// SPDX-License-Identifier: GPL-2.0-only
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/*
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* IEEE 802.1Q GARP VLAN Registration Protocol (GVRP)
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*
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* Copyright (c) 2008 Patrick McHardy <kaber@trash.net>
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*/
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#include <linux/types.h>
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#include <linux/if_vlan.h>
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#include <net/garp.h>
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#include "vlan.h"
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#define GARP_GVRP_ADDRESS { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x21 }
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enum gvrp_attributes {
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GVRP_ATTR_INVALID,
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GVRP_ATTR_VID,
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__GVRP_ATTR_MAX
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};
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#define GVRP_ATTR_MAX (__GVRP_ATTR_MAX - 1)
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static struct garp_application vlan_gvrp_app __read_mostly = {
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.proto.group_address = GARP_GVRP_ADDRESS,
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.maxattr = GVRP_ATTR_MAX,
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.type = GARP_APPLICATION_GVRP,
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};
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int vlan_gvrp_request_join(const struct net_device *dev)
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{
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const struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
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__be16 vlan_id = htons(vlan->vlan_id);
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if (vlan->vlan_proto != htons(ETH_P_8021Q))
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return 0;
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return garp_request_join(vlan->real_dev, &vlan_gvrp_app,
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&vlan_id, sizeof(vlan_id), GVRP_ATTR_VID);
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}
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void vlan_gvrp_request_leave(const struct net_device *dev)
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{
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const struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
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__be16 vlan_id = htons(vlan->vlan_id);
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if (vlan->vlan_proto != htons(ETH_P_8021Q))
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return;
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garp_request_leave(vlan->real_dev, &vlan_gvrp_app,
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&vlan_id, sizeof(vlan_id), GVRP_ATTR_VID);
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}
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int vlan_gvrp_init_applicant(struct net_device *dev)
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{
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return garp_init_applicant(dev, &vlan_gvrp_app);
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}
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void vlan_gvrp_uninit_applicant(struct net_device *dev)
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{
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garp_uninit_applicant(dev, &vlan_gvrp_app);
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}
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int __init vlan_gvrp_init(void)
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{
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return garp_register_application(&vlan_gvrp_app);
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}
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void vlan_gvrp_uninit(void)
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{
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garp_unregister_application(&vlan_gvrp_app);
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}
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