net: Use u64_stats_fetch_begin_irq() for stats fetch.

On 32bit-UP u64_stats_fetch_begin() disables only preemption. If the
reader is in preemptible context and the writer side
(u64_stats_update_begin*()) runs in an interrupt context (IRQ or
softirq) then the writer can update the stats during the read operation.
This update remains undetected.

Use u64_stats_fetch_begin_irq() to ensure the stats fetch on 32bit-UP
are not interrupted by a writer. 32bit-SMP remains unaffected by this
change.

Cc: "David S. Miller" <[email protected]>
Cc: Catherine Sullivan <[email protected]>
Cc: David Awogbemila <[email protected]>
Cc: Dimitris Michailidis <[email protected]>
Cc: Eric Dumazet <[email protected]>
Cc: Hans Ulli Kroll <[email protected]>
Cc: Jakub Kicinski <[email protected]>
Cc: Jeroen de Borst <[email protected]>
Cc: Johannes Berg <[email protected]>
Cc: Linus Walleij <[email protected]>
Cc: Paolo Abeni <[email protected]>
Cc: Simon Horman <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Signed-off-by: Sebastian Andrzej Siewior <[email protected]>
Reviewed-by: Simon Horman <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

0 files changed, 0 insertions, 0 deletions