From 46df7b814548849deee01f50bc75f8f5ae8cd767 Mon Sep 17 00:00:00 2001 From: Pravin B Shelar Date: Wed, 22 Feb 2012 19:58:59 -0800 Subject: [PATCH] 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 Signed-off-by: Jesse Gross --- net/openvswitch/datapath.c | 269 ++++++++++++++++----------- net/openvswitch/datapath.h | 19 +- net/openvswitch/dp_notify.c | 8 +- net/openvswitch/vport-internal_dev.c | 7 +- net/openvswitch/vport-netdev.c | 2 +- net/openvswitch/vport.c | 22 ++- net/openvswitch/vport.h | 3 +- 7 files changed, 207 insertions(+), 123 deletions(-) diff --git a/net/openvswitch/datapath.c b/net/openvswitch/datapath.c index d8277d29e71..cad39fca75a 100644 --- a/net/openvswitch/datapath.c +++ b/net/openvswitch/datapath.c @@ -49,11 +49,28 @@ #include #include #include +#include +#include #include "datapath.h" #include "flow.h" #include "vport-internal_dev.h" +/** + * struct ovs_net - Per net-namespace data for ovs. + * @dps: List of datapaths to enable dumping them all out. + * Protected by genl_mutex. + */ +struct ovs_net { + struct list_head dps; +}; + +static int ovs_net_id __read_mostly; + +#define REHASH_FLOW_INTERVAL (10 * 60 * HZ) +static void rehash_flow_table(struct work_struct *work); +static DECLARE_DELAYED_WORK(rehash_flow_wq, rehash_flow_table); + /** * DOC: Locking: * @@ -71,29 +88,21 @@ * each other. */ -/* Global list of datapaths to enable dumping them all out. - * Protected by genl_mutex. - */ -static LIST_HEAD(dps); - -#define REHASH_FLOW_INTERVAL (10 * 60 * HZ) -static void rehash_flow_table(struct work_struct *work); -static DECLARE_DELAYED_WORK(rehash_flow_wq, rehash_flow_table); - static struct vport *new_vport(const struct vport_parms *); -static int queue_gso_packets(int dp_ifindex, struct sk_buff *, +static int queue_gso_packets(struct net *, int dp_ifindex, struct sk_buff *, const struct dp_upcall_info *); -static int queue_userspace_packet(int dp_ifindex, struct sk_buff *, +static int queue_userspace_packet(struct net *, int dp_ifindex, + struct sk_buff *, const struct dp_upcall_info *); /* Must be called with rcu_read_lock, genl_mutex, or RTNL lock. */ -static struct datapath *get_dp(int dp_ifindex) +static struct datapath *get_dp(struct net *net, int dp_ifindex) { struct datapath *dp = NULL; struct net_device *dev; rcu_read_lock(); - dev = dev_get_by_index_rcu(&init_net, dp_ifindex); + dev = dev_get_by_index_rcu(net, dp_ifindex); if (dev) { struct vport *vport = ovs_internal_dev_get_vport(dev); if (vport) @@ -135,6 +144,7 @@ static void destroy_dp_rcu(struct rcu_head *rcu) ovs_flow_tbl_destroy((__force struct flow_table *)dp->table); free_percpu(dp->stats_percpu); + release_net(ovs_dp_get_net(dp)); kfree(dp); } @@ -220,11 +230,12 @@ static struct genl_family dp_packet_genl_family = { .hdrsize = sizeof(struct ovs_header), .name = OVS_PACKET_FAMILY, .version = OVS_PACKET_VERSION, - .maxattr = OVS_PACKET_ATTR_MAX + .maxattr = OVS_PACKET_ATTR_MAX, + .netnsok = true }; int ovs_dp_upcall(struct datapath *dp, struct sk_buff *skb, - const struct dp_upcall_info *upcall_info) + const struct dp_upcall_info *upcall_info) { struct dp_stats_percpu *stats; int dp_ifindex; @@ -242,9 +253,9 @@ int ovs_dp_upcall(struct datapath *dp, struct sk_buff *skb, } if (!skb_is_gso(skb)) - err = queue_userspace_packet(dp_ifindex, skb, upcall_info); + err = queue_userspace_packet(ovs_dp_get_net(dp), dp_ifindex, skb, upcall_info); else - err = queue_gso_packets(dp_ifindex, skb, upcall_info); + err = queue_gso_packets(ovs_dp_get_net(dp), dp_ifindex, skb, upcall_info); if (err) goto err; @@ -260,7 +271,8 @@ err: return err; } -static int queue_gso_packets(int dp_ifindex, struct sk_buff *skb, +static int queue_gso_packets(struct net *net, int dp_ifindex, + struct sk_buff *skb, const struct dp_upcall_info *upcall_info) { unsigned short gso_type = skb_shinfo(skb)->gso_type; @@ -276,7 +288,7 @@ static int queue_gso_packets(int dp_ifindex, struct sk_buff *skb, /* Queue all of the segments. */ skb = segs; do { - err = queue_userspace_packet(dp_ifindex, skb, upcall_info); + err = queue_userspace_packet(net, dp_ifindex, skb, upcall_info); if (err) break; @@ -306,7 +318,8 @@ static int queue_gso_packets(int dp_ifindex, struct sk_buff *skb, return err; } -static int queue_userspace_packet(int dp_ifindex, struct sk_buff *skb, +static int queue_userspace_packet(struct net *net, int dp_ifindex, + struct sk_buff *skb, const struct dp_upcall_info *upcall_info) { struct ovs_header *upcall; @@ -362,7 +375,7 @@ static int queue_userspace_packet(int dp_ifindex, struct sk_buff *skb, skb_copy_and_csum_dev(skb, nla_data(nla)); - err = genlmsg_unicast(&init_net, user_skb, upcall_info->pid); + err = genlmsg_unicast(net, user_skb, upcall_info->pid); out: kfree_skb(nskb); @@ -370,15 +383,10 @@ out: } /* Called with genl_mutex. */ -static int flush_flows(int dp_ifindex) +static int flush_flows(struct datapath *dp) { struct flow_table *old_table; struct flow_table *new_table; - struct datapath *dp; - - dp = get_dp(dp_ifindex); - if (!dp) - return -ENODEV; old_table = genl_dereference(dp->table); new_table = ovs_flow_tbl_alloc(TBL_MIN_BUCKETS); @@ -668,7 +676,7 @@ static int ovs_packet_cmd_execute(struct sk_buff *skb, struct genl_info *info) packet->priority = flow->key.phy.priority; rcu_read_lock(); - dp = get_dp(ovs_header->dp_ifindex); + dp = get_dp(sock_net(skb->sk), ovs_header->dp_ifindex); err = -ENODEV; if (!dp) goto err_unlock; @@ -742,7 +750,8 @@ static struct genl_family dp_flow_genl_family = { .hdrsize = sizeof(struct ovs_header), .name = OVS_FLOW_FAMILY, .version = OVS_FLOW_VERSION, - .maxattr = OVS_FLOW_ATTR_MAX + .maxattr = OVS_FLOW_ATTR_MAX, + .netnsok = true }; static struct genl_multicast_group ovs_dp_flow_multicast_group = { @@ -894,7 +903,7 @@ static int ovs_flow_cmd_new_or_set(struct sk_buff *skb, struct genl_info *info) goto error; } - dp = get_dp(ovs_header->dp_ifindex); + dp = get_dp(sock_net(skb->sk), ovs_header->dp_ifindex); error = -ENODEV; if (!dp) goto error; @@ -995,7 +1004,7 @@ static int ovs_flow_cmd_new_or_set(struct sk_buff *skb, struct genl_info *info) ovs_dp_flow_multicast_group.id, info->nlhdr, GFP_KERNEL); else - netlink_set_err(init_net.genl_sock, 0, + netlink_set_err(sock_net(skb->sk)->genl_sock, 0, ovs_dp_flow_multicast_group.id, PTR_ERR(reply)); return 0; @@ -1023,7 +1032,7 @@ static int ovs_flow_cmd_get(struct sk_buff *skb, struct genl_info *info) if (err) return err; - dp = get_dp(ovs_header->dp_ifindex); + dp = get_dp(sock_net(skb->sk), ovs_header->dp_ifindex); if (!dp) return -ENODEV; @@ -1052,16 +1061,17 @@ static int ovs_flow_cmd_del(struct sk_buff *skb, struct genl_info *info) int err; int key_len; + dp = get_dp(sock_net(skb->sk), ovs_header->dp_ifindex); + if (!dp) + return -ENODEV; + if (!a[OVS_FLOW_ATTR_KEY]) - return flush_flows(ovs_header->dp_ifindex); + return flush_flows(dp); + err = ovs_flow_from_nlattrs(&key, &key_len, a[OVS_FLOW_ATTR_KEY]); if (err) return err; - dp = get_dp(ovs_header->dp_ifindex); - if (!dp) - return -ENODEV; - table = genl_dereference(dp->table); flow = ovs_flow_tbl_lookup(table, &key, key_len); if (!flow) @@ -1090,7 +1100,7 @@ static int ovs_flow_cmd_dump(struct sk_buff *skb, struct netlink_callback *cb) struct datapath *dp; struct flow_table *table; - dp = get_dp(ovs_header->dp_ifindex); + dp = get_dp(sock_net(skb->sk), ovs_header->dp_ifindex); if (!dp) return -ENODEV; @@ -1152,7 +1162,8 @@ static struct genl_family dp_datapath_genl_family = { .hdrsize = sizeof(struct ovs_header), .name = OVS_DATAPATH_FAMILY, .version = OVS_DATAPATH_VERSION, - .maxattr = OVS_DP_ATTR_MAX + .maxattr = OVS_DP_ATTR_MAX, + .netnsok = true }; static struct genl_multicast_group ovs_dp_datapath_multicast_group = { @@ -1210,18 +1221,19 @@ static struct sk_buff *ovs_dp_cmd_build_info(struct datapath *dp, u32 pid, } /* Called with genl_mutex and optionally with RTNL lock also. */ -static struct datapath *lookup_datapath(struct ovs_header *ovs_header, +static struct datapath *lookup_datapath(struct net *net, + struct ovs_header *ovs_header, struct nlattr *a[OVS_DP_ATTR_MAX + 1]) { struct datapath *dp; if (!a[OVS_DP_ATTR_NAME]) - dp = get_dp(ovs_header->dp_ifindex); + dp = get_dp(net, ovs_header->dp_ifindex); else { struct vport *vport; rcu_read_lock(); - vport = ovs_vport_locate(nla_data(a[OVS_DP_ATTR_NAME])); + vport = ovs_vport_locate(net, nla_data(a[OVS_DP_ATTR_NAME])); dp = vport && vport->port_no == OVSP_LOCAL ? vport->dp : NULL; rcu_read_unlock(); } @@ -1235,6 +1247,7 @@ static int ovs_dp_cmd_new(struct sk_buff *skb, struct genl_info *info) struct sk_buff *reply; struct datapath *dp; struct vport *vport; + struct ovs_net *ovs_net; int err; err = -EINVAL; @@ -1242,15 +1255,14 @@ static int ovs_dp_cmd_new(struct sk_buff *skb, struct genl_info *info) goto err; rtnl_lock(); - err = -ENODEV; - if (!try_module_get(THIS_MODULE)) - goto err_unlock_rtnl; err = -ENOMEM; dp = kzalloc(sizeof(*dp), GFP_KERNEL); if (dp == NULL) - goto err_put_module; + goto err_unlock_rtnl; + INIT_LIST_HEAD(&dp->port_list); + ovs_dp_set_net(dp, hold_net(sock_net(skb->sk))); /* Allocate table. */ err = -ENOMEM; @@ -1287,7 +1299,8 @@ static int ovs_dp_cmd_new(struct sk_buff *skb, struct genl_info *info) if (IS_ERR(reply)) goto err_destroy_local_port; - list_add_tail(&dp->list_node, &dps); + ovs_net = net_generic(ovs_dp_get_net(dp), ovs_net_id); + list_add_tail(&dp->list_node, &ovs_net->dps); rtnl_unlock(); genl_notify(reply, genl_info_net(info), info->snd_pid, @@ -1302,34 +1315,20 @@ err_destroy_percpu: err_destroy_table: ovs_flow_tbl_destroy(genl_dereference(dp->table)); err_free_dp: + release_net(ovs_dp_get_net(dp)); kfree(dp); -err_put_module: - module_put(THIS_MODULE); err_unlock_rtnl: rtnl_unlock(); err: return err; } -static int ovs_dp_cmd_del(struct sk_buff *skb, struct genl_info *info) +/* Called with genl_mutex. */ +static void __dp_destroy(struct datapath *dp) { struct vport *vport, *next_vport; - struct sk_buff *reply; - struct datapath *dp; - int err; rtnl_lock(); - dp = lookup_datapath(info->userhdr, info->attrs); - err = PTR_ERR(dp); - if (IS_ERR(dp)) - goto exit_unlock; - - reply = ovs_dp_cmd_build_info(dp, info->snd_pid, - info->snd_seq, OVS_DP_CMD_DEL); - err = PTR_ERR(reply); - if (IS_ERR(reply)) - goto exit_unlock; - list_for_each_entry_safe(vport, next_vport, &dp->port_list, node) if (vport->port_no != OVSP_LOCAL) ovs_dp_detach_port(vport); @@ -1345,17 +1344,32 @@ static int ovs_dp_cmd_del(struct sk_buff *skb, struct genl_info *info) rtnl_unlock(); call_rcu(&dp->rcu, destroy_dp_rcu); - module_put(THIS_MODULE); +} + +static int ovs_dp_cmd_del(struct sk_buff *skb, struct genl_info *info) +{ + struct sk_buff *reply; + struct datapath *dp; + int err; + + dp = lookup_datapath(sock_net(skb->sk), info->userhdr, info->attrs); + err = PTR_ERR(dp); + if (IS_ERR(dp)) + return err; + + reply = ovs_dp_cmd_build_info(dp, info->snd_pid, + info->snd_seq, OVS_DP_CMD_DEL); + err = PTR_ERR(reply); + if (IS_ERR(reply)) + return err; + + __dp_destroy(dp); genl_notify(reply, genl_info_net(info), info->snd_pid, ovs_dp_datapath_multicast_group.id, info->nlhdr, GFP_KERNEL); return 0; - -exit_unlock: - rtnl_unlock(); - return err; } static int ovs_dp_cmd_set(struct sk_buff *skb, struct genl_info *info) @@ -1364,7 +1378,7 @@ static int ovs_dp_cmd_set(struct sk_buff *skb, struct genl_info *info) struct datapath *dp; int err; - dp = lookup_datapath(info->userhdr, info->attrs); + dp = lookup_datapath(sock_net(skb->sk), info->userhdr, info->attrs); if (IS_ERR(dp)) return PTR_ERR(dp); @@ -1372,7 +1386,7 @@ static int ovs_dp_cmd_set(struct sk_buff *skb, struct genl_info *info) info->snd_seq, OVS_DP_CMD_NEW); if (IS_ERR(reply)) { err = PTR_ERR(reply); - netlink_set_err(init_net.genl_sock, 0, + netlink_set_err(sock_net(skb->sk)->genl_sock, 0, ovs_dp_datapath_multicast_group.id, err); return 0; } @@ -1389,7 +1403,7 @@ static int ovs_dp_cmd_get(struct sk_buff *skb, struct genl_info *info) struct sk_buff *reply; struct datapath *dp; - dp = lookup_datapath(info->userhdr, info->attrs); + dp = lookup_datapath(sock_net(skb->sk), info->userhdr, info->attrs); if (IS_ERR(dp)) return PTR_ERR(dp); @@ -1403,11 +1417,12 @@ static int ovs_dp_cmd_get(struct sk_buff *skb, struct genl_info *info) static int ovs_dp_cmd_dump(struct sk_buff *skb, struct netlink_callback *cb) { + struct ovs_net *ovs_net = net_generic(sock_net(skb->sk), ovs_net_id); struct datapath *dp; int skip = cb->args[0]; int i = 0; - 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(); } diff --git a/net/openvswitch/datapath.h b/net/openvswitch/datapath.h index c1105c14753..771c11e13e3 100644 --- a/net/openvswitch/datapath.h +++ b/net/openvswitch/datapath.h @@ -27,8 +27,7 @@ #include #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; diff --git a/net/openvswitch/dp_notify.c b/net/openvswitch/dp_notify.c index 36dcee8fc84..5558350e0d3 100644 --- a/net/openvswitch/dp_notify.c +++ b/net/openvswitch/dp_notify.c @@ -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; } diff --git a/net/openvswitch/vport-internal_dev.c b/net/openvswitch/vport-internal_dev.c index 4061b9ee07f..5d460c37df0 100644 --- a/net/openvswitch/vport-internal_dev.c +++ b/net/openvswitch/vport-internal_dev.c @@ -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; diff --git a/net/openvswitch/vport-netdev.c b/net/openvswitch/vport-netdev.c index 6ea3551cc78..3c1e58ba714 100644 --- a/net/openvswitch/vport-netdev.c +++ b/net/openvswitch/vport-netdev.c @@ -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; diff --git a/net/openvswitch/vport.c b/net/openvswitch/vport.c index 6140336e79d..9873acea978 100644 --- a/net/openvswitch/vport.c +++ b/net/openvswitch/vport.c @@ -16,10 +16,10 @@ * 02110-1301, USA */ -#include #include #include #include +#include #include #include #include @@ -27,7 +27,9 @@ #include #include #include +#include +#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; } } diff --git a/net/openvswitch/vport.h b/net/openvswitch/vport.h index aac680ca2b0..97cef08d981 100644 --- a/net/openvswitch/vport.h +++ b/net/openvswitch/vport.h @@ -20,6 +20,7 @@ #define VPORT_H 1 #include +#include #include #include #include @@ -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 *); -- 2.43.2