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| author | Daniel Borkmann <dborkman@redhat.com> | 2014-02-22 17:01:53 +0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-02-25 04:00:08 +0400 |
| commit | b17c706987fa6f28bdc1771c8266e7a69e22adcb (patch) | |
| tree | a62fffc21d41ddc8d6bbc1094d992d28ffc80357 /drivers/net/loopback.c | |
| parent | 72f8e06f3ea022d9002b825d57b9d897b9dbe6be (diff) | |
| download | linux-b17c706987fa6f28bdc1771c8266e7a69e22adcb.tar.xz | |
loopback: sctp: add NETIF_F_SCTP_CSUM to device features
Drivers are allowed to set NETIF_F_SCTP_CSUM if they have
hardware crc32c checksumming support for the SCTP protocol.
Currently, NETIF_F_SCTP_CSUM flag is available in igb,
ixgbe, i40e/i40evf drivers and for vlan devices.
If we don't have NETIF_F_SCTP_CSUM then crc32c is done
through CPU instructions, invoked from crypto layer, or
if not available as slow-path fallback in software.
Currently, loopback device propagates checksum offloading
feature flags in dev->features, but is missing SCTP checksum
offloading. Therefore, account for NETIF_F_SCTP_CSUM as
well.
Before patch:
./netperf_sctp -H 192.168.0.100 -t SCTP_STREAM_MANY
SCTP 1-TO-MANY STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 192.168.0.100 () port 0 AF_INET
Recv Send Send
Socket Socket Message Elapsed
Size Size Size Time Throughput
bytes bytes bytes secs. 10^6bits/sec
4194304 4194304 4096 10.00 4683.50
After patch:
./netperf_sctp -H 192.168.0.100 -t SCTP_STREAM_MANY
SCTP 1-TO-MANY STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 192.168.0.100 () port 0 AF_INET
Recv Send Send
Socket Socket Message Elapsed
Size Size Size Time Throughput
bytes bytes bytes secs. 10^6bits/sec
4194304 4194304 4096 10.00 15348.26
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/loopback.c')
| -rw-r--r-- | drivers/net/loopback.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/net/loopback.c b/drivers/net/loopback.c index 771c9bfa7d31..282effee7e1c 100644 --- a/drivers/net/loopback.c +++ b/drivers/net/loopback.c @@ -176,6 +176,7 @@ static void loopback_setup(struct net_device *dev) | NETIF_F_UFO | NETIF_F_HW_CSUM | NETIF_F_RXCSUM + | NETIF_F_SCTP_CSUM | NETIF_F_HIGHDMA | NETIF_F_LLTX | NETIF_F_NETNS_LOCAL |