This is a note to let you know that I've just added the patch titled
brcmfmac: restore stopping netdev queue when bus clogs up
to the 4.7-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
brcmfmac-restore-stopping-netdev-queue-when-bus-clogs-up.patch
and it can be found in the queue-4.7 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 82bc9ab6a8f577d2174a736c33f3d4ecf7d9ef47 Mon Sep 17 00:00:00 2001
From: Arend Van Spriel <arend.vanspriel@xxxxxxxxxxxx>
Date: Fri, 15 Jul 2016 12:16:12 +0200
Subject: brcmfmac: restore stopping netdev queue when bus clogs up
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From: Arend Van Spriel <arend.vanspriel@xxxxxxxxxxxx>
commit 82bc9ab6a8f577d2174a736c33f3d4ecf7d9ef47 upstream.
When the host-interface bus has hard time handling transmit packets
it informs higher layer about this and it would stop the netdev
queue when needed. However, since commit 9cd18359d31e ("brcmfmac:
Make FWS queueing configurable.") this was broken. With this patch
the behaviour is restored.
Fixes: 9cd18359d31e ("brcmfmac: Make FWS queueing configurable.")
Tested-by: Per Förlin <per.forlin@xxxxxxxxx>
Reviewed-by: Hante Meuleman <hante.meuleman@xxxxxxxxxxxx>
Reviewed-by: Pieter-Paul Giesberts <pieter-paul.giesberts@xxxxxxxxxxxx>
Reviewed-by: Franky Lin <franky.lin@xxxxxxxxxxxx>
Signed-off-by: Arend van Spriel <arend.vanspriel@xxxxxxxxxxxx>
Signed-off-by: Kalle Valo <kvalo@xxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwsignal.c | 22 +++++++++---
1 file changed, 17 insertions(+), 5 deletions(-)
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwsignal.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwsignal.c
@@ -2469,10 +2469,22 @@ void brcmf_fws_bustxfail(struct brcmf_fw
void brcmf_fws_bus_blocked(struct brcmf_pub *drvr, bool flow_blocked)
{
struct brcmf_fws_info *fws = drvr->fws;
+ struct brcmf_if *ifp;
+ int i;
- fws->bus_flow_blocked = flow_blocked;
- if (!flow_blocked)
- brcmf_fws_schedule_deq(fws);
- else
- fws->stats.bus_flow_block++;
+ if (fws->avoid_queueing) {
+ for (i = 0; i < BRCMF_MAX_IFS; i++) {
+ ifp = drvr->iflist[i];
+ if (!ifp || !ifp->ndev)
+ continue;
+ brcmf_txflowblock_if(ifp, BRCMF_NETIF_STOP_REASON_FLOW,
+ flow_blocked);
+ }
+ } else {
+ fws->bus_flow_blocked = flow_blocked;
+ if (!flow_blocked)
+ brcmf_fws_schedule_deq(fws);
+ else
+ fws->stats.bus_flow_block++;
+ }
}
Patches currently in stable-queue which might be from arend.vanspriel@xxxxxxxxxxxx are
queue-4.7/brcmfmac-restore-stopping-netdev-queue-when-bus-clogs-up.patch
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