cxgb3: do vlan cleanup

- unify vlan and nonvlan rx path
- kill pi->vlan_grp and vlan_rx_register
- allow to turn on/off rx/tx vlan accel via ethtool (set_features)

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/cxgb3/adapter.h

@@ -45,7 +45,6 @@
 #include "t3cdev.h"
 #include <asm/io.h>
 
-struct vlan_group;
 struct adapter;
 struct sge_qset;
 struct port_info;
@@ -66,7 +65,6 @@ struct iscsi_config {
 
 struct port_info {
 	struct adapter *adapter;
-	struct vlan_group *vlan_grp;
 	struct sge_qset *qs;
 	u8 port_id;
 	u8 nqsets;

drivers/net/cxgb3/cxgb3_main.c

@@ -2532,25 +2532,51 @@ static void t3_synchronize_rx(struct adapter *adap, const struct port_info *p)
 	}
 }
 
-static void vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
+static void cxgb_vlan_mode(struct net_device *dev, u32 features)
 {
 	struct port_info *pi = netdev_priv(dev);
 	struct adapter *adapter = pi->adapter;
 
-	pi->vlan_grp = grp;
-	if (adapter->params.rev > 0)
-		t3_set_vlan_accel(adapter, 1 << pi->port_id, grp != NULL);
-	else {
+	if (adapter->params.rev > 0) {
+		t3_set_vlan_accel(adapter, 1 << pi->port_id,
+				  features & NETIF_F_HW_VLAN_RX);
+	} else {
 		/* single control for all ports */
-		unsigned int i, have_vlans = 0;
+		unsigned int i, have_vlans = features & NETIF_F_HW_VLAN_RX;
+
 		for_each_port(adapter, i)
-		    have_vlans |= adap2pinfo(adapter, i)->vlan_grp != NULL;
+			have_vlans |=
+				adapter->port[i]->features & NETIF_F_HW_VLAN_RX;
 
 		t3_set_vlan_accel(adapter, 1, have_vlans);
 	}
 	t3_synchronize_rx(adapter, pi);
 }
 
+static u32 cxgb_fix_features(struct net_device *dev, u32 features)
+{
+	/*
+	 * Since there is no support for separate rx/tx vlan accel
+	 * enable/disable make sure tx flag is always in same state as rx.
+	 */
+	if (features & NETIF_F_HW_VLAN_RX)
+		features |= NETIF_F_HW_VLAN_TX;
+	else
+		features &= ~NETIF_F_HW_VLAN_TX;
+
+	return features;
+}
+
+static int cxgb_set_features(struct net_device *dev, u32 features)
+{
+	u32 changed = dev->features ^ features;
+
+	if (changed & NETIF_F_HW_VLAN_RX)
+		cxgb_vlan_mode(dev, features);
+
+	return 0;
+}
+
 #ifdef CONFIG_NET_POLL_CONTROLLER
 static void cxgb_netpoll(struct net_device *dev)
 {
@@ -3131,7 +3157,8 @@ static const struct net_device_ops cxgb_netdev_ops = {
 	.ndo_do_ioctl		= cxgb_ioctl,
 	.ndo_change_mtu		= cxgb_change_mtu,
 	.ndo_set_mac_address	= cxgb_set_mac_addr,
-	.ndo_vlan_rx_register	= vlan_rx_register,
+	.ndo_fix_features	= cxgb_fix_features,
+	.ndo_set_features	= cxgb_set_features,
 #ifdef CONFIG_NET_POLL_CONTROLLER
 	.ndo_poll_controller	= cxgb_netpoll,
 #endif
@@ -3263,9 +3290,8 @@ static int __devinit init_one(struct pci_dev *pdev,
 		netdev->mem_start = mmio_start;
 		netdev->mem_end = mmio_start + mmio_len - 1;
 		netdev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM |
-			NETIF_F_TSO | NETIF_F_RXCSUM;
-		netdev->features |= netdev->hw_features |
-			NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
+			NETIF_F_TSO | NETIF_F_RXCSUM | NETIF_F_HW_VLAN_RX;
+		netdev->features |= netdev->hw_features | NETIF_F_HW_VLAN_TX;
 		if (pci_using_dac)
 			netdev->features |= NETIF_F_HIGHDMA;
 
@@ -3329,6 +3355,9 @@ static int __devinit init_one(struct pci_dev *pdev,
 	err = sysfs_create_group(&adapter->port[0]->dev.kobj,
 				 &cxgb3_attr_group);
 
+	for_each_port(adapter, i)
+		cxgb_vlan_mode(adapter->port[i], adapter->port[i]->features);
+
 	print_port_info(adapter, ai);
 	return 0;
 

drivers/net/cxgb3/cxgb3_offload.c

@@ -176,16 +176,13 @@ static struct net_device *get_iff_from_mac(struct adapter *adapter,
 	int i;
 
 	for_each_port(adapter, i) {
-		struct vlan_group *grp;
 		struct net_device *dev = adapter->port[i];
-		const struct port_info *p = netdev_priv(dev);
 
 		if (!memcmp(dev->dev_addr, mac, ETH_ALEN)) {
 			if (vlan && vlan != VLAN_VID_MASK) {
-				grp = p->vlan_grp;
-				dev = NULL;
-				if (grp)
-					dev = vlan_group_get_device(grp, vlan);
+				rcu_read_lock();
+				dev = __vlan_find_dev_deep(dev, vlan);
+				rcu_read_unlock();
 			} else if (netif_is_bond_slave(dev)) {
 				while (dev->master)
 					dev = dev->master;

drivers/net/cxgb3/sge.c

@@ -2028,28 +2028,11 @@ static void rx_eth(struct adapter *adap, struct sge_rspq *rq,
 		skb_checksum_none_assert(skb);
 	skb_record_rx_queue(skb, qs - &adap->sge.qs[pi->first_qset]);
 
-	if (unlikely(p->vlan_valid)) {
-		struct vlan_group *grp = pi->vlan_grp;
-
+	if (p->vlan_valid) {
 		qs->port_stats[SGE_PSTAT_VLANEX]++;
-		if (likely(grp))
-			if (lro)
-				vlan_gro_receive(&qs->napi, grp,
-						 ntohs(p->vlan), skb);
-			else {
-				if (unlikely(pi->iscsic.flags)) {
-					unsigned short vtag = ntohs(p->vlan) &
-								VLAN_VID_MASK;
-					skb->dev = vlan_group_get_device(grp,
-									 vtag);
-					cxgb3_process_iscsi_prov_pack(pi, skb);
-				}
-				__vlan_hwaccel_rx(skb, grp, ntohs(p->vlan),
-					  	  rq->polling);
-			}
-		else
-			dev_kfree_skb_any(skb);
-	} else if (rq->polling) {
+		__vlan_hwaccel_put_tag(skb, ntohs(p->vlan));
+	}
+	if (rq->polling) {
 		if (lro)
 			napi_gro_receive(&qs->napi, skb);
 		else {
@@ -2147,14 +2130,8 @@ static void lro_add_page(struct adapter *adap, struct sge_qset *qs,
 
 	skb_record_rx_queue(skb, qs - &adap->sge.qs[pi->first_qset]);
 
-	if (unlikely(cpl->vlan_valid)) {
-		struct vlan_group *grp = pi->vlan_grp;
-
-		if (likely(grp != NULL)) {
-			vlan_gro_frags(&qs->napi, grp, ntohs(cpl->vlan));
-			return;
-		}
-	}
+	if (cpl->vlan_valid)
+		__vlan_hwaccel_put_tag(skb, ntohs(cpl->vlan));
 	napi_gro_frags(&qs->napi);
 }