From mboxrd@z Thu Jan 1 00:00:00 1970 From: Subject: [PATCH net-next 10/13] net: ena: add mtu limitation in ena_change_mtu() Date: Sun, 18 Jun 2017 14:28:15 +0300 Message-ID: <1497785298-13468-11-git-send-email-netanel@amazon.com> References: <1497785298-13468-1-git-send-email-netanel@amazon.com> Mime-Version: 1.0 Content-Type: text/plain Cc: Netanel Belgazal , , , , , , , , To: , Return-path: Received: from smtp-fw-9101.amazon.com ([207.171.184.25]:60855 "EHLO smtp-fw-9101.amazon.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752812AbdFRLar (ORCPT ); Sun, 18 Jun 2017 07:30:47 -0400 In-Reply-To: <1497785298-13468-1-git-send-email-netanel@amazon.com> Sender: netdev-owner@vger.kernel.org List-ID: From: Netanel Belgazal Signed-off-by: Netanel Belgazal --- drivers/net/ethernet/amazon/ena/ena_netdev.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/amazon/ena/ena_netdev.c b/drivers/net/ethernet/amazon/ena/ena_netdev.c index 7dee448157bb..7f31f4ce7b8e 100644 --- a/drivers/net/ethernet/amazon/ena/ena_netdev.c +++ b/drivers/net/ethernet/amazon/ena/ena_netdev.c @@ -108,6 +108,13 @@ static int ena_change_mtu(struct net_device *dev, int new_mtu) struct ena_adapter *adapter = netdev_priv(dev); int ret; + if ((new_mtu > adapter->max_mtu) || (new_mtu < ENA_MIN_MTU)) { + netif_err(adapter, drv, dev, + "Invalid MTU setting. new_mtu: %d max mtu: %d min mtu: %d\n", + new_mtu, adapter->max_mtu, ENA_MIN_MTU); + return -EINVAL; + } + ret = ena_com_set_dev_mtu(adapter->ena_dev, new_mtu); if (!ret) { netif_dbg(adapter, drv, dev, "set MTU to %d\n", new_mtu); @@ -3008,8 +3015,6 @@ static void ena_set_conf_feat_params(struct ena_adapter *adapter, ena_set_dev_offloads(feat, netdev); adapter->max_mtu = feat->dev_attr.max_mtu; - netdev->max_mtu = adapter->max_mtu; - netdev->min_mtu = ENA_MIN_MTU; } static int ena_rss_init_default(struct ena_adapter *adapter) -- 2.7.4