1 files changed, 3 insertions, 0 deletions
diff --git a/ring.h b/ring.h
index b9b8c11..9e517be 100644
--- a/ring.h
+++ b/ring.h
@@ -42,6 +42,9 @@ struct tun_data;
 // results in 656 frames (1048576 bytes).
 #define TP_NUM_BLOCKS 16
 
+#define TP_CSUM_NONE        (0)
+#define TP_CSUM_UNNECESSARY (1)
+
 struct packet_ring {
   uint8_t *base;
   struct tpacket2_hdr *next;