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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright (c) 2006, 2010, Oracle and/or its affiliates. All rights reserved.
*/
#ifndef _VNET_COMMON_H
#define _VNET_COMMON_H
#ifdef __cplusplus
extern "C" {
#endif
#include <sys/vio_common.h>
#include <sys/vio_mailbox.h>
#include <sys/ethernet.h>
/*
* This header file contains definitions common to LDoms Virtual Network
* server (vsw) and client (vnet).
*/
/* max # of cookies per frame size in TxDring mode */
#define MAX_COOKIES ((ETHERMAX >> MMU_PAGESHIFT) + 2ULL)
/*
* Max # of data area cookies that we support in RxDringData mode. This is
* pre-defined to avoid allocating and importing a large # of cookies for the
* data area. We know that the export map table on the exporting end point is
* per LDC. We also know that a single cookie can be obtained if we manage
* to get consecutive entries in the export map table. We use this knowledge to
* limit the # of cookies to a pre-defined maximum value.
*/
#define VNET_DATA_AREA_COOKIES 32
/*
* Size of dring reg msg in RxDringData mode, given # of data area cookies.
* This assumes that the # of dring cookies in vio_dring_reg_msg_t is 1.
* The given # of data area cookies is reduced by 1, as vio_dring_reg_msg_ext_t
* itself contains 1 data cookie.
*/
#define VNET_DRING_REG_EXT_MSG_SIZE(data_ncookies) \
(sizeof (vio_dring_reg_msg_t) + sizeof (vio_dring_reg_ext_msg_t) + \
(((data_ncookies) - 1) * sizeof (ldc_mem_cookie_t)))
/* Max supported size of dring reg msg in RxDringData mode */
#define VNET_DRING_REG_EXT_MSG_SIZE_MAX \
VNET_DRING_REG_EXT_MSG_SIZE(VNET_DATA_AREA_COOKIES)
/* initial send sequence number */
#define VNET_ISS 0x1
#define VNET_START_IDX_UNSPEC 0xFFFFFFFF /* ignore st_idx in dringdata ack */
#define VNET_2K (1 << 11)
#define VNET_4K (1 << 12)
#define VNET_8K (1 << 13)
#define VNET_12K ((VNET_8K) + (VNET_4K))
#define VNET_IPALIGN 6 /* padding for IP header alignment */
#define VNET_LDCALIGN 8 /* padding for ldc_mem_copy() align */
#define VNET_ROUNDUP_2K(n) (((n) + (VNET_2K - 1)) & ~(VNET_2K - 1))
#define VNET_ROUNDUP_4K(n) (((n) + (VNET_4K - 1)) & ~(VNET_4K - 1))
#define VNET_ROUNDUP_8K(n) (((n) + (VNET_8K - 1)) & ~(VNET_8K - 1))
#define MEMBAR_CONSUMER membar_consumer
#define MEMBAR_PRODUCER membar_producer
/*
* Maximum MTU value currently supported. MAX_COOKIES for data has been defined
* already based on ETHERMAX. Hence we limit the MTU to be within 2 8K pages
* and take some additional steps (see related code in .c files) to ensure that
* ldc cookies for each data buffer is within the MAX_COOKIES. This allows us
* to support Jumbo MTUs without changing the size of the descriptor.
*/
#define VNET_MAX_MTU 16000
#define VNET_NUM_HANDSHAKES 6 /* # of handshake attempts */
/*
* Max frame size to data block size in RxDringData mode
*/
#define RXDRING_DBLK_SZ(mfs) \
(VNET_ROUNDUP_2K((mfs) + VNET_IPALIGN + VNET_LDCALIGN))
/* vnet descriptor */
typedef struct vnet_public_desc {
vio_dring_entry_hdr_t hdr; /* descriptor header */
uint32_t nbytes; /* data length */
uint32_t ncookies; /* number of data cookies */
ldc_mem_cookie_t memcookie[MAX_COOKIES]; /* data cookies */
} vnet_public_desc_t;
/*
* Vnet in-band descriptor. Used by those vnet clients
* such as OBP who do not use descriptor rings.
*/
typedef struct vnet_ibnd_desc {
vio_inband_desc_msg_hdr_t hdr;
/* payload */
uint32_t nbytes;
uint32_t ncookies;
ldc_mem_cookie_t memcookie[MAX_COOKIES];
} vnet_ibnd_desc_t;
/*
* Descriptor format in RxDringData mode.
*/
typedef struct vnet_rxdring_data_desc {
uint8_t dstate; /* Descriptor state */
uint8_t resv1[3]; /* Reserved */
uint32_t nbytes; /* Num bytes in data buffer */
uint64_t data_buf_offset; /* Offset of data buffer */
} vnet_rx_dringdata_desc_t;
/* exported functions */
uint64_t vnet_macaddr_strtoul(const uint8_t *macaddr);
void vnet_macaddr_ultostr(uint64_t value, uint8_t *macaddr);
mblk_t *vnet_vlan_insert_tag(mblk_t *mp, uint16_t vid);
mblk_t *vnet_vlan_remove_tag(mblk_t *mp);
int vnet_dring_entry_copy(vnet_public_desc_t *dst, vnet_public_desc_t *src,
uint8_t mtype, ldc_dring_handle_t handle, uint64_t start, uint64_t stop);
int vnet_dring_entry_set_dstate(vnet_public_desc_t *descp, uint8_t mtype,
ldc_dring_handle_t handle, uint64_t start, uint64_t stop, uint8_t dstate);
#ifdef __cplusplus
}
#endif
#endif /* _VNET_COMMON_H */
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