path: root/drivers/net/hyperv/hyperv_net.h

/*
 *
 * Copyright (c) 2011, Microsoft Corporation.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms and conditions of the GNU General Public License,
 * version 2, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope 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, see <http://www.gnu.org/licenses/>.
 *
 * Authors:
 *   Haiyang Zhang <haiyangz@microsoft.com>
 *   Hank Janssen  <hjanssen@microsoft.com>
 *   K. Y. Srinivasan <kys@microsoft.com>
 *
 */

#ifndef _HYPERV_NET_H
#define _HYPERV_NET_H

#include <linux/list.h>
#include <linux/hyperv.h>
#include <linux/rndis.h>

/* RSS related */
#define OID_GEN_RECEIVE_SCALE_CAPABILITIES 0x00010203  /* query only */
#define OID_GEN_RECEIVE_SCALE_PARAMETERS 0x00010204  /* query and set */

#define NDIS_OBJECT_TYPE_RSS_CAPABILITIES 0x88
#define NDIS_OBJECT_TYPE_RSS_PARAMETERS 0x89
#define NDIS_OBJECT_TYPE_OFFLOAD	0xa7

#define NDIS_RECEIVE_SCALE_CAPABILITIES_REVISION_2 2
#define NDIS_RECEIVE_SCALE_PARAMETERS_REVISION_2 2

struct ndis_obj_header {
	u8 type;
	u8 rev;
	u16 size;
} __packed;

/* ndis_recv_scale_cap/cap_flag */
#define NDIS_RSS_CAPS_MESSAGE_SIGNALED_INTERRUPTS 0x01000000
#define NDIS_RSS_CAPS_CLASSIFICATION_AT_ISR       0x02000000
#define NDIS_RSS_CAPS_CLASSIFICATION_AT_DPC       0x04000000
#define NDIS_RSS_CAPS_USING_MSI_X                 0x08000000
#define NDIS_RSS_CAPS_RSS_AVAILABLE_ON_PORTS      0x10000000
#define NDIS_RSS_CAPS_SUPPORTS_MSI_X              0x20000000
#define NDIS_RSS_CAPS_HASH_TYPE_TCP_IPV4          0x00000100
#define NDIS_RSS_CAPS_HASH_TYPE_TCP_IPV6          0x00000200
#define NDIS_RSS_CAPS_HASH_TYPE_TCP_IPV6_EX       0x00000400

struct ndis_recv_scale_cap { /* NDIS_RECEIVE_SCALE_CAPABILITIES */
	struct ndis_obj_header hdr;
	u32 cap_flag;
	u32 num_int_msg;
	u32 num_recv_que;
	u16 num_indirect_tabent;
} __packed;


/* ndis_recv_scale_param flags */
#define NDIS_RSS_PARAM_FLAG_BASE_CPU_UNCHANGED     0x0001
#define NDIS_RSS_PARAM_FLAG_HASH_INFO_UNCHANGED    0x0002
#define NDIS_RSS_PARAM_FLAG_ITABLE_UNCHANGED       0x0004
#define NDIS_RSS_PARAM_FLAG_HASH_KEY_UNCHANGED     0x0008
#define NDIS_RSS_PARAM_FLAG_DISABLE_RSS            0x0010

/* Hash info bits */
#define NDIS_HASH_FUNC_TOEPLITZ 0x00000001
#define NDIS_HASH_IPV4          0x00000100
#define NDIS_HASH_TCP_IPV4      0x00000200
#define NDIS_HASH_IPV6          0x00000400
#define NDIS_HASH_IPV6_EX       0x00000800
#define NDIS_HASH_TCP_IPV6      0x00001000
#define NDIS_HASH_TCP_IPV6_EX   0x00002000

#define NDIS_RSS_INDIRECTION_TABLE_MAX_SIZE_