1 files changed, 91 insertions, 0 deletions
diff --git a/src/plugins/http/http_timer.h b/src/plugins/http/http_timer.h
new file mode 100644
index 00000000000..eec5a4595fe
--- /dev/null
+++ b/src/plugins/http/http_timer.h
@@ -0,0 +1,91 @@
+/*
+ * Copyright (c) 2022 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef SRC_PLUGINS_HTTP_HTTP_TIMER_H_
+#define SRC_PLUGINS_HTTP_HTTP_TIMER_H_
+
+#include <http/http.h>
+#include <vppinfra/tw_timer_2t_1w_2048sl.h>
+
+#define HTTP_CONN_TIMEOUT 60
+
+typedef void (http_conn_timeout_fn) (void *);
+
+typedef struct http_tw_ctx_
+{
+  tw_timer_wheel_2t_1w_2048sl_t tw;
+  clib_spinlock_t tw_lock;
+  http_conn_timeout_fn *cb_fn;
+} http_tw_ctx_t;
+
+extern http_tw_ctx_t http_tw_ctx;
+
+void http_timers_init (vlib_main_t *vm, http_conn_timeout_fn *cb_fn);
+
+static inline void
+http_conn_timer_start (http_conn_t *hc)
+{
+  http_tw_ctx_t *twc = &http_tw_ctx;
+  u32 hs_handle;
+  u64 timeout;
+
+  timeout = HTTP_CONN_TIMEOUT;
+  hs_handle = hc->c_thread_index << 24 | hc->c_c_index;
+
+  clib_spinlock_lock (&twc->tw_lock);
+  hc->timer_handle =
+    tw_timer_start_2t_1w_2048sl (&twc->tw, hs_handle, 0, timeout);
+  clib_spinlock_unlock (&twc->tw_lock);
+}
+
+static inline void
+http_conn_timer_stop (http_conn_t *hc)
+{
+  http_tw_ctx_t *twc = &http_tw_ctx;
+
+  if (hc->timer_handle == ~0)
+    return;
+
+  clib_spinlock_lock (&twc->tw_lock);
+  tw_timer_stop_2t_1w_2048sl (&twc->tw, hc->timer_handle);
+  hc->timer_handle = ~0;
+  clib_spinlock_unlock (&twc->tw_lock);
+}
+
+static inline void
+http_conn_timer_update (http_conn_t *hc)
+{
+  http_tw_ctx_t *twc = &http_tw_ctx;
+  u64 timeout;
+
+  if (hc->timer_handle == ~0)
+    return;
+
+  timeout = HTTP_CONN_TIMEOUT;
+
+  clib_spinlock_lock (&twc->tw_lock);
+  tw_timer_update_2t_1w_2048sl (&twc->tw, hc->timer_handle, timeout);
+  clib_spinlock_unlock (&twc->tw_lock);
+}
+
+#endif /* SRC_PLUGINS_HTTP_HTTP_TIMER_H_ */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */