510 static int rawv6_push_pending_frames(struct sock *sk, struct flowi6 *fl6,  in rawv6_push_pending_frames()  argument
579 	csum = csum_ipv6_magic(&fl6->saddr, &fl6->daddr,  in rawv6_push_pending_frames()
580 			       total_len, fl6->flowi6_proto, tmp_csum);  in rawv6_push_pending_frames()
582 	if (csum == 0 && fl6->flowi6_proto == IPPROTO_UDP)  in rawv6_push_pending_frames()
594 			struct flowi6 *fl6, struct dst_entry **dstp,  in rawv6_send_hdrinc()  argument
606 		ipv6_local_error(sk, EMSGSIZE, fl6, rt->dst.dev->mtu);  in rawv6_send_hdrinc()
688 static int rawv6_probe_proto_opt(struct raw6_frag_vec *rfv, struct flowi6 *fl6)  in rawv6_probe_proto_opt()  argument
691 	switch (fl6->flowi6_proto) {  in rawv6_probe_proto_opt()
696 			fl6->fl6_icmp_type = rfv->c[0];  in rawv6_probe_proto_opt()
697 			fl6->fl6_icmp_code = rfv->c[1];  in rawv6_probe_proto_opt()
704 			fl6->fl6_mh_type = rfv->c[2];  in rawv6_probe_proto_opt()
753 	struct flowi6 fl6;  in rawv6_sendmsg()  local
775 	memset(&fl6, 0, sizeof(fl6));  in rawv6_sendmsg()
777 	fl6.flowi6_mark = READ_ONCE(sk->sk_mark);  in rawv6_sendmsg()
778 	fl6.flowi6_uid = sk->sk_uid;  in rawv6_sendmsg()
782 	ipc6.sockc.mark = fl6.flowi6_mark;  in rawv6_sendmsg()
805 			fl6.flowlabel = sin6->sin6_flowinfo&IPV6_FLOWINFO_MASK;  in rawv6_sendmsg()
806 			if (fl6.flowlabel&IPV6_FLOWLABEL_MASK) {  in rawv6_sendmsg()
807 				flowlabel = fl6_sock_lookup(sk, fl6.flowlabel);  in rawv6_sendmsg()
824 			fl6.flowi6_oif = sin6->sin6_scope_id;  in rawv6_sendmsg()
831 		fl6.flowlabel = np->flow_label;  in rawv6_sendmsg()
834 	if (fl6.flowi6_oif == 0)  in rawv6_sendmsg()
835 		fl6.flowi6_oif = sk->sk_bound_dev_if;  in rawv6_sendmsg()
843 		err = ip6_datagram_send_ctl(sock_net(sk), sk, msg, &fl6, &ipc6);  in rawv6_sendmsg()
848 		if ((fl6.flowlabel&IPV6_FLOWLABEL_MASK) && !flowlabel) {  in rawv6_sendmsg()
849 			flowlabel = fl6_sock_lookup(sk, fl6.flowlabel);  in rawv6_sendmsg()
864 	fl6.flowi6_proto = proto;  in rawv6_sendmsg()
865 	fl6.flowi6_mark = ipc6.sockc.mark;  in rawv6_sendmsg()
870 		err = rawv6_probe_proto_opt(&rfv, &fl6);  in rawv6_sendmsg()
876 		fl6.daddr = *daddr;  in rawv6_sendmsg()
878 		fl6.daddr.s6_addr[15] = 0x1; /* :: means loopback (BSD'ism) */  in rawv6_sendmsg()
879 	if (ipv6_addr_any(&fl6.saddr) && !ipv6_addr_any(&np->saddr))  in rawv6_sendmsg()
880 		fl6.saddr = np->saddr;  in rawv6_sendmsg()
882 	final_p = fl6_update_dst(&fl6, opt, &final);  in rawv6_sendmsg()
884 	if (!fl6.flowi6_oif && ipv6_addr_is_multicast(&fl6.daddr))  in rawv6_sendmsg()
885 		fl6.flowi6_oif = READ_ONCE(np->mcast_oif);  in rawv6_sendmsg()
886 	else if (!fl6.flowi6_oif)  in rawv6_sendmsg()
887 		fl6.flowi6_oif = READ_ONCE(np->ucast_oif);  in rawv6_sendmsg()
888 	security_sk_classify_flow(sk, flowi6_to_flowi_common(&fl6));  in rawv6_sendmsg()
891 		fl6.flowi6_flags |= FLOWI_FLAG_KNOWN_NH;  in rawv6_sendmsg()
896 	fl6.flowlabel = ip6_make_flowinfo(ipc6.tclass, fl6.flowlabel);  in rawv6_sendmsg()
898 	dst = ip6_dst_lookup_flow(sock_net(sk), sk, &fl6, final_p);  in rawv6_sendmsg()
904 		ipc6.hlimit = ip6_sk_dst_hoplimit(np, &fl6, dst);  in rawv6_sendmsg()
914 		err = rawv6_send_hdrinc(sk, msg, len, &fl6, &dst,  in rawv6_sendmsg()
920 			len, 0, &ipc6, &fl6, dst_rt6_info(dst),  in rawv6_sendmsg()
926 			err = rawv6_push_pending_frames(sk, &fl6, rp);  in rawv6_sendmsg()
937 		dst_confirm_neigh(dst, &fl6.daddr);  in rawv6_sendmsg()