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authorStefano Garzarella <sgarzare@redhat.com>2019-12-10 11:43:03 +0100
committerDavid S. Miller <davem@davemloft.net>2019-12-11 15:01:23 -0800
commitef343b35d46667668a099655fca4a5b2e43a5dfe (patch)
tree415a5973ef15aaa340021bce5c163b31dc422647 /include/uapi/linux/vm_sockets.h
parentc5144fcbf25015b850e97a06a24b1ddfbc5579e8 (diff)
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: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Jorgen Hansen <jhansen@vmware.com> Signed-off-by: Stefano Garzarella <sgarzare@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/uapi/linux/vm_sockets.h')
-rw-r--r--include/uapi/linux/vm_sockets.h8
1 files changed, 5 insertions, 3 deletions
diff --git a/include/uapi/linux/vm_sockets.h b/include/uapi/linux/vm_sockets.h
index 68d57c5e99bc..fd0ed7221645 100644
--- a/include/uapi/linux/vm_sockets.h
+++ b/include/uapi/linux/vm_sockets.h
@@ -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