[dpdk-dev] [PATCH V1 1/2] examples/ethtool: fix data type of MTU

["Min Hu (Connor)" <humin29@huawei.com>]

From: Huisong Li <lihuisong@huawei.com>

This patch changes the data type of 'mtu' in rte_ethtool_net_change_mtu()
from 'int' to 'uint16_t'.

Fixes: bda68ab9d1e7 ("examples/ethtool: add user-space ethtool sample application")
Cc: stable@dpdk.org

Signed-off-by: Huisong Li <lihuisong@huawei.com>
---
 examples/ethtool/ethtool-app/ethapp.c | 6 +-----
 examples/ethtool/lib/rte_ethtool.c    | 9 +++++----
 examples/ethtool/lib/rte_ethtool.h    | 2 +-
 3 files changed, 7 insertions(+), 10 deletions(-)

diff --git a/examples/ethtool/ethtool-app/ethapp.c b/examples/ethtool/ethtool-app/ethapp.c
index 36a1c37..fc743ce 100644
--- a/examples/ethtool/ethtool-app/ethapp.c
+++ b/examples/ethtool/ethtool-app/ethapp.c
@@ -521,13 +521,9 @@ pcmd_mtu_callback(void *ptr_params,
 {
 	struct pcmd_intstr_params *params = ptr_params;
 	int stat;
-	int new_mtu;
+	uint16_t new_mtu;
 	char *ptr_parse_end;
 
-	if (!rte_eth_dev_is_valid_port(params->port)) {
-		printf("Error: Invalid port number %i\n", params->port);
-		return;
-	}
 	new_mtu = strtoul(params->opt, &ptr_parse_end, 10);
 	if (*ptr_parse_end != '\0' ||
 			new_mtu < RTE_ETHER_MIN_MTU ||
diff --git a/examples/ethtool/lib/rte_ethtool.c b/examples/ethtool/lib/rte_ethtool.c
index 4132516..73193ed 100644
--- a/examples/ethtool/lib/rte_ethtool.c
+++ b/examples/ethtool/lib/rte_ethtool.c
@@ -345,12 +345,13 @@ rte_ethtool_net_validate_addr(uint16_t port_id __rte_unused,
 	return rte_is_valid_assigned_ether_addr(addr);
 }
 
+
 int
-rte_ethtool_net_change_mtu(uint16_t port_id, int mtu)
+rte_ethtool_net_change_mtu(uint16_t port_id, uint16_t mtu)
 {
-	if (mtu < 0 || mtu > UINT16_MAX)
-		return -EINVAL;
-	return rte_eth_dev_set_mtu(port_id, (uint16_t)mtu);
+	RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -ENODEV);
+
+	return rte_eth_dev_set_mtu(port_id, mtu);
 }
 
 int
diff --git a/examples/ethtool/lib/rte_ethtool.h b/examples/ethtool/lib/rte_ethtool.h
index f177096..fe3250e 100644
--- a/examples/ethtool/lib/rte_ethtool.h
+++ b/examples/ethtool/lib/rte_ethtool.h
@@ -309,7 +309,7 @@ int rte_ethtool_net_validate_addr(uint16_t port_id,
  *   - (-EINVAL) if parameters invalid.
  *   - others depends on the specific operations implementation.
  */
-int rte_ethtool_net_change_mtu(uint16_t port_id, int mtu);
+int rte_ethtool_net_change_mtu(uint16_t port_id, uint16_t mtu);
 
 /**
  * Retrieve the Ethernet device traffic statistics
-- 
2.8.1