esp6: Use the IPsec protocol multiplexer API

Switch esp6 to use the new IPsec protocol multiplexer.

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

diff --git a/net/ipv6/esp6.c b/net/ipv6/esp6.c
index 6eef8a7..d15da13 100644 (file)
--- a/net/ipv6/esp6.c
+++ b/net/ipv6/esp6.c
@@ -421,8 +421,8 @@ static u32 esp6_get_mtu(struct xfrm_state *x, int mtu)
                 net_adj) & ~(blksize - 1)) + net_adj - 2;
 }
 
-static void esp6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
-                    u8 type, u8 code, int offset, __be32 info)
+static int esp6_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);
        const struct ipv6hdr *iph = (const struct ipv6hdr *)skb->data;
@@ -431,18 +431,20 @@ static void esp6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
 
        if (type != ICMPV6_PKT_TOOBIG &&
            type != NDISC_REDIRECT)
-               return;
+               return 0;
 
        x = xfrm_state_lookup(net, skb->mark, (const xfrm_address_t *)&iph->daddr,
                              esph->spi, IPPROTO_ESP, 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 void esp6_destroy(struct xfrm_state *x)
@@ -614,6 +616,11 @@ error:
        return err;
 }
 
+static int esp6_rcv_cb(struct sk_buff *skb, int err)
+{
+       return 0;
+}
+
 static const struct xfrm_type esp6_type =
 {
        .description    = "ESP6",
@@ -628,10 +635,11 @@ static const struct xfrm_type esp6_type =
        .hdr_offset     = xfrm6_find_1stfragopt,
 };
 
-static const struct inet6_protocol esp6_protocol = {
-       .handler        =       xfrm6_rcv,
+static struct xfrm6_protocol esp6_protocol = {
+       .handler        =       xfrm6_rcv,
+       .cb_handler     =       esp6_rcv_cb,
        .err_handler    =       esp6_err,
-       .flags          =       INET6_PROTO_NOPOLICY,
+       .priority       =       0,
 };
 
 static int __init esp6_init(void)
@@ -640,7 +648,7 @@ static int __init esp6_init(void)
                pr_info("%s: can't add xfrm type\n", __func__);
                return -EAGAIN;
        }
-       if (inet6_add_protocol(&esp6_protocol, IPPROTO_ESP) < 0) {
+       if (xfrm6_protocol_register(&esp6_protocol, IPPROTO_ESP) < 0) {
                pr_info("%s: can't add protocol\n", __func__);
                xfrm_unregister_type(&esp6_type, AF_INET6);
                return -EAGAIN;
@@ -651,7 +659,7 @@ static int __init esp6_init(void)
 
 static void __exit esp6_fini(void)
 {
-       if (inet6_del_protocol(&esp6_protocol, IPPROTO_ESP) < 0)
+       if (xfrm6_protocol_deregister(&esp6_protocol, IPPROTO_ESP) < 0)
                pr_info("%s: can't remove protocol\n", __func__);
        if (xfrm_unregister_type(&esp6_type, AF_INET6) < 0)
                pr_info("%s: can't remove xfrm type\n", __func__);