diff options
| author |   Steve Wise <swise@opengridcomputing.com> | 2016-12-22 07:40:37 -0800 |
|---|---|---|
| committer |   Doug Ledford <dledford@redhat.com> | 2017-01-10 14:01:38 -0500 |
| commit | 3bcf96e0183f5c863657cb6ae9adad307a0f6071 (patch) | |
| tree | 46483f5effe2858b0f0f20cf55a137cd87387205 /drivers/infiniband/hw/cxgb4 | |
| parent | iw_cxgb4: free EQ queue memory on last deref (diff) | |
| download | linux-dev-3bcf96e0183f5c863657cb6ae9adad307a0f6071.tar.xz linux-dev-3bcf96e0183f5c863657cb6ae9adad307a0f6071.zip | |
iw_cxgb4: do not send RX_DATA_ACK CPLs after close/abort
Function rx_data(), which handles ingress CPL_RX_DATA messages, was
always sending an RX_DATA_ACK with the goal of updating the credits.
However, if the RDMA connection is moved out of FPDU mode abruptly,
then it is possible for iw_cxgb4 to process queued RX_DATA CPLs after HW
has aborted the connection. These CPLs should not trigger RX_DATA_ACKS.
If they do, HW can see a READ after DELETE of the DB_LE hash entry for
the tid and post a LE_DB HashTblMemCrcError.
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/hw/cxgb4')
| -rw-r--r-- | drivers/infiniband/hw/cxgb4/cm.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/infiniband/hw/cxgb4/cm.c b/drivers/infiniband/hw/cxgb4/cm.c index f1510cc76d2d..9398143d7c5e 100644 --- a/drivers/infiniband/hw/cxgb4/cm.c +++ b/drivers/infiniband/hw/cxgb4/cm.c @@ -1804,20 +1804,21 @@ static int rx_data(struct c4iw_dev *dev, struct sk_buff *skb) skb_trim(skb, dlen); mutex_lock(&ep->com.mutex); - /* update RX credits */ - update_rx_credits(ep, dlen); - switch (ep->com.state) { case MPA_REQ_SENT: + update_rx_credits(ep, dlen); ep->rcv_seq += dlen; disconnect = process_mpa_reply(ep, skb); break; case MPA_REQ_WAIT: + update_rx_credits(ep, dlen); ep->rcv_seq += dlen; disconnect = process_mpa_request(ep, skb); break; case FPDU_MODE: { struct c4iw_qp_attributes attrs; + + update_rx_credits(ep, dlen); BUG_ON(!ep->com.qp); if (status) pr_err("%s Unexpected streaming data." \ |