vlan.c

/*
 * Copyright (c) 2007-2011 Nicira, Inc.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of version 2 of the GNU General Public
 * License as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301, USA
 */

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#include <linux/if_vlan.h>
#include <linux/skbuff.h>

#include "datapath.h"
#include "vlan.h"

#ifdef NEED_VLAN_FIELD
void vlan_copy_skb_tci(struct sk_buff *skb)
{
	OVS_CB(skb)->vlan_tci = 0;
}

u16 vlan_get_tci(struct sk_buff *skb)
{
	return OVS_CB(skb)->vlan_tci;
}

void vlan_set_tci(struct sk_buff *skb, u16 vlan_tci)
{
	OVS_CB(skb)->vlan_tci = vlan_tci;
}

bool vlan_tx_tag_present(struct sk_buff *skb)
{
	return OVS_CB(skb)->vlan_tci & VLAN_TAG_PRESENT;
}

u16 vlan_tx_tag_get(struct sk_buff *skb)
{
	return OVS_CB(skb)->vlan_tci & ~VLAN_TAG_PRESENT;
}

struct sk_buff *__vlan_hwaccel_put_tag(struct sk_buff *skb, u16 vlan_tci)
{
	OVS_CB(skb)->vlan_tci = vlan_tci | VLAN_TAG_PRESENT;
	return skb;
}
#endif /* NEED_VLAN_FIELD */