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igbvf: fix memory leak when ring size changed while interface down 

This patch resolves a memory leak which occurs while changing the ring size
while the interface is down.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Alexander Duyck 2009-10-26 11:32:25 +00:00 committed by David S. Miller
parent 759884b4d4
commit 39305965f3
1 changed files with 17 additions and 13 deletions
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30
drivers/net/igbvf/ethtool.c
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@ -279,7 +279,7 @@ static int igbvf_set_ringparam(struct net_device *netdev,
{
struct igbvf_adapter *adapter = netdev_priv(netdev);
struct igbvf_ring *temp_ring;
int err;
int err = 0;
u32 new_rx_count, new_tx_count;
if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending))
@ -299,15 +299,22 @@ static int igbvf_set_ringparam(struct net_device *netdev,
return 0;
}
temp_ring = vmalloc(sizeof(struct igbvf_ring));
if (!temp_ring)
return -ENOMEM;
while (test_and_set_bit(__IGBVF_RESETTING, &adapter->state))
msleep(1);
if (netif_running(adapter->netdev))
igbvf_down(adapter);
if (!netif_running(adapter->netdev)) {
adapter->tx_ring->count = new_tx_count;
adapter->rx_ring->count = new_rx_count;
goto clear_reset;
}
temp_ring = vmalloc(sizeof(struct igbvf_ring));
if (!temp_ring) {
err = -ENOMEM;
goto clear_reset;
}
igbvf_down(adapter);
/*
* We can't just free everything and then setup again,
@ -339,14 +346,11 @@ static int igbvf_set_ringparam(struct net_device *netdev,
memcpy(adapter->rx_ring, temp_ring,sizeof(struct igbvf_ring));
}
err = 0;
err_setup:
if (netif_running(adapter->netdev))
igbvf_up(adapter);
clear_bit(__IGBVF_RESETTING, &adapter->state);
igbvf_up(adapter);
vfree(temp_ring);
clear_reset:
clear_bit(__IGBVF_RESETTING, &adapter->state);
return err;
}