add ETH_MIN_MTU and ETH_MAX_MTU from linux v4.10

min max mtu size definitions mostly for drivers.
new in linux commits a52ad514fdf3b8a57ca4322c92d2d8d5c6182485 and
d894be57ca92c8a8819ab544d550809e8731137b

diff --git a/include/netinet/if_ether.h b/include/netinet/if_ether.h
index 11ee658..c52514c 100644 (file)
--- a/include/netinet/if_ether.h
+++ b/include/netinet/if_ether.h
@@ -10,6 +10,8 @@
 #define ETH_DATA_LEN   1500
 #define ETH_FRAME_LEN  1514
 #define ETH_FCS_LEN    4
+#define ETH_MIN_MTU    68
+#define ETH_MAX_MTU    0xFFFFU
 
 #define ETH_P_LOOP     0x0060
 #define ETH_P_PUP      0x0200