From: Johannes Berg <johannes.berg@xxxxxxxxx>
Add more information to the assoc trace event so we can see
more precisely what's going on and what options were used.
Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>
Signed-off-by: Luca Coelho <luciano.coelho@xxxxxxxxx>
---
net/wireless/rdev-ops.h | 12 +++++++++++-
net/wireless/trace.h | 36 ++++++++++++++++++++++++++++++++++--
2 files changed, 45 insertions(+), 3 deletions(-)
diff --git a/net/wireless/rdev-ops.h b/net/wireless/rdev-ops.h
index 8b1358d04ca2..b1d37f582dc6 100644
--- a/net/wireless/rdev-ops.h
+++ b/net/wireless/rdev-ops.h
@@ -464,8 +464,18 @@ static inline int rdev_assoc(struct cfg80211_registered_device *rdev,
struct net_device *dev,
struct cfg80211_assoc_request *req)
{
+ const struct cfg80211_bss_ies *bss_ies;
int ret;
- trace_rdev_assoc(&rdev->wiphy, dev, req);
+
+ /*
+ * Note: we might trace not exactly the data that's processed,
+ * due to races and the driver/mac80211 getting a newer copy.
+ */
+ rcu_read_lock();
+ bss_ies = rcu_dereference(req->bss->ies);
+ trace_rdev_assoc(&rdev->wiphy, dev, req, bss_ies);
+ rcu_read_unlock();
+
ret = rdev->ops->assoc(&rdev->wiphy, dev, req);
trace_rdev_return_int(&rdev->wiphy, ret);
return ret;
diff --git a/net/wireless/trace.h b/net/wireless/trace.h
index 76b777d5903f..440bce5f0274 100644
--- a/net/wireless/trace.h
+++ b/net/wireless/trace.h
@@ -1195,8 +1195,9 @@ TRACE_EVENT(rdev_auth,
TRACE_EVENT(rdev_assoc,
TP_PROTO(struct wiphy *wiphy, struct net_device *netdev,
- struct cfg80211_assoc_request *req),
- TP_ARGS(wiphy, netdev, req),
+ struct cfg80211_assoc_request *req,
+ const struct cfg80211_bss_ies *bss_ies),
+ TP_ARGS(wiphy, netdev, req, bss_ies),
TP_STRUCT__entry(
WIPHY_ENTRY
NETDEV_ENTRY
@@ -1204,6 +1205,17 @@ TRACE_EVENT(rdev_assoc,
MAC_ENTRY(prev_bssid)
__field(bool, use_mfp)
__field(u32, flags)
+ __dynamic_array(u8, bss_elements, bss_ies->len)
+ __field(bool, bss_elements_bcon)
+ __field(u64, bss_elements_tsf)
+ __dynamic_array(u8, elements, req->ie_len)
+ __array(u8, ht_capa, sizeof(struct ieee80211_ht_cap))
+ __array(u8, ht_capa_mask, sizeof(struct ieee80211_ht_cap))
+ __array(u8, vht_capa, sizeof(struct ieee80211_vht_cap))
+ __array(u8, vht_capa_mask, sizeof(struct ieee80211_vht_cap))
+ __dynamic_array(u8, fils_kek, req->fils_kek_len)
+ __dynamic_array(u8, fils_nonces,
+ req->fils_nonces ? 2 * FILS_NONCE_LEN : 0)
),
TP_fast_assign(
WIPHY_ASSIGN;
@@ -1215,6 +1227,26 @@ TRACE_EVENT(rdev_assoc,
MAC_ASSIGN(prev_bssid, req->prev_bssid);
__entry->use_mfp = req->use_mfp;
__entry->flags = req->flags;
+ if (bss_ies->len)
+ memcpy(__get_dynamic_array(bss_elements),
+ bss_ies->data, bss_ies->len);
+ __entry->bss_elements_bcon = bss_ies->from_beacon;
+ __entry->bss_elements_tsf = bss_ies->tsf;
+ if (req->ie)
+ memcpy(__get_dynamic_array(elements),
+ req->ie, req->ie_len);
+ memcpy(__entry->ht_capa, &req->ht_capa, sizeof(req->ht_capa));
+ memcpy(__entry->ht_capa_mask, &req->ht_capa_mask,
+ sizeof(req->ht_capa_mask));
+ memcpy(__entry->vht_capa, &req->vht_capa, sizeof(req->vht_capa));
+ memcpy(__entry->vht_capa_mask, &req->vht_capa_mask,
+ sizeof(req->vht_capa_mask));
+ if (req->fils_kek)
+ memcpy(__get_dynamic_array(fils_kek),
+ req->fils_kek, req->fils_kek_len);
+ if (req->fils_nonces)
+ memcpy(__get_dynamic_array(fils_nonces),
+ req->fils_nonces, 2 * FILS_NONCE_LEN);
),
TP_printk(WIPHY_PR_FMT ", " NETDEV_PR_FMT ", bssid: " MAC_PR_FMT
", previous bssid: " MAC_PR_FMT ", use mfp: %s, flags: %u",
--
2.32.0
