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_tcpudp.c b/net/netfilter/xt_tcpudp.c
index 19c31d4..dedde33 100644
--- a/net/netfilter/xt_tcpudp.c
+++ b/net/netfilter/xt_tcpudp.c
@@ -62,8 +62,7 @@
return invert;
}
-static bool tcp_mt(const struct sk_buff *skb,
- const struct xt_action_param *par)
+static bool tcp_mt(const struct sk_buff *skb, struct xt_action_param *par)
{
const struct tcphdr *th;
struct tcphdr _tcph;
@@ -129,8 +128,7 @@
return (tcpinfo->invflags & ~XT_TCP_INV_MASK) ? -EINVAL : 0;
}
-static bool udp_mt(const struct sk_buff *skb,
- const struct xt_action_param *par)
+static bool udp_mt(const struct sk_buff *skb, struct xt_action_param *par)
{
const struct udphdr *uh;
struct udphdr _udph;