vnet_classify: Handle non-aligned vectors and various bugfixes

classifier used to crash when packet data was not aligned.
This commit also includes:
- writer lock initialization bugfix
- CLI help was missing opaque-index
- ip_input_acl was applying the mask on buffer->data instead of packet head

On a side note, my tests failed to show any improvements
when using SSE. Further tests might be interesting to see if they
actually perform better.

Change-Id: Ic34eecd6a2226919121ffce2fe4324506deee52f
Signed-off-by: Pierre Pfister <ppfister@cisco.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/vnet/vnet/classify/vnet_classify.c b/vnet/vnet/classify/vnet_classify.c
index 43acb024033..7f7138af2af 100644
--- a/vnet/vnet/classify/vnet_classify.c
+++ b/vnet/vnet/classify/vnet_classify.c
@@ -95,6 +95,7 @@ vnet_classify_new_table (vnet_classify_main_t *cm,
 
   t->writer_lock = clib_mem_alloc_aligned (CLIB_CACHE_LINE_BYTES, 
                                            CLIB_CACHE_LINE_BYTES);
+  t->writer_lock[0] = 0;
 
   clib_mem_set_heap (oldheap);
   return (t);
@@ -1735,7 +1736,7 @@ VLIB_CLI_COMMAND (classify_session_command, static) = {
     .path = "classify session",
     .short_help = 
     "classify session [hit-next|l2-hit-next|acl-hit-next <next_index>]"
-    "\n table-index <nn> match [hex] [l2] [l3 ip4]",
+    "\n table-index <nn> match [hex] [l2] [l3 ip4] [opaque-index <index>]",
     .function = classify_session_command_fn,
 };