Commit Graph

14 Commits

Author SHA1 Message Date
thorpej 851be78801 Start the watchdog timer in stripopen(), and make sure it's cancelled in
stripclose().  In strip_watchdog(), make abort if the line has been closed.

This fixes kern/4470 (Wolfgang Rupprecht), which was a bad pointer passed
to b_to_q() from strip_proberadio() called via strip_watchdog(); the tty
hadn't yet been attached to the strip interface.
1997-11-20 08:03:06 +00:00
thorpej 7ec7599a61 Change the interface name from "st" to "strip", so as to match the
pseudo-device option listed in the kernel config file, and to avoid
a name clash with the "SCSI tape" driver.
1997-11-17 23:35:28 +00:00
thorpej 22284276e8 Remove a gratuitous debugging printf. 1997-11-17 23:01:44 +00:00
christos 6a9f9d3292 PR/3665: Martin Husemann: if_strip calls sl_compress_init with extra arg. 1997-05-24 14:39:44 +00:00
mikel 5f50ab9716 fix bogons; from Jonathan O'Brien in PR kern/3571. 1997-05-07 04:47:15 +00:00
thorpej d1c9089a16 Update for the new mbuf code, in a slighly kludgy way. Basically, these
drivers played a somewhat evil trick with clusters, which is now
replaced by a somewhat evil trick with regular malloc'd memory.
1997-03-27 20:36:14 +00:00
cgd 8800178e5c -Wcast-qual cleanups. Don't discard 'const' when casting. 1996-10-25 22:15:54 +00:00
christos a1dcf4b026 backout previous kprintf change 1996-10-13 02:10:01 +00:00
christos 10191279fb - printf -> kprintf, sprintf -> ksprintf 1996-10-10 22:59:41 +00:00
jonathan 36c640a447 * Remove old, unused SLIP variables from softc.
* 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.
1996-08-02 02:53:39 +00:00
jonathan d41e338edc * Put in fix to in bytestuffing/RLL code from Stuart Cheshire, that
somehow got lost between NetBSD and Linux.    Output side mbuf-walking
  code now correctly bytestuffs mbuf chains, as well as single mbufs
  and clusters.

* Update radio error-parsing code to Stuart's latest stable code.
  We now parse error messages the older code didn't.

* Note where radio-crash watchdogs should be added (the linux code
  is there, #ifdef'ed out). This still just  doesn't work.
  The radio reset doesn't always work even when slattatch is first started,
  but I have a radio with old firmware, which may be a contributing factor.

* Correct the checks for the tty output queue being overfull;  estimate
  the stuffed pkt size as  (original * 65/64) + STRIP_HDRLEN + 2,
  instead of SLIP's (2*SLMTU).  Re-enable the disabled  check now the
  size estimate isn't excessively large.

* Fix BPF tapping of strip interfaces,  STRIP packets are wrapped
  in a SLIP bpf  header.   This implies no BPF support for arp or atalk,
  even though Linux boxes are sending arp requests and  gratuitous arps.
  There may be no good  fix short  of adding explicit  STRIP encapsulation
  support to bpf/tcpdump.

* Still need a solid walkthrough, and  rewrite to eliminate redundant
  receive-side mbuf copying.
1996-06-26 06:04:20 +00:00
thorpej 5804211474 Initialize sc_unit in the right place, a'la if_sl.c. Thanks to
Jonathan Stone <jonathan@DSG.Stanford.EDU> for pointing this out.
1996-06-05 23:20:49 +00:00
jonathan ed314bc45a Catch up to removal of if_unit and addition of if_xname and sc_unit,
blindly following the changes to if_sl.c.
1996-05-19 22:09:36 +00:00
jonathan 32d97e42f6 Packet-mode driver for Metricom Ricochet radios (Starmode Radio IP). 1996-05-19 16:34:36 +00:00