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centosplus patch [bug#12653]
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commit f60439bc21e3337429838e477903214f5bd8277f
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ixgbe: Force VLNCTRL.VFE to be set in all VMDq paths
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When I was adding the code for enabling VLAN promiscuous mode with SR-IOV
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enabled I had inadvertently left the VLNCTRL.VFE bit unchanged as I has
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assumed there was code in another path that was setting it when we enabled
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SR-IOV. This wasn't the case and as a result we were just disabling VLAN
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filtering for all the VFs apparently.
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Also the previous patches were always clearing CFIEN which was always set
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to 0 by the hardware anyway so I am dropping the redundant bit clearing.
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Fixes: 16369564915a ("ixgbe: Add support for VLAN promiscuous with SR-IOV")
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Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
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Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
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Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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Applied-by: Akemi Yagi <toracat@centos.org>
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--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c 2016-11-16 09:52:06.000000000 -0800
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+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c 2017-01-14 07:54:51.280709835 -0800
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@@ -4066,6 +4066,8 @@ static void ixgbe_vlan_promisc_enable(st
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struct ixgbe_hw *hw = &adapter->hw;
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u32 vlnctrl, i;
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+ vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL);
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+
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switch (hw->mac.type) {
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case ixgbe_mac_82599EB:
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case ixgbe_mac_X540:
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@@ -4078,8 +4080,7 @@ static void ixgbe_vlan_promisc_enable(st
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/* fall through */
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case ixgbe_mac_82598EB:
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/* legacy case, we can just disable VLAN filtering */
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- vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL);
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- vlnctrl &= ~(IXGBE_VLNCTRL_VFE | IXGBE_VLNCTRL_CFIEN);
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+ vlnctrl &= ~IXGBE_VLNCTRL_VFE;
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IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl);
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return;
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}
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@@ -4091,6 +4092,10 @@ static void ixgbe_vlan_promisc_enable(st
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/* Set flag so we don't redo unnecessary work */
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adapter->flags2 |= IXGBE_FLAG2_VLAN_PROMISC;
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+ /* For VMDq and SR-IOV we must leave VLAN filtering enabled */
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+ vlnctrl |= IXGBE_VLNCTRL_VFE;
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+ IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl);
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+
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/* Add PF to all active pools */
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for (i = IXGBE_VLVF_ENTRIES; --i;) {
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u32 reg_offset = IXGBE_VLVFB(i * 2 + VMDQ_P(0) / 32);
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@@ -4157,6 +4162,11 @@ static void ixgbe_vlan_promisc_disable(s
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struct ixgbe_hw *hw = &adapter->hw;
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u32 vlnctrl, i;
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+ /* Set VLAN filtering to enabled */
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+ vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL);
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+ vlnctrl |= IXGBE_VLNCTRL_VFE;
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+ IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl);
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+
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switch (hw->mac.type) {
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case ixgbe_mac_82599EB:
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case ixgbe_mac_X540:
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@@ -4168,10 +4178,6 @@ static void ixgbe_vlan_promisc_disable(s
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break;
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/* fall through */
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case ixgbe_mac_82598EB:
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- vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL);
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- vlnctrl &= ~IXGBE_VLNCTRL_CFIEN;
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- vlnctrl |= IXGBE_VLNCTRL_VFE;
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- IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl);
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return;
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}
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