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/*
* 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:
*/
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