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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 2010 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*
* xnb.h - definitions for Xen dom0 network driver
*/
#ifndef _SYS_XNB_H
#define _SYS_XNB_H
#include <sys/types.h>
#include <sys/kstat.h>
#include <sys/stream.h>
#include <sys/ethernet.h>
#include <sys/hypervisor.h>
#include <xen/public/io/netif.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 XNBMAXPKT 1500 /* MTU size */
/* DEBUG flags */
#define XNBDDI 0x01
#define XNBTRACE 0x02
#define XNBSEND 0x04
#define XNBRECV 0x08
#define XNBINTR 0x10
#define XNBRING 0x20
#define XNBCKSUM 0x40
#define XNB_STATE_INIT 0x01
#define XNB_STATE_READY 0x02
typedef struct xnb xnb_t;
/*
* The xnb module provides core inter-domain network protocol functionality.
* It is connected to the rest of Solaris in two ways:
* - as a GLDv3 driver (with xnbu),
* - as a GLDv3 consumer (with xnbo).
*
* The different modes of operation are termed "flavours" and each
* instance of an xnb based driver operates in one and only one mode.
* The common xnb driver exports a set of functions to these drivers
* (declarations at the foot of this file) and calls back into the
* drivers via the xnb_flavour_t structure.
*/
typedef struct xnb_flavour {
void (*xf_from_peer)(xnb_t *, mblk_t *);
boolean_t (*xf_peer_connected)(xnb_t *);
void (*xf_peer_disconnected)(xnb_t *);
boolean_t (*xf_hotplug_connected)(xnb_t *);
boolean_t (*xf_start_connect)(xnb_t *);
mblk_t *(*xf_cksum_from_peer)(xnb_t *, mblk_t *, uint16_t);
uint16_t (*xf_cksum_to_peer)(xnb_t *, mblk_t *);
boolean_t (*xf_mcast_add)(xnb_t *, ether_addr_t *);
boolean_t (*xf_mcast_del)(xnb_t *, ether_addr_t *);
} xnb_flavour_t;
typedef struct xnb_txbuf {
frtn_t xt_free_rtn;
xnb_t *xt_xnbp;
struct xnb_txbuf *xt_next;
RING_IDX xt_id;
RING_IDX xt_idx;
uint16_t xt_status;
ddi_dma_handle_t xt_dma_handle;
ddi_acc_handle_t xt_acc_handle;
caddr_t xt_buf;
size_t xt_buflen;
mfn_t xt_mfn;
mblk_t *xt_mblk;
unsigned int xt_flags;
#define XNB_TXBUF_INUSE 0x01
} xnb_txbuf_t;
/* Per network-interface-controller driver private structure */
struct xnb {
/* most interesting stuff first to assist debugging */
dev_info_t *xnb_devinfo; /* System per-device info. */
xnb_flavour_t *xnb_flavour;
void *xnb_flavour_data;
boolean_t xnb_irq;
unsigned char xnb_mac_addr[ETHERADDRL];
uint64_t xnb_stat_ipackets;
uint64_t xnb_stat_opackets;
uint64_t xnb_stat_rbytes;
uint64_t xnb_stat_obytes;
uint64_t xnb_stat_intr;
uint64_t xnb_stat_rx_defer;
uint64_t xnb_stat_rx_cksum_deferred;
uint64_t xnb_stat_tx_cksum_no_need;
uint64_t xnb_stat_rx_rsp_notok;
uint64_t xnb_stat_tx_notify_sent;
uint64_t xnb_stat_tx_notify_deferred;
uint64_t xnb_stat_rx_notify_sent;
uint64_t xnb_stat_rx_notify_deferred;
uint64_t xnb_stat_tx_too_early;
uint64_t xnb_stat_rx_too_early;
uint64_t xnb_stat_rx_allocb_failed;
uint64_t xnb_stat_tx_allocb_failed;
uint64_t xnb_stat_rx_foreign_page;
uint64_t xnb_stat_tx_overflow_page;
uint64_t xnb_stat_tx_unexpected_flags;
uint64_t xnb_stat_mac_full;
uint64_t xnb_stat_spurious_intr;
uint64_t xnb_stat_allocation_success;
uint64_t xnb_stat_allocation_failure;
uint64_t xnb_stat_small_allocation_success;
uint64_t xnb_stat_small_allocation_failure;
uint64_t xnb_stat_other_allocation_failure;
uint64_t xnb_stat_rx_pagebndry_crossed;
uint64_t xnb_stat_rx_cpoparea_grown;
uint64_t xnb_stat_csum_hardware;
uint64_t xnb_stat_csum_software;
kstat_t *xnb_kstat_aux;
ddi_iblock_cookie_t xnb_icookie;
kmutex_t xnb_rx_lock;
kmutex_t xnb_tx_lock;
kmutex_t xnb_state_lock;
int xnb_be_status;
int xnb_fe_status;
kmem_cache_t *xnb_tx_buf_cache;
uint32_t xnb_tx_buf_count;
int xnb_tx_buf_outstanding;
netif_rx_back_ring_t xnb_rx_ring; /* rx interface struct ptr */
void *xnb_rx_ring_addr;
grant_ref_t xnb_rx_ring_ref;
grant_handle_t xnb_rx_ring_handle;
netif_tx_back_ring_t xnb_tx_ring; /* tx interface struct ptr */
void *xnb_tx_ring_addr;
grant_ref_t xnb_tx_ring_ref;
grant_handle_t xnb_tx_ring_handle;
boolean_t xnb_connected;
boolean_t xnb_hotplugged;
boolean_t xnb_detachable;
int xnb_evtchn; /* channel to front end */
evtchn_port_t xnb_fe_evtchn;
domid_t xnb_peer;
xnb_txbuf_t *xnb_tx_bufp[NET_TX_RING_SIZE];
gnttab_copy_t xnb_tx_cop[NET_TX_RING_SIZE];
caddr_t xnb_rx_va;
gnttab_transfer_t xnb_rx_top[NET_RX_RING_SIZE];
boolean_t xnb_rx_hv_copy;
boolean_t xnb_multicast_control;
boolean_t xnb_no_csum_offload;
gnttab_copy_t *xnb_rx_cpop;
#define CPOP_DEFCNT 8
size_t xnb_rx_cpop_count; /* in elements */
};
extern int xnb_attach(dev_info_t *, xnb_flavour_t *, void *);
extern void xnb_detach(dev_info_t *);
extern mblk_t *xnb_copy_to_peer(xnb_t *, mblk_t *);
extern mblk_t *xnb_process_cksum_flags(xnb_t *, mblk_t *, uint32_t);
#ifdef __cplusplus
}
#endif
#endif /* _SYS_XNB_H */
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