netdev - [PATCH net 1/3] igc: Report VLAN EtherType matching back to user

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Date: Wed, 27 Dec 2023 13:00:38 -0800
From: Tony Nguyen <anthony.l.nguyen@...el.com>
To: davem@...emloft.net,
	kuba@...nel.org,
	pabeni@...hat.com,
	edumazet@...gle.com,
	netdev@...r.kernel.org
Cc: Kurt Kanzenbach <kurt@...utronix.de>,
	anthony.l.nguyen@...el.com,
	bigeasy@...utronix.de,
	sasha.neftin@...el.com,
	Vinicius Costa Gomes <vinicius.gomes@...el.com>,
	Simon Horman <horms@...nel.org>,
	Naama Meir <naamax.meir@...ux.intel.com>
Subject: [PATCH net 1/3] igc: Report VLAN EtherType matching back to user

From: Kurt Kanzenbach <kurt@...utronix.de>

Currently the driver allows to configure matching by VLAN EtherType.
However, the retrieval function does not report it back to the user. Add
it.

Before:
|root@...t:~# ethtool -N enp3s0 flow-type ether vlan-etype 0x8100 action 0
|Added rule with ID 63
|root@...t:~# ethtool --show-ntuple enp3s0
|4 RX rings available
|Total 1 rules
|
|Filter: 63
|        Flow Type: Raw Ethernet
|        Src MAC addr: 00:00:00:00:00:00 mask: FF:FF:FF:FF:FF:FF
|        Dest MAC addr: 00:00:00:00:00:00 mask: FF:FF:FF:FF:FF:FF
|        Ethertype: 0x0 mask: 0xFFFF
|        Action: Direct to queue 0

After:
|root@...t:~# ethtool -N enp3s0 flow-type ether vlan-etype 0x8100 action 0
|Added rule with ID 63
|root@...t:~# ethtool --show-ntuple enp3s0
|4 RX rings available
|Total 1 rules
|
|Filter: 63
|        Flow Type: Raw Ethernet
|        Src MAC addr: 00:00:00:00:00:00 mask: FF:FF:FF:FF:FF:FF
|        Dest MAC addr: 00:00:00:00:00:00 mask: FF:FF:FF:FF:FF:FF
|        Ethertype: 0x0 mask: 0xFFFF
|        VLAN EtherType: 0x8100 mask: 0x0
|        VLAN: 0x0 mask: 0xffff
|        User-defined: 0x0 mask: 0xffffffffffffffff
|        Action: Direct to queue 0

Fixes: 2b477d057e33 ("igc: Integrate flex filter into ethtool ops")
Signed-off-by: Kurt Kanzenbach <kurt@...utronix.de>
Acked-by: Vinicius Costa Gomes <vinicius.gomes@...el.com>
Reviewed-by: Simon Horman <horms@...nel.org>
Tested-by: Naama Meir <naamax.meir@...ux.intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@...el.com>
---
 drivers/net/ethernet/intel/igc/igc_ethtool.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/net/ethernet/intel/igc/igc_ethtool.c b/drivers/net/ethernet/intel/igc/igc_ethtool.c
index 785eaa8e0ba8..69b2fd006293 100644
--- a/drivers/net/ethernet/intel/igc/igc_ethtool.c
+++ b/drivers/net/ethernet/intel/igc/igc_ethtool.c
@@ -980,6 +980,12 @@ static int igc_ethtool_get_nfc_rule(struct igc_adapter *adapter,
 		fsp->m_u.ether_spec.h_proto = ETHER_TYPE_FULL_MASK;
 	}
 
+	if (rule->filter.match_flags & IGC_FILTER_FLAG_VLAN_ETYPE) {
+		fsp->flow_type |= FLOW_EXT;
+		fsp->h_ext.vlan_etype = rule->filter.vlan_etype;
+		fsp->m_ext.vlan_etype = ETHER_TYPE_FULL_MASK;
+	}
+
 	if (rule->filter.match_flags & IGC_FILTER_FLAG_VLAN_TCI) {
 		fsp->flow_type |= FLOW_EXT;
 		fsp->h_ext.vlan_tci = htons(rule->filter.vlan_tci);
-- 
2.41.0