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[net-next,2/2] netfilter: nf_ct_expect: Change __nf_ct_expect_check() return value.

Message ID 1487719522-42844-2-git-send-email-jarno@ovn.org
State Awaiting Upstream, archived
Delegated to: David Miller
Headers show

Commit Message

Jarno Rajahalme Feb. 21, 2017, 11:25 p.m. UTC
Commit 4dee62b1 ("netfilter: nf_ct_expect: nf_ct_expect_insert()
returns void") inadvertently changed the successful return value of
nf_ct_expect_related_report() from 0 to 1 due to
__nf_ct_expect_check() returning 1 on success.  Prevent this
regression in the future by changing the return value of
__nf_ct_expect_check() to 0 on success.

Signed-off-by: Jarno Rajahalme <jarno@ovn.org>
---
 net/netfilter/nf_conntrack_expect.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Comments

Joe Stringer Feb. 21, 2017, 11:45 p.m. UTC | #1
On 21 February 2017 at 15:25, Jarno Rajahalme <jarno@ovn.org> wrote:
> Commit 4dee62b1 ("netfilter: nf_ct_expect: nf_ct_expect_insert()
> returns void") inadvertently changed the successful return value of
> nf_ct_expect_related_report() from 0 to 1 due to
> __nf_ct_expect_check() returning 1 on success.  Prevent this
> regression in the future by changing the return value of
> __nf_ct_expect_check() to 0 on success.
>
> Signed-off-by: Jarno Rajahalme <jarno@ovn.org>
> ---

It seems like other functions in this file return 0 as successful
condition, so from that perspective this seems more in line with
existing code.

Acked-by: Joe Stringer <joe@ovn.org>
Pablo Neira Ayuso Feb. 22, 2017, 9:47 a.m. UTC | #2
On Tue, Feb 21, 2017 at 03:25:22PM -0800, Jarno Rajahalme wrote:
> Commit 4dee62b1 ("netfilter: nf_ct_expect: nf_ct_expect_insert()
> returns void") inadvertently changed the successful return value of
> nf_ct_expect_related_report() from 0 to 1 due to
> __nf_ct_expect_check() returning 1 on success.  Prevent this
> regression in the future by changing the return value of
> __nf_ct_expect_check() to 0 on success.

Same thing, please Cc netfilter-devel. Thanks.
diff mbox

Patch

diff --git a/net/netfilter/nf_conntrack_expect.c b/net/netfilter/nf_conntrack_expect.c
index d6ace69..4b2e1fb 100644
--- a/net/netfilter/nf_conntrack_expect.c
+++ b/net/netfilter/nf_conntrack_expect.c
@@ -410,7 +410,7 @@  static inline int __nf_ct_expect_check(struct nf_conntrack_expect *expect)
 	struct net *net = nf_ct_exp_net(expect);
 	struct hlist_node *next;
 	unsigned int h;
-	int ret = 1;
+	int ret = 0;
 
 	if (!master_help) {
 		ret = -ESHUTDOWN;
@@ -460,7 +460,7 @@  int nf_ct_expect_related_report(struct nf_conntrack_expect *expect,
 
 	spin_lock_bh(&nf_conntrack_expect_lock);
 	ret = __nf_ct_expect_check(expect);
-	if (ret <= 0)
+	if (ret < 0)
 		goto out;
 
 	nf_ct_expect_insert(expect);