netdev_stat_queue_sum(9)

✨ netdev_stat_queue_sum(9) ✨

okay so this is a page from the Kernel API Manual and honestly? it's a little baddie for adding up queue stats 💅 like literally the whole point is summing stats across a range of queues and it ate.

🌸 NAME 🌸

netdev_stat_queue_sum — add up queue stats from range of queues 🎀

🦋 SYNOPSIS 🦋

void netdev_stat_queue_sum (struct net_device *netdev , int rx_start ,
int rx_end , struct netdev_queue_stats_rx *rx_sum , int tx_start , int
tx_end , struct netdev_queue_stats_tx *tx_sum );

👑 ARGUMENTS 👑

• netdev — a net_device. that's it, that's the whole vibe 🫶
• rx_start — index of the first Rx queue you wanna query ✨
• rx_end — index after the last Rx queue, i.e. the first one you're not querying. yes the not is doing numbers there 😭
• rx_sum — output Rx stats, and ngl it should be already initialized before you hand it over 🧚
• tx_start — index of the first Tx queue to query 💜
• tx_end — index after the last Tx queue, again the first one not to query 🎀
• tx_sum — output Tx stats, should be already initialized too, fr fr ⭐

🌈 DESCRIPTION 🌈

So what it does: it adds stats from the [start, end) range of queue IDs into the *x_sum structs 💖 and bestie, those sum structs must be already initialized — no cap, don't come in there with uninitialized structs 🙈

Usually this helper gets invoked from the .get_base_stats callbacks of drivers to account for stats of disabled queues 👑 in that case the ranges are usually [netdev->real_num_*x_queues, netdev->num_*x_queues) — iconic behaviour honestly 🔥

💀 SEE ALSO 💀

• Kernel file ./net/core/netdev-genl.c — go read it, iykyk 🦋

k bye bestie, mwah 🫶💜 this cutie lives in ./net/core and the version is dated October 2026 — periodt 💅✨