session: add session debug cli

- add session debug cli to enable fine control of which event logs
are enable/disable with below syntax
  session debug {show | group <list> level <n>}
  list may be entered with a dash, "0-4"
  or it may be entered with a comma, "0,1,4"
- fix compilation errors when SESSION_EVT is enable
- change SESSION_EVT_FREE_HANDLER to use DEC_SESSION_ED instead of
DEC_SESSION_ETD because the transport may already be free when the
handler is called

Type: improvement

Signed-off-by: Steven Luong <sluong@cisco.com>
Change-Id: Iab2989e0a847bb59002ef16494eebcc1d112b2ae

1 files changed, 2 insertions, 2 deletions

diff --git a/src/vnet/session/session_node.c b/src/vnet/session/session_node.c
index 1908a58f08f..c29e0590aa8 100644
--- a/src/vnet/session/session_node.c
+++ b/src/vnet/session/session_node.c
@@ -1552,7 +1552,7 @@ session_tx_fifo_read_and_snd_i (session_worker_t * wrk,
   *n_tx_packets += ctx->n_segs_per_evt;
 
   SESSION_EVT (SESSION_EVT_DEQ, ctx->s, ctx->max_len_to_snd, ctx->max_dequeue,
-	       ctx->s->tx_fifo->has_event, wrk->last_vlib_time);
+	       ctx->s->tx_fifo->shr->has_event, wrk->last_vlib_time);
 
   ASSERT (ctx->left_to_snd == 0);
 
@@ -1790,7 +1790,7 @@ session_event_dispatch_io (session_worker_t * wrk, vlib_node_runtime_t * node,
       clib_warning ("unhandled event type %d", e->event_type);
     }
 
-  SESSION_EVT (SESSION_IO_EVT_COUNTS, e->event_type, 1, wrk);
+  SESSION_EVT (SESSION_EVT_IO_EVT_COUNTS, e->event_type, 1, wrk);
 
   /* Regrab elements in case pool moved */
   elt = clib_llist_elt (wrk->event_elts, ei);