From c4e6a147a6c02e5bb744aa59635e4d5761fe13a2 Mon Sep 17 00:00:00 2001 From: Daniel Golle Date: Wed, 19 Jun 2024 13:33:23 +0100 Subject: [PATCH] generic: 6.6: mt7530: add support for bridge port isolation Import patches accepted upstream introducing port isolation feature on MT7530 switches: - [net-next,v3,1/2] net: dsa: mt7530: factor out bridge join/leave logic https://git.kernel.org/netdev/net-next/c/c25c961fc7f3 - [net-next,v3,2/2] net: dsa: mt7530: add support for bridge port isolation https://git.kernel.org/netdev/net-next/c/3d49ee2127c2 Signed-off-by: Daniel Golle --- ...0-factor-out-bridge-join-leave-logic.patch | 176 ++++++++++++++++++ ...dd-support-for-bridge-port-isolation.patch | 79 ++++++++ 2 files changed, 255 insertions(+) create mode 100644 target/linux/generic/backport-6.6/790-55-v6.11-net-dsa-mt7530-factor-out-bridge-join-leave-logic.patch create mode 100644 target/linux/generic/backport-6.6/790-56-v6.11-net-dsa-mt7530-add-support-for-bridge-port-isolation.patch diff --git a/target/linux/generic/backport-6.6/790-55-v6.11-net-dsa-mt7530-factor-out-bridge-join-leave-logic.patch b/target/linux/generic/backport-6.6/790-55-v6.11-net-dsa-mt7530-factor-out-bridge-join-leave-logic.patch new file mode 100644 index 00000000000000..fdba021c177c4f --- /dev/null +++ b/target/linux/generic/backport-6.6/790-55-v6.11-net-dsa-mt7530-factor-out-bridge-join-leave-logic.patch @@ -0,0 +1,176 @@ +From c25c961fc7f36682f0a530150f1b7453ebc344cd Mon Sep 17 00:00:00 2001 +From: Matthias Schiffer +Date: Tue, 18 Jun 2024 09:17:12 +0200 +Subject: [PATCH 1/2] net: dsa: mt7530: factor out bridge join/leave logic +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +As preparation for implementing bridge port isolation, move the logic to +add and remove bits in the port matrix into a new helper +mt7530_update_port_member(), which is called from +mt7530_port_bridge_join() and mt7530_port_bridge_leave(). + +Another part of the preparation is using dsa_port_offloads_bridge_dev() +instead of dsa_port_offloads_bridge() to check for bridge membership, as +we don't have a struct dsa_bridge in mt7530_port_bridge_flags(). + +The port matrix setting is slightly streamlined, now always first setting +the mt7530_port's pm field and then writing the port matrix from that +field into the hardware register, instead of duplicating the bit +manipulation for both the struct field and the register. + +mt7530_port_bridge_join() was previously using |= to update the port +matrix with the port bitmap, which was unnecessary, as pm would only +have the CPU port set before joining a bridge; a simple assignment can +be used for both joining and leaving (and will also work when individual +bits are added/removed in port_bitmap with regard to the previous port +matrix, which is what happens with port isolation). + +No functional change intended. + +Signed-off-by: Matthias Schiffer +Reviewed-by: Wojciech Drewek +Reviewed-by: Arınç ÜNAL +Tested-by: Arınç ÜNAL +Signed-off-by: David S. Miller +--- + drivers/net/dsa/mt7530.c | 105 ++++++++++++++++++--------------------- + 1 file changed, 48 insertions(+), 57 deletions(-) + +--- a/drivers/net/dsa/mt7530.c ++++ b/drivers/net/dsa/mt7530.c +@@ -1302,6 +1302,52 @@ mt7530_stp_state_set(struct dsa_switch * + FID_PST(FID_BRIDGED, stp_state)); + } + ++static void mt7530_update_port_member(struct mt7530_priv *priv, int port, ++ const struct net_device *bridge_dev, ++ bool join) __must_hold(&priv->reg_mutex) ++{ ++ struct dsa_port *dp = dsa_to_port(priv->ds, port), *other_dp; ++ struct mt7530_port *p = &priv->ports[port], *other_p; ++ struct dsa_port *cpu_dp = dp->cpu_dp; ++ u32 port_bitmap = BIT(cpu_dp->index); ++ int other_port; ++ ++ dsa_switch_for_each_user_port(other_dp, priv->ds) { ++ other_port = other_dp->index; ++ other_p = &priv->ports[other_port]; ++ ++ if (dp == other_dp) ++ continue; ++ ++ /* Add/remove this port to/from the port matrix of the other ++ * ports in the same bridge. If the port is disabled, port ++ * matrix is kept and not being setup until the port becomes ++ * enabled. ++ */ ++ if (!dsa_port_offloads_bridge_dev(other_dp, bridge_dev)) ++ continue; ++ ++ if (join) { ++ other_p->pm |= PCR_MATRIX(BIT(port)); ++ port_bitmap |= BIT(other_port); ++ } else { ++ other_p->pm &= ~PCR_MATRIX(BIT(port)); ++ } ++ ++ if (other_p->enable) ++ mt7530_rmw(priv, MT7530_PCR_P(other_port), ++ PCR_MATRIX_MASK, other_p->pm); ++ } ++ ++ /* Add/remove the all other ports to this port matrix. For !join ++ * (leaving the bridge), only the CPU port will remain in the port matrix ++ * of this port. ++ */ ++ p->pm = PCR_MATRIX(port_bitmap); ++ if (priv->ports[port].enable) ++ mt7530_rmw(priv, MT7530_PCR_P(port), PCR_MATRIX_MASK, p->pm); ++} ++ + static int + mt7530_port_pre_bridge_flags(struct dsa_switch *ds, int port, + struct switchdev_brport_flags flags, +@@ -1345,39 +1391,11 @@ mt7530_port_bridge_join(struct dsa_switc + struct dsa_bridge bridge, bool *tx_fwd_offload, + struct netlink_ext_ack *extack) + { +- struct dsa_port *dp = dsa_to_port(ds, port), *other_dp; +- struct dsa_port *cpu_dp = dp->cpu_dp; +- u32 port_bitmap = BIT(cpu_dp->index); + struct mt7530_priv *priv = ds->priv; + + mutex_lock(&priv->reg_mutex); + +- dsa_switch_for_each_user_port(other_dp, ds) { +- int other_port = other_dp->index; +- +- if (dp == other_dp) +- continue; +- +- /* Add this port to the port matrix of the other ports in the +- * same bridge. If the port is disabled, port matrix is kept +- * and not being setup until the port becomes enabled. +- */ +- if (!dsa_port_offloads_bridge(other_dp, &bridge)) +- continue; +- +- if (priv->ports[other_port].enable) +- mt7530_set(priv, MT7530_PCR_P(other_port), +- PCR_MATRIX(BIT(port))); +- priv->ports[other_port].pm |= PCR_MATRIX(BIT(port)); +- +- port_bitmap |= BIT(other_port); +- } +- +- /* Add the all other ports to this port matrix. */ +- if (priv->ports[port].enable) +- mt7530_rmw(priv, MT7530_PCR_P(port), +- PCR_MATRIX_MASK, PCR_MATRIX(port_bitmap)); +- priv->ports[port].pm |= PCR_MATRIX(port_bitmap); ++ mt7530_update_port_member(priv, port, bridge.dev, true); + + /* Set to fallback mode for independent VLAN learning */ + mt7530_rmw(priv, MT7530_PCR_P(port), PCR_PORT_VLAN_MASK, +@@ -1478,38 +1496,11 @@ static void + mt7530_port_bridge_leave(struct dsa_switch *ds, int port, + struct dsa_bridge bridge) + { +- struct dsa_port *dp = dsa_to_port(ds, port), *other_dp; +- struct dsa_port *cpu_dp = dp->cpu_dp; + struct mt7530_priv *priv = ds->priv; + + mutex_lock(&priv->reg_mutex); + +- dsa_switch_for_each_user_port(other_dp, ds) { +- int other_port = other_dp->index; +- +- if (dp == other_dp) +- continue; +- +- /* Remove this port from the port matrix of the other ports +- * in the same bridge. If the port is disabled, port matrix +- * is kept and not being setup until the port becomes enabled. +- */ +- if (!dsa_port_offloads_bridge(other_dp, &bridge)) +- continue; +- +- if (priv->ports[other_port].enable) +- mt7530_clear(priv, MT7530_PCR_P(other_port), +- PCR_MATRIX(BIT(port))); +- priv->ports[other_port].pm &= ~PCR_MATRIX(BIT(port)); +- } +- +- /* Set the cpu port to be the only one in the port matrix of +- * this port. +- */ +- if (priv->ports[port].enable) +- mt7530_rmw(priv, MT7530_PCR_P(port), PCR_MATRIX_MASK, +- PCR_MATRIX(BIT(cpu_dp->index))); +- priv->ports[port].pm = PCR_MATRIX(BIT(cpu_dp->index)); ++ mt7530_update_port_member(priv, port, bridge.dev, false); + + /* When a port is removed from the bridge, the port would be set up + * back to the default as is at initial boot which is a VLAN-unaware diff --git a/target/linux/generic/backport-6.6/790-56-v6.11-net-dsa-mt7530-add-support-for-bridge-port-isolation.patch b/target/linux/generic/backport-6.6/790-56-v6.11-net-dsa-mt7530-add-support-for-bridge-port-isolation.patch new file mode 100644 index 00000000000000..2eb7859052ded2 --- /dev/null +++ b/target/linux/generic/backport-6.6/790-56-v6.11-net-dsa-mt7530-add-support-for-bridge-port-isolation.patch @@ -0,0 +1,79 @@ +From 3d49ee2127c26fd2c77944fd2e3168c057f99439 Mon Sep 17 00:00:00 2001 +From: Matthias Schiffer +Date: Tue, 18 Jun 2024 09:17:13 +0200 +Subject: [PATCH 2/2] net: dsa: mt7530: add support for bridge port isolation +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +Remove a pair of ports from the port matrix when both ports have the +isolated flag set. + +Signed-off-by: Matthias Schiffer +Reviewed-by: Wojciech Drewek +Reviewed-by: Arınç ÜNAL +Tested-by: Arınç ÜNAL +Signed-off-by: David S. Miller +--- + drivers/net/dsa/mt7530.c | 18 ++++++++++++++++-- + drivers/net/dsa/mt7530.h | 1 + + 2 files changed, 17 insertions(+), 2 deletions(-) + +--- a/drivers/net/dsa/mt7530.c ++++ b/drivers/net/dsa/mt7530.c +@@ -1311,6 +1311,7 @@ static void mt7530_update_port_member(st + struct dsa_port *cpu_dp = dp->cpu_dp; + u32 port_bitmap = BIT(cpu_dp->index); + int other_port; ++ bool isolated; + + dsa_switch_for_each_user_port(other_dp, priv->ds) { + other_port = other_dp->index; +@@ -1327,7 +1328,9 @@ static void mt7530_update_port_member(st + if (!dsa_port_offloads_bridge_dev(other_dp, bridge_dev)) + continue; + +- if (join) { ++ isolated = p->isolated && other_p->isolated; ++ ++ if (join && !isolated) { + other_p->pm |= PCR_MATRIX(BIT(port)); + port_bitmap |= BIT(other_port); + } else { +@@ -1354,7 +1357,7 @@ mt7530_port_pre_bridge_flags(struct dsa_ + struct netlink_ext_ack *extack) + { + if (flags.mask & ~(BR_LEARNING | BR_FLOOD | BR_MCAST_FLOOD | +- BR_BCAST_FLOOD)) ++ BR_BCAST_FLOOD | BR_ISOLATED)) + return -EINVAL; + + return 0; +@@ -1383,6 +1386,17 @@ mt7530_port_bridge_flags(struct dsa_swit + mt7530_rmw(priv, MT753X_MFC, BC_FFP(BIT(port)), + flags.val & BR_BCAST_FLOOD ? BC_FFP(BIT(port)) : 0); + ++ if (flags.mask & BR_ISOLATED) { ++ struct dsa_port *dp = dsa_to_port(ds, port); ++ struct net_device *bridge_dev = dsa_port_bridge_dev_get(dp); ++ ++ priv->ports[port].isolated = !!(flags.val & BR_ISOLATED); ++ ++ mutex_lock(&priv->reg_mutex); ++ mt7530_update_port_member(priv, port, bridge_dev, true); ++ mutex_unlock(&priv->reg_mutex); ++ } ++ + return 0; + } + +--- a/drivers/net/dsa/mt7530.h ++++ b/drivers/net/dsa/mt7530.h +@@ -721,6 +721,7 @@ struct mt7530_fdb { + */ + struct mt7530_port { + bool enable; ++ bool isolated; + u32 pm; + u16 pvid; + struct phylink_pcs *sgmii_pcs;