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PRR: use accurate rfc6675_pipe when enabled

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Reviewed By: #transport, tuexen
MFC after:   2 weeks
Sponsored by:        NetApp, Inc.
Differential Revision: https://reviews.freebsd.org/D28816
This commit is contained in:
Richard Scheffenegger 2021-02-20 20:10:00 +01:00
parent f17f94cd1b
commit a8e431e153
1 changed files with 9 additions and 3 deletions
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12
sys/netinet/tcp_input.c
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@ -2579,8 +2579,11 @@ tcp_do_segment(struct mbuf *m, struct tcphdr *th, struct socket *so,
* estimate to be in the network.
*/
del_data = tp->sackhint.delivered_data;
pipe = (tp->snd_nxt - tp->snd_fack) +
tp->sackhint.sack_bytes_rexmit;
if (V_tcp_do_rfc6675_pipe)
pipe = tcp_compute_pipe(tp);
else
pipe = (tp->snd_nxt - tp->snd_fack) +
tp->sackhint.sack_bytes_rexmit;
tp->sackhint.prr_delivered += del_data;
if (pipe > tp->snd_ssthresh) {
if (tp->sackhint.recover_fs == 0)
@ -3960,7 +3963,10 @@ tcp_prr_partialack(struct tcpcb *tp, struct tcphdr *th)
if (SEQ_GEQ(th->th_ack, tp->snd_una))
del_data = BYTES_THIS_ACK(tp, th);
del_data += tp->sackhint.delivered_data;
pipe = (tp->snd_nxt - tp->snd_fack) + tp->sackhint.sack_bytes_rexmit;
if (V_tcp_do_rfc6675_pipe)
pipe = tcp_compute_pipe(tp);
else
pipe = (tp->snd_nxt - tp->snd_fack) + tp->sackhint.sack_bytes_rexmit;
tp->sackhint.prr_delivered += del_data;
/*
* Proportional Rate Reduction