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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 | #include <uapi/linux/errqueue.h>
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| 19 |
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| 20 | static inline struct icmphdr *icmp_hdr(const struct sk_buff *skb)
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| 21 | {
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| 22 | return (struct icmphdr *)skb_transport_header(skb);
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| 23 | }
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| 24 |
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| 25 | static inline bool icmp_is_err(int type)
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| 26 | {
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| 27 | switch (type) {
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| 28 | case ICMP_DEST_UNREACH:
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| 29 | case ICMP_SOURCE_QUENCH:
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| 30 | case ICMP_REDIRECT:
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| 31 | case ICMP_TIME_EXCEEDED:
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| 32 | case ICMP_PARAMETERPROB:
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| 33 | return true;
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| 34 | }
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| 35 |
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| 36 | return false;
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| 37 | }
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| 38 |
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| 39 | void ip_icmp_error_rfc4884(const struct sk_buff *skb,
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| 40 | struct sock_ee_data_rfc4884 *out,
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| 41 | int thlen, int off);
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| 42 |
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| 43 |
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| 44 | #define ICMP_EXT_ORIG_DGRAM_MIN_LEN 128
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| 45 | #define ICMP_EXT_VERSION_2 2
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| 46 |
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| 47 |
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| 48 | #define ICMP_EXT_OBJ_CLASS_IIO 2
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| 49 |
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| 50 |
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| 51 | enum {
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| 52 | ICMP_EXT_CTYPE_IIO_ROLE_IIF,
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| 53 | };
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| 54 |
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| 55 | #define ICMP_EXT_CTYPE_IIO_ROLE(ROLE) ((ROLE) << 6)
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| 56 | #define ICMP_EXT_CTYPE_IIO_MTU BIT(0)
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| 57 | #define ICMP_EXT_CTYPE_IIO_NAME BIT(1)
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| 58 | #define ICMP_EXT_CTYPE_IIO_IPADDR BIT(2)
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| 59 | #define ICMP_EXT_CTYPE_IIO_IFINDEX BIT(3)
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| 60 |
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| 61 | struct icmp_ext_iio_name_subobj {
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| 62 | u8 len;
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| 63 | char name[IFNAMSIZ];
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| 64 | };
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| 65 |
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| 66 | enum {
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| 67 |
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| 68 | ICMP_ERR_EXT_IIO_IIF,
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| 69 | |
| 70 | * sysctl.
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| 71 |
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| 72 | ICMP_ERR_EXT_COUNT,
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| 73 | };
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| 74 |
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| 75 | #endif
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