From 73744262210c4560efb2d89385c6219739d16bbd Mon Sep 17 00:00:00 2001 From: Kurt Kanzenbach Date: Mon, 28 Jun 2021 21:43:31 -0700 Subject: igc: Make flex filter more flexible Currently flex filters are only used for filters containing user data. However, it makes sense to utilize them also for filters having multiple conditions, because that's not supported by the driver at the moment. Add it. Signed-off-by: Kurt Kanzenbach Reviewed-by: Sebastian Andrzej Siewior Signed-off-by: Vinicius Costa Gomes Tested-by: Dvora Fuxbrumer Signed-off-by: Tony Nguyen --- drivers/net/ethernet/intel/igc/igc.h | 1 + drivers/net/ethernet/intel/igc/igc_ethtool.c | 27 ++++++++++++++++----------- drivers/net/ethernet/intel/igc/igc_main.c | 14 +++++--------- 3 files changed, 22 insertions(+), 20 deletions(-) diff --git a/drivers/net/ethernet/intel/igc/igc.h b/drivers/net/ethernet/intel/igc/igc.h index c21441c8908e..a0ecfe5a4078 100644 --- a/drivers/net/ethernet/intel/igc/igc.h +++ b/drivers/net/ethernet/intel/igc/igc.h @@ -507,6 +507,7 @@ struct igc_nfc_rule { struct igc_nfc_filter filter; u32 location; u16 action; + bool flex; }; /* IGC supports a total of 32 NFC rules: 16 MAC address based, 8 VLAN priority diff --git a/drivers/net/ethernet/intel/igc/igc_ethtool.c b/drivers/net/ethernet/intel/igc/igc_ethtool.c index 5a7b27b2a95c..d3e84416248e 100644 --- a/drivers/net/ethernet/intel/igc/igc_ethtool.c +++ b/drivers/net/ethernet/intel/igc/igc_ethtool.c @@ -1222,19 +1222,29 @@ static void igc_ethtool_init_nfc_rule(struct igc_nfc_rule *rule, fsp->h_u.ether_spec.h_dest); } + /* VLAN etype matching */ + if ((fsp->flow_type & FLOW_EXT) && fsp->h_ext.vlan_etype) { + rule->filter.vlan_etype = fsp->h_ext.vlan_etype; + rule->filter.match_flags |= IGC_FILTER_FLAG_VLAN_ETYPE; + } + /* Check for user defined data */ if ((fsp->flow_type & FLOW_EXT) && (fsp->h_ext.data[0] || fsp->h_ext.data[1])) { rule->filter.match_flags |= IGC_FILTER_FLAG_USER_DATA; memcpy(rule->filter.user_data, fsp->h_ext.data, sizeof(fsp->h_ext.data)); memcpy(rule->filter.user_mask, fsp->m_ext.data, sizeof(fsp->m_ext.data)); - - /* VLAN etype matching is only valid using flex filter */ - if ((fsp->flow_type & FLOW_EXT) && fsp->h_ext.vlan_etype) { - rule->filter.vlan_etype = fsp->h_ext.vlan_etype; - rule->filter.match_flags |= IGC_FILTER_FLAG_VLAN_ETYPE; - } } + + /* When multiple filter options or user data or vlan etype is set, use a + * flex filter. + */ + if ((rule->filter.match_flags & IGC_FILTER_FLAG_USER_DATA) || + (rule->filter.match_flags & IGC_FILTER_FLAG_VLAN_ETYPE) || + (rule->filter.match_flags & (rule->filter.match_flags - 1))) + rule->flex = true; + else + rule->flex = false; } /** @@ -1264,11 +1274,6 @@ static int igc_ethtool_check_nfc_rule(struct igc_adapter *adapter, return -EINVAL; } - if (flags & (flags - 1)) { - netdev_dbg(dev, "Rule with multiple matches not supported\n"); - return -EOPNOTSUPP; - } - list_for_each_entry(tmp, &adapter->nfc_rule_list, list) { if (!memcmp(&rule->filter, &tmp->filter, sizeof(rule->filter)) && diff --git a/drivers/net/ethernet/intel/igc/igc_main.c b/drivers/net/ethernet/intel/igc/igc_main.c index 9999d8fc640b..11385c380947 100644 --- a/drivers/net/ethernet/intel/igc/igc_main.c +++ b/drivers/net/ethernet/intel/igc/igc_main.c @@ -3385,14 +3385,8 @@ static int igc_enable_nfc_rule(struct igc_adapter *adapter, { int err; - /* Check for user data first: When user data is set, the only option is - * to use a flex filter. When more options are set (ethertype, vlan tci, - * ...) construct a flex filter matching all of that. - */ - if (rule->filter.match_flags & IGC_FILTER_FLAG_USER_DATA) { - err = igc_add_flex_filter(adapter, rule); - if (err) - return err; + if (rule->flex) { + return igc_add_flex_filter(adapter, rule); } if (rule->filter.match_flags & IGC_FILTER_FLAG_ETHER_TYPE) { @@ -3431,8 +3425,10 @@ static int igc_enable_nfc_rule(struct igc_adapter *adapter, static void igc_disable_nfc_rule(struct igc_adapter *adapter, const struct igc_nfc_rule *rule) { - if (rule->filter.match_flags & IGC_FILTER_FLAG_USER_DATA) + if (rule->flex) { igc_del_flex_filter(adapter, rule->filter.flex_index); + return; + } if (rule->filter.match_flags & IGC_FILTER_FLAG_ETHER_TYPE) igc_del_etype_filter(adapter, rule->filter.etype); -- cgit v1.2.3-59-g8ed1b