diff options
| author |   Pablo Camarillo <pcamaril@cisco.com> | 2016-12-07 18:34:18 +0100 |
|---|---|---|
| committer |   Dave Barach <openvpp@barachs.net> | 2017-03-04 00:55:42 +0000 |
| commit | fb38095d1c9d1b84850f345f0344f82b9ae2c375 (patch) | |
| tree | 374b98350db7c182c9493a219266f1229c52f1ae /src/vnet/ip | |
| parent | fa5231d75e1530a03a0c4f14706ec58067fa32d0 (diff) | |
Evolving SRv6 (Segment Routing for IPv6)
Implements:
1.- SR Policies with several (weighted) SID lists
2.- Binding SID
3.- SR LocalSIDs with support for the following functions
- End
- End.X
- End.DX6
- End.DX4
- End.DX2
- End.DT6
- End.DT2
- End.B6
- End.B6.Encaps
4.- SR Steering policies (to steer a traffic through an SR Policy)
- Support for IPv6 traffic (IPv6 Encapsulation / SRH insertion)
- Support for IPv4 traffic (IPv6 Encapsulation)
- Support for L2 traffic
(T.Insert / T.Encaps)
5.- Doxygen documentation
6.- Framework (APIs) to allow the definition of new SR LocalSID behaviors by means of plugins
7.- Sample SRv6 LocalSID plugin
Change-Id: I2de3d126699d4f11f54c0f7f3b71420ea41fd389
Signed-off-by: Pablo Camarillo <pcamaril@cisco.com>
Diffstat (limited to 'src/vnet/ip')
| -rw-r--r-- | src/vnet/ip/ip6_packet.h | 33 |
1 files changed, 30 insertions, 3 deletions
diff --git a/src/vnet/ip/ip6_packet.h b/src/vnet/ip/ip6_packet.h index 4fd14b96..6eabeef1 100644 --- a/src/vnet/ip/ip6_packet.h +++ b/src/vnet/ip/ip6_packet.h @@ -448,20 +448,47 @@ always_inline u8 ip6_ext_hdr(u8 nexthdr) * find out if nexthdr is an extension header or a protocol */ return (nexthdr == IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS) || - (nexthdr == IP_PROTOCOL_IP6_NONXT) || (nexthdr == IP_PROTOCOL_IPV6_FRAGMENTATION) || (nexthdr == IP_PROTOCOL_IPSEC_AH) || (nexthdr == IP_PROTOCOL_IPV6_ROUTE) || (nexthdr == IP_PROTOCOL_IP6_DESTINATION_OPTIONS); } -#define ip6_ext_header_len(p) (((p)->n_data_u64s+1) << 3) -#define ip6_ext_authhdr_len(p) (((p)->n_data_u64s+2) << 2) +#define ip6_ext_header_len(p) ((((ip6_ext_header_t *)(p))->n_data_u64s+1) << 3) +#define ip6_ext_authhdr_len(p) ((((ip6_ext_header_t *)(p))->n_data_u64s+2) << 2) always_inline void * ip6_ext_next_header (ip6_ext_header_t *ext_hdr ) { return (void *)((u8 *) ext_hdr + ip6_ext_header_len(ext_hdr)); } +/* + * Macro to find the IPv6 ext header of type t + * I is the IPv6 header + * P is the previous IPv6 ext header (NULL if none) + * M is the matched IPv6 ext header of type t + */ +#define ip6_ext_header_find_t(i, p, m, t) \ +if ((i)->protocol == t) \ +{ \ + (m) = (void *)((i)+1); \ + (p) = NULL; \ +} \ +else \ +{ \ + (m) = NULL; \ + (p) = (void *)((i)+1); \ + while (ip6_ext_hdr((p)->next_hdr) && \ + ((ip6_ext_header_t *)(p))->next_hdr != (t)) \ + { \ + (p) = ip6_ext_next_header((p)); \ + } \ + if ( ip6_ext_hdr((p)->next_hdr) == (t)) \ + { \ + (m) = (void *)(ip6_ext_next_header((p))); \ + } \ +} + + typedef CLIB_PACKED (struct { u8 next_hdr; /* Length of this header plus option data in 8 byte units. */ |