// SPDX-License-Identifier: GPL-2.0
/*
* DPAA2 Ethernet Switch driver
*
* Copyright 2014-2016 Freescale Semiconductor Inc.
* Copyright 2017-2021 NXP
*
*/
#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/kthread.h>
#include <linux/workqueue.h>
#include <linux/iommu.h>
#include <net/pkt_cls.h>
#include <linux/fsl/mc.h>
#include "dpaa2-switch.h"
/* Minimal supported DPSW version */
#define DPSW_MIN_VER_MAJOR 8
#define DPSW_MIN_VER_MINOR 9
#define DEFAULT_VLAN_ID 1
static u16 dpaa2_switch_port_get_fdb_id(struct ethsw_port_priv *port_priv)
{
return port_priv->fdb->fdb_id;
}
static struct dpaa2_switch_fdb *dpaa2_switch_fdb_get_unused(struct ethsw_core *ethsw)
{
int i;
for (i = 0; i < ethsw->sw_attr.num_ifs; i++)
if (!ethsw->fdbs[i].in_use)
return ðsw->fdbs[i];
return NULL;
}
static struct dpaa2_switch_filter_block *
dpaa2_switch_filter_block_get_unused(struct ethsw_core *ethsw)
{
int i;
for (i = 0; i < ethsw->sw_attr.num_ifs; i++)
if (!ethsw->filter_blocks[i].in_use)
return ðsw->filter_blocks[i];
return NULL;
}
static u16 dpaa2_switch_port_set_fdb(struct ethsw_port_priv *port_priv,
struct net_device *bridge_dev)
{
struct ethsw_port_priv *other_port_priv = NULL;
struct dpaa2_switch_fdb *fdb;
struct net_device *other_dev;
struct list_head *iter;
/* If we leave a bridge (bridge_dev is NULL), find an unused
* FDB and use that.
*/
if (!bridge_dev) {
fdb = dpaa2_switch_fdb_get_unused(port_priv->ethsw_data);
/* If there is no unused FDB, we must be the last port that
* leaves the last bridge, all the others are standalone. We
* can just keep the FDB that we already have.
*/
if (!fdb) {
port_priv->fdb->bridge_dev = NULL;
return 0;
}
port_priv->fdb = fdb;
port_priv->fdb->in_use = true ;
port_priv->fdb->bridge_dev = NULL;
return 0;
}
/* The below call to netdev_for_each_lower_dev() demands the RTNL lock
* being held. Assert on it so that it's easier to catch new code
* paths that reach this point without the RTNL lock.
*/
ASSERT_RTNL();
/* If part of a bridge, use the FDB of the first dpaa2 switch interface
* to be present in that bridge
*/
netdev_for_each_lower_dev(bridge_dev, other_dev, iter) {
if (!dpaa2_switch_port_dev_check(other_dev))
continue ;
if (other_dev == port_priv->netdev)
continue ;
other_port_priv = netdev_priv(other_dev);
break ;
}
/* The current port is about to change its FDB to the one used by the
* first port that joined the bridge.
*/
if (other_port_priv) {
/* The previous FDB is about to become unused, since the
* interface is no longer standalone.
*/
port_priv->fdb->in_use = false ;
port_priv->fdb->bridge_dev = NULL;
/* Get a reference to the new FDB */
port_priv->fdb = other_port_priv->fdb;
}
/* Keep track of the new upper bridge device */
port_priv->fdb->bridge_dev = bridge_dev;
return 0;
}
static void dpaa2_switch_fdb_get_flood_cfg(struct ethsw_core *ethsw, u16 fdb_id,
enum dpsw_flood_type type,
struct dpsw_egress_flood_cfg *cfg)
{
int i = 0, j;
memset(cfg, 0, sizeof (*cfg));
/* Add all the DPAA2 switch ports found in the same bridging domain to
* the egress flooding domain
*/
for (j = 0; j < ethsw->sw_attr.num_ifs; j++) {
if (!ethsw->ports[j])
continue ;
if (ethsw->ports[j]->fdb->fdb_id != fdb_id)
continue ;
if (type == DPSW_BROADCAST && ethsw->ports[j]->bcast_flood)
cfg->if_id[i++] = ethsw->ports[j]->idx;
else if (type == DPSW_FLOODING && ethsw->ports[j]->ucast_flood)
cfg->if_id[i++] = ethsw->ports[j]->idx;
}
/* Add the CTRL interface to the egress flooding domain */
cfg->if_id[i++] = ethsw->sw_attr.num_ifs;
cfg->fdb_id = fdb_id;
cfg->flood_type = type;
cfg->num_ifs = i;
}
static int dpaa2_switch_fdb_set_egress_flood(struct ethsw_core *ethsw, u16 fdb_id)
{
struct dpsw_egress_flood_cfg flood_cfg;
int err;
/* Setup broadcast flooding domain */
dpaa2_switch_fdb_get_flood_cfg(ethsw, fdb_id, DPSW_BROADCAST, &flood_cfg);
err = dpsw_set_egress_flood(ethsw->mc_io, 0, ethsw->dpsw_handle,
&flood_cfg);
if (err) {
dev_err(ethsw->dev, "dpsw_set_egress_flood() = %d\n" , err);
return err;
}
/* Setup unknown flooding domain */
dpaa2_switch_fdb_get_flood_cfg(ethsw, fdb_id, DPSW_FLOODING, &flood_cfg);
err = dpsw_set_egress_flood(ethsw->mc_io, 0, ethsw->dpsw_handle,
&flood_cfg);
if (err) {
dev_err(ethsw->dev, "dpsw_set_egress_flood() = %d\n" , err);
return err;
}
return 0;
}
static void *dpaa2_iova_to_virt(struct iommu_domain *domain,
dma_addr_t iova_addr)
{
phys_addr_t phys_addr;
phys_addr = domain ? iommu_iova_to_phys(domain, iova_addr) : iova_addr;
return phys_to_virt(phys_addr);
}
static int dpaa2_switch_add_vlan(struct ethsw_port_priv *port_priv, u16 vid)
{
struct ethsw_core *ethsw = port_priv->ethsw_data;
struct dpsw_vlan_cfg vcfg = {0};
int err;
vcfg.fdb_id = dpaa2_switch_port_get_fdb_id(port_priv);
err = dpsw_vlan_add(ethsw->mc_io, 0,
ethsw->dpsw_handle, vid, &vcfg);
if (err) {
dev_err(ethsw->dev, "dpsw_vlan_add err %d\n" , err);
return err;
}
ethsw->vlans[vid] = ETHSW_VLAN_MEMBER;
return 0;
}
static bool dpaa2_switch_port_is_up(struct ethsw_port_priv *port_priv)
{
struct net_device *netdev = port_priv->netdev;
struct dpsw_link_state state;
int err;
err = dpsw_if_get_link_state(port_priv->ethsw_data->mc_io, 0,
port_priv->ethsw_data->dpsw_handle,
port_priv->idx, &state);
if (err) {
netdev_err(netdev, "dpsw_if_get_link_state() err %d\n" , err);
return true ;
}
WARN_ONCE(state.up > 1, "Garbage read into link_state" );
return state.up ? true : false ;
}
static int dpaa2_switch_port_set_pvid(struct ethsw_port_priv *port_priv, u16 pvid)
{
struct ethsw_core *ethsw = port_priv->ethsw_data;
struct net_device *netdev = port_priv->netdev;
struct dpsw_tci_cfg tci_cfg = { 0 };
bool up;
int err, ret;
err = dpsw_if_get_tci(ethsw->mc_io, 0, ethsw->dpsw_handle,
port_priv->idx, &tci_cfg);
if (err) {
netdev_err(netdev, "dpsw_if_get_tci err %d\n" , err);
return err;
}
tci_cfg.vlan_id = pvid;
/* Interface needs to be down to change PVID */
up = dpaa2_switch_port_is_up(port_priv);
if (up) {
err = dpsw_if_disable(ethsw->mc_io, 0,
ethsw->dpsw_handle,
port_priv->idx);
if (err) {
netdev_err(netdev, "dpsw_if_disable err %d\n" , err);
return err;
}
}
err = dpsw_if_set_tci(ethsw->mc_io, 0, ethsw->dpsw_handle,
port_priv->idx, &tci_cfg);
if (err) {
netdev_err(netdev, "dpsw_if_set_tci err %d\n" , err);
goto set_tci_error;
}
/* Delete previous PVID info and mark the new one */
port_priv->vlans[port_priv->pvid] &= ~ETHSW_VLAN_PVID;
port_priv->vlans[pvid] |= ETHSW_VLAN_PVID;
port_priv->pvid = pvid;
set_tci_error:
if (up) {
ret = dpsw_if_enable(ethsw->mc_io, 0,
ethsw->dpsw_handle,
port_priv->idx);
if (ret) {
netdev_err(netdev, "dpsw_if_enable err %d\n" , ret);
return ret;
}
}
return err;
}
static int dpaa2_switch_port_add_vlan(struct ethsw_port_priv *port_priv,
u16 vid, u16 flags)
{
struct ethsw_core *ethsw = port_priv->ethsw_data;
struct net_device *netdev = port_priv->netdev;
struct dpsw_vlan_if_cfg vcfg = {0};
int err;
if (port_priv->vlans[vid]) {
netdev_err(netdev, "VLAN %d already configured\n" , vid);
return -EEXIST;
}
/* If hit, this VLAN rule will lead the packet into the FDB table
* specified in the vlan configuration below
*/
vcfg.num_ifs = 1;
vcfg.if_id[0] = port_priv->idx;
vcfg.fdb_id = dpaa2_switch_port_get_fdb_id(port_priv);
vcfg.options |= DPSW_VLAN_ADD_IF_OPT_FDB_ID;
err = dpsw_vlan_add_if(ethsw->mc_io, 0, ethsw->dpsw_handle, vid, &vcfg);
if (err) {
netdev_err(netdev, "dpsw_vlan_add_if err %d\n" , err);
return err;
}
port_priv->vlans[vid] = ETHSW_VLAN_MEMBER;
if (flags & BRIDGE_VLAN_INFO_UNTAGGED) {
err = dpsw_vlan_add_if_untagged(ethsw->mc_io, 0,
ethsw->dpsw_handle,
vid, &vcfg);
if (err) {
netdev_err(netdev,
"dpsw_vlan_add_if_untagged err %d\n" , err);
return err;
}
port_priv->vlans[vid] |= ETHSW_VLAN_UNTAGGED;
}
if (flags & BRIDGE_VLAN_INFO_PVID) {
err = dpaa2_switch_port_set_pvid(port_priv, vid);
if (err)
return err;
}
return 0;
}
static enum dpsw_stp_state br_stp_state_to_dpsw(u8 state)
{
switch (state) {
case BR_STATE_DISABLED:
return DPSW_STP_STATE_DISABLED;
case BR_STATE_LISTENING:
return DPSW_STP_STATE_LISTENING;
case BR_STATE_LEARNING:
return DPSW_STP_STATE_LEARNING;
case BR_STATE_FORWARDING:
return DPSW_STP_STATE_FORWARDING;
case BR_STATE_BLOCKING:
return DPSW_STP_STATE_BLOCKING;
default :
return DPSW_STP_STATE_DISABLED;
}
}
static int dpaa2_switch_port_set_stp_state(struct ethsw_port_priv *port_priv, u8 state)
{
struct dpsw_stp_cfg stp_cfg = {0};
int err;
u16 vid;
if (!netif_running(port_priv->netdev) || state == port_priv->stp_state)
return 0; /* Nothing to do */
stp_cfg.state = br_stp_state_to_dpsw(state);
for (vid = 0; vid <= VLAN_VID_MASK; vid++) {
if (port_priv->vlans[vid] & ETHSW_VLAN_MEMBER) {
stp_cfg.vlan_id = vid;
err = dpsw_if_set_stp(port_priv->ethsw_data->mc_io, 0,
port_priv->ethsw_data->dpsw_handle,
port_priv->idx, &stp_cfg);
if (err) {
netdev_err(port_priv->netdev,
"dpsw_if_set_stp err %d\n" , err);
return err;
}
}
}
port_priv->stp_state = state;
return 0;
}
static int dpaa2_switch_dellink(struct ethsw_core *ethsw, u16 vid)
{
struct ethsw_port_priv *ppriv_local = NULL;
int i, err;
if (!ethsw->vlans[vid])
return -ENOENT;
err = dpsw_vlan_remove(ethsw->mc_io, 0, ethsw->dpsw_handle, vid);
if (err) {
dev_err(ethsw->dev, "dpsw_vlan_remove err %d\n" , err);
return err;
}
ethsw->vlans[vid] = 0;
for (i = 0; i < ethsw->sw_attr.num_ifs; i++) {
ppriv_local = ethsw->ports[i];
if (ppriv_local)
ppriv_local->vlans[vid] = 0;
}
return 0;
}
static int dpaa2_switch_port_fdb_add_uc(struct ethsw_port_priv *port_priv,
const unsigned char *addr)
{
struct dpsw_fdb_unicast_cfg entry = {0};
u16 fdb_id;
int err;
entry.if_egress = port_priv->idx;
entry.type = DPSW_FDB_ENTRY_STATIC;
ether_addr_copy(entry.mac_addr, addr);
fdb_id = dpaa2_switch_port_get_fdb_id(port_priv);
err = dpsw_fdb_add_unicast(port_priv->ethsw_data->mc_io, 0,
port_priv->ethsw_data->dpsw_handle,
fdb_id, &entry);
if (err)
netdev_err(port_priv->netdev,
"dpsw_fdb_add_unicast err %d\n" , err);
return err;
}
static int dpaa2_switch_port_fdb_del_uc(struct ethsw_port_priv *port_priv,
const unsigned char *addr)
{
struct dpsw_fdb_unicast_cfg entry = {0};
u16 fdb_id;
int err;
entry.if_egress = port_priv->idx;
entry.type = DPSW_FDB_ENTRY_STATIC;
ether_addr_copy(entry.mac_addr, addr);
fdb_id = dpaa2_switch_port_get_fdb_id(port_priv);
err = dpsw_fdb_remove_unicast(port_priv->ethsw_data->mc_io, 0,
port_priv->ethsw_data->dpsw_handle,
fdb_id, &entry);
/* Silently discard error for calling multiple times the del command */
if (err && err != -ENXIO)
netdev_err(port_priv->netdev,
"dpsw_fdb_remove_unicast err %d\n" , err);
return err;
}
static int dpaa2_switch_port_fdb_add_mc(struct ethsw_port_priv *port_priv,
const unsigned char *addr)
{
struct dpsw_fdb_multicast_cfg entry = {0};
u16 fdb_id;
int err;
ether_addr_copy(entry.mac_addr, addr);
entry.type = DPSW_FDB_ENTRY_STATIC;
entry.num_ifs = 1;
entry.if_id[0] = port_priv->idx;
fdb_id = dpaa2_switch_port_get_fdb_id(port_priv);
err = dpsw_fdb_add_multicast(port_priv->ethsw_data->mc_io, 0,
port_priv->ethsw_data->dpsw_handle,
fdb_id, &entry);
/* Silently discard error for calling multiple times the add command */
if (err && err != -ENXIO)
netdev_err(port_priv->netdev, "dpsw_fdb_add_multicast err %d\n" ,
err);
return err;
}
static int dpaa2_switch_port_fdb_del_mc(struct ethsw_port_priv *port_priv,
const unsigned char *addr)
{
struct dpsw_fdb_multicast_cfg entry = {0};
u16 fdb_id;
int err;
ether_addr_copy(entry.mac_addr, addr);
entry.type = DPSW_FDB_ENTRY_STATIC;
entry.num_ifs = 1;
entry.if_id[0] = port_priv->idx;
fdb_id = dpaa2_switch_port_get_fdb_id(port_priv);
err = dpsw_fdb_remove_multicast(port_priv->ethsw_data->mc_io, 0,
port_priv->ethsw_data->dpsw_handle,
fdb_id, &entry);
/* Silently discard error for calling multiple times the del command */
if (err && err != -ENAVAIL)
netdev_err(port_priv->netdev,
"dpsw_fdb_remove_multicast err %d\n" , err);
return err;
}
static void dpaa2_switch_port_get_stats(struct net_device *netdev,
struct rtnl_link_stats64 *stats)
{
struct ethsw_port_priv *port_priv = netdev_priv(netdev);
u64 tmp;
int err;
err = dpsw_if_get_counter(port_priv->ethsw_data->mc_io, 0,
port_priv->ethsw_data->dpsw_handle,
port_priv->idx,
DPSW_CNT_ING_FRAME, &stats->rx_packets);
if (err)
goto error;
err = dpsw_if_get_counter(port_priv->ethsw_data->mc_io, 0,
port_priv->ethsw_data->dpsw_handle,
port_priv->idx,
DPSW_CNT_EGR_FRAME, &stats->tx_packets);
if (err)
goto error;
err = dpsw_if_get_counter(port_priv->ethsw_data->mc_io, 0,
port_priv->ethsw_data->dpsw_handle,
port_priv->idx,
DPSW_CNT_ING_BYTE, &stats->rx_bytes);
if (err)
goto error;
err = dpsw_if_get_counter(port_priv->ethsw_data->mc_io, 0,
port_priv->ethsw_data->dpsw_handle,
port_priv->idx,
DPSW_CNT_EGR_BYTE, &stats->tx_bytes);
if (err)
goto error;
err = dpsw_if_get_counter(port_priv->ethsw_data->mc_io, 0,
port_priv->ethsw_data->dpsw_handle,
port_priv->idx,
DPSW_CNT_ING_FRAME_DISCARD,
&stats->rx_dropped);
if (err)
goto error;
err = dpsw_if_get_counter(port_priv->ethsw_data->mc_io, 0,
port_priv->ethsw_data->dpsw_handle,
port_priv->idx,
DPSW_CNT_ING_FLTR_FRAME,
&tmp);
if (err)
goto error;
stats->rx_dropped += tmp;
err = dpsw_if_get_counter(port_priv->ethsw_data->mc_io, 0,
port_priv->ethsw_data->dpsw_handle,
port_priv->idx,
DPSW_CNT_EGR_FRAME_DISCARD,
&stats->tx_dropped);
if (err)
goto error;
return ;
error:
netdev_err(netdev, "dpsw_if_get_counter err %d\n" , err);
}
static bool dpaa2_switch_port_has_offload_stats(const struct net_device *netdev,
int attr_id)
{
return (attr_id == IFLA_OFFLOAD_XSTATS_CPU_HIT);
}
static int dpaa2_switch_port_get_offload_stats(int attr_id,
const struct net_device *netdev,
void *sp)
{
switch (attr_id) {
case IFLA_OFFLOAD_XSTATS_CPU_HIT:
dpaa2_switch_port_get_stats((struct net_device *)netdev, sp);
return 0;
}
return -EINVAL;
}
static int dpaa2_switch_port_change_mtu(struct net_device *netdev, int mtu)
{
struct ethsw_port_priv *port_priv = netdev_priv(netdev);
int err;
err = dpsw_if_set_max_frame_length(port_priv->ethsw_data->mc_io,
0,
port_priv->ethsw_data->dpsw_handle,
port_priv->idx,
(u16)ETHSW_L2_MAX_FRM(mtu));
if (err) {
netdev_err(netdev,
"dpsw_if_set_max_frame_length() err %d\n" , err);
return err;
}
WRITE_ONCE(netdev->mtu, mtu);
return 0;
}
static int dpaa2_switch_port_link_state_update(struct net_device *netdev)
{
struct ethsw_port_priv *port_priv = netdev_priv(netdev);
struct dpsw_link_state state;
int err;
/* When we manage the MAC/PHY using phylink there is no need
* to manually update the netif_carrier.
* We can avoid locking because we are called from the "link changed"
* IRQ handler, which is the same as the "endpoint changed" IRQ handler
* (the writer to port_priv->mac), so we cannot race with it.
*/
if (dpaa2_mac_is_type_phy(port_priv->mac))
return 0;
/* Interrupts are received even though no one issued an 'ifconfig up'
* on the switch interface. Ignore these link state update interrupts
*/
if (!netif_running(netdev))
return 0;
err = dpsw_if_get_link_state(port_priv->ethsw_data->mc_io, 0,
port_priv->ethsw_data->dpsw_handle,
port_priv->idx, &state);
if (err) {
netdev_err(netdev, "dpsw_if_get_link_state() err %d\n" , err);
return err;
}
WARN_ONCE(state.up > 1, "Garbage read into link_state" );
if (state.up != port_priv->link_state) {
if (state.up) {
netif_carrier_on(netdev);
netif_tx_start_all_queues(netdev);
} else {
netif_carrier_off(netdev);
netif_tx_stop_all_queues(netdev);
}
port_priv->link_state = state.up;
}
return 0;
}
/* Manage all NAPI instances for the control interface.
*
* We only have one RX queue and one Tx Conf queue for all
* switch ports. Therefore, we only need to enable the NAPI instance once, the
* first time one of the switch ports runs .dev_open().
*/
static void dpaa2_switch_enable_ctrl_if_napi(struct ethsw_core *ethsw)
{
int i;
/* Access to the ethsw->napi_users relies on the RTNL lock */
ASSERT_RTNL();
/* a new interface is using the NAPI instance */
ethsw->napi_users++;
/* if there is already a user of the instance, return */
if (ethsw->napi_users > 1)
return ;
for (i = 0; i < DPAA2_SWITCH_RX_NUM_FQS; i++)
napi_enable(ðsw->fq[i].napi);
}
static void dpaa2_switch_disable_ctrl_if_napi(struct ethsw_core *ethsw)
{
int i;
/* Access to the ethsw->napi_users relies on the RTNL lock */
ASSERT_RTNL();
/* If we are not the last interface using the NAPI, return */
ethsw->napi_users--;
if (ethsw->napi_users)
return ;
for (i = 0; i < DPAA2_SWITCH_RX_NUM_FQS; i++)
napi_disable(ðsw->fq[i].napi);
}
static int dpaa2_switch_port_open(struct net_device *netdev)
{
struct ethsw_port_priv *port_priv = netdev_priv(netdev);
struct ethsw_core *ethsw = port_priv->ethsw_data;
int err;
mutex_lock(&port_priv->mac_lock);
if (!dpaa2_switch_port_is_type_phy(port_priv)) {
/* Explicitly set carrier off, otherwise
* netif_carrier_ok() will return true and cause 'ip link show'
* to report the LOWER_UP flag, even though the link
* notification wasn't even received.
*/
netif_carrier_off(netdev);
}
err = dpsw_if_enable(port_priv->ethsw_data->mc_io, 0,
port_priv->ethsw_data->dpsw_handle,
port_priv->idx);
if (err) {
mutex_unlock(&port_priv->mac_lock);
netdev_err(netdev, "dpsw_if_enable err %d\n" , err);
return err;
}
dpaa2_switch_enable_ctrl_if_napi(ethsw);
if (dpaa2_switch_port_is_type_phy(port_priv))
dpaa2_mac_start(port_priv->mac);
mutex_unlock(&port_priv->mac_lock);
return 0;
}
static int dpaa2_switch_port_stop(struct net_device *netdev)
{
struct ethsw_port_priv *port_priv = netdev_priv(netdev);
struct ethsw_core *ethsw = port_priv->ethsw_data;
int err;
mutex_lock(&port_priv->mac_lock);
if (dpaa2_switch_port_is_type_phy(port_priv)) {
dpaa2_mac_stop(port_priv->mac);
} else {
netif_tx_stop_all_queues(netdev);
netif_carrier_off(netdev);
}
mutex_unlock(&port_priv->mac_lock);
err = dpsw_if_disable(port_priv->ethsw_data->mc_io, 0,
port_priv->ethsw_data->dpsw_handle,
port_priv->idx);
if (err) {
netdev_err(netdev, "dpsw_if_disable err %d\n" , err);
return err;
}
dpaa2_switch_disable_ctrl_if_napi(ethsw);
return 0;
}
static int dpaa2_switch_port_parent_id(struct net_device *dev,
struct netdev_phys_item_id *ppid)
{
struct ethsw_port_priv *port_priv = netdev_priv(dev);
ppid->id_len = 1;
ppid->id[0] = port_priv->ethsw_data->dev_id;
return 0;
}
static int dpaa2_switch_port_get_phys_name(struct net_device *netdev, char *name,
size_t len)
{
struct ethsw_port_priv *port_priv = netdev_priv(netdev);
int err;
err = snprintf(name, len, "p%d" , port_priv->idx);
if (err >= len)
return -EINVAL;
return 0;
}
struct ethsw_dump_ctx {
struct net_device *dev;
struct sk_buff *skb;
struct netlink_callback *cb;
int idx;
};
static int dpaa2_switch_fdb_dump_nl(struct fdb_dump_entry *entry,
struct ethsw_dump_ctx *dump)
{
struct ndo_fdb_dump_context *ctx = (void *)dump->cb->ctx;
int is_dynamic = entry->type & DPSW_FDB_ENTRY_DINAMIC;
u32 portid = NETLINK_CB(dump->cb->skb).portid;
u32 seq = dump->cb->nlh->nlmsg_seq;
struct nlmsghdr *nlh;
struct ndmsg *ndm;
if (dump->idx < ctx->fdb_idx)
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_dynamic ? NUD_REACHABLE : NUD_NOARP;
if (nla_put(dump->skb, NDA_LLADDR, ETH_ALEN, entry->mac_addr))
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 dpaa2_switch_port_fdb_valid_entry(struct fdb_dump_entry *entry,
struct ethsw_port_priv *port_priv)
{
int idx = port_priv->idx;
int valid;
if (entry->type & DPSW_FDB_ENTRY_TYPE_UNICAST)
valid = entry->if_info == port_priv->idx;
else
valid = entry->if_mask[idx / 8] & BIT(idx % 8);
return valid;
}
static int dpaa2_switch_fdb_iterate(struct ethsw_port_priv *port_priv,
dpaa2_switch_fdb_cb_t cb, void *data)
{
struct net_device *net_dev = port_priv->netdev;
struct ethsw_core *ethsw = port_priv->ethsw_data;
struct device *dev = net_dev->dev.parent;
struct fdb_dump_entry *fdb_entries;
struct fdb_dump_entry fdb_entry;
dma_addr_t fdb_dump_iova;
u16 num_fdb_entries;
u32 fdb_dump_size;
int err = 0, i;
u8 *dma_mem;
u16 fdb_id;
fdb_dump_size = ethsw->sw_attr.max_fdb_entries * sizeof (fdb_entry);
dma_mem = kzalloc(fdb_dump_size, GFP_KERNEL);
if (!dma_mem)
return -ENOMEM;
fdb_dump_iova = dma_map_single(dev, dma_mem, fdb_dump_size,
DMA_FROM_DEVICE);
if (dma_mapping_error(dev, fdb_dump_iova)) {
netdev_err(net_dev, "dma_map_single() failed\n" );
err = -ENOMEM;
goto err_map;
}
fdb_id = dpaa2_switch_port_get_fdb_id(port_priv);
err = dpsw_fdb_dump(ethsw->mc_io, 0, ethsw->dpsw_handle, fdb_id,
fdb_dump_iova, fdb_dump_size, &num_fdb_entries);
if (err) {
netdev_err(net_dev, "dpsw_fdb_dump() = %d\n" , err);
goto err_dump;
}
dma_unmap_single(dev, fdb_dump_iova, fdb_dump_size, DMA_FROM_DEVICE);
fdb_entries = (struct fdb_dump_entry *)dma_mem;
for (i = 0; i < num_fdb_entries; i++) {
fdb_entry = fdb_entries[i];
err = cb(port_priv, &fdb_entry, data);
if (err)
goto end;
}
end:
kfree(dma_mem);
return 0;
err_dump:
dma_unmap_single(dev, fdb_dump_iova, fdb_dump_size, DMA_TO_DEVICE);
err_map:
kfree(dma_mem);
return err;
}
static int dpaa2_switch_fdb_entry_dump(struct ethsw_port_priv *port_priv,
struct fdb_dump_entry *fdb_entry,
void *data)
{
if (!dpaa2_switch_port_fdb_valid_entry(fdb_entry, port_priv))
return 0;
return dpaa2_switch_fdb_dump_nl(fdb_entry, data);
}
static int dpaa2_switch_port_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb,
struct net_device *net_dev,
struct net_device *filter_dev, int *idx)
{
struct ethsw_port_priv *port_priv = netdev_priv(net_dev);
struct ethsw_dump_ctx dump = {
.dev = net_dev,
.skb = skb,
.cb = cb,
.idx = *idx,
};
int err;
err = dpaa2_switch_fdb_iterate(port_priv, dpaa2_switch_fdb_entry_dump, &dump);
*idx = dump.idx;
return err;
}
static int dpaa2_switch_fdb_entry_fast_age(struct ethsw_port_priv *port_priv,
struct fdb_dump_entry *fdb_entry,
void *data __always_unused)
{
if (!dpaa2_switch_port_fdb_valid_entry(fdb_entry, port_priv))
return 0;
if (!(fdb_entry->type & DPSW_FDB_ENTRY_TYPE_DYNAMIC))
return 0;
if (fdb_entry->type & DPSW_FDB_ENTRY_TYPE_UNICAST)
dpaa2_switch_port_fdb_del_uc(port_priv, fdb_entry->mac_addr);
else
dpaa2_switch_port_fdb_del_mc(port_priv, fdb_entry->mac_addr);
return 0;
}
static void dpaa2_switch_port_fast_age(struct ethsw_port_priv *port_priv)
{
dpaa2_switch_fdb_iterate(port_priv,
dpaa2_switch_fdb_entry_fast_age, NULL);
}
static int dpaa2_switch_port_vlan_add(struct net_device *netdev, __be16 proto,
u16 vid)
{
struct switchdev_obj_port_vlan vlan = {
.obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN,
.vid = vid,
.obj.orig_dev = netdev,
/* This API only allows programming tagged, non-PVID VIDs */
.flags = 0,
};
return dpaa2_switch_port_vlans_add(netdev, &vlan);
}
static int dpaa2_switch_port_vlan_kill(struct net_device *netdev, __be16 proto,
u16 vid)
{
struct switchdev_obj_port_vlan vlan = {
.obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN,
.vid = vid,
.obj.orig_dev = netdev,
/* This API only allows programming tagged, non-PVID VIDs */
.flags = 0,
};
return dpaa2_switch_port_vlans_del(netdev, &vlan);
}
static int dpaa2_switch_port_set_mac_addr(struct ethsw_port_priv *port_priv)
{
struct ethsw_core *ethsw = port_priv->ethsw_data;
struct net_device *net_dev = port_priv->netdev;
struct device *dev = net_dev->dev.parent;
u8 mac_addr[ETH_ALEN];
int err;
if (!(ethsw->features & ETHSW_FEATURE_MAC_ADDR))
return 0;
/* Get firmware address, if any */
err = dpsw_if_get_port_mac_addr(ethsw->mc_io, 0, ethsw->dpsw_handle,
port_priv->idx, mac_addr);
if (err) {
dev_err(dev, "dpsw_if_get_port_mac_addr() failed\n" );
return err;
}
/* First check if firmware has any address configured by bootloader */
if (!is_zero_ether_addr(mac_addr)) {
eth_hw_addr_set(net_dev, mac_addr);
} else {
/* No MAC address configured, fill in net_dev->dev_addr
* with a random one
*/
eth_hw_addr_random(net_dev);
dev_dbg_once(dev, "device(s) have all-zero hwaddr, replaced with random\n" );
/* Override NET_ADDR_RANDOM set by eth_hw_addr_random(); for all
* practical purposes, this will be our "permanent" mac address,
* at least until the next reboot. This move will also permit
* register_netdevice() to properly fill up net_dev->perm_addr.
*/
net_dev->addr_assign_type = NET_ADDR_PERM;
}
return 0;
}
static void dpaa2_switch_free_fd(const struct ethsw_core *ethsw,
const struct dpaa2_fd *fd)
{
struct device *dev = ethsw->dev;
unsigned char *buffer_start;
struct sk_buff **skbh, *skb;
dma_addr_t fd_addr;
fd_addr = dpaa2_fd_get_addr(fd);
skbh = dpaa2_iova_to_virt(ethsw->iommu_domain, fd_addr);
skb = *skbh;
buffer_start = (unsigned char *)skbh;
dma_unmap_single(dev, fd_addr,
skb_tail_pointer(skb) - buffer_start,
DMA_TO_DEVICE);
/* Move on with skb release */
dev_kfree_skb(skb);
}
static int dpaa2_switch_build_single_fd(struct ethsw_core *ethsw,
struct sk_buff *skb,
struct dpaa2_fd *fd)
{
struct device *dev = ethsw->dev;
struct sk_buff **skbh;
dma_addr_t addr;
u8 *buff_start;
void *hwa;
buff_start = PTR_ALIGN(skb->data - DPAA2_SWITCH_TX_DATA_OFFSET -
DPAA2_SWITCH_TX_BUF_ALIGN,
DPAA2_SWITCH_TX_BUF_ALIGN);
/* Clear FAS to have consistent values for TX confirmation. It is
* located in the first 8 bytes of the buffer's hardware annotation
* area
*/
hwa = buff_start + DPAA2_SWITCH_SWA_SIZE;
memset(hwa, 0, 8);
/* Store a backpointer to the skb at the beginning of the buffer
* (in the private data area) such that we can release it
* on Tx confirm
*/
skbh = (struct sk_buff **)buff_start;
*skbh = skb;
addr = dma_map_single(dev, buff_start,
skb_tail_pointer(skb) - buff_start,
DMA_TO_DEVICE);
if (unlikely(dma_mapping_error(dev, addr)))
return -ENOMEM;
/* Setup the FD fields */
memset(fd, 0, sizeof (*fd));
dpaa2_fd_set_addr(fd, addr);
dpaa2_fd_set_offset(fd, (u16)(skb->data - buff_start));
dpaa2_fd_set_len(fd, skb->len);
dpaa2_fd_set_format(fd, dpaa2_fd_single);
return 0;
}
static netdev_tx_t dpaa2_switch_port_tx(struct sk_buff *skb,
struct net_device *net_dev)
{
struct ethsw_port_priv *port_priv = netdev_priv(net_dev);
struct ethsw_core *ethsw = port_priv->ethsw_data;
int retries = DPAA2_SWITCH_SWP_BUSY_RETRIES;
struct dpaa2_fd fd;
int err;
if (unlikely(skb_headroom(skb) < DPAA2_SWITCH_NEEDED_HEADROOM)) {
struct sk_buff *ns;
ns = skb_realloc_headroom(skb, DPAA2_SWITCH_NEEDED_HEADROOM);
if (unlikely(!ns)) {
net_err_ratelimited("%s: Error reallocating skb headroom\n" , net_dev->name);
goto err_free_skb;
}
dev_consume_skb_any(skb);
skb = ns;
}
/* We'll be holding a back-reference to the skb until Tx confirmation */
skb = skb_unshare(skb, GFP_ATOMIC);
if (unlikely(!skb)) {
/* skb_unshare() has already freed the skb */
net_err_ratelimited("%s: Error copying the socket buffer\n" , net_dev->name);
goto err_exit;
}
/* At this stage, we do not support non-linear skbs so just try to
* linearize the skb and if that's not working, just drop the packet.
*/
err = skb_linearize(skb);
if (err) {
net_err_ratelimited("%s: skb_linearize error (%d)!\n" , net_dev->name, err);
goto err_free_skb;
}
err = dpaa2_switch_build_single_fd(ethsw, skb, &fd);
if (unlikely(err)) {
net_err_ratelimited("%s: ethsw_build_*_fd() %d\n" , net_dev->name, err);
goto err_free_skb;
}
do {
err = dpaa2_io_service_enqueue_qd(NULL,
port_priv->tx_qdid,
8, 0, &fd);
retries--;
} while (err == -EBUSY && retries);
if (unlikely(err < 0)) {
dpaa2_switch_free_fd(ethsw, &fd);
goto err_exit;
}
return NETDEV_TX_OK;
err_free_skb:
dev_kfree_skb(skb);
err_exit:
return NETDEV_TX_OK;
}
static int
dpaa2_switch_setup_tc_cls_flower(struct dpaa2_switch_filter_block *filter_block,
struct flow_cls_offload *f)
{
switch (f->command) {
case FLOW_CLS_REPLACE:
return dpaa2_switch_cls_flower_replace(filter_block, f);
case FLOW_CLS_DESTROY:
return dpaa2_switch_cls_flower_destroy(filter_block, f);
default :
return -EOPNOTSUPP;
}
}
static int
dpaa2_switch_setup_tc_cls_matchall(struct dpaa2_switch_filter_block *block,
struct tc_cls_matchall_offload *f)
{
switch (f->command) {
case TC_CLSMATCHALL_REPLACE:
return dpaa2_switch_cls_matchall_replace(block, f);
case TC_CLSMATCHALL_DESTROY:
return dpaa2_switch_cls_matchall_destroy(block, f);
default :
return -EOPNOTSUPP;
}
}
static int dpaa2_switch_port_setup_tc_block_cb_ig(enum tc_setup_type type,
void *type_data,
void *cb_priv)
{
switch (type) {
case TC_SETUP_CLSFLOWER:
return dpaa2_switch_setup_tc_cls_flower(cb_priv, type_data);
case TC_SETUP_CLSMATCHALL:
return dpaa2_switch_setup_tc_cls_matchall(cb_priv, type_data);
default :
return -EOPNOTSUPP;
}
}
static LIST_HEAD(dpaa2_switch_block_cb_list);
static int
dpaa2_switch_port_acl_tbl_bind(struct ethsw_port_priv *port_priv,
struct dpaa2_switch_filter_block *block)
{
struct ethsw_core *ethsw = port_priv->ethsw_data;
struct net_device *netdev = port_priv->netdev;
struct dpsw_acl_if_cfg acl_if_cfg;
int err;
if (port_priv->filter_block)
return -EINVAL;
acl_if_cfg.if_id[0] = port_priv->idx;
acl_if_cfg.num_ifs = 1;
err = dpsw_acl_add_if(ethsw->mc_io, 0, ethsw->dpsw_handle,
block->acl_id, &acl_if_cfg);
if (err) {
netdev_err(netdev, "dpsw_acl_add_if err %d\n" , err);
return err;
}
block->ports |= BIT(port_priv->idx);
port_priv->filter_block = block;
return 0;
}
static int
dpaa2_switch_port_acl_tbl_unbind(struct ethsw_port_priv *port_priv,
struct dpaa2_switch_filter_block *block)
{
struct ethsw_core *ethsw = port_priv->ethsw_data;
struct net_device *netdev = port_priv->netdev;
struct dpsw_acl_if_cfg acl_if_cfg;
int err;
if (port_priv->filter_block != block)
return -EINVAL;
acl_if_cfg.if_id[0] = port_priv->idx;
acl_if_cfg.num_ifs = 1;
err = dpsw_acl_remove_if(ethsw->mc_io, 0, ethsw->dpsw_handle,
block->acl_id, &acl_if_cfg);
if (err) {
netdev_err(netdev, "dpsw_acl_add_if err %d\n" , err);
return err;
}
block->ports &= ~BIT(port_priv->idx);
port_priv->filter_block = NULL;
return 0;
}
static int dpaa2_switch_port_block_bind(struct ethsw_port_priv *port_priv,
struct dpaa2_switch_filter_block *block)
{
struct dpaa2_switch_filter_block *old_block = port_priv->filter_block;
int err;
/* Offload all the mirror entries found in the block on this new port
* joining it.
*/
err = dpaa2_switch_block_offload_mirror(block, port_priv);
if (err)
return err;
/* If the port is already bound to this ACL table then do nothing. This
* can happen when this port is the first one to join a tc block
*/
if (port_priv->filter_block == block)
return 0;
err = dpaa2_switch_port_acl_tbl_unbind(port_priv, old_block);
if (err)
return err;
/* Mark the previous ACL table as being unused if this was the last
* port that was using it.
*/
if (old_block->ports == 0)
old_block->in_use = false ;
return dpaa2_switch_port_acl_tbl_bind(port_priv, block);
}
static int
dpaa2_switch_port_block_unbind(struct ethsw_port_priv *port_priv,
struct dpaa2_switch_filter_block *block)
{
struct ethsw_core *ethsw = port_priv->ethsw_data;
struct dpaa2_switch_filter_block *new_block;
int err;
/* Unoffload all the mirror entries found in the block from the
* port leaving it.
*/
err = dpaa2_switch_block_unoffload_mirror(block, port_priv);
if (err)
return err;
/* We are the last port that leaves a block (an ACL table).
* We'll continue to use this table.
*/
if (block->ports == BIT(port_priv->idx))
return 0;
err = dpaa2_switch_port_acl_tbl_unbind(port_priv, block);
if (err)
return err;
if (block->ports == 0)
block->in_use = false ;
new_block = dpaa2_switch_filter_block_get_unused(ethsw);
new_block->in_use = true ;
return dpaa2_switch_port_acl_tbl_bind(port_priv, new_block);
}
static int dpaa2_switch_setup_tc_block_bind(struct net_device *netdev,
struct flow_block_offload *f)
{
struct ethsw_port_priv *port_priv = netdev_priv(netdev);
struct ethsw_core *ethsw = port_priv->ethsw_data;
struct dpaa2_switch_filter_block *filter_block;
struct flow_block_cb *block_cb;
bool register_block = false ;
int err;
block_cb = flow_block_cb_lookup(f->block,
dpaa2_switch_port_setup_tc_block_cb_ig,
ethsw);
if (!block_cb) {
/* If the filter block is not already known, then this port
* must be the first to join it. In this case, we can just
* continue to use our private table
*/
filter_block = port_priv->filter_block;
block_cb = flow_block_cb_alloc(dpaa2_switch_port_setup_tc_block_cb_ig,
ethsw, filter_block, NULL);
if (IS_ERR(block_cb))
return PTR_ERR(block_cb);
register_block = true ;
} else {
filter_block = flow_block_cb_priv(block_cb);
}
flow_block_cb_incref(block_cb);
err = dpaa2_switch_port_block_bind(port_priv, filter_block);
if (err)
goto err_block_bind;
if (register_block) {
flow_block_cb_add(block_cb, f);
list_add_tail(&block_cb->driver_list,
&dpaa2_switch_block_cb_list);
}
return 0;
err_block_bind:
if (!flow_block_cb_decref(block_cb))
flow_block_cb_free(block_cb);
return err;
}
static void dpaa2_switch_setup_tc_block_unbind(struct net_device *netdev,
struct flow_block_offload *f)
{
struct ethsw_port_priv *port_priv = netdev_priv(netdev);
struct ethsw_core *ethsw = port_priv->ethsw_data;
struct dpaa2_switch_filter_block *filter_block;
struct flow_block_cb *block_cb;
int err;
block_cb = flow_block_cb_lookup(f->block,
dpaa2_switch_port_setup_tc_block_cb_ig,
ethsw);
if (!block_cb)
return ;
filter_block = flow_block_cb_priv(block_cb);
err = dpaa2_switch_port_block_unbind(port_priv, filter_block);
if (!err && !flow_block_cb_decref(block_cb)) {
flow_block_cb_remove(block_cb, f);
list_del(&block_cb->driver_list);
}
}
static int dpaa2_switch_setup_tc_block(struct net_device *netdev,
struct flow_block_offload *f)
{
if (f->binder_type != FLOW_BLOCK_BINDER_TYPE_CLSACT_INGRESS)
return -EOPNOTSUPP;
f->driver_block_list = &dpaa2_switch_block_cb_list;
switch (f->command) {
case FLOW_BLOCK_BIND:
return dpaa2_switch_setup_tc_block_bind(netdev, f);
case FLOW_BLOCK_UNBIND:
dpaa2_switch_setup_tc_block_unbind(netdev, f);
return 0;
default :
return -EOPNOTSUPP;
}
}
static int dpaa2_switch_port_setup_tc(struct net_device *netdev,
enum tc_setup_type type,
void *type_data)
{
switch (type) {
case TC_SETUP_BLOCK: {
return dpaa2_switch_setup_tc_block(netdev, type_data);
}
default :
return -EOPNOTSUPP;
}
return 0;
}
static const struct net_device_ops dpaa2_switch_port_ops = {
.ndo_open = dpaa2_switch_port_open,
.ndo_stop = dpaa2_switch_port_stop,
.ndo_set_mac_address = eth_mac_addr,
.ndo_get_stats64 = dpaa2_switch_port_get_stats,
.ndo_change_mtu = dpaa2_switch_port_change_mtu,
.ndo_has_offload_stats = dpaa2_switch_port_has_offload_stats,
.ndo_get_offload_stats = dpaa2_switch_port_get_offload_stats,
.ndo_fdb_dump = dpaa2_switch_port_fdb_dump,
.ndo_vlan_rx_add_vid = dpaa2_switch_port_vlan_add,
.ndo_vlan_rx_kill_vid = dpaa2_switch_port_vlan_kill,
.ndo_start_xmit = dpaa2_switch_port_tx,
.ndo_get_port_parent_id = dpaa2_switch_port_parent_id,
.ndo_get_phys_port_name = dpaa2_switch_port_get_phys_name,
.ndo_setup_tc = dpaa2_switch_port_setup_tc,
};
bool dpaa2_switch_port_dev_check(const struct net_device *netdev)
{
return netdev->netdev_ops == &dpaa2_switch_port_ops;
}
static int dpaa2_switch_port_connect_mac(struct ethsw_port_priv *port_priv)
{
struct fsl_mc_device *dpsw_port_dev, *dpmac_dev;
struct dpaa2_mac *mac;
int err;
dpsw_port_dev = to_fsl_mc_device(port_priv->netdev->dev.parent);
dpmac_dev = fsl_mc_get_endpoint(dpsw_port_dev, port_priv->idx);
if (PTR_ERR(dpmac_dev) == -EPROBE_DEFER)
return PTR_ERR(dpmac_dev);
if (IS_ERR(dpmac_dev))
return 0;
if (dpmac_dev->dev.type != &fsl_mc_bus_dpmac_type) {
err = 0;
goto out_put_device;
}
mac = kzalloc(sizeof (*mac), GFP_KERNEL);
if (!mac) {
err = -ENOMEM;
goto out_put_device;
}
mac->mc_dev = dpmac_dev;
mac->mc_io = port_priv->ethsw_data->mc_io;
mac->net_dev = port_priv->netdev;
err = dpaa2_mac_open(mac);
if (err)
goto err_free_mac;
if (dpaa2_mac_is_type_phy(mac)) {
err = dpaa2_mac_connect(mac);
if (err) {
netdev_err(port_priv->netdev,
"Error connecting to the MAC endpoint %pe\n" ,
ERR_PTR(err));
goto err_close_mac;
}
}
mutex_lock(&port_priv->mac_lock);
port_priv->mac = mac;
mutex_unlock(&port_priv->mac_lock);
return 0;
err_close_mac:
dpaa2_mac_close(mac);
err_free_mac:
kfree(mac);
out_put_device:
put_device(&dpmac_dev->dev);
return err;
}
static void dpaa2_switch_port_disconnect_mac(struct ethsw_port_priv *port_priv)
{
struct dpaa2_mac *mac;
mutex_lock(&port_priv->mac_lock);
mac = port_priv->mac;
port_priv->mac = NULL;
mutex_unlock(&port_priv->mac_lock);
if (!mac)
return ;
if (dpaa2_mac_is_type_phy(mac))
dpaa2_mac_disconnect(mac);
dpaa2_mac_close(mac);
kfree(mac);
}
static irqreturn_t dpaa2_switch_irq0_handler_thread(int irq_num, void *arg)
{
struct device *dev = (struct device *)arg;
struct ethsw_core *ethsw = dev_get_drvdata(dev);
struct ethsw_port_priv *port_priv;
int err, if_id;
bool had_mac;
u32 status;
err = dpsw_get_irq_status(ethsw->mc_io, 0, ethsw->dpsw_handle,
DPSW_IRQ_INDEX_IF, &status);
if (err) {
dev_err(dev, "Can't get irq status (err %d)\n" , err);
goto out;
}
if_id = (status & 0xFFFF0000) >> 16;
port_priv = ethsw->ports[if_id];
if (status & DPSW_IRQ_EVENT_LINK_CHANGED)
dpaa2_switch_port_link_state_update(port_priv->netdev);
if (status & DPSW_IRQ_EVENT_ENDPOINT_CHANGED) {
dpaa2_switch_port_set_mac_addr(port_priv);
/* We can avoid locking because the "endpoint changed" IRQ
* handler is the only one who changes priv->mac at runtime,
* so we are not racing with anyone.
*/
had_mac = !!port_priv->mac;
if (had_mac)
dpaa2_switch_port_disconnect_mac(port_priv);
else
dpaa2_switch_port_connect_mac(port_priv);
}
err = dpsw_clear_irq_status(ethsw->mc_io, 0, ethsw->dpsw_handle,
DPSW_IRQ_INDEX_IF, status);
if (err)
dev_err(dev, "Can't clear irq status (err %d)\n" , err);
out:
return IRQ_HANDLED;
}
static int dpaa2_switch_setup_irqs(struct fsl_mc_device *sw_dev)
{
u32 mask = DPSW_IRQ_EVENT_LINK_CHANGED | DPSW_IRQ_EVENT_ENDPOINT_CHANGED;
struct device *dev = &sw_dev->dev;
struct ethsw_core *ethsw = dev_get_drvdata(dev);
struct fsl_mc_device_irq *irq;
int err;
err = fsl_mc_allocate_irqs(sw_dev);
if (err) {
dev_err(dev, "MC irqs allocation failed\n" );
return err;
}
if (WARN_ON(sw_dev->obj_desc.irq_count != DPSW_IRQ_NUM)) {
err = -EINVAL;
goto free_irq;
}
err = dpsw_set_irq_enable(ethsw->mc_io, 0, ethsw->dpsw_handle,
DPSW_IRQ_INDEX_IF, 0);
if (err) {
dev_err(dev, "dpsw_set_irq_enable err %d\n" , err);
goto free_irq;
}
irq = sw_dev->irqs[DPSW_IRQ_INDEX_IF];
err = devm_request_threaded_irq(dev, irq->virq, NULL,
dpaa2_switch_irq0_handler_thread,
IRQF_NO_SUSPEND | IRQF_ONESHOT,
dev_name(dev), dev);
if (err) {
dev_err(dev, "devm_request_threaded_irq(): %d\n" , err);
goto free_irq;
}
err = dpsw_set_irq_mask(ethsw->mc_io, 0, ethsw->dpsw_handle,
DPSW_IRQ_INDEX_IF, mask);
if (err) {
dev_err(dev, "dpsw_set_irq_mask(): %d\n" , err);
goto free_devm_irq;
}
err = dpsw_set_irq_enable(ethsw->mc_io, 0, ethsw->dpsw_handle,
DPSW_IRQ_INDEX_IF, 1);
if (err) {
dev_err(dev, "dpsw_set_irq_enable(): %d\n" , err);
goto free_devm_irq;
}
return 0;
free_devm_irq:
devm_free_irq(dev, irq->virq, dev);
free_irq:
fsl_mc_free_irqs(sw_dev);
return err;
}
static void dpaa2_switch_teardown_irqs(struct fsl_mc_device *sw_dev)
{
struct device *dev = &sw_dev->dev;
struct ethsw_core *ethsw = dev_get_drvdata(dev);
int err;
err = dpsw_set_irq_enable(ethsw->mc_io, 0, ethsw->dpsw_handle,
DPSW_IRQ_INDEX_IF, 0);
if (err)
dev_err(dev, "dpsw_set_irq_enable err %d\n" , err);
fsl_mc_free_irqs(sw_dev);
}
static int dpaa2_switch_port_set_learning(struct ethsw_port_priv *port_priv, bool enable)
{
struct ethsw_core *ethsw = port_priv->ethsw_data;
enum dpsw_learning_mode learn_mode;
int err;
if (enable)
learn_mode = DPSW_LEARNING_MODE_HW;
else
learn_mode = DPSW_LEARNING_MODE_DIS;
err = dpsw_if_set_learning_mode(ethsw->mc_io, 0, ethsw->dpsw_handle,
port_priv->idx, learn_mode);
if (err)
netdev_err(port_priv->netdev, "dpsw_if_set_learning_mode err %d\n" , err);
if (!enable)
dpaa2_switch_port_fast_age(port_priv);
return err;
}
static int dpaa2_switch_port_attr_stp_state_set(struct net_device *netdev,
u8 state)
{
struct ethsw_port_priv *port_priv = netdev_priv(netdev);
int err;
err = dpaa2_switch_port_set_stp_state(port_priv, state);
if (err)
return err;
switch (state) {
case BR_STATE_DISABLED:
case BR_STATE_BLOCKING:
case BR_STATE_LISTENING:
err = dpaa2_switch_port_set_learning(port_priv, false );
break ;
case BR_STATE_LEARNING:
case BR_STATE_FORWARDING:
err = dpaa2_switch_port_set_learning(port_priv,
port_priv->learn_ena);
break ;
}
return err;
}
static int dpaa2_switch_port_flood(struct ethsw_port_priv *port_priv,
struct switchdev_brport_flags flags)
{
struct ethsw_core *ethsw = port_priv->ethsw_data;
if (flags.mask & BR_BCAST_FLOOD)
port_priv->bcast_flood = !!(flags.val & BR_BCAST_FLOOD);
if (flags.mask & BR_FLOOD)
port_priv->ucast_flood = !!(flags.val & BR_FLOOD);
return dpaa2_switch_fdb_set_egress_flood(ethsw, port_priv->fdb->fdb_id);
}
static int dpaa2_switch_port_pre_bridge_flags(struct net_device *netdev,
struct switchdev_brport_flags flags,
struct netlink_ext_ack *extack)
{
if (flags.mask & ~(BR_LEARNING | BR_BCAST_FLOOD | BR_FLOOD |
BR_MCAST_FLOOD))
return -EINVAL;
if (flags.mask & (BR_FLOOD | BR_MCAST_FLOOD)) {
bool multicast = !!(flags.val & BR_MCAST_FLOOD);
bool unicast = !!(flags.val & BR_FLOOD);
if (unicast != multicast) {
NL_SET_ERR_MSG_MOD(extack,
"Cannot configure multicast flooding independently of unicast" );
return -EINVAL;
}
}
return 0;
}
static int dpaa2_switch_port_bridge_flags(struct net_device *netdev,
struct switchdev_brport_flags flags,
struct netlink_ext_ack *extack)
{
struct ethsw_port_priv *port_priv = netdev_priv(netdev);
int err;
if (flags.mask & BR_LEARNING) {
bool learn_ena = !!(flags.val & BR_LEARNING);
err = dpaa2_switch_port_set_learning(port_priv, learn_ena);
if (err)
return err;
port_priv->learn_ena = learn_ena;
}
if (flags.mask & (BR_BCAST_FLOOD | BR_FLOOD | BR_MCAST_FLOOD)) {
err = dpaa2_switch_port_flood(port_priv, flags);
if (err)
return err;
}
return 0;
}
static int dpaa2_switch_port_attr_set(struct net_device *netdev, const void *ctx,
const struct switchdev_attr *attr,
struct netlink_ext_ack *extack)
{
int err = 0;
switch (attr->id) {
case SWITCHDEV_ATTR_ID_PORT_STP_STATE:
err = dpaa2_switch_port_attr_stp_state_set(netdev,
attr->u.stp_state);
break ;
case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING:
if (!attr->u.vlan_filtering) {
NL_SET_ERR_MSG_MOD(extack,
"The DPAA2 switch does not support VLAN-unaware operation" );
return -EOPNOTSUPP;
}
break ;
case SWITCHDEV_ATTR_ID_PORT_PRE_BRIDGE_FLAGS:
err = dpaa2_switch_port_pre_bridge_flags(netdev, attr->u.brport_flags, extack);
break ;
case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS:
err = dpaa2_switch_port_bridge_flags(netdev, attr->u.brport_flags, extack);
break ;
default :
err = -EOPNOTSUPP;
break ;
}
return err;
}
int dpaa2_switch_port_vlans_add(struct net_device *netdev,
const struct switchdev_obj_port_vlan *vlan)
{
struct ethsw_port_priv *port_priv = netdev_priv(netdev);
struct ethsw_core *ethsw = port_priv->ethsw_data;
struct dpsw_attr *attr = ðsw->sw_attr;
int err = 0;
/* Make sure that the VLAN is not already configured
* on the switch port
*/
if (port_priv->vlans[vlan->vid] & ETHSW_VLAN_MEMBER) {
netdev_err(netdev, "VLAN %d already configured\n" , vlan->vid);
return -EEXIST;
}
/* Check if there is space for a new VLAN */
err = dpsw_get_attributes(ethsw->mc_io, 0, ethsw->dpsw_handle,
ðsw->sw_attr);
if (err) {
netdev_err(netdev, "dpsw_get_attributes err %d\n" , err);
return err;
}
if (attr->max_vlans - attr->num_vlans < 1)
return -ENOSPC;
/* Check if there is space for a new VLAN */
err = dpsw_get_attributes(ethsw->mc_io, 0, ethsw->dpsw_handle,
ðsw->sw_attr);
if (err) {
netdev_err(netdev, "dpsw_get_attributes err %d\n" , err);
return err;
}
if (attr->max_vlans - attr->num_vlans < 1)
return -ENOSPC;
if (!port_priv->ethsw_data->vlans[vlan->vid]) {
/* this is a new VLAN */
err = dpaa2_switch_add_vlan(port_priv, vlan->vid);
if (err)
return err;
port_priv->ethsw_data->vlans[vlan->vid] |= ETHSW_VLAN_GLOBAL;
}
return dpaa2_switch_port_add_vlan(port_priv, vlan->vid, vlan->flags);
}
static int dpaa2_switch_port_lookup_address(struct net_device *netdev, int is_uc,
const unsigned char *addr)
{
struct netdev_hw_addr_list *list = (is_uc) ? &netdev->uc : &netdev->mc;
struct netdev_hw_addr *ha;
netif_addr_lock_bh(netdev);
list_for_each_entry(ha, &list->list, list) {
if (ether_addr_equal(ha->addr, addr)) {
netif_addr_unlock_bh(netdev);
return 1;
}
}
netif_addr_unlock_bh(netdev);
return 0;
}
static int dpaa2_switch_port_mdb_add(struct net_device *netdev,
const struct switchdev_obj_port_mdb *mdb)
{
struct ethsw_port_priv *port_priv = netdev_priv(netdev);
int err;
/* Check if address is already set on this port */
if (dpaa2_switch_port_lookup_address(netdev, 0, mdb->addr))
return -EEXIST;
err = dpaa2_switch_port_fdb_add_mc(port_priv, mdb->addr);
if (err)
return err;
err = dev_mc_add(netdev, mdb->addr);
if (err) {
netdev_err(netdev, "dev_mc_add err %d\n" , err);
dpaa2_switch_port_fdb_del_mc(port_priv, mdb->addr);
}
return err;
}
static int dpaa2_switch_port_obj_add(struct net_device *netdev,
const struct switchdev_obj *obj)
{
int err;
switch (obj->id) {
case SWITCHDEV_OBJ_ID_PORT_VLAN:
err = dpaa2_switch_port_vlans_add(netdev,
SWITCHDEV_OBJ_PORT_VLAN(obj));
break ;
case SWITCHDEV_OBJ_ID_PORT_MDB:
err = dpaa2_switch_port_mdb_add(netdev,
SWITCHDEV_OBJ_PORT_MDB(obj));
break ;
default :
err = -EOPNOTSUPP;
break ;
}
return err;
}
static int dpaa2_switch_port_del_vlan(struct ethsw_port_priv *port_priv, u16 vid)
{
struct ethsw_core *ethsw = port_priv->ethsw_data;
struct net_device *netdev = port_priv->netdev;
struct dpsw_vlan_if_cfg vcfg;
int i, err;
if (!port_priv->vlans[vid])
return -ENOENT;
if (port_priv->vlans[vid] & ETHSW_VLAN_PVID) {
/* If we are deleting the PVID of a port, use VLAN 4095 instead
* as we are sure that neither the bridge nor the 8021q module
* will use it
*/
err = dpaa2_switch_port_set_pvid(port_priv, 4095);
if (err)
return err;
}
vcfg.num_ifs = 1;
vcfg.if_id[0] = port_priv->idx;
if (port_priv->vlans[vid] & ETHSW_VLAN_UNTAGGED) {
err = dpsw_vlan_remove_if_untagged(ethsw->mc_io, 0,
ethsw->dpsw_handle,
vid, &vcfg);
if (err) {
netdev_err(netdev,
"dpsw_vlan_remove_if_untagged err %d\n" ,
err);
}
port_priv->vlans[vid] &= ~ETHSW_VLAN_UNTAGGED;
}
if (port_priv->vlans[vid] & ETHSW_VLAN_MEMBER) {
err = dpsw_vlan_remove_if(ethsw->mc_io, 0, ethsw->dpsw_handle,
vid, &vcfg);
if (err) {
netdev_err(netdev,
"dpsw_vlan_remove_if err %d\n" , err);
return err;
}
port_priv->vlans[vid] &= ~ETHSW_VLAN_MEMBER;
/* Delete VLAN from switch if it is no longer configured on
* any port
*/
for (i = 0; i < ethsw->sw_attr.num_ifs; i++) {
if (ethsw->ports[i] &&
ethsw->ports[i]->vlans[vid] & ETHSW_VLAN_MEMBER)
return 0; /* Found a port member in VID */
}
ethsw->vlans[vid] &= ~ETHSW_VLAN_GLOBAL;
err = dpaa2_switch_dellink(ethsw, vid);
if (err)
return err;
}
return 0;
}
int dpaa2_switch_port_vlans_del(struct net_device *netdev,
const struct switchdev_obj_port_vlan *vlan)
{
struct ethsw_port_priv *port_priv = netdev_priv(netdev);
if (netif_is_bridge_master(vlan->obj.orig_dev))
return -EOPNOTSUPP;
return dpaa2_switch_port_del_vlan(port_priv, vlan->vid);
}
static int dpaa2_switch_port_mdb_del(struct net_device *netdev,
const struct switchdev_obj_port_mdb *mdb)
{
struct ethsw_port_priv *port_priv = netdev_priv(netdev);
int err;
if (!dpaa2_switch_port_lookup_address(netdev, 0, mdb->addr))
return -ENOENT;
err = dpaa2_switch_port_fdb_del_mc(port_priv, mdb->addr);
if (err)
return err;
err = dev_mc_del(netdev, mdb->addr);
if (err) {
netdev_err(netdev, "dev_mc_del err %d\n" , err);
return err;
}
return err;
}
static int dpaa2_switch_port_obj_del(struct net_device *netdev,
const struct switchdev_obj *obj)
{
int err;
switch (obj->id) {
case SWITCHDEV_OBJ_ID_PORT_VLAN:
err = dpaa2_switch_port_vlans_del(netdev, SWITCHDEV_OBJ_PORT_VLAN(obj));
break ;
case SWITCHDEV_OBJ_ID_PORT_MDB:
err = dpaa2_switch_port_mdb_del(netdev, SWITCHDEV_OBJ_PORT_MDB(obj));
break ;
default :
err = -EOPNOTSUPP;
break ;
}
return err;
}
static int dpaa2_switch_port_attr_set_event(struct net_device *netdev,
struct switchdev_notifier_port_attr_info *ptr)
{
int err;
err = switchdev_handle_port_attr_set(netdev, ptr,
dpaa2_switch_port_dev_check,
dpaa2_switch_port_attr_set);
return notifier_from_errno(err);
}
static int dpaa2_switch_port_bridge_join(struct net_device *netdev,
struct net_device *upper_dev,
struct netlink_ext_ack *extack)
{
struct ethsw_port_priv *port_priv = netdev_priv(netdev);
struct dpaa2_switch_fdb *old_fdb = port_priv->fdb;
struct ethsw_core *ethsw = port_priv->ethsw_data;
bool learn_ena;
int err;
/* Delete the previously manually installed VLAN 1 */
err = dpaa2_switch_port_del_vlan(port_priv, 1);
if (err)
return err;
dpaa2_switch_port_set_fdb(port_priv, upper_dev);
/* Inherit the initial bridge port learning state */
learn_ena = br_port_flag_is_set(netdev, BR_LEARNING);
err = dpaa2_switch_port_set_learning(port_priv, learn_ena);
port_priv->learn_ena = learn_ena;
/* Setup the egress flood policy (broadcast, unknown unicast) */
err = dpaa2_switch_fdb_set_egress_flood(ethsw, port_priv->fdb->fdb_id);
if (err)
goto err_egress_flood;
/* Recreate the egress flood domain of the FDB that we just left. */
err = dpaa2_switch_fdb_set_egress_flood(ethsw, old_fdb->fdb_id);
if (err)
goto err_egress_flood;
err = switchdev_bridge_port_offload(netdev, netdev, NULL,
NULL, NULL, false , extack);
if (err)
goto err_switchdev_offload;
return 0;
err_switchdev_offload:
err_egress_flood:
dpaa2_switch_port_set_fdb(port_priv, NULL);
return err;
}
static int dpaa2_switch_port_clear_rxvlan(struct net_device *vdev, int vid, void *arg)
{
__be16 vlan_proto = htons(ETH_P_8021Q);
if (vdev)
vlan_proto = vlan_dev_vlan_proto(vdev);
return dpaa2_switch_port_vlan_kill(arg, vlan_proto, vid);
}
static int dpaa2_switch_port_restore_rxvlan(struct net_device *vdev, int vid, void *arg)
{
__be16 vlan_proto = htons(ETH_P_8021Q);
if (vdev)
vlan_proto = vlan_dev_vlan_proto(vdev);
return dpaa2_switch_port_vlan_add(arg, vlan_proto, vid);
}
static void dpaa2_switch_port_pre_bridge_leave(struct net_device *netdev)
{
switchdev_bridge_port_unoffload(netdev, NULL, NULL, NULL);
}
static int dpaa2_switch_port_bridge_leave(struct net_device *netdev)
{
struct ethsw_port_priv *port_priv = netdev_priv(netdev);
struct dpaa2_switch_fdb *old_fdb = port_priv->fdb;
struct ethsw_core *ethsw = port_priv->ethsw_data;
int err;
/* First of all, fast age any learn FDB addresses on this switch port */
dpaa2_switch_port_fast_age(port_priv);
/* Clear all RX VLANs installed through vlan_vid_add() either as VLAN
* upper devices or otherwise from the FDB table that we are about to
* leave
*/
err = vlan_for_each(netdev, dpaa2_switch_port_clear_rxvlan, netdev);
if (err)
netdev_err(netdev, "Unable to clear RX VLANs from old FDB table, err (%d)\n" , err);
dpaa2_switch_port_set_fdb(port_priv, NULL);
/* Restore all RX VLANs into the new FDB table that we just joined */
err = vlan_for_each(netdev, dpaa2_switch_port_restore_rxvlan, netdev);
if (err)
netdev_err(netdev, "Unable to restore RX VLANs to the new FDB, err (%d)\n" , err);
/* Reset the flooding state to denote that this port can send any
* packet in standalone mode. With this, we are also ensuring that any
* later bridge join will have the flooding flag on.
*/
port_priv->bcast_flood = true ;
port_priv->ucast_flood = true ;
/* Setup the egress flood policy (broadcast, unknown unicast).
* When the port is not under a bridge, only the CTRL interface is part
* of the flooding domain besides the actual port
*/
err = dpaa2_switch_fdb_set_egress_flood(ethsw, port_priv->fdb->fdb_id);
if (err)
return err;
/* Recreate the egress flood domain of the FDB that we just left */
err = dpaa2_switch_fdb_set_egress_flood(ethsw, old_fdb->fdb_id);
if (err)
return err;
/* No HW learning when not under a bridge */
err = dpaa2_switch_port_set_learning(port_priv, false );
if (err)
return err;
port_priv->learn_ena = false ;
/* Add the VLAN 1 as PVID when not under a bridge. We need this since
* the dpaa2 switch interfaces are not capable to be VLAN unaware
*/
return dpaa2_switch_port_add_vlan(port_priv, DEFAULT_VLAN_ID,
BRIDGE_VLAN_INFO_UNTAGGED | BRIDGE_VLAN_INFO_PVID);
}
static int dpaa2_switch_prevent_bridging_with_8021q_upper(struct net_device *netdev)
{
struct net_device *upper_dev;
struct list_head *iter;
/* RCU read lock not necessary because we have write-side protection
* (rtnl_mutex), however a non-rcu iterator does not exist.
*/
netdev_for_each_upper_dev_rcu(netdev, upper_dev, iter)
if (is_vlan_dev(upper_dev))
return -EOPNOTSUPP;
return 0;
}
static int
dpaa2_switch_prechangeupper_sanity_checks(struct net_device *netdev,
struct net_device *upper_dev,
struct netlink_ext_ack *extack)
{
struct ethsw_port_priv *port_priv = netdev_priv(netdev);
struct ethsw_port_priv *other_port_priv;
struct net_device *other_dev;
struct list_head *iter;
int err;
if (!br_vlan_enabled(upper_dev)) {
NL_SET_ERR_MSG_MOD(extack, "Cannot join a VLAN-unaware bridge" );
return -EOPNOTSUPP;
}
err = dpaa2_switch_prevent_bridging_with_8021q_upper(netdev);
if (err) {
NL_SET_ERR_MSG_MOD(extack,
"Cannot join a bridge while VLAN uppers are present" );
return 0;
}
netdev_for_each_lower_dev(upper_dev, other_dev, iter) {
if (!dpaa2_switch_port_dev_check(other_dev))
continue ;
other_port_priv = netdev_priv(other_dev);
if (other_port_priv->ethsw_data != port_priv->ethsw_data) {
NL_SET_ERR_MSG_MOD(extack,
"Interface from a different DPSW is in the bridge already" );
return -EINVAL;
}
}
return 0;
}
static int dpaa2_switch_port_prechangeupper(struct net_device *netdev,
struct netdev_notifier_changeupper_info *info)
{
struct netlink_ext_ack *extack;
struct net_device *upper_dev;
int err;
if (!dpaa2_switch_port_dev_check(netdev))
return 0;
extack = netdev_notifier_info_to_extack(&info->info);
upper_dev = info->upper_dev;
if (netif_is_bridge_master(upper_dev)) {
err = dpaa2_switch_prechangeupper_sanity_checks(netdev,
upper_dev,
extack);
if (err)
return err;
if (!info->linking)
dpaa2_switch_port_pre_bridge_leave(netdev);
}
return 0;
}
static int dpaa2_switch_port_changeupper(struct net_device *netdev,
struct netdev_notifier_changeupper_info *info)
{
struct netlink_ext_ack *extack;
struct net_device *upper_dev;
if (!dpaa2_switch_port_dev_check(netdev))
return 0;
extack = netdev_notifier_info_to_extack(&info->info);
upper_dev = info->upper_dev;
if (netif_is_bridge_master(upper_dev)) {
if (info->linking)
return dpaa2_switch_port_bridge_join(netdev,
upper_dev,
extack);
else
return dpaa2_switch_port_bridge_leave(netdev);
}
return 0;
}
static int dpaa2_switch_port_netdevice_event(struct notifier_block *nb,
unsigned long event, void *ptr)
{
struct net_device *netdev = netdev_notifier_info_to_dev(ptr);
int err = 0;
switch (event) {
case NETDEV_PRECHANGEUPPER:
err = dpaa2_switch_port_prechangeupper(netdev, ptr);
if (err)
return notifier_from_errno(err);
break ;
case NETDEV_CHANGEUPPER:
err = dpaa2_switch_port_changeupper(netdev, ptr);
if (err)
return notifier_from_errno(err);
break ;
}
return NOTIFY_DONE;
}
struct ethsw_switchdev_event_work {
struct work_struct work;
struct switchdev_notifier_fdb_info fdb_info;
struct net_device *dev;
unsigned long event;
};
static void dpaa2_switch_event_work(struct work_struct *work)
{
struct ethsw_switchdev_event_work *switchdev_work =
container_of(work, struct ethsw_switchdev_event_work, work);
struct net_device *dev = switchdev_work->dev;
struct switchdev_notifier_fdb_info *fdb_info;
int err;
rtnl_lock();
fdb_info = &switchdev_work->fdb_info;
switch (switchdev_work->event) {
case SWITCHDEV_FDB_ADD_TO_DEVICE:
if (!fdb_info->added_by_user || fdb_info->is_local)
break ;
if (is_unicast_ether_addr(fdb_info->addr))
err = dpaa2_switch_port_fdb_add_uc(netdev_priv(dev),
fdb_info->addr);
else
err = dpaa2_switch_port_fdb_add_mc(netdev_priv(dev),
fdb_info->addr);
if (err)
break ;
fdb_info->offloaded = true ;
call_switchdev_notifiers(SWITCHDEV_FDB_OFFLOADED, dev,
&fdb_info->info, NULL);
break ;
case SWITCHDEV_FDB_DEL_TO_DEVICE:
if (!fdb_info->added_by_user || fdb_info->is_local)
break ;
if (is_unicast_ether_addr(fdb_info->addr))
dpaa2_switch_port_fdb_del_uc(netdev_priv(dev), fdb_info->addr);
else
dpaa2_switch_port_fdb_del_mc(netdev_priv(dev), fdb_info->addr);
break ;
}
rtnl_unlock();
kfree(switchdev_work->fdb_info.addr);
kfree(switchdev_work);
dev_put(dev);
}
/* Called under rcu_read_lock() */
static int dpaa2_switch_port_event(struct notifier_block *nb,
unsigned long event, void *ptr)
{
struct net_device *dev = switchdev_notifier_info_to_dev(ptr);
struct ethsw_port_priv *port_priv = netdev_priv(dev);
struct ethsw_switchdev_event_work *switchdev_work;
struct switchdev_notifier_fdb_info *fdb_info = ptr;
struct ethsw_core *ethsw = port_priv->ethsw_data;
if (event == SWITCHDEV_PORT_ATTR_SET)
return dpaa2_switch_port_attr_set_event(dev, ptr);
if (!dpaa2_switch_port_dev_check(dev))
return NOTIFY_DONE;
switchdev_work = kzalloc(sizeof (*switchdev_work), GFP_ATOMIC);
if (!switchdev_work)
return NOTIFY_BAD;
INIT_WORK(&switchdev_work->work, dpaa2_switch_event_work);
switchdev_work->dev = dev;
switchdev_work->event = event;
switch (event) {
case SWITCHDEV_FDB_ADD_TO_DEVICE:
case SWITCHDEV_FDB_DEL_TO_DEVICE:
memcpy(&switchdev_work->fdb_info, ptr,
sizeof (switchdev_work->fdb_info));
switchdev_work->fdb_info.addr = kzalloc(ETH_ALEN, GFP_ATOMIC);
if (!switchdev_work->fdb_info.addr)
goto err_addr_alloc;
ether_addr_copy((u8 *)switchdev_work->fdb_info.addr,
fdb_info->addr);
/* Take a reference on the device to avoid being freed. */
dev_hold(dev);
break ;
default :
kfree(switchdev_work);
return NOTIFY_DONE;
}
queue_work(ethsw->workqueue, &switchdev_work->work);
return NOTIFY_DONE;
err_addr_alloc:
kfree(switchdev_work);
return NOTIFY_BAD;
}
static int dpaa2_switch_port_obj_event(unsigned long event,
struct net_device *netdev,
struct switchdev_notifier_port_obj_info *port_obj_info)
{
int err = -EOPNOTSUPP;
if (!dpaa2_switch_port_dev_check(netdev))
return NOTIFY_DONE;
switch (event) {
case SWITCHDEV_PORT_OBJ_ADD:
err = dpaa2_switch_port_obj_add(netdev, port_obj_info->obj);
break ;
case SWITCHDEV_PORT_OBJ_DEL:
err = dpaa2_switch_port_obj_del(netdev, port_obj_info->obj);
break ;
}
port_obj_info->handled = true ;
return notifier_from_errno(err);
}
static int dpaa2_switch_port_blocking_event(struct notifier_block *nb,
unsigned long event, void *ptr)
{
struct net_device *dev = switchdev_notifier_info_to_dev(ptr);
switch (event) {
case SWITCHDEV_PORT_OBJ_ADD:
case SWITCHDEV_PORT_OBJ_DEL:
return dpaa2_switch_port_obj_event(event, dev, ptr);
case SWITCHDEV_PORT_ATTR_SET:
return dpaa2_switch_port_attr_set_event(dev, ptr);
}
return NOTIFY_DONE;
}
/* Build a linear skb based on a single-buffer frame descriptor */
static struct sk_buff *dpaa2_switch_build_linear_skb(struct ethsw_core *ethsw,
const struct dpaa2_fd *fd)
{
u16 fd_offset = dpaa2_fd_get_offset(fd);
dma_addr_t addr = dpaa2_fd_get_addr(fd);
u32 fd_length = dpaa2_fd_get_len(fd);
struct device *dev = ethsw->dev;
struct sk_buff *skb = NULL;
void *fd_vaddr;
fd_vaddr = dpaa2_iova_to_virt(ethsw->iommu_domain, addr);
dma_unmap_page(dev, addr, DPAA2_SWITCH_RX_BUF_SIZE,
DMA_FROM_DEVICE);
skb = build_skb(fd_vaddr, DPAA2_SWITCH_RX_BUF_SIZE +
SKB_DATA_ALIGN(sizeof (struct skb_shared_info)));
if (unlikely(!skb)) {
dev_err(dev, "build_skb() failed\n" );
return NULL;
}
skb_reserve(skb, fd_offset);
skb_put(skb, fd_length);
ethsw->buf_count--;
return skb;
}
static void dpaa2_switch_tx_conf(struct dpaa2_switch_fq *fq,
const struct dpaa2_fd *fd)
{
dpaa2_switch_free_fd(fq->ethsw, fd);
}
static void dpaa2_switch_rx(struct dpaa2_switch_fq *fq,
const struct dpaa2_fd *fd)
{
struct ethsw_core *ethsw = fq->ethsw;
struct ethsw_port_priv *port_priv;
struct net_device *netdev;
struct vlan_ethhdr *hdr;
struct sk_buff *skb;
u16 vlan_tci, vid;
int if_id, err;
/* get switch ingress interface ID */
if_id = upper_32_bits(dpaa2_fd_get_flc(fd)) & 0x0000FFFF;
if (if_id >= ethsw->sw_attr.num_ifs) {
dev_err(ethsw->dev, "Frame received from unknown interface!\n" );
goto err_free_fd;
}
port_priv = ethsw->ports[if_id];
netdev = port_priv->netdev;
/* build the SKB based on the FD received */
if (dpaa2_fd_get_format(fd) != dpaa2_fd_single) {
if (net_ratelimit()) {
netdev_err(netdev, "Received invalid frame format\n" );
goto err_free_fd;
}
}
skb = dpaa2_switch_build_linear_skb(ethsw, fd);
if (unlikely(!skb))
goto err_free_fd;
skb_reset_mac_header(skb);
/* Remove the VLAN header if the packet that we just received has a vid
* equal to the port PVIDs. Since the dpaa2-switch can operate only in
* VLAN-aware mode and no alterations are made on the packet when it's
* redirected/mirrored to the control interface, we are sure that there
* will always be a VLAN header present.
*/
hdr = vlan_eth_hdr(skb);
vid = ntohs(hdr->h_vlan_TCI) & VLAN_VID_MASK;
if (vid == port_priv->pvid) {
err = __skb_vlan_pop(skb, &vlan_tci);
if (err) {
dev_info(ethsw->dev, "__skb_vlan_pop() returned %d" , err);
goto err_free_fd;
}
}
skb->dev = netdev;
skb->protocol = eth_type_trans(skb, skb->dev);
/* Setup the offload_fwd_mark only if the port is under a bridge */
skb->offload_fwd_mark = !!(port_priv->fdb->bridge_dev);
netif_receive_skb(skb);
return ;
err_free_fd:
dpaa2_switch_free_fd(ethsw, fd);
}
static void dpaa2_switch_detect_features(struct ethsw_core *ethsw)
{
ethsw->features = 0;
if (ethsw->major > 8 || (ethsw->major == 8 && ethsw->minor >= 6))
ethsw->features |= ETHSW_FEATURE_MAC_ADDR;
}
static int dpaa2_switch_setup_fqs(struct ethsw_core *ethsw)
{
struct dpsw_ctrl_if_attr ctrl_if_attr;
struct device *dev = ethsw->dev;
int i = 0;
int err;
err = dpsw_ctrl_if_get_attributes(ethsw->mc_io, 0, ethsw->dpsw_handle,
&ctrl_if_attr);
if (err) {
dev_err(dev, "dpsw_ctrl_if_get_attributes() = %d\n" , err);
return err;
}
--> --------------------
--> maximum size reached
--> --------------------
Messung V0.5 C=97 H=92 G=94
¤ Dauer der Verarbeitung: 0.26 Sekunden
¤
*© Formatika GbR, Deutschland