drivers/net/dgrs_ether.h

   1 /*
   2  *      A filtering function.  There are two filters/port.  Filter "0"
   3  *      is the input filter, and filter "1" is the output filter.
   4  */
   5 typedef int (FILTER_FUNC)(uchar *pktp, int pktlen, ulong *scratch, int port);
   6 #define NFILTERS        2
   7
   8 /*
   9  *      The per port structure
  10  */
  11 typedef struct
  12 {
  13         int             chan;           /* Channel number (0-3) */
  14         ulong           portaddr;       /* address of 596 port register */
  15         volatile ulong  *ca;            /* address of 596 chan attention */
  16         ulong           intmask;        /* Interrupt mask for this port */
  17         ulong           intack;         /* Ack bit for this port */
  18
  19         uchar           ethaddr[6];     /* Ethernet address of this port */
  20         int             is_promisc;     /* Port is promiscuous */
  21
  22         int             debug;          /* Debugging turned on */
  23
  24         I596_ISCP       *iscpp;         /* Uncached ISCP pointer */
  25         I596_SCP        *scpp;          /* Uncached SCP pointer */
  26         I596_SCB        *scbp;          /* Uncached SCB pointer */
  27
  28         I596_ISCP       iscp;
  29         I596_SCB        scb;
  30
  31         /* Command Queue */
  32         I596_CB         *cb0;
  33         I596_CB         *cbN;
  34         I596_CB         *cb_head;
  35         I596_CB         *cb_tail;
  36
  37         /* Receive Queue */
  38         I596_RFD        *rfd0;
  39         I596_RFD        *rfdN;
  40         I596_RFD        *rfd_head;
  41         I596_RFD        *rfd_tail;
  42
  43         /* Receive Buffers */
  44         I596_RBD        *rbd0;
  45         I596_RBD        *rbdN;
  46         I596_RBD        *rbd_head;
  47         I596_RBD        *rbd_tail;
  48         int             buf_size;       /* Size of an RBD buffer */
  49         int             buf_cnt;        /* Total RBD's allocated */
  50
  51         /* Rx Statistics */
  52         ulong           cnt_rx_cnt;     /* Total packets rcvd, good and bad */
  53         ulong           cnt_rx_good;    /* Total good packets rcvd */
  54         ulong           cnt_rx_bad;     /* Total of all bad packets rcvd */
  55                                         /* Subtotals can be gotten from SCB */
  56         ulong           cnt_rx_nores;   /* No resources */
  57         ulong           cnt_rx_bytes;   /* Total bytes rcvd */
  58
  59         /* Tx Statistics */
  60         ulong           cnt_tx_queued;
  61         ulong           cnt_tx_done;
  62         ulong           cnt_tx_freed;
  63         ulong           cnt_tx_nores;   /* No resources */
  64
  65         ulong           cnt_tx_bad;
  66         ulong           cnt_tx_err_late;
  67         ulong           cnt_tx_err_nocrs;
  68         ulong           cnt_tx_err_nocts;
  69         ulong           cnt_tx_err_under;
  70         ulong           cnt_tx_err_maxcol;
  71         ulong           cnt_tx_collisions;
  72
  73         /* Special stuff for host */
  74 #       define          rfd_freed       cnt_rx_cnt
  75         ulong           rbd_freed;
  76         int             host_timer;
  77
  78         /* Added after first beta */
  79         ulong           cnt_tx_races;   /* Counts race conditions */
  80         int             spanstate;
  81         ulong           cnt_st_tx;      /* send span tree pkts */
  82         ulong           cnt_st_fail_tx; /* Failures to send span tree pkts */
  83         ulong           cnt_st_fail_rbd;/* Failures to send span tree pkts */
  84         ulong           cnt_st_rx;      /* rcv span tree pkts */
  85         ulong           cnt_st_rx_bad;  /* bogus st packets rcvd */
  86         ulong           cnt_rx_fwd;     /* Rcvd packets that were forwarded */
  87
  88         ulong           cnt_rx_mcast;   /* Multicast pkts received */
  89         ulong           cnt_tx_mcast;   /* Multicast pkts transmitted */
  90         ulong           cnt_tx_bytes;   /* Bytes transmitted */
  91
  92         /*
  93          *      Packet filtering
  94          *      Filter 0: input filter
  95          *      Filter 1: output filter
  96          */
  97
  98         ulong           *filter_space[NFILTERS];
  99         FILTER_FUNC     *filter_func[NFILTERS];
 100         ulong           filter_cnt[NFILTERS];
 101         ulong           filter_len[NFILTERS];
 102
 103         ulong           pad[ (512-300) / 4];
 104 } PORT;
 105
 106 /*
 107  *      Port[0]                 is host interface
 108  *      Port[1..SE_NPORTS]      are external 10 Base T ports.  Fewer may be in
 109  *                              use, depending on whether this is an SE-4 or
 110  *                              an SE-6.
 111  *      Port[SE_NPORTS]         Pseudo-port for Spanning tree and SNMP
 112  */
 113 extern PORT     Port[1+SE_NPORTS+1];
 114
 115 extern int      Nports;         /* Number of genuine ethernet controllers */
 116 extern int      Nchan;          /* ... plus one for host interface */
 117
 118 extern int      FirstChan;      /* 0 or 1, depedning on whether host is used */
 119 extern int      NumChan;        /* 4 or 5 */
 120
 121 /*
 122  *      A few globals
 123  */
 124 extern int      IsPromisc;
 125 extern int      MultiNicMode;
 126
 127 /*
 128  *      Functions
 129  */
 130 extern void     eth_xmit_spew_on(PORT *p, int cnt);
 131 extern void     eth_xmit_spew_off(PORT *p);
 132
 133 extern I596_RBD *alloc_rbds(PORT *p, int num);
 134
 135 extern I596_CB * eth_cb_alloc(PORT *p);