kernel/linux.git/drivers/infiniband/ulp/srp, branch linux-4.16.y

ib_srp: depend on INFINIBAND_ADDR_TRANS

2018-06-20T19:01:29+00:00

[ Upstream commit 5a3bc8a4abbd2d553430218d3a320400dce811b7 ] INFINIBAND_SRP code depends on INFINIBAND_ADDR_TRANS provided symbols. So declare the kconfig dependency. This is necessary to allow for enabling INFINIBAND without INFINIBAND_ADDR_TRANS. Signed-off-by: Greg Thelen Cc: Tarick Bedeir Reviewed-by: Bart Van Assche Signed-off-by: Doug Ledford Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman

IB/srp: Fix completion vector assignment algorithm

2018-04-24T07:43:01+00:00

commit 3a148896b24adf8688dc0c59af54531931677a40 upstream. Ensure that cv_end is equal to ibdev->num_comp_vectors for the NUMA node with the highest index. This patch improves spreading of RDMA channels over completion vectors and thereby improves performance, especially on systems with only a single NUMA node. This patch drops support for the comp_vector login parameter by ignoring the value of that parameter since I have not found a good way to combine support for that parameter and automatic spreading of RDMA channels over completion vectors. Fixes: d92c0da71a35 ("IB/srp: Add multichannel support") Reported-by: Alexander Schmid Signed-off-by: Bart Van Assche Cc: Alexander Schmid Cc: stable@vger.kernel.org Signed-off-by: Jason Gunthorpe Signed-off-by: Greg Kroah-Hartman

IB/srp: Fix srp_abort()

2018-04-24T07:43:01+00:00

commit e68088e78d82920632eba112b968e49d588d02a2 upstream. Before commit e494f6a72839 ("[SCSI] improved eh timeout handler") it did not really matter whether or not abort handlers like srp_abort() called .scsi_done() when returning another value than SUCCESS. Since that commit however this matters. Hence only call .scsi_done() when returning SUCCESS. Signed-off-by: Bart Van Assche Cc: stable@vger.kernel.org Signed-off-by: Jason Gunthorpe Signed-off-by: Greg Kroah-Hartman

IB/srp: Add target_can_queue login parameter

2018-01-23T16:35:05+00:00

Although I'm not sure this parameter is useful for regular SRP users, setting this parameter to 1 has shown to be invaluable for testing the block layer core, SCSI core and device mapper queue running mechanisms. Signed-off-by: Bart Van Assche Signed-off-by: Doug Ledford

IB/srp: Add RDMA/CM support

2018-01-23T16:35:04+00:00

Since the SRP_LOGIN_REQ defined in the SRP standard is larger than what fits in the RDMA/CM login request private data, introduce a new login request format for the RDMA/CM. Note: since srp_daemon and ibsrpdm rely on the subnet manager and since there is no equivalent of the IB subnet manager in non-IB networks, login has to be performed manually for non-IB networks. Signed-off-by: Bart Van Assche Signed-off-by: Doug Ledford

IB/srp: Refactor srp_send_req()

2018-01-18T19:49:22+00:00

This patch does not change any functionality but prepares for the patch that adds RDMA_CM support by making the RDMA_CM patch much easier to read. Signed-off-by: Bart Van Assche Signed-off-by: Doug Ledford

IB/srp: Improve path record query error message

2018-01-18T19:49:22+00:00

Show all path record query parameters if a path record query fails. Signed-off-by: Bart Van Assche Signed-off-by: Doug Ledford

IB/srp: Use kstrtoull() instead of simple_strtoull()

2018-01-18T19:49:22+00:00

Use kstrtoull() since simple_strtoull() is deprecated. This patch improves error checking but otherwise does not change any functionality. Signed-off-by: Bart Van Assche Signed-off-by: Doug Ledford

IB/srp: replace custom implementation of hex2bin()

2017-12-11T23:19:45+00:00

There is no need to have a duplication of the generic library, i.e. hex2bin(). Replace the open coded variant. Signed-off-by: Andy Shevchenko Acked-by: Bart Van Assche Signed-off-by: Jason Gunthorpe

IB/srp: Make CM timeout dependent on subnet timeout

2017-10-18T14:49:54+00:00

For small networks it is safe to reduce the subnet timeout from its default value (18 for opensm) to 16. Make the SRP CM timeout dependent on the subnet timeout such that decreasing the subnet timeout also causes SRP failover and failback to occur faster. Signed-off-by: Bart Van Assche Reviewed-by: Sagi Grimberg Signed-off-by: Doug Ledford