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()
371 			sk->sk_bound_dev_if = addr->sin6_scope_id;  in ping_check_bind_addr()
379 static void ping_set_saddr(struct sock *sk, struct sockaddr *saddr)  in ping_set_saddr()  argument
382 		struct inet_sock *isk = inet_sk(sk);  in ping_set_saddr()
388 		struct ipv6_pinfo *np = inet6_sk(sk);  in ping_set_saddr()
389 		sk->sk_v6_rcv_saddr = np->saddr = addr->sin6_addr;  in ping_set_saddr()
394 static void ping_clear_saddr(struct sock *sk, int dif)  in ping_clear_saddr()  argument
396 	sk->sk_bound_dev_if = dif;  in ping_clear_saddr()
397 	if (sk->sk_family == AF_INET) {  in ping_clear_saddr()
398 		struct inet_sock *isk = inet_sk(sk);  in ping_clear_saddr()
401 	} else if (sk->sk_family == AF_INET6) {  in ping_clear_saddr()
402 		struct ipv6_pinfo *np = inet6_sk(sk);  in ping_clear_saddr()
403 		memset(&sk->sk_v6_rcv_saddr, 0, sizeof(sk->sk_v6_rcv_saddr));  in ping_clear_saddr()
413 int ping_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len)  in ping_bind()  argument
415 	struct inet_sock *isk = inet_sk(sk);  in ping_bind()
418 	int dif = sk->sk_bound_dev_if;  in ping_bind()
420 	err = ping_check_bind_addr(sk, isk, uaddr, addr_len);  in ping_bind()
424 	lock_sock(sk);  in ping_bind()
431 	ping_set_saddr(sk, uaddr);  in ping_bind()
433 	if (ping_get_port(sk, snum) != 0) {  in ping_bind()
434 		ping_clear_saddr(sk, dif);  in ping_bind()
440 		 (int)sk->sk_bound_dev_if);  in ping_bind()
443 	if (sk->sk_family == AF_INET && isk->inet_rcv_saddr)  in ping_bind()
444 		sk->sk_userlocks |= SOCK_BINDADDR_LOCK;  in ping_bind()
446 	if (sk->sk_family == AF_INET6 && !ipv6_addr_any(&sk->sk_v6_rcv_saddr))  in ping_bind()
447 		sk->sk_userlocks |= SOCK_BINDADDR_LOCK;  in ping_bind()
451 		sk->sk_userlocks |= SOCK_BINDPORT_LOCK;  in ping_bind()
457 	if (sk->sk_family == AF_INET6)  in ping_bind()
458 		memset(&sk->sk_v6_daddr, 0, sizeof(sk->sk_v6_daddr));  in ping_bind()
461 	sk_dst_reset(sk);  in ping_bind()
463 	release_sock(sk);  in ping_bind()
492 	struct sock *sk;  in ping_err()  local
519 	sk = ping_lookup(net, skb, ntohs(icmph->un.echo.id));  in ping_err()
520 	if (!sk) {  in ping_err()
524 	pr_debug("err on socket %p\n", sk);  in ping_err()
528 	inet_sock = inet_sk(sk);  in ping_err()
548 				ipv4_sk_update_pmtu(skb, sk, info);  in ping_err()
564 			ipv4_sk_redirect(skb, sk);  in ping_err()
579 	    (family == AF_INET6 && !inet6_sk(sk)->recverr)) {  in ping_err()
580 		if (!harderr || sk->sk_state != TCP_ESTABLISHED)  in ping_err()
584 			ip_icmp_error(sk, skb, err, 0 /* no remote port */,  in ping_err()
588 			pingv6_ops.ipv6_icmp_error(sk, skb, err, 0,  in ping_err()
593 	sk->sk_err = err;  in ping_err()
594 	sk->sk_error_report(sk);  in ping_err()
596 	sock_put(sk);  in ping_err()
642 static int ping_v4_push_pending_frames(struct sock *sk, struct pingfakehdr *pfh,  in ping_v4_push_pending_frames()  argument
645 	struct sk_buff *skb = skb_peek(&sk->sk_write_queue);  in ping_v4_push_pending_frames()
652 	return ip_push_pending_frames(sk, fl4);  in ping_v4_push_pending_frames()
696 static int ping_v4_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)  in ping_v4_sendmsg()  argument
698 	struct net *net = sock_net(sk);  in ping_v4_sendmsg()
700 	struct inet_sock *inet = inet_sk(sk);  in ping_v4_sendmsg()
731 		if (sk->sk_state != TCP_ESTABLISHED)  in ping_v4_sendmsg()
739 	ipc.oif = sk->sk_bound_dev_if;  in ping_v4_sendmsg()
744 	sock_tx_timestamp(sk, &ipc.tx_flags);  in ping_v4_sendmsg()
747 		err = ip_cmsg_send(sock_net(sk), msg, &ipc, false);  in ping_v4_sendmsg()
777 	if (sock_flag(sk, SOCK_LOCALROUTE) ||  in ping_v4_sendmsg()
791 	flowi4_init_output(&fl4, ipc.oif, sk->sk_mark, tos,  in ping_v4_sendmsg()
792 			   RT_SCOPE_UNIVERSE, sk->sk_protocol,  in ping_v4_sendmsg()
793 			   inet_sk_flowi_flags(sk), faddr, saddr, 0, 0);  in ping_v4_sendmsg()
795 	security_sk_classify_flow(sk, flowi4_to_flowi(&fl4));  in ping_v4_sendmsg()
796 	rt = ip_route_output_flow(net, &fl4, sk);  in ping_v4_sendmsg()
807 	    !sock_flag(sk, SOCK_BROADCAST))  in ping_v4_sendmsg()
817 	lock_sock(sk);  in ping_v4_sendmsg()
828 	err = ip_append_data(sk, &fl4, ping_getfrag, &pfh, len,  in ping_v4_sendmsg()
831 		ip_flush_pending_frames(sk);  in ping_v4_sendmsg()
833 		err = ping_v4_push_pending_frames(sk, &pfh, &fl4);  in ping_v4_sendmsg()
834 	release_sock(sk);  in ping_v4_sendmsg()
841 		icmp_out_count(sock_net(sk), user_icmph.type);  in ping_v4_sendmsg()
854 int ping_recvmsg(struct sock *sk, struct msghdr *msg, size_t len, int noblock,  in ping_recvmsg()  argument
857 	struct inet_sock *isk = inet_sk(sk);  in ping_recvmsg()
858 	int family = sk->sk_family;  in ping_recvmsg()
869 		return inet_recv_error(sk, msg, len, addr_len);  in ping_recvmsg()
871 	skb = skb_recv_datagram(sk, flags, noblock, &err);  in ping_recvmsg()
886 	sock_recv_timestamp(msg, sk, skb);  in ping_recvmsg()
905 		struct ipv6_pinfo *np = inet6_sk(sk);  in ping_recvmsg()
922 		if (inet6_sk(sk)->rxopt.all)  in ping_recvmsg()
923 			pingv6_ops.ip6_datagram_recv_common_ctl(sk, msg, skb);  in ping_recvmsg()
925 		    inet6_sk(sk)->rxopt.all)  in ping_recvmsg()
926 			pingv6_ops.ip6_datagram_recv_specific_ctl(sk, msg, skb);  in ping_recvmsg()
937 	skb_free_datagram(sk, skb);  in ping_recvmsg()
944 int ping_queue_rcv_skb(struct sock *sk, struct sk_buff *skb)  in ping_queue_rcv_skb()  argument
947 		 inet_sk(sk), inet_sk(sk)->inet_num, skb);  in ping_queue_rcv_skb()
948 	if (sock_queue_rcv_skb(sk, skb) < 0) {  in ping_queue_rcv_skb()
964 	struct sock *sk;  in ping_rcv()  local
976 	sk = ping_lookup(net, skb, ntohs(icmph->un.echo.id));  in ping_rcv()
977 	if (sk) {  in ping_rcv()
980 		pr_debug("rcv on socket %p\n", sk);  in ping_rcv()
982 			ping_queue_rcv_skb(sk, skb2);  in ping_rcv()
983 		sock_put(sk);  in ping_rcv()
1017 	struct sock *sk;  in ping_get_first()  local
1031 		sk_nulls_for_each(sk, node, hslot) {  in ping_get_first()
1032 			if (net_eq(sock_net(sk), net) &&  in ping_get_first()
1033 			    sk->sk_family == state->family)  in ping_get_first()
1037 	sk = NULL;  in ping_get_first()
1039 	return sk;  in ping_get_first()
1042 static struct sock *ping_get_next(struct seq_file *seq, struct sock *sk)  in ping_get_next()  argument
1048 		sk = sk_nulls_next(sk);  in ping_get_next()
1049 	} while (sk && (!net_eq(sock_net(sk), net)));  in ping_get_next()
1051 	if (!sk)  in ping_get_next()
1053 	return sk;  in ping_get_next()
1058 	struct sock *sk = ping_get_first(seq, 0);  in ping_get_idx()  local
1060 	if (sk)  in ping_get_idx()
1061 		while (pos && (sk = ping_get_next(seq, sk)) != NULL)  in ping_get_idx()
1063 	return pos ? NULL : sk;  in ping_get_idx()
1085 	struct sock *sk;  in ping_seq_next()  local
1088 		sk = ping_get_idx(seq, 0);  in ping_seq_next()
1090 		sk = ping_get_next(seq, v);  in ping_seq_next()
1093 	return sk;  in ping_seq_next()