net/wireguard/socket.c

21 		 struct endpoint *endpoint, u8 ds, struct dst_cache *cache)
24 		.saddr = endpoint->src4.s_addr,
25 		.daddr = endpoint->addr4.sin_addr.s_addr,
26 		.fl4_dport = endpoint->addr4.sin_port,
55 			endpoint->src4.s_addr = 0;
56 			endpoint->src_if4 = 0;
62 		if (unlikely(endpoint->src_if4 && ((IS_ERR(rt) &&
64 			     rt->dst.dev->ifindex != endpoint->src_if4)))) {
65 			endpoint->src4.s_addr = 0;
66 			endpoint->src_if4 = 0;
77 					    wg->dev->name, &endpoint->addr, ret);
98 		 struct endpoint *endpoint, u8 ds, struct dst_cache *cache)
102 		.saddr = endpoint->src6,
103 		.daddr = endpoint->addr6.sin6_addr,
104 		.fl6_dport = endpoint->addr6.sin6_port,
106 		.flowi6_oif = endpoint->addr6.sin6_scope_id,
135 			endpoint->src6 = fl.saddr = in6addr_any;
144 					    wg->dev->name, &endpoint->addr, ret);
174 	if (peer->endpoint.addr.sa_family == AF_INET)
175 		ret = send4(peer->device, skb, &peer->endpoint, ds,
177 	else if (peer->endpoint.addr.sa_family == AF_INET6)
178 		ret = send6(peer->device, skb, &peer->endpoint, ds,
209 	struct endpoint endpoint;
213 	ret = wg_socket_endpoint_from_skb(&endpoint, in_skb);
224 	if (endpoint.addr.sa_family == AF_INET)
225 		ret = send4(wg, skb, &endpoint, 0, NULL);
226 	else if (endpoint.addr.sa_family == AF_INET6)
227 		ret = send6(wg, skb, &endpoint, 0, NULL);
228 	/* No other possibilities if the endpoint is valid, which it is,
235 int wg_socket_endpoint_from_skb(struct endpoint *endpoint,
238 	memset(endpoint, 0, sizeof(*endpoint));
240 		endpoint->addr4.sin_family = AF_INET;
241 		endpoint->addr4.sin_port = udp_hdr(skb)->source;
242 		endpoint->addr4.sin_addr.s_addr = ip_hdr(skb)->saddr;
243 		endpoint->src4.s_addr = ip_hdr(skb)->daddr;
244 		endpoint->src_if4 = skb->skb_iif;
246 		endpoint->addr6.sin6_family = AF_INET6;
247 		endpoint->addr6.sin6_port = udp_hdr(skb)->source;
248 		endpoint->addr6.sin6_addr = ipv6_hdr(skb)->saddr;
249 		endpoint->addr6.sin6_scope_id = ipv6_iface_scope_id(
251 		endpoint->src6 = ipv6_hdr(skb)->daddr;
258 static bool endpoint_eq(const struct endpoint *a, const struct endpoint *b)
274 				 const struct endpoint *endpoint)
277 	 * that an endpoint will change. If we happen to be mid-write, and two
281 	if (endpoint_eq(endpoint, &peer->endpoint))
284 	if (endpoint->addr.sa_family == AF_INET) {
285 		peer->endpoint.addr4 = endpoint->addr4;
286 		peer->endpoint.src4 = endpoint->src4;
287 		peer->endpoint.src_if4 = endpoint->src_if4;
288 	} else if (IS_ENABLED(CONFIG_IPV6) && endpoint->addr.sa_family == AF_INET6) {
289 		peer->endpoint.addr6 = endpoint->addr6;
290 		peer->endpoint.src6 = endpoint->src6;
302 	struct endpoint endpoint;
304 	if (!wg_socket_endpoint_from_skb(&endpoint, skb))
305 		wg_socket_set_peer_endpoint(peer, &endpoint);
311 	memset(&peer->endpoint.src6, 0, sizeof(peer->endpoint.src6));