zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/os/linux/linux-3.4.x/net/bridge/br.c b/ap/os/linux/linux-3.4.x/net/bridge/br.c
new file mode 100644
index 0000000..ba780cc
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/net/bridge/br.c
@@ -0,0 +1,107 @@
+/*
+ * Generic parts
+ * Linux ethernet bridge
+ *
+ * Authors:
+ * Lennert Buytenhek <buytenh@gnu.org>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/init.h>
+#include <linux/llc.h>
+#include <net/llc.h>
+#include <net/stp.h>
+
+#include "br_private.h"
+
+static const struct stp_proto br_stp_proto = {
+ .rcv = br_stp_rcv,
+};
+
+static struct pernet_operations br_net_ops = {
+ .exit = br_net_exit,
+};
+
+static int __init br_init(void)
+{
+ int err;
+
+ err = stp_proto_register(&br_stp_proto);
+ if (err < 0) {
+ pr_err("bridge: can't register sap for STP\n");
+ return err;
+ }
+
+ err = br_fdb_init();
+ if (err)
+ goto err_out;
+
+ err = register_pernet_subsys(&br_net_ops);
+ if (err)
+ goto err_out1;
+
+ err = br_netfilter_init();
+ if (err)
+ goto err_out2;
+
+ err = register_netdevice_notifier(&br_device_notifier);
+ if (err)
+ goto err_out3;
+
+ err = br_netlink_init();
+ if (err)
+ goto err_out4;
+
+ brioctl_set(br_ioctl_deviceless_stub);
+
+#if IS_ENABLED(CONFIG_ATM_LANE)
+ br_fdb_test_addr_hook = br_fdb_test_addr;
+#endif
+
+ return 0;
+err_out4:
+ unregister_netdevice_notifier(&br_device_notifier);
+err_out3:
+ br_netfilter_fini();
+err_out2:
+ unregister_pernet_subsys(&br_net_ops);
+err_out1:
+ br_fdb_fini();
+err_out:
+ stp_proto_unregister(&br_stp_proto);
+ return err;
+}
+
+static void __exit br_deinit(void)
+{
+ stp_proto_unregister(&br_stp_proto);
+
+ br_netlink_fini();
+ unregister_netdevice_notifier(&br_device_notifier);
+ brioctl_set(NULL);
+
+ unregister_pernet_subsys(&br_net_ops);
+
+ rcu_barrier(); /* Wait for completion of call_rcu()'s */
+
+ br_netfilter_fini();
+#if IS_ENABLED(CONFIG_ATM_LANE)
+ br_fdb_test_addr_hook = NULL;
+#endif
+
+ br_fdb_fini();
+}
+
+module_init(br_init)
+module_exit(br_deinit)
+MODULE_LICENSE("GPL");
+MODULE_VERSION(BR_VERSION);
+MODULE_ALIAS_RTNL_LINK("bridge");