From: Ian Stokes <ian.stokes@intel.com>
Date: Fri, 29 Mar 2019 17:52:19 +0000 (+0000)
Subject: app/testpmd: verify MTU with device provided limits
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=0c85cab92f3a9a5ebb81d7ceadd3f775f2d5c6ff;p=dpdk.git

app/testpmd: verify MTU with device provided limits

This commit uses the MTU fields populated in rte_eth_dev_info_get()
to validate the MTU value being passed in port_mtu_set().

Signed-off-by: Ian Stokes <ian.stokes@intel.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
---

diff --git a/app/test-pmd/config.c b/app/test-pmd/config.c
index b9e5dd923b..cadcb512f1 100644
--- a/app/test-pmd/config.c
+++ b/app/test-pmd/config.c
@@ -1063,9 +1063,16 @@ void
 port_mtu_set(portid_t port_id, uint16_t mtu)
 {
 	int diag;
+	struct rte_eth_dev_info dev_info;
 
 	if (port_id_is_invalid(port_id, ENABLED_WARN))
 		return;
+	rte_eth_dev_info_get(port_id, &dev_info);
+	if (mtu > dev_info.max_mtu || mtu < dev_info.min_mtu) {
+		printf("Set MTU failed. MTU:%u is not in valid range, min:%u - max:%u\n",
+			mtu, dev_info.min_mtu, dev_info.max_mtu);
+		return;
+	}
 	diag = rte_eth_dev_set_mtu(port_id, mtu);
 	if (diag == 0)
 		return;