debian/patches/nicvf-0005-net-thunderx-wait-to-complete-during-link-update.patch

   1 From 0cca56708d781b42561e382fcbcb1f1647b932b9 Mon Sep 17 00:00:00 2001
   2 From: Andriy Berestovskyy <andriy.berestovskyy@caviumnetworks.com>
   3 Date: Fri, 31 Mar 2017 15:57:49 +0200
   4 Subject: [PATCH] net/thunderx: wait to complete during link update
   5
   6 Some DPDK applications/examples check link status on their
   7 start. NICVF does not wait for the link, so those apps fail.
   8
   9 Wait up to 9 seconds for the link as other PMDs do in order
  10 to fix those apps/examples.
  11
  12 Signed-off-by: Andriy Berestovskyy <andriy.berestovskyy@caviumnetworks.com>
  13 Acked-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>
  14 ---
  15  drivers/net/thunderx/nicvf_ethdev.c | 21 +++++++++++++++++----
  16  1 file changed, 17 insertions(+), 4 deletions(-)
  17
  18 Origin: http://dpdk.org/browse/dpdk/commit/?id=0cca56708d781b42561e382fcbcb1f1647b932b9
  19 Original-Author: Andriy Berestovskyy <andriy.berestovskyy@caviumnetworks.com>
  20 Bug-Ubuntu: https://bugs.launchpad.net/ubuntu/+source/dpdk/+bug/1691659
  21 Author: Christian Ehrhardt <christian.ehrhardt@canonical.com>
  22 Last-Update: 2017-05-18
  23
  24 --- a/drivers/net/thunderx/nicvf_ethdev.c
  25 +++ b/drivers/net/thunderx/nicvf_ethdev.c
  26 @@ -145,16 +145,29 @@
  27   * Return 0 means link status changed, -1 means not changed
  28   */
  29  static int
  30 -nicvf_dev_link_update(struct rte_eth_dev *dev,
  31 -                     int wait_to_complete __rte_unused)
  32 +nicvf_dev_link_update(struct rte_eth_dev *dev, int wait_to_complete)
  33  {
  34 +#define CHECK_INTERVAL 100  /* 100ms */
  35 +#define MAX_CHECK_TIME 90   /* 9s (90 * 100ms) in total */
  36         struct rte_eth_link link;
  37         struct nicvf *nic = nicvf_pmd_priv(dev);
  38 +       int i;
  39
  40         PMD_INIT_FUNC_TRACE();
  41
  42 -       memset(&link, 0, sizeof(link));
  43 -       nicvf_set_eth_link_status(nic, &link);
  44 +       if (wait_to_complete) {
  45 +               /* rte_eth_link_get() might need to wait up to 9 seconds */
  46 +               for (i = 0; i < MAX_CHECK_TIME; i++) {
  47 +                       memset(&link, 0, sizeof(link));
  48 +                       nicvf_set_eth_link_status(nic, &link);
  49 +                       if (link.link_status)
  50 +                               break;
  51 +                       rte_delay_ms(CHECK_INTERVAL);
  52 +               }
  53 +       } else {
  54 +               memset(&link, 0, sizeof(link));
  55 +               nicvf_set_eth_link_status(nic, &link);
  56 +       }
  57         return nicvf_atomic_write_link_status(dev, &link);
  58  }
  59