CEPH_GCM_BLOCK_LEN
#define CEPH_EPILOGUE_SECURE_LEN (CEPH_GCM_BLOCK_LEN + CEPH_GCM_TAG_LEN)
u8 pad[CEPH_GCM_BLOCK_LEN - 1];
CEPH_GCM_BLOCK_LEN + (add_tag ? CEPH_GCM_TAG_LEN : 0));
return !IS_ALIGNED(len, CEPH_GCM_BLOCK_LEN);
return ALIGN(len, CEPH_GCM_BLOCK_LEN);
#define MIDDLE_PAD(p) (FRONT_PAD(p) + CEPH_GCM_BLOCK_LEN)
#define DATA_PAD(p) (MIDDLE_PAD(p) + CEPH_GCM_BLOCK_LEN)