From 57ab33ece875e62e47d09e52bcd0d9d108594729 Mon Sep 17 00:00:00 2001

From: Jan Kiszka <jan.kiszka@siemens.com>

Date: Wed, 22 Jul 2009 17:03:52 +0200

Subject: [PATCH] slirp: Fix guestfwd for incoming data

Unless a virtual server address was explicitly defined (which is

impossible with the legacy -net channel format), guestfwd did not

properly forwarded host->guest packets. This patch fixes it.

(cherry picked from commit bb53fc5394201c0cbe3c89a1c9fa5fbd6a3b832c)

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

Signed-off-by: Mark McLoughlin <markmc@redhat.com>

Fedora-patch: qemu-slirp-Fix-guestfwd-for-incoming-data.patch

---

 net.c            |   11 ++++++-----

 slirp/libslirp.h |    2 +-

 slirp/slirp.c    |   14 +++++++-------

 3 files changed, 14 insertions(+), 13 deletions(-)

diff --git a/net.c b/net.c

index a34f1d3..7e1edf6 100644

--- a/net.c

+++ b/net.c

@@ -1170,7 +1170,7 @@ static void slirp_smb(SlirpState* s, Monitor *mon, const char *exported_dir,

     snprintf(smb_cmdline, sizeof(smb_cmdline), "%s -s %s",

              SMBD_COMMAND, smb_conf);

-    if (slirp_add_exec(s->slirp, 0, smb_cmdline, vserver_addr, 139) < 0) {

+    if (slirp_add_exec(s->slirp, 0, smb_cmdline, &vserver_addr, 139) < 0) {

         slirp_smb_cleanup(s);

         config_error(mon, "conflicting/invalid smbserver address\n");

     }

@@ -1259,16 +1259,17 @@ static void slirp_guestfwd(SlirpState *s, Monitor *mon, const char *config_str,

         qemu_free(fwd);

         return;

     }

-    fwd->server = server;

-    fwd->port = port;

-    fwd->slirp = s->slirp;

-    if (slirp_add_exec(s->slirp, 3, fwd->hd, server, port) < 0) {

+    if (slirp_add_exec(s->slirp, 3, fwd->hd, &server, port) < 0) {

         config_error(mon, "conflicting/invalid host:port in guest forwarding "

                      "rule '%s'\n", config_str);

         qemu_free(fwd);

         return;

     }

+    fwd->server = server;

+    fwd->port = port;

+    fwd->slirp = s->slirp;

+

     qemu_chr_add_handlers(fwd->hd, guestfwd_can_read, guestfwd_read,

                           NULL, fwd);

     return;

diff --git a/slirp/libslirp.h b/slirp/libslirp.h

index 3bcc392..93087ed 100644

--- a/slirp/libslirp.h

+++ b/slirp/libslirp.h

@@ -33,7 +33,7 @@ int slirp_add_hostfwd(Slirp *slirp, int is_udp,

 int slirp_remove_hostfwd(Slirp *slirp, int is_udp,

                          struct in_addr host_addr, int host_port);

 int slirp_add_exec(Slirp *slirp, int do_pty, const void *args,

-                   struct in_addr guest_addr, int guest_port);

+                   struct in_addr *guest_addr, int guest_port);

 void slirp_connection_info(Slirp *slirp, Monitor *mon);

diff --git a/slirp/slirp.c b/slirp/slirp.c

index 0ce62a3..9be8553 100644

--- a/slirp/slirp.c

+++ b/slirp/slirp.c

@@ -794,19 +794,19 @@ int slirp_add_hostfwd(Slirp *slirp, int is_udp, struct in_addr host_addr,

 }

 int slirp_add_exec(Slirp *slirp, int do_pty, const void *args,

-                   struct in_addr guest_addr, int guest_port)

+                   struct in_addr *guest_addr, int guest_port)

 {

-    if (!guest_addr.s_addr) {

-        guest_addr.s_addr = slirp->vnetwork_addr.s_addr |

+    if (!guest_addr->s_addr) {

+        guest_addr->s_addr = slirp->vnetwork_addr.s_addr |

             (htonl(0x0204) & ~slirp->vnetwork_mask.s_addr);

     }

-    if ((guest_addr.s_addr & slirp->vnetwork_mask.s_addr) !=

+    if ((guest_addr->s_addr & slirp->vnetwork_mask.s_addr) !=

         slirp->vnetwork_addr.s_addr ||

-        guest_addr.s_addr == slirp->vhost_addr.s_addr ||

-        guest_addr.s_addr == slirp->vnameserver_addr.s_addr) {

+        guest_addr->s_addr == slirp->vhost_addr.s_addr ||

+        guest_addr->s_addr == slirp->vnameserver_addr.s_addr) {

         return -1;

     }

-    return add_exec(&slirp->exec_list, do_pty, (char *)args, guest_addr,

+    return add_exec(&slirp->exec_list, do_pty, (char *)args, *guest_addr,

                     htons(guest_port));

 }

-- 

1.6.2.5