mirror/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

mwifiex: don't print SSID to logs

Browse Source 
There are a few reasons not to dump SSIDs as-is in kernel logs:

1) they're not guaranteed to be any particular text encoding (UTF-8,
   ASCII, ...) in general
2) it's somewhat redundant; the BSSID should be enough to uniquely
   identify the AP/STA to which we're connecting
3) BSSIDs have an easily-recognized format, whereas SSIDs do not (they
   are free-form)
4) other common drivers (e.g., everything based on mac80211) get along
   just fine by only including BSSIDs when logging state transitions

Additional notes on reason #3: this is important for the
privacy-conscious, especially when providing tools that convey
kernel logs on behalf of a user -- e.g., when reporting bugs. So for
example, it's easy to automatically filter logs for MAC addresses, but
it's much harder to filter SSIDs out of unstructured text.

Signed-off-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210225024454.4106485-1-briannorris@chromium.org
This commit is contained in:
Brian Norris
2021-02-24 18:44:54 -08:00
committed by Kalle Valo
parent 260a9ad944
commit d23a962203
1 changed files with 4 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
drivers/net/wireless/marvell/mwifiex/cfg80211.c
View File

@@ -2300,8 +2300,7 @@ done:
is_scanning_required = 1;
} else {
mwifiex_dbg(priv->adapter, MSG,
"info: trying to associate to '%.*s' bssid %pM\n",
req_ssid.ssid_len, (char *)req_ssid.ssid,
"info: trying to associate to bssid %pM\n",
bss->bssid);
memcpy(&priv->cfg_bssid, bss->bssid, ETH_ALEN);
break;
@@ -2378,8 +2377,7 @@ mwifiex_cfg80211_connect(struct wiphy *wiphy, struct net_device *dev,
}
mwifiex_dbg(adapter, INFO,
"info: Trying to associate to %.*s and bssid %pM\n",
(int)sme->ssid_len, (char *)sme->ssid, sme->bssid);
"info: Trying to associate to bssid %pM\n", sme->bssid);
if (!mwifiex_stop_bg_scan(priv))
cfg80211_sched_scan_stopped_locked(priv->wdev.wiphy, 0);
@@ -2512,9 +2510,8 @@ mwifiex_cfg80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
goto done;
}
mwifiex_dbg(priv->adapter, MSG,
"info: trying to join to %.*s and bssid %pM\n",
params->ssid_len, (char *)params->ssid, params->bssid);
mwifiex_dbg(priv->adapter, MSG, "info: trying to join to bssid %pM\n",
params->bssid);
mwifiex_set_ibss_params(priv, params);