Bill Paul 51b875b355 Fix some stability problems: ... - Normally, the driver allocates an mbuf cluster for each receive descriptor. This is because we have to be prepared to accomodate up to 1500 bytes (a cluster buffer can hold up to 2K). However, using up a whole cluster buffer for a tiny packet is a bit of a waste. Also, it seems to me that sometimes mbufs will linger in the kernel for a while after being passed out of the driver, which means we might drain the mbuf cluster pool. The cluster pool is smaller than the mbuf pool in general, so we do the following: if the packet is less that MINCLSIZE bytes, then we copy it into a small mbuf chain and leave the mbuf cluster in place for another go-round. This saves mbuf clusters in some cases while still allowing them to be used for heavy traffic exchanges with lots of full-sized frames. - The transmit descriptor has a bit in the control word which allows the driver to request that a 'TX OK' interrupt be generated when a frame has been completed. Sometimes, a frame can be fragmented across several descriptors. The manual for the real DEC 21140A says that if this happens, the 'TX interrupt request' bit is only valid in the descriptor of the last fragment. With the ASIX chip, it seems the 'TX interrupt request' bit is only valid in the descriptor of the _first_ fragment. Actually, the manual contains conflicting information, but I think it's supposed to be the first fragment. To play it safe, set the bit in both the first and last fragment to be sure that we get a TX OK interrupt. Without this fix, the driver can sometimes be late in releasing mbufs from the transmit queue after transmission.		1999-01-16 06:19:38 +00:00
..
alpha	Oops, add the NMBCLUSTERS initialiser for the Alpha as well.	1999-01-15 18:00:19 +00:00
amd64	Fetch an overide for NMBCLUSTERS from the kernel environment. Never allow	1999-01-15 17:24:05 +00:00
boot	Replace duplicated "old" linker set definitions with an include of	1999-01-16 03:25:24 +00:00
cam	More bandaids. One important one from Sascha Blank	1999-01-16 04:02:31 +00:00
coda	Don't pass unused unused timestamp args to UFS_UPDATE() or waste	1999-01-07 16:14:19 +00:00
compat	Fix linux sendmsg() emulation	1999-01-11 05:28:44 +00:00
compile
conf	Use a fast interrupt handler for the PCI version of the cy driver	1999-01-15 10:00:12 +00:00
contrib/softupdates	Don't pass unused unused timestamp args to UFS_UPDATE() or waste	1999-01-07 16:14:19 +00:00
ddb	Replace includes of <sys/kernel.h> with includes of	1999-01-14 06:22:10 +00:00
dev	Add two missing break statements.	1999-01-15 23:24:23 +00:00
fs	Remove declarations for undefined functions and a couple of unused	1999-01-12 11:49:30 +00:00
geom
gnu	Avoid warning for unused variable.	1999-01-11 23:32:35 +00:00
i4b	Silence warnings.	1999-01-12 11:05:03 +00:00
i386	Don't let bugs in ide_pci.c break wdprobe(), at least for standard	1999-01-16 01:06:23 +00:00
isa	Fixed corruption of the fd buffer queue. Once upon a time, the active	1999-01-15 09:15:27 +00:00
isofs/cd9660
kern	Add getenv_int(), specifically for retrieving integer values from kernel	1999-01-15 17:25:02 +00:00
libkern
miscfs	Remove declarations for undefined functions and a couple of unused	1999-01-12 11:49:30 +00:00
modules	Calculate the number of bitmap colors in the correct way.	1999-01-13 09:59:30 +00:00
msdosfs
net	Remove unused variable & clean up a couple of style issues.	1999-01-12 12:07:00 +00:00
netatalk	De-staticize and add prototype for main debug function. I'll turn	1999-01-12 12:09:27 +00:00
netatm
netinet	... _and_ the (void*) casts for %p. Next, I'll forget my own name :-(	1999-01-12 16:43:52 +00:00
netipx	Remove functions that are no longer in use.	1999-01-12 12:37:18 +00:00
netkey	#ifdef out unused function key_freetables.	1999-01-12 12:38:31 +00:00
netnatm
netns
nfs	Remove two cases of unused variable sp3.	1999-01-12 12:39:14 +00:00
nfsclient	Remove two cases of unused variable sp3.	1999-01-12 12:39:14 +00:00
nfsserver	Remove the 'waslocked' parameter to vfs_object_create().	1999-01-05 18:50:03 +00:00
pc98	Add a prototype to silence warnings.	1999-01-12 01:28:00 +00:00
pccard
pci	Fix some stability problems:	1999-01-16 06:19:38 +00:00
posix4
powerpc
rpc
sys	Add getenv_int(), specifically for retrieving integer values from kernel	1999-01-15 17:25:02 +00:00
tools
ufs	Silence warning about unused debug function. (I'll turn this function	1999-01-12 11:42:41 +00:00
vm	KNFize, by bde.	1999-01-10 01:58:29 +00:00
Makefile