---
 gatchat/gatppp.c  |   43 ++++++++++++++++++++++++++++++++++++++++---
 gatchat/gatppp.h  |    2 ++
 gatchat/ppp.h     |    2 +-
 gatchat/ppp_net.c |   46 ++++++++++++++++++++++++++++------------------
 4 files changed, 71 insertions(+), 22 deletions(-)

diff --git a/gatchat/gatppp.c b/gatchat/gatppp.c
index 993b5ea..d59f69b 100644
--- a/gatchat/gatppp.c
+++ b/gatchat/gatppp.c
@@ -76,6 +76,7 @@ struct _GAtPPP {
        gpointer debug_data;
        gboolean sta_pending;
        guint ppp_dead_source;
+       int fd;
 };
 
 void ppp_debug(GAtPPP *ppp, const char *str)
@@ -288,7 +289,7 @@ void ppp_auth_notify(GAtPPP *ppp, gboolean success)
 void ppp_ipcp_up_notify(GAtPPP *ppp, const char *local, const char *peer,
                                        const char *dns1, const char *dns2)
 {
-       ppp->net = ppp_net_new(ppp);
+       ppp->net = ppp_net_new(ppp, ppp->fd);
 
        if (ppp->net == NULL) {
                ppp->disconnect_reason = G_AT_PPP_REASON_NET_FAIL;
@@ -296,8 +297,14 @@ void ppp_ipcp_up_notify(GAtPPP *ppp, const char *local, 
const char *peer,
                return;
        }
 
-       if (ppp_net_set_mtu(ppp->net, ppp->mtu) == FALSE)
-               DBG(ppp, "Unable to set MTU");
+       /*
+        * If we have opened the tun interface locally,
+        * we have to set a MTU value.
+        */
+       if (ppp->fd < 0) {
+               if (ppp_net_set_mtu(ppp->net, ppp->mtu) == FALSE)
+                       DBG(ppp, "Unable to set MTU");
+       }
 
        ppp_enter_phase(ppp, PPP_PHASE_LINK_UP);
 
@@ -541,6 +548,9 @@ static GAtPPP *ppp_init_common(GAtHDLC *hdlc, gboolean 
is_server, guint32 ip)
 
        ppp->ref_count = 1;
 
+       /* Default value of fd is -1 */
+       ppp->fd = -1;
+
        /* set options to defaults */
        ppp->mru = DEFAULT_MRU;
        ppp->mtu = DEFAULT_MTU;
@@ -629,6 +639,33 @@ GAtPPP *g_at_ppp_server_new_from_io(GAtIO *io, const char 
*local)
                return NULL;
 
        ppp = ppp_init_common(hdlc, TRUE, ip);
+
+       g_at_hdlc_unref(hdlc);
+
+       return ppp;
+}
+
+GAtPPP *g_at_ppp_server_new_from_io_with_fd(GAtIO *io,
+                                               const char *local, int fd)
+{
+       GAtHDLC *hdlc;
+       GAtPPP *ppp;
+       guint32 ip;
+
+       if (local == NULL)
+               ip = 0;
+       else if (inet_pton(AF_INET, local, &ip) != 1)
+               return NULL;
+
+       hdlc = g_at_hdlc_new_from_io(io);
+       if (hdlc == NULL)
+               return NULL;
+
+       ppp = ppp_init_common(hdlc, TRUE, ip);
+
+       /* Set the fd value returned by ConnMan */
+       ppp->fd = fd;
+
        g_at_hdlc_unref(hdlc);
 
        return ppp;
diff --git a/gatchat/gatppp.h b/gatchat/gatppp.h
index fb5de4c..4ed4cde 100644
--- a/gatchat/gatppp.h
+++ b/gatchat/gatppp.h
@@ -54,6 +54,8 @@ GAtPPP *g_at_ppp_new(GIOChannel *modem);
 GAtPPP *g_at_ppp_new_from_io(GAtIO *io);
 GAtPPP *g_at_ppp_server_new(GIOChannel *modem, const char *local);
 GAtPPP *g_at_ppp_server_new_from_io(GAtIO *io, const char *local);
+GAtPPP *g_at_ppp_server_new_from_io_with_fd(GAtIO *io,
+                                               const char *local, int fd);
 
 void g_at_ppp_open(GAtPPP *ppp);
 void g_at_ppp_set_connect_function(GAtPPP *ppp, GAtPPPConnectFunc callback,
diff --git a/gatchat/ppp.h b/gatchat/ppp.h
index d2786d7..8107820 100644
--- a/gatchat/ppp.h
+++ b/gatchat/ppp.h
@@ -102,7 +102,7 @@ void ppp_chap_free(struct ppp_chap *chap);
 void ppp_chap_process_packet(struct ppp_chap *chap, const guint8 *new_packet);
 
 /* TUN / Network related functions */
-struct ppp_net *ppp_net_new(GAtPPP *ppp);
+struct ppp_net *ppp_net_new(GAtPPP *ppp, int fd);
 const char *ppp_net_get_interface(struct ppp_net *net);
 void ppp_net_process_packet(struct ppp_net *net, const guint8 *packet);
 void ppp_net_free(struct ppp_net *net);
diff --git a/gatchat/ppp_net.c b/gatchat/ppp_net.c
index 1a6cdf7..59c4b5e 100644
--- a/gatchat/ppp_net.c
+++ b/gatchat/ppp_net.c
@@ -123,12 +123,12 @@ const char *ppp_net_get_interface(struct ppp_net *net)
        return net->if_name;
 }
 
-struct ppp_net *ppp_net_new(GAtPPP *ppp)
+struct ppp_net *ppp_net_new(GAtPPP *ppp, int fd)
 {
        struct ppp_net *net;
        GIOChannel *channel = NULL;
        struct ifreq ifr;
-       int fd, err;
+       int fdesc, err;
 
        net = g_try_new0(struct ppp_net, 1);
        if (net == NULL)
@@ -140,23 +140,33 @@ struct ppp_net *ppp_net_new(GAtPPP *ppp)
                return NULL;
        }
 
-       /* open a tun interface */
-       fd = open("/dev/net/tun", O_RDWR);
-       if (fd < 0)
-               goto error;
-
-       memset(&ifr, 0, sizeof(ifr));
-       ifr.ifr_flags = IFF_TUN | IFF_NO_PI;
-       strcpy(ifr.ifr_name, "ppp%d");
-
-       err = ioctl(fd, TUNSETIFF, (void *) &ifr);
-       if (err < 0)
-               goto error;
-
-       net->if_name = strdup(ifr.ifr_name);
+       /*
+        * If the fd value is still the default one,
+        * open the tun interface and configure it.
+        */
+       if (fd< 0) {
+               /* open a tun interface */
+               fdesc = open("/dev/net/tun", O_RDWR);
+               if (fdesc < 0)
+                       goto error;
+
+               memset(&ifr, 0, sizeof(ifr));
+               ifr.ifr_flags = IFF_TUN | IFF_NO_PI;
+               strcpy(ifr.ifr_name, "ppp%d");
+
+               err = ioctl(fdesc, TUNSETIFF, (void *) &ifr);
+               if (err < 0)
+                       goto error;
+
+               net->if_name = strdup(ifr.ifr_name);
+               /* create a channel for reading and writing to this interface */
+               channel = g_io_channel_unix_new(fdesc);
+       } else {
+               net->if_name = strdup("Server ppp");
+               /* create a channel for reading and writing to this interface */
+               channel = g_io_channel_unix_new(fd);
+       }
 
-       /* create a channel for reading and writing to this interface */
-       channel = g_io_channel_unix_new(fd);
        if (channel == NULL)
                goto error;
 
-- 
1.7.1

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