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b92fe3eecb
Removed some calls from PPP core to PPPoS low level protocols, the const struct allows us to have more and more callbacks without using more RAM.
111 lines
3.9 KiB
C
111 lines
3.9 KiB
C
/**
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* @file
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* Network Point to Point Protocol over Serial header file.
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*
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*/
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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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*/
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#include "lwip/opt.h"
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#if PPP_SUPPORT && PPPOS_SUPPORT /* don't build if not configured for use in lwipopts.h */
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#ifndef PPPOS_H
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#define PPPOS_H
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#include "lwip/sys.h"
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#include "lwip/sio.h"
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#include "ppp.h"
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#include "vj.h"
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/* PPP packet parser states. Current state indicates operation yet to be
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* completed. */
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enum {
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PDIDLE = 0, /* Idle state - waiting. */
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PDSTART, /* Process start flag. */
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PDADDRESS, /* Process address field. */
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PDCONTROL, /* Process control field. */
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PDPROTOCOL1, /* Process protocol field 1. */
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PDPROTOCOL2, /* Process protocol field 2. */
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PDDATA /* Process data byte. */
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};
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/*
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* Extended asyncmap - allows any character to be escaped.
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*/
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typedef u_char ext_accm[32];
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/*
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* PPPoS interface control block.
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*/
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typedef struct pppos_pcb_s pppos_pcb;
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struct pppos_pcb_s {
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/* -- below are data that will NOT be cleared between two sessions */
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pppos_pcb *next;
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ppp_pcb *ppp; /* PPP PCB */
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sio_fd_t fd; /* File device ID of port. */
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/* -- below are data that will be cleared between two sessions
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*
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* out_accm must be the first member of cleared members, because it is
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* used to know which part must not be cleared.
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*/
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ext_accm out_accm; /* Async-Ctl-Char-Map for output. */
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/* PPPoS rx */
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ext_accm in_accm; /* Async-Ctl-Char-Map for input. */
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struct pbuf *in_head, *in_tail; /* The input packet. */
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#if VJ_SUPPORT
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struct vjcompress vj_comp; /* Van Jacobson compression header. */
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#endif /* VJ_SUPPORT */
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u16_t in_protocol; /* The input protocol code. */
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u16_t in_fcs; /* Input Frame Check Sequence value. */
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u8_t in_state; /* The input process state. */
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u8_t in_escaped; /* Escape next character. */
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};
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/* Create a new PPPoS session. */
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ppp_pcb *pppos_create(struct netif *pppif, sio_fd_t fd,
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ppp_link_status_cb_fn link_status_cb, void *ctx_cb);
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/* PPP over Serial: this is the input function to be called for received data. */
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void pppos_input(ppp_pcb *ppp, u_char* data, int len);
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/*
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* Functions called from PPP CORE
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*
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* You may use them if you REALLY know what you are doing.
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*/
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sio_fd_t pppos_get_fd(pppos_pcb *pppos);
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int pppos_vjc_comp(pppos_pcb *pppos, struct pbuf *pb);
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int pppos_vjc_uncomp(pppos_pcb *pppos, struct pbuf *pb);
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#endif /* PPPOS_H */
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#endif /* PPP_SUPPORT && PPPOL2TP_SUPPORT */
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