| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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); |