mac80211: Save probe response data for bss
Allow setting a probe response template for an interface operating in
AP mode. Low level drivers are notified about changes in the probe
response template and are able to retrieve a copy of the current probe
response. This data can, for example, be uploaded to hardware as a
template.
Signed-off-by: Guy Eilam <guy@wizery.com>
Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index 192f213..c2416fb 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -491,6 +491,31 @@
(params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
}
+static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
+ u8 *resp, size_t resp_len)
+{
+ struct sk_buff *new, *old;
+
+ if (!resp || !resp_len)
+ return -EINVAL;
+
+ old = sdata->u.ap.probe_resp;
+
+ new = dev_alloc_skb(resp_len);
+ if (!new)
+ return -ENOMEM;
+
+ memcpy(skb_put(new, resp_len), resp, resp_len);
+
+ rcu_assign_pointer(sdata->u.ap.probe_resp, new);
+ synchronize_rcu();
+
+ if (old)
+ dev_kfree_skb(old);
+
+ return 0;
+}
+
/*
* This handles both adding a beacon and setting new beacon info
*/
@@ -501,6 +526,7 @@
int new_head_len, new_tail_len;
int size;
int err = -EINVAL;
+ u32 changed = 0;
old = rtnl_dereference(sdata->u.ap.beacon);
@@ -584,11 +610,17 @@
kfree(old);
- ieee80211_config_ap_ssid(sdata, params);
+ err = ieee80211_set_probe_resp(sdata, params->probe_resp,
+ params->probe_resp_len);
+ if (!err)
+ changed |= BSS_CHANGED_AP_PROBE_RESP;
- ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED |
- BSS_CHANGED_BEACON |
- BSS_CHANGED_SSID);
+ ieee80211_config_ap_ssid(sdata, params);
+ changed |= BSS_CHANGED_BEACON_ENABLED |
+ BSS_CHANGED_BEACON |
+ BSS_CHANGED_SSID;
+
+ ieee80211_bss_info_change_notify(sdata, changed);
return 0;
}