d/numam-spdk
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

nvme: add compile-time assert for SGL alignment

Browse Source 
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: Daniel Verkamp <daniel.verkamp@intel.com>
This commit is contained in:
Daniel Verkamp 2016-03-22 13:47:51 -07:00
parent 6a3735e393
commit 4671dbd53f
1 changed files with 1 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
lib/nvme/nvme_internal.h
View File

@ -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 {