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if_xennetvar.h revision 1.8 
      1 /*	$NetBSD: if_xennetvar.h,v 1.8 2005/09/11 13:20:00 bouyer Exp $	*/
      2 
      3 /*
      4  *
      5  * Copyright (c) 2004 Christian Limpach.
      6  * All rights reserved.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  * 1. Redistributions of source code must retain the above copyright
     12  *    notice, this list of conditions and the following disclaimer.
     13  * 2. Redistributions in binary form must reproduce the above copyright
     14  *    notice, this list of conditions and the following disclaimer in the
     15  *    documentation and/or other materials provided with the distribution.
     16  * 3. All advertising materials mentioning features or use of this software
     17  *    must display the following acknowledgement:
     18  *      This product includes software developed by Christian Limpach.
     19  * 4. The name of the author may not be used to endorse or promote products
     20  *    derived from this software without specific prior written permission.
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     23  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     24  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     25  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     26  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     27  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     28  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     29  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     30  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     31  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     32  */
     33 
     34 
     35 #ifndef _XEN_IF_XENNETVAR_H_
     36 #define _XEN_IF_XENNETVAR_H_
     37 
     38 #include <machine/xen.h>
     39 
     40 union xennet_bufarray {
     41 	struct {
     42 		struct mbuf *xbtx_m;
     43 	} xb_tx;
     44 	struct {
     45 		vaddr_t xbrx_va;
     46 		paddr_t xbrx_pa;
     47 		struct xennet_softc *xbrx_sc;
     48 	} xb_rx;
     49 	int xb_next;
     50 };
     51 
     52 struct xennet_softc {
     53 	struct device		sc_dev;		/* base device glue */
     54 	struct ethercom		sc_ethercom;	/* Ethernet common part */
     55 
     56 	int			sc_ifno;
     57 
     58 	uint8_t			sc_enaddr[6];
     59 
     60 #ifdef mediacode
     61 	struct ifmedia		sc_media;
     62 #endif
     63 
     64 	/* What is the status of our connection to the remote backend? */
     65 #define BEST_CLOSED       0
     66 #define BEST_DISCONNECTED 1
     67 #define BEST_CONNECTED    2
     68 	unsigned int		sc_backend_state;
     69 
     70 	unsigned int		sc_evtchn;
     71 
     72 	netif_tx_interface_t	*sc_tx;
     73 	netif_rx_interface_t	*sc_rx;
     74 	struct vm_page		*sc_pg_tx;
     75 	struct vm_page		*sc_pg_rx;
     76 
     77 	uint32_t		sc_tx_entries;
     78 	uint32_t		sc_tx_resp_cons;
     79 
     80 	uint32_t		sc_rx_resp_cons;
     81 	uint32_t		sc_rx_bufs_to_notify;
     82 
     83 	union xennet_bufarray	sc_tx_bufa[NETIF_TX_RING_SIZE];
     84 	union xennet_bufarray	sc_rx_bufa[NETIF_RX_RING_SIZE];
     85 
     86 #if NRND > 0
     87 	rndsource_element_t	sc_rnd_source;
     88 #endif
     89 };
     90 
     91 struct xennet_attach_args {
     92 	const char 		*xa_device;
     93 	int			xa_handle;
     94 };
     95 
     96 struct nfs_diskless;
     97 
     98 int xennet_scan(struct device *, struct xennet_attach_args *, cfprint_t);
     99 void xennet_start(struct ifnet *);
    100 int xennet_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data);
    101 void xennet_watchdog(struct ifnet *ifp);
    102 int xennet_bootstatic_callback(struct nfs_diskless *);
    103 
    104 #endif /* _XEN_IF_XENNETVAR_H_ */
    105