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-rw-r--r--net/switchdev/switchdev.c190
1 files changed, 190 insertions, 0 deletions
diff --git a/net/switchdev/switchdev.c b/net/switchdev/switchdev.c
index 070698dd19bc..82dd4e4e86f5 100644
--- a/net/switchdev/switchdev.c
+++ b/net/switchdev/switchdev.c
@@ -378,6 +378,196 @@ int call_switchdev_blocking_notifiers(unsigned long val, struct net_device *dev,
}
EXPORT_SYMBOL_GPL(call_switchdev_blocking_notifiers);
+static int __switchdev_handle_fdb_add_to_device(struct net_device *dev,
+ const struct net_device *orig_dev,
+ const struct switchdev_notifier_fdb_info *fdb_info,
+ bool (*check_cb)(const struct net_device *dev),
+ bool (*foreign_dev_check_cb)(const struct net_device *dev,
+ const struct net_device *foreign_dev),
+ int (*add_cb)(struct net_device *dev,
+ const struct net_device *orig_dev, const void *ctx,
+ const struct switchdev_notifier_fdb_info *fdb_info),
+ int (*lag_add_cb)(struct net_device *dev,
+ const struct net_device *orig_dev, const void *ctx,
+ const struct switchdev_notifier_fdb_info *fdb_info))
+{
+ const struct switchdev_notifier_info *info = &fdb_info->info;
+ struct net_device *lower_dev;
+ struct list_head *iter;
+ int err = -EOPNOTSUPP;
+
+ if (check_cb(dev)) {
+ /* Handle FDB entries on foreign interfaces as FDB entries
+ * towards the software bridge.
+ */
+ if (foreign_dev_check_cb && foreign_dev_check_cb(dev, orig_dev)) {
+ struct net_device *br = netdev_master_upper_dev_get_rcu(dev);
+
+ if (!br || !netif_is_bridge_master(br))
+ return 0;
+
+ /* No point in handling FDB entries on a foreign bridge */
+ if (foreign_dev_check_cb(dev, br))
+ return 0;
+
+ return __switchdev_handle_fdb_add_to_device(br, orig_dev,
+ fdb_info, check_cb,
+ foreign_dev_check_cb,
+ add_cb, lag_add_cb);
+ }
+
+ return add_cb(dev, orig_dev, info->ctx, fdb_info);
+ }
+
+ /* If we passed over the foreign check, it means that the LAG interface
+ * is offloaded.
+ */
+ if (netif_is_lag_master(dev)) {
+ if (!lag_add_cb)
+ return -EOPNOTSUPP;
+
+ return lag_add_cb(dev, orig_dev, info->ctx, fdb_info);
+ }
+
+ /* Recurse through lower interfaces in case the FDB entry is pointing
+ * towards a bridge device.
+ */
+ netdev_for_each_lower_dev(dev, lower_dev, iter) {
+ /* Do not propagate FDB entries across bridges */
+ if (netif_is_bridge_master(lower_dev))
+ continue;
+
+ err = __switchdev_handle_fdb_add_to_device(lower_dev, orig_dev,
+ fdb_info, check_cb,
+ foreign_dev_check_cb,
+ add_cb, lag_add_cb);
+ if (err && err != -EOPNOTSUPP)
+ return err;
+ }
+
+ return err;
+}
+
+int switchdev_handle_fdb_add_to_device(struct net_device *dev,
+ const struct switchdev_notifier_fdb_info *fdb_info,
+ bool (*check_cb)(const struct net_device *dev),
+ bool (*foreign_dev_check_cb)(const struct net_device *dev,
+ const struct net_device *foreign_dev),
+ int (*add_cb)(struct net_device *dev,
+ const struct net_device *orig_dev, const void *ctx,
+ const struct switchdev_notifier_fdb_info *fdb_info),
+ int (*lag_add_cb)(struct net_device *dev,
+ const struct net_device *orig_dev, const void *ctx,
+ const struct switchdev_notifier_fdb_info *fdb_info))
+{
+ int err;
+
+ err = __switchdev_handle_fdb_add_to_device(dev, dev, fdb_info,
+ check_cb,
+ foreign_dev_check_cb,
+ add_cb, lag_add_cb);
+ if (err == -EOPNOTSUPP)
+ err = 0;
+
+ return err;
+}
+EXPORT_SYMBOL_GPL(switchdev_handle_fdb_add_to_device);
+
+static int __switchdev_handle_fdb_del_to_device(struct net_device *dev,
+ const struct net_device *orig_dev,
+ const struct switchdev_notifier_fdb_info *fdb_info,
+ bool (*check_cb)(const struct net_device *dev),
+ bool (*foreign_dev_check_cb)(const struct net_device *dev,
+ const struct net_device *foreign_dev),
+ int (*del_cb)(struct net_device *dev,
+ const struct net_device *orig_dev, const void *ctx,
+ const struct switchdev_notifier_fdb_info *fdb_info),
+ int (*lag_del_cb)(struct net_device *dev,
+ const struct net_device *orig_dev, const void *ctx,
+ const struct switchdev_notifier_fdb_info *fdb_info))
+{
+ const struct switchdev_notifier_info *info = &fdb_info->info;
+ struct net_device *lower_dev;
+ struct list_head *iter;
+ int err = -EOPNOTSUPP;
+
+ if (check_cb(dev)) {
+ /* Handle FDB entries on foreign interfaces as FDB entries
+ * towards the software bridge.
+ */
+ if (foreign_dev_check_cb && foreign_dev_check_cb(dev, orig_dev)) {
+ struct net_device *br = netdev_master_upper_dev_get_rcu(dev);
+
+ if (!br || !netif_is_bridge_master(br))
+ return 0;
+
+ /* No point in handling FDB entries on a foreign bridge */
+ if (foreign_dev_check_cb(dev, br))
+ return 0;
+
+ return __switchdev_handle_fdb_del_to_device(br, orig_dev,
+ fdb_info, check_cb,
+ foreign_dev_check_cb,
+ del_cb, lag_del_cb);
+ }
+
+ return del_cb(dev, orig_dev, info->ctx, fdb_info);
+ }
+
+ /* If we passed over the foreign check, it means that the LAG interface
+ * is offloaded.
+ */
+ if (netif_is_lag_master(dev)) {
+ if (!lag_del_cb)
+ return -EOPNOTSUPP;
+
+ return lag_del_cb(dev, orig_dev, info->ctx, fdb_info);
+ }
+
+ /* Recurse through lower interfaces in case the FDB entry is pointing
+ * towards a bridge device.
+ */
+ netdev_for_each_lower_dev(dev, lower_dev, iter) {
+ /* Do not propagate FDB entries across bridges */
+ if (netif_is_bridge_master(lower_dev))
+ continue;
+
+ err = switchdev_handle_fdb_del_to_device(lower_dev, fdb_info,
+ check_cb,
+ foreign_dev_check_cb,
+ del_cb, lag_del_cb);
+ if (err && err != -EOPNOTSUPP)
+ return err;
+ }
+
+ return err;
+}
+
+int switchdev_handle_fdb_del_to_device(struct net_device *dev,
+ const struct switchdev_notifier_fdb_info *fdb_info,
+ bool (*check_cb)(const struct net_device *dev),
+ bool (*foreign_dev_check_cb)(const struct net_device *dev,
+ const struct net_device *foreign_dev),
+ int (*del_cb)(struct net_device *dev,
+ const struct net_device *orig_dev, const void *ctx,
+ const struct switchdev_notifier_fdb_info *fdb_info),
+ int (*lag_del_cb)(struct net_device *dev,
+ const struct net_device *orig_dev, const void *ctx,
+ const struct switchdev_notifier_fdb_info *fdb_info))
+{
+ int err;
+
+ err = __switchdev_handle_fdb_del_to_device(dev, dev, fdb_info,
+ check_cb,
+ foreign_dev_check_cb,
+ del_cb, lag_del_cb);
+ if (err == -EOPNOTSUPP)
+ err = 0;
+
+ return err;
+}
+EXPORT_SYMBOL_GPL(switchdev_handle_fdb_del_to_device);
+
static int __switchdev_handle_port_obj_add(struct net_device *dev,
struct switchdev_notifier_port_obj_info *port_obj_info,
bool (*check_cb)(const struct net_device *dev),
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-12 11:58:43 +0100