lib/ethdev/ethdev_vdev.h

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2017 Brocade Communications Systems, Inc.
   3  *   Author: Jan Blunck <jblunck@infradead.org>
   4  */
   5
   6 #ifndef _RTE_ETHDEV_VDEV_H_
   7 #define _RTE_ETHDEV_VDEV_H_
   8
   9 #include <rte_config.h>
  10 #include <rte_malloc.h>
  11 #include <rte_bus_vdev.h>
  12 #include <ethdev_driver.h>
  13
  14 /**
  15  * @internal
  16  * Allocates a new ethdev slot for an ethernet device and returns the pointer
  17  * to that slot for the driver to use.
  18  *
  19  * @param dev
  20  *      Pointer to virtual device
  21  *
  22  * @param private_data_size
  23  *      Size of private data structure
  24  *
  25  * @return
  26  *      A pointer to a rte_eth_dev or NULL if allocation failed.
  27  */
  28 static inline struct rte_eth_dev *
  29 rte_eth_vdev_allocate(struct rte_vdev_device *dev, size_t private_data_size)
  30 {
  31         struct rte_eth_dev *eth_dev;
  32         const char *name = rte_vdev_device_name(dev);
  33
  34         eth_dev = rte_eth_dev_allocate(name);
  35         if (!eth_dev)
  36                 return NULL;
  37
  38         if (private_data_size) {
  39                 eth_dev->data->dev_private = rte_zmalloc_socket(name,
  40                         private_data_size, RTE_CACHE_LINE_SIZE,
  41                         dev->device.numa_node);
  42                 if (!eth_dev->data->dev_private) {
  43                         rte_eth_dev_release_port(eth_dev);
  44                         return NULL;
  45                 }
  46         }
  47
  48         eth_dev->device = &dev->device;
  49         eth_dev->intr_handle = NULL;
  50
  51         eth_dev->data->numa_node = dev->device.numa_node;
  52         return eth_dev;
  53 }
  54
  55 #endif /* _RTE_ETHDEV_VDEV_H_ */