/*
* This header , excluding the # ifdef _ _ KERNEL__ part , is BSD licensed so
* anyone can use the definitions to implement compatible drivers / servers :
*
*
* Redistribution and use in source and binary forms , with or without
* modification , are permitted provided that the following conditions
* are met :
* 1 . Redistributions of source code must retain the above copyright
* notice , this list of conditions and the following disclaimer .
* 2 . Redistributions in binary form must reproduce the above copyright
* notice , this list of conditions and the following disclaimer in the
* documentation and / or other materials provided with the distribution .
* 3 . Neither the name of IBM nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission .
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ` ` AS IS ' '
* AND ANY EXPRESS OR IMPLIED WARRANTIES , INCLUDING , BUT NOT LIMITED TO , THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED . IN NO EVENT SHALL IBM OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT , INDIRECT , INCIDENTAL , SPECIAL , EXEMPLARY , OR CONSEQUENTIAL
* DAMAGES ( INCLUDING , BUT NOT LIMITED TO , PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES ; LOSS OF USE , DATA , OR PROFITS ; OR BUSINESS INTERRUPTION )
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY , WHETHER IN CONTRACT , STRICT
* LIABILITY , OR TORT ( INCLUDING NEGLIGENCE OR OTHERWISE ) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE , EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE .
*
* Copyright ( C ) Red Hat , Inc . , 2013 - 2015
* Copyright ( C ) Asias He < asias @ redhat . com > , 2013
* Copyright ( C ) Stefan Hajnoczi < stefanha @ redhat . com > , 2015
*/
#ifndef _UAPI_LINUX_VIRTIO_VSOCK_H
#define _UAPI_LINUX_VIRTIO_VSOCK_H
#include <linux/types.h>
#include <linux/virtio_ids.h>
#include <linux/virtio_config.h>
/* The feature bitmap for virtio vsock */
#define VIRTIO_VSOCK_F_SEQPACKET 1 /* SOCK_SEQPACKET supported */
struct virtio_vsock_config {
__le64 guest_cid;
} __attribute__((packed));
enum virtio_vsock_event_id {
VIRTIO_VSOCK_EVENT_TRANSPORT_RESET = 0 ,
};
struct virtio_vsock_event {
__le32 id;
} __attribute__((packed));
struct virtio_vsock_hdr {
__le64 src_cid;
__le64 dst_cid;
__le32 src_port;
__le32 dst_port;
__le32 len;
__le16 type; /* enum virtio_vsock_type */
__le16 op; /* enum virtio_vsock_op */
__le32 flags;
__le32 buf_alloc;
__le32 fwd_cnt;
} __attribute__((packed));
enum virtio_vsock_type {
VIRTIO_VSOCK_TYPE_STREAM = 1 ,
VIRTIO_VSOCK_TYPE_SEQPACKET = 2 ,
};
enum virtio_vsock_op {
VIRTIO_VSOCK_OP_INVALID = 0 ,
/* Connect operations */
VIRTIO_VSOCK_OP_REQUEST = 1 ,
VIRTIO_VSOCK_OP_RESPONSE = 2 ,
VIRTIO_VSOCK_OP_RST = 3 ,
VIRTIO_VSOCK_OP_SHUTDOWN = 4 ,
/* To send payload */
VIRTIO_VSOCK_OP_RW = 5 ,
/* Tell the peer our credit info */
VIRTIO_VSOCK_OP_CREDIT_UPDATE = 6 ,
/* Request the peer to send the credit info to us */
VIRTIO_VSOCK_OP_CREDIT_REQUEST = 7 ,
};
/* VIRTIO_VSOCK_OP_SHUTDOWN flags values */
enum virtio_vsock_shutdown {
VIRTIO_VSOCK_SHUTDOWN_RCV = 1 ,
VIRTIO_VSOCK_SHUTDOWN_SEND = 2 ,
};
/* VIRTIO_VSOCK_OP_RW flags values */
enum virtio_vsock_rw {
VIRTIO_VSOCK_SEQ_EOM = 1 ,
VIRTIO_VSOCK_SEQ_EOR = 2 ,
};
#endif /* _UAPI_LINUX_VIRTIO_VSOCK_H */
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