1 files changed, 111 insertions, 0 deletions
diff --git a/src/vnet/tcp/tcp_cc.h b/src/vnet/tcp/tcp_cc.h
new file mode 100644
index 00000000000..54d2dc6334b
--- /dev/null
+++ b/src/vnet/tcp/tcp_cc.h
@@ -0,0 +1,111 @@
+/*
+ * Copyright (c) 2020 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_VNET_TCP_TCP_CC_H_
+#define SRC_VNET_TCP_TCP_CC_H_
+
+#include <vnet/tcp/tcp_types.h>
+
+always_inline void
+tcp_cc_rcv_ack (tcp_connection_t * tc, tcp_rate_sample_t * rs)
+{
+  tc->cc_algo->rcv_ack (tc, rs);
+  tc->tsecr_last_ack = tc->rcv_opts.tsecr;
+}
+
+static inline void
+tcp_cc_rcv_cong_ack (tcp_connection_t * tc, tcp_cc_ack_t ack_type,
+		     tcp_rate_sample_t * rs)
+{
+  tc->cc_algo->rcv_cong_ack (tc, ack_type, rs);
+}
+
+static inline void
+tcp_cc_congestion (tcp_connection_t * tc)
+{
+  tc->cc_algo->congestion (tc);
+}
+
+static inline void
+tcp_cc_loss (tcp_connection_t * tc)
+{
+  tc->cc_algo->loss (tc);
+}
+
+static inline void
+tcp_cc_recovered (tcp_connection_t * tc)
+{
+  tc->cc_algo->recovered (tc);
+}
+
+static inline void
+tcp_cc_undo_recovery (tcp_connection_t * tc)
+{
+  if (tc->cc_algo->undo_recovery)
+    tc->cc_algo->undo_recovery (tc);
+}
+
+static inline void
+tcp_cc_event (tcp_connection_t * tc, tcp_cc_event_t evt)
+{
+  if (tc->cc_algo->event)
+    tc->cc_algo->event (tc, evt);
+}
+
+static inline u64
+tcp_cc_get_pacing_rate (tcp_connection_t * tc)
+{
+  if (tc->cc_algo->get_pacing_rate)
+    return tc->cc_algo->get_pacing_rate (tc);
+
+  f64 srtt = clib_min ((f64) tc->srtt * TCP_TICK, tc->mrtt_us);
+
+  /* TODO should constrain to interface's max throughput but
+   * we don't have link speeds for sw ifs ..*/
+  return ((f64) tc->cwnd / srtt);
+}
+
+static inline void *
+tcp_cc_data (tcp_connection_t * tc)
+{
+  return (void *) tc->cc_data;
+}
+
+/**
+ * Register exiting cc algo type
+ */
+void tcp_cc_algo_register (tcp_cc_algorithm_type_e type,
+			   const tcp_cc_algorithm_t * vft);
+
+/**
+ * Register new cc algo type
+ */
+tcp_cc_algorithm_type_e tcp_cc_algo_new_type (const tcp_cc_algorithm_t * vft);
+tcp_cc_algorithm_t *tcp_cc_algo_get (tcp_cc_algorithm_type_e type);
+
+
+void newreno_rcv_cong_ack (tcp_connection_t * tc, tcp_cc_ack_t ack_type,
+			   tcp_rate_sample_t * rs);
+
+
+#endif /* SRC_VNET_TCP_TCP_CC_H_ */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */