73 static void	tcp_v6_send_reset(const struct sock *sk, struct sk_buff *skb);
74 static void	tcp_v6_reqsk_send_ack(const struct sock *sk, struct sk_buff *skb,
77 static int	tcp_v6_do_rcv(struct sock *sk, struct sk_buff *skb);
85 static struct tcp_md5sig_key *tcp_v6_md5_do_lookup(const struct sock *sk,  in tcp_v6_md5_do_lookup()  argument
92 static void inet6_sk_rx_dst_set(struct sock *sk, const struct sk_buff *skb)  in inet6_sk_rx_dst_set()  argument
99 		sk->sk_rx_dst = dst;  in inet6_sk_rx_dst_set()
100 		inet_sk(sk)->rx_dst_ifindex = skb->skb_iif;  in inet6_sk_rx_dst_set()
101 		inet6_sk(sk)->rx_dst_cookie = rt6_get_cookie(rt);  in inet6_sk_rx_dst_set()
113 static int tcp_v6_connect(struct sock *sk, struct sockaddr *uaddr,  in tcp_v6_connect()  argument
117 	struct inet_sock *inet = inet_sk(sk);  in tcp_v6_connect()
118 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_v6_connect()
119 	struct ipv6_pinfo *np = inet6_sk(sk);  in tcp_v6_connect()
120 	struct tcp_sock *tp = tcp_sk(sk);  in tcp_v6_connect()
141 			flowlabel = fl6_sock_lookup(sk, fl6.flowlabel);  in tcp_v6_connect()
166 			if (sk->sk_bound_dev_if &&  in tcp_v6_connect()
167 			    sk->sk_bound_dev_if != usin->sin6_scope_id)  in tcp_v6_connect()
170 			sk->sk_bound_dev_if = usin->sin6_scope_id;  in tcp_v6_connect()
174 		if (!sk->sk_bound_dev_if)  in tcp_v6_connect()
179 	    !ipv6_addr_equal(&sk->sk_v6_daddr, &usin->sin6_addr)) {  in tcp_v6_connect()
185 	sk->sk_v6_daddr = usin->sin6_addr;  in tcp_v6_connect()
196 		SOCK_DEBUG(sk, "connect: ipv4 mapped\n");  in tcp_v6_connect()
198 		if (__ipv6_only_sock(sk))  in tcp_v6_connect()
206 		sk->sk_backlog_rcv = tcp_v4_do_rcv;  in tcp_v6_connect()
211 		err = tcp_v4_connect(sk, (struct sockaddr *)&sin, sizeof(sin));  in tcp_v6_connect()
216 			sk->sk_backlog_rcv = tcp_v6_do_rcv;  in tcp_v6_connect()
222 		np->saddr = sk->sk_v6_rcv_saddr;  in tcp_v6_connect()
227 	if (!ipv6_addr_any(&sk->sk_v6_rcv_saddr))  in tcp_v6_connect()
228 		saddr = &sk->sk_v6_rcv_saddr;  in tcp_v6_connect()
231 	fl6.daddr = sk->sk_v6_daddr;  in tcp_v6_connect()
233 	fl6.flowi6_oif = sk->sk_bound_dev_if;  in tcp_v6_connect()
234 	fl6.flowi6_mark = sk->sk_mark;  in tcp_v6_connect()
238 	opt = rcu_dereference_protected(np->opt, sock_owned_by_user(sk));  in tcp_v6_connect()
241 	security_sk_classify_flow(sk, flowi6_to_flowi(&fl6));  in tcp_v6_connect()
243 	dst = ip6_dst_lookup_flow(sk, &fl6, final_p);  in tcp_v6_connect()
251 		sk->sk_v6_rcv_saddr = *saddr;  in tcp_v6_connect()
258 	sk->sk_gso_type = SKB_GSO_TCPV6;  in tcp_v6_connect()
259 	ip6_dst_store(sk, dst, NULL, NULL);  in tcp_v6_connect()
263 	    ipv6_addr_equal(&fl6.daddr, &sk->sk_v6_daddr))  in tcp_v6_connect()
264 		tcp_fetch_timewait_stamp(sk, dst);  in tcp_v6_connect()
275 	tcp_set_state(sk, TCP_SYN_SENT);  in tcp_v6_connect()
276 	err = inet6_hash_connect(&tcp_death_row, sk);  in tcp_v6_connect()
280 	sk_set_txhash(sk);  in tcp_v6_connect()
284 							     sk->sk_v6_daddr.s6_addr32,  in tcp_v6_connect()
288 	err = tcp_connect(sk);  in tcp_v6_connect()
295 	tcp_set_state(sk, TCP_CLOSE);  in tcp_v6_connect()
296 	__sk_dst_reset(sk);  in tcp_v6_connect()
299 	sk->sk_route_caps = 0;  in tcp_v6_connect()
303 static void tcp_v6_mtu_reduced(struct sock *sk)  in tcp_v6_mtu_reduced()  argument
307 	if ((1 << sk->sk_state) & (TCPF_LISTEN | TCPF_CLOSE))  in tcp_v6_mtu_reduced()
310 	dst = inet6_csk_update_pmtu(sk, tcp_sk(sk)->mtu_info);  in tcp_v6_mtu_reduced()
314 	if (inet_csk(sk)->icsk_pmtu_cookie > dst_mtu(dst)) {  in tcp_v6_mtu_reduced()
315 		tcp_sync_mss(sk, dst_mtu(dst));  in tcp_v6_mtu_reduced()
316 		tcp_simple_retransmit(sk);  in tcp_v6_mtu_reduced()
330 	struct sock *sk;  in tcp_v6_err()  local
334 	sk = __inet6_lookup_established(net, &tcp_hashinfo,  in tcp_v6_err()
339 	if (!sk) {  in tcp_v6_err()
345 	if (sk->sk_state == TCP_TIME_WAIT) {  in tcp_v6_err()
346 		inet_twsk_put(inet_twsk(sk));  in tcp_v6_err()
351 	if (sk->sk_state == TCP_NEW_SYN_RECV)  in tcp_v6_err()
352 		return tcp_req_err(sk, seq, fatal);  in tcp_v6_err()
354 	bh_lock_sock(sk);  in tcp_v6_err()
355 	if (sock_owned_by_user(sk) && type != ICMPV6_PKT_TOOBIG)  in tcp_v6_err()
358 	if (sk->sk_state == TCP_CLOSE)  in tcp_v6_err()
361 	if (ipv6_hdr(skb)->hop_limit < inet6_sk(sk)->min_hopcount) {  in tcp_v6_err()
366 	tp = tcp_sk(sk);  in tcp_v6_err()
370 	if (sk->sk_state != TCP_LISTEN &&  in tcp_v6_err()
376 	np = inet6_sk(sk);  in tcp_v6_err()
379 		struct dst_entry *dst = __sk_dst_check(sk, np->dst_cookie);  in tcp_v6_err()
382 			dst->ops->redirect(dst, sk, skb);  in tcp_v6_err()
391 		if (sk->sk_state == TCP_LISTEN)  in tcp_v6_err()
394 		if (!ip6_sk_accept_pmtu(sk))  in tcp_v6_err()
398 		if (!sock_owned_by_user(sk))  in tcp_v6_err()
399 			tcp_v6_mtu_reduced(sk);  in tcp_v6_err()
402 			sock_hold(sk);  in tcp_v6_err()
408 	switch (sk->sk_state) {  in tcp_v6_err()
414 		if (fastopen && !fastopen->sk)  in tcp_v6_err()
417 		if (!sock_owned_by_user(sk)) {  in tcp_v6_err()
418 			sk->sk_err = err;  in tcp_v6_err()
419 			sk->sk_error_report(sk);		/* Wake people up to see the error (see connect in sock.c) */  in tcp_v6_err()
421 			tcp_done(sk);  in tcp_v6_err()
423 			sk->sk_err_soft = err;  in tcp_v6_err()
427 	if (!sock_owned_by_user(sk) && np->recverr) {  in tcp_v6_err()
428 		sk->sk_err = err;  in tcp_v6_err()
429 		sk->sk_error_report(sk);  in tcp_v6_err()
431 		sk->sk_err_soft = err;  in tcp_v6_err()
434 	bh_unlock_sock(sk);  in tcp_v6_err()
435 	sock_put(sk);  in tcp_v6_err()
439 static int tcp_v6_send_synack(const struct sock *sk, struct dst_entry *dst,  in tcp_v6_send_synack()  argument
446 	struct ipv6_pinfo *np = inet6_sk(sk);  in tcp_v6_send_synack()
452 	if (!dst && (dst = inet6_csk_route_req(sk, fl6, req,  in tcp_v6_send_synack()
456 	skb = tcp_make_synack(sk, dst, req, foc, attach_req);  in tcp_v6_send_synack()
467 		err = ip6_xmit(sk, skb, fl6, rcu_dereference(np->opt),  in tcp_v6_send_synack()
484 static struct tcp_md5sig_key *tcp_v6_md5_do_lookup(const struct sock *sk,  in tcp_v6_md5_do_lookup()  argument
487 	return tcp_md5_do_lookup(sk, (union tcp_md5_addr *)addr, AF_INET6);  in tcp_v6_md5_do_lookup()
490 static struct tcp_md5sig_key *tcp_v6_md5_lookup(const struct sock *sk,  in tcp_v6_md5_lookup()  argument
493 	return tcp_v6_md5_do_lookup(sk, &addr_sk->sk_v6_daddr);  in tcp_v6_md5_lookup()
496 static int tcp_v6_parse_md5_keys(struct sock *sk, char __user *optval,  in tcp_v6_parse_md5_keys()  argument
513 			return tcp_md5_do_del(sk, (union tcp_md5_addr *)&sin6->sin6_addr.s6_addr32[3],  in tcp_v6_parse_md5_keys()
515 		return tcp_md5_do_del(sk, (union tcp_md5_addr *)&sin6->sin6_addr,  in tcp_v6_parse_md5_keys()
523 		return tcp_md5_do_add(sk, (union tcp_md5_addr *)&sin6->sin6_addr.s6_addr32[3],  in tcp_v6_parse_md5_keys()
526 	return tcp_md5_do_add(sk, (union tcp_md5_addr *)&sin6->sin6_addr,  in tcp_v6_parse_md5_keys()
583 			       const struct sock *sk,  in tcp_v6_md5_hash_skb()  argument
591 	if (sk) { /* valid for establish/request sockets */  in tcp_v6_md5_hash_skb()
592 		saddr = &sk->sk_v6_rcv_saddr;  in tcp_v6_md5_hash_skb()
593 		daddr = &sk->sk_v6_daddr;  in tcp_v6_md5_hash_skb()
631 static bool tcp_v6_inbound_md5_hash(const struct sock *sk,  in tcp_v6_inbound_md5_hash()  argument
642 	hash_expected = tcp_v6_md5_do_lookup(sk, &ip6h->saddr);  in tcp_v6_inbound_md5_hash()
650 		NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_TCPMD5NOTFOUND);  in tcp_v6_inbound_md5_hash()
655 		NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_TCPMD5UNEXPECTED);  in tcp_v6_inbound_md5_hash()
700 static struct dst_entry *tcp_v6_route_req(const struct sock *sk,  in tcp_v6_route_req()  argument
707 	return inet6_csk_route_req(sk, &fl->u.ip6, req, IPPROTO_TCP);  in tcp_v6_route_req()
736 static void tcp_v6_send_response(const struct sock *sk, struct sk_buff *skb, u32 seq,  in tcp_v6_send_response()  argument
745 	struct net *net = sk ? sock_net(sk) : dev_net(skb_dst(skb)->dev);  in tcp_v6_send_response()
835 static void tcp_v6_send_reset(const struct sock *sk, struct sk_buff *skb)  in tcp_v6_send_reset()  argument
855 	if (!sk && !ipv6_unicast_destination(skb))  in tcp_v6_send_reset()
860 	if (!sk && hash_location) {  in tcp_v6_send_reset()
884 		key = sk ? tcp_v6_md5_do_lookup(sk, &ipv6h->saddr) : NULL;  in tcp_v6_send_reset()
894 	oif = sk ? sk->sk_bound_dev_if : 0;  in tcp_v6_send_reset()
895 	tcp_v6_send_response(sk, skb, seq, ack_seq, 0, 0, 0, oif, key, 1, 0, 0);  in tcp_v6_send_reset()
906 static void tcp_v6_send_ack(const struct sock *sk, struct sk_buff *skb, u32 seq,  in tcp_v6_send_ack()  argument
911 	tcp_v6_send_response(sk, skb, seq, ack, win, tsval, tsecr, oif, key, 0,  in tcp_v6_send_ack()
915 static void tcp_v6_timewait_ack(struct sock *sk, struct sk_buff *skb)  in tcp_v6_timewait_ack()  argument
917 	struct inet_timewait_sock *tw = inet_twsk(sk);  in tcp_v6_timewait_ack()
918 	struct tcp_timewait_sock *tcptw = tcp_twsk(sk);  in tcp_v6_timewait_ack()
920 	tcp_v6_send_ack(sk, skb, tcptw->tw_snd_nxt, tcptw->tw_rcv_nxt,  in tcp_v6_timewait_ack()
929 static void tcp_v6_reqsk_send_ack(const struct sock *sk, struct sk_buff *skb,  in tcp_v6_reqsk_send_ack()  argument
935 	tcp_v6_send_ack(sk, skb, (sk->sk_state == TCP_LISTEN) ?  in tcp_v6_reqsk_send_ack()
936 			tcp_rsk(req)->snt_isn + 1 : tcp_sk(sk)->snd_nxt,  in tcp_v6_reqsk_send_ack()
938 			tcp_time_stamp, req->ts_recent, sk->sk_bound_dev_if,  in tcp_v6_reqsk_send_ack()
939 			tcp_v6_md5_do_lookup(sk, &ipv6_hdr(skb)->daddr),  in tcp_v6_reqsk_send_ack()
944 static struct sock *tcp_v6_cookie_check(struct sock *sk, struct sk_buff *skb)  in tcp_v6_cookie_check()  argument
950 		sk = cookie_v6_check(sk, skb);  in tcp_v6_cookie_check()
952 	return sk;  in tcp_v6_cookie_check()
955 static int tcp_v6_conn_request(struct sock *sk, struct sk_buff *skb)  in tcp_v6_conn_request()  argument
958 		return tcp_v4_conn_request(sk, skb);  in tcp_v6_conn_request()
964 				&tcp_request_sock_ipv6_ops, sk, skb);  in tcp_v6_conn_request()
967 	NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_LISTENDROPS);  in tcp_v6_conn_request()
971 static struct sock *tcp_v6_syn_recv_sock(const struct sock *sk, struct sk_buff *skb,  in tcp_v6_syn_recv_sock()  argument
979 	const struct ipv6_pinfo *np = inet6_sk(sk);  in tcp_v6_syn_recv_sock()
995 		newsk = tcp_v4_syn_recv_sock(sk, skb, req, dst,  in tcp_v6_syn_recv_sock()
1045 	if (sk_acceptq_is_full(sk))  in tcp_v6_syn_recv_sock()
1049 		dst = inet6_csk_route_req(sk, &fl6, req, IPPROTO_TCP);  in tcp_v6_syn_recv_sock()
1054 	newsk = tcp_create_openreq_child(sk, req, skb);  in tcp_v6_syn_recv_sock()
1121 	if (tcp_sk(sk)->rx_opt.user_mss &&  in tcp_v6_syn_recv_sock()
1122 	    tcp_sk(sk)->rx_opt.user_mss < newtp->advmss)  in tcp_v6_syn_recv_sock()
1123 		newtp->advmss = tcp_sk(sk)->rx_opt.user_mss;  in tcp_v6_syn_recv_sock()
1132 	key = tcp_v6_md5_do_lookup(sk, &newsk->sk_v6_daddr);  in tcp_v6_syn_recv_sock()
1141 			       sk_gfp_atomic(sk, GFP_ATOMIC));  in tcp_v6_syn_recv_sock()
1145 	if (__inet_inherit_port(sk, newsk) < 0) {  in tcp_v6_syn_recv_sock()
1157 						      sk_gfp_atomic(sk, GFP_ATOMIC));  in tcp_v6_syn_recv_sock()
1168 	NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_LISTENOVERFLOWS);  in tcp_v6_syn_recv_sock()
1172 	NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_LISTENDROPS);  in tcp_v6_syn_recv_sock()
1184 static int tcp_v6_do_rcv(struct sock *sk, struct sk_buff *skb)  in tcp_v6_do_rcv()  argument
1186 	struct ipv6_pinfo *np = inet6_sk(sk);  in tcp_v6_do_rcv()
1199 		return tcp_v4_do_rcv(sk, skb);  in tcp_v6_do_rcv()
1201 	if (sk_filter(sk, skb))  in tcp_v6_do_rcv()
1223 		opt_skb = skb_clone(skb, sk_gfp_atomic(sk, GFP_ATOMIC));  in tcp_v6_do_rcv()
1225 	if (sk->sk_state == TCP_ESTABLISHED) { /* Fast path */  in tcp_v6_do_rcv()
1226 		struct dst_entry *dst = sk->sk_rx_dst;  in tcp_v6_do_rcv()
1228 		sock_rps_save_rxhash(sk, skb);  in tcp_v6_do_rcv()
1229 		sk_mark_napi_id(sk, skb);  in tcp_v6_do_rcv()
1231 			if (inet_sk(sk)->rx_dst_ifindex != skb->skb_iif ||  in tcp_v6_do_rcv()
1234 				sk->sk_rx_dst = NULL;  in tcp_v6_do_rcv()
1238 		tcp_rcv_established(sk, skb, tcp_hdr(skb), skb->len);  in tcp_v6_do_rcv()
1247 	if (sk->sk_state == TCP_LISTEN) {  in tcp_v6_do_rcv()
1248 		struct sock *nsk = tcp_v6_cookie_check(sk, skb);  in tcp_v6_do_rcv()
1253 		if (nsk != sk) {  in tcp_v6_do_rcv()
1256 			if (tcp_child_process(sk, nsk, skb))  in tcp_v6_do_rcv()
1263 		sock_rps_save_rxhash(sk, skb);  in tcp_v6_do_rcv()
1265 	if (tcp_rcv_state_process(sk, skb))  in tcp_v6_do_rcv()
1272 	tcp_v6_send_reset(sk, skb);  in tcp_v6_do_rcv()
1279 	TCP_INC_STATS_BH(sock_net(sk), TCP_MIB_CSUMERRORS);  in tcp_v6_do_rcv()
1280 	TCP_INC_STATS_BH(sock_net(sk), TCP_MIB_INERRS);  in tcp_v6_do_rcv()
1292 	tp = tcp_sk(sk);  in tcp_v6_do_rcv()
1294 	    !((1 << sk->sk_state) & (TCPF_CLOSE | TCPF_LISTEN))) {  in tcp_v6_do_rcv()
1303 		if (ipv6_opt_accepted(sk, opt_skb, &TCP_SKB_CB(opt_skb)->header.h6)) {  in tcp_v6_do_rcv()
1304 			skb_set_owner_r(opt_skb, sk);  in tcp_v6_do_rcv()
1351 	struct sock *sk;  in tcp_v6_rcv()  local
1380 	sk = __inet6_lookup_skb(&tcp_hashinfo, skb, th->source, th->dest,  in tcp_v6_rcv()
1382 	if (!sk)  in tcp_v6_rcv()
1386 	if (sk->sk_state == TCP_TIME_WAIT)  in tcp_v6_rcv()
1389 	if (sk->sk_state == TCP_NEW_SYN_RECV) {  in tcp_v6_rcv()
1390 		struct request_sock *req = inet_reqsk(sk);  in tcp_v6_rcv()
1393 		sk = req->rsk_listener;  in tcp_v6_rcv()
1395 		if (tcp_v6_inbound_md5_hash(sk, skb)) {  in tcp_v6_rcv()
1399 		if (unlikely(sk->sk_state != TCP_LISTEN)) {  in tcp_v6_rcv()
1400 			inet_csk_reqsk_queue_drop_and_put(sk, req);  in tcp_v6_rcv()
1403 		sock_hold(sk);  in tcp_v6_rcv()
1404 		nsk = tcp_check_req(sk, skb, req, false);  in tcp_v6_rcv()
1409 		if (nsk == sk) {  in tcp_v6_rcv()
1412 		} else if (tcp_child_process(sk, nsk, skb)) {  in tcp_v6_rcv()
1416 			sock_put(sk);  in tcp_v6_rcv()
1420 	if (hdr->hop_limit < inet6_sk(sk)->min_hopcount) {  in tcp_v6_rcv()
1425 	if (!xfrm6_policy_check(sk, XFRM_POLICY_IN, skb))  in tcp_v6_rcv()
1430 	if (tcp_v6_inbound_md5_hash(sk, skb))  in tcp_v6_rcv()
1433 	if (sk_filter(sk, skb))  in tcp_v6_rcv()
1438 	if (sk->sk_state == TCP_LISTEN) {  in tcp_v6_rcv()
1439 		ret = tcp_v6_do_rcv(sk, skb);  in tcp_v6_rcv()
1443 	sk_incoming_cpu_update(sk);  in tcp_v6_rcv()
1445 	bh_lock_sock_nested(sk);  in tcp_v6_rcv()
1446 	tcp_sk(sk)->segs_in += max_t(u16, 1, skb_shinfo(skb)->gso_segs);  in tcp_v6_rcv()
1448 	if (!sock_owned_by_user(sk)) {  in tcp_v6_rcv()
1449 		if (!tcp_prequeue(sk, skb))  in tcp_v6_rcv()
1450 			ret = tcp_v6_do_rcv(sk, skb);  in tcp_v6_rcv()
1451 	} else if (unlikely(sk_add_backlog(sk, skb,  in tcp_v6_rcv()
1452 					   sk->sk_rcvbuf + sk->sk_sndbuf))) {  in tcp_v6_rcv()
1453 		bh_unlock_sock(sk);  in tcp_v6_rcv()
1457 	bh_unlock_sock(sk);  in tcp_v6_rcv()
1460 	sock_put(sk);  in tcp_v6_rcv()
1483 	sock_put(sk);  in tcp_v6_rcv()
1488 		inet_twsk_put(inet_twsk(sk));  in tcp_v6_rcv()
1495 		inet_twsk_put(inet_twsk(sk));  in tcp_v6_rcv()
1499 	switch (tcp_timewait_state_process(inet_twsk(sk), skb, th)) {  in tcp_v6_rcv()
1509 			struct inet_timewait_sock *tw = inet_twsk(sk);  in tcp_v6_rcv()
1511 			sk = sk2;  in tcp_v6_rcv()
1518 		tcp_v6_timewait_ack(sk, skb);  in tcp_v6_rcv()
1533 	struct sock *sk;  in tcp_v6_early_demux()  local
1548 	sk = __inet6_lookup_established(dev_net(skb->dev), &tcp_hashinfo,  in tcp_v6_early_demux()
1552 	if (sk) {  in tcp_v6_early_demux()
1553 		skb->sk = sk;  in tcp_v6_early_demux()
1555 		if (sk_fullsock(sk)) {  in tcp_v6_early_demux()
1556 			struct dst_entry *dst = READ_ONCE(sk->sk_rx_dst);  in tcp_v6_early_demux()
1559 				dst = dst_check(dst, inet6_sk(sk)->rx_dst_cookie);  in tcp_v6_early_demux()
1561 			    inet_sk(sk)->rx_dst_ifindex == skb->skb_iif)  in tcp_v6_early_demux()
1636 static int tcp_v6_init_sock(struct sock *sk)  in tcp_v6_init_sock()  argument
1638 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_v6_init_sock()
1640 	tcp_init_sock(sk);  in tcp_v6_init_sock()
1645 	tcp_sk(sk)->af_specific = &tcp_sock_ipv6_specific;  in tcp_v6_init_sock()
1651 static void tcp_v6_destroy_sock(struct sock *sk)  in tcp_v6_destroy_sock()  argument
1653 	tcp_v4_destroy_sock(sk);  in tcp_v6_destroy_sock()
1654 	inet6_destroy_sock(sk);  in tcp_v6_destroy_sock()
1790 	struct sock *sk = v;  in tcp6_seq_show()  local
1803 	if (sk->sk_state == TCP_TIME_WAIT)  in tcp6_seq_show()
1805 	else if (sk->sk_state == TCP_NEW_SYN_RECV)  in tcp6_seq_show()
1841 static void tcp_v6_clear_sk(struct sock *sk, int size)  in tcp_v6_clear_sk()  argument
1843 	struct inet_sock *inet = inet_sk(sk);  in tcp_v6_clear_sk()
1846 	sk_prot_clear_nulls(sk, offsetof(struct inet_sock, pinet6));  in tcp_v6_clear_sk()