diff options
Diffstat (limited to 'net/ipv6/ah6.c')
| -rw-r--r-- | net/ipv6/ah6.c | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/net/ipv6/ah6.c b/net/ipv6/ah6.c index 4eaf55072b1..fb0d07a15e9 100644 --- a/net/ipv6/ah6.c +++ b/net/ipv6/ah6.c @@ -370,6 +370,7 @@ static int ah6_input(struct xfrm_state *x, struct sk_buff *skb) ip6h->flow_lbl[2] = 0; ip6h->hop_limit = 0; + spin_lock(&x->lock); { u8 auth_data[MAX_AH_AUTH_LEN]; @@ -378,14 +379,15 @@ static int ah6_input(struct xfrm_state *x, struct sk_buff *skb) skb_push(skb, hdr_len); err = ah_mac_digest(ahp, skb, ah->auth_data); if (err) - goto free_out; - err = -EINVAL; - if (memcmp(ahp->work_icv, auth_data, ahp->icv_trunc_len)) { - LIMIT_NETDEBUG(KERN_WARNING "ipsec ah authentication error\n"); - x->stats.integrity_failed++; - goto free_out; - } + goto unlock; + if (memcmp(ahp->work_icv, auth_data, ahp->icv_trunc_len)) + err = -EBADMSG; } +unlock: + spin_unlock(&x->lock); + + if (err) + goto free_out; skb->network_header += ah_hlen; memcpy(skb_network_header(skb), tmp_hdr, hdr_len); |