Daniel Borkmann 8e2f1a63f2 packet: fix packet_direct_xmit for BQL enabled drivers ...

Currently, in packet_direct_xmit() we test the assigned netdevice queue
for netif_xmit_frozen_or_stopped() before doing an ndo_start_xmit().

This can have the side-effect that BQL enabled drivers which make use
of netdev_tx_sent_queue() internally, set __QUEUE_STATE_STACK_XOFF from
within the stack and would not fully fill the device's TX ring from
packet sockets with PACKET_QDISC_BYPASS enabled.

Instead, use a test without BQL bit so that bursts can be absorbed
into the NICs TX ring. Fix and code suggested by Eric Dumazet, thanks!

Signed-off-by: Eric Dumazet <[email protected]>
Signed-off-by: Daniel Borkmann <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

2014-04-03 14:29:12 -04:00

..

af_packet.c

packet: fix packet_direct_xmit for BQL enabled drivers

2014-04-03 14:29:12 -04:00

diag.c

packet: use percpu mmap tx frame pending refcount

2014-01-16 16:17:12 -08:00

internal.h

packet: use percpu mmap tx frame pending refcount

2014-01-16 16:17:12 -08:00

Kconfig

packet: Diag core and basic socket info dumping

2012-08-14 16:56:33 -07:00

Makefile

packet: Diag core and basic socket info dumping

2012-08-14 16:56:33 -07:00