linuxdebug/drivers/net/ethernet/mscc/ocelot_net.c

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2024-07-16 15:50:57 +02:00
// SPDX-License-Identifier: (GPL-2.0 OR MIT)
/* Microsemi Ocelot Switch driver
*
* This contains glue logic between the switchdev driver operations and the
* mscc_ocelot_switch_lib.
*
* Copyright (c) 2017, 2019 Microsemi Corporation
* Copyright 2020-2021 NXP
*/
#include <linux/dsa/ocelot.h>
#include <linux/if_bridge.h>
#include <linux/of_net.h>
#include <linux/phy/phy.h>
#include <net/pkt_cls.h>
#include "ocelot.h"
#include "ocelot_police.h"
#include "ocelot_vcap.h"
#include "ocelot_fdma.h"
#define OCELOT_MAC_QUIRKS OCELOT_QUIRK_QSGMII_PORTS_MUST_BE_UP
struct ocelot_dump_ctx {
struct net_device *dev;
struct sk_buff *skb;
struct netlink_callback *cb;
int idx;
};
static bool ocelot_netdevice_dev_check(const struct net_device *dev);
static struct ocelot *devlink_port_to_ocelot(struct devlink_port *dlp)
{
return devlink_priv(dlp->devlink);
}
static int devlink_port_to_port(struct devlink_port *dlp)
{
struct ocelot *ocelot = devlink_port_to_ocelot(dlp);
return dlp - ocelot->devlink_ports;
}
static int ocelot_devlink_sb_pool_get(struct devlink *dl,
unsigned int sb_index, u16 pool_index,
struct devlink_sb_pool_info *pool_info)
{
struct ocelot *ocelot = devlink_priv(dl);
return ocelot_sb_pool_get(ocelot, sb_index, pool_index, pool_info);
}
static int ocelot_devlink_sb_pool_set(struct devlink *dl, unsigned int sb_index,
u16 pool_index, u32 size,
enum devlink_sb_threshold_type threshold_type,
struct netlink_ext_ack *extack)
{
struct ocelot *ocelot = devlink_priv(dl);
return ocelot_sb_pool_set(ocelot, sb_index, pool_index, size,
threshold_type, extack);
}
static int ocelot_devlink_sb_port_pool_get(struct devlink_port *dlp,
unsigned int sb_index, u16 pool_index,
u32 *p_threshold)
{
struct ocelot *ocelot = devlink_port_to_ocelot(dlp);
int port = devlink_port_to_port(dlp);
return ocelot_sb_port_pool_get(ocelot, port, sb_index, pool_index,
p_threshold);
}
static int ocelot_devlink_sb_port_pool_set(struct devlink_port *dlp,
unsigned int sb_index, u16 pool_index,
u32 threshold,
struct netlink_ext_ack *extack)
{
struct ocelot *ocelot = devlink_port_to_ocelot(dlp);
int port = devlink_port_to_port(dlp);
return ocelot_sb_port_pool_set(ocelot, port, sb_index, pool_index,
threshold, extack);
}
static int
ocelot_devlink_sb_tc_pool_bind_get(struct devlink_port *dlp,
unsigned int sb_index, u16 tc_index,
enum devlink_sb_pool_type pool_type,
u16 *p_pool_index, u32 *p_threshold)
{
struct ocelot *ocelot = devlink_port_to_ocelot(dlp);
int port = devlink_port_to_port(dlp);
return ocelot_sb_tc_pool_bind_get(ocelot, port, sb_index, tc_index,
pool_type, p_pool_index,
p_threshold);
}
static int
ocelot_devlink_sb_tc_pool_bind_set(struct devlink_port *dlp,
unsigned int sb_index, u16 tc_index,
enum devlink_sb_pool_type pool_type,
u16 pool_index, u32 threshold,
struct netlink_ext_ack *extack)
{
struct ocelot *ocelot = devlink_port_to_ocelot(dlp);
int port = devlink_port_to_port(dlp);
return ocelot_sb_tc_pool_bind_set(ocelot, port, sb_index, tc_index,
pool_type, pool_index, threshold,
extack);
}
static int ocelot_devlink_sb_occ_snapshot(struct devlink *dl,
unsigned int sb_index)
{
struct ocelot *ocelot = devlink_priv(dl);
return ocelot_sb_occ_snapshot(ocelot, sb_index);
}
static int ocelot_devlink_sb_occ_max_clear(struct devlink *dl,
unsigned int sb_index)
{
struct ocelot *ocelot = devlink_priv(dl);
return ocelot_sb_occ_max_clear(ocelot, sb_index);
}
static int ocelot_devlink_sb_occ_port_pool_get(struct devlink_port *dlp,
unsigned int sb_index,
u16 pool_index, u32 *p_cur,
u32 *p_max)
{
struct ocelot *ocelot = devlink_port_to_ocelot(dlp);
int port = devlink_port_to_port(dlp);
return ocelot_sb_occ_port_pool_get(ocelot, port, sb_index, pool_index,
p_cur, p_max);
}
static int
ocelot_devlink_sb_occ_tc_port_bind_get(struct devlink_port *dlp,
unsigned int sb_index, u16 tc_index,
enum devlink_sb_pool_type pool_type,
u32 *p_cur, u32 *p_max)
{
struct ocelot *ocelot = devlink_port_to_ocelot(dlp);
int port = devlink_port_to_port(dlp);
return ocelot_sb_occ_tc_port_bind_get(ocelot, port, sb_index,
tc_index, pool_type,
p_cur, p_max);
}
const struct devlink_ops ocelot_devlink_ops = {
.sb_pool_get = ocelot_devlink_sb_pool_get,
.sb_pool_set = ocelot_devlink_sb_pool_set,
.sb_port_pool_get = ocelot_devlink_sb_port_pool_get,
.sb_port_pool_set = ocelot_devlink_sb_port_pool_set,
.sb_tc_pool_bind_get = ocelot_devlink_sb_tc_pool_bind_get,
.sb_tc_pool_bind_set = ocelot_devlink_sb_tc_pool_bind_set,
.sb_occ_snapshot = ocelot_devlink_sb_occ_snapshot,
.sb_occ_max_clear = ocelot_devlink_sb_occ_max_clear,
.sb_occ_port_pool_get = ocelot_devlink_sb_occ_port_pool_get,
.sb_occ_tc_port_bind_get = ocelot_devlink_sb_occ_tc_port_bind_get,
};
int ocelot_port_devlink_init(struct ocelot *ocelot, int port,
enum devlink_port_flavour flavour)
{
struct devlink_port *dlp = &ocelot->devlink_ports[port];
int id_len = sizeof(ocelot->base_mac);
struct devlink *dl = ocelot->devlink;
struct devlink_port_attrs attrs = {};
memset(dlp, 0, sizeof(*dlp));
memcpy(attrs.switch_id.id, &ocelot->base_mac, id_len);
attrs.switch_id.id_len = id_len;
attrs.phys.port_number = port;
attrs.flavour = flavour;
devlink_port_attrs_set(dlp, &attrs);
return devlink_port_register(dl, dlp, port);
}
void ocelot_port_devlink_teardown(struct ocelot *ocelot, int port)
{
struct devlink_port *dlp = &ocelot->devlink_ports[port];
devlink_port_unregister(dlp);
}
static struct devlink_port *ocelot_get_devlink_port(struct net_device *dev)
{
struct ocelot_port_private *priv = netdev_priv(dev);
struct ocelot *ocelot = priv->port.ocelot;
int port = priv->port.index;
return &ocelot->devlink_ports[port];
}
int ocelot_setup_tc_cls_flower(struct ocelot_port_private *priv,
struct flow_cls_offload *f,
bool ingress)
{
struct ocelot *ocelot = priv->port.ocelot;
int port = priv->port.index;
if (!ingress)
return -EOPNOTSUPP;
switch (f->command) {
case FLOW_CLS_REPLACE:
return ocelot_cls_flower_replace(ocelot, port, f, ingress);
case FLOW_CLS_DESTROY:
return ocelot_cls_flower_destroy(ocelot, port, f, ingress);
case FLOW_CLS_STATS:
return ocelot_cls_flower_stats(ocelot, port, f, ingress);
default:
return -EOPNOTSUPP;
}
}
static int ocelot_setup_tc_cls_matchall_police(struct ocelot_port_private *priv,
struct tc_cls_matchall_offload *f,
bool ingress,
struct netlink_ext_ack *extack)
{
struct flow_action_entry *action = &f->rule->action.entries[0];
struct ocelot *ocelot = priv->port.ocelot;
struct ocelot_policer pol = { 0 };
int port = priv->port.index;
int err;
if (!ingress) {
NL_SET_ERR_MSG_MOD(extack, "Only ingress is supported");
return -EOPNOTSUPP;
}
if (priv->tc.police_id && priv->tc.police_id != f->cookie) {
NL_SET_ERR_MSG_MOD(extack,
"Only one policer per port is supported");
return -EEXIST;
}
err = ocelot_policer_validate(&f->rule->action, action, extack);
if (err)
return err;
pol.rate = (u32)div_u64(action->police.rate_bytes_ps, 1000) * 8;
pol.burst = action->police.burst;
err = ocelot_port_policer_add(ocelot, port, &pol);
if (err) {
NL_SET_ERR_MSG_MOD(extack, "Could not add policer");
return err;
}
priv->tc.police_id = f->cookie;
priv->tc.offload_cnt++;
return 0;
}
static int ocelot_setup_tc_cls_matchall_mirred(struct ocelot_port_private *priv,
struct tc_cls_matchall_offload *f,
bool ingress,
struct netlink_ext_ack *extack)
{
struct flow_action *action = &f->rule->action;
struct ocelot *ocelot = priv->port.ocelot;
struct ocelot_port_private *other_priv;
const struct flow_action_entry *a;
int err;
if (f->common.protocol != htons(ETH_P_ALL))
return -EOPNOTSUPP;
if (!flow_action_basic_hw_stats_check(action, extack))
return -EOPNOTSUPP;
a = &action->entries[0];
if (!a->dev)
return -EINVAL;
if (!ocelot_netdevice_dev_check(a->dev)) {
NL_SET_ERR_MSG_MOD(extack,
"Destination not an ocelot port");
return -EOPNOTSUPP;
}
other_priv = netdev_priv(a->dev);
err = ocelot_port_mirror_add(ocelot, priv->port.index,
other_priv->port.index, ingress, extack);
if (err)
return err;
if (ingress)
priv->tc.ingress_mirred_id = f->cookie;
else
priv->tc.egress_mirred_id = f->cookie;
priv->tc.offload_cnt++;
return 0;
}
static int ocelot_del_tc_cls_matchall_police(struct ocelot_port_private *priv,
struct netlink_ext_ack *extack)
{
struct ocelot *ocelot = priv->port.ocelot;
int port = priv->port.index;
int err;
err = ocelot_port_policer_del(ocelot, port);
if (err) {
NL_SET_ERR_MSG_MOD(extack,
"Could not delete policer");
return err;
}
priv->tc.police_id = 0;
priv->tc.offload_cnt--;
return 0;
}
static int ocelot_del_tc_cls_matchall_mirred(struct ocelot_port_private *priv,
bool ingress,
struct netlink_ext_ack *extack)
{
struct ocelot *ocelot = priv->port.ocelot;
int port = priv->port.index;
ocelot_port_mirror_del(ocelot, port, ingress);
if (ingress)
priv->tc.ingress_mirred_id = 0;
else
priv->tc.egress_mirred_id = 0;
priv->tc.offload_cnt--;
return 0;
}
static int ocelot_setup_tc_cls_matchall(struct ocelot_port_private *priv,
struct tc_cls_matchall_offload *f,
bool ingress)
{
struct netlink_ext_ack *extack = f->common.extack;
struct flow_action_entry *action;
switch (f->command) {
case TC_CLSMATCHALL_REPLACE:
if (!flow_offload_has_one_action(&f->rule->action)) {
NL_SET_ERR_MSG_MOD(extack,
"Only one action is supported");
return -EOPNOTSUPP;
}
if (priv->tc.block_shared) {
NL_SET_ERR_MSG_MOD(extack,
"Matchall offloads not supported on shared blocks");
return -EOPNOTSUPP;
}
action = &f->rule->action.entries[0];
switch (action->id) {
case FLOW_ACTION_POLICE:
return ocelot_setup_tc_cls_matchall_police(priv, f,
ingress,
extack);
break;
case FLOW_ACTION_MIRRED:
return ocelot_setup_tc_cls_matchall_mirred(priv, f,
ingress,
extack);
default:
NL_SET_ERR_MSG_MOD(extack, "Unsupported action");
return -EOPNOTSUPP;
}
break;
case TC_CLSMATCHALL_DESTROY:
action = &f->rule->action.entries[0];
if (f->cookie == priv->tc.police_id)
return ocelot_del_tc_cls_matchall_police(priv, extack);
else if (f->cookie == priv->tc.ingress_mirred_id ||
f->cookie == priv->tc.egress_mirred_id)
return ocelot_del_tc_cls_matchall_mirred(priv, ingress,
extack);
else
return -ENOENT;
break;
case TC_CLSMATCHALL_STATS:
default:
return -EOPNOTSUPP;
}
}
static int ocelot_setup_tc_block_cb(enum tc_setup_type type,
void *type_data,
void *cb_priv, bool ingress)
{
struct ocelot_port_private *priv = cb_priv;
if (!tc_cls_can_offload_and_chain0(priv->dev, type_data))
return -EOPNOTSUPP;
switch (type) {
case TC_SETUP_CLSMATCHALL:
return ocelot_setup_tc_cls_matchall(priv, type_data, ingress);
case TC_SETUP_CLSFLOWER:
return ocelot_setup_tc_cls_flower(priv, type_data, ingress);
default:
return -EOPNOTSUPP;
}
}
static int ocelot_setup_tc_block_cb_ig(enum tc_setup_type type,
void *type_data,
void *cb_priv)
{
return ocelot_setup_tc_block_cb(type, type_data,
cb_priv, true);
}
static int ocelot_setup_tc_block_cb_eg(enum tc_setup_type type,
void *type_data,
void *cb_priv)
{
return ocelot_setup_tc_block_cb(type, type_data,
cb_priv, false);
}
static LIST_HEAD(ocelot_block_cb_list);
static int ocelot_setup_tc_block(struct ocelot_port_private *priv,
struct flow_block_offload *f)
{
struct flow_block_cb *block_cb;
flow_setup_cb_t *cb;
if (f->binder_type == FLOW_BLOCK_BINDER_TYPE_CLSACT_INGRESS) {
cb = ocelot_setup_tc_block_cb_ig;
priv->tc.block_shared = f->block_shared;
} else if (f->binder_type == FLOW_BLOCK_BINDER_TYPE_CLSACT_EGRESS) {
cb = ocelot_setup_tc_block_cb_eg;
} else {
return -EOPNOTSUPP;
}
f->driver_block_list = &ocelot_block_cb_list;
switch (f->command) {
case FLOW_BLOCK_BIND:
if (flow_block_cb_is_busy(cb, priv, &ocelot_block_cb_list))
return -EBUSY;
block_cb = flow_block_cb_alloc(cb, priv, priv, NULL);
if (IS_ERR(block_cb))
return PTR_ERR(block_cb);
flow_block_cb_add(block_cb, f);
list_add_tail(&block_cb->driver_list, f->driver_block_list);
return 0;
case FLOW_BLOCK_UNBIND:
block_cb = flow_block_cb_lookup(f->block, cb, priv);
if (!block_cb)
return -ENOENT;
flow_block_cb_remove(block_cb, f);
list_del(&block_cb->driver_list);
return 0;
default:
return -EOPNOTSUPP;
}
}
static int ocelot_setup_tc(struct net_device *dev, enum tc_setup_type type,
void *type_data)
{
struct ocelot_port_private *priv = netdev_priv(dev);
switch (type) {
case TC_SETUP_BLOCK:
return ocelot_setup_tc_block(priv, type_data);
default:
return -EOPNOTSUPP;
}
return 0;
}
static int ocelot_vlan_vid_add(struct net_device *dev, u16 vid, bool pvid,
bool untagged)
{
struct ocelot_port_private *priv = netdev_priv(dev);
struct ocelot_port *ocelot_port = &priv->port;
struct ocelot *ocelot = ocelot_port->ocelot;
int port = priv->port.index;
int ret;
ret = ocelot_vlan_add(ocelot, port, vid, pvid, untagged);
if (ret)
return ret;
/* Add the port MAC address to with the right VLAN information */
ocelot_mact_learn(ocelot, PGID_CPU, dev->dev_addr, vid,
ENTRYTYPE_LOCKED);
return 0;
}
static int ocelot_vlan_vid_del(struct net_device *dev, u16 vid)
{
struct ocelot_port_private *priv = netdev_priv(dev);
struct ocelot *ocelot = priv->port.ocelot;
int port = priv->port.index;
int ret;
/* 8021q removes VID 0 on module unload for all interfaces
* with VLAN filtering feature. We need to keep it to receive
* untagged traffic.
*/
if (vid == OCELOT_STANDALONE_PVID)
return 0;
ret = ocelot_vlan_del(ocelot, port, vid);
if (ret)
return ret;
/* Del the port MAC address to with the right VLAN information */
ocelot_mact_forget(ocelot, dev->dev_addr, vid);
return 0;
}
static int ocelot_port_open(struct net_device *dev)
{
struct ocelot_port_private *priv = netdev_priv(dev);
phylink_start(priv->phylink);
return 0;
}
static int ocelot_port_stop(struct net_device *dev)
{
struct ocelot_port_private *priv = netdev_priv(dev);
phylink_stop(priv->phylink);
return 0;
}
static netdev_tx_t ocelot_port_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct ocelot_port_private *priv = netdev_priv(dev);
struct ocelot_port *ocelot_port = &priv->port;
struct ocelot *ocelot = ocelot_port->ocelot;
int port = priv->port.index;
u32 rew_op = 0;
if (!static_branch_unlikely(&ocelot_fdma_enabled) &&
!ocelot_can_inject(ocelot, 0))
return NETDEV_TX_BUSY;
/* Check if timestamping is needed */
if (ocelot->ptp && (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP)) {
struct sk_buff *clone = NULL;
if (ocelot_port_txtstamp_request(ocelot, port, skb, &clone)) {
kfree_skb(skb);
return NETDEV_TX_OK;
}
if (clone)
OCELOT_SKB_CB(skb)->clone = clone;
rew_op = ocelot_ptp_rew_op(skb);
}
if (static_branch_unlikely(&ocelot_fdma_enabled)) {
ocelot_fdma_inject_frame(ocelot, port, rew_op, skb, dev);
} else {
ocelot_port_inject_frame(ocelot, port, 0, rew_op, skb);
consume_skb(skb);
}
return NETDEV_TX_OK;
}
enum ocelot_action_type {
OCELOT_MACT_LEARN,
OCELOT_MACT_FORGET,
};
struct ocelot_mact_work_ctx {
struct work_struct work;
struct ocelot *ocelot;
enum ocelot_action_type type;
union {
/* OCELOT_MACT_LEARN */
struct {
unsigned char addr[ETH_ALEN];
u16 vid;
enum macaccess_entry_type entry_type;
int pgid;
} learn;
/* OCELOT_MACT_FORGET */
struct {
unsigned char addr[ETH_ALEN];
u16 vid;
} forget;
};
};
#define ocelot_work_to_ctx(x) \
container_of((x), struct ocelot_mact_work_ctx, work)
static void ocelot_mact_work(struct work_struct *work)
{
struct ocelot_mact_work_ctx *w = ocelot_work_to_ctx(work);
struct ocelot *ocelot = w->ocelot;
switch (w->type) {
case OCELOT_MACT_LEARN:
ocelot_mact_learn(ocelot, w->learn.pgid, w->learn.addr,
w->learn.vid, w->learn.entry_type);
break;
case OCELOT_MACT_FORGET:
ocelot_mact_forget(ocelot, w->forget.addr, w->forget.vid);
break;
default:
break;
}
kfree(w);
}
static int ocelot_enqueue_mact_action(struct ocelot *ocelot,
const struct ocelot_mact_work_ctx *ctx)
{
struct ocelot_mact_work_ctx *w = kmemdup(ctx, sizeof(*w), GFP_ATOMIC);
if (!w)
return -ENOMEM;
w->ocelot = ocelot;
INIT_WORK(&w->work, ocelot_mact_work);
queue_work(ocelot->owq, &w->work);
return 0;
}
static int ocelot_mc_unsync(struct net_device *dev, const unsigned char *addr)
{
struct ocelot_port_private *priv = netdev_priv(dev);
struct ocelot_port *ocelot_port = &priv->port;
struct ocelot *ocelot = ocelot_port->ocelot;
struct ocelot_mact_work_ctx w;
ether_addr_copy(w.forget.addr, addr);
w.forget.vid = OCELOT_STANDALONE_PVID;
w.type = OCELOT_MACT_FORGET;
return ocelot_enqueue_mact_action(ocelot, &w);
}
static int ocelot_mc_sync(struct net_device *dev, const unsigned char *addr)
{
struct ocelot_port_private *priv = netdev_priv(dev);
struct ocelot_port *ocelot_port = &priv->port;
struct ocelot *ocelot = ocelot_port->ocelot;
struct ocelot_mact_work_ctx w;
ether_addr_copy(w.learn.addr, addr);
w.learn.vid = OCELOT_STANDALONE_PVID;
w.learn.pgid = PGID_CPU;
w.learn.entry_type = ENTRYTYPE_LOCKED;
w.type = OCELOT_MACT_LEARN;
return ocelot_enqueue_mact_action(ocelot, &w);
}
static void ocelot_set_rx_mode(struct net_device *dev)
{
struct ocelot_port_private *priv = netdev_priv(dev);
struct ocelot *ocelot = priv->port.ocelot;
u32 val;
int i;
/* This doesn't handle promiscuous mode because the bridge core is
* setting IFF_PROMISC on all slave interfaces and all frames would be
* forwarded to the CPU port.
*/
val = GENMASK(ocelot->num_phys_ports - 1, 0);
for_each_nonreserved_multicast_dest_pgid(ocelot, i)
ocelot_write_rix(ocelot, val, ANA_PGID_PGID, i);
__dev_mc_sync(dev, ocelot_mc_sync, ocelot_mc_unsync);
}
static int ocelot_port_set_mac_address(struct net_device *dev, void *p)
{
struct ocelot_port_private *priv = netdev_priv(dev);
struct ocelot_port *ocelot_port = &priv->port;
struct ocelot *ocelot = ocelot_port->ocelot;
const struct sockaddr *addr = p;
/* Learn the new net device MAC address in the mac table. */
ocelot_mact_learn(ocelot, PGID_CPU, addr->sa_data,
OCELOT_STANDALONE_PVID, ENTRYTYPE_LOCKED);
/* Then forget the previous one. */
ocelot_mact_forget(ocelot, dev->dev_addr, OCELOT_STANDALONE_PVID);
eth_hw_addr_set(dev, addr->sa_data);
return 0;
}
static void ocelot_get_stats64(struct net_device *dev,
struct rtnl_link_stats64 *stats)
{
struct ocelot_port_private *priv = netdev_priv(dev);
struct ocelot *ocelot = priv->port.ocelot;
int port = priv->port.index;
return ocelot_port_get_stats64(ocelot, port, stats);
}
static int ocelot_port_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
struct net_device *dev,
const unsigned char *addr,
u16 vid, u16 flags,
struct netlink_ext_ack *extack)
{
struct ocelot_port_private *priv = netdev_priv(dev);
struct ocelot_port *ocelot_port = &priv->port;
struct ocelot *ocelot = ocelot_port->ocelot;
int port = priv->port.index;
return ocelot_fdb_add(ocelot, port, addr, vid, ocelot_port->bridge);
}
static int ocelot_port_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
struct net_device *dev,
const unsigned char *addr, u16 vid,
struct netlink_ext_ack *extack)
{
struct ocelot_port_private *priv = netdev_priv(dev);
struct ocelot_port *ocelot_port = &priv->port;
struct ocelot *ocelot = ocelot_port->ocelot;
int port = priv->port.index;
return ocelot_fdb_del(ocelot, port, addr, vid, ocelot_port->bridge);
}
static int ocelot_port_fdb_do_dump(const unsigned char *addr, u16 vid,
bool is_static, void *data)
{
struct ocelot_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 ocelot_port_fdb_dump(struct sk_buff *skb,
struct netlink_callback *cb,
struct net_device *dev,
struct net_device *filter_dev, int *idx)
{
struct ocelot_port_private *priv = netdev_priv(dev);
struct ocelot *ocelot = priv->port.ocelot;
struct ocelot_dump_ctx dump = {
.dev = dev,
.skb = skb,
.cb = cb,
.idx = *idx,
};
int port = priv->port.index;
int ret;
ret = ocelot_fdb_dump(ocelot, port, ocelot_port_fdb_do_dump, &dump);
*idx = dump.idx;
return ret;
}
static int ocelot_vlan_rx_add_vid(struct net_device *dev, __be16 proto,
u16 vid)
{
return ocelot_vlan_vid_add(dev, vid, false, false);
}
static int ocelot_vlan_rx_kill_vid(struct net_device *dev, __be16 proto,
u16 vid)
{
return ocelot_vlan_vid_del(dev, vid);
}
static void ocelot_vlan_mode(struct ocelot *ocelot, int port,
netdev_features_t features)
{
u32 val;
/* Filtering */
val = ocelot_read(ocelot, ANA_VLANMASK);
if (features & NETIF_F_HW_VLAN_CTAG_FILTER)
val |= BIT(port);
else
val &= ~BIT(port);
ocelot_write(ocelot, val, ANA_VLANMASK);
}
static int ocelot_set_features(struct net_device *dev,
netdev_features_t features)
{
netdev_features_t changed = dev->features ^ features;
struct ocelot_port_private *priv = netdev_priv(dev);
struct ocelot *ocelot = priv->port.ocelot;
int port = priv->port.index;
if ((dev->features & NETIF_F_HW_TC) > (features & NETIF_F_HW_TC) &&
priv->tc.offload_cnt) {
netdev_err(dev,
"Cannot disable HW TC offload while offloads active\n");
return -EBUSY;
}
if (changed & NETIF_F_HW_VLAN_CTAG_FILTER)
ocelot_vlan_mode(ocelot, port, features);
return 0;
}
static int ocelot_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
{
struct ocelot_port_private *priv = netdev_priv(dev);
struct ocelot *ocelot = priv->port.ocelot;
int port = priv->port.index;
/* If the attached PHY device isn't capable of timestamping operations,
* use our own (when possible).
*/
if (!phy_has_hwtstamp(dev->phydev) && ocelot->ptp) {
switch (cmd) {
case SIOCSHWTSTAMP:
return ocelot_hwstamp_set(ocelot, port, ifr);
case SIOCGHWTSTAMP:
return ocelot_hwstamp_get(ocelot, port, ifr);
}
}
return phy_mii_ioctl(dev->phydev, ifr, cmd);
}
static int ocelot_change_mtu(struct net_device *dev, int new_mtu)
{
struct ocelot_port_private *priv = netdev_priv(dev);
struct ocelot_port *ocelot_port = &priv->port;
struct ocelot *ocelot = ocelot_port->ocelot;
ocelot_port_set_maxlen(ocelot, priv->port.index, new_mtu);
WRITE_ONCE(dev->mtu, new_mtu);
return 0;
}
static const struct net_device_ops ocelot_port_netdev_ops = {
.ndo_open = ocelot_port_open,
.ndo_stop = ocelot_port_stop,
.ndo_start_xmit = ocelot_port_xmit,
.ndo_change_mtu = ocelot_change_mtu,
.ndo_set_rx_mode = ocelot_set_rx_mode,
.ndo_set_mac_address = ocelot_port_set_mac_address,
.ndo_get_stats64 = ocelot_get_stats64,
.ndo_fdb_add = ocelot_port_fdb_add,
.ndo_fdb_del = ocelot_port_fdb_del,
.ndo_fdb_dump = ocelot_port_fdb_dump,
.ndo_vlan_rx_add_vid = ocelot_vlan_rx_add_vid,
.ndo_vlan_rx_kill_vid = ocelot_vlan_rx_kill_vid,
.ndo_set_features = ocelot_set_features,
.ndo_setup_tc = ocelot_setup_tc,
.ndo_eth_ioctl = ocelot_ioctl,
.ndo_get_devlink_port = ocelot_get_devlink_port,
};
struct net_device *ocelot_port_to_netdev(struct ocelot *ocelot, int port)
{
struct ocelot_port *ocelot_port = ocelot->ports[port];
struct ocelot_port_private *priv;
if (!ocelot_port)
return NULL;
priv = container_of(ocelot_port, struct ocelot_port_private, port);
return priv->dev;
}
/* Checks if the net_device instance given to us originates from our driver */
static bool ocelot_netdevice_dev_check(const struct net_device *dev)
{
return dev->netdev_ops == &ocelot_port_netdev_ops;
}
int ocelot_netdev_to_port(struct net_device *dev)
{
struct ocelot_port_private *priv;
if (!dev || !ocelot_netdevice_dev_check(dev))
return -EINVAL;
priv = netdev_priv(dev);
return priv->port.index;
}
static void ocelot_port_get_strings(struct net_device *netdev, u32 sset,
u8 *data)
{
struct ocelot_port_private *priv = netdev_priv(netdev);
struct ocelot *ocelot = priv->port.ocelot;
int port = priv->port.index;
ocelot_get_strings(ocelot, port, sset, data);
}
static void ocelot_port_get_ethtool_stats(struct net_device *dev,
struct ethtool_stats *stats,
u64 *data)
{
struct ocelot_port_private *priv = netdev_priv(dev);
struct ocelot *ocelot = priv->port.ocelot;
int port = priv->port.index;
ocelot_get_ethtool_stats(ocelot, port, data);
}
static int ocelot_port_get_sset_count(struct net_device *dev, int sset)
{
struct ocelot_port_private *priv = netdev_priv(dev);
struct ocelot *ocelot = priv->port.ocelot;
int port = priv->port.index;
return ocelot_get_sset_count(ocelot, port, sset);
}
static int ocelot_port_get_ts_info(struct net_device *dev,
struct ethtool_ts_info *info)
{
struct ocelot_port_private *priv = netdev_priv(dev);
struct ocelot *ocelot = priv->port.ocelot;
int port = priv->port.index;
if (!ocelot->ptp)
return ethtool_op_get_ts_info(dev, info);
return ocelot_get_ts_info(ocelot, port, info);
}
static const struct ethtool_ops ocelot_ethtool_ops = {
.get_strings = ocelot_port_get_strings,
.get_ethtool_stats = ocelot_port_get_ethtool_stats,
.get_sset_count = ocelot_port_get_sset_count,
.get_link_ksettings = phy_ethtool_get_link_ksettings,
.set_link_ksettings = phy_ethtool_set_link_ksettings,
.get_ts_info = ocelot_port_get_ts_info,
};
static void ocelot_port_attr_stp_state_set(struct ocelot *ocelot, int port,
u8 state)
{
ocelot_bridge_stp_state_set(ocelot, port, state);
}
static void ocelot_port_attr_ageing_set(struct ocelot *ocelot, int port,
unsigned long ageing_clock_t)
{
unsigned long ageing_jiffies = clock_t_to_jiffies(ageing_clock_t);
u32 ageing_time = jiffies_to_msecs(ageing_jiffies);
ocelot_set_ageing_time(ocelot, ageing_time);
}
static void ocelot_port_attr_mc_set(struct ocelot *ocelot, int port, bool mc)
{
u32 cpu_fwd_mcast = ANA_PORT_CPU_FWD_CFG_CPU_IGMP_REDIR_ENA |
ANA_PORT_CPU_FWD_CFG_CPU_MLD_REDIR_ENA |
ANA_PORT_CPU_FWD_CFG_CPU_IPMC_CTRL_COPY_ENA;
u32 val = 0;
if (mc)
val = cpu_fwd_mcast;
ocelot_rmw_gix(ocelot, val, cpu_fwd_mcast,
ANA_PORT_CPU_FWD_CFG, port);
}
static int ocelot_port_attr_set(struct net_device *dev, const void *ctx,
const struct switchdev_attr *attr,
struct netlink_ext_ack *extack)
{
struct ocelot_port_private *priv = netdev_priv(dev);
struct ocelot *ocelot = priv->port.ocelot;
int port = priv->port.index;
int err = 0;
if (ctx && ctx != priv)
return 0;
switch (attr->id) {
case SWITCHDEV_ATTR_ID_PORT_STP_STATE:
ocelot_port_attr_stp_state_set(ocelot, port, attr->u.stp_state);
break;
case SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME:
ocelot_port_attr_ageing_set(ocelot, port, attr->u.ageing_time);
break;
case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING:
ocelot_port_vlan_filtering(ocelot, port, attr->u.vlan_filtering,
extack);
break;
case SWITCHDEV_ATTR_ID_BRIDGE_MC_DISABLED:
ocelot_port_attr_mc_set(ocelot, port, !attr->u.mc_disabled);
break;
case SWITCHDEV_ATTR_ID_PORT_PRE_BRIDGE_FLAGS:
err = ocelot_port_pre_bridge_flags(ocelot, port,
attr->u.brport_flags);
break;
case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS:
ocelot_port_bridge_flags(ocelot, port, attr->u.brport_flags);
break;
default:
err = -EOPNOTSUPP;
break;
}
return err;
}
static int ocelot_vlan_vid_prepare(struct net_device *dev, u16 vid, bool pvid,
bool untagged, struct netlink_ext_ack *extack)
{
struct ocelot_port_private *priv = netdev_priv(dev);
struct ocelot_port *ocelot_port = &priv->port;
struct ocelot *ocelot = ocelot_port->ocelot;
int port = priv->port.index;
return ocelot_vlan_prepare(ocelot, port, vid, pvid, untagged, extack);
}
static int ocelot_port_obj_add_vlan(struct net_device *dev,
const struct switchdev_obj_port_vlan *vlan,
struct netlink_ext_ack *extack)
{
bool untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED;
bool pvid = vlan->flags & BRIDGE_VLAN_INFO_PVID;
int ret;
ret = ocelot_vlan_vid_prepare(dev, vlan->vid, pvid, untagged, extack);
if (ret)
return ret;
return ocelot_vlan_vid_add(dev, vlan->vid, pvid, untagged);
}
static int ocelot_port_obj_add_mdb(struct net_device *dev,
const struct switchdev_obj_port_mdb *mdb)
{
struct ocelot_port_private *priv = netdev_priv(dev);
struct ocelot_port *ocelot_port = &priv->port;
struct ocelot *ocelot = ocelot_port->ocelot;
int port = priv->port.index;
return ocelot_port_mdb_add(ocelot, port, mdb, ocelot_port->bridge);
}
static int ocelot_port_obj_del_mdb(struct net_device *dev,
const struct switchdev_obj_port_mdb *mdb)
{
struct ocelot_port_private *priv = netdev_priv(dev);
struct ocelot_port *ocelot_port = &priv->port;
struct ocelot *ocelot = ocelot_port->ocelot;
int port = priv->port.index;
return ocelot_port_mdb_del(ocelot, port, mdb, ocelot_port->bridge);
}
static int ocelot_port_obj_mrp_add(struct net_device *dev,
const struct switchdev_obj_mrp *mrp)
{
struct ocelot_port_private *priv = netdev_priv(dev);
struct ocelot_port *ocelot_port = &priv->port;
struct ocelot *ocelot = ocelot_port->ocelot;
int port = priv->port.index;
return ocelot_mrp_add(ocelot, port, mrp);
}
static int ocelot_port_obj_mrp_del(struct net_device *dev,
const struct switchdev_obj_mrp *mrp)
{
struct ocelot_port_private *priv = netdev_priv(dev);
struct ocelot_port *ocelot_port = &priv->port;
struct ocelot *ocelot = ocelot_port->ocelot;
int port = priv->port.index;
return ocelot_mrp_del(ocelot, port, mrp);
}
static int
ocelot_port_obj_mrp_add_ring_role(struct net_device *dev,
const struct switchdev_obj_ring_role_mrp *mrp)
{
struct ocelot_port_private *priv = netdev_priv(dev);
struct ocelot_port *ocelot_port = &priv->port;
struct ocelot *ocelot = ocelot_port->ocelot;
int port = priv->port.index;
return ocelot_mrp_add_ring_role(ocelot, port, mrp);
}
static int
ocelot_port_obj_mrp_del_ring_role(struct net_device *dev,
const struct switchdev_obj_ring_role_mrp *mrp)
{
struct ocelot_port_private *priv = netdev_priv(dev);
struct ocelot_port *ocelot_port = &priv->port;
struct ocelot *ocelot = ocelot_port->ocelot;
int port = priv->port.index;
return ocelot_mrp_del_ring_role(ocelot, port, mrp);
}
static int ocelot_port_obj_add(struct net_device *dev, const void *ctx,
const struct switchdev_obj *obj,
struct netlink_ext_ack *extack)
{
struct ocelot_port_private *priv = netdev_priv(dev);
int ret = 0;
if (ctx && ctx != priv)
return 0;
switch (obj->id) {
case SWITCHDEV_OBJ_ID_PORT_VLAN:
ret = ocelot_port_obj_add_vlan(dev,
SWITCHDEV_OBJ_PORT_VLAN(obj),
extack);
break;
case SWITCHDEV_OBJ_ID_PORT_MDB:
ret = ocelot_port_obj_add_mdb(dev, SWITCHDEV_OBJ_PORT_MDB(obj));
break;
case SWITCHDEV_OBJ_ID_MRP:
ret = ocelot_port_obj_mrp_add(dev, SWITCHDEV_OBJ_MRP(obj));
break;
case SWITCHDEV_OBJ_ID_RING_ROLE_MRP:
ret = ocelot_port_obj_mrp_add_ring_role(dev,
SWITCHDEV_OBJ_RING_ROLE_MRP(obj));
break;
default:
return -EOPNOTSUPP;
}
return ret;
}
static int ocelot_port_obj_del(struct net_device *dev, const void *ctx,
const struct switchdev_obj *obj)
{
struct ocelot_port_private *priv = netdev_priv(dev);
int ret = 0;
if (ctx && ctx != priv)
return 0;
switch (obj->id) {
case SWITCHDEV_OBJ_ID_PORT_VLAN:
ret = ocelot_vlan_vid_del(dev,
SWITCHDEV_OBJ_PORT_VLAN(obj)->vid);
break;
case SWITCHDEV_OBJ_ID_PORT_MDB:
ret = ocelot_port_obj_del_mdb(dev, SWITCHDEV_OBJ_PORT_MDB(obj));
break;
case SWITCHDEV_OBJ_ID_MRP:
ret = ocelot_port_obj_mrp_del(dev, SWITCHDEV_OBJ_MRP(obj));
break;
case SWITCHDEV_OBJ_ID_RING_ROLE_MRP:
ret = ocelot_port_obj_mrp_del_ring_role(dev,
SWITCHDEV_OBJ_RING_ROLE_MRP(obj));
break;
default:
return -EOPNOTSUPP;
}
return ret;
}
static void ocelot_inherit_brport_flags(struct ocelot *ocelot, int port,
struct net_device *brport_dev)
{
struct switchdev_brport_flags flags = {0};
int flag;
flags.mask = BR_LEARNING | BR_FLOOD | BR_MCAST_FLOOD | BR_BCAST_FLOOD;
for_each_set_bit(flag, &flags.mask, 32)
if (br_port_flag_is_set(brport_dev, BIT(flag)))
flags.val |= BIT(flag);
ocelot_port_bridge_flags(ocelot, port, flags);
}
static void ocelot_clear_brport_flags(struct ocelot *ocelot, int port)
{
struct switchdev_brport_flags flags;
flags.mask = BR_LEARNING | BR_FLOOD | BR_MCAST_FLOOD | BR_BCAST_FLOOD;
flags.val = flags.mask & ~BR_LEARNING;
ocelot_port_bridge_flags(ocelot, port, flags);
}
static int ocelot_switchdev_sync(struct ocelot *ocelot, int port,
struct net_device *brport_dev,
struct net_device *bridge_dev,
struct netlink_ext_ack *extack)
{
clock_t ageing_time;
u8 stp_state;
ocelot_inherit_brport_flags(ocelot, port, brport_dev);
stp_state = br_port_get_stp_state(brport_dev);
ocelot_bridge_stp_state_set(ocelot, port, stp_state);
ageing_time = br_get_ageing_time(bridge_dev);
ocelot_port_attr_ageing_set(ocelot, port, ageing_time);
return ocelot_port_vlan_filtering(ocelot, port,
br_vlan_enabled(bridge_dev),
extack);
}
static int ocelot_switchdev_unsync(struct ocelot *ocelot, int port)
{
int err;
err = ocelot_port_vlan_filtering(ocelot, port, false, NULL);
if (err)
return err;
ocelot_clear_brport_flags(ocelot, port);
ocelot_bridge_stp_state_set(ocelot, port, BR_STATE_FORWARDING);
return 0;
}
static int ocelot_bridge_num_get(struct ocelot *ocelot,
const struct net_device *bridge_dev)
{
int bridge_num = ocelot_bridge_num_find(ocelot, bridge_dev);
if (bridge_num < 0) {
/* First port that offloads this bridge */
bridge_num = find_first_zero_bit(&ocelot->bridges,
ocelot->num_phys_ports);
set_bit(bridge_num, &ocelot->bridges);
}
return bridge_num;
}
static void ocelot_bridge_num_put(struct ocelot *ocelot,
const struct net_device *bridge_dev,
int bridge_num)
{
/* Check if the bridge is still in use, otherwise it is time
* to clean it up so we can reuse this bridge_num later.
*/
if (!ocelot_bridge_num_find(ocelot, bridge_dev))
clear_bit(bridge_num, &ocelot->bridges);
}
static int ocelot_netdevice_bridge_join(struct net_device *dev,
struct net_device *brport_dev,
struct net_device *bridge,
struct netlink_ext_ack *extack)
{
struct ocelot_port_private *priv = netdev_priv(dev);
struct ocelot_port *ocelot_port = &priv->port;
struct ocelot *ocelot = ocelot_port->ocelot;
int port = priv->port.index;
int bridge_num, err;
bridge_num = ocelot_bridge_num_get(ocelot, bridge);
err = ocelot_port_bridge_join(ocelot, port, bridge, bridge_num,
extack);
if (err)
goto err_join;
err = switchdev_bridge_port_offload(brport_dev, dev, priv,
&ocelot_switchdev_nb,
&ocelot_switchdev_blocking_nb,
false, extack);
if (err)
goto err_switchdev_offload;
err = ocelot_switchdev_sync(ocelot, port, brport_dev, bridge, extack);
if (err)
goto err_switchdev_sync;
return 0;
err_switchdev_sync:
switchdev_bridge_port_unoffload(brport_dev, priv,
&ocelot_switchdev_nb,
&ocelot_switchdev_blocking_nb);
err_switchdev_offload:
ocelot_port_bridge_leave(ocelot, port, bridge);
err_join:
ocelot_bridge_num_put(ocelot, bridge, bridge_num);
return err;
}
static void ocelot_netdevice_pre_bridge_leave(struct net_device *dev,
struct net_device *brport_dev)
{
struct ocelot_port_private *priv = netdev_priv(dev);
switchdev_bridge_port_unoffload(brport_dev, priv,
&ocelot_switchdev_nb,
&ocelot_switchdev_blocking_nb);
}
static int ocelot_netdevice_bridge_leave(struct net_device *dev,
struct net_device *brport_dev,
struct net_device *bridge)
{
struct ocelot_port_private *priv = netdev_priv(dev);
struct ocelot_port *ocelot_port = &priv->port;
struct ocelot *ocelot = ocelot_port->ocelot;
int bridge_num = ocelot_port->bridge_num;
int port = priv->port.index;
int err;
err = ocelot_switchdev_unsync(ocelot, port);
if (err)
return err;
ocelot_port_bridge_leave(ocelot, port, bridge);
ocelot_bridge_num_put(ocelot, bridge, bridge_num);
return 0;
}
static int ocelot_netdevice_lag_join(struct net_device *dev,
struct net_device *bond,
struct netdev_lag_upper_info *info,
struct netlink_ext_ack *extack)
{
struct ocelot_port_private *priv = netdev_priv(dev);
struct ocelot_port *ocelot_port = &priv->port;
struct ocelot *ocelot = ocelot_port->ocelot;
struct net_device *bridge_dev;
int port = priv->port.index;
int err;
err = ocelot_port_lag_join(ocelot, port, bond, info, extack);
if (err == -EOPNOTSUPP)
/* Offloading not supported, fall back to software LAG */
return 0;
bridge_dev = netdev_master_upper_dev_get(bond);
if (!bridge_dev || !netif_is_bridge_master(bridge_dev))
return 0;
err = ocelot_netdevice_bridge_join(dev, bond, bridge_dev, extack);
if (err)
goto err_bridge_join;
return 0;
err_bridge_join:
ocelot_port_lag_leave(ocelot, port, bond);
return err;
}
static void ocelot_netdevice_pre_lag_leave(struct net_device *dev,
struct net_device *bond)
{
struct net_device *bridge_dev;
bridge_dev = netdev_master_upper_dev_get(bond);
if (!bridge_dev || !netif_is_bridge_master(bridge_dev))
return;
ocelot_netdevice_pre_bridge_leave(dev, bond);
}
static int ocelot_netdevice_lag_leave(struct net_device *dev,
struct net_device *bond)
{
struct ocelot_port_private *priv = netdev_priv(dev);
struct ocelot_port *ocelot_port = &priv->port;
struct ocelot *ocelot = ocelot_port->ocelot;
struct net_device *bridge_dev;
int port = priv->port.index;
ocelot_port_lag_leave(ocelot, port, bond);
bridge_dev = netdev_master_upper_dev_get(bond);
if (!bridge_dev || !netif_is_bridge_master(bridge_dev))
return 0;
return ocelot_netdevice_bridge_leave(dev, bond, bridge_dev);
}
static int ocelot_netdevice_changeupper(struct net_device *dev,
struct net_device *brport_dev,
struct netdev_notifier_changeupper_info *info)
{
struct netlink_ext_ack *extack;
int err = 0;
extack = netdev_notifier_info_to_extack(&info->info);
if (netif_is_bridge_master(info->upper_dev)) {
if (info->linking)
err = ocelot_netdevice_bridge_join(dev, brport_dev,
info->upper_dev,
extack);
else
err = ocelot_netdevice_bridge_leave(dev, brport_dev,
info->upper_dev);
}
if (netif_is_lag_master(info->upper_dev)) {
if (info->linking)
err = ocelot_netdevice_lag_join(dev, info->upper_dev,
info->upper_info, extack);
else
ocelot_netdevice_lag_leave(dev, info->upper_dev);
}
return notifier_from_errno(err);
}
/* Treat CHANGEUPPER events on an offloaded LAG as individual CHANGEUPPER
* events for the lower physical ports of the LAG.
* If the LAG upper isn't offloaded, ignore its CHANGEUPPER events.
* In case the LAG joined a bridge, notify that we are offloading it and can do
* forwarding in hardware towards it.
*/
static int
ocelot_netdevice_lag_changeupper(struct net_device *dev,
struct netdev_notifier_changeupper_info *info)
{
struct net_device *lower;
struct list_head *iter;
int err = NOTIFY_DONE;
netdev_for_each_lower_dev(dev, lower, iter) {
struct ocelot_port_private *priv = netdev_priv(lower);
struct ocelot_port *ocelot_port = &priv->port;
if (ocelot_port->bond != dev)
return NOTIFY_OK;
err = ocelot_netdevice_changeupper(lower, dev, info);
if (err)
return notifier_from_errno(err);
}
return NOTIFY_DONE;
}
static int
ocelot_netdevice_prechangeupper(struct net_device *dev,
struct net_device *brport_dev,
struct netdev_notifier_changeupper_info *info)
{
if (netif_is_bridge_master(info->upper_dev) && !info->linking)
ocelot_netdevice_pre_bridge_leave(dev, brport_dev);
if (netif_is_lag_master(info->upper_dev) && !info->linking)
ocelot_netdevice_pre_lag_leave(dev, info->upper_dev);
return NOTIFY_DONE;
}
static int
ocelot_netdevice_lag_prechangeupper(struct net_device *dev,
struct netdev_notifier_changeupper_info *info)
{
struct net_device *lower;
struct list_head *iter;
int err = NOTIFY_DONE;
netdev_for_each_lower_dev(dev, lower, iter) {
struct ocelot_port_private *priv = netdev_priv(lower);
struct ocelot_port *ocelot_port = &priv->port;
if (ocelot_port->bond != dev)
return NOTIFY_OK;
err = ocelot_netdevice_prechangeupper(dev, lower, info);
if (err)
return err;
}
return NOTIFY_DONE;
}
static int
ocelot_netdevice_changelowerstate(struct net_device *dev,
struct netdev_lag_lower_state_info *info)
{
struct ocelot_port_private *priv = netdev_priv(dev);
bool is_active = info->link_up && info->tx_enabled;
struct ocelot_port *ocelot_port = &priv->port;
struct ocelot *ocelot = ocelot_port->ocelot;
int port = priv->port.index;
if (!ocelot_port->bond)
return NOTIFY_DONE;
if (ocelot_port->lag_tx_active == is_active)
return NOTIFY_DONE;
ocelot_port_lag_change(ocelot, port, is_active);
return NOTIFY_OK;
}
static int ocelot_netdevice_event(struct notifier_block *unused,
unsigned long event, void *ptr)
{
struct net_device *dev = netdev_notifier_info_to_dev(ptr);
switch (event) {
case NETDEV_PRECHANGEUPPER: {
struct netdev_notifier_changeupper_info *info = ptr;
if (ocelot_netdevice_dev_check(dev))
return ocelot_netdevice_prechangeupper(dev, dev, info);
if (netif_is_lag_master(dev))
return ocelot_netdevice_lag_prechangeupper(dev, info);
break;
}
case NETDEV_CHANGEUPPER: {
struct netdev_notifier_changeupper_info *info = ptr;
if (ocelot_netdevice_dev_check(dev))
return ocelot_netdevice_changeupper(dev, dev, info);
if (netif_is_lag_master(dev))
return ocelot_netdevice_lag_changeupper(dev, info);
break;
}
case NETDEV_CHANGELOWERSTATE: {
struct netdev_notifier_changelowerstate_info *info = ptr;
if (!ocelot_netdevice_dev_check(dev))
break;
return ocelot_netdevice_changelowerstate(dev,
info->lower_state_info);
}
default:
break;
}
return NOTIFY_DONE;
}
struct notifier_block ocelot_netdevice_nb __read_mostly = {
.notifier_call = ocelot_netdevice_event,
};
static int ocelot_switchdev_event(struct notifier_block *unused,
unsigned long event, void *ptr)
{
struct net_device *dev = switchdev_notifier_info_to_dev(ptr);
int err;
switch (event) {
case SWITCHDEV_PORT_ATTR_SET:
err = switchdev_handle_port_attr_set(dev, ptr,
ocelot_netdevice_dev_check,
ocelot_port_attr_set);
return notifier_from_errno(err);
}
return NOTIFY_DONE;
}
struct notifier_block ocelot_switchdev_nb __read_mostly = {
.notifier_call = ocelot_switchdev_event,
};
static int ocelot_switchdev_blocking_event(struct notifier_block *unused,
unsigned long event, void *ptr)
{
struct net_device *dev = switchdev_notifier_info_to_dev(ptr);
int err;
switch (event) {
/* Blocking events. */
case SWITCHDEV_PORT_OBJ_ADD:
err = switchdev_handle_port_obj_add(dev, ptr,
ocelot_netdevice_dev_check,
ocelot_port_obj_add);
return notifier_from_errno(err);
case SWITCHDEV_PORT_OBJ_DEL:
err = switchdev_handle_port_obj_del(dev, ptr,
ocelot_netdevice_dev_check,
ocelot_port_obj_del);
return notifier_from_errno(err);
case SWITCHDEV_PORT_ATTR_SET:
err = switchdev_handle_port_attr_set(dev, ptr,
ocelot_netdevice_dev_check,
ocelot_port_attr_set);
return notifier_from_errno(err);
}
return NOTIFY_DONE;
}
struct notifier_block ocelot_switchdev_blocking_nb __read_mostly = {
.notifier_call = ocelot_switchdev_blocking_event,
};
static void vsc7514_phylink_mac_config(struct phylink_config *config,
unsigned int link_an_mode,
const struct phylink_link_state *state)
{
struct net_device *ndev = to_net_dev(config->dev);
struct ocelot_port_private *priv = netdev_priv(ndev);
struct ocelot_port *ocelot_port = &priv->port;
/* Disable HDX fast control */
ocelot_port_writel(ocelot_port, DEV_PORT_MISC_HDX_FAST_DIS,
DEV_PORT_MISC);
/* SGMII only for now */
ocelot_port_writel(ocelot_port, PCS1G_MODE_CFG_SGMII_MODE_ENA,
PCS1G_MODE_CFG);
ocelot_port_writel(ocelot_port, PCS1G_SD_CFG_SD_SEL, PCS1G_SD_CFG);
/* Enable PCS */
ocelot_port_writel(ocelot_port, PCS1G_CFG_PCS_ENA, PCS1G_CFG);
/* No aneg on SGMII */
ocelot_port_writel(ocelot_port, 0, PCS1G_ANEG_CFG);
/* No loopback */
ocelot_port_writel(ocelot_port, 0, PCS1G_LB_CFG);
}
static void vsc7514_phylink_mac_link_down(struct phylink_config *config,
unsigned int link_an_mode,
phy_interface_t interface)
{
struct net_device *ndev = to_net_dev(config->dev);
struct ocelot_port_private *priv = netdev_priv(ndev);
struct ocelot *ocelot = priv->port.ocelot;
int port = priv->port.index;
ocelot_phylink_mac_link_down(ocelot, port, link_an_mode, interface,
OCELOT_MAC_QUIRKS);
}
static void vsc7514_phylink_mac_link_up(struct phylink_config *config,
struct phy_device *phydev,
unsigned int link_an_mode,
phy_interface_t interface,
int speed, int duplex,
bool tx_pause, bool rx_pause)
{
struct net_device *ndev = to_net_dev(config->dev);
struct ocelot_port_private *priv = netdev_priv(ndev);
struct ocelot *ocelot = priv->port.ocelot;
int port = priv->port.index;
ocelot_phylink_mac_link_up(ocelot, port, phydev, link_an_mode,
interface, speed, duplex,
tx_pause, rx_pause, OCELOT_MAC_QUIRKS);
}
static const struct phylink_mac_ops ocelot_phylink_ops = {
.validate = phylink_generic_validate,
.mac_config = vsc7514_phylink_mac_config,
.mac_link_down = vsc7514_phylink_mac_link_down,
.mac_link_up = vsc7514_phylink_mac_link_up,
};
static int ocelot_port_phylink_create(struct ocelot *ocelot, int port,
struct device_node *portnp)
{
struct ocelot_port *ocelot_port = ocelot->ports[port];
struct ocelot_port_private *priv;
struct device *dev = ocelot->dev;
phy_interface_t phy_mode;
struct phylink *phylink;
int err;
of_get_phy_mode(portnp, &phy_mode);
/* DT bindings of internal PHY ports are broken and don't
* specify a phy-mode
*/
if (phy_mode == PHY_INTERFACE_MODE_NA)
phy_mode = PHY_INTERFACE_MODE_INTERNAL;
if (phy_mode != PHY_INTERFACE_MODE_SGMII &&
phy_mode != PHY_INTERFACE_MODE_QSGMII &&
phy_mode != PHY_INTERFACE_MODE_INTERNAL) {
dev_err(dev, "unsupported phy mode %s for port %d\n",
phy_modes(phy_mode), port);
return -EINVAL;
}
/* Ensure clock signals and speed are set on all QSGMII links */
if (phy_mode == PHY_INTERFACE_MODE_QSGMII)
ocelot_port_rmwl(ocelot_port, 0,
DEV_CLOCK_CFG_MAC_TX_RST |
DEV_CLOCK_CFG_MAC_RX_RST,
DEV_CLOCK_CFG);
ocelot_port->phy_mode = phy_mode;
if (phy_mode != PHY_INTERFACE_MODE_INTERNAL) {
struct phy *serdes = of_phy_get(portnp, NULL);
if (IS_ERR(serdes)) {
err = PTR_ERR(serdes);
dev_err_probe(dev, err,
"missing SerDes phys for port %d\n",
port);
return err;
}
err = phy_set_mode_ext(serdes, PHY_MODE_ETHERNET, phy_mode);
of_phy_put(serdes);
if (err) {
dev_err(dev, "Could not SerDes mode on port %d: %pe\n",
port, ERR_PTR(err));
return err;
}
}
priv = container_of(ocelot_port, struct ocelot_port_private, port);
priv->phylink_config.dev = &priv->dev->dev;
priv->phylink_config.type = PHYLINK_NETDEV;
priv->phylink_config.mac_capabilities = MAC_ASYM_PAUSE | MAC_SYM_PAUSE |
MAC_10 | MAC_100 | MAC_1000FD | MAC_2500FD;
__set_bit(ocelot_port->phy_mode,
priv->phylink_config.supported_interfaces);
phylink = phylink_create(&priv->phylink_config,
of_fwnode_handle(portnp),
phy_mode, &ocelot_phylink_ops);
if (IS_ERR(phylink)) {
err = PTR_ERR(phylink);
dev_err(dev, "Could not create phylink (%pe)\n", phylink);
return err;
}
priv->phylink = phylink;
err = phylink_of_phy_connect(phylink, portnp, 0);
if (err) {
dev_err(dev, "Could not connect to PHY: %pe\n", ERR_PTR(err));
phylink_destroy(phylink);
priv->phylink = NULL;
return err;
}
return 0;
}
int ocelot_probe_port(struct ocelot *ocelot, int port, struct regmap *target,
struct device_node *portnp)
{
struct ocelot_port_private *priv;
struct ocelot_port *ocelot_port;
struct net_device *dev;
int err;
dev = alloc_etherdev(sizeof(struct ocelot_port_private));
if (!dev)
return -ENOMEM;
SET_NETDEV_DEV(dev, ocelot->dev);
priv = netdev_priv(dev);
priv->dev = dev;
ocelot_port = &priv->port;
ocelot_port->ocelot = ocelot;
ocelot_port->index = port;
ocelot_port->target = target;
ocelot->ports[port] = ocelot_port;
dev->netdev_ops = &ocelot_port_netdev_ops;
dev->ethtool_ops = &ocelot_ethtool_ops;
dev->max_mtu = OCELOT_JUMBO_MTU;
dev->hw_features |= NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_RXFCS |
NETIF_F_HW_TC;
dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_TC;
err = of_get_ethdev_address(portnp, dev);
if (err)
eth_hw_addr_gen(dev, ocelot->base_mac, port);
ocelot_mact_learn(ocelot, PGID_CPU, dev->dev_addr,
OCELOT_STANDALONE_PVID, ENTRYTYPE_LOCKED);
ocelot_init_port(ocelot, port);
err = ocelot_port_phylink_create(ocelot, port, portnp);
if (err)
goto out;
if (ocelot->fdma)
ocelot_fdma_netdev_init(ocelot, dev);
err = register_netdev(dev);
if (err) {
dev_err(ocelot->dev, "register_netdev failed\n");
goto out_fdma_deinit;
}
return 0;
out_fdma_deinit:
if (ocelot->fdma)
ocelot_fdma_netdev_deinit(ocelot, dev);
out:
ocelot->ports[port] = NULL;
free_netdev(dev);
return err;
}
void ocelot_release_port(struct ocelot_port *ocelot_port)
{
struct ocelot_port_private *priv = container_of(ocelot_port,
struct ocelot_port_private,
port);
struct ocelot *ocelot = ocelot_port->ocelot;
struct ocelot_fdma *fdma = ocelot->fdma;
unregister_netdev(priv->dev);
if (fdma)
ocelot_fdma_netdev_deinit(ocelot, priv->dev);
if (priv->phylink) {
rtnl_lock();
phylink_disconnect_phy(priv->phylink);
rtnl_unlock();
phylink_destroy(priv->phylink);
}
free_netdev(priv->dev);
}