pccrd.h

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#ifndef _IPXE_PCCRD_H
#define _IPXE_PCCRD_H

/** @file
 *
 * Peer Content Caching and Retrieval: Discovery Protocol [MS-PCCRD]
 *
 */

FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
FILE_SECBOOT ( PERMITTED );

/** PeerDist discovery port */
#define PEERDIST_DISCOVERY_PORT 3702

/** PeerDist discovery IPv4 address (239.255.255.250) */
#define PEERDIST_DISCOVERY_IPV4 \
        ( ( 239 << 24 ) | ( 255 << 16 ) | ( 255 << 8 ) | ( 250 << 0 ) )

/** PeerDist discovery IPv6 address (ff02::c) */
#define PEERDIST_DISCOVERY_IPV6 \
        { 0xff, 0x02, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0xc }

/** A PeerDist discovery reply block count */
struct peerdist_discovery_block_count {
        /** Count (as an eight-digit hex value) */
        char hex[8];
} __attribute__ (( packed ));

/** A PeerDist discovery reply */
struct peerdist_discovery_reply {
        /** List of segment ID strings
         *
         * The list is terminated with a zero-length string.
         */
        char *ids;
        /** List of peer locations
         *
         * The list is terminated with a zero-length string.
         */
        char *locations;
};

extern char * peerdist_discovery_request ( const char *uuid, const char *id );
extern int peerdist_discovery_reply ( char *data, size_t len,
                                      struct peerdist_discovery_reply *reply );

#endif /* _IPXE_PCCRD_H */