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 <mgurtovoy@nvidia.com>
Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>

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 */