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| author | Johannes Berg <johannes@sipsolutions.net> | 2009-03-31 12:12:05 +0200 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2009-04-22 16:54:39 -0400 |
| commit | 18a8365992a8041aa178ae9ad5f0d951d0457230 (patch) | |
| tree | cb7a461139269feb191e5f5d03c4438cfa9335f2 /net/wireless/nl80211.c | |
| parent | 75c2148fa5330c6de741fc96e3308f57d846a6b4 (diff) | |
| download | linux-18a8365992a8041aa178ae9ad5f0d951d0457230.tar.gz linux-18a8365992a8041aa178ae9ad5f0d951d0457230.tar.bz2 linux-18a8365992a8041aa178ae9ad5f0d951d0457230.zip | |
cfg80211: introduce scan IE limit attribute
This patch introduces a new attribute for a wiphy that tells
userspace how long the information elements added to a probe
request frame can be at most. It also updates the at76 to
advertise that it cannot support that, and, for now until I
can fix that, iwlwifi too.
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/wireless/nl80211.c')
| -rw-r--r-- | net/wireless/nl80211.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 1394115cde95..447fa1790b4e 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -181,6 +181,8 @@ static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags, NLA_PUT_STRING(msg, NL80211_ATTR_WIPHY_NAME, wiphy_name(&dev->wiphy)); NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS, dev->wiphy.max_scan_ssids); + NLA_PUT_U16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN, + dev->wiphy.max_scan_ie_len); nl_modes = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_IFTYPES); if (!nl_modes) @@ -2528,6 +2530,11 @@ static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info) else ie_len = 0; + if (ie_len > wiphy->max_scan_ie_len) { + err = -EINVAL; + goto out; + } + request = kzalloc(sizeof(*request) + sizeof(*ssid) * n_ssids + sizeof(channel) * n_channels |