net: sched: em_nbyte: don't add the data offset twice

'ptr' is shifted by the offset and then validated,
the memcmp should not add it a second time.

Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/sched/em_nbyte.c b/net/sched/em_nbyte.c
index df3110d695857e672f1a50f83399a7f63959dd00..07c10bac06a079380576c0d025c397fea990b2ec 100644 (file)
--- a/net/sched/em_nbyte.c
+++ b/net/sched/em_nbyte.c
@@ -51,7 +51,7 @@ static int em_nbyte_match(struct sk_buff *skb, struct tcf_ematch *em,
        if (!tcf_valid_offset(skb, ptr, nbyte->hdr.len))
                return 0;
 
-       return !memcmp(ptr + nbyte->hdr.off, nbyte->pattern, nbyte->hdr.len);
+       return !memcmp(ptr, nbyte->pattern, nbyte->hdr.len);
 }
 
 static struct tcf_ematch_ops em_nbyte_ops = {