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mlxsw: switchx2: Don't count internal TX header bytes to stats

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Stop the SW TX counter from counting the TX header bytes
since they are not being sent out.

Fixes: e577516b9d ("mlxsw: Fix use-after-free bug in mlxsw_sx_port_xmit")
Signed-off-by: Nogah Frankel <[email protected]>
Reviewed-by: Ido Schimmel <[email protected]>
Signed-off-by: Jiri Pirko <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Nogah Frankel authored and David S. Miller committed 2016-06-17 21:57:53 -07:00
1 parent 63dcdd35c1
commit 4e239fac7c
1 file changed
+4 -1
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drivers/net/ethernet/mellanox/mlxsw/switchx2.c
+4 -1
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@@ -316,7 +316,10 @@ static netdev_tx_t mlxsw_sx_port_xmit(struct sk_buff *skb,
}
}
mlxsw_sx_txhdr_construct(skb, &tx_info);
len = skb->len;
/* TX header is consumed by HW on the way so we shouldn't count its
* bytes as being sent.
*/
len = skb->len - MLXSW_TXHDR_LEN;
/* Due to a race we might fail here because of a full queue. In that
* unlikely case we simply drop the packet.
*/