iphlpapi: Implement getNumArpEntries on FreeBSD.

configure

@@ -7088,6 +7088,7 @@ done
 
 
 
+
 for ac_header in \
 	AudioUnit/AudioUnit.h \
 	Carbon/Carbon.h \
@@ -7136,6 +7137,7 @@ for ac_header in \
 	mntent.h \
 	ncurses.h \
 	netdb.h \
+	netinet/if_ether.h \
 	netinet/in.h \
 	netinet/in_systm.h \
 	netinet/ip_icmp.h \

configure.ac

@@ -273,6 +273,7 @@ AC_CHECK_HEADERS(\
 	mntent.h \
 	ncurses.h \
 	netdb.h \
+	netinet/if_ether.h \
 	netinet/in.h \
 	netinet/in_systm.h \
 	netinet/ip_icmp.h \

dlls/iphlpapi/ipstats.c

@@ -46,6 +46,9 @@
 #ifdef HAVE_NET_IF_H
 #include <net/if.h>
 #endif
+#ifdef HAVE_NET_IF_DL_H
+#include <net/if_dl.h>
+#endif
 #ifdef HAVE_NET_IF_TYPES_H
 #include <net/if_types.h>
 #endif
@@ -55,6 +58,9 @@
 #ifdef HAVE_NET_IF_ARP_H
 #include <net/if_arp.h>
 #endif
+#ifdef HAVE_NETINET_IF_ETHER_H
+#include <netinet/if_ether.h>
+#endif
 #ifdef HAVE_NETINET_TCP_H
 #include <netinet/tcp.h>
 #endif
@@ -1234,6 +1240,46 @@ DWORD getRouteTable(PMIB_IPFORWARDTABLE *ppIpForwardTable, HANDLE heap,
 
 DWORD getNumArpEntries(void)
 {
+#if defined(HAVE_SYS_SYSCTL_H) && defined(NET_RT_DUMP)
+  int mib[] = {CTL_NET, PF_ROUTE, 0, AF_INET, NET_RT_FLAGS, RTF_LLINFO};
+#define MIB_LEN (sizeof(mib) / sizeof(mib[0]))
+  DWORD arpEntries = 0;
+  size_t needed;
+  char *buf, *lim, *next;
+  struct rt_msghdr *rtm;
+  struct sockaddr_inarp *sinarp;
+  struct sockaddr_dl *sdl;
+
+  if (sysctl (mib, MIB_LEN,  NULL, &needed, NULL, 0) == -1)
+  {
+     ERR ("failed to get size of arp table\n");
+     return 0;
+  }
+
+  buf = HeapAlloc (GetProcessHeap (), 0, needed);
+  if (!buf) return 0;
+
+  if (sysctl (mib, MIB_LEN, buf, &needed, NULL, 0) == -1)
+  {
+     ERR ("failed to get arp table\n");
+     HeapFree (GetProcessHeap (), 0, buf);
+     return 0;
+  }
+
+  lim = buf + needed;
+  next = buf;
+  while(next < lim)
+  {
+      rtm = (struct rt_msghdr *)next;
+      sinarp=(struct sockaddr_inarp *)(rtm + 1);
+      sdl = (struct sockaddr_dl *)((char *)sinarp + ROUNDUP(sinarp->sin_len));
+      if(sdl->sdl_alen) /* arp entry */
+      arpEntries++;
+      next += rtm->rtm_msglen;
+  }
+  HeapFree (GetProcessHeap (), 0, buf);
+  return arpEntries;
+#endif
   return getNumWithOneHeader("/proc/net/arp");
 }
 

include/config.h.in

@@ -441,6 +441,9 @@
 /* Define to 1 if you have the <netinet/icmp_var.h> header file. */
 #undef HAVE_NETINET_ICMP_VAR_H
 
+/* Define to 1 if you have the <netinet/if_ether.h> header file. */
+#undef HAVE_NETINET_IF_ETHER_H
+
 /* Define to 1 if you have the <netinet/in.h> header file. */
 #undef HAVE_NETINET_IN_H