| /* |
| * From FreeBSD 2.2.7: Fundamental constants relating to ethernet. |
| * |
| * Copyright (C) 2020, Broadcom. |
| * |
| * Unless you and Broadcom execute a separate written software license |
| * agreement governing use of this software, this software is licensed to you |
| * under the terms of the GNU General Public License version 2 (the "GPL"), |
| * available at http://www.broadcom.com/licenses/GPLv2.php, with the |
| * following added to such license: |
| * |
| * As a special exception, the copyright holders of this software give you |
| * permission to link this software with independent modules, and to copy and |
| * distribute the resulting executable under terms of your choice, provided that |
| * you also meet, for each linked independent module, the terms and conditions of |
| * the license of that module. An independent module is a module which is not |
| * derived from this software. The special exception does not apply to any |
| * modifications of the software. |
| * |
| * |
| * <<Broadcom-WL-IPTag/Dual:>> |
| */ |
| |
| #ifndef _NET_ETHERNET_H_ /* use native BSD ethernet.h when available */ |
| #define _NET_ETHERNET_H_ |
| |
| #ifndef _TYPEDEFS_H_ |
| #include "typedefs.h" |
| #endif |
| |
| /* This marks the start of a packed structure section. */ |
| #include <packed_section_start.h> |
| |
| /* |
| * The number of bytes in an ethernet (MAC) address. |
| */ |
| #define ETHER_ADDR_LEN 6 |
| |
| /* |
| * The number of bytes in the type field. |
| */ |
| #define ETHER_TYPE_LEN 2 |
| |
| /* |
| * The number of bytes in the trailing CRC field. |
| */ |
| #define ETHER_CRC_LEN 4 |
| |
| /* |
| * The length of the combined header. |
| */ |
| #define ETHER_HDR_LEN (ETHER_ADDR_LEN * 2 + ETHER_TYPE_LEN) |
| |
| /* |
| * The minimum packet length. |
| */ |
| #define ETHER_MIN_LEN 64 |
| |
| /* |
| * The minimum packet user data length. |
| */ |
| #define ETHER_MIN_DATA 46 |
| |
| /* |
| * The maximum packet length. |
| */ |
| #define ETHER_MAX_LEN 1518 |
| |
| /* |
| * The maximum packet user data length. |
| */ |
| #define ETHER_MAX_DATA 1500 |
| |
| /* ether types */ |
| #define ETHER_TYPE_MIN 0x0600 /* Anything less than MIN is a length */ |
| #define ETHER_TYPE_IP 0x0800 /* IP */ |
| #define ETHER_TYPE_ARP 0x0806 /* ARP */ |
| #define ETHER_TYPE_8021Q 0x8100 /* 802.1Q */ |
| #define ETHER_TYPE_IPV6 0x86dd /* IPv6 */ |
| #define ETHER_TYPE_BRCM 0x886c /* Broadcom Corp. */ |
| #define ETHER_TYPE_802_1X 0x888e /* 802.1x */ |
| #define ETHER_TYPE_802_1X_PREAUTH 0x88c7 /* 802.1x preauthentication */ |
| #define ETHER_TYPE_WAI 0x88b4 /* WAI */ |
| #define ETHER_TYPE_89_0D 0x890d /* 89-0d frame for TDLS */ |
| #define ETHER_TYPE_RRB ETHER_TYPE_89_0D /* RRB 802.11r 2008 */ |
| #define ETHER_TYPE_1905_1 0x893a /* IEEE 1905.1 MCDU */ |
| |
| #define ETHER_TYPE_PPP_SES 0x8864 /* PPPoE Session */ |
| |
| #define ETHER_TYPE_IAPP_L2_UPDATE 0x6 /* IAPP L2 update frame */ |
| |
| /* Broadcom subtype follows ethertype; First 2 bytes are reserved; Next 2 are subtype; */ |
| #define ETHER_BRCM_SUBTYPE_LEN 4 /* Broadcom 4 byte subtype */ |
| |
| /* ether header */ |
| #define ETHER_DEST_OFFSET (0 * ETHER_ADDR_LEN) /* dest address offset */ |
| #define ETHER_SRC_OFFSET (1 * ETHER_ADDR_LEN) /* src address offset */ |
| #define ETHER_TYPE_OFFSET (2 * ETHER_ADDR_LEN) /* ether type offset */ |
| |
| /* |
| * A macro to validate a length with |
| */ |
| #define ETHER_IS_VALID_LEN(foo) \ |
| ((foo) >= ETHER_MIN_LEN && (foo) <= ETHER_MAX_LEN) |
| |
| #define ETHER_FILL_MCAST_ADDR_FROM_IP(ea, mgrp_ip) { \ |
| ((uint8 *)ea)[0] = 0x01; \ |
| ((uint8 *)ea)[1] = 0x00; \ |
| ((uint8 *)ea)[2] = 0x5e; \ |
| ((uint8 *)ea)[3] = ((mgrp_ip) >> 16) & 0x7f; \ |
| ((uint8 *)ea)[4] = ((mgrp_ip) >> 8) & 0xff; \ |
| ((uint8 *)ea)[5] = ((mgrp_ip) >> 0) & 0xff; \ |
| } |
| |
| #ifndef __INCif_etherh /* Quick and ugly hack for VxWorks */ |
| /* |
| * Structure of a 10Mb/s Ethernet header. |
| */ |
| BWL_PRE_PACKED_STRUCT struct ether_header { |
| uint8 ether_dhost[ETHER_ADDR_LEN]; |
| uint8 ether_shost[ETHER_ADDR_LEN]; |
| uint16 ether_type; |
| } BWL_POST_PACKED_STRUCT; |
| |
| /* |
| * Structure of a 48-bit Ethernet address. |
| */ |
| BWL_PRE_PACKED_STRUCT struct ether_addr { |
| uint8 octet[ETHER_ADDR_LEN]; |
| } BWL_POST_PACKED_STRUCT; |
| #endif /* __INCif_etherh */ |
| #ifdef __INCif_etherh |
| #endif /* !__INCif_etherh Quick and ugly hack for VxWorks */ |
| |
| /* |
| * Takes a pointer, set, test, clear, toggle locally admininistered |
| * address bit in the 48-bit Ethernet address. |
| */ |
| #define ETHER_SET_LOCALADDR(ea) (((uint8 *)(ea))[0] = (((uint8 *)(ea))[0] | 2)) |
| #define ETHER_IS_LOCALADDR(ea) (((uint8 *)(ea))[0] & 2) |
| #define ETHER_CLR_LOCALADDR(ea) (((uint8 *)(ea))[0] = (((uint8 *)(ea))[0] & 0xfd)) |
| #define ETHER_TOGGLE_LOCALADDR(ea) (((uint8 *)(ea))[0] = (((uint8 *)(ea))[0] ^ 2)) |
| |
| /* Takes a pointer, marks unicast address bit in the MAC address */ |
| #define ETHER_SET_UNICAST(ea) (((uint8 *)(ea))[0] = (((uint8 *)(ea))[0] & ~1)) |
| |
| /* |
| * Takes a pointer, returns true if a 48-bit multicast address |
| * (including broadcast, since it is all ones) |
| */ |
| #define ETHER_ISMULTI(ea) (((const uint8 *)(ea))[0] & 1) |
| |
| /* compare two ethernet addresses - assumes the pointers can be referenced as shorts */ |
| #if defined(DONGLEBUILD) && defined(__ARM_ARCH_7A__) && !defined(BCMFUZZ) |
| #define eacmp(a, b) (((*(const uint32 *)(a)) ^ (*(const uint32 *)(b))) || \ |
| ((*(const uint16 *)(((const uint8 *)(a)) + 4)) ^ \ |
| (*(const uint16 *)(((const uint8 *)(b)) + 4)))) |
| |
| #define ehcmp(a, b) ((((const uint32 *)(a))[0] ^ ((const uint32 *)(b))[0]) || \ |
| (((const uint32 *)(a))[1] ^ ((const uint32 *)(b))[1]) || \ |
| (((const uint32 *)(a))[2] ^ ((const uint32 *)(b))[2]) || \ |
| ((*(const uint16 *)(((const uint32 *)(a)) + 3)) ^ \ |
| (*(const uint16 *)(((const uint32 *)(b)) + 3)))) |
| #else |
| #define eacmp(a, b) ((((const uint16 *)(a))[0] ^ ((const uint16 *)(b))[0]) | \ |
| (((const uint16 *)(a))[1] ^ ((const uint16 *)(b))[1]) | \ |
| (((const uint16 *)(a))[2] ^ ((const uint16 *)(b))[2])) |
| |
| #define ehcmp(a, b) ((((const uint16 *)(a))[0] ^ ((const uint16 *)(b))[0]) | \ |
| (((const uint16 *)(a))[1] ^ ((const uint16 *)(b))[1]) | \ |
| (((const uint16 *)(a))[2] ^ ((const uint16 *)(b))[2]) | \ |
| (((const uint16 *)(a))[3] ^ ((const uint16 *)(b))[3]) | \ |
| (((const uint16 *)(a))[4] ^ ((const uint16 *)(b))[4]) | \ |
| (((const uint16 *)(a))[5] ^ ((const uint16 *)(b))[5]) | \ |
| (((const uint16 *)(a))[6] ^ ((const uint16 *)(b))[6])) |
| #endif /* DONGLEBUILD && __ARM_ARCH_7A__ */ |
| |
| #define ether_cmp(a, b) eacmp(a, b) |
| |
| /* copy an ethernet address - assumes the pointers can be referenced as shorts */ |
| #if defined(DONGLEBUILD) && defined(__ARM_ARCH_7A__) && !defined(BCMFUZZ) |
| #define eacopy(s, d) \ |
| do { \ |
| (*(uint32 *)(d)) = (*(const uint32 *)(s)); \ |
| (*(uint16 *)(((uint8 *)(d)) + 4)) = (*(const uint16 *)(((const uint8 *)(s)) + 4)); \ |
| } while (0) |
| #else |
| #define eacopy(s, d) \ |
| do { \ |
| ((uint16 *)(d))[0] = ((const uint16 *)(s))[0]; \ |
| ((uint16 *)(d))[1] = ((const uint16 *)(s))[1]; \ |
| ((uint16 *)(d))[2] = ((const uint16 *)(s))[2]; \ |
| } while (0) |
| #endif /* DONGLEBUILD && __ARM_ARCH_7A__ */ |
| |
| #define ether_copy(s, d) eacopy(s, d) |
| |
| /* Copy an ethernet address in reverse order */ |
| #define ether_rcopy(s, d) \ |
| do { \ |
| ((uint16 *)(d))[2] = ((uint16 *)(s))[2]; \ |
| ((uint16 *)(d))[1] = ((uint16 *)(s))[1]; \ |
| ((uint16 *)(d))[0] = ((uint16 *)(s))[0]; \ |
| } while (0) |
| |
| /* Copy 14B ethernet header: 32bit aligned source and destination. */ |
| #define ehcopy32(s, d) \ |
| do { \ |
| ((uint32 *)(d))[0] = ((const uint32 *)(s))[0]; \ |
| ((uint32 *)(d))[1] = ((const uint32 *)(s))[1]; \ |
| ((uint32 *)(d))[2] = ((const uint32 *)(s))[2]; \ |
| ((uint16 *)(d))[6] = ((const uint16 *)(s))[6]; \ |
| } while (0) |
| |
| /* Dongles use bcmutils functions instead of macros. |
| * Possibly slower but saves over 800 bytes off THUMB dongle image. |
| */ |
| |
| extern const struct ether_addr ether_bcast; |
| extern const struct ether_addr ether_null; |
| extern const struct ether_addr ether_ipv6_mcast; |
| |
| extern int ether_isbcast(const void *ea); |
| extern int ether_isnulladdr(const void *ea); |
| |
| #define ETHER_ISBCAST(ea) ether_isbcast(ea) |
| |
| #if defined(__ARM_ARCH_7A__) && !defined(BCMFUZZ) |
| #define ETHER_ISNULLADDR(ea) (((*(const uint32 *)(ea)) | \ |
| (*(const uint16 *)(((const uint8 *)(ea)) + 4))) == 0) |
| #else |
| #define ETHER_ISNULLADDR(ea) ether_isnulladdr(ea) |
| #endif /* __ARM_ARCH_7A__ */ |
| |
| #define ETHER_ISNULLDEST(da) ((((const uint16 *)(da))[0] | \ |
| ((const uint16 *)(da))[1] | \ |
| ((const uint16 *)(da))[2]) == 0) |
| #define ETHER_ISNULLSRC(sa) ETHER_ISNULLDEST(sa) |
| |
| #define ETHER_MOVE_HDR(d, s) \ |
| do { \ |
| struct ether_header t; \ |
| t = *(struct ether_header *)(s); \ |
| *(struct ether_header *)(d) = t; \ |
| } while (0) |
| |
| #define ETHER_ISUCAST(ea) ((((uint8 *)(ea))[0] & 0x01) == 0) |
| |
| /* This marks the end of a packed structure section. */ |
| #include <packed_section_end.h> |
| |
| #endif /* _NET_ETHERNET_H_ */ |