cfg80211: prohibit zero keepalive interval
It's not useful to specify a 0 keepalive interval, this
would send too much data. Prohibit this to also avoid
device issues.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 3acde3f..a8bd453 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -7636,7 +7636,8 @@
return -EINVAL;
if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
- rdev->wiphy.wowlan.tcp->data_interval_max)
+ rdev->wiphy.wowlan.tcp->data_interval_max ||
+ nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
return -EINVAL;
wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);