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bgpd: dismiss some zlookup checks

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bgp_nexthop_onlink(): zlookup is not used here at all
bgp_nexthop_lookup_ipv6(): rely on the detection performed by "query"
  function (this also changes the fallback value to 0), reorder if-block
bgp_nexthop_lookup(): idem
This commit is contained in:
Denis Ovsienko 2011-08-08 19:36:44 +04:00 committed by Paul Jakma
parent 318f0d8a7f
commit b64bfc1c4a
1 changed files with 6 additions and 32 deletions
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38
bgpd/bgp_nexthop.c
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@ -175,10 +175,6 @@ bgp_nexthop_onlink (afi_t afi, struct attr *attr)
{
struct bgp_node *rn;
/* If zebra is not enabled return */
if (zlookup->sock < 0)
return 1;
/* Lookup the address is onlink or not. */
if (afi == AFI_IP)
{
@ -223,14 +219,6 @@ bgp_nexthop_lookup_ipv6 (struct peer *peer, struct bgp_info *ri, int *changed,
struct bgp_nexthop_cache *bnc;
struct attr *attr;
/* If lookup is not enabled, return valid. */
if (zlookup->sock < 0)
{
if (ri->extra)
ri->extra->igpmetric = 0;
return 1;
}
/* Only check IPv6 global address only nexthop. */
attr = ri->attr;
@ -253,8 +241,9 @@ bgp_nexthop_lookup_ipv6 (struct peer *peer, struct bgp_info *ri, int *changed,
}
else
{
bnc = zlookup_query_ipv6 (&attr->extra->mp_nexthop_global);
if (bnc)
if (NULL == (bnc = zlookup_query_ipv6 (&attr->extra->mp_nexthop_global)))
bnc = bnc_new ();
else
{
if (changed)
{
@ -280,10 +269,6 @@ bgp_nexthop_lookup_ipv6 (struct peer *peer, struct bgp_info *ri, int *changed,
}
}
}
else
{
bnc = bnc_new ();
}
rn->info = bnc;
}
@ -312,14 +297,6 @@ bgp_nexthop_lookup (afi_t afi, struct peer *peer, struct bgp_info *ri,
struct bgp_nexthop_cache *bnc;
struct in_addr addr;
/* If lookup is not enabled, return valid. */
if (zlookup->sock < 0)
{
if (ri->extra)
ri->extra->igpmetric = 0;
return 1;
}
#ifdef HAVE_IPV6
if (afi == AFI_IP6)
return bgp_nexthop_lookup_ipv6 (peer, ri, changed, metricchanged);
@ -342,8 +319,9 @@ bgp_nexthop_lookup (afi_t afi, struct peer *peer, struct bgp_info *ri,
}
else
{
bnc = zlookup_query (addr);
if (bnc)
if (NULL == (bnc = zlookup_query (addr)))
bnc = bnc_new ();
else
{
if (changed)
{
@ -369,10 +347,6 @@ bgp_nexthop_lookup (afi_t afi, struct peer *peer, struct bgp_info *ri,
}
}
}
else
{
bnc = bnc_new ();
}
rn->info = bnc;
}