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authorHerbert Xu <herbert@gondor.apana.org.au>2007-10-09 13:33:35 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2007-10-10 16:55:03 -0700
commitb7c6538cd84f8072fad43bfce530f5bf695edbba (patch)
treee0ba79ffe7b79355985a45de9961b17a0462764f /net/ipv4/ah4.c
parent050f009e16f908932070313c1745d09dc69fd62b (diff)
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[IPSEC]: Move state lock into x->type->output
This patch releases the lock on the state before calling x->type->output. It also adds the lock to the spots where they're currently needed. Most of those places (all except mip6) are expected to disappear with async crypto. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
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 58af298e194..3513149c384 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;