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i40e: add private flag to control source pruning 

By default, our devices do source pruning, that is, they drop receive
packets that have the source MAC matching one of the receive filters.
Unfortunately, this breaks ARP monitoring in channel bonding, as the
bonding driver expects devices to receive ARPs containing their own
source address.

Add an ethtool private flag to control this feature.

Also, remove the netif_running() check when we process our private
flags. It's OK to reset when the device is closed and in most cases we
need the reset the apply these changes.

Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Mitch Williams 2017-08-29 05:32:30 -04:00 committed by Jeff Kirsher
parent ec2f25d203
commit 64615b5418
3 changed files with 31 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/net/ethernet/intel/i40e/i40e.h
View File

@ -452,6 +452,7 @@ struct i40e_pf {
#define I40E_FLAG_TEMP_LINK_POLLING BIT_ULL(55)
#define I40E_FLAG_CLIENT_L2_CHANGE BIT_ULL(56)
#define I40E_FLAG_LEGACY_RX BIT_ULL(58)
#define I40E_FLAG_SOURCE_PRUNING_DISABLED BIT_ULL(59)
struct i40e_client_instance *cinst;
bool stat_offsets_loaded;

7
drivers/net/ethernet/intel/i40e/i40e_ethtool.c
View File

@ -227,6 +227,8 @@ static const struct i40e_priv_flags i40e_gstrings_priv_flags[] = {
I40E_PRIV_FLAG("veb-stats", I40E_FLAG_VEB_STATS_ENABLED, 0),
I40E_PRIV_FLAG("hw-atr-eviction", I40E_FLAG_HW_ATR_EVICT_ENABLED, 0),
I40E_PRIV_FLAG("legacy-rx", I40E_FLAG_LEGACY_RX, 0),
I40E_PRIV_FLAG("disable-source-pruning",
I40E_FLAG_SOURCE_PRUNING_DISABLED, 0),
};
#define I40E_PRIV_FLAGS_STR_LEN ARRAY_SIZE(i40e_gstrings_priv_flags)
@ -4189,8 +4191,9 @@ static int i40e_set_priv_flags(struct net_device *dev, u32 flags)
/* Issue reset to cause things to take effect, as additional bits
* are added we will need to create a mask of bits requiring reset
*/
if ((changed_flags & I40E_FLAG_VEB_STATS_ENABLED) ||
((changed_flags & I40E_FLAG_LEGACY_RX) && netif_running(dev)))
if (changed_flags & (I40E_FLAG_VEB_STATS_ENABLED |
I40E_FLAG_LEGACY_RX |
I40E_FLAG_SOURCE_PRUNING_DISABLED))
i40e_do_reset(pf, BIT(__I40E_PF_RESET_REQUESTED), true);
return 0;

25
drivers/net/ethernet/intel/i40e/i40e_main.c
View File

@ -9903,6 +9903,31 @@ static int i40e_add_vsi(struct i40e_vsi *vsi)
enabled_tc = i40e_pf_get_tc_map(pf);
/* Source pruning is enabled by default, so the flag is
* negative logic - if it's set, we need to fiddle with
* the VSI to disable source pruning.
*/
if (pf->flags & I40E_FLAG_SOURCE_PRUNING_DISABLED) {
memset(&ctxt, 0, sizeof(ctxt));
ctxt.seid = pf->main_vsi_seid;
ctxt.pf_num = pf->hw.pf_id;
ctxt.vf_num = 0;
ctxt.info.valid_sections |=
cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
ctxt.info.switch_id =
cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_LOCAL_LB);
ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
if (ret) {
dev_info(&pf->pdev->dev,
"update vsi failed, err %s aq_err %s\n",
i40e_stat_str(&pf->hw, ret),
i40e_aq_str(&pf->hw,
pf->hw.aq.asq_last_status));
ret = -ENOENT;
goto err;
}
}
/* MFP mode setup queue map and update VSI */
if ((pf->flags & I40E_FLAG_MFP_ENABLED) &&
!(pf->hw.func_caps.iscsi)) { /* NIC type PF */