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net_sched: always clone skbs

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Pawel reported a panic related to handling shared skbs in ixgbe
incorrectly. So we need to revert my previous patch to work around
this bug. Instead of reverting the patch completely, I just revert
the essential lines, so we can add the previous optimization
back more easily in future.

    commit 3511c9132f
    Author: Changli Gao <xiaosuo@gmail.com>
    Date:   Sat Oct 16 13:04:08 2010 +0000

        net_sched: remove the unused parameter of qdisc_create_dflt()

Reported-by: Pawel Staszewski <pstaszewski@itcare.pl>
Signed-off-by: Changli Gao <xiaosuo@gmail.com>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Changli Gao 2010-12-20 04:35:30 +00:00 committed by David S. Miller
parent ad0081e43a
commit 173021072e
1 changed files with 1 additions and 5 deletions
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6
include/net/sch_generic.h
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@ -610,11 +610,7 @@ static inline struct sk_buff *skb_act_clone(struct sk_buff *skb, gfp_t gfp_mask,
{
struct sk_buff *n;
if ((action == TC_ACT_STOLEN || action == TC_ACT_QUEUED) &&
!skb_shared(skb))
n = skb_get(skb);
else
n = skb_clone(skb, gfp_mask);
n = skb_clone(skb, gfp_mask);
if (n) {
n->tc_verd = SET_TC_VERD(n->tc_verd, 0);