tdhcp.h - plan9port - [fork] Plan 9 from user space
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tdhcp.h (3267B)
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1
2 enum
3 {
4 OfferTimeout= 60, /* when an offer times out */
5 MaxLease= 60*60, /* longest lease for dynamic binding */
6 MinLease= 15*60, /* shortest lease for dynamic binding */
7 StaticLease= 30*60, /* lease for static binding */
8
9 IPUDPHDRSIZE= 28, /* size of an IP plus UDP header */
10 MINSUPPORTED= 576, /* biggest IP message the client must support */
11
12 /* lengths of some bootp fields */
13 Maxhwlen= 16,
14 Maxfilelen= 128,
15 Maxoptlen= 312-4,
16
17 /* bootp types */
18 Bootrequest= 1,
19 Bootreply= 2,
20
21 /* bootp flags */
22 Fbroadcast= 1<<15,
23
24 /* dhcp types */
25 Discover= 1,
26 Offer= 2,
27 Request= 3,
28 Decline= 4,
29 Ack= 5,
30 Nak= 6,
31 Release= 7,
32 Inform= 8,
33
34 /* bootp option types */
35 OBend= 255,
36 OBpad= 0,
37 OBmask= 1,
38 OBtimeoff= 2,
39 OBrouter= 3,
40 OBtimeserver= 4,
41 OBnameserver= 5,
42 OBdnserver= 6,
43 OBlogserver= 7,
44 OBcookieserver= 8,
45 OBlprserver= 9,
46 OBimpressserver= 10,
47 OBrlserver= 11,
48 OBhostname= 12, /* 0xc0 */
49 OBbflen= 13,
50 OBdumpfile= 14,
51 OBdomainname= 15,
52 OBswapserver= 16, /* 0x10 */
53 OBrootpath= 17,
54 OBextpath= 18,
55 OBipforward= 19,
56 OBnonlocal= 20,
57 OBpolicyfilter= 21,
58 OBmaxdatagram= 22,
59 OBttl= 23,
60 OBpathtimeout= 24,
61 OBpathplateau= 25,
62 OBmtu= 26,
63 OBsubnetslocal= 27,
64 OBbaddr= 28,
65 OBdiscovermask= 29,
66 OBsupplymask= 30,
67 OBdiscoverrouter= 31,
68 OBrsserver= 32, /* 0x20 */
69 OBstaticroutes= 33,
70 OBtrailerencap= 34,
71 OBarptimeout= 35,
72 OBetherencap= 36,
73 OBtcpttl= 37,
74 OBtcpka= 38,
75 OBtcpkag= 39,
76 OBnisdomain= 40,
77 OBniserver= 41,
78 OBntpserver= 42,
79 OBvendorinfo= 43, /* 0x2b */
80 OBnetbiosns= 44,
81 OBnetbiosdds= 45,
82 OBnetbiostype= 46,
83 OBnetbiosscope= 47,
84 OBxfontserver= 48, /* 0x30 */
85 OBxdispmanager= 49,
86 OBnisplusdomain= 64, /* 0x40 */
87 OBnisplusserver= 65,
88 OBhomeagent= 68,
89 OBsmtpserver= 69,
90 OBpop3server= 70,
91 OBnntpserver= 71,
92 OBwwwserver= 72,
93 OBfingerserver= 73,
94 OBircserver= 74,
95 OBstserver= 75,
96 OBstdaserver= 76,
97
98 /* dhcp options */
99 ODipaddr= 50, /* 0x32 */
100 ODlease= 51,
101 ODoverload= 52,
102 ODtype= 53, /* 0x35 */
103 ODserverid= 54, /* 0x36 */
104 ODparams= 55, /* 0x37 */
105 ODmessage= 56,
106 ODmaxmsg= 57,
107 ODrenewaltime= 58,
108 ODrebindingtime= 59,
109 ODvendorclass= 60,
110 ODclientid= 61, /* 0x3d */
111 ODtftpserver= 66,
112 ODbootfile= 67,
113
114 /* plan9 vendor info options */
115 OP9fs= 128, // plan9 file servers
116 OP9auth= 129, // plan9 auth servers
117 };
118
119 /* a lease that never expires */
120 #define Lforever 0xffffffffU
121
122 /* dhcp states */
123 enum {
124 Sinit,
125 Sselecting,
126 Srequesting,
127 Sbound,
128 Srenewing,
129 Srebinding
130 };
131
132 typedef struct Bootp Bootp;
133 struct Bootp
134 {
135 uchar op; /* opcode */
136 uchar htype; /* hardware type */
137 uchar hlen; /* hardware address len */
138 uchar hops; /* hops */
139 uchar xid[4]; /* a random number */
140 uchar secs[2]; /* elapsed since client started booting */
141 uchar flags[2];
142 uchar ciaddr[IPv4addrlen]; /* client IP address (client tells server) */
143 uchar yiaddr[IPv4addrlen]; /* client IP address (server tells client) */
144 uchar siaddr[IPv4addrlen]; /* server IP address */
145 uchar giaddr[IPv4addrlen]; /* gateway IP address */
146 uchar chaddr[Maxhwlen]; /* client hardware address */
147 char sname[64]; /* server host name (optional) */
148 char file[Maxfilelen]; /* boot file name */
149 uchar optmagic[4];
150 uchar optdata[Maxoptlen];
151 };