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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_NETIF_H__
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#define __LWIP_NETIF_H__
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#include "lwip/opt.h"
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#define ENABLE_LOOPBACK (LWIP_NETIF_LOOPBACK || LWIP_HAVE_LOOPIF)
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#include "lwip/err.h"
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#include "lwip/ip_addr.h"
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#include "lwip/def.h"
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#include "lwip/pbuf.h"
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#if LWIP_DHCP
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struct dhcp;
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#endif
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#if LWIP_AUTOIP
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struct autoip;
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Throughout this file, IP addresses are expected to be in
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* the same byte order as in IP_PCB. */
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/* must be the maximum of all used hardware address lengths
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across all types of interfaces in use */
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#define NETIF_MAX_HWADDR_LEN 6U
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/* Whether the network interface is 'up'. This is
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* a software flag used to control whether this network
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* interface is enabled and processes traffic.
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* It is set by the startup code (for static IP configuration) or
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* by dhcp/autoip when an address has been assigned.
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*/
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#define NETIF_FLAG_UP 0x01U
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/* If set, the netif has broadcast capability.
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* Set by the netif driver in its init function. */
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#define NETIF_FLAG_BROADCAST 0x02U
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/* If set, the netif is one end of a point-to-point connection.
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* Set by the netif driver in its init function. */
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#define NETIF_FLAG_POINTTOPOINT 0x04U
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/* If set, the interface is configured using DHCP.
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* Set by the DHCP code when starting or stopping DHCP. */
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#define NETIF_FLAG_DHCP 0x08U
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/* If set, the interface has an active link
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* (set by the network interface driver).
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* Either set by the netif driver in its init function (if the link
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* is up at that time) or at a later point once the link comes up
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* (if link detection is supported by the hardware). */
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#define NETIF_FLAG_LINK_UP 0x10U
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/* If set, the netif is an ethernet device using ARP.
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* Set by the netif driver in its init function.
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* Used to check input packet types and use of DHCP. */
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#define NETIF_FLAG_ETHARP 0x20U
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/* If set, the netif is an ethernet device. It might not use
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* ARP or TCP/IP if it is used for PPPoE only.
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*/
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#define NETIF_FLAG_ETHERNET 0x40U
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/* If set, the netif has IGMP capability.
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* Set by the netif driver in its init function. */
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#define NETIF_FLAG_IGMP 0x80U
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/* Function prototype for netif init functions. Set up flags and output/linkoutput
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* callback functions in this function.
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*
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* @param netif The netif to initialize
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*/
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typedef err_t (*netif_init_fn)(struct netif *netif);
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/* Function prototype for netif->input functions. This function is saved as 'input'
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* callback function in the netif struct. Call it when a packet has been received.
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*
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* @param p The received packet, copied into a pbuf
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* @param inp The netif which received the packet
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*/
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typedef err_t (*netif_input_fn)(struct pbuf *p, struct netif *inp);
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/* Function prototype for netif->output functions. Called by lwIP when a packet
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* shall be sent. For ethernet netif, set this to 'etharp_output' and set
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* 'linkoutput'.
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*
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* @param netif The netif which shall send a packet
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* @param p The packet to send (p->payload points to IP header)
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* @param ipaddr The IP address to which the packet shall be sent
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*/
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typedef err_t (*netif_output_fn)(struct netif *netif, struct pbuf *p,
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ip_addr_t *ipaddr);
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/* Function prototype for netif->linkoutput functions. Only used for ethernet
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* netifs. This function is called by ARP when a packet shall be sent.
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*
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* @param netif The netif which shall send a packet
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* @param p The packet to send (raw ethernet packet)
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*/
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typedef err_t (*netif_linkoutput_fn)(struct netif *netif, struct pbuf *p);
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/* Function prototype for netif status- or link-callback functions. */
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typedef void (*netif_status_callback_fn)(struct netif *netif);
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/* Function prototype for netif igmp_mac_filter functions */
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typedef err_t (*netif_igmp_mac_filter_fn)(struct netif *netif,
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ip_addr_t *group, u8_t action);
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/* Generic data structure used for all lwIP network interfaces.
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* The following fields should be filled in by the initialization
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* function for the device driver: hwaddr_len, hwaddr[], mtu, flags */
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struct netif {
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/* pointer to next in linked list */
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struct netif *next;
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/* IP address configuration in network byte order */
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ip_addr_t ip_addr;
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ip_addr_t netmask;
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ip_addr_t gw;
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/* This function is called by the network device driver
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* to pass a packet up the TCP/IP stack. */
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netif_input_fn input;
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/* This function is called by the IP module when it wants
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* to send a packet on the interface. This function typically
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* first resolves the hardware address, then sends the packet. */
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netif_output_fn output;
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/* This function is called by the ARP module when it wants
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* to send a packet on the interface. This function outputs
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* the pbuf as-is on the link medium. */
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netif_linkoutput_fn linkoutput;
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#if LWIP_NETIF_STATUS_CALLBACK
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/* This function is called when the netif state is set to up or down
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*/
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netif_status_callback_fn status_callback;
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#endif /* LWIP_NETIF_STATUS_CALLBACK */
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#if LWIP_NETIF_LINK_CALLBACK
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/* This function is called when the netif link is set to up or down
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*/
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netif_status_callback_fn link_callback;
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165
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#endif /* LWIP_NETIF_LINK_CALLBACK */
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/* This field can be set by the device driver and could point
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* to state information for the device. */
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void *state;
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169
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#if LWIP_DHCP
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/* the DHCP client state information for this netif */
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struct dhcp *dhcp;
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#endif /* LWIP_DHCP */
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#if LWIP_AUTOIP
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/* the AutoIP client state information for this netif */
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struct autoip *autoip;
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#endif
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#if LWIP_NETIF_HOSTNAME
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/* the hostname for this netif, NULL is a valid value */
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char* hostname;
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#endif /* LWIP_NETIF_HOSTNAME */
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181
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/* maximum transfer unit (in bytes) */
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u16_t mtu;
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183
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/* number of bytes used in hwaddr */
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u8_t hwaddr_len;
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/* link level hardware address of this interface */
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186
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u8_t hwaddr[NETIF_MAX_HWADDR_LEN];
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187
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/* flags (see NETIF_FLAG_ above) */
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188
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u8_t flags;
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189
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/* descriptive abbreviation */
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190
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char name[2];
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191
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/* number of this interface */
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192
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u8_t num;
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193
|
#if LWIP_SNMP
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194
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/* link type (from "snmp_ifType" enum from snmp.h) */
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195
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u8_t link_type;
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196
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/* (estimate) link speed */
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197
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u32_t link_speed;
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198
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/* timestamp at last change made (up/down) */
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199
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u32_t ts;
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200
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/* counters */
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201
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u32_t ifinoctets;
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202
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u32_t ifinucastpkts;
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203
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u32_t ifinnucastpkts;
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204
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u32_t ifindiscards;
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205
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u32_t ifoutoctets;
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206
|
u32_t ifoutucastpkts;
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207
|
u32_t ifoutnucastpkts;
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208
|
u32_t ifoutdiscards;
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209
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#endif /* LWIP_SNMP */
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210
|
#if LWIP_IGMP
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211
|
/* This function could be called to add or delete a entry in the multicast
|
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212
|
filter table of the ethernet MAC.*/
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213
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netif_igmp_mac_filter_fn igmp_mac_filter;
|
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214
|
#endif /* LWIP_IGMP */
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215
|
#if LWIP_NETIF_HWADDRHINT
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216
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u8_t *addr_hint;
|
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217
|
#endif /* LWIP_NETIF_HWADDRHINT */
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218
|
#if ENABLE_LOOPBACK
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219
|
/* List of packets to be queued for ourselves. */
|
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220
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struct pbuf *loop_first;
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221
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struct pbuf *loop_last;
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222
|
#if LWIP_LOOPBACK_MAX_PBUFS
|
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223
|
u16_t loop_cnt_current;
|
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224
|
#endif /* LWIP_LOOPBACK_MAX_PBUFS */
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225
|
#endif /* ENABLE_LOOPBACK */
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226
|
};
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|
227
|
|
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228
|
#if LWIP_SNMP
|
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229
|
#define NETIF_INIT_SNMP(netif, type, speed) \
|
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230
|
/* use "snmp_ifType" enum from snmp.h for "type", snmp_ifType_ethernet_csmacd by example */ \
|
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|
231
|
(netif)->link_type = (type); \
|
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232
|
/* your link speed here (units: bits per second) */ \
|
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|
233
|
(netif)->link_speed = (speed); \
|
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|
234
|
(netif)->ts = 0; \
|
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235
|
(netif)->ifinoctets = 0; \
|
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|
236
|
(netif)->ifinucastpkts = 0; \
|
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|
237
|
(netif)->ifinnucastpkts = 0; \
|
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0:58c3d014a4e7
|
238
|
(netif)->ifindiscards = 0; \
|
| slowness |
0:58c3d014a4e7
|
239
|
(netif)->ifoutoctets = 0; \
|
| slowness |
0:58c3d014a4e7
|
240
|
(netif)->ifoutucastpkts = 0; \
|
| slowness |
0:58c3d014a4e7
|
241
|
(netif)->ifoutnucastpkts = 0; \
|
| slowness |
0:58c3d014a4e7
|
242
|
(netif)->ifoutdiscards = 0
|
| slowness |
0:58c3d014a4e7
|
243
|
#else /* LWIP_SNMP */
|
| slowness |
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|
244
|
#define NETIF_INIT_SNMP(netif, type, speed)
|
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0:58c3d014a4e7
|
245
|
#endif /* LWIP_SNMP */
|
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|
246
|
|
| slowness |
0:58c3d014a4e7
|
247
|
|
| slowness |
0:58c3d014a4e7
|
248
|
/* The list of network interfaces. */
|
| slowness |
0:58c3d014a4e7
|
249
|
extern struct netif *netif_list;
|
| slowness |
0:58c3d014a4e7
|
250
|
/* The default network interface. */
|
| slowness |
0:58c3d014a4e7
|
251
|
extern struct netif *netif_default;
|
| slowness |
0:58c3d014a4e7
|
252
|
|
| slowness |
0:58c3d014a4e7
|
253
|
void netif_init(void);
|
| slowness |
0:58c3d014a4e7
|
254
|
|
| slowness |
0:58c3d014a4e7
|
255
|
struct netif *netif_add(struct netif *netif, ip_addr_t *ipaddr, ip_addr_t *netmask,
|
| slowness |
0:58c3d014a4e7
|
256
|
ip_addr_t *gw, void *state, netif_init_fn init, netif_input_fn input);
|
| slowness |
0:58c3d014a4e7
|
257
|
|
| slowness |
0:58c3d014a4e7
|
258
|
void
|
| slowness |
0:58c3d014a4e7
|
259
|
netif_set_addr(struct netif *netif, ip_addr_t *ipaddr, ip_addr_t *netmask,
|
| slowness |
0:58c3d014a4e7
|
260
|
ip_addr_t *gw);
|
| slowness |
0:58c3d014a4e7
|
261
|
void netif_remove(struct netif * netif);
|
| slowness |
0:58c3d014a4e7
|
262
|
|
| slowness |
0:58c3d014a4e7
|
263
|
/* Returns a network interface given its name. The name is of the form
|
| slowness |
0:58c3d014a4e7
|
264
|
"et0", where the first two letters are the "name" field in the
|
| slowness |
0:58c3d014a4e7
|
265
|
netif structure, and the digit is in the num field in the same
|
| slowness |
0:58c3d014a4e7
|
266
|
structure. */
|
| slowness |
0:58c3d014a4e7
|
267
|
struct netif *netif_find(char *name);
|
| slowness |
0:58c3d014a4e7
|
268
|
|
| slowness |
0:58c3d014a4e7
|
269
|
void netif_set_default(struct netif *netif);
|
| slowness |
0:58c3d014a4e7
|
270
|
|
| slowness |
0:58c3d014a4e7
|
271
|
void netif_set_ipaddr(struct netif *netif, ip_addr_t *ipaddr);
|
| slowness |
0:58c3d014a4e7
|
272
|
void netif_set_netmask(struct netif *netif, ip_addr_t *netmask);
|
| slowness |
0:58c3d014a4e7
|
273
|
void netif_set_gw(struct netif *netif, ip_addr_t *gw);
|
| slowness |
0:58c3d014a4e7
|
274
|
|
| slowness |
0:58c3d014a4e7
|
275
|
void netif_set_up(struct netif *netif);
|
| slowness |
0:58c3d014a4e7
|
276
|
void netif_set_down(struct netif *netif);
|
| slowness |
0:58c3d014a4e7
|
277
|
/* Ask if an interface is up */
|
| slowness |
0:58c3d014a4e7
|
278
|
#define netif_is_up(netif) (((netif)->flags & NETIF_FLAG_UP) ? (u8_t)1 : (u8_t)0)
|
| slowness |
0:58c3d014a4e7
|
279
|
|
| slowness |
0:58c3d014a4e7
|
280
|
#if LWIP_NETIF_STATUS_CALLBACK
|
| slowness |
0:58c3d014a4e7
|
281
|
void netif_set_status_callback(struct netif *netif, netif_status_callback_fn status_callback);
|
| slowness |
0:58c3d014a4e7
|
282
|
#endif /* LWIP_NETIF_STATUS_CALLBACK */
|
| slowness |
0:58c3d014a4e7
|
283
|
|
| slowness |
0:58c3d014a4e7
|
284
|
void netif_set_link_up(struct netif *netif);
|
| slowness |
0:58c3d014a4e7
|
285
|
void netif_set_link_down(struct netif *netif);
|
| slowness |
0:58c3d014a4e7
|
286
|
/* Ask if a link is up */
|
| slowness |
0:58c3d014a4e7
|
287
|
#define netif_is_link_up(netif) (((netif)->flags & NETIF_FLAG_LINK_UP) ? (u8_t)1 : (u8_t)0)
|
| slowness |
0:58c3d014a4e7
|
288
|
|
| slowness |
0:58c3d014a4e7
|
289
|
#if LWIP_NETIF_LINK_CALLBACK
|
| slowness |
0:58c3d014a4e7
|
290
|
void netif_set_link_callback(struct netif *netif, netif_status_callback_fn link_callback);
|
| slowness |
0:58c3d014a4e7
|
291
|
#endif /* LWIP_NETIF_LINK_CALLBACK */
|
| slowness |
0:58c3d014a4e7
|
292
|
|
| slowness |
0:58c3d014a4e7
|
293
|
#if LWIP_NETIF_HOSTNAME
|
| slowness |
0:58c3d014a4e7
|
294
|
#define netif_set_hostname(netif, name) do { if((netif) != NULL) { (netif)->hostname = name; }}while(0)
|
| slowness |
0:58c3d014a4e7
|
295
|
#define netif_get_hostname(netif) (((netif) != NULL) ? ((netif)->hostname) : NULL)
|
| slowness |
0:58c3d014a4e7
|
296
|
#endif /* LWIP_NETIF_HOSTNAME */
|
| slowness |
0:58c3d014a4e7
|
297
|
|
| slowness |
0:58c3d014a4e7
|
298
|
#if LWIP_IGMP
|
| slowness |
0:58c3d014a4e7
|
299
|
#define netif_set_igmp_mac_filter(netif, function) do { if((netif) != NULL) { (netif)->igmp_mac_filter = function; }}while(0)
|
| slowness |
0:58c3d014a4e7
|
300
|
#define netif_get_igmp_mac_filter(netif) (((netif) != NULL) ? ((netif)->igmp_mac_filter) : NULL)
|
| slowness |
0:58c3d014a4e7
|
301
|
#endif /* LWIP_IGMP */
|
| slowness |
0:58c3d014a4e7
|
302
|
|
| slowness |
0:58c3d014a4e7
|
303
|
#if ENABLE_LOOPBACK
|
| slowness |
0:58c3d014a4e7
|
304
|
err_t netif_loop_output(struct netif *netif, struct pbuf *p, ip_addr_t *dest_ip);
|
| slowness |
0:58c3d014a4e7
|
305
|
void netif_poll(struct netif *netif);
|
| slowness |
0:58c3d014a4e7
|
306
|
#if !LWIP_NETIF_LOOPBACK_MULTITHREADING
|
| slowness |
0:58c3d014a4e7
|
307
|
void netif_poll_all(void);
|
| slowness |
0:58c3d014a4e7
|
308
|
#endif /* !LWIP_NETIF_LOOPBACK_MULTITHREADING */
|
| slowness |
0:58c3d014a4e7
|
309
|
#endif /* ENABLE_LOOPBACK */
|
| slowness |
0:58c3d014a4e7
|
310
|
|
| slowness |
0:58c3d014a4e7
|
311
|
#ifdef __cplusplus
|
| slowness |
0:58c3d014a4e7
|
312
|
}
|
| slowness |
0:58c3d014a4e7
|
313
|
#endif
|
| slowness |
0:58c3d014a4e7
|
314
|
|
| slowness |
0:58c3d014a4e7
|
315
|
#endif /* __LWIP_NETIF_H__ */
|
bruno LARNAUDIE