kernel/linux.git/drivers/infiniband/ulp/srp, branch v5.16

scsi: RDMA/srp: Switch to attribute groups

2021-10-17T01:45:53+00:00

struct device supports attribute groups directly but does not support struct device_attribute directly. Hence switch to attribute groups. Link: https://lore.kernel.org/r/20211012233558.4066756-5-bvanassche@acm.org Signed-off-by: Bart Van Assche Signed-off-by: Martin K. Petersen

scsi: ib_srp: Call scsi_done() directly

2021-10-17T01:28:43+00:00

Conditional statements are faster than indirect calls. Hence call scsi_done() directly. Link: https://lore.kernel.org/r/20211007202923.2174984-6-bvanassche@acm.org Signed-off-by: Bart Van Assche Signed-off-by: Martin K. Petersen

scsi: RDMA/srp: Use scsi_cmd_to_rq() instead of scsi_cmnd.request

2021-08-12T02:25:37+00:00

Prepare for removal of the request pointer by using scsi_cmd_to_rq() instead. This patch does not change any functionality. Link: https://lore.kernel.org/r/20210809230355.8186-10-bvanassche@acm.org Reviewed-by: Hannes Reinecke Signed-off-by: Bart Van Assche Signed-off-by: Martin K. Petersen

Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

2021-07-02T22:14:36+00:00

Pull SCSI updates from James Bottomley: "This series consists of the usual driver updates (ufs, ibmvfc, megaraid_sas, lpfc, elx, mpi3mr, qedi, iscsi, storvsc, mpt3sas) with elx and mpi3mr being new drivers. The major core change is a rework to drop the status byte handling macros and the old bit shifted definitions and the rest of the updates are minor fixes" * tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (287 commits) scsi: aha1740: Avoid over-read of sense buffer scsi: arcmsr: Avoid over-read of sense buffer scsi: ips: Avoid over-read of sense buffer scsi: ufs: ufs-mediatek: Add missing of_node_put() in ufs_mtk_probe() scsi: elx: libefc: Fix IRQ restore in efc_domain_dispatch_frame() scsi: elx: libefc: Fix less than zero comparison of a unsigned int scsi: elx: efct: Fix pointer error checking in debugfs init scsi: elx: efct: Fix is_originator return code type scsi: elx: efct: Fix link error for _bad_cmpxchg scsi: elx: efct: Eliminate unnecessary boolean check in efct_hw_command_cancel() scsi: elx: efct: Do not use id uninitialized in efct_lio_setup_session() scsi: elx: efct: Fix error handling in efct_hw_init() scsi: elx: efct: Remove redundant initialization of variable lun scsi: elx: efct: Fix spelling mistake "Unexected" -> "Unexpected" scsi: lpfc: Fix build error in lpfc_scsi.c scsi: target: iscsi: Remove redundant continue statement scsi: qla4xxx: Remove redundant continue statement scsi: ppa: Switch to use module_parport_driver() scsi: imm: Switch to use module_parport_driver() scsi: mpt3sas: Fix error return value in _scsih_expander_add() ...

scsi: core: Drop obsolete Linux-specific SCSI status codes

2021-06-01T03:59:18+00:00

Originally the SCSI subsystem has been using 'special' SCSI status codes, which were the SAM-specified ones but shifted by 1. As most drivers have now been modified to use the SAM-specified ones, having two nearly identical sets of definitions only causes confusion. The Linux-specifed SCSI status codes have been marked obsolete for several years so drop them and use the SAM-specified status codes throughout. Link: https://lore.kernel.org/r/20210427083046.31620-41-hare@suse.de Reviewed-by: Bart Van Assche Reviewed-by: Douglas Gilbert Signed-off-by: Hannes Reinecke Signed-off-by: Martin K. Petersen

RDMA/srp: Use DEVICE_ATTR_*() macros

2021-05-28T23:40:29+00:00

Use DEVICE_ATTR_*() helpers instead of plain DEVICE_ATTR, which makes the code a bit shorter and easier to read. Link: https://lore.kernel.org/r/20210528125750.20788-1-yuehaibing@huawei.com Signed-off-by: YueHaibing Signed-off-by: Jason Gunthorpe

RDMA/srp: Make struct scsi_cmnd and struct srp_request adjacent

2021-05-28T23:21:21+00:00

Define .init_cmd_priv and .exit_cmd_priv callback functions in struct scsi_host_template. Set .cmd_size such that the SCSI core allocates per-command private data. Use scsi_cmd_priv() to access that private data. Remove the req_ring pointer from struct srp_rdma_ch since it is no longer necessary. Convert srp_alloc_req_data() and srp_free_req_data() into functions that initialize one instance of the SRP-private command data. This is a micro-optimization since this patch removes several pointer dereferences from the hot path. Note: due to commit e73a5e8e8003 ("scsi: core: Only return started requests from scsi_host_find_tag()"), it is no longer necessary to protect the completion path against duplicate responses. Link: https://lore.kernel.org/r/20210524041211.9480-6-bvanassche@acm.org Signed-off-by: Bart Van Assche Signed-off-by: Jason Gunthorpe

RDMA/srp: Fix a recently introduced memory leak

2021-05-28T23:21:21+00:00

Only allocate a memory registration list if it will be used and if it will be freed. Link: https://lore.kernel.org/r/20210524041211.9480-5-bvanassche@acm.org Reviewed-by: Max Gurtovoy Fixes: f273ad4f8d90 ("RDMA/srp: Remove support for FMR memory registration") Signed-off-by: Bart Van Assche Signed-off-by: Jason Gunthorpe

RDMA/srp: Add more structure size checks

2021-05-28T23:21:20+00:00

Before modifying how the __packed attribute is used, add compile time size checks for the structures that will be modified. Link: https://lore.kernel.org/r/20210524041211.9480-3-bvanassche@acm.org Reviewed-by: Leon Romanovsky Cc: Nicolas Morey-Chaisemartin Signed-off-by: Bart Van Assche Signed-off-by: Jason Gunthorpe

RDMA/srp: Fix support for unpopulated and unbalanced NUMA nodes

2021-02-17T00:01:50+00:00

The current code computes a number of channels per SRP target and spreads them equally across all online NUMA nodes. Each channel is then assigned a CPU within this node. In the case of unbalanced, or even unpopulated nodes, some channels do not get a CPU associated and thus do not get connected. This causes the SRP connection to fail. This patch solves the issue by rewriting channel computation and allocation: - Drop channel to node/CPU association as it had no real effect on locality but added unnecessary complexity. - Tweak the number of channels allocated to reduce CPU contention when possible: - Up to one channel per CPU (instead of up to 4 by node) - At least 4 channels per node, unless ch_count module parameter is used. Link: https://lore.kernel.org/r/9cb4d9d3-30ad-2276-7eff-e85f7ddfb411@suse.com Signed-off-by: Nicolas Morey-Chaisemartin Reviewed-by: Bart Van Assche Signed-off-by: Jason Gunthorpe