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Diffstat (limited to 'net/ipv4/ah4.c')
-rw-r--r--net/ipv4/ah4.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/net/ipv4/ah4.c b/net/ipv4/ah4.c
index 58af298e1941..3513149c3843 100644
--- a/net/ipv4/ah4.c
+++ b/net/ipv4/ah4.c
@@ -5,6 +5,7 @@
#include <net/ah.h>
#include <linux/crypto.h>
#include <linux/pfkeyv2.h>
+#include <linux/spinlock.h>
#include <net/icmp.h>
#include <net/protocol.h>
#include <asm/scatterlist.h>
@@ -97,10 +98,14 @@ static int ah_output(struct xfrm_state *x, struct sk_buff *skb)
ah->reserved = 0;
ah->spi = x->id.spi;
ah->seq_no = htonl(XFRM_SKB_CB(skb)->seq);
+
+ spin_lock_bh(&x->lock);
err = ah_mac_digest(ahp, skb, ah->auth_data);
+ memcpy(ah->auth_data, ahp->work_icv, ahp->icv_trunc_len);
+ spin_unlock_bh(&x->lock);
+
if (err)
goto error;
- memcpy(ah->auth_data, ahp->work_icv, ahp->icv_trunc_len);
top_iph->tos = iph->tos;
top_iph->ttl = iph->ttl;