xnf.h revision 843e19887f64dde75055cf8842fc4db2171eff45
/*
* 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 2007 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _SYS_XNF_H
#define _SYS_XNF_H
#pragma ident "%Z%%M% %I% %E% SMI"
#include <sys/types.h>
#include <sys/kstat.h>
#include <sys/hypervisor.h>
#include <xen/public/io/netif.h>
#include <xen/sys/xenbus_impl.h>
#ifdef __cplusplus
extern "C" {
#endif
#define NET_TX_RING_SIZE __RING_SIZE((netif_tx_sring_t *)0, PAGESIZE)
#define NET_RX_RING_SIZE __RING_SIZE((netif_rx_sring_t *)0, PAGESIZE)
#define XNF_MAXPKT 1500 /* MTU size */
#define XNF_FRAMESIZE 1514 /* frame size including MAC header */
#define XNF_MAX_RXDESCS 256
/* Watermark for causing "interrupt on completion" for outgoing packets */
#define XNF_TX_FREE_THRESH (NET_TX_RING_SIZE / 10)
#define MCAST_HASHBITS 256
extern int xnf_diagnose; /* Available for use any time. */
/* Flags to set in the global xnf_diagnose */
#define XNF_DIAG_RX 0x01
#define XNF_DIAG_TX 0x02
#define XNF_DIAG_STATS 0x04
#define XNF_DIAG_RX_BUFS 0x08
/* DEBUG flags */
#define XNF_DEBUG_DDI 0x01
#define XNF_DEBUG_TRACE 0x02
#define XNF_DEBUG_SEND 0x04
#define XNF_DEBUG_INT 0x08
#define XNF_DESC_ALIGN 8
/* Info pertaining to each xmit/receive buffer */
struct xnf_buffer_desc {
frtn_t free_rtn; /* desballoc() structure */
struct xnf *xnfp;
ddi_dma_handle_t dma_handle;
caddr_t buf; /* DMA-able data buffer */
paddr_t buf_phys;
struct xnf_buffer_desc *next; /* For linking into free list */
ddi_acc_handle_t acc_handle;
grant_ref_t grant_ref; /* grant table reference */
uint16_t id; /* buffer id */
};
/* Various information about each transmit packet */
struct tx_pktinfo {
mblk_t *mp; /* mblk associated with packet */
ddi_dma_handle_t dma_handle;
struct xnf_buffer_desc *bdesc; /* pointer to buffer descriptor */
grant_ref_t grant_ref; /* grant table reference */
uint16_t id; /* tx pkt id/free list next pointer */
};
/* Per network-interface-controller driver private structure */
typedef struct xnf {
/* most interesting stuff first to assist debugging */
dev_info_t *devinfo; /* System per-device info. */
mac_handle_t mh; /* Nemo per-device info. */
int rx_bufs_outstanding;
int tx_descs_free;
int rx_descs_free; /* count of free rx bufs */
int n_xmits; /* No. xmit descriptors */
int n_recvs; /* No. recv descriptors */
int n_recv_bufs; /* No. recv DMA buffers */
int tx_start_thresh_regval;
unsigned char mac_addr[ETHERADDRL];
int max_recv_bufs;
int recv_buffer_count;
int xmit_buffer_count;
boolean_t connected;
boolean_t running;
boolean_t cksum_offload;
uint64_t stat_intr;
uint64_t stat_norcvbuf;
uint64_t stat_errrcv;
uint64_t stat_xmit_attempt;
uint64_t stat_xmit_pullup;
uint64_t stat_xmit_pagebndry;
uint64_t stat_xmit_defer;
uint64_t stat_rx_no_ringbuf;
uint64_t stat_mac_rcv_error;
uint64_t stat_runt;
uint64_t stat_ipackets;
uint64_t stat_opackets;
uint64_t stat_rbytes;
uint64_t stat_obytes;
uint64_t stat_tx_cksum_deferred;
uint64_t stat_rx_cksum_no_need;
kstat_t *kstat_aux;
struct xnf_buffer_desc *free_list;
struct xnf_buffer_desc *xmit_free_list;
int tx_pkt_id_list; /* free list of avail pkt ids */
struct tx_pktinfo tx_pkt_info[NET_TX_RING_SIZE];
struct xnf_buffer_desc *rxpkt_bufptr[XNF_MAX_RXDESCS];
mac_resource_handle_t rx_handle;
ddi_iblock_cookie_t icookie;
kmutex_t tx_buf_mutex;
kmutex_t rx_buf_mutex;
kmutex_t txlock;
kmutex_t intrlock;
boolean_t tx_pages_readonly;
netif_tx_front_ring_t tx_ring; /* tx interface struct ptr */
ddi_dma_handle_t tx_ring_dma_handle;
ddi_acc_handle_t tx_ring_dma_acchandle;
paddr_t tx_ring_phys_addr;
grant_ref_t tx_ring_ref;
netif_rx_front_ring_t rx_ring; /* rx interface struct ptr */
ddi_dma_handle_t rx_ring_dma_handle;
ddi_acc_handle_t rx_ring_dma_acchandle;
paddr_t rx_ring_phys_addr;
grant_ref_t rx_ring_ref;
uint16_t evtchn; /* channel to back end ctlr */
grant_ref_t gref_tx_head; /* tx grant free list */
grant_ref_t gref_rx_head; /* rx grant free list */
kcondvar_t cv;
} xnf_t;
#ifdef __cplusplus
}
#endif
#endif /* _SYS_XNF_H */