drivers/net/ethernet/intel/fm10k/fm10k_netdev.c

   1 /* Intel Ethernet Switch Host Interface Driver
   2  * Copyright(c) 2013 - 2014 Intel Corporation.
   3  *
   4  * This program is free software; you can redistribute it and/or modify it
   5  * under the terms and conditions of the GNU General Public License,
   6  * version 2, as published by the Free Software Foundation.
   7  *
   8  * This program is distributed in the hope it will be useful, but WITHOUT
   9  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  10  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  11  * more details.
  12  *
  13  * The full GNU General Public License is included in this distribution in
  14  * the file called "COPYING".
  15  *
  16  * Contact Information:
  17  * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
  18  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  19  */
  20
  21 #include "fm10k.h"
  22
  23 static netdev_tx_t fm10k_xmit_frame(struct sk_buff *skb, struct net_device *dev)
  24 {
  25         dev_kfree_skb_any(skb);
  26         return NETDEV_TX_OK;
  27 }
  28
  29 static int fm10k_change_mtu(struct net_device *dev, int new_mtu)
  30 {
  31         if (new_mtu < 68 || new_mtu > FM10K_MAX_JUMBO_FRAME_SIZE)
  32                 return -EINVAL;
  33
  34         dev->mtu = new_mtu;
  35
  36         return 0;
  37 }
  38
  39 static int fm10k_set_mac(struct net_device *dev, void *p)
  40 {
  41         struct sockaddr *addr = p;
  42         s32 err = 0;
  43
  44         if (!is_valid_ether_addr(addr->sa_data))
  45                 return -EADDRNOTAVAIL;
  46
  47         if (!err) {
  48                 ether_addr_copy(dev->dev_addr, addr->sa_data);
  49                 dev->addr_assign_type &= ~NET_ADDR_RANDOM;
  50         }
  51
  52         return err;
  53 }
  54
  55 static void fm10k_set_rx_mode(struct net_device *dev)
  56 {
  57 }
  58
  59 static const struct net_device_ops fm10k_netdev_ops = {
  60         .ndo_validate_addr      = eth_validate_addr,
  61         .ndo_start_xmit         = fm10k_xmit_frame,
  62         .ndo_set_mac_address    = fm10k_set_mac,
  63         .ndo_change_mtu         = fm10k_change_mtu,
  64         .ndo_set_rx_mode        = fm10k_set_rx_mode,
  65 };
  66
  67 #define DEFAULT_DEBUG_LEVEL_SHIFT 3
  68
  69 struct net_device *fm10k_alloc_netdev(void)
  70 {
  71         struct fm10k_intfc *interface;
  72         struct net_device *dev;
  73
  74         dev = alloc_etherdev(sizeof(struct fm10k_intfc));
  75         if (!dev)
  76                 return NULL;
  77
  78         /* set net device and ethtool ops */
  79         dev->netdev_ops = &fm10k_netdev_ops;
  80
  81         /* configure default debug level */
  82         interface = netdev_priv(dev);
  83         interface->msg_enable = (1 << DEFAULT_DEBUG_LEVEL_SHIFT) - 1;
  84
  85         /* configure default features */
  86         dev->features |= NETIF_F_SG;
  87
  88         /* all features defined to this point should be changeable */
  89         dev->hw_features |= dev->features;
  90
  91         /* configure VLAN features */
  92         dev->vlan_features |= dev->features;
  93
  94         /* configure tunnel offloads */
  95         dev->hw_enc_features = NETIF_F_SG;
  96
  97         return dev;
  98 }