From: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
To: davem@davemloft.net
Cc: Jacob Keller <jacob.e.keller@intel.com>,
netdev@vger.kernel.org, gospo@redhat.com, sassmann@redhat.com,
Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Subject: [net-next 04/11] ixgbe: show <2% for encoding loss on PCIe Gen3
Date: Tue, 29 Oct 2013 05:02:24 -0700 [thread overview]
Message-ID: <1383048151-15002-5-git-send-email-jeffrey.t.kirsher@intel.com> (raw)
In-Reply-To: <1383048151-15002-1-git-send-email-jeffrey.t.kirsher@intel.com>
From: Jacob Keller <jacob.e.keller@intel.com>
This patch updates the ixgbe_check_minimum_link function to correctly show that
there is some minor loss of encoding, even though we don't calculate it in the
max GT/s equation. It is small enough to not bother, but is better to report it
than not.
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
index ee90dfb..9753c8a 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
@@ -245,7 +245,7 @@ static void ixgbe_check_minimum_link(struct ixgbe_adapter *adapter,
max_gts = 4 * width;
break;
case PCIE_SPEED_8_0GT:
- /* 128b/130b encoding only reduces throughput by 1% */
+ /* 128b/130b encoding reduces throughput by less than 2% */
max_gts = 8 * width;
break;
default:
@@ -263,7 +263,7 @@ static void ixgbe_check_minimum_link(struct ixgbe_adapter *adapter,
width,
(speed == PCIE_SPEED_2_5GT ? "20%" :
speed == PCIE_SPEED_5_0GT ? "20%" :
- speed == PCIE_SPEED_8_0GT ? "N/a" :
+ speed == PCIE_SPEED_8_0GT ? "<2%" :
"Unknown"));
if (max_gts < expected_gts) {
--
1.8.3.1
next prev parent reply other threads:[~2013-10-29 12:02 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-29 12:02 [net-next 00/11][pull request] Intel Wired LAN Driver Updates Jeff Kirsher
2013-10-29 12:02 ` [net-next 01/11] vxlan: Have the NIC drivers do less work for offloads Jeff Kirsher
2013-10-29 12:02 ` [net-next 02/11] net: add might_sleep() call to napi_disable Jeff Kirsher
2013-10-29 12:02 ` [net-next 03/11] ixgbe: fix qv_lock_napi call in ixgbe_napi_disable_all Jeff Kirsher
2013-10-29 12:02 ` Jeff Kirsher [this message]
2013-10-29 12:02 ` [net-next 05/11] ixgbe: remove unnecessary duplication of PCIe bandwidth display Jeff Kirsher
2013-10-29 12:02 ` [net-next 06/11] ixgbevf: add ixgbevf_rx_skb Jeff Kirsher
2013-10-29 12:02 ` [net-next 07/11] ixgbevf: have clean_rx_irq return total_rx_packets cleaned Jeff Kirsher
2013-10-29 12:02 ` [net-next 08/11] ixgbevf: implement CONFIG_NET_RX_BUSY_POLL Jeff Kirsher
2013-10-29 12:02 ` [net-next 09/11] ixgbevf: add BP_EXTENDED_STATS for CONFIG_NET_RX_BUSY_POLL Jeff Kirsher
2013-10-29 12:02 ` [net-next 10/11] ixgbevf: Add zero_base handler to network statistics Jeff Kirsher
2013-10-29 12:02 ` [net-next 11/11] i40e: fix error return code in i40e_probe() Jeff Kirsher
2013-10-29 17:05 ` Joe Perches
2013-10-29 22:57 ` David Miller
2013-10-29 23:02 ` Joe Perches
2013-10-29 22:58 ` [net-next 00/11][pull request] Intel Wired LAN Driver Updates David Miller
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