From 64615b5418bac1d3b3a50a83fb2e42091fe299fe Mon Sep 17 00:00:00 2001 From: Mitch Williams Date: Tue, 29 Aug 2017 05:32:30 -0400 Subject: [PATCH] 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 Tested-by: Andrew Bowers Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/i40e/i40e.h | 1 + .../net/ethernet/intel/i40e/i40e_ethtool.c | 7 ++++-- drivers/net/ethernet/intel/i40e/i40e_main.c | 25 +++++++++++++++++++ 3 files changed, 31 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/intel/i40e/i40e.h b/drivers/net/ethernet/intel/i40e/i40e.h index 2bc4dd0dbbf1..c78448daa7a1 100644 --- a/drivers/net/ethernet/intel/i40e/i40e.h +++ b/drivers/net/ethernet/intel/i40e/i40e.h @@ -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; diff --git a/drivers/net/ethernet/intel/i40e/i40e_ethtool.c b/drivers/net/ethernet/intel/i40e/i40e_ethtool.c index 1136d02e2e95..6203d362438c 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_ethtool.c +++ b/drivers/net/ethernet/intel/i40e/i40e_ethtool.c @@ -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 @@ flags_complete: /* 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; diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c index 3f9e89b054ec..b539469f576f 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_main.c +++ b/drivers/net/ethernet/intel/i40e/i40e_main.c @@ -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 */ -- 2.30.2