mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-06 01:36:41 +07:00
fe47d56306
As of a86d8becc3
("net: dsa: Factor bottom tag receive functions"),
the rcv caller frees the original SKB in case or error.
Be symmetric with that and make the xmit caller do the same.
At the same time, fix the checkpatch NULL comparison check:
CHECK: Comparison to NULL could be written "!nskb"
#208: FILE: net/dsa/tag_trailer.c:35:
+ if (nskb == NULL)
Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
1277 lines
31 KiB
C
1277 lines
31 KiB
C
/*
|
|
* net/dsa/slave.c - Slave device handling
|
|
* Copyright (c) 2008-2009 Marvell Semiconductor
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*/
|
|
|
|
#include <linux/list.h>
|
|
#include <linux/etherdevice.h>
|
|
#include <linux/netdevice.h>
|
|
#include <linux/phy.h>
|
|
#include <linux/phy_fixed.h>
|
|
#include <linux/of_net.h>
|
|
#include <linux/of_mdio.h>
|
|
#include <linux/mdio.h>
|
|
#include <linux/list.h>
|
|
#include <net/rtnetlink.h>
|
|
#include <net/pkt_cls.h>
|
|
#include <net/tc_act/tc_mirred.h>
|
|
#include <linux/if_bridge.h>
|
|
#include <linux/netpoll.h>
|
|
|
|
#include "dsa_priv.h"
|
|
|
|
static bool dsa_slave_dev_check(struct net_device *dev);
|
|
|
|
/* slave mii_bus handling ***************************************************/
|
|
static int dsa_slave_phy_read(struct mii_bus *bus, int addr, int reg)
|
|
{
|
|
struct dsa_switch *ds = bus->priv;
|
|
|
|
if (ds->phys_mii_mask & (1 << addr))
|
|
return ds->ops->phy_read(ds, addr, reg);
|
|
|
|
return 0xffff;
|
|
}
|
|
|
|
static int dsa_slave_phy_write(struct mii_bus *bus, int addr, int reg, u16 val)
|
|
{
|
|
struct dsa_switch *ds = bus->priv;
|
|
|
|
if (ds->phys_mii_mask & (1 << addr))
|
|
return ds->ops->phy_write(ds, addr, reg, val);
|
|
|
|
return 0;
|
|
}
|
|
|
|
void dsa_slave_mii_bus_init(struct dsa_switch *ds)
|
|
{
|
|
ds->slave_mii_bus->priv = (void *)ds;
|
|
ds->slave_mii_bus->name = "dsa slave smi";
|
|
ds->slave_mii_bus->read = dsa_slave_phy_read;
|
|
ds->slave_mii_bus->write = dsa_slave_phy_write;
|
|
snprintf(ds->slave_mii_bus->id, MII_BUS_ID_SIZE, "dsa-%d.%d",
|
|
ds->dst->tree, ds->index);
|
|
ds->slave_mii_bus->parent = ds->dev;
|
|
ds->slave_mii_bus->phy_mask = ~ds->phys_mii_mask;
|
|
}
|
|
|
|
|
|
/* slave device handling ****************************************************/
|
|
static int dsa_slave_get_iflink(const struct net_device *dev)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
|
|
return p->dp->ds->dst->master_netdev->ifindex;
|
|
}
|
|
|
|
static int dsa_slave_open(struct net_device *dev)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
struct dsa_port *dp = p->dp;
|
|
struct dsa_switch *ds = dp->ds;
|
|
struct net_device *master = ds->dst->master_netdev;
|
|
u8 stp_state = dp->bridge_dev ? BR_STATE_BLOCKING : BR_STATE_FORWARDING;
|
|
int err;
|
|
|
|
if (!(master->flags & IFF_UP))
|
|
return -ENETDOWN;
|
|
|
|
if (!ether_addr_equal(dev->dev_addr, master->dev_addr)) {
|
|
err = dev_uc_add(master, dev->dev_addr);
|
|
if (err < 0)
|
|
goto out;
|
|
}
|
|
|
|
if (dev->flags & IFF_ALLMULTI) {
|
|
err = dev_set_allmulti(master, 1);
|
|
if (err < 0)
|
|
goto del_unicast;
|
|
}
|
|
if (dev->flags & IFF_PROMISC) {
|
|
err = dev_set_promiscuity(master, 1);
|
|
if (err < 0)
|
|
goto clear_allmulti;
|
|
}
|
|
|
|
if (ds->ops->port_enable) {
|
|
err = ds->ops->port_enable(ds, p->dp->index, p->phy);
|
|
if (err)
|
|
goto clear_promisc;
|
|
}
|
|
|
|
dsa_port_set_state_now(p->dp, stp_state);
|
|
|
|
if (p->phy)
|
|
phy_start(p->phy);
|
|
|
|
return 0;
|
|
|
|
clear_promisc:
|
|
if (dev->flags & IFF_PROMISC)
|
|
dev_set_promiscuity(master, -1);
|
|
clear_allmulti:
|
|
if (dev->flags & IFF_ALLMULTI)
|
|
dev_set_allmulti(master, -1);
|
|
del_unicast:
|
|
if (!ether_addr_equal(dev->dev_addr, master->dev_addr))
|
|
dev_uc_del(master, dev->dev_addr);
|
|
out:
|
|
return err;
|
|
}
|
|
|
|
static int dsa_slave_close(struct net_device *dev)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
struct net_device *master = p->dp->ds->dst->master_netdev;
|
|
struct dsa_switch *ds = p->dp->ds;
|
|
|
|
if (p->phy)
|
|
phy_stop(p->phy);
|
|
|
|
dev_mc_unsync(master, dev);
|
|
dev_uc_unsync(master, dev);
|
|
if (dev->flags & IFF_ALLMULTI)
|
|
dev_set_allmulti(master, -1);
|
|
if (dev->flags & IFF_PROMISC)
|
|
dev_set_promiscuity(master, -1);
|
|
|
|
if (!ether_addr_equal(dev->dev_addr, master->dev_addr))
|
|
dev_uc_del(master, dev->dev_addr);
|
|
|
|
if (ds->ops->port_disable)
|
|
ds->ops->port_disable(ds, p->dp->index, p->phy);
|
|
|
|
dsa_port_set_state_now(p->dp, BR_STATE_DISABLED);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void dsa_slave_change_rx_flags(struct net_device *dev, int change)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
struct net_device *master = p->dp->ds->dst->master_netdev;
|
|
|
|
if (change & IFF_ALLMULTI)
|
|
dev_set_allmulti(master, dev->flags & IFF_ALLMULTI ? 1 : -1);
|
|
if (change & IFF_PROMISC)
|
|
dev_set_promiscuity(master, dev->flags & IFF_PROMISC ? 1 : -1);
|
|
}
|
|
|
|
static void dsa_slave_set_rx_mode(struct net_device *dev)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
struct net_device *master = p->dp->ds->dst->master_netdev;
|
|
|
|
dev_mc_sync(master, dev);
|
|
dev_uc_sync(master, dev);
|
|
}
|
|
|
|
static int dsa_slave_set_mac_address(struct net_device *dev, void *a)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
struct net_device *master = p->dp->ds->dst->master_netdev;
|
|
struct sockaddr *addr = a;
|
|
int err;
|
|
|
|
if (!is_valid_ether_addr(addr->sa_data))
|
|
return -EADDRNOTAVAIL;
|
|
|
|
if (!(dev->flags & IFF_UP))
|
|
goto out;
|
|
|
|
if (!ether_addr_equal(addr->sa_data, master->dev_addr)) {
|
|
err = dev_uc_add(master, addr->sa_data);
|
|
if (err < 0)
|
|
return err;
|
|
}
|
|
|
|
if (!ether_addr_equal(dev->dev_addr, master->dev_addr))
|
|
dev_uc_del(master, dev->dev_addr);
|
|
|
|
out:
|
|
ether_addr_copy(dev->dev_addr, addr->sa_data);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int dsa_slave_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
|
|
if (p->phy != NULL)
|
|
return phy_mii_ioctl(p->phy, ifr, cmd);
|
|
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
static int dsa_slave_port_attr_set(struct net_device *dev,
|
|
const struct switchdev_attr *attr,
|
|
struct switchdev_trans *trans)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
struct dsa_port *dp = p->dp;
|
|
int ret;
|
|
|
|
switch (attr->id) {
|
|
case SWITCHDEV_ATTR_ID_PORT_STP_STATE:
|
|
ret = dsa_port_set_state(dp, attr->u.stp_state, trans);
|
|
break;
|
|
case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING:
|
|
ret = dsa_port_vlan_filtering(dp, attr->u.vlan_filtering,
|
|
trans);
|
|
break;
|
|
case SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME:
|
|
ret = dsa_port_ageing_time(dp, attr->u.ageing_time, trans);
|
|
break;
|
|
default:
|
|
ret = -EOPNOTSUPP;
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int dsa_slave_port_obj_add(struct net_device *dev,
|
|
const struct switchdev_obj *obj,
|
|
struct switchdev_trans *trans)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
struct dsa_port *dp = p->dp;
|
|
int err;
|
|
|
|
/* For the prepare phase, ensure the full set of changes is feasable in
|
|
* one go in order to signal a failure properly. If an operation is not
|
|
* supported, return -EOPNOTSUPP.
|
|
*/
|
|
|
|
switch (obj->id) {
|
|
case SWITCHDEV_OBJ_ID_PORT_FDB:
|
|
err = dsa_port_fdb_add(dp, SWITCHDEV_OBJ_PORT_FDB(obj), trans);
|
|
break;
|
|
case SWITCHDEV_OBJ_ID_PORT_MDB:
|
|
err = dsa_port_mdb_add(dp, SWITCHDEV_OBJ_PORT_MDB(obj), trans);
|
|
break;
|
|
case SWITCHDEV_OBJ_ID_PORT_VLAN:
|
|
err = dsa_port_vlan_add(dp, SWITCHDEV_OBJ_PORT_VLAN(obj),
|
|
trans);
|
|
break;
|
|
default:
|
|
err = -EOPNOTSUPP;
|
|
break;
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
static int dsa_slave_port_obj_del(struct net_device *dev,
|
|
const struct switchdev_obj *obj)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
struct dsa_port *dp = p->dp;
|
|
int err;
|
|
|
|
switch (obj->id) {
|
|
case SWITCHDEV_OBJ_ID_PORT_FDB:
|
|
err = dsa_port_fdb_del(dp, SWITCHDEV_OBJ_PORT_FDB(obj));
|
|
break;
|
|
case SWITCHDEV_OBJ_ID_PORT_MDB:
|
|
err = dsa_port_mdb_del(dp, SWITCHDEV_OBJ_PORT_MDB(obj));
|
|
break;
|
|
case SWITCHDEV_OBJ_ID_PORT_VLAN:
|
|
err = dsa_port_vlan_del(dp, SWITCHDEV_OBJ_PORT_VLAN(obj));
|
|
break;
|
|
default:
|
|
err = -EOPNOTSUPP;
|
|
break;
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
static int dsa_slave_port_obj_dump(struct net_device *dev,
|
|
struct switchdev_obj *obj,
|
|
switchdev_obj_dump_cb_t *cb)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
struct dsa_port *dp = p->dp;
|
|
int err;
|
|
|
|
switch (obj->id) {
|
|
case SWITCHDEV_OBJ_ID_PORT_FDB:
|
|
err = dsa_port_fdb_dump(dp, SWITCHDEV_OBJ_PORT_FDB(obj), cb);
|
|
break;
|
|
case SWITCHDEV_OBJ_ID_PORT_MDB:
|
|
err = dsa_port_mdb_dump(dp, SWITCHDEV_OBJ_PORT_MDB(obj), cb);
|
|
break;
|
|
case SWITCHDEV_OBJ_ID_PORT_VLAN:
|
|
err = dsa_port_vlan_dump(dp, SWITCHDEV_OBJ_PORT_VLAN(obj), cb);
|
|
break;
|
|
default:
|
|
err = -EOPNOTSUPP;
|
|
break;
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
static int dsa_slave_port_attr_get(struct net_device *dev,
|
|
struct switchdev_attr *attr)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
struct dsa_switch *ds = p->dp->ds;
|
|
|
|
switch (attr->id) {
|
|
case SWITCHDEV_ATTR_ID_PORT_PARENT_ID:
|
|
attr->u.ppid.id_len = sizeof(ds->index);
|
|
memcpy(&attr->u.ppid.id, &ds->index, attr->u.ppid.id_len);
|
|
break;
|
|
default:
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static inline netdev_tx_t dsa_netpoll_send_skb(struct dsa_slave_priv *p,
|
|
struct sk_buff *skb)
|
|
{
|
|
#ifdef CONFIG_NET_POLL_CONTROLLER
|
|
if (p->netpoll)
|
|
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,
|
|
* in which case it must have freed it. Only free it here on error.
|
|
*/
|
|
nskb = p->xmit(skb, dev);
|
|
if (!nskb) {
|
|
kfree_skb(skb);
|
|
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->dp->ds->dst->master_netdev;
|
|
dev_queue_xmit(nskb);
|
|
|
|
return NETDEV_TX_OK;
|
|
}
|
|
|
|
/* ethtool operations *******************************************************/
|
|
static int
|
|
dsa_slave_get_link_ksettings(struct net_device *dev,
|
|
struct ethtool_link_ksettings *cmd)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
int err = -EOPNOTSUPP;
|
|
|
|
if (p->phy != NULL)
|
|
err = phy_ethtool_ksettings_get(p->phy, cmd);
|
|
|
|
return err;
|
|
}
|
|
|
|
static int
|
|
dsa_slave_set_link_ksettings(struct net_device *dev,
|
|
const struct ethtool_link_ksettings *cmd)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
|
|
if (p->phy != NULL)
|
|
return phy_ethtool_ksettings_set(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->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->dp->ds;
|
|
|
|
if (ds->ops->get_regs_len)
|
|
return ds->ops->get_regs_len(ds, p->dp->index);
|
|
|
|
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->dp->ds;
|
|
|
|
if (ds->ops->get_regs)
|
|
ds->ops->get_regs(ds, p->dp->index, 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->dp->ds;
|
|
|
|
if (ds->cd && ds->cd->eeprom_len)
|
|
return ds->cd->eeprom_len;
|
|
|
|
if (ds->ops->get_eeprom_len)
|
|
return ds->ops->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->dp->ds;
|
|
|
|
if (ds->ops->get_eeprom)
|
|
return ds->ops->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->dp->ds;
|
|
|
|
if (ds->ops->set_eeprom)
|
|
return ds->ops->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->dp->ds;
|
|
|
|
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->ops->get_strings)
|
|
ds->ops->get_strings(ds, p->dp->index, data + 4 * len);
|
|
}
|
|
}
|
|
|
|
static void dsa_cpu_port_get_ethtool_stats(struct net_device *dev,
|
|
struct ethtool_stats *stats,
|
|
uint64_t *data)
|
|
{
|
|
struct dsa_switch_tree *dst = dev->dsa_ptr;
|
|
struct dsa_switch *ds = dst->cpu_dp->ds;
|
|
s8 cpu_port = dst->cpu_dp->index;
|
|
int count = 0;
|
|
|
|
if (dst->master_ethtool_ops.get_sset_count) {
|
|
count = dst->master_ethtool_ops.get_sset_count(dev,
|
|
ETH_SS_STATS);
|
|
dst->master_ethtool_ops.get_ethtool_stats(dev, stats, data);
|
|
}
|
|
|
|
if (ds->ops->get_ethtool_stats)
|
|
ds->ops->get_ethtool_stats(ds, cpu_port, data + count);
|
|
}
|
|
|
|
static int dsa_cpu_port_get_sset_count(struct net_device *dev, int sset)
|
|
{
|
|
struct dsa_switch_tree *dst = dev->dsa_ptr;
|
|
struct dsa_switch *ds = dst->cpu_dp->ds;
|
|
int count = 0;
|
|
|
|
if (dst->master_ethtool_ops.get_sset_count)
|
|
count += dst->master_ethtool_ops.get_sset_count(dev, sset);
|
|
|
|
if (sset == ETH_SS_STATS && ds->ops->get_sset_count)
|
|
count += ds->ops->get_sset_count(ds);
|
|
|
|
return count;
|
|
}
|
|
|
|
static void dsa_cpu_port_get_strings(struct net_device *dev,
|
|
uint32_t stringset, uint8_t *data)
|
|
{
|
|
struct dsa_switch_tree *dst = dev->dsa_ptr;
|
|
struct dsa_switch *ds = dst->cpu_dp->ds;
|
|
s8 cpu_port = dst->cpu_dp->index;
|
|
int len = ETH_GSTRING_LEN;
|
|
int mcount = 0, count;
|
|
unsigned int i;
|
|
uint8_t pfx[4];
|
|
uint8_t *ndata;
|
|
|
|
snprintf(pfx, sizeof(pfx), "p%.2d", cpu_port);
|
|
/* We do not want to be NULL-terminated, since this is a prefix */
|
|
pfx[sizeof(pfx) - 1] = '_';
|
|
|
|
if (dst->master_ethtool_ops.get_sset_count) {
|
|
mcount = dst->master_ethtool_ops.get_sset_count(dev,
|
|
ETH_SS_STATS);
|
|
dst->master_ethtool_ops.get_strings(dev, stringset, data);
|
|
}
|
|
|
|
if (stringset == ETH_SS_STATS && ds->ops->get_strings) {
|
|
ndata = data + mcount * len;
|
|
/* This function copies ETH_GSTRINGS_LEN bytes, we will mangle
|
|
* the output after to prepend our CPU port prefix we
|
|
* constructed earlier
|
|
*/
|
|
ds->ops->get_strings(ds, cpu_port, ndata);
|
|
count = ds->ops->get_sset_count(ds);
|
|
for (i = 0; i < count; i++) {
|
|
memmove(ndata + (i * len + sizeof(pfx)),
|
|
ndata + i * len, len - sizeof(pfx));
|
|
memcpy(ndata + i * len, pfx, sizeof(pfx));
|
|
}
|
|
}
|
|
}
|
|
|
|
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->dp->ds;
|
|
|
|
data[0] = dev->stats.tx_packets;
|
|
data[1] = dev->stats.tx_bytes;
|
|
data[2] = dev->stats.rx_packets;
|
|
data[3] = dev->stats.rx_bytes;
|
|
if (ds->ops->get_ethtool_stats)
|
|
ds->ops->get_ethtool_stats(ds, p->dp->index, 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->dp->ds;
|
|
|
|
if (sset == ETH_SS_STATS) {
|
|
int count;
|
|
|
|
count = 4;
|
|
if (ds->ops->get_sset_count)
|
|
count += ds->ops->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->dp->ds;
|
|
|
|
if (ds->ops->get_wol)
|
|
ds->ops->get_wol(ds, p->dp->index, 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->dp->ds;
|
|
int ret = -EOPNOTSUPP;
|
|
|
|
if (ds->ops->set_wol)
|
|
ret = ds->ops->set_wol(ds, p->dp->index, 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->dp->ds;
|
|
int ret;
|
|
|
|
if (!ds->ops->set_eee)
|
|
return -EOPNOTSUPP;
|
|
|
|
ret = ds->ops->set_eee(ds, p->dp->index, 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->dp->ds;
|
|
int ret;
|
|
|
|
if (!ds->ops->get_eee)
|
|
return -EOPNOTSUPP;
|
|
|
|
ret = ds->ops->get_eee(ds, p->dp->index, 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->dp->ds;
|
|
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 int dsa_slave_get_phys_port_name(struct net_device *dev,
|
|
char *name, size_t len)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
|
|
if (snprintf(name, len, "p%d", p->dp->index) >= len)
|
|
return -EINVAL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct dsa_mall_tc_entry *
|
|
dsa_slave_mall_tc_entry_find(struct dsa_slave_priv *p,
|
|
unsigned long cookie)
|
|
{
|
|
struct dsa_mall_tc_entry *mall_tc_entry;
|
|
|
|
list_for_each_entry(mall_tc_entry, &p->mall_tc_list, list)
|
|
if (mall_tc_entry->cookie == cookie)
|
|
return mall_tc_entry;
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static int dsa_slave_add_cls_matchall(struct net_device *dev,
|
|
__be16 protocol,
|
|
struct tc_cls_matchall_offload *cls,
|
|
bool ingress)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
struct dsa_mall_tc_entry *mall_tc_entry;
|
|
struct dsa_switch *ds = p->dp->ds;
|
|
struct net *net = dev_net(dev);
|
|
struct dsa_slave_priv *to_p;
|
|
struct net_device *to_dev;
|
|
const struct tc_action *a;
|
|
int err = -EOPNOTSUPP;
|
|
LIST_HEAD(actions);
|
|
int ifindex;
|
|
|
|
if (!ds->ops->port_mirror_add)
|
|
return err;
|
|
|
|
if (!tc_single_action(cls->exts))
|
|
return err;
|
|
|
|
tcf_exts_to_list(cls->exts, &actions);
|
|
a = list_first_entry(&actions, struct tc_action, list);
|
|
|
|
if (is_tcf_mirred_egress_mirror(a) && protocol == htons(ETH_P_ALL)) {
|
|
struct dsa_mall_mirror_tc_entry *mirror;
|
|
|
|
ifindex = tcf_mirred_ifindex(a);
|
|
to_dev = __dev_get_by_index(net, ifindex);
|
|
if (!to_dev)
|
|
return -EINVAL;
|
|
|
|
if (!dsa_slave_dev_check(to_dev))
|
|
return -EOPNOTSUPP;
|
|
|
|
mall_tc_entry = kzalloc(sizeof(*mall_tc_entry), GFP_KERNEL);
|
|
if (!mall_tc_entry)
|
|
return -ENOMEM;
|
|
|
|
mall_tc_entry->cookie = cls->cookie;
|
|
mall_tc_entry->type = DSA_PORT_MALL_MIRROR;
|
|
mirror = &mall_tc_entry->mirror;
|
|
|
|
to_p = netdev_priv(to_dev);
|
|
|
|
mirror->to_local_port = to_p->dp->index;
|
|
mirror->ingress = ingress;
|
|
|
|
err = ds->ops->port_mirror_add(ds, p->dp->index, mirror,
|
|
ingress);
|
|
if (err) {
|
|
kfree(mall_tc_entry);
|
|
return err;
|
|
}
|
|
|
|
list_add_tail(&mall_tc_entry->list, &p->mall_tc_list);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void dsa_slave_del_cls_matchall(struct net_device *dev,
|
|
struct tc_cls_matchall_offload *cls)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
struct dsa_mall_tc_entry *mall_tc_entry;
|
|
struct dsa_switch *ds = p->dp->ds;
|
|
|
|
if (!ds->ops->port_mirror_del)
|
|
return;
|
|
|
|
mall_tc_entry = dsa_slave_mall_tc_entry_find(p, cls->cookie);
|
|
if (!mall_tc_entry)
|
|
return;
|
|
|
|
list_del(&mall_tc_entry->list);
|
|
|
|
switch (mall_tc_entry->type) {
|
|
case DSA_PORT_MALL_MIRROR:
|
|
ds->ops->port_mirror_del(ds, p->dp->index,
|
|
&mall_tc_entry->mirror);
|
|
break;
|
|
default:
|
|
WARN_ON(1);
|
|
}
|
|
|
|
kfree(mall_tc_entry);
|
|
}
|
|
|
|
static int dsa_slave_setup_tc(struct net_device *dev, u32 handle,
|
|
__be16 protocol, struct tc_to_netdev *tc)
|
|
{
|
|
bool ingress = TC_H_MAJ(handle) == TC_H_MAJ(TC_H_INGRESS);
|
|
int ret = -EOPNOTSUPP;
|
|
|
|
switch (tc->type) {
|
|
case TC_SETUP_MATCHALL:
|
|
switch (tc->cls_mall->command) {
|
|
case TC_CLSMATCHALL_REPLACE:
|
|
return dsa_slave_add_cls_matchall(dev, protocol,
|
|
tc->cls_mall,
|
|
ingress);
|
|
case TC_CLSMATCHALL_DESTROY:
|
|
dsa_slave_del_cls_matchall(dev, tc->cls_mall);
|
|
return 0;
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
void dsa_cpu_port_ethtool_init(struct ethtool_ops *ops)
|
|
{
|
|
ops->get_sset_count = dsa_cpu_port_get_sset_count;
|
|
ops->get_ethtool_stats = dsa_cpu_port_get_ethtool_stats;
|
|
ops->get_strings = dsa_cpu_port_get_strings;
|
|
}
|
|
|
|
static int dsa_slave_get_rxnfc(struct net_device *dev,
|
|
struct ethtool_rxnfc *nfc, u32 *rule_locs)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
struct dsa_switch *ds = p->dp->ds;
|
|
|
|
if (!ds->ops->get_rxnfc)
|
|
return -EOPNOTSUPP;
|
|
|
|
return ds->ops->get_rxnfc(ds, p->dp->index, nfc, rule_locs);
|
|
}
|
|
|
|
static int dsa_slave_set_rxnfc(struct net_device *dev,
|
|
struct ethtool_rxnfc *nfc)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
struct dsa_switch *ds = p->dp->ds;
|
|
|
|
if (!ds->ops->set_rxnfc)
|
|
return -EOPNOTSUPP;
|
|
|
|
return ds->ops->set_rxnfc(ds, p->dp->index, nfc);
|
|
}
|
|
|
|
static const struct ethtool_ops dsa_slave_ethtool_ops = {
|
|
.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,
|
|
.get_link_ksettings = dsa_slave_get_link_ksettings,
|
|
.set_link_ksettings = dsa_slave_set_link_ksettings,
|
|
.get_rxnfc = dsa_slave_get_rxnfc,
|
|
.set_rxnfc = dsa_slave_set_rxnfc,
|
|
};
|
|
|
|
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,
|
|
.ndo_get_phys_port_name = dsa_slave_get_phys_port_name,
|
|
.ndo_setup_tc = dsa_slave_setup_tc,
|
|
};
|
|
|
|
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->dp->ds;
|
|
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->ops->adjust_link && status_changed)
|
|
ds->ops->adjust_link(ds, p->dp->index, 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->dp->ds;
|
|
if (ds->ops->fixed_link_update)
|
|
ds->ops->fixed_link_update(ds, p->dp->index, 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->dp->ds;
|
|
|
|
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;
|
|
return phy_connect_direct(slave_dev, p->phy, dsa_slave_adjust_link,
|
|
p->phy_interface);
|
|
}
|
|
|
|
static int dsa_slave_phy_setup(struct dsa_slave_priv *p,
|
|
struct net_device *slave_dev)
|
|
{
|
|
struct dsa_switch *ds = p->dp->ds;
|
|
struct device_node *phy_dn, *port_dn;
|
|
bool phy_is_fixed = false;
|
|
u32 phy_flags = 0;
|
|
int mode, ret;
|
|
|
|
port_dn = p->dp->dn;
|
|
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 (!phy_dn && 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 = of_node_get(port_dn);
|
|
}
|
|
|
|
if (ds->ops->get_phy_flags)
|
|
phy_flags = ds->ops->get_phy_flags(ds, p->dp->index);
|
|
|
|
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);
|
|
of_node_put(phy_dn);
|
|
return ret;
|
|
}
|
|
} else {
|
|
p->phy = of_phy_connect(slave_dev, phy_dn,
|
|
dsa_slave_adjust_link,
|
|
phy_flags,
|
|
p->phy_interface);
|
|
}
|
|
|
|
of_node_put(phy_dn);
|
|
}
|
|
|
|
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->dp->index);
|
|
if (ret) {
|
|
netdev_err(slave_dev, "failed to connect to port %d: %d\n",
|
|
p->dp->index, ret);
|
|
if (phy_is_fixed)
|
|
of_phy_deregister_fixed_link(port_dn);
|
|
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);
|
|
|
|
netif_device_detach(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, const char *name)
|
|
{
|
|
struct dsa_switch_tree *dst = ds->dst;
|
|
struct net_device *master;
|
|
struct net_device *slave_dev;
|
|
struct dsa_slave_priv *p;
|
|
int ret;
|
|
|
|
master = ds->dst->master_netdev;
|
|
if (ds->master_netdev)
|
|
master = ds->master_netdev;
|
|
|
|
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 | NETIF_F_HW_TC;
|
|
slave_dev->hw_features |= NETIF_F_HW_TC;
|
|
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;
|
|
slave_dev->min_mtu = 0;
|
|
slave_dev->max_mtu = ETH_MAX_MTU;
|
|
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->ports[port].dn;
|
|
slave_dev->vlan_features = master->vlan_features;
|
|
|
|
p = netdev_priv(slave_dev);
|
|
p->dp = &ds->ports[port];
|
|
INIT_LIST_HEAD(&p->mall_tc_list);
|
|
p->xmit = dst->tag_ops->xmit;
|
|
|
|
p->old_pause = -1;
|
|
p->old_link = -1;
|
|
p->old_duplex = -1;
|
|
|
|
ds->ports[port].netdev = 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].netdev = 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);
|
|
struct device_node *port_dn;
|
|
|
|
port_dn = p->dp->dn;
|
|
|
|
netif_carrier_off(slave_dev);
|
|
if (p->phy) {
|
|
phy_disconnect(p->phy);
|
|
|
|
if (of_phy_is_fixed_link(port_dn))
|
|
of_phy_deregister_fixed_link(port_dn);
|
|
}
|
|
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_changeupper(struct net_device *dev,
|
|
struct netdev_notifier_changeupper_info *info)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
struct dsa_port *dp = p->dp;
|
|
int err = NOTIFY_DONE;
|
|
|
|
if (netif_is_bridge_master(info->upper_dev)) {
|
|
if (info->linking) {
|
|
err = dsa_port_bridge_join(dp, info->upper_dev);
|
|
err = notifier_from_errno(err);
|
|
} else {
|
|
dsa_port_bridge_leave(dp, info->upper_dev);
|
|
err = NOTIFY_OK;
|
|
}
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
static int dsa_slave_netdevice_event(struct notifier_block *nb,
|
|
unsigned long event, void *ptr)
|
|
{
|
|
struct net_device *dev = netdev_notifier_info_to_dev(ptr);
|
|
|
|
if (dev->netdev_ops != &dsa_slave_netdev_ops)
|
|
return NOTIFY_DONE;
|
|
|
|
if (event == NETDEV_CHANGEUPPER)
|
|
return dsa_slave_changeupper(dev, ptr);
|
|
|
|
return NOTIFY_DONE;
|
|
}
|
|
|
|
static struct notifier_block dsa_slave_nb __read_mostly = {
|
|
.notifier_call = dsa_slave_netdevice_event,
|
|
};
|
|
|
|
int dsa_slave_register_notifier(void)
|
|
{
|
|
return register_netdevice_notifier(&dsa_slave_nb);
|
|
}
|
|
|
|
void dsa_slave_unregister_notifier(void)
|
|
{
|
|
int err;
|
|
|
|
err = unregister_netdevice_notifier(&dsa_slave_nb);
|
|
if (err)
|
|
pr_err("DSA: failed to unregister slave notifier (%d)\n", err);
|
|
}
|