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netfilter: ebt_limit: add CONFIG_COMPAT support

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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>
This commit is contained in:
Florian Westphal
2010-01-27 14:38:32 +01:00
parent 90b89af7e1
commit 314ddca3b1
1 changed files with 16 additions and 0 deletions
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16
net/bridge/netfilter/ebt_limit.c
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@@ -84,6 +84,19 @@ static bool ebt_limit_mt_check(const struct xt_mtchk_param *par)
return true; 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 = { static struct xt_match ebt_limit_mt_reg __read_mostly = {
.name = "limit", .name = "limit",
.revision = 0, .revision = 0,
@@ -91,6 +104,9 @@ static struct xt_match ebt_limit_mt_reg __read_mostly = {
.match = ebt_limit_mt, .match = ebt_limit_mt,
.checkentry = ebt_limit_mt_check, .checkentry = ebt_limit_mt_check,
.matchsize = sizeof(struct ebt_limit_info), .matchsize = sizeof(struct ebt_limit_info),
#ifdef CONFIG_COMPAT
.compatsize = sizeof(struct ebt_compat_limit_info),
#endif
.me = THIS_MODULE, .me = THIS_MODULE,
}; };