From fe1abafd942f3fac233c27d7ddebe5ed913edbff Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Wed, 27 Feb 2013 15:39:45 +0100 Subject: [PATCH] nl80211: re-add channel width and extended capa advertising Add back the channel width and extended capability data to wiphy information if split information is supported. Signed-off-by: Johannes Berg --- net/wireless/nl80211.c | 36 +++++++++++++++++++++++++++++++++--- 1 file changed, 33 insertions(+), 3 deletions(-) diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index c73a4dd4e19f..3a45ea614cbb 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -573,6 +573,21 @@ static int nl80211_msg_put_channel(struct sk_buff *msg, } } + if (large) { + if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) && + nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS)) + goto nla_put_failure; + if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) && + nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS)) + goto nla_put_failure; + if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) && + nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ)) + goto nla_put_failure; + if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) && + nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ)) + goto nla_put_failure; + } + if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER, DBM_TO_MBM(chan->max_power))) goto nla_put_failure; @@ -1137,6 +1152,7 @@ static int nl80211_send_wiphy(struct cfg80211_registered_device *dev, const struct ieee80211_txrx_stypes *mgmt_stypes = dev->wiphy.mgmt_stypes; long start = 0, start_chan = 0, start_band = 0; + u32 features; hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_WIPHY); if (!hdr) @@ -1461,8 +1477,15 @@ static int nl80211_send_wiphy(struct cfg80211_registered_device *dev, dev->wiphy.ap_sme_capa)) goto nla_put_failure; - if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, - dev->wiphy.features)) + features = dev->wiphy.features; + /* + * We can only add the per-channel limit information if the + * dump is split, otherwise it makes it too big. Therefore + * only advertise it in that case. + */ + if (split) + features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS; + if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features)) goto nla_put_failure; if (dev->wiphy.ht_capa_mod_mask && @@ -1490,7 +1513,14 @@ static int nl80211_send_wiphy(struct cfg80211_registered_device *dev, (*split_start)++; break; case 9: - /* placeholder */ + if (dev->wiphy.extended_capabilities && + (nla_put(msg, NL80211_ATTR_EXT_CAPA, + dev->wiphy.extended_capabilities_len, + dev->wiphy.extended_capabilities) || + nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK, + dev->wiphy.extended_capabilities_len, + dev->wiphy.extended_capabilities_mask))) + goto nla_put_failure; /* done */ *split_start = 0;