Commit ef343b35 authored by Stefano Garzarella's avatar Stefano Garzarella Committed by David S. Miller
Browse files

vsock: add VMADDR_CID_LOCAL definition 



The VMADDR_CID_RESERVED (1) was used by VMCI, but now it is not
used anymore, so we can reuse it for local communication
(loopback) adding the new well-know CID: VMADDR_CID_LOCAL.

Cc: Jorgen Hansen <jhansen@vmware.com>
Reviewed-by: default avatarStefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: default avatarJorgen Hansen <jhansen@vmware.com>
Signed-off-by: default avatarStefano Garzarella <sgarzare@redhat.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent c5144fcb

include/uapi/linux/vm_sockets.h

+5 −3
Original line number Diff line number Diff line
@@ -99,11 +99,13 @@ 


#define VMADDR_CID_HYPERVISOR 0



/* This CID is specific to VMCI and can be considered reserved (even VMCI

 * doesn't use it anymore, it's a legacy value from an older release).

/* Use this as the destination CID in an address when referring to the

 * local communication (loopback).

 * (This was VMADDR_CID_RESERVED, but even VMCI doesn't use it anymore,

 * it was a legacy value from an older release).

 */



#define VMADDR_CID_RESERVED 1

#define VMADDR_CID_LOCAL 1



/* Use this as the destination CID in an address when referring to the host

 * (any process other than the hypervisor).  VMCI relies on it being 2, but

net/vmw_vsock/vmci_transport.c

+1 −1
Original line number Diff line number Diff line
@@ -648,7 +648,7 @@ static int vmci_transport_recv_dgram_cb(void *data, struct vmci_datagram *dg) 
static bool vmci_transport_stream_allow(u32 cid, u32 port)

{

	static const u32 non_socket_contexts[] = {

		VMADDR_CID_RESERVED,

		VMADDR_CID_LOCAL,

	};

	int i;

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