From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeff Kirsher Subject: [net-2.6 PATCH 2/3] ixgbe: fix memory leak when resizing rings while interface is down Date: Mon, 26 Oct 2009 14:32:05 -0700 Message-ID: <20091026213205.9993.32014.stgit@localhost.localdomain> References: <20091026213147.9993.9778.stgit@localhost.localdomain> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org, gospo@redhat.com, Alexander Duyck , Jeff Kirsher To: davem@davemloft.net Return-path: Received: from qmta06.emeryville.ca.mail.comcast.net ([76.96.30.56]:44113 "EHLO QMTA06.emeryville.ca.mail.comcast.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753482AbZJZVfl (ORCPT ); Mon, 26 Oct 2009 17:35:41 -0400 In-Reply-To: <20091026213147.9993.9778.stgit@localhost.localdomain> Sender: netdev-owner@vger.kernel.org List-ID: From: Alexander Duyck This patch resolves a memory leak that occurs when you resize the rings via the ethtool -G option while the interface is down. Signed-off-by: Alexander Duyck Signed-off-by: Jeff Kirsher --- drivers/net/ixgbe/ixgbe_ethtool.c | 22 +++++++++++++--------- 1 files changed, 13 insertions(+), 9 deletions(-) diff --git a/drivers/net/ixgbe/ixgbe_ethtool.c b/drivers/net/ixgbe/ixgbe_ethtool.c index fa314cb..856c18c 100644 --- a/drivers/net/ixgbe/ixgbe_ethtool.c +++ b/drivers/net/ixgbe/ixgbe_ethtool.c @@ -798,7 +798,7 @@ static int ixgbe_set_ringparam(struct net_device *netdev, { struct ixgbe_adapter *adapter = netdev_priv(netdev); struct ixgbe_ring *temp_tx_ring, *temp_rx_ring; - int i, err; + int i, err = 0; u32 new_rx_count, new_tx_count; bool need_update = false; @@ -822,6 +822,16 @@ static int ixgbe_set_ringparam(struct net_device *netdev, while (test_and_set_bit(__IXGBE_RESETTING, &adapter->state)) msleep(1); + if (!netif_running(adapter->netdev)) { + for (i = 0; i < adapter->num_tx_queues; i++) + adapter->tx_ring[i].count = new_tx_count; + for (i = 0; i < adapter->num_rx_queues; i++) + adapter->rx_ring[i].count = new_rx_count; + adapter->tx_ring_count = new_tx_count; + adapter->rx_ring_count = new_rx_count; + goto err_setup; + } + temp_tx_ring = kcalloc(adapter->num_tx_queues, sizeof(struct ixgbe_ring), GFP_KERNEL); if (!temp_tx_ring) { @@ -879,8 +889,7 @@ static int ixgbe_set_ringparam(struct net_device *netdev, /* if rings need to be updated, here's the place to do it in one shot */ if (need_update) { - if (netif_running(netdev)) - ixgbe_down(adapter); + ixgbe_down(adapter); /* tx */ if (new_tx_count != adapter->tx_ring_count) { @@ -897,13 +906,8 @@ static int ixgbe_set_ringparam(struct net_device *netdev, temp_rx_ring = NULL; adapter->rx_ring_count = new_rx_count; } - } - - /* success! */ - err = 0; - if (netif_running(netdev)) ixgbe_up(adapter); - + } err_setup: clear_bit(__IXGBE_RESETTING, &adapter->state); return err;