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authorNicholas Bellinger <nab@linux-iscsi.org>2010-12-17 11:11:26 -0800
committerJames Bottomley <James.Bottomley@suse.de>2011-01-14 10:12:29 -0600
commitc66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5 (patch)
tree71c6344688bf56ea6aaf18c586ab69ff4f077ade /drivers/target/target_core_mib.h
parentf4013c3879d1bbd9f3ab8351185decd049502368 (diff)
downloadlinux-2.6.38-lt-ux500-c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5.tar.gz
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the following feature set: High-performance, non-blocking, multithreaded architecture with SIMD support. Advanced SCSI feature set: * Persistent Reservations (PRs) * Asymmetric Logical Unit Assignment (ALUA) * Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S) * Full Error Recovery (ERL=0,1,2) * Active/active task migration and session continuation (ERL=2) * Thin LUN provisioning (UNMAP and WRITE_SAMExx) Multiprotocol target plugins Storage media independence: * Virtualization of all storage media; transparent mapping of IO to LUNs * No hard limits on number of LUNs per Target; maximum LUN size ~750 TB * Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc. Standards compliance: * Full compliance with IETF (RFC 3720) * Full implementation of SPC-4 PRs and ALUA Significant code cleanups done by Christoph Hellwig. [jejb: fix up for new block bdev exclusive interface. Minor fixes from Randy Dunlap and Dan Carpenter.] Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to 'drivers/target/target_core_mib.h')
-rw-r--r--drivers/target/target_core_mib.h28
1 files changed, 28 insertions, 0 deletions
diff --git a/drivers/target/target_core_mib.h b/drivers/target/target_core_mib.h
new file mode 100644
index 00000000000..27720463385
--- /dev/null
+++ b/drivers/target/target_core_mib.h
@@ -0,0 +1,28 @@
+#ifndef TARGET_CORE_MIB_H
+#define TARGET_CORE_MIB_H
+
+typedef enum {
+ SCSI_INST_INDEX,
+ SCSI_DEVICE_INDEX,
+ SCSI_AUTH_INTR_INDEX,
+ SCSI_INDEX_TYPE_MAX
+} scsi_index_t;
+
+struct scsi_index_table {
+ spinlock_t lock;
+ u32 scsi_mib_index[SCSI_INDEX_TYPE_MAX];
+} ____cacheline_aligned;
+
+/* SCSI Port stats */
+struct scsi_port_stats {
+ u64 cmd_pdus;
+ u64 tx_data_octets;
+ u64 rx_data_octets;
+} ____cacheline_aligned;
+
+extern int init_scsi_target_mib(void);
+extern void remove_scsi_target_mib(void);
+extern void init_scsi_index_table(void);
+extern u32 scsi_get_new_index(scsi_index_t);
+
+#endif /*** TARGET_CORE_MIB_H ***/