mlx5: support napi_complete_done()

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A NAPI poll handler should return number of RX packets processed,
instead of 0 / budget.

This allows proper busy poll accounting through LINUX_MIB_BUSYPOLLRXPACKETS
SNMP counter.

napi_complete_done() allows /sys/class/net/ethX/gro_flush_timeout
to be used for finer GRO aggregation control.

Tested:

Enabled busy polling, and checked TcpExtBusyPollRxPackets counter is increasing.

echo 70 >/proc/sys/net/core/busy_read
nstat >/dev/null
netperf -H target -t TCP_RR >/dev/null
nstat | grep TcpExtBusyPollRxPackets
TcpExtBusyPollRxPackets         490958             0.0

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Eli Cohen <eli@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

...

This commit is contained in:

Eric Dumazet 2015-11-18 06:30:56 -08:00 • committed by David S. Miller

parent 7ae92ae588

commit 44fb6fbbac

3 changed files with 13 additions and 14 deletions

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2

drivers/net/ethernet/mellanox/mlx5/core/en.h

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14

drivers/net/ethernet/mellanox/mlx5/core/en_rx.c

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11

drivers/net/ethernet/mellanox/mlx5/core/en_txrx.c

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