ebpf: reduce counter size to allow netronome offload

ebpf/bypass_filter.c

@@ -52,8 +52,8 @@ struct flowv6_keys {
 };
 
 struct pair {
-    __u64 packets;
-    __u64 bytes;
+    __u32 packets;
+    __u32 bytes;
     __u32 hash;
 };
 

ebpf/xdp_filter.c

@@ -72,8 +72,8 @@ struct flowv6_keys {
 };
 
 struct pair {
-    __u64 packets;
-    __u64 bytes;
+    __u32 packets;
+    __u32 bytes;
     __u32 hash;
 };
 

src/util-ebpf.h

@@ -56,8 +56,8 @@ struct flowv6_keys {
 };
 
 struct pair {
-    uint64_t packets;
-    uint64_t bytes;
+    uint32_t packets;
+    uint32_t bytes;
     uint32_t hash;
 };