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[PATCH] sky2: handle out of memory on admin changes

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Don't die if we run out of memory on mtu or ring parameter change.
For other admin operations, don't rebuild Rx ring, just restart the PHY.

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
This commit is contained in:
Stephen Hemminger 2005-12-20 15:08:07 -08:00 committed by Jeff Garzik
parent edd702e847
commit 1b537565a8
1 changed files with 52 additions and 32 deletions
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84
drivers/net/sky2.c
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@ -481,6 +481,14 @@ static void sky2_phy_init(struct sky2_hw *hw, unsigned port)
gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_DEF_MSK);
}
/* Force a renegotiation */
static void sky2_phy_reinit(struct sky2_port *sky2)
{
down(&sky2->phy_sema);
sky2_phy_init(sky2->hw, sky2->port);
up(&sky2->phy_sema);
}
static void sky2_mac_init(struct sky2_hw *hw, unsigned port)
{
struct sky2_port *sky2 = netdev_priv(hw->dev[port]);
@ -1014,18 +1022,22 @@ static int sky2_up(struct net_device *dev)
return 0;
err_out:
if (sky2->rx_le)
if (sky2->rx_le) {
pci_free_consistent(hw->pdev, RX_LE_BYTES,
sky2->rx_le, sky2->rx_le_map);
if (sky2->tx_le)
sky2->rx_le = NULL;
}
if (sky2->tx_le) {
pci_free_consistent(hw->pdev,
TX_RING_SIZE * sizeof(struct sky2_tx_le),
sky2->tx_le, sky2->tx_le_map);
if (sky2->tx_ring)
kfree(sky2->tx_ring);
if (sky2->rx_ring)
kfree(sky2->rx_ring);
sky2->tx_le = NULL;
}
kfree(sky2->tx_ring);
kfree(sky2->rx_ring);
sky2->tx_ring = NULL;
sky2->rx_ring = NULL;
return err;
}
@ -1291,6 +1303,10 @@ static int sky2_down(struct net_device *dev)
unsigned port = sky2->port;
u16 ctrl;
/* Never really got started! */
if (!sky2->tx_le)
return 0;
if (netif_msg_ifdown(sky2))
printk(KERN_INFO PFX "%s: disabling interface\n", dev->name);
@ -1365,6 +1381,12 @@ static int sky2_down(struct net_device *dev)
sky2->tx_le, sky2->tx_le_map);
kfree(sky2->tx_ring);
sky2->tx_le = NULL;
sky2->rx_le = NULL;
sky2->rx_ring = NULL;
sky2->tx_ring = NULL;
return 0;
}
@ -1636,12 +1658,17 @@ static int sky2_change_mtu(struct net_device *dev, int new_mtu)
sky2_write8(hw, RB_ADDR(rxqaddr[sky2->port], RB_CTRL), RB_ENA_OP_MD);
err = sky2_rx_start(sky2);
gma_write16(hw, sky2->port, GM_GP_CTRL, ctl);
netif_poll_disable(hw->dev[0]);
netif_wake_queue(dev);
sky2_write32(hw, B0_IMSK, hw->intr_mask);
if (err)
dev_close(dev);
else {
gma_write16(hw, sky2->port, GM_GP_CTRL, ctl);
netif_poll_enable(hw->dev[0]);
netif_wake_queue(dev);
}
return err;
}
@ -2315,10 +2342,8 @@ static int sky2_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
sky2->autoneg = ecmd->autoneg;
sky2->advertising = ecmd->advertising;
if (netif_running(dev)) {
sky2_down(dev);
sky2_up(dev);
}
if (netif_running(dev))
sky2_phy_reinit(sky2);
return 0;
}
@ -2389,17 +2414,11 @@ static u32 sky2_get_msglevel(struct net_device *netdev)
static int sky2_nway_reset(struct net_device *dev)
{
struct sky2_port *sky2 = netdev_priv(dev);
struct sky2_hw *hw = sky2->hw;
if (sky2->autoneg != AUTONEG_ENABLE)
return -EINVAL;
netif_stop_queue(dev);
down(&sky2->phy_sema);
sky2_phy_reset(hw, sky2->port);
sky2_phy_init(hw, sky2->port);
up(&sky2->phy_sema);
sky2_phy_reinit(sky2);
return 0;
}
@ -2477,20 +2496,20 @@ static int sky2_set_mac_address(struct net_device *dev, void *p)
{
struct sky2_port *sky2 = netdev_priv(dev);
struct sockaddr *addr = p;
int err = 0;
if (!is_valid_ether_addr(addr->sa_data))
return -EADDRNOTAVAIL;
sky2_down(dev);
memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
memcpy_toio(sky2->hw->regs + B2_MAC_1 + sky2->port * 8,
dev->dev_addr, ETH_ALEN);
memcpy_toio(sky2->hw->regs + B2_MAC_2 + sky2->port * 8,
dev->dev_addr, ETH_ALEN);
if (dev->flags & IFF_UP)
err = sky2_up(dev);
return err;
if (netif_running(dev))
sky2_phy_reinit(sky2);
return 0;
}
static void sky2_set_multicast(struct net_device *dev)
@ -2648,10 +2667,7 @@ static int sky2_set_pauseparam(struct net_device *dev,
sky2->tx_pause = ecmd->tx_pause != 0;
sky2->rx_pause = ecmd->rx_pause != 0;
if (netif_running(dev)) {
sky2_down(dev);
err = sky2_up(dev);
}
sky2_phy_reinit(sky2);
return err;
}
@ -2813,8 +2829,11 @@ static int sky2_set_ringparam(struct net_device *dev,
sky2->rx_pending = ering->rx_pending;
sky2->tx_pending = ering->tx_pending;
if (netif_running(dev))
if (netif_running(dev)) {
err = sky2_up(dev);
if (err)
dev_close(dev);
}
return err;
}
@ -3195,7 +3214,8 @@ static int sky2_resume(struct pci_dev *pdev)
if (dev) {
if (netif_running(dev)) {
netif_device_attach(dev);
sky2_up(dev);
if (sky2_up(dev))
dev_close(dev);
}
}
}