On Thu, Apr 26, 2018 at 07:46:38PM +0000, Raju Rangoju wrote: > Hi Parav, > > The following commit f35faa4ba broke iWARP kernel mode applications. > > commit f35faa4ba9568138eea1c58abb92e8ef415dce41 > Author: Parav Pandit <parav@xxxxxxxxxxxx> > Date: Sun Apr 1 15:08:20 2018 +0300 > > IB/core: Simplify ib_query_gid to always refer to cache > > [root@bhumthang]# nvme discover -t rdma -a 102.1.1.17 > Failed to write to /dev/nvme-fabrics: Invalid argument > > [root@bhumthang]# dmesg > [55961.151787] nvme nvme0: rdma_connect failed (-22). > [55961.151971] nvme nvme0: rdma connection establishment failed (-22) > > ------------ > iser > ------------- > [54714.834984] iw_cxgb4: Chelsio T4/T5 RDMA Driver - version 0.1 > [54714.834987] iw_cxgb4: 0000:04:00.4: Up > [54714.834987] iw_cxgb4: 0000:04:00.4: On-Chip Queues not supported on this device > [54714.855963] ib_srpt MAD registration failed for cxgb4_0-1. > [54714.855972] ib_srpt srpt_add_one(cxgb4_0) failed. > [54715.123119] iw_cxgb4: 0000:07:00.4: Up > [54715.123121] iw_cxgb4: 0000:07:00.4: On-Chip Queues not supported on this device > [54715.125977] cxgb4 0000:07:00.4 enp7s0f4: port module unplugged > [54715.166076] ib_srpt MAD registration failed for cxgb4_1-1. > [54715.166080] ib_srpt srpt_add_one(cxgb4_1) failed. > [54834.322675] iser: iser_route_handler: failure connecting: -22 > [54835.326918] iser: iser_route_handler: failure connecting: -22 > [54836.331221] iser: iser_route_handler: failure connecting: -22 > [54837.335625] iser: iser_route_handler: failure connecting: -22 > [54838.339980] iser: iser_route_handler: failure connecting: -22 > [54839.343882] iser: iser_route_handler: failure connecting: -22 > My validation team reported the same issue on i40iw with 4.17-rc kernels. Some more data. Looks like the failure is because we can't find the cached gid due to the gid idx being wrong in query_gid. rdma_connect cma_connect_iw cma_modify_qp_rtr ib_query_gid ib_get_cached_gid __ib_cache_gid_get (EINVAL) Also, not sure why we call ib_query_gid() in cma_modify_qp_rtr() since nothing is done with returned sgid. Shiraz -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
