af-packet: change configuration format for multi interface

suricata.yaml

@@ -157,11 +157,10 @@ nfq:
 # af-packet support
 # Set threads to > 1 to use PACKET_FANOUT support
 af-packet:
+  - interface: eth0
     # Number of receive threads (>1 will enable experimental flow pinned
     # runmode)
     threads: 1
-  # default network interface
-  interface: eth0
     # Default clusterid.  AF_PACKET will load balance packets based on flow.
     # All threads/processes that will participate need to have the same
     # clusterid.
@@ -178,6 +177,12 @@ af-packet:
     defrag: yes
     # recv buffer size, increase value could improve performance
     # buffer-size: 32768
+  - interface: eth1
+    threads: 1
+    cluster-id: 98
+    cluster-type: cluster_round_robin
+    defrag: yes
+    # buffer-size: 32768
 
 defrag:
   max-frags: 65535