slirp: Bind support for host forwarding rules

Extend the hostfwd rule format so that the user can specify on which
host interface qemu should listen for incoming connections. If omitted,
binding will takes place against all interfaces.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

1 files changed, 6 insertions, 5 deletions

diff --git a/slirp/slirp.c b/slirp/slirp.c
index ad88121c2c..ab0a8548aa 100644
--- a/slirp/slirp.c
+++ b/slirp/slirp.c
@@ -757,7 +757,7 @@ void if_encap(const uint8_t *ip_data, int ip_data_len)
 /* Unlistens a redirection
  *
  * Return value: number of redirs removed */
-int slirp_remove_hostfwd(int is_udp, int host_port)
+int slirp_remove_hostfwd(int is_udp, struct in_addr host_addr, int host_port)
 {
     struct socket *so;
     struct socket *head = (is_udp ? &udb : &tcb);
@@ -770,6 +770,7 @@ int slirp_remove_hostfwd(int is_udp, int host_port)
     for (so = head->so_next; so != head; so = so->so_next) {
         addr_len = sizeof(addr);
         if (getsockname(so->s, (struct sockaddr *)&addr, &addr_len) == 0 &&
+            addr.sin_addr.s_addr == host_addr.s_addr &&
             addr.sin_port == port) {
             close(so->s);
             sofree(so);
@@ -781,19 +782,19 @@ int slirp_remove_hostfwd(int is_udp, int host_port)
     return n;
 }
 
-int slirp_add_hostfwd(int is_udp, int host_port,
+int slirp_add_hostfwd(int is_udp, struct in_addr host_addr, int host_port,
                       struct in_addr guest_addr, int guest_port)
 {
     if (!guest_addr.s_addr) {
         guest_addr = vdhcp_startaddr;
     }
     if (is_udp) {
-        if (!udp_listen(htons(host_port), guest_addr.s_addr,
+        if (!udp_listen(host_addr.s_addr, htons(host_port), guest_addr.s_addr,
                         htons(guest_port), 0))
             return -1;
     } else {
-        if (!solisten(htons(host_port), guest_addr.s_addr,
-                      htons(guest_port), 0))
+        if (!tcp_listen(host_addr.s_addr, htons(host_port), guest_addr.s_addr,
+                        htons(guest_port), 0))
             return -1;
     }
     return 0;