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mateuszvis |
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/*!\file net/if_strip.h
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* SLIP interface structures.
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*/
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/* $NetBSD: if_stripvar.h,v 1.4.8.1 1997/11/17 23:36:16 thorpej Exp $ */
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/*
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* Definitions for SLIP interface data structures
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*
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* (This exists so programs like slstats can get at the definition
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* of sl_softc.)
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*/
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#ifndef __NET_IF_STRIP_H
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#define __NET_IF_STRIP_H
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struct strip_softc {
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struct ifnet sc_if; /* network-visible interface */
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int sc_unit; /* XXX unit number */
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struct ifqueue sc_fastq; /* interactive output queue */
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struct tty *sc_ttyp; /* pointer to tty structure */
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u_char *sc_mp; /* pointer to next available buf char */
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u_char *sc_ep; /* pointer to last available buf char */
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u_char *sc_buf; /* input buffer */
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u_char *sc_rxbuf; /* input destuffing buffer */
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u_char *sc_txbuf; /* output stuffing buffer */
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u_char *sc_xxx; /* XXX don't ask... */
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u_int sc_flags; /* see below */
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long sc_oqlen; /* previous output queue size */
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long sc_otimeout; /* number of times output's stalled */
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#ifdef __NetBSD__
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int sc_oldbufsize; /* previous output buffer size */
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int sc_oldbufquot; /* previous output buffer quoting */
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#endif
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#ifdef INET /* XXX */
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struct slcompress sc_comp; /* tcp compression data */
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#endif
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int sc_state; /* Radio reset state-machine */
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#define ST_ALIVE 0x0 /* answered probe */
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#define ST_PROBE_SENT 0x1 /* probe sent, answer pending */
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#define ST_DEAD 0x2 /* no answer to probe; do reset */
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long sc_statetimo; /* When (secs) current state ends */
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caddr_t sc_bpf; /* BPF data */
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};
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/* Internal flags */
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#define SC_ERROR 0x0001 /* Incurred error reading current pkt*/
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#define SC_TIMEOUT 0x00000400 /* timeout is currently pending */
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/* visible flags */
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#define SC_COMPRESS IFF_LINK0 /* compress TCP traffic */
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#define SC_NOICMP IFF_LINK1 /* supress ICMP traffic */
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#define SC_AUTOCOMP IFF_LINK2 /* auto-enable TCP compression */
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#endif
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