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35 lines
1.5 KiB
Diff
35 lines
1.5 KiB
Diff
From 8e290cecdd0178f3d4cf7d463c51dc7e462843b4 Mon Sep 17 00:00:00 2001
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From: Gavin Li <git@thegavinli.com>
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Date: Tue, 17 Jan 2017 15:24:05 -0800
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Subject: [PATCH] brcmfmac: fix incorrect event channel deduction
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brcmf_sdio_fromevntchan() was being called on the the data frame
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rather than the software header, causing some frames to be
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mischaracterized as on the event channel rather than the data channel.
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This fixes a major performance regression (due to dropped packets). With
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this patch the download speed jumped from 1Mbit/s back up to 40MBit/s due
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to the sheer amount of packets being incorrectly processed.
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Fixes: c56caa9db8ab ("brcmfmac: screening firmware event packet")
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Signed-off-by: Gavin Li <git@thegavinli.com>
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Cc: <stable@vger.kernel.org> # 4.7+
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Acked-by: Arend van Spriel <arend.vanspriel@broadcom.com>
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[kvalo@codeaurora.org: improve commit logs based on email discussion]
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Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
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---
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drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
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+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
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@@ -1661,7 +1661,7 @@ static u8 brcmf_sdio_rxglom(struct brcmf
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pfirst->len, pfirst->next,
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pfirst->prev);
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skb_unlink(pfirst, &bus->glom);
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- if (brcmf_sdio_fromevntchan(pfirst->data))
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+ if (brcmf_sdio_fromevntchan(&dptr[SDPCM_HWHDR_LEN]))
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brcmf_rx_event(bus->sdiodev->dev, pfirst);
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else
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brcmf_rx_frame(bus->sdiodev->dev, pfirst,
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