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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 <kurt@linutronix.de>
Reviewed-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@intel.com>
Tested-by: Dvora Fuxbrumer <dvorax.fuxbrumer@linux.intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
This commit is contained in:
Kurt Kanzenbach 2021-06-28 21:43:31 -07:00 committed by Tony Nguyen
parent 7991487ecb
commit 7374426221
3 changed files with 22 additions and 20 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

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

@ -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

27
drivers/net/ethernet/intel/igc/igc_ethtool.c
View File

@ -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)) &&

14
drivers/net/ethernet/intel/igc/igc_main.c
View File

@ -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);