net/ipv4/tcp_input.c

445 			   min(sndmem, READ_ONCE(sock_net(sk)->ipv4.sysctl_tcp_wmem[2])));
480 	int window = tcp_win_from_space(sk, READ_ONCE(sock_net(sk)->ipv4.sysctl_tcp_rmem[2])) >> 1;
553 	int tcp_app_win = READ_ONCE(sock_net(sk)->ipv4.sysctl_tcp_app_win);
597 	rmem2 = READ_ONCE(net->ipv4.sysctl_tcp_rmem[2]);
757 	if (READ_ONCE(sock_net(sk)->ipv4.sysctl_tcp_moderate_rcvbuf) &&
773 			       READ_ONCE(sock_net(sk)->ipv4.sysctl_tcp_rmem[2]));
949 		rate *= READ_ONCE(sock_net(sk)->ipv4.sysctl_tcp_pacing_ss_ratio);
951 		rate *= READ_ONCE(sock_net(sk)->ipv4.sysctl_tcp_pacing_ca_ratio);
1090 				       READ_ONCE(sock_net(sk)->ipv4.sysctl_tcp_max_reordering));
2069 			       READ_ONCE(sock_net(sk)->ipv4.sysctl_tcp_max_reordering));
2138 	return READ_ONCE(sock_net(sk)->ipv4.sysctl_tcp_recovery) &
2204 	reordering = READ_ONCE(net->ipv4.sysctl_tcp_reordering);
2218 	tp->frto = READ_ONCE(net->ipv4.sysctl_tcp_frto) &&
3124 	u32 wlen = READ_ONCE(sock_net(sk)->ipv4.sysctl_tcp_min_rtt_wlen) * HZ;
3528 	    READ_ONCE(sock_net(sk)->ipv4.sysctl_tcp_reordering))
3676 		    elapsed < READ_ONCE(net->ipv4.sysctl_tcp_invalid_ratelimit)) {
3721 	ack_limit = READ_ONCE(net->ipv4.sysctl_tcp_challenge_ack_limit);
3727 	if (now != READ_ONCE(net->ipv4.tcp_challenge_timestamp)) {
3730 		WRITE_ONCE(net->ipv4.tcp_challenge_timestamp, now);
3731 		WRITE_ONCE(net->ipv4.tcp_challenge_count,
3734 	count = READ_ONCE(net->ipv4.tcp_challenge_count);
3736 		WRITE_ONCE(net->ipv4.tcp_challenge_count, count - 1);
4166 				    !estab && READ_ONCE(net->ipv4.sysctl_tcp_window_scaling)) {
4182 				     (!estab && READ_ONCE(net->ipv4.sysctl_tcp_timestamps)))) {
4190 				    !estab && READ_ONCE(net->ipv4.sysctl_tcp_sack)) {
4572 	if (tcp_is_sack(tp) && READ_ONCE(sock_net(sk)->ipv4.sysctl_tcp_dsack)) {
4630 		if (tcp_is_sack(tp) && READ_ONCE(sock_net(sk)->ipv4.sysctl_tcp_dsack)) {
5689 		    READ_ONCE(sock_net(sk)->ipv4.sysctl_tcp_backlog_ack_defer)) {
5704 	    tp->compressed_ack >= READ_ONCE(sock_net(sk)->ipv4.sysctl_tcp_comp_sack_nr))
5726 		      READ_ONCE(sock_net(sk)->ipv4.sysctl_tcp_comp_sack_delay_ns),
5730 			       READ_ONCE(sock_net(sk)->ipv4.sysctl_tcp_comp_sack_slack_ns),
5758 	if (ptr && !READ_ONCE(sock_net(sk)->ipv4.sysctl_tcp_stdurg))
6948 	ecn_ok = READ_ONCE(net->ipv4.sysctl_tcp_ecn) || ecn_ok_dst;
7020 	syncookies = READ_ONCE(net->ipv4.sysctl_tcp_syncookies);
7088 	if (READ_ONCE(sock_net(sk)->ipv4.sysctl_tcp_syncookies) != 2 &&
7136 		syncookies = READ_ONCE(net->ipv4.sysctl_tcp_syncookies);
7191 		int max_syn_backlog = READ_ONCE(net->ipv4.sysctl_max_syn_backlog);