mac80211: prepare TDLS mgmt code for channel-switch templates
Split the data-generating from the Tx-sending functionality, as we do
not want to send templates to the lower driver. Also add an optional
chandef argument to the data-generating portion. It will be used for
channel-switch templates.
Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
diff --git a/net/mac80211/tdls.c b/net/mac80211/tdls.c
index 4554bdc..fa141ae 100644
--- a/net/mac80211/tdls.c
+++ b/net/mac80211/tdls.c
@@ -453,7 +453,8 @@
struct sk_buff *skb, const u8 *peer,
u8 action_code, u16 status_code,
bool initiator, const u8 *extra_ies,
- size_t extra_ies_len)
+ size_t extra_ies_len, u8 oper_class,
+ struct cfg80211_chan_def *chandef)
{
switch (action_code) {
case WLAN_TDLS_SETUP_REQUEST:
@@ -589,22 +590,19 @@
return 0;
}
-static int
-ieee80211_tdls_prep_mgmt_packet(struct wiphy *wiphy, struct net_device *dev,
- const u8 *peer, u8 action_code,
- u8 dialog_token, u16 status_code,
- u32 peer_capability, bool initiator,
- const u8 *extra_ies, size_t extra_ies_len)
+static struct sk_buff *
+ieee80211_tdls_build_mgmt_packet_data(struct ieee80211_sub_if_data *sdata,
+ const u8 *peer, u8 action_code,
+ u8 dialog_token, u16 status_code,
+ bool initiator, const u8 *extra_ies,
+ size_t extra_ies_len, u8 oper_class,
+ struct cfg80211_chan_def *chandef)
{
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
struct ieee80211_local *local = sdata->local;
- struct sk_buff *skb = NULL;
- u32 flags = 0;
- bool send_direct;
- struct sta_info *sta;
+ struct sk_buff *skb;
int ret;
- skb = netdev_alloc_skb(dev,
+ skb = netdev_alloc_skb(sdata->dev,
local->hw.extra_tx_headroom +
max(sizeof(struct ieee80211_mgmt),
sizeof(struct ieee80211_tdls_data)) +
@@ -618,7 +616,7 @@
extra_ies_len +
sizeof(struct ieee80211_tdls_lnkie));
if (!skb)
- return -ENOMEM;
+ return NULL;
skb_reserve(skb, local->hw.extra_tx_headroom);
@@ -628,16 +626,16 @@
case WLAN_TDLS_SETUP_CONFIRM:
case WLAN_TDLS_TEARDOWN:
case WLAN_TDLS_DISCOVERY_REQUEST:
- ret = ieee80211_prep_tdls_encap_data(wiphy, dev, peer,
+ ret = ieee80211_prep_tdls_encap_data(local->hw.wiphy,
+ sdata->dev, peer,
action_code, dialog_token,
status_code, skb);
- send_direct = false;
break;
case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
- ret = ieee80211_prep_tdls_direct(wiphy, dev, peer, action_code,
+ ret = ieee80211_prep_tdls_direct(local->hw.wiphy, sdata->dev,
+ peer, action_code,
dialog_token, status_code,
skb);
- send_direct = true;
break;
default:
ret = -ENOTSUPP;
@@ -647,6 +645,30 @@
if (ret < 0)
goto fail;
+ ieee80211_tdls_add_ies(sdata, skb, peer, action_code, status_code,
+ initiator, extra_ies, extra_ies_len, oper_class,
+ chandef);
+ return skb;
+
+fail:
+ dev_kfree_skb(skb);
+ return NULL;
+}
+
+static int
+ieee80211_tdls_prep_mgmt_packet(struct wiphy *wiphy, struct net_device *dev,
+ const u8 *peer, u8 action_code, u8 dialog_token,
+ u16 status_code, u32 peer_capability,
+ bool initiator, const u8 *extra_ies,
+ size_t extra_ies_len, u8 oper_class,
+ struct cfg80211_chan_def *chandef)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct sk_buff *skb = NULL;
+ struct sta_info *sta;
+ u32 flags = 0;
+ int ret = 0;
+
rcu_read_lock();
sta = sta_info_get(sdata, peer);
@@ -691,9 +713,17 @@
if (ret < 0)
goto fail;
- ieee80211_tdls_add_ies(sdata, skb, peer, action_code, status_code,
- initiator, extra_ies, extra_ies_len);
- if (send_direct) {
+ skb = ieee80211_tdls_build_mgmt_packet_data(sdata, peer, action_code,
+ dialog_token, status_code,
+ initiator, extra_ies,
+ extra_ies_len, oper_class,
+ chandef);
+ if (!skb) {
+ ret = -EINVAL;
+ goto fail;
+ }
+
+ if (action_code == WLAN_PUB_ACTION_TDLS_DISCOVER_RES) {
ieee80211_tx_skb(sdata, skb);
return 0;
}
@@ -720,7 +750,7 @@
* packet through the AP.
*/
if ((action_code == WLAN_TDLS_TEARDOWN) &&
- (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)) {
+ (sdata->local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)) {
struct sta_info *sta = NULL;
bool try_resend; /* Should we keep skb for possible resend */
@@ -802,7 +832,8 @@
ret = ieee80211_tdls_prep_mgmt_packet(wiphy, dev, peer, action_code,
dialog_token, status_code,
peer_capability, initiator,
- extra_ies, extra_ies_len);
+ extra_ies, extra_ies_len, 0,
+ NULL);
if (ret < 0)
goto exit;
@@ -841,7 +872,8 @@
ret = ieee80211_tdls_prep_mgmt_packet(wiphy, dev, peer, action_code,
dialog_token, status_code,
peer_capability, initiator,
- extra_ies, extra_ies_len);
+ extra_ies, extra_ies_len, 0,
+ NULL);
if (ret < 0)
sdata_err(sdata, "Failed sending TDLS teardown packet %d\n",
ret);
@@ -911,7 +943,7 @@
status_code,
peer_capability,
initiator, extra_ies,
- extra_ies_len);
+ extra_ies_len, 0, NULL);
break;
default:
ret = -EOPNOTSUPP;