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generic: backport 5.16 RTL8366RB improvements

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The prerequisite DSA changes for the nice RTL8366RB improvements
are already backported so bring back these changes as well.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Linus Walleij 2022-04-11 23:46:17 +02:00 committed by Petr Štetiar
parent a001630a1a
commit 30d2fcffeb
8 changed files with 920 additions and 0 deletions
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141
target/linux/generic/backport-5.15/774-v5.16-01-net-dsa-rtl8366rb-Support-bridge-offloading.patch Normal file
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@ -0,0 +1,141 @@
From c9111895fd38dadf125e07be627778a9950d8d77 Mon Sep 17 00:00:00 2001
From: DENG Qingfang <dqfext@gmail.com>
Date: Sun, 26 Sep 2021 00:59:24 +0200
Subject: [PATCH 01/11] net: dsa: rtl8366rb: Support bridge offloading
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Use port isolation registers to configure bridge offloading.
Tested on the D-Link DIR-685, switching between ports and
sniffing ports to make sure no packets leak.
Cc: Vladimir Oltean <olteanv@gmail.com>
Cc: Mauri Sandberg <sandberg@mailfence.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Reviewed-by: Alvin Šipraga <alsi@bang-olufsen.dk>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: DENG Qingfang <dqfext@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/dsa/rtl8366rb.c | 86 +++++++++++++++++++++++++++++++++++++
1 file changed, 86 insertions(+)
--- a/drivers/net/dsa/rtl8366rb.c
+++ b/drivers/net/dsa/rtl8366rb.c
@@ -300,6 +300,13 @@
#define RTL8366RB_INTERRUPT_STATUS_REG 0x0442
#define RTL8366RB_NUM_INTERRUPT 14 /* 0..13 */
+/* Port isolation registers */
+#define RTL8366RB_PORT_ISO_BASE 0x0F08
+#define RTL8366RB_PORT_ISO(pnum) (RTL8366RB_PORT_ISO_BASE + (pnum))
+#define RTL8366RB_PORT_ISO_EN BIT(0)
+#define RTL8366RB_PORT_ISO_PORTS_MASK GENMASK(7, 1)
+#define RTL8366RB_PORT_ISO_PORTS(pmask) ((pmask) << 1)
+
/* bits 0..5 enable force when cleared */
#define RTL8366RB_MAC_FORCE_CTRL_REG 0x0F11
@@ -835,6 +842,21 @@ static int rtl8366rb_setup(struct dsa_sw
if (ret)
return ret;
+ /* Isolate all user ports so they can only send packets to itself and the CPU port */
+ for (i = 0; i < RTL8366RB_PORT_NUM_CPU; i++) {
+ ret = regmap_write(smi->map, RTL8366RB_PORT_ISO(i),
+ RTL8366RB_PORT_ISO_PORTS(BIT(RTL8366RB_PORT_NUM_CPU)) |
+ RTL8366RB_PORT_ISO_EN);
+ if (ret)
+ return ret;
+ }
+ /* CPU port can send packets to all ports */
+ ret = regmap_write(smi->map, RTL8366RB_PORT_ISO(RTL8366RB_PORT_NUM_CPU),
+ RTL8366RB_PORT_ISO_PORTS(dsa_user_ports(ds)) |
+ RTL8366RB_PORT_ISO_EN);
+ if (ret)
+ return ret;
+
/* Set up the "green ethernet" feature */
ret = rtl8366rb_jam_table(rtl8366rb_green_jam,
ARRAY_SIZE(rtl8366rb_green_jam), smi, false);
@@ -1127,6 +1149,68 @@ rtl8366rb_port_disable(struct dsa_switch
rb8366rb_set_port_led(smi, port, false);
}
+static int
+rtl8366rb_port_bridge_join(struct dsa_switch *ds, int port,
+ struct net_device *bridge)
+{
+ struct realtek_smi *smi = ds->priv;
+ unsigned int port_bitmap = 0;
+ int ret, i;
+
+ /* Loop over all other ports than the current one */
+ for (i = 0; i < RTL8366RB_PORT_NUM_CPU; i++) {
+ /* Current port handled last */
+ if (i == port)
+ continue;
+ /* Not on this bridge */
+ if (dsa_to_port(ds, i)->bridge_dev != bridge)
+ continue;
+ /* Join this port to each other port on the bridge */
+ ret = regmap_update_bits(smi->map, RTL8366RB_PORT_ISO(i),
+ RTL8366RB_PORT_ISO_PORTS(BIT(port)),
+ RTL8366RB_PORT_ISO_PORTS(BIT(port)));
+ if (ret)
+ dev_err(smi->dev, "failed to join port %d\n", port);
+
+ port_bitmap |= BIT(i);
+ }
+
+ /* Set the bits for the ports we can access */
+ return regmap_update_bits(smi->map, RTL8366RB_PORT_ISO(port),
+ RTL8366RB_PORT_ISO_PORTS(port_bitmap),
+ RTL8366RB_PORT_ISO_PORTS(port_bitmap));
+}
+
+static void
+rtl8366rb_port_bridge_leave(struct dsa_switch *ds, int port,
+ struct net_device *bridge)
+{
+ struct realtek_smi *smi = ds->priv;
+ unsigned int port_bitmap = 0;
+ int ret, i;
+
+ /* Loop over all other ports than this one */
+ for (i = 0; i < RTL8366RB_PORT_NUM_CPU; i++) {
+ /* Current port handled last */
+ if (i == port)
+ continue;
+ /* Not on this bridge */
+ if (dsa_to_port(ds, i)->bridge_dev != bridge)
+ continue;
+ /* Remove this port from any other port on the bridge */
+ ret = regmap_update_bits(smi->map, RTL8366RB_PORT_ISO(i),
+ RTL8366RB_PORT_ISO_PORTS(BIT(port)), 0);
+ if (ret)
+ dev_err(smi->dev, "failed to leave port %d\n", port);
+
+ port_bitmap |= BIT(i);
+ }
+
+ /* Clear the bits for the ports we can not access, leave ourselves */
+ regmap_update_bits(smi->map, RTL8366RB_PORT_ISO(port),
+ RTL8366RB_PORT_ISO_PORTS(port_bitmap), 0);
+}
+
static int rtl8366rb_change_mtu(struct dsa_switch *ds, int port, int new_mtu)
{
struct realtek_smi *smi = ds->priv;
@@ -1510,6 +1594,8 @@ static const struct dsa_switch_ops rtl83
.get_strings = rtl8366_get_strings,
.get_ethtool_stats = rtl8366_get_ethtool_stats,
.get_sset_count = rtl8366_get_sset_count,
+ .port_bridge_join = rtl8366rb_port_bridge_join,
+ .port_bridge_leave = rtl8366rb_port_bridge_leave,
.port_vlan_filtering = rtl8366_vlan_filtering,
.port_vlan_add = rtl8366_vlan_add,
.port_vlan_del = rtl8366_vlan_del,

118
target/linux/generic/backport-5.15/774-v5.16-02-net-dsa-rtl8366-Drop-custom-VLAN-set-up.patch Normal file
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From 96cf10a8e7297065459473c081a6fb6432a22312 Mon Sep 17 00:00:00 2001
From: Linus Walleij <linus.walleij@linaro.org>
Date: Sun, 26 Sep 2021 00:59:25 +0200
Subject: [PATCH 02/11] net: dsa: rtl8366: Drop custom VLAN set-up
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
This hacky default VLAN setup was done in order to direct
packets to the right ports and provide port isolation, both
which we now support properly using custom tags and proper
bridge port isolation.
We can drop the custom VLAN code and leave all VLAN handling
alone, as users expect things to be. We can also drop
ds->configure_vlan_while_not_filtering = false; and let
the core deal with any VLANs it wants.
Cc: Mauri Sandberg <sandberg@mailfence.com>
Cc: DENG Qingfang <dqfext@gmail.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Reviewed-by: Alvin Šipraga <alsi@bang-olufsen.dk>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/dsa/realtek-smi-core.h | 1 -
drivers/net/dsa/rtl8366.c | 48 ------------------------------
drivers/net/dsa/rtl8366rb.c | 4 +--
3 files changed, 1 insertion(+), 52 deletions(-)
--- a/drivers/net/dsa/realtek-smi-core.h
+++ b/drivers/net/dsa/realtek-smi-core.h
@@ -129,7 +129,6 @@ int rtl8366_set_pvid(struct realtek_smi
int rtl8366_enable_vlan4k(struct realtek_smi *smi, bool enable);
int rtl8366_enable_vlan(struct realtek_smi *smi, bool enable);
int rtl8366_reset_vlan(struct realtek_smi *smi);
-int rtl8366_init_vlan(struct realtek_smi *smi);
int rtl8366_vlan_filtering(struct dsa_switch *ds, int port, bool vlan_filtering,
struct netlink_ext_ack *extack);
int rtl8366_vlan_add(struct dsa_switch *ds, int port,
--- a/drivers/net/dsa/rtl8366.c
+++ b/drivers/net/dsa/rtl8366.c
@@ -292,54 +292,6 @@ int rtl8366_reset_vlan(struct realtek_sm
}
EXPORT_SYMBOL_GPL(rtl8366_reset_vlan);
-int rtl8366_init_vlan(struct realtek_smi *smi)
-{
- int port;
- int ret;
-
- ret = rtl8366_reset_vlan(smi);
- if (ret)
- return ret;
-
- /* Loop over the available ports, for each port, associate
- * it with the VLAN (port+1)
- */
- for (port = 0; port < smi->num_ports; port++) {
- u32 mask;
-
- if (port == smi->cpu_port)
- /* For the CPU port, make all ports members of this
- * VLAN.
- */
- mask = GENMASK((int)smi->num_ports - 1, 0);
- else
- /* For all other ports, enable itself plus the
- * CPU port.
- */
- mask = BIT(port) | BIT(smi->cpu_port);
-
- /* For each port, set the port as member of VLAN (port+1)
- * and untagged, except for the CPU port: the CPU port (5) is
- * member of VLAN 6 and so are ALL the other ports as well.
- * Use filter 0 (no filter).
- */
- dev_info(smi->dev, "VLAN%d port mask for port %d, %08x\n",
- (port + 1), port, mask);
- ret = rtl8366_set_vlan(smi, (port + 1), mask, mask, 0);
- if (ret)
- return ret;
-
- dev_info(smi->dev, "VLAN%d port %d, PVID set to %d\n",
- (port + 1), port, (port + 1));
- ret = rtl8366_set_pvid(smi, port, (port + 1));
- if (ret)
- return ret;
- }
-
- return rtl8366_enable_vlan(smi, true);
-}
-EXPORT_SYMBOL_GPL(rtl8366_init_vlan);
-
int rtl8366_vlan_filtering(struct dsa_switch *ds, int port, bool vlan_filtering,
struct netlink_ext_ack *extack)
{
--- a/drivers/net/dsa/rtl8366rb.c
+++ b/drivers/net/dsa/rtl8366rb.c
@@ -985,7 +985,7 @@ static int rtl8366rb_setup(struct dsa_sw
return ret;
}
- ret = rtl8366_init_vlan(smi);
+ ret = rtl8366_reset_vlan(smi);
if (ret)
return ret;
@@ -999,8 +999,6 @@ static int rtl8366rb_setup(struct dsa_sw
return -ENODEV;
}
- ds->configure_vlan_while_not_filtering = false;
-
return 0;
}

270
target/linux/generic/backport-5.15/774-v5.16-03-net-dsa-rtl8366rb-Rewrite-weird-VLAN-filering-enable.patch Normal file
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@ -0,0 +1,270 @@
From 7028f54b620f8df344b18e46e4a78e266091ab45 Mon Sep 17 00:00:00 2001
From: Linus Walleij <linus.walleij@linaro.org>
Date: Sun, 26 Sep 2021 00:59:26 +0200
Subject: [PATCH 03/11] net: dsa: rtl8366rb: Rewrite weird VLAN filering
enablement
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
While we were defining one VLAN per port for isolating the ports
the port_vlan_filtering() callback was implemented to enable a
VLAN on the port + 1. This function makes no sense, not only is
it incomplete as it only enables the VLAN, it doesn't do what
the callback is supposed to do, which is to selectively enable
and disable filtering on a certain port.
Implement the correct callback: we have two registers dealing
with filtering on the RTL9366RB, so we implement an ASIC-specific
callback and implement filering using the register bit that makes
the switch drop frames if the port is not in the VLAN member set.
The DSA documentation Documentation/networking/switchdev.rst states:
When the bridge has VLAN filtering enabled and a PVID is not
configured on the ingress port, untagged and 802.1p tagged
packets must be dropped. When the bridge has VLAN filtering
enabled and a PVID exists on the ingress port, untagged and
priority-tagged packets must be accepted and forwarded according
to the bridge's port membership of the PVID VLAN. When the
bridge has VLAN filtering disabled, the presence/lack of a
PVID should not influence the packet forwarding decision.
To comply with this, we add two arrays of bool in the RTL8366RB
state that keeps track of if filtering and PVID is enabled or
not for each port. We then add code such that whenever filtering
or PVID changes, we update the filter according to the
specification.
Cc: Vladimir Oltean <olteanv@gmail.com>
Cc: Mauri Sandberg <sandberg@mailfence.com>
Cc: Alvin Šipraga <alsi@bang-olufsen.dk>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: DENG Qingfang <dqfext@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/dsa/realtek-smi-core.h | 2 -
drivers/net/dsa/rtl8366.c | 35 ----------
drivers/net/dsa/rtl8366rb.c | 102 +++++++++++++++++++++++++++--
3 files changed, 95 insertions(+), 44 deletions(-)
--- a/drivers/net/dsa/realtek-smi-core.h
+++ b/drivers/net/dsa/realtek-smi-core.h
@@ -129,8 +129,6 @@ int rtl8366_set_pvid(struct realtek_smi
int rtl8366_enable_vlan4k(struct realtek_smi *smi, bool enable);
int rtl8366_enable_vlan(struct realtek_smi *smi, bool enable);
int rtl8366_reset_vlan(struct realtek_smi *smi);
-int rtl8366_vlan_filtering(struct dsa_switch *ds, int port, bool vlan_filtering,
- struct netlink_ext_ack *extack);
int rtl8366_vlan_add(struct dsa_switch *ds, int port,
const struct switchdev_obj_port_vlan *vlan,
struct netlink_ext_ack *extack);
--- a/drivers/net/dsa/rtl8366.c
+++ b/drivers/net/dsa/rtl8366.c
@@ -292,41 +292,6 @@ int rtl8366_reset_vlan(struct realtek_sm
}
EXPORT_SYMBOL_GPL(rtl8366_reset_vlan);
-int rtl8366_vlan_filtering(struct dsa_switch *ds, int port, bool vlan_filtering,
- struct netlink_ext_ack *extack)
-{
- struct realtek_smi *smi = ds->priv;
- struct rtl8366_vlan_4k vlan4k;
- int ret;
-
- /* Use VLAN nr port + 1 since VLAN0 is not valid */
- if (!smi->ops->is_vlan_valid(smi, port + 1))
- return -EINVAL;
-
- dev_info(smi->dev, "%s filtering on port %d\n",
- vlan_filtering ? "enable" : "disable",
- port);
-
- /* TODO:
- * The hardware support filter ID (FID) 0..7, I have no clue how to
- * support this in the driver when the callback only says on/off.
- */
- ret = smi->ops->get_vlan_4k(smi, port + 1, &vlan4k);
- if (ret)
- return ret;
-
- /* Just set the filter to FID 1 for now then */
- ret = rtl8366_set_vlan(smi, port + 1,
- vlan4k.member,
- vlan4k.untag,
- 1);
- if (ret)
- return ret;
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(rtl8366_vlan_filtering);
-
int rtl8366_vlan_add(struct dsa_switch *ds, int port,
const struct switchdev_obj_port_vlan *vlan,
struct netlink_ext_ack *extack)
--- a/drivers/net/dsa/rtl8366rb.c
+++ b/drivers/net/dsa/rtl8366rb.c
@@ -143,6 +143,21 @@
#define RTL8366RB_PHY_NO_OFFSET 9
#define RTL8366RB_PHY_NO_MASK (0x1f << 9)
+/* VLAN Ingress Control Register 1, one bit per port.
+ * bit 0 .. 5 will make the switch drop ingress frames without
+ * VID such as untagged or priority-tagged frames for respective
+ * port.
+ * bit 6 .. 11 will make the switch drop ingress frames carrying
+ * a C-tag with VID != 0 for respective port.
+ */
+#define RTL8366RB_VLAN_INGRESS_CTRL1_REG 0x037E
+#define RTL8366RB_VLAN_INGRESS_CTRL1_DROP(port) (BIT((port)) | BIT((port) + 6))
+
+/* VLAN Ingress Control Register 2, one bit per port.
+ * bit0 .. bit5 will make the switch drop all ingress frames with
+ * a VLAN classification that does not include the port is in its
+ * member set.
+ */
#define RTL8366RB_VLAN_INGRESS_CTRL2_REG 0x037f
/* LED control registers */
@@ -321,9 +336,13 @@
/**
* struct rtl8366rb - RTL8366RB-specific data
* @max_mtu: per-port max MTU setting
+ * @pvid_enabled: if PVID is set for respective port
+ * @vlan_filtering: if VLAN filtering is enabled for respective port
*/
struct rtl8366rb {
unsigned int max_mtu[RTL8366RB_NUM_PORTS];
+ bool pvid_enabled[RTL8366RB_NUM_PORTS];
+ bool vlan_filtering[RTL8366RB_NUM_PORTS];
};
static struct rtl8366_mib_counter rtl8366rb_mib_counters[] = {
@@ -933,11 +952,13 @@ static int rtl8366rb_setup(struct dsa_sw
if (ret)
return ret;
- /* Discard VLAN tagged packets if the port is not a member of
- * the VLAN with which the packets is associated.
- */
+ /* Accept all packets by default, we enable filtering on-demand */
+ ret = regmap_write(smi->map, RTL8366RB_VLAN_INGRESS_CTRL1_REG,
+ 0);
+ if (ret)
+ return ret;
ret = regmap_write(smi->map, RTL8366RB_VLAN_INGRESS_CTRL2_REG,
- RTL8366RB_PORT_ALL);
+ 0);
if (ret)
return ret;
@@ -1209,6 +1230,53 @@ rtl8366rb_port_bridge_leave(struct dsa_s
RTL8366RB_PORT_ISO_PORTS(port_bitmap), 0);
}
+/**
+ * rtl8366rb_drop_untagged() - make the switch drop untagged and C-tagged frames
+ * @smi: SMI state container
+ * @port: the port to drop untagged and C-tagged frames on
+ * @drop: whether to drop or pass untagged and C-tagged frames
+ */
+static int rtl8366rb_drop_untagged(struct realtek_smi *smi, int port, bool drop)
+{
+ return regmap_update_bits(smi->map, RTL8366RB_VLAN_INGRESS_CTRL1_REG,
+ RTL8366RB_VLAN_INGRESS_CTRL1_DROP(port),
+ drop ? RTL8366RB_VLAN_INGRESS_CTRL1_DROP(port) : 0);
+}
+
+static int rtl8366rb_vlan_filtering(struct dsa_switch *ds, int port,
+ bool vlan_filtering,
+ struct netlink_ext_ack *extack)
+{
+ struct realtek_smi *smi = ds->priv;
+ struct rtl8366rb *rb;
+ int ret;
+
+ rb = smi->chip_data;
+
+ dev_dbg(smi->dev, "port %d: %s VLAN filtering\n", port,
+ vlan_filtering ? "enable" : "disable");
+
+ /* If the port is not in the member set, the frame will be dropped */
+ ret = regmap_update_bits(smi->map, RTL8366RB_VLAN_INGRESS_CTRL2_REG,
+ BIT(port), vlan_filtering ? BIT(port) : 0);
+ if (ret)
+ return ret;
+
+ /* Keep track if filtering is enabled on each port */
+ rb->vlan_filtering[port] = vlan_filtering;
+
+ /* If VLAN filtering is enabled and PVID is also enabled, we must
+ * not drop any untagged or C-tagged frames. If we turn off VLAN
+ * filtering on a port, we need ti accept any frames.
+ */
+ if (vlan_filtering)
+ ret = rtl8366rb_drop_untagged(smi, port, !rb->pvid_enabled[port]);
+ else
+ ret = rtl8366rb_drop_untagged(smi, port, false);
+
+ return ret;
+}
+
static int rtl8366rb_change_mtu(struct dsa_switch *ds, int port, int new_mtu)
{
struct realtek_smi *smi = ds->priv;
@@ -1420,14 +1488,34 @@ static int rtl8366rb_get_mc_index(struct
static int rtl8366rb_set_mc_index(struct realtek_smi *smi, int port, int index)
{
+ struct rtl8366rb *rb;
+ bool pvid_enabled;
+ int ret;
+
+ rb = smi->chip_data;
+ pvid_enabled = !!index;
+
if (port >= smi->num_ports || index >= RTL8366RB_NUM_VLANS)
return -EINVAL;
- return regmap_update_bits(smi->map, RTL8366RB_PORT_VLAN_CTRL_REG(port),
+ ret = regmap_update_bits(smi->map, RTL8366RB_PORT_VLAN_CTRL_REG(port),
RTL8366RB_PORT_VLAN_CTRL_MASK <<
RTL8366RB_PORT_VLAN_CTRL_SHIFT(port),
(index & RTL8366RB_PORT_VLAN_CTRL_MASK) <<
RTL8366RB_PORT_VLAN_CTRL_SHIFT(port));
+ if (ret)
+ return ret;
+
+ rb->pvid_enabled[port] = pvid_enabled;
+
+ /* If VLAN filtering is enabled and PVID is also enabled, we must
+ * not drop any untagged or C-tagged frames. Make sure to update the
+ * filtering setting.
+ */
+ if (rb->vlan_filtering[port])
+ ret = rtl8366rb_drop_untagged(smi, port, !pvid_enabled);
+
+ return ret;
}
static bool rtl8366rb_is_vlan_valid(struct realtek_smi *smi, unsigned int vlan)
@@ -1437,7 +1525,7 @@ static bool rtl8366rb_is_vlan_valid(stru
if (smi->vlan4k_enabled)
max = RTL8366RB_NUM_VIDS - 1;
- if (vlan == 0 || vlan > max)
+ if (vlan > max)
return false;
return true;
@@ -1594,7 +1682,7 @@ static const struct dsa_switch_ops rtl83
.get_sset_count = rtl8366_get_sset_count,
.port_bridge_join = rtl8366rb_port_bridge_join,
.port_bridge_leave = rtl8366rb_port_bridge_leave,
- .port_vlan_filtering = rtl8366_vlan_filtering,
+ .port_vlan_filtering = rtl8366rb_vlan_filtering,
.port_vlan_add = rtl8366_vlan_add,
.port_vlan_del = rtl8366_vlan_del,
.port_enable = rtl8366rb_port_enable,

51
target/linux/generic/backport-5.15/774-v5.16-06-net-dsa-rtl8366-Drop-and-depromote-pointless-prints.patch Normal file
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@ -0,0 +1,51 @@
From ddb59a5dc42714999c335dab4bf256125ba3120c Mon Sep 17 00:00:00 2001
From: Linus Walleij <linus.walleij@linaro.org>
Date: Sun, 26 Sep 2021 00:59:29 +0200
Subject: [PATCH 06/11] net: dsa: rtl8366: Drop and depromote pointless prints
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
We don't need a message for every VLAN association, dbg
is fine. The message about adding the DSA or CPU
port to a VLAN is directly misleading, this is perfectly
fine.
Cc: Vladimir Oltean <olteanv@gmail.com>
Cc: Mauri Sandberg <sandberg@mailfence.com>
Cc: DENG Qingfang <dqfext@gmail.com>
Reviewed-by: Alvin Šipraga <alsi@bang-olufsen.dk>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/dsa/rtl8366.c | 11 ++++-------
1 file changed, 4 insertions(+), 7 deletions(-)
--- a/drivers/net/dsa/rtl8366.c
+++ b/drivers/net/dsa/rtl8366.c
@@ -318,12 +318,9 @@ int rtl8366_vlan_add(struct dsa_switch *
return ret;
}
- dev_info(smi->dev, "add VLAN %d on port %d, %s, %s\n",
- vlan->vid, port, untagged ? "untagged" : "tagged",
- pvid ? " PVID" : "no PVID");
-
- if (dsa_is_dsa_port(ds, port) || dsa_is_cpu_port(ds, port))
- dev_err(smi->dev, "port is DSA or CPU port\n");
+ dev_dbg(smi->dev, "add VLAN %d on port %d, %s, %s\n",
+ vlan->vid, port, untagged ? "untagged" : "tagged",
+ pvid ? "PVID" : "no PVID");
member |= BIT(port);
@@ -356,7 +353,7 @@ int rtl8366_vlan_del(struct dsa_switch *
struct realtek_smi *smi = ds->priv;
int ret, i;
- dev_info(smi->dev, "del VLAN %04x on port %d\n", vlan->vid, port);
+ dev_dbg(smi->dev, "del VLAN %d on port %d\n", vlan->vid, port);
for (i = 0; i < smi->num_vlan_mc; i++) {
struct rtl8366_vlan_mc vlanmc;

61
target/linux/generic/backport-5.15/774-v5.16-07-net-dsa-rtl8366rb-Use-core-filtering-tracking.patch Normal file
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@ -0,0 +1,61 @@
From 5c9b66f3c8a3f72fa2a58e89a57c6d7afd550bf0 Mon Sep 17 00:00:00 2001
From: Linus Walleij <linus.walleij@linaro.org>
Date: Wed, 29 Sep 2021 13:23:22 +0200
Subject: [PATCH 07/11] net: dsa: rtl8366rb: Use core filtering tracking
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
We added a state variable to track whether a certain port
was VLAN filtering or not, but we can just inquire the DSA
core about this.
Cc: Vladimir Oltean <olteanv@gmail.com>
Cc: Mauri Sandberg <sandberg@mailfence.com>
Cc: DENG Qingfang <dqfext@gmail.com>
Cc: Alvin Šipraga <alsi@bang-olufsen.dk>
Cc: Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/dsa/rtl8366rb.c | 9 ++-------
1 file changed, 2 insertions(+), 7 deletions(-)
--- a/drivers/net/dsa/rtl8366rb.c
+++ b/drivers/net/dsa/rtl8366rb.c
@@ -337,12 +337,10 @@
* struct rtl8366rb - RTL8366RB-specific data
* @max_mtu: per-port max MTU setting
* @pvid_enabled: if PVID is set for respective port
- * @vlan_filtering: if VLAN filtering is enabled for respective port
*/
struct rtl8366rb {
unsigned int max_mtu[RTL8366RB_NUM_PORTS];
bool pvid_enabled[RTL8366RB_NUM_PORTS];
- bool vlan_filtering[RTL8366RB_NUM_PORTS];
};
static struct rtl8366_mib_counter rtl8366rb_mib_counters[] = {
@@ -1262,12 +1260,9 @@ static int rtl8366rb_vlan_filtering(stru
if (ret)
return ret;
- /* Keep track if filtering is enabled on each port */
- rb->vlan_filtering[port] = vlan_filtering;
-
/* If VLAN filtering is enabled and PVID is also enabled, we must
* not drop any untagged or C-tagged frames. If we turn off VLAN
- * filtering on a port, we need ti accept any frames.
+ * filtering on a port, we need to accept any frames.
*/
if (vlan_filtering)
ret = rtl8366rb_drop_untagged(smi, port, !rb->pvid_enabled[port]);
@@ -1512,7 +1507,7 @@ static int rtl8366rb_set_mc_index(struct
* not drop any untagged or C-tagged frames. Make sure to update the
* filtering setting.
*/
- if (rb->vlan_filtering[port])
+ if (dsa_port_is_vlan_filtering(dsa_to_port(smi->ds, port)))
ret = rtl8366rb_drop_untagged(smi, port, !pvid_enabled);
return ret;

115
target/linux/generic/backport-5.15/774-v5.16-08-net-dsa-rtl8366rb-Support-disabling-learning.patch Normal file
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@ -0,0 +1,115 @@
From 831a3d26bea0d14f8563eecf96def660a74a3000 Mon Sep 17 00:00:00 2001
From: Linus Walleij <linus.walleij@linaro.org>
Date: Tue, 5 Oct 2021 21:47:02 +0200
Subject: [PATCH 08/11] net: dsa: rtl8366rb: Support disabling learning
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
The RTL8366RB hardware supports disabling learning per-port
so let's make use of this feature. Rename some unfortunately
named registers in the process.
Suggested-by: Vladimir Oltean <olteanv@gmail.com>
Cc: Alvin Šipraga <alsi@bang-olufsen.dk>
Cc: Mauri Sandberg <sandberg@mailfence.com>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: DENG Qingfang <dqfext@gmail.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/dsa/rtl8366rb.c | 50 ++++++++++++++++++++++++++++++++-----
1 file changed, 44 insertions(+), 6 deletions(-)
--- a/drivers/net/dsa/rtl8366rb.c
+++ b/drivers/net/dsa/rtl8366rb.c
@@ -14,6 +14,7 @@
#include <linux/bitops.h>
#include <linux/etherdevice.h>
+#include <linux/if_bridge.h>
#include <linux/interrupt.h>
#include <linux/irqdomain.h>
#include <linux/irqchip/chained_irq.h>
@@ -42,9 +43,12 @@
/* Port Enable Control register */
#define RTL8366RB_PECR 0x0001
-/* Switch Security Control registers */
-#define RTL8366RB_SSCR0 0x0002
-#define RTL8366RB_SSCR1 0x0003
+/* Switch per-port learning disablement register */
+#define RTL8366RB_PORT_LEARNDIS_CTRL 0x0002
+
+/* Security control, actually aging register */
+#define RTL8366RB_SECURITY_CTRL 0x0003
+
#define RTL8366RB_SSCR2 0x0004
#define RTL8366RB_SSCR2_DROP_UNKNOWN_DA BIT(0)
@@ -927,13 +931,14 @@ static int rtl8366rb_setup(struct dsa_sw
/* layer 2 size, see rtl8366rb_change_mtu() */
rb->max_mtu[i] = 1532;
- /* Enable learning for all ports */
- ret = regmap_write(smi->map, RTL8366RB_SSCR0, 0);
+ /* Disable learning for all ports */
+ ret = regmap_write(smi->map, RTL8366RB_PORT_LEARNDIS_CTRL,
+ RTL8366RB_PORT_ALL);
if (ret)
return ret;
/* Enable auto ageing for all ports */
- ret = regmap_write(smi->map, RTL8366RB_SSCR1, 0);
+ ret = regmap_write(smi->map, RTL8366RB_SECURITY_CTRL, 0);
if (ret)
return ret;
@@ -1272,6 +1277,37 @@ static int rtl8366rb_vlan_filtering(stru
return ret;
}
+static int
+rtl8366rb_port_pre_bridge_flags(struct dsa_switch *ds, int port,
+ struct switchdev_brport_flags flags,
+ struct netlink_ext_ack *extack)
+{
+ /* We support enabling/disabling learning */
+ if (flags.mask & ~(BR_LEARNING))
+ return -EINVAL;
+
+ return 0;
+}
+
+static int
+rtl8366rb_port_bridge_flags(struct dsa_switch *ds, int port,
+ struct switchdev_brport_flags flags,
+ struct netlink_ext_ack *extack)
+{
+ struct realtek_smi *smi = ds->priv;
+ int ret;
+
+ if (flags.mask & BR_LEARNING) {
+ ret = regmap_update_bits(smi->map, RTL8366RB_PORT_LEARNDIS_CTRL,
+ BIT(port),
+ (flags.val & BR_LEARNING) ? 0 : BIT(port));
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
static int rtl8366rb_change_mtu(struct dsa_switch *ds, int port, int new_mtu)
{
struct realtek_smi *smi = ds->priv;
@@ -1682,6 +1718,8 @@ static const struct dsa_switch_ops rtl83
.port_vlan_del = rtl8366_vlan_del,
.port_enable = rtl8366rb_port_enable,
.port_disable = rtl8366rb_port_disable,
+ .port_pre_bridge_flags = rtl8366rb_port_pre_bridge_flags,
+ .port_bridge_flags = rtl8366rb_port_bridge_flags,
.port_change_mtu = rtl8366rb_change_mtu,
.port_max_mtu = rtl8366rb_max_mtu,
};

57
target/linux/generic/backport-5.15/774-v5.16-09-net-dsa-rtl8366rb-Support-fast-aging.patch Normal file
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@ -0,0 +1,57 @@
From 8eb13420eb9ab4a4e2ebd612bf5dc9dba0039236 Mon Sep 17 00:00:00 2001
From: Linus Walleij <linus.walleij@linaro.org>
Date: Tue, 5 Oct 2021 21:47:03 +0200
Subject: [PATCH 09/11] net: dsa: rtl8366rb: Support fast aging
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
This implements fast aging per-port using the special "security"
register, which will flush any learned L2 LUT entries on a port.
The vendor API just enabled setting and clearing this bit, so
we set it to age out any entries on the port and then we clear
it again.
Suggested-by: Vladimir Oltean <olteanv@gmail.com>
Cc: Mauri Sandberg <sandberg@mailfence.com>
Cc: DENG Qingfang <dqfext@gmail.com>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Alvin Šipraga <alsi@bang-olufsen.dk>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/dsa/rtl8366rb.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
--- a/drivers/net/dsa/rtl8366rb.c
+++ b/drivers/net/dsa/rtl8366rb.c
@@ -1308,6 +1308,19 @@ rtl8366rb_port_bridge_flags(struct dsa_s
return 0;
}
+static void
+rtl8366rb_port_fast_age(struct dsa_switch *ds, int port)
+{
+ struct realtek_smi *smi = ds->priv;
+
+ /* This will age out any learned L2 entries */
+ regmap_update_bits(smi->map, RTL8366RB_SECURITY_CTRL,
+ BIT(port), BIT(port));
+ /* Restore the normal state of things */
+ regmap_update_bits(smi->map, RTL8366RB_SECURITY_CTRL,
+ BIT(port), 0);
+}
+
static int rtl8366rb_change_mtu(struct dsa_switch *ds, int port, int new_mtu)
{
struct realtek_smi *smi = ds->priv;
@@ -1720,6 +1733,7 @@ static const struct dsa_switch_ops rtl83
.port_disable = rtl8366rb_port_disable,
.port_pre_bridge_flags = rtl8366rb_port_pre_bridge_flags,
.port_bridge_flags = rtl8366rb_port_bridge_flags,
+ .port_fast_age = rtl8366rb_port_fast_age,
.port_change_mtu = rtl8366rb_change_mtu,
.port_max_mtu = rtl8366rb_max_mtu,
};

107
target/linux/generic/backport-5.15/774-v5.16-10-net-dsa-rtl8366rb-Support-setting-STP-state.patch Normal file
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@ -0,0 +1,107 @@
From 90c855471a89d3e05ecf5b6464bd04abf2c83b70 Mon Sep 17 00:00:00 2001
From: Linus Walleij <linus.walleij@linaro.org>
Date: Tue, 5 Oct 2021 21:47:04 +0200
Subject: [PATCH 10/11] net: dsa: rtl8366rb: Support setting STP state
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
This adds support for setting the STP state to the RTL8366RB
DSA switch. This rids the following message from the kernel on
e.g. OpenWrt:
DSA: failed to set STP state 3 (-95)
Since the RTL8366RB has one STP state register per FID with
two bit per port in each, we simply loop over all the FIDs
and set the state on all of them.
Cc: Vladimir Oltean <olteanv@gmail.com>
Cc: Alvin Šipraga <alsi@bang-olufsen.dk>
Cc: Mauri Sandberg <sandberg@mailfence.com>
Cc: DENG Qingfang <dqfext@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/dsa/rtl8366rb.c | 48 +++++++++++++++++++++++++++++++++++++
1 file changed, 48 insertions(+)
--- a/drivers/net/dsa/rtl8366rb.c
+++ b/drivers/net/dsa/rtl8366rb.c
@@ -110,6 +110,18 @@
#define RTL8366RB_POWER_SAVING_REG 0x0021
+/* Spanning tree status (STP) control, two bits per port per FID */
+#define RTL8366RB_STP_STATE_BASE 0x0050 /* 0x0050..0x0057 */
+#define RTL8366RB_STP_STATE_DISABLED 0x0
+#define RTL8366RB_STP_STATE_BLOCKING 0x1
+#define RTL8366RB_STP_STATE_LEARNING 0x2
+#define RTL8366RB_STP_STATE_FORWARDING 0x3
+#define RTL8366RB_STP_MASK GENMASK(1, 0)
+#define RTL8366RB_STP_STATE(port, state) \
+ ((state) << ((port) * 2))
+#define RTL8366RB_STP_STATE_MASK(port) \
+ RTL8366RB_STP_STATE((port), RTL8366RB_STP_MASK)
+
/* CPU port control reg */
#define RTL8368RB_CPU_CTRL_REG 0x0061
#define RTL8368RB_CPU_PORTS_MSK 0x00FF
@@ -234,6 +246,7 @@
#define RTL8366RB_NUM_LEDGROUPS 4
#define RTL8366RB_NUM_VIDS 4096
#define RTL8366RB_PRIORITYMAX 7
+#define RTL8366RB_NUM_FIDS 8
#define RTL8366RB_FIDMAX 7
#define RTL8366RB_PORT_1 BIT(0) /* In userspace port 0 */
@@ -1309,6 +1322,40 @@ rtl8366rb_port_bridge_flags(struct dsa_s
}
static void
+rtl8366rb_port_stp_state_set(struct dsa_switch *ds, int port, u8 state)
+{
+ struct realtek_smi *smi = ds->priv;
+ u32 val;
+ int i;
+
+ switch (state) {
+ case BR_STATE_DISABLED:
+ val = RTL8366RB_STP_STATE_DISABLED;
+ break;
+ case BR_STATE_BLOCKING:
+ case BR_STATE_LISTENING:
+ val = RTL8366RB_STP_STATE_BLOCKING;
+ break;
+ case BR_STATE_LEARNING:
+ val = RTL8366RB_STP_STATE_LEARNING;
+ break;
+ case BR_STATE_FORWARDING:
+ val = RTL8366RB_STP_STATE_FORWARDING;
+ break;
+ default:
+ dev_err(smi->dev, "unknown bridge state requested\n");
+ return;
+ };
+
+ /* Set the same status for the port on all the FIDs */
+ for (i = 0; i < RTL8366RB_NUM_FIDS; i++) {
+ regmap_update_bits(smi->map, RTL8366RB_STP_STATE_BASE + i,
+ RTL8366RB_STP_STATE_MASK(port),
+ RTL8366RB_STP_STATE(port, val));
+ }
+}
+
+static void
rtl8366rb_port_fast_age(struct dsa_switch *ds, int port)
{
struct realtek_smi *smi = ds->priv;
@@ -1733,6 +1780,7 @@ static const struct dsa_switch_ops rtl83
.port_disable = rtl8366rb_port_disable,
.port_pre_bridge_flags = rtl8366rb_port_pre_bridge_flags,
.port_bridge_flags = rtl8366rb_port_bridge_flags,
+ .port_stp_state_set = rtl8366rb_port_stp_state_set,
.port_fast_age = rtl8366rb_port_fast_age,
.port_change_mtu = rtl8366rb_change_mtu,
.port_max_mtu = rtl8366rb_max_mtu,