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slave.c
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/*
* 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 dsa_master_netdev(p)->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 = dsa_master_netdev(p);
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 = dsa_master_netdev(p);
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 = dsa_master_netdev(p);
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 = dsa_master_netdev(p);
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 = dsa_master_netdev(p);
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;
}
struct dsa_slave_dump_ctx {
struct net_device *dev;
struct sk_buff *skb;
struct netlink_callback *cb;
int idx;
};
static int
dsa_slave_port_fdb_do_dump(const unsigned char *addr, u16 vid,
bool is_static, void *data)
{
struct dsa_slave_dump_ctx *dump = data;
u32 portid = NETLINK_CB(dump->cb->skb).portid;
u32 seq = dump->cb->nlh->nlmsg_seq;
struct nlmsghdr *nlh;
struct ndmsg *ndm;
if (dump->idx < dump->cb->args[2])
goto skip;
nlh = nlmsg_put(dump->skb, portid, seq, RTM_NEWNEIGH,
sizeof(*ndm), NLM_F_MULTI);
if (!nlh)
return -EMSGSIZE;
ndm = nlmsg_data(nlh);
ndm->ndm_family = AF_BRIDGE;
ndm->ndm_pad1 = 0;
ndm->ndm_pad2 = 0;
ndm->ndm_flags = NTF_SELF;
ndm->ndm_type = 0;
ndm->ndm_ifindex = dump->dev->ifindex;
ndm->ndm_state = is_static ? NUD_NOARP : NUD_REACHABLE;
if (nla_put(dump->skb, NDA_LLADDR, ETH_ALEN, addr))
goto nla_put_failure;
if (vid && nla_put_u16(dump->skb, NDA_VLAN, vid))
goto nla_put_failure;
nlmsg_end(dump->skb, nlh);
skip:
dump->idx++;
return 0;
nla_put_failure:
nlmsg_cancel(dump->skb, nlh);
return -EMSGSIZE;
}
static int
dsa_slave_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb,
struct net_device *dev, struct net_device *filter_dev,
int *idx)
{
struct dsa_slave_dump_ctx dump = {
.dev = dev,
.skb = skb,
.cb = cb,
.idx = *idx,
};
struct dsa_slave_priv *p = netdev_priv(dev);
struct dsa_port *dp = p->dp;
struct dsa_switch *ds = dp->ds;
int err;
if (!ds->ops->port_fdb_dump)
return -EOPNOTSUPP;
err = ds->ops->port_fdb_dump(ds, dp->index,
dsa_slave_port_fdb_do_dump,
&dump);
*idx = dump.idx;
return err;
}
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_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_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_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;
case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS_SUPPORT:
attr->u.brport_flags_support = 0;
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 pcpu_sw_netstats *s;
struct sk_buff *nskb;
s = this_cpu_ptr(p->stats64);
u64_stats_update_begin(&s->syncp);
s->tx_packets++;
s->tx_bytes += skb->len;
u64_stats_update_end(&s->syncp);
/* 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 = dsa_master_netdev(p);
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);
if (!p->phy)
return -EOPNOTSUPP;
phy_ethtool_ksettings_get(p->phy, cmd);
return 0;
}
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_port *cpu_dp = dsa_get_cpu_port(dst);
struct dsa_switch *ds = cpu_dp->ds;
s8 cpu_port = cpu_dp->index;
int count = 0;
if (cpu_dp->ethtool_ops.get_sset_count) {
count = cpu_dp->ethtool_ops.get_sset_count(dev, ETH_SS_STATS);
cpu_dp->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_port *cpu_dp = dsa_get_cpu_port(dst);
struct dsa_switch *ds = cpu_dp->ds;
int count = 0;
if (cpu_dp->ethtool_ops.get_sset_count)
count += cpu_dp->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_port *cpu_dp = dsa_get_cpu_port(dst);
struct dsa_switch *ds = cpu_dp->ds;
s8 cpu_port = 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 (cpu_dp->ethtool_ops.get_sset_count) {
mcount = cpu_dp->ethtool_ops.get_sset_count(dev, ETH_SS_STATS);
cpu_dp->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;
struct pcpu_sw_netstats *s;
unsigned int start;
int i;
for_each_possible_cpu(i) {
u64 tx_packets, tx_bytes, rx_packets, rx_bytes;
s = per_cpu_ptr(p->stats64, i);
do {
start = u64_stats_fetch_begin_irq(&s->syncp);
tx_packets = s->tx_packets;
tx_bytes = s->tx_bytes;
rx_packets = s->rx_packets;
rx_bytes = s->rx_bytes;
} while (u64_stats_fetch_retry_irq(&s->syncp, start));
data[0] += tx_packets;
data[1] += tx_bytes;
data[2] += rx_packets;
data[3] += 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;
/* Port's PHY and MAC both need to be EEE capable */
if (!p->phy)
return -ENODEV;
if (!ds->ops->set_mac_eee)
return -EOPNOTSUPP;
ret = ds->ops->set_mac_eee(ds, p->dp->index, e);
if (ret)
return ret;
if (e->eee_enabled) {
ret = phy_init_eee(p->phy, 0);
if (ret)
return ret;
}
return phy_ethtool_set_eee(p->phy, e);
}
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;
/* Port's PHY and MAC both need to be EEE capable */
if (!p->phy)
return -ENODEV;
if (!ds->ops->get_mac_eee)
return -EOPNOTSUPP;
ret = ds->ops->get_mac_eee(ds, p->dp->index, e);
if (ret)
return ret;
return phy_ethtool_get_eee(p->phy, e);
}
#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 net_device *master = dsa_master_netdev(p);
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,
struct tc_cls_matchall_offload *cls,
bool ingress)
{
struct dsa_slave_priv *p = netdev_priv(dev);
struct dsa_mall_tc_entry *mall_tc_entry;
__be16 protocol = cls->common.protocol;
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 (!tcf_exts_has_one_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_cls_matchall(struct net_device *dev,
struct tc_cls_matchall_offload *cls)
{
bool ingress;
if (is_classid_clsact_ingress(cls->common.classid))
ingress = true;
else if (is_classid_clsact_egress(cls->common.classid))
ingress = false;
else
return -EOPNOTSUPP;
if (cls->common.chain_index)
return -EOPNOTSUPP;
switch (cls->command) {
case TC_CLSMATCHALL_REPLACE:
return dsa_slave_add_cls_matchall(dev, cls, ingress);
case TC_CLSMATCHALL_DESTROY:
dsa_slave_del_cls_matchall(dev, cls);
return 0;
default:
return -EOPNOTSUPP;
}
}
static int dsa_slave_setup_tc(struct net_device *dev, enum tc_setup_type type,
void *type_data)
{
switch (type) {
case TC_SETUP_CLSMATCHALL:
return dsa_slave_setup_tc_cls_matchall(dev, type_data);
default:
return -EOPNOTSUPP;
}
}
static void dsa_slave_get_stats64(struct net_device *dev,
struct rtnl_link_stats64 *stats)
{
struct dsa_slave_priv *p = netdev_priv(dev);
struct pcpu_sw_netstats *s;
unsigned int start;
int i;
netdev_stats_to_stats64(stats, &dev->stats);
for_each_possible_cpu(i) {
u64 tx_packets, tx_bytes, rx_packets, rx_bytes;
s = per_cpu_ptr(p->stats64, i);
do {
start = u64_stats_fetch_begin_irq(&s->syncp);
tx_packets = s->tx_packets;
tx_bytes = s->tx_bytes;
rx_packets = s->rx_packets;
rx_bytes = s->rx_bytes;
} while (u64_stats_fetch_retry_irq(&s->syncp, start));
stats->tx_packets += tx_packets;
stats->tx_bytes += tx_bytes;
stats->rx_packets += rx_packets;
stats->rx_bytes += rx_bytes;
}
}
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)
{