diff options
| author | Jan Sokolowski <jan.sokolowski@intel.com> | 2018-03-19 09:28:03 -0700 |
|---|---|---|
| committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2018-03-19 09:42:20 -0700 |
| commit | 32c23b47dbd9765c6ec2542400f41f0d47a7d2c1 (patch) | |
| tree | 642c78d1df74909886b5cbfb0e16e8eabc84b7f7 /drivers/net/ethernet/intel/i40e/i40e_ethtool.c | |
| parent | 640a8af5841fd66a26e26f5b9fb5476a3755852a (diff) | |
| download | lwn-32c23b47dbd9765c6ec2542400f41f0d47a7d2c1.tar.gz lwn-32c23b47dbd9765c6ec2542400f41f0d47a7d2c1.zip | |
i40e: Properly check allowed advertisement capabilities
The i40e_set_link_ksettings and i40e_get_link_ksettings use different
codepaths to check available and supported advertisement modes. This
creates scenarios where it's possible to set a mode that's not allowed,
resulting in a link down.
Fix setting advertisement in i40e_set_link_ksettings by calling
i40e_get_link_ksettings to check what modes are allowed.
Signed-off-by: Jan Sokolowski <jan.sokolowski@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/i40e_ethtool.c')
| -rw-r--r-- | drivers/net/ethernet/intel/i40e/i40e_ethtool.c | 16 |
1 files changed, 7 insertions, 9 deletions
diff --git a/drivers/net/ethernet/intel/i40e/i40e_ethtool.c b/drivers/net/ethernet/intel/i40e/i40e_ethtool.c index 89807e32a898..0ce68e8a45cc 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_ethtool.c +++ b/drivers/net/ethernet/intel/i40e/i40e_ethtool.c @@ -870,23 +870,21 @@ static int i40e_set_link_ksettings(struct net_device *netdev, /* save autoneg out of ksettings */ autoneg = copy_ks.base.autoneg; - memset(&safe_ks, 0, sizeof(safe_ks)); + /* get our own copy of the bits to check against */ + memset(&safe_ks, 0, sizeof(struct ethtool_link_ksettings)); + safe_ks.base.cmd = copy_ks.base.cmd; + safe_ks.base.link_mode_masks_nwords = + copy_ks.base.link_mode_masks_nwords; + i40e_get_link_ksettings(netdev, &safe_ks); + /* Get link modes supported by hardware and check against modes * requested by the user. Return an error if unsupported mode was set. */ - i40e_phy_type_to_ethtool(pf, &safe_ks); if (!bitmap_subset(copy_ks.link_modes.advertising, safe_ks.link_modes.supported, __ETHTOOL_LINK_MODE_MASK_NBITS)) return -EINVAL; - /* get our own copy of the bits to check against */ - memset(&safe_ks, 0, sizeof(struct ethtool_link_ksettings)); - safe_ks.base.cmd = copy_ks.base.cmd; - safe_ks.base.link_mode_masks_nwords = - copy_ks.base.link_mode_masks_nwords; - i40e_get_link_ksettings(netdev, &safe_ks); - /* set autoneg back to what it currently is */ copy_ks.base.autoneg = safe_ks.base.autoneg; |