The Linux-iSCSI.org target module is a full featured in-kernel software implementation of iSCSI target mode (RFC-3720) for the current WIP mainline target v4.1 infrastructure code for the v3.1 kernel. More information can be found here: http://linux-iscsi.org/wiki/ISCSI This includes support for: * RFC-3720 defined request / response state machines and support for all defined iSCSI operation codes from Section 10.2.1.2 using libiscsi include/scsi/iscsi_proto.h PDU definitions * Target v4.1 compatible control plane using the generic layout in target_core_fabric_configfs.c and fabric dependent attributes within /sys/kernel/config/target/iscsi/ subdirectories. * Target v4.1 compatible iSCSI statistics based on RFC-4544 (iSCSI MIBS) * Support for IPv6 and IPv4 network portals in M:N mapping to TPGs * iSCSI Error Recovery Hierarchy support * Per iSCSI connection RX/TX thread pair scheduling affinity * crc32c + crc32c_intel SSEv4 instruction offload support using libcrypto * CHAP Authentication support using libcrypto * Conversion to use internal SGl allocation with iscsit_alloc_buffs() -> transport_generic_map_mem_to_cmd() (nab: Fix iscsi_proto.h struct scsi_lun usage from linux-next in commit: iscsi: Use struct scsi_lun in iscsi structs instead of u8[8]) (nab: Fix 32-bit compile warnings) Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Andy Grover <agrover@redhat.com> Acked-by: Roland Dreier <roland@kernel.org> Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
		
			
				
	
	
		
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			31 lines
		
	
	
	
		
			831 B
			
		
	
	
	
		
			C
		
	
	
	
	
	
#ifndef _ISCSI_CHAP_H_
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#define _ISCSI_CHAP_H_
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#define CHAP_DIGEST_MD5		5
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#define CHAP_DIGEST_SHA		6
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#define CHAP_CHALLENGE_LENGTH	16
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#define CHAP_CHALLENGE_STR_LEN	4096
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#define MAX_RESPONSE_LENGTH	64	/* sufficient for MD5 */
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#define	MAX_CHAP_N_SIZE		512
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#define MD5_SIGNATURE_SIZE	16	/* 16 bytes in a MD5 message digest */
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#define CHAP_STAGE_CLIENT_A	1
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#define CHAP_STAGE_SERVER_AIC	2
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#define CHAP_STAGE_CLIENT_NR	3
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#define CHAP_STAGE_CLIENT_NRIC	4
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#define CHAP_STAGE_SERVER_NR	5
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extern u32 chap_main_loop(struct iscsi_conn *, struct iscsi_node_auth *, char *, char *,
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				int *, int *);
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struct iscsi_chap {
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	unsigned char	digest_type;
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	unsigned char	id;
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	unsigned char	challenge[CHAP_CHALLENGE_LENGTH];
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	unsigned int	authenticate_target;
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	unsigned int	chap_state;
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} ____cacheline_aligned;
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#endif   /*** _ISCSI_CHAP_H_ ***/
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