dhd_ip.h

/*
 * Header file describing the common ip parser function.
 *
 * Provides type definitions and function prototypes used to parse ip packet.
 *
 * Copyright 1999-2016, Broadcom Corporation
 * All rights reserved,
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *    1. Redistributions of source code must retain the above copyright notice,
 *       this list of conditions and the following disclaimer.
 *    2. Redistributions in binary form must reproduce the above copyright notice,
 *       this list of conditions and the following disclaimer in the documentation
 *       and/or other materials provided with the distribution.
 *
 * This software is provided by the copyright holder "as is" and any express or
 * implied warranties, including, but not limited to, the implied warranties of
 * merchantability and fitness for a particular purpose are disclaimed. In no event
 * shall copyright holder be liable for any direct, indirect, incidental, special,
 * exemplary, or consequential damages (including, but not limited to, procurement
 * of substitute goods or services; loss of use, data, or profits; or business
 * interruption) however caused and on any theory of liability, whether in
 * contract, strict liability, or tort (including negligence or otherwise) arising
 * in any way out of the use of this software, even if advised of the possibility
 * of such damage
 *
 *
 * <<Broadcom-WL-IPTag/Open:>>
 *
 * $Id: dhd_ip.h 537119 2015-02-25 04:24:14Z $
 */

#ifndef _dhd_ip_h_
#define _dhd_ip_h_

#ifdef DHDTCPACK_SUPPRESS
#include <dngl_stats.h>
#include <bcmutils.h>
#include <dhd.h>
#endif /* DHDTCPACK_SUPPRESS */

typedef enum pkt_frag
{
	DHD_PKT_FRAG_NONE = 0,
	DHD_PKT_FRAG_FIRST,
	DHD_PKT_FRAG_CONT,
	DHD_PKT_FRAG_LAST
} pkt_frag_t;

extern pkt_frag_t pkt_frag_info(osl_t *osh, void *p);

#ifdef DHDTCPACK_SUPPRESS
#define	TCPACKSZMIN	(ETHER_HDR_LEN + IPV4_MIN_HEADER_LEN + TCP_MIN_HEADER_LEN)
/* Size of MAX possible TCP ACK packet. Extra bytes for IP/TCP option fields */
#define	TCPACKSZMAX	(TCPACKSZMIN + 100)

/* Max number of TCP streams that have own src/dst IP addrs and TCP ports */
#define TCPACK_INFO_MAXNUM 4
#define TCPDATA_INFO_MAXNUM 4
#define TCPDATA_PSH_INFO_MAXNUM (8 * TCPDATA_INFO_MAXNUM)

#define TCPDATA_INFO_TIMEOUT 5000	/* Remove tcpdata_info if inactive for this time (in ms) */

#define DEFAULT_TCPACK_SUPP_RATIO 3
#ifndef CUSTOM_TCPACK_SUPP_RATIO
#define CUSTOM_TCPACK_SUPP_RATIO DEFAULT_TCPACK_SUPP_RATIO
#endif /* CUSTOM_TCPACK_SUPP_RATIO */

#define DEFAULT_TCPACK_DELAY_TIME 10 /* ms */
#ifndef CUSTOM_TCPACK_DELAY_TIME
#define CUSTOM_TCPACK_DELAY_TIME DEFAULT_TCPACK_DELAY_TIME
#endif /* CUSTOM_TCPACK_DELAY_TIME */

extern int dhd_tcpack_suppress_set(dhd_pub_t *dhdp, uint8 on);
extern void dhd_tcpack_info_tbl_clean(dhd_pub_t *dhdp);
extern int dhd_tcpack_check_xmit(dhd_pub_t *dhdp, void *pkt);
extern bool dhd_tcpack_suppress(dhd_pub_t *dhdp, void *pkt);
extern bool dhd_tcpdata_info_get(dhd_pub_t *dhdp, void *pkt);
extern bool dhd_tcpack_hold(dhd_pub_t *dhdp, void *pkt, int ifidx);
/* #define DHDTCPACK_SUP_DBG */
#if defined(DEBUG_COUNTER) && defined(DHDTCPACK_SUP_DBG)
extern counter_tbl_t tack_tbl;
#endif /* DEBUG_COUNTER && DHDTCPACK_SUP_DBG */
#endif /* DHDTCPACK_SUPPRESS */

#endif /* _dhd_ip_h_ */