[NETFILTER]: Convert x_tables matches/targets to centralized error checking
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/netfilter/xt_dccp.c b/net/netfilter/xt_dccp.c
index 779f42f..06e9ef2 100644
--- a/net/netfilter/xt_dccp.c
+++ b/net/netfilter/xt_dccp.c
@@ -133,52 +133,29 @@
unsigned int matchsize,
unsigned int hook_mask)
{
- const struct ipt_ip *ip = inf;
- const struct xt_dccp_info *info;
+ const struct xt_dccp_info *info = matchinfo;
- info = (const struct xt_dccp_info *)matchinfo;
-
- return ip->proto == IPPROTO_DCCP
- && !(ip->invflags & XT_INV_PROTO)
- && matchsize == XT_ALIGN(sizeof(struct xt_dccp_info))
- && !(info->flags & ~XT_DCCP_VALID_FLAGS)
+ return !(info->flags & ~XT_DCCP_VALID_FLAGS)
&& !(info->invflags & ~XT_DCCP_VALID_FLAGS)
&& !(info->invflags & ~info->flags);
}
-static int
-checkentry6(const char *tablename,
- const void *inf,
- void *matchinfo,
- unsigned int matchsize,
- unsigned int hook_mask)
-{
- const struct ip6t_ip6 *ip = inf;
- const struct xt_dccp_info *info;
-
- info = (const struct xt_dccp_info *)matchinfo;
-
- return ip->proto == IPPROTO_DCCP
- && !(ip->invflags & XT_INV_PROTO)
- && matchsize == XT_ALIGN(sizeof(struct xt_dccp_info))
- && !(info->flags & ~XT_DCCP_VALID_FLAGS)
- && !(info->invflags & ~XT_DCCP_VALID_FLAGS)
- && !(info->invflags & ~info->flags);
-}
-
-
static struct xt_match dccp_match =
{
.name = "dccp",
- .match = &match,
- .checkentry = &checkentry,
+ .match = match,
+ .matchsize = sizeof(struct xt_dccp_info),
+ .proto = IPPROTO_DCCP,
+ .checkentry = checkentry,
.me = THIS_MODULE,
};
static struct xt_match dccp6_match =
{
.name = "dccp",
- .match = &match,
- .checkentry = &checkentry6,
+ .match = match,
+ .matchsize = sizeof(struct xt_dccp_info),
+ .proto = IPPROTO_DCCP,
+ .checkentry = checkentry,
.me = THIS_MODULE,
};