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 /src/exthdr.c | |
| 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 'src/exthdr.c')
| -rw-r--r-- | src/exthdr.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/src/exthdr.c b/src/exthdr.c index 3757f335..cbe0da86 100644 --- a/src/exthdr.c +++ b/src/exthdr.c @@ -101,6 +101,9 @@ struct expr *exthdr_expr_alloc(const struct location *loc, case 2: expr->exthdr.op = NFT_EXTHDR_OP_RT2; break; + case 4: + expr->exthdr.op = NFT_EXTHDR_OP_RT4; + break; } } return expr; @@ -165,6 +168,8 @@ void exthdr_init_raw(struct expr *expr, uint8_t type, expr->exthdr.desc = &exthdr_rt0; else if (op == NFT_EXTHDR_OP_RT2) expr->exthdr.desc = &exthdr_rt2; + else if (op == NFT_EXTHDR_OP_RT4) + expr->exthdr.desc = &exthdr_rt4; else if (type < array_size(exthdr_protocols)) expr->exthdr.desc = exthdr_protocols[type]; @@ -274,6 +279,24 @@ const struct exthdr_desc exthdr_rt0 = { }, }; +#define RT4_FIELD(__name, __member, __dtype) \ + HDR_TEMPLATE(__name, __dtype, struct ip6_rt4, __member) + +const struct exthdr_desc exthdr_rt4 = { + .name = "srh", + .type = IPPROTO_ROUTING, + .proto_key = 4, + .templates = { + [RT4HDR_LASTENT] = RT4_FIELD("last-entry", ip6r4_last_entry, &integer_type), + [RT4HDR_FLAGS] = RT4_FIELD("flags", ip6r4_flags, &integer_type), + [RT4HDR_TAG] = RT4_FIELD("tag", ip6r4_tag, &integer_type), + [RT4HDR_SID_1] = RT4_FIELD("sid[1]", ip6r4_segments[0], &ip6addr_type), + [RT4HDR_SID_1 + 1] = RT4_FIELD("sid[1]", ip6r4_segments[0], &ip6addr_type), + // ... + }, +}; + + #define RT_FIELD(__name, __member, __dtype) \ HDR_TEMPLATE(__name, __dtype, struct ip6_rthdr, __member) |