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| author |   Vladimir Oltean <vladimir.oltean@nxp.com> | 2020-03-27 21:55:47 +0200 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2020-03-27 16:07:25 -0700 |
| commit | 0b912fc93a680ab6105a63c36222923fbe09065e (patch) | |
| tree | 3ae828b214df599a0f3f2b463acbb23c9ebfea45 /drivers/net/dsa/ocelot | |
| parent | net: dsa: vsc73xx: make the MTU configurable (diff) | |
| download | linux-dev-0b912fc93a680ab6105a63c36222923fbe09065e.tar.xz linux-dev-0b912fc93a680ab6105a63c36222923fbe09065e.zip | |
net: dsa: felix: support changing the MTU
Changing the MTU for this switch means altering the
DEV_GMII:MAC_CFG_STATUS:MAC_MAXLEN_CFG field MAX_LEN, which in turn
limits the size of frames that can be received.
Special accounting needs to be done for the DSA CPU port (NPI port in
hardware terms). The NPI port configuration needs to be held inside the
private ocelot structure, since it is now accessed from multiple places.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/dsa/ocelot')
| -rw-r--r-- | drivers/net/dsa/ocelot/felix.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/net/dsa/ocelot/felix.c b/drivers/net/dsa/ocelot/felix.c index 69546383a382..e2effeaa685e 100644 --- a/drivers/net/dsa/ocelot/felix.c +++ b/drivers/net/dsa/ocelot/felix.c @@ -532,6 +532,7 @@ static int felix_setup(struct dsa_switch *ds) ANA_PGID_PGID_PGID(GENMASK(ocelot->num_phys_ports, 0)), ANA_PGID_PGID, PGID_UC); + ds->mtu_enforcement_ingress = true; /* It looks like the MAC/PCS interrupt register - PM0_IEVENT (0x8040) * isn't instantiated for the Felix PF. * In-band AN may take a few ms to complete, so we need to poll. @@ -609,6 +610,22 @@ static bool felix_txtstamp(struct dsa_switch *ds, int port, return false; } +static int felix_change_mtu(struct dsa_switch *ds, int port, int new_mtu) +{ + struct ocelot *ocelot = ds->priv; + + ocelot_port_set_maxlen(ocelot, port, new_mtu); + + return 0; +} + +static int felix_get_max_mtu(struct dsa_switch *ds, int port) +{ + struct ocelot *ocelot = ds->priv; + + return ocelot_get_max_mtu(ocelot, port); +} + static int felix_cls_flower_add(struct dsa_switch *ds, int port, struct flow_cls_offload *cls, bool ingress) { @@ -664,6 +681,8 @@ static const struct dsa_switch_ops felix_switch_ops = { .port_hwtstamp_set = felix_hwtstamp_set, .port_rxtstamp = felix_rxtstamp, .port_txtstamp = felix_txtstamp, + .port_change_mtu = felix_change_mtu, + .port_max_mtu = felix_get_max_mtu, .cls_flower_add = felix_cls_flower_add, .cls_flower_del = felix_cls_flower_del, .cls_flower_stats = felix_cls_flower_stats, |