_key->ip.proto != IPPROTO_SCTP) | |
e6445719 PS |
2383 | return -EINVAL; |
2384 | ||
83d2b9ba | 2385 | break; |
e6445719 PS |
2386 | |
2387 | default: | |
2388 | return -EINVAL; | |
2389 | } | |
2390 | ||
83d2b9ba JR |
2391 | /* Convert non-masked non-tunnel set actions to masked set actions. */ |
2392 | if (!masked && key_type != OVS_KEY_ATTR_TUNNEL) { | |
2393 | int start, len = key_len * 2; | |
2394 | struct nlattr *at; | |
2395 | ||
2396 | *skip_copy = true; | |
2397 | ||
2398 | start = add_nested_action_start(sfa, | |
2399 | OVS_ACTION_ATTR_SET_TO_MASKED, | |
2400 | log); | |
2401 | if (start < 0) | |
2402 | return start; | |
2403 | ||
2404 | at = __add_action(sfa, key_type, NULL, len, log); | |
2405 | if (IS_ERR(at)) | |
2406 | return PTR_ERR(at); | |
2407 | ||
2408 | memcpy(nla_data(at), nla_data(ovs_key), key_len); /* Key. */ | |
2409 | memset(nla_data(at) + key_len, 0xff, key_len); /* Mask. */ | |
2410 | /* Clear non-writeable bits from otherwise writeable fields. */ | |
2411 | if (key_type == OVS_KEY_ATTR_IPV6) { | |
2412 | struct ovs_key_ipv6 *mask = nla_data(at) + key_len; | |
2413 | ||
2414 | mask->ipv6_label &= htonl(0x000FFFFF); | |
2415 | } | |
2416 | add_nested_action_end(*sfa, start); | |
2417 | } | |
2418 | ||
e6445719 PS |
2419 | return 0; |
2420 | } | |
2421 | ||
2422 | static int validate_userspace(const struct nlattr *attr) | |
2423 | { | |
2424 | static const struct nla_policy userspace_policy[OVS_USERSPACE_ATTR_MAX + 1] = { | |
2425 | [OVS_USERSPACE_ATTR_PID] = {.type = NLA_U32 }, | |
2426 | [OVS_USERSPACE_ATTR_USERDATA] = {.type = NLA_UNSPEC }, | |
8f0aad6f | 2427 | [OVS_USERSPACE_ATTR_EGRESS_TUN_PORT] = {.type = NLA_U32 }, |
e6445719 PS |
2428 | }; |
2429 | struct nlattr *a[OVS_USERSPACE_ATTR_MAX + 1]; | |
2430 | int error; | |
2431 | ||
fceb6435 JB |
2432 | error = nla_parse_nested(a, OVS_USERSPACE_ATTR_MAX, attr, |
2433 | userspace_policy, NULL); | |
e6445719 PS |
2434 | if (error) |
2435 | return error; | |
2436 | ||
2437 | if (!a[OVS_USERSPACE_ATTR_PID] || | |
2438 | !nla_get_u32(a[OVS_USERSPACE_ATTR_PID])) | |
2439 | return -EINVAL; | |
2440 | ||
2441 | return 0; | |
2442 | } | |
2443 | ||
2444 | static int copy_action(const struct nlattr *from, | |
05da5898 | 2445 | struct sw_flow_actions **sfa, bool log) |
e6445719 PS |
2446 | { |
2447 | int totlen = NLA_ALIGN(from->nla_len); | |
2448 | struct nlattr *to; | |
2449 | ||
05da5898 | 2450 | to = reserve_sfa_size(sfa, from->nla_len, log); |
e6445719 PS |
2451 | if (IS_ERR(to)) |
2452 | return PTR_ERR(to); | |
2453 | ||
2454 | memcpy(to, from, totlen); | |
2455 | return 0; | |
2456 | } | |
2457 | ||
7f8a436e | 2458 | static int __ovs_nla_copy_actions(struct net *net, const struct nlattr *attr, |
25cd9ba0 | 2459 | const struct sw_flow_key *key, |
798c1661 | 2460 | struct sw_flow_actions **sfa, |
05da5898 | 2461 | __be16 eth_type, __be16 vlan_tci, bool log) |
e6445719 | 2462 | { |
0a6410fb | 2463 | u8 mac_proto = ovs_key_mac_proto(key); |
e6445719 PS |
2464 | const struct nlattr *a; |
2465 | int rem, err; | |
2466 | ||
e6445719 PS |
2467 | nla_for_each_nested(a, attr, rem) { |
2468 | /* Expected argument lengths, (u32)-1 for variable length. */ | |
2469 | static const u32 action_lens[OVS_ACTION_ATTR_MAX + 1] = { | |
2470 | [OVS_ACTION_ATTR_OUTPUT] = sizeof(u32), | |
971427f3 | 2471 | [OVS_ACTION_ATTR_RECIRC] = sizeof(u32), |
e6445719 | 2472 | [OVS_ACTION_ATTR_USERSPACE] = (u32)-1, |
25cd9ba0 SH |
2473 | [OVS_ACTION_ATTR_PUSH_MPLS] = sizeof(struct ovs_action_push_mpls), |
2474 | [OVS_ACTION_ATTR_POP_MPLS] = sizeof(__be16), | |
e6445719 PS |
2475 | [OVS_ACTION_ATTR_PUSH_VLAN] = sizeof(struct ovs_action_push_vlan), |
2476 | [OVS_ACTION_ATTR_POP_VLAN] = 0, | |
2477 | [OVS_ACTION_ATTR_SET] = (u32)-1, | |
83d2b9ba | 2478 | [OVS_ACTION_ATTR_SET_MASKED] = (u32)-1, |
971427f3 | 2479 | [OVS_ACTION_ATTR_SAMPLE] = (u32)-1, |
7f8a436e JS |
2480 | [OVS_ACTION_ATTR_HASH] = sizeof(struct ovs_action_hash), |
2481 | [OVS_ACTION_ATTR_CT] = (u32)-1, | |
f2a4d086 | 2482 | [OVS_ACTION_ATTR_TRUNC] = sizeof(struct ovs_action_trunc), |
91820da6 JB |
2483 | [OVS_ACTION_ATTR_PUSH_ETH] = sizeof(struct ovs_action_push_eth), |
2484 | [OVS_ACTION_ATTR_POP_ETH] = 0, | |
e6445719 PS |
2485 | }; |
2486 | const struct ovs_action_push_vlan *vlan; | |
2487 | int type = nla_type(a); | |
2488 | bool skip_copy; | |
2489 | ||
2490 | if (type > OVS_ACTION_ATTR_MAX || | |
2491 | (action_lens[type] != nla_len(a) && | |
2492 | action_lens[type] != (u32)-1)) | |
2493 | return -EINVAL; | |
2494 | ||
2495 | skip_copy = false; | |
2496 | switch (type) { | |
2497 | case OVS_ACTION_ATTR_UNSPEC: | |
2498 | return -EINVAL; | |
2499 | ||
2500 | case OVS_ACTION_ATTR_USERSPACE: | |
2501 | err = validate_userspace(a); | |
2502 | if (err) | |
2503 | return err; | |
2504 | break; | |
2505 | ||
2506 | case OVS_ACTION_ATTR_OUTPUT: | |
2507 | if (nla_get_u32(a) >= DP_MAX_PORTS) | |
2508 | return -EINVAL; | |
2509 | break; | |
2510 | ||
f2a4d086 WT |
2511 | case OVS_ACTION_ATTR_TRUNC: { |
2512 | const struct ovs_action_trunc *trunc = nla_data(a); | |
2513 | ||
2514 | if (trunc->max_len < ETH_HLEN) | |
2515 | return -EINVAL; | |
2516 | break; | |
2517 | } | |
2518 | ||
971427f3 AZ |
2519 | case OVS_ACTION_ATTR_HASH: { |
2520 | const struct ovs_action_hash *act_hash = nla_data(a); | |
2521 | ||
2522 | switch (act_hash->hash_alg) { | |
2523 | case OVS_HASH_ALG_L4: | |
2524 | break; | |
2525 | default: | |
2526 | return -EINVAL; | |
2527 | } | |
2528 | ||
2529 | break; | |
2530 | } | |
e6445719 PS |
2531 | |
2532 | case OVS_ACTION_ATTR_POP_VLAN: | |
0a6410fb JB |
2533 | if (mac_proto != MAC_PROTO_ETHERNET) |
2534 | return -EINVAL; | |
25cd9ba0 | 2535 | vlan_tci = htons(0); |
e6445719 PS |
2536 | break; |
2537 | ||
2538 | case OVS_ACTION_ATTR_PUSH_VLAN: | |
0a6410fb JB |
2539 | if (mac_proto != MAC_PROTO_ETHERNET) |
2540 | return -EINVAL; | |
e6445719 | 2541 | vlan = nla_data(a); |
018c1dda | 2542 | if (!eth_type_vlan(vlan->vlan_tpid)) |
e6445719 PS |
2543 | return -EINVAL; |
2544 | if (!(vlan->vlan_tci & htons(VLAN_TAG_PRESENT))) | |
2545 | return -EINVAL; | |
25cd9ba0 | 2546 | vlan_tci = vlan->vlan_tci; |
e6445719 PS |
2547 | break; |
2548 | ||
971427f3 AZ |
2549 | case OVS_ACTION_ATTR_RECIRC: |
2550 | break; | |
2551 | ||
25cd9ba0 SH |
2552 | case OVS_ACTION_ATTR_PUSH_MPLS: { |
2553 | const struct ovs_action_push_mpls *mpls = nla_data(a); | |
2554 | ||
25cd9ba0 SH |
2555 | if (!eth_p_mpls(mpls->mpls_ethertype)) |
2556 | return -EINVAL; | |
2557 | /* Prohibit push MPLS other than to a white list | |
2558 | * for packets that have a known tag order. | |
2559 | */ | |
2560 | if (vlan_tci & htons(VLAN_TAG_PRESENT) || | |
2561 | (eth_type != htons(ETH_P_IP) && | |
2562 | eth_type != htons(ETH_P_IPV6) && | |
2563 | eth_type != htons(ETH_P_ARP) && | |
2564 | eth_type != htons(ETH_P_RARP) && | |
2565 | !eth_p_mpls(eth_type))) | |
2566 | return -EINVAL; | |
2567 | eth_type = mpls->mpls_ethertype; | |
2568 | break; | |
2569 | } | |
2570 | ||
2571 | case OVS_ACTION_ATTR_POP_MPLS: | |
2572 | if (vlan_tci & htons(VLAN_TAG_PRESENT) || | |
2573 | !eth_p_mpls(eth_type)) | |
2574 | return -EINVAL; | |
2575 | ||
2576 | /* Disallow subsequent L2.5+ set and mpls_pop actions | |
2577 | * as there is no check here to ensure that the new | |
2578 | * eth_type is valid and thus set actions could | |
2579 | * write off the end of the packet or otherwise | |
2580 | * corrupt it. | |
2581 | * | |
2582 | * Support for these actions is planned using packet | |
2583 | * recirculation. | |
2584 | */ | |
2585 | eth_type = htons(0); | |
2586 | break; | |
2587 | ||
e6445719 | 2588 | case OVS_ACTION_ATTR_SET: |
25cd9ba0 | 2589 | err = validate_set(a, key, sfa, |
0a6410fb JB |
2590 | &skip_copy, mac_proto, eth_type, |
2591 | false, log); | |
83d2b9ba JR |
2592 | if (err) |
2593 | return err; | |
2594 | break; | |
2595 | ||
2596 | case OVS_ACTION_ATTR_SET_MASKED: | |
2597 | err = validate_set(a, key, sfa, | |
0a6410fb JB |
2598 | &skip_copy, mac_proto, eth_type, |
2599 | true, log); | |
e6445719 PS |
2600 | if (err) |
2601 | return err; | |
2602 | break; | |
2603 | ||
798c1661 | 2604 | case OVS_ACTION_ATTR_SAMPLE: { |
2605 | bool last = nla_is_last(a, rem); | |
2606 | ||
2607 | err = validate_and_copy_sample(net, a, key, sfa, | |
2608 | eth_type, vlan_tci, | |
2609 | log, last); | |
e6445719 PS |
2610 | if (err) |
2611 | return err; | |
2612 | skip_copy = true; | |
2613 | break; | |
798c1661 | 2614 | } |
e6445719 | 2615 | |
7f8a436e JS |
2616 | case OVS_ACTION_ATTR_CT: |
2617 | err = ovs_ct_copy_action(net, a, key, sfa, log); | |
2618 | if (err) | |
2619 | return err; | |
2620 | skip_copy = true; | |
2621 | break; | |
2622 | ||
91820da6 JB |
2623 | case OVS_ACTION_ATTR_PUSH_ETH: |
2624 | /* Disallow pushing an Ethernet header if one | |
2625 | * is already present */ | |
2626 | if (mac_proto != MAC_PROTO_NONE) | |
2627 | return -EINVAL; | |
2628 | mac_proto = MAC_PROTO_NONE; | |
2629 | break; | |
2630 | ||
2631 | case OVS_ACTION_ATTR_POP_ETH: | |
2632 | if (mac_proto != MAC_PROTO_ETHERNET) | |
2633 | return -EINVAL; | |
2634 | if (vlan_tci & htons(VLAN_TAG_PRESENT)) | |
2635 | return -EINVAL; | |
2636 | mac_proto = MAC_PROTO_ETHERNET; | |
2637 | break; | |
2638 | ||
e6445719 | 2639 | default: |
05da5898 | 2640 | OVS_NLERR(log, "Unknown Action type %d", type); |
e6445719 PS |
2641 | return -EINVAL; |
2642 | } | |
2643 | if (!skip_copy) { | |
05da5898 | 2644 | err = copy_action(a, sfa, log); |
e6445719 PS |
2645 | if (err) |
2646 | return err; | |
2647 | } | |
2648 | } | |
2649 | ||
2650 | if (rem > 0) | |
2651 | return -EINVAL; | |
2652 | ||
2653 | return 0; | |
2654 | } | |
2655 | ||
83d2b9ba | 2656 | /* 'key' must be the masked key. */ |
7f8a436e | 2657 | int ovs_nla_copy_actions(struct net *net, const struct nlattr *attr, |
25cd9ba0 | 2658 | const struct sw_flow_key *key, |
05da5898 | 2659 | struct sw_flow_actions **sfa, bool log) |
25cd9ba0 | 2660 | { |
2fdb957d PS |
2661 | int err; |
2662 | ||
05da5898 | 2663 | *sfa = nla_alloc_flow_actions(nla_len(attr), log); |
2fdb957d PS |
2664 | if (IS_ERR(*sfa)) |
2665 | return PTR_ERR(*sfa); | |
2666 | ||
8e2fed1c | 2667 | (*sfa)->orig_len = nla_len(attr); |
798c1661 | 2668 | err = __ovs_nla_copy_actions(net, attr, key, sfa, key->eth.type, |
018c1dda | 2669 | key->eth.vlan.tci, log); |
2fdb957d | 2670 | if (err) |
34ae932a | 2671 | ovs_nla_free_flow_actions(*sfa); |
2fdb957d PS |
2672 | |
2673 | return err; | |
25cd9ba0 SH |
2674 | } |
2675 | ||
798c1661 | 2676 | static int sample_action_to_attr(const struct nlattr *attr, |
2677 | struct sk_buff *skb) | |
e6445719 | 2678 | { |
798c1661 | 2679 | struct nlattr *start, *ac_start = NULL, *sample_arg; |
2680 | int err = 0, rem = nla_len(attr); | |
2681 | const struct sample_arg *arg; | |
2682 | struct nlattr *actions; | |
e6445719 PS |
2683 | |
2684 | start = nla_nest_start(skb, OVS_ACTION_ATTR_SAMPLE); | |
2685 | if (!start) | |
2686 | return -EMSGSIZE; | |
2687 | ||
798c1661 | 2688 | sample_arg = nla_data(attr); |
2689 | arg = nla_data(sample_arg); | |
2690 | actions = nla_next(sample_arg, &rem); | |
e6445719 | 2691 | |
798c1661 | 2692 | if (nla_put_u32(skb, OVS_SAMPLE_ATTR_PROBABILITY, arg->probability)) { |
2693 | err = -EMSGSIZE; | |
2694 | goto out; | |
2695 | } | |
2696 | ||
2697 | ac_start = nla_nest_start(skb, OVS_SAMPLE_ATTR_ACTIONS); | |
2698 | if (!ac_start) { | |
2699 | err = -EMSGSIZE; | |
2700 | goto out; | |
2701 | } | |
2702 | ||
2703 | err = ovs_nla_put_actions(actions, rem, skb); | |
2704 | ||
2705 | out: | |
2706 | if (err) { | |
2707 | nla_nest_cancel(skb, ac_start); | |
2708 | nla_nest_cancel(skb, start); | |
2709 | } else { | |
2710 | nla_nest_end(skb, ac_start); | |
2711 | nla_nest_end(skb, start); | |
e6445719 PS |
2712 | } |
2713 | ||
e6445719 PS |
2714 | return err; |
2715 | } | |
2716 | ||
2717 | static int set_action_to_attr(const struct nlattr *a, struct sk_buff *skb) | |
2718 | { | |
2719 | const struct nlattr *ovs_key = nla_data(a); | |
2720 | int key_type = nla_type(ovs_key); | |
2721 | struct nlattr *start; | |
2722 | int err; | |
2723 | ||
2724 | switch (key_type) { | |
f0b128c1 | 2725 | case OVS_KEY_ATTR_TUNNEL_INFO: { |
34ae932a TG |
2726 | struct ovs_tunnel_info *ovs_tun = nla_data(ovs_key); |
2727 | struct ip_tunnel_info *tun_info = &ovs_tun->tun_dst->u.tun_info; | |
f0b128c1 | 2728 | |
e6445719 PS |
2729 | start = nla_nest_start(skb, OVS_ACTION_ATTR_SET); |
2730 | if (!start) | |
2731 | return -EMSGSIZE; | |
2732 | ||
e905eabc SH |
2733 | err = ip_tun_to_nlattr(skb, &tun_info->key, |
2734 | ip_tunnel_info_opts(tun_info), | |
2735 | tun_info->options_len, | |
2736 | ip_tunnel_info_af(tun_info)); | |
e6445719 PS |
2737 | if (err) |
2738 | return err; | |
2739 | nla_nest_end(skb, start); | |
2740 | break; | |
f0b128c1 | 2741 | } |
e6445719 PS |
2742 | default: |
2743 | if (nla_put(skb, OVS_ACTION_ATTR_SET, nla_len(a), ovs_key)) | |
2744 | return -EMSGSIZE; | |
2745 | break; | |
2746 | } | |
2747 | ||
2748 | return 0; | |
2749 | } | |
2750 | ||
83d2b9ba JR |
2751 | static int masked_set_action_to_set_action_attr(const struct nlattr *a, |
2752 | struct sk_buff *skb) | |
2753 | { | |
2754 | const struct nlattr *ovs_key = nla_data(a); | |
f4f8e738 | 2755 | struct nlattr *nla; |
83d2b9ba JR |
2756 | size_t key_len = nla_len(ovs_key) / 2; |
2757 | ||
2758 | /* Revert the conversion we did from a non-masked set action to | |
2759 | * masked set action. | |
2760 | */ | |
f4f8e738 JS |
2761 | nla = nla_nest_start(skb, OVS_ACTION_ATTR_SET); |
2762 | if (!nla) | |
83d2b9ba JR |
2763 | return -EMSGSIZE; |
2764 | ||
f4f8e738 JS |
2765 | if (nla_put(skb, nla_type(ovs_key), key_len, nla_data(ovs_key))) |
2766 | return -EMSGSIZE; | |
2767 | ||
2768 | nla_nest_end(skb, nla); | |
83d2b9ba JR |
2769 | return 0; |
2770 | } | |
2771 | ||
e6445719 PS |
2772 | int ovs_nla_put_actions(const struct nlattr *attr, int len, struct sk_buff *skb) |
2773 | { | |
2774 | const struct nlattr *a; | |
2775 | int rem, err; | |
2776 | ||
2777 | nla_for_each_attr(a, attr, len, rem) { | |
2778 | int type = nla_type(a); | |
2779 | ||
2780 | switch (type) { | |
2781 | case OVS_ACTION_ATTR_SET: | |
2782 | err = set_action_to_attr(a, skb); | |
2783 | if (err) | |
2784 | return err; | |
2785 | break; | |
2786 | ||
83d2b9ba JR |
2787 | case OVS_ACTION_ATTR_SET_TO_MASKED: |
2788 | err = masked_set_action_to_set_action_attr(a, skb); | |
2789 | if (err) | |
2790 | return err; | |
2791 | break; | |
2792 | ||
e6445719 PS |
2793 | case OVS_ACTION_ATTR_SAMPLE: |
2794 | err = sample_action_to_attr(a, skb); | |
2795 | if (err) | |
2796 | return err; | |
2797 | break; | |
7f8a436e JS |
2798 | |
2799 | case OVS_ACTION_ATTR_CT: | |
2800 | err = ovs_ct_action_to_attr(nla_data(a), skb); | |
2801 | if (err) | |
2802 | return err; | |
2803 | break; | |
2804 | ||
e6445719 PS |
2805 | default: |
2806 | if (nla_put(skb, type, nla_len(a), nla_data(a))) | |
2807 | return -EMSGSIZE; | |
2808 | break; | |
2809 | } | |
2810 | } | |
2811 | ||
2812 | return 0; | |
2813 | } |