2005-04-17 06:20:36 +08:00
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/*
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* INET An implementation of the TCP/IP protocol suite for the LINUX
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* operating system. INET is implemented using the BSD Socket
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* interface as the means of communication with the user level.
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*
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* Ethernet-type device handling.
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*
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* Version: @(#)eth.c 1.0.7 05/25/93
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*
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2005-05-06 07:16:16 +08:00
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* Authors: Ross Biro
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2005-04-17 06:20:36 +08:00
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* Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
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* Mark Evans, <evansmp@uhura.aston.ac.uk>
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* Florian La Roche, <rzsfl@rz.uni-sb.de>
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* Alan Cox, <gw4pts@gw4pts.ampr.org>
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2007-02-09 22:24:44 +08:00
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*
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2005-04-17 06:20:36 +08:00
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* Fixes:
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* Mr Linux : Arp problems
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* Alan Cox : Generic queue tidyup (very tiny here)
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* Alan Cox : eth_header ntohs should be htons
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* Alan Cox : eth_rebuild_header missing an htons and
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* minor other things.
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2007-02-09 22:24:44 +08:00
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* Tegge : Arp bug fixes.
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2005-04-17 06:20:36 +08:00
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* Florian : Removed many unnecessary functions, code cleanup
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* and changes for new arp and skbuff.
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* Alan Cox : Redid header building to reflect new format.
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* Alan Cox : ARP only when compiled with CONFIG_INET
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* Greg Page : 802.2 and SNAP stuff.
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* Alan Cox : MAC layer pointers/new format.
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* Paul Gortmaker : eth_copy_and_sum shouldn't csum padding.
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* Alan Cox : Protect against forwarding explosions with
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* older network drivers and IFF_ALLMULTI.
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* Christer Weinigel : Better rebuild header message.
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* Andrew Morton : 26Feb01: kill ether_setup() - use netdev_boot_setup().
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#include <linux/module.h>
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#include <linux/types.h>
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#include <linux/kernel.h>
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#include <linux/string.h>
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#include <linux/mm.h>
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#include <linux/socket.h>
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#include <linux/in.h>
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#include <linux/inet.h>
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#include <linux/ip.h>
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#include <linux/netdevice.h>
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#include <linux/etherdevice.h>
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#include <linux/skbuff.h>
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#include <linux/errno.h>
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#include <linux/init.h>
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2006-01-06 08:35:42 +08:00
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#include <linux/if_ether.h>
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2005-04-17 06:20:36 +08:00
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#include <net/dst.h>
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#include <net/arp.h>
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#include <net/sock.h>
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#include <net/ipv6.h>
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#include <net/ip.h>
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2008-10-07 21:45:02 +08:00
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#include <net/dsa.h>
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2013-09-20 00:06:50 +08:00
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#include <linux/uaccess.h>
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2005-04-17 06:20:36 +08:00
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__setup("ether=", netdev_boot_setup);
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2006-08-18 09:18:53 +08:00
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/**
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* eth_header - create the Ethernet header
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* @skb: buffer to alter
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* @dev: source device
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* @type: Ethernet type field
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* @daddr: destination address (NULL leave destination address)
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* @saddr: source address (NULL use device source address)
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* @len: packet length (<= skb->len)
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2005-04-17 06:20:36 +08:00
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*
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2006-08-18 09:18:53 +08:00
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*
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2009-12-26 19:50:59 +08:00
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* Set the protocol type. For a packet of type ETH_P_802_3/2 we put the length
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* in here instead.
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2005-04-17 06:20:36 +08:00
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*/
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2007-10-09 16:40:57 +08:00
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int eth_header(struct sk_buff *skb, struct net_device *dev,
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unsigned short type,
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2012-04-15 13:58:06 +08:00
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const void *daddr, const void *saddr, unsigned int len)
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2005-04-17 06:20:36 +08:00
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{
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2006-08-18 09:20:18 +08:00
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struct ethhdr *eth = (struct ethhdr *)skb_push(skb, ETH_HLEN);
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2005-04-17 06:20:36 +08:00
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2009-12-26 19:50:59 +08:00
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if (type != ETH_P_802_3 && type != ETH_P_802_2)
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2005-04-17 06:20:36 +08:00
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eth->h_proto = htons(type);
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else
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eth->h_proto = htons(len);
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/*
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2006-08-18 09:20:18 +08:00
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* Set the source hardware address.
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2005-04-17 06:20:36 +08:00
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*/
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2006-08-18 09:20:18 +08:00
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if (!saddr)
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2005-06-29 06:49:06 +08:00
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saddr = dev->dev_addr;
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2007-08-25 13:35:44 +08:00
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memcpy(eth->h_source, saddr, ETH_ALEN);
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2005-04-17 06:20:36 +08:00
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2006-08-18 09:20:18 +08:00
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if (daddr) {
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2007-08-25 13:35:44 +08:00
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memcpy(eth->h_dest, daddr, ETH_ALEN);
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2006-02-24 08:18:01 +08:00
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return ETH_HLEN;
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}
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2006-08-18 09:20:18 +08:00
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2005-04-17 06:20:36 +08:00
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/*
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2006-08-18 09:20:18 +08:00
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* Anyway, the loopback-device should never use this function...
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2005-04-17 06:20:36 +08:00
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*/
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2006-08-18 09:20:18 +08:00
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if (dev->flags & (IFF_LOOPBACK | IFF_NOARP)) {
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2007-08-25 13:35:44 +08:00
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memset(eth->h_dest, 0, ETH_ALEN);
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2005-04-17 06:20:36 +08:00
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return ETH_HLEN;
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}
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2006-08-18 09:20:18 +08:00
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2005-04-17 06:20:36 +08:00
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return -ETH_HLEN;
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}
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2007-10-09 16:40:57 +08:00
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EXPORT_SYMBOL(eth_header);
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2005-04-17 06:20:36 +08:00
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2006-08-18 09:18:53 +08:00
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/**
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* eth_rebuild_header- rebuild the Ethernet MAC header.
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* @skb: socket buffer to update
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*
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* This is called after an ARP or IPV6 ndisc it's resolution on this
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* sk_buff. We now let protocol (ARP) fill in the other fields.
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2005-04-17 06:20:36 +08:00
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*
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2006-08-18 09:18:53 +08:00
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* This routine CANNOT use cached dst->neigh!
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* Really, it is used only when dst->neigh is wrong.
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2005-04-17 06:20:36 +08:00
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*/
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int eth_rebuild_header(struct sk_buff *skb)
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{
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struct ethhdr *eth = (struct ethhdr *)skb->data;
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struct net_device *dev = skb->dev;
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2006-08-18 09:20:18 +08:00
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switch (eth->h_proto) {
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2005-04-17 06:20:36 +08:00
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#ifdef CONFIG_INET
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2008-09-21 13:20:49 +08:00
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case htons(ETH_P_IP):
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2006-08-18 09:20:18 +08:00
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return arp_find(eth->h_dest, skb);
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#endif
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2005-04-17 06:20:36 +08:00
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default:
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2013-09-20 00:06:50 +08:00
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netdev_dbg(dev,
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2006-08-18 09:20:18 +08:00
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"%s: unable to resolve type %X addresses.\n",
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2010-04-21 05:06:07 +08:00
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dev->name, ntohs(eth->h_proto));
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2006-08-18 09:20:18 +08:00
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2007-08-25 13:35:44 +08:00
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memcpy(eth->h_source, dev->dev_addr, ETH_ALEN);
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2005-04-17 06:20:36 +08:00
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break;
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}
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return 0;
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}
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2007-10-09 16:40:57 +08:00
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EXPORT_SYMBOL(eth_rebuild_header);
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2005-04-17 06:20:36 +08:00
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2006-08-18 09:18:53 +08:00
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/**
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* eth_type_trans - determine the packet's protocol ID.
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* @skb: received socket data
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* @dev: receiving network device
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*
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* The rule here is that we
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* assume 802.3 if the type field is short enough to be a length.
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* This is normal practice and works for any 'now in use' protocol.
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2005-04-17 06:20:36 +08:00
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*/
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2005-07-13 03:08:43 +08:00
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__be16 eth_type_trans(struct sk_buff *skb, struct net_device *dev)
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2005-04-17 06:20:36 +08:00
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{
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2014-01-17 07:03:31 +08:00
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unsigned short _service_access_point;
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const unsigned short *sap;
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const struct ethhdr *eth;
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2006-08-18 09:20:18 +08:00
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2007-04-26 08:40:23 +08:00
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skb->dev = dev;
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2007-03-20 06:30:44 +08:00
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skb_reset_mac_header(skb);
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2010-05-02 17:21:44 +08:00
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skb_pull_inline(skb, ETH_HLEN);
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2005-04-17 06:20:36 +08:00
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eth = eth_hdr(skb);
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2006-08-18 09:20:18 +08:00
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eth: Declare an optimized compare_ether_addr_64bits() function
Linus mentioned we could try to perform long word operations, even
on potentially unaligned addresses, on x86 at least. David mentioned
the HAVE_EFFICIENT_UNALIGNED_ACCESS test to handle this on all
arches that have efficient unailgned accesses.
I tried this idea and got nice assembly on 32 bits:
158: 33 82 38 01 00 00 xor 0x138(%edx),%eax
15e: 33 8a 34 01 00 00 xor 0x134(%edx),%ecx
164: c1 e0 10 shl $0x10,%eax
167: 09 c1 or %eax,%ecx
169: 74 0b je 176 <eth_type_trans+0x87>
And very nice assembly on 64 bits of course (one xor, one shl)
Nice oprofile improvement in eth_type_trans(), 0.17 % instead of 0.41 %,
expected since we remove 8 instructions on a fast path.
This patch implements a compare_ether_addr_64bits() function, that
uses the CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS ifdef to efficiently
perform the 6 bytes comparison on all capable arches.
Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-24 15:24:32 +08:00
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if (unlikely(is_multicast_ether_addr(eth->h_dest))) {
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net, drivers/net: Convert compare_ether_addr_64bits to ether_addr_equal_64bits
Use the new bool function ether_addr_equal_64bits to add
some clarity and reduce the likelihood for misuse of
compare_ether_addr_64bits for sorting.
Done via cocci script:
$ cat compare_ether_addr_64bits.cocci
@@
expression a,b;
@@
- !compare_ether_addr_64bits(a, b)
+ ether_addr_equal_64bits(a, b)
@@
expression a,b;
@@
- compare_ether_addr_64bits(a, b)
+ !ether_addr_equal_64bits(a, b)
@@
expression a,b;
@@
- !ether_addr_equal_64bits(a, b) == 0
+ ether_addr_equal_64bits(a, b)
@@
expression a,b;
@@
- !ether_addr_equal_64bits(a, b) != 0
+ !ether_addr_equal_64bits(a, b)
@@
expression a,b;
@@
- ether_addr_equal_64bits(a, b) == 0
+ !ether_addr_equal_64bits(a, b)
@@
expression a,b;
@@
- ether_addr_equal_64bits(a, b) != 0
+ ether_addr_equal_64bits(a, b)
@@
expression a,b;
@@
- !!ether_addr_equal_64bits(a, b)
+ ether_addr_equal_64bits(a, b)
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-10 01:04:04 +08:00
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if (ether_addr_equal_64bits(eth->h_dest, dev->broadcast))
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2005-09-28 07:03:05 +08:00
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skb->pkt_type = PACKET_BROADCAST;
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2005-04-17 06:20:36 +08:00
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else
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2005-09-28 07:03:05 +08:00
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skb->pkt_type = PACKET_MULTICAST;
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2005-04-17 06:20:36 +08:00
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}
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2013-09-28 08:19:41 +08:00
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else if (unlikely(!ether_addr_equal_64bits(eth->h_dest,
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dev->dev_addr)))
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skb->pkt_type = PACKET_OTHERHOST;
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2006-08-18 09:20:18 +08:00
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2008-10-07 21:45:02 +08:00
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/*
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* Some variants of DSA tagging don't have an ethertype field
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* at all, so we check here whether one of those tagging
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* variants has been configured on the receiving interface,
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* and if so, set skb->protocol without looking at the packet.
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*/
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2013-09-28 08:21:27 +08:00
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if (unlikely(netdev_uses_dsa_tags(dev)))
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2008-10-07 21:45:02 +08:00
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return htons(ETH_P_DSA);
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2013-09-28 08:21:27 +08:00
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if (unlikely(netdev_uses_trailer_tags(dev)))
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2008-10-07 21:46:07 +08:00
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return htons(ETH_P_TRAILER);
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2008-10-07 21:45:02 +08:00
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2013-09-28 08:21:27 +08:00
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if (likely(ntohs(eth->h_proto) >= ETH_P_802_3_MIN))
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2005-04-17 06:20:36 +08:00
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return eth->h_proto;
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2006-08-18 09:20:18 +08:00
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2005-04-17 06:20:36 +08:00
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/*
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2006-08-18 09:20:18 +08:00
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* This is a magic hack to spot IPX packets. Older Novell breaks
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* the protocol design and runs IPX over 802.3 without an 802.2 LLC
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* layer. We look for FFFF which isn't a used 802.2 SSAP/DSAP. This
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* won't work for fault tolerant netware but does for the rest.
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2005-04-17 06:20:36 +08:00
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*/
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2014-01-17 07:03:31 +08:00
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sap = skb_header_pointer(skb, 0, sizeof(*sap), &_service_access_point);
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if (sap && *sap == 0xFFFF)
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2005-04-17 06:20:36 +08:00
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return htons(ETH_P_802_3);
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2006-08-18 09:20:18 +08:00
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2005-04-17 06:20:36 +08:00
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/*
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2006-08-18 09:20:18 +08:00
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* Real 802.2 LLC
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2005-04-17 06:20:36 +08:00
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*/
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return htons(ETH_P_802_2);
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}
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2006-08-18 09:20:18 +08:00
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EXPORT_SYMBOL(eth_type_trans);
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2005-04-17 06:20:36 +08:00
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2006-08-18 09:18:53 +08:00
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/**
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* eth_header_parse - extract hardware address from packet
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* @skb: packet to extract header from
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* @haddr: destination buffer
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*/
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2007-10-09 16:40:57 +08:00
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int eth_header_parse(const struct sk_buff *skb, unsigned char *haddr)
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2005-04-17 06:20:36 +08:00
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{
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2007-09-27 13:13:38 +08:00
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const struct ethhdr *eth = eth_hdr(skb);
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2005-04-17 06:20:36 +08:00
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memcpy(haddr, eth->h_source, ETH_ALEN);
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return ETH_ALEN;
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}
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2007-10-09 16:40:57 +08:00
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EXPORT_SYMBOL(eth_header_parse);
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2005-04-17 06:20:36 +08:00
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2006-08-18 09:18:53 +08:00
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/**
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* eth_header_cache - fill cache entry from neighbour
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* @neigh: source neighbour
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* @hh: destination cache entry
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2011-07-26 07:17:01 +08:00
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* @type: Ethernet type field
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2012-07-10 18:55:09 +08:00
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*
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2006-08-18 09:18:53 +08:00
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* Create an Ethernet header template from the neighbour.
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*/
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2011-07-13 14:28:12 +08:00
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int eth_header_cache(const struct neighbour *neigh, struct hh_cache *hh, __be16 type)
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2005-04-17 06:20:36 +08:00
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{
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struct ethhdr *eth;
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2007-10-09 16:40:57 +08:00
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const struct net_device *dev = neigh->dev;
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2005-04-17 06:20:36 +08:00
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2006-08-18 09:20:18 +08:00
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eth = (struct ethhdr *)
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(((u8 *) hh->hh_data) + (HH_DATA_OFF(sizeof(*eth))));
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2005-04-17 06:20:36 +08:00
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2007-03-07 13:19:03 +08:00
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if (type == htons(ETH_P_802_3))
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2005-04-17 06:20:36 +08:00
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return -1;
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eth->h_proto = type;
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2007-08-25 13:35:44 +08:00
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memcpy(eth->h_source, dev->dev_addr, ETH_ALEN);
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|
|
|
memcpy(eth->h_dest, neigh->ha, ETH_ALEN);
|
2005-04-17 06:20:36 +08:00
|
|
|
hh->hh_len = ETH_HLEN;
|
|
|
|
return 0;
|
|
|
|
}
|
2007-10-09 16:40:57 +08:00
|
|
|
EXPORT_SYMBOL(eth_header_cache);
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2006-08-18 09:18:53 +08:00
|
|
|
/**
|
|
|
|
* eth_header_cache_update - update cache entry
|
|
|
|
* @hh: destination cache entry
|
|
|
|
* @dev: network device
|
|
|
|
* @haddr: new hardware address
|
|
|
|
*
|
2005-04-17 06:20:36 +08:00
|
|
|
* Called by Address Resolution module to notify changes in address.
|
|
|
|
*/
|
2007-10-09 16:40:57 +08:00
|
|
|
void eth_header_cache_update(struct hh_cache *hh,
|
|
|
|
const struct net_device *dev,
|
|
|
|
const unsigned char *haddr)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
2006-08-18 09:20:18 +08:00
|
|
|
memcpy(((u8 *) hh->hh_data) + HH_DATA_OFF(sizeof(struct ethhdr)),
|
2007-08-25 13:35:44 +08:00
|
|
|
haddr, ETH_ALEN);
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
2007-10-09 16:40:57 +08:00
|
|
|
EXPORT_SYMBOL(eth_header_cache_update);
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2013-01-21 09:17:22 +08:00
|
|
|
/**
|
|
|
|
* eth_prepare_mac_addr_change - prepare for mac change
|
|
|
|
* @dev: network device
|
|
|
|
* @p: socket address
|
|
|
|
*/
|
|
|
|
int eth_prepare_mac_addr_change(struct net_device *dev, void *p)
|
|
|
|
{
|
|
|
|
struct sockaddr *addr = p;
|
|
|
|
|
|
|
|
if (!(dev->priv_flags & IFF_LIVE_ADDR_CHANGE) && netif_running(dev))
|
|
|
|
return -EBUSY;
|
|
|
|
if (!is_valid_ether_addr(addr->sa_data))
|
|
|
|
return -EADDRNOTAVAIL;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(eth_prepare_mac_addr_change);
|
|
|
|
|
|
|
|
/**
|
|
|
|
* eth_commit_mac_addr_change - commit mac change
|
|
|
|
* @dev: network device
|
|
|
|
* @p: socket address
|
|
|
|
*/
|
|
|
|
void eth_commit_mac_addr_change(struct net_device *dev, void *p)
|
|
|
|
{
|
|
|
|
struct sockaddr *addr = p;
|
|
|
|
|
|
|
|
memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(eth_commit_mac_addr_change);
|
|
|
|
|
2006-08-18 09:18:53 +08:00
|
|
|
/**
|
|
|
|
* eth_mac_addr - set new Ethernet hardware address
|
|
|
|
* @dev: network device
|
|
|
|
* @p: socket address
|
2012-07-10 18:55:09 +08:00
|
|
|
*
|
2006-08-18 09:18:53 +08:00
|
|
|
* Change hardware address of device.
|
|
|
|
*
|
|
|
|
* This doesn't change hardware matching, so needs to be overridden
|
|
|
|
* for most real devices.
|
|
|
|
*/
|
2008-11-20 14:42:31 +08:00
|
|
|
int eth_mac_addr(struct net_device *dev, void *p)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
2013-01-21 09:17:22 +08:00
|
|
|
int ret;
|
2007-07-12 10:41:18 +08:00
|
|
|
|
2013-01-21 09:17:22 +08:00
|
|
|
ret = eth_prepare_mac_addr_change(dev, p);
|
|
|
|
if (ret < 0)
|
|
|
|
return ret;
|
|
|
|
eth_commit_mac_addr_change(dev, p);
|
2005-04-17 06:20:36 +08:00
|
|
|
return 0;
|
|
|
|
}
|
2008-11-20 14:42:31 +08:00
|
|
|
EXPORT_SYMBOL(eth_mac_addr);
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2006-08-18 09:18:53 +08:00
|
|
|
/**
|
|
|
|
* eth_change_mtu - set new MTU size
|
|
|
|
* @dev: network device
|
|
|
|
* @new_mtu: new Maximum Transfer Unit
|
|
|
|
*
|
|
|
|
* Allow changing MTU size. Needs to be overridden for devices
|
|
|
|
* supporting jumbo frames.
|
|
|
|
*/
|
2008-11-20 14:42:31 +08:00
|
|
|
int eth_change_mtu(struct net_device *dev, int new_mtu)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
2006-01-06 08:35:42 +08:00
|
|
|
if (new_mtu < 68 || new_mtu > ETH_DATA_LEN)
|
2005-04-17 06:20:36 +08:00
|
|
|
return -EINVAL;
|
|
|
|
dev->mtu = new_mtu;
|
|
|
|
return 0;
|
|
|
|
}
|
2008-11-20 14:42:31 +08:00
|
|
|
EXPORT_SYMBOL(eth_change_mtu);
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2008-11-20 14:42:31 +08:00
|
|
|
int eth_validate_addr(struct net_device *dev)
|
2007-10-24 11:19:37 +08:00
|
|
|
{
|
|
|
|
if (!is_valid_ether_addr(dev->dev_addr))
|
2008-04-14 13:45:40 +08:00
|
|
|
return -EADDRNOTAVAIL;
|
2007-10-24 11:19:37 +08:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
2008-11-20 14:42:31 +08:00
|
|
|
EXPORT_SYMBOL(eth_validate_addr);
|
2007-10-24 11:19:37 +08:00
|
|
|
|
2007-10-09 16:40:57 +08:00
|
|
|
const struct header_ops eth_header_ops ____cacheline_aligned = {
|
|
|
|
.create = eth_header,
|
|
|
|
.parse = eth_header_parse,
|
|
|
|
.rebuild = eth_rebuild_header,
|
|
|
|
.cache = eth_header_cache,
|
|
|
|
.cache_update = eth_header_cache_update,
|
|
|
|
};
|
|
|
|
|
2006-08-18 09:18:53 +08:00
|
|
|
/**
|
|
|
|
* ether_setup - setup Ethernet network device
|
|
|
|
* @dev: network device
|
2012-07-10 18:55:09 +08:00
|
|
|
*
|
2006-08-18 09:18:53 +08:00
|
|
|
* Fill in the fields of the device structure with Ethernet-generic values.
|
2005-04-17 06:20:36 +08:00
|
|
|
*/
|
|
|
|
void ether_setup(struct net_device *dev)
|
|
|
|
{
|
2007-10-09 16:40:57 +08:00
|
|
|
dev->header_ops = ð_header_ops;
|
2005-04-17 06:20:36 +08:00
|
|
|
dev->type = ARPHRD_ETHER;
|
|
|
|
dev->hard_header_len = ETH_HLEN;
|
2006-01-06 08:35:42 +08:00
|
|
|
dev->mtu = ETH_DATA_LEN;
|
2005-04-17 06:20:36 +08:00
|
|
|
dev->addr_len = ETH_ALEN;
|
2007-02-09 22:24:44 +08:00
|
|
|
dev->tx_queue_len = 1000; /* Ethernet wants good queues */
|
2005-04-17 06:20:36 +08:00
|
|
|
dev->flags = IFF_BROADCAST|IFF_MULTICAST;
|
2011-09-14 11:05:02 +08:00
|
|
|
dev->priv_flags |= IFF_TX_SKB_SHARING;
|
2007-02-09 22:24:44 +08:00
|
|
|
|
2006-08-18 09:20:18 +08:00
|
|
|
memset(dev->broadcast, 0xFF, ETH_ALEN);
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(ether_setup);
|
|
|
|
|
|
|
|
/**
|
2011-01-10 03:36:31 +08:00
|
|
|
* alloc_etherdev_mqs - Allocates and sets up an Ethernet device
|
2005-04-17 06:20:36 +08:00
|
|
|
* @sizeof_priv: Size of additional driver-private structure to be allocated
|
2006-08-18 09:18:53 +08:00
|
|
|
* for this Ethernet device
|
2011-01-10 03:36:31 +08:00
|
|
|
* @txqs: The number of TX queues this device has.
|
2011-01-12 22:50:51 +08:00
|
|
|
* @rxqs: The number of RX queues this device has.
|
2005-04-17 06:20:36 +08:00
|
|
|
*
|
2006-08-18 09:18:53 +08:00
|
|
|
* Fill in the fields of the device structure with Ethernet-generic
|
2005-04-17 06:20:36 +08:00
|
|
|
* values. Basically does everything except registering the device.
|
|
|
|
*
|
|
|
|
* Constructs a new net device, complete with a private data area of
|
2006-08-18 09:18:53 +08:00
|
|
|
* size (sizeof_priv). A 32-byte (not bit) alignment is enforced for
|
2005-04-17 06:20:36 +08:00
|
|
|
* this private data area.
|
|
|
|
*/
|
|
|
|
|
2011-01-10 03:36:31 +08:00
|
|
|
struct net_device *alloc_etherdev_mqs(int sizeof_priv, unsigned int txqs,
|
|
|
|
unsigned int rxqs)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
2011-01-10 03:36:31 +08:00
|
|
|
return alloc_netdev_mqs(sizeof_priv, "eth%d", ether_setup, txqs, rxqs);
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
2011-01-10 03:36:31 +08:00
|
|
|
EXPORT_SYMBOL(alloc_etherdev_mqs);
|
2007-10-04 08:59:30 +08:00
|
|
|
|
2007-12-25 13:28:09 +08:00
|
|
|
ssize_t sysfs_format_mac(char *buf, const unsigned char *addr, int len)
|
|
|
|
{
|
2013-07-17 08:09:15 +08:00
|
|
|
return scnprintf(buf, PAGE_SIZE, "%*phC\n", len, addr);
|
2007-12-25 13:28:09 +08:00
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(sysfs_format_mac);
|