157 	struct inet_sock *inet = inet_sk(skb->sk);  in ip_cmsg_recv_offset()
317 int ip_ra_control(struct sock *sk, unsigned char on,  in ip_ra_control()  argument
323 	if (sk->sk_type != SOCK_RAW || inet_sk(sk)->inet_num == IPPROTO_RAW)  in ip_ra_control()
333 		if (ra->sk == sk) {  in ip_ra_control()
340 			ra->sk = NULL;  in ip_ra_control()
345 				ra->destructor(sk);  in ip_ra_control()
351 			ra->saved_sk = sk;  in ip_ra_control()
360 	new_ra->sk = sk;  in ip_ra_control()
365 	sock_hold(sk);  in ip_ra_control()
371 void ip_icmp_error(struct sock *sk, struct sk_buff *skb, int err,  in ip_icmp_error()  argument
394 		if (sock_queue_err_skb(sk, skb) == 0)  in ip_icmp_error()
400 void ip_local_error(struct sock *sk, int err, __be32 daddr, __be16 port, u32 info)  in ip_local_error()  argument
402 	struct inet_sock *inet = inet_sk(sk);  in ip_local_error()
433 	if (sock_queue_err_skb(sk, skb))  in ip_local_error()
451 static bool ipv4_datagram_support_cmsg(const struct sock *sk,  in ipv4_datagram_support_cmsg()  argument
467 	if ((!(sk->sk_tsflags & SOF_TIMESTAMPING_OPT_CMSG)) ||  in ipv4_datagram_support_cmsg()
480 int ip_recv_error(struct sock *sk, struct msghdr *msg, int len, int *addr_len)  in ip_recv_error()  argument
492 	WARN_ON_ONCE(sk->sk_family == AF_INET6);  in ip_recv_error()
495 	skb = sock_dequeue_err_skb(sk);  in ip_recv_error()
508 	sock_recv_timestamp(msg, sk, skb);  in ip_recv_error()
525 	if (ipv4_datagram_support_cmsg(sk, skb, serr->ee.ee_origin)) {  in ip_recv_error()
528 		if (inet_sk(sk)->cmsg_flags)  in ip_recv_error()
572 static int do_ip_setsockopt(struct sock *sk, int level,  in do_ip_setsockopt()  argument
575 	struct inet_sock *inet = inet_sk(sk);  in do_ip_setsockopt()
618 		return ip_mroute_setsockopt(sk, optname, optval, optlen);  in do_ip_setsockopt()
623 	lock_sock(sk);  in do_ip_setsockopt()
632 		err = ip_options_get_from_user(sock_net(sk), &opt,  in do_ip_setsockopt()
637 						sock_owned_by_user(sk));  in do_ip_setsockopt()
639 			struct inet_connection_sock *icsk = inet_csk(sk);  in do_ip_setsockopt()
641 			if (sk->sk_family == PF_INET ||  in do_ip_setsockopt()
642 			    (!((1 << sk->sk_state) &  in do_ip_setsockopt()
650 				icsk->icsk_sync_mss(sk, icsk->icsk_pmtu_cookie);  in do_ip_setsockopt()
705 				inet_inc_convert_csum(sk);  in do_ip_setsockopt()
710 				inet_dec_convert_csum(sk);  in do_ip_setsockopt()
716 		if (sk->sk_type == SOCK_STREAM) {  in do_ip_setsockopt()
722 			sk->sk_priority = rt_tos2priority(val);  in do_ip_setsockopt()
723 			sk_dst_reset(sk);  in do_ip_setsockopt()
734 		if (sk->sk_type != SOCK_RAW) {  in do_ip_setsockopt()
741 		if (sk->sk_type != SOCK_RAW) {  in do_ip_setsockopt()
758 			skb_queue_purge(&sk->sk_error_queue);  in do_ip_setsockopt()
761 		if (sk->sk_type == SOCK_STREAM)  in do_ip_setsockopt()
791 		dev = dev_get_by_index(sock_net(sk), ifindex);  in do_ip_setsockopt()
798 		if (sk->sk_bound_dev_if)  in do_ip_setsockopt()
810 		if (sk->sk_type == SOCK_STREAM)  in do_ip_setsockopt()
843 			dev = ip_dev_find(sock_net(sk), mreq.imr_address.s_addr);  in do_ip_setsockopt()
847 			dev = dev_get_by_index(sock_net(sk), mreq.imr_ifindex);  in do_ip_setsockopt()
856 		if (sk->sk_bound_dev_if &&  in do_ip_setsockopt()
857 		    mreq.imr_ifindex != sk->sk_bound_dev_if)  in do_ip_setsockopt()
872 		if (inet_sk(sk)->is_icsk)  in do_ip_setsockopt()
888 			err = ip_mc_join_group(sk, &mreq);  in do_ip_setsockopt()
890 			err = ip_mc_leave_group(sk, &mreq);  in do_ip_setsockopt()
925 		err = ip_mc_msfilter(sk, msf, 0);  in do_ip_setsockopt()
955 			err = ip_mc_join_group(sk, &mreq);  in do_ip_setsockopt()
964 		err = ip_mc_source(add, omode, sk, &mreqs, 0);  in do_ip_setsockopt()
987 			err = ip_mc_join_group(sk, &mreq);  in do_ip_setsockopt()
989 			err = ip_mc_leave_group(sk, &mreq);  in do_ip_setsockopt()
1032 			err = ip_mc_join_group(sk, &mreq);  in do_ip_setsockopt()
1042 		err = ip_mc_source(add, omode, sk, &mreqs,  in do_ip_setsockopt()
1105 		err = ip_mc_msfilter(sk, msf, ifindex);  in do_ip_setsockopt()
1119 		err = ip_ra_control(sk, val ? 1 : 0, NULL);  in do_ip_setsockopt()
1131 		if (!ns_capable(sock_net(sk)->user_ns, CAP_NET_ADMIN))  in do_ip_setsockopt()
1133 		err = xfrm_user_policy(sk, optname, optval, optlen);  in do_ip_setsockopt()
1137 		if (!!val && !ns_capable(sock_net(sk)->user_ns, CAP_NET_RAW) &&  in do_ip_setsockopt()
1138 		    !ns_capable(sock_net(sk)->user_ns, CAP_NET_ADMIN)) {  in do_ip_setsockopt()
1159 	release_sock(sk);  in do_ip_setsockopt()
1165 	release_sock(sk);  in do_ip_setsockopt()
1180 void ipv4_pktinfo_prepare(const struct sock *sk, struct sk_buff *skb)  in ipv4_pktinfo_prepare()  argument
1183 	bool prepare = (inet_sk(sk)->cmsg_flags & IP_CMSG_PKTINFO) ||  in ipv4_pktinfo_prepare()
1184 		       ipv6_sk_rxinfo(sk);  in ipv4_pktinfo_prepare()
1196 int ip_setsockopt(struct sock *sk, int level,  in ip_setsockopt()  argument
1204 	err = do_ip_setsockopt(sk, level, optname, optval, optlen);  in ip_setsockopt()
1211 		lock_sock(sk);  in ip_setsockopt()
1212 		err = nf_setsockopt(sk, PF_INET, optname, optval, optlen);  in ip_setsockopt()
1213 		release_sock(sk);  in ip_setsockopt()
1221 int compat_ip_setsockopt(struct sock *sk, int level, int optname,  in compat_ip_setsockopt()  argument
1230 		return compat_mc_setsockopt(sk, level, optname, optval, optlen,  in compat_ip_setsockopt()
1233 	err = do_ip_setsockopt(sk, level, optname, optval, optlen);  in compat_ip_setsockopt()
1240 		lock_sock(sk);  in compat_ip_setsockopt()
1241 		err = compat_nf_setsockopt(sk, PF_INET, optname,  in compat_ip_setsockopt()
1243 		release_sock(sk);  in compat_ip_setsockopt()
1266 static int do_ip_getsockopt(struct sock *sk, int level, int optname,  in do_ip_getsockopt()  argument
1269 	struct inet_sock *inet = inet_sk(sk);  in do_ip_getsockopt()
1278 		return ip_mroute_getsockopt(sk, optname, optval, optlen);  in do_ip_getsockopt()
1287 	lock_sock(sk);  in do_ip_getsockopt()
1297 						     sock_owned_by_user(sk));  in do_ip_getsockopt()
1303 		release_sock(sk);  in do_ip_getsockopt()
1365 		dst = sk_dst_get(sk);  in do_ip_getsockopt()
1371 			release_sock(sk);  in do_ip_getsockopt()
1393 		release_sock(sk);  in do_ip_getsockopt()
1413 		err = ip_mc_msfget(sk, &msf,  in do_ip_getsockopt()
1429 		err = ip_mc_gsfget(sk, &gsf,  in do_ip_getsockopt()
1441 		release_sock(sk);  in do_ip_getsockopt()
1443 		if (sk->sk_type != SOCK_STREAM)  in do_ip_getsockopt()
1479 		release_sock(sk);  in do_ip_getsockopt()
1482 	release_sock(sk);  in do_ip_getsockopt()
1501 	release_sock(sk);  in do_ip_getsockopt()
1507 int ip_getsockopt(struct sock *sk, int level,  in ip_getsockopt()  argument
1512 	err = do_ip_getsockopt(sk, level, optname, optval, optlen, 0);  in ip_getsockopt()
1522 		lock_sock(sk);  in ip_getsockopt()
1523 		err = nf_getsockopt(sk, PF_INET, optname, optval,  in ip_getsockopt()
1525 		release_sock(sk);  in ip_getsockopt()
1536 int compat_ip_getsockopt(struct sock *sk, int level, int optname,  in compat_ip_getsockopt()  argument
1542 		return compat_mc_getsockopt(sk, level, optname, optval, optlen,  in compat_ip_getsockopt()
1545 	err = do_ip_getsockopt(sk, level, optname, optval, optlen,  in compat_ip_getsockopt()
1557 		lock_sock(sk);  in compat_ip_getsockopt()
1558 		err = compat_nf_getsockopt(sk, PF_INET, optname, optval, &len);  in compat_ip_getsockopt()
1559 		release_sock(sk);  in compat_ip_getsockopt()