diff options
| author | wenxu <wenxu@ucloud.cn> | 2021-03-17 12:02:43 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-03-30 14:32:01 +0200 |
| commit | a96a8cb0500aab0fa7521c8677c7805cea477c50 (patch) | |
| tree | 3f682783ebbd3ce3017362a765ec4b50b5dde86a /net/sched | |
| parent | 6233c2d096338cd4b7ad97f1e2f84f97b06e15f0 (diff) | |
net/sched: cls_flower: fix only mask bit check in the validate_ct_state
[ Upstream commit afa536d8405a9ca36e45ba035554afbb8da27b82 ]
The ct_state validate should not only check the mask bit and also
check mask_bit & key_bit..
For the +new+est case example, The 'new' and 'est' bits should be
set in both state_mask and state flags. Or the -new-est case also
will be reject by kernel.
When Openvswitch with two flows
ct_state=+trk+new,action=commit,forward
ct_state=+trk+est,action=forward
A packet go through the kernel and the contrack state is invalid,
The ct_state will be +trk-inv. Upcall to the ovs-vswitchd, the
finally dp action will be drop with -new-est+trk.
Fixes: 1bcc51ac0731 ("net/sched: cls_flower: Reject invalid ct_state flags rules")
Fixes: 3aed8b63336c ("net/sched: cls_flower: validate ct_state for invalid and reply flags")
Signed-off-by: wenxu <wenxu@ucloud.cn>
Reviewed-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'net/sched')
| -rw-r--r-- | net/sched/cls_flower.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/sched/cls_flower.c b/net/sched/cls_flower.c index 46c1b3e9f66a..14316ba9b3b3 100644 --- a/net/sched/cls_flower.c +++ b/net/sched/cls_flower.c @@ -1432,7 +1432,7 @@ static int fl_set_key_ct(struct nlattr **tb, &mask->ct_state, TCA_FLOWER_KEY_CT_STATE_MASK, sizeof(key->ct_state)); - err = fl_validate_ct_state(mask->ct_state, + err = fl_validate_ct_state(key->ct_state & mask->ct_state, tb[TCA_FLOWER_KEY_CT_STATE_MASK], extack); if (err) |