Commit 4671dbd5 authored by Daniel Verkamp's avatar Daniel Verkamp
Browse files

nvme: add compile-time assert for SGL alignment 



Per the NVMe spec, SGL segments must be Qword (8-byte) aligned.  Add a
static assert to make sure this is true for the sgl member of struct
nvme_tracker (assuming the whole nvme_tracker is at least 8-byte aligned).

Change-Id: I827aa40b56de648d83f524a4f1e79c3202b676be
Signed-off-by: default avatarDaniel Verkamp <daniel.verkamp@intel.com>
parent 6a3735e3

lib/nvme/nvme_internal.h

+1 −0
Original line number Diff line number Diff line
@@ -264,6 +264,7 @@ struct nvme_tracker { 
 * and so that there is no padding required to meet alignment requirements.

 */

SPDK_STATIC_ASSERT(sizeof(struct nvme_tracker) == 4096, "nvme_tracker is not 4K");

SPDK_STATIC_ASSERT((offsetof(struct nvme_tracker, u.sgl) & 7) == 0, "SGL must be Qword aligned");





struct spdk_nvme_qpair {