16dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt/* 238eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt * Copyright (C) 1999-2013, Broadcom Corporation 338eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt * 46dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt * Permission to use, copy, modify, and/or distribute this software for any 56dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt * purpose with or without fee is hereby granted, provided that the above 66dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt * copyright notice and this permission notice appear in all copies. 76dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt * 86dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 96dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 106dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY 116dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 126dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION 136dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN 146dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 156dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt * 166dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt * Fundamental constants relating to IP Protocol 176dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt * 1838eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt * $Id: bcmip.h 384540 2013-02-12 04:28:58Z $ 196dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt */ 206dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt 216dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt#ifndef _bcmip_h_ 226dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt#define _bcmip_h_ 236dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt 246dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt#ifndef _TYPEDEFS_H_ 256dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt#include <typedefs.h> 266dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt#endif 276dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt 2838eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt/* This marks the start of a packed structure section. */ 296dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt#include <packed_section_start.h> 306dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt 316dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt 3238eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt/* IPV4 and IPV6 common */ 3338eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt#define IP_VER_OFFSET 0x0 /* offset to version field */ 3438eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt#define IP_VER_MASK 0xf0 /* version mask */ 3538eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt#define IP_VER_SHIFT 4 /* version shift */ 3638eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt#define IP_VER_4 4 /* version number for IPV4 */ 3738eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt#define IP_VER_6 6 /* version number for IPV6 */ 386dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt 396dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt#define IP_VER(ip_body) \ 406dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt ((((uint8 *)(ip_body))[IP_VER_OFFSET] & IP_VER_MASK) >> IP_VER_SHIFT) 416dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt 4238eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt#define IP_PROT_ICMP 0x1 /* ICMP protocol */ 4338eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt#define IP_PROT_IGMP 0x2 /* IGMP protocol */ 4438eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt#define IP_PROT_TCP 0x6 /* TCP protocol */ 4538eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt#define IP_PROT_UDP 0x11 /* UDP protocol type */ 4638eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt#define IP_PROT_ICMP6 0x3a /* ICMPv6 protocol type */ 4738eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt 4838eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt/* IPV4 field offsets */ 4938eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt#define IPV4_VER_HL_OFFSET 0 /* version and ihl byte offset */ 5038eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt#define IPV4_TOS_OFFSET 1 /* type of service offset */ 5138eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt#define IPV4_PKTLEN_OFFSET 2 /* packet length offset */ 5238eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt#define IPV4_PKTFLAG_OFFSET 6 /* more-frag,dont-frag flag offset */ 5338eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt#define IPV4_PROT_OFFSET 9 /* protocol type offset */ 5438eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt#define IPV4_CHKSUM_OFFSET 10 /* IP header checksum offset */ 5538eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt#define IPV4_SRC_IP_OFFSET 12 /* src IP addr offset */ 5638eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt#define IPV4_DEST_IP_OFFSET 16 /* dest IP addr offset */ 5738eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt#define IPV4_OPTIONS_OFFSET 20 /* IP options offset */ 5838eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt#define IPV4_MIN_HEADER_LEN 20 /* Minimum size for an IP header (no options) */ 5938eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt 6038eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt/* IPV4 field decodes */ 6138eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt#define IPV4_VER_MASK 0xf0 /* IPV4 version mask */ 6238eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt#define IPV4_VER_SHIFT 4 /* IPV4 version shift */ 6338eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt 6438eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt#define IPV4_HLEN_MASK 0x0f /* IPV4 header length mask */ 656dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt#define IPV4_HLEN(ipv4_body) (4 * (((uint8 *)(ipv4_body))[IPV4_VER_HL_OFFSET] & IPV4_HLEN_MASK)) 666dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt 6738eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt#define IPV4_ADDR_LEN 4 /* IPV4 address length */ 686dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt 696dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt#define IPV4_ADDR_NULL(a) ((((uint8 *)(a))[0] | ((uint8 *)(a))[1] | \ 706dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt ((uint8 *)(a))[2] | ((uint8 *)(a))[3]) == 0) 716dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt 726dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt#define IPV4_ADDR_BCAST(a) ((((uint8 *)(a))[0] & ((uint8 *)(a))[1] & \ 736dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt ((uint8 *)(a))[2] & ((uint8 *)(a))[3]) == 0xff) 746dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt 7538eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt#define IPV4_TOS_DSCP_MASK 0xfc /* DiffServ codepoint mask */ 7638eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt#define IPV4_TOS_DSCP_SHIFT 2 /* DiffServ codepoint shift */ 776dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt 786dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt#define IPV4_TOS(ipv4_body) (((uint8 *)(ipv4_body))[IPV4_TOS_OFFSET]) 796dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt 8038eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt#define IPV4_TOS_PREC_MASK 0xe0 /* Historical precedence mask */ 8138eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt#define IPV4_TOS_PREC_SHIFT 5 /* Historical precedence shift */ 826dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt 8338eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt#define IPV4_TOS_LOWDELAY 0x10 /* Lowest delay requested */ 8438eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt#define IPV4_TOS_THROUGHPUT 0x8 /* Best throughput requested */ 8538eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt#define IPV4_TOS_RELIABILITY 0x4 /* Most reliable delivery requested */ 866dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt 876dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt#define IPV4_PROT(ipv4_body) (((uint8 *)(ipv4_body))[IPV4_PROT_OFFSET]) 886dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt 8938eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt#define IPV4_FRAG_RESV 0x8000 /* Reserved */ 9038eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt#define IPV4_FRAG_DONT 0x4000 /* Don't fragment */ 9138eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt#define IPV4_FRAG_MORE 0x2000 /* More fragments */ 9238eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt#define IPV4_FRAG_OFFSET_MASK 0x1fff /* Fragment offset */ 936dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt 9438eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt#define IPV4_ADDR_STR_LEN 16 /* Max IP address length in string format */ 956dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt 9638eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt/* IPV4 packet formats */ 976dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry ShmidtBWL_PRE_PACKED_STRUCT struct ipv4_addr { 986dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt uint8 addr[IPV4_ADDR_LEN]; 996dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt} BWL_POST_PACKED_STRUCT; 1006dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt 1016dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry ShmidtBWL_PRE_PACKED_STRUCT struct ipv4_hdr { 10238eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt uint8 version_ihl; /* Version and Internet Header Length */ 10338eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt uint8 tos; /* Type Of Service */ 10438eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt uint16 tot_len; /* Number of bytes in packet (max 65535) */ 1056dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt uint16 id; 10638eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt uint16 frag; /* 3 flag bits and fragment offset */ 10738eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt uint8 ttl; /* Time To Live */ 10838eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt uint8 prot; /* Protocol */ 10938eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt uint16 hdr_chksum; /* IP header checksum */ 11038eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt uint8 src_ip[IPV4_ADDR_LEN]; /* Source IP Address */ 11138eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt uint8 dst_ip[IPV4_ADDR_LEN]; /* Destination IP Address */ 1126dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt} BWL_POST_PACKED_STRUCT; 1136dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt 11438eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt/* IPV6 field offsets */ 11538eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt#define IPV6_PAYLOAD_LEN_OFFSET 4 /* payload length offset */ 11638eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt#define IPV6_NEXT_HDR_OFFSET 6 /* next header/protocol offset */ 11738eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt#define IPV6_HOP_LIMIT_OFFSET 7 /* hop limit offset */ 11838eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt#define IPV6_SRC_IP_OFFSET 8 /* src IP addr offset */ 11938eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt#define IPV6_DEST_IP_OFFSET 24 /* dst IP addr offset */ 1206dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt 12138eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt/* IPV6 field decodes */ 1226dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt#define IPV6_TRAFFIC_CLASS(ipv6_body) \ 1236dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt (((((uint8 *)(ipv6_body))[0] & 0x0f) << 4) | \ 1246dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt ((((uint8 *)(ipv6_body))[1] & 0xf0) >> 4)) 1256dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt 1266dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt#define IPV6_FLOW_LABEL(ipv6_body) \ 1276dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt (((((uint8 *)(ipv6_body))[1] & 0x0f) << 16) | \ 1286dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt (((uint8 *)(ipv6_body))[2] << 8) | \ 1296dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt (((uint8 *)(ipv6_body))[3])) 1306dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt 1316dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt#define IPV6_PAYLOAD_LEN(ipv6_body) \ 1326dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt ((((uint8 *)(ipv6_body))[IPV6_PAYLOAD_LEN_OFFSET + 0] << 8) | \ 1336dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt ((uint8 *)(ipv6_body))[IPV6_PAYLOAD_LEN_OFFSET + 1]) 1346dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt 1356dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt#define IPV6_NEXT_HDR(ipv6_body) \ 1366dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt (((uint8 *)(ipv6_body))[IPV6_NEXT_HDR_OFFSET]) 1376dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt 1386dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt#define IPV6_PROT(ipv6_body) IPV6_NEXT_HDR(ipv6_body) 1396dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt 14038eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt#define IPV6_ADDR_LEN 16 /* IPV6 address length */ 1416dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt 14238eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt/* IPV4 TOS or IPV6 Traffic Classifier or 0 */ 1436dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt#define IP_TOS46(ip_body) \ 1446dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt (IP_VER(ip_body) == IP_VER_4 ? IPV4_TOS(ip_body) : \ 1456dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt IP_VER(ip_body) == IP_VER_6 ? IPV6_TRAFFIC_CLASS(ip_body) : 0) 1466dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt 14738eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt/* IPV6 extension headers (options) */ 14838eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt#define IPV6_EXTHDR_HOP 0 14938eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt#define IPV6_EXTHDR_ROUTING 43 15038eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt#define IPV6_EXTHDR_FRAGMENT 44 15138eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt#define IPV6_EXTHDR_AUTH 51 15238eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt#define IPV6_EXTHDR_NONE 59 15338eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt#define IPV6_EXTHDR_DEST 60 15438eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt 15538eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt#define IPV6_EXTHDR(prot) (((prot) == IPV6_EXTHDR_HOP) || \ 15638eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt ((prot) == IPV6_EXTHDR_ROUTING) || \ 15738eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt ((prot) == IPV6_EXTHDR_FRAGMENT) || \ 15838eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt ((prot) == IPV6_EXTHDR_AUTH) || \ 15938eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt ((prot) == IPV6_EXTHDR_NONE) || \ 16038eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt ((prot) == IPV6_EXTHDR_DEST)) 16138eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt 16238eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt#define IPV6_MIN_HLEN 40 16338eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt 16438eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt#define IPV6_EXTHDR_LEN(eh) ((((struct ipv6_exthdr *)(eh))->hdrlen + 1) << 3) 1656dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt 16638eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry ShmidtBWL_PRE_PACKED_STRUCT struct ipv6_exthdr { 16738eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt uint8 nexthdr; 16838eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt uint8 hdrlen; 16938eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt} BWL_POST_PACKED_STRUCT; 17038eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt 17138eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry ShmidtBWL_PRE_PACKED_STRUCT struct ipv6_exthdr_frag { 17238eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt uint8 nexthdr; 17338eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt uint8 rsvd; 17438eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt uint16 frag_off; 17538eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt uint32 ident; 17638eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt} BWL_POST_PACKED_STRUCT; 17738eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt 17838eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidtstatic INLINE int32 17938eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidtipv6_exthdr_len(uint8 *h, uint8 *proto) 18038eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt{ 18138eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt uint16 len = 0, hlen; 18238eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt struct ipv6_exthdr *eh = (struct ipv6_exthdr *)h; 18338eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt 18438eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt while (IPV6_EXTHDR(eh->nexthdr)) { 18538eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt if (eh->nexthdr == IPV6_EXTHDR_NONE) 18638eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt return -1; 18738eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt else if (eh->nexthdr == IPV6_EXTHDR_FRAGMENT) 18838eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt hlen = 8; 18938eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt else if (eh->nexthdr == IPV6_EXTHDR_AUTH) 19038eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt hlen = (eh->hdrlen + 2) << 2; 19138eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt else 19238eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt hlen = IPV6_EXTHDR_LEN(eh); 19338eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt 19438eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt len += hlen; 19538eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt eh = (struct ipv6_exthdr *)(h + len); 19638eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt } 19738eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt 19838eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt *proto = eh->nexthdr; 19938eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt return len; 20038eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt} 20138eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt 20238eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt#define IPV4_ISMULTI(a) (((a) & 0xf0000000) == 0xe0000000) 20338eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt 20438eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt/* This marks the end of a packed structure section. */ 2056dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt#include <packed_section_end.h> 2066dbcf2181152a81ab5f3bc5fa765288341a1b7abDmitry Shmidt 20738eaaf5a34502fe465cf8b6ac7a2dfcafa17ba41Dmitry Shmidt#endif /* _bcmip_h_ */ 208