mirror of https://github.com/jeelabs/esp-link.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
215 lines
8.1 KiB
215 lines
8.1 KiB
/*
|
|
* 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_IP_H__
|
|
#define __LWIP_IP_H__
|
|
|
|
#include "lwip/opt.h"
|
|
|
|
#include "lwip/def.h"
|
|
#include "lwip/pbuf.h"
|
|
#include "lwip/ip_addr.h"
|
|
#include "lwip/err.h"
|
|
#include "lwip/netif.h"
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/** Currently, the function ip_output_if_opt() is only used with IGMP */
|
|
#define IP_OPTIONS_SEND LWIP_IGMP
|
|
|
|
#define IP_HLEN 20
|
|
|
|
#define IP_PROTO_ICMP 1
|
|
#define IP_PROTO_IGMP 2
|
|
#define IP_PROTO_UDP 17
|
|
#define IP_PROTO_UDPLITE 136
|
|
#define IP_PROTO_TCP 6
|
|
|
|
/* This is passed as the destination address to ip_output_if (not
|
|
to ip_output), meaning that an IP header already is constructed
|
|
in the pbuf. This is used when TCP retransmits. */
|
|
#ifdef IP_HDRINCL
|
|
#undef IP_HDRINCL
|
|
#endif /* IP_HDRINCL */
|
|
#define IP_HDRINCL NULL
|
|
|
|
#if LWIP_NETIF_HWADDRHINT
|
|
#define IP_PCB_ADDRHINT ;u8_t addr_hint
|
|
#else
|
|
#define IP_PCB_ADDRHINT
|
|
#endif /* LWIP_NETIF_HWADDRHINT */
|
|
|
|
/* This is the common part of all PCB types. It needs to be at the
|
|
beginning of a PCB type definition. It is located here so that
|
|
changes to this common part are made in one location instead of
|
|
having to change all PCB structs. */
|
|
#define IP_PCB \
|
|
/* ip addresses in network byte order */ \
|
|
ip_addr_t local_ip; \
|
|
ip_addr_t remote_ip; \
|
|
/* Socket options */ \
|
|
u8_t so_options; \
|
|
/* Type Of Service */ \
|
|
u8_t tos; \
|
|
/* Time To Live */ \
|
|
u8_t ttl \
|
|
/* link layer address resolution hint */ \
|
|
IP_PCB_ADDRHINT
|
|
|
|
struct ip_pcb {
|
|
/* Common members of all PCB types */
|
|
IP_PCB;
|
|
};
|
|
|
|
/*
|
|
* Option flags per-socket. These are the same like SO_XXX.
|
|
*/
|
|
/*#define SOF_DEBUG (u8_t)0x01U Unimplemented: turn on debugging info recording */
|
|
#define SOF_ACCEPTCONN (u8_t)0x02U /* socket has had listen() */
|
|
#define SOF_REUSEADDR (u8_t)0x04U /* allow local address reuse */
|
|
#define SOF_KEEPALIVE (u8_t)0x08U /* keep connections alive */
|
|
/*#define SOF_DONTROUTE (u8_t)0x10U Unimplemented: just use interface addresses */
|
|
#define SOF_BROADCAST (u8_t)0x20U /* permit to send and to receive broadcast messages (see IP_SOF_BROADCAST option) */
|
|
/*#define SOF_USELOOPBACK (u8_t)0x40U Unimplemented: bypass hardware when possible */
|
|
#define SOF_LINGER (u8_t)0x80U /* linger on close if data present */
|
|
/*#define SOF_OOBINLINE (u16_t)0x0100U Unimplemented: leave received OOB data in line */
|
|
/*#define SOF_REUSEPORT (u16_t)0x0200U Unimplemented: allow local address & port reuse */
|
|
|
|
/* These flags are inherited (e.g. from a listen-pcb to a connection-pcb): */
|
|
#define SOF_INHERITED (SOF_REUSEADDR|SOF_KEEPALIVE|SOF_LINGER/*|SOF_DEBUG|SOF_DONTROUTE|SOF_OOBINLINE*/)
|
|
|
|
|
|
#ifdef PACK_STRUCT_USE_INCLUDES
|
|
# include "arch/bpstruct.h"
|
|
#endif
|
|
PACK_STRUCT_BEGIN
|
|
struct ip_hdr {
|
|
/* version / header length / type of service */
|
|
PACK_STRUCT_FIELD(u16_t _v_hl_tos);
|
|
/* total length */
|
|
PACK_STRUCT_FIELD(u16_t _len);
|
|
/* identification */
|
|
PACK_STRUCT_FIELD(u16_t _id);
|
|
/* fragment offset field */
|
|
PACK_STRUCT_FIELD(u16_t _offset);
|
|
#define IP_RF 0x8000 /* reserved fragment flag */
|
|
#define IP_DF 0x4000 /* dont fragment flag */
|
|
#define IP_MF 0x2000 /* more fragments flag */
|
|
#define IP_OFFMASK 0x1fff /* mask for fragmenting bits */
|
|
/* time to live */
|
|
PACK_STRUCT_FIELD(u8_t _ttl);
|
|
/* protocol*/
|
|
PACK_STRUCT_FIELD(u8_t _proto);
|
|
/* checksum */
|
|
PACK_STRUCT_FIELD(u16_t _chksum);
|
|
/* source and destination IP addresses */
|
|
PACK_STRUCT_FIELD(ip_addr_p_t src);
|
|
PACK_STRUCT_FIELD(ip_addr_p_t dest);
|
|
} PACK_STRUCT_STRUCT;
|
|
PACK_STRUCT_END
|
|
#ifdef PACK_STRUCT_USE_INCLUDES
|
|
# include "arch/epstruct.h"
|
|
#endif
|
|
|
|
#define IPH_V(hdr) (ntohs((hdr)->_v_hl_tos) >> 12)
|
|
#define IPH_HL(hdr) ((ntohs((hdr)->_v_hl_tos) >> 8) & 0x0f)
|
|
#define IPH_TOS(hdr) (ntohs((hdr)->_v_hl_tos) & 0xff)
|
|
#define IPH_LEN(hdr) ((hdr)->_len)
|
|
#define IPH_ID(hdr) ((hdr)->_id)
|
|
#define IPH_OFFSET(hdr) ((hdr)->_offset)
|
|
#define IPH_TTL(hdr) ((hdr)->_ttl)
|
|
#define IPH_PROTO(hdr) ((hdr)->_proto)
|
|
#define IPH_CHKSUM(hdr) ((hdr)->_chksum)
|
|
|
|
#define IPH_VHLTOS_SET(hdr, v, hl, tos) (hdr)->_v_hl_tos = (htons(((v) << 12) | ((hl) << 8) | (tos)))
|
|
#define IPH_LEN_SET(hdr, len) (hdr)->_len = (len)
|
|
#define IPH_ID_SET(hdr, id) (hdr)->_id = (id)
|
|
#define IPH_OFFSET_SET(hdr, off) (hdr)->_offset = (off)
|
|
#define IPH_TTL_SET(hdr, ttl) (hdr)->_ttl = (u8_t)(ttl)
|
|
#define IPH_PROTO_SET(hdr, proto) (hdr)->_proto = (u8_t)(proto)
|
|
#define IPH_CHKSUM_SET(hdr, chksum) (hdr)->_chksum = (chksum)
|
|
|
|
/** The interface that provided the packet for the current callback invocation. */
|
|
extern struct netif *current_netif;
|
|
/** Header of the input packet currently being processed. */
|
|
extern const struct ip_hdr *current_header;
|
|
/** Source IP address of current_header */
|
|
extern ip_addr_t current_iphdr_src;
|
|
/** Destination IP address of current_header */
|
|
extern ip_addr_t current_iphdr_dest;
|
|
|
|
#define ip_init() /* Compatibility define, not init needed. */
|
|
struct netif *ip_route(ip_addr_t *dest)ICACHE_FLASH_ATTR;
|
|
struct netif *ip_router(ip_addr_t *dest, ip_addr_t *source);
|
|
|
|
err_t ip_input(struct pbuf *p, struct netif *inp)ICACHE_FLASH_ATTR;
|
|
err_t ip_output(struct pbuf *p, ip_addr_t *src, ip_addr_t *dest,
|
|
u8_t ttl, u8_t tos, u8_t proto)ICACHE_FLASH_ATTR;
|
|
err_t ip_output_if(struct pbuf *p, ip_addr_t *src, ip_addr_t *dest,
|
|
u8_t ttl, u8_t tos, u8_t proto,
|
|
struct netif *netif)ICACHE_FLASH_ATTR;
|
|
#if LWIP_NETIF_HWADDRHINT
|
|
err_t ip_output_hinted(struct pbuf *p, ip_addr_t *src, ip_addr_t *dest,
|
|
u8_t ttl, u8_t tos, u8_t proto, u8_t *addr_hint)ICACHE_FLASH_ATTR;
|
|
#endif /* LWIP_NETIF_HWADDRHINT */
|
|
#if IP_OPTIONS_SEND
|
|
err_t ip_output_if_opt(struct pbuf *p, ip_addr_t *src, ip_addr_t *dest,
|
|
u8_t ttl, u8_t tos, u8_t proto, struct netif *netif, void *ip_options,
|
|
u16_t optlen)ICACHE_FLASH_ATTR;
|
|
#endif /* IP_OPTIONS_SEND */
|
|
/** Get the interface that received the current packet.
|
|
* This function must only be called from a receive callback (udp_recv,
|
|
* raw_recv, tcp_accept). It will return NULL otherwise. */
|
|
#define ip_current_netif() (current_netif)
|
|
/** Get the IP header of the current packet.
|
|
* This function must only be called from a receive callback (udp_recv,
|
|
* raw_recv, tcp_accept). It will return NULL otherwise. */
|
|
#define ip_current_header() (current_header)
|
|
/** Source IP address of current_header */
|
|
#define ip_current_src_addr() (¤t_iphdr_src)
|
|
/** Destination IP address of current_header */
|
|
#define ip_current_dest_addr() (¤t_iphdr_dest)
|
|
|
|
#if IP_DEBUG
|
|
void ip_debug_print(struct pbuf *p)ICACHE_FLASH_ATTR;
|
|
#else
|
|
#define ip_debug_print(p)
|
|
#endif /* IP_DEBUG */
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* __LWIP_IP_H__ */
|
|
|
|
|
|
|