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bgpd: add bgp_path_info_has_valid_label()

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Add bgp_path_has_valid_label to check that a path_info has a valid
label.

Signed-off-by: Louis Scalbert <louis.scalbert@6wind.com>
This commit is contained in:
Louis Scalbert 2024-02-14 17:32:06 +01:00
parent 747da057e8
commit 7a513e3361
3 changed files with 18 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
bgpd/bgp_mplsvpn.c
View File

@ -4130,8 +4130,7 @@ bool bgp_mplsvpn_path_uses_valid_mpls_label(struct bgp_path_info *pi)
/* prefix_sid attribute */
return false;
if (!pi->extra || !pi->extra->num_labels ||
!bgp_is_valid_label(&pi->extra->label[0]))
if (!bgp_path_info_has_valid_label(pi))
/* invalid MPLS label */
return false;
return true;

26
bgpd/bgp_route.c
View File

@ -324,6 +324,16 @@ struct bgp_path_info_extra *bgp_path_info_extra_get(struct bgp_path_info *pi)
return pi->extra;
}
bool bgp_path_info_has_valid_label(const struct bgp_path_info *path)
{
if (!path->extra)
return false;
if (!path->extra->num_labels)
return false;
return bgp_is_valid_label(&path->extra->label[0]);
}
/* Free bgp route information. */
void bgp_path_info_free_with_caller(const char *name,
struct bgp_path_info *path)
@ -1361,10 +1371,8 @@ int bgp_path_info_cmp(struct bgp *bgp, struct bgp_path_info *new,
*/
bool new_label_valid, exist_label_valid;
new_label_valid = new->extra && new->extra->num_labels &&
bgp_is_valid_label(&new->extra->label[0]);
exist_label_valid = exist->extra && exist->extra->num_labels &&
bgp_is_valid_label(&exist->extra->label[0]);
new_label_valid = bgp_path_info_has_valid_label(new);
exist_label_valid = bgp_path_info_has_valid_label(exist);
if (new_label_valid != exist_label_valid) {
if (debug)
@ -3450,8 +3458,7 @@ static bool bgp_lu_need_null_label(struct bgp *bgp,
|| new_select->sub_type == BGP_ROUTE_AGGREGATE
|| new_select->sub_type == BGP_ROUTE_REDISTRIBUTE)
goto need_null_label;
else if (new_select->extra && new_select->extra->num_labels &&
bgp_is_valid_label(&new_select->extra->label[0]))
else if (bgp_path_info_has_valid_label(new_select))
return false;
need_null_label:
if (label == NULL)
@ -10064,8 +10071,7 @@ void route_vty_out_tag(struct vty *vty, const struct prefix *p,
}
}
if (path->extra->num_labels &&
bgp_is_valid_label(&path->extra->label[0])) {
if (bgp_path_info_has_valid_label(path)) {
label = decode_label(&path->extra->label[0]);
if (json) {
json_object_int_add(json_out, "notag", label);
@ -11270,8 +11276,8 @@ void route_vty_out_detail(struct vty *vty, struct bgp *bgp, struct bgp_dest *bn,
bgp_damp_info_vty(vty, bgp, path, afi, safi, json_path);
/* Remote Label */
if (path->extra && bgp_is_valid_label(&path->extra->label[0])
&& (safi != SAFI_EVPN && !is_route_parent_evpn(path))) {
if (bgp_path_info_has_valid_label(path) &&
(safi != SAFI_EVPN && !is_route_parent_evpn(path))) {
mpls_lse_decode(path->extra->label[0], &label, &ttl, &exp,
&bos);

1
bgpd/bgp_route.h
View File

@ -753,6 +753,7 @@ extern void bgp_path_info_delete(struct bgp_dest *dest,
struct bgp_path_info *pi);
extern struct bgp_path_info_extra *
bgp_path_info_extra_get(struct bgp_path_info *path);
extern bool bgp_path_info_has_valid_label(const struct bgp_path_info *path);
extern void bgp_path_info_set_flag(struct bgp_dest *dest,
struct bgp_path_info *path, uint32_t flag);
extern void bgp_path_info_unset_flag(struct bgp_dest *dest,