netfilter: iptables: remove unused datalen variable

Signed-off-by: Jan Engelhardt <jengelh@medozas.de>

diff --git a/net/ipv4/netfilter/ip_tables.c b/net/ipv4/netfilter/ip_tables.c
index fdefae6..3856aa3 100644 (file)
--- a/net/ipv4/netfilter/ip_tables.c
+++ b/net/ipv4/netfilter/ip_tables.c
@@ -315,7 +315,6 @@ ipt_do_table(struct sk_buff *skb,
 
        static const char nulldevname[IFNAMSIZ] __attribute__((aligned(sizeof(long))));
        const struct iphdr *ip;
-       u_int16_t datalen;
        bool hotdrop = false;
        /* Initializing verdict to NF_DROP keeps gcc happy. */
        unsigned int verdict = NF_DROP;
@@ -328,7 +327,6 @@ ipt_do_table(struct sk_buff *skb,
 
        /* Initialization */
        ip = ip_hdr(skb);
-       datalen = skb->len - ip->ihl * 4;
        indev = in ? in->name : nulldevname;
        outdev = out ? out->name : nulldevname;
        /* We handle fragments by dealing with the first fragment as
@@ -427,8 +425,6 @@ ipt_do_table(struct sk_buff *skb,
 #endif
                /* Target might have changed stuff. */
                ip = ip_hdr(skb);
-               datalen = skb->len - ip->ihl * 4;
-
                if (verdict == IPT_CONTINUE)
                        e = ipt_next_entry(e);
                else