From 0c9ca11b1ae8eb16c1b6bbae91991392d2321372 Mon Sep 17 00:00:00 2001 From: Beni Lev Date: Wed, 17 Feb 2016 20:30:00 +0200 Subject: cfg80211: Add global RRM capability Today, the supplicant will add the RRM capabilities Information Element in the association request only if Quiet period is supported (NL80211_FEATURE_QUIET). Quiet is one of many RRM features, and there are other RRM features that are not related to Quiet (e.g. neighbor report). Therefore, requiring Quiet to enable RRM is too restrictive. Some of the features, like neighbor report, can be supported by user space without any help from the kernel. Hence adding the RRM capabilities IE to association request should be the sole user space's decision. Removing the RRM dependency on Quiet in the driver solves this problem, but using an old driver with a user space tool that would not require Quiet feature would be problematic: the user space would add NL80211_ATTR_USE_RRM in the association request even if the kernel doesn't advertize NL80211_FEATURE_QUIET and the association would be denied by the kernel. This solution adds a global RRM capability, that tells user space that it can request RRM capabilities IE publishment without any specific feature support in the kernel. Signed-off-by: Beni Lev Signed-off-by: Emmanuel Grumbach Signed-off-by: Johannes Berg --- net/wireless/nl80211.c | 18 +++++++++++------- 1 file changed, 11 insertions(+), 7 deletions(-) (limited to 'net/wireless') diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 268cb493f6a5..90890f183c0e 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -3,7 +3,7 @@ * * Copyright 2006-2010 Johannes Berg * Copyright 2013-2014 Intel Mobile Communications GmbH - * Copyright 2015 Intel Deutschland GmbH + * Copyright 2015-2016 Intel Deutschland GmbH */ #include @@ -7286,9 +7286,11 @@ static int nl80211_associate(struct sk_buff *skb, struct genl_info *info) } if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) { - if (!(rdev->wiphy.features & - NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) || - !(rdev->wiphy.features & NL80211_FEATURE_QUIET)) + if (!((rdev->wiphy.features & + NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) && + (rdev->wiphy.features & NL80211_FEATURE_QUIET)) && + !wiphy_ext_feature_isset(&rdev->wiphy, + NL80211_EXT_FEATURE_RRM)) return -EINVAL; req.flags |= ASSOC_REQ_USE_RRM; } @@ -7976,9 +7978,11 @@ static int nl80211_connect(struct sk_buff *skb, struct genl_info *info) } if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) { - if (!(rdev->wiphy.features & - NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) || - !(rdev->wiphy.features & NL80211_FEATURE_QUIET)) { + if (!((rdev->wiphy.features & + NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) && + (rdev->wiphy.features & NL80211_FEATURE_QUIET)) && + !wiphy_ext_feature_isset(&rdev->wiphy, + NL80211_EXT_FEATURE_RRM)) { kzfree(connkeys); return -EINVAL; } -- cgit v1.2.3