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Update BBRv2 alpha

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Ycarus (Yannick Chabanois) 2021-02-03 10:59:54 +01:00
parent 2f4b3c3f92
commit 4c596b6312
1 changed files with 3 additions and 6 deletions
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9
root/target/linux/generic/hack-5.4/693-tcp_bbr2.patch
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@ -393,7 +393,7 @@ new file mode 100644
index 000000000000..875ebfef5a03
--- /dev/null
+++ b/net/ipv4/tcp_bbr2.c
@@ -0,0 +1,2674 @@
@@ -0,0 +1,2671 @@
+/* BBR (Bottleneck Bandwidth and RTT) congestion control, v2
+ *
+ * BBRv2 is a model-based congestion control algorithm that aims for low
@ -3013,15 +3013,12 @@ index 000000000000..875ebfef5a03
+ /* bbr_adapt_lower_bounds() needs cwnd before
+ * we suffered an RTO, to update inflight_lo:
+ */
+ WARN_ON_ONCE(bbr->prior_cwnd == 0);
+ WARN_ON_ONCE(bbr->prior_cwnd == ~0U);
+ bbr->inflight_lo = bbr->prior_cwnd;
+ bbr->inflight_lo =
+ max(tp->snd_cwnd, bbr->prior_cwnd);
+ }
+ bbr_debug(sk, 0, &rs, &ctx);
+ } else if (bbr->prev_ca_state == TCP_CA_Loss &&
+ new_state != TCP_CA_Loss) {
+ WARN_ON_ONCE(bbr->prior_cwnd == 0);
+ WARN_ON_ONCE(bbr->prior_cwnd == ~0U);
+ tp->snd_cwnd = max(tp->snd_cwnd, bbr->prior_cwnd);
+ bbr->try_fast_path = 0; /* bound cwnd using latest model */
+ }