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990 lines
23 KiB
990 lines
23 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* Handling of a single switch port |
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* |
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* Copyright (c) 2017 Savoir-faire Linux Inc. |
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* Vivien Didelot <[email protected]> |
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*/ |
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|
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#include <linux/if_bridge.h> |
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#include <linux/notifier.h> |
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#include <linux/of_mdio.h> |
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#include <linux/of_net.h> |
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#include "dsa_priv.h" |
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|
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/** |
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* dsa_port_notify - Notify the switching fabric of changes to a port |
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* @dp: port on which change occurred |
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* @e: event, must be of type DSA_NOTIFIER_* |
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* @v: event-specific value. |
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* |
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* Notify all switches in the DSA tree that this port's switch belongs to, |
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* including this switch itself, of an event. Allows the other switches to |
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* reconfigure themselves for cross-chip operations. Can also be used to |
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* reconfigure ports without net_devices (CPU ports, DSA links) whenever |
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* a user port's state changes. |
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*/ |
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static int dsa_port_notify(const struct dsa_port *dp, unsigned long e, void *v) |
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{ |
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return dsa_tree_notify(dp->ds->dst, e, v); |
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} |
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int dsa_port_set_state(struct dsa_port *dp, u8 state) |
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{ |
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struct dsa_switch *ds = dp->ds; |
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int port = dp->index; |
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if (!ds->ops->port_stp_state_set) |
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return -EOPNOTSUPP; |
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ds->ops->port_stp_state_set(ds, port, state); |
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if (ds->ops->port_fast_age) { |
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/* Fast age FDB entries or flush appropriate forwarding database |
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* for the given port, if we are moving it from Learning or |
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* Forwarding state, to Disabled or Blocking or Listening state. |
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*/ |
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if ((dp->stp_state == BR_STATE_LEARNING || |
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dp->stp_state == BR_STATE_FORWARDING) && |
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(state == BR_STATE_DISABLED || |
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state == BR_STATE_BLOCKING || |
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state == BR_STATE_LISTENING)) |
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ds->ops->port_fast_age(ds, port); |
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} |
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dp->stp_state = state; |
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return 0; |
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} |
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static void dsa_port_set_state_now(struct dsa_port *dp, u8 state) |
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{ |
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int err; |
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err = dsa_port_set_state(dp, state); |
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if (err) |
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pr_err("DSA: failed to set STP state %u (%d)\n", state, err); |
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} |
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int dsa_port_enable_rt(struct dsa_port *dp, struct phy_device *phy) |
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{ |
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struct dsa_switch *ds = dp->ds; |
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int port = dp->index; |
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int err; |
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if (ds->ops->port_enable) { |
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err = ds->ops->port_enable(ds, port, phy); |
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if (err) |
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return err; |
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} |
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if (!dp->bridge_dev) |
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dsa_port_set_state_now(dp, BR_STATE_FORWARDING); |
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if (dp->pl) |
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phylink_start(dp->pl); |
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return 0; |
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} |
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int dsa_port_enable(struct dsa_port *dp, struct phy_device *phy) |
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{ |
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int err; |
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rtnl_lock(); |
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err = dsa_port_enable_rt(dp, phy); |
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rtnl_unlock(); |
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return err; |
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} |
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void dsa_port_disable_rt(struct dsa_port *dp) |
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{ |
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struct dsa_switch *ds = dp->ds; |
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int port = dp->index; |
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if (dp->pl) |
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phylink_stop(dp->pl); |
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if (!dp->bridge_dev) |
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dsa_port_set_state_now(dp, BR_STATE_DISABLED); |
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if (ds->ops->port_disable) |
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ds->ops->port_disable(ds, port); |
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} |
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void dsa_port_disable(struct dsa_port *dp) |
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{ |
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rtnl_lock(); |
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dsa_port_disable_rt(dp); |
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rtnl_unlock(); |
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} |
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static void dsa_port_change_brport_flags(struct dsa_port *dp, |
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bool bridge_offload) |
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{ |
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struct switchdev_brport_flags flags; |
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int flag; |
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flags.mask = BR_LEARNING | BR_FLOOD | BR_MCAST_FLOOD | BR_BCAST_FLOOD; |
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if (bridge_offload) |
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flags.val = flags.mask; |
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else |
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flags.val = flags.mask & ~BR_LEARNING; |
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for_each_set_bit(flag, &flags.mask, 32) { |
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struct switchdev_brport_flags tmp; |
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tmp.val = flags.val & BIT(flag); |
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tmp.mask = BIT(flag); |
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dsa_port_bridge_flags(dp, tmp, NULL); |
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} |
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} |
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int dsa_port_bridge_join(struct dsa_port *dp, struct net_device *br) |
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{ |
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struct dsa_notifier_bridge_info info = { |
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.tree_index = dp->ds->dst->index, |
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.sw_index = dp->ds->index, |
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.port = dp->index, |
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.br = br, |
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}; |
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int err; |
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/* Notify the port driver to set its configurable flags in a way that |
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* matches the initial settings of a bridge port. |
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*/ |
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dsa_port_change_brport_flags(dp, true); |
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/* Here the interface is already bridged. Reflect the current |
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* configuration so that drivers can program their chips accordingly. |
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*/ |
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dp->bridge_dev = br; |
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err = dsa_broadcast(DSA_NOTIFIER_BRIDGE_JOIN, &info); |
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/* The bridging is rolled back on error */ |
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if (err) { |
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dsa_port_change_brport_flags(dp, false); |
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dp->bridge_dev = NULL; |
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} |
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return err; |
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} |
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void dsa_port_bridge_leave(struct dsa_port *dp, struct net_device *br) |
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{ |
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struct dsa_notifier_bridge_info info = { |
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.tree_index = dp->ds->dst->index, |
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.sw_index = dp->ds->index, |
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.port = dp->index, |
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.br = br, |
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}; |
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int err; |
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/* Here the port is already unbridged. Reflect the current configuration |
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* so that drivers can program their chips accordingly. |
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*/ |
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dp->bridge_dev = NULL; |
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err = dsa_broadcast(DSA_NOTIFIER_BRIDGE_LEAVE, &info); |
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if (err) |
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pr_err("DSA: failed to notify DSA_NOTIFIER_BRIDGE_LEAVE\n"); |
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/* Configure the port for standalone mode (no address learning, |
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* flood everything). |
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* The bridge only emits SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS events |
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* when the user requests it through netlink or sysfs, but not |
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* automatically at port join or leave, so we need to handle resetting |
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* the brport flags ourselves. But we even prefer it that way, because |
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* otherwise, some setups might never get the notification they need, |
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* for example, when a port leaves a LAG that offloads the bridge, |
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* it becomes standalone, but as far as the bridge is concerned, no |
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* port ever left. |
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*/ |
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dsa_port_change_brport_flags(dp, false); |
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/* Port left the bridge, put in BR_STATE_DISABLED by the bridge layer, |
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* so allow it to be in BR_STATE_FORWARDING to be kept functional |
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*/ |
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dsa_port_set_state_now(dp, BR_STATE_FORWARDING); |
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} |
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int dsa_port_lag_change(struct dsa_port *dp, |
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struct netdev_lag_lower_state_info *linfo) |
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{ |
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struct dsa_notifier_lag_info info = { |
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.sw_index = dp->ds->index, |
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.port = dp->index, |
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}; |
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bool tx_enabled; |
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if (!dp->lag_dev) |
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return 0; |
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/* On statically configured aggregates (e.g. loadbalance |
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* without LACP) ports will always be tx_enabled, even if the |
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* link is down. Thus we require both link_up and tx_enabled |
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* in order to include it in the tx set. |
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*/ |
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tx_enabled = linfo->link_up && linfo->tx_enabled; |
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if (tx_enabled == dp->lag_tx_enabled) |
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return 0; |
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dp->lag_tx_enabled = tx_enabled; |
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return dsa_port_notify(dp, DSA_NOTIFIER_LAG_CHANGE, &info); |
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} |
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int dsa_port_lag_join(struct dsa_port *dp, struct net_device *lag, |
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struct netdev_lag_upper_info *uinfo) |
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{ |
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struct dsa_notifier_lag_info info = { |
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.sw_index = dp->ds->index, |
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.port = dp->index, |
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.lag = lag, |
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.info = uinfo, |
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}; |
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int err; |
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dsa_lag_map(dp->ds->dst, lag); |
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dp->lag_dev = lag; |
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err = dsa_port_notify(dp, DSA_NOTIFIER_LAG_JOIN, &info); |
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if (err) { |
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dp->lag_dev = NULL; |
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dsa_lag_unmap(dp->ds->dst, lag); |
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} |
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return err; |
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} |
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void dsa_port_lag_leave(struct dsa_port *dp, struct net_device *lag) |
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{ |
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struct dsa_notifier_lag_info info = { |
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.sw_index = dp->ds->index, |
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.port = dp->index, |
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.lag = lag, |
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}; |
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int err; |
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if (!dp->lag_dev) |
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return; |
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/* Port might have been part of a LAG that in turn was |
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* attached to a bridge. |
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*/ |
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if (dp->bridge_dev) |
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dsa_port_bridge_leave(dp, dp->bridge_dev); |
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dp->lag_tx_enabled = false; |
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dp->lag_dev = NULL; |
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err = dsa_port_notify(dp, DSA_NOTIFIER_LAG_LEAVE, &info); |
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if (err) |
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pr_err("DSA: failed to notify DSA_NOTIFIER_LAG_LEAVE: %d\n", |
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err); |
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dsa_lag_unmap(dp->ds->dst, lag); |
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} |
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/* Must be called under rcu_read_lock() */ |
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static bool dsa_port_can_apply_vlan_filtering(struct dsa_port *dp, |
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bool vlan_filtering, |
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struct netlink_ext_ack *extack) |
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{ |
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struct dsa_switch *ds = dp->ds; |
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int err, i; |
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/* VLAN awareness was off, so the question is "can we turn it on". |
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* We may have had 8021q uppers, those need to go. Make sure we don't |
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* enter an inconsistent state: deny changing the VLAN awareness state |
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* as long as we have 8021q uppers. |
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*/ |
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if (vlan_filtering && dsa_is_user_port(ds, dp->index)) { |
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struct net_device *upper_dev, *slave = dp->slave; |
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struct net_device *br = dp->bridge_dev; |
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struct list_head *iter; |
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netdev_for_each_upper_dev_rcu(slave, upper_dev, iter) { |
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struct bridge_vlan_info br_info; |
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u16 vid; |
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if (!is_vlan_dev(upper_dev)) |
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continue; |
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vid = vlan_dev_vlan_id(upper_dev); |
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/* br_vlan_get_info() returns -EINVAL or -ENOENT if the |
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* device, respectively the VID is not found, returning |
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* 0 means success, which is a failure for us here. |
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*/ |
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err = br_vlan_get_info(br, vid, &br_info); |
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if (err == 0) { |
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NL_SET_ERR_MSG_MOD(extack, |
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"Must first remove VLAN uppers having VIDs also present in bridge"); |
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return false; |
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} |
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} |
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} |
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if (!ds->vlan_filtering_is_global) |
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return true; |
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/* For cases where enabling/disabling VLAN awareness is global to the |
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* switch, we need to handle the case where multiple bridges span |
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* different ports of the same switch device and one of them has a |
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* different setting than what is being requested. |
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*/ |
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for (i = 0; i < ds->num_ports; i++) { |
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struct net_device *other_bridge; |
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other_bridge = dsa_to_port(ds, i)->bridge_dev; |
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if (!other_bridge) |
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continue; |
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/* If it's the same bridge, it also has same |
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* vlan_filtering setting => no need to check |
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*/ |
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if (other_bridge == dp->bridge_dev) |
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continue; |
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if (br_vlan_enabled(other_bridge) != vlan_filtering) { |
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NL_SET_ERR_MSG_MOD(extack, |
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"VLAN filtering is a global setting"); |
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return false; |
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} |
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} |
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return true; |
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} |
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int dsa_port_vlan_filtering(struct dsa_port *dp, bool vlan_filtering, |
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struct netlink_ext_ack *extack) |
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{ |
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struct dsa_switch *ds = dp->ds; |
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bool apply; |
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int err; |
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if (!ds->ops->port_vlan_filtering) |
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return -EOPNOTSUPP; |
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/* We are called from dsa_slave_switchdev_blocking_event(), |
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* which is not under rcu_read_lock(), unlike |
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* dsa_slave_switchdev_event(). |
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*/ |
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rcu_read_lock(); |
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apply = dsa_port_can_apply_vlan_filtering(dp, vlan_filtering, extack); |
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rcu_read_unlock(); |
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if (!apply) |
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return -EINVAL; |
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if (dsa_port_is_vlan_filtering(dp) == vlan_filtering) |
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return 0; |
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err = ds->ops->port_vlan_filtering(ds, dp->index, vlan_filtering, |
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extack); |
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if (err) |
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return err; |
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if (ds->vlan_filtering_is_global) |
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ds->vlan_filtering = vlan_filtering; |
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else |
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dp->vlan_filtering = vlan_filtering; |
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return 0; |
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} |
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/* This enforces legacy behavior for switch drivers which assume they can't |
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* receive VLAN configuration when enslaved to a bridge with vlan_filtering=0 |
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*/ |
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bool dsa_port_skip_vlan_configuration(struct dsa_port *dp) |
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{ |
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struct dsa_switch *ds = dp->ds; |
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if (!dp->bridge_dev) |
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return false; |
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return (!ds->configure_vlan_while_not_filtering && |
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!br_vlan_enabled(dp->bridge_dev)); |
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} |
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int dsa_port_ageing_time(struct dsa_port *dp, clock_t ageing_clock) |
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{ |
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unsigned long ageing_jiffies = clock_t_to_jiffies(ageing_clock); |
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unsigned int ageing_time = jiffies_to_msecs(ageing_jiffies); |
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struct dsa_notifier_ageing_time_info info; |
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int err; |
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info.ageing_time = ageing_time; |
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err = dsa_port_notify(dp, DSA_NOTIFIER_AGEING_TIME, &info); |
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if (err) |
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return err; |
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dp->ageing_time = ageing_time; |
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return 0; |
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} |
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int dsa_port_pre_bridge_flags(const struct dsa_port *dp, |
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struct switchdev_brport_flags flags, |
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struct netlink_ext_ack *extack) |
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{ |
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struct dsa_switch *ds = dp->ds; |
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if (!ds->ops->port_pre_bridge_flags) |
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return -EINVAL; |
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return ds->ops->port_pre_bridge_flags(ds, dp->index, flags, extack); |
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} |
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int dsa_port_bridge_flags(const struct dsa_port *dp, |
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struct switchdev_brport_flags flags, |
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struct netlink_ext_ack *extack) |
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{ |
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struct dsa_switch *ds = dp->ds; |
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if (!ds->ops->port_bridge_flags) |
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return -EINVAL; |
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return ds->ops->port_bridge_flags(ds, dp->index, flags, extack); |
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} |
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int dsa_port_mrouter(struct dsa_port *dp, bool mrouter, |
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struct netlink_ext_ack *extack) |
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{ |
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struct dsa_switch *ds = dp->ds; |
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if (!ds->ops->port_set_mrouter) |
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return -EOPNOTSUPP; |
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return ds->ops->port_set_mrouter(ds, dp->index, mrouter, extack); |
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} |
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int dsa_port_mtu_change(struct dsa_port *dp, int new_mtu, |
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bool propagate_upstream) |
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{ |
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struct dsa_notifier_mtu_info info = { |
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.sw_index = dp->ds->index, |
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.propagate_upstream = propagate_upstream, |
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.port = dp->index, |
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.mtu = new_mtu, |
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}; |
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return dsa_port_notify(dp, DSA_NOTIFIER_MTU, &info); |
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} |
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int dsa_port_fdb_add(struct dsa_port *dp, const unsigned char *addr, |
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u16 vid) |
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{ |
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struct dsa_notifier_fdb_info info = { |
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.sw_index = dp->ds->index, |
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.port = dp->index, |
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.addr = addr, |
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.vid = vid, |
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}; |
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return dsa_port_notify(dp, DSA_NOTIFIER_FDB_ADD, &info); |
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} |
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int dsa_port_fdb_del(struct dsa_port *dp, const unsigned char *addr, |
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u16 vid) |
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{ |
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struct dsa_notifier_fdb_info info = { |
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.sw_index = dp->ds->index, |
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.port = dp->index, |
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.addr = addr, |
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.vid = vid, |
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}; |
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return dsa_port_notify(dp, DSA_NOTIFIER_FDB_DEL, &info); |
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} |
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int dsa_port_fdb_dump(struct dsa_port *dp, dsa_fdb_dump_cb_t *cb, void *data) |
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{ |
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struct dsa_switch *ds = dp->ds; |
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int port = dp->index; |
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if (!ds->ops->port_fdb_dump) |
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return -EOPNOTSUPP; |
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return ds->ops->port_fdb_dump(ds, port, cb, data); |
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} |
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int dsa_port_mdb_add(const struct dsa_port *dp, |
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const struct switchdev_obj_port_mdb *mdb) |
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{ |
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struct dsa_notifier_mdb_info info = { |
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.sw_index = dp->ds->index, |
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.port = dp->index, |
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.mdb = mdb, |
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}; |
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return dsa_port_notify(dp, DSA_NOTIFIER_MDB_ADD, &info); |
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} |
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int dsa_port_mdb_del(const struct dsa_port *dp, |
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const struct switchdev_obj_port_mdb *mdb) |
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{ |
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struct dsa_notifier_mdb_info info = { |
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.sw_index = dp->ds->index, |
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.port = dp->index, |
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.mdb = mdb, |
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}; |
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return dsa_port_notify(dp, DSA_NOTIFIER_MDB_DEL, &info); |
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} |
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int dsa_port_vlan_add(struct dsa_port *dp, |
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const struct switchdev_obj_port_vlan *vlan, |
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struct netlink_ext_ack *extack) |
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{ |
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struct dsa_notifier_vlan_info info = { |
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.sw_index = dp->ds->index, |
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.port = dp->index, |
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.vlan = vlan, |
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.extack = extack, |
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}; |
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return dsa_port_notify(dp, DSA_NOTIFIER_VLAN_ADD, &info); |
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} |
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int dsa_port_vlan_del(struct dsa_port *dp, |
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const struct switchdev_obj_port_vlan *vlan) |
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{ |
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struct dsa_notifier_vlan_info info = { |
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.sw_index = dp->ds->index, |
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.port = dp->index, |
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.vlan = vlan, |
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}; |
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return dsa_port_notify(dp, DSA_NOTIFIER_VLAN_DEL, &info); |
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} |
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int dsa_port_mrp_add(const struct dsa_port *dp, |
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const struct switchdev_obj_mrp *mrp) |
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{ |
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struct dsa_notifier_mrp_info info = { |
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.sw_index = dp->ds->index, |
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.port = dp->index, |
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.mrp = mrp, |
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}; |
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return dsa_port_notify(dp, DSA_NOTIFIER_MRP_ADD, &info); |
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} |
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|
|
int dsa_port_mrp_del(const struct dsa_port *dp, |
|
const struct switchdev_obj_mrp *mrp) |
|
{ |
|
struct dsa_notifier_mrp_info info = { |
|
.sw_index = dp->ds->index, |
|
.port = dp->index, |
|
.mrp = mrp, |
|
}; |
|
|
|
return dsa_port_notify(dp, DSA_NOTIFIER_MRP_DEL, &info); |
|
} |
|
|
|
int dsa_port_mrp_add_ring_role(const struct dsa_port *dp, |
|
const struct switchdev_obj_ring_role_mrp *mrp) |
|
{ |
|
struct dsa_notifier_mrp_ring_role_info info = { |
|
.sw_index = dp->ds->index, |
|
.port = dp->index, |
|
.mrp = mrp, |
|
}; |
|
|
|
return dsa_port_notify(dp, DSA_NOTIFIER_MRP_ADD_RING_ROLE, &info); |
|
} |
|
|
|
int dsa_port_mrp_del_ring_role(const struct dsa_port *dp, |
|
const struct switchdev_obj_ring_role_mrp *mrp) |
|
{ |
|
struct dsa_notifier_mrp_ring_role_info info = { |
|
.sw_index = dp->ds->index, |
|
.port = dp->index, |
|
.mrp = mrp, |
|
}; |
|
|
|
return dsa_port_notify(dp, DSA_NOTIFIER_MRP_DEL_RING_ROLE, &info); |
|
} |
|
|
|
void dsa_port_set_tag_protocol(struct dsa_port *cpu_dp, |
|
const struct dsa_device_ops *tag_ops) |
|
{ |
|
cpu_dp->filter = tag_ops->filter; |
|
cpu_dp->rcv = tag_ops->rcv; |
|
cpu_dp->tag_ops = tag_ops; |
|
} |
|
|
|
static struct phy_device *dsa_port_get_phy_device(struct dsa_port *dp) |
|
{ |
|
struct device_node *phy_dn; |
|
struct phy_device *phydev; |
|
|
|
phy_dn = of_parse_phandle(dp->dn, "phy-handle", 0); |
|
if (!phy_dn) |
|
return NULL; |
|
|
|
phydev = of_phy_find_device(phy_dn); |
|
if (!phydev) { |
|
of_node_put(phy_dn); |
|
return ERR_PTR(-EPROBE_DEFER); |
|
} |
|
|
|
of_node_put(phy_dn); |
|
return phydev; |
|
} |
|
|
|
static void dsa_port_phylink_validate(struct phylink_config *config, |
|
unsigned long *supported, |
|
struct phylink_link_state *state) |
|
{ |
|
struct dsa_port *dp = container_of(config, struct dsa_port, pl_config); |
|
struct dsa_switch *ds = dp->ds; |
|
|
|
if (!ds->ops->phylink_validate) |
|
return; |
|
|
|
ds->ops->phylink_validate(ds, dp->index, supported, state); |
|
} |
|
|
|
static void dsa_port_phylink_mac_pcs_get_state(struct phylink_config *config, |
|
struct phylink_link_state *state) |
|
{ |
|
struct dsa_port *dp = container_of(config, struct dsa_port, pl_config); |
|
struct dsa_switch *ds = dp->ds; |
|
int err; |
|
|
|
/* Only called for inband modes */ |
|
if (!ds->ops->phylink_mac_link_state) { |
|
state->link = 0; |
|
return; |
|
} |
|
|
|
err = ds->ops->phylink_mac_link_state(ds, dp->index, state); |
|
if (err < 0) { |
|
dev_err(ds->dev, "p%d: phylink_mac_link_state() failed: %d\n", |
|
dp->index, err); |
|
state->link = 0; |
|
} |
|
} |
|
|
|
static void dsa_port_phylink_mac_config(struct phylink_config *config, |
|
unsigned int mode, |
|
const struct phylink_link_state *state) |
|
{ |
|
struct dsa_port *dp = container_of(config, struct dsa_port, pl_config); |
|
struct dsa_switch *ds = dp->ds; |
|
|
|
if (!ds->ops->phylink_mac_config) |
|
return; |
|
|
|
ds->ops->phylink_mac_config(ds, dp->index, mode, state); |
|
} |
|
|
|
static void dsa_port_phylink_mac_an_restart(struct phylink_config *config) |
|
{ |
|
struct dsa_port *dp = container_of(config, struct dsa_port, pl_config); |
|
struct dsa_switch *ds = dp->ds; |
|
|
|
if (!ds->ops->phylink_mac_an_restart) |
|
return; |
|
|
|
ds->ops->phylink_mac_an_restart(ds, dp->index); |
|
} |
|
|
|
static void dsa_port_phylink_mac_link_down(struct phylink_config *config, |
|
unsigned int mode, |
|
phy_interface_t interface) |
|
{ |
|
struct dsa_port *dp = container_of(config, struct dsa_port, pl_config); |
|
struct phy_device *phydev = NULL; |
|
struct dsa_switch *ds = dp->ds; |
|
|
|
if (dsa_is_user_port(ds, dp->index)) |
|
phydev = dp->slave->phydev; |
|
|
|
if (!ds->ops->phylink_mac_link_down) { |
|
if (ds->ops->adjust_link && phydev) |
|
ds->ops->adjust_link(ds, dp->index, phydev); |
|
return; |
|
} |
|
|
|
ds->ops->phylink_mac_link_down(ds, dp->index, mode, interface); |
|
} |
|
|
|
static void dsa_port_phylink_mac_link_up(struct phylink_config *config, |
|
struct phy_device *phydev, |
|
unsigned int mode, |
|
phy_interface_t interface, |
|
int speed, int duplex, |
|
bool tx_pause, bool rx_pause) |
|
{ |
|
struct dsa_port *dp = container_of(config, struct dsa_port, pl_config); |
|
struct dsa_switch *ds = dp->ds; |
|
|
|
if (!ds->ops->phylink_mac_link_up) { |
|
if (ds->ops->adjust_link && phydev) |
|
ds->ops->adjust_link(ds, dp->index, phydev); |
|
return; |
|
} |
|
|
|
ds->ops->phylink_mac_link_up(ds, dp->index, mode, interface, phydev, |
|
speed, duplex, tx_pause, rx_pause); |
|
} |
|
|
|
const struct phylink_mac_ops dsa_port_phylink_mac_ops = { |
|
.validate = dsa_port_phylink_validate, |
|
.mac_pcs_get_state = dsa_port_phylink_mac_pcs_get_state, |
|
.mac_config = dsa_port_phylink_mac_config, |
|
.mac_an_restart = dsa_port_phylink_mac_an_restart, |
|
.mac_link_down = dsa_port_phylink_mac_link_down, |
|
.mac_link_up = dsa_port_phylink_mac_link_up, |
|
}; |
|
|
|
static int dsa_port_setup_phy_of(struct dsa_port *dp, bool enable) |
|
{ |
|
struct dsa_switch *ds = dp->ds; |
|
struct phy_device *phydev; |
|
int port = dp->index; |
|
int err = 0; |
|
|
|
phydev = dsa_port_get_phy_device(dp); |
|
if (!phydev) |
|
return 0; |
|
|
|
if (IS_ERR(phydev)) |
|
return PTR_ERR(phydev); |
|
|
|
if (enable) { |
|
err = genphy_resume(phydev); |
|
if (err < 0) |
|
goto err_put_dev; |
|
|
|
err = genphy_read_status(phydev); |
|
if (err < 0) |
|
goto err_put_dev; |
|
} else { |
|
err = genphy_suspend(phydev); |
|
if (err < 0) |
|
goto err_put_dev; |
|
} |
|
|
|
if (ds->ops->adjust_link) |
|
ds->ops->adjust_link(ds, port, phydev); |
|
|
|
dev_dbg(ds->dev, "enabled port's phy: %s", phydev_name(phydev)); |
|
|
|
err_put_dev: |
|
put_device(&phydev->mdio.dev); |
|
return err; |
|
} |
|
|
|
static int dsa_port_fixed_link_register_of(struct dsa_port *dp) |
|
{ |
|
struct device_node *dn = dp->dn; |
|
struct dsa_switch *ds = dp->ds; |
|
struct phy_device *phydev; |
|
int port = dp->index; |
|
phy_interface_t mode; |
|
int err; |
|
|
|
err = of_phy_register_fixed_link(dn); |
|
if (err) { |
|
dev_err(ds->dev, |
|
"failed to register the fixed PHY of port %d\n", |
|
port); |
|
return err; |
|
} |
|
|
|
phydev = of_phy_find_device(dn); |
|
|
|
err = of_get_phy_mode(dn, &mode); |
|
if (err) |
|
mode = PHY_INTERFACE_MODE_NA; |
|
phydev->interface = mode; |
|
|
|
genphy_read_status(phydev); |
|
|
|
if (ds->ops->adjust_link) |
|
ds->ops->adjust_link(ds, port, phydev); |
|
|
|
put_device(&phydev->mdio.dev); |
|
|
|
return 0; |
|
} |
|
|
|
static int dsa_port_phylink_register(struct dsa_port *dp) |
|
{ |
|
struct dsa_switch *ds = dp->ds; |
|
struct device_node *port_dn = dp->dn; |
|
phy_interface_t mode; |
|
int err; |
|
|
|
err = of_get_phy_mode(port_dn, &mode); |
|
if (err) |
|
mode = PHY_INTERFACE_MODE_NA; |
|
|
|
dp->pl_config.dev = ds->dev; |
|
dp->pl_config.type = PHYLINK_DEV; |
|
dp->pl_config.pcs_poll = ds->pcs_poll; |
|
|
|
dp->pl = phylink_create(&dp->pl_config, of_fwnode_handle(port_dn), |
|
mode, &dsa_port_phylink_mac_ops); |
|
if (IS_ERR(dp->pl)) { |
|
pr_err("error creating PHYLINK: %ld\n", PTR_ERR(dp->pl)); |
|
return PTR_ERR(dp->pl); |
|
} |
|
|
|
err = phylink_of_phy_connect(dp->pl, port_dn, 0); |
|
if (err && err != -ENODEV) { |
|
pr_err("could not attach to PHY: %d\n", err); |
|
goto err_phy_connect; |
|
} |
|
|
|
return 0; |
|
|
|
err_phy_connect: |
|
phylink_destroy(dp->pl); |
|
return err; |
|
} |
|
|
|
int dsa_port_link_register_of(struct dsa_port *dp) |
|
{ |
|
struct dsa_switch *ds = dp->ds; |
|
struct device_node *phy_np; |
|
int port = dp->index; |
|
|
|
if (!ds->ops->adjust_link) { |
|
phy_np = of_parse_phandle(dp->dn, "phy-handle", 0); |
|
if (of_phy_is_fixed_link(dp->dn) || phy_np) { |
|
if (ds->ops->phylink_mac_link_down) |
|
ds->ops->phylink_mac_link_down(ds, port, |
|
MLO_AN_FIXED, PHY_INTERFACE_MODE_NA); |
|
return dsa_port_phylink_register(dp); |
|
} |
|
return 0; |
|
} |
|
|
|
dev_warn(ds->dev, |
|
"Using legacy PHYLIB callbacks. Please migrate to PHYLINK!\n"); |
|
|
|
if (of_phy_is_fixed_link(dp->dn)) |
|
return dsa_port_fixed_link_register_of(dp); |
|
else |
|
return dsa_port_setup_phy_of(dp, true); |
|
} |
|
|
|
void dsa_port_link_unregister_of(struct dsa_port *dp) |
|
{ |
|
struct dsa_switch *ds = dp->ds; |
|
|
|
if (!ds->ops->adjust_link && dp->pl) { |
|
rtnl_lock(); |
|
phylink_disconnect_phy(dp->pl); |
|
rtnl_unlock(); |
|
phylink_destroy(dp->pl); |
|
dp->pl = NULL; |
|
return; |
|
} |
|
|
|
if (of_phy_is_fixed_link(dp->dn)) |
|
of_phy_deregister_fixed_link(dp->dn); |
|
else |
|
dsa_port_setup_phy_of(dp, false); |
|
} |
|
|
|
int dsa_port_get_phy_strings(struct dsa_port *dp, uint8_t *data) |
|
{ |
|
struct phy_device *phydev; |
|
int ret = -EOPNOTSUPP; |
|
|
|
if (of_phy_is_fixed_link(dp->dn)) |
|
return ret; |
|
|
|
phydev = dsa_port_get_phy_device(dp); |
|
if (IS_ERR_OR_NULL(phydev)) |
|
return ret; |
|
|
|
ret = phy_ethtool_get_strings(phydev, data); |
|
put_device(&phydev->mdio.dev); |
|
|
|
return ret; |
|
} |
|
EXPORT_SYMBOL_GPL(dsa_port_get_phy_strings); |
|
|
|
int dsa_port_get_ethtool_phy_stats(struct dsa_port *dp, uint64_t *data) |
|
{ |
|
struct phy_device *phydev; |
|
int ret = -EOPNOTSUPP; |
|
|
|
if (of_phy_is_fixed_link(dp->dn)) |
|
return ret; |
|
|
|
phydev = dsa_port_get_phy_device(dp); |
|
if (IS_ERR_OR_NULL(phydev)) |
|
return ret; |
|
|
|
ret = phy_ethtool_get_stats(phydev, NULL, data); |
|
put_device(&phydev->mdio.dev); |
|
|
|
return ret; |
|
} |
|
EXPORT_SYMBOL_GPL(dsa_port_get_ethtool_phy_stats); |
|
|
|
int dsa_port_get_phy_sset_count(struct dsa_port *dp) |
|
{ |
|
struct phy_device *phydev; |
|
int ret = -EOPNOTSUPP; |
|
|
|
if (of_phy_is_fixed_link(dp->dn)) |
|
return ret; |
|
|
|
phydev = dsa_port_get_phy_device(dp); |
|
if (IS_ERR_OR_NULL(phydev)) |
|
return ret; |
|
|
|
ret = phy_ethtool_get_sset_count(phydev); |
|
put_device(&phydev->mdio.dev); |
|
|
|
return ret; |
|
} |
|
EXPORT_SYMBOL_GPL(dsa_port_get_phy_sset_count); |
|
|
|
int dsa_port_hsr_join(struct dsa_port *dp, struct net_device *hsr) |
|
{ |
|
struct dsa_notifier_hsr_info info = { |
|
.sw_index = dp->ds->index, |
|
.port = dp->index, |
|
.hsr = hsr, |
|
}; |
|
int err; |
|
|
|
dp->hsr_dev = hsr; |
|
|
|
err = dsa_port_notify(dp, DSA_NOTIFIER_HSR_JOIN, &info); |
|
if (err) |
|
dp->hsr_dev = NULL; |
|
|
|
return err; |
|
} |
|
|
|
void dsa_port_hsr_leave(struct dsa_port *dp, struct net_device *hsr) |
|
{ |
|
struct dsa_notifier_hsr_info info = { |
|
.sw_index = dp->ds->index, |
|
.port = dp->index, |
|
.hsr = hsr, |
|
}; |
|
int err; |
|
|
|
dp->hsr_dev = NULL; |
|
|
|
err = dsa_port_notify(dp, DSA_NOTIFIER_HSR_LEAVE, &info); |
|
if (err) |
|
pr_err("DSA: failed to notify DSA_NOTIFIER_HSR_LEAVE\n"); |
|
}
|
|
|