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 #ifdef __cplusplus
  10 extern "C" {
  11 #endif
  12
  13 #include <rte_config.h>
  14 #include <rte_malloc.h>
  15 #include <rte_bus_vdev.h>
  16 #include <ethdev_driver.h>
  17
  18 /**
  19  * @internal
  20  * Allocates a new ethdev slot for an Ethernet device and returns the pointer
  21  * to that slot for the driver to use.
  22  *
  23  * @param dev
  24  *      Pointer to virtual device
  25  *
  26  * @param private_data_size
  27  *      Size of private data structure
  28  *
  29  * @return
  30  *      A pointer to a rte_eth_dev or NULL if allocation failed.
  31  */
  32 static inline struct rte_eth_dev *
  33 rte_eth_vdev_allocate(struct rte_vdev_device *dev, size_t private_data_size)
  34 {
  35         struct rte_eth_dev *eth_dev;
  36         const char *name = rte_vdev_device_name(dev);
  37
  38         eth_dev = rte_eth_dev_allocate(name);
  39         if (!eth_dev)
  40                 return NULL;
  41
  42         if (private_data_size) {
  43                 eth_dev->data->dev_private = rte_zmalloc_socket(name,
  44                         private_data_size, RTE_CACHE_LINE_SIZE,
  45                         dev->device.numa_node);
  46                 if (!eth_dev->data->dev_private) {
  47                         rte_eth_dev_release_port(eth_dev);
  48                         return NULL;
  49                 }
  50         }
  51
  52         eth_dev->device = &dev->device;
  53         eth_dev->intr_handle = NULL;
  54
  55         eth_dev->data->numa_node = dev->device.numa_node;
  56         return eth_dev;
  57 }
  58
  59 #ifdef __cplusplus
  60 }
  61 #endif
  62
  63 #endif /* _RTE_ETHDEV_VDEV_H_ */