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cfg80211: advertise extended capabilities to userspace

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In many cases, userspace may need to know which of the
802.11 extended capabilities ("Extended Capabilities
element") are implemented in the driver or device, to
include them e.g. in beacons, assoc request/response
or other frames. Add a new nl80211 attribute to hold
the extended capabilities bitmap for this.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg
2013-02-11 14:20:05 +01:00
parent af0ed69bad
commit a50df0c4c0
3 changed files with 29 additions and 0 deletions
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9
net/wireless/nl80211.c
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@@ -1363,6 +1363,15 @@ static int nl80211_send_wiphy(struct sk_buff *msg, u32 portid, u32 seq, int flag
dev->wiphy.max_acl_mac_addrs))
goto nla_put_failure;
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;
return genlmsg_end(msg, hdr);
nla_put_failure: