From 12d20fc9186a742d40e824f575df5aa62be31d69 Mon Sep 17 00:00:00 2001 From: Purushottam Kushwaha Date: Thu, 11 Aug 2016 15:14:02 +0530 Subject: [PATCH] cfg80211: identically validate beacon interval for AP/MESH/IBSS Beacon interval interface combinations validation was missing for MESH/IBSS join, add those. Johannes: also move the beacon interval check disallowing really tiny and really big intervals into the common function, which adds it for AP mode. Signed-off-by: Purushottam Kushwaha Signed-off-by: Johannes Berg --- net/wireless/nl80211.c | 16 +++++++++------- net/wireless/util.c | 2 +- 2 files changed, 10 insertions(+), 8 deletions(-) diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 0560870..d36c40a 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -7752,12 +7752,13 @@ static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info) ibss.beacon_interval = 100; - if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) { + if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) ibss.beacon_interval = nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); - if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000) - return -EINVAL; - } + + err = cfg80211_validate_beacon_int(rdev, ibss.beacon_interval); + if (err) + return err; if (!rdev->ops->join_ibss) return -EOPNOTSUPP; @@ -9231,9 +9232,10 @@ static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info) if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) { setup.beacon_interval = nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); - if (setup.beacon_interval < 10 || - setup.beacon_interval > 10000) - return -EINVAL; + + err = cfg80211_validate_beacon_int(rdev, setup.beacon_interval); + if (err) + return err; } if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) { diff --git a/net/wireless/util.c b/net/wireless/util.c index b7d1592..0675f51 100644 --- a/net/wireless/util.c +++ b/net/wireless/util.c @@ -1559,7 +1559,7 @@ int cfg80211_validate_beacon_int(struct cfg80211_registered_device *rdev, struct wireless_dev *wdev; int res = 0; - if (!beacon_int) + if (beacon_int < 10 || beacon_int > 10000) return -EINVAL; list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) { -- 2.7.4