87 lines
2.1 KiB
C
87 lines
2.1 KiB
C
#ifndef _IPXE_PEERMUX_H
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#define _IPXE_PEERMUX_H
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/** @file
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*
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* Peer Content Caching and Retrieval (PeerDist) protocol multiplexer
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*
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*/
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FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
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#include <stdint.h>
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#include <ipxe/list.h>
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#include <ipxe/refcnt.h>
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#include <ipxe/interface.h>
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#include <ipxe/process.h>
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#include <ipxe/uri.h>
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#include <ipxe/xferbuf.h>
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#include <ipxe/pccrc.h>
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/** Maximum number of concurrent block downloads */
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#define PEERMUX_MAX_BLOCKS 32
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/** PeerDist download content information cache */
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struct peerdist_info_cache {
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/** Content information */
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struct peerdist_info info;
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/** Content information segment */
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struct peerdist_info_segment segment;
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/** Content information block */
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struct peerdist_info_block block;
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};
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/** A PeerDist multiplexed block download */
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struct peerdist_multiplexed_block {
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/** PeerDist download multiplexer */
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struct peerdist_multiplexer *peermux;
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/** List of multiplexed blocks */
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struct list_head list;
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/** Data transfer interface */
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struct interface xfer;
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};
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/** PeerDist statistics */
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struct peerdist_statistics {
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/** Maximum observed number of peers */
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unsigned int peers;
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/** Number of blocks downloaded in total */
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unsigned int total;
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/** Number of blocks downloaded from peers */
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unsigned int local;
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};
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/** A PeerDist download multiplexer */
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struct peerdist_multiplexer {
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/** Reference count */
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struct refcnt refcnt;
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/** Data transfer interface */
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struct interface xfer;
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/** Content information interface */
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struct interface info;
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/** Original URI */
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struct uri *uri;
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/** Content information data transfer buffer */
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struct xfer_buffer buffer;
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/** Content information cache */
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struct peerdist_info_cache cache;
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/** Block download initiation process */
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struct process process;
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/** List of busy block downloads */
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struct list_head busy;
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/** List of idle block downloads */
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struct list_head idle;
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/** Block downloads */
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struct peerdist_multiplexed_block block[PEERMUX_MAX_BLOCKS];
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/** Statistics */
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struct peerdist_statistics stats;
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};
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extern int peermux_filter ( struct interface *xfer, struct interface *info,
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struct uri *uri );
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#endif /* _IPXE_PEERMUX_H */
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