2006-03-21 Robert Love <rml@novell.com>

* src/NetworkManagerSystem.c, src/NetworkManagerSystem.h: Add
	  nm_system_get_mtu(), which returns a user-provided or system-mandated
	  MTU value for a given device, if any, or zero if no such value
	  exists.  Add nm_system_set_mtu() to set the MTU for a given device
	  if we have a provided value.
	* src/nm-device.c: Set the MTU of devices.
	* src/backends/NetworkManagerSuSE.c: Read MTU, if any, from sysconfig.
	* src/backends/NetworkManagerDebian.c,
	  src/backends/NetworkManagerGentoo.c,
	  src/backends/NetworkManagerRedHat.c,
	  src/backends/NetworkManagerSlackware.c: Implement stub functions.


git-svn-id: http://svn-archive.gnome.org/svn/NetworkManager/trunk@1626 4912f4e0-d625-0410-9fb7-b9a5a253dbdc

ChangeLog

@@ -1,3 +1,17 @@
+2006-03-21  Robert Love  <rml@novell.com>
+
+	* src/NetworkManagerSystem.c, src/NetworkManagerSystem.h: Add
+	  nm_system_get_mtu(), which returns a user-provided or system-mandated
+	  MTU value for a given device, if any, or zero if no such value
+	  exists.  Add nm_system_set_mtu() to set the MTU for a given device
+	  if we have a provided value.
+	* src/nm-device.c: Set the MTU of devices.
+	* src/backends/NetworkManagerSuSE.c: Read MTU, if any, from sysconfig.
+	* src/backends/NetworkManagerDebian.c,
+	  src/backends/NetworkManagerGentoo.c,
+	  src/backends/NetworkManagerRedHat.c,
+	  src/backends/NetworkManagerSlackware.c: Implement stub functions.
+
 2006-03-21  Robert Love  <rml@novell.com>
 
 	* src/backends/NetworkManagerSuSE.c: Strip hypens from hex key in

src/NetworkManagerSystem.c

@@ -296,6 +296,49 @@ out:
 }
 
 
+/*
+ * nm_system_set_mtu
+ *
+ * Set the MTU for a given device.
+ */
+void nm_system_set_mtu (NMDevice *dev)
+{
+	struct rtnl_link *		request;
+	struct rtnl_link *		old;
+	unsigned long			mtu;
+	struct nl_handle *		nlh;
+	const char *			iface;
+
+	mtu = nm_system_get_mtu (dev);
+	if (!mtu)
+		return;
+
+	nlh = new_nl_handle ();
+	if (!nlh)
+		return;
+
+	request = rtnl_link_alloc ();
+	if (!request)
+		goto out_nl_close;
+
+	iface = nm_device_get_iface (dev);
+	old = iface_to_rtnl_link (iface, nlh);
+	if (!old)
+		goto out_request;
+
+	nm_info ("Setting MTU of interface '%s' to %ld", iface, mtu);
+	rtnl_link_set_mtu (request, mtu);
+	rtnl_link_change (nlh, old, request, 0);
+
+	rtnl_link_put (old);
+out_request:
+	rtnl_link_put (request);
+out_nl_close:
+	nl_close (nlh);
+	nl_handle_destroy (nlh);
+}
+
+
 /*
  * nm_system_vpn_device_set_from_ip4_config
  *

src/NetworkManagerSystem.h

@@ -85,6 +85,9 @@ void			nm_system_set_hostname (NMIP4Config *config);
 void			nm_system_activate_nis (NMIP4Config *config);
 void			nm_system_shutdown_nis (void);
 
+void			nm_system_set_mtu (NMDevice *dev);
+unsigned int		nm_system_get_mtu (NMDevice *dev);
+
 gboolean		nm_system_should_modify_resolv_conf (void);
 
 #endif

src/backends/NetworkManagerDebian.c

@@ -681,3 +681,15 @@ gboolean nm_system_should_modify_resolv_conf (void)
 {
 	return TRUE;
 }
+
+
+/*
+ * nm_system_get_mtu
+ *
+ * Return a user-provided or system-mandated MTU for this device or zero if
+ * no such MTU is provided.
+ */
+unsigned int nm_system_get_mtu (NMDevice *dev)
+{
+	return 0;
+}

src/backends/NetworkManagerGentoo.c

@@ -583,3 +583,14 @@ gboolean nm_system_should_modify_resolv_conf (void)
 {
 	return TRUE;
 }
+
+/*
+ * nm_system_get_mtu
+ *
+ * Return a user-provided or system-mandated MTU for this device or zero if
+ * no such MTU is provided.
+ */
+unsigned int nm_system_get_mtu (NMDevice *dev)
+{
+	return 0;
+}

src/backends/NetworkManagerRedHat.c

@@ -930,3 +930,15 @@ gboolean nm_system_should_modify_resolv_conf (void)
 {
 	return TRUE;
 }
+
+
+/*
+ * nm_system_get_mtu
+ *
+ * Return a user-provided or system-mandated MTU for this device or zero if
+ * no such MTU is provided.
+ */
+unsigned int nm_system_get_mtu (NMDevice *dev)
+{
+	return 0;
+}

src/backends/NetworkManagerSlackware.c

@@ -423,3 +423,15 @@ gboolean nm_system_should_modify_resolv_conf (void)
 {
 	return TRUE;
 }
+
+
+/*
+ * nm_system_get_mtu
+ *
+ * Return a user-provided or system-mandated MTU for this device or zero if
+ * no such MTU is provided.
+ */
+unsigned int nm_system_get_mtu (NMDevice *dev)
+{
+	return 0;
+}

src/backends/NetworkManagerSuSE.c

@@ -354,6 +354,7 @@ typedef struct SuSEDeviceConfigData
 	NMIP4Config *	config;
 	gboolean		use_dhcp;
 	gboolean		system_disabled;
+	unsigned int	mtu;
 } SuSEDeviceConfigData;
 
 /*
@@ -521,6 +522,17 @@ found:
 		free (buf);
 	}
 
+	if ((buf = svGetValue (file, "MTU")))
+	{
+		unsigned long mtu;
+
+		errno = 0;
+		mtu = strtoul (buf, NULL, 10);
+		if (!errno && mtu > 500 && mtu < INT_MAX)
+			sys_data->mtu = (unsigned int) mtu;
+		free (buf);
+	}
+
 	if ((buf = svGetValue (file, "WIRELESS_ESSID")) && strlen (buf) > 1)
 	{
 		NMAccessPoint *	ap;
@@ -763,6 +775,9 @@ out:
 	nm_debug ("mask=%s", ip_str);
 	g_free (ip_str);
 
+	if (sys_data->mtu)
+		nm_debug ("mtu=%u", sys_data->mtu);
+
 	len = nm_ip4_config_get_num_nameservers (sys_data->config);
 	for (i = 0; i < len; i++)
 	{
@@ -1252,3 +1267,20 @@ out_gfree:
 	return ret;
 }
 
+
+/*
+ * nm_system_get_mtu
+ *
+ * Return a user-provided or system-mandated MTU for this device or zero if
+ * no such MTU is provided.
+ */
+unsigned int nm_system_get_mtu (NMDevice *dev)
+{
+	SuSEDeviceConfigData *	sys_data;
+
+	sys_data = nm_device_get_system_config_data (dev);
+	if (!sys_data)
+		return 0;
+
+	return sys_data->mtu;
+}

src/nm-device.c

@@ -1228,6 +1228,7 @@ nm_device_activate_stage5_ip_config_commit (NMActRequest *req)
 		nm_system_restart_mdns_responder ();
 		nm_system_set_hostname (self->priv->ip4_config);
 		nm_system_activate_nis (self->priv->ip4_config);
+		nm_system_set_mtu (self);
 		if (NM_DEVICE_GET_CLASS (self)->update_link)
 			NM_DEVICE_GET_CLASS (self)->update_link (self);
 		nm_policy_schedule_activation_finish (req);