[PATCH v4 07/12] wifi: ath12k: Cache vdev configs before vdev create

Rameshkumar Sundaram
2024-03-12T13:56:34Z

From: Sriram R <quic_srirrama@quicinc.com>

Since the vdev create for a corresponding vif is deferred
until a channel is assigned, cache the information which
are received through mac80211 ops between add_interface()
and assign_vif_chanctx() and set them once the vdev is
created on one of the ath12k radios as the channel gets
assigned via assign_vif_chanctx().

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0.1-00029-QCAHKSWPL_SILICONZ-1
Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0.c5-00481-QCAHMTSWPL_V1.0_V2.0_SILICONZ-3

Signed-off-by: Sriram R <quic_srirrama@quicinc.com>
Signed-off-by: Rameshkumar Sundaram <quic_ramess@quicinc.com>
---
drivers/net/wireless/ath/ath12k/core.h | 19 ++++
drivers/net/wireless/ath/ath12k/mac.c | 116 +++++++++++++++++++------
2 files changed, 107 insertions(+), 28 deletions(-)

diff --git a/drivers/net/wireless/ath/ath12k/core.h b/drivers/net/wireless/ath/ath12k/core.h
index 70daec38d486..fe151aa90687 100644
--- a/drivers/net/wireless/ath/ath12k/core.h
+++ b/drivers/net/wireless/ath/ath12k/core.h
@@ -214,6 +214,24 @@ enum ath12k_monitor_flags {
ATH12K_FLAG_MONITOR_ENABLED,
};

+struct ath12k_tx_conf {
+ bool changed;
+ u16 ac;
+ struct ieee80211_tx_queue_params tx_queue_params;
+};
+
+struct ath12k_key_conf {
+ bool changed;
+ enum set_key_cmd cmd;
+ struct ieee80211_key_conf *key;
+};
+
+struct ath12k_vif_cache {
+ struct ath12k_tx_conf tx_conf;
+ struct ath12k_key_conf key_conf;
+ u32 bss_conf_changed;
+};
+
struct ath12k_vif {
u32 vdev_id;
enum wmi_vdev_type vdev_type;
@@ -268,6 +286,7 @@ struct ath12k_vif {
u8 vdev_stats_id;
u32 punct_bitmap;
bool ps;
+ struct ath12k_vif_cache cache;
};

struct ath12k_vif_iter {
diff --git a/drivers/net/wireless/ath/ath12k/mac.c b/drivers/net/wireless/ath/ath12k/mac.c
index 6d2176b0a556..fab92f08fdb7 100644
--- a/drivers/net/wireless/ath/ath12k/mac.c
+++ b/drivers/net/wireless/ath/ath12k/mac.c
@@ -3021,12 +3021,14 @@ static void ath12k_mac_op_bss_info_changed(struct ieee80211_hw *hw,

ar = ath12k_get_ar_by_vif(hw, vif);

- /* TODO if the vdev is not created on a certain radio,
+ /* if the vdev is not created on a certain radio,
* cache the info to be updated later on vdev creation
*/

- if (!ar)
+ if (!ar) {
+ arvif->cache.bss_conf_changed |= changed;
return;
+ }

mutex_lock(&ar->conf_mutex);

@@ -3517,12 +3519,11 @@ static int ath12k_clear_peer_keys(struct ath12k_vif *arvif,
return first_errno;
}

-static int ath12k_mac_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
- struct ieee80211_vif *vif, struct ieee80211_sta *sta,
- struct ieee80211_key_conf *key)
+static int ath12k_mac_set_key(struct ath12k *ar, enum set_key_cmd cmd,
+ struct ieee80211_vif *vif, struct ieee80211_sta *sta,
+ struct ieee80211_key_conf *key)
{
- struct ath12k *ar;
- struct ath12k_base *ab;
+ struct ath12k_base *ab = ar->ab;
struct ath12k_vif *arvif = ath12k_vif_to_arvif(vif);
struct ath12k_peer *peer;
struct ath12k_sta *arsta;
@@ -3530,28 +3531,11 @@ static int ath12k_mac_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
int ret = 0;
u32 flags = 0;

- /* BIP needs to be done in software */
- if (key->cipher == WLAN_CIPHER_SUITE_AES_CMAC ||
- key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 ||
- key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256 ||
- key->cipher == WLAN_CIPHER_SUITE_BIP_CMAC_256)
- return 1;
-
- ar = ath12k_get_ar_by_vif(hw, vif);
- if (!ar) {
- WARN_ON_ONCE(1);
- return -EINVAL;
- }
- ab = ar->ab;
+ lockdep_assert_held(&ar->conf_mutex);

- if (test_bit(ATH12K_FLAG_HW_CRYPTO_DISABLED, &ar->ab->dev_flags))
+ if (test_bit(ATH12K_FLAG_HW_CRYPTO_DISABLED, &ab->dev_flags))
return 1;

- if (key->keyidx > WMI_MAX_KEY_INDEX)
- return -ENOSPC;
-
- mutex_lock(&ar->conf_mutex);
-
if (sta)
peer_addr = sta->addr;
else if (arvif->vdev_type == WMI_VDEV_TYPE_STA)
@@ -3643,6 +3627,43 @@ static int ath12k_mac_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
spin_unlock_bh(&ab->base_lock);

exit:
+ return ret;
+}
+
+
+static int ath12k_mac_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
+ struct ieee80211_vif *vif, struct ieee80211_sta *sta,
+ struct ieee80211_key_conf *key)
+{
+ struct ath12k_vif *arvif = ath12k_vif_to_arvif(vif);
+ struct ath12k *ar;
+ int ret;
+
+ /* BIP needs to be done in software */
+ if (key->cipher == WLAN_CIPHER_SUITE_AES_CMAC ||
+ key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 ||
+ key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256 ||
+ key->cipher == WLAN_CIPHER_SUITE_BIP_CMAC_256)
+ return 1;
+
+ if (key->keyidx > WMI_MAX_KEY_INDEX)
+ return -ENOSPC;
+
+ ar = ath12k_get_ar_by_vif(hw, vif);
+ if (!ar) {
+ /* ar is expected to be valid when sta ptr is available */
+ if (sta) {
+ WARN_ON_ONCE(1);
+ return -EINVAL;
+ }
+ arvif->cache.key_conf.cmd = cmd;
+ arvif->cache.key_conf.key = key;
+ arvif->cache.key_conf.changed = true;
+ return 0;
+ }
+
+ mutex_lock(&ar->conf_mutex);
+ ret = ath12k_mac_set_key(ar, cmd, vif, sta, key);
mutex_unlock(&ar->conf_mutex);
return ret;
}
@@ -4477,7 +4498,10 @@ static int ath12k_mac_op_conf_tx(struct ieee80211_hw *hw,

ar = ath12k_get_ar_by_vif(hw, vif);
if (!ar) {
- /* TODO cache the info and apply after vdev is created */
+ /* cache the info and apply after vdev is created */
+ arvif->cache.tx_conf.changed = true;
+ arvif->cache.tx_conf.ac = ac;
+ arvif->cache.tx_conf.tx_queue_params = *params;
return -EINVAL;
}

@@ -6121,6 +6145,41 @@ static int ath12k_mac_vdev_create(struct ath12k *ar, struct ieee80211_vif *vif)
return ret;
}

+static void ath12k_mac_vif_cache_flush(struct ath12k *ar, struct ieee80211_vif *vif)
+{
+ struct ath12k_vif *arvif = ath12k_vif_to_arvif(vif);
+ struct ath12k_base *ab = ar->ab;
+ int ret;
+
+ lockdep_assert_held(&ar->conf_mutex);
+
+ if (arvif->cache.tx_conf.changed) {
+ ret = ath12k_mac_conf_tx(arvif, 0, arvif->cache.tx_conf.ac,
+ &arvif->cache.tx_conf.tx_queue_params);
+ if (ret)
+ ath12k_warn(ab,
+ "unable to apply tx config parameters to vdev %d\n",
+ ret);
+ }
+
+ if (arvif->cache.bss_conf_changed)
+ ath12k_mac_bss_info_changed(ar, arvif, &vif->bss_conf,
+ arvif->cache.bss_conf_changed);
+
+ if (arvif->cache.key_conf.changed) {
+ ret = ath12k_mac_set_key(ar, arvif->cache.key_conf.cmd,
+ vif, NULL,
+ arvif->cache.key_conf.key);
+ if (ret) {
+ WARN_ON_ONCE(1);
+ ath12k_warn(ab, "unable to apply set key param to vdev %d ret %d\n",
+ arvif->vdev_id, ret);
+ }
+ }
+
+ memset(&arvif->cache, 0, sizeof(struct ath12k_vif_cache));
+}
+
static struct ath12k *ath12k_mac_assign_vif_to_vdev(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_chanctx_conf *ctx)
@@ -6203,10 +6262,11 @@ static struct ath12k *ath12k_mac_assign_vif_to_vdev(struct ieee80211_hw *hw,
goto unlock;
}

- /* TODO If the vdev is created during channel assign and not during
+ /* If the vdev is created during channel assign and not during
* add_interface(), Apply any parameters for the vdev which were received
* after add_interface, corresponding to this vif.
*/
+ ath12k_mac_vif_cache_flush(ar, vif);
unlock:
mutex_unlock(&ar->conf_mutex);
out:
--
2.25.1