Jason Gunthorpe 071ba4cc55 RDMA: Add rdma_connect_locked() ... There are two flows for handling RDMA_CM_EVENT_ROUTE_RESOLVED, either the handler triggers a completion and another thread does rdma_connect() or the handler directly calls rdma_connect(). In all cases rdma_connect() needs to hold the handler_mutex, but when handler's are invoked this is already held by the core code. This causes ULPs using the 2nd method to deadlock. Provide a rdma_connect_locked() and have all ULPs call it from their handlers. Link: https://lore.kernel.org/r/0-v2-53c22d5c1405+33-rdma_connect_locking_jgg@nvidia.com Reported-and-tested-by: Guoqing Jiang <guoqing.jiang@cloud.ionos.com> Fixes: 2a7cec5381 ("RDMA/cma: Fix locking for the RDMA_CM_CONNECT state") Acked-by: Santosh Shilimkar <santosh.shilimkar@oracle.com> Acked-by: Jack Wang <jinpu.wang@cloud.ionos.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Max Gurtovoy <mgurtovoy@nvidia.com> Reviewed-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>		2020-10-28 09:14:49 -03:00
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iscsi_iser.c	infiniband: fix ulp/iser/iscsi_iser.[hc] kernel-doc notation	2019-10-22 14:45:31 -03:00
iscsi_iser.h	IB/iser: use new shared CQ mechanism	2020-07-29 09:10:31 -03:00
iser_initiator.c	RDMA/iser: Remove support for FMR memory registration	2020-06-02 20:32:53 -03:00
iser_memory.c	RDMA/iser: Remove support for FMR memory registration	2020-06-02 20:32:53 -03:00
iser_verbs.c	RDMA: Add rdma_connect_locked()	2020-10-28 09:14:49 -03:00
Kconfig	treewide: replace '---help---' in Kconfig files with 'help'	2020-06-14 01:57:21 +09:00
Makefile	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00