Re: [Xen-devel] [PATCH v4] core, nfqueue, openvswitch: Orphan frags in skb_zerocopy and handle errors

[David Miller <davem@xxxxxxxxxxxxx>]

From: David Miller <davem@xxxxxxxxxxxxx>
Date: Wed, 26 Mar 2014 15:59:58 -0400 (EDT)

> From: Zoltan Kiss <zoltan.kiss@xxxxxxxxxx>
> Date: Fri, 21 Mar 2014 10:31:34 +0000
> 
>> skb_zerocopy can copy elements of the frags array between skbs, but it 
>> doesn't
>> orphan them. Also, it doesn't handle errors, so this patch takes care of that
>> as well, and modify the callers accordingly. skb_tx_error() is also added to
>> the callers so they will signal the failed delivery towards the creator of 
>> the
>> skb.
>> 
>> Signed-off-by: Zoltan Kiss <zoltan.kiss@xxxxxxxxxx>
> 
> Applied, thanks Zoltan.

Actually, Zoltan, you have to fix this:

net/core/skbuff.c: In function ʽskb_zerocopyʼ:
net/core/skbuff.c:2172:2: warning: passing argument 1 of ʽskb_orphan_fragsʼ 
discards ʽconstʼ qualifi
er from pointer target type [enabled by default]
In file included from include/linux/tcp.h:21:0,
                 from net/core/skbuff.c:50:
include/linux/skbuff.h:1904:19: note: expected ʽstruct sk_buff *ʼ but argument 
is of type ʽconst str
uct sk_buff *ʼ
net/core/skbuff.c:2173:3: warning: passing argument 1 of ʽskb_tx_errorʼ 
discards ʽconstʼ qualifier f
rom pointer target type [enabled by default]
net/core/skbuff.c:642:6: note: expected ʽstruct sk_buff *ʼ but argument is of 
type ʽconst struct sk_
buff *ʼ
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