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8ae0e4b4 | 1 | /* |
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2 | * Copyright (c) 1984, 1985, 1986, 1987 Regents of the University of California. |
3 | * All rights reserved. | |
8ae0e4b4 | 4 | * |
240edf1f | 5 | * Redistribution and use in source and binary forms are permitted |
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6 | * provided that the above copyright notice and this paragraph are |
7 | * duplicated in all such forms and that any documentation, | |
8 | * advertising materials, and other materials related to such | |
9 | * distribution and use acknowledge that the software was developed | |
10 | * by the University of California, Berkeley. The name of the | |
11 | * University may not be used to endorse or promote products derived | |
12 | * from this software without specific prior written permission. | |
13 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR | |
14 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED | |
15 | * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. | |
240edf1f | 16 | * |
616d42db | 17 | * @(#)sp.h 7.3 (Berkeley) %G% |
8ae0e4b4 | 18 | */ |
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19 | |
20 | /* | |
21 | * Definitions for Xerox NS style sequenced packet protocol | |
22 | */ | |
23 | ||
24 | struct sphdr { | |
25 | u_char sp_cc; /* connection control */ | |
26 | u_char sp_dt; /* datastream type */ | |
27 | #define SP_SP 0x80 /* system packet */ | |
28 | #define SP_SA 0x40 /* send acknowledgement */ | |
29 | #define SP_OB 0x20 /* attention (out of band data) */ | |
30 | #define SP_EM 0x10 /* end of message */ | |
31 | u_short sp_sid; /* source connection identifier */ | |
32 | u_short sp_did; /* destination connection identifier */ | |
33 | u_short sp_seq; /* sequence number */ | |
34 | u_short sp_ack; /* acknowledge number */ | |
35 | u_short sp_alo; /* allocation number */ | |
36 | }; |