From 07aa33988ad92fef79056f5ec30b9a0e4364b616 Mon Sep 17 00:00:00 2001 From: Dmitry Antipov Date: Wed, 8 May 2024 14:40:10 +0300 Subject: mac802154: fix time calculation in ieee802154_configure_durations() Since 'symbol_duration' of 'struct wpan_phy' is in nanoseconds but 'lifs_period' and 'sifs_period' are both in microseconds, fix time calculation in 'ieee802154_configure_durations()' and use convenient 'NSEC_PER_USEC' in 'ieee802154_setup_wpan_phy_pib()' as well. Compile tested only. Found by Linux Verification Center (linuxtesting.org) with SVACE. Fixes: 781830c800dd ("net: mac802154: Set durations automatically") Signed-off-by: Dmitry Antipov Acked-by: Miquel Raynal Message-ID: <20240508114010.219527-1-dmantipov@yandex.ru> Signed-off-by: Stefan Schmidt --- net/mac802154/main.c | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) (limited to 'net') diff --git a/net/mac802154/main.c b/net/mac802154/main.c index 9ab7396668d2..21b7c3b280b4 100644 --- a/net/mac802154/main.c +++ b/net/mac802154/main.c @@ -161,8 +161,10 @@ void ieee802154_configure_durations(struct wpan_phy *phy, } phy->symbol_duration = duration; - phy->lifs_period = (IEEE802154_LIFS_PERIOD * phy->symbol_duration) / NSEC_PER_SEC; - phy->sifs_period = (IEEE802154_SIFS_PERIOD * phy->symbol_duration) / NSEC_PER_SEC; + phy->lifs_period = + (IEEE802154_LIFS_PERIOD * phy->symbol_duration) / NSEC_PER_USEC; + phy->sifs_period = + (IEEE802154_SIFS_PERIOD * phy->symbol_duration) / NSEC_PER_USEC; } EXPORT_SYMBOL(ieee802154_configure_durations); @@ -184,10 +186,10 @@ static void ieee802154_setup_wpan_phy_pib(struct wpan_phy *wpan_phy) * Should be done when all drivers sets this value. */ - wpan_phy->lifs_period = - (IEEE802154_LIFS_PERIOD * wpan_phy->symbol_duration) / 1000; - wpan_phy->sifs_period = - (IEEE802154_SIFS_PERIOD * wpan_phy->symbol_duration) / 1000; + wpan_phy->lifs_period = (IEEE802154_LIFS_PERIOD * + wpan_phy->symbol_duration) / NSEC_PER_USEC; + wpan_phy->sifs_period = (IEEE802154_SIFS_PERIOD * + wpan_phy->symbol_duration) / NSEC_PER_USEC; } int ieee802154_register_hw(struct ieee802154_hw *hw) -- cgit v1.2.3 From b8ec0dc3845f6c9089573cb5c2c4b05f7fc10728 Mon Sep 17 00:00:00 2001 From: Yunshui Jiang Date: Fri, 31 May 2024 16:07:39 +0800 Subject: net: mac802154: Fix racy device stats updates by DEV_STATS_INC() and DEV_STATS_ADD() mac802154 devices update their dev->stats fields locklessly. Therefore these counters should be updated atomically. Adopt SMP safe DEV_STATS_INC() and DEV_STATS_ADD() to achieve this. Signed-off-by: Yunshui Jiang Message-ID: <20240531080739.2608969-1-jiangyunshui@kylinos.cn> Signed-off-by: Stefan Schmidt --- net/mac802154/tx.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'net') diff --git a/net/mac802154/tx.c b/net/mac802154/tx.c index 2a6f1ed763c9..6fbed5bb5c3e 100644 --- a/net/mac802154/tx.c +++ b/net/mac802154/tx.c @@ -34,8 +34,8 @@ void ieee802154_xmit_sync_worker(struct work_struct *work) if (res) goto err_tx; - dev->stats.tx_packets++; - dev->stats.tx_bytes += skb->len; + DEV_STATS_INC(dev, tx_packets); + DEV_STATS_ADD(dev, tx_bytes, skb->len); ieee802154_xmit_complete(&local->hw, skb, false); @@ -90,8 +90,8 @@ ieee802154_tx(struct ieee802154_local *local, struct sk_buff *skb) if (ret) goto err_wake_netif_queue; - dev->stats.tx_packets++; - dev->stats.tx_bytes += len; + DEV_STATS_INC(dev, tx_packets); + DEV_STATS_ADD(dev, tx_bytes, len); } else { local->tx_skb = skb; queue_work(local->workqueue, &local->sync_tx_work); -- cgit v1.2.3