release/src/include/proto/bcmeth.h

   1 /*
   2  * Broadcom Ethernettype  protocol definitions
   3  *
   4  * Copyright 2006, Broadcom Corporation
   5  * All Rights Reserved.
   6  *
   7  * THIS SOFTWARE IS OFFERED "AS IS", AND BROADCOM GRANTS NO WARRANTIES OF ANY
   8  * KIND, EXPRESS OR IMPLIED, BY STATUTE, COMMUNICATION OR OTHERWISE. BROADCOM
   9  * SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS
  10  * FOR A SPECIFIC PURPOSE OR NONINFRINGEMENT CONCERNING THIS SOFTWARE.
  11  *
  12  * $Id$
  13  */
  14
  15 /*
  16  * Broadcom Ethernet protocol defines
  17  */
  18
  19 #ifndef _BCMETH_H_
  20 #define _BCMETH_H_
  21
  22 /* enable structure packing */
  23 #if defined(__GNUC__)
  24 #define PACKED  __attribute__((packed))
  25 #else
  26 #pragma pack(1)
  27 #define PACKED
  28 #endif
  29
  30 /* ETHER_TYPE_BRCM is defined in ethernet.h */
  31
  32 /*
  33  * Following the 2byte BRCM ether_type is a 16bit BRCM subtype field
  34  * in one of two formats: (only subtypes 32768-65535 are in use now)
  35  *
  36  * subtypes 0-32767:
  37  *     8 bit subtype (0-127)
  38  *     8 bit length in bytes (0-255)
  39  *
  40  * subtypes 32768-65535:
  41  *     16 bit big-endian subtype
  42  *     16 bit big-endian length in bytes (0-65535)
  43  *
  44  * length is the number of additional bytes beyond the 4 or 6 byte header
  45  *
  46  * Reserved values:
  47  * 0 reserved
  48  * 5-15 reserved for iLine protocol assignments
  49  * 17-126 reserved, assignable
  50  * 127 reserved
  51  * 32768 reserved
  52  * 32769-65534 reserved, assignable
  53  * 65535 reserved
  54  */
  55
  56 /*
  57  * While adding the subtypes and their specific processing code make sure
  58  * bcmeth_bcm_hdr_t is the first data structure in the user specific data structure definition
  59  */
  60
  61 #define BCMILCP_SUBTYPE_RATE            1
  62 #define BCMILCP_SUBTYPE_LINK            2
  63 #define BCMILCP_SUBTYPE_CSA             3
  64 #define BCMILCP_SUBTYPE_LARQ            4
  65 #define BCMILCP_SUBTYPE_VENDOR          5
  66 #define BCMILCP_SUBTYPE_FLH             17
  67
  68 #define BCMILCP_SUBTYPE_VENDOR_LONG     32769
  69 #define BCMILCP_SUBTYPE_CERT            32770
  70 #define BCMILCP_SUBTYPE_SES             32771
  71
  72
  73 #define BCMILCP_BCM_SUBTYPE_RESERVED    0
  74 #define BCMILCP_BCM_SUBTYPE_EVENT               1
  75 #define BCMILCP_BCM_SUBTYPE_SES                 2
  76 /*
  77  * The EAPOL type is not used anymore. Instead EAPOL messages are now embedded
  78  * within BCMILCP_BCM_SUBTYPE_EVENT type messages
  79  */
  80 /* #define BCMILCP_BCM_SUBTYPE_EAPOL            3 */
  81
  82 #define BCMILCP_BCM_SUBTYPEHDR_MINLENGTH        8
  83 #define BCMILCP_BCM_SUBTYPEHDR_VERSION          0
  84
  85 /* These fields are stored in network order */
  86 typedef  struct bcmeth_hdr
  87 {
  88         uint16  subtype;        /* Vendor specific..32769 */
  89         uint16  length;
  90         uint8   version;        /* Version is 0 */
  91         uint8   oui[3];         /* Broadcom OUI */
  92         /* user specific Data */
  93         uint16  usr_subtype;
  94 } PACKED bcmeth_hdr_t;
  95
  96 #undef PACKED
  97 #if !defined(__GNUC__)
  98 #pragma pack()
  99 #endif
 100
 101 #endif  /*  _BCMETH_H_ */