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| author | Jason Wang <jasowang@redhat.com> | 2015-10-23 00:57:05 -0400 |
|---|---|---|
| committer | Jiri Slaby <jslaby@suse.cz> | 2015-11-14 16:48:25 +0100 |
| commit | 2d2d5e7745361bf7d106abd3e990579f4956ba11 (patch) | |
| tree | 22cf94d4fcb8199164af120eaf5c0337a3575b90 /drivers/net | |
| parent | c75f0a0bfdec01eac652ad6a9eaa14e7ea5d85cb (diff) | |
| download | lwn-2d2d5e7745361bf7d106abd3e990579f4956ba11.tar.gz lwn-2d2d5e7745361bf7d106abd3e990579f4956ba11.zip | |
macvtap: unbreak receiving of gro skb with frag list
[ Upstream commit f23d538bc24a83c16127c2eb82c9cf1adc2b5149 ]
We don't have fraglist support in TAP_FEATURES. This will lead
software segmentation of gro skb with frag list. Fixes by having
frag list support in TAP_FEATURES.
With this patch single session of netperf receiving were restored from
about 5Gb/s to about 12Gb/s on mlx4.
Fixes a567dd6252 ("macvtap: simplify usage of tap_features")
Cc: Vlad Yasevich <vyasevic@redhat.com>
Cc: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/macvtap.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/macvtap.c b/drivers/net/macvtap.c index 393873fb792e..ee53a9d06e8e 100644 --- a/drivers/net/macvtap.c +++ b/drivers/net/macvtap.c @@ -69,7 +69,7 @@ static const struct proto_ops macvtap_socket_ops; #define TUN_OFFLOADS (NETIF_F_HW_CSUM | NETIF_F_TSO_ECN | NETIF_F_TSO | \ NETIF_F_TSO6 | NETIF_F_UFO) #define RX_OFFLOADS (NETIF_F_GRO | NETIF_F_LRO) -#define TAP_FEATURES (NETIF_F_GSO | NETIF_F_SG) +#define TAP_FEATURES (NETIF_F_GSO | NETIF_F_SG | NETIF_F_FRAGLIST) /* * RCU usage: |