net: mscc: ocelot: fix race condition with TX timestamping

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The TX-timestampable skb is added late to the ocelot_port->tx_skbs. It
is in a race with the TX timestamp IRQ, which checks that queue trying
to match the timestamp with the skb by the ts_id. The skb should be
added to the queue before the IRQ can fire.

Fixes: 4e3b0468e6 ("net: mscc: PTP Hardware Clock (PHC) support")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Vladimir Oltean 2020-09-18 04:07:23 +03:00 • committed by David S. Miller

parent 5f6857e808

commit 9dda66acdd

1 changed files with 8 additions and 6 deletions

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drivers/net/ethernet/mscc/ocelot_net.c

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