scsi_transport_srp: Fix two kernel-doc warnings

This patch fixes the following two kernel-doc warnings:

    Warning(drivers/scsi/scsi_transport_srp.c:819): No description found for parameter 'rport'
    Warning(include/scsi/scsi_transport_srp.h:75): Excess struct/union/enum/typedef member 'deleted' description in 'srp_rport'

Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Reported-by: Masanari Iida <standby24x7@gmail.com>
Acked-by: Sebastian Riemer <sebastian.riemer@profitbricks.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
IB/srp: Fix MOFED build
IB/srp: Use P_Key cache for P_Key lookups
IB/srp: Make CM timeout depend on subnet timeout
IB/srp: Fix deadlock between host removal and multipathd

If scsi_remove_host() is invoked after a SCSI device has been
blocked, if the fast_io_fail_tmo or dev_loss_tmo work gets
scheduled on the workqueue executing srp_remove_work() and if
an I/O request is scheduled after the SCSI device had been
blocked.

kworker/6:1     D ffff880831f3c460     0   195      2 0x00000000
Call Trace:
 [<ffffffff814aafd9>] schedule+0x29/0x70
 [<ffffffff814aa0ef>] schedule_timeout+0x10f/0x2a0
 [<ffffffff8105af6f>] msleep+0x2f/0x40
 [<ffffffff8123b0ae>] __blk_drain_queue+0x4e/0x180
 [<ffffffff8123d2d5>] blk_cleanup_queue+0x225/0x230
 [<ffffffffa0010732>] __scsi_remove_device+0x62/0xe0 [scsi_mod]
 [<ffffffffa000ed2f>] scsi_forget_host+0x6f/0x80 [scsi_mod]
 [<ffffffffa0002eba>] scsi_remove_host+0x7a/0x130 [scsi_mod]
 [<ffffffffa07cf5c5>] srp_remove_work+0x95/0x180 [ib_srp]
 [<ffffffff8106d7aa>] process_one_work+0x1ea/0x6c0
 [<ffffffff8106dd9b>] worker_thread+0x11b/0x3a0
 [<ffffffff810758bd>] kthread+0xed/0x110
 [<ffffffff814b972c>] ret_from_fork+0x7c/0xb0
multipathd      D ffff880096acc460     0  5340      1 0x00000000
Call Trace:
 [<ffffffff814aafd9>] schedule+0x29/0x70
 [<ffffffff814aa0ef>] schedule_timeout+0x10f/0x2a0
 [<ffffffff814ab79b>] io_schedule_timeout+0x9b/0xf0
 [<ffffffff814abe1c>] wait_for_completion_io_timeout+0xdc/0x110
 [<ffffffff81244b9b>] blk_execute_rq+0x9b/0x100
 [<ffffffff8124f665>] sg_io+0x1a5/0x450
 [<ffffffff8124fd21>] scsi_cmd_ioctl+0x2a1/0x430
 [<ffffffff8124fef2>] scsi_cmd_blk_ioctl+0x42/0x50
 [<ffffffffa00ec97e>] sd_ioctl+0xbe/0x140 [sd_mod]
 [<ffffffff8124bd04>] blkdev_ioctl+0x234/0x840
 [<ffffffff811cb491>] block_ioctl+0x41/0x50
 [<ffffffff811a0df0>] do_vfs_ioctl+0x300/0x520
 [<ffffffff811a1051>] SyS_ioctl+0x41/0x80
 [<ffffffff814b9962>] tracesys+0xd0/0xd5
IB/srp: Store pkey also in srp_target_port
IB/srp: Move ib_destroy_cm_id() call into srp_free_ch_ib()
IB/srp: Separate target and channel variables

Changes:
* Moved channel variables into a new structure (struct srp_rdma_ch).
* Added srp_target_port.ch_list and srp_rdma_ch.lock, entry, target
  and comp_vector.
* cm_id and completion handler context pointer is now of type
  srp_rdma_ch * instead of srp_target_port *.
IB/srp: Add multichannel support

Improve performance by using multiple RDMA/RC channels per SCSI host
for communicating with an SRP target.

Signed-off-by: Bart Van Assche <bvanassche@acm.org>
IB/srp: Remove stale connection retry mechanism
IB/srp: Move more member variables from target to channel
IB/srp: RDMA/CM support
IB/srp: RHEL 7 build fix
IB/srp: Add support for immediate data
IB/srp: RHEL 5 build fix
v2.0.25