ipcomp6: Use the IPsec protocol multiplexer API

Switch ipcomp6 to use the new IPsec protocol multiplexer.

Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>

diff --git a/net/ipv6/ipcomp6.c b/net/ipv6/ipcomp6.c
index da9becb..d1c793c 100644 (file)
--- a/net/ipv6/ipcomp6.c
+++ b/net/ipv6/ipcomp6.c
@@ -53,7 +53,7 @@
 #include <linux/icmpv6.h>
 #include <linux/mutex.h>
 
-static void ipcomp6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
+static int ipcomp6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
                                u8 type, u8 code, int offset, __be32 info)
 {
        struct net *net = dev_net(skb->dev);
@@ -65,19 +65,21 @@ static void ipcomp6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
 
        if (type != ICMPV6_PKT_TOOBIG &&
            type != NDISC_REDIRECT)
-               return;
+               return 0;
 
        spi = htonl(ntohs(ipcomph->cpi));
        x = xfrm_state_lookup(net, skb->mark, (const xfrm_address_t *)&iph->daddr,
                              spi, IPPROTO_COMP, AF_INET6);
        if (!x)
-               return;
+               return 0;
 
        if (type == NDISC_REDIRECT)
                ip6_redirect(skb, net, skb->dev->ifindex, 0);
        else
                ip6_update_pmtu(skb, net, info, 0, 0);
        xfrm_state_put(x);
+
+       return 0;
 }
 
 static struct xfrm_state *ipcomp6_tunnel_create(struct xfrm_state *x)
@@ -174,6 +176,11 @@ out:
        return err;
 }
 
+static int ipcomp6_rcv_cb(struct sk_buff *skb, int err)
+{
+       return 0;
+}
+
 static const struct xfrm_type ipcomp6_type =
 {
        .description    = "IPCOMP6",
@@ -186,11 +193,12 @@ static const struct xfrm_type ipcomp6_type =
        .hdr_offset     = xfrm6_find_1stfragopt,
 };
 
-static const struct inet6_protocol ipcomp6_protocol =
+static struct xfrm6_protocol ipcomp6_protocol =
 {
        .handler        = xfrm6_rcv,
+       .cb_handler     = ipcomp6_rcv_cb,
        .err_handler    = ipcomp6_err,
-       .flags          = INET6_PROTO_NOPOLICY,
+       .priority       = 0,
 };
 
 static int __init ipcomp6_init(void)
@@ -199,7 +207,7 @@ static int __init ipcomp6_init(void)
                pr_info("%s: can't add xfrm type\n", __func__);
                return -EAGAIN;
        }
-       if (inet6_add_protocol(&ipcomp6_protocol, IPPROTO_COMP) < 0) {
+       if (xfrm6_protocol_register(&ipcomp6_protocol, IPPROTO_COMP) < 0) {
                pr_info("%s: can't add protocol\n", __func__);
                xfrm_unregister_type(&ipcomp6_type, AF_INET6);
                return -EAGAIN;
@@ -209,7 +217,7 @@ static int __init ipcomp6_init(void)
 
 static void __exit ipcomp6_fini(void)
 {
-       if (inet6_del_protocol(&ipcomp6_protocol, IPPROTO_COMP) < 0)
+       if (xfrm6_protocol_deregister(&ipcomp6_protocol, IPPROTO_COMP) < 0)
                pr_info("%s: can't remove protocol\n", __func__);
        if (xfrm_unregister_type(&ipcomp6_type, AF_INET6) < 0)
                pr_info("%s: can't remove xfrm type\n", __func__);