litmus-rt-odroidx.git/drivers/net/e1000, branch odroidx

e1000: save skb counts in TX to avoid cache misses

2012-06-17T18:23:12+00:00

commit 31c15a2f24ebdab14333d9bf5df49757842ae2ec upstream.

Virtual Machines with emulated e1000 network adapter running on Parallels'
server were seeing kernel panics due to the e1000 driver dereferencing an
unexpected NULL pointer retrieved from buffer_info->skb.

The problem has been addressed for the e1000e driver, but not for the e1000.
Since the two drivers share similar code in the affected area, a port of the
following e1000e driver commit solves the issue for the e1000 driver:

commit 9ed318d546a29d7a591dbe648fd1a2efe3be1180
Author: Tom Herbert 
Date:   Wed May 5 14:02:27 2010 +0000

    e1000e: save skb counts in TX to avoid cache misses

    In e1000_tx_map, precompute number of segements and bytecounts which
    are derived from fields in skb; these are stored in buffer_info.  When
    cleaning tx in e1000_clean_tx_irq use the values in the associated
    buffer_info for statistics counting, this eliminates cache misses
    on skb fields.

Signed-off-by: Dean Nelson 
Acked-by: Jeff Kirsher 
Signed-off-by: David S. Miller 
Signed-off-by: Roman Kagan

e1000: Fix driver to be used on PA RISC C8000 workstations

2011-10-03T18:40:25+00:00

commit e2faeec2de9e2c73958e6ea6065dde1e8cd6f3a2 upstream.

The checksum field in the EEPROM on HPPA is really not a
checksum but a signature (0x16d6).  So allow 0x16d6 as the
matching checksum on HPPA systems.

This issue is present on longterm/stable kernels, I have
verified that this patch is applicable back to at least
2.6.32.y kernels.

v2- changed ifdef to use CONFIG_PARISC instead of __hppa__

CC: Guy Martin 
CC: Rolf Eike Beer 
CC: Matt Turner 
Reported-by: Mikulas Patocka 
Signed-off-by: Jeff Kirsher 
Acked-by: Jesse Brandeburg 
Signed-off-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman

Add appropriate include for prefetch users

2011-05-23T04:41:57+00:00

After discovering that wide use of prefetch on modern CPUs
could be a net loss instead of a win, net drivers which were
relying on the implicit inclusion of prefetch.h via the list
headers showed up in the resulting cleanup fallout.  Give
them an explicit include via the following $0.02 script.

 =========================================
 #!/bin/bash
 MANUAL=""
 for i in `git grep -l 'prefetch(.*)' .` ; do
 	grep -q '' $i
 	if [ $? = 0 ] ; then
 		continue
 	fi

 	(	echo '?^#include '
 		echo .
 		echo w
 		echo q
 	) | ed -s $i > /dev/null 2>&1
 	if [ $? != 0 ]; then
 		echo $i needs manual fixup
 		MANUAL="$i $MANUAL"
 	fi
 done
 echo ------------------- 8\<----------------------
 echo vi $MANUAL
 =========================================

Signed-off-by: Paul 
[ Fixed up some incorrect #include placements, and added some
  non-network drivers and the fib_trie.c case    - Linus ]
Signed-off-by: Linus Torvalds

e1000: convert to set_phys_id

2011-05-07T10:10:13+00:00

Based on the original patch from Stephen Hemminger.
Convert to new LED control infrastucture and remove no longer
necessary bits.

CC: Stephen Hemminger 
Tested-by: Jeff Pieper 
Signed-off-by: Jeff Kirsher

net/igb/e1000/e1000e: more robust ethtool duplex/speed configuration

2011-04-29T21:03:03+00:00

This makes sure that one cannot request a 99Mbps full-duplex and get a
100Mbps half-duplex configuration in return due to the way the
speed/duplex parameters are handled internally.

Tested: e1000 works
Signed-off-by: David Decotigny 
Signed-off-by: David S. Miller

ethtool: cosmetic: Use ethtool ethtool_cmd_speed API

2011-04-29T21:03:01+00:00

This updates the network drivers so that they don't access the
ethtool_cmd::speed field directly, but use ethtool_cmd_speed()
instead.

For most of the drivers, these changes are purely cosmetic and don't
fix any problem, such as for those 1GbE/10GbE drivers that indirectly
call their own ethtool get_settings()/mii_ethtool_gset(). The changes
are meant to enforce code consistency and provide robustness with
future larger throughputs, at the expense of a few CPU cycles for each
ethtool operation.

All drivers compiled with make allyesconfig ion x86_64 have been
updated.

Tested: make allyesconfig on x86_64 + e1000e/bnx2x work
Signed-off-by: David Decotigny 
Signed-off-by: David S. Miller

ethtool: Use full 32 bit speed range in ethtool's set_settings

2011-04-29T21:03:00+00:00

This makes sure the ethtool's set_settings() callback of network
drivers don't ignore the 16 most significant bits when ethtool calls
their set_settings().

All drivers compiled with make allyesconfig on x86_64 have been
updated.

Signed-off-by: David Decotigny 
Signed-off-by: David S. Miller

Fix common misspellings

2011-03-31T14:26:23+00:00

Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi

e1000: fix sparse warning

2011-03-02T11:20:56+00:00

Sparse complains because the e1000 driver is calling ioread on a pointer
not tagged as __iomem.

Signed-off-by: Stephen Hemminger 
Reviewed-by: Jesse Brandeburg 
Tested-by: Jeff Pieper 
Signed-off-by: Jeff Kirsher

e1000: add support for Marvell Alaska M88E1118R PHY

2011-02-08T09:17:30+00:00

This patch adds support for Marvell Alask M88E188R PHY chips. Support for
other M88* PHYs is already there, so there is nothing more to add than its
PHY id.

CC: Dirk Brandewie 
Signed-off-by: Florian Fainelli 
Acked-by: Jesse Brandeburg 
Signed-off-by: Jeff Kirsher