English
- /*
- * A filtering function. There are two filters/port. Filter "0"
- * is the input filter, and filter "1" is the output filter.
- */
- typedef int (FILTER_FUNC)(uchar *pktp, int pktlen, ulong *scratch, int port);
- #define NFILTERS 2
- /*
- * The per port structure
- */
- typedef struct
- {
- int chan; /* Channel number (0-3) */
- ulong portaddr; /* address of 596 port register */
- volatile ulong *ca; /* address of 596 chan attention */
- ulong intmask; /* Interrupt mask for this port */
- ulong intack; /* Ack bit for this port */
- uchar ethaddr[6]; /* Ethernet address of this port */
- int is_promisc; /* Port is promiscuous */
- int debug; /* Debugging turned on */
- I596_ISCP *iscpp; /* Uncached ISCP pointer */
- I596_SCP *scpp; /* Uncached SCP pointer */
- I596_SCB *scbp; /* Uncached SCB pointer */
- I596_ISCP iscp;
- I596_SCB scb;
- /* Command Queue */
- I596_CB *cb0;
- I596_CB *cbN;
- I596_CB *cb_head;
- I596_CB *cb_tail;
- /* Receive Queue */
- I596_RFD *rfd0;
- I596_RFD *rfdN;
- I596_RFD *rfd_head;
- I596_RFD *rfd_tail;
- /* Receive Buffers */
- I596_RBD *rbd0;
- I596_RBD *rbdN;
- I596_RBD *rbd_head;
- I596_RBD *rbd_tail;
- int buf_size; /* Size of an RBD buffer */
- int buf_cnt; /* Total RBD's allocated */
- /* Rx Statistics */
- ulong cnt_rx_cnt; /* Total packets rcvd, good and bad */
- ulong cnt_rx_good; /* Total good packets rcvd */
- ulong cnt_rx_bad; /* Total of all bad packets rcvd */
- /* Subtotals can be gotten from SCB */
- ulong cnt_rx_nores; /* No resources */
- ulong cnt_rx_bytes; /* Total bytes rcvd */
- /* Tx Statistics */
- ulong cnt_tx_queued;
- ulong cnt_tx_done;
- ulong cnt_tx_freed;
- ulong cnt_tx_nores; /* No resources */
- ulong cnt_tx_bad;
- ulong cnt_tx_err_late;
- ulong cnt_tx_err_nocrs;
- ulong cnt_tx_err_nocts;
- ulong cnt_tx_err_under;
- ulong cnt_tx_err_maxcol;
- ulong cnt_tx_collisions;
- /* Special stuff for host */
- # define rfd_freed cnt_rx_cnt
- ulong rbd_freed;
- int host_timer;
- /* Added after first beta */
- ulong cnt_tx_races; /* Counts race conditions */
- int spanstate;
- ulong cnt_st_tx; /* send span tree pkts */
- ulong cnt_st_fail_tx; /* Failures to send span tree pkts */
- ulong cnt_st_fail_rbd;/* Failures to send span tree pkts */
- ulong cnt_st_rx; /* rcv span tree pkts */
- ulong cnt_st_rx_bad; /* bogus st packets rcvd */
- ulong cnt_rx_fwd; /* Rcvd packets that were forwarded */
- ulong cnt_rx_mcast; /* Multicast pkts received */
- ulong cnt_tx_mcast; /* Multicast pkts transmitted */
- ulong cnt_tx_bytes; /* Bytes transmitted */
- /*
- * Packet filtering
- * Filter 0: input filter
- * Filter 1: output filter
- */
- ulong *filter_space[NFILTERS];
- FILTER_FUNC *filter_func[NFILTERS];
- ulong filter_cnt[NFILTERS];
- ulong filter_len[NFILTERS];
- ulong pad[ (512-300) / 4];
- } PORT;
- /*
- * Port[0] is host interface
- * Port[1..SE_NPORTS] are external 10 Base T ports. Fewer may be in
- * use, depending on whether this is an SE-4 or
- * an SE-6.
- * Port[SE_NPORTS] Pseudo-port for Spanning tree and SNMP
- */
- extern PORT Port[1+SE_NPORTS+1];
- extern int Nports; /* Number of genuine ethernet controllers */
- extern int Nchan; /* ... plus one for host interface */
- extern int FirstChan; /* 0 or 1, depedning on whether host is used */
- extern int NumChan; /* 4 or 5 */
- /*
- * A few globals
- */
- extern int IsPromisc;
- extern int MultiNicMode;
- /*
- * Functions
- */
- extern void eth_xmit_spew_on(PORT *p, int cnt);
- extern void eth_xmit_spew_off(PORT *p);
- extern I596_RBD *alloc_rbds(PORT *p, int num);
- extern I596_CB * eth_cb_alloc(PORT *p);
