82 int ping_get_port(struct sock *sk, unsigned short ident)  in ping_get_port()  argument
89 	isk = inet_sk(sk);  in ping_get_port()
98 			hlist = ping_hashslot(&ping_table, sock_net(sk),  in ping_get_port()
116 		hlist = ping_hashslot(&ping_table, sock_net(sk), ident);  in ping_get_port()
125 			    (sk2 != sk) &&  in ping_get_port()
126 			    (!sk2->sk_reuse || !sk->sk_reuse))  in ping_get_port()
133 	if (sk_unhashed(sk)) {  in ping_get_port()
135 		sock_hold(sk);  in ping_get_port()
136 		hlist_nulls_add_head(&sk->sk_nulls_node, hlist);  in ping_get_port()
137 		sock_prot_inuse_add(sock_net(sk), sk->sk_prot, 1);  in ping_get_port()
148 void ping_hash(struct sock *sk)  in ping_hash()  argument
150 	pr_debug("ping_hash(sk->port=%u)\n", inet_sk(sk)->inet_num);  in ping_hash()
154 void ping_unhash(struct sock *sk)  in ping_unhash()  argument
156 	struct inet_sock *isk = inet_sk(sk);  in ping_unhash()
158 	if (sk_hashed(sk)) {  in ping_unhash()
160 		hlist_nulls_del(&sk->sk_nulls_node);  in ping_unhash()
161 		sk_nulls_node_init(&sk->sk_nulls_node);  in ping_unhash()
162 		sock_put(sk);  in ping_unhash()
165 		sock_prot_inuse_add(sock_net(sk), sk->sk_prot, -1);  in ping_unhash()
174 	struct sock *sk = NULL;  in ping_lookup()  local
191 	ping_portaddr_for_each_entry(sk, hnode, hslot) {  in ping_lookup()
192 		isk = inet_sk(sk);  in ping_lookup()
199 		    sk->sk_family == AF_INET) {  in ping_lookup()
200 			pr_debug("found: %p: num=%d, daddr=%pI4, dif=%d\n", sk,  in ping_lookup()
202 				 sk->sk_bound_dev_if);  in ping_lookup()
209 			   sk->sk_family == AF_INET6) {  in ping_lookup()
211 			pr_debug("found: %p: num=%d, daddr=%pI6c, dif=%d\n", sk,  in ping_lookup()
213 				 &sk->sk_v6_rcv_saddr,  in ping_lookup()
214 				 sk->sk_bound_dev_if);  in ping_lookup()
216 			if (!ipv6_addr_any(&sk->sk_v6_rcv_saddr) &&  in ping_lookup()
217 			    !ipv6_addr_equal(&sk->sk_v6_rcv_saddr,  in ping_lookup()
225 		if (sk->sk_bound_dev_if && sk->sk_bound_dev_if != dif)  in ping_lookup()
228 		sock_hold(sk);  in ping_lookup()
232 	sk = NULL;  in ping_lookup()
236 	return sk;  in ping_lookup()
254 int ping_init_sock(struct sock *sk)  in ping_init_sock()  argument
256 	struct net *net = sock_net(sk);  in ping_init_sock()
263 	if (sk->sk_family == AF_INET6)  in ping_init_sock()
264 		sk->sk_ipv6only = 1;  in ping_init_sock()
291 void ping_close(struct sock *sk, long timeout)  in ping_close()  argument
294 		 inet_sk(sk), inet_sk(sk)->inet_num);  in ping_close()
295 	pr_debug("isk->refcnt = %d\n", sk->sk_refcnt.counter);  in ping_close()
297 	sk_common_release(sk);  in ping_close()
302 static int ping_check_bind_addr(struct sock *sk, struct inet_sock *isk,  in ping_check_bind_addr()  argument
304 	struct net *net = sock_net(sk);  in ping_check_bind_addr()
305 	if (sk->sk_family == AF_INET) {  in ping_check_bind_addr()
318 			 sk, &addr->sin_addr.s_addr, ntohs(addr->sin_port));  in ping_check_bind_addr()
333 	} else if (sk->sk_family == AF_INET6) {  in ping_check_bind_addr()
345 			 sk, addr->sin6_addr.s6_addr, ntohs(addr->sin6_port));  in ping_check_bind_addr()
372 			sk->sk_bound_dev_if = addr->sin6_scope_id;  in ping_check_bind_addr()
380 static void ping_set_saddr(struct sock *sk, struct sockaddr *saddr)  in ping_set_saddr()  argument
383 		struct inet_sock *isk = inet_sk(sk);  in ping_set_saddr()
389 		struct ipv6_pinfo *np = inet6_sk(sk);  in ping_set_saddr()
390 		sk->sk_v6_rcv_saddr = np->saddr = addr->sin6_addr;  in ping_set_saddr()
395 static void ping_clear_saddr(struct sock *sk, int dif)  in ping_clear_saddr()  argument
397 	sk->sk_bound_dev_if = dif;  in ping_clear_saddr()
398 	if (sk->sk_family == AF_INET) {  in ping_clear_saddr()
399 		struct inet_sock *isk = inet_sk(sk);  in ping_clear_saddr()
402 	} else if (sk->sk_family == AF_INET6) {  in ping_clear_saddr()
403 		struct ipv6_pinfo *np = inet6_sk(sk);  in ping_clear_saddr()
404 		memset(&sk->sk_v6_rcv_saddr, 0, sizeof(sk->sk_v6_rcv_saddr));  in ping_clear_saddr()
414 int ping_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len)  in ping_bind()  argument
416 	struct inet_sock *isk = inet_sk(sk);  in ping_bind()
419 	int dif = sk->sk_bound_dev_if;  in ping_bind()
421 	err = ping_check_bind_addr(sk, isk, uaddr, addr_len);  in ping_bind()
425 	lock_sock(sk);  in ping_bind()
432 	ping_set_saddr(sk, uaddr);  in ping_bind()
434 	if (ping_get_port(sk, snum) != 0) {  in ping_bind()
435 		ping_clear_saddr(sk, dif);  in ping_bind()
441 		 (int)sk->sk_bound_dev_if);  in ping_bind()
444 	if (sk->sk_family == AF_INET && isk->inet_rcv_saddr)  in ping_bind()
445 		sk->sk_userlocks |= SOCK_BINDADDR_LOCK;  in ping_bind()
447 	if (sk->sk_family == AF_INET6 && !ipv6_addr_any(&sk->sk_v6_rcv_saddr))  in ping_bind()
448 		sk->sk_userlocks |= SOCK_BINDADDR_LOCK;  in ping_bind()
452 		sk->sk_userlocks |= SOCK_BINDPORT_LOCK;  in ping_bind()
458 	if (sk->sk_family == AF_INET6)  in ping_bind()
459 		memset(&sk->sk_v6_daddr, 0, sizeof(sk->sk_v6_daddr));  in ping_bind()
462 	sk_dst_reset(sk);  in ping_bind()
464 	release_sock(sk);  in ping_bind()
493 	struct sock *sk;  in ping_err()  local
520 	sk = ping_lookup(net, skb, ntohs(icmph->un.echo.id));  in ping_err()
521 	if (!sk) {  in ping_err()
525 	pr_debug("err on socket %p\n", sk);  in ping_err()
529 	inet_sock = inet_sk(sk);  in ping_err()
549 				ipv4_sk_update_pmtu(skb, sk, info);  in ping_err()
565 			ipv4_sk_redirect(skb, sk);  in ping_err()
580 	    (family == AF_INET6 && !inet6_sk(sk)->recverr)) {  in ping_err()
581 		if (!harderr || sk->sk_state != TCP_ESTABLISHED)  in ping_err()
585 			ip_icmp_error(sk, skb, err, 0 /* no remote port */,  in ping_err()
589 			pingv6_ops.ipv6_icmp_error(sk, skb, err, 0,  in ping_err()
594 	sk->sk_err = err;  in ping_err()
595 	sk->sk_error_report(sk);  in ping_err()
597 	sock_put(sk);  in ping_err()
643 static int ping_v4_push_pending_frames(struct sock *sk, struct pingfakehdr *pfh,  in ping_v4_push_pending_frames()  argument
646 	struct sk_buff *skb = skb_peek(&sk->sk_write_queue);  in ping_v4_push_pending_frames()
653 	return ip_push_pending_frames(sk, fl4);  in ping_v4_push_pending_frames()
697 static int ping_v4_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)  in ping_v4_sendmsg()  argument
699 	struct net *net = sock_net(sk);  in ping_v4_sendmsg()
701 	struct inet_sock *inet = inet_sk(sk);  in ping_v4_sendmsg()
732 		if (sk->sk_state != TCP_ESTABLISHED)  in ping_v4_sendmsg()
740 	ipc.oif = sk->sk_bound_dev_if;  in ping_v4_sendmsg()
745 	sock_tx_timestamp(sk, &ipc.tx_flags);  in ping_v4_sendmsg()
748 		err = ip_cmsg_send(sock_net(sk), msg, &ipc, false);  in ping_v4_sendmsg()
778 	if (sock_flag(sk, SOCK_LOCALROUTE) ||  in ping_v4_sendmsg()
792 	flowi4_init_output(&fl4, ipc.oif, sk->sk_mark, tos,  in ping_v4_sendmsg()
793 			   RT_SCOPE_UNIVERSE, sk->sk_protocol,  in ping_v4_sendmsg()
794 			   inet_sk_flowi_flags(sk), faddr, saddr, 0, 0);  in ping_v4_sendmsg()
796 	security_sk_classify_flow(sk, flowi4_to_flowi(&fl4));  in ping_v4_sendmsg()
797 	rt = ip_route_output_flow(net, &fl4, sk);  in ping_v4_sendmsg()
808 	    !sock_flag(sk, SOCK_BROADCAST))  in ping_v4_sendmsg()
818 	lock_sock(sk);  in ping_v4_sendmsg()
829 	err = ip_append_data(sk, &fl4, ping_getfrag, &pfh, len,  in ping_v4_sendmsg()
832 		ip_flush_pending_frames(sk);  in ping_v4_sendmsg()
834 		err = ping_v4_push_pending_frames(sk, &pfh, &fl4);  in ping_v4_sendmsg()
835 	release_sock(sk);  in ping_v4_sendmsg()
842 		icmp_out_count(sock_net(sk), user_icmph.type);  in ping_v4_sendmsg()
855 int ping_recvmsg(struct sock *sk, struct msghdr *msg, size_t len, int noblock,  in ping_recvmsg()  argument
858 	struct inet_sock *isk = inet_sk(sk);  in ping_recvmsg()
859 	int family = sk->sk_family;  in ping_recvmsg()
870 		return inet_recv_error(sk, msg, len, addr_len);  in ping_recvmsg()
872 	skb = skb_recv_datagram(sk, flags, noblock, &err);  in ping_recvmsg()
887 	sock_recv_timestamp(msg, sk, skb);  in ping_recvmsg()
906 		struct ipv6_pinfo *np = inet6_sk(sk);  in ping_recvmsg()
923 		if (inet6_sk(sk)->rxopt.all)  in ping_recvmsg()
924 			pingv6_ops.ip6_datagram_recv_common_ctl(sk, msg, skb);  in ping_recvmsg()
926 		    inet6_sk(sk)->rxopt.all)  in ping_recvmsg()
927 			pingv6_ops.ip6_datagram_recv_specific_ctl(sk, msg, skb);  in ping_recvmsg()
938 	skb_free_datagram(sk, skb);  in ping_recvmsg()
945 int ping_queue_rcv_skb(struct sock *sk, struct sk_buff *skb)  in ping_queue_rcv_skb()  argument
948 		 inet_sk(sk), inet_sk(sk)->inet_num, skb);  in ping_queue_rcv_skb()
949 	if (sock_queue_rcv_skb(sk, skb) < 0) {  in ping_queue_rcv_skb()
965 	struct sock *sk;  in ping_rcv()  local
977 	sk = ping_lookup(net, skb, ntohs(icmph->un.echo.id));  in ping_rcv()
978 	if (sk) {  in ping_rcv()
981 		pr_debug("rcv on socket %p\n", sk);  in ping_rcv()
983 			ping_queue_rcv_skb(sk, skb2);  in ping_rcv()
984 		sock_put(sk);  in ping_rcv()
1018 	struct sock *sk;  in ping_get_first()  local
1032 		sk_nulls_for_each(sk, node, hslot) {  in ping_get_first()
1033 			if (net_eq(sock_net(sk), net) &&  in ping_get_first()
1034 			    sk->sk_family == state->family)  in ping_get_first()
1038 	sk = NULL;  in ping_get_first()
1040 	return sk;  in ping_get_first()
1043 static struct sock *ping_get_next(struct seq_file *seq, struct sock *sk)  in ping_get_next()  argument
1049 		sk = sk_nulls_next(sk);  in ping_get_next()
1050 	} while (sk && (!net_eq(sock_net(sk), net)));  in ping_get_next()
1052 	if (!sk)  in ping_get_next()
1054 	return sk;  in ping_get_next()
1059 	struct sock *sk = ping_get_first(seq, 0);  in ping_get_idx()  local
1061 	if (sk)  in ping_get_idx()
1062 		while (pos && (sk = ping_get_next(seq, sk)) != NULL)  in ping_get_idx()
1064 	return pos ? NULL : sk;  in ping_get_idx()
1086 	struct sock *sk;  in ping_seq_next()  local
1089 		sk = ping_get_idx(seq, 0);  in ping_seq_next()
1091 		sk = ping_get_next(seq, v);  in ping_seq_next()
1094 	return sk;  in ping_seq_next()