leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

igb: only process global stats in igb_update_stats

Browse Source 
This patch moves the update of adapter->net_stats.rx/tx values out of the
interrupt routine and into igb_update_stats by just adding together the
tx/rx byte/packet counts for the rings.

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 2009-10-27 23:48:12 +00:00 committed by David S. Miller
parent a6b623e0e5
commit 3f9c016481
1 changed files with 29 additions and 32 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

61
drivers/net/igb/igb_main.c
View File

@ -3769,7 +3769,10 @@ void igb_update_stats(struct igb_adapter *adapter)
struct net_device *netdev = adapter->netdev;
struct e1000_hw *hw = &adapter->hw;
struct pci_dev *pdev = adapter->pdev;
u32 rnbc;
u16 phy_tmp;
int i;
u64 bytes, packets;
#define PHY_IDLE_ERROR_COUNT_MASK 0x00FF
@ -3782,6 +3785,29 @@ void igb_update_stats(struct igb_adapter *adapter)
if (pci_channel_offline(pdev))
return;
bytes = 0;
packets = 0;
for (i = 0; i < adapter->num_rx_queues; i++) {
u32 rqdpc_tmp = rd32(E1000_RQDPC(i)) & 0x0FFF;
adapter->rx_ring[i].rx_stats.drops += rqdpc_tmp;
netdev->stats.rx_fifo_errors += rqdpc_tmp;
bytes += adapter->rx_ring[i].rx_stats.bytes;
packets += adapter->rx_ring[i].rx_stats.packets;
}
netdev->stats.rx_bytes = bytes;
netdev->stats.rx_packets = packets;
bytes = 0;
packets = 0;
for (i = 0; i < adapter->num_tx_queues; i++) {
bytes += adapter->tx_ring[i].tx_stats.bytes;
packets += adapter->tx_ring[i].tx_stats.packets;
}
netdev->stats.tx_bytes = bytes;
netdev->stats.tx_packets = packets;
/* read stats registers */
adapter->stats.crcerrs += rd32(E1000_CRCERRS);
adapter->stats.gprc += rd32(E1000_GPRC);
adapter->stats.gorc += rd32(E1000_GORCL);
@ -3814,7 +3840,9 @@ void igb_update_stats(struct igb_adapter *adapter)
adapter->stats.gptc += rd32(E1000_GPTC);
adapter->stats.gotc += rd32(E1000_GOTCL);
rd32(E1000_GOTCH); /* clear GOTCL */
adapter->stats.rnbc += rd32(E1000_RNBC);
rnbc = rd32(E1000_RNBC);
adapter->stats.rnbc += rnbc;
netdev->stats.rx_fifo_errors += rnbc;
adapter->stats.ruc += rd32(E1000_RUC);
adapter->stats.rfc += rd32(E1000_RFC);
adapter->stats.rjc += rd32(E1000_RJC);
@ -3861,33 +3889,6 @@ void igb_update_stats(struct igb_adapter *adapter)
/* Rx Errors */
if (hw->mac.type != e1000_82575) {
u32 rqdpc_tmp;
u64 rqdpc_total = 0;
int i;
/* Read out drops stats per RX queue. Notice RQDPC (Receive
* Queue Drop Packet Count) stats only gets incremented, if
* the DROP_EN but it set (in the SRRCTL register for that
* queue). If DROP_EN bit is NOT set, then the some what
* equivalent count is stored in RNBC (not per queue basis).
* Also note the drop count is due to lack of available
* descriptors.
*/
for (i = 0; i < adapter->num_rx_queues; i++) {
rqdpc_tmp = rd32(E1000_RQDPC(i)) & 0xFFF;
adapter->rx_ring[i].rx_stats.drops += rqdpc_tmp;
rqdpc_total += adapter->rx_ring[i].rx_stats.drops;
}
netdev->stats.rx_fifo_errors = rqdpc_total;
}
/* Note RNBC (Receive No Buffers Count) is an not an exact
* drop count as the hardware FIFO might save the day. Thats
* one of the reason for saving it in rx_fifo_errors, as its
* potentially not a true drop.
*/
netdev->stats.rx_fifo_errors += adapter->stats.rnbc;
/* RLEC on some newer hardware can be incorrect so build
* our own version based on RUC and ROC */
netdev->stats.rx_errors = adapter->stats.rxerrc +
@ -4818,8 +4819,6 @@ static bool igb_clean_tx_irq(struct igb_q_vector *q_vector)
tx_ring->total_packets += total_packets;
tx_ring->tx_stats.bytes += total_bytes;
tx_ring->tx_stats.packets += total_packets;
netdev->stats.tx_bytes += total_bytes;
netdev->stats.tx_packets += total_packets;
return (count < tx_ring->count);
}
@ -5043,8 +5042,6 @@ next_desc:
rx_ring->total_bytes += total_bytes;
rx_ring->rx_stats.packets += total_packets;
rx_ring->rx_stats.bytes += total_bytes;
netdev->stats.rx_bytes += total_bytes;
netdev->stats.rx_packets += total_packets;
return cleaned;
}