diff options
| author | Ahmed Abdelsalam <amsalam20@gmail.com> | 2018-02-27 11:04:14 +0100 |
|---|---|---|
| committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2018-03-11 22:59:46 +0100 |
| commit | a7e02fe7984a721ae1240c415ec7d1e73ccc5dbd (patch) | |
| tree | 29aabe95725a2f29543044bdaf81efe5da6f05f1 /include | |
| parent | 1400288f6d39d9839748c44216171e84c6d47d66 (diff) | |
src: Adding support for segment routing header 'srh'
Segment Routing Header "SRH" is new type of IPv6 Routing extension
header (type 4).
SRH contains a list of segments (each is represented as an IPv6 address)
to be visited by packets during the journey from source to destination.
The SRH specification are defined in the below IETF SRH draft.
https://tools.ietf.org/html/draft-ietf-6man-segment-routing-header-07
Signed-off-by: Ahmed Abdelsalam <amsalam20@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/exthdr.h | 9 | ||||
| -rw-r--r-- | include/headers.h | 12 |
2 files changed, 21 insertions, 0 deletions
diff --git a/include/exthdr.h b/include/exthdr.h index 06bf6285..32f99c9c 100644 --- a/include/exthdr.h +++ b/include/exthdr.h @@ -57,6 +57,14 @@ enum rt2_hdr_fields { RT2HDR_ADDR, }; +enum rt4_hdr_fields { + RT4HDR_INVALID, + RT4HDR_LASTENT, + RT4HDR_FLAGS, + RT4HDR_TAG, + RT4HDR_SID_1, +}; + enum frag_hdr_fields { FRAGHDR_INVALID, FRAGHDR_NEXTHDR, @@ -87,6 +95,7 @@ extern const struct exthdr_desc exthdr_hbh; extern const struct exthdr_desc exthdr_rt; extern const struct exthdr_desc exthdr_rt0; extern const struct exthdr_desc exthdr_rt2; +extern const struct exthdr_desc exthdr_rt4; extern const struct exthdr_desc exthdr_frag; extern const struct exthdr_desc exthdr_dst; extern const struct exthdr_desc exthdr_mh; diff --git a/include/headers.h b/include/headers.h index 469d6740..3d564deb 100644 --- a/include/headers.h +++ b/include/headers.h @@ -112,6 +112,18 @@ struct ip6_mh { uint8_t data[0]; }; +/* Type 4 Routing header - well known as srh */ +struct ip6_rt4 { + uint8_t ip6r4_nxt; /* next header */ + uint8_t ip6r4_len; /* length in units of 8 octets */ + uint8_t ip6r4_type; /* always zero */ + uint8_t ip6r4_segleft; /* segments left */ + uint8_t ip6r4_last_entry; /* last entry */ + uint8_t ip6r4_flags; /* flags */ + uint16_t ip6r4_tag; /* tag */ + struct in6_addr ip6r4_segments[0]; /* SID list */ +}; + /* RFC 3775 */ #define IP6_MH_TYPE_BRR 0 /* Binding Refresh Request */ #define IP6_MH_TYPE_HOTI 1 /* HOTI Message */ |