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/dpo/classify_dpo.h b/src/vnet/dpo/classify_dpo.h
index 48f4b2bf8a5..439727d351f 100644
--- a/src/vnet/dpo/classify_dpo.h
+++ b/src/vnet/dpo/classify_dpo.h
@@ -25,6 +25,11 @@
  */
 typedef struct classify_dpo_t
 {
+    /**
+     * required for pool_get_aligned.
+     */
+    CLIB_CACHE_LINE_ALIGN_MARK(cacheline0);
+
     dpo_proto_t cd_proto;
 
     u32 cd_table_index;