From: Davide Caratti Date: Thu, 24 May 2018 15:49:35 +0000 (+0200) Subject: vrf: add CRC32c offload to device features X-Git-Tag: v4.19~872^2~128 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=cb1603948a0b80f27d2525bb7ac0d4bbb3849926;p=platform%2Fkernel%2Flinux-rpi3.git 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: Davide Caratti Reviewed-by: Marcelo Ricardo Leitner Acked-by: David Ahern Signed-off-by: David S. Miller --- diff --git a/drivers/net/vrf.c b/drivers/net/vrf.c index 90b5f39..f93547f 100644 --- a/drivers/net/vrf.c +++ b/drivers/net/vrf.c @@ -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;