netfilter: xtables: deconstify struct xt_action_param for matches
In future, layer-3 matches will be an xt module of their own, and
need to set the fragoff and thoff fields. Adding more pointers would
needlessy increase memory requirements (esp. so for 64-bit, where
pointers are wider).
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
diff --git a/net/netfilter/xt_length.c b/net/netfilter/xt_length.c
index 842149b..176e557 100644
--- a/net/netfilter/xt_length.c
+++ b/net/netfilter/xt_length.c
@@ -21,7 +21,7 @@
MODULE_ALIAS("ip6t_length");
static bool
-length_mt(const struct sk_buff *skb, const struct xt_action_param *par)
+length_mt(const struct sk_buff *skb, struct xt_action_param *par)
{
const struct xt_length_info *info = par->matchinfo;
u_int16_t pktlen = ntohs(ip_hdr(skb)->tot_len);
@@ -30,7 +30,7 @@
}
static bool
-length_mt6(const struct sk_buff *skb, const struct xt_action_param *par)
+length_mt6(const struct sk_buff *skb, struct xt_action_param *par)
{
const struct xt_length_info *info = par->matchinfo;
const u_int16_t pktlen = ntohs(ipv6_hdr(skb)->payload_len) +