iotests: Add tests for refcount table growth

[qemu.git] / slirp / ip_icmp.c

diff --git a/slirp/ip_icmp.c b/slirp/ip_icmp.c
index 4b43994dbcb2e8884e119de0254b5d9e848a36e8..9f1cb08a18ce775ed4674ff654ff0dc540645993 100644 (file)
--- a/slirp/ip_icmp.c
+++ b/slirp/ip_icmp.c
@@ -66,6 +66,13 @@ void icmp_init(Slirp *slirp)
     slirp->icmp_last_so = &slirp->icmp;
 }
 
+void icmp_cleanup(Slirp *slirp)
+{
+    while (slirp->icmp.so_next != &slirp->icmp) {
+        icmp_detach(slirp->icmp.so_next);
+    }
+}
+
 static int icmp_send(struct socket *so, struct mbuf *m, int hlen)
 {
     struct ip *ip = mtod(m, struct ip *);
@@ -262,6 +269,11 @@ icmp_error(struct mbuf *msrc, u_char type, u_char code, int minsize,
 #endif
   if(ip->ip_off & IP_OFFMASK) goto end_error;    /* Only reply to fragment 0 */
 
+  /* Do not reply to source-only IPs */
+  if ((ip->ip_src.s_addr & htonl(~(0xf << 28))) == 0) {
+      goto end_error;
+  }
+
   shlen=ip->ip_hl << 2;
   s_ip_len=ip->ip_len;
   if(ip->ip_p == IPPROTO_ICMP) {
@@ -340,7 +352,7 @@ icmp_error(struct mbuf *msrc, u_char type, u_char code, int minsize,
 
   ip->ip_ttl = MAXTTL;
   ip->ip_p = IPPROTO_ICMP;
-  ip->ip_dst = ip->ip_src;    /* ip adresses */
+  ip->ip_dst = ip->ip_src;    /* ip addresses */
   ip->ip_src = m->slirp->vhost_addr;
 
   (void ) ip_output((struct socket *)NULL, m);