net: brcmfmac: Convey execution context via argument to brcmf_netif_rx()

bcrmgf_netif_rx() uses in_interrupt to chose between netif_rx() and
netif_rx_ni(). in_interrupt() usage in drivers is phased out.

Convey the execution mode via an 'inirq' argument through the various
callchains leading to brcmf_netif_rx():

brcmf_pcie_isr_thread()		    <- Task context
  brcmf_proto_msgbuf_rx_trigger()
    brcmf_msgbuf_process_rx()
      brcmf_msgbuf_process_msgtype()
        brcmf_msgbuf_process_rx_complete()
	  brcmf_netif_mon_rx()
	     brcmf_netif_rx(isirq = false)
	  brcmf_netif_rx(isirq = false)

brcmf_sdio_readframes()  <- Task context sdio_claim_host() might sleep
  brcmf_rx_frame(isirq = false)

brcmf_sdio_rxglom()      <- Task context sdio_claim_host() might sleep
  brcmf_rx_frame(isirq = false)

brcmf_usb_rx_complete()  <- Interrupt context
  brcmf_rx_frame(isirq = true)

brcmf_rx_frame()
  brcmf_proto_rxreorder()
    brcmf_proto_bcdc_rxreorder()
      brcmf_fws_rxreorder()
        brcmf_netif_rx()
      brcmf_netif_rx()

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Arend van Spriel <arend.vanspriel@broadcom.com>
Cc: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcdc.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcdc.c
index 2c95a08..3984fd7 100644 (file)
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcdc.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcdc.c
@@ -397,9 +397,9 @@ brcmf_proto_bcdc_add_tdls_peer(struct brcmf_pub *drvr, int ifidx,
 }
 
 static void brcmf_proto_bcdc_rxreorder(struct brcmf_if *ifp,
-                                      struct sk_buff *skb)
+                                      struct sk_buff *skb, bool inirq)
 {
-       brcmf_fws_rxreorder(ifp, skb);
+       brcmf_fws_rxreorder(ifp, skb, inirq);
 }
 
 static void

diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bus.h b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bus.h
index 623c016..08f9d47 100644 (file)
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bus.h
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bus.h
@@ -249,7 +249,8 @@ int brcmf_bus_reset(struct brcmf_bus *bus)
  */
 
 /* Receive frame for delivery to OS.  Callee disposes of rxp. */
-void brcmf_rx_frame(struct device *dev, struct sk_buff *rxp, bool handle_event);
+void brcmf_rx_frame(struct device *dev, struct sk_buff *rxp, bool handle_event,
+                   bool inirq);
 /* Receive async event packet from firmware. Callee disposes of rxp. */
 void brcmf_rx_event(struct device *dev, struct sk_buff *rxp);
 

diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c
index aa9ced3..4b027a2 100644 (file)
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c
@@ -395,7 +395,7 @@ void brcmf_txflowblock_if(struct brcmf_if *ifp,
        spin_unlock_irqrestore(&ifp->netif_stop_lock, flags);
 }
 
-void brcmf_netif_rx(struct brcmf_if *ifp, struct sk_buff *skb)
+void brcmf_netif_rx(struct brcmf_if *ifp, struct sk_buff *skb, bool inirq)
 {
        /* Most of Broadcom's firmwares send 802.11f ADD frame every time a new
         * STA connects to the AP interface. This is an obsoleted standard most
@@ -418,14 +418,15 @@ void brcmf_netif_rx(struct brcmf_if *ifp, struct sk_buff *skb)
        ifp->ndev->stats.rx_packets++;
 
        brcmf_dbg(DATA, "rx proto=0x%X\n", ntohs(skb->protocol));
-       if (in_interrupt())
+       if (inirq) {
                netif_rx(skb);
-       else
+       } else {
                /* If the receive is not processed inside an ISR,
                 * the softirqd must be woken explicitly to service
                 * the NET_RX_SOFTIRQ.  This is handled by netif_rx_ni().
                 */
                netif_rx_ni(skb);
+       }
 }
 
 void brcmf_netif_mon_rx(struct brcmf_if *ifp, struct sk_buff *skb)
@@ -474,7 +475,7 @@ void brcmf_netif_mon_rx(struct brcmf_if *ifp, struct sk_buff *skb)
        skb->pkt_type = PACKET_OTHERHOST;
        skb->protocol = htons(ETH_P_802_2);
 
-       brcmf_netif_rx(ifp, skb);
+       brcmf_netif_rx(ifp, skb, false);
 }
 
 static int brcmf_rx_hdrpull(struct brcmf_pub *drvr, struct sk_buff *skb,
@@ -496,7 +497,8 @@ static int brcmf_rx_hdrpull(struct brcmf_pub *drvr, struct sk_buff *skb,
        return 0;
 }
 
-void brcmf_rx_frame(struct device *dev, struct sk_buff *skb, bool handle_event)
+void brcmf_rx_frame(struct device *dev, struct sk_buff *skb, bool handle_event,
+                   bool inirq)
 {
        struct brcmf_if *ifp;
        struct brcmf_bus *bus_if = dev_get_drvdata(dev);
@@ -508,14 +510,14 @@ void brcmf_rx_frame(struct device *dev, struct sk_buff *skb, bool handle_event)
                return;
 
        if (brcmf_proto_is_reorder_skb(skb)) {
-               brcmf_proto_rxreorder(ifp, skb);
+               brcmf_proto_rxreorder(ifp, skb, inirq);
        } else {
                /* Process special event packets */
                if (handle_event)
                        brcmf_fweh_process_skb(ifp->drvr, skb,
                                               BCMILCP_SUBTYPE_VENDOR_LONG);
 
-               brcmf_netif_rx(ifp, skb);
+               brcmf_netif_rx(ifp, skb, inirq);
        }
 }
 

diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.h b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.h
index 33b2ab3..5767d66 100644 (file)
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.h
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.h
@@ -208,7 +208,7 @@ void brcmf_remove_interface(struct brcmf_if *ifp, bool rtnl_locked);
 void brcmf_txflowblock_if(struct brcmf_if *ifp,
                          enum brcmf_netif_stop_reason reason, bool state);
 void brcmf_txfinalize(struct brcmf_if *ifp, struct sk_buff *txp, bool success);
-void brcmf_netif_rx(struct brcmf_if *ifp, struct sk_buff *skb);
+void brcmf_netif_rx(struct brcmf_if *ifp, struct sk_buff *skb, bool inirq);
 void brcmf_netif_mon_rx(struct brcmf_if *ifp, struct sk_buff *skb);
 void brcmf_net_detach(struct net_device *ndev, bool rtnl_locked);
 int brcmf_net_mon_attach(struct brcmf_if *ifp);

diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwsignal.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwsignal.c
index 775e061..437e83e 100644 (file)
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwsignal.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwsignal.c
@@ -1664,7 +1664,7 @@ static void brcmf_rxreorder_get_skb_list(struct brcmf_ampdu_rx_reorder *rfi,
        rfi->pend_pkts -= skb_queue_len(skb_list);
 }
 
-void brcmf_fws_rxreorder(struct brcmf_if *ifp, struct sk_buff *pkt)
+void brcmf_fws_rxreorder(struct brcmf_if *ifp, struct sk_buff *pkt, bool inirq)
 {
        struct brcmf_pub *drvr = ifp->drvr;
        u8 *reorder_data;
@@ -1682,7 +1682,7 @@ void brcmf_fws_rxreorder(struct brcmf_if *ifp, struct sk_buff *pkt)
        /* validate flags and flow id */
        if (flags == 0xFF) {
                bphy_err(drvr, "invalid flags...so ignore this packet\n");
-               brcmf_netif_rx(ifp, pkt);
+               brcmf_netif_rx(ifp, pkt, inirq);
                return;
        }
 
@@ -1694,7 +1694,7 @@ void brcmf_fws_rxreorder(struct brcmf_if *ifp, struct sk_buff *pkt)
                if (rfi == NULL) {
                        brcmf_dbg(INFO, "received flags to cleanup, but no flow (%d) yet\n",
                                  flow_id);
-                       brcmf_netif_rx(ifp, pkt);
+                       brcmf_netif_rx(ifp, pkt, inirq);
                        return;
                }
 
@@ -1719,7 +1719,7 @@ void brcmf_fws_rxreorder(struct brcmf_if *ifp, struct sk_buff *pkt)
                rfi = kzalloc(buf_size, GFP_ATOMIC);
                if (rfi == NULL) {
                        bphy_err(drvr, "failed to alloc buffer\n");
-                       brcmf_netif_rx(ifp, pkt);
+                       brcmf_netif_rx(ifp, pkt, inirq);
                        return;
                }
 
@@ -1833,7 +1833,7 @@ void brcmf_fws_rxreorder(struct brcmf_if *ifp, struct sk_buff *pkt)
 netif_rx:
        skb_queue_walk_safe(&reorder_list, pkt, pnext) {
                __skb_unlink(pkt, &reorder_list);
-               brcmf_netif_rx(ifp, pkt);
+               brcmf_netif_rx(ifp, pkt, inirq);
        }
 }
 

diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwsignal.h b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwsignal.h
index b16a9d1..50e424b 100644 (file)
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwsignal.h
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwsignal.h
@@ -42,6 +42,6 @@ void brcmf_fws_add_interface(struct brcmf_if *ifp);
 void brcmf_fws_del_interface(struct brcmf_if *ifp);
 void brcmf_fws_bustxfail(struct brcmf_fws_info *fws, struct sk_buff *skb);
 void brcmf_fws_bus_blocked(struct brcmf_pub *drvr, bool flow_blocked);
-void brcmf_fws_rxreorder(struct brcmf_if *ifp, struct sk_buff *skb);
+void brcmf_fws_rxreorder(struct brcmf_if *ifp, struct sk_buff *skb, bool inirq);
 
 #endif /* FWSIGNAL_H_ */

diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/msgbuf.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/msgbuf.c
index bfddb85..69f04bb 100644 (file)
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/msgbuf.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/msgbuf.c
@@ -536,7 +536,8 @@ static int brcmf_msgbuf_hdrpull(struct brcmf_pub *drvr, bool do_fws,
        return -ENODEV;
 }
 
-static void brcmf_msgbuf_rxreorder(struct brcmf_if *ifp, struct sk_buff *skb)
+static void brcmf_msgbuf_rxreorder(struct brcmf_if *ifp, struct sk_buff *skb,
+                                  bool inirq)
 {
 }
 
@@ -1190,7 +1191,7 @@ brcmf_msgbuf_process_rx_complete(struct brcmf_msgbuf *msgbuf, void *buf)
        }
 
        skb->protocol = eth_type_trans(skb, ifp->ndev);
-       brcmf_netif_rx(ifp, skb);
+       brcmf_netif_rx(ifp, skb, false);
 }
 
 static void brcmf_msgbuf_process_gen_status(struct brcmf_msgbuf *msgbuf,

diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/proto.h b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/proto.h
index bd08d3a..f4a79e2 100644 (file)
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/proto.h
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/proto.h
@@ -32,7 +32,7 @@ struct brcmf_proto {
                            u8 peer[ETH_ALEN]);
        void (*add_tdls_peer)(struct brcmf_pub *drvr, int ifidx,
                              u8 peer[ETH_ALEN]);
-       void (*rxreorder)(struct brcmf_if *ifp, struct sk_buff *skb);
+       void (*rxreorder)(struct brcmf_if *ifp, struct sk_buff *skb, bool inirq);
        void (*add_if)(struct brcmf_if *ifp);
        void (*del_if)(struct brcmf_if *ifp);
        void (*reset_if)(struct brcmf_if *ifp);
@@ -109,9 +109,9 @@ static inline bool brcmf_proto_is_reorder_skb(struct sk_buff *skb)
 }
 
 static inline void
-brcmf_proto_rxreorder(struct brcmf_if *ifp, struct sk_buff *skb)
+brcmf_proto_rxreorder(struct brcmf_if *ifp, struct sk_buff *skb, bool inirq)
 {
-       ifp->drvr->proto->rxreorder(ifp, skb);
+       ifp->drvr->proto->rxreorder(ifp, skb, inirq);
 }
 
 static inline void

diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
index 183e7f3..99987a7 100644 (file)
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
@@ -1704,7 +1704,7 @@ static u8 brcmf_sdio_rxglom(struct brcmf_sdio *bus, u8 rxseq)
                                brcmf_rx_event(bus->sdiodev->dev, pfirst);
                        else
                                brcmf_rx_frame(bus->sdiodev->dev, pfirst,
-                                              false);
+                                              false, false);
                        bus->sdcnt.rxglompkts++;
                }
 
@@ -2038,7 +2038,7 @@ static uint brcmf_sdio_readframes(struct brcmf_sdio *bus, uint maxframes)
                        brcmf_rx_event(bus->sdiodev->dev, pkt);
                else
                        brcmf_rx_frame(bus->sdiodev->dev, pkt,
-                                      false);
+                                      false, false);
 
                /* prepare the descriptor for the next read */
                rd->len = rd->len_nxtfrm << 4;

diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/usb.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/usb.c
index 6f67fef..586f4df 100644 (file)
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/usb.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/usb.c
@@ -532,7 +532,7 @@ static void brcmf_usb_rx_complete(struct urb *urb)
        if (devinfo->bus_pub.state == BRCMFMAC_USB_STATE_UP ||
            devinfo->bus_pub.state == BRCMFMAC_USB_STATE_SLEEP) {
                skb_put(skb, urb->actual_length);
-               brcmf_rx_frame(devinfo->dev, skb, true);
+               brcmf_rx_frame(devinfo->dev, skb, true, true);
                brcmf_usb_rx_refill(devinfo, req);
                usb_mark_last_busy(urb->dev);
        } else {