diff options
| author | Vladimir Oltean <vladimir.oltean@nxp.com> | 2023-04-15 20:05:51 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2023-04-18 05:01:19 +0300 |
| commit | 403ffc2c34de5297d007e0e169bf022094d444c2 (patch) | |
| tree | 50c835cd0c7aaad2aedd9a49e5695f55c1e46523 /drivers/net/ethernet/mscc/ocelot.h | |
| parent | a1ca9f8b07d865224a6e4b1c41692f10bd95a311 (diff) | |
| download | linux-403ffc2c34de5297d007e0e169bf022094d444c2.tar.xz | |
net: mscc: ocelot: add support for preemptible traffic classes
In order to not transmit (preemptible) frames which will be received by
the link partner as corrupted (because it doesn't support FP), the
hardware requires the driver to program the QSYS_PREEMPTION_CFG_P_QUEUES
register only after the MAC Merge layer becomes active (verification
succeeds, or was disabled).
There are some cases when FP is known (through experimentation) to be
broken. Give priority to FP over cut-through switching, and disable FP
for known broken link modes.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers/net/ethernet/mscc/ocelot.h')
| -rw-r--r-- | drivers/net/ethernet/mscc/ocelot.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mscc/ocelot.h b/drivers/net/ethernet/mscc/ocelot.h index d920ca930690..14440a3b04c3 100644 --- a/drivers/net/ethernet/mscc/ocelot.h +++ b/drivers/net/ethernet/mscc/ocelot.h @@ -119,6 +119,9 @@ int ocelot_stats_init(struct ocelot *ocelot); void ocelot_stats_deinit(struct ocelot *ocelot); int ocelot_mm_init(struct ocelot *ocelot); +void ocelot_port_change_fp(struct ocelot *ocelot, int port, + unsigned long preemptible_tcs); +void ocelot_port_update_active_preemptible_tcs(struct ocelot *ocelot, int port); extern struct notifier_block ocelot_netdevice_nb; extern struct notifier_block ocelot_switchdev_nb; |