path: root/net/ipv6/ipcomp6.c
diff options
authorHerbert Xu <herbert@gondor.apana.org.au>2008-02-28 11:23:17 -0800
committerDavid S. Miller <davem@davemloft.net>2008-02-28 11:23:17 -0800
commit21e43188f272c7fd9efc84b8244c0b1dfccaa105 (patch)
treead0313f88c3abe948e5a5ec61fd404a5cbfd2972 /net/ipv6/ipcomp6.c
parent60717f7e761ca04925d17e90e556e689ab134cdc (diff)
[IPCOMP]: Disable BH on output when using shared tfm
Because we use shared tfm objects in order to conserve memory, (each tfm requires 128K of vmalloc memory), BH needs to be turned off on output as that can occur in process context. Previously this was done implicitly by the xfrm output code. That was lost when it became lockless. So we need to add the BH disabling to IPComp directly. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/ipcomp6.c')
1 files changed, 2 insertions, 0 deletions
diff --git a/net/ipv6/ipcomp6.c b/net/ipv6/ipcomp6.c
index b90039593a7..e3dcfa2f436 100644
--- a/net/ipv6/ipcomp6.c
+++ b/net/ipv6/ipcomp6.c
@@ -146,7 +146,9 @@ static int ipcomp6_output(struct xfrm_state *x, struct sk_buff *skb)
scratch = *per_cpu_ptr(ipcomp6_scratches, cpu);
tfm = *per_cpu_ptr(ipcd->tfms, cpu);
+ local_bh_disable();
err = crypto_comp_compress(tfm, start, plen, scratch, &dlen);
+ local_bh_enable();
if (err || (dlen + sizeof(*ipch)) >= plen) {
goto out_ok;