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Special vanguard L3 increased path length does not apply for vanguards-lite

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Co-authored-by: Mike Perry <mikeperry-git@torproject.org>
This commit is contained in:
George Kadianakis 2021-07-01 17:52:58 +03:00
parent 0240c00929
commit 9afd9d0940
1 changed files with 3 additions and 9 deletions
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12
src/core/or/circuitbuild.c
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@ -1359,7 +1359,9 @@ route_len_for_purpose(uint8_t purpose, extend_info_t *exit_ei)
int routelen = DEFAULT_ROUTE_LEN;
int known_purpose = 0;
if (circuit_should_use_vanguards(purpose)) {
/* If we're using L3 vanguards, we need longer paths for onion services */
if (circuit_purpose_is_hidden_service(purpose) &&
get_options()->HSLayer3Nodes) {
/* Clients want an extra hop for rends to avoid linkability.
* Services want it for intro points to avoid publishing their
* layer3 guards. They want it for hsdir posts to use
@ -1374,14 +1376,6 @@ route_len_for_purpose(uint8_t purpose, extend_info_t *exit_ei)
purpose == CIRCUIT_PURPOSE_S_ESTABLISH_INTRO)
return routelen+1;
/* If we only have Layer2 vanguards, then we do not need
* the extra hop for linkabilty reasons (see below).
* This means all hops can be of the form:
* S/C - G - L2 - M - R/HSDir/I
*/
if (get_options()->HSLayer2Nodes && !get_options()->HSLayer3Nodes)
return routelen+1;
/* For connections to hsdirs, clients want two extra hops
* when using layer3 guards, to avoid linkability.
* Same goes for intro points. Note that the route len