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xsk: do not return ENXIO from TX copy mode

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This patch removes the ENXIO return code from TX copy-mode when
someone has forcefully changed the number of queues on the device so
that the queue bound to the socket is no longer available. Just
silently stop sending anything as in zero-copy mode so the error
reporting gets consistent between the two modes.

Fixes: 35fcde7f8d ("xsk: support for Tx")
Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
This commit is contained in:
Magnus Karlsson 2018-07-11 10:12:49 +02:00 committed by Daniel Borkmann
parent c7a8978432
commit 509d764813
1 changed files with 1 additions and 3 deletions
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4
net/xdp/xsk.c
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@ -244,10 +244,8 @@ static int xsk_generic_xmit(struct sock *sk, struct msghdr *m,
goto out;
}
if (xs->queue_id >= xs->dev->real_num_tx_queues) {
err = -ENXIO;
if (xs->queue_id >= xs->dev->real_num_tx_queues)
goto out;
}
skb = sock_alloc_send_skb(sk, len, 1, &err);
if (unlikely(!skb)) {