wifi: brcmfmac: Fix for when connect request is not success

Currently brcmfmac is expecting to be set for both
BRCMF_VIF_STATUS_EAP_SUCCESS and BRCMF_VIF_STATUS_EAP status bit based
on dongle event and those bits are cleared to complete connect request
successfully.

But when connect request is finished unsuccessfully, either
BRCMF_VIF_STATUS_EAP_SUCCESS / BRCMF_VIF_STATUS_EAP bits are not
cleared depending on how the connect fail event happens. These status
bits are carried over to following new connect request and this will lead
to generate below kernel warning for some case. Worst case status
mismatch happens between dongle and wpa_supplicant.

WARNING: ../net/wireless/sme.c:756 __cfg80211_connect_result+0x42c/0x4a0 [cfg80211]

The fix is to clear the BRCMF_VIF_STATUS_EAP_SUCCESS /
BRCMF_VIF_STATUS_EAP bits during the link down process and add to call
link down process when link down event received during
BRCMF_VIF_STATUS_CONNECTING as well as BRCMF_VIF_STATUS_CONNECTED
state.

Signed-off-by: Wataru Gohda <wataru.gohda@cypress.com>
Signed-off-by: Chi-hsien Lin <chi-hsien.lin@infineon.com>
Signed-off-by: Ian Lin <ian.lin@infineon.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20221024085215.27616-3-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 3f2336062217cd890baf1b249b9a1e17c447f341..14cbc30a322989798c6abd5e7e683c9633591e2d 100644 (file)
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
@@ -1683,6 +1683,8 @@ static void brcmf_link_down(struct brcmf_cfg80211_vif *vif, u16 reason,
                                              locally_generated, GFP_KERNEL);
        }
        clear_bit(BRCMF_VIF_STATUS_CONNECTING, &vif->sme_state);
+       clear_bit(BRCMF_VIF_STATUS_EAP_SUCCESS, &vif->sme_state);
+       clear_bit(BRCMF_VIF_STATUS_ASSOC_SUCCESS, &vif->sme_state);
        clear_bit(BRCMF_SCAN_STATUS_SUPPRESS, &cfg->scan_status);
        brcmf_btcoex_set_mode(vif, BRCMF_BTCOEX_ENABLED, 0);
        if (vif->profile.use_fwsup != BRCMF_PROFILE_FWSUP_NONE) {
@@ -2535,6 +2537,8 @@ brcmf_cfg80211_disconnect(struct wiphy *wiphy, struct net_device *ndev,
 
        clear_bit(BRCMF_VIF_STATUS_CONNECTED, &ifp->vif->sme_state);
        clear_bit(BRCMF_VIF_STATUS_CONNECTING, &ifp->vif->sme_state);
+       clear_bit(BRCMF_VIF_STATUS_EAP_SUCCESS, &ifp->vif->sme_state);
+       clear_bit(BRCMF_VIF_STATUS_ASSOC_SUCCESS, &ifp->vif->sme_state);
        cfg80211_disconnected(ndev, reason_code, NULL, 0, true, GFP_KERNEL);
 
        memcpy(&scbval.ea, &profile->bssid, ETH_ALEN);
@@ -6299,6 +6303,10 @@ brcmf_bss_connect_done(struct brcmf_cfg80211_info *cfg,
                                &ifp->vif->sme_state);
                        conn_params.status = WLAN_STATUS_SUCCESS;
                } else {
+                       clear_bit(BRCMF_VIF_STATUS_EAP_SUCCESS,
+                                 &ifp->vif->sme_state);
+                       clear_bit(BRCMF_VIF_STATUS_ASSOC_SUCCESS,
+                                 &ifp->vif->sme_state);
                        conn_params.status = WLAN_STATUS_AUTH_TIMEOUT;
                }
                conn_params.links[0].bssid = profile->bssid;
@@ -6396,9 +6404,13 @@ brcmf_notify_connect_status(struct brcmf_if *ifp,
        } else if (brcmf_is_linkdown(ifp->vif, e)) {
                brcmf_dbg(CONN, "Linkdown\n");
                if (!brcmf_is_ibssmode(ifp->vif) &&
-                   test_bit(BRCMF_VIF_STATUS_CONNECTED,
-                            &ifp->vif->sme_state)) {
-                       if (memcmp(profile->bssid, e->addr, ETH_ALEN))
+                   (test_bit(BRCMF_VIF_STATUS_CONNECTED,
+                             &ifp->vif->sme_state) ||
+                    test_bit(BRCMF_VIF_STATUS_CONNECTING,
+                             &ifp->vif->sme_state))) {
+                       if (test_bit(BRCMF_VIF_STATUS_CONNECTED,
+                                    &ifp->vif->sme_state) &&
+                           memcmp(profile->bssid, e->addr, ETH_ALEN))
                                return err;
 
                        brcmf_bss_connect_done(cfg, ndev, e, false);