net/ipv6/datagram.c

310 	struct sock_exterr_skb *serr;
321 	serr = SKB_EXT_ERR(skb);
322 	serr->ee.ee_errno = err;
323 	serr->ee.ee_origin = SO_EE_ORIGIN_ICMP6;
324 	serr->ee.ee_type = icmph->icmp6_type;
325 	serr->ee.ee_code = icmph->icmp6_code;
326 	serr->ee.ee_pad = 0;
327 	serr->ee.ee_info = info;
328 	serr->ee.ee_data = 0;
329 	serr->addr_offset = (u8 *)&(((struct ipv6hdr *)(icmph + 1))->daddr) -
331 	serr->port = port;
336 		ipv6_icmp_error_rfc4884(skb, &serr->ee.ee_rfc4884);
347 	struct sock_exterr_skb *serr;
366 	serr = SKB_EXT_ERR(skb);
367 	serr->ee.ee_errno = err;
368 	serr->ee.ee_origin = SO_EE_ORIGIN_LOCAL;
369 	serr->ee.ee_type = 0;
370 	serr->ee.ee_code = 0;
371 	serr->ee.ee_pad = 0;
372 	serr->ee.ee_info = info;
373 	serr->ee.ee_data = 0;
374 	serr->addr_offset = (u8 *)&iph->daddr - skb_network_header(skb);
375 	serr->port = fl6->fl6_dport;
422 static inline bool ipv6_datagram_support_addr(struct sock_exterr_skb *serr)
424 	return serr->ee.ee_origin == SO_EE_ORIGIN_ICMP6 ||
425 	       serr->ee.ee_origin == SO_EE_ORIGIN_ICMP ||
426 	       serr->ee.ee_origin == SO_EE_ORIGIN_LOCAL || serr->port;
436 				      struct sock_exterr_skb *serr)
438 	if (serr->ee.ee_origin == SO_EE_ORIGIN_ICMP ||
439 	    serr->ee.ee_origin == SO_EE_ORIGIN_ICMP6)
442 	if (serr->ee.ee_origin == SO_EE_ORIGIN_LOCAL)
457 	struct sock_exterr_skb *serr;
484 	serr = SKB_EXT_ERR(skb);
486 	if (sin && ipv6_datagram_support_addr(serr)) {
490 		sin->sin6_port = serr->port;
492 			const struct ipv6hdr *ip6h = container_of((struct in6_addr *)(nh + serr->addr_offset),
501 			ipv6_addr_set_v4mapped(*(__be32 *)(nh + serr->addr_offset),
508 	memcpy(&errhdr.ee, &serr->ee, sizeof(struct sock_extended_err));
512 	if (ip6_datagram_support_cmsg(skb, serr)) {