User Networking: Enable removal of redirections
Using the new host_net_redir command you can easily create redirections
on the fly while your VM is running.
While that's great, it's missing the removal of redirections, in case you
want to have a port closed again at a later point in time.
This patch adds support for removal of redirections.
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
diff --git a/slirp/slirp.c b/slirp/slirp.c
index 04d3ded..33397c0 100644
--- a/slirp/slirp.c
+++ b/slirp/slirp.c
@@ -734,6 +734,29 @@
}
}
+/* Unlistens a redirection
+ *
+ * Return value: number of redirs removed */
+int slirp_redir_rm(int is_udp, int host_port)
+{
+ struct socket *so;
+ struct socket *head = (is_udp ? &udb : &tcb);
+ int fport = htons(host_port);
+ int n = 0;
+
+ loop_again:
+ for (so = head->so_next; so != head; so = so->so_next) {
+ if (so->so_fport == fport) {
+ close(so->s);
+ sofree(so);
+ n++;
+ goto loop_again;
+ }
+ }
+
+ return n;
+}
+
int slirp_redir(int is_udp, int host_port,
struct in_addr guest_addr, int guest_port)
{
