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ah4: Use the IPsec protocol multiplexer API 

Switch ah4 to use the new IPsec protocol multiplexer.

Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
This commit is contained in:
Steffen Klassert 2014-02-21 08:41:09 +01:00
parent 827789cbd7
commit e5b56454e0
1 changed files with 16 additions and 9 deletions
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25
net/ipv4/ah4.c
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@ -428,7 +428,7 @@ out:
return err; return err;
} }
static void ah4_err(struct sk_buff *skb, u32 info) static int ah4_err(struct sk_buff *skb, u32 info)
{ {
struct net *net = dev_net(skb->dev); struct net *net = dev_net(skb->dev);
const struct iphdr *iph = (const struct iphdr *)skb->data; const struct iphdr *iph = (const struct iphdr *)skb->data;
@ -438,23 +438,25 @@ static void ah4_err(struct sk_buff *skb, u32 info)
switch (icmp_hdr(skb)->type) { switch (icmp_hdr(skb)->type) {
case ICMP_DEST_UNREACH: case ICMP_DEST_UNREACH:
if (icmp_hdr(skb)->code != ICMP_FRAG_NEEDED) if (icmp_hdr(skb)->code != ICMP_FRAG_NEEDED)
return; return 0;
case ICMP_REDIRECT: case ICMP_REDIRECT:
break; break;
default: default:
return; return 0;
} }
x = xfrm_state_lookup(net, skb->mark, (const xfrm_address_t *)&iph->daddr, x = xfrm_state_lookup(net, skb->mark, (const xfrm_address_t *)&iph->daddr,
ah->spi, IPPROTO_AH, AF_INET); ah->spi, IPPROTO_AH, AF_INET);
if (!x) if (!x)
return; return 0;
if (icmp_hdr(skb)->type == ICMP_DEST_UNREACH) if (icmp_hdr(skb)->type == ICMP_DEST_UNREACH)
ipv4_update_pmtu(skb, net, info, 0, 0, IPPROTO_AH, 0); ipv4_update_pmtu(skb, net, info, 0, 0, IPPROTO_AH, 0);
else else
ipv4_redirect(skb, net, 0, 0, IPPROTO_AH, 0); ipv4_redirect(skb, net, 0, 0, IPPROTO_AH, 0);
xfrm_state_put(x); xfrm_state_put(x);
return 0;
} }
static int ah_init_state(struct xfrm_state *x) static int ah_init_state(struct xfrm_state *x)
@ -536,6 +538,10 @@ static void ah_destroy(struct xfrm_state *x)
kfree(ahp); kfree(ahp);
} }
static int ah4_rcv_cb(struct sk_buff *skb, int err)
{
return 0;
}
static const struct xfrm_type ah_type = static const struct xfrm_type ah_type =
{ {
@ -549,11 +555,12 @@ static const struct xfrm_type ah_type =
.output = ah_output .output = ah_output
}; };
static const struct net_protocol ah4_protocol = { static struct xfrm4_protocol ah4_protocol = {
.handler = xfrm4_rcv, .handler = xfrm4_rcv,
.input_handler = xfrm_input,
.cb_handler = ah4_rcv_cb,
.err_handler = ah4_err, .err_handler = ah4_err,
.no_policy = 1, .priority = 0,
.netns_ok = 1,
}; };
static int __init ah4_init(void) static int __init ah4_init(void)
@ -562,7 +569,7 @@ static int __init ah4_init(void)
pr_info("%s: can't add xfrm type\n", __func__); pr_info("%s: can't add xfrm type\n", __func__);
return -EAGAIN; return -EAGAIN;
} }
if (inet_add_protocol(&ah4_protocol, IPPROTO_AH) < 0) { if (xfrm4_protocol_register(&ah4_protocol, IPPROTO_AH) < 0) {
pr_info("%s: can't add protocol\n", __func__); pr_info("%s: can't add protocol\n", __func__);
xfrm_unregister_type(&ah_type, AF_INET); xfrm_unregister_type(&ah_type, AF_INET);
return -EAGAIN; return -EAGAIN;
@ -572,7 +579,7 @@ static int __init ah4_init(void)
static void __exit ah4_fini(void) static void __exit ah4_fini(void)
{ {
if (inet_del_protocol(&ah4_protocol, IPPROTO_AH) < 0) if (xfrm4_protocol_deregister(&ah4_protocol, IPPROTO_AH) < 0)
pr_info("%s: can't remove protocol\n", __func__); pr_info("%s: can't remove protocol\n", __func__);
if (xfrm_unregister_type(&ah_type, AF_INET) < 0) if (xfrm_unregister_type(&ah_type, AF_INET) < 0)
pr_info("%s: can't remove xfrm type\n", __func__); pr_info("%s: can't remove xfrm type\n", __func__);