net: ipv6/gre: Add GRO support

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Add GRO capability for IPv6 GRE tunnel and ip6erspan tap, via gro_cells
infrastructure.

Performance testing: 55% higher badwidth.
Measuring bandwidth of 1 thread IPv4 TCP traffic over IPv6 GRE tunnel
while GRO on the physical interface is disabled.
CPU: Intel Xeon E312xx (Sandy Bridge)
NIC: Mellanox Technologies MT27700 Family [ConnectX-4]
Before (GRO not working in tunnel) : 2.47 Gbits/sec
After  (GRO working in tunnel)     : 3.85 Gbits/sec

Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com>
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
CC: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

...

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Eran Ben Elisha 2018-05-07 10:45:27 +03:00 • committed by David S. Miller

parent 6f2f8212bf

commit 0c1dd2a162

1 changed files with 27 additions and 10 deletions

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net/ipv6/ip6_gre.c

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