mirror of
git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs.git
synced 2026-10-30 13:52:50 +01:00
Uday Shankar
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 <[email protected]> Reviewed-by: Michal Swiatkowski <[email protected]> Acked-by: Johannes Berg <[email protected]> Reviewed-by: Breno Leitao <[email protected]> Reviewed-by: Simon Horman <[email protected]> Link: https://patch.msgid.link/[email protected] Signed-off-by: Paolo Abeni <[email protected]>
48 lines
1.3 KiB
C
48 lines
1.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
|
|
/*
|
|
* INET An implementation of the TCP/IP protocol suite for the LINUX
|
|
* operating system. INET is implemented using the BSD Socket
|
|
* interface as the means of communication with the user level.
|
|
*
|
|
* Global definitions for the Ethernet IEEE 802.3 interface.
|
|
*
|
|
* Version: @(#)if_ether.h 1.0.1a 02/08/94
|
|
*
|
|
* Author: Fred N. van Kempen, <[email protected]>
|
|
* Donald Becker, <[email protected]>
|
|
* Alan Cox, <[email protected]>
|
|
* Steve Whitehouse, <[email protected]>
|
|
*/
|
|
#ifndef _LINUX_IF_ETHER_H
|
|
#define _LINUX_IF_ETHER_H
|
|
|
|
#include <linux/skbuff.h>
|
|
#include <uapi/linux/if_ether.h>
|
|
|
|
/* XX:XX:XX:XX:XX:XX */
|
|
#define MAC_ADDR_STR_LEN (3 * ETH_ALEN - 1)
|
|
|
|
static inline struct ethhdr *eth_hdr(const struct sk_buff *skb)
|
|
{
|
|
return (struct ethhdr *)skb_mac_header(skb);
|
|
}
|
|
|
|
/* Prefer this version in TX path, instead of
|
|
* skb_reset_mac_header() + eth_hdr()
|
|
*/
|
|
static inline struct ethhdr *skb_eth_hdr(const struct sk_buff *skb)
|
|
{
|
|
return (struct ethhdr *)skb->data;
|
|
}
|
|
|
|
static inline struct ethhdr *inner_eth_hdr(const struct sk_buff *skb)
|
|
{
|
|
return (struct ethhdr *)skb_inner_mac_header(skb);
|
|
}
|
|
|
|
int eth_header_parse(const struct sk_buff *skb, unsigned char *haddr);
|
|
|
|
extern ssize_t sysfs_format_mac(char *buf, const unsigned char *addr, int len);
|
|
|
|
#endif /* _LINUX_IF_ETHER_H */
|