The following code is in isert_conn_setup_qp() in ib_isert.c: /* * FIXME: Use devattr.max_sge - 2 for max_send_sge as * work-around for RDMA_READ.. */ attr.cap.max_send_sge = device->dev_attr.max_sge - 2;
It's not clear from the comment what this is a work-around for, and I wasn't able to figure it out from looking at logs. In trying to get isert working with ocrdma I ran into a problem where the code thought there was only 1 send SGE available when in fact the device has 3. Then I found the above work-around, which explained the problem. Removing this (setting attr.cap.max_send_sge to device->dev_attr.max_sge) fixes the problem with isert and ocrdma, but I don't know what other side effects that might have. Thanks, Chris -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html