kernel/linux.git/drivers/infiniband/ulp/iser, branch v4.4.171

iser: set sector for ambiguous mr status errors

2018-12-13T08:21:29+00:00

commit 24c3456c8d5ee6fc1933ca40f7b4406130682668 upstream. If for some reason we failed to query the mr status, we need to make sure to provide sufficient information for an ambiguous error (guard error on sector 0). Fixes: 0a7a08ad6f5f ("IB/iser: Implement check_protection") Cc: Reported-by: Dan Carpenter Signed-off-by: Sagi Grimberg Signed-off-by: Jason Gunthorpe Signed-off-by: Greg Kroah-Hartman

RDMA/iser: Fix possible mr leak on device removal event

2017-12-25T13:22:12+00:00

[ Upstream commit ea174c9573b0e0c8bc1a7a90fe9360ccb7aa9cbb ] When the rdma device is removed, we must cleanup all the rdma resources within the DEVICE_REMOVAL event handler to let the device teardown gracefully. When this happens with live I/O, some memory regions are occupied. Thus, track them too and dereg all the mr's. We are safe with mr access by iscsi_iser_cleanup_task. Reported-by: Raju Rangoju Signed-off-by: Sagi Grimberg Reviewed-by: Max Gurtovoy Reviewed-by: Max Gurtovoy Signed-off-by: Doug Ledford Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman

IB/iser: use sector_div instead of do_div

2015-12-07T21:42:33+00:00

do_div is the wrong way to divide a sector_t, as it is less efficient when sector_t is 32-bit wide. With the upcoming do_div optimizations, the kernel starts warning about this: drivers/infiniband/ulp/iser/iser_verbs.c:1296:4: note: in expansion of macro 'do_div' include/asm-generic/div64.h:224:22: warning: passing argument 1 of '__div64_32' from incompatible pointer type This changes the code to use sector_div instead, which always produces optimal code. Signed-off-by: Arnd Bergmann Reviewed-by: Sagi Grimberg Signed-off-by: Doug Ledford

IB/iser: Port to new fast registration API

2015-10-29T02:27:18+00:00

Remove fastreg page list allocation as the page vector is now private to the provider. Instead of constructing the page list and fast_req work request, call ib_map_mr_sg and construct ib_reg_wr. Signed-off-by: Sagi Grimberg Acked-by: Christoph Hellwig Signed-off-by: Doug Ledford

Merge branch 'wr-cleanup' into k.o/for-4.4

2015-10-29T02:23:34+00:00

IB/cma: Add support for network namespaces

2015-10-28T16:32:48+00:00

Add support for network namespaces in the ib_cma module. This is accomplished by: 1. Adding network namespace parameter for rdma_create_id. This parameter is used to populate the network namespace field in rdma_id_private. rdma_create_id keeps a reference on the network namespace. 2. Using the network namespace from the rdma_id instead of init_net inside of ib_cma, when listening on an ID and when looking for an ID for an incoming request. 3. Decrementing the reference count for the appropriate network namespace when calling rdma_destroy_id. In order to preserve the current behavior init_net is passed when calling from other modules. Signed-off-by: Guy Shapiro Signed-off-by: Haggai Eran Signed-off-by: Yotam Kenneth Signed-off-by: Shachar Raindel Signed-off-by: Doug Ledford

IB/iser: Enable SG clustering

2015-10-28T16:26:06+00:00

iser is perfectly capable supporting SG clustering as it translates the SG list to a page vector. Enabling SG clustering can dramatically reduce the number of SG elements, which doesn't make much of a difference at this point, but with arbitrary SG list support, reducing the number of SG elements can benefit greatly as as it would reduce the length of the HW descriptors array. Signed-off-by: Sagi Grimberg Reviewed-by: Christoph Hellwig Signed-off-by: Doug Ledford

IB/iser: set block queue_virt_boundary

2015-10-28T16:26:06+00:00

The block layer can reliably guarantee that SG lists won't contain gaps (page unaligned) if a driver set the queue virt_boundary. With this setting the block layer will: - refuse merges if bios are not aligned to the virtual boundary - split bios/requests that are not aligned to the virtual boundary - or, bounce buffer SG_IOs that are not aligned to the virtual boundary Since iser is working in 4K page size, set the virt_boundary to 4K pages. With this setting, we can now safely remove the bounce buffering logic in iser. Signed-off-by: Sagi Grimberg Reviewed-by: Christoph Hellwig Signed-off-by: Doug Ledford

IB/iser: Remove an unused variable

2015-10-22T22:37:14+00:00

Detected this by compiling with W=1. Signed-off-by: Bart Van Assche Cc: Sagi Grimberg Signed-off-by: Doug Ledford

IB/iser: fix a comment typo

2015-10-21T20:41:54+00:00

Just fix a typo in the code comment. Signed-off-by: Geliang Tang Acked-by: Sagi Grimberg Signed-off-by: Doug Ledford