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