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BGP: Fixed LLGR depreferencing in bgp_rte_mergable

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Maria Matejka 2022-03-22 14:39:32 +01:00
parent 4a23ede2b0
commit dabd7bccb3
1 changed files with 5 additions and 2 deletions
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7
proto/bgp/attrs.c
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@ -2074,14 +2074,17 @@ bgp_rte_mergable(rte *pri, rte *sec)
u32 p, s;
/* Skip suppressed routes (see bgp_rte_recalculate()) */
/* LLGR draft - depreference stale routes */
if (pri->pflags != sec->pflags)
if ((pri->pflags ^ sec->pflags) & BGP_REF_SUPPRESSED)
return 0;
/* RFC 4271 9.1.2.1. Route resolvability test */
if (rte_resolvable(pri) != rte_resolvable(sec))
return 0;
/* LLGR draft - depreference stale routes */
if (rte_stale(pri) != rte_stale(sec))
return 0;
/* Start with local preferences */
x = ea_find(pri->attrs->eattrs, EA_CODE(PROTOCOL_BGP, BA_LOCAL_PREF));
y = ea_find(sec->attrs->eattrs, EA_CODE(PROTOCOL_BGP, BA_LOCAL_PREF));