1 files changed, 1 insertions, 0 deletions
diff --git a/tap.h b/tap.h
index 84e9fdb..dd39fd8 100644
--- a/tap.h
+++ b/tap.h
@@ -69,6 +69,7 @@ static inline void tap_hdr_update(struct tap_hdr *thdr, size_t l2len)
 		thdr->vnet_len = htonl(l2len);
 }
 
+unsigned long tap_l2_max_len(const struct ctx *c);
 void *tap_push_l2h(const struct ctx *c, void *buf, uint16_t proto);
 void *tap_push_ip4h(struct iphdr *ip4h, struct in_addr src,
 		     struct in_addr dst, size_t l4len, uint8_t proto);