sysctl_max_syn_backlog 173 include/net/netns/ipv4.h int sysctl_max_syn_backlog; sysctl_max_syn_backlog 991 net/ipv4/sysctl_net_ipv4.c .data = &init_net.ipv4.sysctl_max_syn_backlog, sysctl_max_syn_backlog 6630 net/ipv4/tcp_input.c (net->ipv4.sysctl_max_syn_backlog - inet_csk_reqsk_queue_len(sk) < sysctl_max_syn_backlog 6631 net/ipv4/tcp_input.c (net->ipv4.sysctl_max_syn_backlog >> 2)) && sysctl_max_syn_backlog 2685 net/ipv4/tcp_ipv4.c net->ipv4.sysctl_max_syn_backlog = max(128, cnt / 128);