mac80211: shorten the IBSS debug messages

[ Upstream commit c6e57b3896fc76299913b8cfd82d853bee8a2c84 ]

When tracing is enabled, all the debug messages are recorded and must
not exceed MAX_MSG_LEN (100) columns. Longer debug messages grant the
user with:

WARNING: CPU: 3 PID: 32642 at /tmp/wifi-core-20180806094828/src/iwlwifi-stack-dev/net/mac80211/./trace_msg.h:32 trace_event_raw_event_mac80211_msg_event+0xab/0xc0 [mac80211]
Workqueue: phy1 ieee80211_iface_work [mac80211]
 RIP: 0010:trace_event_raw_event_mac80211_msg_event+0xab/0xc0 [mac80211]
 Call Trace:
  __sdata_dbg+0xbd/0x120 [mac80211]
  ieee80211_ibss_rx_queued_mgmt+0x15f/0x510 [mac80211]
  ieee80211_iface_work+0x21d/0x320 [mac80211]

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c
index a5acaf1efaabce9a623a396e4024d56481d3d048..0c0695eb2609a56746fec9a8da813eed295704ad 100644 (file)
--- a/net/mac80211/ibss.c
+++ b/net/mac80211/ibss.c
@@ -948,8 +948,8 @@ static void ieee80211_rx_mgmt_deauth_ibss(struct ieee80211_sub_if_data *sdata,
        if (len < IEEE80211_DEAUTH_FRAME_LEN)
                return;
 
-       ibss_dbg(sdata, "RX DeAuth SA=%pM DA=%pM BSSID=%pM (reason: %d)\n",
-                mgmt->sa, mgmt->da, mgmt->bssid, reason);
+       ibss_dbg(sdata, "RX DeAuth SA=%pM DA=%pM\n", mgmt->sa, mgmt->da);
+       ibss_dbg(sdata, "\tBSSID=%pM (reason: %d)\n", mgmt->bssid, reason);
        sta_info_destroy_addr(sdata, mgmt->sa);
 }
 
@@ -967,9 +967,9 @@ static void ieee80211_rx_mgmt_auth_ibss(struct ieee80211_sub_if_data *sdata,
        auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg);
        auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction);
 
-       ibss_dbg(sdata,
-                "RX Auth SA=%pM DA=%pM BSSID=%pM (auth_transaction=%d)\n",
-                mgmt->sa, mgmt->da, mgmt->bssid, auth_transaction);
+       ibss_dbg(sdata, "RX Auth SA=%pM DA=%pM\n", mgmt->sa, mgmt->da);
+       ibss_dbg(sdata, "\tBSSID=%pM (auth_transaction=%d)\n",
+                mgmt->bssid, auth_transaction);
 
        if (auth_alg != WLAN_AUTH_OPEN || auth_transaction != 1)
                return;
@@ -1176,10 +1176,10 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
                rx_timestamp = drv_get_tsf(local, sdata);
        }
 
-       ibss_dbg(sdata,
-                "RX beacon SA=%pM BSSID=%pM TSF=0x%llx BCN=0x%llx diff=%lld @%lu\n",
+       ibss_dbg(sdata, "RX beacon SA=%pM BSSID=%pM TSF=0x%llx\n",
                 mgmt->sa, mgmt->bssid,
-                (unsigned long long)rx_timestamp,
+                (unsigned long long)rx_timestamp);
+       ibss_dbg(sdata, "\tBCN=0x%llx diff=%lld @%lu\n",
                 (unsigned long long)beacon_timestamp,
                 (unsigned long long)(rx_timestamp - beacon_timestamp),
                 jiffies);
@@ -1538,9 +1538,9 @@ static void ieee80211_rx_mgmt_probe_req(struct ieee80211_sub_if_data *sdata,
 
        tx_last_beacon = drv_tx_last_beacon(local);
 
-       ibss_dbg(sdata,
-                "RX ProbeReq SA=%pM DA=%pM BSSID=%pM (tx_last_beacon=%d)\n",
-                mgmt->sa, mgmt->da, mgmt->bssid, tx_last_beacon);
+       ibss_dbg(sdata, "RX ProbeReq SA=%pM DA=%pM\n", mgmt->sa, mgmt->da);
+       ibss_dbg(sdata, "\tBSSID=%pM (tx_last_beacon=%d)\n",
+                mgmt->bssid, tx_last_beacon);
 
        if (!tx_last_beacon && is_multicast_ether_addr(mgmt->da))
                return;