projects / GitHub / mt8127 / android_kernel_alcatel_ttab.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | /* |
| 2 | * INET An implementation of the TCP/IP protocol suite for the LINUX | |
| 3 | * operating system. INET is implemented using the BSD Socket | |
| 4 | * interface as the means of communication with the user level. | |
| 5 | * | |
| 6 | * Global definitions for the ARP (RFC 826) protocol. | |
| 7 | * | |
| 8 | * Version: @(#)if_arp.h 1.0.1 04/16/93 | |
| 9 | * | |
| 10 | * Authors: Original taken from Berkeley UNIX 4.3, (c) UCB 1986-1988 | |
| 11 | * Portions taken from the KA9Q/NOS (v2.00m PA0GRI) source. | |
| 02c30a84 | 12 | * Ross Biro |
| 1da177e4 LT |
13 | * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> |
| 14 | * Florian La Roche, | |
| 15 | * Jonathan Layes <layes@loran.com> | |
| 16 | * Arnaldo Carvalho de Melo <acme@conectiva.com.br> ARPHRD_HWX25 | |
| 17 | * | |
| 18 | * This program is free software; you can redistribute it and/or | |
| 19 | * modify it under the terms of the GNU General Public License | |
| 20 | * as published by the Free Software Foundation; either version | |
| 21 | * 2 of the License, or (at your option) any later version. | |
| 22 | */ | |
| 23 | #ifndef _LINUX_IF_ARP_H | |
| 24 | #define _LINUX_IF_ARP_H | |
| 25 | ||
| d0a92be0 | 26 | #include <linux/skbuff.h> |
| 607ca46e | 27 | #include <uapi/linux/if_arp.h> |
| d0a92be0 ACM |
28 | |
| 29 | static inline struct arphdr *arp_hdr(const struct sk_buff *skb) | |
| 30 | { | |
| 31 | return (struct arphdr *)skb_network_header(skb); | |
| 32 | } | |
| 988b7050 PE |
33 | |
| 34 | static inline int arp_hdr_len(struct net_device *dev) | |
| 35 | { | |
| 6752c8db YH |
36 | switch (dev->type) { |
| 37 | #if IS_ENABLED(CONFIG_FIREWIRE_NET) | |
| 38 | case ARPHRD_IEEE1394: | |
| 39 | /* ARP header, device address and 2 IP addresses */ | |
| 40 | return sizeof(struct arphdr) + dev->addr_len + sizeof(u32) * 2; | |
| 41 | #endif | |
| 42 | default: | |
| 43 | /* ARP header, plus 2 device addresses, plus 2 IP addresses. */ | |
| 44 | return sizeof(struct arphdr) + (dev->addr_len + sizeof(u32)) * 2; | |
| 45 | } | |
| 988b7050 | 46 | } |
| 1da177e4 | 47 | #endif /* _LINUX_IF_ARP_H */ |