usr/src/uts/common/xen/io/xnf.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21
  22 /*
  23  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 #ifndef _SYS_XNF_H
  28 #define _SYS_XNF_H
  29
  30 #ifdef __cplusplus
  31 extern "C" {
  32 #endif
  33
  34 #define NET_TX_RING_SIZE  __CONST_RING_SIZE(netif_tx, PAGESIZE)
  35 #define NET_RX_RING_SIZE  __CONST_RING_SIZE(netif_rx, PAGESIZE)
  36
  37 #define XNF_MAXPKT      1500            /* MTU size */
  38 #define XNF_FRAMESIZE   1514            /* frame size including MAC header */
  39
  40 /* DEBUG flags */
  41 #define XNF_DEBUG_DDI           0x01
  42 #define XNF_DEBUG_TRACE         0x02
  43
  44 /*
  45  * Information about each receive buffer and any transmit look-aside
  46  * buffers.
  47  */
  48 typedef struct xnf_buf {
  49         frtn_t                  free_rtn;
  50         struct xnf              *xnfp;
  51         ddi_dma_handle_t        dma_handle;
  52         caddr_t                 buf;            /* DMA-able data buffer */
  53         paddr_t                 buf_phys;
  54         mfn_t                   buf_mfn;
  55         size_t                  len;
  56         struct xnf_buf          *next;  /* For linking into free list */
  57         ddi_acc_handle_t        acc_handle;
  58         grant_ref_t             grant_ref;      /* grant table reference */
  59         uint16_t                id;             /* buffer id */
  60         unsigned int            gen;
  61 } xnf_buf_t;
  62
  63 /*
  64  * Information about each transmit buffer.
  65  */
  66 typedef struct xnf_txbuf {
  67         struct xnf_txbuf        *tx_next;
  68         mblk_t                  *tx_mp; /* mblk associated with packet */
  69         netif_tx_request_t      tx_txreq;
  70         caddr_t                 tx_bufp;
  71         ddi_dma_handle_t        tx_dma_handle;
  72         mfn_t                   tx_mfn;
  73         xnf_buf_t               *tx_bdesc; /* Look-aside buffer, if used. */
  74         unsigned char           tx_type;
  75         int16_t                 tx_status;
  76         RING_IDX                tx_slot;
  77
  78 #define TX_DATA         1
  79 #define TX_MCAST_REQ    2
  80 #define TX_MCAST_RSP    3
  81 } xnf_txbuf_t;
  82
  83 /*
  84  * Information about each outstanding transmit operation.
  85  */
  86 typedef struct xnf_txid {
  87         uint16_t        id;     /* Id of this transmit buffer. */
  88         uint16_t        next;   /* Freelist of ids. */
  89         xnf_txbuf_t     *txbuf; /* Buffer details. */
  90 } xnf_txid_t;
  91
  92 /*
  93  * Per-instance data.
  94  */
  95 typedef struct xnf {
  96         /* most interesting stuff first to assist debugging */
  97         dev_info_t              *xnf_devinfo;
  98         mac_handle_t            xnf_mh;
  99         unsigned char           xnf_mac_addr[ETHERADDRL];
 100
 101         unsigned int            xnf_gen;        /* Increments on resume. */
 102
 103         boolean_t               xnf_connected;
 104         boolean_t               xnf_running;
 105
 106         boolean_t               xnf_be_rx_copy;
 107         boolean_t               xnf_be_mcast_control;
 108
 109         uint64_t                xnf_stat_interrupts;
 110         uint64_t                xnf_stat_unclaimed_interrupts;
 111         uint64_t                xnf_stat_norxbuf;
 112         uint64_t                xnf_stat_drop;
 113         uint64_t                xnf_stat_errrx;
 114
 115         uint64_t                xnf_stat_tx_attempt;
 116         uint64_t                xnf_stat_tx_pullup;
 117         uint64_t                xnf_stat_tx_pagebndry;
 118         uint64_t                xnf_stat_tx_defer;
 119         uint64_t                xnf_stat_mac_rcv_error;
 120         uint64_t                xnf_stat_runt;
 121
 122         uint64_t                xnf_stat_ipackets;
 123         uint64_t                xnf_stat_opackets;
 124         uint64_t                xnf_stat_rbytes;
 125         uint64_t                xnf_stat_obytes;
 126
 127         uint64_t                xnf_stat_tx_cksum_deferred;
 128         uint64_t                xnf_stat_rx_cksum_no_need;
 129
 130         uint64_t                xnf_stat_buf_allocated;
 131         uint64_t                xnf_stat_buf_outstanding;
 132         uint64_t                xnf_stat_gref_outstanding;
 133         uint64_t                xnf_stat_gref_failure;
 134         uint64_t                xnf_stat_gref_peak;
 135         uint64_t                xnf_stat_rx_allocb_fail;
 136         uint64_t                xnf_stat_rx_desballoc_fail;
 137
 138         kstat_t                 *xnf_kstat_aux;
 139
 140         ddi_iblock_cookie_t     xnf_icookie;
 141
 142         netif_tx_front_ring_t   xnf_tx_ring;
 143         ddi_dma_handle_t        xnf_tx_ring_dma_handle;
 144         ddi_acc_handle_t        xnf_tx_ring_dma_acchandle;
 145         paddr_t                 xnf_tx_ring_phys_addr;
 146         grant_ref_t             xnf_tx_ring_ref;
 147
 148         xnf_txid_t              xnf_tx_pkt_id[NET_TX_RING_SIZE];
 149         uint16_t                xnf_tx_pkt_id_head;
 150         kmutex_t                xnf_txlock;
 151         kmutex_t                xnf_schedlock;
 152         boolean_t               xnf_need_sched;
 153         kcondvar_t              xnf_cv_tx_slots;
 154         kmem_cache_t            *xnf_tx_buf_cache;
 155
 156         netif_rx_front_ring_t   xnf_rx_ring;
 157         ddi_dma_handle_t        xnf_rx_ring_dma_handle;
 158         ddi_acc_handle_t        xnf_rx_ring_dma_acchandle;
 159         paddr_t                 xnf_rx_ring_phys_addr;
 160         grant_ref_t             xnf_rx_ring_ref;
 161
 162         xnf_buf_t               *xnf_rx_pkt_info[NET_RX_RING_SIZE];
 163         kmutex_t                xnf_rxlock;
 164         mblk_t                  *xnf_rx_head;
 165         mblk_t                  *xnf_rx_tail;
 166         boolean_t               xnf_rx_new_buffers_posted;
 167         kmem_cache_t            *xnf_buf_cache;
 168
 169         uint16_t                xnf_evtchn;
 170
 171         kmutex_t                xnf_gref_lock;
 172         grant_ref_t             xnf_gref_head;
 173
 174         kcondvar_t              xnf_cv_state;
 175         kcondvar_t              xnf_cv_multicast;
 176         uint_t                  xnf_pending_multicast;
 177 } xnf_t;
 178
 179 #ifdef __cplusplus
 180 }
 181 #endif
 182
 183 #endif  /* _SYS_XNF_H */