1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * INET An implementation of the TCP/IP protocol suite for the LINUX 4 * operating system. INET is implemented using the BSD Socket 5 * interface as the means of communication with the user level. 6 * 7 * Global definitions for the Ethernet IEEE 802.3 interface. 8 * 9 * Version: @(#)if_ether.h 1.0.1a 02/08/94 10 * 11 * Author: Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> 12 * Donald Becker, <becker@super.org> 13 * Alan Cox, <alan@lxorguk.ukuu.org.uk> 14 * Steve Whitehouse, <gw7rrm@eeshack3.swan.ac.uk> 15 */ 16 #ifndef _LINUX_IF_ETHER_H 17 #define _LINUX_IF_ETHER_H 18 19 #include <linux/skbuff.h> 20 #include <uapi/linux/if_ether.h> 21 22 /* XX:XX:XX:XX:XX:XX */ 23 #define MAC_ADDR_STR_LEN (3 * ETH_ALEN - 1) 24 eth_hdr(const struct sk_buff * skb)25static inline struct ethhdr *eth_hdr(const struct sk_buff *skb) 26 { 27 return (struct ethhdr *)skb_mac_header(skb); 28 } 29 30 /* Prefer this version in TX path, instead of 31 * skb_reset_mac_header() + eth_hdr() 32 */ skb_eth_hdr(const struct sk_buff * skb)33static inline struct ethhdr *skb_eth_hdr(const struct sk_buff *skb) 34 { 35 return (struct ethhdr *)skb->data; 36 } 37 inner_eth_hdr(const struct sk_buff * skb)38static inline struct ethhdr *inner_eth_hdr(const struct sk_buff *skb) 39 { 40 return (struct ethhdr *)skb_inner_mac_header(skb); 41 } 42 43 int eth_header_parse(const struct sk_buff *skb, unsigned char *haddr); 44 45 extern ssize_t sysfs_format_mac(char *buf, const unsigned char *addr, int len); 46 47 #endif /* _LINUX_IF_ETHER_H */ 48