s390/qeth: support SG for more device types

NETIF_F_SG support is currently limited to OSA (and for L2 even OSD)
devices. Advertise it for some more device types (OSM, L2 OSX, z/VM OSA)
that share the same code paths. For now, keep it switched off by
default on these devices.

Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/s390/net/qeth_l2_main.c

@@ -991,9 +991,16 @@ static int qeth_l2_setup_netdev(struct qeth_card *card)
 		card->dev->features |= NETIF_F_VLAN_CHALLENGED;
 	else
 		card->dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
+
+	if (card->info.type != QETH_CARD_TYPE_OSN &&
+	    card->info.type != QETH_CARD_TYPE_IQD) {
+		card->dev->priv_flags &= ~IFF_TX_SKB_SHARING;
+		card->dev->needed_headroom = sizeof(struct qeth_hdr);
+		card->dev->hw_features |= NETIF_F_SG;
+		card->dev->vlan_features |= NETIF_F_SG;
+	}
+
 	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;
 		card->dev->features |= NETIF_F_SG;
 		/* OSA 3S and earlier has no RX/TX support */
 		if (qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM)) {
@@ -1005,11 +1012,6 @@ static int qeth_l2_setup_netdev(struct qeth_card *card)
 			card->dev->vlan_features |= NETIF_F_RXCSUM;
 		}
 	}
-	if (card->info.type != QETH_CARD_TYPE_OSN &&
-	    card->info.type != QETH_CARD_TYPE_IQD) {
-		card->dev->priv_flags &= ~IFF_TX_SKB_SHARING;
-		card->dev->needed_headroom = sizeof(struct qeth_hdr);
-	}
 
 	card->info.broadcast_capable = 1;
 	qeth_l2_request_initial_mac(card);

drivers/s390/net/qeth_l3_main.c

@@ -2785,14 +2785,16 @@ static int qeth_l3_setup_netdev(struct qeth_card *card)
 			if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD))
 				card->dev->dev_id = card->info.unique_id &
 							 0xffff;
+
+			card->dev->hw_features |= NETIF_F_SG;
+			card->dev->vlan_features |= NETIF_F_SG;
+
 			if (!card->info.guestlan) {
-				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;
+				card->dev->hw_features |= NETIF_F_TSO |
+					NETIF_F_RXCSUM | NETIF_F_IP_CSUM;
+				card->dev->vlan_features |= NETIF_F_TSO |
+					NETIF_F_RXCSUM | NETIF_F_IP_CSUM;
 			}
 		}
 	} else if (card->info.type == QETH_CARD_TYPE_IQD) {