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A value of 0 will casue the driver to fail establishing a valid connection to remote target. The following can be seen in the log in this case: iser: iser_connect: connecting to: 1.1.1.88:3260 iser: iser_cma_handler: address resolved (0): status 0 conn 00000000090aa4de id 00000000167d3b5a iser: iser_cma_handler: route resolved (2): status 0 conn 00000000090aa4de id 00000000167d3b5a iser: iscsi_iser_ep_poll: iser conn 00000000090aa4de rc = 0 iser: iser_create_ib_conn_res: setting conn 00000000090aa4de cma_id 00000000167d3b5a qp 00000000efa80660 max_send_wr 4619 iser_cma_handler: established (9): status 0 conn 00000000090aa4de id 00000000167d3b5a iser: iser_connected_handler: remote qpn:1c7 my qpn:1c6 iser: iser_connected_handler: conn 00000000090aa4de: negotiated remote invalidation iser: iscsi_iser_ep_poll: iser conn 00000000090aa4de rc = 1 scsi host10: iSCSI Initiator over iSER mlx5_core 0000:07:00.0: mlx5_cmd_check:769:(pid 616473): CREATE_MKEY(0x200) op_mod(0x0) failed, status bad parameter(0x3), syndrome (0x3bf6f) iser: iser_create_fastreg_desc: Failed to allocate ib_fast_reg_mr err=-22 iser: iser_alloc_rx_descriptors: failed allocating rx descriptors / data buffers iser: iscsi_iser_ep_disconnect: ep 00000000d2040785 iser conn 00000000090aa4de iser: iser_conn_terminate: iser_conn 00000000090aa4de state 3 iser: iser_free_ib_conn_res: freeing conn 00000000090aa4de cma_id 00000000167d3b5a qp 00000000efa80660 iser: iser_device_try_release: device 00000000dc871b1b refcount 0 Link: https://lore.kernel.org/r/20210111145754.56727-4-mgurtovoy@nvidia.com Reviewed-by: Israel Rukshin <israelr@nvidia.com> Signed-off-by: Max Gurtovoy <mgurtovoy@nvidia.com> Reviewed-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.