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path: root/drivers/net/ethernet/chelsio/cxgb4/sge.c
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Diffstat (limited to 'drivers/net/ethernet/chelsio/cxgb4/sge.c')
-rw-r--r--drivers/net/ethernet/chelsio/cxgb4/sge.c40
1 files changed, 37 insertions, 3 deletions
diff --git a/drivers/net/ethernet/chelsio/cxgb4/sge.c b/drivers/net/ethernet/chelsio/cxgb4/sge.c
index f5dd34db4b54..6516c45864b3 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/sge.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/sge.c
@@ -2207,6 +2207,9 @@ static void ethofld_hard_xmit(struct net_device *dev,
if (unlikely(skip_eotx_wr)) {
start = (u64 *)wr;
eosw_txq->state = next_state;
+ eosw_txq->cred -= wrlen16;
+ eosw_txq->ncompl++;
+ eosw_txq->last_compl = 0;
goto write_wr_headers;
}
@@ -2365,6 +2368,34 @@ netdev_tx_t t4_start_xmit(struct sk_buff *skb, struct net_device *dev)
return cxgb4_eth_xmit(skb, dev);
}
+static void eosw_txq_flush_pending_skbs(struct sge_eosw_txq *eosw_txq)
+{
+ int pktcount = eosw_txq->pidx - eosw_txq->last_pidx;
+ int pidx = eosw_txq->pidx;
+ struct sk_buff *skb;
+
+ if (!pktcount)
+ return;
+
+ if (pktcount < 0)
+ pktcount += eosw_txq->ndesc;
+
+ while (pktcount--) {
+ pidx--;
+ if (pidx < 0)
+ pidx += eosw_txq->ndesc;
+
+ skb = eosw_txq->desc[pidx].skb;
+ if (skb) {
+ dev_consume_skb_any(skb);
+ eosw_txq->desc[pidx].skb = NULL;
+ eosw_txq->inuse--;
+ }
+ }
+
+ eosw_txq->pidx = eosw_txq->last_pidx + 1;
+}
+
/**
* cxgb4_ethofld_send_flowc - Send ETHOFLD flowc request to bind eotid to tc.
* @dev - netdevice
@@ -2440,9 +2471,11 @@ int cxgb4_ethofld_send_flowc(struct net_device *dev, u32 eotid, u32 tc)
FW_FLOWC_MNEM_EOSTATE_CLOSING :
FW_FLOWC_MNEM_EOSTATE_ESTABLISHED);
- eosw_txq->cred -= len16;
- eosw_txq->ncompl++;
- eosw_txq->last_compl = 0;
+ /* Free up any pending skbs to ensure there's room for
+ * termination FLOWC.
+ */
+ if (tc == FW_SCHED_CLS_NONE)
+ eosw_txq_flush_pending_skbs(eosw_txq);
ret = eosw_txq_enqueue(eosw_txq, skb);
if (ret) {
@@ -2695,6 +2728,7 @@ static void ofldtxq_stop(struct sge_uld_txq *q, struct fw_wr_hdr *wr)
* is ever running at a time ...
*/
static void service_ofldq(struct sge_uld_txq *q)
+ __must_hold(&q->sendq.lock)
{
u64 *pos, *before, *end;
int credits;