netdev - [PATCH net-next 10/13] qeth: add network device features for VLAN devices

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Date:	Thu, 16 Jun 2016 16:19:00 +0200
From:	Ursula Braun <ubraun@...ux.vnet.ibm.com>
To:	davem@...emloft.net
Cc:	netdev@...r.kernel.org, linux-s390@...r.kernel.org,
	schwidefsky@...ibm.com, heiko.carstens@...ibm.com,
	utz.bacher@...ibm.com
Subject: [PATCH net-next 10/13] qeth: add network device features for VLAN devices

From: Hans Wippel <hwippel@...ux.vnet.ibm.com>

Network device features indicate the capabilities of network devices (e.g.,
TX checksum offloading and TSO) and their configuration state. Additional
network device features (vlan_features) indicate for each network device,
which capabilities can be used on VLAN devices, that are configured on the
respective base network device.

In the current qeth implementation, network device features are only set
for the base network devices and not for the VLAN devices. Thus, features
like TX checksum offloading cannot be used on VLAN devices.

This patch adds network device features to vlan_features, so they can be
used by VLAN devices.

Signed-off-by: Hans Wippel <hwippel@...ux.vnet.ibm.com>
Signed-off-by: Ursula Braun <ubraun@...ux.vnet.ibm.com>
---
 drivers/s390/net/qeth_l2_main.c | 9 +++++++--
 drivers/s390/net/qeth_l3_main.c | 3 +++
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/drivers/s390/net/qeth_l2_main.c b/drivers/s390/net/qeth_l2_main.c
index 928a4ad..9fd48de 100644
--- a/drivers/s390/net/qeth_l2_main.c
+++ b/drivers/s390/net/qeth_l2_main.c
@@ -1113,11 +1113,16 @@ static int qeth_l2_setup_netdev(struct qeth_card *card)
 	card->dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
 	if (card->info.type == QETH_CARD_TYPE_OSD && !card->info.guestlan) {
 		card->dev->hw_features = NETIF_F_SG;
+		card->dev->vlan_features = NETIF_F_SG;
 		/* OSA 3S and earlier has no RX/TX support */
-		if (qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
+		if (qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM)) {
 			card->dev->hw_features |= NETIF_F_IP_CSUM;
-		if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
+			card->dev->vlan_features |= NETIF_F_IP_CSUM;
+		}
+		if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) {
 			card->dev->hw_features |= NETIF_F_RXCSUM;
+			card->dev->vlan_features |= NETIF_F_RXCSUM;
+		}
 		/* Turn on SG per default */
 		card->dev->features |= NETIF_F_SG;
 	}
diff --git a/drivers/s390/net/qeth_l3_main.c b/drivers/s390/net/qeth_l3_main.c
index fc81776..05f764c 100644
--- a/drivers/s390/net/qeth_l3_main.c
+++ b/drivers/s390/net/qeth_l3_main.c
@@ -3106,6 +3106,9 @@ static int qeth_l3_setup_netdev(struct qeth_card *card)
 				card->dev->hw_features = NETIF_F_SG |
 					NETIF_F_RXCSUM | NETIF_F_IP_CSUM |
 					NETIF_F_TSO;
+				card->dev->vlan_features = NETIF_F_SG |
+					NETIF_F_RXCSUM | NETIF_F_IP_CSUM |
+					NETIF_F_TSO;
 				card->dev->features = NETIF_F_SG;
 			}
 		}
-- 
2.6.6