forked from espressif/arduino-esp32
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This commit is contained in:
me-no-dev
committed by
Ivan Grokhotkov
Ivan Grokhotkov
parent
668acc2c08
commit
5f3a205955
304
tools/sdk/include/lwip/lwip/ip.h
Executable file
304
tools/sdk/include/lwip/lwip/ip.h
Executable file
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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_HDR_IP_H__
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#define LWIP_HDR_IP_H__
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#include "lwip/opt.h"
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#include "lwip/def.h"
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#include "lwip/pbuf.h"
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#include "lwip/ip_addr.h"
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#include "lwip/err.h"
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#include "lwip/netif.h"
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#include "lwip/ip4.h"
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#include "lwip/ip6.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define IP_PROTO_ICMP 1
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#define IP_PROTO_IGMP 2
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#define IP_PROTO_UDP 17
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#define IP_PROTO_UDPLITE 136
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#define IP_PROTO_TCP 6
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/** This operates on a void* by loading the first byte */
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#define IP_HDR_GET_VERSION(ptr) ((*(u8_t*)(ptr)) >> 4)
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/* This is passed as the destination address to ip_output_if (not
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to ip_output), meaning that an IP header already is constructed
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in the pbuf. This is used when TCP retransmits. */
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#ifdef IP_HDRINCL
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#undef IP_HDRINCL
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#endif /* IP_HDRINCL */
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#define IP_HDRINCL NULL
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/** pbufs passed to IP must have a ref-count of 1 as their payload pointer
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gets altered as the packet is passed down the stack */
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#ifndef LWIP_IP_CHECK_PBUF_REF_COUNT_FOR_TX
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#define LWIP_IP_CHECK_PBUF_REF_COUNT_FOR_TX(p) LWIP_ASSERT("p->ref == 1", (p)->ref == 1)
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#endif
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#if LWIP_NETIF_HWADDRHINT
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#define IP_PCB_ADDRHINT ;u8_t addr_hint
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#else
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#define IP_PCB_ADDRHINT
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#endif /* LWIP_NETIF_HWADDRHINT */
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/* This is the common part of all PCB types. It needs to be at the
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beginning of a PCB type definition. It is located here so that
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changes to this common part are made in one location instead of
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having to change all PCB structs. */
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#define IP_PCB \
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/* ip addresses in network byte order */ \
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ip_addr_t local_ip; \
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ip_addr_t remote_ip; \
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/* Socket options */ \
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u8_t so_options; \
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/* Type Of Service */ \
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u8_t tos; \
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/* Time To Live */ \
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u8_t ttl \
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/* link layer address resolution hint */ \
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IP_PCB_ADDRHINT
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struct ip_pcb {
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/* Common members of all PCB types */
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IP_PCB;
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};
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/*
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* Option flags per-socket. These are the same like SO_XXX in sockets.h
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*/
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#define SOF_REUSEADDR 0x04U /* allow local address reuse */
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#define SOF_KEEPALIVE 0x08U /* keep connections alive */
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#define SOF_BROADCAST 0x20U /* permit to send and to receive broadcast messages (see IP_SOF_BROADCAST option) */
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/* These flags are inherited (e.g. from a listen-pcb to a connection-pcb): */
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#define SOF_INHERITED (SOF_REUSEADDR|SOF_KEEPALIVE)
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/* Global variables of this module, kept in a struct for efficient access using base+index. */
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struct ip_globals
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{
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/** The interface that accepted the packet for the current callback invocation. */
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struct netif *current_netif;
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/** The interface that received the packet for the current callback invocation. */
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struct netif *current_input_netif;
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#if LWIP_IPV4
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/** Header of the input packet currently being processed. */
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struct ip_hdr *current_ip4_header;
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#endif /* LWIP_IPV4 */
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#if LWIP_IPV6
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/** Header of the input IPv6 packet currently being processed. */
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struct ip6_hdr *current_ip6_header;
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#endif /* LWIP_IPV6 */
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/** Total header length of current_ip4/6_header (i.e. after this, the UDP/TCP header starts) */
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u16_t current_ip_header_tot_len;
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/** Source IP address of current_header */
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ip_addr_t current_iphdr_src;
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/** Destination IP address of current_header */
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ip_addr_t current_iphdr_dest;
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};
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extern struct ip_globals ip_data;
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/** Get the interface that accepted the current packet.
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* This may or may not be the receiving netif, depending on your netif/network setup.
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* This function must only be called from a receive callback (udp_recv,
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* raw_recv, tcp_accept). It will return NULL otherwise. */
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#define ip_current_netif() (ip_data.current_netif)
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/** Get the interface that received the current packet.
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* This function must only be called from a receive callback (udp_recv,
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* raw_recv, tcp_accept). It will return NULL otherwise. */
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#define ip_current_input_netif() (ip_data.current_input_netif)
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/** Total header length of ip(6)_current_header() (i.e. after this, the UDP/TCP header starts) */
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#define ip_current_header_tot_len() (ip_data.current_ip_header_tot_len)
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/** Source IP address of current_header */
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#define ip_current_src_addr() (&ip_data.current_iphdr_src)
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/** Destination IP address of current_header */
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#define ip_current_dest_addr() (&ip_data.current_iphdr_dest)
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#if LWIP_IPV4 && LWIP_IPV6
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/** Get the IPv4 header of the current packet.
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* This function must only be called from a receive callback (udp_recv,
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* raw_recv, tcp_accept). It will return NULL otherwise. */
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#define ip4_current_header() ((const struct ip_hdr*)(ip_data.current_ip4_header))
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/** Get the IPv6 header of the current packet.
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* This function must only be called from a receive callback (udp_recv,
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* raw_recv, tcp_accept). It will return NULL otherwise. */
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#define ip6_current_header() ((const struct ip6_hdr*)(ip_data.current_ip6_header))
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/** Returns TRUE if the current IP input packet is IPv6, FALSE if it is IPv4 */
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#define ip_current_is_v6() (ip6_current_header() != NULL)
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/** Source IPv6 address of current_header */
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#define ip6_current_src_addr() (ip_2_ip6(&ip_data.current_iphdr_src))
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/** Destination IPv6 address of current_header */
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#define ip6_current_dest_addr() (ip_2_ip6(&ip_data.current_iphdr_dest))
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/** Get the transport layer protocol */
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#define ip_current_header_proto() (ip_current_is_v6() ? \
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IP6H_NEXTH(ip6_current_header()) :\
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IPH_PROTO(ip4_current_header()))
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/** Get the transport layer header */
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#define ip_next_header_ptr() ((const void*)((ip_current_is_v6() ? \
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(const u8_t*)ip6_current_header() : (const u8_t*)ip4_current_header()) + ip_current_header_tot_len()))
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/** Source IP4 address of current_header */
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#define ip4_current_src_addr() (ip_2_ip4(&ip_data.current_iphdr_src))
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/** Destination IP4 address of current_header */
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#define ip4_current_dest_addr() (ip_2_ip4(&ip_data.current_iphdr_dest))
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#elif LWIP_IPV4 /* LWIP_IPV4 && LWIP_IPV6 */
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/** Get the IPv4 header of the current packet.
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* This function must only be called from a receive callback (udp_recv,
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* raw_recv, tcp_accept). It will return NULL otherwise. */
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#define ip4_current_header() ((const struct ip_hdr*)(ip_data.current_ip4_header))
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/** Always returns FALSE when only supporting IPv4 only */
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#define ip_current_is_v6() 0
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/** Get the transport layer protocol */
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#define ip_current_header_proto() IPH_PROTO(ip4_current_header())
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/** Get the transport layer header */
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#define ip_next_header_ptr() ((const void*)((const u8_t*)ip4_current_header() + ip_current_header_tot_len()))
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/** Source IP4 address of current_header */
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#define ip4_current_src_addr() (&ip_data.current_iphdr_src)
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/** Destination IP4 address of current_header */
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#define ip4_current_dest_addr() (&ip_data.current_iphdr_dest)
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#elif LWIP_IPV6 /* LWIP_IPV4 && LWIP_IPV6 */
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/** Get the IPv6 header of the current packet.
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* This function must only be called from a receive callback (udp_recv,
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* raw_recv, tcp_accept). It will return NULL otherwise. */
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#define ip6_current_header() ((const struct ip6_hdr*)(ip_data.current_ip6_header))
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/** Always returns TRUE when only supporting IPv6 only */
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#define ip_current_is_v6() 1
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/** Get the transport layer protocol */
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#define ip_current_header_proto() IP6H_NEXTH(ip6_current_header())
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/** Get the transport layer header */
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#define ip_next_header_ptr() ((const void*)((const u8_t*)ip6_current_header()))
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/** Source IP6 address of current_header */
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#define ip6_current_src_addr() (&ip_data.current_iphdr_src)
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/** Destination IP6 address of current_header */
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#define ip6_current_dest_addr() (&ip_data.current_iphdr_dest)
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#endif /* LWIP_IPV6 */
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/** Union source address of current_header */
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#define ip_current_src_addr() (&ip_data.current_iphdr_src)
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/** Union destination address of current_header */
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#define ip_current_dest_addr() (&ip_data.current_iphdr_dest)
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/** Gets an IP pcb option (SOF_* flags) */
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#define ip_get_option(pcb, opt) ((pcb)->so_options & (opt))
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/** Sets an IP pcb option (SOF_* flags) */
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#define ip_set_option(pcb, opt) ((pcb)->so_options |= (opt))
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/** Resets an IP pcb option (SOF_* flags) */
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#define ip_reset_option(pcb, opt) ((pcb)->so_options &= ~(opt))
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#if LWIP_IPV4 && LWIP_IPV6
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#define ip_output(p, src, dest, ttl, tos, proto) \
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(IP_IS_V6(dest) ? \
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ip6_output(p, ip_2_ip6(src), ip_2_ip6(dest), ttl, tos, proto) : \
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ip4_output(p, ip_2_ip4(src), ip_2_ip4(dest), ttl, tos, proto))
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#define ip_output_if(p, src, dest, ttl, tos, proto, netif) \
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(IP_IS_V6(dest) ? \
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ip6_output_if(p, ip_2_ip6(src), ip_2_ip6(dest), ttl, tos, proto, netif) : \
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ip4_output_if(p, ip_2_ip4(src), ip_2_ip4(dest), ttl, tos, proto, netif))
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#define ip_output_if_src(p, src, dest, ttl, tos, proto, netif) \
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(IP_IS_V6(dest) ? \
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ip6_output_if_src(p, ip_2_ip6(src), ip_2_ip6(dest), ttl, tos, proto, netif) : \
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ip4_output_if_src(p, ip_2_ip4(src), ip_2_ip4(dest), ttl, tos, proto, netif))
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#define ip_output_hinted(p, src, dest, ttl, tos, proto, addr_hint) \
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(IP_IS_V6(dest) ? \
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ip6_output_hinted(p, ip_2_ip6(src), ip_2_ip6(dest), ttl, tos, proto, addr_hint) : \
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ip4_output_hinted(p, ip_2_ip4(src), ip_2_ip4(dest), ttl, tos, proto, addr_hint))
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#define ip_route(src, dest) \
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(IP_IS_V6(dest) ? \
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ip6_route(ip_2_ip6(src), ip_2_ip6(dest)) : \
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ip4_route_src(ip_2_ip4(dest), ip_2_ip4(src)))
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#define ip_netif_get_local_ip(netif, dest) (IP_IS_V6(dest) ? \
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ip6_netif_get_local_ip(netif, ip_2_ip6(dest)) : \
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ip4_netif_get_local_ip(netif))
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#define ip_debug_print(is_ipv6, p) ((is_ipv6) ? ip6_debug_print(p) : ip4_debug_print(p))
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err_t ip_input(struct pbuf *p, struct netif *inp);
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#elif LWIP_IPV4 /* LWIP_IPV4 && LWIP_IPV6 */
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#define ip_output(p, src, dest, ttl, tos, proto) \
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ip4_output(p, src, dest, ttl, tos, proto)
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#define ip_output_if(p, src, dest, ttl, tos, proto, netif) \
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ip4_output_if(p, src, dest, ttl, tos, proto, netif)
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#define ip_output_if_src(p, src, dest, ttl, tos, proto, netif) \
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ip4_output_if_src(p, src, dest, ttl, tos, proto, netif)
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#define ip_output_hinted(p, src, dest, ttl, tos, proto, addr_hint) \
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ip4_output_hinted(p, src, dest, ttl, tos, proto, addr_hint)
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#define ip_route(src, dest) \
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ip4_route_src(dest, src)
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#define ip_netif_get_local_ip(netif, dest) \
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ip4_netif_get_local_ip(netif)
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#define ip_debug_print(is_ipv6, p) ip4_debug_print(p)
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#define ip_input ip4_input
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#elif LWIP_IPV6 /* LWIP_IPV4 && LWIP_IPV6 */
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#define ip_output(p, src, dest, ttl, tos, proto) \
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ip6_output(p, src, dest, ttl, tos, proto)
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#define ip_output_if(p, src, dest, ttl, tos, proto, netif) \
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ip6_output_if(p, src, dest, ttl, tos, proto, netif)
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#define ip_output_if_src(p, src, dest, ttl, tos, proto, netif) \
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ip6_output_if_src(p, src, dest, ttl, tos, proto, netif)
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#define ip_output_hinted(p, src, dest, ttl, tos, proto, addr_hint) \
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ip6_output_hinted(p, src, dest, ttl, tos, proto, addr_hint)
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#define ip_route(src, dest) \
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ip6_route(src, dest)
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#define ip_netif_get_local_ip(netif, dest) \
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ip6_netif_get_local_ip(netif, dest)
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#define ip_debug_print(is_ipv6, p) ip6_debug_print(p)
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#define ip_input ip6_input
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#endif /* LWIP_IPV6 */
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#define ip_route_get_local_ip(src, dest, netif, ipaddr) do { \
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(netif) = ip_route(src, dest); \
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(ipaddr) = ip_netif_get_local_ip(netif, dest); \
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}while(0)
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#ifdef __cplusplus
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}
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#endif
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#endif /* LWIP_HDR_IP_H__ */
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Block a user