netstacklat: relax ifindex filter due to production

Lacking a YAML ebpf_exporter config for selecting iface names
we hard-coded ifindex, but some production servers have higher
ifindex for vlan100.

Relax ifindex range as a workaround.

Signed-off-by: Jesper Dangaard Brouer <hawk@kernel.org>

Author: netoptimizer

examples/netstacklat.bpf.c

@@ -280,8 +280,10 @@ static bool filter_ifindex(u32 ifindex)
 	/* Hack for production:
 	 * - We want to exclude 'lo' which have ifindex==1.
 	 * - We want to filter on ext0 (ifindex 2) and vlan100@ext0 (ifindex 5)
+	 *   unfortunately ifindex'es are not stable, some production metals have
+	 *   ifindex==6 for vlan100@link0. Relax filter until adding YAML config.
 	 */
-	if (ifindex > 1 && ifindex < 6)
+	if (ifindex > 1 && ifindex < 12)
 		return true;
 
 	return false;