diff mbox series

wifi: ath12k: prepare vif config caching for MLO

Message ID 20240725094836.287448-1-quic_ramess@quicinc.com
State Superseded
Headers show
Series wifi: ath12k: prepare vif config caching for MLO | expand

Commit Message

Rameshkumar Sundaram July 25, 2024, 9:48 a.m. UTC 
Currently vif configuration cache pointers are placed in arvif and
caching is done whenever a link vif configuration is received before
driver created vdev for it (i.e. before channel is assigned),
this is possible because current code only uses default
link(ahvif->deflink) which is preallocated.

With MLO changes the ieee80211_vif drv priv is now ahvif and its
arvifs(link vif) other than deflink can be allocated dynamically
during channel assignment. Hence maintain link level cache
in ahvif and whenever channel is assigned for link vif and vdev is created,
flush the corresponding link vif cache from ahvif.

Current code uses cache of ATH12K_DEFAULT_LINK_ID(0) which is the cache
of ahvif->deflink.

Co-developed-by: Sriram R <quic_srirrama@quicinc.com>
Signed-off-by: Sriram R <quic_srirrama@quicinc.com>
Signed-off-by: Rameshkumar Sundaram <quic_ramess@quicinc.com>
---
Depends-on:
[PATCH v6 0/3] wifi: ath12k: prepare vif and sta datastructure
Link: https://lore.kernel.org/linux-wireless/20240711165511.3100433-4-quic_ramess@quicinc.com/
---
 drivers/net/wireless/ath/ath12k/core.h |  2 +-
 drivers/net/wireless/ath/ath12k/mac.c  | 39 +++++++++++++-------------
 2 files changed, 21 insertions(+), 20 deletions(-)


base-commit: db1ce56e6e1d395dd42a3cd6332a871d9be59c45
prerequisite-patch-id: f87638504028796f96a183930bf1799f55b9d268
prerequisite-patch-id: dc15d6df954760395ff72d9bcf14aace5adefbe7
prerequisite-patch-id: b43d0571ad6b42c80a16e65dc2c54657f3cd3dc5

Comments

Jeff Johnson July 25, 2024, 6:48 p.m. UTC | #1 
On 7/25/2024 2:48 AM, Rameshkumar Sundaram wrote:
> Currently vif configuration cache pointers are placed in arvif and
> caching is done whenever a link vif configuration is received before
> driver created vdev for it (i.e. before channel is assigned),
> this is possible because current code only uses default
> link(ahvif->deflink) which is preallocated.
> 
> With MLO changes the ieee80211_vif drv priv is now ahvif and its
> arvifs(link vif) other than deflink can be allocated dynamically
> during channel assignment. Hence maintain link level cache
> in ahvif and whenever channel is assigned for link vif and vdev is created,
> flush the corresponding link vif cache from ahvif.
> 
> Current code uses cache of ATH12K_DEFAULT_LINK_ID(0) which is the cache
> of ahvif->deflink.
> 
> Co-developed-by: Sriram R <quic_srirrama@quicinc.com>
> Signed-off-by: Sriram R <quic_srirrama@quicinc.com>
> Signed-off-by: Rameshkumar Sundaram <quic_ramess@quicinc.com>
Acked-by: Jeff Johnson <quic_jjohnson@quicinc.com>
diff mbox series

Patch

diff --git a/drivers/net/wireless/ath/ath12k/core.h b/drivers/net/wireless/ath/ath12k/core.h
index 13f8695c2337..5b880f6970a3 100644
--- a/drivers/net/wireless/ath/ath12k/core.h
+++ b/drivers/net/wireless/ath/ath12k/core.h
@@ -272,7 +272,6 @@  struct ath12k_link_vif {
 	u32 punct_bitmap;
 	u8 link_id;
 	struct ath12k_vif *ahvif;
-	struct ath12k_vif_cache *cache;
 	struct ath12k_rekey_data rekey_data;
 };
 
@@ -306,6 +305,7 @@  struct ath12k_vif {
 
 	struct ath12k_link_vif deflink;
 	struct ath12k_link_vif __rcu *link[IEEE80211_MLD_MAX_NUM_LINKS];
+	struct ath12k_vif_cache *cache[IEEE80211_MLD_MAX_NUM_LINKS];
 	/* indicates bitmap of link vif created in FW */
 	u16 links_map;
 };
diff --git a/drivers/net/wireless/ath/ath12k/mac.c b/drivers/net/wireless/ath/ath12k/mac.c
index b36b9250c924..4063787cdfcf 100644
--- a/drivers/net/wireless/ath/ath12k/mac.c
+++ b/drivers/net/wireless/ath/ath12k/mac.c
@@ -3455,18 +3455,19 @@  static void ath12k_mac_bss_info_changed(struct ath12k *ar,
 	}
 }
 
-static struct ath12k_vif_cache *ath12k_arvif_get_cache(struct ath12k_link_vif *arvif)
+static struct ath12k_vif_cache *ath12k_ahvif_get_link_cache(struct ath12k_vif *ahvif,
+							    u8 link_id)
 {
-	if (!arvif->cache)
-		arvif->cache = kzalloc(sizeof(*arvif->cache), GFP_KERNEL);
+	if (!ahvif->cache[link_id])
+		ahvif->cache[link_id] = kzalloc(sizeof(*ahvif->cache[0]), GFP_KERNEL);
 
-	return arvif->cache;
+	return ahvif->cache[link_id];
 }
 
-static void ath12k_arvif_put_cache(struct ath12k_link_vif *arvif)
+static void ath12k_ahvif_put_link_cache(struct ath12k_vif *ahvif, u8 link_id)
 {
-	kfree(arvif->cache);
-	arvif->cache = NULL;
+	kfree(ahvif->cache[link_id]);
+	ahvif->cache[link_id] = NULL;
 }
 
 static void ath12k_mac_op_bss_info_changed(struct ieee80211_hw *hw,
@@ -3493,15 +3494,14 @@  static void ath12k_mac_op_bss_info_changed(struct ieee80211_hw *hw,
 
 	if (!ar) {
 		/* TODO Once link vif is fetched based on link id from
-		 * info, avoid using the deflink above and cache the link
-		 * configs in ahvif per link.
+		 * info, avoid using ATH12K_DEFAULT_LINK_ID.
 		 */
-		cache = ath12k_arvif_get_cache(arvif);
+		cache = ath12k_ahvif_get_link_cache(ahvif, ATH12K_DEFAULT_LINK_ID);
 		if (!cache) {
 			mutex_unlock(&ah->conf_mutex);
 			return;
 		}
-		arvif->cache->bss_conf_changed |= changed;
+		cache->bss_conf_changed |= changed;
 		mutex_unlock(&ah->conf_mutex);
 		return;
 	}
@@ -4172,7 +4172,7 @@  static int ath12k_mac_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
 			return -EINVAL;
 		}
 
-		cache = ath12k_arvif_get_cache(arvif);
+		cache = ath12k_ahvif_get_link_cache(ahvif, ATH12K_DEFAULT_LINK_ID);
 		if (!cache) {
 			mutex_unlock(&ah->conf_mutex);
 			return -ENOSPC;
@@ -5103,7 +5103,7 @@  static int ath12k_mac_op_conf_tx(struct ieee80211_hw *hw,
 	ar = ath12k_get_ar_by_vif(hw, vif);
 	if (!ar) {
 		/* cache the info and apply after vdev is created */
-		cache = ath12k_arvif_get_cache(arvif);
+		cache = ath12k_ahvif_get_link_cache(ahvif, ATH12K_DEFAULT_LINK_ID);
 		if (!cache) {
 			mutex_unlock(&ah->conf_mutex);
 			return -ENOSPC;
@@ -6819,10 +6819,11 @@  int ath12k_mac_vdev_create(struct ath12k *ar, struct ath12k_link_vif *arvif)
 	return ret;
 }
 
-static void ath12k_mac_vif_cache_flush(struct ath12k *ar,  struct ath12k_link_vif *arvif)
+static void ath12k_mac_vif_cache_flush(struct ath12k *ar, struct ath12k_link_vif *arvif)
 {
-	struct ieee80211_vif *vif = ath12k_ahvif_to_vif(arvif->ahvif);
-	struct ath12k_vif_cache *cache = arvif->cache;
+	struct ath12k_vif *ahvif = arvif->ahvif;
+	struct ieee80211_vif *vif = ath12k_ahvif_to_vif(ahvif);
+	struct ath12k_vif_cache *cache = ahvif->cache[arvif->link_id];
 	struct ath12k_base *ab = ar->ab;
 
 	int ret;
@@ -6853,7 +6854,7 @@  static void ath12k_mac_vif_cache_flush(struct ath12k *ar,  struct ath12k_link_vi
 			ath12k_warn(ab, "unable to apply set key param to vdev %d ret %d\n",
 				    arvif->vdev_id, ret);
 	}
-	ath12k_arvif_put_cache(arvif);
+	ath12k_ahvif_put_link_cache(ahvif, arvif->link_id);
 }
 
 static struct ath12k *ath12k_mac_assign_vif_to_vdev(struct ieee80211_hw *hw,
@@ -7059,7 +7060,7 @@  static int ath12k_mac_vdev_delete(struct ath12k *ar, struct ath12k_link_vif *arv
 	spin_unlock_bh(&ar->data_lock);
 
 	ath12k_peer_cleanup(ar, arvif->vdev_id);
-	ath12k_arvif_put_cache(arvif);
+	ath12k_ahvif_put_link_cache(ahvif, arvif->link_id);
 
 	idr_for_each(&ar->txmgmt_idr,
 		     ath12k_mac_vif_txmgmt_idr_remove, vif);
@@ -7099,7 +7100,7 @@  static void ath12k_mac_op_remove_interface(struct ieee80211_hw *hw,
 		/* if we cached some config but never received assign chanctx,
 		 * free the allocated cache.
 		 */
-		ath12k_arvif_put_cache(arvif);
+		ath12k_ahvif_put_link_cache(ahvif, ATH12K_DEFAULT_LINK_ID);
 		mutex_unlock(&ah->conf_mutex);
 		return;
 	}