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authorAlexander Graf <agraf@suse.de>2009-05-26 13:03:26 +0200
committerAnthony Liguori <aliguori@us.ibm.com>2009-05-27 09:46:12 -0500
commitc1261d8d1617d8cf5722039a59ebb66c310f3aea (patch)
tree8aad15c7b36255d671f3911886b9c0985ee73f28 /slirp
parent8a43b1ea7fd02a8e9a5c5ef58017b1bd059663bb (diff)
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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>
Diffstat (limited to 'slirp')
-rw-r--r--slirp/libslirp.h1
-rw-r--r--slirp/slirp.c23
2 files changed, 24 insertions, 0 deletions
diff --git a/slirp/libslirp.h b/slirp/libslirp.h
index a1cd70e..6fc2c32 100644
--- a/slirp/libslirp.h
+++ b/slirp/libslirp.h
@@ -18,6 +18,7 @@ void slirp_input(const uint8_t *pkt, int pkt_len);
int slirp_can_output(void);
void slirp_output(const uint8_t *pkt, int pkt_len);
+int slirp_redir_rm(int is_udp, int host_port);
int slirp_redir(int is_udp, int host_port,
struct in_addr guest_addr, int guest_port);
int slirp_add_exec(int do_pty, const void *args, int addr_low_byte,
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 @@ void if_encap(const uint8_t *ip_data, int ip_data_len)
}
}
+/* 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)
{