36c640a447
* Fix radio error-message parsing bug: old comparison against error prefix string off by the size of the Starmode link-level protocol field. * Fix radio reset finite state machine, given that parsing works properly. * Add debugging messages about reset FSM if IFF_DEBUG is set. * Remove #ifdefs notdef around back the check that discards newlines at the beginning of a frame. Every error message from the radio has a newline, as the radio send error messages terminated by \r\n, not just \r like data frames. Not dropping the \n garbles the following data frame. * Remove unused low-level debugging routines. * Reformat the low-level bytestuff/RLL code to match the canonical source. * Reduce MTU to 1100 bytes; 1200 bytes can overflow the radio buffers if the bytestuff/RLL does poorly. * Fix radio-probe string to _not_ include a frame delimiter (\r): sending a \r to the radio tickles a bug in the firmware, causing the radio to smash the next frame sent after the "**\r" probe string. * Add calls to the tty t_oproc routine to make sure the probe and reset strings get sent to the modem promptly, rather than waiting for the next packet. * Add PPP-style calls to the tty start-output function; seems to reduce latency marginally. still to do: * Flush output queue if resetting, since the radio is going to drop frames on the floor anyway if it needs resetting. * Reduce tty start-output calls.
62 lines
2.1 KiB
C
62 lines
2.1 KiB
C
/* $NetBSD: if_stripvar.h,v 1.3 1996/08/02 02:53:39 jonathan 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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struct st_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_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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#ifdef _KERNEL
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void stripattach __P((int n));
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void stripclose __P((struct tty *));
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void stripinput __P((int, struct tty *));
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int stripioctl __P((struct ifnet *, u_long, caddr_t));
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int stripopen __P((dev_t, struct tty *));
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int stripoutput __P((struct ifnet *,
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struct mbuf *, struct sockaddr *, struct rtentry *));
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void stripstart __P((struct tty *));
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int striptioctl __P((struct tty *, u_long, caddr_t, int));
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#endif /* _KERNEL */
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