+/*
+ * Socket api functions
+ */
+
+static int
+mq_send_add_segment_sapi_cb (u32 app_wrk_index, u64 segment_handle)
+{
+ session_app_add_segment_msg_t m = { 0 };
+ app_worker_t *app_wrk;
+ fifo_segment_t *fs;
+ ssvm_private_t *sp;
+ u8 fd_flags = 0;
+
+ 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;
+
+ m.segment_size = sp->ssvm_size;
+ m.fd_flags = fd_flags;
+ m.segment_handle = segment_handle;
+ strncpy ((char *) m.segment_name, (char *) sp->name,
+ sizeof (m.segment_name) - 1);
+
+ app_wrk_send_ctrl_evt_fd (app_wrk, SESSION_CTRL_EVT_APP_ADD_SEGMENT, &m,
+ sizeof (m), sp->fd);
+
+ return 0;
+}
+
+static int
+mq_send_del_segment_sapi_cb (u32 app_wrk_index, u64 segment_handle)
+{
+ session_app_del_segment_msg_t m = { 0 };
+ app_worker_t *app_wrk;
+
+ app_wrk = app_worker_get (app_wrk_index);
+
+ m.segment_handle = segment_handle;
+
+ app_wrk_send_ctrl_evt (app_wrk, SESSION_CTRL_EVT_APP_DEL_SEGMENT, &m,
+ sizeof (m));
+
+ 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,
+ .session_listened_callback = mq_send_session_bound_cb,
+ .session_unlistened_callback = mq_send_unlisten_cb,
+ .add_segment_callback = mq_send_add_segment_sapi_cb,
+ .del_segment_callback = mq_send_del_segment_sapi_cb,
+ .builtin_app_rx_callback = mq_send_io_rx_event,
+ .builtin_app_tx_callback = mq_send_io_tx_event,
+};
+
+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)))
+ {
+ clib_warning ("attach returned: %d", rv);
+ goto done;
+ }
+
+ n_workers = vlib_num_workers ();
+ vec_validate (fds, 3 /* segs + tx evtfd */ + n_workers);
+
+ /* Send event queues segment */
+ app = application_get (a->app_index);
+ rx_mqs_seg = application_get_rx_mqs_segment (app);
+
+ fd_flags |= SESSION_FD_F_VPP_MQ_SEGMENT;
+ fds[n_fds] = rx_mqs_seg->ssvm.fd;
+ n_fds += 1;
+
+ /* Send fifo segment fd if needed */
+ if (ssvm_type (a->segment) == SSVM_SEGMENT_MEMFD)
+ {
+ fd_flags |= SESSION_FD_F_MEMFD_SEGMENT;
+ fds[n_fds] = a->segment->fd;
+ n_fds += 1;
+ }
+ if (a->options[APP_OPTIONS_FLAGS] & APP_OPTIONS_FLAGS_EVT_MQ_USE_EVENTFD)
+ {
+ fd_flags |= SESSION_FD_F_MQ_EVENTFD;
+ fds[n_fds] = svm_msg_q_get_eventfd (a->app_evt_q);
+ n_fds += 1;
+ }
+
+ if (application_use_private_rx_mqs ())
+ {
+ fd_flags |= SESSION_FD_F_VPP_MQ_EVENTFD;
+ for (i = 0; i < n_workers + 1; i++)
+ {
+ rx_mq = application_rx_mq_get (app, i);
+ fds[n_fds] = svm_msg_q_get_eventfd (rx_mq);
+ n_fds += 1;
+ }
+ }
+
+done:
+
+ msg.type = APP_SAPI_MSG_TYPE_ATTACH_REPLY;
+ rmp = &msg.attach_reply;
+ rmp->retval = rv;
+ if (!rv)
+ {
+ ctrl_thread = n_workers ? 1 : 0;
+ rmp->app_index = a->app_index;
+ rmp->app_mq =
+ fifo_segment_msg_q_offset ((fifo_segment_t *) a->segment, 0);
+ rmp->vpp_ctrl_mq = fifo_segment_msg_q_offset (rx_mqs_seg, ctrl_thread);
+ rmp->vpp_ctrl_mq_thread = ctrl_thread;
+ rmp->n_fds = n_fds;
+ rmp->fd_flags = fd_flags;
+ /* No segment name and size since we only support memfds
+ * in this configuration */
+ rmp->segment_handle = a->segment_handle;
+ rmp->api_client_handle = a->api_client_index;
+
+ /* Update app index for socket */
+ handle = (app_ns_api_handle_t *) & cs->private_data;
+ app_wrk = application_get_worker (app, 0);
+ handle->aah_app_wrk_index = app_wrk->wrk_index;
+ }
+
+ clib_socket_sendmsg (cs, &msg, sizeof (msg), fds, n_fds);
+ vec_free (a->name);
+ vec_free (fds);
+}
+
+void
+sapi_socket_close_w_handle (u32 api_handle)
+{
+ app_namespace_t *app_ns = app_namespace_get (api_handle >> 16);
+ u16 sock_index = api_handle & 0xffff;
+ app_ns_api_handle_t *handle;
+ clib_socket_t *cs;
+ clib_file_t *cf;
+
+ cs = appns_sapi_get_socket (app_ns, sock_index);
+ if (!cs)
+ return;
+
+ handle = (app_ns_api_handle_t *) & cs->private_data;
+ cf = clib_file_get (&file_main, handle->aah_file_index);
+ clib_file_del (&file_main, cf);
+
+ clib_socket_close (cs);
+ appns_sapi_free_socket (app_ns, cs);
+}