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ixgbe: limit setting speed to only one at a time for QSFP modules

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QSFP+ modules do not support auto negotiation and should advertise only
one speed at a time.

This patch adds logic in ethtool to allow setting and reporting the
advertised speed at either 1Gbps or 10Gbps, but not both. Also limits
the speed set in ixgbe_sfp_link_config_subtask() to highest supported.
Previously the link was set to whatever the supported speeds were.

Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Emil Tantilov 2013-08-30 07:55:24 +00:00 committed by Jeff Kirsher
parent 91ffdc842b
commit ed33ff66d8
2 changed files with 22 additions and 1 deletions
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13
drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c
View file

@ -186,6 +186,11 @@ static int ixgbe_get_settings(struct net_device *netdev,
ecmd->advertising |= ADVERTISED_1000baseT_Full;
if (supported_link & IXGBE_LINK_SPEED_100_FULL)
ecmd->advertising |= ADVERTISED_100baseT_Full;
if (hw->phy.multispeed_fiber && !autoneg) {
if (supported_link & IXGBE_LINK_SPEED_10GB_FULL)
ecmd->advertising = ADVERTISED_10000baseT_Full;
}
}
if (autoneg) {
@ -314,6 +319,14 @@ static int ixgbe_set_settings(struct net_device *netdev,
if (ecmd->advertising & ~ecmd->supported)
return -EINVAL;
/* only allow one speed at a time if no autoneg */
if (!ecmd->autoneg && hw->phy.multispeed_fiber) {
if (ecmd->advertising ==
(ADVERTISED_10000baseT_Full |
ADVERTISED_1000baseT_Full))
return -EINVAL;
}
old = hw->phy.autoneg_advertised;
advertised = 0;
if (ecmd->advertising & ADVERTISED_10000baseT_Full)

10
drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
View file

@ -6000,8 +6000,16 @@ static void ixgbe_sfp_link_config_subtask(struct ixgbe_adapter *adapter)
adapter->flags &= ~IXGBE_FLAG_NEED_LINK_CONFIG;
speed = hw->phy.autoneg_advertised;
if ((!speed) && (hw->mac.ops.get_link_capabilities))
if ((!speed) && (hw->mac.ops.get_link_capabilities)) {
hw->mac.ops.get_link_capabilities(hw, &speed, &autoneg);
/* setup the highest link when no autoneg */
if (!autoneg) {
if (speed & IXGBE_LINK_SPEED_10GB_FULL)
speed = IXGBE_LINK_SPEED_10GB_FULL;
}
}
if (hw->mac.ops.setup_link)
hw->mac.ops.setup_link(hw, speed, true);