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Diffstat (limited to 'src/common/include/proto/bcmip.h')
| -rw-r--r-- | src/common/include/proto/bcmip.h | 196 |
1 files changed, 196 insertions, 0 deletions
diff --git a/src/common/include/proto/bcmip.h b/src/common/include/proto/bcmip.h new file mode 100644 index 0000000..50ce97d --- /dev/null +++ b/src/common/include/proto/bcmip.h @@ -0,0 +1,196 @@ +/* + * Copyright (C) 2015, Broadcom Corporation. All Rights Reserved. + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION + * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN + * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + * Fundamental constants relating to IP Protocol + * + * $Id: bcmip.h 329791 2012-04-26 22:36:58Z $ + */ + +#ifndef _bcmip_h_ +#define _bcmip_h_ + +#ifndef _TYPEDEFS_H_ +#include <typedefs.h> +#endif + +#include <packed_section_start.h> + +#define IP_VER_OFFSET 0x0 +#define IP_VER_MASK 0xf0 +#define IP_VER_SHIFT 4 +#define IP_VER_4 4 +#define IP_VER_6 6 + +#define IP_VER(ip_body) \ + ((((uint8 *)(ip_body))[IP_VER_OFFSET] & IP_VER_MASK) >> IP_VER_SHIFT) + +#define IP_PROT_ICMP 0x1 +#define IP_PROT_IGMP 0x2 +#define IP_PROT_TCP 0x6 +#define IP_PROT_UDP 0x11 +#define IP_PROT_ICMP6 0x3a + +#define IPV4_VER_HL_OFFSET 0 +#define IPV4_TOS_OFFSET 1 +#define IPV4_PKTLEN_OFFSET 2 +#define IPV4_PKTFLAG_OFFSET 6 +#define IPV4_PROT_OFFSET 9 +#define IPV4_CHKSUM_OFFSET 10 +#define IPV4_SRC_IP_OFFSET 12 +#define IPV4_DEST_IP_OFFSET 16 +#define IPV4_OPTIONS_OFFSET 20 +#define IPV4_MIN_HEADER_LEN 20 + +#define IPV4_VER_MASK 0xf0 +#define IPV4_VER_SHIFT 4 + +#define IPV4_HLEN_MASK 0x0f +#define IPV4_HLEN(ipv4_body) (4 * (((uint8 *)(ipv4_body))[IPV4_VER_HL_OFFSET] & IPV4_HLEN_MASK)) + +#define IPV4_ADDR_LEN 4 + +#define IPV4_ADDR_NULL(a) ((((uint8 *)(a))[0] | ((uint8 *)(a))[1] | \ + ((uint8 *)(a))[2] | ((uint8 *)(a))[3]) == 0) + +#define IPV4_ADDR_BCAST(a) ((((uint8 *)(a))[0] & ((uint8 *)(a))[1] & \ + ((uint8 *)(a))[2] & ((uint8 *)(a))[3]) == 0xff) + +#define IPV4_TOS_DSCP_MASK 0xfc +#define IPV4_TOS_DSCP_SHIFT 2 + +#define IPV4_TOS(ipv4_body) (((uint8 *)(ipv4_body))[IPV4_TOS_OFFSET]) + +#define IPV4_TOS_PREC_MASK 0xe0 +#define IPV4_TOS_PREC_SHIFT 5 + +#define IPV4_TOS_LOWDELAY 0x10 +#define IPV4_TOS_THROUGHPUT 0x8 +#define IPV4_TOS_RELIABILITY 0x4 + +#define IPV4_PROT(ipv4_body) (((uint8 *)(ipv4_body))[IPV4_PROT_OFFSET]) + +#define IPV4_FRAG_RESV 0x8000 +#define IPV4_FRAG_DONT 0x4000 +#define IPV4_FRAG_MORE 0x2000 +#define IPV4_FRAG_OFFSET_MASK 0x1fff + +#define IPV4_ADDR_STR_LEN 16 + +BWL_PRE_PACKED_STRUCT struct ipv4_addr { + uint8 addr[IPV4_ADDR_LEN]; +} BWL_POST_PACKED_STRUCT; + +BWL_PRE_PACKED_STRUCT struct ipv4_hdr { + uint8 version_ihl; + uint8 tos; + uint16 tot_len; + uint16 id; + uint16 frag; + uint8 ttl; + uint8 prot; + uint16 hdr_chksum; + uint8 src_ip[IPV4_ADDR_LEN]; + uint8 dst_ip[IPV4_ADDR_LEN]; +} BWL_POST_PACKED_STRUCT; + +#define IPV6_PAYLOAD_LEN_OFFSET 4 +#define IPV6_NEXT_HDR_OFFSET 6 +#define IPV6_HOP_LIMIT_OFFSET 7 +#define IPV6_SRC_IP_OFFSET 8 +#define IPV6_DEST_IP_OFFSET 24 + +#define IPV6_TRAFFIC_CLASS(ipv6_body) \ + (((((uint8 *)(ipv6_body))[0] & 0x0f) << 4) | \ + ((((uint8 *)(ipv6_body))[1] & 0xf0) >> 4)) + +#define IPV6_FLOW_LABEL(ipv6_body) \ + (((((uint8 *)(ipv6_body))[1] & 0x0f) << 16) | \ + (((uint8 *)(ipv6_body))[2] << 8) | \ + (((uint8 *)(ipv6_body))[3])) + +#define IPV6_PAYLOAD_LEN(ipv6_body) \ + ((((uint8 *)(ipv6_body))[IPV6_PAYLOAD_LEN_OFFSET + 0] << 8) | \ + ((uint8 *)(ipv6_body))[IPV6_PAYLOAD_LEN_OFFSET + 1]) + +#define IPV6_NEXT_HDR(ipv6_body) \ + (((uint8 *)(ipv6_body))[IPV6_NEXT_HDR_OFFSET]) + +#define IPV6_PROT(ipv6_body) IPV6_NEXT_HDR(ipv6_body) + +#define IPV6_ADDR_LEN 16 + +#define IP_TOS46(ip_body) \ + (IP_VER(ip_body) == IP_VER_4 ? IPV4_TOS(ip_body) : \ + IP_VER(ip_body) == IP_VER_6 ? IPV6_TRAFFIC_CLASS(ip_body) : 0) + +#define IPV6_EXTHDR_HOP 0 +#define IPV6_EXTHDR_ROUTING 43 +#define IPV6_EXTHDR_FRAGMENT 44 +#define IPV6_EXTHDR_AUTH 51 +#define IPV6_EXTHDR_NONE 59 +#define IPV6_EXTHDR_DEST 60 + +#define IPV6_EXTHDR(prot) (((prot) == IPV6_EXTHDR_HOP) || \ + ((prot) == IPV6_EXTHDR_ROUTING) || \ + ((prot) == IPV6_EXTHDR_FRAGMENT) || \ + ((prot) == IPV6_EXTHDR_AUTH) || \ + ((prot) == IPV6_EXTHDR_NONE) || \ + ((prot) == IPV6_EXTHDR_DEST)) + +#define IPV6_MIN_HLEN 40 + +#define IPV6_EXTHDR_LEN(eh) ((((struct ipv6_exthdr *)(eh))->hdrlen + 1) << 3) + +BWL_PRE_PACKED_STRUCT struct ipv6_exthdr { + uint8 nexthdr; + uint8 hdrlen; +} BWL_POST_PACKED_STRUCT; + +BWL_PRE_PACKED_STRUCT struct ipv6_exthdr_frag { + uint8 nexthdr; + uint8 rsvd; + uint16 frag_off; + uint32 ident; +} BWL_POST_PACKED_STRUCT; + +static INLINE int32 +ipv6_exthdr_len(uint8 *h, uint8 *proto) +{ + uint16 len = 0, hlen; + struct ipv6_exthdr *eh = (struct ipv6_exthdr *)h; + + while (IPV6_EXTHDR(eh->nexthdr)) { + if (eh->nexthdr == IPV6_EXTHDR_NONE) + return -1; + else if (eh->nexthdr == IPV6_EXTHDR_FRAGMENT) + hlen = 8; + else if (eh->nexthdr == IPV6_EXTHDR_AUTH) + hlen = (eh->hdrlen + 2) << 2; + else + hlen = IPV6_EXTHDR_LEN(eh); + + len += hlen; + eh = (struct ipv6_exthdr *)(h + len); + } + + *proto = eh->nexthdr; + return len; +} + +#define IPV4_ISMULTI(a) (((a) & 0xf0000000) == 0xe0000000) + +#include <packed_section_end.h> + +#endif |