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openvswitch: Add support for network namespaces.
Following patch adds support for network namespace to openvswitch. Since it must release devices when namespaces are destroyed, a side effect of this patch is that the module no longer keeps a refcount but instead cleans up any state when it is unloaded. Signed-off-by: Pravin B Shelar <pshelar@nicira.com> Signed-off-by: Jesse Gross <jesse@nicira.com>
This commit is contained in:
Pravin B Shelar
Jesse Gross
parent
0d7614f09c
commit
46df7b8145
@ -49,11 +49,28 @@
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#include <linux/dmi.h>
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#include <linux/workqueue.h>
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#include <net/genetlink.h>
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#include <net/net_namespace.h>
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#include <net/netns/generic.h>
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#include "datapath.h"
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#include "flow.h"
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#include "vport-internal_dev.h"
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/**
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* struct ovs_net - Per net-namespace data for ovs.
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* @dps: List of datapaths to enable dumping them all out.
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* Protected by genl_mutex.
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*/
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struct ovs_net {
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struct list_head dps;
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};
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static int ovs_net_id __read_mostly;
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#define REHASH_FLOW_INTERVAL (10 * 60 * HZ)
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static void rehash_flow_table(struct work_struct *work);
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static DECLARE_DELAYED_WORK(rehash_flow_wq, rehash_flow_table);
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/**
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* DOC: Locking:
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*
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@ -71,29 +88,21 @@
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* each other.
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*/
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/* Global list of datapaths to enable dumping them all out.
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* Protected by genl_mutex.
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*/
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static LIST_HEAD(dps);
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#define REHASH_FLOW_INTERVAL (10 * 60 * HZ)
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static void rehash_flow_table(struct work_struct *work);
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static DECLARE_DELAYED_WORK(rehash_flow_wq, rehash_flow_table);
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static struct vport *new_vport(const struct vport_parms *);
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static int queue_gso_packets(int dp_ifindex, struct sk_buff *,
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static int queue_gso_packets(struct net *, int dp_ifindex, struct sk_buff *,
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const struct dp_upcall_info *);
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static int queue_userspace_packet(int dp_ifindex, struct sk_buff *,
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static int queue_userspace_packet(struct net *, int dp_ifindex,
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struct sk_buff *,
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const struct dp_upcall_info *);
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/* Must be called with rcu_read_lock, genl_mutex, or RTNL lock. */
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static struct datapath *get_dp(int dp_ifindex)
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static struct datapath *get_dp(struct net *net, int dp_ifindex)
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{
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struct datapath *dp = NULL;
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struct net_device *dev;
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rcu_read_lock();
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dev = dev_get_by_index_rcu(&init_net, dp_ifindex);
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dev = dev_get_by_index_rcu(net, dp_ifindex);
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if (dev) {
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struct vport *vport = ovs_internal_dev_get_vport(dev);
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if (vport)
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@ -135,6 +144,7 @@ static void destroy_dp_rcu(struct rcu_head *rcu)
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ovs_flow_tbl_destroy((__force struct flow_table *)dp->table);
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free_percpu(dp->stats_percpu);
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release_net(ovs_dp_get_net(dp));
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kfree(dp);
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}
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@ -220,11 +230,12 @@ static struct genl_family dp_packet_genl_family = {
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.hdrsize = sizeof(struct ovs_header),
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.name = OVS_PACKET_FAMILY,
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.version = OVS_PACKET_VERSION,
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.maxattr = OVS_PACKET_ATTR_MAX
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.maxattr = OVS_PACKET_ATTR_MAX,
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.netnsok = true
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};
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int ovs_dp_upcall(struct datapath *dp, struct sk_buff *skb,
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const struct dp_upcall_info *upcall_info)
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const struct dp_upcall_info *upcall_info)
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{
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struct dp_stats_percpu *stats;
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int dp_ifindex;
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@ -242,9 +253,9 @@ int ovs_dp_upcall(struct datapath *dp, struct sk_buff *skb,
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}
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if (!skb_is_gso(skb))
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err = queue_userspace_packet(dp_ifindex, skb, upcall_info);
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err = queue_userspace_packet(ovs_dp_get_net(dp), dp_ifindex, skb, upcall_info);
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else
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err = queue_gso_packets(dp_ifindex, skb, upcall_info);
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err = queue_gso_packets(ovs_dp_get_net(dp), dp_ifindex, skb, upcall_info);
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if (err)
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goto err;
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@ -260,7 +271,8 @@ err:
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return err;
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}
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static int queue_gso_packets(int dp_ifindex, struct sk_buff *skb,
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static int queue_gso_packets(struct net *net, int dp_ifindex,
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struct sk_buff *skb,
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const struct dp_upcall_info *upcall_info)
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{
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unsigned short gso_type = skb_shinfo(skb)->gso_type;
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@ -276,7 +288,7 @@ static int queue_gso_packets(int dp_ifindex, struct sk_buff *skb,
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/* Queue all of the segments. */
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skb = segs;
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do {
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err = queue_userspace_packet(dp_ifindex, skb, upcall_info);
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err = queue_userspace_packet(net, dp_ifindex, skb, upcall_info);
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if (err)
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break;
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@ -306,7 +318,8 @@ static int queue_gso_packets(int dp_ifindex, struct sk_buff *skb,
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return err;
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}
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static int queue_userspace_packet(int dp_ifindex, struct sk_buff *skb,
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static int queue_userspace_packet(struct net *net, int dp_ifindex,
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struct sk_buff *skb,
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const struct dp_upcall_info *upcall_info)
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{
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struct ovs_header *upcall;
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@ -362,7 +375,7 @@ static int queue_userspace_packet(int dp_ifindex, struct sk_buff *skb,
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skb_copy_and_csum_dev(skb, nla_data(nla));
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err = genlmsg_unicast(&init_net, user_skb, upcall_info->pid);
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err = genlmsg_unicast(net, user_skb, upcall_info->pid);
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out:
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kfree_skb(nskb);
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@ -370,15 +383,10 @@ out:
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}
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/* Called with genl_mutex. */
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static int flush_flows(int dp_ifindex)
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static int flush_flows(struct datapath *dp)
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{
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struct flow_table *old_table;
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struct flow_table *new_table;
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struct datapath *dp;
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dp = get_dp(dp_ifindex);
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if (!dp)
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return -ENODEV;
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old_table = genl_dereference(dp->table);
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new_table = ovs_flow_tbl_alloc(TBL_MIN_BUCKETS);
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@ -668,7 +676,7 @@ static int ovs_packet_cmd_execute(struct sk_buff *skb, struct genl_info *info)
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packet->priority = flow->key.phy.priority;
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rcu_read_lock();
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dp = get_dp(ovs_header->dp_ifindex);
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dp = get_dp(sock_net(skb->sk), ovs_header->dp_ifindex);
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err = -ENODEV;
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if (!dp)
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goto err_unlock;
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@ -742,7 +750,8 @@ static struct genl_family dp_flow_genl_family = {
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.hdrsize = sizeof(struct ovs_header),
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.name = OVS_FLOW_FAMILY,
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.version = OVS_FLOW_VERSION,
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.maxattr = OVS_FLOW_ATTR_MAX
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.maxattr = OVS_FLOW_ATTR_MAX,
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.netnsok = true
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};
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static struct genl_multicast_group ovs_dp_flow_multicast_group = {
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@ -894,7 +903,7 @@ static int ovs_flow_cmd_new_or_set(struct sk_buff *skb, struct genl_info *info)
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goto error;
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}
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dp = get_dp(ovs_header->dp_ifindex);
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dp = get_dp(sock_net(skb->sk), ovs_header->dp_ifindex);
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error = -ENODEV;
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if (!dp)
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goto error;
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@ -995,7 +1004,7 @@ static int ovs_flow_cmd_new_or_set(struct sk_buff *skb, struct genl_info *info)
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ovs_dp_flow_multicast_group.id, info->nlhdr,
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GFP_KERNEL);
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else
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netlink_set_err(init_net.genl_sock, 0,
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netlink_set_err(sock_net(skb->sk)->genl_sock, 0,
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ovs_dp_flow_multicast_group.id, PTR_ERR(reply));
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return 0;
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@ -1023,7 +1032,7 @@ static int ovs_flow_cmd_get(struct sk_buff *skb, struct genl_info *info)
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if (err)
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return err;
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dp = get_dp(ovs_header->dp_ifindex);
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dp = get_dp(sock_net(skb->sk), ovs_header->dp_ifindex);
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if (!dp)
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return -ENODEV;
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@ -1052,16 +1061,17 @@ static int ovs_flow_cmd_del(struct sk_buff *skb, struct genl_info *info)
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int err;
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int key_len;
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dp = get_dp(sock_net(skb->sk), ovs_header->dp_ifindex);
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if (!dp)
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return -ENODEV;
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if (!a[OVS_FLOW_ATTR_KEY])
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return flush_flows(ovs_header->dp_ifindex);
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return flush_flows(dp);
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err = ovs_flow_from_nlattrs(&key, &key_len, a[OVS_FLOW_ATTR_KEY]);
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if (err)
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return err;
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dp = get_dp(ovs_header->dp_ifindex);
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if (!dp)
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return -ENODEV;
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table = genl_dereference(dp->table);
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flow = ovs_flow_tbl_lookup(table, &key, key_len);
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if (!flow)
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@ -1090,7 +1100,7 @@ static int ovs_flow_cmd_dump(struct sk_buff *skb, struct netlink_callback *cb)
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struct datapath *dp;
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struct flow_table *table;
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dp = get_dp(ovs_header->dp_ifindex);
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dp = get_dp(sock_net(skb->sk), ovs_header->dp_ifindex);
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if (!dp)
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return -ENODEV;
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@ -1152,7 +1162,8 @@ static struct genl_family dp_datapath_genl_family = {
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.hdrsize = sizeof(struct ovs_header),
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.name = OVS_DATAPATH_FAMILY,
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.version = OVS_DATAPATH_VERSION,
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.maxattr = OVS_DP_ATTR_MAX
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.maxattr = OVS_DP_ATTR_MAX,
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.netnsok = true
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};
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static struct genl_multicast_group ovs_dp_datapath_multicast_group = {
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@ -1210,18 +1221,19 @@ static struct sk_buff *ovs_dp_cmd_build_info(struct datapath *dp, u32 pid,
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}
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/* Called with genl_mutex and optionally with RTNL lock also. */
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static struct datapath *lookup_datapath(struct ovs_header *ovs_header,
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static struct datapath *lookup_datapath(struct net *net,
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struct ovs_header *ovs_header,
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struct nlattr *a[OVS_DP_ATTR_MAX + 1])
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{
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struct datapath *dp;
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if (!a[OVS_DP_ATTR_NAME])
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dp = get_dp(ovs_header->dp_ifindex);
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dp = get_dp(net, ovs_header->dp_ifindex);
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else {
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struct vport *vport;
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rcu_read_lock();
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vport = ovs_vport_locate(nla_data(a[OVS_DP_ATTR_NAME]));
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vport = ovs_vport_locate(net, nla_data(a[OVS_DP_ATTR_NAME]));
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dp = vport && vport->port_no == OVSP_LOCAL ? vport->dp : NULL;
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rcu_read_unlock();
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}
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@ -1235,6 +1247,7 @@ static int ovs_dp_cmd_new(struct sk_buff *skb, struct genl_info *info)
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struct sk_buff *reply;
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struct datapath *dp;
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struct vport *vport;
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struct ovs_net *ovs_net;
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int err;
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err = -EINVAL;
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@ -1242,15 +1255,14 @@ static int ovs_dp_cmd_new(struct sk_buff *skb, struct genl_info *info)
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goto err;
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rtnl_lock();
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err = -ENODEV;
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if (!try_module_get(THIS_MODULE))
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goto err_unlock_rtnl;
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err = -ENOMEM;
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dp = kzalloc(sizeof(*dp), GFP_KERNEL);
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if (dp == NULL)
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goto err_put_module;
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goto err_unlock_rtnl;
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INIT_LIST_HEAD(&dp->port_list);
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ovs_dp_set_net(dp, hold_net(sock_net(skb->sk)));
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/* Allocate table. */
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err = -ENOMEM;
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@ -1287,7 +1299,8 @@ static int ovs_dp_cmd_new(struct sk_buff *skb, struct genl_info *info)
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if (IS_ERR(reply))
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goto err_destroy_local_port;
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list_add_tail(&dp->list_node, &dps);
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ovs_net = net_generic(ovs_dp_get_net(dp), ovs_net_id);
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list_add_tail(&dp->list_node, &ovs_net->dps);
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rtnl_unlock();
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genl_notify(reply, genl_info_net(info), info->snd_pid,
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@ -1302,34 +1315,20 @@ err_destroy_percpu:
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err_destroy_table:
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ovs_flow_tbl_destroy(genl_dereference(dp->table));
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err_free_dp:
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release_net(ovs_dp_get_net(dp));
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kfree(dp);
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err_put_module:
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module_put(THIS_MODULE);
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err_unlock_rtnl:
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rtnl_unlock();
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err:
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return err;
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}
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static int ovs_dp_cmd_del(struct sk_buff *skb, struct genl_info *info)
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/* Called with genl_mutex. */
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static void __dp_destroy(struct datapath *dp)
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{
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struct vport *vport, *next_vport;
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struct sk_buff *reply;
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struct datapath *dp;
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int err;
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rtnl_lock();
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dp = lookup_datapath(info->userhdr, info->attrs);
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err = PTR_ERR(dp);
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if (IS_ERR(dp))
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goto exit_unlock;
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reply = ovs_dp_cmd_build_info(dp, info->snd_pid,
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info->snd_seq, OVS_DP_CMD_DEL);
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err = PTR_ERR(reply);
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if (IS_ERR(reply))
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goto exit_unlock;
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list_for_each_entry_safe(vport, next_vport, &dp->port_list, node)
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if (vport->port_no != OVSP_LOCAL)
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ovs_dp_detach_port(vport);
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@ -1345,17 +1344,32 @@ static int ovs_dp_cmd_del(struct sk_buff *skb, struct genl_info *info)
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rtnl_unlock();
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call_rcu(&dp->rcu, destroy_dp_rcu);
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module_put(THIS_MODULE);
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}
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static int ovs_dp_cmd_del(struct sk_buff *skb, struct genl_info *info)
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{
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struct sk_buff *reply;
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struct datapath *dp;
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int err;
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dp = lookup_datapath(sock_net(skb->sk), info->userhdr, info->attrs);
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err = PTR_ERR(dp);
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if (IS_ERR(dp))
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return err;
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reply = ovs_dp_cmd_build_info(dp, info->snd_pid,
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info->snd_seq, OVS_DP_CMD_DEL);
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err = PTR_ERR(reply);
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if (IS_ERR(reply))
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return err;
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__dp_destroy(dp);
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genl_notify(reply, genl_info_net(info), info->snd_pid,
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ovs_dp_datapath_multicast_group.id, info->nlhdr,
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GFP_KERNEL);
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return 0;
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exit_unlock:
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rtnl_unlock();
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return err;
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}
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static int ovs_dp_cmd_set(struct sk_buff *skb, struct genl_info *info)
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@ -1364,7 +1378,7 @@ static int ovs_dp_cmd_set(struct sk_buff *skb, struct genl_info *info)
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struct datapath *dp;
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int err;
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dp = lookup_datapath(info->userhdr, info->attrs);
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dp = lookup_datapath(sock_net(skb->sk), info->userhdr, info->attrs);
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if (IS_ERR(dp))
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return PTR_ERR(dp);
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@ -1372,7 +1386,7 @@ static int ovs_dp_cmd_set(struct sk_buff *skb, struct genl_info *info)
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info->snd_seq, OVS_DP_CMD_NEW);
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if (IS_ERR(reply)) {
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err = PTR_ERR(reply);
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netlink_set_err(init_net.genl_sock, 0,
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netlink_set_err(sock_net(skb->sk)->genl_sock, 0,
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ovs_dp_datapath_multicast_group.id, err);
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return 0;
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}
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@ -1389,7 +1403,7 @@ static int ovs_dp_cmd_get(struct sk_buff *skb, struct genl_info *info)
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struct sk_buff *reply;
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struct datapath *dp;
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dp = lookup_datapath(info->userhdr, info->attrs);
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dp = lookup_datapath(sock_net(skb->sk), info->userhdr, info->attrs);
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if (IS_ERR(dp))
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return PTR_ERR(dp);
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@ -1403,11 +1417,12 @@ static int ovs_dp_cmd_get(struct sk_buff *skb, struct genl_info *info)
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static int ovs_dp_cmd_dump(struct sk_buff *skb, struct netlink_callback *cb)
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{
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struct ovs_net *ovs_net = net_generic(sock_net(skb->sk), ovs_net_id);
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struct datapath *dp;
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int skip = cb->args[0];
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int i = 0;
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list_for_each_entry(dp, &dps, list_node) {
|
||||
list_for_each_entry(dp, &ovs_net->dps, list_node) {
|
||||
if (i >= skip &&
|
||||
ovs_dp_cmd_fill_info(dp, skb, NETLINK_CB(cb->skb).pid,
|
||||
cb->nlh->nlmsg_seq, NLM_F_MULTI,
|
||||
@ -1459,7 +1474,8 @@ static struct genl_family dp_vport_genl_family = {
|
||||
.hdrsize = sizeof(struct ovs_header),
|
||||
.name = OVS_VPORT_FAMILY,
|
||||
.version = OVS_VPORT_VERSION,
|
||||
.maxattr = OVS_VPORT_ATTR_MAX
|
||||
.maxattr = OVS_VPORT_ATTR_MAX,
|
||||
.netnsok = true
|
||||
};
|
||||
|
||||
struct genl_multicast_group ovs_dp_vport_multicast_group = {
|
||||
@ -1525,14 +1541,15 @@ struct sk_buff *ovs_vport_cmd_build_info(struct vport *vport, u32 pid,
|
||||
}
|
||||
|
||||
/* Called with RTNL lock or RCU read lock. */
|
||||
static struct vport *lookup_vport(struct ovs_header *ovs_header,
|
||||
static struct vport *lookup_vport(struct net *net,
|
||||
struct ovs_header *ovs_header,
|
||||
struct nlattr *a[OVS_VPORT_ATTR_MAX + 1])
|
||||
{
|
||||
struct datapath *dp;
|
||||
struct vport *vport;
|
||||
|
||||
if (a[OVS_VPORT_ATTR_NAME]) {
|
||||
vport = ovs_vport_locate(nla_data(a[OVS_VPORT_ATTR_NAME]));
|
||||
vport = ovs_vport_locate(net, nla_data(a[OVS_VPORT_ATTR_NAME]));
|
||||
if (!vport)
|
||||
return ERR_PTR(-ENODEV);
|
||||
if (ovs_header->dp_ifindex &&
|
||||
@ -1545,7 +1562,7 @@ static struct vport *lookup_vport(struct ovs_header *ovs_header,
|
||||
if (port_no >= DP_MAX_PORTS)
|
||||
return ERR_PTR(-EFBIG);
|
||||
|
||||
dp = get_dp(ovs_header->dp_ifindex);
|
||||
dp = get_dp(net, ovs_header->dp_ifindex);
|
||||
if (!dp)
|
||||
return ERR_PTR(-ENODEV);
|
||||
|
||||
@ -1574,7 +1591,7 @@ static int ovs_vport_cmd_new(struct sk_buff *skb, struct genl_info *info)
|
||||
goto exit;
|
||||
|
||||
rtnl_lock();
|
||||
dp = get_dp(ovs_header->dp_ifindex);
|
||||
dp = get_dp(sock_net(skb->sk), ovs_header->dp_ifindex);
|
||||
err = -ENODEV;
|
||||
if (!dp)
|
||||
goto exit_unlock;
|
||||
@ -1638,7 +1655,7 @@ static int ovs_vport_cmd_set(struct sk_buff *skb, struct genl_info *info)
|
||||
int err;
|
||||
|
||||
rtnl_lock();
|
||||
vport = lookup_vport(info->userhdr, a);
|
||||
vport = lookup_vport(sock_net(skb->sk), info->userhdr, a);
|
||||
err = PTR_ERR(vport);
|
||||
if (IS_ERR(vport))
|
||||
goto exit_unlock;
|
||||
@ -1658,7 +1675,7 @@ static int ovs_vport_cmd_set(struct sk_buff *skb, struct genl_info *info)
|
||||
reply = ovs_vport_cmd_build_info(vport, info->snd_pid, info->snd_seq,
|
||||
OVS_VPORT_CMD_NEW);
|
||||
if (IS_ERR(reply)) {
|
||||
netlink_set_err(init_net.genl_sock, 0,
|
||||
netlink_set_err(sock_net(skb->sk)->genl_sock, 0,
|
||||
ovs_dp_vport_multicast_group.id, PTR_ERR(reply));
|
||||
goto exit_unlock;
|
||||
}
|
||||
@ -1679,7 +1696,7 @@ static int ovs_vport_cmd_del(struct sk_buff *skb, struct genl_info *info)
|
||||
int err;
|
||||
|
||||
rtnl_lock();
|
||||
vport = lookup_vport(info->userhdr, a);
|
||||
vport = lookup_vport(sock_net(skb->sk), info->userhdr, a);
|
||||
err = PTR_ERR(vport);
|
||||
if (IS_ERR(vport))
|
||||
goto exit_unlock;
|
||||
@ -1714,7 +1731,7 @@ static int ovs_vport_cmd_get(struct sk_buff *skb, struct genl_info *info)
|
||||
int err;
|
||||
|
||||
rcu_read_lock();
|
||||
vport = lookup_vport(ovs_header, a);
|
||||
vport = lookup_vport(sock_net(skb->sk), ovs_header, a);
|
||||
err = PTR_ERR(vport);
|
||||
if (IS_ERR(vport))
|
||||
goto exit_unlock;
|
||||
@ -1741,7 +1758,7 @@ static int ovs_vport_cmd_dump(struct sk_buff *skb, struct netlink_callback *cb)
|
||||
u32 port_no;
|
||||
int retval;
|
||||
|
||||
dp = get_dp(ovs_header->dp_ifindex);
|
||||
dp = get_dp(sock_net(skb->sk), ovs_header->dp_ifindex);
|
||||
if (!dp)
|
||||
return -ENODEV;
|
||||
|
||||
@ -1766,28 +1783,6 @@ static int ovs_vport_cmd_dump(struct sk_buff *skb, struct netlink_callback *cb)
|
||||
return retval;
|
||||
}
|
||||
|
||||
static void rehash_flow_table(struct work_struct *work)
|
||||
{
|
||||
struct datapath *dp;
|
||||
|
||||
genl_lock();
|
||||
|
||||
list_for_each_entry(dp, &dps, list_node) {
|
||||
struct flow_table *old_table = genl_dereference(dp->table);
|
||||
struct flow_table *new_table;
|
||||
|
||||
new_table = ovs_flow_tbl_rehash(old_table);
|
||||
if (!IS_ERR(new_table)) {
|
||||
rcu_assign_pointer(dp->table, new_table);
|
||||
ovs_flow_tbl_deferred_destroy(old_table);
|
||||
}
|
||||
}
|
||||
|
||||
genl_unlock();
|
||||
|
||||
schedule_delayed_work(&rehash_flow_wq, REHASH_FLOW_INTERVAL);
|
||||
}
|
||||
|
||||
static struct genl_ops dp_vport_genl_ops[] = {
|
||||
{ .cmd = OVS_VPORT_CMD_NEW,
|
||||
.flags = GENL_ADMIN_PERM, /* Requires CAP_NET_ADMIN privilege. */
|
||||
@ -1872,6 +1867,59 @@ error:
|
||||
return err;
|
||||
}
|
||||
|
||||
static void rehash_flow_table(struct work_struct *work)
|
||||
{
|
||||
struct datapath *dp;
|
||||
struct net *net;
|
||||
|
||||
genl_lock();
|
||||
rtnl_lock();
|
||||
for_each_net(net) {
|
||||
struct ovs_net *ovs_net = net_generic(net, ovs_net_id);
|
||||
|
||||
list_for_each_entry(dp, &ovs_net->dps, list_node) {
|
||||
struct flow_table *old_table = genl_dereference(dp->table);
|
||||
struct flow_table *new_table;
|
||||
|
||||
new_table = ovs_flow_tbl_rehash(old_table);
|
||||
if (!IS_ERR(new_table)) {
|
||||
rcu_assign_pointer(dp->table, new_table);
|
||||
ovs_flow_tbl_deferred_destroy(old_table);
|
||||
}
|
||||
}
|
||||
}
|
||||
rtnl_unlock();
|
||||
genl_unlock();
|
||||
|
||||
schedule_delayed_work(&rehash_flow_wq, REHASH_FLOW_INTERVAL);
|
||||
}
|
||||
|
||||
static int __net_init ovs_init_net(struct net *net)
|
||||
{
|
||||
struct ovs_net *ovs_net = net_generic(net, ovs_net_id);
|
||||
|
||||
INIT_LIST_HEAD(&ovs_net->dps);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void __net_exit ovs_exit_net(struct net *net)
|
||||
{
|
||||
struct ovs_net *ovs_net = net_generic(net, ovs_net_id);
|
||||
struct datapath *dp, *dp_next;
|
||||
|
||||
genl_lock();
|
||||
list_for_each_entry_safe(dp, dp_next, &ovs_net->dps, list_node)
|
||||
__dp_destroy(dp);
|
||||
genl_unlock();
|
||||
}
|
||||
|
||||
static struct pernet_operations ovs_net_ops = {
|
||||
.init = ovs_init_net,
|
||||
.exit = ovs_exit_net,
|
||||
.id = &ovs_net_id,
|
||||
.size = sizeof(struct ovs_net),
|
||||
};
|
||||
|
||||
static int __init dp_init(void)
|
||||
{
|
||||
struct sk_buff *dummy_skb;
|
||||
@ -1889,10 +1937,14 @@ static int __init dp_init(void)
|
||||
if (err)
|
||||
goto error_flow_exit;
|
||||
|
||||
err = register_netdevice_notifier(&ovs_dp_device_notifier);
|
||||
err = register_pernet_device(&ovs_net_ops);
|
||||
if (err)
|
||||
goto error_vport_exit;
|
||||
|
||||
err = register_netdevice_notifier(&ovs_dp_device_notifier);
|
||||
if (err)
|
||||
goto error_netns_exit;
|
||||
|
||||
err = dp_register_genl();
|
||||
if (err < 0)
|
||||
goto error_unreg_notifier;
|
||||
@ -1903,6 +1955,8 @@ static int __init dp_init(void)
|
||||
|
||||
error_unreg_notifier:
|
||||
unregister_netdevice_notifier(&ovs_dp_device_notifier);
|
||||
error_netns_exit:
|
||||
unregister_pernet_device(&ovs_net_ops);
|
||||
error_vport_exit:
|
||||
ovs_vport_exit();
|
||||
error_flow_exit:
|
||||
@ -1914,9 +1968,10 @@ error:
|
||||
static void dp_cleanup(void)
|
||||
{
|
||||
cancel_delayed_work_sync(&rehash_flow_wq);
|
||||
rcu_barrier();
|
||||
dp_unregister_genl(ARRAY_SIZE(dp_genl_families));
|
||||
unregister_netdevice_notifier(&ovs_dp_device_notifier);
|
||||
unregister_pernet_device(&ovs_net_ops);
|
||||
rcu_barrier();
|
||||
ovs_vport_exit();
|
||||
ovs_flow_exit();
|
||||
}
|
||||
|
||||
@ -27,8 +27,7 @@
|
||||
#include <linux/u64_stats_sync.h>
|
||||
|
||||
#include "flow.h"
|
||||
|
||||
struct vport;
|
||||
#include "vport.h"
|
||||
|
||||
#define DP_MAX_PORTS 1024
|
||||
#define SAMPLE_ACTION_DEPTH 3
|
||||
@ -63,6 +62,7 @@ struct dp_stats_percpu {
|
||||
* @port_list: List of all ports in @ports in arbitrary order. RTNL required
|
||||
* to iterate or modify.
|
||||
* @stats_percpu: Per-CPU datapath statistics.
|
||||
* @net: Reference to net namespace.
|
||||
*
|
||||
* Context: See the comment on locking at the top of datapath.c for additional
|
||||
* locking information.
|
||||
@ -80,6 +80,11 @@ struct datapath {
|
||||
|
||||
/* Stats. */
|
||||
struct dp_stats_percpu __percpu *stats_percpu;
|
||||
|
||||
#ifdef CONFIG_NET_NS
|
||||
/* Network namespace ref. */
|
||||
struct net *net;
|
||||
#endif
|
||||
};
|
||||
|
||||
/**
|
||||
@ -108,6 +113,16 @@ struct dp_upcall_info {
|
||||
u32 pid;
|
||||
};
|
||||
|
||||
static inline struct net *ovs_dp_get_net(struct datapath *dp)
|
||||
{
|
||||
return read_pnet(&dp->net);
|
||||
}
|
||||
|
||||
static inline void ovs_dp_set_net(struct datapath *dp, struct net *net)
|
||||
{
|
||||
write_pnet(&dp->net, net);
|
||||
}
|
||||
|
||||
extern struct notifier_block ovs_dp_device_notifier;
|
||||
extern struct genl_multicast_group ovs_dp_vport_multicast_group;
|
||||
|
||||
|
||||
@ -41,19 +41,21 @@ static int dp_device_event(struct notifier_block *unused, unsigned long event,
|
||||
case NETDEV_UNREGISTER:
|
||||
if (!ovs_is_internal_dev(dev)) {
|
||||
struct sk_buff *notify;
|
||||
struct datapath *dp = vport->dp;
|
||||
|
||||
notify = ovs_vport_cmd_build_info(vport, 0, 0,
|
||||
OVS_VPORT_CMD_DEL);
|
||||
ovs_dp_detach_port(vport);
|
||||
if (IS_ERR(notify)) {
|
||||
netlink_set_err(init_net.genl_sock, 0,
|
||||
netlink_set_err(ovs_dp_get_net(dp)->genl_sock, 0,
|
||||
ovs_dp_vport_multicast_group.id,
|
||||
PTR_ERR(notify));
|
||||
break;
|
||||
}
|
||||
|
||||
genlmsg_multicast(notify, 0, ovs_dp_vport_multicast_group.id,
|
||||
GFP_KERNEL);
|
||||
genlmsg_multicast_netns(ovs_dp_get_net(dp), notify, 0,
|
||||
ovs_dp_vport_multicast_group.id,
|
||||
GFP_KERNEL);
|
||||
}
|
||||
break;
|
||||
}
|
||||
|
||||
@ -144,7 +144,7 @@ static void do_setup(struct net_device *netdev)
|
||||
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_TSO;
|
||||
|
||||
netdev->vlan_features = netdev->features;
|
||||
netdev->features |= NETIF_F_HW_VLAN_TX;
|
||||
@ -175,9 +175,14 @@ static struct vport *internal_dev_create(const struct vport_parms *parms)
|
||||
goto error_free_vport;
|
||||
}
|
||||
|
||||
dev_net_set(netdev_vport->dev, ovs_dp_get_net(vport->dp));
|
||||
internal_dev = internal_dev_priv(netdev_vport->dev);
|
||||
internal_dev->vport = vport;
|
||||
|
||||
/* Restrict bridge port to current netns. */
|
||||
if (vport->port_no == OVSP_LOCAL)
|
||||
netdev_vport->dev->features |= NETIF_F_NETNS_LOCAL;
|
||||
|
||||
err = register_netdevice(netdev_vport->dev);
|
||||
if (err)
|
||||
goto error_free_netdev;
|
||||
|
||||
@ -83,7 +83,7 @@ static struct vport *netdev_create(const struct vport_parms *parms)
|
||||
|
||||
netdev_vport = netdev_vport_priv(vport);
|
||||
|
||||
netdev_vport->dev = dev_get_by_name(&init_net, parms->name);
|
||||
netdev_vport->dev = dev_get_by_name(ovs_dp_get_net(vport->dp), parms->name);
|
||||
if (!netdev_vport->dev) {
|
||||
err = -ENODEV;
|
||||
goto error_free_vport;
|
||||
|
||||
@ -16,10 +16,10 @@
|
||||
* 02110-1301, USA
|
||||
*/
|
||||
|
||||
#include <linux/dcache.h>
|
||||
#include <linux/etherdevice.h>
|
||||
#include <linux/if.h>
|
||||
#include <linux/if_vlan.h>
|
||||
#include <linux/jhash.h>
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/list.h>
|
||||
#include <linux/mutex.h>
|
||||
@ -27,7 +27,9 @@
|
||||
#include <linux/rcupdate.h>
|
||||
#include <linux/rtnetlink.h>
|
||||
#include <linux/compat.h>
|
||||
#include <net/net_namespace.h>
|
||||
|
||||
#include "datapath.h"
|
||||
#include "vport.h"
|
||||
#include "vport-internal_dev.h"
|
||||
|
||||
@ -67,9 +69,9 @@ void ovs_vport_exit(void)
|
||||
kfree(dev_table);
|
||||
}
|
||||
|
||||
static struct hlist_head *hash_bucket(const char *name)
|
||||
static struct hlist_head *hash_bucket(struct net *net, const char *name)
|
||||
{
|
||||
unsigned int hash = full_name_hash(name, strlen(name));
|
||||
unsigned int hash = jhash(name, strlen(name), (unsigned long) net);
|
||||
return &dev_table[hash & (VPORT_HASH_BUCKETS - 1)];
|
||||
}
|
||||
|
||||
@ -80,14 +82,15 @@ static struct hlist_head *hash_bucket(const char *name)
|
||||
*
|
||||
* Must be called with RTNL or RCU read lock.
|
||||
*/
|
||||
struct vport *ovs_vport_locate(const char *name)
|
||||
struct vport *ovs_vport_locate(struct net *net, const char *name)
|
||||
{
|
||||
struct hlist_head *bucket = hash_bucket(name);
|
||||
struct hlist_head *bucket = hash_bucket(net, name);
|
||||
struct vport *vport;
|
||||
struct hlist_node *node;
|
||||
|
||||
hlist_for_each_entry_rcu(vport, node, bucket, hash_node)
|
||||
if (!strcmp(name, vport->ops->get_name(vport)))
|
||||
if (!strcmp(name, vport->ops->get_name(vport)) &&
|
||||
net_eq(ovs_dp_get_net(vport->dp), net))
|
||||
return vport;
|
||||
|
||||
return NULL;
|
||||
@ -170,14 +173,17 @@ struct vport *ovs_vport_add(const struct vport_parms *parms)
|
||||
|
||||
for (i = 0; i < ARRAY_SIZE(vport_ops_list); i++) {
|
||||
if (vport_ops_list[i]->type == parms->type) {
|
||||
struct hlist_head *bucket;
|
||||
|
||||
vport = vport_ops_list[i]->create(parms);
|
||||
if (IS_ERR(vport)) {
|
||||
err = PTR_ERR(vport);
|
||||
goto out;
|
||||
}
|
||||
|
||||
hlist_add_head_rcu(&vport->hash_node,
|
||||
hash_bucket(vport->ops->get_name(vport)));
|
||||
bucket = hash_bucket(ovs_dp_get_net(vport->dp),
|
||||
vport->ops->get_name(vport));
|
||||
hlist_add_head_rcu(&vport->hash_node, bucket);
|
||||
return vport;
|
||||
}
|
||||
}
|
||||
|
||||
@ -20,6 +20,7 @@
|
||||
#define VPORT_H 1
|
||||
|
||||
#include <linux/list.h>
|
||||
#include <linux/netlink.h>
|
||||
#include <linux/openvswitch.h>
|
||||
#include <linux/skbuff.h>
|
||||
#include <linux/spinlock.h>
|
||||
@ -38,7 +39,7 @@ void ovs_vport_exit(void);
|
||||
struct vport *ovs_vport_add(const struct vport_parms *);
|
||||
void ovs_vport_del(struct vport *);
|
||||
|
||||
struct vport *ovs_vport_locate(const char *name);
|
||||
struct vport *ovs_vport_locate(struct net *net, const char *name);
|
||||
|
||||
void ovs_vport_get_stats(struct vport *, struct ovs_vport_stats *);
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user