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sched, bpf: let stack handle !IFF_UP devs on bpf_clone_redirect

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Similarly as already the case in bpf_redirect()/skb_do_redirect()
pair, let the stack deal with devs that are !IFF_UP.

dev_forward_skb() as well as dev_queue_xmit() will free the skb
and increment drop counter internally in such cases, so we can
spare the condition in bpf_clone_redirect().

Signed-off-by: Daniel Borkmann <[email protected]>
Acked-by: Alexei Starovoitov <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Daniel Borkmann authored and David S. Miller committed 2015-09-23 14:25:51 -07:00
1 parent 644d0e6569
commit 927ab1d764
1 file changed
-3
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net/core/filter.c
-3
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@@ -1404,9 +1404,6 @@ static u64 bpf_clone_redirect(u64 r1, u64 ifindex, u64 flags, u64 r4, u64 r5)
if (unlikely(!dev))
return -EINVAL;
if (unlikely(!(dev->flags & IFF_UP)))
return -EINVAL;
skb2 = skb_clone(skb, GFP_ATOMIC);
if (unlikely(!skb2))
return -ENOMEM;