mac80211: support GTK rekey offload

This adds the necessary mac80211 APIs to support
GTK rekey offload, mirroring the functionality
from cfg80211.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 49 insertions, 0 deletions

diff --git a/net/mac80211/driver-trace.h b/net/mac80211/driver-trace.h
index 3cb6795e926d..31a9dfa81f65 100644
--- a/net/mac80211/driver-trace.h
+++ b/net/mac80211/driver-trace.h
@@ -1024,6 +1024,34 @@ TRACE_EVENT(drv_set_bitrate_mask,
         )
 );
 
+TRACE_EVENT(drv_set_rekey_data,
+        TP_PROTO(struct ieee80211_local *local,
+                 struct ieee80211_sub_if_data *sdata,
+                 struct cfg80211_gtk_rekey_data *data),
+
+        TP_ARGS(local, sdata, data),
+
+        TP_STRUCT__entry(
+                LOCAL_ENTRY
+                VIF_ENTRY
+                __array(u8, kek, NL80211_KEK_LEN)
+                __array(u8, kck, NL80211_KCK_LEN)
+                __array(u8, replay_ctr, NL80211_REPLAY_CTR_LEN)
+        ),
+
+        TP_fast_assign(
+                LOCAL_ASSIGN;
+                VIF_ASSIGN;
+                memcpy(__entry->kek, data->kek, NL80211_KEK_LEN);
+                memcpy(__entry->kck, data->kck, NL80211_KCK_LEN);
+                memcpy(__entry->replay_ctr, data->replay_ctr,
+                       NL80211_REPLAY_CTR_LEN);
+        ),
+
+        TP_printk(LOCAL_PR_FMT VIF_PR_FMT,
+                  LOCAL_PR_ARG, VIF_PR_ARG)
+);
+
 /*
  * Tracing for API calls that drivers call.
  */
@@ -1293,6 +1321,27 @@ DEFINE_EVENT(local_only_evt, api_remain_on_channel_expired,
         TP_ARGS(local)
 );
 
+TRACE_EVENT(api_gtk_rekey_notify,
+        TP_PROTO(struct ieee80211_sub_if_data *sdata,
+                 const u8 *bssid, const u8 *replay_ctr),
+
+        TP_ARGS(sdata, bssid, replay_ctr),
+
+        TP_STRUCT__entry(
+                VIF_ENTRY
+                __array(u8, bssid, ETH_ALEN)
+                __array(u8, replay_ctr, NL80211_REPLAY_CTR_LEN)
+        ),
+
+        TP_fast_assign(
+                VIF_ASSIGN;
+                memcpy(__entry->bssid, bssid, ETH_ALEN);
+                memcpy(__entry->replay_ctr, replay_ctr, NL80211_REPLAY_CTR_LEN);
+        ),
+
+        TP_printk(VIF_PR_FMT, VIF_PR_ARG)
+);
+
 /*
  * Tracing for internal functions
  * (which may also be called in response to driver calls)