324 lines
12 KiB
C
324 lines
12 KiB
C
/*
|
||
* Copyright (c) 2001-2004 Swedish Institute of Computer Science.
|
||
* All rights reserved.
|
||
*
|
||
* Redistribution and use in source and binary forms, with or without modification,
|
||
* are permitted provided that the following conditions are met:
|
||
*
|
||
* 1. Redistributions of source code must retain the above copyright notice,
|
||
* this list of conditions and the following disclaimer.
|
||
* 2. Redistributions in binary form must reproduce the above copyright notice,
|
||
* this list of conditions and the following disclaimer in the documentation
|
||
* and/or other materials provided with the distribution.
|
||
* 3. The name of the author may not be used to endorse or promote products
|
||
* derived from this software without specific prior written permission.
|
||
*
|
||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
|
||
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
||
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
|
||
* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
|
||
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
|
||
* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
||
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
||
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
|
||
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
|
||
* OF SUCH DAMAGE.
|
||
*
|
||
* This file is part of the lwIP TCP/IP stack.
|
||
*
|
||
* Author: Adam Dunkels <adam@sics.se>
|
||
*
|
||
*/
|
||
#ifndef __LWIP_NETIF_H__
|
||
#define __LWIP_NETIF_H__
|
||
|
||
#include "lwip/opt.h"
|
||
|
||
#define ENABLE_LOOPBACK (LWIP_NETIF_LOOPBACK || LWIP_HAVE_LOOPIF)
|
||
|
||
#include "lwip/err.h"
|
||
|
||
#include "lwip/ip_addr.h"
|
||
|
||
#include "lwip/def.h"
|
||
#include "lwip/pbuf.h"
|
||
#if LWIP_DHCP
|
||
struct dhcp;
|
||
#endif
|
||
#if LWIP_AUTOIP
|
||
struct autoip;
|
||
#endif
|
||
|
||
#ifdef __cplusplus
|
||
extern "C" {
|
||
#endif
|
||
|
||
/* Throughout this file, IP addresses are expected to be in
|
||
* the same byte order as in IP_PCB. */
|
||
|
||
/** must be the maximum of all used hardware address lengths
|
||
across all types of interfaces in use */
|
||
#define NETIF_MAX_HWADDR_LEN 6U
|
||
|
||
/** Whether the network interface is 'up'. This is
|
||
* a software flag used to control whether this network
|
||
* interface is enabled and processes traffic.
|
||
* It is set by the startup code (for static IP configuration) or
|
||
* by dhcp/autoip when an address has been assigned.
|
||
*/
|
||
#define NETIF_FLAG_UP 0x01U
|
||
/** If set, the netif has broadcast capability.
|
||
* Set by the netif driver in its init function. */
|
||
#define NETIF_FLAG_BROADCAST 0x02U
|
||
/** If set, the netif is one end of a point-to-point connection.
|
||
* Set by the netif driver in its init function. */
|
||
#define NETIF_FLAG_POINTTOPOINT 0x04U
|
||
/** If set, the interface is configured using DHCP.
|
||
* Set by the DHCP code when starting or stopping DHCP. */
|
||
#define NETIF_FLAG_DHCP 0x08U
|
||
/** If set, the interface has an active link
|
||
* (set by the network interface driver).
|
||
* Either set by the netif driver in its init function (if the link
|
||
* is up at that time) or at a later point once the link comes up
|
||
* (if link detection is supported by the hardware). */
|
||
#define NETIF_FLAG_LINK_UP 0x10U
|
||
/** If set, the netif is an ethernet device using ARP.
|
||
* Set by the netif driver in its init function.
|
||
* Used to check input packet types and use of DHCP. */
|
||
#define NETIF_FLAG_ETHARP 0x20U
|
||
/** If set, the netif is an ethernet device. It might not use
|
||
* ARP or TCP/IP if it is used for PPPoE only.
|
||
*/
|
||
#define NETIF_FLAG_ETHERNET 0x40U
|
||
/** If set, the netif has IGMP capability.
|
||
* Set by the netif driver in its init function. */
|
||
#define NETIF_FLAG_IGMP 0x80U
|
||
|
||
/** Function prototype for netif init functions. Set up flags and output/linkoutput
|
||
* callback functions in this function.
|
||
*
|
||
* @param netif The netif to initialize
|
||
*/
|
||
typedef err_t (*netif_init_fn)(struct netif *netif);
|
||
/** Function prototype for netif->input functions. This function is saved as 'input'
|
||
* callback function in the netif struct. Call it when a packet has been received.
|
||
*
|
||
* @param p The received packet, copied into a pbuf
|
||
* @param inp The netif which received the packet
|
||
*/
|
||
typedef err_t (*netif_input_fn)(struct pbuf *p, struct netif *inp);
|
||
/** Function prototype for netif->output functions. Called by lwIP when a packet
|
||
* shall be sent. For ethernet netif, set this to 'etharp_output' and set
|
||
* 'linkoutput'.
|
||
*
|
||
* @param netif The netif which shall send a packet
|
||
* @param p The packet to send (p->payload points to IP header)
|
||
* @param ipaddr The IP address to which the packet shall be sent
|
||
*/
|
||
typedef err_t (*netif_output_fn)(struct netif *netif, struct pbuf *p,
|
||
ip_addr_t *ipaddr);
|
||
/** Function prototype for netif->linkoutput functions. Only used for ethernet
|
||
* netifs. This function is called by ARP when a packet shall be sent.
|
||
*
|
||
* @param netif The netif which shall send a packet
|
||
* @param p The packet to send (raw ethernet packet)
|
||
*/
|
||
typedef err_t (*netif_linkoutput_fn)(struct netif *netif, struct pbuf *p);
|
||
/** Function prototype for netif status- or link-callback functions. */
|
||
typedef void (*netif_status_callback_fn)(struct netif *netif);
|
||
/** Function prototype for netif igmp_mac_filter functions */
|
||
typedef err_t (*netif_igmp_mac_filter_fn)(struct netif *netif,
|
||
ip_addr_t *group, u8_t action);
|
||
|
||
/*add DHCP event processing by LiuHan*/
|
||
typedef void (*dhcp_event_fn)(void);
|
||
|
||
/** Generic data structure used for all lwIP network interfaces.
|
||
* The following fields should be filled in by the initialization
|
||
* function for the device driver: hwaddr_len, hwaddr[], mtu, flags */
|
||
struct netif {
|
||
/** pointer to next in linked list */
|
||
struct netif *next;
|
||
|
||
/** IP address configuration in network byte order */
|
||
ip_addr_t ip_addr;
|
||
ip_addr_t netmask;
|
||
ip_addr_t gw;
|
||
|
||
/** This function is called by the network device driver
|
||
* to pass a packet up the TCP/IP stack. <20><>IP<49><50><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݰ<EFBFBD>*/
|
||
netif_input_fn input;
|
||
/** This function is called by the IP module when it wants
|
||
* to send a packet on the interface. This function typically
|
||
* first resolves the hardware address, then sends the packet. <20><><EFBFBD><EFBFBD>IP<49><50><EFBFBD>ݰ<EFBFBD>*/
|
||
netif_output_fn output;
|
||
/** This function is called by the ARP module when it wants
|
||
* to send a packet on the interface. This function outputs
|
||
* the pbuf as-is on the link medium. <20>ײ<EFBFBD><D7B2><EFBFBD><EFBFBD>ݰ<EFBFBD><DDB0><EFBFBD><EFBFBD><EFBFBD>*/
|
||
netif_linkoutput_fn linkoutput;
|
||
#if LWIP_NETIF_STATUS_CALLBACK
|
||
/** This function is called when the netif state is set to up or down
|
||
*/
|
||
netif_status_callback_fn status_callback;
|
||
#endif /* LWIP_NETIF_STATUS_CALLBACK */
|
||
#if LWIP_NETIF_LINK_CALLBACK
|
||
/** This function is called when the netif link is set to up or down
|
||
*/
|
||
netif_status_callback_fn link_callback;
|
||
#endif /* LWIP_NETIF_LINK_CALLBACK */
|
||
/** This field can be set by the device driver and could point
|
||
* to state information for the device. <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֶΣ<D6B6><CEA3><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD><D6B8><EFBFBD>ײ<EFBFBD><D7B2>豸<EFBFBD><E8B1B8><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϣ*/
|
||
void *state;
|
||
#if LWIP_DHCP
|
||
/** the DHCP client state information for this netif */
|
||
struct dhcp *dhcp;
|
||
struct udp_pcb *dhcps_pcb; //dhcps
|
||
dhcp_event_fn dhcp_event;
|
||
#endif /* LWIP_DHCP */
|
||
#if LWIP_AUTOIP
|
||
/** the AutoIP client state information for this netif */
|
||
struct autoip *autoip;
|
||
#endif
|
||
#if LWIP_NETIF_HOSTNAME
|
||
/* the hostname for this netif, NULL is a valid value */
|
||
char* hostname;
|
||
#endif /* LWIP_NETIF_HOSTNAME */
|
||
/** maximum transfer unit (in bytes) <20>ýӿ<C3BD><D3BF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݰ<EFBFBD><DDB0><EFBFBD><EFBFBD>ȣ<EFBFBD><C8A3><EFBFBD><EFBFBD><EFBFBD>1500*/
|
||
u16_t mtu;
|
||
/** number of bytes used in hwaddr<64>ýӿ<C3BD><D3BF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ַ<EFBFBD><D6B7><EFBFBD><EFBFBD> */
|
||
u8_t hwaddr_len;
|
||
/** link level hardware address of this interface <20>ýӿ<C3BD><D3BF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ַ*/
|
||
u8_t hwaddr[NETIF_MAX_HWADDR_LEN];
|
||
/** flags (see NETIF_FLAG_ above) <20>ýӿ<C3BD>״̬<D7B4><CCAC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֶ<EFBFBD>*/
|
||
u8_t flags;
|
||
/** descriptive abbreviation <20>ýӿڵ<D3BF><DAB5><EFBFBD><EFBFBD><EFBFBD>*/
|
||
char name[2];
|
||
/** number of this interface <20>ýӿڵı<DAB5><C4B1><EFBFBD>*/
|
||
u8_t num;
|
||
#if LWIP_SNMP
|
||
/** link type (from "snmp_ifType" enum from snmp.h) */
|
||
u8_t link_type;
|
||
/** (estimate) link speed */
|
||
u32_t link_speed;
|
||
/** timestamp at last change made (up/down) */
|
||
u32_t ts;
|
||
/** counters */
|
||
u32_t ifinoctets;
|
||
u32_t ifinucastpkts;
|
||
u32_t ifinnucastpkts;
|
||
u32_t ifindiscards;
|
||
u32_t ifoutoctets;
|
||
u32_t ifoutucastpkts;
|
||
u32_t ifoutnucastpkts;
|
||
u32_t ifoutdiscards;
|
||
#endif /* LWIP_SNMP */
|
||
#if LWIP_IGMP
|
||
/** This function could be called to add or delete a entry in the multicast
|
||
filter table of the ethernet MAC.*/
|
||
netif_igmp_mac_filter_fn igmp_mac_filter;
|
||
#endif /* LWIP_IGMP */
|
||
#if LWIP_NETIF_HWADDRHINT
|
||
u8_t *addr_hint;
|
||
#endif /* LWIP_NETIF_HWADDRHINT */
|
||
#if ENABLE_LOOPBACK
|
||
/* List of packets to be queued for ourselves. ָ<><D6B8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><CDB8>Լ<EFBFBD><D4BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݰ<EFBFBD><DDB0><EFBFBD>pbuf*/
|
||
struct pbuf *loop_first;//<2F><>һ<EFBFBD><D2BB>
|
||
struct pbuf *loop_last;//<2F><><EFBFBD><EFBFBD>һ<EFBFBD><D2BB>
|
||
#if LWIP_LOOPBACK_MAX_PBUFS
|
||
u16_t loop_cnt_current;
|
||
#endif /* LWIP_LOOPBACK_MAX_PBUFS */
|
||
#endif /* ENABLE_LOOPBACK */
|
||
#if IP_NAPT
|
||
u8_t napt;
|
||
#endif
|
||
};
|
||
|
||
#if LWIP_SNMP
|
||
#define NETIF_INIT_SNMP(netif, type, speed) \
|
||
/* use "snmp_ifType" enum from snmp.h for "type", snmp_ifType_ethernet_csmacd by example */ \
|
||
(netif)->link_type = (type); \
|
||
/* your link speed here (units: bits per second) */ \
|
||
(netif)->link_speed = (speed); \
|
||
(netif)->ts = 0; \
|
||
(netif)->ifinoctets = 0; \
|
||
(netif)->ifinucastpkts = 0; \
|
||
(netif)->ifinnucastpkts = 0; \
|
||
(netif)->ifindiscards = 0; \
|
||
(netif)->ifoutoctets = 0; \
|
||
(netif)->ifoutucastpkts = 0; \
|
||
(netif)->ifoutnucastpkts = 0; \
|
||
(netif)->ifoutdiscards = 0
|
||
#else /* LWIP_SNMP */
|
||
#define NETIF_INIT_SNMP(netif, type, speed)
|
||
#endif /* LWIP_SNMP */
|
||
|
||
|
||
/** The list of network interfaces. */
|
||
extern struct netif *netif_list;
|
||
/** The default network interface. */
|
||
extern struct netif *netif_default;
|
||
|
||
void netif_init(void)ICACHE_FLASH_ATTR;
|
||
|
||
struct netif *netif_add(struct netif *netif, ip_addr_t *ipaddr, ip_addr_t *netmask,
|
||
ip_addr_t *gw, void *state, netif_init_fn init, netif_input_fn input)ICACHE_FLASH_ATTR;
|
||
|
||
void
|
||
netif_set_addr(struct netif *netif, ip_addr_t *ipaddr, ip_addr_t *netmask,
|
||
ip_addr_t *gw)ICACHE_FLASH_ATTR;
|
||
void netif_remove(struct netif * netif)ICACHE_FLASH_ATTR;
|
||
|
||
/* Returns a network interface given its name. The name is of the form
|
||
"et0", where the first two letters are the "name" field in the
|
||
netif structure, and the digit is in the num field in the same
|
||
structure. */
|
||
struct netif *netif_find(char *name)ICACHE_FLASH_ATTR;
|
||
|
||
void netif_set_default(struct netif *netif)ICACHE_FLASH_ATTR;
|
||
|
||
void netif_set_ipaddr(struct netif *netif, ip_addr_t *ipaddr)ICACHE_FLASH_ATTR;
|
||
void netif_set_netmask(struct netif *netif, ip_addr_t *netmask)ICACHE_FLASH_ATTR;
|
||
void netif_set_gw(struct netif *netif, ip_addr_t *gw)ICACHE_FLASH_ATTR;
|
||
|
||
void netif_set_up(struct netif *netif)ICACHE_FLASH_ATTR;
|
||
void netif_set_down(struct netif *netif)ICACHE_FLASH_ATTR;
|
||
/** Ask if an interface is up */
|
||
#define netif_is_up(netif) (((netif)->flags & NETIF_FLAG_UP) ? (u8_t)1 : (u8_t)0)
|
||
|
||
#if LWIP_NETIF_STATUS_CALLBACK
|
||
void netif_set_status_callback(struct netif *netif, netif_status_callback_fn status_callback)ICACHE_FLASH_ATTR;
|
||
#endif /* LWIP_NETIF_STATUS_CALLBACK */
|
||
|
||
void netif_set_link_up(struct netif *netif)ICACHE_FLASH_ATTR;
|
||
void netif_set_link_down(struct netif *netif)ICACHE_FLASH_ATTR;
|
||
/** Ask if a link is up */
|
||
#define netif_is_link_up(netif) (((netif)->flags & NETIF_FLAG_LINK_UP) ? (u8_t)1 : (u8_t)0)
|
||
|
||
#if LWIP_NETIF_LINK_CALLBACK
|
||
void netif_set_link_callback(struct netif *netif, netif_status_callback_fn link_callback)ICACHE_FLASH_ATTR;
|
||
#endif /* LWIP_NETIF_LINK_CALLBACK */
|
||
|
||
#if LWIP_NETIF_HOSTNAME
|
||
#define netif_set_hostname(netif, name) do { if((netif) != NULL) { (netif)->hostname = name; }}while(0)
|
||
#define netif_get_hostname(netif) (((netif) != NULL) ? ((netif)->hostname) : NULL)
|
||
#endif /* LWIP_NETIF_HOSTNAME */
|
||
|
||
#if LWIP_IGMP
|
||
#define netif_set_igmp_mac_filter(netif, function) do { if((netif) != NULL) { (netif)->igmp_mac_filter = function; }}while(0)
|
||
#define netif_get_igmp_mac_filter(netif) (((netif) != NULL) ? ((netif)->igmp_mac_filter) : NULL)
|
||
#endif /* LWIP_IGMP */
|
||
|
||
#if ENABLE_LOOPBACK
|
||
err_t netif_loop_output(struct netif *netif, struct pbuf *p, ip_addr_t *dest_ip)ICACHE_FLASH_ATTR;
|
||
void netif_poll(struct netif *netif)ICACHE_FLASH_ATTR;
|
||
#if !LWIP_NETIF_LOOPBACK_MULTITHREADING
|
||
void netif_poll_all(void)ICACHE_FLASH_ATTR;
|
||
#endif /* !LWIP_NETIF_LOOPBACK_MULTITHREADING */
|
||
#endif /* ENABLE_LOOPBACK */
|
||
|
||
#ifdef __cplusplus
|
||
}
|
||
#endif
|
||
|
||
#endif /* __LWIP_NETIF_H__ */
|