package/kernel/mac80211/patches/393-mac80211-shorten-the-IBSS-debug-messages.patch

   1 From: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
   2 Date: Fri, 31 Aug 2018 11:31:13 +0300
   3 Subject: [PATCH] mac80211: shorten the IBSS debug messages
   4
   5 When tracing is enabled, all the debug messages are recorded and must
   6 not exceed MAX_MSG_LEN (100) columns. Longer debug messages grant the
   7 user with:
   8
   9 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]
  10 Workqueue: phy1 ieee80211_iface_work [mac80211]
  11  RIP: 0010:trace_event_raw_event_mac80211_msg_event+0xab/0xc0 [mac80211]
  12  Call Trace:
  13   __sdata_dbg+0xbd/0x120 [mac80211]
  14   ieee80211_ibss_rx_queued_mgmt+0x15f/0x510 [mac80211]
  15   ieee80211_iface_work+0x21d/0x320 [mac80211]
  16
  17 Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
  18 Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
  19 Signed-off-by: Johannes Berg <johannes.berg@intel.com>
  20 ---
  21
  22 --- a/net/mac80211/ibss.c
  23 +++ b/net/mac80211/ibss.c
  24 @@ -947,8 +947,8 @@ static void ieee80211_rx_mgmt_deauth_ibs
  25         if (len < IEEE80211_DEAUTH_FRAME_LEN)
  26                 return;
  27
  28 -       ibss_dbg(sdata, "RX DeAuth SA=%pM DA=%pM BSSID=%pM (reason: %d)\n",
  29 -                mgmt->sa, mgmt->da, mgmt->bssid, reason);
  30 +       ibss_dbg(sdata, "RX DeAuth SA=%pM DA=%pM\n", mgmt->sa, mgmt->da);
  31 +       ibss_dbg(sdata, "\tBSSID=%pM (reason: %d)\n", mgmt->bssid, reason);
  32         sta_info_destroy_addr(sdata, mgmt->sa);
  33  }
  34
  35 @@ -966,9 +966,9 @@ static void ieee80211_rx_mgmt_auth_ibss(
  36         auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg);
  37         auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction);
  38
  39 -       ibss_dbg(sdata,
  40 -                "RX Auth SA=%pM DA=%pM BSSID=%pM (auth_transaction=%d)\n",
  41 -                mgmt->sa, mgmt->da, mgmt->bssid, auth_transaction);
  42 +       ibss_dbg(sdata, "RX Auth SA=%pM DA=%pM\n", mgmt->sa, mgmt->da);
  43 +       ibss_dbg(sdata, "\tBSSID=%pM (auth_transaction=%d)\n",
  44 +                mgmt->bssid, auth_transaction);
  45
  46         if (auth_alg != WLAN_AUTH_OPEN || auth_transaction != 1)
  47                 return;
  48 @@ -1175,10 +1175,10 @@ static void ieee80211_rx_bss_info(struct
  49                 rx_timestamp = drv_get_tsf(local, sdata);
  50         }
  51
  52 -       ibss_dbg(sdata,
  53 -                "RX beacon SA=%pM BSSID=%pM TSF=0x%llx BCN=0x%llx diff=%lld @%lu\n",
  54 +       ibss_dbg(sdata, "RX beacon SA=%pM BSSID=%pM TSF=0x%llx\n",
  55                  mgmt->sa, mgmt->bssid,
  56 -                (unsigned long long)rx_timestamp,
  57 +                (unsigned long long)rx_timestamp);
  58 +       ibss_dbg(sdata, "\tBCN=0x%llx diff=%lld @%lu\n",
  59                  (unsigned long long)beacon_timestamp,
  60                  (unsigned long long)(rx_timestamp - beacon_timestamp),
  61                  jiffies);
  62 @@ -1537,9 +1537,9 @@ static void ieee80211_rx_mgmt_probe_req(
  63
  64         tx_last_beacon = drv_tx_last_beacon(local);
  65
  66 -       ibss_dbg(sdata,
  67 -                "RX ProbeReq SA=%pM DA=%pM BSSID=%pM (tx_last_beacon=%d)\n",
  68 -                mgmt->sa, mgmt->da, mgmt->bssid, tx_last_beacon);
  69 +       ibss_dbg(sdata, "RX ProbeReq SA=%pM DA=%pM\n", mgmt->sa, mgmt->da);
  70 +       ibss_dbg(sdata, "\tBSSID=%pM (tx_last_beacon=%d)\n",
  71 +                mgmt->bssid, tx_last_beacon);
  72
  73         if (!tx_last_beacon && is_multicast_ether_addr(mgmt->da))
  74                 return;