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, 5 insertions, 0 deletions

diff --git a/src/vnet/bier/bier_disp_table.h b/src/vnet/bier/bier_disp_table.h
index 6f9380a507f..c5b211001e2 100644
--- a/src/vnet/bier/bier_disp_table.h
+++ b/src/vnet/bier/bier_disp_table.h
@@ -30,6 +30,11 @@
 typedef struct bier_disp_table_t_
 {
     /**
+     * Required for pool_get_aligned
+     */
+    CLIB_CACHE_LINE_ALIGN_MARK(cacheline0);
+
+    /**
      * number of locks on the table
      */
     u16 bdt_locks;