From 72b04288d9a670829050a6ca5d931ae5b55b33ed Mon Sep 17 00:00:00 2001
From: Florin Coras <fcoras@cisco.com>
Date: Mon, 14 Jan 2019 17:23:11 -0800
Subject: vcl/session: replicate events for shared sessions

Change-Id: I7fb5402d4a530b5f2ffd9bb5787632099f4b4189
Signed-off-by: Florin Coras <fcoras@cisco.com>
---
 src/vnet/session/session_api.c | 85 ++++++++++++++++++++++++++----------------
 1 file changed, 52 insertions(+), 33 deletions(-)

(limited to 'src/vnet/session/session_api.c')

diff --git a/src/vnet/session/session_api.c b/src/vnet/session/session_api.c
index 2d20d5f697b..2decd9b8a2e 100755
--- a/src/vnet/session/session_api.c
+++ b/src/vnet/session/session_api.c
@@ -505,10 +505,10 @@ mq_send_session_accepted_cb (stream_session_t * s)
   return 0;
 }
 
-static void
-mq_send_session_disconnected_cb (stream_session_t * s)
+static inline void
+mq_send_session_close_evt (app_worker_t * app_wrk, session_handle_t sh,
+			   session_evt_type_t evt_type)
 {
-  app_worker_t *app_wrk = app_worker_get (s->app_wrk_index);
   svm_msg_q_msg_t _msg, *msg = &_msg;
   session_disconnected_msg_t *mp;
   svm_msg_q_t *app_mq;
@@ -519,53 +519,72 @@ mq_send_session_disconnected_cb (stream_session_t * s)
     return;
   evt = svm_msg_q_msg_data (app_mq, msg);
   clib_memset (evt, 0, sizeof (*evt));
-  evt->event_type = SESSION_CTRL_EVT_DISCONNECTED;
+  evt->event_type = evt_type;
   mp = (session_disconnected_msg_t *) evt->data;
-  mp->handle = session_handle (s);
+  mp->handle = sh;
   mp->context = app_wrk->api_client_index;
   svm_msg_q_add_and_unlock (app_mq, msg);
 }
 
+static inline void
+mq_notify_close_subscribers (u32 app_index, session_handle_t sh,
+			     svm_fifo_t * f, session_evt_type_t evt_type)
+{
+  app_worker_t *app_wrk;
+  application_t *app;
+  int i;
+
+  app = application_get (app_index);
+  if (!app)
+    return;
+
+  for (i = 0; i < f->n_subscribers; i++)
+    {
+      if (!(app_wrk = application_get_worker (app, f->subscribers[i])))
+	continue;
+      mq_send_session_close_evt (app_wrk, sh, SESSION_CTRL_EVT_DISCONNECTED);
+    }
+}
+
+static void
+mq_send_session_disconnected_cb (stream_session_t * s)
+{
+  app_worker_t *app_wrk = app_worker_get (s->app_wrk_index);
+  session_handle_t sh = session_handle (s);
+
+  mq_send_session_close_evt (app_wrk, session_handle (s),
+			     SESSION_CTRL_EVT_DISCONNECTED);
+
+  if (svm_fifo_n_subscribers (s->server_rx_fifo))
+    mq_notify_close_subscribers (app_wrk->app_index, sh, s->server_rx_fifo,
+				 SESSION_CTRL_EVT_DISCONNECTED);
+}
+
 void
 mq_send_local_session_disconnected_cb (u32 app_wrk_index,
 				       local_session_t * ls)
 {
   app_worker_t *app_wrk = app_worker_get (app_wrk_index);
-  svm_msg_q_msg_t _msg, *msg = &_msg;
-  session_disconnected_msg_t *mp;
-  svm_msg_q_t *app_mq;
-  session_event_t *evt;
+  session_handle_t sh = application_local_session_handle (ls);
 
-  app_mq = app_wrk->event_queue;
-  if (mq_try_lock_and_alloc_msg (app_mq, msg))
-    return;
-  evt = svm_msg_q_msg_data (app_mq, msg);
-  clib_memset (evt, 0, sizeof (*evt));
-  evt->event_type = SESSION_CTRL_EVT_DISCONNECTED;
-  mp = (session_disconnected_msg_t *) evt->data;
-  mp->handle = application_local_session_handle (ls);
-  mp->context = app_wrk->api_client_index;
-  svm_msg_q_add_and_unlock (app_mq, msg);
+  mq_send_session_close_evt (app_wrk, sh, SESSION_CTRL_EVT_DISCONNECTED);
+
+  if (svm_fifo_n_subscribers (ls->server_rx_fifo))
+    mq_notify_close_subscribers (app_wrk->app_index, sh, ls->server_rx_fifo,
+				 SESSION_CTRL_EVT_DISCONNECTED);
 }
 
 static void
 mq_send_session_reset_cb (stream_session_t * s)
 {
-  app_worker_t *app = app_worker_get (s->app_wrk_index);
-  svm_msg_q_msg_t _msg, *msg = &_msg;
-  session_reset_msg_t *mp;
-  svm_msg_q_t *app_mq;
-  session_event_t *evt;
+  app_worker_t *app_wrk = app_worker_get (s->app_wrk_index);
+  session_handle_t sh = session_handle (s);
 
-  app_mq = app->event_queue;
-  if (mq_try_lock_and_alloc_msg (app_mq, msg))
-    return;
-  evt = svm_msg_q_msg_data (app_mq, msg);
-  clib_memset (evt, 0, sizeof (*evt));
-  evt->event_type = SESSION_CTRL_EVT_RESET;
-  mp = (session_reset_msg_t *) evt->data;
-  mp->handle = session_handle (s);
-  svm_msg_q_add_and_unlock (app_mq, msg);
+  mq_send_session_close_evt (app_wrk, sh, SESSION_CTRL_EVT_RESET);
+
+  if (svm_fifo_n_subscribers (s->server_rx_fifo))
+    mq_notify_close_subscribers (app_wrk->app_index, sh, s->server_rx_fifo,
+				 SESSION_CTRL_EVT_RESET);
 }
 
 static int
-- 
cgit 1.2.3-korg