Commit Graph

10 Commits

Author SHA1 Message Date
Jeff Garzik
5a40f09baa [netdrvr] natsemi: Separate out media initialization code
This makes it easier to merge an upcoming patch, and overall makes the
code a bit more clean.

Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-06-26 22:24:03 -04:00
Herbert Xu
932ff279a4 [NET]: Add netif_tx_lock
Various drivers use xmit_lock internally to synchronise with their
transmission routines.  They do so without setting xmit_lock_owner.
This is fine as long as netpoll is not in use.

With netpoll it is possible for deadlocks to occur if xmit_lock_owner
isn't set.  This is because if a printk occurs while xmit_lock is held
and xmit_lock_owner is not set can cause netpoll to attempt to take
xmit_lock recursively.

While it is possible to resolve this by getting netpoll to use
trylock, it is suboptimal because netpoll's sole objective is to
maximise the chance of getting the printk out on the wire.  So
delaying or dropping the message is to be avoided as much as possible.

So the only alternative is to always set xmit_lock_owner.  The
following patch does this by introducing the netif_tx_lock family of
functions that take care of setting/unsetting xmit_lock_owner.

I renamed xmit_lock to _xmit_lock to indicate that it should not be
used directly.  I didn't provide irq versions of the netif_tx_lock
functions since xmit_lock is meant to be a BH-disabling lock.

This is pretty much a straight text substitution except for a small
bug fix in winbond.  It currently uses
netif_stop_queue/spin_unlock_wait to stop transmission.  This is
unsafe as an IRQ can potentially wake up the queue.  So it is safer to
use netif_tx_disable.

The hamradio bits used spin_lock_irq but it is unnecessary as
xmit_lock must never be taken in an IRQ handler.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-06-17 21:30:14 -07:00
Randy Dunlap
e19360f294 [PATCH] net drivers: fix section attributes for gcc
If CONFIG_HOTPLUG=n, gcc doesn't like some __initdata to be const (rodata)
and other __initdata not const, so make the non-const __initdata const.

gcc errors:
drivers/net/bnx2.c:66: error: version causes a section type conflict
drivers/net/starfire.c:338: error: version causes a section type conflict
drivers/net/typhoon.c:137: error: version causes a section type conflict
drivers/net/natsemi.c:241: error: version causes a section type conflict

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-04-12 18:08:45 -04:00
Mark Brown
a8b4cf42cf [PATCH] natsemi: Support oversized EEPROMs
The natsemi chip can have a larger EEPROM attached than it itself uses for
configuration.  This patch adds support for user space access to such an
EEPROM.

Signed-off-by: Mark Brown <broonie@sirena.org.uk>
Cc: Tim Hockin <thockin@hockin.org>
Cc: Jeff Garzik <jgarzik@pobox.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-29 17:34:02 -05:00
Mark Brown
e72fd96e8e [PATCH] natsemi: NAPI and a bugfix
As documented in National application note 1287 the RX state machine on
the natsemi chip can lock up under some conditions (mostly related to
heavy load).  When this happens a series of bogus packets are reported
by the chip including some oversized frames prior to the final lockup.

This patch implements the fix from the application note: when an
oversized packet is reported it resets the RX state machine, dropping
any currently pending packets.

Signed-off-by: Mark Brown <broonie@sirena.org.uk>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-04 12:14:56 -05:00
Mark Brown
b27a16b7c4 [PATCH] natsemi: NAPI and a bugfix
This patch converts the natsemi driver to use NAPI.  It was originally
based on one written by Harald Welte, though it has since been modified
quite a bit, most extensively in order to remove the ability to disable
NAPI since none of the other drivers seem to provide that functionality
any more.

Signed-off-by: Mark Brown <broonie@sirena.org.uk>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-04 12:14:56 -05:00
Arjan van de Ven
f71e130966 Massive net driver const-ification. 2006-03-03 21:33:57 -05:00
David S. Miller
689be43945 [NET]: Remove gratuitous use of skb->tail in network drivers.
Many drivers use skb->tail unnecessarily.

In these situations, the code roughly looks like:

	dev = dev_alloc_skb(...);

	[optional] skb_reserve(skb, ...);

	... skb->tail ...

But even if the skb_reserve() happens, skb->data equals
skb->tail.  So it doesn't make any sense to use anything
other than skb->data in these cases.

Another case was the s2io.c driver directly mucking with
the skb->data and skb->tail pointers.  It really just wanted
to do an skb_reserve(), so that's what the code was changed
to do instead.

Another reason I'm making this change as it allows some SKB
cleanups I have planned simpler to merge.  In those cleanups,
skb->head, skb->tail, and skb->end pointers are removed, and
replaced with skb->head_room and skb->tail_room integers.

Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Jeff Garzik <jgarzik@pobox.com>
2005-06-28 15:25:31 -07:00
Herbert Xu
760f86d78d [PATCH] Fw: [Bugme-new] [Bug 4482] New: natsemi: incorrect initialization of IPv6 Neighbor-discovery multicast
On Wed, Apr 13, 2005 at 05:36:42PM +0000, Andrew Morton wrote:
>            Summary: natsemi: incorrect initialization of IPv6 Neighbor-
>                     discovery multicast

I've got a pair of FA312 cards and this problem has bothered me
for ages.  This has finally prompted me to do something about it :)

Turns out that somebody wasn't following the documentation.  We were
doing 16-bit writes to 32-bit registers which led to some addresses
working and others not so lucky.

This patch should fix the problem.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2005-05-15 18:18:56 -04:00
Linus Torvalds
1da177e4c3 Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!
2005-04-16 15:20:36 -07:00