iscsi-target: Add iSCSI fabric support for target v4.1
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>
diff --git a/drivers/target/iscsi/iscsi_target_parameters.h b/drivers/target/iscsi/iscsi_target_parameters.h
new file mode 100644
index 0000000..6a37fd6
--- /dev/null
+++ b/drivers/target/iscsi/iscsi_target_parameters.h
@@ -0,0 +1,269 @@
+#ifndef ISCSI_PARAMETERS_H
+#define ISCSI_PARAMETERS_H
+
+struct iscsi_extra_response {
+ char key[64];
+ char value[32];
+ struct list_head er_list;
+} ____cacheline_aligned;
+
+struct iscsi_param {
+ char *name;
+ char *value;
+ u8 set_param;
+ u8 phase;
+ u8 scope;
+ u8 sender;
+ u8 type;
+ u8 use;
+ u16 type_range;
+ u32 state;
+ struct list_head p_list;
+} ____cacheline_aligned;
+
+extern int iscsi_login_rx_data(struct iscsi_conn *, char *, int);
+extern int iscsi_login_tx_data(struct iscsi_conn *, char *, char *, int);
+extern void iscsi_dump_conn_ops(struct iscsi_conn_ops *);
+extern void iscsi_dump_sess_ops(struct iscsi_sess_ops *);
+extern void iscsi_print_params(struct iscsi_param_list *);
+extern int iscsi_create_default_params(struct iscsi_param_list **);
+extern int iscsi_set_keys_to_negotiate(int, struct iscsi_param_list *);
+extern int iscsi_set_keys_irrelevant_for_discovery(struct iscsi_param_list *);
+extern int iscsi_copy_param_list(struct iscsi_param_list **,
+ struct iscsi_param_list *, int);
+extern int iscsi_change_param_value(char *, struct iscsi_param_list *, int);
+extern void iscsi_release_param_list(struct iscsi_param_list *);
+extern struct iscsi_param *iscsi_find_param_from_key(char *, struct iscsi_param_list *);
+extern int iscsi_extract_key_value(char *, char **, char **);
+extern int iscsi_update_param_value(struct iscsi_param *, char *);
+extern int iscsi_decode_text_input(u8, u8, char *, u32, struct iscsi_param_list *);
+extern int iscsi_encode_text_output(u8, u8, char *, u32 *,
+ struct iscsi_param_list *);
+extern int iscsi_check_negotiated_keys(struct iscsi_param_list *);
+extern void iscsi_set_connection_parameters(struct iscsi_conn_ops *,
+ struct iscsi_param_list *);
+extern void iscsi_set_session_parameters(struct iscsi_sess_ops *,
+ struct iscsi_param_list *, int);
+
+#define YES "Yes"
+#define NO "No"
+#define ALL "All"
+#define IRRELEVANT "Irrelevant"
+#define NONE "None"
+#define NOTUNDERSTOOD "NotUnderstood"
+#define REJECT "Reject"
+
+/*
+ * The Parameter Names.
+ */
+#define AUTHMETHOD "AuthMethod"
+#define HEADERDIGEST "HeaderDigest"
+#define DATADIGEST "DataDigest"
+#define MAXCONNECTIONS "MaxConnections"
+#define SENDTARGETS "SendTargets"
+#define TARGETNAME "TargetName"
+#define INITIATORNAME "InitiatorName"
+#define TARGETALIAS "TargetAlias"
+#define INITIATORALIAS "InitiatorAlias"
+#define TARGETADDRESS "TargetAddress"
+#define TARGETPORTALGROUPTAG "TargetPortalGroupTag"
+#define INITIALR2T "InitialR2T"
+#define IMMEDIATEDATA "ImmediateData"
+#define MAXRECVDATASEGMENTLENGTH "MaxRecvDataSegmentLength"
+#define MAXBURSTLENGTH "MaxBurstLength"
+#define FIRSTBURSTLENGTH "FirstBurstLength"
+#define DEFAULTTIME2WAIT "DefaultTime2Wait"
+#define DEFAULTTIME2RETAIN "DefaultTime2Retain"
+#define MAXOUTSTANDINGR2T "MaxOutstandingR2T"
+#define DATAPDUINORDER "DataPDUInOrder"
+#define DATASEQUENCEINORDER "DataSequenceInOrder"
+#define ERRORRECOVERYLEVEL "ErrorRecoveryLevel"
+#define SESSIONTYPE "SessionType"
+#define IFMARKER "IFMarker"
+#define OFMARKER "OFMarker"
+#define IFMARKINT "IFMarkInt"
+#define OFMARKINT "OFMarkInt"
+#define X_EXTENSIONKEY "X-com.sbei.version"
+#define X_EXTENSIONKEY_CISCO_NEW "X-com.cisco.protocol"
+#define X_EXTENSIONKEY_CISCO_OLD "X-com.cisco.iscsi.draft"
+
+/*
+ * For AuthMethod.
+ */
+#define KRB5 "KRB5"
+#define SPKM1 "SPKM1"
+#define SPKM2 "SPKM2"
+#define SRP "SRP"
+#define CHAP "CHAP"
+
+/*
+ * Initial values for Parameter Negotiation.
+ */
+#define INITIAL_AUTHMETHOD CHAP
+#define INITIAL_HEADERDIGEST "CRC32C,None"
+#define INITIAL_DATADIGEST "CRC32C,None"
+#define INITIAL_MAXCONNECTIONS "1"
+#define INITIAL_SENDTARGETS ALL
+#define INITIAL_TARGETNAME "LIO.Target"
+#define INITIAL_INITIATORNAME "LIO.Initiator"
+#define INITIAL_TARGETALIAS "LIO Target"
+#define INITIAL_INITIATORALIAS "LIO Initiator"
+#define INITIAL_TARGETADDRESS "0.0.0.0:0000,0"
+#define INITIAL_TARGETPORTALGROUPTAG "1"
+#define INITIAL_INITIALR2T YES
+#define INITIAL_IMMEDIATEDATA YES
+#define INITIAL_MAXRECVDATASEGMENTLENGTH "8192"
+#define INITIAL_MAXBURSTLENGTH "262144"
+#define INITIAL_FIRSTBURSTLENGTH "65536"
+#define INITIAL_DEFAULTTIME2WAIT "2"
+#define INITIAL_DEFAULTTIME2RETAIN "20"
+#define INITIAL_MAXOUTSTANDINGR2T "1"
+#define INITIAL_DATAPDUINORDER YES
+#define INITIAL_DATASEQUENCEINORDER YES
+#define INITIAL_ERRORRECOVERYLEVEL "0"
+#define INITIAL_SESSIONTYPE NORMAL
+#define INITIAL_IFMARKER NO
+#define INITIAL_OFMARKER NO
+#define INITIAL_IFMARKINT "2048~65535"
+#define INITIAL_OFMARKINT "2048~65535"
+
+/*
+ * For [Header,Data]Digests.
+ */
+#define CRC32C "CRC32C"
+
+/*
+ * For SessionType.
+ */
+#define DISCOVERY "Discovery"
+#define NORMAL "Normal"
+
+/*
+ * struct iscsi_param->use
+ */
+#define USE_LEADING_ONLY 0x01
+#define USE_INITIAL_ONLY 0x02
+#define USE_ALL 0x04
+
+#define IS_USE_LEADING_ONLY(p) ((p)->use & USE_LEADING_ONLY)
+#define IS_USE_INITIAL_ONLY(p) ((p)->use & USE_INITIAL_ONLY)
+#define IS_USE_ALL(p) ((p)->use & USE_ALL)
+
+#define SET_USE_INITIAL_ONLY(p) ((p)->use |= USE_INITIAL_ONLY)
+
+/*
+ * struct iscsi_param->sender
+ */
+#define SENDER_INITIATOR 0x01
+#define SENDER_TARGET 0x02
+#define SENDER_BOTH 0x03
+/* Used in iscsi_check_key() */
+#define SENDER_RECEIVER 0x04
+
+#define IS_SENDER_INITIATOR(p) ((p)->sender & SENDER_INITIATOR)
+#define IS_SENDER_TARGET(p) ((p)->sender & SENDER_TARGET)
+#define IS_SENDER_BOTH(p) ((p)->sender & SENDER_BOTH)
+
+/*
+ * struct iscsi_param->scope
+ */
+#define SCOPE_CONNECTION_ONLY 0x01
+#define SCOPE_SESSION_WIDE 0x02
+
+#define IS_SCOPE_CONNECTION_ONLY(p) ((p)->scope & SCOPE_CONNECTION_ONLY)
+#define IS_SCOPE_SESSION_WIDE(p) ((p)->scope & SCOPE_SESSION_WIDE)
+
+/*
+ * struct iscsi_param->phase
+ */
+#define PHASE_SECURITY 0x01
+#define PHASE_OPERATIONAL 0x02
+#define PHASE_DECLARATIVE 0x04
+#define PHASE_FFP0 0x08
+
+#define IS_PHASE_SECURITY(p) ((p)->phase & PHASE_SECURITY)
+#define IS_PHASE_OPERATIONAL(p) ((p)->phase & PHASE_OPERATIONAL)
+#define IS_PHASE_DECLARATIVE(p) ((p)->phase & PHASE_DECLARATIVE)
+#define IS_PHASE_FFP0(p) ((p)->phase & PHASE_FFP0)
+
+/*
+ * struct iscsi_param->type
+ */
+#define TYPE_BOOL_AND 0x01
+#define TYPE_BOOL_OR 0x02
+#define TYPE_NUMBER 0x04
+#define TYPE_NUMBER_RANGE 0x08
+#define TYPE_STRING 0x10
+#define TYPE_VALUE_LIST 0x20
+
+#define IS_TYPE_BOOL_AND(p) ((p)->type & TYPE_BOOL_AND)
+#define IS_TYPE_BOOL_OR(p) ((p)->type & TYPE_BOOL_OR)
+#define IS_TYPE_NUMBER(p) ((p)->type & TYPE_NUMBER)
+#define IS_TYPE_NUMBER_RANGE(p) ((p)->type & TYPE_NUMBER_RANGE)
+#define IS_TYPE_STRING(p) ((p)->type & TYPE_STRING)
+#define IS_TYPE_VALUE_LIST(p) ((p)->type & TYPE_VALUE_LIST)
+
+/*
+ * struct iscsi_param->type_range
+ */
+#define TYPERANGE_BOOL_AND 0x0001
+#define TYPERANGE_BOOL_OR 0x0002
+#define TYPERANGE_0_TO_2 0x0004
+#define TYPERANGE_0_TO_3600 0x0008
+#define TYPERANGE_0_TO_32767 0x0010
+#define TYPERANGE_0_TO_65535 0x0020
+#define TYPERANGE_1_TO_65535 0x0040
+#define TYPERANGE_2_TO_3600 0x0080
+#define TYPERANGE_512_TO_16777215 0x0100
+#define TYPERANGE_AUTH 0x0200
+#define TYPERANGE_DIGEST 0x0400
+#define TYPERANGE_ISCSINAME 0x0800
+#define TYPERANGE_MARKINT 0x1000
+#define TYPERANGE_SESSIONTYPE 0x2000
+#define TYPERANGE_TARGETADDRESS 0x4000
+#define TYPERANGE_UTF8 0x8000
+
+#define IS_TYPERANGE_0_TO_2(p) ((p)->type_range & TYPERANGE_0_TO_2)
+#define IS_TYPERANGE_0_TO_3600(p) ((p)->type_range & TYPERANGE_0_TO_3600)
+#define IS_TYPERANGE_0_TO_32767(p) ((p)->type_range & TYPERANGE_0_TO_32767)
+#define IS_TYPERANGE_0_TO_65535(p) ((p)->type_range & TYPERANGE_0_TO_65535)
+#define IS_TYPERANGE_1_TO_65535(p) ((p)->type_range & TYPERANGE_1_TO_65535)
+#define IS_TYPERANGE_2_TO_3600(p) ((p)->type_range & TYPERANGE_2_TO_3600)
+#define IS_TYPERANGE_512_TO_16777215(p) ((p)->type_range & \
+ TYPERANGE_512_TO_16777215)
+#define IS_TYPERANGE_AUTH_PARAM(p) ((p)->type_range & TYPERANGE_AUTH)
+#define IS_TYPERANGE_DIGEST_PARAM(p) ((p)->type_range & TYPERANGE_DIGEST)
+#define IS_TYPERANGE_SESSIONTYPE(p) ((p)->type_range & \
+ TYPERANGE_SESSIONTYPE)
+
+/*
+ * struct iscsi_param->state
+ */
+#define PSTATE_ACCEPTOR 0x01
+#define PSTATE_NEGOTIATE 0x02
+#define PSTATE_PROPOSER 0x04
+#define PSTATE_IRRELEVANT 0x08
+#define PSTATE_REJECT 0x10
+#define PSTATE_REPLY_OPTIONAL 0x20
+#define PSTATE_RESPONSE_GOT 0x40
+#define PSTATE_RESPONSE_SENT 0x80
+
+#define IS_PSTATE_ACCEPTOR(p) ((p)->state & PSTATE_ACCEPTOR)
+#define IS_PSTATE_NEGOTIATE(p) ((p)->state & PSTATE_NEGOTIATE)
+#define IS_PSTATE_PROPOSER(p) ((p)->state & PSTATE_PROPOSER)
+#define IS_PSTATE_IRRELEVANT(p) ((p)->state & PSTATE_IRRELEVANT)
+#define IS_PSTATE_REJECT(p) ((p)->state & PSTATE_REJECT)
+#define IS_PSTATE_REPLY_OPTIONAL(p) ((p)->state & PSTATE_REPLY_OPTIONAL)
+#define IS_PSTATE_RESPONSE_GOT(p) ((p)->state & PSTATE_RESPONSE_GOT)
+#define IS_PSTATE_RESPONSE_SENT(p) ((p)->state & PSTATE_RESPONSE_SENT)
+
+#define SET_PSTATE_ACCEPTOR(p) ((p)->state |= PSTATE_ACCEPTOR)
+#define SET_PSTATE_NEGOTIATE(p) ((p)->state |= PSTATE_NEGOTIATE)
+#define SET_PSTATE_PROPOSER(p) ((p)->state |= PSTATE_PROPOSER)
+#define SET_PSTATE_IRRELEVANT(p) ((p)->state |= PSTATE_IRRELEVANT)
+#define SET_PSTATE_REJECT(p) ((p)->state |= PSTATE_REJECT)
+#define SET_PSTATE_REPLY_OPTIONAL(p) ((p)->state |= PSTATE_REPLY_OPTIONAL)
+#define SET_PSTATE_RESPONSE_GOT(p) ((p)->state |= PSTATE_RESPONSE_GOT)
+#define SET_PSTATE_RESPONSE_SENT(p) ((p)->state |= PSTATE_RESPONSE_SENT)
+
+#endif /* ISCSI_PARAMETERS_H */