diff options
| author |   claudio <claudio@openbsd.org> | 2010-07-08 20:20:11 +0000 |
|---|---|---|
| committer | claudio <claudio@openbsd.org> | 2010-07-08 20:20:11 +0000 |
| commit | a78ef40bf5225488f16f989d98f39d4ea6c81c1e (patch) | |
| tree | 6a8aa51bbf8159ae72618d74a4a5eb6f0a5ec907 /sys | |
| parent | use config_activate_children to activate children that might need it (diff) | |
| download | wireguard-openbsd-a78ef40bf5225488f16f989d98f39d4ea6c81c1e.tar.xz wireguard-openbsd-a78ef40bf5225488f16f989d98f39d4ea6c81c1e.zip | |
Add definitions for ICMP extended headers available for some ICMP messages
like time exceeded messages. This will allow to add additional information
to those messges like the incomming MPLS label.
OK deraadt@, dhill@
Diffstat (limited to 'sys')
| -rw-r--r-- | sys/netinet/ip_icmp.h | 28 |
1 files changed, 26 insertions, 2 deletions
diff --git a/sys/netinet/ip_icmp.h b/sys/netinet/ip_icmp.h index 6e89454fe33..59699d13806 100644 --- a/sys/netinet/ip_icmp.h +++ b/sys/netinet/ip_icmp.h @@ -1,4 +1,4 @@ -/* $OpenBSD: ip_icmp.h,v 1.22 2009/06/05 00:05:22 claudio Exp $ */ +/* $OpenBSD: ip_icmp.h,v 1.23 2010/07/08 20:20:11 claudio Exp $ */ /* $NetBSD: ip_icmp.h,v 1.10 1996/02/13 23:42:28 christos Exp $ */ /* @@ -63,7 +63,11 @@ struct icmp { u_int8_t icmp_code; /* type sub code */ u_int16_t icmp_cksum; /* ones complement cksum of struct */ union { - u_int8_t ih_pptr; /* ICMP_PARAMPROB */ + u_int8_t ih_pptr; /* ICMP_PARAMPROB */ + struct ih_exthdr { /* RFC4884 extended header */ + u_int8_t iex_pad; + u_int8_t iex_length; + } ih_exthdr; struct in_addr ih_gwaddr; /* ICMP_REDIRECT */ struct ih_idseq { n_short icd_id; @@ -84,6 +88,7 @@ struct icmp { } ih_rtradv; } icmp_hun; #define icmp_pptr icmp_hun.ih_pptr +#define icmp_length icmp_hun.ih_exthdr.iex_length #define icmp_gwaddr icmp_hun.ih_gwaddr #define icmp_id icmp_hun.ih_idseq.icd_id #define icmp_seq icmp_hun.ih_idseq.icd_seq @@ -114,6 +119,25 @@ struct icmp { #define icmp_data icmp_dun.id_data }; +struct icmp_ext_hdr { + u_int8_t ieh_version; /* only high nibble used */ + u_int8_t ieh_res; /* reserved, must be zero */ + u_int16_t ieh_cksum; /* ones complement cksum of ext hdr */ +}; + +#define ICMP_EXT_HDR_VERSION 0x20 +#define ICMP_EXT_HDR_VMASK 0xf0 +#define ICMP_EXT_OFFSET 128 + +struct icmp_ext_obj_hdr { + u_int16_t ieo_length; /* length of obj incl this header */ + u_int8_t ieo_cnum; /* class number */ + u_int8_t ieo_ctype; /* sub class type */ +}; + +#define ICMP_EXT_MPLS 1 +#define ICMP_EXT_IFINFO 2 + /* * For IPv6 transition related ICMP errors. */ |