package/kernel/mac80211/patches/351-0027-brcmfmac-restore-stopping-netdev-queue-when-bus-clog.patch

   1 From: Arend Van Spriel <arend.vanspriel@broadcom.com>
   2 Date: Fri, 15 Jul 2016 12:16:12 +0200
   3 Subject: [PATCH] brcmfmac: restore stopping netdev queue when bus clogs up
   4 MIME-Version: 1.0
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   7
   8 When the host-interface bus has hard time handling transmit packets
   9 it informs higher layer about this and it would stop the netdev
  10 queue when needed. However, since commit 9cd18359d31e ("brcmfmac:
  11 Make FWS queueing configurable.") this was broken. With this patch
  12 the behaviour is restored.
  13
  14 Cc: stable@vger.kernel.org # v4.5, v4.6, v4.7
  15 Fixes: 9cd18359d31e ("brcmfmac: Make FWS queueing configurable.")
  16 Tested-by: Per FÃ¶rlin <per.forlin@gmail.com>
  17 Reviewed-by: Hante Meuleman <hante.meuleman@broadcom.com>
  18 Reviewed-by: Pieter-Paul Giesberts <pieter-paul.giesberts@broadcom.com>
  19 Reviewed-by: Franky Lin <franky.lin@broadcom.com>
  20 Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
  21 Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
  22 ---
  23
  24 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwsignal.c
  25 +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwsignal.c
  26 @@ -2469,10 +2469,22 @@ void brcmf_fws_bustxfail(struct brcmf_fw
  27  void brcmf_fws_bus_blocked(struct brcmf_pub *drvr, bool flow_blocked)
  28  {
  29         struct brcmf_fws_info *fws = drvr->fws;
  30 +       struct brcmf_if *ifp;
  31 +       int i;
  32
  33 -       fws->bus_flow_blocked = flow_blocked;
  34 -       if (!flow_blocked)
  35 -               brcmf_fws_schedule_deq(fws);
  36 -       else
  37 -               fws->stats.bus_flow_block++;
  38 +       if (fws->avoid_queueing) {
  39 +               for (i = 0; i < BRCMF_MAX_IFS; i++) {
  40 +                       ifp = drvr->iflist[i];
  41 +                       if (!ifp || !ifp->ndev)
  42 +                               continue;
  43 +                       brcmf_txflowblock_if(ifp, BRCMF_NETIF_STOP_REASON_FLOW,
  44 +                                            flow_blocked);
  45 +               }
  46 +       } else {
  47 +               fws->bus_flow_blocked = flow_blocked;
  48 +               if (!flow_blocked)
  49 +                       brcmf_fws_schedule_deq(fws);
  50 +               else
  51 +                       fws->stats.bus_flow_block++;
  52 +       }
  53  }