drivers/net/dgrs

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

INCLUDED FROM
