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| author | Kumar Sanghvi | 2014-02-18 13:26:11 +0100 |
|---|---|---|
| committer | David S. Miller | 2014-02-18 22:23:01 +0100 |
| commit | 4fe44dd77602fef804561c46ad10b988ee2859ac (patch) | |
| tree | ac3b08e389d89b0f1b0eb8acc67dd4b5fdf6ca33 /drivers/net/ethernet/chelsio | |
| parent | cxgb4: Allow >10G ports to have multiple queues (diff) | |
| download | kernel-qcow2-linux-4fe44dd77602fef804561c46ad10b988ee2859ac.tar.gz kernel-qcow2-linux-4fe44dd77602fef804561c46ad10b988ee2859ac.tar.xz kernel-qcow2-linux-4fe44dd77602fef804561c46ad10b988ee2859ac.zip | |
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>
Diffstat (limited to 'drivers/net/ethernet/chelsio')
| -rw-r--r-- | drivers/net/ethernet/chelsio/cxgb4/sge.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/net/ethernet/chelsio/cxgb4/sge.c b/drivers/net/ethernet/chelsio/cxgb4/sge.c index 47ffa64fcf19..23dbe28f8aca 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/sge.c +++ b/drivers/net/ethernet/chelsio/cxgb4/sge.c @@ -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); } |