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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
012a5729 PS |
2 | #ifndef __NET_VXLAN_H |
3 | #define __NET_VXLAN_H 1 | |
4 | ||
5f35227e | 5 | #include <linux/if_vlan.h> |
86a98057 | 6 | #include <net/udp_tunnel.h> |
ee122c79 | 7 | #include <net/dst_metadata.h> |
5ff4ff4f | 8 | #include <net/rtnetlink.h> |
9a997353 | 9 | #include <net/switchdev.h> |
1274e1cc | 10 | #include <net/nexthop.h> |
012a5729 | 11 | |
bea96410 MS |
12 | #define IANA_VXLAN_UDP_PORT 4789 |
13 | ||
828788ac JB |
14 | /* VXLAN protocol (RFC 7348) header: |
15 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
16 | * |R|R|R|R|I|R|R|R| Reserved | | |
17 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
18 | * | VXLAN Network Identifier (VNI) | Reserved | | |
19 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
20 | * | |
21 | * I = VXLAN Network Identifier (VNI) present. | |
22 | */ | |
23 | struct vxlanhdr { | |
24 | __be32 vx_flags; | |
25 | __be32 vx_vni; | |
26 | }; | |
27 | ||
28 | /* VXLAN header flags. */ | |
54bfd872 | 29 | #define VXLAN_HF_VNI cpu_to_be32(BIT(27)) |
828788ac JB |
30 | |
31 | #define VXLAN_N_VID (1u << 24) | |
32 | #define VXLAN_VID_MASK (VXLAN_N_VID - 1) | |
54bfd872 | 33 | #define VXLAN_VNI_MASK cpu_to_be32(VXLAN_VID_MASK << 8) |
828788ac JB |
34 | #define VXLAN_HLEN (sizeof(struct udphdr) + sizeof(struct vxlanhdr)) |
35 | ||
36 | #define VNI_HASH_BITS 10 | |
37 | #define VNI_HASH_SIZE (1<<VNI_HASH_BITS) | |
38 | #define FDB_HASH_BITS 8 | |
39 | #define FDB_HASH_SIZE (1<<FDB_HASH_BITS) | |
40 | ||
41 | /* Remote checksum offload for VXLAN (VXLAN_F_REMCSUM_[RT]X): | |
42 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
43 | * |R|R|R|R|I|R|R|R|R|R|C| Reserved | | |
44 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
45 | * | VXLAN Network Identifier (VNI) |O| Csum start | | |
46 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
47 | * | |
48 | * C = Remote checksum offload bit. When set indicates that the | |
49 | * remote checksum offload data is present. | |
50 | * | |
51 | * O = Offset bit. Indicates the checksum offset relative to | |
52 | * checksum start. | |
53 | * | |
54 | * Csum start = Checksum start divided by two. | |
55 | * | |
56 | * http://tools.ietf.org/html/draft-herbert-vxlan-rco | |
57 | */ | |
58 | ||
59 | /* VXLAN-RCO header flags. */ | |
54bfd872 | 60 | #define VXLAN_HF_RCO cpu_to_be32(BIT(21)) |
828788ac JB |
61 | |
62 | /* Remote checksum offload header option */ | |
54bfd872 JB |
63 | #define VXLAN_RCO_MASK cpu_to_be32(0x7f) /* Last byte of vni field */ |
64 | #define VXLAN_RCO_UDP cpu_to_be32(0x80) /* Indicate UDP RCO (TCP when not set *) */ | |
65 | #define VXLAN_RCO_SHIFT 1 /* Left shift of start */ | |
828788ac | 66 | #define VXLAN_RCO_SHIFT_MASK ((1 << VXLAN_RCO_SHIFT) - 1) |
54bfd872 | 67 | #define VXLAN_MAX_REMCSUM_START (0x7f << VXLAN_RCO_SHIFT) |
828788ac | 68 | |
3511494c | 69 | /* |
828788ac | 70 | * VXLAN Group Based Policy Extension (VXLAN_F_GBP): |
3511494c | 71 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
828788ac | 72 | * |G|R|R|R|I|R|R|R|R|D|R|R|A|R|R|R| Group Policy ID | |
3511494c TG |
73 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
74 | * | VXLAN Network Identifier (VNI) | Reserved | | |
75 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
76 | * | |
828788ac JB |
77 | * G = Group Policy ID present. |
78 | * | |
3511494c TG |
79 | * D = Don't Learn bit. When set, this bit indicates that the egress |
80 | * VTEP MUST NOT learn the source address of the encapsulated frame. | |
81 | * | |
82 | * A = Indicates that the group policy has already been applied to | |
83 | * this packet. Policies MUST NOT be applied by devices when the | |
84 | * A bit is set. | |
85 | * | |
828788ac | 86 | * https://tools.ietf.org/html/draft-smith-vxlan-group-policy |
3511494c TG |
87 | */ |
88 | struct vxlanhdr_gbp { | |
0e715d6f | 89 | u8 vx_flags; |
3511494c | 90 | #ifdef __LITTLE_ENDIAN_BITFIELD |
0e715d6f | 91 | u8 reserved_flags1:3, |
3511494c TG |
92 | policy_applied:1, |
93 | reserved_flags2:2, | |
94 | dont_learn:1, | |
95 | reserved_flags3:1; | |
96 | #elif defined(__BIG_ENDIAN_BITFIELD) | |
0e715d6f | 97 | u8 reserved_flags1:1, |
3511494c TG |
98 | dont_learn:1, |
99 | reserved_flags2:2, | |
100 | policy_applied:1, | |
101 | reserved_flags3:3; | |
102 | #else | |
103 | #error "Please fix <asm/byteorder.h>" | |
104 | #endif | |
105 | __be16 policy_id; | |
106 | __be32 vx_vni; | |
107 | }; | |
108 | ||
828788ac | 109 | /* VXLAN-GBP header flags. */ |
54bfd872 | 110 | #define VXLAN_HF_GBP cpu_to_be32(BIT(31)) |
828788ac | 111 | |
54bfd872 | 112 | #define VXLAN_GBP_USED_BITS (VXLAN_HF_GBP | cpu_to_be32(0xFFFFFF)) |
3511494c TG |
113 | |
114 | /* skb->mark mapping | |
115 | * | |
116 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
117 | * |R|R|R|R|R|R|R|R|R|D|R|R|A|R|R|R| Group Policy ID | | |
118 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
119 | */ | |
120 | #define VXLAN_GBP_DONT_LEARN (BIT(6) << 16) | |
121 | #define VXLAN_GBP_POLICY_APPLIED (BIT(3) << 16) | |
122 | #define VXLAN_GBP_ID_MASK (0xFFFF) | |
123 | ||
13e6ce98 XL |
124 | #define VXLAN_GBP_MASK (VXLAN_GBP_DONT_LEARN | VXLAN_GBP_POLICY_APPLIED | \ |
125 | VXLAN_GBP_ID_MASK) | |
126 | ||
e1e5314d JB |
127 | /* |
128 | * VXLAN Generic Protocol Extension (VXLAN_F_GPE): | |
129 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
130 | * |R|R|Ver|I|P|R|O| Reserved |Next Protocol | | |
131 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
132 | * | VXLAN Network Identifier (VNI) | Reserved | | |
133 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
134 | * | |
135 | * Ver = Version. Indicates VXLAN GPE protocol version. | |
136 | * | |
137 | * P = Next Protocol Bit. The P bit is set to indicate that the | |
138 | * Next Protocol field is present. | |
139 | * | |
140 | * O = OAM Flag Bit. The O bit is set to indicate that the packet | |
141 | * is an OAM packet. | |
142 | * | |
143 | * Next Protocol = This 8 bit field indicates the protocol header | |
144 | * immediately following the VXLAN GPE header. | |
145 | * | |
146 | * https://tools.ietf.org/html/draft-ietf-nvo3-vxlan-gpe-01 | |
147 | */ | |
148 | ||
149 | struct vxlanhdr_gpe { | |
150 | #if defined(__LITTLE_ENDIAN_BITFIELD) | |
151 | u8 oam_flag:1, | |
152 | reserved_flags1:1, | |
153 | np_applied:1, | |
154 | instance_applied:1, | |
155 | version:2, | |
f1c8d372 | 156 | reserved_flags2:2; |
e1e5314d JB |
157 | #elif defined(__BIG_ENDIAN_BITFIELD) |
158 | u8 reserved_flags2:2, | |
159 | version:2, | |
160 | instance_applied:1, | |
161 | np_applied:1, | |
162 | reserved_flags1:1, | |
163 | oam_flag:1; | |
164 | #endif | |
165 | u8 reserved_flags3; | |
166 | u8 reserved_flags4; | |
167 | u8 next_protocol; | |
168 | __be32 vx_vni; | |
169 | }; | |
170 | ||
171 | /* VXLAN-GPE header flags. */ | |
172 | #define VXLAN_HF_VER cpu_to_be32(BIT(29) | BIT(28)) | |
173 | #define VXLAN_HF_NP cpu_to_be32(BIT(26)) | |
174 | #define VXLAN_HF_OAM cpu_to_be32(BIT(24)) | |
175 | ||
176 | #define VXLAN_GPE_USED_BITS (VXLAN_HF_VER | VXLAN_HF_NP | VXLAN_HF_OAM | \ | |
177 | cpu_to_be32(0xff)) | |
178 | ||
3511494c | 179 | struct vxlan_metadata { |
3511494c TG |
180 | u32 gbp; |
181 | }; | |
182 | ||
012a5729 PS |
183 | /* per UDP socket information */ |
184 | struct vxlan_sock { | |
185 | struct hlist_node hlist; | |
012a5729 | 186 | struct socket *sock; |
012a5729 | 187 | struct hlist_head vni_list[VNI_HASH_SIZE]; |
66af846f | 188 | refcount_t refcnt; |
dfd8645e | 189 | u32 flags; |
012a5729 PS |
190 | }; |
191 | ||
0dfbdf41 TG |
192 | union vxlan_addr { |
193 | struct sockaddr_in sin; | |
194 | struct sockaddr_in6 sin6; | |
195 | struct sockaddr sa; | |
196 | }; | |
197 | ||
198 | struct vxlan_rdst { | |
199 | union vxlan_addr remote_ip; | |
200 | __be16 remote_port; | |
0efe1173 | 201 | u8 offloaded:1; |
54bfd872 | 202 | __be32 remote_vni; |
0dfbdf41 | 203 | u32 remote_ifindex; |
0ce1822c | 204 | struct net_device *remote_dev; |
0dfbdf41 TG |
205 | struct list_head list; |
206 | struct rcu_head rcu; | |
0c1d70af | 207 | struct dst_cache dst_cache; |
0dfbdf41 TG |
208 | }; |
209 | ||
210 | struct vxlan_config { | |
211 | union vxlan_addr remote_ip; | |
212 | union vxlan_addr saddr; | |
54bfd872 | 213 | __be32 vni; |
0dfbdf41 TG |
214 | int remote_ifindex; |
215 | int mtu; | |
216 | __be16 dst_port; | |
0e715d6f JB |
217 | u16 port_min; |
218 | u16 port_max; | |
219 | u8 tos; | |
220 | u8 ttl; | |
e7f70af1 | 221 | __be32 label; |
0dfbdf41 TG |
222 | u32 flags; |
223 | unsigned long age_interval; | |
224 | unsigned int addrmax; | |
225 | bool no_share; | |
b4d30697 | 226 | enum ifla_vxlan_df df; |
0dfbdf41 TG |
227 | }; |
228 | ||
69e76661 JB |
229 | struct vxlan_dev_node { |
230 | struct hlist_node hlist; | |
231 | struct vxlan_dev *vxlan; | |
232 | }; | |
233 | ||
0dfbdf41 TG |
234 | /* Pseudo network device */ |
235 | struct vxlan_dev { | |
69e76661 JB |
236 | struct vxlan_dev_node hlist4; /* vni hash table for IPv4 socket */ |
237 | #if IS_ENABLED(CONFIG_IPV6) | |
238 | struct vxlan_dev_node hlist6; /* vni hash table for IPv6 socket */ | |
239 | #endif | |
0dfbdf41 | 240 | struct list_head next; /* vxlan's per namespace list */ |
c6fcc4fc | 241 | struct vxlan_sock __rcu *vn4_sock; /* listening socket for IPv4 */ |
b1be00a6 | 242 | #if IS_ENABLED(CONFIG_IPV6) |
c6fcc4fc | 243 | struct vxlan_sock __rcu *vn6_sock; /* listening socket for IPv6 */ |
b1be00a6 | 244 | #endif |
0dfbdf41 TG |
245 | struct net_device *dev; |
246 | struct net *net; /* netns for packet i/o */ | |
247 | struct vxlan_rdst default_dst; /* default destination */ | |
0dfbdf41 TG |
248 | |
249 | struct timer_list age_timer; | |
fe1e0713 | 250 | spinlock_t hash_lock[FDB_HASH_SIZE]; |
0dfbdf41 | 251 | unsigned int addrcnt; |
58ce31cc | 252 | struct gro_cells gro_cells; |
0dfbdf41 TG |
253 | |
254 | struct vxlan_config cfg; | |
255 | ||
256 | struct hlist_head fdb_head[FDB_HASH_SIZE]; | |
257 | }; | |
258 | ||
359a0ea9 TH |
259 | #define VXLAN_F_LEARN 0x01 |
260 | #define VXLAN_F_PROXY 0x02 | |
261 | #define VXLAN_F_RSC 0x04 | |
262 | #define VXLAN_F_L2MISS 0x08 | |
263 | #define VXLAN_F_L3MISS 0x10 | |
264 | #define VXLAN_F_IPV6 0x20 | |
6ceb31ca | 265 | #define VXLAN_F_UDP_ZERO_CSUM_TX 0x40 |
359a0ea9 TH |
266 | #define VXLAN_F_UDP_ZERO_CSUM6_TX 0x80 |
267 | #define VXLAN_F_UDP_ZERO_CSUM6_RX 0x100 | |
dfd8645e TH |
268 | #define VXLAN_F_REMCSUM_TX 0x200 |
269 | #define VXLAN_F_REMCSUM_RX 0x400 | |
3511494c | 270 | #define VXLAN_F_GBP 0x800 |
0ace2ca8 | 271 | #define VXLAN_F_REMCSUM_NOPARTIAL 0x1000 |
ee122c79 | 272 | #define VXLAN_F_COLLECT_METADATA 0x2000 |
e1e5314d | 273 | #define VXLAN_F_GPE 0x4000 |
0f22a3c6 | 274 | #define VXLAN_F_IPV6_LINKLOCAL 0x8000 |
72f6d71e | 275 | #define VXLAN_F_TTL_INHERIT 0x10000 |
359a0ea9 | 276 | |
d299ce14 | 277 | /* Flags that are used in the receive path. These flags must match in |
af33c1ad TH |
278 | * order for a socket to be shareable |
279 | */ | |
280 | #define VXLAN_F_RCV_FLAGS (VXLAN_F_GBP | \ | |
e1e5314d | 281 | VXLAN_F_GPE | \ |
af33c1ad | 282 | VXLAN_F_UDP_ZERO_CSUM6_RX | \ |
0ace2ca8 | 283 | VXLAN_F_REMCSUM_RX | \ |
ee122c79 | 284 | VXLAN_F_REMCSUM_NOPARTIAL | \ |
da8b43c0 | 285 | VXLAN_F_COLLECT_METADATA) |
ac5132d1 | 286 | |
e1e5314d JB |
287 | /* Flags that can be set together with VXLAN_F_GPE. */ |
288 | #define VXLAN_F_ALLOWED_GPE (VXLAN_F_GPE | \ | |
289 | VXLAN_F_IPV6 | \ | |
0f22a3c6 | 290 | VXLAN_F_IPV6_LINKLOCAL | \ |
e1e5314d JB |
291 | VXLAN_F_UDP_ZERO_CSUM_TX | \ |
292 | VXLAN_F_UDP_ZERO_CSUM6_TX | \ | |
293 | VXLAN_F_UDP_ZERO_CSUM6_RX | \ | |
294 | VXLAN_F_COLLECT_METADATA) | |
295 | ||
0dfbdf41 TG |
296 | struct net_device *vxlan_dev_create(struct net *net, const char *name, |
297 | u8 name_assign_type, struct vxlan_config *conf); | |
298 | ||
5f35227e JG |
299 | static inline netdev_features_t vxlan_features_check(struct sk_buff *skb, |
300 | netdev_features_t features) | |
11bf7828 | 301 | { |
5f35227e JG |
302 | u8 l4_hdr = 0; |
303 | ||
304 | if (!skb->encapsulation) | |
305 | return features; | |
306 | ||
307 | switch (vlan_get_protocol(skb)) { | |
308 | case htons(ETH_P_IP): | |
309 | l4_hdr = ip_hdr(skb)->protocol; | |
310 | break; | |
311 | case htons(ETH_P_IPV6): | |
312 | l4_hdr = ipv6_hdr(skb)->nexthdr; | |
313 | break; | |
314 | default: | |
5ef7e0ba | 315 | return features; |
5f35227e JG |
316 | } |
317 | ||
318 | if ((l4_hdr == IPPROTO_UDP) && | |
11bf7828 JS |
319 | (skb->inner_protocol_type != ENCAP_TYPE_ETHER || |
320 | skb->inner_protocol != htons(ETH_P_TEB) || | |
321 | (skb_inner_mac_header(skb) - skb_transport_header(skb) != | |
af67eb9e AD |
322 | sizeof(struct udphdr) + sizeof(struct vxlanhdr)) || |
323 | (skb->ip_summed != CHECKSUM_NONE && | |
324 | !can_checksum_protocol(features, inner_eth_hdr(skb)->h_proto)))) | |
a188222b | 325 | return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK); |
11bf7828 | 326 | |
5f35227e | 327 | return features; |
11bf7828 | 328 | } |
23e62de3 | 329 | |
e6cd988c JG |
330 | /* IP header + UDP + VXLAN + Ethernet header */ |
331 | #define VXLAN_HEADROOM (20 + 8 + 8 + 14) | |
332 | /* IPv6 header + UDP + VXLAN + Ethernet header */ | |
333 | #define VXLAN6_HEADROOM (40 + 8 + 8 + 14) | |
334 | ||
d4ac05ff JB |
335 | static inline struct vxlanhdr *vxlan_hdr(struct sk_buff *skb) |
336 | { | |
337 | return (struct vxlanhdr *)(udp_hdr(skb) + 1); | |
338 | } | |
339 | ||
54bfd872 JB |
340 | static inline __be32 vxlan_vni(__be32 vni_field) |
341 | { | |
342 | #if defined(__BIG_ENDIAN) | |
5692d7ea | 343 | return (__force __be32)((__force u32)vni_field >> 8); |
54bfd872 | 344 | #else |
5692d7ea | 345 | return (__force __be32)((__force u32)(vni_field & VXLAN_VNI_MASK) << 8); |
54bfd872 JB |
346 | #endif |
347 | } | |
348 | ||
349 | static inline __be32 vxlan_vni_field(__be32 vni) | |
350 | { | |
351 | #if defined(__BIG_ENDIAN) | |
5692d7ea | 352 | return (__force __be32)((__force u32)vni << 8); |
54bfd872 | 353 | #else |
5692d7ea | 354 | return (__force __be32)((__force u32)vni >> 8); |
54bfd872 JB |
355 | #endif |
356 | } | |
357 | ||
54bfd872 JB |
358 | static inline size_t vxlan_rco_start(__be32 vni_field) |
359 | { | |
360 | return be32_to_cpu(vni_field & VXLAN_RCO_MASK) << VXLAN_RCO_SHIFT; | |
361 | } | |
362 | ||
363 | static inline size_t vxlan_rco_offset(__be32 vni_field) | |
364 | { | |
365 | return (vni_field & VXLAN_RCO_UDP) ? | |
366 | offsetof(struct udphdr, check) : | |
367 | offsetof(struct tcphdr, check); | |
368 | } | |
369 | ||
370 | static inline __be32 vxlan_compute_rco(unsigned int start, unsigned int offset) | |
371 | { | |
372 | __be32 vni_field = cpu_to_be32(start >> VXLAN_RCO_SHIFT); | |
373 | ||
374 | if (offset == offsetof(struct udphdr, check)) | |
375 | vni_field |= VXLAN_RCO_UDP; | |
376 | return vni_field; | |
377 | } | |
378 | ||
705cc62f JB |
379 | static inline unsigned short vxlan_get_sk_family(struct vxlan_sock *vs) |
380 | { | |
381 | return vs->sock->sk->sk_family; | |
382 | } | |
48e92c44 | 383 | |
cca45e05 IS |
384 | #if IS_ENABLED(CONFIG_IPV6) |
385 | ||
386 | static inline bool vxlan_addr_any(const union vxlan_addr *ipa) | |
387 | { | |
388 | if (ipa->sa.sa_family == AF_INET6) | |
389 | return ipv6_addr_any(&ipa->sin6.sin6_addr); | |
390 | else | |
391 | return ipa->sin.sin_addr.s_addr == htonl(INADDR_ANY); | |
392 | } | |
393 | ||
394 | static inline bool vxlan_addr_multicast(const union vxlan_addr *ipa) | |
395 | { | |
396 | if (ipa->sa.sa_family == AF_INET6) | |
397 | return ipv6_addr_is_multicast(&ipa->sin6.sin6_addr); | |
398 | else | |
842841ec | 399 | return ipv4_is_multicast(ipa->sin.sin_addr.s_addr); |
cca45e05 IS |
400 | } |
401 | ||
402 | #else /* !IS_ENABLED(CONFIG_IPV6) */ | |
403 | ||
404 | static inline bool vxlan_addr_any(const union vxlan_addr *ipa) | |
405 | { | |
406 | return ipa->sin.sin_addr.s_addr == htonl(INADDR_ANY); | |
407 | } | |
408 | ||
409 | static inline bool vxlan_addr_multicast(const union vxlan_addr *ipa) | |
410 | { | |
842841ec | 411 | return ipv4_is_multicast(ipa->sin.sin_addr.s_addr); |
cca45e05 IS |
412 | } |
413 | ||
414 | #endif /* IS_ENABLED(CONFIG_IPV6) */ | |
415 | ||
5ff4ff4f IS |
416 | static inline bool netif_is_vxlan(const struct net_device *dev) |
417 | { | |
418 | return dev->rtnl_link_ops && | |
419 | !strcmp(dev->rtnl_link_ops->kind, "vxlan"); | |
420 | } | |
421 | ||
9a997353 PM |
422 | struct switchdev_notifier_vxlan_fdb_info { |
423 | struct switchdev_notifier_info info; /* must be first */ | |
424 | union vxlan_addr remote_ip; | |
425 | __be16 remote_port; | |
426 | __be32 remote_vni; | |
427 | u32 remote_ifindex; | |
428 | u8 eth_addr[ETH_ALEN]; | |
429 | __be32 vni; | |
0efe1173 | 430 | bool offloaded; |
45598c1c | 431 | bool added_by_user; |
9a997353 PM |
432 | }; |
433 | ||
1941f1d6 PM |
434 | #if IS_ENABLED(CONFIG_VXLAN) |
435 | int vxlan_fdb_find_uc(struct net_device *dev, const u8 *mac, __be32 vni, | |
436 | struct switchdev_notifier_vxlan_fdb_info *fdb_info); | |
4f89f5b5 | 437 | int vxlan_fdb_replay(const struct net_device *dev, __be32 vni, |
4c59b7d1 PM |
438 | struct notifier_block *nb, |
439 | struct netlink_ext_ack *extack); | |
e5ff4b19 | 440 | void vxlan_fdb_clear_offload(const struct net_device *dev, __be32 vni); |
4f89f5b5 | 441 | |
1941f1d6 PM |
442 | #else |
443 | static inline int | |
444 | vxlan_fdb_find_uc(struct net_device *dev, const u8 *mac, __be32 vni, | |
445 | struct switchdev_notifier_vxlan_fdb_info *fdb_info) | |
446 | { | |
447 | return -ENOENT; | |
448 | } | |
4f89f5b5 PM |
449 | |
450 | static inline int vxlan_fdb_replay(const struct net_device *dev, __be32 vni, | |
4c59b7d1 PM |
451 | struct notifier_block *nb, |
452 | struct netlink_ext_ack *extack) | |
4f89f5b5 PM |
453 | { |
454 | return -EOPNOTSUPP; | |
455 | } | |
e5ff4b19 PM |
456 | |
457 | static inline void | |
458 | vxlan_fdb_clear_offload(const struct net_device *dev, __be32 vni) | |
459 | { | |
460 | } | |
1941f1d6 PM |
461 | #endif |
462 | ||
70fb0828 RP |
463 | static inline void vxlan_flag_attr_error(int attrtype, |
464 | struct netlink_ext_ack *extack) | |
465 | { | |
466 | #define VXLAN_FLAG(flg) \ | |
467 | case IFLA_VXLAN_##flg: \ | |
468 | NL_SET_ERR_MSG_MOD(extack, \ | |
469 | "cannot change " #flg " flag"); \ | |
470 | break | |
471 | switch (attrtype) { | |
472 | VXLAN_FLAG(TTL_INHERIT); | |
473 | VXLAN_FLAG(LEARNING); | |
474 | VXLAN_FLAG(PROXY); | |
475 | VXLAN_FLAG(RSC); | |
476 | VXLAN_FLAG(L2MISS); | |
477 | VXLAN_FLAG(L3MISS); | |
478 | VXLAN_FLAG(COLLECT_METADATA); | |
479 | VXLAN_FLAG(UDP_ZERO_CSUM6_TX); | |
480 | VXLAN_FLAG(UDP_ZERO_CSUM6_RX); | |
481 | VXLAN_FLAG(REMCSUM_TX); | |
482 | VXLAN_FLAG(REMCSUM_RX); | |
483 | VXLAN_FLAG(GBP); | |
484 | VXLAN_FLAG(GPE); | |
485 | VXLAN_FLAG(REMCSUM_NOPARTIAL); | |
486 | default: | |
487 | NL_SET_ERR_MSG_MOD(extack, \ | |
488 | "cannot change flag"); | |
489 | break; | |
490 | } | |
491 | #undef VXLAN_FLAG | |
492 | } | |
493 | ||
1274e1cc RP |
494 | static inline bool vxlan_fdb_nh_path_select(struct nexthop *nh, |
495 | int hash, | |
496 | struct vxlan_rdst *rdst) | |
497 | { | |
498 | struct fib_nh_common *nhc; | |
499 | ||
500 | nhc = nexthop_path_fdb_result(nh, hash); | |
501 | if (unlikely(!nhc)) | |
502 | return false; | |
503 | ||
504 | switch (nhc->nhc_gw_family) { | |
505 | case AF_INET: | |
506 | rdst->remote_ip.sin.sin_addr.s_addr = nhc->nhc_gw.ipv4; | |
507 | rdst->remote_ip.sa.sa_family = AF_INET; | |
508 | break; | |
509 | case AF_INET6: | |
510 | rdst->remote_ip.sin6.sin6_addr = nhc->nhc_gw.ipv6; | |
511 | rdst->remote_ip.sa.sa_family = AF_INET6; | |
512 | break; | |
513 | } | |
514 | ||
515 | return true; | |
516 | } | |
517 | ||
48e92c44 | 518 | #endif |