X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=datapath%2Fvport.h;h=8e70762853f4ce0217a6ee32b9d58a36ff3db0f3;hb=d19cedb28fa32091d149749d326707d8405cbbb6;hp=87d561536c14d4f6e42a405d3170ebfb0cf0b68a;hpb=f7cd0081f525dd1d45fafc68397b5393196e978d;p=openvswitch

diff --git a/datapath/vport.h b/datapath/vport.h
index 87d56153..8e707628 100644
--- a/datapath/vport.h
+++ b/datapath/vport.h
@@ -22,9 +22,6 @@ struct vport_parms;
 
 /* The following definitions are for users of the vport subsytem: */
 
-void vport_lock(void);
-void vport_unlock(void);
-
 int vport_init(void);
 void vport_exit(void);
 
@@ -77,6 +74,7 @@ struct vport_err_stats {
 
 /**
  * struct vport - one port within a datapath
+ * @rcu: RCU callback head for deferred destruction.
  * @port_no: Index into @dp's @ports array.
  * @dp: Datapath to which this port belongs.
  * @kobj: Represents /sys/class/net/<devname>/brport.
@@ -97,6 +95,7 @@ struct vport_err_stats {
  * XAPI for Citrix XenServer.  Deprecated.
  */
 struct vport {
+	struct rcu_head rcu;
 	u16 port_no;
 	struct datapath	*dp;
 	struct kobject kobj;
@@ -151,7 +150,8 @@ struct vport_parms {
  * @exit: Called at module unload.
  * @create: Create a new vport configured as specified.  On success returns
  * a new vport allocated with vport_alloc(), otherwise an ERR_PTR() value.
- * @destroy: Detach and destroy a vport.
+ * @destroy: Destroys a vport.  Must call vport_free() on the vport but not
+ * before an RCU grace period has elapsed.
  * @set_options: Modify the configuration of an existing vport.  May be %NULL
  * if modification is not supported.
  * @get_options: Appends vport-specific attributes for the configuration of an
@@ -175,7 +175,8 @@ struct vport_parms {
  * @get_iflink: Get the system interface index associated with the device that
  * will be used to send packets (may be different than ifindex for tunnels).
  * May be null if the device does not have an iflink.
- * @get_mtu: Get the device's MTU.
+ * @get_mtu: Get the device's MTU.  May be %NULL if the device does not have an
+ * MTU (as e.g. some tunnels do not).
  * @send: Send a packet on the device.  Returns the length of the packet sent.
  */
 struct vport_ops {