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63 lines
2.0 KiB
C
63 lines
2.0 KiB
C
#ifndef ICP_HEADER
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#define ICP_HEADER
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/* Version */
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#define ICP_VERSION_1 1
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#define ICP_VERSION_2 2
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#define ICP_VERSION_3 3
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#define ICP_VERSION_CURRENT ICP_VERSION_2
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#define ICP_FLAG_HIT_OBJ 0x80000000ul
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#define ICP_FLAG_SRC_RTT 0x40000000ul
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#if SIZEOF_INT == 4
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typedef unsigned int u_num32;
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#elif SIZEOF_LONG == 4
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typedef unsigned long u_num32;
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#else
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#error "No suitable type for representing a 32-bits value"
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#endif
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struct icp_common_s {
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unsigned char opcode; /* opcode */
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unsigned char version; /* version number */
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unsigned short length; /* total length (bytes) */
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u_num32 reqnum; /* req number (req'd for UDP) */
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u_num32 flags;
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u_num32 pad;
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u_num32 shostid; /* sender host id */
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};
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typedef struct icp_common_s icp_common_t;
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typedef enum {
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ICP_OP_INVALID, /* 00 to insure 0 doesn't get accidently interpreted. */
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ICP_OP_QUERY, /* 01 query opcode (cl->sv) */
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ICP_OP_HIT, /* 02 hit (cl<-sv) */
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ICP_OP_MISS, /* 03 miss (cl<-sv) */
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ICP_OP_ERR, /* 04 error (cl<-sv) */
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ICP_OP_SEND, /* 05 send object non-auth (cl->sv) */
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ICP_OP_SENDA, /* 06 send object authoritative (cl->sv) */
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ICP_OP_DATABEG, /* 07 first data, but not last (sv<-cl) */
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ICP_OP_DATA, /* 08 data middle of stream (sv<-cl) */
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ICP_OP_DATAEND, /* 09 last data (sv<-cl) */
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ICP_OP_SECHO, /* 10 echo from source (sv<-os) */
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ICP_OP_DECHO, /* 11 echo from dumb cache (sv<-dc) */
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ICP_OP_UNUSED0, /* 12 */
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ICP_OP_UNUSED1, /* 13 */
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ICP_OP_UNUSED2, /* 14 */
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ICP_OP_UNUSED3, /* 15 */
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ICP_OP_UNUSED4, /* 16 */
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ICP_OP_UNUSED5, /* 17 */
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ICP_OP_UNUSED6, /* 18 */
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ICP_OP_UNUSED7, /* 19 */
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ICP_OP_UNUSED8, /* 20 */
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ICP_OP_MISS_NOFETCH, /* 21 access denied while reloading */
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ICP_OP_DENIED, /* 22 access denied (cl<-sv) */
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ICP_OP_HIT_OBJ, /* 23 hit with object data (cl<-sv) */
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ICP_OP_END /* 24 marks end of opcodes */
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} icp_opcode;
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#endif /* ICP_HEADER */
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