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bgpd: Handle route-maps properly for default-originate route-map command

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The problem is that only prefixes were handled and any other `match`
commands were ignored. Let's do not forget them as well.

Signed-off-by: Donatas Abraitis <donatas.abraitis@gmail.com>
This commit is contained in:
Donatas Abraitis 2020-10-29 21:41:12 +02:00
parent cd8cae5489
commit f2ee6d5cd9
3 changed files with 35 additions and 20 deletions
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2
bgpd/bgp_route.c
View File

@ -1687,7 +1687,7 @@ void bgp_notify_conditional_adv_scanner(struct update_subgroup *subgrp)
}
static void subgroup_announce_reset_nhop(uint8_t family, struct attr *attr)
void subgroup_announce_reset_nhop(uint8_t family, struct attr *attr)
{
if (family == AF_INET) {
attr->nexthop.s_addr = INADDR_ANY;

2
bgpd/bgp_route.h
View File

@ -757,5 +757,5 @@ extern int bgp_distance_set(uint8_t distance, const char *ip_str,
extern int bgp_distance_unset(uint8_t distance, const char *ip_str,
const char *access_list_str, afi_t afi,
safi_t safi, char *errmsg, size_t errmsg_len);
extern void subgroup_announce_reset_nhop(uint8_t family, struct attr *attr);
#endif /* _QUAGGA_BGP_ROUTE_H */

51
bgpd/bgp_updgrp_adv.c
View File

@ -731,7 +731,6 @@ void subgroup_default_originate(struct update_subgroup *subgrp, int withdraw)
struct bgp *bgp;
struct attr attr;
struct attr *new_attr = &attr;
struct aspath *aspath;
struct prefix p;
struct peer *from;
struct bgp_dest *dest;
@ -756,7 +755,6 @@ void subgroup_default_originate(struct update_subgroup *subgrp, int withdraw)
from = bgp->peer_self;
bgp_attr_default_set(&attr, BGP_ORIGIN_IGP);
aspath = attr.aspath;
attr.local_pref = bgp->default_local_pref;
@ -772,12 +770,6 @@ void subgroup_default_originate(struct update_subgroup *subgrp, int withdraw)
}
if (peer->default_rmap[afi][safi].name) {
struct attr attr_tmp = attr;
struct bgp_path_info bpi_rmap = {0};
bpi_rmap.peer = bgp->peer_self;
bpi_rmap.attr = &attr_tmp;
SET_FLAG(bgp->peer_self->rmap_type, PEER_RMAP_TYPE_DEFAULT);
/* Iterate over the RIB to see if we can announce
@ -789,20 +781,45 @@ void subgroup_default_originate(struct update_subgroup *subgrp, int withdraw)
if (!bgp_dest_has_bgp_path_info_data(dest))
continue;
ret = route_map_apply(peer->default_rmap[afi][safi].map,
bgp_dest_get_prefix(dest),
RMAP_BGP, &bpi_rmap);
for (pi = bgp_dest_get_bgp_path_info(dest); pi;
pi = pi->next) {
struct attr tmp_attr;
struct bgp_path_info tmp_pi;
struct bgp_path_info_extra tmp_pie;
if (ret != RMAP_DENYMATCH)
tmp_attr = *pi->attr;
prep_for_rmap_apply(&tmp_pi, &tmp_pie, dest, pi,
pi->peer, &tmp_attr);
ret = route_map_apply(
peer->default_rmap[afi][safi].map,
bgp_dest_get_prefix(dest), RMAP_BGP,
&tmp_pi);
if (ret == RMAP_DENYMATCH) {
bgp_attr_flush(&tmp_attr);
continue;
} else {
new_attr = bgp_attr_intern(&tmp_attr);
new_attr->aspath = attr.aspath;
subgroup_announce_reset_nhop(
(peer_cap_enhe(peer, afi, safi)
? AF_INET6
: AF_INET),
new_attr);
break;
}
}
if (ret == RMAP_PERMITMATCH)
break;
}
bgp->peer_self->rmap_type = 0;
new_attr = bgp_attr_intern(&attr_tmp);
if (ret == RMAP_DENYMATCH) {
bgp_attr_flush(&attr_tmp);
if (ret == RMAP_DENYMATCH)
withdraw = 1;
}
}
/* Check if the default route is in local BGP RIB which is
@ -881,8 +898,6 @@ void subgroup_default_originate(struct update_subgroup *subgrp, int withdraw)
subgroup_default_update_packet(subgrp, new_attr, from);
}
}
aspath_unintern(&aspath);
}
/*