kernel.git/drivers/infiniband/ulp/isert, branch linux-4.8.y

IB/isert: Properly release resources on DEVICE_REMOVAL

2016-09-02T17:46:32Z

When the low level driver exercises the hot unplug they would call rdma_cm cma_remove_one which would fire DEVICE_REMOVAL event to all cma consumers. Now, if consumer doesn't make sure they destroy all IB objects created on that IB device instance prior to finalizing all processing of DEVICE_REMOVAL callback, rdma_cm will let the lld to de-register with IB core and destroy the IB device instance. And if the consumer calls (say) ib_dereg_mr(), it will crash since that dev object is NULL. In the current implementation, iser-target just initiates the cleanup and returns from DEVICE_REMOVAL callback. This deferred work creates a race between iser-target cleaning IB objects(say MR) and lld destroying IB device instance. This patch includes the following fixes -> make sure that consumer frees all IB objects associated with device instance -> return non-zero from the callback to destroy the rdma_cm id Signed-off-by: Raju Rangoju Acked-by: Sagi Grimberg Signed-off-by: Doug Ledford

IB/isert: fix error return code in isert_alloc_login_buf()

2016-08-22T18:26:55Z

Fix to return error code -ENOMEM from the alloc error handling case instead of 0, as done elsewhere in this function. Signed-off-by: Wei Yongjun Acked-by: Sagi Grimberg Reviewed-by: Leon Romanovsky Signed-off-by: Doug Ledford

IB/isert: Remove an unused member variable

2016-08-02T16:02:41Z

Signed-off-by: Bart Van Assche Reviewed-by: Sagi Grimberg Reviewed-by: Christoph Hellwig Tested-by: Steve Wise Tested-by: Laurence Oberman Cc: Parav Pandit Cc: Nicholas Bellinger Signed-off-by: Doug Ledford

Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending

2016-05-28T19:04:17Z

Pull SCSI target updates from Nicholas Bellinger: "Here are the outstanding target pending updates for v4.7-rc1. The highlights this round include: - Allow external PR/ALUA metadata path be defined at runtime via top level configfs attribute (Lee) - Fix target session shutdown bug for ib_srpt multi-channel (hch) - Make TFO close_session() and shutdown_session() optional (hch) - Drop se_sess->sess_kref + convert tcm_qla2xxx to internal kref (hch) - Add tcm_qla2xxx endpoint attribute for basic FC jammer (Laurence) - Refactor iscsi-target RX/TX PDU encode/decode into common code (Varun) - Extend iscsit_transport with xmit_pdu, release_cmd, get_rx_pdu, validate_parameters, and get_r2t_ttt for generic ISO offload (Varun) - Initial merge of cxgb iscsi-segment offload target driver (Varun) The bulk of the changes are Chelsio's new driver, along with a number of iscsi-target common code improvements made by Varun + Co along the way" * 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: (29 commits) iscsi-target: Fix early sk_data_ready LOGIN_FLAGS_READY race cxgbit: Use type ISCSI_CXGBIT + cxgbit tpg_np attribute iscsi-target: Convert transport drivers to signal rdma_shutdown iscsi-target: Make iscsi_tpg_np driver show/store use generic code tcm_qla2xxx Add SCSI command jammer/discard capability iscsi-target: graceful disconnect on invalid mapping to iovec target: need_to_release is always false, remove redundant check and kfree target: remove sess_kref and ->shutdown_session iscsi-target: remove usage of ->shutdown_session tcm_qla2xxx: introduce a private sess_kref target: make close_session optional target: make ->shutdown_session optional target: remove acl_stop target: consolidate and fix session shutdown cxgbit: add files for cxgbit.ko iscsi-target: export symbols iscsi-target: call complete on conn_logout_comp iscsi-target: clear tx_thread_active iscsi-target: add new offload transport type iscsi-target: use conn_transport->transport_type in text rsp ...

iscsi-target: Convert transport drivers to signal rdma_shutdown

2016-05-17T05:23:33Z

Instead of special casing the handful of callers that check for iser-target rdma verbs specific shutdown, use a simple flag at iscsit_transport->rdma_shutdown so each driver can signal this. Also, update iscsi-target/tcp + cxgbit to rdma_shutdown = false. Cc: Varun Prakash Cc: Hariprasad Shenai Cc: Christoph Hellwig Cc: Sagi Grimberg Signed-off-by: Nicholas Bellinger

IB/isert: convert to the generic RDMA READ/WRITE API

2016-05-13T17:37:20Z

Replace the homegrown RDMA READ/WRITE code in isert with the generic API, which also adds iWarp support to the I/O path as a side effect. Note that full iWarp operation will need a few additional patches from Steve. Signed-off-by: Christoph Hellwig Signed-off-by: Doug Ledford

IB/core: Add passing an offset into the SG to ib_map_mr_sg

2016-05-13T17:37:11Z

Signed-off-by: Christoph Hellwig Tested-by: Steve Wise Reviewed-by: Bart Van Assche Reviewed-by: Sagi Grimberg Reviewed-by: Steve Wise Signed-off-by: Doug Ledford

iscsi-target: add void (*iscsit_get_rx_pdu)()

2016-05-10T06:12:07Z

Add void (*iscsit_get_rx_pdu)() to struct iscsit_transport, iscsi-target uses this callback to receive and process Rx iSCSI PDUs. cxgbit.ko needs this callback to reuse iscsi-target Rx thread. Signed-off-by: Varun Prakash Acked-by: Sagi Grimberg Signed-off-by: Nicholas Bellinger

iser-target: Use ib_drain_qp

2016-03-31T03:05:15Z

Now the rdma core offers a QP draining service in v4.6-rc1, use it instead of our own. Signed-off-by: Sagi Grimberg Reported-by: Christoph Hellwig Signed-off-by: Nicholas Bellinger

iser-target: Kill the ->isert_cmd back pointer in struct iser_tx_desc

2016-03-11T05:48:51Z

We only use the pointer when processing regular iSER commands, and it then always points to the struct iser_cmd that contains the TX descriptor. Remove it and rely on container_of to save a little space and avoid a pointer that is updated multiple times per processed command. Signed-off-by: Christoph Hellwig Signed-off-by: Sagi Grimberg Signed-off-by: Nicholas Bellinger