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>

2 files changed, 6 insertions, 6 deletions

diff --git a/net/ipv6/netfilter/ip6t_LOG.c b/net/ipv6/netfilter/ip6t_LOG.c
index bcc3fc19374a..439ededd5300 100644
--- a/net/ipv6/netfilter/ip6t_LOG.c
+++ b/net/ipv6/netfilter/ip6t_LOG.c
@@ -457,13 +457,13 @@ static int log_tg6_check(const struct xt_tgchk_param *par)
 
         if (loginfo->level >= 8) {
                 pr_debug("level %u >= 8\n", loginfo->level);
-                return false;
+                return -EINVAL;
         }
         if (loginfo->prefix[sizeof(loginfo->prefix)-1] != '\0') {
                 pr_debug("prefix not null-terminated\n");
-                return false;
+                return -EINVAL;
         }
-        return true;
+        return 0;
 }
 
 static struct xt_target log_tg6_reg __read_mostly = {
diff --git a/net/ipv6/netfilter/ip6t_REJECT.c b/net/ipv6/netfilter/ip6t_REJECT.c
index 8d5141ece671..55b9b2da1340 100644
--- a/net/ipv6/netfilter/ip6t_REJECT.c
+++ b/net/ipv6/netfilter/ip6t_REJECT.c
@@ -220,16 +220,16 @@ static int reject_tg6_check(const struct xt_tgchk_param *par)
 
         if (rejinfo->with == IP6T_ICMP6_ECHOREPLY) {
                 pr_info("ECHOREPLY is not supported.\n");
-                return false;
+                return -EINVAL;
         } else if (rejinfo->with == IP6T_TCP_RESET) {
                 /* Must specify that it's a TCP packet */
                 if (e->ipv6.proto != IPPROTO_TCP ||
                     (e->ipv6.invflags & XT_INV_PROTO)) {
                         pr_info("TCP_RESET illegal for non-tcp\n");
-                        return false;
+                        return -EINVAL;
                 }
         }
-        return true;
+        return 0;
 }
 
 static struct xt_target reject_tg6_reg __read_mostly = {