Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) What:		/sys/class/infiniband_srp/srp-<hca>-<port_number>/add_target
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) Date:		January 2, 2006
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3) KernelVersion:	2.6.15
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4) Contact:	linux-rdma@vger.kernel.org
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5) Description:	Interface for making ib_srp connect to a new target.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6) 		One can request ib_srp to connect to a new target by writing
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7) 		a comma-separated list of login parameters to this sysfs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8) 		attribute. The supported parameters are:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) 		* id_ext, a 16-digit hexadecimal number specifying the eight
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) 		  byte identifier extension in the 16-byte SRP target port
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) 		  identifier. The target port identifier is sent by ib_srp
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) 		  to the target in the SRP_LOGIN_REQ request.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) 		* ioc_guid, a 16-digit hexadecimal number specifying the eight
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) 		  byte I/O controller GUID portion of the 16-byte target port
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) 		  identifier.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) 		* dgid, a 32-digit hexadecimal number specifying the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) 		  destination GID.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) 		* pkey, a four-digit hexadecimal number specifying the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) 		  InfiniBand partition key.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) 		* service_id, a 16-digit hexadecimal number specifying the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) 		  InfiniBand service ID used to establish communication with
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) 		  the SRP target. How to find out the value of the service ID
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) 		  is specified in the documentation of the SRP target.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) 		* max_sect, a decimal number specifying the maximum number of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) 		  512-byte sectors to be transferred via a single SCSI command.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) 		* max_cmd_per_lun, a decimal number specifying the maximum
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) 		  number of outstanding commands for a single LUN.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) 		* io_class, a hexadecimal number specifying the SRP I/O class.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) 		  Must be either 0xff00 (rev 10) or 0x0100 (rev 16a). The I/O
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) 		  class defines the format of the SRP initiator and target
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) 		  port identifiers.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) 		* initiator_ext, a 16-digit hexadecimal number specifying the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) 		  identifier extension portion of the SRP initiator port
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 		  identifier. This data is sent by the initiator to the target
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) 		  in the SRP_LOGIN_REQ request.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 		* cmd_sg_entries, a number in the range 1..255 that specifies
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) 		  the maximum number of data buffer descriptors stored in the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 		  SRP_CMD information unit itself. With allow_ext_sg=0 the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 		  parameter cmd_sg_entries defines the maximum S/G list length
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 		  for a single SRP_CMD, and commands whose S/G list length
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 		  exceeds this limit after S/G list collapsing will fail.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 		* allow_ext_sg, whether ib_srp is allowed to include a partial
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 		  memory descriptor list in an SRP_CMD instead of the entire
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 		  list. If a partial memory descriptor list has been included
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 		  in an SRP_CMD the remaining memory descriptors are
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 		  communicated from initiator to target via an additional RDMA
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 		  transfer. Setting allow_ext_sg to 1 increases the maximum
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 		  amount of data that can be transferred between initiator and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 		  target via a single SCSI command. Since not all SRP target
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 		  implementations support partial memory descriptor lists the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 		  default value for this option is 0.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 		* sg_tablesize, a number in the range 1..2048 specifying the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 		  maximum S/G list length the SCSI layer is allowed to pass to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 		  ib_srp. Specifying a value that exceeds cmd_sg_entries is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 		  only safe with partial memory descriptor list support enabled
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 		  (allow_ext_sg=1).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 		* comp_vector, a number in the range 0..n-1 specifying the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 		  MSI-X completion vector of the first RDMA channel. Some
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 		  HCA's allocate multiple (n) MSI-X vectors per HCA port. If
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 		  the IRQ affinity masks of these interrupts have been
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 		  configured such that each MSI-X interrupt is handled by a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 		  different CPU then the comp_vector parameter can be used to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 		  spread the SRP completion workload over multiple CPU's.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 		* tl_retry_count, a number in the range 2..7 specifying the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 		  IB RC retry count.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 		* queue_size, the maximum number of commands that the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 		  initiator is allowed to queue per SCSI host. The default
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 		  value for this parameter is 62. The lowest supported value
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 		  is 2.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 		* max_it_iu_size, a decimal number specifying the maximum
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 		  initiator to target information unit length.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) What:		/sys/class/infiniband_srp/srp-<hca>-<port_number>/ibdev
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) Date:		January 2, 2006
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) KernelVersion:	2.6.15
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) Contact:	linux-rdma@vger.kernel.org
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) Description:	HCA name (<hca>).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) What:		/sys/class/infiniband_srp/srp-<hca>-<port_number>/port
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) Date:		January 2, 2006
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) KernelVersion:	2.6.15
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) Contact:	linux-rdma@vger.kernel.org
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) Description:	HCA port number (<port_number>).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) What:		/sys/class/scsi_host/host<n>/allow_ext_sg
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) Date:		May 19, 2011
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) KernelVersion:	2.6.39
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) Contact:	linux-rdma@vger.kernel.org
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) Description:	Whether ib_srp is allowed to include a partial memory
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 		descriptor list in an SRP_CMD when communicating with an SRP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 		target.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) What:		/sys/class/scsi_host/host<n>/ch_count
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) Date:		April 1, 2015
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) KernelVersion:	3.19
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) Contact:	linux-rdma@vger.kernel.org
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) Description:	Number of RDMA channels used for communication with the SRP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 		target.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) What:		/sys/class/scsi_host/host<n>/cmd_sg_entries
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) Date:		May 19, 2011
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) KernelVersion:	2.6.39
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) Contact:	linux-rdma@vger.kernel.org
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) Description:	Maximum number of data buffer descriptors that may be sent to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 		the target in a single SRP_CMD request.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) What:		/sys/class/scsi_host/host<n>/comp_vector
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) Date:		September 2, 2013
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) KernelVersion:	3.11
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) Contact:	linux-rdma@vger.kernel.org
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) Description:	Completion vector used for the first RDMA channel.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) What:		/sys/class/scsi_host/host<n>/dgid
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) Date:		June 17, 2006
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) KernelVersion:	2.6.17
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) Contact:	linux-rdma@vger.kernel.org
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) Description:	InfiniBand destination GID used for communication with the SRP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 		target. Differs from orig_dgid if port redirection has happened.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) What:		/sys/class/scsi_host/host<n>/id_ext
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) Date:		June 17, 2006
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) KernelVersion:	2.6.17
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) Contact:	linux-rdma@vger.kernel.org
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) Description:	Eight-byte identifier extension portion of the 16-byte target
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 		port identifier.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) What:		/sys/class/scsi_host/host<n>/ioc_guid
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) Date:		June 17, 2006
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) KernelVersion:	2.6.17
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) Contact:	linux-rdma@vger.kernel.org
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) Description:	Eight-byte I/O controller GUID portion of the 16-byte target
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 		port identifier.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) What:		/sys/class/scsi_host/host<n>/local_ib_device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) Date:		November 29, 2006
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) KernelVersion:	2.6.19
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) Contact:	linux-rdma@vger.kernel.org
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) Description:	Name of the InfiniBand HCA used for communicating with the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 		SRP target.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) What:		/sys/class/scsi_host/host<n>/local_ib_port
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) Date:		November 29, 2006
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) KernelVersion:	2.6.19
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) Contact:	linux-rdma@vger.kernel.org
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) Description:	Number of the HCA port used for communicating with the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 		SRP target.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) What:		/sys/class/scsi_host/host<n>/orig_dgid
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) Date:		June 17, 2006
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) KernelVersion:	2.6.17
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) Contact:	linux-rdma@vger.kernel.org
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) Description:	InfiniBand destination GID specified in the parameters
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 		written to the add_target sysfs attribute.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) What:		/sys/class/scsi_host/host<n>/pkey
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) Date:		June 17, 2006
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) KernelVersion:	2.6.17
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) Contact:	linux-rdma@vger.kernel.org
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) Description:	A 16-bit number representing the InfiniBand partition key used
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 		for communication with the SRP target.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) What:		/sys/class/scsi_host/host<n>/req_lim
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) Date:		October 20, 2010
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) KernelVersion:	2.6.36
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) Contact:	linux-rdma@vger.kernel.org
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) Description:	Number of requests ib_srp can send to the target before it has
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 		to wait for more credits. For more information see also the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 		SRP credit algorithm in the SRP specification.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) What:		/sys/class/scsi_host/host<n>/service_id
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) Date:		June 17, 2006
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) KernelVersion:	2.6.17
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) Contact:	linux-rdma@vger.kernel.org
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) Description:	InfiniBand service ID used for establishing communication with
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 		the SRP	target.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) What:		/sys/class/scsi_host/host<n>/sgid
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) Date:		February 1, 2014
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) KernelVersion:	3.13
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) Contact:	linux-rdma@vger.kernel.org
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) Description:	InfiniBand GID of the source port used for communication with
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 		the SRP target.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) What:		/sys/class/scsi_host/host<n>/zero_req_lim
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) Date:		September 20, 2006
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) KernelVersion:	2.6.18
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) Contact:	linux-rdma@vger.kernel.org
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) Description:	Number of times the initiator had to wait before sending a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 		request to the target because it ran out of credits. For more
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 		information see also the SRP credit algorithm in the SRP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 		specification.