ath9k: remove support for the FIF_PROMISC_IN_BSS filter flag
The hardware rx filter flag triggered by FIF_PROMISC_IN_BSS is overly broad and covers even frames with PHY errors. When this flag is enabled, this message shows up frequently during scanning or hardware resets: ath: Could not stop RX, we could be confusing the DMA engine when we start RX up Since promiscuous mode is usually not particularly useful, yet enabled by default by bridging (either used normally in 4-addr mode, or with hacks for various virtualization software), we should sacrifice it for better reliability during normal operation. This patch leaves it enabled if there are active monitor mode interfaces, since it's very useful for debugging. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Cc: stable@kernel.org Signed-off-by: John W. Linville <linville@tuxdriver.com>
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1 changed files with 1 additions and 3 deletions
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@ -413,9 +413,7 @@ u32 ath_calcrxfilter(struct ath_softc *sc)
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* mode interface or when in monitor mode. AP mode does not need this
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* since it receives all in-BSS frames anyway.
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*/
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if (((sc->sc_ah->opmode != NL80211_IFTYPE_AP) &&
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(sc->rx.rxfilter & FIF_PROMISC_IN_BSS)) ||
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(sc->sc_ah->is_monitoring))
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if (sc->sc_ah->is_monitoring)
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rfilt |= ATH9K_RX_FILTER_PROM;
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if (sc->rx.rxfilter & FIF_CONTROL)
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