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| author | Herbert Xu <herbert@gondor.apana.org.au> | 2007-11-13 21:45:58 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-01-28 14:53:52 -0800 |
| commit | 0ebea8ef3559b545c37b016f44e84c3b33e47c39 (patch) | |
| tree | 7a47787c1b830084ac2d36371490b9e2574e2472 /net/ipv4/ah4.c | |
| parent | 668dc8af3150f837f7f0461001bbbc0ce25d7bdf (diff) | |
| download | lwn-0ebea8ef3559b545c37b016f44e84c3b33e47c39.tar.gz lwn-0ebea8ef3559b545c37b016f44e84c3b33e47c39.zip | |
[IPSEC]: Move state lock into x->type->input
This patch releases the lock on the state before calling
x->type->input. 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.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/net/ipv4/ah4.c b/net/ipv4/ah4.c index a989d29b44ea..d76803a3dcae 100644 --- a/net/ipv4/ah4.c +++ b/net/ipv4/ah4.c @@ -169,6 +169,8 @@ static int ah_input(struct xfrm_state *x, struct sk_buff *skb) if (ip_clear_mutable_options(iph, &dummy)) goto out; } + + spin_lock(&x->lock); { u8 auth_data[MAX_AH_AUTH_LEN]; @@ -176,12 +178,16 @@ static int ah_input(struct xfrm_state *x, struct sk_buff *skb) skb_push(skb, ihl); err = ah_mac_digest(ahp, skb, ah->auth_data); if (err) - goto out; - if (memcmp(ahp->work_icv, auth_data, ahp->icv_trunc_len)) { + goto unlock; + if (memcmp(ahp->work_icv, auth_data, ahp->icv_trunc_len)) err = -EBADMSG; - goto out; - } } +unlock: + spin_unlock(&x->lock); + + if (err) + goto out; + skb->network_header += ah_hlen; memcpy(skb_network_header(skb), work_buf, ihl); skb->transport_header = skb->network_header; |