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net: pktgen: disable xmit_clone on virtual devices

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Trying to use burst capability (aka xmit_more) on a virtual device
like bonding is not supported.

For example, skb might be queued multiple times on a qdisc, with
various list corruptions.

Fixes: 38b2cf2982dc ("net: pktgen: packet bursting via skb->xmit_more")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Alexei Starovoitov <ast@plumgrid.com>
Acked-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet 2015-02-22 17:03:41 -08:00 committed by David S. Miller
parent 87cda7cb43
commit 52d6c8c6ca
1 changed files with 3 additions and 0 deletions
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3
net/core/pktgen.c
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@ -1134,6 +1134,9 @@ static ssize_t pktgen_if_write(struct file *file,
return len;
i += len;
if ((value > 1) &&
(!(pkt_dev->odev->priv_flags & IFF_TX_SKB_SHARING)))
return -ENOTSUPP;
pkt_dev->burst = value < 1 ? 1 : value;
sprintf(pg_result, "OK: burst=%d", pkt_dev->burst);
return count;