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linux/drivers/net/ethernet/intel/igbvf
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Jesse Brandeburg 32b3e08fff drivers/net/intel: use napi_complete_done() 
As per Eric Dumazet's previous patches:
(see commit (24d2e4a507) - tg3: use napi_complete_done())

Quoting verbatim:
Using napi_complete_done() instead of napi_complete() allows
us to use /sys/class/net/ethX/gro_flush_timeout

GRO layer can aggregate more packets if the flush is delayed a bit,
without having to set too big coalescing parameters that impact
latencies.
</end quote>

Tested
configuration: low latency via ethtool -C ethx adaptive-rx off
				rx-usecs 10 adaptive-tx off tx-usecs 15
workload: streaming rx using netperf TCP_MAERTS

igb:
MIGRATED TCP MAERTS TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 10.0.0.1 () port 0 AF_INET : demo
...
Interim result:  941.48 10^6bits/s over 1.000 seconds ending at 1440193171.589

Alignment      Offset         Bytes    Bytes       Recvs   Bytes    Sends
Local  Remote  Local  Remote  Xfered   Per                 Per
Recv   Send    Recv   Send             Recv (avg)          Send (avg)
    8       8      0       0 1176930056  1475.36    797726   16384.00  71905

MIGRATED TCP MAERTS TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 10.0.0.1 () port 0 AF_INET : demo
...
Interim result:  941.49 10^6bits/s over 0.997 seconds ending at 1440193142.763

Alignment      Offset         Bytes    Bytes       Recvs   Bytes    Sends
Local  Remote  Local  Remote  Xfered   Per                 Per
Recv   Send    Recv   Send             Recv (avg)          Send (avg)
    8       8      0       0 1175182320  50476.00     23282   16384.00  71816

i40e:
Hard to test because the traffic is incoming so fast (24Gb/s) that GRO
always receives 87kB, even at the highest interrupt rate.

Other drivers were only compile tested.

Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
 		2015-10-16 04:33:46 -07:00
..
Makefile igbvf: change copyright date 2012-02-03 03:07:15 -08:00
defines.h igbvf: Fix code comments and whitespace 2015-02-23 17:11:54 -08:00
ethtool.c drivers/net: get rid of unnecessary initializations in .get_drvinfo() 2015-10-16 00:24:10 -07:00
igbvf.h igbvf: Fix code comments and whitespace 2015-02-23 17:11:54 -08:00
mbx.c igbvf: Fix code comments and whitespace 2015-02-23 17:11:54 -08:00
mbx.h igbvf: Fix code comments and whitespace 2015-02-23 17:11:54 -08:00
netdev.c drivers/net/intel: use napi_complete_done() 2015-10-16 04:33:46 -07:00
regs.h igbvf: Fix code comments and whitespace 2015-02-23 17:11:54 -08:00
vf.c igbvf: Fix code comments and whitespace 2015-02-23 17:11:54 -08:00
vf.h igbvf: Fix code comments and whitespace 2015-02-23 17:11:54 -08:00