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linux/include/net/page_pool
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Jakub Kicinski 28b225282d page_pool: store detach_time as ktime_t to avoid false-negatives 
While testing other changes in vng I noticed that
nl_netdev.page_pool_check flakes. This never happens in real CI.

Turns out vng may boot and get to that test in less than a second.
page_pool_detached() records the detach time in seconds, so if
vng is fast enough detach time is set to 0. Other code treats
0 as "not detached". detach_time is only used to report the state
to the user, so it's not a huge deal in practice but let's fix it.
Store the raw ktime_t (nanoseconds) instead. A nanosecond value
of 0 is practically impossible.

Acked-by: Jesper Dangaard Brouer <hawk@kernel.org>
Fixes: 69cb4952b6 ("net: page_pool: report when page pool was destroyed")
Link: https://patch.msgid.link/20260310003907.3540019-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
History 2026-03-10 19:03:34 -07:00
..
helpers.h net: add helper to pre-check if PP for an Rx queue will be unreadable 2025-09-04 10:19:17 +02:00
memory_provider.h net: move mp dev config validation to __net_mp_open_rxq() 2025-04-04 07:35:38 -07:00
types.h page_pool: store detach_time as ktime_t to avoid false-negatives 2026-03-10 19:03:34 -07:00