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Work on bug #48728: headers should cleanly separate API vs. implementation
TCP
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@ -49,6 +49,7 @@
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#include "lwip/err.h"
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#include "lwip/ip6.h"
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#include "lwip/ip6_addr.h"
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#include "lwip/prot/tcp.h"
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#ifdef __cplusplus
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extern "C" {
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@ -122,9 +123,6 @@ err_t tcp_process_refused_data(struct tcp_pcb *pcb);
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#define TCP_FLAGS 0x3fU
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/* Length of the TCP header, excluding options. */
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#define TCP_HLEN 20
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#ifndef TCP_TMR_INTERVAL
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#define TCP_TMR_INTERVAL 250 /* The TCP timer interval in milliseconds. */
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#endif /* TCP_TMR_INTERVAL */
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@ -161,38 +159,6 @@ err_t tcp_process_refused_data(struct tcp_pcb *pcb);
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#define TCP_MAXIDLE TCP_KEEPCNT_DEFAULT * TCP_KEEPINTVL_DEFAULT /* Maximum KEEPALIVE probe time */
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/* Fields are (of course) in network byte order.
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* Some fields are converted to host byte order in tcp_input().
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*/
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#ifdef PACK_STRUCT_USE_INCLUDES
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# include "arch/bpstruct.h"
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#endif
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PACK_STRUCT_BEGIN
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struct tcp_hdr {
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PACK_STRUCT_FIELD(u16_t src);
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PACK_STRUCT_FIELD(u16_t dest);
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PACK_STRUCT_FIELD(u32_t seqno);
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PACK_STRUCT_FIELD(u32_t ackno);
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PACK_STRUCT_FIELD(u16_t _hdrlen_rsvd_flags);
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PACK_STRUCT_FIELD(u16_t wnd);
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PACK_STRUCT_FIELD(u16_t chksum);
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PACK_STRUCT_FIELD(u16_t urgp);
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} PACK_STRUCT_STRUCT;
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PACK_STRUCT_END
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#ifdef PACK_STRUCT_USE_INCLUDES
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# include "arch/epstruct.h"
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#endif
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#define TCPH_HDRLEN(phdr) ((u16_t)(ntohs((phdr)->_hdrlen_rsvd_flags) >> 12))
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#define TCPH_FLAGS(phdr) ((u16_t)(ntohs((phdr)->_hdrlen_rsvd_flags) & TCP_FLAGS))
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#define TCPH_HDRLEN_SET(phdr, len) (phdr)->_hdrlen_rsvd_flags = htons(((len) << 12) | TCPH_FLAGS(phdr))
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#define TCPH_FLAGS_SET(phdr, flags) (phdr)->_hdrlen_rsvd_flags = (((phdr)->_hdrlen_rsvd_flags & PP_HTONS(~TCP_FLAGS)) | htons(flags))
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#define TCPH_HDRLEN_FLAGS_SET(phdr, len, flags) (phdr)->_hdrlen_rsvd_flags = htons(((len) << 12) | (flags))
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#define TCPH_SET_FLAG(phdr, flags ) (phdr)->_hdrlen_rsvd_flags = ((phdr)->_hdrlen_rsvd_flags | htons(flags))
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#define TCPH_UNSET_FLAG(phdr, flags) (phdr)->_hdrlen_rsvd_flags = ((phdr)->_hdrlen_rsvd_flags & ~htons(flags))
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#define TCP_TCPLEN(seg) ((seg)->len + (((TCPH_FLAGS((seg)->tcphdr) & (TCP_FIN | TCP_SYN)) != 0) ? 1U : 0U))
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/** Flags used on input processing, not on pcb->flags
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85
src/include/lwip/prot/tcp.h
Normal file
85
src/include/lwip/prot/tcp.h
Normal file
@ -0,0 +1,85 @@
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/**
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* @file
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* TCP protocol definitions
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*/
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/*
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* Copyright (c) 2001-2004 Swedish Institute of Computer Science.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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* OF SUCH DAMAGE.
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*
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* This file is part of the lwIP TCP/IP stack.
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*
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* Author: Adam Dunkels <adam@sics.se>
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*
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*/
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#ifndef LWIP_HDR_PROT_TCP_H
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#define LWIP_HDR_PROT_TCP_H
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#include "lwip/arch.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Length of the TCP header, excluding options. */
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#define TCP_HLEN 20
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/* Fields are (of course) in network byte order.
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* Some fields are converted to host byte order in tcp_input().
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*/
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#ifdef PACK_STRUCT_USE_INCLUDES
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# include "arch/bpstruct.h"
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#endif
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PACK_STRUCT_BEGIN
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struct tcp_hdr {
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PACK_STRUCT_FIELD(u16_t src);
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PACK_STRUCT_FIELD(u16_t dest);
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PACK_STRUCT_FIELD(u32_t seqno);
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PACK_STRUCT_FIELD(u32_t ackno);
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PACK_STRUCT_FIELD(u16_t _hdrlen_rsvd_flags);
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PACK_STRUCT_FIELD(u16_t wnd);
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PACK_STRUCT_FIELD(u16_t chksum);
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PACK_STRUCT_FIELD(u16_t urgp);
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} PACK_STRUCT_STRUCT;
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PACK_STRUCT_END
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#ifdef PACK_STRUCT_USE_INCLUDES
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# include "arch/epstruct.h"
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#endif
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#define TCPH_HDRLEN(phdr) ((u16_t)(ntohs((phdr)->_hdrlen_rsvd_flags) >> 12))
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#define TCPH_FLAGS(phdr) ((u16_t)(ntohs((phdr)->_hdrlen_rsvd_flags) & TCP_FLAGS))
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#define TCPH_HDRLEN_SET(phdr, len) (phdr)->_hdrlen_rsvd_flags = htons(((len) << 12) | TCPH_FLAGS(phdr))
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#define TCPH_FLAGS_SET(phdr, flags) (phdr)->_hdrlen_rsvd_flags = (((phdr)->_hdrlen_rsvd_flags & PP_HTONS(~TCP_FLAGS)) | htons(flags))
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#define TCPH_HDRLEN_FLAGS_SET(phdr, len, flags) (phdr)->_hdrlen_rsvd_flags = htons(((len) << 12) | (flags))
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#define TCPH_SET_FLAG(phdr, flags ) (phdr)->_hdrlen_rsvd_flags = ((phdr)->_hdrlen_rsvd_flags | htons(flags))
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#define TCPH_UNSET_FLAG(phdr, flags) (phdr)->_hdrlen_rsvd_flags = ((phdr)->_hdrlen_rsvd_flags & ~htons(flags))
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#ifdef __cplusplus
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}
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#endif
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#endif /* LWIP_HDR_PROT_TCP_H */
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