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Commit 9602c01e authored by Andy Zhou's avatar Andy Zhou Committed by David S. Miller
Browse files

openvswitch: export get_dp() API. 



Later patches will invoke get_dp() outside of datapath.c. Export it.

Signed-off-by: default avatarAndy Zhou <azhou@ovn.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 57940406

net/openvswitch/datapath.c

+0 −29
Original line number Diff line number Diff line
@@ -142,35 +142,6 @@ static int queue_userspace_packet(struct datapath *dp, struct sk_buff *, 
				  const struct dp_upcall_info *,

				  uint32_t cutlen);



/* Must be called with rcu_read_lock. */

static struct datapath *get_dp_rcu(struct net *net, int dp_ifindex)

{

	struct net_device *dev = dev_get_by_index_rcu(net, dp_ifindex);



	if (dev) {

		struct vport *vport = ovs_internal_dev_get_vport(dev);

		if (vport)

			return vport->dp;

	}



	return NULL;

}



/* The caller must hold either ovs_mutex or rcu_read_lock to keep the

 * returned dp pointer valid.

 */

static inline struct datapath *get_dp(struct net *net, int dp_ifindex)

{

	struct datapath *dp;



	WARN_ON_ONCE(!rcu_read_lock_held() && !lockdep_ovsl_is_held());

	rcu_read_lock();

	dp = get_dp_rcu(net, dp_ifindex);

	rcu_read_unlock();



	return dp;

}



/* Must be called with rcu_read_lock or ovs_mutex. */

const char *ovs_dp_name(const struct datapath *dp)

{

net/openvswitch/datapath.h

+31 −0
Original line number Diff line number Diff line
@@ -30,6 +30,7 @@ 
#include "conntrack.h"

#include "flow.h"

#include "flow_table.h"

#include "vport-internal_dev.h"



#define DP_MAX_PORTS           USHRT_MAX

#define DP_VPORT_HASH_BUCKETS  1024
@@ -190,6 +191,36 @@ static inline struct vport *ovs_vport_ovsl(const struct datapath *dp, int port_n 
	return ovs_lookup_vport(dp, port_no);

}



/* Must be called with rcu_read_lock. */

static inline struct datapath *get_dp_rcu(struct net *net, int dp_ifindex)

{

	struct net_device *dev = dev_get_by_index_rcu(net, dp_ifindex);



	if (dev) {

		struct vport *vport = ovs_internal_dev_get_vport(dev);



		if (vport)

			return vport->dp;

	}



	return NULL;

}



/* The caller must hold either ovs_mutex or rcu_read_lock to keep the

 * returned dp pointer valid.

 */

static inline struct datapath *get_dp(struct net *net, int dp_ifindex)

{

	struct datapath *dp;



	WARN_ON_ONCE(!rcu_read_lock_held() && !lockdep_ovsl_is_held());

	rcu_read_lock();

	dp = get_dp_rcu(net, dp_ifindex);

	rcu_read_unlock();



	return dp;

}



extern struct notifier_block ovs_dp_device_notifier;

extern struct genl_family dp_vport_genl_family;