Fix some minor issues

lib/flowspec_test.c

@@ -70,8 +70,8 @@ t_first_part(void)
   net_addr_flow4 *f;
   NET_ADDR_FLOW4_(f, ip4_build(10,0,0,1), 24, ((byte[]) { 0x00, 0x00, 0xab }));
 
-  const byte const *under240 = &f->data[1];
-  const byte const *above240 = &f->data[2];
+  const byte *under240 = &f->data[1];
+  const byte *above240 = &f->data[2];
 
   /* Case 0x00 0x00 */
   bt_assert(flow4_first_part(f) == NULL);

lib/net.h

@@ -358,10 +358,10 @@ static inline int net_zero_roa6(const net_addr_roa6 *a)
 { return !a->pxlen && ip6_zero(a->prefix) && !a->max_pxlen && !a->asn; }
 
 static inline int net_zero_flow4(const net_addr_flow4 *a)
-{ return !a->pxlen && ip4_zero(a->prefix) && !a->data; }
+{ return !a->pxlen && ip4_zero(a->prefix) && (a->length == sizeof(net_addr_flow4)); }
 
 static inline int net_zero_flow6(const net_addr_flow6 *a)
-{ return !a->pxlen && ip6_zero(a->prefix) && !a->data; }
+{ return !a->pxlen && ip6_zero(a->prefix) && (a->length == sizeof(net_addr_flow6)); }
 
 static inline int net_zero_mpls(const net_addr_mpls *a)
 { return !a->label; }

sysdep/bsd/krt-sock.Y

@@ -20,8 +20,8 @@ kern_sys_item:
    KERNEL TABLE expr {
 	if ($3 && (krt_max_tables == 1))
 	  cf_error("Multiple kernel routing tables not supported");
- 	if ($3 < 0 || $3 >= krt_max_tables)
-	  cf_error("Kernel table id must be in range 0-%d", krt_max_tables - 1);
+	if ($3 >= krt_max_tables)
+	  cf_error("Kernel table id must be in range 0-%u", krt_max_tables - 1);
 
 	THIS_KRT->sys.table_id = $3;
    }

sysdep/bsd/krt-sock.c

@@ -74,11 +74,11 @@ const int rt_default_ecmp = 0;
 
 /* Dynamic max number of tables */
 
-int krt_max_tables;
+uint krt_max_tables;
 
 #ifdef KRT_USE_SYSCTL_NET_FIBS
 
-static int
+static uint
 krt_get_max_tables(void)
 {
   int fibs;
@@ -90,7 +90,11 @@ krt_get_max_tables(void)
     return 1;
   }
 
-  return MIN(fibs, KRT_MAX_TABLES);
+  /* Should not happen */
+  if (fibs < 1)
+    return 1;
+
+  return (uint) MIN(fibs, KRT_MAX_TABLES);
 }
 
 #else

sysdep/bsd/krt-sys.h

@@ -31,7 +31,7 @@ static inline void kif_sys_copy_config(struct kif_config *d UNUSED, struct kif_c
 
 /* Kernel routes */
 
-extern int krt_max_tables;
+extern uint krt_max_tables;
 
 struct krt_params {
   int table_id;				/* Kernel table ID we sync with */