linux-kernel - [PATCH wireless 1/2] wifi: qtnfmac: Move stats allocation to core

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Date: Fri, 26 Apr 2024 02:31:48 -0700
From: Breno Leitao <leitao@...ian.org>
To: kvalo@...nel.org,
	Igor Mitsyanko <imitsyanko@...ntenna.com>,
	Sergey Matyukevich <geomatsi@...il.com>
Cc: linux-wireless@...r.kernel.org,
	kuba@...nel.org,
	Johannes Berg <johannes.berg@...el.com>,
	linux-kernel@...r.kernel.org (open list)
Subject: [PATCH wireless 1/2] wifi: qtnfmac: Move stats allocation to core

With commit 34d21de99cea9 ("net: Move {l,t,d}stats allocation to core and
convert veth & vrf"), stats allocation could be done on net core instead
of this driver.

With this new approach, the driver doesn't have to bother with error
handling (allocation failure checking, making sure free happens in the
right spot, etc). This is core responsibility now.

Move qtnfmac driver to leverage the core allocation.

Signed-off-by: Breno Leitao <leitao@...ian.org>
---
 drivers/net/wireless/quantenna/qtnfmac/core.c | 15 +--------------
 1 file changed, 1 insertion(+), 14 deletions(-)

PS: This is compile-tested only due to lack of hardware.

diff --git a/drivers/net/wireless/quantenna/qtnfmac/core.c b/drivers/net/wireless/quantenna/qtnfmac/core.c
index 677bac835330..0aa4b1d14809 100644
--- a/drivers/net/wireless/quantenna/qtnfmac/core.c
+++ b/drivers/net/wireless/quantenna/qtnfmac/core.c
@@ -196,22 +196,8 @@ static int qtnf_netdev_port_parent_id(struct net_device *ndev,
 	return 0;
 }
 
-static int qtnf_netdev_alloc_pcpu_stats(struct net_device *dev)
-{
-	dev->tstats = netdev_alloc_pcpu_stats(struct pcpu_sw_netstats);
-
-	return dev->tstats ? 0 : -ENOMEM;
-}
-
-static void qtnf_netdev_free_pcpu_stats(struct net_device *dev)
-{
-	free_percpu(dev->tstats);
-}
-
 /* Network device ops handlers */
 const struct net_device_ops qtnf_netdev_ops = {
-	.ndo_init = qtnf_netdev_alloc_pcpu_stats,
-	.ndo_uninit = qtnf_netdev_free_pcpu_stats,
 	.ndo_open = qtnf_netdev_open,
 	.ndo_stop = qtnf_netdev_close,
 	.ndo_start_xmit = qtnf_netdev_hard_start_xmit,
@@ -483,6 +469,7 @@ int qtnf_core_net_attach(struct qtnf_wmac *mac, struct qtnf_vif *vif,
 	dev->watchdog_timeo = QTNF_DEF_WDOG_TIMEOUT;
 	dev->tx_queue_len = 100;
 	dev->ethtool_ops = &qtnf_ethtool_ops;
+	dev->pcpu_stat_type = NETDEV_PCPU_STAT_TSTATS;
 
 	if (qtnf_hwcap_is_set(&mac->bus->hw_info, QLINK_HW_CAPAB_HW_BRIDGE))
 		dev->needed_tailroom = sizeof(struct qtnf_frame_meta_info);
-- 
2.43.0