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Fix BBR2

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This commit is contained in:
Ycarus (Yannick Chabanois) 2023-07-31 21:31:52 +02:00
parent df621dfa81
commit 6201898fa8
1 changed files with 9 additions and 6 deletions
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15
6.1/target/linux/generic/hack-6.1/999-BBRv2.patch
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@ -1224,7 +1224,7 @@ new file mode 100644
index 000000000000..a6959b70e51d
--- /dev/null
+++ b/net/ipv4/tcp_bbr2.c
@@ -0,0 +1,2683 @@
@@ -0,0 +1,2686 @@
+/* BBR (Bottleneck Bandwidth and RTT) congestion control, v2
+ *
+ * BBRv2 is a model-based congestion control algorithm that aims for low
@ -1717,18 +1717,19 @@ index 000000000000..a6959b70e51d
+ return bbr_rate_bytes_per_sec(sk, rate, BBR_UNIT, 0);
+}
+
+static u64 bbr_rate_kbps(struct sock *sk, u64 rate)
+/*static u64 bbr_rate_kbps(struct sock *sk, u64 rate)
+{
+ rate = bbr_bw_bytes_per_sec(sk, rate);
+ rate *= 8;
+ do_div(rate, 1000);
+ return rate;
+}
+}*/
+
+static u32 bbr_tso_segs_goal(struct sock *sk);
+static void bbr_debug(struct sock *sk, u32 acked,
+ const struct rate_sample *rs, struct bbr_context *ctx)
+{
+#if 0
+ static const char ca_states[] = {
+ [TCP_CA_Open] = 'O',
+ [TCP_CA_Disorder] = 'D',
@ -1749,10 +1750,11 @@ index 000000000000..a6959b70e51d
+ 'F', /* BBR_ACKS_PROBE_FEEDBACK - 'Feedback' */
+ 'A', /* BBR_ACKS_PROBE_STOPPING - 'After' */
+ };
+#endif
+ struct tcp_sock *tp = tcp_sk(sk);
+ struct bbr *bbr = inet_csk_ca(sk);
+ const u32 una = tp->snd_una - bbr->debug.snd_isn;
+ const u32 fack = tcp_highest_sack_seq(tp);
+ //const u32 fack = tcp_highest_sack_seq(tp);
+ const u16 dport = ntohs(inet_sk(sk)->inet_dport);
+ bool is_port_match = (bbr_debug_port_mask &&
+ ((dport & bbr_debug_port_mask) == 0));
@ -1798,7 +1800,7 @@ index 000000000000..a6959b70e51d
+ if (ipv4_is_loopback(inet_sk(sk)->inet_daddr) &&
+ !(bbr_flags & FLAG_DEBUG_LOOPBACK))
+ return;
+
+#if 0
+ snprintf(debugmsg, sizeof(debugmsg) - 1,
+ "BBR %pI4:%-5u %5u,%03u:%-7u %c "
+ "%c %2u br %2u cr %2d rtt %5ld d %2d i %5ld mrtt %d %cbw %llu "
@ -1850,6 +1852,7 @@ index 000000000000..a6959b70e51d
+ bbr->cycle_idx,
+ ack_phase[bbr->ack_phase],
+ bbr->bw_probe_samples ? "Y" : "N");
+#endif
+ debugmsg[sizeof(debugmsg) - 1] = 0;
+
+ /* printk takes a higher precedence. */
@ -1916,7 +1919,7 @@ index 000000000000..a6959b70e51d
+{
+ struct bbr *bbr = inet_csk_ca(sk);
+ u32 segs, r;
+ u64 bytes;
+ u32 bytes;
+
+ /* Budget a TSO/GSO burst size allowance based on bw (pacing_rate). */
+ bytes = sk->sk_pacing_rate >> sk->sk_pacing_shift;