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nexedi
babeld
Commits
757d5e1e
Commit
757d5e1e
authored
Oct 23, 2008
by
Juliusz Chroboczek
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Rework and simplify send_triggered_update.
Triggered updates are no longer sent when a route gets better.
parent
5742abbd
Changes
1
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16 deletions
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route.c
route.c
+20
-16
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route.c
View file @
757d5e1e
...
...
@@ -521,8 +521,9 @@ void
send_triggered_update
(
struct
route
*
route
,
struct
source
*
oldsrc
,
unsigned
oldmetric
)
{
int
urgent
=
0
;
unsigned
newmetric
,
diff
;
/* 1 means send speedily, 2 means resend */
int
urgent
;
if
(
!
route
->
installed
)
return
;
...
...
@@ -533,24 +534,27 @@ send_triggered_update(struct route *route, struct source *oldsrc,
if
(
route
->
src
!=
oldsrc
||
(
oldmetric
<
INFINITY
&&
newmetric
>=
INFINITY
))
/* Switching sources can cause transient routing loops.
Retractions
are always urgent
. */
Retractions
can cause blackholes
. */
urgent
=
2
;
else
if
(
newmetric
>=
6
*
256
&&
oldmetric
>=
6
*
256
)
/* Don't be noisy about far-away nodes */
urgent
=
-
1
;
else
if
(
diff
>=
512
)
else
if
(
newmetric
>
oldmetric
&&
oldmetric
<
6
*
256
&&
diff
>=
512
)
/* Route getting significantly worse */
urgent
=
1
;
/* Make sure that requests are satisfied speedily */
if
(
urgent
<
1
)
{
if
(
unsatisfied_request
(
route
->
src
->
prefix
,
route
->
src
->
plen
,
else
if
(
unsatisfied_request
(
route
->
src
->
prefix
,
route
->
src
->
plen
,
route
->
seqno
,
route
->
src
->
id
))
/* Make sure that requests are satisfied speedily */
urgent
=
1
;
}
if
(
urgent
<
0
||
(
!
urgent
&&
diff
<
384
))
/* Never mind. */
else
if
(
oldmetric
>=
INFINITY
&&
newmetric
<
INFINITY
)
/* New route */
urgent
=
0
;
else
if
(
newmetric
<
oldmetric
&&
diff
<
1024
)
/* Route getting better. This may be a transient fluctuation, so
don't advertise it to avoid making routes unfeasible later on. */
return
;
else
if
(
diff
<
384
)
/* Don't fret about trivialities */
return
;
else
urgent
=
0
;
if
(
urgent
>=
2
)
send_update_resend
(
NULL
,
route
->
src
->
prefix
,
route
->
src
->
plen
);
...
...
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