[PATCH 3.18 039/150] brcmfmac: Fix ifidx for rx data by msgbuf.

Greg Kroah-Hartman
2015-01-14T07:25:58Z

From: Hante Meuleman <meuleman@broadcom.com>

commit 94a612086f5e78272e831c04b673778f8546ea73 upstream.

The ifidx provided by FW needs to be offsetted when receiving data
packets.

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
drivers/net/wireless/brcm80211/brcmfmac/msgbuf.c | 9 +++++++++
1 file changed, 9 insertions(+)

--- a/drivers/net/wireless/brcm80211/brcmfmac/msgbuf.c
+++ b/drivers/net/wireless/brcm80211/brcmfmac/msgbuf.c
@@ -1081,8 +1081,17 @@ brcmf_msgbuf_rx_skb(struct brcmf_msgbuf
{
struct brcmf_if *ifp;

+ /* The ifidx is the idx to map to matching netdev/ifp. When receiving
+ * events this is easy because it contains the bssidx which maps
+ * 1-on-1 to the netdev/ifp. But for data frames the ifidx is rcvd.
+ * bssidx 1 is used for p2p0 and no data can be received or
+ * transmitted on it. Therefor bssidx is ifidx + 1 if ifidx > 0
+ */
+ if (ifidx)
+ (ifidx)++;
ifp = msgbuf->drvr->iflist[ifidx];
if (!ifp || !ifp->ndev) {
+ brcmf_err("Received pkt for invalid ifidx %d\n", ifidx);
brcmu_pkt_buf_free_skb(skb);
return;
}