Implement the cfg80211 TDLS channel switch ops and introduce new mac80211
ones for low-level drivers.
Verify low-level driver support for the new ops when using the relevant
wiphy feature bit. Also verify the peer supports channel switching before
passing the command down.
Add a new STA flag to track the off-channel state with the TDLS peer and
make sure to cancel the channel-switch if the peer STA is unexpectedly
removed.
Signed-off-by: Arik Nemtsov <arikx.nemtsov@xxxxxxxxx>
Reviewed-by: Johannes Berg <johannes.berg@xxxxxxxxx>
Signed-off-by: Arik Nemtsov <arik@xxxxxxxxxx>
---
include/net/mac80211.h | 19 ++++
net/mac80211/cfg.c | 2 +
net/mac80211/debugfs_sta.c | 10 +-
net/mac80211/driver-ops.h | 41 ++++++++
net/mac80211/ieee80211_i.h | 6 ++
net/mac80211/main.c | 5 +
net/mac80211/sta_info.c | 9 ++
net/mac80211/sta_info.h | 3 +
net/mac80211/tdls.c | 234 +++++++++++++++++++++++++++++++++++++++++++++
net/mac80211/trace.h | 57 +++++++++++
10 files changed, 381 insertions(+), 5 deletions(-)
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index 5f203a6..faef510 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -2878,6 +2878,16 @@ enum ieee80211_reconfig_type {
*
* @get_txpower: get current maximum tx power (in dBm) based on configuration
* and hardware limits.
+ *
+ * @tdls_channel_switch: Start channel-switching with a TDLS peer. The driver
+ * is responsible for continually initiating channel-switching operations
+ * and returning to the base channel for communication with the AP. The
+ * driver receives a channel-switch request template and the location of
+ * the switch-timing IE within the template as part of the invocation.
+ * The template is valid only within the call, and the driver can
+ * optionally copy the skb for further re-use.
+ * @tdls_cancel_channel_switch: Stop channel-switching with a TDLS peer. Both
+ * peers must be on the base channel when the call completes.
*/
struct ieee80211_ops {
void (*tx)(struct ieee80211_hw *hw,
@@ -3089,6 +3099,15 @@ struct ieee80211_ops {
u32 (*get_expected_throughput)(struct ieee80211_sta *sta);
int (*get_txpower)(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
int *dbm);
+
+ int (*tdls_channel_switch)(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
+ struct ieee80211_sta *sta, u8 oper_class,
+ struct cfg80211_chan_def *chandef,
+ struct sk_buff *skb, u32 ch_sw_tm_ie);
+ void (*tdls_cancel_channel_switch)(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
+ struct ieee80211_sta *sta);
};
/**
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index 257edd2..5f99827 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -3749,6 +3749,8 @@ const struct cfg80211_ops mac80211_config_ops = {
.set_rekey_data = ieee80211_set_rekey_data,
.tdls_oper = ieee80211_tdls_oper,
.tdls_mgmt = ieee80211_tdls_mgmt,
+ .tdls_channel_switch = ieee80211_tdls_channel_switch,
+ .tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch,
.probe_client = ieee80211_probe_client,
.set_noack_map = ieee80211_set_noack_map,
#ifdef CONFIG_PM
diff --git a/net/mac80211/debugfs_sta.c b/net/mac80211/debugfs_sta.c
index 2ba7f53..94c7009 100644
--- a/net/mac80211/debugfs_sta.c
+++ b/net/mac80211/debugfs_sta.c
@@ -74,7 +74,7 @@ static ssize_t sta_flags_read(struct file *file, char __user *userbuf,
test_sta_flag(sta, WLAN_STA_##flg) ? #flg "\n" : ""
int res = scnprintf(buf, sizeof(buf),
- "%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s",
+ "%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s",
TEST(AUTH), TEST(ASSOC), TEST(PS_STA),
TEST(PS_DRIVER), TEST(AUTHORIZED),
TEST(SHORT_PREAMBLE),
@@ -83,10 +83,10 @@ static ssize_t sta_flags_read(struct file *file, char __user *userbuf,
TEST(MFP), TEST(BLOCK_BA), TEST(PSPOLL),
TEST(UAPSD), TEST(SP), TEST(TDLS_PEER),
TEST(TDLS_PEER_AUTH), TEST(TDLS_INITIATOR),
- TEST(TDLS_CHAN_SWITCH), TEST(4ADDR_EVENT),
- TEST(INSERTED), TEST(RATE_CONTROL),
- TEST(TOFFSET_KNOWN), TEST(MPSP_OWNER),
- TEST(MPSP_RECIPIENT));
+ TEST(TDLS_CHAN_SWITCH), TEST(TDLS_OFF_CHANNEL),
+ TEST(4ADDR_EVENT), TEST(INSERTED),
+ TEST(RATE_CONTROL), TEST(TOFFSET_KNOWN),
+ TEST(MPSP_OWNER), TEST(MPSP_RECIPIENT));
#undef TEST
return simple_read_from_buffer(userbuf, count, ppos, buf, res);
}
diff --git a/net/mac80211/driver-ops.h b/net/mac80211/driver-ops.h
index 9759dd1..ec4ae42 100644
--- a/net/mac80211/driver-ops.h
+++ b/net/mac80211/driver-ops.h
@@ -1296,4 +1296,45 @@ static inline int drv_get_txpower(struct ieee80211_local *local,
return ret;
}
+static inline int
+drv_tdls_channel_switch(struct ieee80211_local *local,
+ struct ieee80211_sub_if_data *sdata,
+ struct ieee80211_sta *sta, u8 oper_class,
+ struct cfg80211_chan_def *chandef,
+ struct sk_buff *tmpl_skb, u32 ch_sw_tm_ie)
+{
+ int ret;
+
+ might_sleep();
+ if (!check_sdata_in_driver(sdata))
+ return -EIO;
+
+ if (!local->ops->tdls_channel_switch)
+ return -EOPNOTSUPP;
+
+ trace_drv_tdls_channel_switch(local, sdata, sta, oper_class, chandef);
+ ret = local->ops->tdls_channel_switch(&local->hw, &sdata->vif, sta,
+ oper_class, chandef, tmpl_skb,
+ ch_sw_tm_ie);
+ trace_drv_return_int(local, ret);
+ return ret;
+}
+
+static inline void
+drv_tdls_cancel_channel_switch(struct ieee80211_local *local,
+ struct ieee80211_sub_if_data *sdata,
+ struct ieee80211_sta *sta)
+{
+ might_sleep();
+ if (!check_sdata_in_driver(sdata))
+ return;
+
+ if (!local->ops->tdls_cancel_channel_switch)
+ return;
+
+ trace_drv_tdls_cancel_channel_switch(local, sdata, sta);
+ local->ops->tdls_cancel_channel_switch(&local->hw, &sdata->vif, sta);
+ trace_drv_return_void(local);
+}
+
#endif /* __MAC80211_DRIVER_OPS */
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index e786ab6..2c7abc0 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -2007,6 +2007,12 @@ int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
const u8 *peer, enum nl80211_tdls_operation oper);
void ieee80211_tdls_peer_del_work(struct work_struct *wk);
+int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev,
+ const u8 *addr, u8 oper_class,
+ struct cfg80211_chan_def *chandef);
+void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy,
+ struct net_device *dev,
+ const u8 *addr);
extern const struct ethtool_ops ieee80211_ethtool_ops;
diff --git a/net/mac80211/main.c b/net/mac80211/main.c
index 282a4f3..774ccb2 100644
--- a/net/mac80211/main.c
+++ b/net/mac80211/main.c
@@ -764,6 +764,11 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
local->hw.offchannel_tx_hw_queue >= local->hw.queues))
return -EINVAL;
+ if ((hw->wiphy->features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH) &&
+ (!local->ops->tdls_channel_switch ||
+ !local->ops->tdls_cancel_channel_switch))
+ return -EOPNOTSUPP;
+
#ifdef CONFIG_PM
if (hw->wiphy->wowlan && (!local->ops->suspend || !local->ops->resume))
return -EINVAL;
diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c
index 9737251..86ca627 100644
--- a/net/mac80211/sta_info.c
+++ b/net/mac80211/sta_info.c
@@ -847,6 +847,15 @@ static int __must_check __sta_info_destroy_part1(struct sta_info *sta)
if (WARN_ON(ret))
return ret;
+ /*
+ * for TDLS peers, make sure to return to the base channel before
+ * removal.
+ */
+ if (test_sta_flag(sta, WLAN_STA_TDLS_OFF_CHANNEL)) {
+ drv_tdls_cancel_channel_switch(local, sdata, &sta->sta);
+ clear_sta_flag(sta, WLAN_STA_TDLS_OFF_CHANNEL);
+ }
+
list_del_rcu(&sta->list);
drv_sta_pre_rcu_remove(local, sta->sdata, sta);
diff --git a/net/mac80211/sta_info.h b/net/mac80211/sta_info.h
index b6702c8..00f56eb 100644
--- a/net/mac80211/sta_info.h
+++ b/net/mac80211/sta_info.h
@@ -50,6 +50,8 @@
* @WLAN_STA_TDLS_INITIATOR: We are the initiator of the TDLS link with this
* station.
* @WLAN_STA_TDLS_CHAN_SWITCH: This TDLS peer supports TDLS channel-switching
+ * @WLAN_STA_TDLS_OFF_CHANNEL: The local STA is currently off-channel with this
+ * TDLS peer
* @WLAN_STA_UAPSD: Station requested unscheduled SP while driver was
* keeping station in power-save mode, reply when the driver
* unblocks the station.
@@ -80,6 +82,7 @@ enum ieee80211_sta_info_flags {
WLAN_STA_TDLS_PEER_AUTH,
WLAN_STA_TDLS_INITIATOR,
WLAN_STA_TDLS_CHAN_SWITCH,
+ WLAN_STA_TDLS_OFF_CHANNEL,
WLAN_STA_UAPSD,
WLAN_STA_SP,
WLAN_STA_4ADDR_EVENT,
diff --git a/net/mac80211/tdls.c b/net/mac80211/tdls.c
index fa141ae..358f9a4 100644
--- a/net/mac80211/tdls.c
+++ b/net/mac80211/tdls.c
@@ -449,6 +449,48 @@ ieee80211_tdls_add_setup_cfm_ies(struct ieee80211_sub_if_data *sdata,
ieee80211_tdls_add_link_ie(sdata, skb, peer, initiator);
}
+static void
+ieee80211_tdls_add_chan_switch_req_ies(struct ieee80211_sub_if_data *sdata,
+ struct sk_buff *skb, const u8 *peer,
+ bool initiator, const u8 *extra_ies,
+ size_t extra_ies_len, u8 oper_class,
+ struct cfg80211_chan_def *chandef)
+{
+ struct ieee80211_tdls_data *tf;
+ size_t offset = 0, noffset;
+ u8 *pos;
+
+ if (WARN_ON_ONCE(!chandef))
+ return;
+
+ tf = (void *)skb->data;
+ tf->u.chan_switch_req.target_channel =
+ ieee80211_frequency_to_channel(chandef->chan->center_freq);
+ tf->u.chan_switch_req.oper_class = oper_class;
+
+ if (extra_ies_len) {
+ static const u8 before_lnkie[] = {
+ WLAN_EID_SECONDARY_CHANNEL_OFFSET,
+ };
+ noffset = ieee80211_ie_split(extra_ies, extra_ies_len,
+ before_lnkie,
+ ARRAY_SIZE(before_lnkie),
+ offset);
+ pos = skb_put(skb, noffset - offset);
+ memcpy(pos, extra_ies + offset, noffset - offset);
+ offset = noffset;
+ }
+
+ ieee80211_tdls_add_link_ie(sdata, skb, peer, initiator);
+
+ /* add any remaining IEs */
+ if (extra_ies_len) {
+ noffset = extra_ies_len;
+ pos = skb_put(skb, noffset - offset);
+ memcpy(pos, extra_ies + offset, noffset - offset);
+ }
+}
+
static void ieee80211_tdls_add_ies(struct ieee80211_sub_if_data *sdata,
struct sk_buff *skb, const u8 *peer,
u8 action_code, u16 status_code,
@@ -481,6 +523,12 @@ static void ieee80211_tdls_add_ies(struct ieee80211_sub_if_data *sdata,
if (status_code == 0 || action_code == WLAN_TDLS_TEARDOWN)
ieee80211_tdls_add_link_ie(sdata, skb, peer, initiator);
break;
+ case WLAN_TDLS_CHANNEL_SWITCH_REQUEST:
+ ieee80211_tdls_add_chan_switch_req_ies(sdata, skb, peer,
+ initiator, extra_ies,
+ extra_ies_len,
+ oper_class, chandef);
+ break;
}
}
@@ -547,6 +595,12 @@ ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev,
skb_put(skb, sizeof(tf->u.discover_req));
tf->u.discover_req.dialog_token = dialog_token;
break;
+ case WLAN_TDLS_CHANNEL_SWITCH_REQUEST:
+ tf->category = WLAN_CATEGORY_TDLS;
+ tf->action_code = WLAN_TDLS_CHANNEL_SWITCH_REQUEST;
+
+ skb_put(skb, sizeof(tf->u.chan_switch_req));
+ break;
default:
return -EINVAL;
}
@@ -626,6 +680,7 @@ ieee80211_tdls_build_mgmt_packet_data(struct ieee80211_sub_if_data *sdata,
case WLAN_TDLS_SETUP_CONFIRM:
case WLAN_TDLS_TEARDOWN:
case WLAN_TDLS_DISCOVERY_REQUEST:
+ case WLAN_TDLS_CHANNEL_SWITCH_REQUEST:
ret = ieee80211_prep_tdls_encap_data(local->hw.wiphy,
sdata->dev, peer,
action_code, dialog_token,
@@ -699,6 +754,7 @@ ieee80211_tdls_prep_mgmt_packet(struct wiphy *wiphy, struct net_device *dev,
initiator = false;
break;
case WLAN_TDLS_TEARDOWN:
+ case WLAN_TDLS_CHANNEL_SWITCH_REQUEST:
/* any value is ok */
break;
default:
@@ -1046,3 +1102,181 @@ void ieee80211_tdls_oper_request(struct ieee80211_vif *vif, const u8 *peer,
cfg80211_tdls_oper_request(sdata->dev, peer, oper, reason_code, gfp);
}
EXPORT_SYMBOL(ieee80211_tdls_oper_request);
+
+static void
+iee80211_tdls_add_ch_switch_timing(u8 *buf, u16 switch_time, u16 switch_timeout)
+{
+ struct ieee80211_ch_switch_timing *ch_sw;
+
+ *buf++ = WLAN_EID_CHAN_SWITCH_TIMING;
+ *buf++ = sizeof(struct ieee80211_ch_switch_timing);
+
+ ch_sw = (void *)buf;
+ ch_sw->switch_time = cpu_to_le16(switch_time);
+ ch_sw->switch_timeout = cpu_to_le16(switch_timeout);
+}
+
+/* find switch timing IE in SKB ready for Tx */
+static const u8 *ieee80211_tdls_find_sw_timing_ie(struct sk_buff *skb)
+{
+ struct ieee80211_tdls_data *tf;
+ const u8 *ie_start;
+
+ /*
+ * Get the offset for the new location of the switch timing IE.
+ * The SKB network header will now point to the "payload_type"
+ * element of the TDLS data frame struct.
+ */
+ tf = container_of(skb->data + skb_network_offset(skb),
+ struct ieee80211_tdls_data, payload_type);
+ ie_start = tf->u.chan_switch_req.variable;
+ return cfg80211_find_ie(WLAN_EID_CHAN_SWITCH_TIMING, ie_start,
+ skb->len - (ie_start - skb->data));
+}
+
+static struct sk_buff *
+ieee80211_tdls_ch_sw_tmpl_get(struct sta_info *sta, u8 oper_class,
+ struct cfg80211_chan_def *chandef,
+ u32 *ch_sw_tm_ie_offset)
+{
+ struct ieee80211_sub_if_data *sdata = sta->sdata;
+ u8 extra_ies[2 + sizeof(struct ieee80211_sec_chan_offs_ie) +
+ 2 + sizeof(struct ieee80211_ch_switch_timing)];
+ int extra_ies_len = 2 + sizeof(struct ieee80211_ch_switch_timing);
+ u8 *pos = extra_ies;
+ struct sk_buff *skb;
+
+ /*
+ * if chandef points to a wide channel add a Secondary-Channel
+ * Offset information element
+ */
+ if (chandef->width == NL80211_CHAN_WIDTH_40) {
+ struct ieee80211_sec_chan_offs_ie *sec_chan_ie;
+ bool ht40plus;
+
+ *pos++ = WLAN_EID_SECONDARY_CHANNEL_OFFSET;
+ *pos++ = sizeof(*sec_chan_ie);
+ sec_chan_ie = (void *)pos;
+
+ ht40plus = cfg80211_get_chandef_type(chandef) ==
+ NL80211_CHAN_HT40PLUS;
+ sec_chan_ie->sec_chan_offs = ht40plus ?
+ IEEE80211_HT_PARAM_CHA_SEC_ABOVE :
+ IEEE80211_HT_PARAM_CHA_SEC_BELOW;
+ pos += sizeof(*sec_chan_ie);
+
+ extra_ies_len += 2 + sizeof(struct ieee80211_sec_chan_offs_ie);
+ }
+
+ /* just set the values to 0, this is a template */
+ iee80211_tdls_add_ch_switch_timing(pos, 0, 0);
+
+ skb = ieee80211_tdls_build_mgmt_packet_data(sdata, sta->sta.addr,
+ WLAN_TDLS_CHANNEL_SWITCH_REQUEST,
+ 0, 0, !sta->sta.tdls_initiator,
+ extra_ies, extra_ies_len,
+ oper_class, chandef);
+ if (!skb)
+ return NULL;
+
+ skb = ieee80211_build_data_template(sdata, skb, 0);
+ if (IS_ERR(skb)) {
+ tdls_dbg(sdata, "Failed building TDLS channel switch frame\n");
+ return NULL;
+ }
+
+ if (ch_sw_tm_ie_offset) {
+ const u8 *tm_ie = ieee80211_tdls_find_sw_timing_ie(skb);
+
+ if (!tm_ie) {
+ tdls_dbg(sdata, "No switch timing IE in TDLS switch\n");
+ dev_kfree_skb_any(skb);
+ return NULL;
+ }
+
+ *ch_sw_tm_ie_offset = tm_ie - skb->data;
+ }
+
+ tdls_dbg(sdata,
+ "TDLS channel switch request template for %pM ch %d width %d\n",
+ sta->sta.addr, chandef->chan->center_freq, chandef->width);
+ return skb;
+}
+
+int
+ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev,
+ const u8 *addr, 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 sta_info *sta;
+ struct sk_buff *skb = NULL;
+ u32 ch_sw_tm_ie;
+ int ret;
+
+ mutex_lock(&local->sta_mtx);
+ sta = sta_info_get(sdata, addr);
+ if (!sta) {
+ tdls_dbg(sdata,
+ "Invalid TDLS peer %pM for channel switch request\n",
+ addr);
+ ret = -ENOENT;
+ goto out;
+ }
+
+ if (!test_sta_flag(sta, WLAN_STA_TDLS_CHAN_SWITCH)) {
+ tdls_dbg(sdata, "TDLS channel switch unsupported by %pM\n",
+ addr);
+ ret = -ENOTSUPP;
+ goto out;
+ }
+
+ skb = ieee80211_tdls_ch_sw_tmpl_get(sta, oper_class, chandef,
+ &ch_sw_tm_ie);
+ if (!skb) {
+ ret = -ENOENT;
+ goto out;
+ }
+
+ ret = drv_tdls_channel_switch(local, sdata, &sta->sta, oper_class,
+ chandef, skb, ch_sw_tm_ie);
+ if (!ret)
+ set_sta_flag(sta, WLAN_STA_TDLS_OFF_CHANNEL);
+
+out:
+ mutex_unlock(&local->sta_mtx);
+ dev_kfree_skb_any(skb);
+ return ret;
+}
+
+void
+ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy,
+ struct net_device *dev,
+ const u8 *addr)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct ieee80211_local *local = sdata->local;
+ struct sta_info *sta;
+
+ mutex_lock(&local->sta_mtx);
+ sta = sta_info_get(sdata, addr);
+ if (!sta) {
+ tdls_dbg(sdata,
+ "Invalid TDLS peer %pM for channel switch cancel\n",
+ addr);
+ goto out;
+ }
+
+ if (!test_sta_flag(sta, WLAN_STA_TDLS_OFF_CHANNEL)) {
+ tdls_dbg(sdata, "TDLS channel switch not initiated by %pM\n",
+ addr);
+ goto out;
+ }
+
+ drv_tdls_cancel_channel_switch(local, sdata, &sta->sta);
+ clear_sta_flag(sta, WLAN_STA_TDLS_OFF_CHANNEL);
+
+out:
+ mutex_unlock(&local->sta_mtx);
+}
diff --git a/net/mac80211/trace.h b/net/mac80211/trace.h
index 809a498..12c5220 100644
--- a/net/mac80211/trace.h
+++ b/net/mac80211/trace.h
@@ -2194,6 +2194,63 @@ TRACE_EVENT(drv_get_txpower,
)
);
+TRACE_EVENT(drv_tdls_channel_switch,
+ TP_PROTO(struct ieee80211_local *local,
+ struct ieee80211_sub_if_data *sdata,
+ struct ieee80211_sta *sta, u8 oper_class,
+ struct cfg80211_chan_def *chandef),
+
+ TP_ARGS(local, sdata, sta, oper_class, chandef),
+
+ TP_STRUCT__entry(
+ LOCAL_ENTRY
+ VIF_ENTRY
+ STA_ENTRY
+ __field(u8, oper_class)
+ CHANDEF_ENTRY
+ ),
+
+ TP_fast_assign(
+ LOCAL_ASSIGN;
+ VIF_ASSIGN;
+ STA_ASSIGN;
+ __entry->oper_class = oper_class;
+ CHANDEF_ASSIGN(chandef)
+ ),
+
+ TP_printk(
+ LOCAL_PR_FMT VIF_PR_FMT " tdls channel switch to"
+ CHANDEF_PR_FMT " oper_class:%d " STA_PR_FMT,
+ LOCAL_PR_ARG, VIF_PR_ARG, CHANDEF_PR_ARG, __entry->oper_class,
+ STA_PR_ARG
+ )
+);
+
+TRACE_EVENT(drv_tdls_cancel_channel_switch,
+ TP_PROTO(struct ieee80211_local *local,
+ struct ieee80211_sub_if_data *sdata,
+ struct ieee80211_sta *sta),
+
+ TP_ARGS(local, sdata, sta),
+
+ TP_STRUCT__entry(
+ LOCAL_ENTRY
+ VIF_ENTRY
+ STA_ENTRY
+ ),
+
+ TP_fast_assign(
+ LOCAL_ASSIGN;
+ VIF_ASSIGN;
+ STA_ASSIGN;
+ ),
+
+ TP_printk(
+ LOCAL_PR_FMT VIF_PR_FMT
+ " tdls cancel channel switch with " STA_PR_FMT,
+ LOCAL_PR_ARG, VIF_PR_ARG, STA_PR_ARG
+ )
+);
#ifdef CONFIG_MAC80211_MESSAGE_TRACING
#undef TRACE_SYSTEM
--
1.9.1
--
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