diff options
| author | Anjali Singhai Jain <anjali.singhai@intel.com> | 2015-10-01 14:37:34 -0400 |
|---|---|---|
| committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2015-10-23 04:17:55 -0700 |
| commit | e7358f54a3954df16d4f87e3cad35063f1c17de5 (patch) | |
| tree | ca1124bdc83a7fdc1446914c509d9322c2bc3d44 /drivers/net/ethernet/intel/i40e/i40e_main.c | |
| parent | 7b1311807f3d3eb8bef3ccc53127838b3bea3771 (diff) | |
i40e/i40evf: Add a workaround to drop all flow control frames
This patch adds a workaround to drop any flow control frames from being
transmitted from any VSI. FW can still send flow control frames if flow
control is enabled.
With this patch in place a malicious VF cannot send flow control or PFC
packets out on the wire.
Change-ID: I4303b24e98b93066d2767fec24dfe78be591c277
Signed-off-by: Anjali Singhai Jain <anjali.singhai@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_main.c')
| -rw-r--r-- | drivers/net/ethernet/intel/i40e/i40e_main.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c index cc8c0aeab9bb..d05254c741d0 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_main.c +++ b/drivers/net/ethernet/intel/i40e/i40e_main.c @@ -6837,6 +6837,15 @@ static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit) if (pf->flags & I40E_FLAG_MSIX_ENABLED) ret = i40e_setup_misc_vector(pf); + /* Add a filter to drop all Flow control frames from any VSI from being + * transmitted. By doing so we stop a malicious VF from sending out + * PAUSE or PFC frames and potentially controlling traffic for other + * PF/VF VSIs. + * The FW can still send Flow control frames if enabled. + */ + i40e_add_filter_to_drop_tx_flow_control_frames(&pf->hw, + pf->main_vsi_seid); + /* restart the VSIs that were rebuilt and running before the reset */ i40e_pf_unquiesce_all_vsi(pf); @@ -10585,6 +10594,15 @@ static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent) i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status)); pf->hw.phy.phy_types = le32_to_cpu(abilities.phy_type); + /* Add a filter to drop all Flow control frames from any VSI from being + * transmitted. By doing so we stop a malicious VF from sending out + * PAUSE or PFC frames and potentially controlling traffic for other + * PF/VF VSIs. + * The FW can still send Flow control frames if enabled. + */ + i40e_add_filter_to_drop_tx_flow_control_frames(&pf->hw, + pf->main_vsi_seid); + /* print a string summarizing features */ i40e_print_features(pf); |