/*
 * sfe_pppoe.h
 *	Shortcut flow acceleration for PPPoE flow
 *
 * Copyright (c) 2021-2022 Qualcomm Innovation Center, Inc. All rights reserved.
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#ifndef __SFE_PPPOE_H
#define __SFE_PPPOE_H

#include <linux/ppp_defs.h>
#include <linux/if_pppox.h>

struct sfe_ppp_hdr {
	u16 protocol;
};

/*
 * PPPoE (6-byte) + PPP (2-byte) header.
 */
#define SFE_PPPOE_SESSION_HEADER_SIZE 8

void sfe_pppoe_add_header(struct sk_buff *skb, u16 pppoe_session_id, u16 ppp_protocol);
bool sfe_pppoe_parse_hdr(struct sk_buff *skb, struct sfe_l2_info *l2_info);
void sfe_pppoe_undo_parse(struct sk_buff *skb, struct sfe_l2_info *l2_info);

#endif /* __SFE_PPPOE_H */