> From: Stefano Garzarella [mailto:sgarzare@xxxxxxxxxx] > Sent: Tuesday, November 19, 2019 12:01 PM > > 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@xxxxxxxxxx> > Signed-off-by: Stefano Garzarella <sgarzare@xxxxxxxxxx> > --- > include/uapi/linux/vm_sockets.h | 8 +++++--- > net/vmw_vsock/vmci_transport.c | 2 +- > 2 files changed, 6 insertions(+), 4 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 > diff --git a/net/vmw_vsock/vmci_transport.c > b/net/vmw_vsock/vmci_transport.c > index 644d32e43d23..4b8b1150a738 100644 > --- a/net/vmw_vsock/vmci_transport.c > +++ b/net/vmw_vsock/vmci_transport.c > @@ -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; > > -- > 2.21.0 Reviewed-by: Jorgen Hansen <jhansen@xxxxxxxxxx> _______________________________________________ Virtualization mailing list Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linuxfoundation.org/mailman/listinfo/virtualization
