[PATCH 06/10] wil6210: store bss object and use cfg80211_connect_bss()
flat view
STALE3512d
SUPERSEDED
From: Maya Erez <hidden>
Date: 2017-02-21 14:32:25
Subsystem:
atheros ath generic utilities, the rest, wilocity wil6210 wireless driver · Maintainers:
Jeff Johnson, Linus Torvalds
Revision v1 of 20 in this series.
Revisions (20)
From: Dedy Lansky <redacted> In a fast disconnect/connect sequence, cfg80211_connect_result() can fail to find the bss object which the driver is connecting to. Detailed sequence of events: * Driver is connected in STA mode * Disconnect request arrives from user space. Driver disconnects and calls cfg80211_disconnected() which adds new event to the cfg80211_wq worker thread * Connect request arrives from user space. cfg80211_connect() stores ssid/ssid_len and calls rdev_connect() * __cfg80211_disconnected() runs in worker thread and zero wdev->ssid_len * Connect succeeds. Driver calls cfg80211_connect_result() which fails to find the bss because wdev->ssid_len is zero To overcome this, upon connect request, store the bss object in the driver and upon connect completion pass it to kernel using cfg80211_connect_bss(). Signed-off-by: Dedy Lansky <redacted> Signed-off-by: Maya Erez <redacted> --- drivers/net/wireless/ath/wil6210/cfg80211.c | 1 + drivers/net/wireless/ath/wil6210/main.c | 1 + drivers/net/wireless/ath/wil6210/wil6210.h | 1 + drivers/net/wireless/ath/wil6210/wmi.c | 14 +++++++++----- 4 files changed, 12 insertions(+), 5 deletions(-)
diff --git a/drivers/net/wireless/ath/wil6210/cfg80211.c b/drivers/net/wireless/ath/wil6210/cfg80211.c
index 581a4e2..39ee565 100644
--- a/drivers/net/wireless/ath/wil6210/cfg80211.c
+++ b/drivers/net/wireless/ath/wil6210/cfg80211.c@@ -681,6 +681,7 @@ static int wil_cfg80211_connect(struct wiphy *wiphy, if (rc == 0) { netif_carrier_on(ndev); wil6210_bus_request(wil, WIL_MAX_BUS_REQUEST_KBPS); + wil->bss = bss; /* Connect can take lots of time */ mod_timer(&wil->connect_timer, jiffies + msecs_to_jiffies(2000));
diff --git a/drivers/net/wireless/ath/wil6210/main.c b/drivers/net/wireless/ath/wil6210/main.c
index dddde94..5d45fac 100644
--- a/drivers/net/wireless/ath/wil6210/main.c
+++ b/drivers/net/wireless/ath/wil6210/main.c@@ -284,6 +284,7 @@ static void _wil6210_disconnect(struct wil6210_priv *wil, const u8 *bssid, cfg80211_connect_result(ndev, bssid, NULL, 0, NULL, 0, WLAN_STATUS_UNSPECIFIED_FAILURE, GFP_KERNEL); + wil->bss = NULL; } clear_bit(wil_status_fwconnecting, wil->status); break;
diff --git a/drivers/net/wireless/ath/wil6210/wil6210.h b/drivers/net/wireless/ath/wil6210/wil6210.h
index 89e7eb7..09e2fce 100644
--- a/drivers/net/wireless/ath/wil6210/wil6210.h
+++ b/drivers/net/wireless/ath/wil6210/wil6210.h@@ -613,6 +613,7 @@ struct wil6210_priv { u16 channel; /* relevant in AP mode */ int sinfo_gen; u32 ap_isolate; /* no intra-BSS communication */ + struct cfg80211_bss *bss; /* connected bss, relevant in STA mode */ /* interrupt moderation */ u32 tx_max_burst_duration; u32 tx_interframe_timeout;
diff --git a/drivers/net/wireless/ath/wil6210/wmi.c b/drivers/net/wireless/ath/wil6210/wmi.c
index a7a4ac1..a2a895b 100644
--- a/drivers/net/wireless/ath/wil6210/wmi.c
+++ b/drivers/net/wireless/ath/wil6210/wmi.c@@ -573,12 +573,16 @@ static void wmi_evt_connect(struct wil6210_priv *wil, int id, void *d, int len) GFP_KERNEL); goto out; } else { - cfg80211_connect_result(ndev, evt->bssid, - assoc_req_ie, assoc_req_ielen, - assoc_resp_ie, assoc_resp_ielen, - WLAN_STATUS_SUCCESS, - GFP_KERNEL); + struct wiphy *wiphy = wil_to_wiphy(wil); + + cfg80211_ref_bss(wiphy, wil->bss); + cfg80211_connect_bss(ndev, evt->bssid, wil->bss, + assoc_req_ie, assoc_req_ielen, + assoc_resp_ie, assoc_resp_ielen, + WLAN_STATUS_SUCCESS, GFP_KERNEL, + NL80211_TIMEOUT_UNSPECIFIED); } + wil->bss = NULL; } else if ((wdev->iftype == NL80211_IFTYPE_AP) || (wdev->iftype == NL80211_IFTYPE_P2P_GO)) { if (rc) {
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1.9.1