From: Ramesh Rangavittal Date: Thu, 29 Sep 2022 01:25:27 +0000 (-0500) Subject: brcmfmac: Fix authentication latency caused by OBSS stats survey X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=62ccb2e6f208ea754f62883be5a775f00bd559ab;p=linux.git brcmfmac: Fix authentication latency caused by OBSS stats survey Auto Channel Select feature of HostAP uses dump_survey to fetch OBSS statistics. When the device is in the middle of an authentication sequence or just at the end of authentication completion, running dump_survey would trigger a channel change. The channel change in-turn can cause packet loss, resulting in authentication delay. With this change, dump_survey won't be run when authentication or association is in progress, hence resolving the issue. Signed-off-by: Ramesh Rangavittal Signed-off-by: Chung-Hsien Hsu Signed-off-by: Chi-hsien Lin Signed-off-by: Ian Lin Signed-off-by: Kalle Valo Link: https://lore.kernel.org/r/20220929012527.4152-5-ian.lin@infineon.com --- diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c index c13c4c559e6e3..362d8fd0af4e3 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c @@ -7697,6 +7697,12 @@ brcmf_cfg80211_dump_survey(struct wiphy *wiphy, struct net_device *ndev, brcmf_dbg(TRACE, "Enter: channel idx=%d\n", idx); + /* Do not run survey when VIF in CONNECTING / CONNECTED states */ + if ((test_bit(BRCMF_VIF_STATUS_CONNECTING, &ifp->vif->sme_state)) || + (test_bit(BRCMF_VIF_STATUS_CONNECTED, &ifp->vif->sme_state))) { + return -EBUSY; + } + band = wiphy->bands[NL80211_BAND_2GHZ]; if (band && idx >= band->n_channels) { idx -= band->n_channels;