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authorWillem de Bruijn <willemb@google.com>2017-01-02 17:19:46 -0500
committerPablo Neira Ayuso <pablo@netfilter.org>2017-01-09 17:24:55 +0100
commitec23189049651b16dc2ffab35a4371dc1f491aca (patch)
treeabf3c783fb73b147f463fa686715a08fd2a969c1 /net/bridge/netfilter
parent4915f7bbc402071539ec0cb8c75aad878c982402 (diff)
downloadblackbird-op-linux-ec23189049651b16dc2ffab35a4371dc1f491aca.tar.gz
blackbird-op-linux-ec23189049651b16dc2ffab35a4371dc1f491aca.zip
xtables: extend matches and targets with .usersize
In matches and targets that define a kernel-only tail to their xt_match and xt_target data structs, add a field .usersize that specifies up to where data is to be shared with userspace. Performed a search for comment "Used internally by the kernel" to find relevant matches and targets. Manually inspected the structs to derive a valid offsetof. Signed-off-by: Willem de Bruijn <willemb@google.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'net/bridge/netfilter')
-rw-r--r--net/bridge/netfilter/ebt_limit.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/net/bridge/netfilter/ebt_limit.c b/net/bridge/netfilter/ebt_limit.c
index 517e78befcb2..61a9f1be1263 100644
--- a/net/bridge/netfilter/ebt_limit.c
+++ b/net/bridge/netfilter/ebt_limit.c
@@ -105,6 +105,7 @@ 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),
+ .usersize = offsetof(struct ebt_limit_info, prev),
#ifdef CONFIG_COMPAT
.compatsize = sizeof(struct ebt_compat_limit_info),
#endif
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