const struct netdev_tunnel_config *
(*get_tunnel_config)(const struct netdev *netdev);
- /* Sends the 'size'-byte packet in 'buffer' on 'netdev'. Returns 0 if
- * successful, otherwise a positive errno value. Returns EAGAIN without
- * blocking if the packet cannot be queued immediately. Returns EMSGSIZE
- * if a partial packet was transmitted or if the packet is too big or too
- * small to transmit on the device.
+ /* Sends the buffer on 'netdev'.
+ * Returns 0 if successful, otherwise a positive errno value. Returns
+ * EAGAIN without blocking if the packet cannot be queued immediately.
+ * Returns EMSGSIZE if a partial packet was transmitted or if the packet
+ * is too big or too small to transmit on the device.
*
- * The caller retains ownership of 'buffer' in all cases.
+ * To retain ownership of 'buffer' caller can set may_steal to false.
*
* The network device is expected to maintain a packet transmission queue,
* so that the caller does not ordinarily have to do additional queuing of
* network device from being usefully used by the netdev-based "userspace
* datapath". It will also prevent the OVS implementation of bonding from
* working properly over 'netdev'.) */
- int (*send)(struct netdev *netdev, const void *buffer, size_t size);
+ int (*send)(struct netdev *netdev, struct ofpbuf *buffer, bool may_steal);
/* Registers with the poll loop to wake up from the next call to
* poll_block() when the packet transmission queue for 'netdev' has