Function soabort

freebsd/kern/uipc_socket.c:1269–1288

* soabort() is used to abruptly tear down a connection, such as when a * resource limit is reached (listen queue depth exceeded), or if a listen * socket is closed while there are sockets waiting to be accepted. * * This interface is tricky, because it is called on an unreferenced socket, * and must be called only by a thread that has actually removed the socket * from the listen queue it wa

 * to review in the future.
 */
void
soabort(struct socket *so)
{

	/*
	 * In as much as is possible, assert that no references to this
	 * socket are held.  This is not quite the same as asserting that the
	 * current thread is responsible for arranging for no references, but
	 * is as close as we can get for now.
	 */
	KASSERT(so->so_count == 0, ("soabort: so_count"));
	KASSERT((so->so_state & SS_PROTOREF) == 0, ("soabort: SS_PROTOREF"));
	KASSERT(so->so_state & SS_NOFDREF, ("soabort: !SS_NOFDREF"));
	VNET_SO_ASSERT(so);

	if (so->so_proto->pr_usrreqs->pru_abort != NULL)
		(*so->so_proto->pr_usrreqs->pru_abort)(so);
	SOCK_LOCK(so);
	sofree(so);
}

int
soaccept(struct socket *so, struct sockaddr **nam)