On 11/25/2010 11:52 AM, Juuso Oikarinen wrote:
On Wed, 2010-11-24 at 18:33 +0200, ext Shahar Levi wrote:
Add new ampdu_action ops to support receiver BA.
The BA initiator session management in FW independently.
Signed-off-by: Shahar Levi<shahar_levi@xxxxxx>
---
+int wl1271_op_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
+ enum ieee80211_ampdu_mlme_action action,
+ struct ieee80211_sta *sta, u16 tid, u16 *ssn)
+{
+ struct wl1271 *wl = hw->priv;
+ int ret;
+
+ ret = wl1271_ps_elp_wakeup(wl, false);
+ if (ret< 0)
+ goto out;
+
+ switch (action) {
+ case IEEE80211_AMPDU_RX_START:
+ if (wl->ba_allowed) {
+ ret = wl1271_acx_set_ba_receiver_session(wl, tid, ssn,
+ true);
+ if (!ret)
+ wl->ba_rx_bitmap |= (u8)(BIT(0)<< tid);
+ } else
+ ret = -EPERM;
+ break;
+
+ case IEEE80211_AMPDU_RX_STOP:
+ ret = wl1271_acx_set_ba_receiver_session(wl, tid, ssn, false);
+ if (!ret)
+ wl->ba_rx_bitmap&= ~(u8)(BIT(0)<< tid);
+ break;
+
+ /*
+ * The BA initiator session management in FW independently.
+ * Falling break here on purpose for all TX APDU commands.
+ */
+ case IEEE80211_AMPDU_TX_START:
+ case IEEE80211_AMPDU_TX_STOP:
+ case IEEE80211_AMPDU_TX_OPERATIONAL:
+ ret = -EINVAL;
+ break;
+
+ default:
+ wl1271_error("Incorrect ampdu action id=%x\n", action);
+ ret = -ENODEV;
+ }
+
+ wl1271_ps_elp_sleep(wl);
+
+out:
+ return ret;
+}
+
Seems to me that locking of the wl1271 mutex is missing here.
You right. will be fix on v2
Also, I think it would be good to add checking for interface status
(wl->state == WL1271_STATE_OFF) here too. In normal cases this would not
be needed, but there are at least some hardware recovery scenarios where
this could be called while the firmware is off, causing all types of odd
behavior.
it seems that it is good protraction. the setting of WL1271_STATE_OFF is
in wl1271_alloc_hw() and __wl1271_op_remove_interface(). i was expect
that in static void wl1271_recovery_work() after validate (wl->state !=
WL1271_STATE_ON) we will set it to WL1271_STATE_OFF.
-Juuso
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