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realtek: dsa: Record number of supported MSTs

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Each SoC supports a different number of MST(I)s. The code must know this
limitation to correctly reject unsupported MSTIs or to allocate a large
enough mapping table.

Signed-off-by: Sven Eckelmann <se@simonwunderlich.de>
Link: https://github.com/openwrt/openwrt/pull/20421
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
This commit is contained in:
Sven Eckelmann 2025-10-27 15:29:01 +01:00 • committed by Hauke Mehrtens
parent 9c2e8d6cef
commit 280cf19cdb
2 changed files with 5 additions and 0 deletions
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4
target/linux/realtek/files-6.12/drivers/net/dsa/rtl83xx/common.c
View file

@ -1467,6 +1467,7 @@ static int __init rtl83xx_sw_probe(struct platform_device *pdev)
rtl8380_get_version(priv);
priv->ds->num_lag_ids = 8;
priv->l2_bucket_size = 4;
priv->n_mst = 64;
priv->n_pie_blocks = 12;
priv->port_ignore = 0x1f;
priv->n_counters = 128;
@ -1483,6 +1484,7 @@ static int __init rtl83xx_sw_probe(struct platform_device *pdev)
rtl8390_get_version(priv);
priv->ds->num_lag_ids = 16;
priv->l2_bucket_size = 4;
priv->n_mst = 256;
priv->n_pie_blocks = 18;
priv->port_ignore = 0x3f;
priv->n_counters = 1024;
@ -1503,6 +1505,7 @@ static int __init rtl83xx_sw_probe(struct platform_device *pdev)
priv->ds->num_lag_ids = 16;
sw_w32(0, RTL930X_ST_CTRL);
priv->l2_bucket_size = 8;
priv->n_mst = 64;
priv->n_pie_blocks = 16;
priv->port_ignore = 0x3f;
priv->n_counters = 2048;
@ -1523,6 +1526,7 @@ static int __init rtl83xx_sw_probe(struct platform_device *pdev)
priv->ds->num_lag_ids = 16;
sw_w32(0, RTL931x_ST_CTRL);
priv->l2_bucket_size = 8;
priv->n_mst = 128;
priv->n_pie_blocks = 16;
priv->port_ignore = 0x3f;
priv->n_counters = 2048;

1
target/linux/realtek/files-6.12/drivers/net/dsa/rtl83xx/rtl838x.h
View file

@ -1215,6 +1215,7 @@ struct rtl838x_switch_priv {
u64 irq_mask;
u32 fib_entries;
int l2_bucket_size;
u16 n_mst;
struct dentry *dbgfs_dir;
/** @lags_port_members: Port (bit) is part of a specific LAG */