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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     u_int8_t  rpl_sec_ki[0];          /* depends upon kim */
  49 } PACKED;
  50
  51 /* section 6.2.1, DODAG Information Solication (DIS_IS) */
  52 struct nd_rpl_dis_is {
  53     u_int8_t rpl_dis_flags;
  54     u_int8_t rpl_dis_reserved;
  55     u_int8_t rpl_dis_options[0];
  56 } PACKED;
  57
  58 /* section 6.3.1, DODAG Information Object (DIO) */
  59 struct nd_rpl_dio {
  60     u_int8_t  rpl_instanceid;
  61     u_int8_t  rpl_version;
  62     u_int16_t rpl_dagrank;
  63     u_int8_t  rpl_mopprf;   /* bit 7=G, 5-3=MOP, 2-0=PRF */
  64     u_int8_t  rpl_dtsn;     /* Dest. Advertisement Trigger Sequence Number */
  65     u_int8_t  rpl_flags;    /* no flags defined yet */
  66     u_int8_t  rpl_resv1;
  67     u_int8_t  rpl_dagid[DAGID_LEN];
  68 } PACKED;
  69 #define RPL_DIO_GROUND_FLAG 0x80
  70 #define RPL_DIO_MOP_SHIFT   3
  71 #define RPL_DIO_MOP_MASK    (7 << RPL_DIO_MOP_SHIFT)
  72 #define RPL_DIO_PRF_SHIFT   0
  73 #define RPL_DIO_PRF_MASK    (7 << RPL_DIO_PRF_SHIFT)
  74 #define RPL_DIO_GROUNDED(X) ((X)&RPL_DIO_GROUND_FLAG)
  75 #define RPL_DIO_MOP(X)      (enum RPL_DIO_MOP)(((X)&RPL_DIO_MOP_MASK) >> RPL_DIO_MOP_SHIFT)
  76 #define RPL_DIO_PRF(X)      (((X)&RPL_DIO_PRF_MASK) >> RPL_DIO_PRF_SHIFT)
  77
  78 enum RPL_DIO_MOP {
  79     RPL_DIO_NONSTORING= 0x0,
  80     RPL_DIO_STORING   = 0x1,
  81     RPL_DIO_NONSTORING_MULTICAST = 0x2,
  82     RPL_DIO_STORING_MULTICAST    = 0x3,
  83 };
  84
  85 enum RPL_SUBOPT {
  86         RPL_OPT_PAD0        = 0,
  87         RPL_OPT_PADN        = 1,
  88         RPL_DIO_METRICS     = 2,
  89         RPL_DIO_ROUTINGINFO = 3,
  90         RPL_DIO_CONFIG      = 4,
  91         RPL_DAO_RPLTARGET   = 5,
  92         RPL_DAO_TRANSITINFO = 6,
  93         RPL_DIO_DESTPREFIX  = 8,
  94         RPL_DAO_RPLTARGET_DESC=9,
  95 };
  96
  97 struct rpl_dio_genoption {
  98     u_int8_t rpl_dio_type;
  99     u_int8_t rpl_dio_len;        /* suboption length, not including type/len */
 100     u_int8_t rpl_dio_data[0];
 101 } PACKED;
 102
 103 #define RPL_DIO_LIFETIME_INFINITE   0xffffffff
 104 #define RPL_DIO_LIFETIME_DISCONNECT 0
 105
 106 struct rpl_dio_destprefix {
 107     u_int8_t rpl_dio_type;
 108     u_int8_t rpl_dio_len;
 109     u_int8_t rpl_dio_prefixlen;        /* in bits */
 110     u_int8_t rpl_dio_prf;              /* flags, including Route Preference */
 111     u_int32_t rpl_dio_prefixlifetime;  /* in seconds */
 112     u_int8_t rpl_dio_prefix[0];        /* variables number of bytes */
 113 } PACKED;
 114
 115 /* section 6.4.1, DODAG Information Object (DIO) */
 116 struct nd_rpl_dao {
 117     u_int8_t  rpl_instanceid;
 118     u_int8_t  rpl_flags;      /* bit 7=K, 6=D */
 119     u_int8_t  rpl_resv;
 120     u_int8_t  rpl_daoseq;
 121     u_int8_t  rpl_dagid[0];   /* [DAGID_LEN] present when D set. */
 122 } PACKED;
 123
 124 /* indicates if this DAO is to be acK'ed */
 125 #define RPL_DAO_K_SHIFT   7
 126 #define RPL_DAO_K_MASK    (1 << RPL_DAO_K_SHIFT)
 127 #define RPL_DAO_K(X)      (((X)&RPL_DAO_K_MASK) >> RPL_DAO_K_SHIFT)
 128
 129 /* indicates if the DAGID is present */
 130 #define RPL_DAO_D_SHIFT   6
 131 #define RPL_DAO_D_MASK    (1 << RPL_DAO_D_SHIFT)
 132 #define RPL_DAO_D(X)      (((X)&RPL_DAO_D_MASK) >> RPL_DAO_D_SHIFT)
 133
 134 struct rpl_dao_target {
 135     u_int8_t rpl_dao_type;
 136     u_int8_t rpl_dao_len;
 137     u_int8_t rpl_dao_flags;            /* unused */
 138     u_int8_t rpl_dao_prefixlen;        /* in bits */
 139     u_int8_t rpl_dao_prefix[0];        /* variables number of bytes */
 140 } PACKED;
 141
 142 /* section 6.5.1, Destination Advertisement Object Acknowledgement (DAO-ACK) */
 143 struct nd_rpl_daoack {
 144     u_int8_t  rpl_instanceid;
 145     u_int8_t  rpl_flags;      /* bit 7=D */
 146     u_int8_t  rpl_daoseq;
 147     u_int8_t  rpl_status;
 148     u_int8_t  rpl_dagid[0];   /* [DAGID_LEN] present when D set. */
 149 } PACKED;
 150 /* indicates if the DAGID is present */
 151 #define RPL_DAOACK_D_SHIFT   7
 152 #define RPL_DAOACK_D_MASK    (1 << RPL_DAOACK_D_SHIFT)
 153 #define RPL_DAOACK_D(X)      (((X)&RPL_DAOACK_D_MASK) >> RPL_DAOACK_D_SHIFT)
 154
 155
 156
 157 #define _RPL_H_
 158 #endif /* _RPL_H_ */
 159
 160 /*
 161  * Local Variables:
 162  * c-basic-offset:4
 163  * c-style: whitesmith
 164  * End:
 165  */
 166