net: pktgen: disable xmit_clone on virtual devices

[karo-tx-linux.git] / net / core / pktgen.c

diff --git a/net/core/pktgen.c b/net/core/pktgen.c
index b4899f5b7388e8f0c825a433a1f633d6b087a0f9..508155b283ddcc73a967a2bc8068e67cb8cada7d 100644 (file)
--- a/net/core/pktgen.c
+++ b/net/core/pktgen.c
@@ -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;