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authorPaweł Jabłoński <pawel.jablonski@intel.com>2018-08-20 08:12:26 -0700
committerJeff Kirsher <jeffrey.t.kirsher@intel.com>2018-08-30 13:53:03 -0700
commitae1e29f671b467f3e9e9aa2b82ee40e4300ea810 (patch)
treef9836ea73e4988a8068221ba88a38d01ee8d6275 /drivers/net/ethernet/intel/i40e
parenti40evf: update ethtool stats code and use helper functions (diff)
downloadlinux-dev-ae1e29f671b467f3e9e9aa2b82ee40e4300ea810.tar.xz
linux-dev-ae1e29f671b467f3e9e9aa2b82ee40e4300ea810.zip
i40evf: Change a VF mac without reloading the VF driver
Add possibility to change a VF mac address from host side without reloading the VF driver on the guest side. Without this patch it is not possible to change the VF mac because executing i40evf_virtchnl_completion function with VIRTCHNL_OP_GET_VF_RESOURCES opcode resets the VF mac address to previous value. Signed-off-by: Paweł Jabłoński <pawel.jablonski@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/ethernet/intel/i40e')
-rw-r--r--drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c8
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
index c6d24eaede18..f56c645588f3 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
@@ -2458,7 +2458,7 @@ static inline int i40e_check_vf_permission(struct i40e_vf *vf,
!is_multicast_ether_addr(addr) && vf->pf_set_mac &&
!ether_addr_equal(addr, vf->default_lan_addr.addr)) {
dev_err(&pf->pdev->dev,
- "VF attempting to override administratively set MAC address, reload the VF driver to resume normal operation\n");
+ "VF attempting to override administratively set MAC address, bring down and up the VF interface to resume normal operation\n");
return -EPERM;
}
}
@@ -3873,9 +3873,11 @@ int i40e_ndo_set_vf_mac(struct net_device *netdev, int vf_id, u8 *mac)
mac, vf_id);
}
- /* Force the VF driver stop so it has to reload with new MAC address */
+ /* Force the VF interface down so it has to bring up with new MAC
+ * address
+ */
i40e_vc_disable_vf(vf);
- dev_info(&pf->pdev->dev, "Reload the VF driver to make this change effective.\n");
+ dev_info(&pf->pdev->dev, "Bring down and up the VF interface to make this change effective.\n");
error_param:
return ret;