dhcp: merge branch 'bg/restart-dhcp-on-mac-change'

https://bugzilla.redhat.com/show_bug.cgi?id=2110000

https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/merge_requests/1343

(cherry picked from commit 7f40eb1b04762d63943b0c0e40c4a63af798d78e)

(cherry picked from commit 14633422e299ddbdc0067f4700113482735fdddc)

5 files changed, 17 insertions, 12 deletions

diff --git a/src/core/devices/nm-device-ethernet.c b/src/core/devices/nm-device-ethernet.c
index 32f2fbf9b4..40c6d208e1 100644
--- a/src/core/devices/nm-device-ethernet.c
+++ b/src/core/devices/nm-device-ethernet.c
@@ -451,7 +451,7 @@ supplicant_auth_state_changed(NMSupplicantInterface *iface,
 
     if (state == NM_SUPPLICANT_AUTH_STATE_SUCCESS) {
         nm_clear_g_signal_handler(priv->supplicant.iface, &priv->supplicant.iface_state_id);
-        nm_device_update_dynamic_ip_setup(NM_DEVICE(self));
+        nm_device_update_dynamic_ip_setup(NM_DEVICE(self), "supplicant auth state changed");
     }
 }
 
diff --git a/src/core/devices/nm-device.c b/src/core/devices/nm-device.c
index 6b854517e5..6c613c570b 100644
--- a/src/core/devices/nm-device.c
+++ b/src/core/devices/nm-device.c
@@ -6112,7 +6112,7 @@ _dev_unmanaged_check_external_down(NMDevice *self, gboolean only_if_unmanaged, g
 }
 
 void
-nm_device_update_dynamic_ip_setup(NMDevice *self)
+nm_device_update_dynamic_ip_setup(NMDevice *self, const char *reason)
 {
     NMDevicePrivate *priv;
 
@@ -6123,6 +6123,8 @@ nm_device_update_dynamic_ip_setup(NMDevice *self)
     if (priv->state < NM_DEVICE_STATE_IP_CONFIG || priv->state > NM_DEVICE_STATE_ACTIVATED)
         return;
 
+    _LOGD(LOGD_DEVICE, "restarting dynamic IP configuration (%s)", reason);
+
     g_hash_table_remove_all(priv->ip6_saved_properties);
 
     if (priv->ipdhcp_data_4.state != NM_DEVICE_IP_STATE_NONE)
@@ -6424,6 +6426,7 @@ device_link_changed(gpointer user_data)
     NMDeviceClass                  *klass             = NM_DEVICE_GET_CLASS(self);
     NMDevicePrivate                *priv              = NM_DEVICE_GET_PRIVATE(self);
     gboolean                        ip_ifname_changed = FALSE;
+    gboolean                        hw_addr_changed;
     nm_auto_nmpobj const NMPObject *pllink_keep_alive = NULL;
     const NMPlatformLink           *pllink;
     const char                     *str;
@@ -6470,9 +6473,9 @@ device_link_changed(gpointer user_data)
     if (ifindex == nm_device_get_ip_ifindex(self))
         _stats_update_counters_from_pllink(self, pllink);
 
-    had_hw_addr = (priv->hw_addr != NULL);
-    nm_device_update_hw_address(self);
-    got_hw_addr = (!had_hw_addr && priv->hw_addr);
+    had_hw_addr     = (priv->hw_addr != NULL);
+    hw_addr_changed = nm_device_update_hw_address(self);
+    got_hw_addr     = (!had_hw_addr && priv->hw_addr);
     nm_device_update_permanent_hw_address(self, FALSE);
 
     if (pllink->name[0] && !nm_streq(priv->iface, pllink->name)) {
@@ -6522,7 +6525,9 @@ device_link_changed(gpointer user_data)
 
     /* Update DHCP, etc, if needed */
     if (ip_ifname_changed)
-        nm_device_update_dynamic_ip_setup(self);
+        nm_device_update_dynamic_ip_setup(self, "IP interface changed");
+    else if (hw_addr_changed)
+        nm_device_update_dynamic_ip_setup(self, "hw-address changed");
 
     was_up   = priv->up;
     priv->up = NM_FLAGS_HAS(pllink->n_ifi_flags, IFF_UP);
@@ -6582,7 +6587,7 @@ device_link_changed(gpointer user_data)
          * renew DHCP leases and such.
          */
         if (priv->state == NM_DEVICE_STATE_ACTIVATED) {
-            nm_device_update_dynamic_ip_setup(self);
+            nm_device_update_dynamic_ip_setup(self, "interface got carrier");
         }
     }
 
@@ -6644,7 +6649,7 @@ device_ip_link_changed(gpointer user_data)
         priv->ip_iface_ = g_strdup(ip_iface);
         update_prop_ip_iface(self);
 
-        nm_device_update_dynamic_ip_setup(self);
+        nm_device_update_dynamic_ip_setup(self, "interface renamed");
     }
 
     return G_SOURCE_REMOVE;
diff --git a/src/core/devices/nm-device.h b/src/core/devices/nm-device.h
index d59aecb266..a9d1339e6b 100644
--- a/src/core/devices/nm-device.h
+++ b/src/core/devices/nm-device.h
@@ -757,7 +757,7 @@ void nm_device_update_metered(NMDevice *self);
 gboolean nm_device_update_hw_address(NMDevice *self);
 void     nm_device_update_initial_hw_address(NMDevice *self);
 void     nm_device_update_permanent_hw_address(NMDevice *self, gboolean force_freeze);
-void     nm_device_update_dynamic_ip_setup(NMDevice *self);
+void     nm_device_update_dynamic_ip_setup(NMDevice *self, const char *reason);
 guint    nm_device_get_supplicant_timeout(NMDevice *self);
 
 gboolean nm_device_auth_retries_try_next(NMDevice *self);
diff --git a/src/core/devices/wifi/nm-device-wifi.c b/src/core/devices/wifi/nm-device-wifi.c
index 04608d1485..958b7d9268 100644
--- a/src/core/devices/wifi/nm-device-wifi.c
+++ b/src/core/devices/wifi/nm-device-wifi.c
@@ -2520,7 +2520,7 @@ supplicant_iface_state(NMDeviceWifi              *self,
                 _LOGD(LOGD_WIFI,
                       "supplicant state settled after roaming, renew dynamic IP configuration");
                 nm_clear_g_source_inst(&priv->roam_supplicant_wait_source);
-                nm_device_update_dynamic_ip_setup(device);
+                nm_device_update_dynamic_ip_setup(device, "roamed to a different AP");
             }
         }
         break;
@@ -2663,7 +2663,7 @@ supplicant_iface_notify_current_bss(NMSupplicantInterface *iface,
 
             if (nm_supplicant_interface_get_state(priv->sup_iface)
                 == NM_SUPPLICANT_INTERFACE_STATE_COMPLETED) {
-                nm_device_update_dynamic_ip_setup(NM_DEVICE(self));
+                nm_device_update_dynamic_ip_setup(NM_DEVICE(self), "roamed to a different AP");
             } else {
                 /* Wait that the authentication to new the AP completes before
                  * trying to renew, otherwise the DHCP REQUEST could be lost
diff --git a/src/core/nm-manager.c b/src/core/nm-manager.c
index 521536979f..3ba7b454a9 100644
--- a/src/core/nm-manager.c
+++ b/src/core/nm-manager.c
@@ -6521,7 +6521,7 @@ do_sleep_wake(NMManager *self, gboolean sleeping_changed)
                 && !nm_device_get_unmanaged_flags(device, NM_UNMANAGED_SLEEPING)) {
                 /* DHCP leases of software devices could have gone stale
                  * so we need to renew them. */
-                nm_device_update_dynamic_ip_setup(device);
+                nm_device_update_dynamic_ip_setup(device, "wake up");
                 continue;
             }