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/*
* Copyright 2009 Novell. All Rights Reserved.
*
* Virtual-Ethernet adapter
*
* Author:
* Gregory Haskins <ghaskins@novell.com>
*
* This file is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef _LINUX_VENET_H
#define _LINUX_VENET_H
#include <linux/types.h>
#define VENET_VERSION 1
#define VENET_TYPE "virtual-ethernet"
#define VENET_QUEUE_RX 0
#define VENET_QUEUE_TX 1
struct venet_capabilities {
__u32 gid;
__u32 bits;
};
#define VENET_CAP_GROUP_SG 0
#define VENET_CAP_GROUP_EVENTQ 1
#define VENET_CAP_GROUP_L4RO 2 /* layer-4 reassem offloading */
/* CAPABILITIES-GROUP SG */
#define VENET_CAP_SG (1 << 0)
#define VENET_CAP_TSO4 (1 << 1)
#define VENET_CAP_TSO6 (1 << 2)
#define VENET_CAP_ECN (1 << 3)
#define VENET_CAP_UFO (1 << 4)
#define VENET_CAP_PMTD (1 << 5) /* pre-mapped tx desc */
/* CAPABILITIES-GROUP EVENTQ */
#define VENET_CAP_EVQ_LINKSTATE (1 << 0)
#define VENET_CAP_EVQ_TXC (1 << 1) /* tx-complete */
struct venet_iov {
__u32 len;
__u64 ptr;
};
#define VENET_SG_FLAG_NEEDS_CSUM (1 << 0)
#define VENET_SG_FLAG_GSO (1 << 1)
#define VENET_SG_FLAG_ECN (1 << 2)
struct venet_sg {
__u64 cookie;
__u32 flags;
__u32 len; /* total length of all iovs */
struct {
__u16 start; /* csum starting position */
__u16 offset; /* offset to place csum */
} csum;
struct {
#define VENET_GSO_TYPE_TCPV4 0 /* IPv4 TCP (TSO) */
#define VENET_GSO_TYPE_UDP 1 /* IPv4 UDP (UFO) */
#define VENET_GSO_TYPE_TCPV6 2 /* IPv6 TCP */
__u8 type;
__u16 hdrlen;
__u16 size;
} gso;
__u32 count; /* nr of iovs */
struct venet_iov iov[1];
};
struct venet_eventq_query {
__u32 flags;
__u32 evsize; /* size of each event */
__u32 dpid; /* descriptor pool-id */
__u32 qid;
__u8 pad[16];
};
#define VENET_EVENT_LINKSTATE 0
#define VENET_EVENT_TXC 1
struct venet_event_header {
__u32 flags;
__u32 size;
__u32 id;
};
struct venet_event_linkstate {
struct venet_event_header header;
__u8 state; /* 0 = down, 1 = up */
};
struct venet_event_txc {
struct venet_event_header header;
__u32 txqid;
__u64 cookie;
};
struct venet_l4ro_query {
__u32 flags;
__u32 dpid; /* descriptor pool-id */
__u32 pqid; /* page queue-id */
__u8 pad[20];
};
#define VSG_DESC_SIZE(count) (sizeof(struct venet_sg) + \
sizeof(struct venet_iov) * ((count) - 1))
#define VENET_FUNC_LINKUP 0
#define VENET_FUNC_LINKDOWN 1
#define VENET_FUNC_MACQUERY 2
#define VENET_FUNC_NEGCAP 3 /* negotiate capabilities */
#define VENET_FUNC_FLUSHRX 4
#define VENET_FUNC_PMTDQUERY 5
#define VENET_FUNC_EVQQUERY 6
#define VENET_FUNC_L4ROQUERY 7
#endif /* _LINUX_VENET_H */
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