tcp_sendmsg 285 include/net/tcp.h extern int tcp_sendmsg(struct kiocb *iocb, struct socket *sock, tcp_sendmsg 856 net/ipv4/af_inet.c .sendmsg = tcp_sendmsg, tcp_sendmsg 483 net/ipv6/af_inet6.c .sendmsg = tcp_sendmsg, /* ok */