[PATCH net-next 01/16] net: dsa: use dsa_to_port helper everywhere

From: Vivien Didelot
Date: Sat Oct 19 2019 - 23:21:31 EST

Do not let the drivers access the ds->ports static array directly
while there is a dsa_to_port helper for this purpose.

At the same time, un-const this helper since the SJA1105 driver
assigns the priv member of the returned dsa_port structure.

Signed-off-by: Vivien Didelot <vivien.didelot@xxxxxxxxx>
---
drivers/net/dsa/b53/b53_common.c | 6 +++---
drivers/net/dsa/bcm_sf2.c | 8 ++++----
drivers/net/dsa/bcm_sf2_cfp.c | 6 +++---
drivers/net/dsa/mt7530.c | 12 ++++++------
drivers/net/dsa/mv88e6xxx/chip.c | 10 +++++-----
drivers/net/dsa/qca8k.c | 2 +-
drivers/net/dsa/sja1105/sja1105_main.c | 18 +++++++++---------
include/net/dsa.h | 2 +-
net/dsa/dsa.c | 8 +++++---
net/dsa/dsa2.c | 4 ++--
net/dsa/switch.c | 4 ++--
net/dsa/tag_8021q.c | 6 +++---
12 files changed, 44 insertions(+), 42 deletions(-)

diff --git a/drivers/net/dsa/b53/b53_common.c b/drivers/net/dsa/b53/b53_common.c
index 526ba2ab66f1..9ba91f1370ac 100644
--- a/drivers/net/dsa/b53/b53_common.c
+++ b/drivers/net/dsa/b53/b53_common.c
@@ -524,7 +524,7 @@ int b53_enable_port(struct dsa_switch *ds, int port, struct phy_device *phy)
if (!dsa_is_user_port(ds, port))
return 0;

- cpu_port = ds->ports[port].cpu_dp->index;
+ cpu_port = dsa_to_port(ds, port)->cpu_dp->index;

if (dev->ops->irq_enable)
ret = dev->ops->irq_enable(dev, port);
@@ -1629,7 +1629,7 @@ EXPORT_SYMBOL(b53_fdb_dump);
int b53_br_join(struct dsa_switch *ds, int port, struct net_device *br)
{
struct b53_device *dev = ds->priv;
- s8 cpu_port = ds->ports[port].cpu_dp->index;
+ s8 cpu_port = dsa_to_port(ds, port)->cpu_dp->index;
u16 pvlan, reg;
unsigned int i;

@@ -1675,7 +1675,7 @@ void b53_br_leave(struct dsa_switch *ds, int port, struct net_device *br)
{
struct b53_device *dev = ds->priv;
struct b53_vlan *vl = &dev->vlans[0];
- s8 cpu_port = ds->ports[port].cpu_dp->index;
+ s8 cpu_port = dsa_to_port(ds, port)->cpu_dp->index;
unsigned int i;
u16 pvlan, reg, pvid;

diff --git a/drivers/net/dsa/bcm_sf2.c b/drivers/net/dsa/bcm_sf2.c
index 26509fa37a50..c068a3b7207b 100644
--- a/drivers/net/dsa/bcm_sf2.c
+++ b/drivers/net/dsa/bcm_sf2.c
@@ -662,7 +662,7 @@ static void bcm_sf2_sw_fixed_state(struct dsa_switch *ds, int port,
* state machine and make it go in PHY_FORCING state instead.
*/
if (!status->link)
- netif_carrier_off(ds->ports[port].slave);
+ netif_carrier_off(dsa_to_port(ds, port)->slave);
status->duplex = DUPLEX_FULL;
} else {
status->link = true;
@@ -728,7 +728,7 @@ static int bcm_sf2_sw_resume(struct dsa_switch *ds)
static void bcm_sf2_sw_get_wol(struct dsa_switch *ds, int port,
struct ethtool_wolinfo *wol)
{
- struct net_device *p = ds->ports[port].cpu_dp->master;
+ struct net_device *p = dsa_to_port(ds, port)->cpu_dp->master;
struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
struct ethtool_wolinfo pwol = { };

@@ -752,9 +752,9 @@ static void bcm_sf2_sw_get_wol(struct dsa_switch *ds, int port,
static int bcm_sf2_sw_set_wol(struct dsa_switch *ds, int port,
struct ethtool_wolinfo *wol)
{
- struct net_device *p = ds->ports[port].cpu_dp->master;
+ struct net_device *p = dsa_to_port(ds, port)->cpu_dp->master;
struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
- s8 cpu_port = ds->ports[port].cpu_dp->index;
+ s8 cpu_port = dsa_to_port(ds, port)->cpu_dp->index;
struct ethtool_wolinfo pwol = { };

if (p->ethtool_ops->get_wol)
diff --git a/drivers/net/dsa/bcm_sf2_cfp.c b/drivers/net/dsa/bcm_sf2_cfp.c
index d264776a95a3..f3f0c3f07391 100644
--- a/drivers/net/dsa/bcm_sf2_cfp.c
+++ b/drivers/net/dsa/bcm_sf2_cfp.c
@@ -821,7 +821,7 @@ static int bcm_sf2_cfp_rule_insert(struct dsa_switch *ds, int port,
struct ethtool_rx_flow_spec *fs)
{
struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
- s8 cpu_port = ds->ports[port].cpu_dp->index;
+ s8 cpu_port = dsa_to_port(ds, port)->cpu_dp->index;
__u64 ring_cookie = fs->ring_cookie;
unsigned int queue_num, port_num;
int ret;
@@ -1049,7 +1049,7 @@ static int bcm_sf2_cfp_rule_get_all(struct bcm_sf2_priv *priv,
int bcm_sf2_get_rxnfc(struct dsa_switch *ds, int port,
struct ethtool_rxnfc *nfc, u32 *rule_locs)
{
- struct net_device *p = ds->ports[port].cpu_dp->master;
+ struct net_device *p = dsa_to_port(ds, port)->cpu_dp->master;
struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
int ret = 0;

@@ -1092,7 +1092,7 @@ int bcm_sf2_get_rxnfc(struct dsa_switch *ds, int port,
int bcm_sf2_set_rxnfc(struct dsa_switch *ds, int port,
struct ethtool_rxnfc *nfc)
{
- struct net_device *p = ds->ports[port].cpu_dp->master;
+ struct net_device *p = dsa_to_port(ds, port)->cpu_dp->master;
struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
int ret = 0;

diff --git a/drivers/net/dsa/mt7530.c b/drivers/net/dsa/mt7530.c
index 1d8d36de4d20..a91293e47a57 100644
--- a/drivers/net/dsa/mt7530.c
+++ b/drivers/net/dsa/mt7530.c
@@ -862,7 +862,7 @@ mt7530_port_set_vlan_unaware(struct dsa_switch *ds, int port)

for (i = 0; i < MT7530_NUM_PORTS; i++) {
if (dsa_is_user_port(ds, i) &&
- dsa_port_is_vlan_filtering(&ds->ports[i])) {
+ dsa_port_is_vlan_filtering(dsa_to_port(ds, i))) {
all_user_ports_removed = false;
break;
}
@@ -922,7 +922,7 @@ mt7530_port_bridge_leave(struct dsa_switch *ds, int port,
* other port is still a VLAN-aware port.
*/
if (dsa_is_user_port(ds, i) && i != port &&
- !dsa_port_is_vlan_filtering(&ds->ports[i])) {
+ !dsa_port_is_vlan_filtering(dsa_to_port(ds, i))) {
if (dsa_to_port(ds, i)->bridge_dev != bridge)
continue;
if (priv->ports[i].enable)
@@ -1165,7 +1165,7 @@ mt7530_port_vlan_add(struct dsa_switch *ds, int port,
/* The port is kept as VLAN-unaware if bridge with vlan_filtering not
* being set.
*/
- if (!dsa_port_is_vlan_filtering(&ds->ports[port]))
+ if (!dsa_port_is_vlan_filtering(dsa_to_port(ds, port)))
return;

mutex_lock(&priv->reg_mutex);
@@ -1196,7 +1196,7 @@ mt7530_port_vlan_del(struct dsa_switch *ds, int port,
/* The port is kept as VLAN-unaware if bridge with vlan_filtering not
* being set.
*/
- if (!dsa_port_is_vlan_filtering(&ds->ports[port]))
+ if (!dsa_port_is_vlan_filtering(dsa_to_port(ds, port)))
return 0;

mutex_lock(&priv->reg_mutex);
@@ -1252,7 +1252,7 @@ mt7530_setup(struct dsa_switch *ds)
* controller also is the container for two GMACs nodes representing
* as two netdev instances.
*/
- dn = ds->ports[MT7530_CPU_PORT].master->dev.of_node->parent;
+ dn = dsa_to_port(ds, MT7530_CPU_PORT)->master->dev.of_node->parent;

if (priv->id == ID_MT7530) {
priv->ethernet = syscon_node_to_regmap(dn);
@@ -1340,7 +1340,7 @@ mt7530_setup(struct dsa_switch *ds)

if (!dsa_is_unused_port(ds, 5)) {
priv->p5_intf_sel = P5_INTF_SEL_GMAC5;
- interface = of_get_phy_mode(ds->ports[5].dn);
+ interface = of_get_phy_mode(dsa_to_port(ds, 5)->dn);
} else {
/* Scan the ethernet nodes. look for GMAC1, lookup used phy */
for_each_child_of_node(dn, mac_np) {
diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c
index 6787d560e9e3..d67deec77452 100644
--- a/drivers/net/dsa/mv88e6xxx/chip.c
+++ b/drivers/net/dsa/mv88e6xxx/chip.c
@@ -1075,7 +1075,7 @@ static u16 mv88e6xxx_port_vlan(struct mv88e6xxx_chip *chip, int dev, int port)
if (dsa_is_cpu_port(ds, port) || dsa_is_dsa_port(ds, port))
return mv88e6xxx_port_mask(chip);

- br = ds->ports[port].bridge_dev;
+ br = dsa_to_port(ds, port)->bridge_dev;
pvlan = 0;

/* Frames from user ports can egress any local DSA links and CPU ports,
@@ -1402,7 +1402,7 @@ static int mv88e6xxx_port_check_hw_vlan(struct dsa_switch *ds, int port,
if (dsa_is_dsa_port(ds, i) || dsa_is_cpu_port(ds, i))
continue;

- if (!ds->ports[i].slave)
+ if (!dsa_to_port(ds, i)->slave)
continue;

if (vlan.member[i] ==
@@ -1410,7 +1410,7 @@ static int mv88e6xxx_port_check_hw_vlan(struct dsa_switch *ds, int port,
continue;

if (dsa_to_port(ds, i)->bridge_dev ==
- ds->ports[port].bridge_dev)
+ dsa_to_port(ds, port)->bridge_dev)
break; /* same bridge, check next VLAN */

if (!dsa_to_port(ds, i)->bridge_dev)
@@ -2042,7 +2042,7 @@ static int mv88e6xxx_bridge_map(struct mv88e6xxx_chip *chip,

/* Remap the Port VLAN of each local bridge group member */
for (port = 0; port < mv88e6xxx_num_ports(chip); ++port) {
- if (chip->ds->ports[port].bridge_dev == br) {
+ if (dsa_to_port(chip->ds, port)->bridge_dev == br) {
err = mv88e6xxx_port_vlan_map(chip, port);
if (err)
return err;
@@ -2059,7 +2059,7 @@ static int mv88e6xxx_bridge_map(struct mv88e6xxx_chip *chip,
break;

for (port = 0; port < ds->num_ports; ++port) {
- if (ds->ports[port].bridge_dev == br) {
+ if (dsa_to_port(ds, port)->bridge_dev == br) {
err = mv88e6xxx_pvt_map(chip, dev, port);
if (err)
return err;
diff --git a/drivers/net/dsa/qca8k.c b/drivers/net/dsa/qca8k.c
index b00274caae4f..71e44c8763b8 100644
--- a/drivers/net/dsa/qca8k.c
+++ b/drivers/net/dsa/qca8k.c
@@ -661,7 +661,7 @@ qca8k_setup(struct dsa_switch *ds)
return ret;

/* Initialize CPU port pad mode (xMII type, delays...) */
- phy_mode = of_get_phy_mode(ds->ports[QCA8K_CPU_PORT].dn);
+ phy_mode = of_get_phy_mode(dsa_to_port(ds, QCA8K_CPU_PORT)->dn);
if (phy_mode < 0) {
pr_err("Can't find phy-mode for master device\n");
return phy_mode;
diff --git a/drivers/net/dsa/sja1105/sja1105_main.c b/drivers/net/dsa/sja1105/sja1105_main.c
index 2ffe642cf54b..4b0cb779f187 100644
--- a/drivers/net/dsa/sja1105/sja1105_main.c
+++ b/drivers/net/dsa/sja1105/sja1105_main.c
@@ -1058,7 +1058,7 @@ int sja1105pqrs_fdb_add(struct dsa_switch *ds, int port,
l2_lookup.vlanid = vid;
l2_lookup.iotag = SJA1105_S_TAG;
l2_lookup.mask_macaddr = GENMASK_ULL(ETH_ALEN * 8 - 1, 0);
- if (dsa_port_is_vlan_filtering(&ds->ports[port])) {
+ if (dsa_port_is_vlan_filtering(dsa_to_port(ds, port))) {
l2_lookup.mask_vlanid = VLAN_VID_MASK;
l2_lookup.mask_iotag = BIT(0);
} else {
@@ -1121,7 +1121,7 @@ int sja1105pqrs_fdb_del(struct dsa_switch *ds, int port,
l2_lookup.vlanid = vid;
l2_lookup.iotag = SJA1105_S_TAG;
l2_lookup.mask_macaddr = GENMASK_ULL(ETH_ALEN * 8 - 1, 0);
- if (dsa_port_is_vlan_filtering(&ds->ports[port])) {
+ if (dsa_port_is_vlan_filtering(dsa_to_port(ds, port))) {
l2_lookup.mask_vlanid = VLAN_VID_MASK;
l2_lookup.mask_iotag = BIT(0);
} else {
@@ -1167,7 +1167,7 @@ static int sja1105_fdb_add(struct dsa_switch *ds, int port,
* for what gets printed in 'bridge fdb show'. In the case of zero,
* no VID gets printed at all.
*/
- if (!dsa_port_is_vlan_filtering(&ds->ports[port]))
+ if (!dsa_port_is_vlan_filtering(dsa_to_port(ds, port)))
vid = 0;

return priv->info->fdb_add_cmd(ds, port, addr, vid);
@@ -1178,7 +1178,7 @@ static int sja1105_fdb_del(struct dsa_switch *ds, int port,
{
struct sja1105_private *priv = ds->priv;

- if (!dsa_port_is_vlan_filtering(&ds->ports[port]))
+ if (!dsa_port_is_vlan_filtering(dsa_to_port(ds, port)))
vid = 0;

return priv->info->fdb_del_cmd(ds, port, addr, vid);
@@ -1217,7 +1217,7 @@ static int sja1105_fdb_dump(struct dsa_switch *ds, int port,
u64_to_ether_addr(l2_lookup.macaddr, macaddr);

/* We need to hide the dsa_8021q VLANs from the user. */
- if (!dsa_port_is_vlan_filtering(&ds->ports[port]))
+ if (!dsa_port_is_vlan_filtering(dsa_to_port(ds, port)))
l2_lookup.vlanid = 0;
cb(macaddr, l2_lookup.vlanid, l2_lookup.lockeds, data);
}
@@ -1704,7 +1704,7 @@ static int sja1105_port_enable(struct dsa_switch *ds, int port,
if (!dsa_is_user_port(ds, port))
return 0;

- slave = ds->ports[port].slave;
+ slave = dsa_to_port(ds, port)->slave;

slave->features &= ~NETIF_F_HW_VLAN_CTAG_FILTER;

@@ -1736,7 +1736,7 @@ static int sja1105_mgmt_xmit(struct dsa_switch *ds, int port, int slot,
}

/* Transfer skb to the host port. */
- dsa_enqueue_skb(skb, ds->ports[port].slave);
+ dsa_enqueue_skb(skb, dsa_to_port(ds, port)->slave);

/* Wait until the switch has processed the frame */
do {
@@ -2061,8 +2061,8 @@ static int sja1105_probe(struct spi_device *spi)
for (i = 0; i < SJA1105_NUM_PORTS; i++) {
struct sja1105_port *sp = &priv->ports[i];

- ds->ports[i].priv = sp;
- sp->dp = &ds->ports[i];
+ dsa_to_port(ds, i)->priv = sp;
+ sp->dp = dsa_to_port(ds, i);
sp->data = tagger_data;
}
mutex_init(&priv->ptp_data.lock);
diff --git a/include/net/dsa.h b/include/net/dsa.h
index 8c3ea0530f65..2e4fe2f8962b 100644
--- a/include/net/dsa.h
+++ b/include/net/dsa.h
@@ -278,7 +278,7 @@ struct dsa_switch {
struct dsa_port ports[];
};

-static inline const struct dsa_port *dsa_to_port(struct dsa_switch *ds, int p)
+static inline struct dsa_port *dsa_to_port(struct dsa_switch *ds, int p)
{
return &ds->ports[p];
}
diff --git a/net/dsa/dsa.c b/net/dsa/dsa.c
index 43120a3fb06f..a5545762f5e7 100644
--- a/net/dsa/dsa.c
+++ b/net/dsa/dsa.c
@@ -246,7 +246,9 @@ static int dsa_switch_rcv(struct sk_buff *skb, struct net_device *dev,
#ifdef CONFIG_PM_SLEEP
static bool dsa_is_port_initialized(struct dsa_switch *ds, int p)
{
- return dsa_is_user_port(ds, p) && ds->ports[p].slave;
+ const struct dsa_port *dp = dsa_to_port(ds, p);
+
+ return dp->type == DSA_PORT_TYPE_USER && dp->slave;
}

int dsa_switch_suspend(struct dsa_switch *ds)
@@ -258,7 +260,7 @@ int dsa_switch_suspend(struct dsa_switch *ds)
if (!dsa_is_port_initialized(ds, i))
continue;

- ret = dsa_slave_suspend(ds->ports[i].slave);
+ ret = dsa_slave_suspend(dsa_to_port(ds, i)->slave);
if (ret)
return ret;
}
@@ -285,7 +287,7 @@ int dsa_switch_resume(struct dsa_switch *ds)
if (!dsa_is_port_initialized(ds, i))
continue;

- ret = dsa_slave_resume(ds->ports[i].slave);
+ ret = dsa_slave_resume(dsa_to_port(ds, i)->slave);
if (ret)
return ret;
}
diff --git a/net/dsa/dsa2.c b/net/dsa/dsa2.c
index 716d265ba8ca..1716535167ee 100644
--- a/net/dsa/dsa2.c
+++ b/net/dsa/dsa2.c
@@ -708,7 +708,7 @@ static int dsa_switch_parse_ports_of(struct dsa_switch *ds,
goto out_put_node;
}

- dp = &ds->ports[reg];
+ dp = dsa_to_port(ds, reg);

err = dsa_port_parse_of(dp, port);
if (err)
@@ -787,7 +787,7 @@ static int dsa_switch_parse_ports(struct dsa_switch *ds,
for (i = 0; i < DSA_MAX_PORTS; i++) {
name = cd->port_names[i];
dev = cd->netdev[i];
- dp = &ds->ports[i];
+ dp = dsa_to_port(ds, i);

if (!name)
continue;
diff --git a/net/dsa/switch.c b/net/dsa/switch.c
index 6a9607518823..df4abe897ed6 100644
--- a/net/dsa/switch.c
+++ b/net/dsa/switch.c
@@ -20,7 +20,7 @@ static unsigned int dsa_switch_fastest_ageing_time(struct dsa_switch *ds,
int i;

for (i = 0; i < ds->num_ports; ++i) {
- struct dsa_port *dp = &ds->ports[i];
+ struct dsa_port *dp = dsa_to_port(ds, i);

if (dp->ageing_time && dp->ageing_time < ageing_time)
ageing_time = dp->ageing_time;
@@ -98,7 +98,7 @@ static int dsa_switch_bridge_leave(struct dsa_switch *ds,
if (unset_vlan_filtering) {
struct switchdev_trans trans = {0};

- err = dsa_port_vlan_filtering(&ds->ports[info->port],
+ err = dsa_port_vlan_filtering(dsa_to_port(ds, info->port),
false, &trans);
if (err && err != EOPNOTSUPP)
return err;
diff --git a/net/dsa/tag_8021q.c b/net/dsa/tag_8021q.c
index 9c1cc2482b68..bf91fc55fc44 100644
--- a/net/dsa/tag_8021q.c
+++ b/net/dsa/tag_8021q.c
@@ -103,7 +103,7 @@ static int dsa_8021q_restore_pvid(struct dsa_switch *ds, int port)
if (!dsa_is_user_port(ds, port))
return 0;

- slave = ds->ports[port].slave;
+ slave = dsa_to_port(ds, port)->slave;

err = br_vlan_get_pvid(slave, &pvid);
if (err < 0)
@@ -118,7 +118,7 @@ static int dsa_8021q_restore_pvid(struct dsa_switch *ds, int port)
return err;
}

- return dsa_port_vid_add(&ds->ports[port], pvid, vinfo.flags);
+ return dsa_port_vid_add(dsa_to_port(ds, port), pvid, vinfo.flags);
}

/* If @enabled is true, installs @vid with @flags into the switch port's HW
@@ -130,7 +130,7 @@ static int dsa_8021q_restore_pvid(struct dsa_switch *ds, int port)
static int dsa_8021q_vid_apply(struct dsa_switch *ds, int port, u16 vid,
u16 flags, bool enabled)
{
- struct dsa_port *dp = &ds->ports[port];
+ struct dsa_port *dp = dsa_to_port(ds, port);
struct bridge_vlan_info vinfo;
int err;

--
2.23.0