Relevant only for OLPC at this point; the mesh device uses it to
target DHCP requests at a pre-defined mesh portal anycast address.
---
src/dhcp-manager/nm-dhcp-dhclient.c | 23 +++++++++++++++++++----
src/dhcp-manager/nm-dhcp-dhcpcd.c | 3 ++-
src/dhcp-manager/nm-dhcp-manager.c | 5 +++--
src/dhcp-manager/nm-dhcp-manager.h | 6 ++++--
src/nm-device.c | 32 +++++++++++++++++++++++++++++---
src/nm-device.h | 1 +
6 files changed, 58 insertions(+), 12 deletions(-)
diff --git a/src/dhcp-manager/nm-dhcp-dhclient.c
b/src/dhcp-manager/nm-dhcp-dhclient.c
index 81cecb6..691e129 100644
--- a/src/dhcp-manager/nm-dhcp-dhclient.c
+++ b/src/dhcp-manager/nm-dhcp-dhclient.c
@@ -84,6 +84,7 @@ get_leasefile_for_iface (const char * iface, const char *uuid)
static gboolean
merge_dhclient_config (NMDHCPDevice *device,
NMSettingIP4Config *s_ip4,
+ guint8 *anycast_addr,
const char *contents,
const char *orig,
GError **error)
@@ -162,6 +163,17 @@ merge_dhclient_config (NMDHCPDevice *device,
g_string_append_printf (new_contents,
DHCP_HOSTNAME_FORMAT "\n", tmp);
}
+ if (anycast_addr) {
+ g_string_append_printf (new_contents, "interface \"%s\" {\n"
+ " initial-interval 1; \n"
+ " anycast-mac ethernet
%02x:%02x:%02x:%02x:%02x:%02x;\n"
+ "}\n",
+ device->iface,
+ anycast_addr[0], anycast_addr[1],
+ anycast_addr[2], anycast_addr[3],
+ anycast_addr[4], anycast_addr[5]);
+ }
+
if (g_file_set_contents (device->conf_file, new_contents->str, -1,
error))
success = TRUE;
@@ -176,7 +188,9 @@ merge_dhclient_config (NMDHCPDevice *device,
* config file along with the NM options.
*/
static gboolean
-create_dhclient_config (NMDHCPDevice *device, NMSettingIP4Config *s_ip4)
+create_dhclient_config (NMDHCPDevice *device,
+ NMSettingIP4Config *s_ip4,
+ guint8 *dhcp_anycast_addr)
{
char *orig = NULL, *contents = NULL;
GError *error = NULL;
@@ -216,7 +230,7 @@ create_dhclient_config (NMDHCPDevice *device,
NMSettingIP4Config *s_ip4)
out:
error = NULL;
- if (merge_dhclient_config (device, s_ip4, contents, orig, &error))
+ if (merge_dhclient_config (device, s_ip4, dhcp_anycast_addr, contents,
orig, &error))
success = TRUE;
else {
nm_warning ("%s: error creating dhclient configuration: %s",
@@ -242,7 +256,8 @@ dhclient_child_setup (gpointer user_data G_GNUC_UNUSED)
GPid
nm_dhcp_client_start (NMDHCPDevice *device,
const char *uuid,
- NMSettingIP4Config *s_ip4)
+ NMSettingIP4Config *s_ip4,
+ guint8 *dhcp_anycast_addr)
{
GPtrArray *dhclient_argv = NULL;
GPid pid = 0;
@@ -266,7 +281,7 @@ nm_dhcp_client_start (NMDHCPDevice *device,
goto out;
}
- if (!create_dhclient_config (device, s_ip4))
+ if (!create_dhclient_config (device, s_ip4, dhcp_anycast_addr))
goto out;
/* Kill any existing dhclient bound to this interface */
diff --git a/src/dhcp-manager/nm-dhcp-dhcpcd.c
b/src/dhcp-manager/nm-dhcp-dhcpcd.c
index 05db9dd..a6ce8d2 100644
--- a/src/dhcp-manager/nm-dhcp-dhcpcd.c
+++ b/src/dhcp-manager/nm-dhcp-dhcpcd.c
@@ -62,7 +62,8 @@ dhcpcd_child_setup (gpointer user_data G_GNUC_UNUSED)
GPid
nm_dhcp_client_start (NMDHCPDevice *device,
const char *uuid,
- NMSettingIP4Config *s_ip4)
+ NMSettingIP4Config *s_ip4,
+ guint8 *dhcp_anycast_addr)
{
GPtrArray *argv = NULL;
GPid pid = 0;
diff --git a/src/dhcp-manager/nm-dhcp-manager.c
b/src/dhcp-manager/nm-dhcp-manager.c
index c5a6509..523a3ee 100644
--- a/src/dhcp-manager/nm-dhcp-manager.c
+++ b/src/dhcp-manager/nm-dhcp-manager.c
@@ -578,7 +578,8 @@ nm_dhcp_manager_begin_transaction (NMDHCPManager *manager,
const char *iface,
const char *uuid,
NMSettingIP4Config *s_ip4,
- guint32 timeout)
+ guint32 timeout,
+ guint8 *dhcp_anycast_addr)
{
NMDHCPManagerPrivate *priv;
NMDHCPDevice *device;
@@ -603,7 +604,7 @@ nm_dhcp_manager_begin_transaction (NMDHCPManager *manager,
nm_info ("Activation (%s) Beginning DHCP transaction (timeout in %d
seconds)",
iface, timeout);
- device->pid = nm_dhcp_client_start (device, uuid, s_ip4);
+ device->pid = nm_dhcp_client_start (device, uuid, s_ip4,
dhcp_anycast_addr);
if (device->pid == 0)
return FALSE;
diff --git a/src/dhcp-manager/nm-dhcp-manager.h
b/src/dhcp-manager/nm-dhcp-manager.h
index 79964a9..2c5514e 100644
--- a/src/dhcp-manager/nm-dhcp-manager.h
+++ b/src/dhcp-manager/nm-dhcp-manager.h
@@ -91,7 +91,8 @@ gboolean nm_dhcp_manager_begin_transaction
(NMDHCPManager *manager,
const char *iface,
const char *uuid,
NMSettingIP4Config *s_ip4,
- guint32 timeout);
+ guint32 timeout,
+ guint8
*dhcp_anycast_addr);
void nm_dhcp_manager_cancel_transaction (NMDHCPManager *manager,
const char *iface);
NMIP4Config * nm_dhcp_manager_get_ip4_config (NMDHCPManager *manager,
const char *iface);
@@ -105,7 +106,8 @@ gboolean nm_dhcp_manager_foreach_dhcp4_option
(NMDHCPManager *self,
/* The following are implemented by the DHCP client backends */
GPid nm_dhcp_client_start (NMDHCPDevice *device,
const char *uuid,
- NMSettingIP4Config
*s_ip4);
+ NMSettingIP4Config *s_ip4,
+ guint8 *anycast_addr);
void nm_dhcp_client_stop (NMDHCPDevice *device,
pid_t pid);
gboolean nm_dhcp_client_process_classless_routes (GHashTable *options,
diff --git a/src/nm-device.c b/src/nm-device.c
index c55a9e5..046e795 100644
--- a/src/nm-device.c
+++ b/src/nm-device.c
@@ -94,6 +94,7 @@ struct _NMDevicePrivate
guint32 dhcp_timeout;
gulong dhcp_state_sigid;
gulong dhcp_timeout_sigid;
+ GByteArray * dhcp_anycast_address;
NMDHCP4Config * dhcp4_config;
/* dnsmasq stuff for shared connections */
@@ -891,6 +892,10 @@ real_act_stage3_ip_config_start (NMDevice *self,
NMDeviceStateReason *reason)
if (!s_ip4 || !method || !strcmp (method,
NM_SETTING_IP4_CONFIG_METHOD_AUTO)) {
NMDevicePrivate *priv = NM_DEVICE_GET_PRIVATE (self);
gboolean success;
+ guint8 *anycast = NULL;
+
+ if (priv->dhcp_anycast_address)
+ anycast = priv->dhcp_anycast_address->data;
/* Begin a DHCP transaction on the interface */
nm_device_set_use_dhcp (self, TRUE);
@@ -898,7 +903,7 @@ real_act_stage3_ip_config_start (NMDevice *self,
NMDeviceStateReason *reason)
/* DHCP manager will cancel any transaction already in progress
and we do not
want to cancel this activation if we get "down" state from
that. */
g_signal_handler_block (priv->dhcp_manager,
priv->dhcp_state_sigid);
- success = nm_dhcp_manager_begin_transaction
(priv->dhcp_manager, ip_iface, uuid, s_ip4, priv->dhcp_timeout);
+ success = nm_dhcp_manager_begin_transaction
(priv->dhcp_manager, ip_iface, uuid, s_ip4, priv->dhcp_timeout, anycast);
g_signal_handler_unblock (priv->dhcp_manager,
priv->dhcp_state_sigid);
if (success) {
@@ -2217,6 +2222,8 @@ nm_device_finalize (GObject *object)
g_free (self->priv->iface);
g_free (self->priv->ip_iface);
g_free (self->priv->driver);
+ if (self->priv->dhcp_anycast_address)
+ g_byte_array_free (self->priv->dhcp_anycast_address, TRUE);
G_OBJECT_CLASS (nm_device_parent_class)->finalize (object);
}
@@ -2514,11 +2521,30 @@ nm_device_set_managed (NMDevice *device,
}
void
-nm_device_set_dhcp_timeout (NMDevice *device,
- guint32 timeout)
+nm_device_set_dhcp_timeout (NMDevice *device, guint32 timeout)
{
g_return_if_fail (NM_IS_DEVICE (device));
NM_DEVICE_GET_PRIVATE (device)->dhcp_timeout = timeout;
}
+void
+nm_device_set_dhcp_anycast_address (NMDevice *device, guint8 *addr)
+{
+ NMDevicePrivate *priv;
+
+ g_return_if_fail (NM_IS_DEVICE (device));
+
+ priv = NM_DEVICE_GET_PRIVATE (device);
+
+ if (priv->dhcp_anycast_address) {
+ g_byte_array_free (priv->dhcp_anycast_address, TRUE);
+ priv->dhcp_anycast_address = NULL;
+ }
+
+ if (addr) {
+ priv->dhcp_anycast_address = g_byte_array_sized_new (ETH_ALEN);
+ g_byte_array_append (priv->dhcp_anycast_address, addr,
ETH_ALEN);
+ }
+}
+
diff --git a/src/nm-device.h b/src/nm-device.h
index fc394dd..05409b5 100644
--- a/src/nm-device.h
+++ b/src/nm-device.h
@@ -166,6 +166,7 @@ void nm_device_set_managed (NMDevice *device,
NMDeviceStateReason reason);
void nm_device_set_dhcp_timeout (NMDevice *device, guint32 timeout);
+void nm_device_set_dhcp_anycast_address (NMDevice *device, guint8 *addr);
G_END_DECLS
--
1.6.4
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