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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/ipv6/netfilter/ip6t_NPT.c
parent4915f7bbc402071539ec0cb8c75aad878c982402 (diff)
downloadlinux-ec23189049651b16dc2ffab35a4371dc1f491aca.tar.bz2
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/ipv6/netfilter/ip6t_NPT.c')
-rw-r--r--net/ipv6/netfilter/ip6t_NPT.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/net/ipv6/netfilter/ip6t_NPT.c b/net/ipv6/netfilter/ip6t_NPT.c
index 590f767db5d4..a379d2f79b19 100644
--- a/net/ipv6/netfilter/ip6t_NPT.c
+++ b/net/ipv6/netfilter/ip6t_NPT.c
@@ -112,6 +112,7 @@ static struct xt_target ip6t_npt_target_reg[] __read_mostly = {
.table = "mangle",
.target = ip6t_snpt_tg,
.targetsize = sizeof(struct ip6t_npt_tginfo),
+ .usersize = offsetof(struct ip6t_npt_tginfo, adjustment),
.checkentry = ip6t_npt_checkentry,
.family = NFPROTO_IPV6,
.hooks = (1 << NF_INET_LOCAL_IN) |
@@ -123,6 +124,7 @@ static struct xt_target ip6t_npt_target_reg[] __read_mostly = {
.table = "mangle",
.target = ip6t_dnpt_tg,
.targetsize = sizeof(struct ip6t_npt_tginfo),
+ .usersize = offsetof(struct ip6t_npt_tginfo, adjustment),
.checkentry = ip6t_npt_checkentry,
.family = NFPROTO_IPV6,
.hooks = (1 << NF_INET_PRE_ROUTING) |