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1 office 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 /*
11 * DIO: Updated to RFC6550, as published in 2012: section 6. (page 30)
12 */
13  
14 #define ND_RPL_MESSAGE 155 /* 0x9B */
15  
16 enum ND_RPL_CODE {
17 ND_RPL_DAG_IS=0x00,
18 ND_RPL_DAG_IO=0x01,
19 ND_RPL_DAO =0x02,
20 ND_RPL_DAO_ACK=0x03,
21 ND_RPL_SEC_DAG_IS = 0x80,
22 ND_RPL_SEC_DAG_IO = 0x81,
23 ND_RPL_SEC_DAG = 0x82,
24 ND_RPL_SEC_DAG_ACK= 0x83,
25 ND_RPL_SEC_CONSIST= 0x84,
26 };
27  
28 enum ND_RPL_DIO_FLAGS {
29 ND_RPL_DIO_GROUNDED = 0x80,
30 ND_RPL_DIO_DATRIG = 0x40,
31 ND_RPL_DIO_DASUPPORT= 0x20,
32 ND_RPL_DIO_RES4 = 0x10,
33 ND_RPL_DIO_RES3 = 0x08,
34 ND_RPL_DIO_PRF_MASK = 0x07, /* 3-bit preference */
35 };
36  
37 #define DAGID_LEN 16
38  
39 /* section 6 of draft-ietf-roll-rpl-19 */
40 struct nd_rpl_security {
41 uint8_t rpl_sec_t_reserved; /* bit 7 is T-bit */
42 uint8_t rpl_sec_algo;
43 uint16_t rpl_sec_kim_lvl_flags; /* bit 15/14, KIM */
44 /* bit 10-8, LVL, bit 7-0 flags */
45 uint32_t rpl_sec_counter;
46 #if 0
47 uint8_t rpl_sec_ki[0]; /* depends upon kim */
48 #endif
49 };
50  
51 /* section 6.2.1, DODAG Information Solication (DIS_IS) */
52 struct nd_rpl_dis_is {
53 uint8_t rpl_dis_flags;
54 uint8_t rpl_dis_reserved;
55 #if 0
56 uint8_t rpl_dis_options[0];
57 #endif
58 };
59  
60 /* section 6.3.1, DODAG Information Object (DIO) */
61 struct nd_rpl_dio {
62 uint8_t rpl_instanceid;
63 uint8_t rpl_version;
64 uint16_t rpl_dagrank;
65 uint8_t rpl_mopprf; /* bit 7=G, 5-3=MOP, 2-0=PRF */
66 uint8_t rpl_dtsn; /* Dest. Advertisement Trigger Sequence Number */
67 uint8_t rpl_flags; /* no flags defined yet */
68 uint8_t rpl_resv1;
69 uint8_t rpl_dagid[DAGID_LEN];
70 };
71 #define RPL_DIO_GROUND_FLAG 0x80
72 #define RPL_DIO_MOP_SHIFT 3
73 #define RPL_DIO_MOP_MASK (7 << RPL_DIO_MOP_SHIFT)
74 #define RPL_DIO_PRF_SHIFT 0
75 #define RPL_DIO_PRF_MASK (7 << RPL_DIO_PRF_SHIFT)
76 #define RPL_DIO_GROUNDED(X) ((X)&RPL_DIO_GROUND_FLAG)
77 #define RPL_DIO_MOP(X) (enum RPL_DIO_MOP)(((X)&RPL_DIO_MOP_MASK) >> RPL_DIO_MOP_SHIFT)
78 #define RPL_DIO_PRF(X) (((X)&RPL_DIO_PRF_MASK) >> RPL_DIO_PRF_SHIFT)
79  
80 enum RPL_DIO_MOP {
81 RPL_DIO_NONSTORING= 0x0,
82 RPL_DIO_STORING = 0x1,
83 RPL_DIO_NONSTORING_MULTICAST = 0x2,
84 RPL_DIO_STORING_MULTICAST = 0x3,
85 };
86  
87 enum RPL_SUBOPT {
88 RPL_OPT_PAD0 = 0,
89 RPL_OPT_PADN = 1,
90 RPL_DIO_METRICS = 2,
91 RPL_DIO_ROUTINGINFO = 3,
92 RPL_DIO_CONFIG = 4,
93 RPL_DAO_RPLTARGET = 5,
94 RPL_DAO_TRANSITINFO = 6,
95 RPL_DIO_DESTPREFIX = 8,
96 RPL_DAO_RPLTARGET_DESC=9,
97 };
98  
99 struct rpl_dio_genoption {
100 uint8_t rpl_dio_type;
101 uint8_t rpl_dio_len; /* suboption length, not including type/len */
102 };
103 #define RPL_DIO_GENOPTION_LEN 2
104  
105 #define RPL_DIO_LIFETIME_INFINITE 0xffffffff
106 #define RPL_DIO_LIFETIME_DISCONNECT 0
107  
108 struct rpl_dio_destprefix {
109 uint8_t rpl_dio_type;
110 uint8_t rpl_dio_len;
111 uint8_t rpl_dio_prefixlen; /* in bits */
112 uint8_t rpl_dio_prf; /* flags, including Route Preference */
113 uint32_t rpl_dio_prefixlifetime; /* in seconds */
114 #if 0
115 uint8_t rpl_dio_prefix[0]; /* variable number of bytes */
116 #endif
117 };
118  
119 /* section 6.4.1, DODAG Information Object (DIO) */
120 struct nd_rpl_dao {
121 uint8_t rpl_instanceid;
122 uint8_t rpl_flags; /* bit 7=K, 6=D */
123 uint8_t rpl_resv;
124 uint8_t rpl_daoseq;
125 uint8_t rpl_dagid[DAGID_LEN]; /* present when D set. */
126 };
127 #define ND_RPL_DAO_MIN_LEN 4 /* length without DAGID */
128  
129 /* indicates if this DAO is to be acK'ed */
130 #define RPL_DAO_K_SHIFT 7
131 #define RPL_DAO_K_MASK (1 << RPL_DAO_K_SHIFT)
132 #define RPL_DAO_K(X) (((X)&RPL_DAO_K_MASK) >> RPL_DAO_K_SHIFT)
133  
134 /* indicates if the DAGID is present */
135 #define RPL_DAO_D_SHIFT 6
136 #define RPL_DAO_D_MASK (1 << RPL_DAO_D_SHIFT)
137 #define RPL_DAO_D(X) (((X)&RPL_DAO_D_MASK) >> RPL_DAO_D_SHIFT)
138  
139 struct rpl_dao_target {
140 uint8_t rpl_dao_type;
141 uint8_t rpl_dao_len;
142 uint8_t rpl_dao_flags; /* unused */
143 uint8_t rpl_dao_prefixlen; /* in bits */
144 #if 0
145 uint8_t rpl_dao_prefix[0]; /* variable number of bytes */
146 #endif
147 };
148  
149 /* section 6.5.1, Destination Advertisement Object Acknowledgement (DAO-ACK) */
150 struct nd_rpl_daoack {
151 uint8_t rpl_instanceid;
152 uint8_t rpl_flags; /* bit 7=D */
153 uint8_t rpl_daoseq;
154 uint8_t rpl_status;
155 uint8_t rpl_dagid[DAGID_LEN]; /* present when D set. */
156 };
157 #define ND_RPL_DAOACK_MIN_LEN 4 /* length without DAGID */
158 /* indicates if the DAGID is present */
159 #define RPL_DAOACK_D_SHIFT 7
160 #define RPL_DAOACK_D_MASK (1 << RPL_DAOACK_D_SHIFT)
161 #define RPL_DAOACK_D(X) (((X)&RPL_DAOACK_D_MASK) >> RPL_DAOACK_D_SHIFT)
162  
163  
164  
165 #define _RPL_H_
166 #endif /* _RPL_H_ */
167  
168 /*
169 * Local Variables:
170 * c-basic-offset:4
171 * c-style: whitesmith
172 * End:
173 */
174