/*
- * Copyright (c) 2009, 2010, 2011 Nicira Networks.
- * Distributed under the terms of the GNU GPL version 2.
+ * Copyright (c) 2007-2015 Nicira, Inc.
*
- * Significant portions of this file may be copied from parts of the Linux
- * kernel, by Linus Torvalds and others.
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
*/
#include <linux/hardirq.h>
#include <linux/etherdevice.h>
#include <linux/ethtool.h>
#include <linux/skbuff.h>
-#include <linux/version.h>
+#include <linux/percpu.h>
+#include <linux/u64_stats_sync.h>
+#include <linux/netdev_features.h>
+
+#include <net/dst.h>
+#include <net/xfrm.h>
+#include <net/rtnetlink.h>
-#include "checksum.h"
#include "datapath.h"
-#include "vlan.h"
-#include "vport-generic.h"
#include "vport-internal_dev.h"
#include "vport-netdev.h"
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,1,0)
-#define HAVE_NET_DEVICE_OPS
-#endif
-
struct internal_dev {
struct vport *vport;
- struct net_device_stats stats;
};
-static inline struct internal_dev *internal_dev_priv(struct net_device *netdev)
-{
- return netdev_priv(netdev);
-}
-
-/* This function is only called by the kernel network layer.*/
-static struct net_device_stats *internal_dev_sys_stats(struct net_device *netdev)
-{
- struct vport *vport = internal_dev_get_vport(netdev);
- struct net_device_stats *stats = &internal_dev_priv(netdev)->stats;
-
- if (vport) {
- struct ovs_vport_stats vport_stats;
-
- vport_get_stats(vport, &vport_stats);
-
- /* The tx and rx stats need to be swapped because the switch
- * and host OS have opposite perspectives. */
- stats->rx_packets = vport_stats.tx_packets;
- stats->tx_packets = vport_stats.rx_packets;
- stats->rx_bytes = vport_stats.tx_bytes;
- stats->tx_bytes = vport_stats.rx_bytes;
- stats->rx_errors = vport_stats.tx_errors;
- stats->tx_errors = vport_stats.rx_errors;
- stats->rx_dropped = vport_stats.tx_dropped;
- stats->tx_dropped = vport_stats.rx_dropped;
- }
+static struct vport_ops ovs_internal_vport_ops;
- return stats;
-}
-
-static int internal_dev_mac_addr(struct net_device *dev, void *p)
+static struct internal_dev *internal_dev_priv(struct net_device *netdev)
{
- struct sockaddr *addr = p;
-
- if (!is_valid_ether_addr(addr->sa_data))
- return -EADDRNOTAVAIL;
- memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
- return 0;
+ return netdev_priv(netdev);
}
/* Called with rcu_read_lock_bh. */
static int internal_dev_xmit(struct sk_buff *skb, struct net_device *netdev)
{
- if (unlikely(compute_ip_summed(skb, true))) {
- kfree_skb(skb);
- return 0;
- }
-
- vlan_copy_skb_tci(skb);
- OVS_CB(skb)->flow = NULL;
+ int len, err;
+ len = skb->len;
rcu_read_lock();
- vport_receive(internal_dev_priv(netdev)->vport, skb);
+ err = ovs_vport_receive(internal_dev_priv(netdev)->vport, skb, NULL);
rcu_read_unlock();
+
+ if (likely(!err)) {
+#ifdef HAVE_DEV_TSTATS
+ struct pcpu_sw_netstats *tstats;
+
+ tstats = this_cpu_ptr((struct pcpu_sw_netstats __percpu *)netdev->tstats);
+
+ u64_stats_update_begin(&tstats->syncp);
+ tstats->tx_bytes += len;
+ tstats->tx_packets++;
+ u64_stats_update_end(&tstats->syncp);
+#endif
+ } else {
+ netdev->stats.tx_errors++;
+ }
return 0;
}
static void internal_dev_getinfo(struct net_device *netdev,
struct ethtool_drvinfo *info)
{
- strcpy(info->driver, "openvswitch");
+ strlcpy(info->driver, "openvswitch", sizeof(info->driver));
}
static const struct ethtool_ops internal_dev_ethtool_ops = {
.get_drvinfo = internal_dev_getinfo,
.get_link = ethtool_op_get_link,
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,39)
.get_sg = ethtool_op_get_sg,
.set_sg = ethtool_op_set_sg,
.get_tx_csum = ethtool_op_get_tx_csum,
.set_tx_csum = ethtool_op_set_tx_hw_csum,
.get_tso = ethtool_op_get_tso,
.set_tso = ethtool_op_set_tso,
+#endif
};
static int internal_dev_change_mtu(struct net_device *netdev, int new_mtu)
return 0;
}
-static int internal_dev_do_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
+static void internal_dev_destructor(struct net_device *dev)
{
- if (dp_ioctl_hook)
- return dp_ioctl_hook(dev, ifr, cmd);
+ struct vport *vport = ovs_internal_dev_get_vport(dev);
- return -EOPNOTSUPP;
+ ovs_vport_free(vport);
+ free_netdev(dev);
}
-static void internal_dev_destructor(struct net_device *dev)
+#ifdef HAVE_DEV_TSTATS
+static int internal_dev_init(struct net_device *dev)
{
- struct vport *vport = internal_dev_get_vport(dev);
+ dev->tstats = (typeof(dev->tstats)) netdev_alloc_pcpu_stats(struct pcpu_sw_netstats);
+ if (!dev->tstats)
+ return -ENOMEM;
+ return 0;
+}
- vport_free(vport);
- free_netdev(dev);
+static void internal_dev_uninit(struct net_device *dev)
+{
+ free_percpu(dev->tstats);
}
+#endif
-#ifdef HAVE_NET_DEVICE_OPS
static const struct net_device_ops internal_dev_netdev_ops = {
+#ifdef HAVE_DEV_TSTATS
+ .ndo_init = internal_dev_init,
+ .ndo_uninit = internal_dev_uninit,
+ .ndo_get_stats64 = ip_tunnel_get_stats64,
+#endif
.ndo_open = internal_dev_open,
.ndo_stop = internal_dev_stop,
.ndo_start_xmit = internal_dev_xmit,
- .ndo_set_mac_address = internal_dev_mac_addr,
- .ndo_do_ioctl = internal_dev_do_ioctl,
+ .ndo_set_mac_address = eth_mac_addr,
.ndo_change_mtu = internal_dev_change_mtu,
- .ndo_get_stats = internal_dev_sys_stats,
};
-#endif
+
+static struct rtnl_link_ops internal_dev_link_ops __read_mostly = {
+ .kind = "openvswitch",
+};
static void do_setup(struct net_device *netdev)
{
ether_setup(netdev);
-#ifdef HAVE_NET_DEVICE_OPS
netdev->netdev_ops = &internal_dev_netdev_ops;
-#else
- netdev->do_ioctl = internal_dev_do_ioctl;
- netdev->get_stats = internal_dev_sys_stats;
- netdev->hard_start_xmit = internal_dev_xmit;
- netdev->open = internal_dev_open;
- netdev->stop = internal_dev_stop;
- netdev->set_mac_address = internal_dev_mac_addr;
- netdev->change_mtu = internal_dev_change_mtu;
-#endif
netdev->priv_flags &= ~IFF_TX_SKB_SHARING;
+ netdev->priv_flags |= IFF_LIVE_ADDR_CHANGE | IFF_OPENVSWITCH;
netdev->destructor = internal_dev_destructor;
- SET_ETHTOOL_OPS(netdev, &internal_dev_ethtool_ops);
+ netdev->ethtool_ops = &internal_dev_ethtool_ops;
+ netdev->rtnl_link_ops = &internal_dev_link_ops;
netdev->tx_queue_len = 0;
netdev->features = NETIF_F_LLTX | NETIF_F_SG | NETIF_F_FRAGLIST |
- NETIF_F_HIGHDMA | NETIF_F_HW_CSUM | NETIF_F_TSO;
+ NETIF_F_HIGHDMA | NETIF_F_HW_CSUM |
+ NETIF_F_GSO_SOFTWARE | NETIF_F_GSO_ENCAP_ALL;
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,27)
netdev->vlan_features = netdev->features;
- netdev->features |= NETIF_F_HW_VLAN_TX;
-#endif
+ netdev->features |= NETIF_F_HW_VLAN_CTAG_TX;
- vport_gen_rand_ether_addr(netdev->dev_addr);
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,8,0)
+ netdev->hw_enc_features = netdev->features;
+#endif
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,39)
+ netdev->hw_features = netdev->features & ~NETIF_F_LLTX;
+#endif
+ eth_hw_addr_random(netdev);
}
static struct vport *internal_dev_create(const struct vport_parms *parms)
{
struct vport *vport;
- struct netdev_vport *netdev_vport;
struct internal_dev *internal_dev;
int err;
- vport = vport_alloc(sizeof(struct netdev_vport), &internal_vport_ops, parms);
+ vport = ovs_vport_alloc(0, &ovs_internal_vport_ops, parms);
if (IS_ERR(vport)) {
err = PTR_ERR(vport);
goto error;
}
- netdev_vport = netdev_vport_priv(vport);
-
- netdev_vport->dev = alloc_netdev(sizeof(struct internal_dev), parms->name, do_setup);
- if (!netdev_vport->dev) {
+ vport->dev = alloc_netdev(sizeof(struct internal_dev),
+ parms->name, NET_NAME_UNKNOWN, do_setup);
+ if (!vport->dev) {
err = -ENOMEM;
goto error_free_vport;
}
- internal_dev = internal_dev_priv(netdev_vport->dev);
+ dev_net_set(vport->dev, ovs_dp_get_net(vport->dp));
+ internal_dev = internal_dev_priv(vport->dev);
internal_dev->vport = vport;
- err = register_netdevice(netdev_vport->dev);
+ /* Restrict bridge port to current netns. */
+ if (vport->port_no == OVSP_LOCAL)
+ vport->dev->features |= NETIF_F_NETNS_LOCAL;
+
+ rtnl_lock();
+ err = register_netdevice(vport->dev);
if (err)
goto error_free_netdev;
- dev_set_promiscuity(netdev_vport->dev, 1);
- netif_start_queue(netdev_vport->dev);
+ dev_set_promiscuity(vport->dev, 1);
+ rtnl_unlock();
+ netif_start_queue(vport->dev);
return vport;
error_free_netdev:
- free_netdev(netdev_vport->dev);
+ rtnl_unlock();
+ free_netdev(vport->dev);
error_free_vport:
- vport_free(vport);
+ ovs_vport_free(vport);
error:
return ERR_PTR(err);
}
static void internal_dev_destroy(struct vport *vport)
{
- struct netdev_vport *netdev_vport = netdev_vport_priv(vport);
-
- netif_stop_queue(netdev_vport->dev);
- dev_set_promiscuity(netdev_vport->dev, -1);
+ netif_stop_queue(vport->dev);
+ rtnl_lock();
+ dev_set_promiscuity(vport->dev, -1);
/* unregister_netdevice() waits for an RCU grace period. */
- unregister_netdevice(netdev_vport->dev);
+ unregister_netdevice(vport->dev);
+
+ rtnl_unlock();
}
-static int internal_dev_recv(struct vport *vport, struct sk_buff *skb)
+static netdev_tx_t internal_dev_recv(struct sk_buff *skb)
{
- struct net_device *netdev = netdev_vport_priv(vport)->dev;
- int len;
+ struct net_device *netdev = skb->dev;
+#ifdef HAVE_DEV_TSTATS
+ struct pcpu_sw_netstats *stats;
+#endif
+
+ if (unlikely(!(netdev->flags & IFF_UP))) {
+ kfree_skb(skb);
+ netdev->stats.rx_dropped++;
+ return NETDEV_TX_OK;
+ }
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,37)
- if (unlikely(vlan_deaccel_tag(skb)))
- return 0;
+ if (skb_vlan_tag_present(skb)) {
+ if (unlikely(!vlan_insert_tag_set_proto(skb,
+ skb->vlan_proto,
+ skb_vlan_tag_get(skb))))
+ return NETDEV_TX_OK;
+
+ if (skb->ip_summed == CHECKSUM_COMPLETE)
+ skb->csum = csum_add(skb->csum,
+ csum_partial(skb->data + (2 * ETH_ALEN),
+ VLAN_HLEN, 0));
+
+ vlan_set_tci(skb, 0);
+ }
#endif
- len = skb->len;
- skb->dev = netdev;
+ skb_dst_drop(skb);
+ nf_reset(skb);
+ secpath_reset(skb);
+
skb->pkt_type = PACKET_HOST;
skb->protocol = eth_type_trans(skb, netdev);
- forward_ip_summed(skb, false);
-
- netif_rx(skb);
-
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,29)
- netdev->last_rx = jiffies;
+ skb_postpull_rcsum(skb, eth_hdr(skb), ETH_HLEN);
+
+#ifdef HAVE_DEV_TSTATS
+ stats = this_cpu_ptr((struct pcpu_sw_netstats __percpu *)netdev->tstats);
+ u64_stats_update_begin(&stats->syncp);
+ stats->rx_packets++;
+ stats->rx_bytes += skb->len;
+ u64_stats_update_end(&stats->syncp);
#endif
- return len;
+ netif_rx(skb);
+ return NETDEV_TX_OK;
}
-const struct vport_ops internal_vport_ops = {
+static struct vport_ops ovs_internal_vport_ops = {
.type = OVS_VPORT_TYPE_INTERNAL,
- .flags = VPORT_F_REQUIRED | VPORT_F_FLOW,
.create = internal_dev_create,
.destroy = internal_dev_destroy,
- .set_addr = netdev_set_addr,
- .get_name = netdev_get_name,
- .get_addr = netdev_get_addr,
- .get_kobj = netdev_get_kobj,
- .get_dev_flags = netdev_get_dev_flags,
- .is_running = netdev_is_running,
- .get_operstate = netdev_get_operstate,
- .get_ifindex = netdev_get_ifindex,
- .get_mtu = netdev_get_mtu,
.send = internal_dev_recv,
};
-int is_internal_dev(const struct net_device *netdev)
+int ovs_is_internal_dev(const struct net_device *netdev)
{
-#ifdef HAVE_NET_DEVICE_OPS
return netdev->netdev_ops == &internal_dev_netdev_ops;
-#else
- return netdev->open == internal_dev_open;
-#endif
}
-int is_internal_vport(const struct vport *vport)
+struct vport *ovs_internal_dev_get_vport(struct net_device *netdev)
{
- return vport->ops == &internal_vport_ops;
+ if (!ovs_is_internal_dev(netdev))
+ return NULL;
+
+ return internal_dev_priv(netdev)->vport;
}
-struct vport *internal_dev_get_vport(struct net_device *netdev)
+int ovs_internal_dev_rtnl_link_register(void)
{
- if (!is_internal_dev(netdev))
- return NULL;
+ int err;
- return internal_dev_priv(netdev)->vport;
+ err = rtnl_link_register(&internal_dev_link_ops);
+ if (err < 0)
+ return err;
+
+ err = ovs_vport_ops_register(&ovs_internal_vport_ops);
+ if (err < 0)
+ rtnl_link_unregister(&internal_dev_link_ops);
+
+ return err;
+}
+
+void ovs_internal_dev_rtnl_link_unregister(void)
+{
+ ovs_vport_ops_unregister(&ovs_internal_vport_ops);
+ rtnl_link_unregister(&internal_dev_link_ops);
}
projects / cascardo / ovs.git / blobdiff