wireguard-linux/drivers/infiniband/ulp/iser/iser_memory.c, branch jd/unified-crypt-queue

IB/iser: Always check sig MR before putting it to the free pool

2020-03-26T19:46:54Z

libiscsi calls the check_protection transport handler only if SCSI-Respose is received. So, the handler is never called if iSCSI task is completed for some other reason like a timeout or error handling. And this behavior looks correct. But the iSER does not handle this case properly because it puts a non-checked signature MR to the free pool. Then the error occurs at reusing the MR because it is not allowed to invalidate a signature MR without checking. This commit adds an extra check to iser_unreg_mem_fastreg(), which is a part of the task cleanup flow. Now the signature MR is checked there if it is needed. Link: https://lore.kernel.org/r/20200325151210.1548-1-sergeygo@mellanox.com Signed-off-by: Sergey Gorenko Reviewed-by: Max Gurtovoy Signed-off-by: Jason Gunthorpe

IB/iser: use true,false for bool variable

2020-01-03T23:13:59Z

Fixes coccicheck warning: drivers/infiniband/ulp/iser/iser_memory.c:530:2-21: WARNING: Assignment of 0/1 to bool variable drivers/infiniband/ulp/iser/iser_verbs.c:1096:2-21: WARNING: Assignment of 0/1 to bool variable Link: https://lore.kernel.org/r/1577176812-2238-4-git-send-email-zhengbin13@huawei.com Reported-by: Hulk Robot Signed-off-by: zhengbin Signed-off-by: Jason Gunthorpe

IB/iser: remove redundant macro definitions

2019-10-01T14:27:13Z

Use the general linux definition for 4K and retrieve the rest from it. Link: https://lore.kernel.org/r/1569359148-12312-1-git-send-email-maxg@mellanox.com Signed-off-by: Max Gurtovoy Reviewed-by: Sagi Grimberg Signed-off-by: Jason Gunthorpe

IB/iser: add unlikely checks in the fast path

2019-10-01T14:23:22Z

ib_post_send, ib_post_recv and ib_dma_map_sg operations should succeed unless something unusual happened to the ib device. Link: https://lore.kernel.org/r/1569274369-29217-1-git-send-email-maxg@mellanox.com Signed-off-by: Max Gurtovoy Acked-by: Sagi Grimberg Signed-off-by: Jason Gunthorpe

IB/iser: Unwind WR union at iser_tx_desc

2019-06-24T14:49:27Z

After decreasing WRs array size from 7 to 3 it is more readable to give each WR a descriptive name. Signed-off-by: Israel Rukshin Reviewed-by: Max Gurtovoy Reviewed-by: Christoph Hellwig Reviewed-by: Sagi Grimberg Signed-off-by: Jason Gunthorpe

IB/iser: Use IB_WR_REG_MR_INTEGRITY for PI handover

2019-06-24T14:49:27Z

Using this new API reduces iSER code complexity. It also reduces the maximum number of work requests per task and the need of dealing with multiple MRs (and their registrations and invalidations) per task. It is done by using a single WR and a special MR type (IB_MR_TYPE_INTEGRITY) for PI operation. The setup of the tested benchmark: - 2 servers with 24 cores (1 initiator and 1 target) - 24 target sessions with 1 LUN each - ramdisk backstore - PI active Performance results running fio (24 jobs, 128 iodepth) using write_generate=0 and read_verify=0 (w/w.o patch): bs IOPS(read) IOPS(write) ---- ---------- ---------- 512 1236.6K/1164.3K 1357.2K/1332.8K 1k 1196.5K/1163.8K 1348.4K/1262.7K 2k 1016.7K/921950 1003.7K/931230 4k 662728/600545 595423/501513 8k 385954/384345 333775/277090 16k 222864/222820 170317/170671 32k 116869/114896 82331/82244 64k 55205/54931 40264/40021 Using write_generate=1 and read_verify=1 (w/w.o patch): bs IOPS(read) IOPS(write) ---- ---------- ---------- 512 1090.1K/1030.9K 1303.9K/1101.4K 1k 1057.7K/904583 1318.4K/988085 2k 965226/638799 1008.6K/692514 4k 555479/410151 542414/414517 8k 298675/224964 264729/237508 16k 133485/122481 164625/138647 32k 74329/67615 80143/78743 64k 35716/35519 39294/37334 We get performance improvement at all block sizes. The most significant improvement is when writing 4k bs (almost 30% more iops). Signed-off-by: Israel Rukshin Reviewed-by: Max Gurtovoy Reviewed-by: Christoph Hellwig Reviewed-by: Sagi Grimberg Signed-off-by: Jason Gunthorpe

IB/iser: Remove unused sig_attrs argument

2019-05-21T18:01:05Z

Signed-off-by: Israel Rukshin Reviewed-by: Max Gurtovoy Reviewed-by: Christoph Hellwig Signed-off-by: Jason Gunthorpe

IB/core: Remove ib_sg_dma_address() and ib_sg_dma_len()

2019-02-04T21:34:07Z

Keeping single line wrapper functions is not useful. Hence remove the ib_sg_dma_address() and ib_sg_dma_len() functions. This patch does not change any functionality. Signed-off-by: Bart Van Assche Signed-off-by: Jason Gunthorpe

IB/iser: Pass the correct number of entries for dma mapped SGL

2019-01-18T21:12:24Z

ib_dma_map_sg() augments the SGL into a 'dma mapped SGL'. This process may change the number of entries and the lengths of each entry. Code that touches dma_address is iterating over the 'dma mapped SGL' and must use dma_nents which returned from ib_dma_map_sg(). ib_sg_to_pages() and ib_map_mr_sg() are using dma_address so they must use dma_nents. Fixes: 39405885005a ("IB/iser: Port to new fast registration API") Fixes: bfe066e256d5 ("IB/iser: Reuse ib_sg_to_pages") Signed-off-by: Israel Rukshin Reviewed-by: Max Gurtovoy Acked-by: Sagi Grimberg Signed-off-by: Jason Gunthorpe

RDMA: Start use ib_device_ops

2018-12-12T14:40:16Z

Make all the required change to start use the ib_device_ops structure. Signed-off-by: Kamal Heib Signed-off-by: Jason Gunthorpe