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authorSteffen Klassert <steffen.klassert@secunet.com>2014-02-21 11:41:10 +0400
committerSteffen Klassert <steffen.klassert@secunet.com>2014-02-25 10:04:18 +0400
commit9994bb8e1e05833e627d54147acb64952efcb713 (patch)
tree181126b2c9316385ce1cb1e3c268a2e480a89de7
parentdf3893c176e9b0bb39b28ab5ec8113fa20ad1ee0 (diff)
downloadlinux-9994bb8e1e05833e627d54147acb64952efcb713.tar.xz
xfrm4: Remove xfrm_tunnel_notifier
This was used from vti and is replaced by the IPsec protocol multiplexer hooks. It is now unused, so remove it. Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
-rw-r--r--include/net/xfrm.h2
-rw-r--r--net/ipv4/xfrm4_mode_tunnel.c68
2 files changed, 0 insertions, 70 deletions
diff --git a/include/net/xfrm.h b/include/net/xfrm.h
index 33112599fa47..8b925288a8bc 100644
--- a/include/net/xfrm.h
+++ b/include/net/xfrm.h
@@ -1531,8 +1531,6 @@ int xfrm4_protocol_deregister(struct xfrm4_protocol *handler, unsigned char prot
int xfrm4_tunnel_register(struct xfrm_tunnel *handler, unsigned short family);
int xfrm4_tunnel_deregister(struct xfrm_tunnel *handler, unsigned short family);
void xfrm4_local_error(struct sk_buff *skb, u32 mtu);
-int xfrm4_mode_tunnel_input_register(struct xfrm_tunnel_notifier *handler);
-int xfrm4_mode_tunnel_input_deregister(struct xfrm_tunnel_notifier *handler);
int xfrm6_mode_tunnel_input_register(struct xfrm_tunnel_notifier *handler);
int xfrm6_mode_tunnel_input_deregister(struct xfrm_tunnel_notifier *handler);
int xfrm6_extract_header(struct sk_buff *skb);
diff --git a/net/ipv4/xfrm4_mode_tunnel.c b/net/ipv4/xfrm4_mode_tunnel.c
index 31b18152528f..05f2b484954f 100644
--- a/net/ipv4/xfrm4_mode_tunnel.c
+++ b/net/ipv4/xfrm4_mode_tunnel.c
@@ -15,65 +15,6 @@
#include <net/ip.h>
#include <net/xfrm.h>
-/* Informational hook. The decap is still done here. */
-static struct xfrm_tunnel_notifier __rcu *rcv_notify_handlers __read_mostly;
-static DEFINE_MUTEX(xfrm4_mode_tunnel_input_mutex);
-
-int xfrm4_mode_tunnel_input_register(struct xfrm_tunnel_notifier *handler)
-{
- struct xfrm_tunnel_notifier __rcu **pprev;
- struct xfrm_tunnel_notifier *t;
- int ret = -EEXIST;
- int priority = handler->priority;
-
- mutex_lock(&xfrm4_mode_tunnel_input_mutex);
-
- for (pprev = &rcv_notify_handlers;
- (t = rcu_dereference_protected(*pprev,
- lockdep_is_held(&xfrm4_mode_tunnel_input_mutex))) != NULL;
- pprev = &t->next) {
- if (t->priority > priority)
- break;
- if (t->priority == priority)
- goto err;
-
- }
-
- handler->next = *pprev;
- rcu_assign_pointer(*pprev, handler);
-
- ret = 0;
-
-err:
- mutex_unlock(&xfrm4_mode_tunnel_input_mutex);
- return ret;
-}
-EXPORT_SYMBOL_GPL(xfrm4_mode_tunnel_input_register);
-
-int xfrm4_mode_tunnel_input_deregister(struct xfrm_tunnel_notifier *handler)
-{
- struct xfrm_tunnel_notifier __rcu **pprev;
- struct xfrm_tunnel_notifier *t;
- int ret = -ENOENT;
-
- mutex_lock(&xfrm4_mode_tunnel_input_mutex);
- for (pprev = &rcv_notify_handlers;
- (t = rcu_dereference_protected(*pprev,
- lockdep_is_held(&xfrm4_mode_tunnel_input_mutex))) != NULL;
- pprev = &t->next) {
- if (t == handler) {
- *pprev = handler->next;
- ret = 0;
- break;
- }
- }
- mutex_unlock(&xfrm4_mode_tunnel_input_mutex);
- synchronize_net();
-
- return ret;
-}
-EXPORT_SYMBOL_GPL(xfrm4_mode_tunnel_input_deregister);
-
static inline void ipip_ecn_decapsulate(struct sk_buff *skb)
{
struct iphdr *inner_iph = ipip_hdr(skb);
@@ -127,14 +68,8 @@ static int xfrm4_mode_tunnel_output(struct xfrm_state *x, struct sk_buff *skb)
return 0;
}
-#define for_each_input_rcu(head, handler) \
- for (handler = rcu_dereference(head); \
- handler != NULL; \
- handler = rcu_dereference(handler->next))
-
static int xfrm4_mode_tunnel_input(struct xfrm_state *x, struct sk_buff *skb)
{
- struct xfrm_tunnel_notifier *handler;
int err = -EINVAL;
if (XFRM_MODE_SKB_CB(skb)->protocol != IPPROTO_IPIP)
@@ -143,9 +78,6 @@ static int xfrm4_mode_tunnel_input(struct xfrm_state *x, struct sk_buff *skb)
if (!pskb_may_pull(skb, sizeof(struct iphdr)))
goto out;
- for_each_input_rcu(rcv_notify_handlers, handler)
- handler->handler(skb);
-
err = skb_unclone(skb, GFP_ATOMIC);
if (err)
goto out;