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Commit cb160394 authored by Davide Caratti's avatar Davide Caratti Committed by David S. Miller
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vrf: add CRC32c offload to device features 

SCTP sockets originated in a VRF can improve their performance if CRC32c
computation is delegated to underlying devices: update device features,
setting NETIF_F_SCTP_CRC. Iterating the following command in the topology
proposed with [1],

 # ip vrf exec vrf-h2 netperf -H 192.0.2.1 -t SCTP_STREAM -- -m 10K

the measured throughput in Mbit/s improved from 2395 ± 1% to 2720 ± 1%.

[1] https://www.spinics.net/lists/netdev/msg486007.html



Signed-off-by: default avatarDavide Caratti <dcaratti@redhat.com>
Reviewed-by: default avatarMarcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Acked-by: default avatarDavid Ahern <dsa@cumulusnetworks.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 29555fa3

drivers/net/vrf.c

+1 −1
Original line number Diff line number Diff line
@@ -1254,7 +1254,7 @@ static void vrf_setup(struct net_device *dev) 


	/* enable offload features */

	dev->features   |= NETIF_F_GSO_SOFTWARE;

	dev->features   |= NETIF_F_RXCSUM | NETIF_F_HW_CSUM;

	dev->features   |= NETIF_F_RXCSUM | NETIF_F_HW_CSUM | NETIF_F_SCTP_CRC;

	dev->features   |= NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_HIGHDMA;



	dev->hw_features = dev->features;