bgpd, lib, zebra: Add ability to retrieve ifp without specifying a vrf

There are cases where we get an interface name but do not have a
corresponding vrf.  We care about getting an interface pointer
so just provide a function that searches all vrf's for the ifp.

Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
Reviewed-by: Radhicak Mahankali <radhika@cumulusnetworks.com>
Reviewed-by: Vivek Venkatraman <vivek@cumulusnetworks.com>

4 files changed, 21 insertions, 2 deletions

diff --git a/bgpd/bgp_routemap.c b/bgpd/bgp_routemap.c
index 311ebb3635..9833e4e86b 100644
--- a/bgpd/bgp_routemap.c
+++ b/bgpd/bgp_routemap.c
@@ -949,7 +949,7 @@ route_match_interface (void *rule, struct prefix *prefix,
       if (!info || !info->attr)
 	return RMAP_NOMATCH;
 
-      ifp = if_lookup_by_name ((char *)rule);
+      ifp = if_lookup_by_name_all_vrf ((char *)rule);
 
       if (ifp == NULL || ifp->ifindex != info->attr->nh_ifindex)
 	return RMAP_NOMATCH;
diff --git a/lib/if.c b/lib/if.c
index cf88b031b3..443cd419be 100644
--- a/lib/if.c
+++ b/lib/if.c
@@ -291,6 +291,24 @@ if_lookup_by_name_vrf (const char *name, vrf_id_t vrf_id)
 }
 
 struct interface *
+if_lookup_by_name_all_vrf (const char *name)
+{
+  struct interface *ifp;
+  struct vrf *vrf = NULL;
+  vrf_iter_t iter;
+
+  for (iter = vrf_first (); iter != VRF_ITER_INVALID; iter = vrf_next (iter))
+    {
+      vrf = vrf_iter2vrf (iter);
+      ifp = if_lookup_by_name_vrf (name, vrf->vrf_id);
+      if (ifp)
+	return ifp;
+    }
+
+  return NULL;
+}
+
+struct interface *
 if_lookup_by_name (const char *name)
 {
   return if_lookup_by_name_vrf (name, VRF_DEFAULT);
diff --git a/lib/if.h b/lib/if.h
index 797a68bf82..f9c4cd5063 100644
--- a/lib/if.h
+++ b/lib/if.h
@@ -287,6 +287,7 @@ extern struct interface *if_lookup_prefix_vrf (struct prefix *prefix,
 extern struct interface *if_lookup_by_name (const char *ifname);
 extern struct interface *if_get_by_name (const char *ifname);
 
+extern struct interface *if_lookup_by_name_all_vrf (const char *ifname);
 extern struct interface *if_lookup_by_name_vrf (const char *ifname,
                                 vrf_id_t vrf_id);
 extern struct interface *if_get_by_name_vrf (const char *ifname,
diff --git a/zebra/zebra_ptm.c b/zebra/zebra_ptm.c
index f32fedd9f6..bd4c03d1d1 100644
--- a/zebra/zebra_ptm.c
+++ b/zebra/zebra_ptm.c
@@ -492,7 +492,7 @@ zebra_ptm_handle_msg_cb(void *arg, void *in_ctxt)
   }
 
   if (strcmp(ZEBRA_PTM_INVALID_PORT_NAME, port_str)) {
-    ifp = if_lookup_by_name(port_str);
+    ifp = if_lookup_by_name_all_vrf(port_str);
 
     if (!ifp) {
       zlog_err("%s: %s not found in interface list", __func__, port_str);