dpdk/dpdk-2.2.0_patches/0012-enic-fix-last-packet-not-being-sent.patch

   1 From a31a1dbdf5e1ff46d04f50fea02e83453b84652c Mon Sep 17 00:00:00 2001
   2 From: John Daley <johndale@cisco.com>
   3 Date: Tue, 8 Mar 2016 10:49:07 -0800
   4 Subject: [PATCH 12/22]     enic: fix last packet not being sent
   5
   6     The last packet of the tx burst function array was not being
   7     emitted until the subsequent call.  The nic descriptor index
   8     was being set to the current tx descriptor instead of one past
   9     the descriptor as required by the nic.
  10
  11     Fixes: d739ba4c6abf ("enic: improve Tx packet rate")
  12
  13     Signed-off-by: John Daley <johndale@cisco.com>
  14 ---
  15  drivers/net/enic/base/enic_vnic_wq.h | 6 +++---
  16  1 file changed, 3 insertions(+), 3 deletions(-)
  17
  18 diff --git a/drivers/net/enic/base/enic_vnic_wq.h b/drivers/net/enic/base/enic_vnic_wq.h
  19 index e3ea574..b019109 100644
  20 --- a/drivers/net/enic/base/enic_vnic_wq.h
  21 +++ b/drivers/net/enic/base/enic_vnic_wq.h
  22 @@ -69,11 +69,11 @@ static inline void enic_vnic_post_wq(struct vnic_wq *wq,
  23         buf->wr_id = wrid;
  24
  25         buf = buf->next;
  26 -       if (cq_entry)
  27 -               enic_vnic_post_wq_index(wq);
  28 +       wq->ring.desc_avail -= desc_skip_cnt;
  29         wq->to_use = buf;
  30
  31 -       wq->ring.desc_avail -= desc_skip_cnt;
  32 +       if (cq_entry)
  33 +               enic_vnic_post_wq_index(wq);
  34  }
  35
  36  #endif /* _ENIC_VNIC_WQ_H_ */
  37 --
  38 1.9.1
  39