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Spec compliance: if weighted MTBF of a router is at least 5 days, always vote it as Stable.

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svn:r17821
This commit is contained in:
Nick Mathewson 2008-12-29 20:17:18 +00:00
parent f7fb1bf931
commit d640e2ab00
2 changed files with 5 additions and 3 deletions
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2
ChangeLog
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@ -23,6 +23,8 @@ Changes in version 0.2.1.10-alpha - 2009-01-??
don't need to use RELAY_EARLY cells: the first hop knows what kind of don't need to use RELAY_EARLY cells: the first hop knows what kind of
cell it is, and nobody else can even see the cell type. This makes cell it is, and nobody else can even see the cell type. This makes
it easier to cannibalize circuits like this later. it easier to cannibalize circuits like this later.
- Authorities now list vote for the Stable flag for any router whose
weighted MTBF is at least 5 days, regardless of the mean MTBF.
o Code simplifications and refactoring: o Code simplifications and refactoring:
- Change our header file guard macros to be less likely to conflict - Change our header file guard macros to be less likely to conflict

6
src/or/dirserv.c
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@ -1625,7 +1625,6 @@ should_generate_v2_networkstatus(void)
#define UPTIME_TO_GUARANTEE_STABLE (3600*24*30) #define UPTIME_TO_GUARANTEE_STABLE (3600*24*30)
/** If a router's MTBF is at least this value, then it is always stable. /** If a router's MTBF is at least this value, then it is always stable.
* See above. (Corresponds to about 7 days for current decay rates.) */ * See above. (Corresponds to about 7 days for current decay rates.) */
/*XXXX021 Never actually used! */
#define MTBF_TO_GUARANTEE_STABLE (60*60*24*5) #define MTBF_TO_GUARANTEE_STABLE (60*60*24*5)
/** Similarly, we protect sufficiently fast nodes from being pushed /** Similarly, we protect sufficiently fast nodes from being pushed
* out of the set of Fast nodes. */ * out of the set of Fast nodes. */
@ -1695,7 +1694,7 @@ dirserv_thinks_router_is_unreliable(time_t now,
{ {
if (need_uptime) { if (need_uptime) {
if (!enough_mtbf_info) { if (!enough_mtbf_info) {
/* XXX021 Once most authorities are on v3, we should change the rule from /* XXX022 Once most authorities are on v3, we should change the rule from
* "use uptime if we don't have mtbf data" to "don't advertise Stable on * "use uptime if we don't have mtbf data" to "don't advertise Stable on
* v3 if we don't have enough mtbf data." */ * v3 if we don't have enough mtbf data." */
long uptime = real_uptime(router, now); long uptime = real_uptime(router, now);
@ -1705,7 +1704,8 @@ dirserv_thinks_router_is_unreliable(time_t now,
} else { } else {
double mtbf = double mtbf =
rep_hist_get_stability(router->cache_info.identity_digest, now); rep_hist_get_stability(router->cache_info.identity_digest, now);
if (mtbf < stable_mtbf) if (mtbf < stable_mtbf &&
mtbf < MTBF_TO_GUARANTEE_STABLE)
return 1; return 1;
} }
} }