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/******************************************************************************
* arch/xen/drivers/netif/backend/common.h
*/
#ifndef __NETIF__BACKEND__COMMON_H__
#define __NETIF__BACKEND__COMMON_H__
#include <linux/config.h>
#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/slab.h>
#include <linux/ip.h>
#include <linux/in.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <asm/ctrl_if.h>
#include <asm/io.h>
#include "../netif.h"
#include "../../../../../net/bridge/br_private.h"
#ifndef NDEBUG
#define ASSERT(_p) \
if ( !(_p) ) { printk("Assertion '%s' failed, line %d, file %s", #_p , \
__LINE__, __FILE__); *(int*)0=0; }
#define DPRINTK(_f, _a...) printk("(file=%s, line=%d) " _f, \
__FILE__ , __LINE__ , ## _a )
#else
#define ASSERT(_p) ((void)0)
#define DPRINTK(_f, _a...) ((void)0)
#endif
typedef struct netif_st {
/* Unique identifier for this interface. */
domid_t domid;
unsigned int handle;
/* Physical parameters of the comms window. */
unsigned long tx_shmem_frame;
unsigned long rx_shmem_frame;
unsigned int evtchn;
int irq;
/* The shared rings and indexes. */
netif_tx_interface_t *tx;
netif_rx_interface_t *rx;
/* Private indexes into shared ring. */
NETIF_RING_IDX rx_req_cons;
NETIF_RING_IDX rx_resp_prod; /* private version of shared variable */
NETIF_RING_IDX tx_req_cons;
NETIF_RING_IDX tx_resp_prod; /* private version of shared variable */
/* Transmit shaping: allow 'credit_bytes' every 'credit_usec'. */
unsigned long credit_bytes;
unsigned long credit_usec;
unsigned long remaining_credit;
struct timer_list credit_timeout;
/* Miscellaneous private stuff. */
enum { DISCONNECTED, DISCONNECTING, CONNECTED } status;
/*
* DISCONNECT response is deferred until pending requests are ack'ed.
* We therefore need to store the id from the original request.
*/
u8 disconnect_rspid;
struct netif_st *hash_next;
struct list_head list; /* scheduling list */
atomic_t refcnt;
spinlock_t rx_lock, tx_lock;
struct net_device *dev;
struct net_device_stats stats;
} netif_t;
void netif_create(netif_be_create_t *create);
void netif_destroy(netif_be_destroy_t *destroy);
void netif_connect(netif_be_connect_t *connect);
int netif_disconnect(netif_be_disconnect_t *disconnect, u8 rsp_id);
void __netif_disconnect_complete(netif_t *netif);
netif_t *netif_find_by_handle(domid_t domid, unsigned int handle);
#define netif_get(_b) (atomic_inc(&(_b)->refcnt))
#define netif_put(_b) \
do { \
if ( atomic_dec_and_test(&(_b)->refcnt) ) \
__netif_disconnect_complete(_b); \
} while (0)
void netif_interface_init(void);
void netif_ctrlif_init(void);
void netif_deschedule(netif_t *netif);
int netif_be_start_xmit(struct sk_buff *skb, struct net_device *dev);
struct net_device_stats *netif_be_get_stats(struct net_device *dev);
void netif_be_int(int irq, void *dev_id, struct pt_regs *regs);
#endif /* __NETIF__BACKEND__COMMON_H__ */
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