xfrm_user: don't copy esn replay window twice for new states

[ Upstream commit e3ac104d41a97b42316915020ba228c505447d21 ]

The ESN replay window was already fully initialized in
xfrm_alloc_replay_state_esn(). No need to copy it again.

Cc: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Mathias Krause <minipli@googlemail.com>
Acked-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c
index 8f916a7a4fad4372db05f769431587b2eaccd624..28e4f751c4dda38f7bb9f573f7b30208cc499800 100644 (file)
--- a/net/xfrm/xfrm_user.c
+++ b/net/xfrm/xfrm_user.c
@@ -442,10 +442,11 @@ static void copy_from_user_state(struct xfrm_state *x, struct xfrm_usersa_info *
  * somehow made shareable and move it to xfrm_state.c - JHS
  *
 */
-static void xfrm_update_ae_params(struct xfrm_state *x, struct nlattr **attrs)
+static void xfrm_update_ae_params(struct xfrm_state *x, struct nlattr **attrs,
+                                 int update_esn)
 {
        struct nlattr *rp = attrs[XFRMA_REPLAY_VAL];
-       struct nlattr *re = attrs[XFRMA_REPLAY_ESN_VAL];
+       struct nlattr *re = update_esn ? attrs[XFRMA_REPLAY_ESN_VAL] : NULL;
        struct nlattr *lt = attrs[XFRMA_LTIME_VAL];
        struct nlattr *et = attrs[XFRMA_ETIMER_THRESH];
        struct nlattr *rt = attrs[XFRMA_REPLAY_THRESH];
@@ -555,7 +556,7 @@ static struct xfrm_state *xfrm_state_construct(struct net *net,
                goto error;
 
        /* override default values from above */
-       xfrm_update_ae_params(x, attrs);
+       xfrm_update_ae_params(x, attrs, 0);
 
        return x;
 
@@ -1801,7 +1802,7 @@ static int xfrm_new_ae(struct sk_buff *skb, struct nlmsghdr *nlh,
                goto out;
 
        spin_lock_bh(&x->lock);
-       xfrm_update_ae_params(x, attrs);
+       xfrm_update_ae_params(x, attrs, 1);
        spin_unlock_bh(&x->lock);
 
        c.event = nlh->nlmsg_type;