This is a note to let you know that I've just added the patch titled
net: sfc: Correct key_len for efx_tc_ct_zone_ht_params
to the 6.6-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
net-sfc-correct-key_len-for-efx_tc_ct_zone_ht_params.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 2caf61fa7c544aebc024832eaf567f9ac100a1e9
Author: Liang Jie <liangjie@xxxxxxxxxxx>
Date: Mon Dec 30 17:37:09 2024 +0800
net: sfc: Correct key_len for efx_tc_ct_zone_ht_params
[ Upstream commit a8620de72e5676993ec3a3b975f7c10908f5f60f ]
In efx_tc_ct_zone_ht_params, the key_len was previously set to
offsetof(struct efx_tc_ct_zone, linkage). This calculation is incorrect
because it includes any padding between the zone field and the linkage
field due to structure alignment, which can vary between systems.
This patch updates key_len to use sizeof_field(struct efx_tc_ct_zone, zone)
, ensuring that the hash table correctly uses the zone as the key. This fix
prevents potential hash lookup errors and improves connection tracking
reliability.
Fixes: c3bb5c6acd4e ("sfc: functions to register for conntrack zone offload")
Signed-off-by: Liang Jie <liangjie@xxxxxxxxxxx>
Acked-by: Edward Cree <ecree.xilinx@xxxxxxxxx>
Link: https://patch.msgid.link/20241230093709.3226854-1-buaajxlj@xxxxxxx
Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/net/ethernet/sfc/tc_conntrack.c b/drivers/net/ethernet/sfc/tc_conntrack.c
index 44bb57670340..109d2aa34ae3 100644
--- a/drivers/net/ethernet/sfc/tc_conntrack.c
+++ b/drivers/net/ethernet/sfc/tc_conntrack.c
@@ -16,7 +16,7 @@ static int efx_tc_flow_block(enum tc_setup_type type, void *type_data,
void *cb_priv);
static const struct rhashtable_params efx_tc_ct_zone_ht_params = {
- .key_len = offsetof(struct efx_tc_ct_zone, linkage),
+ .key_len = sizeof_field(struct efx_tc_ct_zone, zone),
.key_offset = 0,
.head_offset = offsetof(struct efx_tc_ct_zone, linkage),
};
