This is a note to let you know that I've just added the patch titled net: dsa: ocelot: the MAC table on Felix is twice as large to the 5.6-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: net-dsa-ocelot-the-mac-table-on-felix-is-twice-as-la.patch and it can be found in the queue-5.6 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 2dc10caab9c946258295051933cc1a13a3201cd1 Author: Vladimir Oltean <vladimir.oltean@xxxxxxx> Date: Mon May 4 01:20:26 2020 +0300 net: dsa: ocelot: the MAC table on Felix is twice as large [ Upstream commit 21ce7f3e16fbf89faaf149cfe0f730edfc553914 ] 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 <vladimir.oltean@xxxxxxx> Reviewed-by: Florian Fainelli <f.fainelli@xxxxxxxxx> Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/drivers/net/dsa/ocelot/felix.c b/drivers/net/dsa/ocelot/felix.c index 9e895ab586d5a..a7780c06fa65b 100644 --- a/drivers/net/dsa/ocelot/felix.c +++ b/drivers/net/dsa/ocelot/felix.c @@ -397,6 +397,7 @@ 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->ops = felix->info->ops; port_phy_modes = kcalloc(num_phys_ports, sizeof(phy_interface_t), diff --git a/drivers/net/dsa/ocelot/felix.h b/drivers/net/dsa/ocelot/felix.h index 3a7580015b621..8771d40324f10 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 2c812b481778c..edc1a67c002b6 100644 --- a/drivers/net/dsa/ocelot/felix_vsc9959.c +++ b/drivers/net/dsa/ocelot/felix_vsc9959.c @@ -1090,6 +1090,7 @@ struct felix_info felix_info_vsc9959 = { .stats_layout = vsc9959_stats_layout, .num_stats = ARRAY_SIZE(vsc9959_stats_layout), .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 b14286dc49fb5..33ef8690eafe9 100644 --- a/drivers/net/ethernet/mscc/ocelot.c +++ b/drivers/net/ethernet/mscc/ocelot.c @@ -1016,10 +1016,8 @@ 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 b88b5899b2273..7d4fd1b6addaf 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 f8e1955c86f14..7b5382e10bd29 100644 --- a/include/soc/mscc/ocelot.h +++ b/include/soc/mscc/ocelot.h @@ -437,6 +437,7 @@ struct ocelot { unsigned int num_stats; int shared_queue_sz; + int num_mact_rows; struct net_device *hw_bridge_dev; u16 bridge_mask;