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1302 commits

Author SHA1 Message Date
David Goulet
331204e100 Revert "cmux: Don't pick a marked for close circuit as active" 
This reverts commit 4f1298e418.
 2022-06-23 10:55:56 -04:00
David Goulet
4f1298e418 cmux: Don't pick a marked for close circuit as active 
Fixes #25312

Signed-off-by: David Goulet <dgoulet@torproject.org>
 2022-06-23 09:44:25 -04:00
David Goulet
7fc474bd3f Merge branch 'maint-0.4.7' 2022-06-17 09:13:31 -04:00
Mike Perry
b0496d4019 Fix for RTT calculation hang during congestion control. 
Only cache RTT on explicit stalls; Only use this cache for the
RTT decrease case. Otherwise use only local circuit RTT state for clock jump
checks.
 2022-06-17 08:56:54 -04:00
David Goulet
1d6470a2a8 Merge branch 'maint-0.4.7' 2022-06-15 12:25:46 -04:00
Mike Perry
84e31c00da Demote "Unexpected path length" log to info. 
You win Maze; we surrender.
 2022-06-15 14:42:37 +00:00
Mike Perry
e41b680f50 Demote a warning about finding hops in path if no dir info. 
Leave it at notice if we do have enough dir info.
 2022-06-15 14:13:09 +00:00
David Goulet
b733f9d6ac Merge branch 'maint-0.4.7' 2022-06-02 16:11:04 -04:00
Mike Perry
9769b77c9b Demote log message to info. 
This log is harmless, and can be common at relays if clients are sending XOFF.
 2022-06-02 18:48:14 +00:00
Alex Xu (Hello71)
87b2ce6f84 Trigger OOS on bind failures (fixes #40597) 2022-05-21 21:30:06 -04:00
David Goulet
0f7a1f0351 Merge branch 'tor-gitlab/mr/561' 2022-05-16 08:45:15 -04:00
Mike Perry
ed3399ab06 Bug 40598: Demote warn log about odd path lengths with congestion control. 2022-04-26 12:14:26 -04:00
Alex Xu (Hello71)
15e95c3bda Use tor_event_free instead of event_del+tor_free 
Using tor_free is wrong; event_free must be called for objects obtained from
event_new. Additionally, this slightly simplifies the code.

Also, add a static_assert to prevent further instances.
 2022-04-20 00:14:25 -04:00
David Goulet
f64a88e72d Merge branch 'tor-gitlab/mr/490' 2022-03-16 13:35:33 -04:00
Mike Perry
f6f7c4e846 Emit control port notification for XON/XOFF 2022-03-14 15:16:26 -04:00
Mike Perry
c7c2287d07 Make a check for origin circuit explicit. 2022-03-03 20:55:46 +00:00
Mike Perry
7cb050bd7d Ensure CIRC_BW event is emitted immediately upon slow start exit. 
This ensures sbws gets this information quickly, so it can begin measurement.
 2022-03-03 20:55:46 +00:00
Mike Perry
646a1d5f9a Add congestion control fields to CIRC_BW control port event 2022-03-03 20:06:38 +00:00
Dimitris Apostolou
2905e7667e
Fix typos 2022-02-25 11:41:34 +02:00
David Goulet
45416356ed Merge branch 'tor-gitlab/mr/488' 2022-02-23 15:21:40 -05:00
David Goulet
d09e58d9bf cc: Fix memleak when building extension response 
Fixes #40575

Signed-off-by: David Goulet <dgoulet@torproject.org>
 2022-02-23 14:40:04 -05:00
Mike Perry
5c88bea84c Add test for circuit_sendme_cell_is_next() when sendme_inc is 100. 
This ensures compatibility with old tor.
 2022-02-22 19:28:36 +00:00
Mike Perry
a956b20c1d Add a delta parameter to Vegas. 
This allows us to cap the queue use during steady state. In shadow, this
reduced instances of long circuit queues at relays.
 2022-02-22 19:28:35 +00:00
Mike Perry
3a3f111b23 Exit slow start at the gamma threshold 
This improves performance and fairness.
 2022-02-22 19:28:35 +00:00
Mike Perry
1960bf09f3 Increment by at least 2 sendme_incs in slow start 2022-02-22 19:28:35 +00:00
Mike Perry
d62f9c9d00 Only apply more frequent cwnd updates after slow start. 2022-02-22 19:28:35 +00:00
Mike Perry
43f6f3fd3a Make N_EWMA a percentage of CWND update rate, capped by a max value. 
This proved better in Shadow sims than just a multiple of CWND.
 2022-02-22 19:28:35 +00:00
Mike Perry
3079e2cacc Relocate two parameters from circuit scope to global scope. 
Changes in these will not affect in-progress transfers.
 2022-02-22 19:28:35 +00:00
Mike Perry
4f3a0e39cf Guard against 0 time delta in BDP calc. 
This can only happen in Shadow, but it will cause issues there.
 2022-02-22 19:28:35 +00:00
Mike Perry
8052d0c2c0 Increase RTT ratio used to detect monotime jumps/stalls. 
In Shadow, we saw RTT jumps as high as 1000 naturally.

So let's set this to 5000, to give us some breathing room.
 2022-02-22 19:28:35 +00:00
Mike Perry
338d00ba92 Fix NULL pointer deref in logs 2022-02-22 19:28:35 +00:00
Mike Perry
86f81abe30 Properly compute the number or recv cells from deliver_window 
Without this conversion, there is an implict 1000-recv_cells, which causes
the mod to fail if it is not a factor of 1000.
 2022-02-22 19:28:35 +00:00
Mike Perry
b2553bfba2 Use path type hint for Vegas queue parameters. 
These parameters will vary depending on path length, especially for onions.
 2022-02-22 19:28:35 +00:00
Mike Perry
0a6cde8756 Set new defaults for congestion control parameters. 
Defaults determined from Shadow experimentation.

More parameter functionality changes to follow.
 2022-02-22 19:28:35 +00:00
David Goulet
d4cf3fadec cc: Change edge_get_ccontrol() to look at both cpath and on_circuit 
Signed-off-by: David Goulet <dgoulet@torproject.org>
 2022-02-22 19:28:35 +00:00
David Goulet
02f4e7b42e cc: Export sendme_inc validation into public function 
This is needed for client validation of server descriptor value,
before launching a rend/intro.
 2022-02-22 19:28:34 +00:00
David Goulet
bbf160d311 cc: Use trunnel extension for ntorv3 circ parameters 
Signed-off-by: David Goulet <dgoulet@torproject.org>
 2022-02-22 19:28:34 +00:00
David Goulet
dd938e58d3 protover: Add function to get the value of a single type 
We can now query the protover subsystem to get the current value we
support for a specific protover type.

This will be useful for prop324 onion service part which puts in the
FlowCtrl value in the service descriptor.

No behavior change.

Signed-off-by: David Goulet <dgoulet@torproject.org>
 2022-02-22 19:28:34 +00:00
Mike Perry
6b2086773c Add test for congestion control negotiation logic. 2022-02-22 19:28:34 +00:00
Mike Perry
b2789ae72a Add hidden torrc option to always try CC negotiation. 
This is for public network testing and for sbws. Should not otherwise be used,
hence it is an undocumented __option.

The option deliberately does not allow force-disabling congestion control, as
this is bad for queueing and fairness.
 2022-02-22 19:28:34 +00:00
Mike Perry
a0eeadfba2 Handle other places that use onion handshake type values 
We want ntor and ntorv3 to use the same queues and stats.
 2022-02-22 19:28:34 +00:00
Mike Perry
a07e008616 Congestion control usage of negotiated params 2022-02-22 19:28:34 +00:00
Mike Perry
1b1c261080 Protover flag handling for congestion control negotiation 2022-02-22 19:28:34 +00:00
Mike Perry
76bdadce12 Hook up client usage of congestion control negotiation 2022-02-22 19:28:34 +00:00
Mike Perry
b6d5fbba7d Implement congestion control parameter negotiation 2022-02-22 19:28:34 +00:00
Nick Mathewson
93318ba5e2 Convert TODO into TODO-324 for better visibility. 2022-02-22 19:28:33 +00:00
Nick Mathewson
662b9c1c0d Add stub argument for constructing congestion_control_t 2022-02-22 19:28:33 +00:00
Nick Mathewson
a511718a30 Negotiated circuit parameters must pass from worker. 2022-02-22 19:28:33 +00:00
Nick Mathewson
baaabb503c Use protover to signal support for ntor3 + congestion control. 2022-02-22 19:28:33 +00:00
Nick Mathewson
bd2e9a4409 Implement core of ntor3 negotiation. 
There are a lot of TODOs about what to send, whom to send it to, and
etc.
 2022-02-22 19:28:33 +00:00