1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
135 lines
3.5 KiB
C
135 lines
3.5 KiB
C
/*
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* A filtering function. There are two filters/port. Filter "0"
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* is the input filter, and filter "1" is the output filter.
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*/
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typedef int (FILTER_FUNC)(uchar *pktp, int pktlen, ulong *scratch, int port);
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#define NFILTERS 2
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/*
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* The per port structure
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*/
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typedef struct
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{
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int chan; /* Channel number (0-3) */
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ulong portaddr; /* address of 596 port register */
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volatile ulong *ca; /* address of 596 chan attention */
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ulong intmask; /* Interrupt mask for this port */
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ulong intack; /* Ack bit for this port */
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uchar ethaddr[6]; /* Ethernet address of this port */
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int is_promisc; /* Port is promiscuous */
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int debug; /* Debugging turned on */
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I596_ISCP *iscpp; /* Uncached ISCP pointer */
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I596_SCP *scpp; /* Uncached SCP pointer */
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I596_SCB *scbp; /* Uncached SCB pointer */
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I596_ISCP iscp;
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I596_SCB scb;
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/* Command Queue */
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I596_CB *cb0;
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I596_CB *cbN;
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I596_CB *cb_head;
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I596_CB *cb_tail;
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/* Receive Queue */
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I596_RFD *rfd0;
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I596_RFD *rfdN;
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I596_RFD *rfd_head;
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I596_RFD *rfd_tail;
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/* Receive Buffers */
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I596_RBD *rbd0;
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I596_RBD *rbdN;
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I596_RBD *rbd_head;
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I596_RBD *rbd_tail;
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int buf_size; /* Size of an RBD buffer */
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int buf_cnt; /* Total RBD's allocated */
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/* Rx Statistics */
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ulong cnt_rx_cnt; /* Total packets rcvd, good and bad */
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ulong cnt_rx_good; /* Total good packets rcvd */
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ulong cnt_rx_bad; /* Total of all bad packets rcvd */
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/* Subtotals can be gotten from SCB */
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ulong cnt_rx_nores; /* No resources */
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ulong cnt_rx_bytes; /* Total bytes rcvd */
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/* Tx Statistics */
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ulong cnt_tx_queued;
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ulong cnt_tx_done;
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ulong cnt_tx_freed;
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ulong cnt_tx_nores; /* No resources */
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ulong cnt_tx_bad;
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ulong cnt_tx_err_late;
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ulong cnt_tx_err_nocrs;
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ulong cnt_tx_err_nocts;
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ulong cnt_tx_err_under;
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ulong cnt_tx_err_maxcol;
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ulong cnt_tx_collisions;
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/* Special stuff for host */
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# define rfd_freed cnt_rx_cnt
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ulong rbd_freed;
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int host_timer;
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/* Added after first beta */
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ulong cnt_tx_races; /* Counts race conditions */
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int spanstate;
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ulong cnt_st_tx; /* send span tree pkts */
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ulong cnt_st_fail_tx; /* Failures to send span tree pkts */
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ulong cnt_st_fail_rbd;/* Failures to send span tree pkts */
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ulong cnt_st_rx; /* rcv span tree pkts */
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ulong cnt_st_rx_bad; /* bogus st packets rcvd */
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ulong cnt_rx_fwd; /* Rcvd packets that were forwarded */
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ulong cnt_rx_mcast; /* Multicast pkts received */
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ulong cnt_tx_mcast; /* Multicast pkts transmitted */
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ulong cnt_tx_bytes; /* Bytes transmitted */
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/*
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* Packet filtering
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* Filter 0: input filter
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* Filter 1: output filter
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*/
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ulong *filter_space[NFILTERS];
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FILTER_FUNC *filter_func[NFILTERS];
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ulong filter_cnt[NFILTERS];
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ulong filter_len[NFILTERS];
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ulong pad[ (512-300) / 4];
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} PORT;
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/*
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* Port[0] is host interface
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* Port[1..SE_NPORTS] are external 10 Base T ports. Fewer may be in
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* use, depending on whether this is an SE-4 or
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* an SE-6.
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* Port[SE_NPORTS] Pseudo-port for Spanning tree and SNMP
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*/
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extern PORT Port[1+SE_NPORTS+1];
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extern int Nports; /* Number of genuine ethernet controllers */
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extern int Nchan; /* ... plus one for host interface */
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extern int FirstChan; /* 0 or 1, depedning on whether host is used */
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extern int NumChan; /* 4 or 5 */
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/*
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* A few globals
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*/
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extern int IsPromisc;
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extern int MultiNicMode;
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/*
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* Functions
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*/
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extern void eth_xmit_spew_on(PORT *p, int cnt);
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extern void eth_xmit_spew_off(PORT *p);
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extern I596_RBD *alloc_rbds(PORT *p, int num);
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extern I596_CB * eth_cb_alloc(PORT *p);
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