nl80211: Debug print TX queue parameter values and result

Some mac80211_hwsim test cases have failed with mysterious sequence
where mac80211 has claimed the parameters are invalid ("wlan3: invalid
CW_min/CW_max: 9484/40"). Those values look strange since they are not
from hostapd configuration or default values.. hostapd is seeing TX
queue parameter set failing for queues 0, 1, and 3 (but not 2) for these
cases. Add debug prints to hostapd to get more details on what exactly
is happening if such error cases can be reproduced.

Signed-off-by: Jouni Malinen <j@w1.fi>

diff --git a/src/drivers/driver_nl80211.c b/src/drivers/driver_nl80211.c
index c808b64aa88f5a09de5c1330d609f95d0bf917e4..871a5d0b4a205b4b9d09db52faeec07d0579194d 100644 (file)
--- a/src/drivers/driver_nl80211.c
+++ b/src/drivers/driver_nl80211.c
@@ -6297,6 +6297,7 @@ static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
        struct wpa_driver_nl80211_data *drv = bss->drv;
        struct nl_msg *msg;
        struct nlattr *txq, *params;
+       int res;
 
        msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_WIPHY);
        if (!msg)
@@ -6342,7 +6343,11 @@ static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
 
        nla_nest_end(msg, txq);
 
-       if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
+       res = send_and_recv_msgs(drv, msg, NULL, NULL);
+       wpa_printf(MSG_DEBUG,
+                  "nl80211: TX queue param set: queue=%d aifs=%d cw_min=%d cw_max=%d burst_time=%d --> res=%d",
+                  queue, aifs, cw_min, cw_max, burst_time, res);
+       if (res == 0)
                return 0;
        msg = NULL;
 fail: