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-rw-r--r--net/openvswitch/datapath.c453
1 files changed, 276 insertions, 177 deletions
diff --git a/net/openvswitch/datapath.c b/net/openvswitch/datapath.c
index cf58cedad083..4c4b62ccc7d7 100644
--- a/net/openvswitch/datapath.c
+++ b/net/openvswitch/datapath.c
@@ -49,12 +49,29 @@
#include <linux/dmi.h>
#include <linux/workqueue.h>
#include <net/genetlink.h>
+#include <net/net_namespace.h>
+#include <net/netns/generic.h>
#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:
*
* Writes to device state (add/remove datapath, port, set operations on vports,
@@ -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)
@@ -107,7 +116,7 @@ static struct datapath *get_dp(int dp_ifindex)
/* Must be called with rcu_read_lock or RTNL lock. */
const char *ovs_dp_name(const struct datapath *dp)
{
- struct vport *vport = rcu_dereference_rtnl(dp->ports[OVSP_LOCAL]);
+ struct vport *vport = ovs_vport_rtnl_rcu(dp, OVSP_LOCAL);
return vport->ops->get_name(vport);
}
@@ -118,7 +127,7 @@ static int get_dpifindex(struct datapath *dp)
rcu_read_lock();
- local = rcu_dereference(dp->ports[OVSP_LOCAL]);
+ local = ovs_vport_rcu(dp, OVSP_LOCAL);
if (local)
ifindex = local->ops->get_ifindex(local);
else
@@ -135,9 +144,31 @@ 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->ports);
kfree(dp);
}
+static struct hlist_head *vport_hash_bucket(const struct datapath *dp,
+ u16 port_no)
+{
+ return &dp->ports[port_no & (DP_VPORT_HASH_BUCKETS - 1)];
+}
+
+struct vport *ovs_lookup_vport(const struct datapath *dp, u16 port_no)
+{
+ struct vport *vport;
+ struct hlist_node *n;
+ struct hlist_head *head;
+
+ head = vport_hash_bucket(dp, port_no);
+ hlist_for_each_entry_rcu(vport, n, head, dp_hash_node) {
+ if (vport->port_no == port_no)
+ return vport;
+ }
+ return NULL;
+}
+
/* Called with RTNL lock and genl_lock. */
static struct vport *new_vport(const struct vport_parms *parms)
{
@@ -146,9 +177,9 @@ static struct vport *new_vport(const struct vport_parms *parms)
vport = ovs_vport_add(parms);
if (!IS_ERR(vport)) {
struct datapath *dp = parms->dp;
+ struct hlist_head *head = vport_hash_bucket(dp, vport->port_no);
- rcu_assign_pointer(dp->ports[parms->port_no], vport);
- list_add(&vport->node, &dp->port_list);
+ hlist_add_head_rcu(&vport->dp_hash_node, head);
}
return vport;
@@ -160,8 +191,7 @@ void ovs_dp_detach_port(struct vport *p)
ASSERT_RTNL();
/* First drop references to device. */
- list_del(&p->node);
- rcu_assign_pointer(p->dp->ports[p->port_no], NULL);
+ hlist_del_rcu(&p->dp_hash_node);
/* Then destroy it. */
ovs_vport_del(p);
@@ -195,7 +225,7 @@ void ovs_dp_process_received_packet(struct vport *p, struct sk_buff *skb)
upcall.cmd = OVS_PACKET_CMD_MISS;
upcall.key = &key;
upcall.userdata = NULL;
- upcall.pid = p->upcall_pid;
+ upcall.portid = p->upcall_portid;
ovs_dp_upcall(dp, skb, &upcall);
consume_skb(skb);
stats_counter = &stats->n_missed;
@@ -220,17 +250,18 @@ 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;
int err;
- if (upcall_info->pid == 0) {
+ if (upcall_info->portid == 0) {
err = -ENOTCONN;
goto err;
}
@@ -242,9 +273,9 @@ 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 +291,8 @@ 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 +308,7 @@ 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 +338,8 @@ 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 +395,7 @@ 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->portid);
out:
kfree_skb(nskb);
@@ -370,15 +403,10 @@ 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 +696,7 @@ 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 +770,8 @@ 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 = {
@@ -751,7 +780,7 @@ static struct genl_multicast_group ovs_dp_flow_multicast_group = {
/* Called with genl_lock. */
static int ovs_flow_cmd_fill_info(struct sw_flow *flow, struct datapath *dp,
- struct sk_buff *skb, u32 pid,
+ struct sk_buff *skb, u32 portid,
u32 seq, u32 flags, u8 cmd)
{
const int skb_orig_len = skb->len;
@@ -766,7 +795,7 @@ static int ovs_flow_cmd_fill_info(struct sw_flow *flow, struct datapath *dp,
sf_acts = rcu_dereference_protected(flow->sf_acts,
lockdep_genl_is_held());
- ovs_header = genlmsg_put(skb, pid, seq, &dp_flow_genl_family, flags, cmd);
+ ovs_header = genlmsg_put(skb, portid, seq, &dp_flow_genl_family, flags, cmd);
if (!ovs_header)
return -EMSGSIZE;
@@ -850,7 +879,7 @@ static struct sk_buff *ovs_flow_cmd_alloc_info(struct sw_flow *flow)
static struct sk_buff *ovs_flow_cmd_build_info(struct sw_flow *flow,
struct datapath *dp,
- u32 pid, u32 seq, u8 cmd)
+ u32 portid, u32 seq, u8 cmd)
{
struct sk_buff *skb;
int retval;
@@ -859,7 +888,7 @@ static struct sk_buff *ovs_flow_cmd_build_info(struct sw_flow *flow,
if (!skb)
return ERR_PTR(-ENOMEM);
- retval = ovs_flow_cmd_fill_info(flow, dp, skb, pid, seq, 0, cmd);
+ retval = ovs_flow_cmd_fill_info(flow, dp, skb, portid, seq, 0, cmd);
BUG_ON(retval < 0);
return skb;
}
@@ -894,7 +923,7 @@ 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;
@@ -941,7 +970,7 @@ static int ovs_flow_cmd_new_or_set(struct sk_buff *skb, struct genl_info *info)
flow->hash = ovs_flow_hash(&key, key_len);
ovs_flow_tbl_insert(table, flow);
- reply = ovs_flow_cmd_build_info(flow, dp, info->snd_pid,
+ reply = ovs_flow_cmd_build_info(flow, dp, info->snd_portid,
info->snd_seq,
OVS_FLOW_CMD_NEW);
} else {
@@ -979,7 +1008,7 @@ static int ovs_flow_cmd_new_or_set(struct sk_buff *skb, struct genl_info *info)
ovs_flow_deferred_free_acts(old_acts);
}
- reply = ovs_flow_cmd_build_info(flow, dp, info->snd_pid,
+ reply = ovs_flow_cmd_build_info(flow, dp, info->snd_portid,
info->snd_seq, OVS_FLOW_CMD_NEW);
/* Clear stats. */
@@ -991,11 +1020,11 @@ static int ovs_flow_cmd_new_or_set(struct sk_buff *skb, struct genl_info *info)
}
if (!IS_ERR(reply))
- genl_notify(reply, genl_info_net(info), info->snd_pid,
+ genl_notify(reply, genl_info_net(info), info->snd_portid,
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 +1052,7 @@ 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;
@@ -1032,7 +1061,7 @@ static int ovs_flow_cmd_get(struct sk_buff *skb, struct genl_info *info)
if (!flow)
return -ENOENT;
- reply = ovs_flow_cmd_build_info(flow, dp, info->snd_pid,
+ reply = ovs_flow_cmd_build_info(flow, dp, info->snd_portid,
info->snd_seq, OVS_FLOW_CMD_NEW);
if (IS_ERR(reply))
return PTR_ERR(reply);
@@ -1052,16 +1081,17 @@ 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)
@@ -1073,13 +1103,13 @@ static int ovs_flow_cmd_del(struct sk_buff *skb, struct genl_info *info)
ovs_flow_tbl_remove(table, flow);
- err = ovs_flow_cmd_fill_info(flow, dp, reply, info->snd_pid,
+ err = ovs_flow_cmd_fill_info(flow, dp, reply, info->snd_portid,
info->snd_seq, 0, OVS_FLOW_CMD_DEL);
BUG_ON(err < 0);
ovs_flow_deferred_free(flow);
- genl_notify(reply, genl_info_net(info), info->snd_pid,
+ genl_notify(reply, genl_info_net(info), info->snd_portid,
ovs_dp_flow_multicast_group.id, info->nlhdr, GFP_KERNEL);
return 0;
}
@@ -1090,7 +1120,7 @@ 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;
@@ -1107,7 +1137,7 @@ static int ovs_flow_cmd_dump(struct sk_buff *skb, struct netlink_callback *cb)
break;
if (ovs_flow_cmd_fill_info(flow, dp, skb,
- NETLINK_CB(cb->skb).pid,
+ NETLINK_CB(cb->skb).portid,
cb->nlh->nlmsg_seq, NLM_F_MULTI,
OVS_FLOW_CMD_NEW) < 0)
break;
@@ -1152,7 +1182,8 @@ 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 = {
@@ -1160,13 +1191,13 @@ static struct genl_multicast_group ovs_dp_datapath_multicast_group = {
};
static int ovs_dp_cmd_fill_info(struct datapath *dp, struct sk_buff *skb,
- u32 pid, u32 seq, u32 flags, u8 cmd)
+ u32 portid, u32 seq, u32 flags, u8 cmd)
{
struct ovs_header *ovs_header;
struct ovs_dp_stats dp_stats;
int err;
- ovs_header = genlmsg_put(skb, pid, seq, &dp_datapath_genl_family,
+ ovs_header = genlmsg_put(skb, portid, seq, &dp_datapath_genl_family,
flags, cmd);
if (!ovs_header)
goto error;
@@ -1191,7 +1222,7 @@ error:
return -EMSGSIZE;
}
-static struct sk_buff *ovs_dp_cmd_build_info(struct datapath *dp, u32 pid,
+static struct sk_buff *ovs_dp_cmd_build_info(struct datapath *dp, u32 portid,
u32 seq, u8 cmd)
{
struct sk_buff *skb;
@@ -1201,7 +1232,7 @@ static struct sk_buff *ovs_dp_cmd_build_info(struct datapath *dp, u32 pid,
if (!skb)
return ERR_PTR(-ENOMEM);
- retval = ovs_dp_cmd_fill_info(dp, skb, pid, seq, 0, cmd);
+ retval = ovs_dp_cmd_fill_info(dp, skb, portid, seq, 0, cmd);
if (retval < 0) {
kfree_skb(skb);
return ERR_PTR(retval);
@@ -1210,18 +1241,19 @@ 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();
}
@@ -1235,22 +1267,21 @@ static int ovs_dp_cmd_new(struct sk_buff *skb, struct genl_info *info)
struct sk_buff *reply;
struct datapath *dp;
struct vport *vport;
- int err;
+ struct ovs_net *ovs_net;
+ int err, i;
err = -EINVAL;
if (!a[OVS_DP_ATTR_NAME] || !a[OVS_DP_ATTR_UPCALL_PID])
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;
- INIT_LIST_HEAD(&dp->port_list);
+ goto err_unlock_rtnl;
+
+ ovs_dp_set_net(dp, hold_net(sock_net(skb->sk)));
/* Allocate table. */
err = -ENOMEM;
@@ -1264,13 +1295,23 @@ static int ovs_dp_cmd_new(struct sk_buff *skb, struct genl_info *info)
goto err_destroy_table;
}
+ dp->ports = kmalloc(DP_VPORT_HASH_BUCKETS * sizeof(struct hlist_head),
+ GFP_KERNEL);
+ if (!dp->ports) {
+ err = -ENOMEM;
+ goto err_destroy_percpu;
+ }
+
+ for (i = 0; i < DP_VPORT_HASH_BUCKETS; i++)
+ INIT_HLIST_HEAD(&dp->ports[i]);
+
/* Set up our datapath device. */
parms.name = nla_data(a[OVS_DP_ATTR_NAME]);
parms.type = OVS_VPORT_TYPE_INTERNAL;
parms.options = NULL;
parms.dp = dp;
parms.port_no = OVSP_LOCAL;
- parms.upcall_pid = nla_get_u32(a[OVS_DP_ATTR_UPCALL_PID]);
+ parms.upcall_portid = nla_get_u32(a[OVS_DP_ATTR_UPCALL_PID]);
vport = new_vport(&parms);
if (IS_ERR(vport)) {
@@ -1278,64 +1319,59 @@ static int ovs_dp_cmd_new(struct sk_buff *skb, struct genl_info *info)
if (err == -EBUSY)
err = -EEXIST;
- goto err_destroy_percpu;
+ goto err_destroy_ports_array;
}
- reply = ovs_dp_cmd_build_info(dp, info->snd_pid,
+ reply = ovs_dp_cmd_build_info(dp, info->snd_portid,
info->snd_seq, OVS_DP_CMD_NEW);
err = PTR_ERR(reply);
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,
+ genl_notify(reply, genl_info_net(info), info->snd_portid,
ovs_dp_datapath_multicast_group.id, info->nlhdr,
GFP_KERNEL);
return 0;
err_destroy_local_port:
- ovs_dp_detach_port(rtnl_dereference(dp->ports[OVSP_LOCAL]));
+ ovs_dp_detach_port(ovs_vport_rtnl(dp, OVSP_LOCAL));
+err_destroy_ports_array:
+ kfree(dp->ports);
err_destroy_percpu:
free_percpu(dp->stats_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;
+ int i;
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;
+ for (i = 0; i < DP_VPORT_HASH_BUCKETS; i++) {
+ struct vport *vport;
+ struct hlist_node *node, *n;
- list_for_each_entry_safe(vport, next_vport, &dp->port_list, node)
- if (vport->port_no != OVSP_LOCAL)
- ovs_dp_detach_port(vport);
+ hlist_for_each_entry_safe(vport, node, n, &dp->ports[i], dp_hash_node)
+ if (vport->port_no != OVSP_LOCAL)
+ ovs_dp_detach_port(vport);
+ }
list_del(&dp->list_node);
- ovs_dp_detach_port(rtnl_dereference(dp->ports[OVSP_LOCAL]));
+ ovs_dp_detach_port(ovs_vport_rtnl(dp, OVSP_LOCAL));
/* rtnl_unlock() will wait until all the references to devices that
* are pending unregistration have been dropped. We do it here to
@@ -1345,17 +1381,32 @@ 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;
- genl_notify(reply, genl_info_net(info), info->snd_pid,
+ reply = ovs_dp_cmd_build_info(dp, info->snd_portid,
+ 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_portid,
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)
@@ -1364,20 +1415,20 @@ 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);
- reply = ovs_dp_cmd_build_info(dp, info->snd_pid,
+ reply = ovs_dp_cmd_build_info(dp, info->snd_portid,
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;
}
- genl_notify(reply, genl_info_net(info), info->snd_pid,
+ genl_notify(reply, genl_info_net(info), info->snd_portid,
ovs_dp_datapath_multicast_group.id, info->nlhdr,
GFP_KERNEL);
@@ -1389,11 +1440,11 @@ 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);
- reply = ovs_dp_cmd_build_info(dp, info->snd_pid,
+ reply = ovs_dp_cmd_build_info(dp, info->snd_portid,
info->snd_seq, OVS_DP_CMD_NEW);
if (IS_ERR(reply))
return PTR_ERR(reply);
@@ -1403,13 +1454,14 @@ 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,
+ ovs_dp_cmd_fill_info(dp, skb, NETLINK_CB(cb->skb).portid,
cb->nlh->nlmsg_seq, NLM_F_MULTI,
OVS_DP_CMD_NEW) < 0)
break;
@@ -1459,7 +1511,8 @@ 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 = {
@@ -1468,13 +1521,13 @@ struct genl_multicast_group ovs_dp_vport_multicast_group = {
/* Called with RTNL lock or RCU read lock. */
static int ovs_vport_cmd_fill_info(struct vport *vport, struct sk_buff *skb,
- u32 pid, u32 seq, u32 flags, u8 cmd)
+ u32 portid, u32 seq, u32 flags, u8 cmd)
{
struct ovs_header *ovs_header;
struct ovs_vport_stats vport_stats;
int err;
- ovs_header = genlmsg_put(skb, pid, seq, &dp_vport_genl_family,
+ ovs_header = genlmsg_put(skb, portid, seq, &dp_vport_genl_family,
flags, cmd);
if (!ovs_header)
return -EMSGSIZE;
@@ -1484,7 +1537,7 @@ static int ovs_vport_cmd_fill_info(struct vport *vport, struct sk_buff *skb,
if (nla_put_u32(skb, OVS_VPORT_ATTR_PORT_NO, vport->port_no) ||
nla_put_u32(skb, OVS_VPORT_ATTR_TYPE, vport->ops->type) ||
nla_put_string(skb, OVS_VPORT_ATTR_NAME, vport->ops->get_name(vport)) ||
- nla_put_u32(skb, OVS_VPORT_ATTR_UPCALL_PID, vport->upcall_pid))
+ nla_put_u32(skb, OVS_VPORT_ATTR_UPCALL_PID, vport->upcall_portid))
goto nla_put_failure;
ovs_vport_get_stats(vport, &vport_stats);
@@ -1506,7 +1559,7 @@ error:
}
/* Called with RTNL lock or RCU read lock. */
-struct sk_buff *ovs_vport_cmd_build_info(struct vport *vport, u32 pid,
+struct sk_buff *ovs_vport_cmd_build_info(struct vport *vport, u32 portid,
u32 seq, u8 cmd)
{
struct sk_buff *skb;
@@ -1516,7 +1569,7 @@ struct sk_buff *ovs_vport_cmd_build_info(struct vport *vport, u32 pid,
if (!skb)
return ERR_PTR(-ENOMEM);
- retval = ovs_vport_cmd_fill_info(vport, skb, pid, seq, 0, cmd);
+ retval = ovs_vport_cmd_fill_info(vport, skb, portid, seq, 0, cmd);
if (retval < 0) {
kfree_skb(skb);
return ERR_PTR(retval);
@@ -1525,14 +1578,15 @@ 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 &&
@@ -1545,11 +1599,11 @@ 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);
- vport = rcu_dereference_rtnl(dp->ports[port_no]);
+ vport = ovs_vport_rtnl_rcu(dp, port_no);
if (!vport)
return ERR_PTR(-ENOENT);
return vport;
@@ -1574,7 +1628,7 @@ 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;
@@ -1586,7 +1640,7 @@ static int ovs_vport_cmd_new(struct sk_buff *skb, struct genl_info *info)
if (port_no >= DP_MAX_PORTS)
goto exit_unlock;
- vport = rtnl_dereference(dp->ports[port_no]);
+ vport = ovs_vport_rtnl_rcu(dp, port_no);
err = -EBUSY;
if (vport)
goto exit_unlock;
@@ -1596,7 +1650,7 @@ static int ovs_vport_cmd_new(struct sk_buff *skb, struct genl_info *info)
err = -EFBIG;
goto exit_unlock;
}
- vport = rtnl_dereference(dp->ports[port_no]);
+ vport = ovs_vport_rtnl(dp, port_no);
if (!vport)
break;
}
@@ -1607,21 +1661,21 @@ static int ovs_vport_cmd_new(struct sk_buff *skb, struct genl_info *info)
parms.options = a[OVS_VPORT_ATTR_OPTIONS];
parms.dp = dp;
parms.port_no = port_no;
- parms.upcall_pid = nla_get_u32(a[OVS_VPORT_ATTR_UPCALL_PID]);
+ parms.upcall_portid = nla_get_u32(a[OVS_VPORT_ATTR_UPCALL_PID]);
vport = new_vport(&parms);
err = PTR_ERR(vport);
if (IS_ERR(vport))
goto exit_unlock;
- reply = ovs_vport_cmd_build_info(vport, info->snd_pid, info->snd_seq,
+ reply = ovs_vport_cmd_build_info(vport, info->snd_portid, info->snd_seq,
OVS_VPORT_CMD_NEW);
if (IS_ERR(reply)) {
err = PTR_ERR(reply);
ovs_dp_detach_port(vport);
goto exit_unlock;
}
- genl_notify(reply, genl_info_net(info), info->snd_pid,
+ genl_notify(reply, genl_info_net(info), info->snd_portid,
ovs_dp_vport_multicast_group.id, info->nlhdr, GFP_KERNEL);
exit_unlock:
@@ -1638,7 +1692,7 @@ 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;
@@ -1653,17 +1707,17 @@ static int ovs_vport_cmd_set(struct sk_buff *skb, struct genl_info *info)
if (err)
goto exit_unlock;
if (a[OVS_VPORT_ATTR_UPCALL_PID])
- vport->upcall_pid = nla_get_u32(a[OVS_VPORT_ATTR_UPCALL_PID]);
+ vport->upcall_portid = nla_get_u32(a[OVS_VPORT_ATTR_UPCALL_PID]);
- reply = ovs_vport_cmd_build_info(vport, info->snd_pid, info->snd_seq,
+ reply = ovs_vport_cmd_build_info(vport, info->snd_portid, 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;
}
- genl_notify(reply, genl_info_net(info), info->snd_pid,
+ genl_notify(reply, genl_info_net(info), info->snd_portid,
ovs_dp_vport_multicast_group.id, info->nlhdr, GFP_KERNEL);
exit_unlock:
@@ -1679,7 +1733,7 @@ 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;
@@ -1689,7 +1743,7 @@ static int ovs_vport_cmd_del(struct sk_buff *skb, struct genl_info *info)
goto exit_unlock;
}
- reply = ovs_vport_cmd_build_info(vport, info->snd_pid, info->snd_seq,
+ reply = ovs_vport_cmd_build_info(vport, info->snd_portid, info->snd_seq,
OVS_VPORT_CMD_DEL);
err = PTR_ERR(reply);
if (IS_ERR(reply))
@@ -1697,7 +1751,7 @@ static int ovs_vport_cmd_del(struct sk_buff *skb, struct genl_info *info)
ovs_dp_detach_port(vport);
- genl_notify(reply, genl_info_net(info), info->snd_pid,
+ genl_notify(reply, genl_info_net(info), info->snd_portid,
ovs_dp_vport_multicast_group.id, info->nlhdr, GFP_KERNEL);
exit_unlock:
@@ -1714,12 +1768,12 @@ 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;
- reply = ovs_vport_cmd_build_info(vport, info->snd_pid, info->snd_seq,
+ reply = ovs_vport_cmd_build_info(vport, info->snd_portid, info->snd_seq,
OVS_VPORT_CMD_NEW);
err = PTR_ERR(reply);
if (IS_ERR(reply))
@@ -1738,54 +1792,39 @@ static int ovs_vport_cmd_dump(struct sk_buff *skb, struct netlink_callback *cb)
{
struct ovs_header *ovs_header = genlmsg_data(nlmsg_data(cb->nlh));
struct datapath *dp;
- u32 port_no;
- int retval;
+ int bucket = cb->args[0], skip = cb->args[1];
+ int i, j = 0;
- dp = get_dp(ovs_header->dp_ifindex);
+ dp = get_dp(sock_net(skb->sk), ovs_header->dp_ifindex);
if (!dp)
return -ENODEV;
rcu_read_lock();
- for (port_no = cb->args[0]; port_no < DP_MAX_PORTS; port_no++) {
+ for (i = bucket; i < DP_VPORT_HASH_BUCKETS; i++) {
struct vport *vport;
-
- vport = rcu_dereference(dp->ports[port_no]);
- if (!vport)
- continue;
-
- if (ovs_vport_cmd_fill_info(vport, skb, NETLINK_CB(cb->skb).pid,
- cb->nlh->nlmsg_seq, NLM_F_MULTI,
- OVS_VPORT_CMD_NEW) < 0)
- break;
- }
- rcu_read_unlock();
-
- cb->args[0] = port_no;
- retval = skb->len;
-
- 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);
+ struct hlist_node *n;
+
+ j = 0;
+ hlist_for_each_entry_rcu(vport, n, &dp->ports[i], dp_hash_node) {
+ if (j >= skip &&
+ ovs_vport_cmd_fill_info(vport, skb,
+ NETLINK_CB(cb->skb).portid,
+ cb->nlh->nlmsg_seq,
+ NLM_F_MULTI,
+ OVS_VPORT_CMD_NEW) < 0)
+ goto out;
+
+ j++;
}
+ skip = 0;
}
+out:
+ rcu_read_unlock();
- genl_unlock();
+ cb->args[0] = i;
+ cb->args[1] = j;
- schedule_delayed_work(&rehash_flow_wq, REHASH_FLOW_INTERVAL);
+ return skb->len;
}
static struct genl_ops dp_vport_genl_ops[] = {
@@ -1872,6 +1911,59 @@ 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 +1981,14 @@ 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 +1999,8 @@ 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 +2012,10 @@ 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();
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-03 22:51:40 +0100