6.5-stable review patch. If anyone has any objections, please let me know.
------------------
From: Toke Høiland-Jørgensen <toke@xxxxxxxxxx>
[ Upstream commit 7a6102aa6df0d5d032b4cbc51935d1d4cda17254 ]
There's an early return in veth_set_features() if the device is in a down
state, which leads to the XDP feature flags not being updated when enabling
GRO while the device is down. Which in turn leads to XDP_REDIRECT not
working, because the redirect code now checks the flags.
Fix this by updating the feature flags after bringing the device up.
Before this patch:
NETDEV_XDP_ACT_BASIC: yes
NETDEV_XDP_ACT_REDIRECT: yes
NETDEV_XDP_ACT_NDO_XMIT: no
NETDEV_XDP_ACT_XSK_ZEROCOPY: no
NETDEV_XDP_ACT_HW_OFFLOAD: no
NETDEV_XDP_ACT_RX_SG: yes
NETDEV_XDP_ACT_NDO_XMIT_SG: no
After this patch:
NETDEV_XDP_ACT_BASIC: yes
NETDEV_XDP_ACT_REDIRECT: yes
NETDEV_XDP_ACT_NDO_XMIT: yes
NETDEV_XDP_ACT_XSK_ZEROCOPY: no
NETDEV_XDP_ACT_HW_OFFLOAD: no
NETDEV_XDP_ACT_RX_SG: yes
NETDEV_XDP_ACT_NDO_XMIT_SG: yes
Fixes: fccca038f300 ("veth: take into account device reconfiguration for xdp_features flag")
Fixes: 66c0e13ad236 ("drivers: net: turn on XDP features")
Signed-off-by: Toke Høiland-Jørgensen <toke@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20230911135826.722295-1-toke@xxxxxxxxxx
Signed-off-by: Paolo Abeni <pabeni@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/net/veth.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/net/veth.c b/drivers/net/veth.c
index 2db678c0082a3..fc0d0114d8c27 100644
--- a/drivers/net/veth.c
+++ b/drivers/net/veth.c
@@ -1447,6 +1447,8 @@ static int veth_open(struct net_device *dev)
netif_carrier_on(peer);
}
+ veth_set_xdp_features(dev);
+
return 0;
}
--
2.40.1
