From 314ddca3b172fdb9c23a25c545505dbde557602e Mon Sep 17 00:00:00 2001
From: Florian Westphal <fw@strlen.de>
Date: Wed, 27 Jan 2010 14:38:32 +0100
Subject: [PATCH] netfilter: ebt_limit: add CONFIG_COMPAT support
ebt_limit structure is larger on 64 bit systems due
to "long" type used in the (kernel-only) data section.
Setting .compatsize is enough in this case, these values
have no meaning in userspace.
Signed-off-by: Florian Westphal <fwestphal@astaro.com>
---
net/bridge/netfilter/ebt_limit.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/net/bridge/netfilter/ebt_limit.c b/net/bridge/netfilter/ebt_limit.c
index 9dd16e6b10e7..7a8182710eb3 100644
--- a/net/bridge/netfilter/ebt_limit.c
+++ b/net/bridge/netfilter/ebt_limit.c
@@ -84,6 +84,19 @@ static bool ebt_limit_mt_check(const struct xt_mtchk_param *par)
return true;
}
+
+#ifdef CONFIG_COMPAT
+/*
+ * no conversion function needed --
+ * only avg/burst have meaningful values in userspace.
+ */
+struct ebt_compat_limit_info {
+ compat_uint_t avg, burst;
+ compat_ulong_t prev;
+ compat_uint_t credit, credit_cap, cost;
+};
+#endif
+
static struct xt_match ebt_limit_mt_reg __read_mostly = {
.name = "limit",
.revision = 0,
@@ -91,6 +104,9 @@ static struct xt_match ebt_limit_mt_reg __read_mostly = {
.match = ebt_limit_mt,
.checkentry = ebt_limit_mt_check,
.matchsize = sizeof(struct ebt_limit_info),
+#ifdef CONFIG_COMPAT
+ .compatsize = sizeof(struct ebt_compat_limit_info),
+#endif
.me = THIS_MODULE,
};
--
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