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ramips: don't clobber vlans with remapped vid on mt7530/762x switches 

Avoid overwriting vlan entries with remapped vid in later iterations of
the vlan enumeration loop of mt7530_apply_config().

Fix the problem by refactoring the code to first reset the entire table,
then reprogram only vlans with members to prevent overwriting configured
vlans with unconfigured ones.

Fixes FS#1147, FS#1341

Signed-off-by: Jo-Philipp Wich <jo@mein.io>
This commit is contained in:
Jo-Philipp Wich 2018-02-11 20:24:37 +01:00
parent b9aca834e8
commit bb4002c79d
1 changed files with 53 additions and 36 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

89
target/linux/ramips/files-4.9/drivers/net/ethernet/mtk/mt7530.c
View File

@ -497,6 +497,52 @@ mt7530_get_vid(struct switch_dev *dev, const struct switch_attr *attr,
return 0;
}
static void
mt7530_write_vlan_entry(struct mt7530_priv *priv, int vlan, u16 vid,
u8 ports, u8 etags)
{
int port;
u32 val;
#ifndef CONFIG_SOC_MT7621
/* vid of vlan */
val = mt7530_r32(priv, REG_ESW_VLAN_VTIM(vlan));
if (vlan % 2 == 0) {
val &= 0xfff000;
val |= vid;
} else {
val &= 0xfff;
val |= (vid << 12);
}
mt7530_w32(priv, REG_ESW_VLAN_VTIM(vlan), val);
#endif
/* vlan port membership */
if (ports)
mt7530_w32(priv, REG_ESW_VLAN_VAWD1, REG_ESW_VLAN_VAWD1_IVL_MAC |
REG_ESW_VLAN_VAWD1_VTAG_EN | (ports << 16) |
REG_ESW_VLAN_VAWD1_VALID);
else
mt7530_w32(priv, REG_ESW_VLAN_VAWD1, 0);
/* egress mode */
val = 0;
for (port = 0; port < MT7530_NUM_PORTS; port++) {
if (etags & BIT(port))
val |= ETAG_CTRL_TAG << (port * 2);
else
val |= ETAG_CTRL_UNTAG << (port * 2);
}
mt7530_w32(priv, REG_ESW_VLAN_VAWD2, val);
/* write to vlan table */
#ifdef CONFIG_SOC_MT7621
mt7530_vtcr(priv, 1, vid);
#else
mt7530_vtcr(priv, 1, vlan);
#endif
}
static int
mt7530_apply_config(struct switch_dev *dev)
{
@ -553,48 +599,19 @@ mt7530_apply_config(struct switch_dev *dev)
mt7530_w32(priv, REG_ESW_PORT_PVC(i), pvc_mode);
}
/* first clear the swtich vlan table */
for (i = 0; i < MT7530_NUM_VLANS; i++)
mt7530_write_vlan_entry(priv, i, i, 0, 0);
/* now program only vlans with members to avoid
clobbering remapped entries in later iterations */
for (i = 0; i < MT7530_NUM_VLANS; i++) {
u16 vid = priv->vlan_entries[i].vid;
u8 member = priv->vlan_entries[i].member;
u8 etags = priv->vlan_entries[i].etags;
u32 val;
#ifndef CONFIG_SOC_MT7621
/* vid of vlan */
val = mt7530_r32(priv, REG_ESW_VLAN_VTIM(i));
if (i % 2 == 0) {
val &= 0xfff000;
val |= vid;
} else {
val &= 0xfff;
val |= (vid << 12);
}
mt7530_w32(priv, REG_ESW_VLAN_VTIM(i), val);
#endif
/* vlan port membership */
if (member)
mt7530_w32(priv, REG_ESW_VLAN_VAWD1, REG_ESW_VLAN_VAWD1_IVL_MAC |
REG_ESW_VLAN_VAWD1_VTAG_EN | (member << 16) |
REG_ESW_VLAN_VAWD1_VALID);
else
mt7530_w32(priv, REG_ESW_VLAN_VAWD1, 0);
/* egress mode */
val = 0;
for (j = 0; j < MT7530_NUM_PORTS; j++) {
if (etags & BIT(j))
val |= ETAG_CTRL_TAG << (j * 2);
else
val |= ETAG_CTRL_UNTAG << (j * 2);
}
mt7530_w32(priv, REG_ESW_VLAN_VAWD2, val);
/* write to vlan table */
#ifdef CONFIG_SOC_MT7621
mt7530_vtcr(priv, 1, vid);
#else
mt7530_vtcr(priv, 1, i);
#endif
mt7530_write_vlan_entry(priv, i, vid, member, etags);
}
/* Port Default PVID */