Commit 6b77863b authored by Johannes Berg's avatar Johannes Berg
Browse files

mac80211: fix current vs. operating channel in preq/beacon 



When sending probe requests, e.g. during software scanning,
these will go out on the *current* channel, so their IEs
need to be built from the current channel. At other times,
e.g. for beacons or probe request templates, the IEs will
be used on the *operating* channel and using the current
channel instead might result in errors.

Add the appropriate parameters to respect the difference.

Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
parent 679ef4ea

net/mac80211/cfg.c

+14 −6
Original line number Diff line number Diff line
@@ -2655,6 +2655,7 @@ ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev, 
			       u16 status_code, struct sk_buff *skb)

{

	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);

	struct ieee80211_local *local = sdata->local;

	struct ieee80211_tdls_data *tf;



	tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u));
@@ -2674,8 +2675,10 @@ ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev, 
		tf->u.setup_req.capability =

			cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));



		ieee80211_add_srates_ie(sdata, skb, false);

		ieee80211_add_ext_srates_ie(sdata, skb, false);

		ieee80211_add_srates_ie(sdata, skb, false,

					local->oper_channel->band);

		ieee80211_add_ext_srates_ie(sdata, skb, false,

					    local->oper_channel->band);

		ieee80211_tdls_add_ext_capab(skb);

		break;

	case WLAN_TDLS_SETUP_RESPONSE:
@@ -2688,8 +2691,10 @@ ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev, 
		tf->u.setup_resp.capability =

			cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));



		ieee80211_add_srates_ie(sdata, skb, false);

		ieee80211_add_ext_srates_ie(sdata, skb, false);

		ieee80211_add_srates_ie(sdata, skb, false,

					local->oper_channel->band);

		ieee80211_add_ext_srates_ie(sdata, skb, false,

					    local->oper_channel->band);

		ieee80211_tdls_add_ext_capab(skb);

		break;

	case WLAN_TDLS_SETUP_CONFIRM:
@@ -2727,6 +2732,7 @@ ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev, 
			   u16 status_code, struct sk_buff *skb)

{

	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);

	struct ieee80211_local *local = sdata->local;

	struct ieee80211_mgmt *mgmt;



	mgmt = (void *)skb_put(skb, 24);
@@ -2749,8 +2755,10 @@ ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev, 
		mgmt->u.action.u.tdls_discover_resp.capability =

			cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));



		ieee80211_add_srates_ie(sdata, skb, false);

		ieee80211_add_ext_srates_ie(sdata, skb, false);

		ieee80211_add_srates_ie(sdata, skb, false,

					local->oper_channel->band);

		ieee80211_add_ext_srates_ie(sdata, skb, false,

					    local->oper_channel->band);

		ieee80211_tdls_add_ext_capab(skb);

		break;

	default:

net/mac80211/ieee80211_i.h

+5 −2
Original line number Diff line number Diff line
@@ -1459,6 +1459,7 @@ int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, 
			     u8 channel);

struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,

					  u8 *dst, u32 ratemask,

					  struct ieee80211_channel *chan,

					  const u8 *ssid, size_t ssid_len,

					  const u8 *ie, size_t ie_len,

					  bool directed);
@@ -1489,9 +1490,11 @@ u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 
u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,

			       u32 cap);

int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,

			    struct sk_buff *skb, bool need_basic);

			    struct sk_buff *skb, bool need_basic,

			    enum ieee80211_band band);

int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,

				struct sk_buff *skb, bool need_basic);

				struct sk_buff *skb, bool need_basic,

				enum ieee80211_band band);



/* channel management */

enum ieee80211_chan_mode {

net/mac80211/mesh_plink.c

+4 −2
Original line number Diff line number Diff line
@@ -258,8 +258,10 @@ static int mesh_plink_frame_tx(struct ieee80211_sub_if_data *sdata, 
			pos = skb_put(skb, 2);

			memcpy(pos + 2, &plid, 2);

		}

		if (ieee80211_add_srates_ie(sdata, skb, true) ||

		    ieee80211_add_ext_srates_ie(sdata, skb, true) ||

		if (ieee80211_add_srates_ie(sdata, skb, true,

					    local->oper_channel->band) ||

		    ieee80211_add_ext_srates_ie(sdata, skb, true,

						local->oper_channel->band) ||

		    mesh_add_rsn_ie(skb, sdata) ||

		    mesh_add_meshid_ie(skb, sdata) ||

		    mesh_add_meshconf_ie(skb, sdata))

net/mac80211/mlme.c

+3 −1
Original line number Diff line number Diff line
@@ -1683,7 +1683,9 @@ struct sk_buff *ieee80211_ap_probereq_get(struct ieee80211_hw *hw, 
		ssid_len = ssid[1];



	skb = ieee80211_build_probe_req(sdata, cbss->bssid,

					(u32) -1, ssid + 2, ssid_len,

					(u32) -1,

					sdata->local->oper_channel,

					ssid + 2, ssid_len,

					NULL, 0, true);



	return skb;

net/mac80211/tx.c

+3 −3
Original line number Diff line number Diff line
@@ -2303,7 +2303,7 @@ struct sk_buff *ieee80211_beacon_get_tim(struct ieee80211_hw *hw, 
	struct ieee80211_if_ap *ap = NULL;

	struct beacon_data *beacon;

	struct ieee80211_supported_band *sband;

	enum ieee80211_band band = local->hw.conf.channel->band;

	enum ieee80211_band band = local->oper_channel->band;

	struct ieee80211_tx_rate_control txrc;



	sband = local->hw.wiphy->bands[band];
@@ -2429,9 +2429,9 @@ struct sk_buff *ieee80211_beacon_get_tim(struct ieee80211_hw *hw, 
		*pos++ = WLAN_EID_SSID;

		*pos++ = 0x0;



		if (ieee80211_add_srates_ie(sdata, skb, true) ||

		if (ieee80211_add_srates_ie(sdata, skb, true, band) ||

		    mesh_add_ds_params_ie(skb, sdata) ||

		    ieee80211_add_ext_srates_ie(sdata, skb, true) ||

		    ieee80211_add_ext_srates_ie(sdata, skb, true, band) ||

		    mesh_add_rsn_ie(skb, sdata) ||

		    mesh_add_ht_cap_ie(skb, sdata) ||

		    mesh_add_ht_oper_ie(skb, sdata) ||

CRA Git | Maintained and supported by SUSTech CRA and CCSE