netfilter: xtables: change targets to return error code

Part of the transition of done by this semantic patch:
// <smpl>
@ rule1 @
struct xt_target ops;
identifier check;
@@
 ops.checkentry = check;

@@
identifier rule1.check;
@@
 check(...) { <...
-return true;
+return 0;
 ...> }

@@
identifier rule1.check;
@@
 check(...) { <...
-return false;
+return -EINVAL;
 ...> }
// </smpl>

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

1 files changed, 8 insertions, 8 deletions

diff --git a/net/ipv4/netfilter/ipt_CLUSTERIP.c b/net/ipv4/netfilter/ipt_CLUSTERIP.c
index 290a7b9b393e..1302de2ae0ae 100644
--- a/net/ipv4/netfilter/ipt_CLUSTERIP.c
+++ b/net/ipv4/netfilter/ipt_CLUSTERIP.c
@@ -358,13 +358,13 @@ static int clusterip_tg_check(const struct xt_tgchk_param *par)
 	    cipinfo->hash_mode != CLUSTERIP_HASHMODE_SIP_SPT &&
 	    cipinfo->hash_mode != CLUSTERIP_HASHMODE_SIP_SPT_DPT) {
 		pr_info("unknown mode %u\n", cipinfo->hash_mode);
-		return false;
+		return -EINVAL;
 
 	}
 	if (e->ip.dmsk.s_addr != htonl(0xffffffff) ||
 	    e->ip.dst.s_addr == 0) {
 		pr_info("Please specify destination IP\n");
-		return false;
+		return -EINVAL;
 	}
 
 	/* FIXME: further sanity checks */
@@ -374,20 +374,20 @@ static int clusterip_tg_check(const struct xt_tgchk_param *par)
 		if (!(cipinfo->flags & CLUSTERIP_FLAG_NEW)) {
 			pr_info("no config found for %pI4, need 'new'\n",
 				&e->ip.dst.s_addr);
-			return false;
+			return -EINVAL;
 		} else {
 			struct net_device *dev;
 
 			if (e->ip.iniface[0] == '\0') {
 				pr_info("Please specify an interface name\n");
-				return false;
+				return -EINVAL;
 			}
 
 			dev = dev_get_by_name(&init_net, e->ip.iniface);
 			if (!dev) {
 				pr_info("no such interface %s\n",
 					e->ip.iniface);
-				return false;
+				return -EINVAL;
 			}
 
 			config = clusterip_config_init(cipinfo,
@@ -395,7 +395,7 @@ static int clusterip_tg_check(const struct xt_tgchk_param *par)
 			if (!config) {
 				pr_info("cannot allocate config\n");
 				dev_put(dev);
-				return false;
+				return -EINVAL;
 			}
 			dev_mc_add(config->dev,config->clustermac, ETH_ALEN, 0);
 		}
@@ -405,10 +405,10 @@ static int clusterip_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",
 			par->family);
-		return false;
+		return -EINVAL;
 	}
 
-	return true;
+	return 0;
 }
 
 /* drop reference count of cluster config when rule is deleted */