From 21ce7f3e16fbf89faaf149cfe0f730edfc553914 Mon Sep 17 00:00:00 2001 From: Vladimir Oltean Date: Mon, 4 May 2020 01:20:26 +0300 Subject: [PATCH 1/2] net: dsa: ocelot: the MAC table on Felix is twice as large When running 'bridge fdb dump' on Felix, sometimes learnt and static MAC addresses would appear, sometimes they wouldn't. Turns out, the MAC table has 4096 entries on VSC7514 (Ocelot) and 8192 entries on VSC9959 (Felix), so the existing code from the Ocelot common library only dumped half of Felix's MAC table. They are both organized as a 4-way set-associative TCAM, so we just need a single variable indicating the correct number of rows. Fixes: 56051948773e ("net: dsa: ocelot: add driver for Felix switch family") Signed-off-by: Vladimir Oltean Reviewed-by: Florian Fainelli Signed-off-by: David S. Miller --- drivers/net/dsa/ocelot/felix.c | 1 + drivers/net/dsa/ocelot/felix.h | 1 + drivers/net/dsa/ocelot/felix_vsc9959.c | 1 + drivers/net/ethernet/mscc/ocelot.c | 6 ++---- drivers/net/ethernet/mscc/ocelot_regs.c | 1 + include/soc/mscc/ocelot.h | 1 + 6 files changed, 7 insertions(+), 4 deletions(-) diff --git a/drivers/net/dsa/ocelot/felix.c b/drivers/net/dsa/ocelot/felix.c index d0a3764ff0cf..e2c6bf0e430e 100644 --- a/drivers/net/dsa/ocelot/felix.c +++ b/drivers/net/dsa/ocelot/felix.c @@ -400,6 +400,7 @@ static int felix_init_structs(struct felix *felix, int num_phys_ports) ocelot->stats_layout = felix->info->stats_layout; ocelot->num_stats = felix->info->num_stats; ocelot->shared_queue_sz = felix->info->shared_queue_sz; + ocelot->num_mact_rows = felix->info->num_mact_rows; ocelot->vcap_is2_keys = felix->info->vcap_is2_keys; ocelot->vcap_is2_actions= felix->info->vcap_is2_actions; ocelot->vcap = felix->info->vcap; diff --git a/drivers/net/dsa/ocelot/felix.h b/drivers/net/dsa/ocelot/felix.h index 82d46f260041..9af106513e53 100644 --- a/drivers/net/dsa/ocelot/felix.h +++ b/drivers/net/dsa/ocelot/felix.h @@ -15,6 +15,7 @@ struct felix_info { const u32 *const *map; const struct ocelot_ops *ops; int shared_queue_sz; + int num_mact_rows; const struct ocelot_stat_layout *stats_layout; unsigned int num_stats; int num_ports; diff --git a/drivers/net/dsa/ocelot/felix_vsc9959.c b/drivers/net/dsa/ocelot/felix_vsc9959.c index b4078f3c5c38..8bf395f12b47 100644 --- a/drivers/net/dsa/ocelot/felix_vsc9959.c +++ b/drivers/net/dsa/ocelot/felix_vsc9959.c @@ -1220,6 +1220,7 @@ struct felix_info felix_info_vsc9959 = { .vcap_is2_actions = vsc9959_vcap_is2_actions, .vcap = vsc9959_vcap_props, .shared_queue_sz = 128 * 1024, + .num_mact_rows = 2048, .num_ports = 6, .switch_pci_bar = 4, .imdio_pci_bar = 0, diff --git a/drivers/net/ethernet/mscc/ocelot.c b/drivers/net/ethernet/mscc/ocelot.c index a8c48a4a708f..887b3cc88354 100644 --- a/drivers/net/ethernet/mscc/ocelot.c +++ b/drivers/net/ethernet/mscc/ocelot.c @@ -1031,10 +1031,8 @@ int ocelot_fdb_dump(struct ocelot *ocelot, int port, { int i, j; - /* Loop through all the mac tables entries. There are 1024 rows of 4 - * entries. - */ - for (i = 0; i < 1024; i++) { + /* Loop through all the mac tables entries. */ + for (i = 0; i < ocelot->num_mact_rows; i++) { for (j = 0; j < 4; j++) { struct ocelot_mact_entry entry; bool is_static; diff --git a/drivers/net/ethernet/mscc/ocelot_regs.c b/drivers/net/ethernet/mscc/ocelot_regs.c index b88b5899b227..7d4fd1b6adda 100644 --- a/drivers/net/ethernet/mscc/ocelot_regs.c +++ b/drivers/net/ethernet/mscc/ocelot_regs.c @@ -431,6 +431,7 @@ int ocelot_chip_init(struct ocelot *ocelot, const struct ocelot_ops *ops) ocelot->stats_layout = ocelot_stats_layout; ocelot->num_stats = ARRAY_SIZE(ocelot_stats_layout); ocelot->shared_queue_sz = 224 * 1024; + ocelot->num_mact_rows = 1024; ocelot->ops = ops; ret = ocelot_regfields_init(ocelot, ocelot_regfields); diff --git a/include/soc/mscc/ocelot.h b/include/soc/mscc/ocelot.h index 6d6a3947c8b7..efc8b613d486 100644 --- a/include/soc/mscc/ocelot.h +++ b/include/soc/mscc/ocelot.h @@ -502,6 +502,7 @@ struct ocelot { unsigned int num_stats; int shared_queue_sz; + int num_mact_rows; struct net_device *hw_bridge_dev; u16 bridge_mask; From c0d7eccbc76115b7eb337956c03d47d6a889cf8c Mon Sep 17 00:00:00 2001 From: Vladimir Oltean Date: Mon, 4 May 2020 01:20:27 +0300 Subject: [PATCH 2/2] net: mscc: ocelot: ANA_AUTOAGE_AGE_PERIOD holds a value in seconds, not ms One may notice that automatically-learnt entries 'never' expire, even though the bridge configures the address age period at 300 seconds. Actually the value written to hardware corresponds to a time interval 1000 times higher than intended, i.e. 83 hours. Fixes: a556c76adc05 ("net: mscc: Add initial Ocelot switch support") Signed-off-by: Vladimir Oltean Reviewed-by: Florian Faineli Signed-off-by: David S. Miller --- drivers/net/ethernet/mscc/ocelot.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/mscc/ocelot.c b/drivers/net/ethernet/mscc/ocelot.c index 887b3cc88354..02350c3d9d01 100644 --- a/drivers/net/ethernet/mscc/ocelot.c +++ b/drivers/net/ethernet/mscc/ocelot.c @@ -1451,8 +1451,15 @@ static void ocelot_port_attr_stp_state_set(struct ocelot *ocelot, int port, void ocelot_set_ageing_time(struct ocelot *ocelot, unsigned int msecs) { - ocelot_write(ocelot, ANA_AUTOAGE_AGE_PERIOD(msecs / 2), - ANA_AUTOAGE); + unsigned int age_period = ANA_AUTOAGE_AGE_PERIOD(msecs / 2000); + + /* Setting AGE_PERIOD to zero effectively disables automatic aging, + * which is clearly not what our intention is. So avoid that. + */ + if (!age_period) + age_period = 1; + + ocelot_rmw(ocelot, age_period, ANA_AUTOAGE_AGE_PERIOD_M, ANA_AUTOAGE); } EXPORT_SYMBOL(ocelot_set_ageing_time);