Eric Lee / smarc-fsl-linux-kernel

11 Mar, 2016

1 commit

  • 0194621b2   IB/rdmavt: Create module framework and handle driver registration ... Browse Code »

    This patch introduces the basics for a new module called rdma_vt. This new
    driver is a software implementation of the InfiniBand verbs and aims to
    replace the multiple implementations that exist and duplicate each others'
    code.

    While the call to actually register the device with the IB core happens in
    rdma_vt, most of the work is still done in the drivers themselves. This
    will be changing in a follow on patch this is just laying the groundwork
    for this infrastructure.

    Reviewed-by: Ira Weiny
    Reviewed-by: Mike Marciniszyn
    Signed-off-by: Dennis Dalessandro
    Signed-off-by: Doug Ledford

    Dennis Dalessandro
     

03 Jun, 2014

1 commit

  • 729ee4efc   IB: Allow build of hw/ and ulp/ subdirectories independently ... Browse Code »

    It is not possible to build only the drivers/infiniband/hw/ (or ulp/)
    subdirectory with command such as:

    $ make ARCH=x86_64 O=./obj-x86_64/ drivers/infiniband/hw/

    This fails with following error messages:

    make[2]: Nothing to be done for `all'.
    make[2]: Nothing to be done for `relocs'.
    CHK include/config/kernel.release
    Using /home/ydroneaud/src/linux as source for kernel
    GEN /home/ydroneaud/src/linux/obj-x86_64/Makefile
    CHK include/generated/uapi/linux/version.h
    CHK include/generated/utsrelease.h
    CALL /home/ydroneaud/src/linux/scripts/checksyscalls.sh
    /home/ydroneaud/src/linux/scripts/Makefile.build:44: /home/ydroneaud/src/linux/drivers/infiniband/hw/Makefile: No such file or directory
    make[2]: *** No rule to make target `/home/ydroneaud/src/linux/drivers/infiniband/hw/Makefile'. Stop.
    make[1]: *** [drivers/infiniband/hw/] Error 2
    make: *** [sub-make] Error 2

    This patch creates a Makefile in hw/ and ulp/ and moves each
    corresponding parts of drivers/infiniband/Makefile in the new
    Makefiles.

    It should not break build except if some hw/ drivers or ulp/ were
    allowed previously to be built while CONFIG_INFINIBAND is set to 'n',
    but according to drivers/infiniband/Kconfig, it's not possible. So it
    should be safe to apply.

    Signed-off-by: Yann Droneaud
    Reviewed-by: Bart Van Assche
    Signed-off-by: Roland Dreier

    Yann Droneaud
     

14 Jan, 2014

1 commit

09 Jul, 2013

1 commit

  • e126ba97d   mlx5: Add driver for Mellanox Connect-IB adapters ... Browse Code »

    The driver is comprised of two kernel modules: mlx5_ib and mlx5_core.
    This partitioning resembles what we have for mlx4, except that mlx5_ib
    is the pci device driver and not mlx5_core.

    mlx5_core is essentially a library that provides general functionality
    that is intended to be used by other Mellanox devices that will be
    introduced in the future. mlx5_ib has a similar role as any hardware
    device under drivers/infiniband/hw.

    Signed-off-by: Eli Cohen
    Signed-off-by: Jack Morgenstein
    Signed-off-by: Or Gerlitz

    [ Merge in coccinelle fixes from Fengguang Wu .
    - Roland ]

    Signed-off-by: Roland Dreier

    Eli Cohen
     

25 Apr, 2013

1 commit

  • b8d26b3be   iser-target: Add iSCSI Extensions for RDMA (iSER) target driver ... Browse Code »

    This patch adds support for iSCSI Extensions for RDMA target mode,
    and includes CQ pooling per isert_device context distributed across
    multiple active iser target sessions.

    It also uses cmwq process context for RX / TX ib_post_cq() polling
    via isert_cq_desc->cq_[rx,tx]_work invoked by isert_cq_[rx,tx]_callback()
    hardIRQ context callbacks.

    v5 changes:

    - Use ISER_RECV_DATA_SEG_LEN instead of hardcoded value in ISER_RX_PAD_SIZE (Or)
    - Fix make W=1 warnings (Or)
    - Add missing depends on NET && INFINIBAND_ADDR_TRANS in Kconfig (Randy + Or)
    - Make isert_device_find_by_ib_dev() return proper ERR_PTR (Wei Yongjun)
    - Properly setup iscsi_np->np_sockaddr in isert_setup_np() (Shlomi + nab)
    - Add special case for early ISCSI_OP_SCSI_CMD exception handling (nab)

    v4 changes:
    - Mark isert_cq_rx_work as static (Or)
    - Drop unnecessary ib_dma_sync_single_for_cpu + ib_dma_sync_single_for_device
    calls for isert_cmd->sense_buf_dma from isert_put_response (Or)
    - Use 12288 for ISER_RX_PAD_SIZE base to save extra page per
    struct iser_rx_desc (Or + nab)
    - Drop now unnecessary isert_rx_desc usage, and convert RX users to
    iser_rx_desc (Or + nab)
    - Move isert_[alloc,free]_rx_descriptors() ahead of
    isert_create_device_ib_res() usage (nab)
    - Mark isert_cq_[rx,tx]_callback() + prototypes as static
    - Fix 'warning: 'ret' may be used uninitialized' warning for
    isert_create_device_ib_res on powerpc allmodconfig (fengguang + nab)
    - Fix 'warning: 'ret' may be used uninitialized' warning for
    isert_connect_request on i386 allyesconfig (fengguang + nab)
    - Fix pr_debug conversion specification in isert_rx_completion()
    (fengguang + nab)
    - Drop unnecessary isert_conn->conn_cm_id != NULL check in
    isert_connect_release causing the build warning:
    "variable dereferenced before check 'isert_conn->conn_cm_id'"
    - Fix isert_lid + isert_np leak in isert_setup_np failure path
    - Add isert_conn->conn_wait_comp_err usage in isert_free_conn()
    for isert_cq_comp_err completion path
    - Add isert_conn->logout_posted bit to determine decrement of
    isert_conn->post_send_buf_count from logout response completion
    - Always set ISER_CONN_DOWN from isert_disconnect_work() callback

    v3 changes:

    - Convert to use per isert_cq_desc->cq_[rx,tx]_work + drop tasklets (Or + nab)
    - Move IB_EVENT_QP_LAST_WQE_REACHED warn into correct
    isert_qp_event_callback (Or)
    - Drop unnecessary IB_ACCESS_REMOTE_* access flag usage in
    isert_create_device_ib_res (Or)
    - Add common isert_init_send_wr(), and convert isert_put_* calls (Or)
    - Move to verbs+core logic to single ib_isert.[c,h] (Or + nab)
    - Add kmem_cache isert_cmd_cache usage for descriptor allocation (nab)
    - Move common ib_post_send() logic used by isert_put_*() to
    isert_post_response() (nab)
    - Add isert_put_reject call in isert_response_queue() for posting
    ISCSI_REJECT response. (nab)
    - Add ISTATE_SEND_REJECT checking in isert_do_control_comp. (nab)

    v2 changes:

    - Drop unused ISERT_ADDR_ROUTE_TIMEOUT define
    - Add rdma_notify() call for IB_EVENT_COMM_EST in isert_qp_event_callback()
    - Make isert_query_device() less verbose
    - Drop unused RDMA_CM_EVENT_ADDR_ERROR and RDMA_CM_EVENT_ROUTE_ERROR
    cases from isert_cma_handler()
    - Drop unused rdma/ib_fmr_pool.h include
    - Update isert_conn_setup_qp() to assign cq based upon least used
    - Add isert_create_device_ib_res() to setup PD, CQs and MRs for each
    underlying struct ib_device, instead of using per isert_conn resources.
    - Add isert_free_device_ib_res() to release PD, CQs and MRs for each
    underlying struct ib_device.
    - Add isert_device_find_by_ib_dev()
    - Change isert_connect_request() to drop PD, CQs and MRs allocation,
    and use isert_device_find_by_ib_dev() instead.
    - Add isert_device_try_release()
    - Change isert_connect_release() to decrement cq_active_qps, and drop
    PD, CQs and MRs resource release.
    - Update isert_connect_release() to call isert_device_try_release()
    - Make isert_create_device_ib_res() determine device->cqs_used based
    upon num_online_cpus()
    - Drop misleading isert_dump_ib_wc() usage
    - Drop unused rdma/ib_fmr_pool.h include
    - Use proper xfer_len for login PDUs in isert_rx_completion()
    - Add isert_release_cmd() usage
    - Change isert_alloc_cmd() to setup iscsi_cmd.release_cmd() pointer
    - Change isert_put_cmd() to perform per iscsi_opcode specific release
    logic
    - Add isert_unmap_cmd() call for ISCSI_OP_SCSI_CMD from isert_put_cmd()
    - Change isert_send_completion() to call
    atomic_dec(&isert_conn->post_send_buf_count)
    based upon per iscsi_opcode logic
    - Drop ISTATE_REMOVE processing from isert_immediate_queue()
    - Drop ISTATE_SEND_DATAIN processing from isert_response_queue()
    - Drop ISTATE_SEND_STATUS processing from isert_response_queue()
    - Drop iscsit_transport->iscsit_unmap_cmd() and ->iscsit_free_cmd()
    - Convert iser_cq_tx_tasklet() to use struct isert_cq_desc pooling logic
    - Convert isert_cq_tx_callback() to use struct isert_cq_desc pooling
    logic
    - Convert iser_cq_rx_tasklet() to use struct isert_cq_desc pooling logic
    - Convert isert_cq_rx_callback() to use struct isert_cq_desc pooling
    logic
    - Add explict iscsit_stop_dataout_timer() call to
    isert_do_rdma_read_comp()
    - Use isert_get_dataout() for iscsit_transport->iscsit_get_dataout()
    caller
    - Drop ISTATE_SEND_R2T processing from isert_immediate_queue()
    - Drop unused rdma/ib_fmr_pool.h include
    - Drop isert_cmd->cmd_kref in favor of se_cmd->cmd_kref usage
    - Add struct isert_device in order to support multiple EQs + CQ pooling
    - Add struct isert_cq_desc
    - Drop tasklets and cqs from isert_conn
    - Bump ISERT_MAX_CQ to 64
    - Various minor checkpatch fixes

    Signed-off-by: Or Gerlitz
    Signed-off-by: Nicholas Bellinger

    Nicholas Bellinger
     

09 May, 2012

1 commit

16 Dec, 2011

1 commit

  • a42d985bd   ib_srpt: Initial SRP Target merge for v3.3-rc1 ... Browse Code »

    This patch adds the kernel module ib_srpt SCSI RDMA Protocol (SRP) target
    implementation conforming to the SRP r16a specification for the mainline
    drivers/target infrastructure.

    This driver was originally developed by Vu Pham and has been optimized by
    Bart Van Assche and merged into upstream LIO based on his srpt-lio-4.1
    branch here:

    https://github.com/bvanassche/srpt-lio/commits/srpt-lio-4.1/

    This updated patch also contains the following two changes from
    lio-core-2.6.git/master. One is to fix a bug with 1 >= task->task_sg[]
    chained mappings in ib_srpt, and the other to convert the configfs control
    plane to reference IB Port GUID and struct srpt_port directly following
    mainline v4.x target_core_fabric_configfs.c convertion for ib_srpt
    to work with rtslib/rtsadmin v2 code.

    These seperate patches can be found here:

    ib_srpt: Fix bug with chainged SGLs in srpt_map_sg_to_ib_sge
    http://www.risingtidesystems.com/git/?p=lio-core-2.6.git;a=commitdiff;h=ea485147563b6555a97dbf811825fbb586519252

    ib_srpt: Convert se_wwn endpoint reference to struct srpt_port->port_wwn
    http://www.risingtidesystems.com/git/?p=lio-core-2.6.git;a=commitdiff;h=4e544a210acb227df1bb4ca5086e65bdf4e648ea

    This also includes the following recent v1 -> v2 review changes:

    ib_srpt: Fix potential out-of-bounds array access
    ib_srpt: Avoid failed multipart RDMA transfers
    ib_srpt: Fix srpt_alloc_fabric_acl failure case return value
    ib_srpt: Update comments to reference $driver/$port layout
    ib_srpt: Fix sport->port_guid formatting code
    ib_srpt: Remove legacy use_port_guid_in_session_name module parameter
    ib_srpt: Convert srp_max_rdma_size into per port configfs attribute
    ib_srpt: Convert srp_max_rsp_size into per port configfs attribute
    ib_srpt: Convert srpt_sq_size into per port configfs attribute

    and v2 -> v3 review changes:

    ib_srpt: Fix possible race with srp_sq_size in srpt_create_ch_ib
    ib_srpt: Fix possible race with srp_max_rsp_size in srpt_release_channel_work
    ib_srpt: Fix up MAX_SRPT_RDMA_SIZE define
    ib_srpt: Make srpt_map_sg_to_ib_sge() failure case return -EAGAIN
    ib_srpt: Convert port_guid to use subnet_prefix + interface_id formatting
    ib_srpt: Make srpt_check_stop_free return kref_put status
    ib_srpt: Make compilation with BUG=n proceed`
    ib_srpt: Use new target_core_fabric.h include
    ib_srpt: Check hex2bin() return code to silence build warning

    Cc: Bart Van Assche
    Cc: Roland Dreier
    Cc: Christoph Hellwig
    Cc: Vu Pham
    Cc: David Dillow
    Signed-off-by: Nicholas A. Bellinger

    Bart Van Assche
     

24 May, 2010

1 commit

22 Apr, 2010

1 commit

05 Feb, 2008

1 commit

09 May, 2007

1 commit

  • 225c7b1fe   IB/mlx4: Add a driver Mellanox ConnectX InfiniBand adapters ... Browse Code »

    Add an InfiniBand driver for Mellanox ConnectX adapters. Because
    these adapters can also be used as ethernet NICs and Fibre Channel
    HBAs, the driver is split into two modules:

    mlx4_core: Handles low-level things like device initialization and
    processing firmware commands. Also controls resource allocation
    so that the InfiniBand, ethernet and FC functions can share a
    device without stepping on each other.

    mlx4_ib: Handles InfiniBand-specific things; plugs into the
    InfiniBand midlayer.

    Signed-off-by: Roland Dreier

    Roland Dreier
     

13 Feb, 2007

1 commit

23 Sep, 2006

3 commits

22 Jun, 2006

1 commit

01 Apr, 2006

1 commit

03 Nov, 2005

1 commit

17 Apr, 2005

1 commit

  • 1da177e4c   Linux-2.6.12-rc2 ... Browse Code »

    Initial git repository build. I'm not bothering with the full history,
    even though we have it. We can create a separate "historical" git
    archive of that later if we want to, and in the meantime it's about
    3.2GB when imported into git - space that would just make the early
    git days unnecessarily complicated, when we don't have a lot of good
    infrastructure for it.

    Let it rip!

    Linus Torvalds