This is a note to let you know that I've just added the patch titled
i40e: fix i40e_count_filters() to count only active/new filters
to the 5.15-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:
i40e-fix-i40e_count_filters-to-count-only-active-new-filters.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From eb58c598ce45b7e787568fe27016260417c3d807 Mon Sep 17 00:00:00 2001
From: Aleksandr Loktionov <aleksandr.loktionov@xxxxxxxxx>
Date: Wed, 13 Mar 2024 10:44:00 +0100
Subject: i40e: fix i40e_count_filters() to count only active/new filters
From: Aleksandr Loktionov <aleksandr.loktionov@xxxxxxxxx>
commit eb58c598ce45b7e787568fe27016260417c3d807 upstream.
The bug usually affects untrusted VFs, because they are limited to 18 MACs,
it affects them badly, not letting to create MAC all filters.
Not stable to reproduce, it happens when VF user creates MAC filters
when other MACVLAN operations are happened in parallel.
But consequence is that VF can't receive desired traffic.
Fix counter to be bumped only for new or active filters.
Fixes: 621650cabee5 ("i40e: Refactoring VF MAC filters counting to make more reliable")
Signed-off-by: Aleksandr Loktionov <aleksandr.loktionov@xxxxxxxxx>
Reviewed-by: Arkadiusz Kubalewski <arkadiusz.kubalewski@xxxxxxxxx>
Reviewed-by: Paul Menzel <pmenzel@xxxxxxxxxxxxx>
Tested-by: Rafal Romanowski <rafal.romanowski@xxxxxxxxx>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/net/ethernet/intel/i40e/i40e_main.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
--- a/drivers/net/ethernet/intel/i40e/i40e_main.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_main.c
@@ -1231,8 +1231,11 @@ int i40e_count_filters(struct i40e_vsi *
int bkt;
int cnt = 0;
- hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist)
- ++cnt;
+ hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
+ if (f->state == I40E_FILTER_NEW ||
+ f->state == I40E_FILTER_ACTIVE)
+ ++cnt;
+ }
return cnt;
}
Patches currently in stable-queue which might be from aleksandr.loktionov@xxxxxxxxx are
queue-5.15/i40e-fix-vf-may-be-used-uninitialized-in-this-function-warning.patch
queue-5.15/i40e-fix-i40e_count_filters-to-count-only-active-new-filters.patch
