1 /* $NetBSD: if_xennetvar.h,v 1.3 2004/09/15 04:55:21 tls 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 #include <machine/hypervisor-ifs/network.h> 40 41 union xennet_bufarray { 42 struct mbuf *xb_m; 43 struct { 44 vaddr_t xbrx_va; 45 paddr_t xbrx_ptpa; 46 struct xennet_softc *xbrx_sc; 47 } xb_rx; 48 int xb_next; 49 }; 50 51 struct xennet_txbuf { 52 SLIST_ENTRY(xennet_txbuf) xt_next; 53 struct xennet_softc *xt_sc; 54 paddr_t xt_pa; 55 u_char xt_buf[0]; 56 }; 57 #define TXBUF_PER_PAGE 2 58 #define TXBUF_BUFSIZE (PAGE_SIZE / TXBUF_PER_PAGE) - sizeof(struct xennet_txbuf) 59 60 struct xennet_softc { 61 struct device sc_dev; /* base device glue */ 62 struct ethercom sc_ethercom; /* Ethernet common part */ 63 64 int sc_ifno; 65 66 uint8_t sc_enaddr[6]; 67 68 #ifdef mediacode 69 struct ifmedia sc_media; 70 #endif 71 72 net_ring_t *sc_net_ring; 73 net_idx_t *sc_net_idx; 74 75 uint32_t sc_tx_entries; 76 uint32_t sc_tx_resp_cons; 77 78 uint32_t sc_rx_resp_cons; 79 uint32_t sc_rx_bufs_to_notify; 80 81 union xennet_bufarray sc_tx_bufa[TX_RING_SIZE]; 82 union xennet_bufarray sc_rx_bufa[TX_RING_SIZE]; 83 84 SLIST_HEAD(, xennet_txbuf) sc_tx_bufs; 85 #if NRND > 0 86 rndsource_element_t sc_rnd_source; 87 #endif 88 }; 89 90 struct xennet_attach_args { 91 const char *xa_device; 92 netop_t xa_netop; 93 }; 94 95 struct nfs_diskless; 96 97 int xennet_scan(struct device *, struct xennet_attach_args *, cfprint_t); 98 void xennet_start(struct ifnet *); 99 int xennet_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data); 100 void xennet_watchdog(struct ifnet *ifp); 101 int xennet_bootstatic_callback(struct nfs_diskless *); 102 103 #endif /* _XEN_IF_XENNETVAR_H_ */ 104