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path: root/drivers/infiniband/ulp/ipoib/ipoib_ib.c
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Diffstat (limited to 'drivers/infiniband/ulp/ipoib/ipoib_ib.c')
-rw-r--r--drivers/infiniband/ulp/ipoib/ipoib_ib.c90
1 files changed, 67 insertions, 23 deletions
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_ib.c b/drivers/infiniband/ulp/ipoib/ipoib_ib.c
index 7cf1fa7074ab..f429bce24c20 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_ib.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_ib.c
@@ -364,7 +364,6 @@ static void ipoib_ib_handle_tx_wc(struct net_device *dev, struct ib_wc *wc)
struct ipoib_dev_priv *priv = netdev_priv(dev);
unsigned int wr_id = wc->wr_id;
struct ipoib_tx_buf *tx_req;
- unsigned long flags;
ipoib_dbg_data(priv, "send completion: id %d, status: %d\n",
wr_id, wc->status);
@@ -384,13 +383,11 @@ static void ipoib_ib_handle_tx_wc(struct net_device *dev, struct ib_wc *wc)
dev_kfree_skb_any(tx_req->skb);
- spin_lock_irqsave(&priv->tx_lock, flags);
++priv->tx_tail;
if (unlikely(--priv->tx_outstanding == ipoib_sendq_size >> 1) &&
netif_queue_stopped(dev) &&
test_bit(IPOIB_FLAG_ADMIN_UP, &priv->flags))
netif_wake_queue(dev);
- spin_unlock_irqrestore(&priv->tx_lock, flags);
if (wc->status != IB_WC_SUCCESS &&
wc->status != IB_WC_WR_FLUSH_ERR)
@@ -399,6 +396,17 @@ static void ipoib_ib_handle_tx_wc(struct net_device *dev, struct ib_wc *wc)
wc->status, wr_id, wc->vendor_err);
}
+static int poll_tx(struct ipoib_dev_priv *priv)
+{
+ int n, i;
+
+ n = ib_poll_cq(priv->send_cq, MAX_SEND_CQE, priv->send_wc);
+ for (i = 0; i < n; ++i)
+ ipoib_ib_handle_tx_wc(priv->dev, priv->send_wc + i);
+
+ return n == MAX_SEND_CQE;
+}
+
int ipoib_poll(struct napi_struct *napi, int budget)
{
struct ipoib_dev_priv *priv = container_of(napi, struct ipoib_dev_priv, napi);
@@ -414,7 +422,7 @@ poll_more:
int max = (budget - done);
t = min(IPOIB_NUM_WC, max);
- n = ib_poll_cq(priv->cq, t, priv->ibwc);
+ n = ib_poll_cq(priv->recv_cq, t, priv->ibwc);
for (i = 0; i < n; i++) {
struct ib_wc *wc = priv->ibwc + i;
@@ -425,12 +433,8 @@ poll_more:
ipoib_cm_handle_rx_wc(dev, wc);
else
ipoib_ib_handle_rx_wc(dev, wc);
- } else {
- if (wc->wr_id & IPOIB_OP_CM)
- ipoib_cm_handle_tx_wc(dev, wc);
- else
- ipoib_ib_handle_tx_wc(dev, wc);
- }
+ } else
+ ipoib_cm_handle_tx_wc(priv->dev, wc);
}
if (n != t)
@@ -439,7 +443,7 @@ poll_more:
if (done < budget) {
netif_rx_complete(dev, napi);
- if (unlikely(ib_req_notify_cq(priv->cq,
+ if (unlikely(ib_req_notify_cq(priv->recv_cq,
IB_CQ_NEXT_COMP |
IB_CQ_REPORT_MISSED_EVENTS)) &&
netif_rx_reschedule(dev, napi))
@@ -457,6 +461,26 @@ void ipoib_ib_completion(struct ib_cq *cq, void *dev_ptr)
netif_rx_schedule(dev, &priv->napi);
}
+static void drain_tx_cq(struct net_device *dev)
+{
+ struct ipoib_dev_priv *priv = netdev_priv(dev);
+ unsigned long flags;
+
+ spin_lock_irqsave(&priv->tx_lock, flags);
+ while (poll_tx(priv))
+ ; /* nothing */
+
+ if (netif_queue_stopped(dev))
+ mod_timer(&priv->poll_timer, jiffies + 1);
+
+ spin_unlock_irqrestore(&priv->tx_lock, flags);
+}
+
+void ipoib_send_comp_handler(struct ib_cq *cq, void *dev_ptr)
+{
+ drain_tx_cq((struct net_device *)dev_ptr);
+}
+
static inline int post_send(struct ipoib_dev_priv *priv,
unsigned int wr_id,
struct ib_ah *address, u32 qpn,
@@ -551,23 +575,34 @@ void ipoib_send(struct net_device *dev, struct sk_buff *skb,
else
priv->tx_wr.send_flags &= ~IB_SEND_IP_CSUM;
+ if (++priv->tx_outstanding == ipoib_sendq_size) {
+ ipoib_dbg(priv, "TX ring full, stopping kernel net queue\n");
+ if (ib_req_notify_cq(priv->send_cq, IB_CQ_NEXT_COMP))
+ ipoib_warn(priv, "request notify on send CQ failed\n");
+ netif_stop_queue(dev);
+ }
+
if (unlikely(post_send(priv, priv->tx_head & (ipoib_sendq_size - 1),
address->ah, qpn, tx_req, phead, hlen))) {
ipoib_warn(priv, "post_send failed\n");
++dev->stats.tx_errors;
+ --priv->tx_outstanding;
ipoib_dma_unmap_tx(priv->ca, tx_req);
dev_kfree_skb_any(skb);
+ if (netif_queue_stopped(dev))
+ netif_wake_queue(dev);
} else {
dev->trans_start = jiffies;
address->last_send = priv->tx_head;
++priv->tx_head;
+ skb_orphan(skb);
- if (++priv->tx_outstanding == ipoib_sendq_size) {
- ipoib_dbg(priv, "TX ring full, stopping kernel net queue\n");
- netif_stop_queue(dev);
- }
}
+
+ if (unlikely(priv->tx_outstanding > MAX_SEND_CQE))
+ while (poll_tx(priv))
+ ; /* nothing */
}
static void __ipoib_reap_ah(struct net_device *dev)
@@ -601,6 +636,11 @@ void ipoib_reap_ah(struct work_struct *work)
round_jiffies_relative(HZ));
}
+static void ipoib_ib_tx_timer_func(unsigned long ctx)
+{
+ drain_tx_cq((struct net_device *)ctx);
+}
+
int ipoib_ib_dev_open(struct net_device *dev)
{
struct ipoib_dev_priv *priv = netdev_priv(dev);
@@ -637,6 +677,10 @@ int ipoib_ib_dev_open(struct net_device *dev)
queue_delayed_work(ipoib_workqueue, &priv->ah_reap_task,
round_jiffies_relative(HZ));
+ init_timer(&priv->poll_timer);
+ priv->poll_timer.function = ipoib_ib_tx_timer_func;
+ priv->poll_timer.data = (unsigned long)dev;
+
set_bit(IPOIB_FLAG_INITIALIZED, &priv->flags);
return 0;
@@ -714,7 +758,7 @@ void ipoib_drain_cq(struct net_device *dev)
struct ipoib_dev_priv *priv = netdev_priv(dev);
int i, n;
do {
- n = ib_poll_cq(priv->cq, IPOIB_NUM_WC, priv->ibwc);
+ n = ib_poll_cq(priv->recv_cq, IPOIB_NUM_WC, priv->ibwc);
for (i = 0; i < n; ++i) {
/*
* Convert any successful completions to flush
@@ -729,14 +773,13 @@ void ipoib_drain_cq(struct net_device *dev)
ipoib_cm_handle_rx_wc(dev, priv->ibwc + i);
else
ipoib_ib_handle_rx_wc(dev, priv->ibwc + i);
- } else {
- if (priv->ibwc[i].wr_id & IPOIB_OP_CM)
- ipoib_cm_handle_tx_wc(dev, priv->ibwc + i);
- else
- ipoib_ib_handle_tx_wc(dev, priv->ibwc + i);
- }
+ } else
+ ipoib_cm_handle_tx_wc(dev, priv->ibwc + i);
}
} while (n == IPOIB_NUM_WC);
+
+ while (poll_tx(priv))
+ ; /* nothing */
}
int ipoib_ib_dev_stop(struct net_device *dev, int flush)
@@ -803,6 +846,7 @@ int ipoib_ib_dev_stop(struct net_device *dev, int flush)
ipoib_dbg(priv, "All sends and receives done.\n");
timeout:
+ del_timer_sync(&priv->poll_timer);
qp_attr.qp_state = IB_QPS_RESET;
if (ib_modify_qp(priv->qp, &qp_attr, IB_QP_STATE))
ipoib_warn(priv, "Failed to modify QP to RESET state\n");
@@ -826,7 +870,7 @@ timeout:
msleep(1);
}
- ib_req_notify_cq(priv->cq, IB_CQ_NEXT_COMP);
+ ib_req_notify_cq(priv->recv_cq, IB_CQ_NEXT_COMP);
return 0;
}
generated by cgit v1.2.3 (git 2.25.1) at 2025-01-10 08:52:33 +0000