From 0c317a02ca982ca093e71bf07cb562265ba40032 Mon Sep 17 00:00:00 2001 From: Purushottam Kushwaha Date: Wed, 12 Oct 2016 18:26:51 +0530 Subject: cfg80211: support virtual interfaces with different beacon intervals This commit provides a mechanism for the host drivers to advertise the support for different beacon intervals among the respective interface combinations in a group, through NL80211_IFACE_COMB_BI_MIN_GCD (u32). This value will be compared against GCD of all beaconing interfaces of matching combinations. If the driver doesn't advertise this value, the old behaviour where all beacon intervals must be identical is retained. If it is specified, then any beacon interval for an interface in the interface combination as well as the GCD of all active beacon intervals in the combination must be greater or equal to this value. Signed-off-by: Purushottam Kushwaha [change commit message, some variable names, small other things] Signed-off-by: Johannes Berg --- net/wireless/nl80211.c | 14 +++++++++++--- 1 file changed, 11 insertions(+), 3 deletions(-) (limited to 'net/wireless/nl80211.c') diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index c510810f0b7c..903cd5a5d1ce 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -1075,6 +1075,10 @@ static int nl80211_put_iface_combinations(struct wiphy *wiphy, nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS, c->radar_detect_regions))) goto nla_put_failure; + if (c->beacon_int_min_gcd && + nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD, + c->beacon_int_min_gcd)) + goto nla_put_failure; nla_nest_end(msg, nl_combi); } @@ -3803,7 +3807,8 @@ static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info) params.dtim_period = nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]); - err = cfg80211_validate_beacon_int(rdev, params.beacon_interval); + err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype, + params.beacon_interval); if (err) return err; @@ -8152,7 +8157,8 @@ static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info) ibss.beacon_interval = nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); - err = cfg80211_validate_beacon_int(rdev, ibss.beacon_interval); + err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC, + ibss.beacon_interval); if (err) return err; @@ -9417,7 +9423,9 @@ static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info) setup.beacon_interval = nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); - err = cfg80211_validate_beacon_int(rdev, setup.beacon_interval); + err = cfg80211_validate_beacon_int(rdev, + NL80211_IFTYPE_MESH_POINT, + setup.beacon_interval); if (err) return err; } -- cgit v1.2.3