linux-toradex.git/drivers/net/e1000, branch v2.6.20.17

[PATCH] e1000: disable polling before registering netdevice

2007-08-15T08:02:23+00:00

To assure the symmetry of poll enable/disable in up/down, we should
initialize the netdevice to be poll_disabled at load time. Doing
this after register_netdevice leaves us open to another race, so
lets move all the netif_* calls above register_netdevice so the
stack starts out how we expect it to be.

Signed-off-by: Auke Kok 
Cc: Herbert Xu 
Cc: Doug Chapman 
Signed-off-by: Jeff Garzik 
Signed-off-by: Chris Wright 
Signed-off-by: Greg Kroah-Hartman

Revert "[PATCH] e1000: disable TSO on the 82544 with slab debugging"

2007-01-08T03:57:38+00:00

This reverts commit 72f3ab7462f4e153d1e8ac78e379716ad71d6923, which was
superceded by commit 683a2aa339f607c8a422835161ceab68b2a5a18a
("e1000: Do not truncate TSO TCP header with 82544 workaround"), which
fixed the real problem.

Signed-off-by: Jeff Garzik

e1000: Do not truncate TSO TCP header with 82544 workaround

2006-12-26T21:28:20+00:00

The e1000 driver has a workaround for 82544 on PCI-X where if the
terminating byte of a buffer is at addresses 0-3 mod 8, then 4 bytes
are shaved off it and defered to a new segment.  This is due to an
erratum that could otherwise cause TX hangs.

Unfortunately this breaks TSO because it may cause the TCP header to
be split over two segments which itself causes TX hangs.  The solution
is to pull 4 bytes of data up from the next segment rather than pushing
4 bytes off.  This ensures the TCP header remains in one piece and
works around the PCI-X hang.

This patch is based on one from Jesse Brandeburg.

This bug has been trigered by both CONFIG_DEBUG_SLAB as well as Xen.

Note that the only reason we don't see this normally is because the
TCP stack starts writing from the end, i.e., it writes the TCP header
first then slaps on the IP header, etc.  So the end of the TCP header
(skb->tail - 1 here) is always aligned correctly.

Had we made the start of the IP header (e.g., IPv6) 8-byte aligned
instead, this would happen for normal TCP traffic as well.

Signed-off-by: Herbert Xu 
Acked-by: Jesse Brandeburg 
--
Visit Openswan at http://www.openswan.org/
Email: Herbert Xu ~{PmV>HI~} 
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
--
Signed-off-by: Jeff Garzik

[PATCH] e1000: No-delay link detection at interface up

2006-12-26T20:51:30+00:00

Currently after an interface up, the link state is detected 2 seconds later
when the first watchdog timer runs. This patch changes that by triggering
the hardware to generate a link-change interrupt from the up() function
instead. This has the result that the link state gets detected immediately
and without races. This has the potential to speed up booting since a normal
distribution boot process waits for a link before DHCP is attempted.

Signed-off-by: Jesse Brandeburg 
Signed-off-by: Auke Kok 
Signed-off-by: Arjan van de Ven 
Signed-off-by: Jeff Garzik

e1000: 3 new driver stats for managability testing

2006-12-26T20:51:30+00:00

Add 3 extra packet redirect counters for tracking purposes to make sure
we can test that all packets arrive properly.

Originally from Jesse Brandeburg ,
rewritten to use feature flags by me.

Signed-off-by: Jeff Garzik

[PATCH] e1000: Make the copybreak value a module parameter

2006-12-26T20:51:30+00:00

Allow the user to vary the size that copybreak works. Currently cb is enabled
for packets < 256 bytes, but various tests indicate that this should be
configurable for specific use cases. In addition, this parameter allows us
to force never/always during testing to get full and predictable coverage of
both code paths.

Signed-off-by: Jesse Brandeburg 
Signed-off-by: Auke Kok 
Signed-off-by: Arjan van de Ven 
Signed-off-by: Jeff Garzik

[PATCH] e1000: Fix PBA allocation calculations

2006-12-26T20:51:30+00:00

Assign the PBA to be large enough to contain at least 2 jumbo frames on
all adapters. This dramatically increases performance on several adapters
and fixes TX performance degradation issues where the PBA was misallocated
in the old algorithm.

Signed-off-by: Bruce Allan 
Signed-off-by: Auke Kok 
Signed-off-by: Arjan van de Ven 
Signed-off-by: Jeff Garzik

[PATCH] e1000: narrow down the scope of the tipg timer tweak

2006-12-26T20:51:30+00:00

the driver has (ancient) code for messing with TIPG from the 82542 days.
Unfortunately this code was running on our current adapters and setting
TIPG for fiber to be +1 over the copper value.  This caused 1.45Mpps
to be sent instead of 1.487Mpps.

Signed-off-by: Jesse Brandeburg 
Signed-off-by: Auke Kok 
Signed-off-by: Arjan van de Ven 
Signed-off-by: Jeff Garzik

[PATCH] e1000: fix ethtool reported bus type for older adapters

2006-12-26T20:51:30+00:00

For older adapters we know that they are of the PCI bus type, so we can
just set this.

Signed-off-by: Jeff Kirsher 
Signed-off-by: Auke Kok 
Signed-off-by: Arjan van de Ven 
Signed-off-by: Jeff Garzik

[PATCH] e1000: fix to set the new max frame size before resetting the adapter

2006-12-26T20:51:30+00:00

This bugfix makes sure that the driver data reflects the full new situation
before the adapter is reinitialized.

Signed-off-by: Bruce Allan 
Signed-off-by: Auke Kok 
Signed-off-by: Arjan van de Ven 
Signed-off-by: Jeff Garzik