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ixgbe: SR-IOV: dynamic IEEE DCBx default priority changes

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IEEE DCBx has a mechanism to change the default user priority. In
the normal case the OS can handle this via cgroups, iptables, socket,
options etc.

With SR-IOV and direct assigned VF devices the default priority
needs to be set by the PF device so the inserted VLAN tag is
correct.

Signed-off-by: John Fastabend <john.r.fastabend@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Tested-by: Marcus Dennis <marcusx.e.dennis@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
John Fastabend 2012-10-19 02:34:34 +00:00 committed by Jeff Kirsher
parent 1ad759d847
commit 610a63fc8e
3 changed files with 47 additions and 10 deletions
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40
drivers/net/ethernet/intel/ixgbe/ixgbe_dcb_nl.c
View File

@ -30,6 +30,7 @@
#include <linux/dcbnl.h>
#include "ixgbe_dcb_82598.h"
#include "ixgbe_dcb_82599.h"
#include "ixgbe_sriov.h"
/* Callbacks for DCB netlink in the kernel */
#define BIT_DCB_MODE 0x01
@ -643,9 +644,11 @@ static int ixgbe_dcbnl_ieee_setapp(struct net_device *dev,
return err;
err = dcb_ieee_setapp(dev, app);
if (err)
return err;
#ifdef IXGBE_FCOE
if (!err && app->selector == IEEE_8021QAZ_APP_SEL_ETHERTYPE &&
if (app->selector == IEEE_8021QAZ_APP_SEL_ETHERTYPE &&
app->protocol == ETH_P_FCOE) {
u8 app_mask = dcb_ieee_getapp_mask(dev, app);
@ -656,6 +659,23 @@ static int ixgbe_dcbnl_ieee_setapp(struct net_device *dev,
ixgbe_dcbnl_devreset(dev);
}
#endif
/* VF devices should use default UP when available */
if (app->selector == IEEE_8021QAZ_APP_SEL_ETHERTYPE &&
app->protocol == 0) {
int vf;
adapter->default_up = app->priority;
for (vf = 0; vf < adapter->num_vfs; vf++) {
struct vf_data_storage *vfinfo = &adapter->vfinfo[vf];
if (!vfinfo->pf_qos)
ixgbe_set_vmvir(adapter, vfinfo->pf_vlan,
app->priority, vf);
}
}
return 0;
}
@ -683,6 +703,24 @@ static int ixgbe_dcbnl_ieee_delapp(struct net_device *dev,
ixgbe_dcbnl_devreset(dev);
}
#endif
/* IF default priority is being removed clear VF default UP */
if (app->selector == IEEE_8021QAZ_APP_SEL_ETHERTYPE &&
app->protocol == 0 && adapter->default_up == app->priority) {
int vf;
long unsigned int app_mask = dcb_ieee_getapp_mask(dev, app);
int qos = app_mask ? find_first_bit(&app_mask, 8) : 0;
adapter->default_up = qos;
for (vf = 0; vf < adapter->num_vfs; vf++) {
struct vf_data_storage *vfinfo = &adapter->vfinfo[vf];
if (!vfinfo->pf_qos)
ixgbe_set_vmvir(adapter, vfinfo->pf_vlan,
qos, vf);
}
}
return err;
}

9
drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c
View File

@ -447,15 +447,6 @@ static void ixgbe_set_vmolr(struct ixgbe_hw *hw, u32 vf, bool aupe)
IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
}
static void ixgbe_set_vmvir(struct ixgbe_adapter *adapter,
u16 vid, u16 qos, u32 vf)
{
struct ixgbe_hw *hw = &adapter->hw;
u32 vmvir = vid | (qos << VLAN_PRIO_SHIFT) | IXGBE_VMVIR_VLANA_DEFAULT;
IXGBE_WRITE_REG(hw, IXGBE_VMVIR(vf), vmvir);
}
static void ixgbe_clear_vmvir(struct ixgbe_adapter *adapter, u32 vf)
{
struct ixgbe_hw *hw = &adapter->hw;

8
drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.h
View File

@ -47,6 +47,14 @@ void ixgbe_enable_sriov(struct ixgbe_adapter *adapter,
const struct ixgbe_info *ii);
#endif
static inline void ixgbe_set_vmvir(struct ixgbe_adapter *adapter,
u16 vid, u16 qos, u32 vf)
{
struct ixgbe_hw *hw = &adapter->hw;
u32 vmvir = vid | (qos << VLAN_PRIO_SHIFT) | IXGBE_VMVIR_VLANA_DEFAULT;
IXGBE_WRITE_REG(hw, IXGBE_VMVIR(vf), vmvir);
}
#endif /* _IXGBE_SRIOV_H_ */