netfilter: xtables: change xt_target.checkentry return type

Restore function signatures from bool to int so that we can report
memory allocation failures or similar using -ENOMEM rather than
always having to pass -EINVAL back.

// <smpl>
@@
type bool;
identifier check, par;
@@
-bool check
+int check
 (struct xt_tgchk_param *par) { ... }
// </smpl>

Minus the change it does to xt_ct_find_proto.

Signed-off-by: Jan Engelhardt <jengelh@medozas.de>

12 files changed, 14 insertions, 14 deletions

diff --git a/net/netfilter/xt_CONNSECMARK.c b/net/netfilter/xt_CONNSECMARK.c
index 6812865488d..3f9d0f4f852 100644
--- a/net/netfilter/xt_CONNSECMARK.c
+++ b/net/netfilter/xt_CONNSECMARK.c
@@ -84,7 +84,7 @@ connsecmark_tg(struct sk_buff *skb, const struct xt_target_param *par)
 	return XT_CONTINUE;
 }
 
-static bool connsecmark_tg_check(const struct xt_tgchk_param *par)
+static int connsecmark_tg_check(const struct xt_tgchk_param *par)
 {
 	const struct xt_connsecmark_target_info *info = par->targinfo;
 
diff --git a/net/netfilter/xt_CT.c b/net/netfilter/xt_CT.c
index 6509e03f1e6..c1553bf06cf 100644
--- a/net/netfilter/xt_CT.c
+++ b/net/netfilter/xt_CT.c
@@ -53,7 +53,7 @@ static u8 xt_ct_find_proto(const struct xt_tgchk_param *par)
 		return 0;
 }
 
-static bool xt_ct_tg_check(const struct xt_tgchk_param *par)
+static int xt_ct_tg_check(const struct xt_tgchk_param *par)
 {
 	struct xt_ct_target_info *info = par->targinfo;
 	struct nf_conntrack_tuple t;
diff --git a/net/netfilter/xt_DSCP.c b/net/netfilter/xt_DSCP.c
index bbf08a91c60..1fa7b67bf22 100644
--- a/net/netfilter/xt_DSCP.c
+++ b/net/netfilter/xt_DSCP.c
@@ -60,7 +60,7 @@ dscp_tg6(struct sk_buff *skb, const struct xt_target_param *par)
 	return XT_CONTINUE;
 }
 
-static bool dscp_tg_check(const struct xt_tgchk_param *par)
+static int dscp_tg_check(const struct xt_tgchk_param *par)
 {
 	const struct xt_DSCP_info *info = par->targinfo;
 
diff --git a/net/netfilter/xt_HL.c b/net/netfilter/xt_HL.c
index 7004ed2ffa4..15ba1610818 100644
--- a/net/netfilter/xt_HL.c
+++ b/net/netfilter/xt_HL.c
@@ -101,7 +101,7 @@ hl_tg6(struct sk_buff *skb, const struct xt_target_param *par)
 	return XT_CONTINUE;
 }
 
-static bool ttl_tg_check(const struct xt_tgchk_param *par)
+static int ttl_tg_check(const struct xt_tgchk_param *par)
 {
 	const struct ipt_TTL_info *info = par->targinfo;
 
@@ -114,7 +114,7 @@ static bool ttl_tg_check(const struct xt_tgchk_param *par)
 	return true;
 }
 
-static bool hl_tg6_check(const struct xt_tgchk_param *par)
+static int hl_tg6_check(const struct xt_tgchk_param *par)
 {
 	const struct ip6t_HL_info *info = par->targinfo;
 
diff --git a/net/netfilter/xt_LED.c b/net/netfilter/xt_LED.c
index f511bea9464..1a3e3dd5a77 100644
--- a/net/netfilter/xt_LED.c
+++ b/net/netfilter/xt_LED.c
@@ -80,7 +80,7 @@ static void led_timeout_callback(unsigned long data)
 	led_trigger_event(&ledinternal->netfilter_led_trigger, LED_OFF);
 }
 
-static bool led_tg_check(const struct xt_tgchk_param *par)
+static int led_tg_check(const struct xt_tgchk_param *par)
 {
 	struct xt_led_info *ledinfo = par->targinfo;
 	struct xt_led_info_internal *ledinternal;
diff --git a/net/netfilter/xt_NFLOG.c b/net/netfilter/xt_NFLOG.c
index a57c5cf018e..13e6c0002c8 100644
--- a/net/netfilter/xt_NFLOG.c
+++ b/net/netfilter/xt_NFLOG.c
@@ -37,7 +37,7 @@ nflog_tg(struct sk_buff *skb, const struct xt_target_param *par)
 	return XT_CONTINUE;
 }
 
-static bool nflog_tg_check(const struct xt_tgchk_param *par)
+static int nflog_tg_check(const struct xt_tgchk_param *par)
 {
 	const struct xt_nflog_info *info = par->targinfo;
 
diff --git a/net/netfilter/xt_NFQUEUE.c b/net/netfilter/xt_NFQUEUE.c
index 7cc0de63aa0..d435579a64c 100644
--- a/net/netfilter/xt_NFQUEUE.c
+++ b/net/netfilter/xt_NFQUEUE.c
@@ -81,7 +81,7 @@ nfqueue_tg_v1(struct sk_buff *skb, const struct xt_target_param *par)
 	return NF_QUEUE_NR(queue);
 }
 
-static bool nfqueue_tg_v1_check(const struct xt_tgchk_param *par)
+static int nfqueue_tg_v1_check(const struct xt_tgchk_param *par)
 {
 	const struct xt_NFQ_info_v1 *info = par->targinfo;
 	u32 maxid;
diff --git a/net/netfilter/xt_RATEEST.c b/net/netfilter/xt_RATEEST.c
index 87ae97e5516..9743e50be8e 100644
--- a/net/netfilter/xt_RATEEST.c
+++ b/net/netfilter/xt_RATEEST.c
@@ -85,7 +85,7 @@ xt_rateest_tg(struct sk_buff *skb, const struct xt_target_param *par)
 	return XT_CONTINUE;
 }
 
-static bool xt_rateest_tg_checkentry(const struct xt_tgchk_param *par)
+static int xt_rateest_tg_checkentry(const struct xt_tgchk_param *par)
 {
 	struct xt_rateest_target_info *info = par->targinfo;
 	struct xt_rateest *est;
diff --git a/net/netfilter/xt_SECMARK.c b/net/netfilter/xt_SECMARK.c
index 4855fd9d7c6..48f8e4f7ea8 100644
--- a/net/netfilter/xt_SECMARK.c
+++ b/net/netfilter/xt_SECMARK.c
@@ -80,7 +80,7 @@ static bool checkentry_selinux(struct xt_secmark_target_info *info)
 	return true;
 }
 
-static bool secmark_tg_check(const struct xt_tgchk_param *par)
+static int secmark_tg_check(const struct xt_tgchk_param *par)
 {
 	struct xt_secmark_target_info *info = par->targinfo;
 
diff --git a/net/netfilter/xt_TCPMSS.c b/net/netfilter/xt_TCPMSS.c
index 45161d9a9f2..70288dc3158 100644
--- a/net/netfilter/xt_TCPMSS.c
+++ b/net/netfilter/xt_TCPMSS.c
@@ -234,7 +234,7 @@ static inline bool find_syn_match(const struct xt_entry_match *m)
 	return false;
 }
 
-static bool tcpmss_tg4_check(const struct xt_tgchk_param *par)
+static int tcpmss_tg4_check(const struct xt_tgchk_param *par)
 {
 	const struct xt_tcpmss_info *info = par->targinfo;
 	const struct ipt_entry *e = par->entryinfo;
@@ -256,7 +256,7 @@ static bool tcpmss_tg4_check(const struct xt_tgchk_param *par)
 }
 
 #if defined(CONFIG_IP6_NF_IPTABLES) || defined(CONFIG_IP6_NF_IPTABLES_MODULE)
-static bool tcpmss_tg6_check(const struct xt_tgchk_param *par)
+static int tcpmss_tg6_check(const struct xt_tgchk_param *par)
 {
 	const struct xt_tcpmss_info *info = par->targinfo;
 	const struct ip6t_entry *e = par->entryinfo;
diff --git a/net/netfilter/xt_TPROXY.c b/net/netfilter/xt_TPROXY.c
index e9244fdc123..189df9af4de 100644
--- a/net/netfilter/xt_TPROXY.c
+++ b/net/netfilter/xt_TPROXY.c
@@ -59,7 +59,7 @@ tproxy_tg(struct sk_buff *skb, const struct xt_target_param *par)
 	return NF_DROP;
 }
 
-static bool tproxy_tg_check(const struct xt_tgchk_param *par)
+static int tproxy_tg_check(const struct xt_tgchk_param *par)
 {
 	const struct ipt_ip *i = par->entryinfo;
 
diff --git a/net/netfilter/xt_connmark.c b/net/netfilter/xt_connmark.c
index df7eaff874f..0e69427f8cd 100644
--- a/net/netfilter/xt_connmark.c
+++ b/net/netfilter/xt_connmark.c
@@ -74,7 +74,7 @@ connmark_tg(struct sk_buff *skb, const struct xt_target_param *par)
 	return XT_CONTINUE;
 }
 
-static bool connmark_tg_check(const struct xt_tgchk_param *par)
+static int connmark_tg_check(const struct xt_tgchk_param *par)
 {
 	if (nf_ct_l3proto_try_module_get(par->family) < 0) {
 		pr_info("cannot load conntrack support for proto=%u\n",