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| author | Vladimir Oltean <vladimir.oltean@nxp.com> | 2020-12-12 21:16:12 +0200 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2020-12-14 19:28:22 -0800 |
| commit | ca0b272b48f3adc112112a481f9f117f8308abf1 (patch) | |
| tree | ea560a6605b504b1cb465eaf885709cbd1093f52 /include/soc | |
| parent | a4485baefa1efa596702ebffd5a9c760d42b14b5 (diff) | |
| download | linux-ca0b272b48f3adc112112a481f9f117f8308abf1.tar.bz2 | |
net: mscc: ocelot: install MAC addresses in .ndo_set_rx_mode from process context
Currently ocelot_set_rx_mode calls ocelot_mact_learn directly, which has
a very nice ocelot_mact_wait_for_completion at the end. Introduced in
commit 639c1b2625af ("net: mscc: ocelot: Register poll timeout should be
wall time not attempts"), this function uses readx_poll_timeout which
triggers a lot of lockdep warnings and is also dangerous to use from
atomic context, potentially leading to lockups and panics.
Steen Hegelund added a poll timeout of 100 ms for checking the MAC
table, a duration which is clearly absurd to poll in atomic context.
So we need to defer the MAC table access to process context, which we do
via a dynamically allocated workqueue which contains all there is to
know about the MAC table operation it has to do.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20201212191612.222019-1-vladimir.oltean@nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'include/soc')
| -rw-r--r-- | include/soc/mscc/ocelot.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/soc/mscc/ocelot.h b/include/soc/mscc/ocelot.h index 731116611390..2f4cd3288bcc 100644 --- a/include/soc/mscc/ocelot.h +++ b/include/soc/mscc/ocelot.h @@ -650,6 +650,8 @@ struct ocelot { struct delayed_work stats_work; struct workqueue_struct *stats_queue; + struct workqueue_struct *owq; + u8 ptp:1; struct ptp_clock *ptp_clock; struct ptp_clock_info ptp_info; |