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+# Using ibsrpdm
+
+ibsrpdm is used for discovering and connecting to SRP SCSI targets on
+InfiniBand fabrics. These targets can be accessed with the InfiniBand SRP
+initiator module, "ib_srp," included in Linux kernels 2.6.15 and newer.
+
+To run ibsrpdm, the ib_umad module must be loaded, as well as an appropriate
+low-level driver for the installed IB hardware.
+
+With no command line parameters, ibsrpdm displays information about
+SRP targets in human-readable form:
+
+ # ibsrpdm
+ IO Unit Info:
+ port LID: 0009
+ port GID: fe800000000000000005ad00000013e9
+ change ID: 73b0
+ max controllers: 0x01
+
+ controller[ 1]
+ GUID: 0005ad00000013e7
+ vendor ID: 0005ad
+ device ID: 0005ad
+ IO class : 0100
+ ID: Topspin SRP/FC TCA
+ service entries: 2
+ service[ 0]: 0000000000000066 / SRP.T10:20030003BA27CC7A
+ service[ 1]: 0000000000000066 / SRP.T10:20030003BA27CF53
+
+With the "-c" flag, ibsrpdm displays information in a form that can be
+written to the kernel SRP initiators add_target file to connect to the
+SRP targets. For example:
+
+ # ibsrpdm -c
+ id_ext=20030003BA27CC7A,ioc_guid=0005ad00000013e7,dgid=fe800000000000000005ad00000013e9,pkey=ffff,service_id=0000000000000066
+ id_ext=20030003BA27CF53,ioc_guid=0005ad00000013e7,dgid=fe800000000000000005ad00000013e9,pkey=ffff,service_id=0000000000000066
+
+Given this, the command below will connect to the first target
+discovered from the first port of the local HCA device "mthca0":
+
+ # echo -n id_ext=20030003BA27CC7A,ioc_guid=0005ad00000013e7,dgid=fe800000000000000005ad00000013e9,pkey=ffff,service_id=0000000000000066 > /sys/class/infiniband_srp/srp-mthca0-1/add_target