+ vls_worker_free (wrk);
+}
+
+static void
+vls_clone_and_share_rpc_handler (void *args)
+{
+ vls_clone_and_share_msg_t *msg = (vls_clone_and_share_msg_t *) args;
+ vls_worker_t *wrk = vls_worker_get_current (), *dst_wrk;
+ vcl_locked_session_t *vls, *dst_vls;
+ vcl_worker_t *vcl_wrk = vcl_worker_get_current (), *dst_vcl_wrk;
+ vcl_session_t *s, *dst_s;
+
+ VDBG (1, "process session clone of worker (session): %u (%u) -> %u (%u)",
+ vcl_wrk->wrk_index, msg->session_index, msg->origin_vcl_wrk,
+ msg->origin_session_index);
+
+ /* VCL locked session can't been protected, so DONT touch it.
+ * VCL session may been free, check it.
+ */
+ dst_vcl_wrk = vcl_worker_get (msg->origin_vcl_wrk);
+ s = vcl_session_get (vcl_wrk, msg->session_index);
+ if (PREDICT_FALSE (!s))
+ {
+ dst_vcl_wrk->rpc_done = VLS_RPC_STATE_SESSION_NOT_EXIST;
+ return;
+ }
+
+ if (!vls_mt_wrk_supported ())
+ {
+ vls = vls_session_get (wrk, msg->vls_index);
+ vls_init_share_session (wrk, vls);
+ dst_wrk = vls_worker_get (msg->origin_vls_wrk);
+ dst_vls = vls_session_get (dst_wrk, msg->origin_vls_index);
+ dst_vls->shared_data_index = vls->shared_data_index;
+ }
+ dst_s = vcl_session_get (dst_vcl_wrk, msg->origin_session_index);
+ clib_memcpy (dst_s, s, sizeof (*s));
+
+ dst_vcl_wrk->rpc_done = VLS_RPC_STATE_SUCCESS;
+}
+
+static void
+vls_session_cleanup_rpc_handler (void *args)
+{
+ vls_sess_cleanup_msg_t *msg = (vls_sess_cleanup_msg_t *) args;
+ vcl_worker_t *wrk = vcl_worker_get_current ();
+ vls_worker_t *vls_wrk = vls_worker_get_current ();
+ vcl_session_handle_t sh = vcl_session_handle_from_index (msg->session_index);
+
+ VDBG (1, "process session cleanup of worker (session): %u (%u) from %u ()",
+ wrk->wrk_index, msg->session_index, msg->origin_vcl_wrk);
+
+ vppcom_session_close (sh);
+ vls_sh_to_vlsh_table_del (vls_wrk, sh);
+}
+
+static void
+vls_rpc_handler (void *args)
+{
+ vls_rpc_msg_t *msg = (vls_rpc_msg_t *) args;
+ switch (msg->type)
+ {
+ case VLS_RPC_CLONE_AND_SHARE:
+ vls_clone_and_share_rpc_handler (msg->data);
+ break;
+ case VLS_RPC_SESS_CLEANUP:
+ vls_session_cleanup_rpc_handler (msg->data);
+ break;
+ default:
+ break;
+ }
+}
+
+void
+vls_send_clone_and_share_rpc (vcl_worker_t *wrk, u32 origin_vls_index,
+ u32 session_index, u32 vls_wrk_index,
+ u32 dst_wrk_index, u32 dst_vls_index,
+ u32 dst_session_index)
+{
+ u8 data[sizeof (u8) + sizeof (vls_clone_and_share_msg_t)];
+ vls_clone_and_share_msg_t *msg;
+ vls_rpc_msg_t *rpc;
+ int ret;
+ f64 timeout = clib_time_now (&wrk->clib_time) + VLS_WORKER_RPC_TIMEOUT;
+
+ rpc = (vls_rpc_msg_t *) & data;
+ rpc->type = VLS_RPC_CLONE_AND_SHARE;
+ msg = (vls_clone_and_share_msg_t *) & rpc->data;
+ msg->origin_vls_wrk = vls_wrk_index;
+ msg->origin_vls_index = origin_vls_index;
+ msg->origin_vcl_wrk = wrk->wrk_index;
+ msg->origin_session_index = session_index;
+ msg->vls_index = dst_vls_index;
+ msg->session_index = dst_session_index;
+
+ /* Try lock and handle rpcs if two threads send each other
+ * clone requests at the same time.
+ */
+ wrk->rpc_done = VLS_RPC_STATE_INIT;
+ while (!clib_spinlock_trylock (&vlsm->worker_rpc_lock))
+ vcl_flush_mq_events ();
+ ret = vcl_send_worker_rpc (dst_wrk_index, rpc, sizeof (data));
+
+ VDBG (1, "send session clone to wrk (session): %u (%u) -> %u (%u), ret=%d",
+ dst_wrk_index, msg->session_index, msg->origin_vcl_wrk,
+ msg->origin_session_index, ret);
+ while (!ret && wrk->rpc_done == VLS_RPC_STATE_INIT &&
+ clib_time_now (&wrk->clib_time) < timeout)
+ ;
+ clib_spinlock_unlock (&vlsm->worker_rpc_lock);
+}
+
+void
+vls_send_session_cleanup_rpc (vcl_worker_t * wrk,
+ u32 dst_wrk_index, u32 dst_session_index)
+{
+ u8 data[sizeof (u8) + sizeof (vls_sess_cleanup_msg_t)];
+ vls_sess_cleanup_msg_t *msg;
+ vls_rpc_msg_t *rpc;
+ int ret;
+
+ rpc = (vls_rpc_msg_t *) & data;
+ rpc->type = VLS_RPC_SESS_CLEANUP;
+ msg = (vls_sess_cleanup_msg_t *) & rpc->data;
+ msg->origin_vcl_wrk = wrk->wrk_index;
+ msg->session_index = dst_session_index;
+
+ ret = vcl_send_worker_rpc (dst_wrk_index, rpc, sizeof (data));
+
+ VDBG (1, "send session cleanup to wrk (session): %u (%u) from %u, ret=%d",
+ dst_wrk_index, msg->session_index, msg->origin_vcl_wrk, ret);