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-rw-r--r--net/mac80211/driver-ops.h11
-rw-r--r--net/mac80211/driver-trace.h49
-rw-r--r--net/mac80211/ieee80211_i.h3
-rw-r--r--net/mac80211/mlme.c59
-rw-r--r--net/mac80211/rx.c6
-rw-r--r--net/mac80211/work.c27
6 files changed, 147 insertions, 8 deletions
diff --git a/net/mac80211/driver-ops.h b/net/mac80211/driver-ops.h
index ee8b63f92f71..4f2271316650 100644
--- a/net/mac80211/driver-ops.h
+++ b/net/mac80211/driver-ops.h
@@ -371,4 +371,15 @@ static inline void drv_flush(struct ieee80211_local *local, bool drop)
if (local->ops->flush)
local->ops->flush(&local->hw, drop);
}
+
+static inline void drv_channel_switch(struct ieee80211_local *local,
+ struct ieee80211_channel_switch *ch_switch)
+{
+ might_sleep();
+
+ local->ops->channel_switch(&local->hw, ch_switch);
+
+ trace_drv_channel_switch(local, ch_switch);
+}
+
#endif /* __MAC80211_DRIVER_OPS */
diff --git a/net/mac80211/driver-trace.h b/net/mac80211/driver-trace.h
index ce734b58d07a..6a9b2342a9c2 100644
--- a/net/mac80211/driver-trace.h
+++ b/net/mac80211/driver-trace.h
@@ -774,6 +774,34 @@ TRACE_EVENT(drv_flush,
)
);
+TRACE_EVENT(drv_channel_switch,
+ TP_PROTO(struct ieee80211_local *local,
+ struct ieee80211_channel_switch *ch_switch),
+
+ TP_ARGS(local, ch_switch),
+
+ TP_STRUCT__entry(
+ LOCAL_ENTRY
+ __field(u64, timestamp)
+ __field(bool, block_tx)
+ __field(u16, freq)
+ __field(u8, count)
+ ),
+
+ TP_fast_assign(
+ LOCAL_ASSIGN;
+ __entry->timestamp = ch_switch->timestamp;
+ __entry->block_tx = ch_switch->block_tx;
+ __entry->freq = ch_switch->channel->center_freq;
+ __entry->count = ch_switch->count;
+ ),
+
+ TP_printk(
+ LOCAL_PR_FMT " new freq:%u count:%d",
+ LOCAL_PR_ARG, __entry->freq, __entry->count
+ )
+);
+
/*
* Tracing for API calls that drivers call.
*/
@@ -992,6 +1020,27 @@ TRACE_EVENT(api_sta_block_awake,
)
);
+TRACE_EVENT(api_chswitch_done,
+ TP_PROTO(struct ieee80211_sub_if_data *sdata, bool success),
+
+ TP_ARGS(sdata, success),
+
+ TP_STRUCT__entry(
+ VIF_ENTRY
+ __field(bool, success)
+ ),
+
+ TP_fast_assign(
+ VIF_ASSIGN;
+ __entry->success = success;
+ ),
+
+ TP_printk(
+ VIF_PR_FMT " success=%d",
+ VIF_PR_ARG, __entry->success
+ )
+);
+
/*
* Tracing for internal functions
* (which may also be called in response to driver calls)
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 7ef7798d04cd..1a9e2da37a93 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -998,7 +998,8 @@ int ieee80211_max_network_latency(struct notifier_block *nb,
unsigned long data, void *dummy);
void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
struct ieee80211_channel_sw_ie *sw_elem,
- struct ieee80211_bss *bss);
+ struct ieee80211_bss *bss,
+ u64 timestamp);
void ieee80211_sta_quiesce(struct ieee80211_sub_if_data *sdata);
void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 3093e46273c3..c6c1f49cc456 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -342,7 +342,11 @@ static void ieee80211_chswitch_work(struct work_struct *work)
goto out;
sdata->local->oper_channel = sdata->local->csa_channel;
- ieee80211_hw_config(sdata->local, IEEE80211_CONF_CHANGE_CHANNEL);
+ if (!sdata->local->ops->channel_switch) {
+ /* call "hw_config" only if doing sw channel switch */
+ ieee80211_hw_config(sdata->local,
+ IEEE80211_CONF_CHANGE_CHANNEL);
+ }
/* XXX: shouldn't really modify cfg80211-owned data! */
ifmgd->associated->channel = sdata->local->oper_channel;
@@ -354,6 +358,29 @@ static void ieee80211_chswitch_work(struct work_struct *work)
mutex_unlock(&ifmgd->mtx);
}
+void ieee80211_chswitch_done(struct ieee80211_vif *vif, bool success)
+{
+ struct ieee80211_sub_if_data *sdata;
+ struct ieee80211_if_managed *ifmgd;
+
+ sdata = vif_to_sdata(vif);
+ ifmgd = &sdata->u.mgd;
+
+ trace_api_chswitch_done(sdata, success);
+ if (!success) {
+ /*
+ * If the channel switch was not successful, stay
+ * around on the old channel. We currently lack
+ * good handling of this situation, possibly we
+ * should just drop the association.
+ */
+ sdata->local->csa_channel = sdata->local->oper_channel;
+ }
+
+ ieee80211_queue_work(&sdata->local->hw, &ifmgd->chswitch_work);
+}
+EXPORT_SYMBOL(ieee80211_chswitch_done);
+
static void ieee80211_chswitch_timer(unsigned long data)
{
struct ieee80211_sub_if_data *sdata =
@@ -370,7 +397,8 @@ static void ieee80211_chswitch_timer(unsigned long data)
void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
struct ieee80211_channel_sw_ie *sw_elem,
- struct ieee80211_bss *bss)
+ struct ieee80211_bss *bss,
+ u64 timestamp)
{
struct cfg80211_bss *cbss =
container_of((void *)bss, struct cfg80211_bss, priv);
@@ -398,10 +426,29 @@ void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
sdata->local->csa_channel = new_ch;
+ if (sdata->local->ops->channel_switch) {
+ /* use driver's channel switch callback */
+ struct ieee80211_channel_switch ch_switch;
+ memset(&ch_switch, 0, sizeof(ch_switch));
+ ch_switch.timestamp = timestamp;
+ if (sw_elem->mode) {
+ ch_switch.block_tx = true;
+ ieee80211_stop_queues_by_reason(&sdata->local->hw,
+ IEEE80211_QUEUE_STOP_REASON_CSA);
+ }
+ ch_switch.channel = new_ch;
+ ch_switch.count = sw_elem->count;
+ ifmgd->flags |= IEEE80211_STA_CSA_RECEIVED;
+ drv_channel_switch(sdata->local, &ch_switch);
+ return;
+ }
+
+ /* channel switch handled in software */
if (sw_elem->count <= 1) {
ieee80211_queue_work(&sdata->local->hw, &ifmgd->chswitch_work);
} else {
- ieee80211_stop_queues_by_reason(&sdata->local->hw,
+ if (sw_elem->mode)
+ ieee80211_stop_queues_by_reason(&sdata->local->hw,
IEEE80211_QUEUE_STOP_REASON_CSA);
ifmgd->flags |= IEEE80211_STA_CSA_RECEIVED;
mod_timer(&ifmgd->chswitch_timer,
@@ -1317,7 +1364,8 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
ETH_ALEN) == 0)) {
struct ieee80211_channel_sw_ie *sw_elem =
(struct ieee80211_channel_sw_ie *)elems->ch_switch_elem;
- ieee80211_sta_process_chanswitch(sdata, sw_elem, bss);
+ ieee80211_sta_process_chanswitch(sdata, sw_elem,
+ bss, rx_status->mactime);
}
}
@@ -1649,7 +1697,8 @@ static void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
ieee80211_sta_process_chanswitch(sdata,
&mgmt->u.action.u.chan_switch.sw_elem,
- (void *)ifmgd->associated->priv);
+ (void *)ifmgd->associated->priv,
+ rx_status->mactime);
break;
}
mutex_unlock(&ifmgd->mtx);
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 9a08f2c446c6..6e2a7bcd8cb8 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -1253,6 +1253,12 @@ ieee80211_rx_h_defragment(struct ieee80211_rx_data *rx)
if (skb_linearize(rx->skb))
return RX_DROP_UNUSABLE;
+ /*
+ * skb_linearize() might change the skb->data and
+ * previously cached variables (in this case, hdr) need to
+ * be refreshed with the new data.
+ */
+ hdr = (struct ieee80211_hdr *)rx->skb->data;
seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
if (frag == 0) {
diff --git a/net/mac80211/work.c b/net/mac80211/work.c
index 3dd07600199d..be3d4a698692 100644
--- a/net/mac80211/work.c
+++ b/net/mac80211/work.c
@@ -33,6 +33,7 @@
#define IEEE80211_MAX_PROBE_TRIES 5
enum work_action {
+ WORK_ACT_MISMATCH,
WORK_ACT_NONE,
WORK_ACT_TIMEOUT,
WORK_ACT_DONE,
@@ -585,7 +586,7 @@ ieee80211_rx_mgmt_auth(struct ieee80211_work *wk,
u16 auth_alg, auth_transaction, status_code;
if (wk->type != IEEE80211_WORK_AUTH)
- return WORK_ACT_NONE;
+ return WORK_ACT_MISMATCH;
if (len < 24 + 6)
return WORK_ACT_NONE;
@@ -636,6 +637,9 @@ ieee80211_rx_mgmt_assoc_resp(struct ieee80211_work *wk,
struct ieee802_11_elems elems;
u8 *pos;
+ if (wk->type != IEEE80211_WORK_ASSOC)
+ return WORK_ACT_MISMATCH;
+
/*
* AssocResp and ReassocResp have identical structure, so process both
* of them in this function.
@@ -691,6 +695,12 @@ ieee80211_rx_mgmt_probe_resp(struct ieee80211_work *wk,
ASSERT_WORK_MTX(local);
+ if (wk->type != IEEE80211_WORK_DIRECT_PROBE)
+ return WORK_ACT_MISMATCH;
+
+ if (len < 24 + 12)
+ return WORK_ACT_NONE;
+
baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt;
if (baselen > len)
return WORK_ACT_NONE;
@@ -705,7 +715,7 @@ static void ieee80211_work_rx_queued_mgmt(struct ieee80211_local *local,
struct ieee80211_rx_status *rx_status;
struct ieee80211_mgmt *mgmt;
struct ieee80211_work *wk;
- enum work_action rma = WORK_ACT_NONE;
+ enum work_action rma;
u16 fc;
rx_status = (struct ieee80211_rx_status *) skb->cb;
@@ -752,7 +762,17 @@ static void ieee80211_work_rx_queued_mgmt(struct ieee80211_local *local,
break;
default:
WARN_ON(1);
+ rma = WORK_ACT_NONE;
}
+
+ /*
+ * We've either received an unexpected frame, or we have
+ * multiple work items and need to match the frame to the
+ * right one.
+ */
+ if (rma == WORK_ACT_MISMATCH)
+ continue;
+
/*
* We've processed this frame for that work, so it can't
* belong to another work struct.
@@ -762,6 +782,9 @@ static void ieee80211_work_rx_queued_mgmt(struct ieee80211_local *local,
}
switch (rma) {
+ case WORK_ACT_MISMATCH:
+ /* ignore this unmatched frame */
+ break;
case WORK_ACT_NONE:
break;
case WORK_ACT_DONE:
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-30 22:06:43 +0000