diff options
| author | Ayaz Abdulla <aabdulla@nvidia.com> | 2007-01-09 19:30:10 +0100 |
|---|---|---|
| committer | Jeff Garzik <jeff@garzik.org> | 2007-02-05 22:58:46 +0100 |
| commit | 164a86e40e6c74ec5a91c364ccf7b1a2295b0a52 (patch) | |
| tree | 1704d1820c1dc0ad72e2409bd49e16c3df74e08d /drivers/net/forcedeth.c | |
| parent | forcedeth: ring access (diff) | |
| download | linux-164a86e40e6c74ec5a91c364ccf7b1a2295b0a52.tar.xz linux-164a86e40e6c74ec5a91c364ccf7b1a2295b0a52.zip | |
forcedeth: tx locking
This patch reduces the amount of code within the lock to only the
critical sections.
Signed-Off-By: Ayaz Abdulla <aabdulla@nvidia.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'drivers/net/forcedeth.c')
| -rw-r--r-- | drivers/net/forcedeth.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/drivers/net/forcedeth.c b/drivers/net/forcedeth.c index bea826bd3168..75dbd67323ad 100644 --- a/drivers/net/forcedeth.c +++ b/drivers/net/forcedeth.c @@ -1569,12 +1569,11 @@ static int nv_start_xmit(struct sk_buff *skb, struct net_device *dev) ((skb_shinfo(skb)->frags[i].size & (NV_TX2_TSO_MAX_SIZE-1)) ? 1 : 0); } - spin_lock_irq(&np->lock); - empty_slots = nv_get_empty_tx_slots(np); if ((empty_slots - np->tx_limit_stop) <= entries) { - spin_unlock_irq(&np->lock); + spin_lock_irq(&np->lock); netif_stop_queue(dev); + spin_unlock_irq(&np->lock); return NETDEV_TX_BUSY; } @@ -1669,6 +1668,8 @@ static int nv_start_xmit(struct sk_buff *skb, struct net_device *dev) tx_flags_vlan = NV_TX3_VLAN_TAG_PRESENT | vlan_tx_tag_get(skb); } + spin_lock_irq(&np->lock); + /* set tx flags */ if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) { start_tx.orig->flaglen |= cpu_to_le32(tx_flags | tx_flags_extra); @@ -1679,6 +1680,7 @@ static int nv_start_xmit(struct sk_buff *skb, struct net_device *dev) np->put_tx.ex = put_tx.ex; } + spin_unlock_irq(&np->lock); dprintk(KERN_DEBUG "%s: nv_start_xmit: entries %d queued for transmission. tx_flags_extra: %x\n", dev->name, entries, tx_flags_extra); @@ -1693,7 +1695,6 @@ static int nv_start_xmit(struct sk_buff *skb, struct net_device *dev) } dev->trans_start = jiffies; - spin_unlock_irq(&np->lock); writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl); pci_push(get_hwbase(dev)); return NETDEV_TX_OK; |