brcmfmac: Stop all net if queues on tx flow halt.

When tx flow is to be blocked due to host interface throttle then
all net if queues should be stopped.

Reviewed-by: Franky (Zhenhui) Lin <frankyl@broadcom.com>
Reviewed-by: Arend Van Spriel <arend@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Signed-off-by: Hante Meuleman <meuleman@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/brcm80211/brcmfmac/dhd_bus.h

@@ -103,7 +103,7 @@ extern int brcmf_attach(uint bus_hdrlen, struct device *dev);
 extern void brcmf_detach(struct device *dev);
 
 /* Indication from bus module to change flow-control state */
-extern void brcmf_txflowcontrol(struct device *dev, int ifidx, bool on);
+extern void brcmf_txflowblock(struct device *dev, bool state);
 
 /* Notify tx completion */
 extern void brcmf_txcomplete(struct device *dev, struct sk_buff *txp,

drivers/net/wireless/brcm80211/brcmfmac/dhd_linux.c

@@ -350,19 +350,23 @@ static int brcmf_netdev_start_xmit(struct sk_buff *skb, struct net_device *ndev)
 	return 0;
 }
 
-void brcmf_txflowcontrol(struct device *dev, int ifidx, bool state)
+void brcmf_txflowblock(struct device *dev, bool state)
 {
 	struct net_device *ndev;
 	struct brcmf_bus *bus_if = dev_get_drvdata(dev);
 	struct brcmf_pub *drvr = bus_if->drvr;
+	int i;
 
 	brcmf_dbg(TRACE, "Enter\n");
 
-	ndev = drvr->iflist[ifidx]->ndev;
-	if (state == ON)
-		netif_stop_queue(ndev);
-	else
-		netif_wake_queue(ndev);
+	for (i = 0; i < BRCMF_MAX_IFS; i++)
+		if (drvr->iflist[i]) {
+			ndev = drvr->iflist[i]->ndev;
+			if (state)
+				netif_stop_queue(ndev);
+			else
+				netif_wake_queue(ndev);
+		}
 }
 
 static int brcmf_host_event(struct brcmf_pub *drvr, int *ifidx,

drivers/net/wireless/brcm80211/brcmfmac/dhd_sdio.c

@@ -2235,8 +2235,8 @@ static uint brcmf_sdbrcm_sendfromq(struct brcmf_sdio *bus, uint maxframes)
 	if (bus->sdiodev->bus_if->drvr_up &&
 	    (bus->sdiodev->bus_if->state == BRCMF_BUS_DATA) &&
 	    bus->txoff && (pktq_len(&bus->txq) < TXLOW)) {
-		bus->txoff = OFF;
-		brcmf_txflowcontrol(bus->sdiodev->dev, 0, OFF);
+		bus->txoff = false;
+		brcmf_txflowblock(bus->sdiodev->dev, false);
 	}
 
 	return cnt;
@@ -2672,8 +2672,8 @@ static int brcmf_sdbrcm_bus_txdata(struct device *dev, struct sk_buff *pkt)
 	spin_unlock_bh(&bus->txqlock);
 
 	if (pktq_len(&bus->txq) >= TXHI) {
-		bus->txoff = ON;
-		brcmf_txflowcontrol(bus->sdiodev->dev, 0, ON);
+		bus->txoff = true;
+		brcmf_txflowblock(bus->sdiodev->dev, true);
 	}
 
 #ifdef DEBUG