tg3: Work around HW/FW limitations with vlan encapsulated frames

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[ Upstream commit 476c18850c ]

TG3 appears to have an issue performing TSO and checksum offloading
correclty when the frame has been vlan encapsulated (non-accelrated).
In these cases, tcp checksum is not correctly updated.

This patch attempts to work around this issue.  After the patch,
802.1ad vlans start working correctly over tg3 devices.

CC: Prashant Sreedharan <prashant@broadcom.com>
CC: Michael Chan <mchan@broadcom.com>
Signed-off-by: Vladislav Yasevich <vyasevic@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

This commit is contained in:

Vlad Yasevich 2014-09-18 10:31:17 -04:00 • committed by Greg Kroah-Hartman

parent 72c01e6fcc

commit f28909e6d5

1 changed files with 18 additions and 2 deletions

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drivers/net/ethernet/broadcom/tg3.c

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