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| 2 | |
| 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 | * Definitions for the ICMP protocol.
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| 8 | *
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| 9 | * Version: @(#)icmp.h 1.0.3 04/28/93
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| 10 | *
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| 11 | * Author: Fred N. van Kempen, <[email protected]>
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| 12 |
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| 13 | #ifndef _LINUX_ICMP_H
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| 14 | #define _LINUX_ICMP_H
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| 15 |
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| 16 | #include <linux/skbuff.h>
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| 17 | #include <uapi/linux/icmp.h>
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| 18 |
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| 19 | static inline struct icmphdr *icmp_hdr(const struct sk_buff *skb)
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| 20 | {
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| 21 | return (struct icmphdr *)skb_transport_header(skb);
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| 22 | }
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| 23 |
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| 24 | static inline bool icmp_is_err(int type)
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| 25 | {
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| 26 | switch (type) {
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| 27 | case ICMP_DEST_UNREACH:
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| 28 | case ICMP_SOURCE_QUENCH:
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| 29 | case ICMP_REDIRECT:
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| 30 | case ICMP_TIME_EXCEEDED:
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| 31 | case ICMP_PARAMETERPROB:
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| 32 | return true;
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| 33 | }
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| 34 |
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| 35 | return false;
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| 36 | }
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| 37 |
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| 38 | #endif
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