feature/network: Add support of infiniband network mac addresses

Infiniband MAC addresses have 20 octets.

Signed-off-by: Alexey Gladkov <[email protected]>

Author: legionus

features/network/data/lib/initrd/post/cmdline/network

@@ -142,8 +142,12 @@ ifname_to_var()
 			interface="${1#:}"
 			macaddr="$2:$3:$4:$5:$6:$7"
 			;;
+		21)
+			interface="${1#:}"
+			macaddr="$2:$3:$4:$5:$6:$7:$8:$9:${10}:${11}:${12}:${13}:${14}:${15}:${16}:${17}:${18}:${19}:${20}:${21}"
+			;;
 		*)
-			fatal "syntax error: ifname must contain 7 components"
+			fatal "syntax error: ifname must contain 7 or 21 components"
 			;;
 	esac
 }