[PATCH 2/2] Filter: Improve handling of sets in BGP path masks

[Kazuki Yamaguchi]

This is a follow-up for commit ef113c6f7253 ("Filter: Allow to use sets
in path masks", 2019-08-06).

Compare the content of PM_ASN_SET in path masks. A reconfiguration
was not properly triggering a reload of affected protocols when the
members of a set in a path mask change.

Also, update the printing code to so that it can display sets in a path
mask.
---
 filter/data.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/filter/data.c b/filter/data.c
index 9547a4c84833..7c33d2cb681a 100644
--- a/filter/data.c
+++ b/filter/data.c
@@ -121,6 +121,11 @@ pm_format(const struct f_path_mask *p, buffer *buf)
       buffer_print(buf, "%u..%u ", p->item[i].from, p->item[i].to);
       break;
 
+    case PM_ASN_SET:
+      tree_format(p->item[i].set, buf);
+      buffer_puts(buf, " ");
+      break;
+
     case PM_ASN_EXPR:
       ASSERT(0);
     }
@@ -221,6 +226,10 @@ pmi_same(const struct f_path_mask_item *mi1, const struct f_path_mask_item *mi2)
       if (mi1->to != mi2->to)
 	return 0;
       break;
+    case PM_ASN_SET:
+      if (!same_tree(mi1->set, mi2->set))
+	return 0;
+      break;
   }
 
   return 1;
-- 
2.27.0