Commit 4fe44dd7 authored Feb 18, 2014 by Kumar Sanghvi Committed by David S. Miller Feb 18, 2014

cxgb4: LE-Workaround is not atomic in firmware

The LE workaround in firmware is not atomic and fw_ofld_connection_wrs must not interleave.
Therefore, when the workaround is enabled, we need to send all ctrlq WRs on a single ctrl queue.

Based on original work by Santosh Rastapur <santosh@chelsio.com>

Signed-off-by: Kumar Sanghvi <kumaras@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent 57d8b764

drivers/net/ethernet/chelsio/cxgb4/sge.c

+5 −1

Original line number	Diff line number	Diff line
		@@ -1467,8 +1467,12 @@ static inline int ofld_send(struct adapter adap, struct sk_buff skb)
		{
		unsigned int idx = skb_txq(skb);

		if (unlikely(is_ctrl_pkt(skb)))
		if (unlikely(is_ctrl_pkt(skb))) {
		/* Single ctrl queue is a requirement for LE workaround path */
		if (adap->tids.nsftids)
		idx = 0;
		return ctrl_xmit(&adap->sge.ctrlq[idx], skb);
		}
		return ofld_xmit(&adap->sge.ofldtxq[idx], skb);
		}