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bgpd: Use get/set helpers for attr->lcommunity

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Signed-off-by: Donatas Abraitis <donatas.abraitis@gmail.com>
This commit is contained in:
Donatas Abraitis 2022-02-09 13:44:25 +02:00
parent eae63cb501
commit 1bcf3a96de
9 changed files with 130 additions and 82 deletions
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63
bgpd/bgp_attr.c
View File

@ -682,8 +682,8 @@ unsigned int attrhash_key_make(const void *p)
if (attr->community)
MIX(community_hash_make(attr->community));
if (attr->lcommunity)
MIX(lcommunity_hash_make(attr->lcommunity));
if (bgp_attr_get_lcommunity(attr))
MIX(lcommunity_hash_make(bgp_attr_get_lcommunity(attr)));
if (bgp_attr_get_ecommunity(attr))
MIX(ecommunity_hash_make(bgp_attr_get_ecommunity(attr)));
if (bgp_attr_get_ipv6_ecommunity(attr))
@ -737,7 +737,8 @@ bool attrhash_cmp(const void *p1, const void *p2)
== bgp_attr_get_ecommunity(attr2)
&& bgp_attr_get_ipv6_ecommunity(attr1)
== bgp_attr_get_ipv6_ecommunity(attr2)
&& attr1->lcommunity == attr2->lcommunity
&& bgp_attr_get_lcommunity(attr1)
== bgp_attr_get_lcommunity(attr2)
&& bgp_attr_get_cluster(attr1)
== bgp_attr_get_cluster(attr2)
&& bgp_attr_get_transit(attr1)
@ -853,6 +854,7 @@ struct attr *bgp_attr_intern(struct attr *attr)
struct attr *find;
struct ecommunity *ecomm = NULL;
struct ecommunity *ipv6_ecomm = NULL;
struct lcommunity *lcomm = NULL;
/* Intern referenced strucutre. */
if (attr->aspath) {
@ -885,11 +887,12 @@ struct attr *bgp_attr_intern(struct attr *attr)
ipv6_ecomm->refcnt++;
}
if (attr->lcommunity) {
if (!attr->lcommunity->refcnt)
attr->lcommunity = lcommunity_intern(attr->lcommunity);
lcomm = bgp_attr_get_lcommunity(attr);
if (lcomm) {
if (!lcomm->refcnt)
bgp_attr_set_lcommunity(attr, lcommunity_intern(lcomm));
else
attr->lcommunity->refcnt++;
lcomm->refcnt++;
}
struct cluster_list *cluster = bgp_attr_get_cluster(attr);
@ -1021,7 +1024,7 @@ struct attr *bgp_attr_aggregate_intern(
}
if (lcommunity) {
attr.lcommunity = lcommunity;
bgp_attr_set_lcommunity(&attr, lcommunity);
attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_LARGE_COMMUNITIES);
}
@ -1091,6 +1094,7 @@ void bgp_attr_unintern_sub(struct attr *attr)
struct ecommunity *ecomm = NULL;
struct ecommunity *ipv6_ecomm = NULL;
struct cluster_list *cluster;
struct lcommunity *lcomm = NULL;
/* aspath refcount shoud be decrement. */
if (attr->aspath)
@ -1111,9 +1115,10 @@ void bgp_attr_unintern_sub(struct attr *attr)
UNSET_FLAG(attr->flag, ATTR_FLAG_BIT(BGP_ATTR_IPV6_EXT_COMMUNITIES));
bgp_attr_set_ipv6_ecommunity(attr, NULL);
if (attr->lcommunity)
lcommunity_unintern(&attr->lcommunity);
lcomm = bgp_attr_get_lcommunity(attr);
lcommunity_unintern(&lcomm);
UNSET_FLAG(attr->flag, ATTR_FLAG_BIT(BGP_ATTR_LARGE_COMMUNITIES));
bgp_attr_set_lcommunity(attr, NULL);
cluster = bgp_attr_get_cluster(attr);
if (cluster) {
@ -1177,6 +1182,7 @@ void bgp_attr_flush(struct attr *attr)
struct ecommunity *ecomm;
struct ecommunity *ipv6_ecomm;
struct cluster_list *cluster;
struct lcommunity *lcomm;
if (attr->aspath && !attr->aspath->refcnt) {
aspath_free(attr->aspath);
@ -1192,8 +1198,10 @@ void bgp_attr_flush(struct attr *attr)
if (ipv6_ecomm && !ipv6_ecomm->refcnt)
ecommunity_free(&ipv6_ecomm);
bgp_attr_set_ipv6_ecommunity(attr, NULL);
if (attr->lcommunity && !attr->lcommunity->refcnt)
lcommunity_free(&attr->lcommunity);
lcomm = bgp_attr_get_lcommunity(attr);
if (lcomm && !lcomm->refcnt)
lcommunity_free(&lcomm);
bgp_attr_set_lcommunity(attr, NULL);
cluster = bgp_attr_get_cluster(attr);
if (cluster && !cluster->refcnt) {
@ -2271,17 +2279,18 @@ bgp_attr_large_community(struct bgp_attr_parser_args *args)
* Large community follows new attribute format.
*/
if (length == 0) {
attr->lcommunity = NULL;
bgp_attr_set_lcommunity(attr, NULL);
/* Empty extcomm doesn't seem to be invalid per se */
return bgp_attr_malformed(args, BGP_NOTIFY_UPDATE_OPT_ATTR_ERR,
args->total);
}
attr->lcommunity = lcommunity_parse(stream_pnt(peer->curr), length);
bgp_attr_set_lcommunity(
attr, lcommunity_parse(stream_pnt(peer->curr), length));
/* XXX: fix ecommunity_parse to use stream API */
stream_forward_getp(peer->curr, length);
if (!attr->lcommunity)
if (!bgp_attr_get_lcommunity(attr))
return bgp_attr_malformed(args, BGP_NOTIFY_UPDATE_OPT_ATTR_ERR,
args->total);
@ -4103,21 +4112,23 @@ bgp_size_t bgp_packet_attribute(struct bgp *bgp, struct peer *peer,
if (CHECK_FLAG(peer->af_flags[afi][safi],
PEER_FLAG_SEND_LARGE_COMMUNITY)
&& (attr->flag & ATTR_FLAG_BIT(BGP_ATTR_LARGE_COMMUNITIES))) {
if (lcom_length(attr->lcommunity) > 255) {
if (lcom_length(bgp_attr_get_lcommunity(attr)) > 255) {
stream_putc(s,
BGP_ATTR_FLAG_OPTIONAL | BGP_ATTR_FLAG_TRANS
| BGP_ATTR_FLAG_EXTLEN);
stream_putc(s, BGP_ATTR_LARGE_COMMUNITIES);
stream_putw(s, lcom_length(attr->lcommunity));
stream_putw(s,
lcom_length(bgp_attr_get_lcommunity(attr)));
} else {
stream_putc(s,
BGP_ATTR_FLAG_OPTIONAL
| BGP_ATTR_FLAG_TRANS);
stream_putc(s, BGP_ATTR_LARGE_COMMUNITIES);
stream_putc(s, lcom_length(attr->lcommunity));
stream_putc(s,
lcom_length(bgp_attr_get_lcommunity(attr)));
}
stream_put(s, attr->lcommunity->val,
lcom_length(attr->lcommunity));
stream_put(s, bgp_attr_get_lcommunity(attr)->val,
lcom_length(bgp_attr_get_lcommunity(attr)));
}
/* Route Reflector. */
@ -4547,22 +4558,24 @@ void bgp_dump_routes_attr(struct stream *s, struct attr *attr,
/* Large Community attribute. */
if (attr->flag & ATTR_FLAG_BIT(BGP_ATTR_LARGE_COMMUNITIES)) {
if (lcom_length(attr->lcommunity) > 255) {
if (lcom_length(bgp_attr_get_lcommunity(attr)) > 255) {
stream_putc(s,
BGP_ATTR_FLAG_OPTIONAL | BGP_ATTR_FLAG_TRANS
| BGP_ATTR_FLAG_EXTLEN);
stream_putc(s, BGP_ATTR_LARGE_COMMUNITIES);
stream_putw(s, lcom_length(attr->lcommunity));
stream_putw(s,
lcom_length(bgp_attr_get_lcommunity(attr)));
} else {
stream_putc(s,
BGP_ATTR_FLAG_OPTIONAL
| BGP_ATTR_FLAG_TRANS);
stream_putc(s, BGP_ATTR_LARGE_COMMUNITIES);
stream_putc(s, lcom_length(attr->lcommunity));
stream_putc(s,
lcom_length(bgp_attr_get_lcommunity(attr)));
}
stream_put(s, attr->lcommunity->val,
lcom_length(attr->lcommunity));
stream_put(s, bgp_attr_get_lcommunity(attr)->val,
lcom_length(bgp_attr_get_lcommunity(attr)));
}
/* Add a MP_NLRI attribute to dump the IPv6 next hop */

12
bgpd/bgp_attr.h
View File

@ -531,6 +531,18 @@ static inline void bgp_attr_set_ecommunity(struct attr *attr,
attr->ecommunity = ecomm;
}
static inline struct lcommunity *
bgp_attr_get_lcommunity(const struct attr *attr)
{
return attr->lcommunity;
}
static inline void bgp_attr_set_lcommunity(struct attr *attr,
struct lcommunity *lcomm)
{
attr->lcommunity = lcomm;
}
static inline struct ecommunity *
bgp_attr_get_ipv6_ecommunity(const struct attr *attr)
{

2
bgpd/bgp_debug.c
View File

@ -416,7 +416,7 @@ bool bgp_dump_attr(struct attr *attr, char *buf, size_t size)
if (CHECK_FLAG(attr->flag, ATTR_FLAG_BIT(BGP_ATTR_LARGE_COMMUNITIES)))
snprintf(buf + strlen(buf), size - strlen(buf),
", large-community %s",
lcommunity_str(attr->lcommunity, false));
lcommunity_str(bgp_attr_get_lcommunity(attr), false));
if (CHECK_FLAG(attr->flag, ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES)))
snprintf(buf + strlen(buf), size - strlen(buf),

18
bgpd/bgp_evpn_vty.c
View File

@ -1246,17 +1246,23 @@ static int bgp_show_ethernet_vpn(struct vty *vty, struct prefix_rd *prd,
if (type == bgp_show_type_lcommunity_exact) {
struct lcommunity *lcom = output_arg;
if (!pi->attr->lcommunity ||
!lcommunity_cmp(
pi->attr->lcommunity, lcom))
if (!bgp_attr_get_lcommunity(
pi->attr) ||
!lcommunity_cmp(
bgp_attr_get_lcommunity(
pi->attr),
lcom))
continue;
}
if (type == bgp_show_type_lcommunity) {
struct lcommunity *lcom = output_arg;
if (!pi->attr->lcommunity ||
!lcommunity_match(
pi->attr->lcommunity, lcom))
if (!bgp_attr_get_lcommunity(
pi->attr) ||
!lcommunity_match(
bgp_attr_get_lcommunity(
pi->attr),
lcom))
continue;
}
if (type == bgp_show_type_community) {

3
bgpd/bgp_lcommunity.c
View File

@ -274,6 +274,9 @@ void lcommunity_unintern(struct lcommunity **lcom)
{
struct lcommunity *ret;
if (!*lcom)
return;
if ((*lcom)->refcnt)
(*lcom)->refcnt--;

16
bgpd/bgp_mpath.c
View File

@ -846,8 +846,9 @@ void bgp_path_info_mpath_aggregate_update(struct bgp_path_info *new_best,
ecomm = (bgp_attr_get_ecommunity(&attr))
? ecommunity_dup(bgp_attr_get_ecommunity(&attr))
: NULL;
lcomm = (attr.lcommunity) ? lcommunity_dup(attr.lcommunity)
: NULL;
lcomm = (bgp_attr_get_lcommunity(&attr))
? lcommunity_dup(bgp_attr_get_lcommunity(&attr))
: NULL;
for (mpinfo = bgp_path_info_mpath_first(new_best); mpinfo;
mpinfo = bgp_path_info_mpath_next(mpinfo)) {
@ -884,16 +885,17 @@ void bgp_path_info_mpath_aggregate_update(struct bgp_path_info *new_best,
bgp_attr_get_ecommunity(
mpinfo->attr));
}
if (mpinfo->attr->lcommunity) {
if (bgp_attr_get_lcommunity(mpinfo->attr)) {
if (lcomm) {
lcommerge = lcommunity_merge(
lcomm,
mpinfo->attr->lcommunity);
lcomm, bgp_attr_get_lcommunity(
mpinfo->attr));
lcomm = lcommunity_uniq_sort(lcommerge);
lcommunity_free(&lcommerge);
} else
lcomm = lcommunity_dup(
mpinfo->attr->lcommunity);
bgp_attr_get_lcommunity(
mpinfo->attr));
}
}
@ -908,7 +910,7 @@ void bgp_path_info_mpath_aggregate_update(struct bgp_path_info *new_best,
attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES);
}
if (lcomm) {
attr.lcommunity = lcomm;
bgp_attr_set_lcommunity(&attr, lcomm);
attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_LARGE_COMMUNITIES);
}

71
bgpd/bgp_route.c
View File

@ -7046,7 +7046,7 @@ static bool bgp_aggregate_info_same(struct bgp_path_info *pi, uint8_t origin,
if (!ecommunity_cmp(bgp_attr_get_ecommunity(pi->attr), ecomm))
return false;
if (!lcommunity_cmp(pi->attr->lcommunity, lcomm))
if (!lcommunity_cmp(bgp_attr_get_lcommunity(pi->attr), lcomm))
return false;
if (!CHECK_FLAG(pi->flags, BGP_PATH_VALID))
@ -7473,10 +7473,10 @@ void bgp_aggregate_route(struct bgp *bgp, const struct prefix *p, afi_t afi,
/* Compute aggregate route's large community.
*/
if (pi->attr->lcommunity)
if (bgp_attr_get_lcommunity(pi->attr))
bgp_compute_aggregate_lcommunity_hash(
aggregate,
pi->attr->lcommunity);
aggregate,
bgp_attr_get_lcommunity(pi->attr));
}
if (match)
bgp_process(bgp, dest, afi, safi);
@ -7596,12 +7596,13 @@ void bgp_aggregate_delete(struct bgp *bgp, const struct prefix *p, afi_t afi,
bgp_attr_get_ecommunity(
pi->attr));
if (pi->attr->lcommunity)
if (bgp_attr_get_lcommunity(pi->attr))
/* Remove lcommunity from aggregate.
*/
bgp_remove_lcomm_from_aggregate_hash(
aggregate,
pi->attr->lcommunity);
aggregate,
bgp_attr_get_lcommunity(
pi->attr));
}
}
@ -7714,10 +7715,10 @@ static void bgp_add_route_to_aggregate(struct bgp *bgp,
/* Compute aggregate route's large community.
*/
if (pinew->attr->lcommunity)
if (bgp_attr_get_lcommunity(pinew->attr))
bgp_compute_aggregate_lcommunity(
aggregate,
pinew->attr->lcommunity);
aggregate,
bgp_attr_get_lcommunity(pinew->attr));
/* Retrieve aggregate route's as-path.
*/
@ -7816,12 +7817,11 @@ static void bgp_remove_route_from_aggregate(struct bgp *bgp, afi_t afi,
bgp_remove_ecommunity_from_aggregate(
aggregate, bgp_attr_get_ecommunity(pi->attr));
if (pi->attr->lcommunity)
if (bgp_attr_get_lcommunity(pi->attr))
/* Remove lcommunity from aggregate.
*/
bgp_remove_lcommunity_from_aggregate(
aggregate,
pi->attr->lcommunity);
aggregate, bgp_attr_get_lcommunity(pi->attr));
}
/* If this node was suppressed, process the change. */
@ -10517,14 +10517,16 @@ void route_vty_out_detail(struct vty *vty, struct bgp *bgp, struct bgp_dest *bn,
/* Line 6 display Large community */
if (attr->flag & ATTR_FLAG_BIT(BGP_ATTR_LARGE_COMMUNITIES)) {
if (json_paths) {
if (!attr->lcommunity->json)
lcommunity_str(attr->lcommunity, true);
json_object_lock(attr->lcommunity->json);
json_object_object_add(json_path, "largeCommunity",
attr->lcommunity->json);
if (!bgp_attr_get_lcommunity(attr)->json)
lcommunity_str(bgp_attr_get_lcommunity(attr),
true);
json_object_lock(bgp_attr_get_lcommunity(attr)->json);
json_object_object_add(
json_path, "largeCommunity",
bgp_attr_get_lcommunity(attr)->json);
} else {
vty_out(vty, " Large Community: %s\n",
attr->lcommunity->str);
bgp_attr_get_lcommunity(attr)->str);
}
}
@ -10909,8 +10911,11 @@ static int bgp_show_table(struct vty *vty, struct bgp *bgp, safi_t safi,
XFREE(MTYPE_TMP, communities);
}
if (!found && pi->attr->lcommunity) {
frrstr_split(pi->attr->lcommunity->str,
if (!found &&
bgp_attr_get_lcommunity(pi->attr)) {
frrstr_split(bgp_attr_get_lcommunity(
pi->attr)
->str,
" ", &communities, &num);
for (int i = 0; i < num; i++) {
const char *com2alias =
@ -11050,25 +11055,28 @@ static int bgp_show_table(struct vty *vty, struct bgp *bgp, safi_t safi,
if (type == bgp_show_type_lcommunity) {
struct lcommunity *lcom = output_arg;
if (!pi->attr->lcommunity
|| !lcommunity_match(pi->attr->lcommunity,
lcom))
if (!bgp_attr_get_lcommunity(pi->attr) ||
!lcommunity_match(
bgp_attr_get_lcommunity(pi->attr),
lcom))
continue;
}
if (type == bgp_show_type_lcommunity_exact) {
struct lcommunity *lcom = output_arg;
if (!pi->attr->lcommunity
|| !lcommunity_cmp(pi->attr->lcommunity,
lcom))
if (!bgp_attr_get_lcommunity(pi->attr) ||
!lcommunity_cmp(
bgp_attr_get_lcommunity(pi->attr),
lcom))
continue;
}
if (type == bgp_show_type_lcommunity_list) {
struct community_list *list = output_arg;
if (!lcommunity_list_match(pi->attr->lcommunity,
list))
if (!lcommunity_list_match(
bgp_attr_get_lcommunity(pi->attr),
list))
continue;
}
if (type
@ -11076,11 +11084,12 @@ static int bgp_show_table(struct vty *vty, struct bgp *bgp, safi_t safi,
struct community_list *list = output_arg;
if (!lcommunity_list_exact_match(
pi->attr->lcommunity, list))
bgp_attr_get_lcommunity(pi->attr),
list))
continue;
}
if (type == bgp_show_type_lcommunity_all) {
if (!pi->attr->lcommunity)
if (!bgp_attr_get_lcommunity(pi->attr))
continue;
}
if (type == bgp_show_type_dampend_paths

24
bgpd/bgp_routemap.c
View File

@ -1258,10 +1258,10 @@ route_match_alias(void *rule, const struct prefix *prefix, void *object)
return RMAP_MATCH;
}
if (path->attr->lcommunity) {
if (bgp_attr_get_lcommunity(path->attr)) {
found = false;
frrstr_split(path->attr->lcommunity->str, " ", &communities,
&num);
frrstr_split(bgp_attr_get_lcommunity(path->attr)->str, " ",
&communities, &num);
for (int i = 0; i < num; i++) {
const char *com2alias =
bgp_community2alias(communities[i]);
@ -1521,10 +1521,12 @@ route_match_lcommunity(void *rule, const struct prefix *prefix, void *object)
return RMAP_NOMATCH;
if (rcom->exact) {
if (lcommunity_list_exact_match(path->attr->lcommunity, list))
if (lcommunity_list_exact_match(
bgp_attr_get_lcommunity(path->attr), list))
return RMAP_MATCH;
} else {
if (lcommunity_list_match(path->attr->lcommunity, list))
if (lcommunity_list_match(bgp_attr_get_lcommunity(path->attr),
list))
return RMAP_MATCH;
}
@ -2301,12 +2303,12 @@ route_set_lcommunity(void *rule, const struct prefix *prefix, void *object)
rcs = rule;
path = object;
attr = path->attr;
old = attr->lcommunity;
old = bgp_attr_get_lcommunity(attr);
/* "none" case. */
if (rcs->none) {
attr->flag &= ~(ATTR_FLAG_BIT(BGP_ATTR_LARGE_COMMUNITIES));
attr->lcommunity = NULL;
bgp_attr_set_lcommunity(attr, NULL);
/* See the longer comment down below. */
if (old && old->refcnt == 0)
@ -2331,7 +2333,7 @@ route_set_lcommunity(void *rule, const struct prefix *prefix, void *object)
lcommunity_free(&old);
/* will be intern()'d or attr_flush()'d by bgp_update_main() */
attr->lcommunity = new;
bgp_attr_set_lcommunity(attr, new);
attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_LARGE_COMMUNITIES);
@ -2413,7 +2415,7 @@ route_set_lcommunity_delete(void *rule, const struct prefix *pfx, void *object)
path = object;
list = community_list_lookup(bgp_clist, rcom->name, rcom->name_hash,
LARGE_COMMUNITY_LIST_MASTER);
old = path->attr->lcommunity;
old = bgp_attr_get_lcommunity(path->attr);
if (list && old) {
merge = lcommunity_list_match_delete(lcommunity_dup(old), list);
@ -2429,12 +2431,12 @@ route_set_lcommunity_delete(void *rule, const struct prefix *pfx, void *object)
lcommunity_free(&old);
if (new->size == 0) {
path->attr->lcommunity = NULL;
bgp_attr_set_lcommunity(path->attr, NULL);
path->attr->flag &=
~ATTR_FLAG_BIT(BGP_ATTR_LARGE_COMMUNITIES);
lcommunity_free(&new);
} else {
path->attr->lcommunity = new;
bgp_attr_set_lcommunity(path->attr, new);
path->attr->flag |=
ATTR_FLAG_BIT(BGP_ATTR_LARGE_COMMUNITIES);
}

3
bgpd/bgp_zebra.c
View File

@ -1502,7 +1502,8 @@ void bgp_zebra_announce(struct bgp_dest *dest, const struct prefix *p,
if (info->attr->flag
& ATTR_FLAG_BIT(BGP_ATTR_LARGE_COMMUNITIES))
strlcpy(bzo.lcommunity, info->attr->lcommunity->str,
strlcpy(bzo.lcommunity,
bgp_attr_get_lcommunity(info->attr)->str,
sizeof(bzo.lcommunity));
strlcpy(bzo.selection_reason, reason,