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| Started by | Kamal Mostafa <kamal@canonical.com> |
|---|---|
| First post | 2015-12-02 19:10 +0100 |
| Last post | 2015-12-02 19:10 +0100 |
| Articles | 1 — 1 participant |
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[PATCH 3.19.y-ckt 009/164] macvtap: unbreak receiving of gro skb with frag list Kamal Mostafa <kamal@canonical.com> - 2015-12-02 19:10 +0100
| From | Kamal Mostafa <kamal@canonical.com> |
|---|---|
| Date | 2015-12-02 19:10 +0100 |
| Subject | [PATCH 3.19.y-ckt 009/164] macvtap: unbreak receiving of gro skb with frag list |
| Message-ID | <qBk0P-2jf-3@gated-at.bofh.it> |
3.19.8-ckt11 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Jason Wang <jasowang@redhat.com>
[ 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: Kamal Mostafa <kamal@canonical.com>
---
drivers/net/macvtap.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/macvtap.c b/drivers/net/macvtap.c
index 84e835e..73437568 100644
--- a/drivers/net/macvtap.c
+++ b/drivers/net/macvtap.c
@@ -82,7 +82,7 @@ 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)
static struct macvlan_dev *macvtap_get_vlan_rcu(const struct net_device *dev)
{
--
1.9.1
--
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