86 static void icmpv6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,  in icmpv6_err()  argument
90 	struct icmp6hdr *icmp6 = (struct icmp6hdr *) (skb->data + offset);  in icmpv6_err()
91 	struct net *net = dev_net(skb->dev);  in icmpv6_err()
94 		ip6_update_pmtu(skb, net, info, 0, 0);  in icmpv6_err()
96 		ip6_redirect(skb, net, skb->dev->ifindex, 0);  in icmpv6_err()
100 			ping_err(skb, offset, info);  in icmpv6_err()
103 static int icmpv6_rcv(struct sk_buff *skb);
145 static bool is_ineligible(const struct sk_buff *skb)  in is_ineligible()  argument
147 	int ptr = (u8 *)(ipv6_hdr(skb) + 1) - skb->data;  in is_ineligible()
148 	int len = skb->len - ptr;  in is_ineligible()
149 	__u8 nexthdr = ipv6_hdr(skb)->nexthdr;  in is_ineligible()
155 	ptr = ipv6_skip_exthdr(skb, ptr, &nexthdr, &frag_off);  in is_ineligible()
160 		tp = skb_header_pointer(skb,  in is_ineligible()
227 static bool opt_unrec(struct sk_buff *skb, __u32 offset)  in opt_unrec()  argument
231 	offset += skb_network_offset(skb);  in opt_unrec()
232 	op = skb_header_pointer(skb, offset, sizeof(_optval), &_optval);  in opt_unrec()
241 	struct sk_buff *skb;  in icmpv6_push_pending_frames()  local
245 	skb = skb_peek(&sk->sk_write_queue);  in icmpv6_push_pending_frames()
246 	if (!skb)  in icmpv6_push_pending_frames()
249 	icmp6h = icmp6_hdr(skb);  in icmpv6_push_pending_frames()
254 		skb->csum = csum_partial(icmp6h,  in icmpv6_push_pending_frames()
255 					sizeof(struct icmp6hdr), skb->csum);  in icmpv6_push_pending_frames()
259 						      skb->csum);  in icmpv6_push_pending_frames()
263 		skb_queue_walk(&sk->sk_write_queue, skb) {  in icmpv6_push_pending_frames()
264 			tmp_csum = csum_add(tmp_csum, skb->csum);  in icmpv6_push_pending_frames()
280 	struct sk_buff	*skb;  member
285 static int icmpv6_getfrag(void *from, char *to, int offset, int len, int odd, struct sk_buff *skb)  in icmpv6_getfrag()  argument
288 	struct sk_buff *org_skb = msg->skb;  in icmpv6_getfrag()
293 	skb->csum = csum_block_add(skb->csum, csum, odd);  in icmpv6_getfrag()
295 		nf_ct_attach(skb, org_skb);  in icmpv6_getfrag()
300 static void mip6_addr_swap(struct sk_buff *skb)  in mip6_addr_swap()  argument
302 	struct ipv6hdr *iph = ipv6_hdr(skb);  in mip6_addr_swap()
303 	struct inet6_skb_parm *opt = IP6CB(skb);  in mip6_addr_swap()
309 		off = ipv6_find_tlv(skb, opt->dsthao, IPV6_TLV_HAO);  in mip6_addr_swap()
312 					(skb_network_header(skb) + off);  in mip6_addr_swap()
320 static inline void mip6_addr_swap(struct sk_buff *skb) {}  in mip6_addr_swap()  argument
324 					     struct sk_buff *skb,  in icmpv6_route_lookup()  argument
360 	err = xfrm_decode_session_reverse(skb, flowi6_to_flowi(&fl2), AF_INET6);  in icmpv6_route_lookup()
390 static void icmp6_send(struct sk_buff *skb, u8 type, u8 code, __u32 info)  in icmp6_send()  argument
392 	struct net *net = dev_net(skb->dev);  in icmp6_send()
394 	struct ipv6hdr *hdr = ipv6_hdr(skb);  in icmp6_send()
407 	u32 mark = IP6_REPLY_MARK(net, skb->mark);  in icmp6_send()
409 	if ((u8 *)hdr < skb->head ||  in icmp6_send()
410 	    (skb_network_header(skb) + sizeof(*hdr)) > skb_tail_pointer(skb))  in icmp6_send()
421 	if (ipv6_chk_addr(net, &hdr->daddr, skb->dev, 0) ||  in icmp6_send()
422 	    ipv6_chk_acast_addr_src(net, skb->dev, &hdr->daddr))  in icmp6_send()
429 	if (addr_type & IPV6_ADDR_MULTICAST || skb->pkt_type != PACKET_HOST) {  in icmp6_send()
433 		      (opt_unrec(skb, info))))  in icmp6_send()
446 		iif = skb->dev->ifindex;  in icmp6_send()
462 	if (is_ineligible(skb)) {  in icmp6_send()
467 	mip6_addr_swap(skb);  in icmp6_send()
478 	security_skb_classify_flow(skb, flowi6_to_flowi(&fl6));  in icmp6_send()
499 	dst = icmpv6_route_lookup(net, skb, sk, &fl6);  in icmp6_send()
505 	msg.skb = skb;  in icmp6_send()
506 	msg.offset = skb_network_offset(skb);  in icmp6_send()
509 	len = skb->len - msg.offset;  in icmp6_send()
517 	idev = __in6_dev_get(skb->dev);  in icmp6_send()
540 void icmpv6_param_prob(struct sk_buff *skb, u8 code, int pos)  in icmpv6_param_prob()  argument
542 	icmp6_send(skb, ICMPV6_PARAMPROB, code, pos);  in icmpv6_param_prob()
543 	kfree_skb(skb);  in icmpv6_param_prob()
546 static void icmpv6_echo_reply(struct sk_buff *skb)  in icmpv6_echo_reply()  argument
548 	struct net *net = dev_net(skb->dev);  in icmpv6_echo_reply()
553 	struct icmp6hdr *icmph = icmp6_hdr(skb);  in icmpv6_echo_reply()
561 	u32 mark = IP6_REPLY_MARK(net, skb->mark);  in icmpv6_echo_reply()
563 	saddr = &ipv6_hdr(skb)->daddr;  in icmpv6_echo_reply()
565 	if (!ipv6_unicast_destination(skb) &&  in icmpv6_echo_reply()
567 	      ipv6_anycast_destination(skb)))  in icmpv6_echo_reply()
575 	fl6.daddr = ipv6_hdr(skb)->saddr;  in icmpv6_echo_reply()
578 	fl6.flowi6_oif = skb->dev->ifindex;  in icmpv6_echo_reply()
581 	security_skb_classify_flow(skb, flowi6_to_flowi(&fl6));  in icmpv6_echo_reply()
603 	idev = __in6_dev_get(skb->dev);  in icmpv6_echo_reply()
605 	msg.skb = skb;  in icmpv6_echo_reply()
609 	tclass = ipv6_get_dsfield(ipv6_hdr(skb));  in icmpv6_echo_reply()
610 	err = ip6_append_data(sk, icmpv6_getfrag, &msg, skb->len + sizeof(struct icmp6hdr),  in icmpv6_echo_reply()
620 						 skb->len + sizeof(struct icmp6hdr));  in icmpv6_echo_reply()
627 void icmpv6_notify(struct sk_buff *skb, u8 type, u8 code, __be32 info)  in icmpv6_notify()  argument
633 	struct net *net = dev_net(skb->dev);  in icmpv6_notify()
635 	if (!pskb_may_pull(skb, sizeof(struct ipv6hdr)))  in icmpv6_notify()
638 	nexthdr = ((struct ipv6hdr *)skb->data)->nexthdr;  in icmpv6_notify()
641 		inner_offset = ipv6_skip_exthdr(skb, sizeof(struct ipv6hdr),  in icmpv6_notify()
650 	if (!pskb_may_pull(skb, inner_offset+8))  in icmpv6_notify()
662 		ipprot->err_handler(skb, NULL, type, code, inner_offset, info);  in icmpv6_notify()
664 	raw6_icmp_error(skb, nexthdr, type, code, inner_offset, info);  in icmpv6_notify()
668 	ICMP6_INC_STATS_BH(net, __in6_dev_get(skb->dev), ICMP6_MIB_INERRORS);  in icmpv6_notify()
675 static int icmpv6_rcv(struct sk_buff *skb)  in icmpv6_rcv()  argument
677 	struct net_device *dev = skb->dev;  in icmpv6_rcv()
684 	if (!xfrm6_policy_check(NULL, XFRM_POLICY_IN, skb)) {  in icmpv6_rcv()
685 		struct sec_path *sp = skb_sec_path(skb);  in icmpv6_rcv()
692 		if (!pskb_may_pull(skb, sizeof(*hdr) + sizeof(struct ipv6hdr)))  in icmpv6_rcv()
695 		nh = skb_network_offset(skb);  in icmpv6_rcv()
696 		skb_set_network_header(skb, sizeof(*hdr));  in icmpv6_rcv()
698 		if (!xfrm6_policy_check_reverse(NULL, XFRM_POLICY_IN, skb))  in icmpv6_rcv()
701 		skb_set_network_header(skb, nh);  in icmpv6_rcv()
706 	saddr = &ipv6_hdr(skb)->saddr;  in icmpv6_rcv()
707 	daddr = &ipv6_hdr(skb)->daddr;  in icmpv6_rcv()
709 	if (skb_checksum_validate(skb, IPPROTO_ICMPV6, ip6_compute_pseudo)) {  in icmpv6_rcv()
715 	if (!pskb_pull(skb, sizeof(*hdr)))  in icmpv6_rcv()
718 	hdr = icmp6_hdr(skb);  in icmpv6_rcv()
726 		icmpv6_echo_reply(skb);  in icmpv6_rcv()
730 		success = ping_rcv(skb);  in icmpv6_rcv()
739 		if (!pskb_may_pull(skb, sizeof(struct ipv6hdr)))  in icmpv6_rcv()
741 		hdr = icmp6_hdr(skb);  in icmpv6_rcv()
750 		icmpv6_notify(skb, type, hdr->icmp6_code, hdr->icmp6_mtu);  in icmpv6_rcv()
758 		ndisc_rcv(skb);  in icmpv6_rcv()
762 		igmp6_event_query(skb);  in icmpv6_rcv()
766 		igmp6_event_report(skb);  in icmpv6_rcv()
791 		icmpv6_notify(skb, type, hdr->icmp6_code, hdr->icmp6_mtu);  in icmpv6_rcv()
798 		consume_skb(skb);  in icmpv6_rcv()
800 		kfree_skb(skb);  in icmpv6_rcv()
809 	kfree_skb(skb);  in icmpv6_rcv()