tcp_sendmsg_locked
rv = tcp_sendmsg_locked(sk, &msg, bytes);
int tcp_sendmsg_locked(struct sock *sk, struct msghdr *msg, size_t size);
TRACE_EVENT(tcp_sendmsg_locked,
.sendmsg_locked = tcp_sendmsg_locked,
EXPORT_SYMBOL_GPL(tcp_sendmsg_locked);
ret = tcp_sendmsg_locked(sk, msg, size);
ret = tcp_sendmsg_locked(sk, &msghdr, size);
.sendmsg_locked = tcp_sendmsg_locked,
ret = tcp_sendmsg_locked(sk, &msg, size);
ret = tcp_sendmsg_locked(sk, &msghdr, sg->length);