On Fri, 2017-09-22 at 19:42 -0400, Willem de Bruijn wrote:
> Zerocopy skbs frags are copied when the skb is looped to a local sock.
> Commit 1080e512d44d ("net: orphan frags on receive") introduced calls
> to skb_orphan_frags to deliver_skb and __netif_receive_skb for this.
>
> With msg_zerocopy, these skbs can also exist in the tx path and thus
> loop from dev_queue_xmit_nit. This already calls deliver_skb in its
> loop. But it does not orphan before a separate pt_prev->func().
>
> Add the missing skb_orphan_frags_rx.
>
> Changes
> v1->v2: handle skb_orphan_frags_rx failure
>
> Fixes: 1f8b977ab32d ("sock: enable MSG_ZEROCOPY")
> Signed-off-by: Willem de Bruijn <[email protected]>
> ---
> net/core/dev.c | 8 ++++++--
> 1 file changed, 6 insertions(+), 2 deletions(-)
Reviewed-by: Eric Dumazet <[email protected]>
