From: Luca Pesce luca.pesce@vimar.com
[ Upstream commit e862a3e4088070de352fdafe9bd9e3ae0a95a33c ]
This ensure that previous association attempts do not leave stale statuses on subsequent attempts.
This fixes the WARN_ON(!cr->bss)) from __cfg80211_connect_result() when connecting to an AP after a previous connection failure (e.g. where EAP fails due to incorrect psk but association succeeded). In some scenarios, indeed, brcmf_is_linkup() was reporting a link up event too early due to stale BRCMF_VIF_STATUS_ASSOC_SUCCESS bit, thus reporting to cfg80211 a connection result with a zeroed bssid (vif->profile.bssid is still empty), causing the WARN_ON due to the call to cfg80211_get_bss() with the empty bssid.
Signed-off-by: Luca Pesce luca.pesce@vimar.com Signed-off-by: Kalle Valo kvalo@codeaurora.org Link: https://lore.kernel.org/r/1608807119-21785-1-git-send-email-luca.pesce@vimar... Signed-off-by: Sasha Levin sashal@kernel.org --- .../net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c index bbdc6000afb9..96dc9e5ab23f 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c @@ -5282,7 +5282,8 @@ static bool brcmf_is_linkup(struct brcmf_cfg80211_vif *vif, return false; }
-static bool brcmf_is_linkdown(const struct brcmf_event_msg *e) +static bool brcmf_is_linkdown(struct brcmf_cfg80211_vif *vif, + const struct brcmf_event_msg *e) { u32 event = e->event_code; u16 flags = e->flags; @@ -5291,6 +5292,8 @@ static bool brcmf_is_linkdown(const struct brcmf_event_msg *e) (event == BRCMF_E_DISASSOC_IND) || ((event == BRCMF_E_LINK) && (!(flags & BRCMF_EVENT_MSG_LINK)))) { brcmf_dbg(CONN, "Processing link down\n"); + clear_bit(BRCMF_VIF_STATUS_EAP_SUCCESS, &vif->sme_state); + clear_bit(BRCMF_VIF_STATUS_ASSOC_SUCCESS, &vif->sme_state); return true; } return false; @@ -5581,7 +5584,7 @@ brcmf_notify_connect_status(struct brcmf_if *ifp, } else brcmf_bss_connect_done(cfg, ndev, e, true); brcmf_net_setcarrier(ifp, true); - } else if (brcmf_is_linkdown(e)) { + } else if (brcmf_is_linkdown(ifp->vif, e)) { brcmf_dbg(CONN, "Linkdown\n"); if (!brcmf_is_ibssmode(ifp->vif)) { brcmf_bss_connect_done(cfg, ndev, e, false);