[PATCH] netfilter: connlimit: fix boolreturn.cocci warnings

[PATCH] netfilter: connlimit: fix boolreturn.cocci warnings

[kbuild test robot]

From: Fengguang Wu <fengguang.wu@intel.com>

net/netfilter/nf_conncount.c:74:9-10: WARNING: return of 0/1 in function 'already_closed' with return type bool

 Return statements in functions returning bool should use
 true/false instead of 1/0.
Generated by: scripts/coccinelle/misc/boolreturn.cocci

Fixes: 61b781a5a0bb ("netfilter: connlimit: split xt_connlimit into front and backend")
CC: Florian Westphal <fw@strlen.de>
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
---

 nf_conncount.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/net/netfilter/nf_conncount.c
+++ b/net/netfilter/nf_conncount.c
@@ -71,7 +71,7 @@ static inline bool already_closed(const
 		return conn->proto.tcp.state == TCP_CONNTRACK_TIME_WAIT ||
 		       conn->proto.tcp.state == TCP_CONNTRACK_CLOSE;
 	else
-		return 0;
+		return false;
 }
 
 static int key_diff(const u32 *a, const u32 *b, unsigned int klen)

[PATCH] netfilter: connlimit: fix ptr_ret.cocci warnings

[kbuild test robot]

From: Fengguang Wu <fengguang.wu@intel.com>

net/netfilter/xt_connlimit.c:96:1-3: WARNING: PTR_ERR_OR_ZERO can be used


 Use PTR_ERR_OR_ZERO rather than if(IS_ERR(...)) + PTR_ERR

Generated by: scripts/coccinelle/api/ptr_ret.cocci

Fixes: 61b781a5a0bb ("netfilter: connlimit: split xt_connlimit into front and backend")
CC: Florian Westphal <fw@strlen.de>
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
---

 xt_connlimit.c |    5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

--- a/net/netfilter/xt_connlimit.c
+++ b/net/netfilter/xt_connlimit.c
@@ -93,10 +93,7 @@ static int connlimit_mt_check(const stru
 
 	/* init private data */
 	info->data = nf_conncount_init(par->net, par->family, keylen);
-	if (IS_ERR(info->data))
-		return PTR_ERR(info->data);
-
-	return 0;
+	return PTR_ERR_OR_ZERO(info->data);
 }
 
 static void connlimit_mt_destroy(const struct xt_mtdtor_param *par)

[nf-next:for-net-next3 32/40] net/netfilter/nf_conncount.c:74:9-10: WARNING: return of 0/1 in function 'already_closed' with return type bool

[kbuild test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next.git for-net-next3
head:   dfbb1c16489ca1b93e3f8aebc74d9229f1d87cc6
commit: 61b781a5a0bb7fcbbb3be316271fccf59915e3b0 [32/40] netfilter: connlimit: split xt_connlimit into front and backend


coccinelle warnings: (new ones prefixed by >>)

>> net/netfilter/nf_conncount.c:74:9-10: WARNING: return of 0/1 in function 'already_closed' with return type bool
--
>> net/netfilter/xt_connlimit.c:96:1-3: WARNING: PTR_ERR_OR_ZERO can be used

Please review and possibly fold the followup patch.

---
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