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307f78f3ed
MFC after: 1 week Reviewed by: bz, emaste, hselasky, manu Differential Revision: https://reviews.freebsd.org/D33562
72 lines
2.3 KiB
C
72 lines
2.3 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2020-2021 The FreeBSD Foundation
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*
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* This software was developed by Björn Zeeb under sponsorship from
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* the FreeBSD Foundation.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _LINUXKPI_LINUX_TCP_H
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#define _LINUXKPI_LINUX_TCP_H
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#include <sys/types.h>
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#include <linux/skbuff.h>
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/* (u) unconfirmed structure field names; using FreeBSD's meanwhile. */
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struct tcphdr {
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uint16_t source; /* (u) */
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uint16_t dest; /* (u) */
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uint32_t th_seq; /* (u) */
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uint32_t th_ack; /* (u) */
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#if BYTE_ORDER == LITTLE_ENDIAN
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uint8_t th_x2:4, doff:4;
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#elif BYTE_ORDER == BIG_ENDIAN
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uint8_t doff:4, th_x2:4;
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#endif
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uint8_t th_flags; /* (u) */
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uint16_t th_win; /* (u) */
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uint16_t check;
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uint16_t th_urg; /* (u) */
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};
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static __inline struct tcphdr *
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tcp_hdr(struct sk_buff *skb)
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{
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return (struct tcphdr *)skb_transport_header(skb);
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}
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static __inline uint32_t
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tcp_hdrlen(struct sk_buff *skb)
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{
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struct tcphdr *th;
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th = tcp_hdr(skb);
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return (4 * th->doff);
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}
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#endif /* _LINUXKPI_LINUX_TCP_H */
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