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-rw-r--r--include/net/ip.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/net/ip.h b/include/net/ip.h
index e9ea7c7..d603cd3 100644
--- a/include/net/ip.h
+++ b/include/net/ip.h
@@ -250,6 +250,11 @@ int ip_decrease_ttl(struct iphdr *iph)
return --iph->ttl;
}
+static inline bool ip_is_fragment(const struct iphdr *iph)
+{
+ return (iph->frag_off & htons(IP_MF | IP_OFFSET)) != 0;
+}
+
static inline
int ip_dont_fragment(struct sock *sk, struct dst_entry *dst)
{
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