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net: add dev_dstats_rx_dropped_add() helper

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Introduce the dev_dstats_rx_dropped_add() helper to allow incrementing
the rx_drops per-CPU statistic by an arbitrary value, rather than just
one. This is useful for drivers or code paths that need to account for
multiple dropped packets at once, such as when dropping entire queues.

Reviewed-by: Joe Damato <joe@dama.to>
Signed-off-by: Breno Leitao <leitao@debian.org>
Link: https://patch.msgid.link/20250618-netdevsim_stat-v4-3-19fe0d35e28e@debian.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Breno Leitao 2025-06-18 01:32:44 -07:00 committed by Jakub Kicinski
parent 788eb4de60
commit 27480a7c8f
1 changed files with 10 additions and 0 deletions
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10
include/linux/netdevice.h
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@ -3016,6 +3016,16 @@ static inline void dev_dstats_rx_dropped(struct net_device *dev)
u64_stats_update_end(&dstats->syncp);
}
static inline void dev_dstats_rx_dropped_add(struct net_device *dev,
unsigned int packets)
{
struct pcpu_dstats *dstats = this_cpu_ptr(dev->dstats);
u64_stats_update_begin(&dstats->syncp);
u64_stats_add(&dstats->rx_drops, packets);
u64_stats_update_end(&dstats->syncp);
}
static inline void dev_dstats_tx_add(struct net_device *dev,
unsigned int len)
{