mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-05 23:46:42 +07:00
6debb68a2d
Rework the netdev event handler, similar to what the Mellanox Spectrum driver does, to easily welcome more events later (for example NETDEV_PRECHANGEUPPER) and use netdev helpers (such as netif_is_bridge_master). Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Acked-by: Jiri Pirko <jiri@mellanox.com> Acked-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
1189 lines
28 KiB
C
1189 lines
28 KiB
C
/*
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* net/dsa/slave.c - Slave device handling
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* Copyright (c) 2008-2009 Marvell Semiconductor
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include <linux/list.h>
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#include <linux/etherdevice.h>
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#include <linux/netdevice.h>
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#include <linux/phy.h>
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#include <linux/phy_fixed.h>
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#include <linux/of_net.h>
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#include <linux/of_mdio.h>
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#include <linux/mdio.h>
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#include <net/rtnetlink.h>
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#include <net/switchdev.h>
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#include <linux/if_bridge.h>
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#include <linux/netpoll.h>
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#include "dsa_priv.h"
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/* slave mii_bus handling ***************************************************/
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static int dsa_slave_phy_read(struct mii_bus *bus, int addr, int reg)
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{
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struct dsa_switch *ds = bus->priv;
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if (ds->phys_mii_mask & (1 << addr))
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return ds->drv->phy_read(ds, addr, reg);
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return 0xffff;
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}
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static int dsa_slave_phy_write(struct mii_bus *bus, int addr, int reg, u16 val)
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{
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struct dsa_switch *ds = bus->priv;
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if (ds->phys_mii_mask & (1 << addr))
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return ds->drv->phy_write(ds, addr, reg, val);
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return 0;
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}
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void dsa_slave_mii_bus_init(struct dsa_switch *ds)
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{
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ds->slave_mii_bus->priv = (void *)ds;
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ds->slave_mii_bus->name = "dsa slave smi";
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ds->slave_mii_bus->read = dsa_slave_phy_read;
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ds->slave_mii_bus->write = dsa_slave_phy_write;
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snprintf(ds->slave_mii_bus->id, MII_BUS_ID_SIZE, "dsa-%d:%.2x",
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ds->index, ds->pd->sw_addr);
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ds->slave_mii_bus->parent = ds->master_dev;
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ds->slave_mii_bus->phy_mask = ~ds->phys_mii_mask;
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}
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/* slave device handling ****************************************************/
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static int dsa_slave_get_iflink(const struct net_device *dev)
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{
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struct dsa_slave_priv *p = netdev_priv(dev);
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return p->parent->dst->master_netdev->ifindex;
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}
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static inline bool dsa_port_is_bridged(struct dsa_slave_priv *p)
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{
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return !!p->bridge_dev;
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}
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static int dsa_slave_open(struct net_device *dev)
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{
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struct dsa_slave_priv *p = netdev_priv(dev);
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struct net_device *master = p->parent->dst->master_netdev;
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struct dsa_switch *ds = p->parent;
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u8 stp_state = dsa_port_is_bridged(p) ?
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BR_STATE_BLOCKING : BR_STATE_FORWARDING;
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int err;
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if (!(master->flags & IFF_UP))
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return -ENETDOWN;
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if (!ether_addr_equal(dev->dev_addr, master->dev_addr)) {
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err = dev_uc_add(master, dev->dev_addr);
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if (err < 0)
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goto out;
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}
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if (dev->flags & IFF_ALLMULTI) {
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err = dev_set_allmulti(master, 1);
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if (err < 0)
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goto del_unicast;
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}
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if (dev->flags & IFF_PROMISC) {
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err = dev_set_promiscuity(master, 1);
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if (err < 0)
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goto clear_allmulti;
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}
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if (ds->drv->port_enable) {
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err = ds->drv->port_enable(ds, p->port, p->phy);
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if (err)
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goto clear_promisc;
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}
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if (ds->drv->port_stp_update)
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ds->drv->port_stp_update(ds, p->port, stp_state);
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if (p->phy)
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phy_start(p->phy);
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return 0;
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clear_promisc:
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if (dev->flags & IFF_PROMISC)
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dev_set_promiscuity(master, -1);
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clear_allmulti:
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if (dev->flags & IFF_ALLMULTI)
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dev_set_allmulti(master, -1);
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del_unicast:
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if (!ether_addr_equal(dev->dev_addr, master->dev_addr))
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dev_uc_del(master, dev->dev_addr);
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out:
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return err;
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}
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static int dsa_slave_close(struct net_device *dev)
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{
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struct dsa_slave_priv *p = netdev_priv(dev);
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struct net_device *master = p->parent->dst->master_netdev;
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struct dsa_switch *ds = p->parent;
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if (p->phy)
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phy_stop(p->phy);
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dev_mc_unsync(master, dev);
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dev_uc_unsync(master, dev);
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if (dev->flags & IFF_ALLMULTI)
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dev_set_allmulti(master, -1);
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if (dev->flags & IFF_PROMISC)
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dev_set_promiscuity(master, -1);
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if (!ether_addr_equal(dev->dev_addr, master->dev_addr))
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dev_uc_del(master, dev->dev_addr);
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if (ds->drv->port_disable)
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ds->drv->port_disable(ds, p->port, p->phy);
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if (ds->drv->port_stp_update)
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ds->drv->port_stp_update(ds, p->port, BR_STATE_DISABLED);
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return 0;
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}
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static void dsa_slave_change_rx_flags(struct net_device *dev, int change)
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{
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struct dsa_slave_priv *p = netdev_priv(dev);
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struct net_device *master = p->parent->dst->master_netdev;
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if (change & IFF_ALLMULTI)
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dev_set_allmulti(master, dev->flags & IFF_ALLMULTI ? 1 : -1);
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if (change & IFF_PROMISC)
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dev_set_promiscuity(master, dev->flags & IFF_PROMISC ? 1 : -1);
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}
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static void dsa_slave_set_rx_mode(struct net_device *dev)
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{
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struct dsa_slave_priv *p = netdev_priv(dev);
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struct net_device *master = p->parent->dst->master_netdev;
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dev_mc_sync(master, dev);
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dev_uc_sync(master, dev);
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}
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static int dsa_slave_set_mac_address(struct net_device *dev, void *a)
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{
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struct dsa_slave_priv *p = netdev_priv(dev);
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struct net_device *master = p->parent->dst->master_netdev;
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struct sockaddr *addr = a;
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int err;
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if (!is_valid_ether_addr(addr->sa_data))
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return -EADDRNOTAVAIL;
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if (!(dev->flags & IFF_UP))
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goto out;
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if (!ether_addr_equal(addr->sa_data, master->dev_addr)) {
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err = dev_uc_add(master, addr->sa_data);
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if (err < 0)
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return err;
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}
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if (!ether_addr_equal(dev->dev_addr, master->dev_addr))
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dev_uc_del(master, dev->dev_addr);
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out:
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ether_addr_copy(dev->dev_addr, addr->sa_data);
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return 0;
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}
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static int dsa_slave_port_vlan_add(struct net_device *dev,
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const struct switchdev_obj_port_vlan *vlan,
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struct switchdev_trans *trans)
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{
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struct dsa_slave_priv *p = netdev_priv(dev);
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struct dsa_switch *ds = p->parent;
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int err;
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if (switchdev_trans_ph_prepare(trans)) {
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if (!ds->drv->port_vlan_prepare || !ds->drv->port_vlan_add)
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return -EOPNOTSUPP;
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err = ds->drv->port_vlan_prepare(ds, p->port, vlan, trans);
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if (err)
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return err;
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} else {
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err = ds->drv->port_vlan_add(ds, p->port, vlan, trans);
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if (err)
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return err;
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}
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return 0;
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}
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static int dsa_slave_port_vlan_del(struct net_device *dev,
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const struct switchdev_obj_port_vlan *vlan)
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{
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struct dsa_slave_priv *p = netdev_priv(dev);
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struct dsa_switch *ds = p->parent;
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if (!ds->drv->port_vlan_del)
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return -EOPNOTSUPP;
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return ds->drv->port_vlan_del(ds, p->port, vlan);
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}
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static int dsa_slave_port_vlan_dump(struct net_device *dev,
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struct switchdev_obj_port_vlan *vlan,
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switchdev_obj_dump_cb_t *cb)
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{
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struct dsa_slave_priv *p = netdev_priv(dev);
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struct dsa_switch *ds = p->parent;
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if (ds->drv->port_vlan_dump)
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return ds->drv->port_vlan_dump(ds, p->port, vlan, cb);
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return -EOPNOTSUPP;
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}
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static int dsa_slave_port_fdb_add(struct net_device *dev,
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const struct switchdev_obj_port_fdb *fdb,
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struct switchdev_trans *trans)
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{
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struct dsa_slave_priv *p = netdev_priv(dev);
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struct dsa_switch *ds = p->parent;
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int ret;
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if (!ds->drv->port_fdb_prepare || !ds->drv->port_fdb_add)
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return -EOPNOTSUPP;
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if (switchdev_trans_ph_prepare(trans))
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ret = ds->drv->port_fdb_prepare(ds, p->port, fdb, trans);
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else
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ret = ds->drv->port_fdb_add(ds, p->port, fdb, trans);
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return ret;
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}
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static int dsa_slave_port_fdb_del(struct net_device *dev,
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const struct switchdev_obj_port_fdb *fdb)
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{
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struct dsa_slave_priv *p = netdev_priv(dev);
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struct dsa_switch *ds = p->parent;
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int ret = -EOPNOTSUPP;
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if (ds->drv->port_fdb_del)
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ret = ds->drv->port_fdb_del(ds, p->port, fdb);
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return ret;
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}
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static int dsa_slave_port_fdb_dump(struct net_device *dev,
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struct switchdev_obj_port_fdb *fdb,
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switchdev_obj_dump_cb_t *cb)
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{
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struct dsa_slave_priv *p = netdev_priv(dev);
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struct dsa_switch *ds = p->parent;
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if (ds->drv->port_fdb_dump)
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return ds->drv->port_fdb_dump(ds, p->port, fdb, cb);
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return -EOPNOTSUPP;
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}
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static int dsa_slave_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
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{
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struct dsa_slave_priv *p = netdev_priv(dev);
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if (p->phy != NULL)
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return phy_mii_ioctl(p->phy, ifr, cmd);
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return -EOPNOTSUPP;
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}
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static int dsa_slave_stp_update(struct net_device *dev, u8 state)
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{
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struct dsa_slave_priv *p = netdev_priv(dev);
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struct dsa_switch *ds = p->parent;
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int ret = -EOPNOTSUPP;
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if (ds->drv->port_stp_update)
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ret = ds->drv->port_stp_update(ds, p->port, state);
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return ret;
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}
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static int dsa_slave_vlan_filtering(struct net_device *dev,
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const struct switchdev_attr *attr,
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struct switchdev_trans *trans)
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{
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struct dsa_slave_priv *p = netdev_priv(dev);
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struct dsa_switch *ds = p->parent;
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/* bridge skips -EOPNOTSUPP, so skip the prepare phase */
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if (switchdev_trans_ph_prepare(trans))
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return 0;
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if (ds->drv->port_vlan_filtering)
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return ds->drv->port_vlan_filtering(ds, p->port,
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attr->u.vlan_filtering);
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return 0;
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}
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static int dsa_slave_port_attr_set(struct net_device *dev,
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const struct switchdev_attr *attr,
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struct switchdev_trans *trans)
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{
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struct dsa_slave_priv *p = netdev_priv(dev);
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struct dsa_switch *ds = p->parent;
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int ret;
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switch (attr->id) {
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case SWITCHDEV_ATTR_ID_PORT_STP_STATE:
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if (switchdev_trans_ph_prepare(trans))
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ret = ds->drv->port_stp_update ? 0 : -EOPNOTSUPP;
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else
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ret = ds->drv->port_stp_update(ds, p->port,
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attr->u.stp_state);
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break;
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case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING:
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ret = dsa_slave_vlan_filtering(dev, attr, trans);
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break;
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default:
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ret = -EOPNOTSUPP;
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break;
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}
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return ret;
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}
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static int dsa_slave_port_obj_add(struct net_device *dev,
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const struct switchdev_obj *obj,
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struct switchdev_trans *trans)
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{
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int err;
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/* For the prepare phase, ensure the full set of changes is feasable in
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* one go in order to signal a failure properly. If an operation is not
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* supported, return -EOPNOTSUPP.
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*/
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switch (obj->id) {
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case SWITCHDEV_OBJ_ID_PORT_FDB:
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err = dsa_slave_port_fdb_add(dev,
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SWITCHDEV_OBJ_PORT_FDB(obj),
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trans);
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break;
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case SWITCHDEV_OBJ_ID_PORT_VLAN:
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err = dsa_slave_port_vlan_add(dev,
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SWITCHDEV_OBJ_PORT_VLAN(obj),
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trans);
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break;
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default:
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err = -EOPNOTSUPP;
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break;
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}
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return err;
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}
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static int dsa_slave_port_obj_del(struct net_device *dev,
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const struct switchdev_obj *obj)
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{
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int err;
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switch (obj->id) {
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case SWITCHDEV_OBJ_ID_PORT_FDB:
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err = dsa_slave_port_fdb_del(dev,
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SWITCHDEV_OBJ_PORT_FDB(obj));
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break;
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case SWITCHDEV_OBJ_ID_PORT_VLAN:
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err = dsa_slave_port_vlan_del(dev,
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SWITCHDEV_OBJ_PORT_VLAN(obj));
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break;
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default:
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err = -EOPNOTSUPP;
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break;
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}
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return err;
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}
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static int dsa_slave_port_obj_dump(struct net_device *dev,
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struct switchdev_obj *obj,
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switchdev_obj_dump_cb_t *cb)
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{
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int err;
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switch (obj->id) {
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case SWITCHDEV_OBJ_ID_PORT_FDB:
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err = dsa_slave_port_fdb_dump(dev,
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SWITCHDEV_OBJ_PORT_FDB(obj),
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cb);
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break;
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case SWITCHDEV_OBJ_ID_PORT_VLAN:
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err = dsa_slave_port_vlan_dump(dev,
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SWITCHDEV_OBJ_PORT_VLAN(obj),
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cb);
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break;
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default:
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err = -EOPNOTSUPP;
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break;
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}
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return err;
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}
|
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static int dsa_slave_bridge_port_join(struct net_device *dev,
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struct net_device *br)
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{
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struct dsa_slave_priv *p = netdev_priv(dev);
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struct dsa_switch *ds = p->parent;
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int ret = -EOPNOTSUPP;
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p->bridge_dev = br;
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if (ds->drv->port_bridge_join)
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ret = ds->drv->port_bridge_join(ds, p->port, br);
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return ret == -EOPNOTSUPP ? 0 : ret;
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}
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static void dsa_slave_bridge_port_leave(struct net_device *dev)
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{
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struct dsa_slave_priv *p = netdev_priv(dev);
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struct dsa_switch *ds = p->parent;
|
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|
|
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if (ds->drv->port_bridge_leave)
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ds->drv->port_bridge_leave(ds, p->port);
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p->bridge_dev = NULL;
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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_slave_stp_update(dev, BR_STATE_FORWARDING);
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}
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|
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static int dsa_slave_port_attr_get(struct net_device *dev,
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struct switchdev_attr *attr)
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{
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struct dsa_slave_priv *p = netdev_priv(dev);
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struct dsa_switch *ds = p->parent;
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switch (attr->id) {
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case SWITCHDEV_ATTR_ID_PORT_PARENT_ID:
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attr->u.ppid.id_len = sizeof(ds->index);
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memcpy(&attr->u.ppid.id, &ds->index, attr->u.ppid.id_len);
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break;
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default:
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return -EOPNOTSUPP;
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}
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return 0;
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}
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|
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static inline netdev_tx_t dsa_netpoll_send_skb(struct dsa_slave_priv *p,
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struct sk_buff *skb)
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{
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#ifdef CONFIG_NET_POLL_CONTROLLER
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if (p->netpoll)
|
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netpoll_send_skb(p->netpoll, skb);
|
|
#else
|
|
BUG();
|
|
#endif
|
|
return NETDEV_TX_OK;
|
|
}
|
|
|
|
static netdev_tx_t dsa_slave_xmit(struct sk_buff *skb, struct net_device *dev)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
struct sk_buff *nskb;
|
|
|
|
dev->stats.tx_packets++;
|
|
dev->stats.tx_bytes += skb->len;
|
|
|
|
/* Transmit function may have to reallocate the original SKB */
|
|
nskb = p->xmit(skb, dev);
|
|
if (!nskb)
|
|
return NETDEV_TX_OK;
|
|
|
|
/* SKB for netpoll still need to be mangled with the protocol-specific
|
|
* tag to be successfully transmitted
|
|
*/
|
|
if (unlikely(netpoll_tx_running(dev)))
|
|
return dsa_netpoll_send_skb(p, nskb);
|
|
|
|
/* Queue the SKB for transmission on the parent interface, but
|
|
* do not modify its EtherType
|
|
*/
|
|
nskb->dev = p->parent->dst->master_netdev;
|
|
dev_queue_xmit(nskb);
|
|
|
|
return NETDEV_TX_OK;
|
|
}
|
|
|
|
static struct sk_buff *dsa_slave_notag_xmit(struct sk_buff *skb,
|
|
struct net_device *dev)
|
|
{
|
|
/* Just return the original SKB */
|
|
return skb;
|
|
}
|
|
|
|
|
|
/* ethtool operations *******************************************************/
|
|
static int
|
|
dsa_slave_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
int err;
|
|
|
|
err = -EOPNOTSUPP;
|
|
if (p->phy != NULL) {
|
|
err = phy_read_status(p->phy);
|
|
if (err == 0)
|
|
err = phy_ethtool_gset(p->phy, cmd);
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
static int
|
|
dsa_slave_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
|
|
if (p->phy != NULL)
|
|
return phy_ethtool_sset(p->phy, cmd);
|
|
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
static void dsa_slave_get_drvinfo(struct net_device *dev,
|
|
struct ethtool_drvinfo *drvinfo)
|
|
{
|
|
strlcpy(drvinfo->driver, "dsa", sizeof(drvinfo->driver));
|
|
strlcpy(drvinfo->version, dsa_driver_version, sizeof(drvinfo->version));
|
|
strlcpy(drvinfo->fw_version, "N/A", sizeof(drvinfo->fw_version));
|
|
strlcpy(drvinfo->bus_info, "platform", sizeof(drvinfo->bus_info));
|
|
}
|
|
|
|
static int dsa_slave_get_regs_len(struct net_device *dev)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
struct dsa_switch *ds = p->parent;
|
|
|
|
if (ds->drv->get_regs_len)
|
|
return ds->drv->get_regs_len(ds, p->port);
|
|
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
static void
|
|
dsa_slave_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *_p)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
struct dsa_switch *ds = p->parent;
|
|
|
|
if (ds->drv->get_regs)
|
|
ds->drv->get_regs(ds, p->port, regs, _p);
|
|
}
|
|
|
|
static int dsa_slave_nway_reset(struct net_device *dev)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
|
|
if (p->phy != NULL)
|
|
return genphy_restart_aneg(p->phy);
|
|
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
static u32 dsa_slave_get_link(struct net_device *dev)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
|
|
if (p->phy != NULL) {
|
|
genphy_update_link(p->phy);
|
|
return p->phy->link;
|
|
}
|
|
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
static int dsa_slave_get_eeprom_len(struct net_device *dev)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
struct dsa_switch *ds = p->parent;
|
|
|
|
if (ds->pd->eeprom_len)
|
|
return ds->pd->eeprom_len;
|
|
|
|
if (ds->drv->get_eeprom_len)
|
|
return ds->drv->get_eeprom_len(ds);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int dsa_slave_get_eeprom(struct net_device *dev,
|
|
struct ethtool_eeprom *eeprom, u8 *data)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
struct dsa_switch *ds = p->parent;
|
|
|
|
if (ds->drv->get_eeprom)
|
|
return ds->drv->get_eeprom(ds, eeprom, data);
|
|
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
static int dsa_slave_set_eeprom(struct net_device *dev,
|
|
struct ethtool_eeprom *eeprom, u8 *data)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
struct dsa_switch *ds = p->parent;
|
|
|
|
if (ds->drv->set_eeprom)
|
|
return ds->drv->set_eeprom(ds, eeprom, data);
|
|
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
static void dsa_slave_get_strings(struct net_device *dev,
|
|
uint32_t stringset, uint8_t *data)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
struct dsa_switch *ds = p->parent;
|
|
|
|
if (stringset == ETH_SS_STATS) {
|
|
int len = ETH_GSTRING_LEN;
|
|
|
|
strncpy(data, "tx_packets", len);
|
|
strncpy(data + len, "tx_bytes", len);
|
|
strncpy(data + 2 * len, "rx_packets", len);
|
|
strncpy(data + 3 * len, "rx_bytes", len);
|
|
if (ds->drv->get_strings != NULL)
|
|
ds->drv->get_strings(ds, p->port, data + 4 * len);
|
|
}
|
|
}
|
|
|
|
static void dsa_slave_get_ethtool_stats(struct net_device *dev,
|
|
struct ethtool_stats *stats,
|
|
uint64_t *data)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
struct dsa_switch *ds = p->parent;
|
|
|
|
data[0] = p->dev->stats.tx_packets;
|
|
data[1] = p->dev->stats.tx_bytes;
|
|
data[2] = p->dev->stats.rx_packets;
|
|
data[3] = p->dev->stats.rx_bytes;
|
|
if (ds->drv->get_ethtool_stats != NULL)
|
|
ds->drv->get_ethtool_stats(ds, p->port, data + 4);
|
|
}
|
|
|
|
static int dsa_slave_get_sset_count(struct net_device *dev, int sset)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
struct dsa_switch *ds = p->parent;
|
|
|
|
if (sset == ETH_SS_STATS) {
|
|
int count;
|
|
|
|
count = 4;
|
|
if (ds->drv->get_sset_count != NULL)
|
|
count += ds->drv->get_sset_count(ds);
|
|
|
|
return count;
|
|
}
|
|
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
static void dsa_slave_get_wol(struct net_device *dev, struct ethtool_wolinfo *w)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
struct dsa_switch *ds = p->parent;
|
|
|
|
if (ds->drv->get_wol)
|
|
ds->drv->get_wol(ds, p->port, w);
|
|
}
|
|
|
|
static int dsa_slave_set_wol(struct net_device *dev, struct ethtool_wolinfo *w)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
struct dsa_switch *ds = p->parent;
|
|
int ret = -EOPNOTSUPP;
|
|
|
|
if (ds->drv->set_wol)
|
|
ret = ds->drv->set_wol(ds, p->port, w);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int dsa_slave_set_eee(struct net_device *dev, struct ethtool_eee *e)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
struct dsa_switch *ds = p->parent;
|
|
int ret;
|
|
|
|
if (!ds->drv->set_eee)
|
|
return -EOPNOTSUPP;
|
|
|
|
ret = ds->drv->set_eee(ds, p->port, p->phy, e);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (p->phy)
|
|
ret = phy_ethtool_set_eee(p->phy, e);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int dsa_slave_get_eee(struct net_device *dev, struct ethtool_eee *e)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
struct dsa_switch *ds = p->parent;
|
|
int ret;
|
|
|
|
if (!ds->drv->get_eee)
|
|
return -EOPNOTSUPP;
|
|
|
|
ret = ds->drv->get_eee(ds, p->port, e);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (p->phy)
|
|
ret = phy_ethtool_get_eee(p->phy, e);
|
|
|
|
return ret;
|
|
}
|
|
|
|
#ifdef CONFIG_NET_POLL_CONTROLLER
|
|
static int dsa_slave_netpoll_setup(struct net_device *dev,
|
|
struct netpoll_info *ni)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
struct dsa_switch *ds = p->parent;
|
|
struct net_device *master = ds->dst->master_netdev;
|
|
struct netpoll *netpoll;
|
|
int err = 0;
|
|
|
|
netpoll = kzalloc(sizeof(*netpoll), GFP_KERNEL);
|
|
if (!netpoll)
|
|
return -ENOMEM;
|
|
|
|
err = __netpoll_setup(netpoll, master);
|
|
if (err) {
|
|
kfree(netpoll);
|
|
goto out;
|
|
}
|
|
|
|
p->netpoll = netpoll;
|
|
out:
|
|
return err;
|
|
}
|
|
|
|
static void dsa_slave_netpoll_cleanup(struct net_device *dev)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
struct netpoll *netpoll = p->netpoll;
|
|
|
|
if (!netpoll)
|
|
return;
|
|
|
|
p->netpoll = NULL;
|
|
|
|
__netpoll_free_async(netpoll);
|
|
}
|
|
|
|
static void dsa_slave_poll_controller(struct net_device *dev)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
static const struct ethtool_ops dsa_slave_ethtool_ops = {
|
|
.get_settings = dsa_slave_get_settings,
|
|
.set_settings = dsa_slave_set_settings,
|
|
.get_drvinfo = dsa_slave_get_drvinfo,
|
|
.get_regs_len = dsa_slave_get_regs_len,
|
|
.get_regs = dsa_slave_get_regs,
|
|
.nway_reset = dsa_slave_nway_reset,
|
|
.get_link = dsa_slave_get_link,
|
|
.get_eeprom_len = dsa_slave_get_eeprom_len,
|
|
.get_eeprom = dsa_slave_get_eeprom,
|
|
.set_eeprom = dsa_slave_set_eeprom,
|
|
.get_strings = dsa_slave_get_strings,
|
|
.get_ethtool_stats = dsa_slave_get_ethtool_stats,
|
|
.get_sset_count = dsa_slave_get_sset_count,
|
|
.set_wol = dsa_slave_set_wol,
|
|
.get_wol = dsa_slave_get_wol,
|
|
.set_eee = dsa_slave_set_eee,
|
|
.get_eee = dsa_slave_get_eee,
|
|
};
|
|
|
|
static const struct net_device_ops dsa_slave_netdev_ops = {
|
|
.ndo_open = dsa_slave_open,
|
|
.ndo_stop = dsa_slave_close,
|
|
.ndo_start_xmit = dsa_slave_xmit,
|
|
.ndo_change_rx_flags = dsa_slave_change_rx_flags,
|
|
.ndo_set_rx_mode = dsa_slave_set_rx_mode,
|
|
.ndo_set_mac_address = dsa_slave_set_mac_address,
|
|
.ndo_fdb_add = switchdev_port_fdb_add,
|
|
.ndo_fdb_del = switchdev_port_fdb_del,
|
|
.ndo_fdb_dump = switchdev_port_fdb_dump,
|
|
.ndo_do_ioctl = dsa_slave_ioctl,
|
|
.ndo_get_iflink = dsa_slave_get_iflink,
|
|
#ifdef CONFIG_NET_POLL_CONTROLLER
|
|
.ndo_netpoll_setup = dsa_slave_netpoll_setup,
|
|
.ndo_netpoll_cleanup = dsa_slave_netpoll_cleanup,
|
|
.ndo_poll_controller = dsa_slave_poll_controller,
|
|
#endif
|
|
.ndo_bridge_getlink = switchdev_port_bridge_getlink,
|
|
.ndo_bridge_setlink = switchdev_port_bridge_setlink,
|
|
.ndo_bridge_dellink = switchdev_port_bridge_dellink,
|
|
};
|
|
|
|
static const struct switchdev_ops dsa_slave_switchdev_ops = {
|
|
.switchdev_port_attr_get = dsa_slave_port_attr_get,
|
|
.switchdev_port_attr_set = dsa_slave_port_attr_set,
|
|
.switchdev_port_obj_add = dsa_slave_port_obj_add,
|
|
.switchdev_port_obj_del = dsa_slave_port_obj_del,
|
|
.switchdev_port_obj_dump = dsa_slave_port_obj_dump,
|
|
};
|
|
|
|
static struct device_type dsa_type = {
|
|
.name = "dsa",
|
|
};
|
|
|
|
static void dsa_slave_adjust_link(struct net_device *dev)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
struct dsa_switch *ds = p->parent;
|
|
unsigned int status_changed = 0;
|
|
|
|
if (p->old_link != p->phy->link) {
|
|
status_changed = 1;
|
|
p->old_link = p->phy->link;
|
|
}
|
|
|
|
if (p->old_duplex != p->phy->duplex) {
|
|
status_changed = 1;
|
|
p->old_duplex = p->phy->duplex;
|
|
}
|
|
|
|
if (p->old_pause != p->phy->pause) {
|
|
status_changed = 1;
|
|
p->old_pause = p->phy->pause;
|
|
}
|
|
|
|
if (ds->drv->adjust_link && status_changed)
|
|
ds->drv->adjust_link(ds, p->port, p->phy);
|
|
|
|
if (status_changed)
|
|
phy_print_status(p->phy);
|
|
}
|
|
|
|
static int dsa_slave_fixed_link_update(struct net_device *dev,
|
|
struct fixed_phy_status *status)
|
|
{
|
|
struct dsa_slave_priv *p;
|
|
struct dsa_switch *ds;
|
|
|
|
if (dev) {
|
|
p = netdev_priv(dev);
|
|
ds = p->parent;
|
|
if (ds->drv->fixed_link_update)
|
|
ds->drv->fixed_link_update(ds, p->port, status);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* slave device setup *******************************************************/
|
|
static int dsa_slave_phy_connect(struct dsa_slave_priv *p,
|
|
struct net_device *slave_dev,
|
|
int addr)
|
|
{
|
|
struct dsa_switch *ds = p->parent;
|
|
|
|
p->phy = mdiobus_get_phy(ds->slave_mii_bus, addr);
|
|
if (!p->phy) {
|
|
netdev_err(slave_dev, "no phy at %d\n", addr);
|
|
return -ENODEV;
|
|
}
|
|
|
|
/* Use already configured phy mode */
|
|
if (p->phy_interface == PHY_INTERFACE_MODE_NA)
|
|
p->phy_interface = p->phy->interface;
|
|
phy_connect_direct(slave_dev, p->phy, dsa_slave_adjust_link,
|
|
p->phy_interface);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int dsa_slave_phy_setup(struct dsa_slave_priv *p,
|
|
struct net_device *slave_dev)
|
|
{
|
|
struct dsa_switch *ds = p->parent;
|
|
struct dsa_chip_data *cd = ds->pd;
|
|
struct device_node *phy_dn, *port_dn;
|
|
bool phy_is_fixed = false;
|
|
u32 phy_flags = 0;
|
|
int mode, ret;
|
|
|
|
port_dn = cd->port_dn[p->port];
|
|
mode = of_get_phy_mode(port_dn);
|
|
if (mode < 0)
|
|
mode = PHY_INTERFACE_MODE_NA;
|
|
p->phy_interface = mode;
|
|
|
|
phy_dn = of_parse_phandle(port_dn, "phy-handle", 0);
|
|
if (of_phy_is_fixed_link(port_dn)) {
|
|
/* In the case of a fixed PHY, the DT node associated
|
|
* to the fixed PHY is the Port DT node
|
|
*/
|
|
ret = of_phy_register_fixed_link(port_dn);
|
|
if (ret) {
|
|
netdev_err(slave_dev, "failed to register fixed PHY: %d\n", ret);
|
|
return ret;
|
|
}
|
|
phy_is_fixed = true;
|
|
phy_dn = port_dn;
|
|
}
|
|
|
|
if (ds->drv->get_phy_flags)
|
|
phy_flags = ds->drv->get_phy_flags(ds, p->port);
|
|
|
|
if (phy_dn) {
|
|
int phy_id = of_mdio_parse_addr(&slave_dev->dev, phy_dn);
|
|
|
|
/* If this PHY address is part of phys_mii_mask, which means
|
|
* that we need to divert reads and writes to/from it, then we
|
|
* want to bind this device using the slave MII bus created by
|
|
* DSA to make that happen.
|
|
*/
|
|
if (!phy_is_fixed && phy_id >= 0 &&
|
|
(ds->phys_mii_mask & (1 << phy_id))) {
|
|
ret = dsa_slave_phy_connect(p, slave_dev, phy_id);
|
|
if (ret) {
|
|
netdev_err(slave_dev, "failed to connect to phy%d: %d\n", phy_id, ret);
|
|
return ret;
|
|
}
|
|
} else {
|
|
p->phy = of_phy_connect(slave_dev, phy_dn,
|
|
dsa_slave_adjust_link,
|
|
phy_flags,
|
|
p->phy_interface);
|
|
}
|
|
}
|
|
|
|
if (p->phy && phy_is_fixed)
|
|
fixed_phy_set_link_update(p->phy, dsa_slave_fixed_link_update);
|
|
|
|
/* We could not connect to a designated PHY, so use the switch internal
|
|
* MDIO bus instead
|
|
*/
|
|
if (!p->phy) {
|
|
ret = dsa_slave_phy_connect(p, slave_dev, p->port);
|
|
if (ret) {
|
|
netdev_err(slave_dev, "failed to connect to port %d: %d\n", p->port, ret);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
phy_attached_info(p->phy);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct lock_class_key dsa_slave_netdev_xmit_lock_key;
|
|
static void dsa_slave_set_lockdep_class_one(struct net_device *dev,
|
|
struct netdev_queue *txq,
|
|
void *_unused)
|
|
{
|
|
lockdep_set_class(&txq->_xmit_lock,
|
|
&dsa_slave_netdev_xmit_lock_key);
|
|
}
|
|
|
|
int dsa_slave_suspend(struct net_device *slave_dev)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(slave_dev);
|
|
|
|
if (p->phy) {
|
|
phy_stop(p->phy);
|
|
p->old_pause = -1;
|
|
p->old_link = -1;
|
|
p->old_duplex = -1;
|
|
phy_suspend(p->phy);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int dsa_slave_resume(struct net_device *slave_dev)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(slave_dev);
|
|
|
|
netif_device_attach(slave_dev);
|
|
|
|
if (p->phy) {
|
|
phy_resume(p->phy);
|
|
phy_start(p->phy);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int dsa_slave_create(struct dsa_switch *ds, struct device *parent,
|
|
int port, char *name)
|
|
{
|
|
struct net_device *master = ds->dst->master_netdev;
|
|
struct net_device *slave_dev;
|
|
struct dsa_slave_priv *p;
|
|
int ret;
|
|
|
|
slave_dev = alloc_netdev(sizeof(struct dsa_slave_priv), name,
|
|
NET_NAME_UNKNOWN, ether_setup);
|
|
if (slave_dev == NULL)
|
|
return -ENOMEM;
|
|
|
|
slave_dev->features = master->vlan_features;
|
|
slave_dev->ethtool_ops = &dsa_slave_ethtool_ops;
|
|
eth_hw_addr_inherit(slave_dev, master);
|
|
slave_dev->priv_flags |= IFF_NO_QUEUE;
|
|
slave_dev->netdev_ops = &dsa_slave_netdev_ops;
|
|
slave_dev->switchdev_ops = &dsa_slave_switchdev_ops;
|
|
SET_NETDEV_DEVTYPE(slave_dev, &dsa_type);
|
|
|
|
netdev_for_each_tx_queue(slave_dev, dsa_slave_set_lockdep_class_one,
|
|
NULL);
|
|
|
|
SET_NETDEV_DEV(slave_dev, parent);
|
|
slave_dev->dev.of_node = ds->pd->port_dn[port];
|
|
slave_dev->vlan_features = master->vlan_features;
|
|
|
|
p = netdev_priv(slave_dev);
|
|
p->dev = slave_dev;
|
|
p->parent = ds;
|
|
p->port = port;
|
|
|
|
switch (ds->dst->tag_protocol) {
|
|
#ifdef CONFIG_NET_DSA_TAG_DSA
|
|
case DSA_TAG_PROTO_DSA:
|
|
p->xmit = dsa_netdev_ops.xmit;
|
|
break;
|
|
#endif
|
|
#ifdef CONFIG_NET_DSA_TAG_EDSA
|
|
case DSA_TAG_PROTO_EDSA:
|
|
p->xmit = edsa_netdev_ops.xmit;
|
|
break;
|
|
#endif
|
|
#ifdef CONFIG_NET_DSA_TAG_TRAILER
|
|
case DSA_TAG_PROTO_TRAILER:
|
|
p->xmit = trailer_netdev_ops.xmit;
|
|
break;
|
|
#endif
|
|
#ifdef CONFIG_NET_DSA_TAG_BRCM
|
|
case DSA_TAG_PROTO_BRCM:
|
|
p->xmit = brcm_netdev_ops.xmit;
|
|
break;
|
|
#endif
|
|
default:
|
|
p->xmit = dsa_slave_notag_xmit;
|
|
break;
|
|
}
|
|
|
|
p->old_pause = -1;
|
|
p->old_link = -1;
|
|
p->old_duplex = -1;
|
|
|
|
ds->ports[port] = slave_dev;
|
|
ret = register_netdev(slave_dev);
|
|
if (ret) {
|
|
netdev_err(master, "error %d registering interface %s\n",
|
|
ret, slave_dev->name);
|
|
ds->ports[port] = NULL;
|
|
free_netdev(slave_dev);
|
|
return ret;
|
|
}
|
|
|
|
netif_carrier_off(slave_dev);
|
|
|
|
ret = dsa_slave_phy_setup(p, slave_dev);
|
|
if (ret) {
|
|
netdev_err(master, "error %d setting up slave phy\n", ret);
|
|
unregister_netdev(slave_dev);
|
|
free_netdev(slave_dev);
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
void dsa_slave_destroy(struct net_device *slave_dev)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(slave_dev);
|
|
|
|
netif_carrier_off(slave_dev);
|
|
if (p->phy)
|
|
phy_disconnect(p->phy);
|
|
unregister_netdev(slave_dev);
|
|
free_netdev(slave_dev);
|
|
}
|
|
|
|
static bool dsa_slave_dev_check(struct net_device *dev)
|
|
{
|
|
return dev->netdev_ops == &dsa_slave_netdev_ops;
|
|
}
|
|
|
|
static int dsa_slave_port_upper_event(struct net_device *dev,
|
|
unsigned long event, void *ptr)
|
|
{
|
|
struct netdev_notifier_changeupper_info *info = ptr;
|
|
struct net_device *upper = info->upper_dev;
|
|
int err = 0;
|
|
|
|
switch (event) {
|
|
case NETDEV_CHANGEUPPER:
|
|
if (netif_is_bridge_master(upper)) {
|
|
if (info->linking)
|
|
err = dsa_slave_bridge_port_join(dev, upper);
|
|
else
|
|
dsa_slave_bridge_port_leave(dev);
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
return notifier_from_errno(err);
|
|
}
|
|
|
|
static int dsa_slave_port_event(struct net_device *dev, unsigned long event,
|
|
void *ptr)
|
|
{
|
|
switch (event) {
|
|
case NETDEV_CHANGEUPPER:
|
|
return dsa_slave_port_upper_event(dev, event, ptr);
|
|
}
|
|
|
|
return NOTIFY_DONE;
|
|
}
|
|
|
|
int dsa_slave_netdevice_event(struct notifier_block *unused,
|
|
unsigned long event, void *ptr)
|
|
{
|
|
struct net_device *dev = netdev_notifier_info_to_dev(ptr);
|
|
|
|
if (dsa_slave_dev_check(dev))
|
|
return dsa_slave_port_event(dev, event, ptr);
|
|
|
|
return NOTIFY_DONE;
|
|
}
|