From: Eric Dumazet <eric.dumazet@gmail.com>
To: David Miller <davem@davemloft.net>
Cc: netdev <netdev@vger.kernel.org>
Subject: [PATCH net-next-2.6] ipv6: avoid two atomics in ipv6_rthdr_rcv()
Date: Mon, 14 Jun 2010 16:39:27 +0200 [thread overview]
Message-ID: <1276526367.2478.98.camel@edumazet-laptop> (raw)
Use __in6_dev_get() instead of in6_dev_get()/in6_dev_put()
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
---
net/ipv6/exthdrs.c | 10 ++++------
1 file changed, 4 insertions(+), 6 deletions(-)
diff --git a/net/ipv6/exthdrs.c b/net/ipv6/exthdrs.c
index 853a633..262f105 100644
--- a/net/ipv6/exthdrs.c
+++ b/net/ipv6/exthdrs.c
@@ -312,6 +312,7 @@ static int ipv6_destopt_rcv(struct sk_buff *skb)
Routing header.
********************************/
+/* called with rcu_read_lock() */
static int ipv6_rthdr_rcv(struct sk_buff *skb)
{
struct inet6_skb_parm *opt = IP6CB(skb);
@@ -324,12 +325,9 @@ static int ipv6_rthdr_rcv(struct sk_buff *skb)
struct net *net = dev_net(skb->dev);
int accept_source_route = net->ipv6.devconf_all->accept_source_route;
- idev = in6_dev_get(skb->dev);
- if (idev) {
- if (accept_source_route > idev->cnf.accept_source_route)
- accept_source_route = idev->cnf.accept_source_route;
- in6_dev_put(idev);
- }
+ idev = __in6_dev_get(skb->dev);
+ if (idev && accept_source_route > idev->cnf.accept_source_route)
+ accept_source_route = idev->cnf.accept_source_route;
if (!pskb_may_pull(skb, skb_transport_offset(skb) + 8) ||
!pskb_may_pull(skb, (skb_transport_offset(skb) +
next reply other threads:[~2010-06-14 14:39 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-06-14 14:39 Eric Dumazet [this message]
2010-06-15 6:14 ` [PATCH net-next-2.6] ipv6: avoid two atomics in ipv6_rthdr_rcv() David Miller
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