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Merge branch 'upstream-fixes' of git://lost.foo-projects.org/~ahkok/git/netdev-2.6 into upstream-fixes

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This commit is contained in:
Jeff Garzik 2007-01-07 22:33:56 -05:00
commit 81ebd49888
4 changed files with 55 additions and 7 deletions
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1
drivers/net/ixgb/ixgb.h
View File

@ -171,6 +171,7 @@ struct ixgb_adapter {
/* TX */
struct ixgb_desc_ring tx_ring ____cacheline_aligned_in_smp;
unsigned int restart_queue;
unsigned long timeo_start;
uint32_t tx_cmd_type;
uint64_t hw_csum_tx_good;

1
drivers/net/ixgb/ixgb_ethtool.c
View File

@ -79,6 +79,7 @@ static struct ixgb_stats ixgb_gstrings_stats[] = {
{"tx_window_errors", IXGB_STAT(net_stats.tx_window_errors)},
{"tx_deferred_ok", IXGB_STAT(stats.dc)},
{"tx_timeout_count", IXGB_STAT(tx_timeout_count) },
{"tx_restart_queue", IXGB_STAT(restart_queue) },
{"rx_long_length_errors", IXGB_STAT(stats.roc)},
{"rx_short_length_errors", IXGB_STAT(stats.ruc)},
#ifdef NETIF_F_TSO

3
drivers/net/ixgb/ixgb_hw.c
View File

@ -399,8 +399,9 @@ ixgb_init_rx_addrs(struct ixgb_hw *hw)
/* Zero out the other 15 receive addresses. */
DEBUGOUT("Clearing RAR[1-15]\n");
for(i = 1; i < IXGB_RAR_ENTRIES; i++) {
IXGB_WRITE_REG_ARRAY(hw, RA, (i << 1), 0);
/* Write high reg first to disable the AV bit first */
IXGB_WRITE_REG_ARRAY(hw, RA, ((i << 1) + 1), 0);
IXGB_WRITE_REG_ARRAY(hw, RA, (i << 1), 0);
}
return;

57
drivers/net/ixgb/ixgb_main.c
View File

@ -36,7 +36,7 @@ static char ixgb_driver_string[] = "Intel(R) PRO/10GbE Network Driver";
#else
#define DRIVERNAPI "-NAPI"
#endif
#define DRV_VERSION "1.0.117-k2"DRIVERNAPI
#define DRV_VERSION "1.0.126-k2"DRIVERNAPI
char ixgb_driver_version[] = DRV_VERSION;
static char ixgb_copyright[] = "Copyright (c) 1999-2006 Intel Corporation.";
@ -1287,6 +1287,7 @@ ixgb_tx_map(struct ixgb_adapter *adapter, struct sk_buff *skb,
struct ixgb_buffer *buffer_info;
int len = skb->len;
unsigned int offset = 0, size, count = 0, i;
unsigned int mss = skb_shinfo(skb)->gso_size;
unsigned int nr_frags = skb_shinfo(skb)->nr_frags;
unsigned int f;
@ -1298,6 +1299,11 @@ ixgb_tx_map(struct ixgb_adapter *adapter, struct sk_buff *skb,
while(len) {
buffer_info = &tx_ring->buffer_info[i];
size = min(len, IXGB_MAX_DATA_PER_TXD);
/* Workaround for premature desc write-backs
* in TSO mode. Append 4-byte sentinel desc */
if (unlikely(mss && !nr_frags && size == len && size > 8))
size -= 4;
buffer_info->length = size;
WARN_ON(buffer_info->dma != 0);
buffer_info->dma =
@ -1324,6 +1330,13 @@ ixgb_tx_map(struct ixgb_adapter *adapter, struct sk_buff *skb,
while(len) {
buffer_info = &tx_ring->buffer_info[i];
size = min(len, IXGB_MAX_DATA_PER_TXD);
/* Workaround for premature desc write-backs
* in TSO mode. Append 4-byte sentinel desc */
if (unlikely(mss && !nr_frags && size == len
&& size > 8))
size -= 4;
buffer_info->length = size;
buffer_info->dma =
pci_map_page(adapter->pdev,
@ -1398,11 +1411,43 @@ ixgb_tx_queue(struct ixgb_adapter *adapter, int count, int vlan_id,int tx_flags)
IXGB_WRITE_REG(&adapter->hw, TDT, i);
}
static int __ixgb_maybe_stop_tx(struct net_device *netdev, int size)
{
struct ixgb_adapter *adapter = netdev_priv(netdev);
struct ixgb_desc_ring *tx_ring = &adapter->tx_ring;
netif_stop_queue(netdev);
/* Herbert's original patch had:
* smp_mb__after_netif_stop_queue();
* but since that doesn't exist yet, just open code it. */
smp_mb();
/* We need to check again in a case another CPU has just
* made room available. */
if (likely(IXGB_DESC_UNUSED(tx_ring) < size))
return -EBUSY;
/* A reprieve! */
netif_start_queue(netdev);
++adapter->restart_queue;
return 0;
}
static int ixgb_maybe_stop_tx(struct net_device *netdev,
struct ixgb_desc_ring *tx_ring, int size)
{
if (likely(IXGB_DESC_UNUSED(tx_ring) >= size))
return 0;
return __ixgb_maybe_stop_tx(netdev, size);
}
/* Tx Descriptors needed, worst case */
#define TXD_USE_COUNT(S) (((S) >> IXGB_MAX_TXD_PWR) + \
(((S) & (IXGB_MAX_DATA_PER_TXD - 1)) ? 1 : 0))
#define DESC_NEEDED TXD_USE_COUNT(IXGB_MAX_DATA_PER_TXD) + \
MAX_SKB_FRAGS * TXD_USE_COUNT(PAGE_SIZE) + 1
#define DESC_NEEDED TXD_USE_COUNT(IXGB_MAX_DATA_PER_TXD) /* skb->date */ + \
MAX_SKB_FRAGS * TXD_USE_COUNT(PAGE_SIZE) + 1 /* for context */ \
+ 1 /* one more needed for sentinel TSO workaround */
static int
ixgb_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
@ -1430,7 +1475,8 @@ ixgb_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
spin_lock_irqsave(&adapter->tx_lock, flags);
#endif
if(unlikely(IXGB_DESC_UNUSED(&adapter->tx_ring) < DESC_NEEDED)) {
if (unlikely(ixgb_maybe_stop_tx(netdev, &adapter->tx_ring,
DESC_NEEDED))) {
netif_stop_queue(netdev);
spin_unlock_irqrestore(&adapter->tx_lock, flags);
return NETDEV_TX_BUSY;
@ -1468,8 +1514,7 @@ ixgb_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
#ifdef NETIF_F_LLTX
/* Make sure there is space in the ring for the next send. */
if(unlikely(IXGB_DESC_UNUSED(&adapter->tx_ring) < DESC_NEEDED))
netif_stop_queue(netdev);
ixgb_maybe_stop_tx(netdev, &adapter->tx_ring, DESC_NEEDED);
spin_unlock_irqrestore(&adapter->tx_lock, flags);