+ app_wrk = app_worker_get (app_wrk_index);
+
+ fs = segment_manager_get_segment_w_handle (segment_handle);
+ sp = &fs->ssvm;
+ ASSERT (ssvm_type (sp) == SSVM_SEGMENT_MEMFD);
+
+ fd_flags |= SESSION_FD_F_MEMFD_SEGMENT;
+ fds[n_fds] = sp->fd;
+ n_fds += 1;
+
+ app_mq = app_wrk->event_queue;
+ if (mq_try_lock_and_alloc_msg (app_mq, msg))
+ return -1;
+
+ /*
+ * Send the fd over api socket
+ */
+ sapi_send_fds (app_wrk, fds, n_fds);
+
+ /*
+ * Send the actual message over mq
+ */
+ evt = svm_msg_q_msg_data (app_mq, msg);
+ clib_memset (evt, 0, sizeof (*evt));
+ evt->event_type = SESSION_CTRL_EVT_APP_ADD_SEGMENT;
+ mp = (session_app_add_segment_msg_t *) evt->data;
+ clib_memset (mp, 0, sizeof (*mp));
+ mp->segment_size = sp->ssvm_size;
+ mp->fd_flags = fd_flags;
+ mp->segment_handle = segment_handle;
+ strncpy ((char *) mp->segment_name, (char *) sp->name,
+ sizeof (mp->segment_name) - 1);
+
+ svm_msg_q_add_and_unlock (app_mq, msg);
+
+ return 0;
+}
+
+static int
+mq_send_del_segment_sapi_cb (u32 app_wrk_index, u64 segment_handle)
+{
+ svm_msg_q_msg_t _msg, *msg = &_msg;
+ session_app_del_segment_msg_t *mp;
+ app_worker_t *app_wrk;
+ session_event_t *evt;
+ svm_msg_q_t *app_mq;
+
+ app_wrk = app_worker_get (app_wrk_index);
+
+ app_mq = app_wrk->event_queue;
+ if (mq_try_lock_and_alloc_msg (app_mq, msg))
+ return -1;
+
+ evt = svm_msg_q_msg_data (app_mq, msg);
+ clib_memset (evt, 0, sizeof (*evt));
+ evt->event_type = SESSION_CTRL_EVT_APP_DEL_SEGMENT;
+ mp = (session_app_del_segment_msg_t *) evt->data;
+ clib_memset (mp, 0, sizeof (*mp));
+ mp->segment_handle = segment_handle;
+ svm_msg_q_add_and_unlock (app_mq, msg);
+
+ return 0;
+}
+
+static session_cb_vft_t session_mq_sapi_cb_vft = {
+ .session_accept_callback = mq_send_session_accepted_cb,
+ .session_disconnect_callback = mq_send_session_disconnected_cb,
+ .session_connected_callback = mq_send_session_connected_cb,
+ .session_reset_callback = mq_send_session_reset_cb,
+ .session_migrate_callback = mq_send_session_migrate_cb,
+ .session_cleanup_callback = mq_send_session_cleanup_cb,
+ .add_segment_callback = mq_send_add_segment_sapi_cb,
+ .del_segment_callback = mq_send_del_segment_sapi_cb,
+};
+
+static void
+session_api_attach_handler (app_namespace_t * app_ns, clib_socket_t * cs,
+ app_sapi_attach_msg_t * mp)
+{
+ int rv = 0, *fds = 0, n_fds = 0, i, n_workers;
+ vnet_app_attach_args_t _a, *a = &_a;
+ app_sapi_attach_reply_msg_t *rmp;
+ u8 fd_flags = 0, ctrl_thread;
+ app_ns_api_handle_t *handle;
+ fifo_segment_t *rx_mqs_seg;
+ app_sapi_msg_t msg = { 0 };
+ app_worker_t *app_wrk;
+ application_t *app;
+ svm_msg_q_t *rx_mq;
+
+ /* Make sure name is null terminated */
+ mp->name[63] = 0;
+
+ clib_memset (a, 0, sizeof (*a));
+ a->api_client_index = appns_sapi_socket_handle (app_ns, cs);
+ a->name = format (0, "%s", (char *) mp->name);
+ a->options = mp->options;
+ a->session_cb_vft = &session_mq_sapi_cb_vft;
+ a->use_sock_api = 1;
+ a->options[APP_OPTIONS_NAMESPACE] = app_namespace_index (app_ns);
+
+ if ((rv = vnet_application_attach (a)))