CORE/SERVICES/COMMON/ipv4.h

/*
 * Copyright (c) 2012 The Linux Foundation. All rights reserved.
 *
 * Previously licensed under the ISC license by Qualcomm Atheros, Inc.
 *
 *
 * 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.
 */

/*
 * This file was originally distributed by Qualcomm Atheros, Inc.
 * under proprietary terms before Copyright ownership was assigned
 * to the Linux Foundation.
 */

#ifndef _IPV4__H_
#define _IPV4__H_

#if defined(ATH_TARGET)
#include <osapi.h>   /* A_UINT8 */
#else
#include <a_types.h> /* A_UINT8 */
#endif

#define IPV4_ADDR_LEN 4 /* bytes */
struct ipv4_hdr_t {
    A_UINT8 ver_hdrlen;       /* version and hdr length */
    A_UINT8 tos;              /* type of service */
    A_UINT8 len[2];           /* total length */
    A_UINT8 id[2];
    A_UINT8 flags_fragoff[2]; /* flags and fragment offset field */
    A_UINT8 ttl;              /* time to live */
    A_UINT8 protocol;
    A_UINT8 hdr_checksum[2];
    A_UINT8 src_addr[IPV4_ADDR_LEN];
    A_UINT8 dst_addr[IPV4_ADDR_LEN];
};

#define IPV4_HDR_LEN (sizeof(struct ipv4_hdr_t))
#define IPV4_HDR_OFFSET_PROTOCOL (offsetof(struct ipv4_hdr_t, protocol))
#define IPV4_HDR_OFFSET_DST_ADDR (offsetof(struct ipv4_hdr_t, dst_addr[0]))

#endif /* _IPV4__H_ */