print the return code of ib_post_send() if it fails
to help debug errors
Signed-off-by: Or Gerlitz <[email protected]>
---
drivers/infiniband/ulp/ipoib/ipoib_cm.c | 8 +++++---
drivers/infiniband/ulp/ipoib/ipoib_ib.c | 9 +++++----
2 files changed, 10 insertions(+), 7 deletions(-)
Index: a/drivers/infiniband/ulp/ipoib/ipoib_ib.c
===================================================================
--- a/drivers/infiniband/ulp/ipoib/ipoib_ib.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_ib.c
@@ -529,7 +529,7 @@ void ipoib_send(struct net_device *dev,
{
struct ipoib_dev_priv *priv = netdev_priv(dev);
struct ipoib_tx_buf *tx_req;
- int hlen;
+ int hlen, rc;
void *phead;
if (skb_is_gso(skb)) {
@@ -585,9 +585,10 @@ void ipoib_send(struct net_device *dev,
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");
+ rc = post_send(priv, priv->tx_head & (ipoib_sendq_size - 1),
+ address->ah, qpn, tx_req, phead, hlen);
+ if (unlikely(rc)) {
+ ipoib_warn(priv, "post_send failed, error %d\n", rc);
++dev->stats.tx_errors;
--priv->tx_outstanding;
ipoib_dma_unmap_tx(priv->ca, tx_req);
Index: a/drivers/infiniband/ulp/ipoib/ipoib_cm.c
===================================================================
--- a/drivers/infiniband/ulp/ipoib/ipoib_cm.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_cm.c
@@ -708,6 +708,7 @@ void ipoib_cm_send(struct net_device *de
struct ipoib_dev_priv *priv = netdev_priv(dev);
struct ipoib_cm_tx_buf *tx_req;
u64 addr;
+ int rc;
if (unlikely(skb->len > tx->mtu)) {
ipoib_warn(priv, "packet len %d (> %d) too long to send,
dropping\n",
@@ -739,9 +740,10 @@ void ipoib_cm_send(struct net_device *de
tx_req->mapping = addr;
- if (unlikely(post_send(priv, tx, tx->tx_head & (ipoib_sendq_size - 1),
- addr, skb->len))) {
- ipoib_warn(priv, "post_send failed\n");
+ rc = post_send(priv, tx, tx->tx_head & (ipoib_sendq_size - 1),
+ addr, skb->len);
+ if (unlikely(rc)) {
+ ipoib_warn(priv, "post_send failed, error %d\n", rc);
++dev->stats.tx_errors;
ib_dma_unmap_single(priv->ca, addr, skb->len, DMA_TO_DEVICE);
dev_kfree_skb_any(skb);
--
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