From: Jorgen Hansen <jhansen@vmware.com>
To: 'Stefano Garzarella' <sgarzare@redhat.com>,
"netdev@vger.kernel.org" <netdev@vger.kernel.org>
Cc: "virtualization@lists.linux-foundation.org"
<virtualization@lists.linux-foundation.org>,
Dexuan Cui <decui@microsoft.com>,
Stefan Hajnoczi <stefanha@redhat.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"kvm@vger.kernel.org" <kvm@vger.kernel.org>,
"David S. Miller" <davem@davemloft.net>
Subject: RE: [PATCH net-next 2/6] vsock: add VMADDR_CID_LOCAL definition
Date: Thu, 21 Nov 2019 14:49:25 +0000 [thread overview]
Message-ID: <MWHPR05MB33764A74EC512852DF16C6C9DA4E0@MWHPR05MB3376.namprd05.prod.outlook.com> (raw)
In-Reply-To: <20191119110121.14480-3-sgarzare@redhat.com>
> From: Stefano Garzarella [mailto:sgarzare@redhat.com]
> 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@vmware.com>
> Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
> ---
> 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@vmware.com>
next prev parent reply other threads:[~2019-11-21 14:49 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-19 11:01 [PATCH net-next 0/6] vsock: add local transport support Stefano Garzarella
2019-11-19 11:01 ` [PATCH net-next 1/6] vsock/virtio_transport_common: remove unused virtio header includes Stefano Garzarella
2019-11-19 11:01 ` [PATCH net-next 2/6] vsock: add VMADDR_CID_LOCAL definition Stefano Garzarella
2019-11-21 14:49 ` Jorgen Hansen [this message]
2019-11-19 11:01 ` [PATCH net-next 3/6] vsock: add local transport support in the vsock core Stefano Garzarella
2019-11-21 15:04 ` Jorgen Hansen
2019-11-21 15:21 ` Stefano Garzarella
2019-11-21 15:53 ` Jorgen Hansen
2019-11-21 16:12 ` Stefano Garzarella
2019-11-21 16:19 ` Jorgen Hansen
2019-11-19 11:01 ` [PATCH net-next 4/6] vsock: add vsock_loopback transport Stefano Garzarella
2019-11-20 1:15 ` David Miller
2019-11-20 9:00 ` Stefano Garzarella
2019-11-21 9:34 ` Stefan Hajnoczi
2019-11-21 9:59 ` Stefano Garzarella
2019-11-21 15:25 ` Stefano Garzarella
2019-11-22 9:25 ` Stefan Hajnoczi
2019-11-22 10:02 ` Stefano Garzarella
2019-11-19 11:01 ` [PATCH net-next 5/6] vsock: use local transport when it is loaded Stefano Garzarella
2019-11-21 9:46 ` Stefan Hajnoczi
2019-11-21 10:01 ` Stefano Garzarella
2019-11-19 11:01 ` [PATCH net-next 6/6] vsock/virtio: remove loopback handling Stefano Garzarella
2019-11-21 9:46 ` [PATCH net-next 0/6] vsock: add local transport support Stefan Hajnoczi
2019-11-21 10:05 ` Stefano Garzarella
2019-11-21 14:45 ` Jorgen Hansen
2019-11-21 15:13 ` Stefano Garzarella
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