forked from mirrors/linux
6d6c1ba782
There are a few places in the tree which compute the length of the string representation of a MAC address as 3 * ETH_ALEN - 1. Define a constant for this and use it where relevant. No functionality changes are expected. Signed-off-by: Uday Shankar <ushankar@purestorage.com> Reviewed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com> Acked-by: Johannes Berg <johannes@sipsolutions.net> Reviewed-by: Breno Leitao <leitao@debian.org> Reviewed-by: Simon Horman <horms@verge.net.au> Link: https://patch.msgid.link/20250312-netconsole-v6-1-3437933e79b8@purestorage.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
47 lines
1.3 KiB
C
47 lines
1.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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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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* Global definitions for the Ethernet IEEE 802.3 interface.
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*
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* Version: @(#)if_ether.h 1.0.1a 02/08/94
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*
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* Author: Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
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* Donald Becker, <becker@super.org>
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* Alan Cox, <alan@lxorguk.ukuu.org.uk>
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* Steve Whitehouse, <gw7rrm@eeshack3.swan.ac.uk>
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*/
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#ifndef _LINUX_IF_ETHER_H
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#define _LINUX_IF_ETHER_H
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#include <linux/skbuff.h>
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#include <uapi/linux/if_ether.h>
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/* XX:XX:XX:XX:XX:XX */
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#define MAC_ADDR_STR_LEN (3 * ETH_ALEN - 1)
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static inline struct ethhdr *eth_hdr(const struct sk_buff *skb)
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{
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return (struct ethhdr *)skb_mac_header(skb);
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}
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/* Prefer this version in TX path, instead of
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* skb_reset_mac_header() + eth_hdr()
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*/
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static inline struct ethhdr *skb_eth_hdr(const struct sk_buff *skb)
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{
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return (struct ethhdr *)skb->data;
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}
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static inline struct ethhdr *inner_eth_hdr(const struct sk_buff *skb)
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{
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return (struct ethhdr *)skb_inner_mac_header(skb);
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}
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int eth_header_parse(const struct sk_buff *skb, unsigned char *haddr);
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extern ssize_t sysfs_format_mac(char *buf, const unsigned char *addr, int len);
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#endif /* _LINUX_IF_ETHER_H */
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