X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=drivers%2Fnet%2Fethernet%2Fintel%2Ffm10k%2Ffm10k_netdev.c;h=b57ea1c09a21aacec533a10547a20acf6616f995;hb=13cb2dad45cc8c8e350abc84de38449b89629c3c;hp=2cda9f99edc38f9d5906d3f2e4695ffc8b903203;hpb=aa3ac822689f5c4d8961a8707edba9b6bf4631a3;p=deliverable%2Flinux.git

diff --git a/drivers/net/ethernet/intel/fm10k/fm10k_netdev.c b/drivers/net/ethernet/intel/fm10k/fm10k_netdev.c
index 2cda9f99edc3..b57ea1c09a21 100644
--- a/drivers/net/ethernet/intel/fm10k/fm10k_netdev.c
+++ b/drivers/net/ethernet/intel/fm10k/fm10k_netdev.c
@@ -20,6 +20,9 @@
 
 #include "fm10k.h"
 #include <linux/vmalloc.h>
+#if IS_ENABLED(CONFIG_VXLAN)
+#include <net/vxlan.h>
+#endif /* CONFIG_VXLAN */
 
 /**
  * fm10k_setup_tx_resources - allocate Tx resources (Descriptors)
@@ -240,6 +243,9 @@ void fm10k_clean_all_tx_rings(struct fm10k_intfc *interface)
 
 	for (i = 0; i < interface->num_tx_queues; i++)
 		fm10k_clean_tx_ring(interface->tx_ring[i]);
+
+	/* remove any stale timestamp buffers and free them */
+	skb_queue_purge(&interface->ts_tx_skb_queue);
 }
 
 /**
@@ -365,7 +371,143 @@ static void fm10k_request_glort_range(struct fm10k_intfc *interface)
 	if (hw->mac.dglort_map == FM10K_DGLORTMAP_NONE)
 		return;
 
-	interface->glort_count = mask + 1;
+	/* we support 3 possible GLORT configurations.
+	 * 1: VFs consume all but the last 1
+	 * 2: VFs and PF split glorts with possible gap between
+	 * 3: VFs allocated first 64, all others belong to PF
+	 */
+	if (mask <= hw->iov.total_vfs) {
+		interface->glort_count = 1;
+		interface->glort += mask;
+	} else if (mask < 64) {
+		interface->glort_count = (mask + 1) / 2;
+		interface->glort += interface->glort_count;
+	} else {
+		interface->glort_count = mask - 63;
+		interface->glort += 64;
+	}
+}
+
+/**
+ * fm10k_del_vxlan_port_all
+ * @interface: board private structure
+ *
+ * This function frees the entire vxlan_port list
+ **/
+static void fm10k_del_vxlan_port_all(struct fm10k_intfc *interface)
+{
+	struct fm10k_vxlan_port *vxlan_port;
+
+	/* flush all entries from list */
+	vxlan_port = list_first_entry_or_null(&interface->vxlan_port,
+					      struct fm10k_vxlan_port, list);
+	while (vxlan_port) {
+		list_del(&vxlan_port->list);
+		kfree(vxlan_port);
+		vxlan_port = list_first_entry_or_null(&interface->vxlan_port,
+						      struct fm10k_vxlan_port,
+						      list);
+	}
+}
+
+/**
+ * fm10k_restore_vxlan_port
+ * @interface: board private structure
+ *
+ * This function restores the value in the tunnel_cfg register after reset
+ **/
+static void fm10k_restore_vxlan_port(struct fm10k_intfc *interface)
+{
+	struct fm10k_hw *hw = &interface->hw;
+	struct fm10k_vxlan_port *vxlan_port;
+
+	/* only the PF supports configuring tunnels */
+	if (hw->mac.type != fm10k_mac_pf)
+		return;
+
+	vxlan_port = list_first_entry_or_null(&interface->vxlan_port,
+					      struct fm10k_vxlan_port, list);
+
+	/* restore tunnel configuration register */
+	fm10k_write_reg(hw, FM10K_TUNNEL_CFG,
+			(vxlan_port ? ntohs(vxlan_port->port) : 0) |
+			(ETH_P_TEB << FM10K_TUNNEL_CFG_NVGRE_SHIFT));
+}
+
+/**
+ * fm10k_add_vxlan_port
+ * @netdev: network interface device structure
+ * @sa_family: Address family of new port
+ * @port: port number used for VXLAN
+ *
+ * This funciton is called when a new VXLAN interface has added a new port
+ * number to the range that is currently in use for VXLAN.  The new port
+ * number is always added to the tail so that the port number list should
+ * match the order in which the ports were allocated.  The head of the list
+ * is always used as the VXLAN port number for offloads.
+ **/
+static void fm10k_add_vxlan_port(struct net_device *dev,
+				 sa_family_t sa_family, __be16 port) {
+	struct fm10k_intfc *interface = netdev_priv(dev);
+	struct fm10k_vxlan_port *vxlan_port;
+
+	/* only the PF supports configuring tunnels */
+	if (interface->hw.mac.type != fm10k_mac_pf)
+		return;
+
+	/* existing ports are pulled out so our new entry is always last */
+	fm10k_vxlan_port_for_each(vxlan_port, interface) {
+		if ((vxlan_port->port == port) &&
+		    (vxlan_port->sa_family == sa_family)) {
+			list_del(&vxlan_port->list);
+			goto insert_tail;
+		}
+	}
+
+	/* allocate memory to track ports */
+	vxlan_port = kmalloc(sizeof(*vxlan_port), GFP_ATOMIC);
+	if (!vxlan_port)
+		return;
+	vxlan_port->port = port;
+	vxlan_port->sa_family = sa_family;
+
+insert_tail:
+	/* add new port value to list */
+	list_add_tail(&vxlan_port->list, &interface->vxlan_port);
+
+	fm10k_restore_vxlan_port(interface);
+}
+
+/**
+ * fm10k_del_vxlan_port
+ * @netdev: network interface device structure
+ * @sa_family: Address family of freed port
+ * @port: port number used for VXLAN
+ *
+ * This funciton is called when a new VXLAN interface has freed a port
+ * number from the range that is currently in use for VXLAN.  The freed
+ * port is removed from the list and the new head is used to determine
+ * the port number for offloads.
+ **/
+static void fm10k_del_vxlan_port(struct net_device *dev,
+				 sa_family_t sa_family, __be16 port) {
+	struct fm10k_intfc *interface = netdev_priv(dev);
+	struct fm10k_vxlan_port *vxlan_port;
+
+	if (interface->hw.mac.type != fm10k_mac_pf)
+		return;
+
+	/* find the port in the list and free it */
+	fm10k_vxlan_port_for_each(vxlan_port, interface) {
+		if ((vxlan_port->port == port) &&
+		    (vxlan_port->sa_family == sa_family)) {
+			list_del(&vxlan_port->list);
+			kfree(vxlan_port);
+			break;
+		}
+	}
+
+	fm10k_restore_vxlan_port(interface);
 }
 
 /**
@@ -404,12 +546,21 @@ int fm10k_open(struct net_device *netdev)
 	fm10k_request_glort_range(interface);
 
 	/* Notify the stack of the actual queue counts */
+	err = netif_set_real_num_tx_queues(netdev,
+					   interface->num_tx_queues);
+	if (err)
+		goto err_set_queues;
 
 	err = netif_set_real_num_rx_queues(netdev,
 					   interface->num_rx_queues);
 	if (err)
 		goto err_set_queues;
 
+#if IS_ENABLED(CONFIG_VXLAN)
+	/* update VXLAN port configuration */
+	vxlan_get_rx_port(netdev);
+
+#endif
 	fm10k_up(interface);
 
 	return 0;
@@ -443,6 +594,8 @@ int fm10k_close(struct net_device *netdev)
 
 	fm10k_qv_free_irq(interface);
 
+	fm10k_del_vxlan_port_all(interface);
+
 	fm10k_free_all_tx_resources(interface);
 	fm10k_free_all_rx_resources(interface);
 
@@ -452,7 +605,7 @@ int fm10k_close(struct net_device *netdev)
 static netdev_tx_t fm10k_xmit_frame(struct sk_buff *skb, struct net_device *dev)
 {
 	struct fm10k_intfc *interface = netdev_priv(dev);
-	unsigned int r_idx = 0;
+	unsigned int r_idx = skb->queue_mapping;
 	int err;
 
 	if ((skb->protocol ==  htons(ETH_P_8021Q)) &&
@@ -505,6 +658,10 @@ static netdev_tx_t fm10k_xmit_frame(struct sk_buff *skb, struct net_device *dev)
 		__skb_put(skb, pad_len);
 	}
 
+	/* prepare packet for hardware time stamping */
+	if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP))
+		fm10k_ts_tx_enqueue(interface, skb);
+
 	if (r_idx >= interface->num_tx_queues)
 		r_idx %= interface->num_tx_queues;
 
@@ -628,14 +785,14 @@ static int fm10k_update_vid(struct net_device *netdev, u16 vid, bool set)
 	if (!(netdev->flags & IFF_PROMISC)) {
 		err = hw->mac.ops.update_vlan(hw, vid, 0, set);
 		if (err)
-			return err;
+			goto err_out;
 	}
 
 	/* update our base MAC address */
 	err = hw->mac.ops.update_uc_addr(hw, interface->glort, hw->mac.addr,
 					 vid, set, 0);
 	if (err)
-		return err;
+		goto err_out;
 
 	/* set vid prior to syncing/unsyncing the VLAN */
 	interface->vid = vid + (set ? VLAN_N_VID : 0);
@@ -644,9 +801,10 @@ static int fm10k_update_vid(struct net_device *netdev, u16 vid, bool set)
 	__dev_uc_unsync(netdev, fm10k_uc_vlan_unsync);
 	__dev_mc_unsync(netdev, fm10k_mc_vlan_unsync);
 
+err_out:
 	fm10k_mbx_unlock(interface);
 
-	return 0;
+	return err;
 }
 
 static int fm10k_vlan_rx_add_vid(struct net_device *netdev,
@@ -844,6 +1002,21 @@ void fm10k_restore_rx_state(struct fm10k_intfc *interface)
 	int xcast_mode;
 	u16 vid, glort;
 
+	/* restore our address if perm_addr is set */
+	if (hw->mac.type == fm10k_mac_vf) {
+		if (is_valid_ether_addr(hw->mac.perm_addr)) {
+			ether_addr_copy(hw->mac.addr, hw->mac.perm_addr);
+			ether_addr_copy(netdev->perm_addr, hw->mac.perm_addr);
+			ether_addr_copy(netdev->dev_addr, hw->mac.perm_addr);
+			netdev->addr_assign_type &= ~NET_ADDR_RANDOM;
+		}
+
+		if (hw->mac.vlan_override)
+			netdev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
+		else
+			netdev->features |= NETIF_F_HW_VLAN_CTAG_RX;
+	}
+
 	/* record glort for this interface */
 	glort = interface->glort;
 
@@ -892,6 +1065,9 @@ void fm10k_restore_rx_state(struct fm10k_intfc *interface)
 
 	/* record updated xcast mode state */
 	interface->xcast_mode = xcast_mode;
+
+	/* Restore tunnel configuration */
+	fm10k_restore_vxlan_port(interface);
 }
 
 void fm10k_reset_rx_state(struct fm10k_intfc *interface)
@@ -1013,6 +1189,167 @@ int fm10k_setup_tc(struct net_device *dev, u8 tc)
 	return 0;
 }
 
+static int fm10k_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
+{
+	switch (cmd) {
+	case SIOCGHWTSTAMP:
+		return fm10k_get_ts_config(netdev, ifr);
+	case SIOCSHWTSTAMP:
+		return fm10k_set_ts_config(netdev, ifr);
+	default:
+		return -EOPNOTSUPP;
+	}
+}
+
+static void fm10k_assign_l2_accel(struct fm10k_intfc *interface,
+				  struct fm10k_l2_accel *l2_accel)
+{
+	struct fm10k_ring *ring;
+	int i;
+
+	for (i = 0; i < interface->num_rx_queues; i++) {
+		ring = interface->rx_ring[i];
+		rcu_assign_pointer(ring->l2_accel, l2_accel);
+	}
+
+	interface->l2_accel = l2_accel;
+}
+
+static void *fm10k_dfwd_add_station(struct net_device *dev,
+				    struct net_device *sdev)
+{
+	struct fm10k_intfc *interface = netdev_priv(dev);
+	struct fm10k_l2_accel *l2_accel = interface->l2_accel;
+	struct fm10k_l2_accel *old_l2_accel = NULL;
+	struct fm10k_dglort_cfg dglort = { 0 };
+	struct fm10k_hw *hw = &interface->hw;
+	int size = 0, i;
+	u16 glort;
+
+	/* allocate l2 accel structure if it is not available */
+	if (!l2_accel) {
+		/* verify there is enough free GLORTs to support l2_accel */
+		if (interface->glort_count < 7)
+			return ERR_PTR(-EBUSY);
+
+		size = offsetof(struct fm10k_l2_accel, macvlan[7]);
+		l2_accel = kzalloc(size, GFP_KERNEL);
+		if (!l2_accel)
+			return ERR_PTR(-ENOMEM);
+
+		l2_accel->size = 7;
+		l2_accel->dglort = interface->glort;
+
+		/* update pointers */
+		fm10k_assign_l2_accel(interface, l2_accel);
+	/* do not expand if we are at our limit */
+	} else if ((l2_accel->count == FM10K_MAX_STATIONS) ||
+		   (l2_accel->count == (interface->glort_count - 1))) {
+		return ERR_PTR(-EBUSY);
+	/* expand if we have hit the size limit */
+	} else if (l2_accel->count == l2_accel->size) {
+		old_l2_accel = l2_accel;
+		size = offsetof(struct fm10k_l2_accel,
+				macvlan[(l2_accel->size * 2) + 1]);
+		l2_accel = kzalloc(size, GFP_KERNEL);
+		if (!l2_accel)
+			return ERR_PTR(-ENOMEM);
+
+		memcpy(l2_accel, old_l2_accel,
+		       offsetof(struct fm10k_l2_accel,
+				macvlan[old_l2_accel->size]));
+
+		l2_accel->size = (old_l2_accel->size * 2) + 1;
+
+		/* update pointers */
+		fm10k_assign_l2_accel(interface, l2_accel);
+		kfree_rcu(old_l2_accel, rcu);
+	}
+
+	/* add macvlan to accel table, and record GLORT for position */
+	for (i = 0; i < l2_accel->size; i++) {
+		if (!l2_accel->macvlan[i])
+			break;
+	}
+
+	/* record station */
+	l2_accel->macvlan[i] = sdev;
+	l2_accel->count++;
+
+	/* configure default DGLORT mapping for RSS/DCB */
+	dglort.idx = fm10k_dglort_pf_rss;
+	dglort.inner_rss = 1;
+	dglort.rss_l = fls(interface->ring_feature[RING_F_RSS].mask);
+	dglort.pc_l = fls(interface->ring_feature[RING_F_QOS].mask);
+	dglort.glort = interface->glort;
+	dglort.shared_l = fls(l2_accel->size);
+	hw->mac.ops.configure_dglort_map(hw, &dglort);
+
+	/* Add rules for this specific dglort to the switch */
+	fm10k_mbx_lock(interface);
+
+	glort = l2_accel->dglort + 1 + i;
+	hw->mac.ops.update_xcast_mode(hw, glort, FM10K_XCAST_MODE_MULTI);
+	hw->mac.ops.update_uc_addr(hw, glort, sdev->dev_addr, 0, true, 0);
+
+	fm10k_mbx_unlock(interface);
+
+	return sdev;
+}
+
+static void fm10k_dfwd_del_station(struct net_device *dev, void *priv)
+{
+	struct fm10k_intfc *interface = netdev_priv(dev);
+	struct fm10k_l2_accel *l2_accel = ACCESS_ONCE(interface->l2_accel);
+	struct fm10k_dglort_cfg dglort = { 0 };
+	struct fm10k_hw *hw = &interface->hw;
+	struct net_device *sdev = priv;
+	int i;
+	u16 glort;
+
+	if (!l2_accel)
+		return;
+
+	/* search table for matching interface */
+	for (i = 0; i < l2_accel->size; i++) {
+		if (l2_accel->macvlan[i] == sdev)
+			break;
+	}
+
+	/* exit if macvlan not found */
+	if (i == l2_accel->size)
+		return;
+
+	/* Remove any rules specific to this dglort */
+	fm10k_mbx_lock(interface);
+
+	glort = l2_accel->dglort + 1 + i;
+	hw->mac.ops.update_xcast_mode(hw, glort, FM10K_XCAST_MODE_NONE);
+	hw->mac.ops.update_uc_addr(hw, glort, sdev->dev_addr, 0, false, 0);
+
+	fm10k_mbx_unlock(interface);
+
+	/* record removal */
+	l2_accel->macvlan[i] = NULL;
+	l2_accel->count--;
+
+	/* configure default DGLORT mapping for RSS/DCB */
+	dglort.idx = fm10k_dglort_pf_rss;
+	dglort.inner_rss = 1;
+	dglort.rss_l = fls(interface->ring_feature[RING_F_RSS].mask);
+	dglort.pc_l = fls(interface->ring_feature[RING_F_QOS].mask);
+	dglort.glort = interface->glort;
+	if (l2_accel)
+		dglort.shared_l = fls(l2_accel->size);
+	hw->mac.ops.configure_dglort_map(hw, &dglort);
+
+	/* If table is empty remove it */
+	if (l2_accel->count == 0) {
+		fm10k_assign_l2_accel(interface, NULL);
+		kfree_rcu(l2_accel, rcu);
+	}
+}
+
 static const struct net_device_ops fm10k_netdev_ops = {
 	.ndo_open		= fm10k_open,
 	.ndo_stop		= fm10k_close,
@@ -1026,6 +1363,15 @@ static const struct net_device_ops fm10k_netdev_ops = {
 	.ndo_set_rx_mode	= fm10k_set_rx_mode,
 	.ndo_get_stats64	= fm10k_get_stats64,
 	.ndo_setup_tc		= fm10k_setup_tc,
+	.ndo_set_vf_mac		= fm10k_ndo_set_vf_mac,
+	.ndo_set_vf_vlan	= fm10k_ndo_set_vf_vlan,
+	.ndo_set_vf_rate	= fm10k_ndo_set_vf_bw,
+	.ndo_get_vf_config	= fm10k_ndo_get_vf_config,
+	.ndo_add_vxlan_port	= fm10k_add_vxlan_port,
+	.ndo_del_vxlan_port	= fm10k_del_vxlan_port,
+	.ndo_do_ioctl		= fm10k_ioctl,
+	.ndo_dfwd_add_station	= fm10k_dfwd_add_station,
+	.ndo_dfwd_del_station	= fm10k_dfwd_del_station,
 };
 
 #define DEFAULT_DEBUG_LEVEL_SHIFT 3
@@ -1048,16 +1394,33 @@ struct net_device *fm10k_alloc_netdev(void)
 	interface->msg_enable = (1 << DEFAULT_DEBUG_LEVEL_SHIFT) - 1;
 
 	/* configure default features */
-	dev->features |= NETIF_F_SG;
+	dev->features |= NETIF_F_IP_CSUM |
+			 NETIF_F_IPV6_CSUM |
+			 NETIF_F_SG |
+			 NETIF_F_TSO |
+			 NETIF_F_TSO6 |
+			 NETIF_F_TSO_ECN |
+			 NETIF_F_GSO_UDP_TUNNEL |
+			 NETIF_F_RXHASH |
+			 NETIF_F_RXCSUM;
 
 	/* all features defined to this point should be changeable */
 	dev->hw_features |= dev->features;
 
+	/* allow user to enable L2 forwarding acceleration */
+	dev->hw_features |= NETIF_F_HW_L2FW_DOFFLOAD;
+
 	/* configure VLAN features */
 	dev->vlan_features |= dev->features;
 
 	/* configure tunnel offloads */
-	dev->hw_enc_features = NETIF_F_SG;
+	dev->hw_enc_features = NETIF_F_IP_CSUM |
+			       NETIF_F_TSO |
+			       NETIF_F_TSO6 |
+			       NETIF_F_TSO_ECN |
+			       NETIF_F_GSO_UDP_TUNNEL |
+			       NETIF_F_IPV6_CSUM |
+			       NETIF_F_SG;
 
 	/* we want to leave these both on as we cannot disable VLAN tag
 	 * insertion or stripping on the hardware since it is contained