[dpdk-dev] [PATCH] examples/ip_pipeline: check vlan and mpls params

["Jyoti, Anand B" <anand.b.jyoti@intel.com>]

>From e346e359ed9c5e8261f09f93629bff56d7c10a11 Mon Sep 17 00:00:00 2001
From: "Jyoti, Anand B" <anand.b.jyoti@intel.com>
Date: Fri, 6 Jan 2017 08:40:55 +0530
Subject: [PATCH] examples/ip_pipeline: check vlan and mpls params

This commit add to CLI command check for the following errors
1. svlan and cvlan IDs greater than 12 bits
2. mpls ID greater than 20 bits
3. max number of supported mpls labels to avoid array overflow

It prevents running CLI commands with invalid parameters.

Signed-off-by: Jyoti, Anand B <anand.b.jyoti@intel.com>
Acked-by: Cristian Dumitrescu <cristian.dumitrescu@intel.com>
---
 examples/ip_pipeline/pipeline/pipeline_routing.c | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/examples/ip_pipeline/pipeline/pipeline_routing.c b/examples/ip_pipeline/pipeline/pipeline_routing.c
index 3aadbf9..3deaff9 100644
--- a/examples/ip_pipeline/pipeline/pipeline_routing.c
+++ b/examples/ip_pipeline/pipeline/pipeline_routing.c
@@ -494,6 +494,26 @@ app_pipeline_routing_add_route(struct app_params *app,
 		/* data */
 		if (data->port_id >= p->n_ports_out)
 			return -1;
+
+		/* Valid range of VLAN tags 12 bits */
+		if (data->flags & PIPELINE_ROUTING_ROUTE_QINQ)
+			if ((data->l2.qinq.svlan & 0xF000) ||
+					(data->l2.qinq.cvlan & 0xF000))
+				return -1;
+
+		/* Max number of MPLS labels supported */
+		if (data->flags & PIPELINE_ROUTING_ROUTE_MPLS) {
+			uint32_t i;
+
+			if (data->l2.mpls.n_labels >
+					PIPELINE_ROUTING_MPLS_LABELS_MAX)
+				return -1;
+
+			/* Max MPLS label value 20 bits */
+			for (i = 0; i < data->l2.mpls.n_labels; i++)
+				if (data->l2.mpls.labels[i] & 0xFFF00000)
+					return -1;
+		}
 	}
 	break;
 
-- 
2.7.4