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