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Adds route resolvability test.

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This commit is contained in:
Ondrej Zajicek 2010-07-28 13:13:34 +02:00
parent 1b180121a9
commit ac3ac49a71
1 changed files with 9 additions and 0 deletions
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9
proto/bgp/attrs.c
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@ -1023,6 +1023,15 @@ bgp_rte_better(rte *new, rte *old)
eattr *x, *y;
u32 n, o;
/* RFC 4271 9.1.2.1. Route resolvability test */
/* non-NULL iface means it is either RTD_ROUTER or RTD_DEVICE route */
n = new->attrs->iface != NULL;
o = old->attrs->iface != NULL;
if (n > o)
return 1;
if (n < o)
return 0;
/* Start with local preferences */
x = ea_find(new->attrs->eattrs, EA_CODE(EAP_BGP, BA_LOCAL_PREF));
y = ea_find(old->attrs->eattrs, EA_CODE(EAP_BGP, BA_LOCAL_PREF));