#include <linux/kconfig.h>
#include <linux/kernel.h>
#include <linux/list.h>
+#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/percpu.h>
#include <linux/rcupdate.h>
static void ovs_vport_record_error(struct vport *,
enum vport_err_type err_type);
-/* List of statically compiled vport implementations. Don't forget to also
- * add yours to the list at the bottom of vport.h. */
-static const struct vport_ops *vport_ops_list[] = {
- &ovs_netdev_vport_ops,
- &ovs_internal_vport_ops,
- &ovs_geneve_vport_ops,
-#if IS_ENABLED(CONFIG_NET_IPGRE_DEMUX)
- &ovs_gre_vport_ops,
- &ovs_gre64_vport_ops,
-#endif
- &ovs_vxlan_vport_ops,
- &ovs_lisp_vport_ops,
-};
+static LIST_HEAD(vport_ops_list);
/* Protected by RCU read lock for reading, ovs_mutex for writing. */
static struct hlist_head *dev_table;
kfree(dev_table);
}
-static struct hlist_head *hash_bucket(struct net *net, const char *name)
+static struct hlist_head *hash_bucket(const struct net *net, const char *name)
{
unsigned int hash = jhash(name, strlen(name), (unsigned long) net);
return &dev_table[hash & (VPORT_HASH_BUCKETS - 1)];
}
+int ovs_vport_ops_register(struct vport_ops *ops)
+{
+ int err = -EEXIST;
+ struct vport_ops *o;
+
+ ovs_lock();
+ list_for_each_entry(o, &vport_ops_list, list)
+ if (ops->type == o->type)
+ goto errout;
+
+ list_add_tail(&ops->list, &vport_ops_list);
+ err = 0;
+errout:
+ ovs_unlock();
+ return err;
+}
+EXPORT_SYMBOL_GPL(ovs_vport_ops_register);
+
+void ovs_vport_ops_unregister(struct vport_ops *ops)
+{
+ ovs_lock();
+ list_del(&ops->list);
+ ovs_unlock();
+}
+EXPORT_SYMBOL_GPL(ovs_vport_ops_unregister);
+
/**
* ovs_vport_locate - find a port that has already been created
*
*
* Must be called with ovs or RCU read lock.
*/
-struct vport *ovs_vport_locate(struct net *net, const char *name)
+struct vport *ovs_vport_locate(const struct net *net, const char *name)
{
struct hlist_head *bucket = hash_bucket(net, name);
struct vport *vport;
return ERR_PTR(-ENOMEM);
}
- spin_lock_init(&vport->stats_lock);
-
return vport;
}
+EXPORT_SYMBOL_GPL(ovs_vport_alloc);
+
+static struct vport_ops *ovs_vport_lookup(const struct vport_parms *parms)
+{
+ struct vport_ops *ops;
+
+ list_for_each_entry(ops, &vport_ops_list, list)
+ if (ops->type == parms->type)
+ return ops;
+
+ return NULL;
+}
/**
* ovs_vport_free - uninitialize and free vport
*/
void ovs_vport_free(struct vport *vport)
{
- kfree((struct vport_portids __force *)vport->upcall_portids);
+ kfree(rcu_dereference_raw(vport->upcall_portids));
free_percpu(vport->percpu_stats);
kfree(vport);
}
+EXPORT_SYMBOL_GPL(ovs_vport_free);
/**
* ovs_vport_add - add vport device (for kernel callers)
*/
struct vport *ovs_vport_add(const struct vport_parms *parms)
{
+ struct vport_ops *ops;
struct vport *vport;
- int err = 0;
- int i;
- for (i = 0; i < ARRAY_SIZE(vport_ops_list); i++) {
- if (vport_ops_list[i]->type == parms->type) {
- struct hlist_head *bucket;
+ ops = ovs_vport_lookup(parms);
+ if (ops) {
+ struct hlist_head *bucket;
- vport = vport_ops_list[i]->create(parms);
- if (IS_ERR(vport)) {
- err = PTR_ERR(vport);
- goto out;
- }
+ if (!try_module_get(ops->owner))
+ return ERR_PTR(-EAFNOSUPPORT);
- bucket = hash_bucket(ovs_dp_get_net(vport->dp),
- vport->ops->get_name(vport));
- hlist_add_head_rcu(&vport->hash_node, bucket);
+ vport = ops->create(parms);
+ if (IS_ERR(vport)) {
+ module_put(ops->owner);
return 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;
}
- err = -EAFNOSUPPORT;
+ /* Unlock to attempt module load and return -EAGAIN if load
+ * was successful as we need to restart the port addition
+ * workflow.
+ */
+ ovs_unlock();
+ request_module("vport-type-%d", parms->type);
+ ovs_lock();
-out:
- return ERR_PTR(err);
+ if (!ovs_vport_lookup(parms))
+ return ERR_PTR(-EAFNOSUPPORT);
+ else
+ return ERR_PTR(-EAGAIN);
}
/**
ASSERT_OVSL();
hlist_del_rcu(&vport->hash_node);
+ module_put(vport->ops->owner);
vport->ops->destroy(vport);
}
* netdev-stats can be directly read over netlink-ioctl.
*/
- spin_lock_bh(&vport->stats_lock);
-
- stats->rx_errors = vport->err_stats.rx_errors;
- stats->tx_errors = vport->err_stats.tx_errors;
- stats->tx_dropped = vport->err_stats.tx_dropped;
- stats->rx_dropped = vport->err_stats.rx_dropped;
-
- spin_unlock_bh(&vport->stats_lock);
+ stats->rx_errors = atomic_long_read(&vport->err_stats.rx_errors);
+ stats->tx_errors = atomic_long_read(&vport->err_stats.tx_errors);
+ stats->tx_dropped = atomic_long_read(&vport->err_stats.tx_dropped);
+ stats->rx_dropped = atomic_long_read(&vport->err_stats.rx_dropped);
stats->rx_bytes = 0;
stats->rx_packets = 0;
*
* Must be called with ovs_mutex.
*/
-int ovs_vport_set_upcall_portids(struct vport *vport, struct nlattr *ids)
+int ovs_vport_set_upcall_portids(struct vport *vport, const struct nlattr *ids)
{
struct vport_portids *old, *vport_portids;
*
* Returns the portid of the target socket. Must be called with rcu_read_lock.
*/
-u32 ovs_vport_find_upcall_portid(const struct vport *p, struct sk_buff *skb)
+u32 ovs_vport_find_upcall_portid(const struct vport *vport, struct sk_buff *skb)
{
struct vport_portids *ids;
u32 hash;
- ids = rcu_dereference(p->upcall_portids);
+ ids = rcu_dereference(vport->upcall_portids);
if (ids->n_ids == 1 && ids->ids[0] == 0)
return 0;
* called compute_ip_summed() to initialize the checksumming fields.
*/
void ovs_vport_receive(struct vport *vport, struct sk_buff *skb,
- struct ovs_tunnel_info *tun_info)
+ const struct ovs_tunnel_info *tun_info)
{
struct pcpu_sw_netstats *stats;
struct sw_flow_key key;
stats = this_cpu_ptr(vport->percpu_stats);
u64_stats_update_begin(&stats->syncp);
stats->rx_packets++;
- stats->rx_bytes += skb->len;
+ stats->rx_bytes += skb->len + (skb_vlan_tag_present(skb) ? VLAN_HLEN : 0);
u64_stats_update_end(&stats->syncp);
ovs_skb_init_inner_protocol(skb);
kfree_skb(skb);
return;
}
-
- ovs_dp_process_packet(skb);
+ ovs_dp_process_packet(skb, &key);
}
+EXPORT_SYMBOL_GPL(ovs_vport_receive);
/**
* ovs_vport_send - send a packet on a device
u64_stats_update_end(&stats->syncp);
} else if (sent < 0) {
ovs_vport_record_error(vport, VPORT_E_TX_ERROR);
- kfree_skb(skb);
- } else
+ } else {
ovs_vport_record_error(vport, VPORT_E_TX_DROPPED);
-
+ }
return sent;
}
static void ovs_vport_record_error(struct vport *vport,
enum vport_err_type err_type)
{
- spin_lock(&vport->stats_lock);
-
switch (err_type) {
case VPORT_E_RX_DROPPED:
- vport->err_stats.rx_dropped++;
+ atomic_long_inc(&vport->err_stats.rx_dropped);
break;
case VPORT_E_RX_ERROR:
- vport->err_stats.rx_errors++;
+ atomic_long_inc(&vport->err_stats.rx_errors);
break;
case VPORT_E_TX_DROPPED:
- vport->err_stats.tx_dropped++;
+ atomic_long_inc(&vport->err_stats.tx_dropped);
break;
case VPORT_E_TX_ERROR:
- vport->err_stats.tx_errors++;
+ atomic_long_inc(&vport->err_stats.tx_errors);
break;
}
- spin_unlock(&vport->stats_lock);
}
static void free_vport_rcu(struct rcu_head *rcu)
call_rcu(&vport->rcu, free_vport_rcu);
}
+EXPORT_SYMBOL_GPL(ovs_vport_deferred_free);
int ovs_tunnel_get_egress_info(struct ovs_tunnel_info *egress_tun_info,
struct net *net,
return 0;
}
+EXPORT_SYMBOL_GPL(ovs_tunnel_get_egress_info);
int ovs_vport_get_egress_tun_info(struct vport *vport, struct sk_buff *skb,
struct ovs_tunnel_info *info)
projects / cascardo / ovs.git / blobdiff