98 lines
3.4 KiB
C
Executable File
98 lines
3.4 KiB
C
Executable File
/*
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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_PACKET_H__
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#define __LWIP_PACKET_H__
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#include "opt.h"
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#if LWIP_PACKET /* don't build if not configured for use in lwipopts.h */
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#include "pbuf.h"
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#include "def.h"
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#include "netif/etharp.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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struct pkt_pcb;
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/** Function prototype for packet pcb receive callback functions.
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* @param arg user supplied argument (pkt_pcb.recv_arg)
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* @param pcb the pkt_pcb which received data
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* @param p the packet buffer that was received
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* @param addr the remote ethernet address from which the packet was received
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*
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* Note: the packet is never eaten by a packet PCB receive callback function.
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*/
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typedef void (*pkt_recv_fn)(void *arg, struct pkt_pcb *pcb, struct pbuf *p);
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struct pkt_pcb {
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struct pkt_pcb *next;
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/* network interface which was bound with */
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struct netif *netif;
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/* SOCK_RAW or not */
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u8_t is_raw;
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/* ethernet protocol ID, in network byte order */
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u16_t protocol;
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/** receive callback function */
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pkt_recv_fn recv;
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/* user-supplied argument for the recv callback */
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void *recv_arg;
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};
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/* The following functions is the application layer interface to the
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PACKET code. */
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struct pkt_pcb * pkt_new (u8_t is_raw, u16_t proto);
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void pkt_remove (struct pkt_pcb *pcb);
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err_t pkt_bind (struct pkt_pcb *pcb, int ifindex, u16_t proto);
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void pkt_recv (struct pkt_pcb *pcb, pkt_recv_fn recv, void *recv_arg);
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err_t pkt_sendto (struct pkt_pcb *pcb, struct pbuf *p, int ifindex, u16_t proto, u8_t *dst);
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err_t pkt_send (struct pkt_pcb *pcb, struct pbuf *p);
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/* The following functions are the lower layer interface to PACKET. */
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void pkt_input (struct pbuf *p, struct netif *inp, u16_t proto);
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#define pkt_init() /* Compatibility define, not init needed. */
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#ifdef __cplusplus
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}
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#endif
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#endif /* LWIP_PACKET */
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#endif /* __LWIP_PACKET_H__ */
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