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   1 #ifndef _RPL_H_
   2
   3 /*
   4  * NOTE: the contents of this file are an interpretation of RFC6550.
   5  *       no copyright is asserted on this file, as it transcribes
   6  *       a public specification.
   7  *
   8  */
   9
  10 #define PACKED __attribute__((packed))
  11
  12 /*
  13  * DIO: Updated to RFC6550, as published in 2012: section 6. (page 30)
  14  */
  15
  16 #define ND_RPL_MESSAGE 155  /* 0x9B */
  17
  18 enum ND_RPL_CODE {
  19     ND_RPL_DAG_IS=0x00,
  20     ND_RPL_DAG_IO=0x01,
  21     ND_RPL_DAO   =0x02,
  22     ND_RPL_DAO_ACK=0x03,
  23     ND_RPL_SEC_DAG_IS = 0x80,
  24     ND_RPL_SEC_DAG_IO = 0x81,
  25     ND_RPL_SEC_DAG    = 0x82,
  26     ND_RPL_SEC_DAG_ACK= 0x83,
  27     ND_RPL_SEC_CONSIST= 0x84,
  28 };
  29
  30 enum ND_RPL_DIO_FLAGS {
  31         ND_RPL_DIO_GROUNDED = 0x80,
  32         ND_RPL_DIO_DATRIG   = 0x40,
  33         ND_RPL_DIO_DASUPPORT= 0x20,
  34         ND_RPL_DIO_RES4     = 0x10,
  35         ND_RPL_DIO_RES3     = 0x08,
  36         ND_RPL_DIO_PRF_MASK = 0x07,  /* 3-bit preference */
  37 };
  38
  39 #define DAGID_LEN 16
  40
  41 /* section 6 of draft-ietf-roll-rpl-19 */
  42 struct nd_rpl_security {
  43     u_int8_t  rpl_sec_t_reserved;     /* bit 7 is T-bit */
  44     u_int8_t  rpl_sec_algo;
  45     u_int16_t rpl_sec_kim_lvl_flags;  /* bit 15/14, KIM */
  46                                       /* bit 10-8, LVL, bit 7-0 flags */
  47     u_int32_t rpl_sec_counter;
  48 #if 0
  49     u_int8_t  rpl_sec_ki[0];          /* depends upon kim */
  50 #endif
  51 };
  52
  53 /* section 6.2.1, DODAG Information Solication (DIS_IS) */
  54 struct nd_rpl_dis_is {
  55     u_int8_t rpl_dis_flags;
  56     u_int8_t rpl_dis_reserved;
  57 #if 0
  58     u_int8_t rpl_dis_options[0];
  59 #endif
  60 };
  61
  62 /* section 6.3.1, DODAG Information Object (DIO) */
  63 struct nd_rpl_dio {
  64     u_int8_t  rpl_instanceid;
  65     u_int8_t  rpl_version;
  66     u_int16_t rpl_dagrank;
  67     u_int8_t  rpl_mopprf;   /* bit 7=G, 5-3=MOP, 2-0=PRF */
  68     u_int8_t  rpl_dtsn;     /* Dest. Advertisement Trigger Sequence Number */
  69     u_int8_t  rpl_flags;    /* no flags defined yet */
  70     u_int8_t  rpl_resv1;
  71     u_int8_t  rpl_dagid[DAGID_LEN];
  72 };
  73 #define RPL_DIO_GROUND_FLAG 0x80
  74 #define RPL_DIO_MOP_SHIFT   3
  75 #define RPL_DIO_MOP_MASK    (7 << RPL_DIO_MOP_SHIFT)
  76 #define RPL_DIO_PRF_SHIFT   0
  77 #define RPL_DIO_PRF_MASK    (7 << RPL_DIO_PRF_SHIFT)
  78 #define RPL_DIO_GROUNDED(X) ((X)&RPL_DIO_GROUND_FLAG)
  79 #define RPL_DIO_MOP(X)      (enum RPL_DIO_MOP)(((X)&RPL_DIO_MOP_MASK) >> RPL_DIO_MOP_SHIFT)
  80 #define RPL_DIO_PRF(X)      (((X)&RPL_DIO_PRF_MASK) >> RPL_DIO_PRF_SHIFT)
  81
  82 enum RPL_DIO_MOP {
  83     RPL_DIO_NONSTORING= 0x0,
  84     RPL_DIO_STORING   = 0x1,
  85     RPL_DIO_NONSTORING_MULTICAST = 0x2,
  86     RPL_DIO_STORING_MULTICAST    = 0x3,
  87 };
  88
  89 enum RPL_SUBOPT {
  90         RPL_OPT_PAD0        = 0,
  91         RPL_OPT_PADN        = 1,
  92         RPL_DIO_METRICS     = 2,
  93         RPL_DIO_ROUTINGINFO = 3,
  94         RPL_DIO_CONFIG      = 4,
  95         RPL_DAO_RPLTARGET   = 5,
  96         RPL_DAO_TRANSITINFO = 6,
  97         RPL_DIO_DESTPREFIX  = 8,
  98         RPL_DAO_RPLTARGET_DESC=9,
  99 };
 100
 101 struct rpl_dio_genoption {
 102     u_int8_t rpl_dio_type;
 103     u_int8_t rpl_dio_len;        /* suboption length, not including type/len */
 104 };
 105 #define RPL_DIO_GENOPTION_LEN   2
 106
 107 #define RPL_DIO_LIFETIME_INFINITE   0xffffffff
 108 #define RPL_DIO_LIFETIME_DISCONNECT 0
 109
 110 struct rpl_dio_destprefix {
 111     u_int8_t rpl_dio_type;
 112     u_int8_t rpl_dio_len;
 113     u_int8_t rpl_dio_prefixlen;        /* in bits */
 114     u_int8_t rpl_dio_prf;              /* flags, including Route Preference */
 115     u_int32_t rpl_dio_prefixlifetime;  /* in seconds */
 116 #if 0
 117     u_int8_t rpl_dio_prefix[0];        /* variable number of bytes */
 118 #endif
 119 };
 120
 121 /* section 6.4.1, DODAG Information Object (DIO) */
 122 struct nd_rpl_dao {
 123     u_int8_t  rpl_instanceid;
 124     u_int8_t  rpl_flags;      /* bit 7=K, 6=D */
 125     u_int8_t  rpl_resv;
 126     u_int8_t  rpl_daoseq;
 127     u_int8_t  rpl_dagid[DAGID_LEN];   /* present when D set. */
 128 };
 129 #define ND_RPL_DAO_MIN_LEN      4       /* length without DAGID */
 130
 131 /* indicates if this DAO is to be acK'ed */
 132 #define RPL_DAO_K_SHIFT   7
 133 #define RPL_DAO_K_MASK    (1 << RPL_DAO_K_SHIFT)
 134 #define RPL_DAO_K(X)      (((X)&RPL_DAO_K_MASK) >> RPL_DAO_K_SHIFT)
 135
 136 /* indicates if the DAGID is present */
 137 #define RPL_DAO_D_SHIFT   6
 138 #define RPL_DAO_D_MASK    (1 << RPL_DAO_D_SHIFT)
 139 #define RPL_DAO_D(X)      (((X)&RPL_DAO_D_MASK) >> RPL_DAO_D_SHIFT)
 140
 141 struct rpl_dao_target {
 142     u_int8_t rpl_dao_type;
 143     u_int8_t rpl_dao_len;
 144     u_int8_t rpl_dao_flags;            /* unused */
 145     u_int8_t rpl_dao_prefixlen;        /* in bits */
 146 #if 0
 147     u_int8_t rpl_dao_prefix[0];        /* variable number of bytes */
 148 #endif
 149 };
 150
 151 /* section 6.5.1, Destination Advertisement Object Acknowledgement (DAO-ACK) */
 152 struct nd_rpl_daoack {
 153     u_int8_t  rpl_instanceid;
 154     u_int8_t  rpl_flags;      /* bit 7=D */
 155     u_int8_t  rpl_daoseq;
 156     u_int8_t  rpl_status;
 157     u_int8_t  rpl_dagid[DAGID_LEN];   /* present when D set. */
 158 };
 159 #define ND_RPL_DAOACK_MIN_LEN   4       /* length without DAGID */
 160 /* indicates if the DAGID is present */
 161 #define RPL_DAOACK_D_SHIFT   7
 162 #define RPL_DAOACK_D_MASK    (1 << RPL_DAOACK_D_SHIFT)
 163 #define RPL_DAOACK_D(X)      (((X)&RPL_DAOACK_D_MASK) >> RPL_DAOACK_D_SHIFT)
 164
 165
 166
 167 #define _RPL_H_
 168 #endif /* _RPL_H_ */
 169
 170 /*
 171  * Local Variables:
 172  * c-basic-offset:4
 173  * c-style: whitesmith
 174  * End:
 175  */
 176