qeth: enable scatter/gather in layer 2 mode

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The patch enables NETIF_F_SG flag for OSA in layer 2 mode.
It also adds performance accounting for fragmented sends,
adds a conditional skb_linearize() attempt if the skb had
too many fragments for QDIO SBAL, and fills netdevice->gso_*
attributes.

Signed-off-by: Eugene Crosser <Eugene.Crosser@ru.ibm.com>
Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com>
Reviewed-by: Lakhvich Dmitriy <ldmitriy@ru.ibm.com>
Reviewed-by: Thomas Richter <tmricht@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Eugene Crosser 2016-06-16 16:18:55 +02:00 • committed by David S. Miller

parent 8bad55f8ce

commit d52aec97e5

1 changed files with 25 additions and 1 deletions

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drivers/s390/net/qeth_l2_main.c

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