141 /* Transport used for host->guest communication */
143 /* Transport used for guest->host communication */
145 /* Transport used for DGRAM communication */
147 /* Transport used for local communication */
339 	/* Transport reassignment must not remove the binding. */  in vsock_remove_sock()
347 void vsock_for_each_connected_socket(struct vsock_transport *transport,  in vsock_for_each_connected_socket()  argument
358 			if (vsk->transport != transport)  in vsock_for_each_connected_socket()
424 	if (!vsk->transport)  in vsock_deassign_transport()
427 	vsk->transport->destruct(vsk);  in vsock_deassign_transport()
428 	module_put(vsk->transport->module);  in vsock_deassign_transport()
429 	vsk->transport = NULL;  in vsock_deassign_transport()
432 /* Assign a transport to a socket and call the .init transport callback.
437  * The vsk->remote_addr is used to decide which transport to use:
439  *    g2h is not loaded, will use local transport;
441  *    includes VMADDR_FLAG_TO_HOST flag value, will use guest->host transport;
442  *  - remote CID > VMADDR_CID_HOST will use host->guest transport;
484 	if (vsk->transport) {  in vsock_assign_transport()
485 		if (vsk->transport == new_transport)  in vsock_assign_transport()
488 		/* transport->release() must be called with sock lock acquired.  in vsock_assign_transport()
492 		 * any transport.  in vsock_assign_transport()
494 		vsk->transport->release(vsk);  in vsock_assign_transport()
497 		/* transport's release() and destruct() can touch some socket  in vsock_assign_transport()
498 		 * state, since we are reassigning the socket to a new transport  in vsock_assign_transport()
507 	/* We increase the module refcnt to prevent the transport unloading  in vsock_assign_transport()
527 	vsk->transport = new_transport;  in vsock_assign_transport()
586 	if (!vsk->transport)  in vsock_send_shutdown()
589 	return vsk->transport->shutdown(vsk, mode);  in vsock_send_shutdown()
699 	return vsk->transport->dgram_bind(vsk, addr);  in __vsock_bind_dgram()
827 	 * can be removed from the bound_table. Unlike transport reassignment  in __vsock_release()
829 	 * being called from the transport release() callback.  in __vsock_release()
833 	if (vsk->transport)  in __vsock_release()
834 		vsk->transport->release(vsk);  in __vsock_release()
888 	if (WARN_ON(!vsk->transport))  in vsock_stream_has_data()
891 	return vsk->transport->stream_has_data(vsk);  in vsock_stream_has_data()
899 	if (WARN_ON(!vsk->transport))  in vsock_connectible_has_data()
903 		return vsk->transport->seqpacket_has_data(vsk);  in vsock_connectible_has_data()
911 	if (WARN_ON(!vsk->transport))  in vsock_stream_has_space()
914 	return vsk->transport->stream_has_space(vsk);  in vsock_stream_has_space()
1111 		const struct vsock_transport *transport;  in vsock_poll()  local
1115 		transport = vsk->transport;  in vsock_poll()
1125 		if (transport && transport->stream_is_active(vsk) &&  in vsock_poll()
1129 			int ret = transport->notify_poll_in(  in vsock_poll()
1150 		if (transport && sk->sk_state == TCP_ESTABLISHED) {  in vsock_poll()
1153 				int ret = transport->notify_poll_out(  in vsock_poll()
1188 	if (WARN_ON_ONCE(!vsk->transport))  in vsock_read_skb()
1191 	return vsk->transport->read_skb(vsk, read_actor);  in vsock_read_skb()
1201 	const struct vsock_transport *transport;  in vsock_dgram_sendmsg()  local
1213 	transport = vsk->transport;  in vsock_dgram_sendmsg()
1231 			remote_addr->svm_cid = transport->get_local_cid();  in vsock_dgram_sendmsg()
1241 			remote_addr->svm_cid = transport->get_local_cid();  in vsock_dgram_sendmsg()
1255 	if (!transport->dgram_allow(remote_addr->svm_cid,  in vsock_dgram_sendmsg()
1261 	err = transport->dgram_enqueue(vsk, remote_addr, msg, len);  in vsock_dgram_sendmsg()
1296 	if (!vsk->transport->dgram_allow(remote_addr->svm_cid,  in vsock_dgram_connect()
1326 	return vsk->transport->dgram_dequeue(vsk, msg, len, flags);  in __vsock_dgram_recvmsg()
1366 	const struct vsock_transport *transport = vsk->transport;  in vsock_transport_cancel_pkt()  local
1368 	if (!transport || !transport->cancel_pkt)  in vsock_transport_cancel_pkt()
1371 	return transport->cancel_pkt(vsk);  in vsock_transport_cancel_pkt()
1402 	const struct vsock_transport *transport;  in vsock_connect()  local
1447 		transport = vsk->transport;  in vsock_connect()
1452 		if (!transport ||  in vsock_connect()
1453 		    !transport->stream_allow(remote_addr->svm_cid,  in vsock_connect()
1465 		err = transport->connect(vsk);  in vsock_connect()
1667 				     const struct vsock_transport *transport,  in vsock_update_buffer_size()  argument
1677 	    transport && transport->notify_buffer_size)  in vsock_update_buffer_size()
1678 		transport->notify_buffer_size(vsk, &val);  in vsock_update_buffer_size()
1692 	const struct vsock_transport *transport;  in vsock_connectible_setsockopt()  local
1716 	transport = vsk->transport;  in vsock_connectible_setsockopt()
1721 		vsock_update_buffer_size(vsk, transport, val);  in vsock_connectible_setsockopt()
1727 		vsock_update_buffer_size(vsk, transport, vsk->buffer_size);  in vsock_connectible_setsockopt()
1733 		vsock_update_buffer_size(vsk, transport, vsk->buffer_size);  in vsock_connectible_setsockopt()
1837 	const struct vsock_transport *transport;  in vsock_connectible_sendmsg()  local
1854 	transport = vsk->transport;  in vsock_connectible_sendmsg()
1871 	if (!transport || sk->sk_state != TCP_ESTABLISHED ||  in vsock_connectible_sendmsg()
1885 	err = transport->notify_send_init(vsk, &send_data);  in vsock_connectible_sendmsg()
1905 			err = transport->notify_send_pre_block(vsk, &send_data);  in vsock_connectible_sendmsg()
1939 		err = transport->notify_send_pre_enqueue(vsk, &send_data);  in vsock_connectible_sendmsg()
1950 			written = transport->seqpacket_enqueue(vsk,  in vsock_connectible_sendmsg()
1953 			written = transport->stream_enqueue(vsk,  in vsock_connectible_sendmsg()
1964 		err = transport->notify_send_post_enqueue(  in vsock_connectible_sendmsg()
1991 	const struct vsock_transport *transport;  in vsock_connectible_wait_data()  local
1998 	transport = vsk->transport;  in vsock_connectible_wait_data()
2019 			err = transport->notify_recv_pre_block(vsk, target, recv_data);  in vsock_connectible_wait_data()
2042 	/* Internal transport error when checking for available  in vsock_connectible_wait_data()
2056 	const struct vsock_transport *transport;  in __vsock_stream_recvmsg()  local
2066 	transport = vsk->transport;  in __vsock_stream_recvmsg()
2075 	if (target >= transport->stream_rcvhiwat(vsk)) {  in __vsock_stream_recvmsg()
2082 	err = transport->notify_recv_init(vsk, target, &recv_data);  in __vsock_stream_recvmsg()
2095 		err = transport->notify_recv_pre_dequeue(vsk, target,  in __vsock_stream_recvmsg()
2100 		read = transport->stream_dequeue(vsk, msg, len - copied, flags);  in __vsock_stream_recvmsg()
2108 		err = transport->notify_recv_post_dequeue(vsk, target, read,  in __vsock_stream_recvmsg()
2134 	const struct vsock_transport *transport;  in __vsock_seqpacket_recvmsg()  local
2142 	transport = vsk->transport;  in __vsock_seqpacket_recvmsg()
2150 	msg_len = transport->seqpacket_dequeue(vsk, msg, flags);  in __vsock_seqpacket_recvmsg()
2187 	const struct vsock_transport *transport;  in __vsock_connectible_recvmsg()  local
2200 	transport = vsk->transport;  in __vsock_connectible_recvmsg()
2202 	if (!transport || sk->sk_state != TCP_ESTABLISHED) {  in __vsock_connectible_recvmsg()
2267 	const struct vsock_transport *transport;  in vsock_set_rcvlowat()  local
2275 	transport = vsk->transport;  in vsock_set_rcvlowat()
2277 	if (transport && transport->notify_set_rcvlowat) {  in vsock_set_rcvlowat()
2280 		err = transport->notify_set_rcvlowat(vsk, val);  in vsock_set_rcvlowat()
2490 	return vsk->transport;  in vsock_core_get_transport()