text: /*-
   *   BSD LICENSE
   *
   *   Copyright 2015 6WIND S.A.
   *   Copyright 2015 Mellanox.
   *
   *   Redistribution and use in source and binary forms, with or without
   *   modification, are permitted provided that the following conditions
   *   are met:
   *
   *     * Redistributions of source code must retain the above copyright
   *       notice, this list of conditions and the following disclaimer.
   *     * Redistributions in binary form must reproduce the above copyright
   *       notice, this list of conditions and the following disclaimer in
   *       the documentation and/or other materials provided with the
   *       distribution.
   *     * Neither the name of 6WIND S.A. nor the names of its
   *       contributors may be used to endorse or promote products derived
   *       from this software without specific prior written permission.
   *
   *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
   *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
   *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
   *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  
  #include <stddef.h>
  #include <assert.h>
  #include <stdint.h>
  #include <string.h>
  #include <inttypes.h>
  #include <errno.h>
  #include <netinet/in.h>
  #include <sys/ioctl.h>
  #include <arpa/inet.h>
  
  /* Verbs header. */
  /* ISO C doesn't support unnamed structs/unions, disabling -pedantic. */
  #ifdef PEDANTIC
  #pragma GCC diagnostic ignored "-Wpedantic"
  #endif
  #include <infiniband/verbs.h>
  #ifdef PEDANTIC
  #pragma GCC diagnostic error "-Wpedantic"
  #endif
  
  #include <rte_ether.h>
  #include <rte_ethdev.h>
  #include <rte_common.h>
  
  #include "mlx5.h"
  #include "mlx5_utils.h"
  #include "mlx5_rxtx.h"
  #include "mlx5_defs.h"
  
  /**
   * Get MAC address by querying netdevice.
   *
   * @param[in] priv
   *   struct priv for the requested device.
   * @param[out] mac
   *   MAC address output buffer.
   *
   * @return
   *   0 on success, -1 on failure and errno is set.
   */
  int
  priv_get_mac(struct priv *priv, uint8_t (*mac)[ETHER_ADDR_LEN])
  {
  	struct ifreq request;
  
  	if (priv_ifreq(priv, SIOCGIFHWADDR, &request))
  		return -1;
  	memcpy(mac, request.ifr_hwaddr.sa_data, ETHER_ADDR_LEN);
  	return 0;
  }
  
  /**
   * DPDK callback to remove a MAC address.
   *
   * @param dev
   *   Pointer to Ethernet device structure.
   * @param index
   *   MAC address index.
   */
  void
  mlx5_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index)
  {
  	if (mlx5_is_secondary())
  		return;
  	assert(index < MLX5_MAX_MAC_ADDRESSES);
  	memset(&dev->data->mac_addrs[index], 0, sizeof(struct ether_addr));
  	if (!dev->data->promiscuous && !dev->data->all_multicast)
  		mlx5_traffic_restart(dev);
  }
  
  /**
   * DPDK callback to add a MAC address.
   *
   * @param dev
   *   Pointer to Ethernet device structure.
   * @param mac_addr
   *   MAC address to register.
   * @param index
   *   MAC address index.
   * @param vmdq
   *   VMDq pool index to associate address with (ignored).
   *
   * @return
   *   0 on success.
   */
  int
  mlx5_mac_addr_add(struct rte_eth_dev *dev, struct ether_addr *mac,
  		  uint32_t index, uint32_t vmdq)
  {
  	unsigned int i;
  	int ret = 0;
  
  	(void)vmdq;
  	if (mlx5_is_secondary())
  		return 0;
  	assert(index < MLX5_MAX_MAC_ADDRESSES);
  	/* First, make sure this address isn't already configured. */
  	for (i = 0; (i != MLX5_MAX_MAC_ADDRESSES); ++i) {
  		/* Skip this index, it's going to be reconfigured. */
  		if (i == index)
  			continue;
  		if (memcmp(&dev->data->mac_addrs[i], mac, sizeof(*mac)))
  			continue;
  		/* Address already configured elsewhere, return with error. */
  		return EADDRINUSE;
  	}
  	dev->data->mac_addrs[index] = *mac;
  	if (!dev->data->promiscuous && !dev->data->all_multicast)
  		mlx5_traffic_restart(dev);
  	return ret;
  }
  
  /**
   * DPDK callback to set primary MAC address.
   *
   * @param dev
   *   Pointer to Ethernet device structure.
   * @param mac_addr
   *   MAC address to register.
   */
  void
  mlx5_mac_addr_set(struct rte_eth_dev *dev, struct ether_addr *mac_addr)
  {
  	if (mlx5_is_secondary())
  		return;
  	DEBUG("%p: setting primary MAC address", (void *)dev);
  	mlx5_mac_addr_add(dev, mac_addr, 0, 0);
  }
  