linux-stable.git/drivers/net/igb, branch linux-2.6.33.y

igb: Fix lack of flush after register write and before delay

2011-08-29T21:33:04+00:00

commit 064b43304ed8ede8e13ff7b4338d09fd37bcffb1 upstream.

Register writes followed by a delay are required to have a flush
before the delay in order to commit the values to the register.  Without
the flush, the code following the delay may not function correctly.

Reported-by: Tong Ho 
Reported-by: Guenter Roeck 
Signed-off-by: Carolyn Wyborny 
Tested-by:  Aaron Brown 
Signed-off-by: Jeff Kirsher 
Signed-off-by: Greg Kroah-Hartman

igb: only use vlan_gro_receive if vlans are registered

2011-03-21T19:44:29+00:00

commit 31b24b955c3ebbb6f3008a6374e61cf7c05a193c upstream.

This change makes it so that vlan_gro_receive is only used if vlans have been
registered to the adapter structure.  Previously we were just sending all vlan
tagged frames in via this function but this results in a null pointer
dereference when vlans are not registered.

[ This fixes bugzilla entry 15582 -Eric Dumazet]

Signed-off-by: Alexander Duyck 
Signed-off-by: Jeff Kirsher 
Acked-by: Eric Dumazet 
Signed-off-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman

igb: make certain to reassign legacy interrupt vectors after reset

2010-02-04T17:49:31+00:00

This change corrects an issue that will cause false hangs when using either
82575 or 82580 in legacy interrupt mode.  The issue is caused when there is
a slow traffic flow and an "ethtool -r" is executed while using legacy or
MSI interrupts.  MSI-X is not affected by this issue due to the fact that
we were already reconfiguring the vectors after reset.

If possible it would be best to push this for net-2.6 since it is resolving
a bug but if that is not possible then net-next-2.6 will be fine.

Signed-off-by: Alexander Duyck 
Signed-off-by: Jeff Kirsher 
Signed-off-by: David S. Miller

net: Fix IPv6 GSO type checks in Intel ethernet drivers

2010-01-23T10:02:21+00:00

Found this problem when testing IPv6 from a KVM guest to a remote
host via e1000e device on the host.
The following patch fixes the check for IPv6 GSO packet in Intel
ethernet drivers to use skb_is_gso_v6(). SKB_GSO_DODGY is also set
when packets are forwarded from a guest.

Signed-off-by: Sridhar Samudrala 
Signed-off-by: Jeff Kirsher 
Signed-off-by: David S. Miller

igb/igbvf: cleanup exception handling in tx_map_adv

2010-01-23T09:35:00+00:00

After removing the skb_dma_map/unmap calls the exception handling in
igb_tx_map_adv is not correct.  The issue is that the count value was not
being correctly handled so as a result we were not rewinding the ring as
back as we should have been.

Signed-off-by: Alexander Duyck 
Signed-off-by: Jeff Kirsher 
Signed-off-by: David S. Miller

igb: check both function bits in status register in wol exception

2009-12-24T04:47:51+00:00

The ethtool code for enabling Wake on Lan was not correctly checking the
status register bits so as a result ports 0 and 2 were both being allowed
to set WOL to enabled even though it is only supported on the first port
for our adapters.

Signed-off-by: Alexander Duyck 
Signed-off-by: Jeff Kirsher 
Signed-off-by: David S. Miller

igb: correctly offset 82575 flow control watermarks by 16 bytes

2009-12-24T04:47:50+00:00

The watermark values for the 82575 were not being set correctly.  As a
result the high and low watermark values were set to the same value which
can lead to excess xon/xoff packets being generated.

Signed-off-by: Alexander Duyck 
Signed-off-by: Jeff Kirsher 
Signed-off-by: David S. Miller

igb: do not force retry count to 1 on 82580 phy

2009-12-24T04:47:50+00:00

This change resolves an issue seen in some configurations where the link
may drop to 100Mb/s even though the link itself supports 1000Mb/s.  The
issue was root caused to the fact that we were only trying the link once.
Now instead we will try up to 5 attempts on a faulty cable before
downshifting to 100Mb/s.

Signed-off-by: Alexander Duyck 
Signed-off-by: Jeff Kirsher 
Signed-off-by: David S. Miller

igb: do not force pcs link when in KX mode

2009-12-24T04:47:49+00:00

We were forcing the PCS link up in error when we are in KX mode.  We should
only be disabling autoneg, not forcing the link up.

Signed-off-by: Alexander Duyck 
Signed-off-by: Jeff Kirsher 
Signed-off-by: David S. Miller

igb: fix handling of mailbox collisions between PF/VF

2009-12-12T06:57:34+00:00

This patch changes the handling of collisions between the use of the
PF/VF sides of the mailbox.

Signed-off-by: Alexander Duyck 
Signed-off-by: Jeff Kirsher 
Signed-off-by: David S. Miller