changelog

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2000-09-26  Hugo Tyson  <[e-mail]>
2000-09-25  Andrew Lunn <[e-mail]>

	* src/lib/tftp_server.c: Send an ERROR packet when giving up after
	too many timeouts.  This should cause the client to give up as
	well.  Also moved all the replicated code to send an ERROR packet
	into one function.

	[Huge] I collected another point where we can use the common
	function also, and used ETIMEOUT instead of EBADOP for the new
	error packet returns. Thanks Andrew!
	
2000-09-14  Hugo Tyson  <[e-mail]>

	* cdl/net.cdl (CYGOPT_NET_DHCP_DHCP_THREAD_PARAM): Set default to
	1 so that the DHCP management thread loops forever.  This allows
	it to recover from a DHCP renewal failure.

	* src/lib/dhcp_prot.c (next_timeout): Harden the DHCP protocol
	machine against [simulated] failures - otherwise the tests with
	simulated failures tend just to close down all the interfaces when
	DHCP packets are lost.

2000-09-11  Gary Thomas  <[e-mail]>

	* src/lib/bootp_support.c (init_net): Set default route correctly.

2000-09-01  Hugo Tyson  <[e-mail]>

	* src/ecos/support.c (cyg_net_init): You can't print things while
	initializing the network!  Well, not if connected to GDB over the
	network anyway.  The printf("Init device '%s'...); removed.

2000-09-01  Hugo Tyson  <[e-mail]>

	* OVERVIEW: This is part of the change to the network stack to
	greatly reduce latencies both of (other) DSRs and of thread
	scheduling.  All the work that the network stack *and* individual
	ether drivers used to do in DSRs (including alarm callbacks and
	data copies to/from the device memory) is moved into a "fast
	network thread" instead.  It calls a device's "deliver" function
	to do the work that was previously in the DSR.  This is a separate
	thread so that it can be set higher priority than application
	threads in order to minimize packet loss (depending on the
	driver), if required (the application threads presumed to be
	higher priority in turn than the network thread).  A crucial
	consequence of this is that we are no longer locking against DSRs,
	so a plain mutex can be used rather than the global scheduler
	lock, thus simplifying all the splfoo/splx() style functions.

	* src/ecos/timeout.c (alarm_thread): Addition of the "fast network
	thread" which runs DSR-like activities.
	(do_timeout): Timeout function morphed for calling from that.
	(do_alarm, ecos_synch_eth_drv_dsr): new DSR functions to signal to
	the thread.
	(timeout): Race condition fixed.  splinternal() used for locking
	instead of scheduler.
	
	* src/ecos/support.c (cyg_net_init): Splfoo/splx() functions,
	together with tsleep/wakeup functions, all removed to separate
	them from the mixed bag of utilities in this file.  What remains
	is mbuf wrapper routines and the like, plus the network "netisr"
	thread itself, the caller into the stack that does the slower
	priority work.

	* src/ecos/synch.c: New file; implemtation of new splfoo/splx()
	functions, together with tsleep/wakeup functions, since they are
	related now.

	* cdl/net.cdl: Compile new file synch.c; two new options, one for
	"fast thread" priority, and one for DHCP manager thread priority,
	as I was adding prio configury.  CYGPKG_NET_FAST_THREAD_PRIORITY
	and CYGPKG_NET_DHCP_THREAD_PRIORITY resp, with suitable default
	values relative to the CYGPKG_NET_THREAD_PRIORITY.

	* src/lib/dhcp_support.c (dhcp_start_dhcp_mgt_thread): Use the
	configured priority rather than just "net thread - 1"

2000-08-31  Hugo Tyson  <[e-mail]>

	* tests/tcp_echo.c: Change the priorities of the main and loading
	threads to accommodate the network having helper threads around at
	adjacent priorities to its main thread prio.

2000-08-24  Hugo Tyson  <[e-mail]>

	* src/sys/net/if.c (ifioctl): Support the two new ioctl() keys; at
	this level, the struct ifreq at the head of the data area must be
	filled to select an interface.

	* include/sys/sockio.h (SIOCGIFSTATSUD): Add two new eCos-only
	ioctl() keys, SIOCGIFSTATSUD and SIOCGIFSTATS, for reading
	statistical information out of ethernet devices, for SNMP. This
	should allow SNMP (a) to not explode, (b) to get useful info out
	of other device implementations than this one.

2000-08-17  Hugo Tyson  <[e-mail]>

	* src/ecos/timeout.c (timeout): Rework the timeout system to
	record last-time-we-set-the-alarm and whence values, so that new
	timeouts being added can be set up relative to the correct
	absolute time.  Otherwise adding a new timeout sets them *all*
	into the future by the expired portion of the previous minimum
	pending timeout.  Also deal better with recursion ie. timeout
	handlers themselves setting new timeouts as is only natural.
	Lots of asserts too.

	* src/ecos/support.c (cyg_splsoftnet): Use the new kernel facility
	to lock mutex &c atomically, with the scheduler locked already.
	(cyg_tsleep): Similarly, and reclaim the mutex likewise.
	Also added lots of asserts to both calls the better to document
	what's going on.

2000-08-17  Hugo Tyson  <[e-mail]>

	* src/lib/tftp_server.c: Fix contributors field.

2000-08-16  Hugo Tyson  <[e-mail]>

	* src/lib/tftp_server.c: Improvements to server wrt better error
	messages and detection of filesystem errors eg. on close-file.
	Contrib from ASCOM.  I tidied up some comments and indent to
	minimize the diff.  [CASE 104354]

2000-08-15  Hugo Tyson  <[e-mail]>

	* doc/bridge.html: New file...
	* doc/bridge.doc: New file...
	provided by ASCOM from the OpenBSD version.

2000-08-15  Hugo Tyson  <[e-mail]>

	* src/sys/net/if_bridge.c (bridge_ioctl): SIOCBRDGSTO takes
	argument in seconds not in ticks.  So move around some mul/div by
	hz ops to get this right.

2000-08-14  Gary Thomas  <[e-mail]>

	* src/ecos/support.c: Use new table definition mechanism.

2000-07-27  Hugo Tyson  <[e-mail]>

	* src/lib/dhcp_prot.c (do_dhcp): Use xmit->bp_htype =
	HTYPE_ETHERNET rather than ifr.ifr_hwaddr.sa_family; sa_family is
	in a different namespace, despite appearances.

	* src/lib/bootp_support.c (do_bootp): Use bp_htype =
	HTYPE_ETHERNET rather than ifr.ifr_hwaddr.sa_family; sa_family is
	in a different namespace, despite appearances.

2000-07-27  Nick Garnett  <[e-mail]>

	* cdl/net.cdl: Require the C library STDIO package to be present
	if there is more than one loopback interface. This is because it
	needs sprintf() to form the interface names.

	* src/sys/net/if_loop.c (loopattach): 
	Only use sprintf() to form the loopback interface names when there
	is more than one. The CDL ensures that this will work.

	* src/lib/network_support.c:
	Added diag_printf() version of perror() for when STDIO package is
	absent.
	Only use sprintf() to form the loopback interface names when there
	is more than one. The CDL ensures that this will work.

	* tests/multi_lo_select.c:
	* tests/ping_lo_test.c:
	* tests/tcp_lo_test.c:
	Removed dependence on C library by adding a substitute perror()
	based on diag_printf() that is enabled when the STDIO package is
	absent.
	
2000-07-26  Hugo Tyson  <[e-mail]>
 
	* src/lib/dhcp_prot.c (do_dhcp): Set the broadcast flag where
	necessary, and the client address too.  This makes it talk to a
	greater range of servers OK.
 
2000-07-25  Nick Garnett  <[e-mail]>

	* tests/multi_lo_select.c: Changed definition of NLISTENERS to
	work correctly with FILEIO package.

	* src/sys/net/if_loop.c (loopattach): Changed initialization of
	if_xname to "lo0".

	* src/ecos/support.c (cyg_net_init): Removed redundant code to
	initialize loop-back interface.

2000-07-25  Hugo Tyson  <[e-mail]>

	* src/lib/getserv.c: Add a list terminator record with NULLs in it
	so that the search finishes (without throwing asserts about bad
	strings).

2000-07-21  Hugo Tyson  <[e-mail]>

	* src/sys/net/if_bridge.c: Move the include of stdio.h lower,
	apparently it confuses local x86 compilers if their host tree is
	malformed.  Or something.

2000-07-21  Hugo Tyson  <[e-mail]>

	* cdl/net.cdl: Add a lot of description about the way the various
	fields are used in interface initialization: specifically that
	"server" so-called is just "someone to talk to" in the absence of
	bootp - and our tests depend on it!

	* src/lib/bootp_support.c (init_net): Only set up a route if the
	route address is nonzero - or all manner of confusion occurs with
	multiple interfaces and route that sends to 0.0.0.0...
	For setting up the default route, use
	      (SIOCADDRT, 0, 0, TAG_GATEWAY)
	rather than the bogus
	      (SIOCADDRT, yiaddr & netmask, netmask, TAG_GATEWAY)
	that we did before.

	* tests/ftp_test.c (ftp_test): Try it with eth1 if available also.

	* tests/ping_test.c (ping_host): If a ping fails, reset the packet
	size to small just in case the huge packet size is what's causing
	confusion - helps it as a debug tool.

	* tests/dhcp_test.c (net_test): It didn't compile if DHCP is
	disabled!  Doh.  Same change as ping_test also.

2000-07-19  Hugo Tyson  <[e-mail]>

	* src/lib/tftp_server.c (tftpd_read_file): Deal with a) [assumed]
	timeouts on the select, and b) ACKs for old packets.
	[CASE 104052 and CASE 104055]

2000-07-19  Hugo Tyson  <[e-mail]>

	* src/lib/select.c (_cyg_select): Return 0 and do not perturb
	errno when the timeout occurs.  That matches the man page!
	[CASE 104054]

2000-07-19  Hugo Tyson  <[e-mail]>

	* include/machine/param.h: Be more defensive against warnings from
	external defines such as __linux__/__bsdi__/__FreeBSD__/...
	[CASE 104090]

2000-07-19  Hugo Tyson  <[e-mail]>

	* tests/multi_lo_select.c: New test program to test for proper
	broadcast behaviour of select() implementation.  Took some
	fiddling to get it to work, but it really did fail before the
	select change below.

	* cdl/net.cdl: Build the new test.

	* src/lib/select.c (_cyg_select): Don't use the CLR flag in the
	flag wait because that gives unicast semantics.  Flags have
	producer-does-all-the-work behaviour, so setting a value then
	clearing it right afterwards does the right thing, with broadcast
	semantics so long as no waiter has set the CLR part.
	[CASE 104058]

2000-07-18  Hugo Tyson  <[e-mail]>

	All part of the bridge contribution from Andrew Lunn/ASCOM
	([e-mail]).  Bridginess is controlled by NBRIDGE which
	is itself controlled by CDL option CYGPKG_NET_NBRIDGE aka "Number
	of bridge buffers?"

	* include/machine/param.h: Add proper definition of untimeout().

	* include/sys/sockio.h (SIOCBRDGFRL): Add this and the other 2
	bridge ioctl() call definitions. 

	* include/sys/param.h (splhigh): Added.

	* src/ecos/timeout.c (untimeout): Implement this properly, it was
	never used before.

	* src/ecos/support.c: implement cyg_splhigh(), call bridgeintr()
	when it is scheduled and bridgeattach() if configured.

	* tests/bridge.c: New "test" file - implements an ethernet bridge.
	Contributed by Andrew Lunn/ASCOM, from the usual OpenBSD external
	source original.

	* include/net/if_bridge.h: New file, contributed by Andrew Lunn/
	ASCOM, from OpenBSD original.  (Actually did exist in eCos source
	tree but was not released)

	* src/sys/net/if_bridge.c: New file, contributed by Andrew Lunn/
	ASCOM, from OpenBSD original.

	* cdl/net.cdl: Build the new files.

2000-07-18  Gary Thomas  <[e-mail]>

	* src/lib/tftp_client.c (tftp_get): Fix edge condition when 
	penultimate block is full and end of file which implies that
	the last block has zero data bytes.

2000-07-18  Hugo Tyson  <[e-mail]>

	* src/lib/dhcp_prot.c: Ignore NAK messages from the wrong server -
	we get these because the REQUEST for our chosen IP is broadcast,
	so other servers think we've asked to use the wrong IP.

2000-07-14  Hugo Tyson  <[e-mail]>

	* include/bootp.h: export init_loopback_interface();

2000-07-14  Hugo Tyson  <[e-mail]>

	* cdl/net.cdl: Add option controlling whether to have a separate
	DHCP lease management thread, and what its parameter is to be -
	which controls whether it loops or quits if a lease fails.

	* src/lib/dhcp_support.c (dhcp_start_dhcp_mgt_thread): Provide the
	DHCP management thread function and code to instantiate and start
	the thread if so configured.

	* src/lib/network_support.c (init_all_network_interfaces): Call
	the function that starts the DHCP management thread function.

	* include/dhcp.h: Declare the DHCP management thread function &c
	if so configured.

	* tests/dhcp_test.c (net_test): Only poll for need to rebind DHCP
	leases if there is no service thread to do the same.

2000-07-14  Hugo Tyson  <[e-mail]>

	* include/bootp.h (build_bootp_record): Export this, no harm in
	it, and some folk want to use this rather than configured
	initialization or bootp/dhcp.
	Also commented the other APIs somewhat better.

	* src/lib/network_support.c (build_bootp_record): Unconditionally
	provide this; selective linking will look after it if unused.

2000-07-14  Hugo Tyson  <[e-mail]>

	* src/lib/network_support.c (build_bootp_record): [Static
	configuration of interface parameters] Add the gateway into the
	options section with TAG_GATEWAY so that init_net() will pick it
	up and set up a route accordingly.