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Merge pull request #6191 from NaveenThanikachalam/ibgp_connected

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bgpd: Enforce self-next-hop check in next-hop update.
This commit is contained in:
Donatas Abraitis 2020-04-21 23:16:03 +03:00 committed by GitHub
commit 4c60e50f7f
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GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 16 additions and 5 deletions
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8
bgpd/bgp_nht.c
View File

@ -745,6 +745,14 @@ static void evaluate_paths(struct bgp_nexthop_cache *bnc)
bnc_is_valid_nexthop =
bgp_isvalid_labeled_nexthop(bnc) ? 1 : 0;
} else {
if (bgp_update_martian_nexthop(
bnc->bgp, afi, safi, path->type,
path->sub_type, path->attr, rn)) {
if (BGP_DEBUG(nht, NHT))
zlog_debug(
"%s: prefix %pRN (vrf %s), ignoring path due to martian or self-next-hop",
__func__, rn, bgp_path->name);
} else
bnc_is_valid_nexthop =
bgp_isvalid_nexthop(bnc) ? 1 : 0;
}

6
bgpd/bgp_route.c
View File

@ -3234,9 +3234,9 @@ static bool overlay_index_equal(afi_t afi, struct bgp_path_info *path,
}
/* Check if received nexthop is valid or not. */
static bool bgp_update_martian_nexthop(struct bgp *bgp, afi_t afi, safi_t safi,
uint8_t type, uint8_t stype,
struct attr *attr, struct bgp_node *rn)
bool bgp_update_martian_nexthop(struct bgp *bgp, afi_t afi, safi_t safi,
uint8_t type, uint8_t stype, struct attr *attr,
struct bgp_node *rn)
{
bool ret = false;

3
bgpd/bgp_route.h
View File

@ -677,4 +677,7 @@ extern int bgp_show_table_rd(struct vty *vty, struct bgp *bgp, safi_t safi,
enum bgp_show_type type, void *output_arg,
bool use_json);
extern int bgp_best_path_select_defer(struct bgp *bgp, afi_t afi, safi_t safi);
extern bool bgp_update_martian_nexthop(struct bgp *bgp, afi_t afi, safi_t safi,
uint8_t type, uint8_t stype,
struct attr *attr, struct bgp_node *rn);
#endif /* _QUAGGA_BGP_ROUTE_H */