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mac80211: consolidate TDLS IE treatment

Browse source 
Add all information elements for TDLS discovery and setup in the same
function.

Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Reviewed-by: Liad Kaufman <liad.kaufman@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Arik Nemtsov 2014-07-17 17:14:19 +03:00 committed by Johannes Berg
parent 6ae32e5d28
commit 46792a2dfc
1 changed files with 41 additions and 28 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

69
net/mac80211/tdls.c
View file

@ -78,13 +78,49 @@ static void ieee80211_tdls_add_link_ie(struct sk_buff *skb, const u8 *src_addr,
memcpy(lnkid->resp_sta, peer, ETH_ALEN);
}
static void ieee80211_tdls_add_ies(struct ieee80211_sub_if_data *sdata,
struct sk_buff *skb, const u8 *peer,
u8 action_code, bool initiator,
const u8 *extra_ies, size_t extra_ies_len)
{
const u8 *init_addr, *rsp_addr;
enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
switch (action_code) {
case WLAN_TDLS_SETUP_REQUEST:
case WLAN_TDLS_SETUP_RESPONSE:
case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
ieee80211_add_srates_ie(sdata, skb, false, band);
ieee80211_add_ext_srates_ie(sdata, skb, false, band);
ieee80211_tdls_add_ext_capab(skb);
break;
case WLAN_TDLS_SETUP_CONFIRM:
case WLAN_TDLS_TEARDOWN:
case WLAN_TDLS_DISCOVERY_REQUEST:
break;
}
if (initiator) {
init_addr = sdata->vif.addr;
rsp_addr = peer;
} else {
init_addr = peer;
rsp_addr = sdata->vif.addr;
}
if (extra_ies_len)
memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len);
ieee80211_tdls_add_link_ie(skb, init_addr, rsp_addr,
sdata->u.mgd.bssid);
}
static int
ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev,
const u8 *peer, u8 action_code, u8 dialog_token,
u16 status_code, struct sk_buff *skb)
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
struct ieee80211_tdls_data *tf;
tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u));
@ -103,10 +139,6 @@ ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev,
tf->u.setup_req.dialog_token = dialog_token;
tf->u.setup_req.capability =
cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
ieee80211_add_srates_ie(sdata, skb, false, band);
ieee80211_add_ext_srates_ie(sdata, skb, false, band);
ieee80211_tdls_add_ext_capab(skb);
break;
case WLAN_TDLS_SETUP_RESPONSE:
tf->category = WLAN_CATEGORY_TDLS;
@ -117,10 +149,6 @@ ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev,
tf->u.setup_resp.dialog_token = dialog_token;
tf->u.setup_resp.capability =
cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
ieee80211_add_srates_ie(sdata, skb, false, band);
ieee80211_add_ext_srates_ie(sdata, skb, false, band);
ieee80211_tdls_add_ext_capab(skb);
break;
case WLAN_TDLS_SETUP_CONFIRM:
tf->category = WLAN_CATEGORY_TDLS;
@ -157,7 +185,6 @@ 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);
enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
struct ieee80211_mgmt *mgmt;
mgmt = (void *)skb_put(skb, 24);
@ -179,10 +206,6 @@ ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev,
dialog_token;
mgmt->u.action.u.tdls_discover_resp.capability =
cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
ieee80211_add_srates_ie(sdata, skb, false, band);
ieee80211_add_ext_srates_ie(sdata, skb, false, band);
ieee80211_tdls_add_ext_capab(skb);
break;
default:
return -EINVAL;
@ -202,7 +225,6 @@ ieee80211_tdls_prep_mgmt_packet(struct wiphy *wiphy, struct net_device *dev,
struct ieee80211_local *local = sdata->local;
struct sk_buff *skb = NULL;
bool send_direct;
const u8 *init_addr, *rsp_addr;
struct sta_info *sta;
int ret;
@ -243,9 +265,6 @@ ieee80211_tdls_prep_mgmt_packet(struct wiphy *wiphy, struct net_device *dev,
if (ret < 0)
goto fail;
if (extra_ies_len)
memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len);
rcu_read_lock();
sta = sta_info_get(sdata, peer);
@ -279,21 +298,15 @@ ieee80211_tdls_prep_mgmt_packet(struct wiphy *wiphy, struct net_device *dev,
break;
}
if (initiator || (sta && test_sta_flag(sta, WLAN_STA_TDLS_INITIATOR))) {
init_addr = sdata->vif.addr;
rsp_addr = peer;
} else {
init_addr = peer;
rsp_addr = sdata->vif.addr;
}
if (sta && test_sta_flag(sta, WLAN_STA_TDLS_INITIATOR))
initiator = true;
rcu_read_unlock();
if (ret < 0)
goto fail;
ieee80211_tdls_add_link_ie(skb, init_addr, rsp_addr,
sdata->u.mgd.bssid);
ieee80211_tdls_add_ies(sdata, skb, peer, action_code, initiator,
extra_ies, extra_ies_len);
if (send_direct) {
ieee80211_tx_skb(sdata, skb);
return 0;