From 44c3c6257e99c6284f312206de73783575fc8906 Mon Sep 17 00:00:00 2001 From: Max Gurtovoy Date: Thu, 23 Sep 2021 00:55:35 +0300 Subject: nvme-rdma: limit the maximal queue size for RDMA controllers Corrent limit of 1024 isn't valid for some of the RDMA based ctrls. In case the target expose a cap of larger amount of entries (e.g. 1024), the initiator may fail to create a QP with this size. Thus limit to a value that works for all RDMA adapters. Future general solution should use RDMA/core API to calculate this size according to device capabilities and number of WRs needed per NVMe IO request. Signed-off-by: Max Gurtovoy Signed-off-by: Christoph Hellwig --- include/linux/nvme-rdma.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux/nvme-rdma.h') diff --git a/include/linux/nvme-rdma.h b/include/linux/nvme-rdma.h index 3ec8e50efa16..4dd7e6fe92fb 100644 --- a/include/linux/nvme-rdma.h +++ b/include/linux/nvme-rdma.h @@ -6,6 +6,8 @@ #ifndef _LINUX_NVME_RDMA_H #define _LINUX_NVME_RDMA_H +#define NVME_RDMA_MAX_QUEUE_SIZE 128 + enum nvme_rdma_cm_fmt { NVME_RDMA_CM_FMT_1_0 = 0x0, }; -- cgit v1.2.3-73-gaa49b