Add support for capturing packets on packet generator interfaces

This patch introduces following changes:
 - 4 predefined pg/stream[0-3] interfaces are removed
 - Interface naming is changed form pg/streamX to pgX where X can be
   any u32 value
 - one pgX interface can handle multiple streams
 - keyword "source pgX" is added to "packet-generator add" command, X is 0
   by default
 - new cli "packet-generator capture" is introduced
 - new cli "create packet-generator interface pgX"

Change-Id: I768d075b9d4a34f0b5073debdc5dd4a0880c682c
Signed-off-by: Damjan Marion <damarion@cisco.com>

1 files changed, 1 insertions, 15 deletions

diff --git a/vnet/vnet/pg/init.c b/vnet/vnet/pg/init.c
index f598050c28d..5cbb6db09b2 100644
--- a/vnet/vnet/pg/init.c
+++ b/vnet/vnet/pg/init.c
@@ -47,9 +47,9 @@ static clib_error_t * pg_init (vlib_main_t * vm)
 {
   clib_error_t * error;
   pg_main_t * pg = &pg_main;
-  int i, j;
 
   pg->vlib_main = vm;
+  pg->if_index_by_if_id = hash_create (0, sizeof (uword));
 
   if ((error = vlib_call_init_function (vm, vnet_main_init)))
     goto done;
@@ -57,20 +57,6 @@ static clib_error_t * pg_init (vlib_main_t * vm)
   if ((error = vlib_call_init_function (vm, pg_cli_init)))
     goto done;
 
-  /* Create/free interfaces so that they exist and can be
-     used as a destination interface for streams.  Also, create
-     a fixed number of pg interfaces so that interface numbering can
-     be made to be deterministic (at least if <= 4 streams are ever used). */
-  for (i = 0; i < 4; i++)
-    {
-      j = pg_interface_find_free (pg, i);
-      ASSERT (j == i);
-    }
-
-  /* Free interfaces. */
-  for (i = j; i >= 0; i--)
-    vec_add1 (pg->free_interfaces, i);
-
  done:
   return error;
 }