Harmonize vec/pool_get_aligned object sizes and alignment requests

Object sizes must evenly divide alignment requests, or vice
versa. Otherwise, only the first object will be aligned as
requested.

Three choices: add CLIB_CACHE_LINE_ALIGN_MARK(align_me) at
the end of structures, manually pad to an even divisor or multiple of
the alignment request, or use plain vectors/pools.

static assert for enforcement.

Change-Id: I41aa6ff1a58267301d32aaf4b9cd24678ac1c147
Signed-off-by: Dave Barach <dbarach@cisco.com>

1 files changed, 9 insertions, 4 deletions

diff --git a/src/vnet/qos/qos_egress_map.h b/src/vnet/qos/qos_egress_map.h
index f4b282cb7ba..92baf6bf3b2 100644
--- a/src/vnet/qos/qos_egress_map.h
+++ b/src/vnet/qos/qos_egress_map.h
@@ -36,10 +36,15 @@ typedef u32 qos_egress_map_id_t;
  */
 typedef struct qos_egress_map_t_
 {
-    /**
-     * The array of output mapped values;
-     *   output = eq_qos[input-source][input-value]
-     */
+  /**
+   * Required for pool_get_aligned
+   */
+  CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
+
+  /**
+   * The array of output mapped values;
+   *   output = eq_qos[input-source][input-value]
+   */
   qos_bits_t qem_output[QOS_N_SOURCES][256];
 } qos_egress_map_t;