tcp_rtx_synack 1955 include/net/tcp.h int tcp_rtx_synack(const struct sock *sk, struct request_sock *req); tcp_rtx_synack 1370 net/ipv4/tcp_ipv4.c .rtx_syn_ack = tcp_rtx_synack, tcp_rtx_synack 3864 net/ipv4/tcp_output.c EXPORT_SYMBOL(tcp_rtx_synack); tcp_rtx_synack 781 net/ipv6/tcp_ipv6.c .rtx_syn_ack = tcp_rtx_synack,