From 8df1bff57c7e5fc7747b9236561079907d8cf82e Mon Sep 17 00:00:00 2001 From: Max Gurtovoy Date: Tue, 30 Mar 2021 23:01:20 +0000 Subject: [PATCH] nvme-fc: check sgl supported by target SGLs support is mandatory for NVMe/FC, make sure that the target is aligned to the specification. Signed-off-by: Max Gurtovoy Reviewed-by: Chaitanya Kulkarni Signed-off-by: Christoph Hellwig --- drivers/nvme/host/fc.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/nvme/host/fc.c b/drivers/nvme/host/fc.c index f54ffb792acc..921b3315c2f1 100644 --- a/drivers/nvme/host/fc.c +++ b/drivers/nvme/host/fc.c @@ -3099,6 +3099,11 @@ nvme_fc_create_association(struct nvme_fc_ctrl *ctrl) } /* FC-NVME supports normal SGL Data Block Descriptors */ + if (!(ctrl->ctrl.sgls & ((1 << 0) | (1 << 1)))) { + dev_err(ctrl->ctrl.device, + "Mandatory sgls are not supported!\n"); + goto out_disconnect_admin_queue; + } if (opts->queue_size > ctrl->ctrl.maxcmd) { /* warn if maxcmd is lower than queue_size */