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| author | David Lebrun <david.lebrun@uclouvain.be> | 2016-11-08 16:57:41 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-11-10 04:40:06 +0300 |
| commit | 6c8702c60b88651072460f3f4026c7dfe2521d12 (patch) | |
| tree | 2ff901e3824bb605585e76c43739aa9b4b90ec39 /net/core | |
| parent | 915d7e5e5930b4f01d0971d93b9b25ed17d221aa (diff) | |
| download | linux-6c8702c60b88651072460f3f4026c7dfe2521d12.tar.xz | |
ipv6: sr: add support for SRH encapsulation and injection with lwtunnels
This patch creates a new type of interfaceless lightweight tunnel (SEG6),
enabling the encapsulation and injection of SRH within locally emitted
packets and forwarded packets.
>From a configuration viewpoint, a seg6 tunnel would be configured as follows:
ip -6 ro ad fc00::1/128 encap seg6 mode encap segs fc42::1,fc42::2,fc42::3 dev eth0
Any packet whose destination address is fc00::1 would thus be encapsulated
within an outer IPv6 header containing the SRH with three segments, and would
actually be routed to the first segment of the list. If `mode inline' was
specified instead of `mode encap', then the SRH would be directly inserted
after the IPv6 header without outer encapsulation.
The inline mode is only available if CONFIG_IPV6_SEG6_INLINE is enabled. This
feature was made configurable because direct header insertion may break
several mechanisms such as PMTUD or IPSec AH.
Signed-off-by: David Lebrun <david.lebrun@uclouvain.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core')
| -rw-r--r-- | net/core/lwtunnel.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/net/core/lwtunnel.c b/net/core/lwtunnel.c index 88fd64250b02..03976e939818 100644 --- a/net/core/lwtunnel.c +++ b/net/core/lwtunnel.c @@ -39,6 +39,8 @@ static const char *lwtunnel_encap_str(enum lwtunnel_encap_types encap_type) return "MPLS"; case LWTUNNEL_ENCAP_ILA: return "ILA"; + case LWTUNNEL_ENCAP_SEG6: + return "SEG6"; case LWTUNNEL_ENCAP_IP6: case LWTUNNEL_ENCAP_IP: case LWTUNNEL_ENCAP_NONE: |