140 /* Transport used for host->guest communication */
142 /* Transport used for guest->host communication */
144 /* Transport used for DGRAM communication */
146 /* Transport used for local communication */
343 void vsock_for_each_connected_socket(struct vsock_transport *transport,  in vsock_for_each_connected_socket()  argument
354 			if (vsk->transport != transport)  in vsock_for_each_connected_socket()
420 	if (!vsk->transport)  in vsock_deassign_transport()
423 	vsk->transport->destruct(vsk);  in vsock_deassign_transport()
424 	module_put(vsk->transport->module);  in vsock_deassign_transport()
425 	vsk->transport = NULL;  in vsock_deassign_transport()
428 /* Assign a transport to a socket and call the .init transport callback.
433  * The vsk->remote_addr is used to decide which transport to use:
435  *    g2h is not loaded, will use local transport;
437  *    includes VMADDR_FLAG_TO_HOST flag value, will use guest->host transport;
438  *  - remote CID > VMADDR_CID_HOST will use host->guest transport;
480 	if (vsk->transport) {  in vsock_assign_transport()
481 		if (vsk->transport == new_transport)  in vsock_assign_transport()
484 		/* transport->release() must be called with sock lock acquired.  in vsock_assign_transport()
488 		 * any transport.  in vsock_assign_transport()
490 		vsk->transport->release(vsk);  in vsock_assign_transport()
494 	/* We increase the module refcnt to prevent the transport unloading  in vsock_assign_transport()
514 	vsk->transport = new_transport;  in vsock_assign_transport()
573 	if (!vsk->transport)  in vsock_send_shutdown()
576 	return vsk->transport->shutdown(vsk, mode);  in vsock_send_shutdown()
686 	return vsk->transport->dgram_bind(vsk, addr);  in __vsock_bind_dgram()
814 		if (vsk->transport)  in __vsock_release()
815 			vsk->transport->release(vsk);  in __vsock_release()
873 	return vsk->transport->stream_has_data(vsk);  in vsock_stream_has_data()
882 		return vsk->transport->seqpacket_has_data(vsk);  in vsock_connectible_has_data()
890 	return vsk->transport->stream_has_space(vsk);  in vsock_stream_has_space()
1071 		const struct vsock_transport *transport;  in vsock_poll()  local
1075 		transport = vsk->transport;  in vsock_poll()
1085 		if (transport && transport->stream_is_active(vsk) &&  in vsock_poll()
1089 			int ret = transport->notify_poll_in(  in vsock_poll()
1110 		if (transport && sk->sk_state == TCP_ESTABLISHED) {  in vsock_poll()
1113 				int ret = transport->notify_poll_out(  in vsock_poll()
1148 	return vsk->transport->read_skb(vsk, read_actor);  in vsock_read_skb()
1158 	const struct vsock_transport *transport;  in vsock_dgram_sendmsg()  local
1170 	transport = vsk->transport;  in vsock_dgram_sendmsg()
1188 			remote_addr->svm_cid = transport->get_local_cid();  in vsock_dgram_sendmsg()
1198 			remote_addr->svm_cid = transport->get_local_cid();  in vsock_dgram_sendmsg()
1212 	if (!transport->dgram_allow(remote_addr->svm_cid,  in vsock_dgram_sendmsg()
1218 	err = transport->dgram_enqueue(vsk, remote_addr, msg, len);  in vsock_dgram_sendmsg()
1253 	if (!vsk->transport->dgram_allow(remote_addr->svm_cid,  in vsock_dgram_connect()
1283 	return vsk->transport->dgram_dequeue(vsk, msg, len, flags);  in __vsock_dgram_recvmsg()
1315 		if (!vsk->transport || !vsk->transport->unsent_bytes) {  in vsock_do_ioctl()
1325 		n_bytes = vsk->transport->unsent_bytes(vsk);  in vsock_do_ioctl()
1374 	const struct vsock_transport *transport = vsk->transport;  in vsock_transport_cancel_pkt()  local
1376 	if (!transport || !transport->cancel_pkt)  in vsock_transport_cancel_pkt()
1379 	return transport->cancel_pkt(vsk);  in vsock_transport_cancel_pkt()
1410 	const struct vsock_transport *transport;  in vsock_connect()  local
1455 		transport = vsk->transport;  in vsock_connect()
1460 		if (!transport ||  in vsock_connect()
1461 		    !transport->stream_allow(remote_addr->svm_cid,  in vsock_connect()
1467 		if (vsock_msgzerocopy_allow(transport)) {  in vsock_connect()
1471 			 * when transport was unknown, check that this  in vsock_connect()
1484 		err = transport->connect(vsk);  in vsock_connect()
1632 			if (vsock_msgzerocopy_allow(vconnected->transport))  in vsock_accept()
1684 				     const struct vsock_transport *transport,  in vsock_update_buffer_size()  argument
1694 	    transport && transport->notify_buffer_size)  in vsock_update_buffer_size()
1695 		transport->notify_buffer_size(vsk, &val);  in vsock_update_buffer_size()
1709 	const struct vsock_transport *transport;  in vsock_connectible_setsockopt()  local
1733 	transport = vsk->transport;  in vsock_connectible_setsockopt()
1753 		if (transport && !vsock_msgzerocopy_allow(transport)) {  in vsock_connectible_setsockopt()
1765 		vsock_update_buffer_size(vsk, transport, val);  in vsock_connectible_setsockopt()
1771 		vsock_update_buffer_size(vsk, transport, vsk->buffer_size);  in vsock_connectible_setsockopt()
1777 		vsock_update_buffer_size(vsk, transport, vsk->buffer_size);  in vsock_connectible_setsockopt()
1881 	const struct vsock_transport *transport;  in vsock_connectible_sendmsg()  local
1898 	transport = vsk->transport;  in vsock_connectible_sendmsg()
1915 	if (!transport || sk->sk_state != TCP_ESTABLISHED ||  in vsock_connectible_sendmsg()
1927 	    !vsock_msgzerocopy_allow(transport)) {  in vsock_connectible_sendmsg()
1935 	err = transport->notify_send_init(vsk, &send_data);  in vsock_connectible_sendmsg()
1955 			err = transport->notify_send_pre_block(vsk, &send_data);  in vsock_connectible_sendmsg()
1989 		err = transport->notify_send_pre_enqueue(vsk, &send_data);  in vsock_connectible_sendmsg()
2000 			written = transport->seqpacket_enqueue(vsk,  in vsock_connectible_sendmsg()
2003 			written = transport->stream_enqueue(vsk,  in vsock_connectible_sendmsg()
2014 		err = transport->notify_send_post_enqueue(  in vsock_connectible_sendmsg()
2044 	const struct vsock_transport *transport;  in vsock_connectible_wait_data()  local
2051 	transport = vsk->transport;  in vsock_connectible_wait_data()
2072 			err = transport->notify_recv_pre_block(vsk, target, recv_data);  in vsock_connectible_wait_data()
2095 	/* Internal transport error when checking for available  in vsock_connectible_wait_data()
2109 	const struct vsock_transport *transport;  in __vsock_stream_recvmsg()  local
2119 	transport = vsk->transport;  in __vsock_stream_recvmsg()
2128 	if (target >= transport->stream_rcvhiwat(vsk)) {  in __vsock_stream_recvmsg()
2135 	err = transport->notify_recv_init(vsk, target, &recv_data);  in __vsock_stream_recvmsg()
2148 		err = transport->notify_recv_pre_dequeue(vsk, target,  in __vsock_stream_recvmsg()
2153 		read = transport->stream_dequeue(vsk, msg, len - copied, flags);  in __vsock_stream_recvmsg()
2161 		err = transport->notify_recv_post_dequeue(vsk, target, read,  in __vsock_stream_recvmsg()
2187 	const struct vsock_transport *transport;  in __vsock_seqpacket_recvmsg()  local
2195 	transport = vsk->transport;  in __vsock_seqpacket_recvmsg()
2203 	msg_len = transport->seqpacket_dequeue(vsk, msg, flags);  in __vsock_seqpacket_recvmsg()
2240 	const struct vsock_transport *transport;  in __vsock_connectible_recvmsg()  local
2253 	transport = vsk->transport;  in __vsock_connectible_recvmsg()
2255 	if (!transport || sk->sk_state != TCP_ESTABLISHED) {  in __vsock_connectible_recvmsg()
2320 	const struct vsock_transport *transport;  in vsock_set_rcvlowat()  local
2328 	transport = vsk->transport;  in vsock_set_rcvlowat()
2330 	if (transport && transport->notify_set_rcvlowat) {  in vsock_set_rcvlowat()
2333 		err = transport->notify_set_rcvlowat(vsk, val);  in vsock_set_rcvlowat()
2549 	return vsk->transport;  in vsock_core_get_transport()