ipnet2.rar_IPTCP_ipnet_ipnet nat rule_ipnet_eth_input_vxworks组件代

/* ****************************************************************************** * SOURCE FILE * * Document no: @(#) $Name: ipnet2-any-r6_5_0 $ $RCSfile: ipnet_ip4.c,v $ $Revision: 1.532.2.2 $ * $Source: /home/interpeak/CVSRoot/ipnet2/src/ipnet_ip4.c,v $ * $Author: kenneth $ * $State: Exp $ $Locker: $ * * Copyright 2000-2007 Interpeak AB (http://www.interpeak.se). All rights reserved. * Design and implementation by Kenneth Jonsson <kenneth@interpeak.se> ****************************************************************************** */ /* **************************************************************************** * 1 DESCRIPTION **************************************************************************** */ /* **************************************************************************** * 2 CONFIGURATION **************************************************************************** */ #ifndef IPCOM_KERNEL #define IPCOM_KERNEL #endif #include "ipnet_config.h" /* *=========================================================================== * misc *=========================================================================== #define IPCOM_USE_PROFILING_ENABLE */ /* **************************************************************************** * 3 INCLUDE FILES **************************************************************************** */ #ifdef IPCOM_USE_INET #define IPCOM_USE_CLIB_PROTO #include <ipcom_clib.h> #include <ipcom_cstyle.h> #include <ipcom_err.h> #include <ipcom_inet.h> #include <ipcom_prof.h> #include <ipcom_syslog.h> #include <ipcom_sysvar.h> #include <ipcom_type.h> #include "ipnet.h" #include "ipnet_h.h" #include "ipnet_ip4.h" #include "ipnet_loopback.h" #include "ipnet_eth.h" #ifdef IPTCP #include <iptcp.h> #endif #ifdef IPIPSEC2 #include <ipipsec.h> #endif #ifdef IPNET_USE_ROUTESOCK #include "ipnet_routesock.h" #endif #ifdef IPNET_USE_NETLINKSOCK #include "ipnet_netlink.h" #endif #ifdef IPNET_USE_TUNNEL #include "ipnet_tunnel.h" #endif #ifdef IPMPLS #include "ipnet_mpls.h" #endif #ifdef IPNET_USE_VRRP #include "ipnet_vrrp.h" #endif #ifdef IPFIREWALL #include <ipfirewall.h> #include <ipfirewall_h.h> #endif #ifdef IPCOM_WV_INSTRUMENTATION #include <ipcom_windview.h> IP_STATIC Ip_u8 wvNetDModuleId = IPCOM_WV_IPNET_IP4_MODULE; /* ipnet_ip4.c */ IP_STATIC Ip_u8 wvNetDLocalFilter = WV_NETD_NONE; /* Available event filter */ IP_STATIC Ip_u8 wvNetDEntityId = WV_NETD_IP4; /* Entity ID */ #endif /* **************************************************************************** * 4 DEFINES **************************************************************************** */ /* Maximum number of bytes of original IP datagram to send in ICMP error reply. */ #define IPNET_ICMP_MAX_SIZE 256 /* enough to handle tunnels better. */ #define IPNET_GET_PKT_TIMESTAMP_OPT_PTR(pkt) ((Ipnet_pkt_ip_opt_timestamp *) (pkt)->link_cookie) #define IPNET_SET_PKT_TIMESTAMP_OPT_PTR(pkt, ts) ((pkt)->link_cookie = (Ip_ptrdiff_t) (ts)) /* *=========================================================================== * misc *=========================================================================== */ #define IPNET_ICMP_HDR_SIZE (8) /* *=========================================================================== * ICMP for IPv4 *=========================================================================== */ #define IPNET_ICMP4_TYPE_ECHO_REPLY 0 #define IPNET_ICMP4_TYPE_DST_UNREACHABLE 3 #define IPNET_ICMP4_TYPE_SOURCEQUENCH 4 #define IPNET_ICMP4_TYPE_REDIRECT 5 #define IPNET_ICMP4_TYPE_ECHO_REQUEST 8 #define IPNET_ICMP4_TYPE_ROUTER_ADVERT 9 #define IPNET_ICMP4_TYPE_ROUTER_SOLICIT 10 #define IPNET_ICMP4_TYPE_TIME_EXCEEDED 11 #define IPNET_ICMP4_TYPE_PARAMPROB 12 #define IPNET_ICMP4_TYPE_TSTAMP_REQUEST 13 #define IPNET_ICMP4_TYPE_TSTAMP_REPLY 14 #define IPNET_ICMP4_TYPE_MASK_REQUEST 17 #define IPNET_ICMP4_TYPE_MASK_REPLY 18 /* [3] Destination unreachable codes */ #define IPNET_ICMP4_CODE_DST_UNREACH_NET 0 /* Network Unreachable */ #define IPNET_ICMP4_CODE_DST_UNREACH_HOST 1 /* Host Unreachable */ #define IPNET_ICMP4_CODE_DST_UNREACH_PROTO 2 /* Protocol Unreachable */ #define IPNET_ICMP4_CODE_DST_UNREACH_PORT 3 /* Port Unreachable */ #define IPNET_ICMP4_CODE_DST_NEEDFRAG 4 /* Fragmentation needed but no frag. bit set */ #define IPNET_ICMP4_CODE_DST_SRCFAIL 5 /* Source routing failed */ #define IPNET_ICMP4_CODE_DST_PROHIBITED_NET 9 /* Destination network administratively prohibited */ #define IPNET_ICMP4_CODE_DST_PROHIBITED_HOST 10 /* Destination host administratively prohibited */ /* [5] Redirect codes */ #define IPNET_ICMP4_CODE_RED_NETWORK 0 #define IPNET_ICMP4_CODE_RED_HOST 1 #define IPNET_ICMP4_CODE_RED_TOS_AND_NETWORK 2 #define IPNET_ICMP4_CODE_DST_TOS_AND_HOST 3 /* [11] Time exceeded codes */ #define IPNET_ICMP4_CODE_TIM_TTL 0 #define IPNET_ICMP4_CODE_TIM_REASSEMBLY 1 /* TOS to use for Destination Unreachable, Redirect, Time Exceeded, and Parameter Problem */ #define IPNET_ICMP4_TOS_INTERNETWORK_CONTROL 6 /* *=========================================================================== * IGMP for IPv4 *=========================================================================== */ /* IGMP version 1 is defined in RFC 1112 */ /* IGMP version 2 is defined in RFC 2236 */ /* IGMP version 3 is defined in RFC 3376 */ #define IPNET_IGMP4_TYPE_MEMBERSHIP_QUERY 0x11 #define IPNET_IGMP4_TYPE_V1_MEMBERSHIP_REPORT 0x12 #define IPNET_IGMP4_TYPE_V2_MEMBERSHIP_REPORT 0x16 #define IPNET_IGMP4_TYPE_V2_LEAVE_GROUP 0x17 #define IPNET_IGMP4_TYPE_V3_MEMBERSHIP_REPORT 0x22 /* The interface is running on a link with at least one IGMPv1 host/router */ #define IPNET_IGMPV1_MODE 1 /* The interface is running on a link with at least one IGMPv2 host/router */ #define IPNET_IGMPV2_MODE 2 /* The interface is running in IGMPv3 mode */ #define IPNET_IGMPV3_MODE 3 /* Gets the forward cache entry that can match the IP header */ #define IPNET_IP4_GET_FORWARD_CACHE_ENTRY(cache, ip_hdr) \ do { \ unsigned i; \ i = ipcom_hash_update((ip_hdr)->src, \ sizeof(Ip_u32) * 2, \ (*(Ip_u16*) &(ip_hdr)->v_hl ^ (ip_hdr)->p) + ipnet->route_cache_id); \ i &= ((1 << IPNET_IPV4_FORWARD_CACHE_ORDER) - 1); \ (cache) = &ipnet->ip4.forward_cache[i]; \ } while ((0)) #ifdef IPNET_USE_RFC3927 /* <- defended - | ^ | | DISABLED -> INIT -> PROBE -> ANNOUNCE -> ACTIVE -> DEFEND ^ | | | | | | | | | \ / / / / - duplicate <----- <---------- <------- */ #define IPNET_IP4_LLADDR_STATE_DISABLED 0 /* Link local IPv4 address not used */ #define IPNET_IP4_LLADDR_STATE_INIT 1 /* Generate link local IPv4 address */ #define IPNET_IP4_LLADDR_STATE_PROBE 2 /* Check if another host has the address */ #define IPNET_IP4_LLADDR_STATE_DEFEND 3 /* Detected another host using the same address try to make this host the sole owner of it */ #define IPNET_IP4_LLADDR_STATE_ANNOUNCE 4 /* Update the ARP cache of all hosts, address assigned to interface */ #define IPNET_IP4_LLADDR_STATE_ACTIVE 5 /* Addr