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| author |   Xin Long <lucien.xin@gmail.com> | 2020-07-06 20:01:37 +0800 |
|---|---|---|
| committer |   Steffen Klassert <steffen.klassert@secunet.com> | 2020-07-09 12:56:01 +0200 |
| commit | d7b360c2869f9ce2418510d14baf0f9696fcf1e9 (patch) | |
| tree | aca752742692b6938bb484c2ac9713b5a86487a6 /net/xfrm | |
| parent | ipcomp: assign if_id to child tunnel from parent tunnel (diff) | |
| download | linux-dev-d7b360c2869f9ce2418510d14baf0f9696fcf1e9.tar.xz linux-dev-d7b360c2869f9ce2418510d14baf0f9696fcf1e9.zip | |
xfrm: interface: support IP6IP6 and IP6IP tunnels processing with .cb_handler
Similar to ip6_vti, IP6IP6 and IP6IP tunnels processing can easily
be done with .cb_handler for xfrm interface.
v1->v2:
- no change.
v2-v3:
- enable it only when CONFIG_INET6_XFRM_TUNNEL is defined, to fix
the build error, reported by kbuild test robot.
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Diffstat (limited to 'net/xfrm')
| -rw-r--r-- | net/xfrm/xfrm_interface.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/net/xfrm/xfrm_interface.c b/net/xfrm/xfrm_interface.c index c407ecbc5d46..b9ef496d3d7c 100644 --- a/net/xfrm/xfrm_interface.c +++ b/net/xfrm/xfrm_interface.c @@ -798,6 +798,26 @@ static struct xfrm6_protocol xfrmi_ipcomp6_protocol __read_mostly = { .priority = 10, }; +#if IS_ENABLED(CONFIG_INET6_XFRM_TUNNEL) +static int xfrmi6_rcv_tunnel(struct sk_buff *skb) +{ + const xfrm_address_t *saddr; + __be32 spi; + + saddr = (const xfrm_address_t *)&ipv6_hdr(skb)->saddr; + spi = xfrm6_tunnel_spi_lookup(dev_net(skb->dev), saddr); + + return xfrm6_rcv_spi(skb, IPPROTO_IPV6, spi, NULL); +} + +static struct xfrm6_tunnel xfrmi_ipv6_handler __read_mostly = { + .handler = xfrmi6_rcv_tunnel, + .cb_handler = xfrmi_rcv_cb, + .err_handler = xfrmi6_err, + .priority = -1, +}; +#endif + static struct xfrm4_protocol xfrmi_esp4_protocol __read_mostly = { .handler = xfrm4_rcv, .input_handler = xfrm_input, @@ -866,9 +886,23 @@ static int __init xfrmi6_init(void) err = xfrm6_protocol_register(&xfrmi_ipcomp6_protocol, IPPROTO_COMP); if (err < 0) goto xfrm_proto_comp_failed; +#if IS_ENABLED(CONFIG_INET6_XFRM_TUNNEL) + err = xfrm6_tunnel_register(&xfrmi_ipv6_handler, AF_INET6); + if (err < 0) + goto xfrm_tunnel_ipv6_failed; + err = xfrm6_tunnel_register(&xfrmi_ipv6_handler, AF_INET); + if (err < 0) + goto xfrm_tunnel_ip6ip_failed; +#endif return 0; +#if IS_ENABLED(CONFIG_INET6_XFRM_TUNNEL) +xfrm_tunnel_ip6ip_failed: + xfrm6_tunnel_deregister(&xfrmi_ipv6_handler, AF_INET6); +xfrm_tunnel_ipv6_failed: + xfrm6_protocol_deregister(&xfrmi_ipcomp6_protocol, IPPROTO_COMP); +#endif xfrm_proto_comp_failed: xfrm6_protocol_deregister(&xfrmi_ah6_protocol, IPPROTO_AH); xfrm_proto_ah_failed: @@ -879,6 +913,10 @@ xfrm_proto_esp_failed: static void xfrmi6_fini(void) { +#if IS_ENABLED(CONFIG_INET6_XFRM_TUNNEL) + xfrm6_tunnel_deregister(&xfrmi_ipv6_handler, AF_INET); + xfrm6_tunnel_deregister(&xfrmi_ipv6_handler, AF_INET6); +#endif xfrm6_protocol_deregister(&xfrmi_ipcomp6_protocol, IPPROTO_COMP); xfrm6_protocol_deregister(&xfrmi_ah6_protocol, IPPROTO_AH); xfrm6_protocol_deregister(&xfrmi_esp6_protocol, IPPROTO_ESP); |