wifi: cfg80211/mac80211: Add support to get radio index

Currently, per-radio attributes are set on per-phy basis, i.e., all the
radios present in a wiphy will take attributes values sent from user. But
each radio in a wiphy can get different values from userspace based on
its requirement.

To extend support to set per-radio attributes, add support to get radio
index from userspace. Add an NL attribute - NL80211_ATTR_WIPHY_RADIO_INDEX,
to get user specified radio index for which attributes should be changed.
Pass this to individual drivers, so that the drivers can use this radio
index to change per-radio attributes when necessary. Currently, per-radio
attributes identified are:
NL80211_ATTR_WIPHY_TX_POWER_LEVEL
NL80211_ATTR_WIPHY_ANTENNA_TX
NL80211_ATTR_WIPHY_ANTENNA_RX
NL80211_ATTR_WIPHY_RETRY_SHORT
NL80211_ATTR_WIPHY_RETRY_LONG
NL80211_ATTR_WIPHY_FRAG_THRESHOLD
NL80211_ATTR_WIPHY_RTS_THRESHOLD
NL80211_ATTR_WIPHY_COVERAGE_CLASS
NL80211_ATTR_TXQ_LIMIT
NL80211_ATTR_TXQ_MEMORY_LIMIT
NL80211_ATTR_TXQ_QUANTUM

By default, the radio index is set to -1. This means the attribute should
be treated as a global configuration. If the user has not specified any
index, then the radio index passed to individual drivers would be -1. This
would indicate that the attribute applies to all radios in that wiphy.

Signed-off-by: Roopni Devanathan <quic_rdevanat@quicinc.com>
Link: https://patch.msgid.link/20250615082312.619639-2-quic_rdevanat@quicinc.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

1 files changed, 61 insertions, 17 deletions

diff --git a/net/mac80211/trace.h b/net/mac80211/trace.h
index 8215ca58ce5e..0bfbce157486 100644
--- a/net/mac80211/trace.h
+++ b/net/mac80211/trace.h
@@ -384,12 +384,14 @@ DEFINE_EVENT(local_sdata_addr_evt, drv_remove_interface,
 
 TRACE_EVENT(drv_config,
 	TP_PROTO(struct ieee80211_local *local,
+		 int radio_idx,
 		 u32 changed),
 
-	TP_ARGS(local, changed),
+	TP_ARGS(local, radio_idx, changed),
 
 	TP_STRUCT__entry(
 		LOCAL_ENTRY
+		__field(int, radio_idx)
 		__field(u32, changed)
 		__field(u32, flags)
 		__field(int, power_level)
@@ -403,6 +405,7 @@ TRACE_EVENT(drv_config,
 
 	TP_fast_assign(
 		LOCAL_ASSIGN;
+		__entry->radio_idx = radio_idx;
 		__entry->changed = changed;
 		__entry->flags = local->hw.conf.flags;
 		__entry->power_level = local->hw.conf.power_level;
@@ -417,8 +420,8 @@ TRACE_EVENT(drv_config,
 	),
 
 	TP_printk(
-		LOCAL_PR_FMT " ch:%#x" CHANDEF_PR_FMT,
-		LOCAL_PR_ARG, __entry->changed, CHANDEF_PR_ARG
+		LOCAL_PR_FMT " radio_idx:%d ch:%#x" CHANDEF_PR_FMT,
+		LOCAL_PR_ARG, __entry->radio_idx, __entry->changed, CHANDEF_PR_ARG
 	)
 );
 
@@ -818,34 +821,71 @@ TRACE_EVENT(drv_get_key_seq,
 	)
 );
 
-DEFINE_EVENT(local_u32_evt, drv_set_frag_threshold,
-	TP_PROTO(struct ieee80211_local *local, u32 value),
-	TP_ARGS(local, value)
+TRACE_EVENT(drv_set_frag_threshold,
+	TP_PROTO(struct ieee80211_local *local, int radio_idx, u32 value),
+
+	TP_ARGS(local, radio_idx, value),
+
+	TP_STRUCT__entry(
+		LOCAL_ENTRY
+		__field(int, radio_idx)
+		__field(u32, value)
+	),
+
+	TP_fast_assign(
+		LOCAL_ASSIGN;
+		__entry->radio_idx = radio_idx;
+		__entry->value = value;
+	),
+
+	TP_printk(
+		LOCAL_PR_FMT " radio_id:%d value:%u",
+		LOCAL_PR_ARG, __entry->radio_idx, __entry->value
+	)
 );
 
-DEFINE_EVENT(local_u32_evt, drv_set_rts_threshold,
-	TP_PROTO(struct ieee80211_local *local, u32 value),
-	TP_ARGS(local, value)
+TRACE_EVENT(drv_set_rts_threshold,
+	TP_PROTO(struct ieee80211_local *local, int radio_idx, u32 value),
+
+	TP_ARGS(local, radio_idx, value),
+
+	TP_STRUCT__entry(
+		LOCAL_ENTRY
+		__field(int, radio_idx)
+		__field(u32, value)
+	),
+	TP_fast_assign(
+		LOCAL_ASSIGN;
+		__entry->radio_idx = radio_idx;
+		__entry->value = value;
+	),
+
+	TP_printk(
+		LOCAL_PR_FMT " radio_id:%d value:%u",
+		LOCAL_PR_ARG, __entry->radio_idx, __entry->value
+	)
 );
 
 TRACE_EVENT(drv_set_coverage_class,
-	TP_PROTO(struct ieee80211_local *local, s16 value),
+	TP_PROTO(struct ieee80211_local *local, int radio_idx, s16 value),
 
-	TP_ARGS(local, value),
+	TP_ARGS(local, radio_idx, value),
 
 	TP_STRUCT__entry(
 		LOCAL_ENTRY
+		__field(int, radio_idx)
 		__field(s16, value)
 	),
 
 	TP_fast_assign(
 		LOCAL_ASSIGN;
+		__entry->radio_idx = radio_idx;
 		__entry->value = value;
 	),
 
 	TP_printk(
-		LOCAL_PR_FMT " value:%d",
-		LOCAL_PR_ARG, __entry->value
+		LOCAL_PR_FMT " radio_id:%d value:%d",
+		LOCAL_PR_ARG, __entry->radio_idx, __entry->value
 	)
 );
 
@@ -1318,12 +1358,14 @@ TRACE_EVENT(drv_set_antenna,
 );
 
 TRACE_EVENT(drv_get_antenna,
-	TP_PROTO(struct ieee80211_local *local, u32 tx_ant, u32 rx_ant, int ret),
+	TP_PROTO(struct ieee80211_local *local, int radio_idx, u32 tx_ant,
+		 u32 rx_ant, int ret),
 
-	TP_ARGS(local, tx_ant, rx_ant, ret),
+	TP_ARGS(local, radio_idx, tx_ant, rx_ant, ret),
 
 	TP_STRUCT__entry(
 		LOCAL_ENTRY
+		__field(int, radio_idx)
 		__field(u32, tx_ant)
 		__field(u32, rx_ant)
 		__field(int, ret)
@@ -1331,14 +1373,16 @@ TRACE_EVENT(drv_get_antenna,
 
 	TP_fast_assign(
 		LOCAL_ASSIGN;
+		__entry->radio_idx = radio_idx;
 		__entry->tx_ant = tx_ant;
 		__entry->rx_ant = rx_ant;
 		__entry->ret = ret;
 	),
 
 	TP_printk(
-		LOCAL_PR_FMT " tx_ant:%d rx_ant:%d ret:%d",
-		LOCAL_PR_ARG, __entry->tx_ant, __entry->rx_ant, __entry->ret
+		LOCAL_PR_FMT " radio_idx:%d tx_ant:%d rx_ant:%d ret:%d",
+		LOCAL_PR_ARG, __entry->radio_idx, __entry->tx_ant,
+		__entry->rx_ant, __entry->ret
 	)
 );