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Subject[PATCH net-next 4/4] net: dsa: assign a master to slave ports
Date
Because each DSA slave port may use a different DSA master port, add a
pointer to a master in the slave structure. This is a preparatory patch
for multiple CPU ports.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
---
net/dsa/dsa_priv.h | 7 ++-----
net/dsa/slave.c | 33 ++++++++++++++++++---------------
2 files changed, 20 insertions(+), 20 deletions(-)

diff --git a/net/dsa/dsa_priv.h b/net/dsa/dsa_priv.h
index 59f155cbbe87..a8cd6cbe4061 100644
--- a/net/dsa/dsa_priv.h
+++ b/net/dsa/dsa_priv.h
@@ -66,6 +66,8 @@ struct dsa_notifier_vlan_info {
};

struct dsa_slave_priv {
+ struct dsa_master *master;
+
/* Copy of the master xmit tagging op for faster access in hot path */
struct sk_buff * (*xmit)(struct sk_buff *skb,
struct net_device *dev);
@@ -179,9 +181,4 @@ extern const struct dsa_device_ops qca_netdev_ops;
/* tag_trailer.c */
extern const struct dsa_device_ops trailer_netdev_ops;

-static inline struct net_device *dsa_master_netdev(struct dsa_slave_priv *p)
-{
- return p->dp->ds->dst->master->netdev;
-}
-
#endif
diff --git a/net/dsa/slave.c b/net/dsa/slave.c
index d5a03ef8d0e0..107ed0c4a850 100644
--- a/net/dsa/slave.c
+++ b/net/dsa/slave.c
@@ -66,7 +66,7 @@ static int dsa_slave_get_iflink(const struct net_device *dev)
{
struct dsa_slave_priv *p = netdev_priv(dev);

- return dsa_master_netdev(p)->ifindex;
+ return p->master->netdev->ifindex;
}

static int dsa_slave_open(struct net_device *dev)
@@ -74,7 +74,7 @@ static int dsa_slave_open(struct net_device *dev)
struct dsa_slave_priv *p = netdev_priv(dev);
struct dsa_port *dp = p->dp;
struct dsa_switch *ds = dp->ds;
- struct net_device *master = dsa_master_netdev(p);
+ struct net_device *master = p->master->netdev;
u8 stp_state = dp->bridge_dev ? BR_STATE_BLOCKING : BR_STATE_FORWARDING;
int err;

@@ -127,7 +127,7 @@ static int dsa_slave_open(struct net_device *dev)
static int dsa_slave_close(struct net_device *dev)
{
struct dsa_slave_priv *p = netdev_priv(dev);
- struct net_device *master = dsa_master_netdev(p);
+ struct net_device *master = p->master->netdev;
struct dsa_switch *ds = p->dp->ds;

if (p->phy)
@@ -154,7 +154,7 @@ static int dsa_slave_close(struct net_device *dev)
static void dsa_slave_change_rx_flags(struct net_device *dev, int change)
{
struct dsa_slave_priv *p = netdev_priv(dev);
- struct net_device *master = dsa_master_netdev(p);
+ struct net_device *master = p->master->netdev;

if (change & IFF_ALLMULTI)
dev_set_allmulti(master, dev->flags & IFF_ALLMULTI ? 1 : -1);
@@ -165,7 +165,7 @@ static void dsa_slave_change_rx_flags(struct net_device *dev, int change)
static void dsa_slave_set_rx_mode(struct net_device *dev)
{
struct dsa_slave_priv *p = netdev_priv(dev);
- struct net_device *master = dsa_master_netdev(p);
+ struct net_device *master = p->master->netdev;

dev_mc_sync(master, dev);
dev_uc_sync(master, dev);
@@ -174,7 +174,7 @@ static void dsa_slave_set_rx_mode(struct net_device *dev)
static int dsa_slave_set_mac_address(struct net_device *dev, void *a)
{
struct dsa_slave_priv *p = netdev_priv(dev);
- struct net_device *master = dsa_master_netdev(p);
+ struct net_device *master = p->master->netdev;
struct sockaddr *addr = a;
int err;

@@ -427,7 +427,7 @@ static netdev_tx_t dsa_slave_xmit(struct sk_buff *skb, struct net_device *dev)
/* Queue the SKB for transmission on the parent interface, but
* do not modify its EtherType
*/
- nskb->dev = dsa_master_netdev(p);
+ nskb->dev = p->master->netdev;
dev_queue_xmit(nskb);

return NETDEV_TX_OK;
@@ -687,7 +687,7 @@ static int dsa_slave_netpoll_setup(struct net_device *dev,
struct netpoll_info *ni)
{
struct dsa_slave_priv *p = netdev_priv(dev);
- struct net_device *master = dsa_master_netdev(p);
+ struct net_device *master = p->master->netdev;
struct netpoll *netpoll;
int err = 0;

@@ -1170,7 +1170,7 @@ int dsa_slave_create(struct dsa_port *port, const char *name)
{
struct dsa_switch *ds = port->ds;
struct dsa_switch_tree *dst = ds->dst;
- struct net_device *master = dst->master->netdev;
+ struct dsa_master *master = dst->master;
struct net_device *slave_dev;
struct dsa_slave_priv *p;
int ret;
@@ -1180,10 +1180,10 @@ int dsa_slave_create(struct dsa_port *port, const char *name)
if (slave_dev == NULL)
return -ENOMEM;

- slave_dev->features = master->vlan_features | NETIF_F_HW_TC;
+ slave_dev->features = master->netdev->vlan_features | NETIF_F_HW_TC;
slave_dev->hw_features |= NETIF_F_HW_TC;
slave_dev->ethtool_ops = &dsa_slave_ethtool_ops;
- eth_hw_addr_inherit(slave_dev, master);
+ eth_hw_addr_inherit(slave_dev, master->netdev);
slave_dev->priv_flags |= IFF_NO_QUEUE;
slave_dev->netdev_ops = &dsa_slave_netdev_ops;
slave_dev->switchdev_ops = &dsa_slave_switchdev_ops;
@@ -1196,7 +1196,7 @@ int dsa_slave_create(struct dsa_port *port, const char *name)

SET_NETDEV_DEV(slave_dev, port->ds->dev);
slave_dev->dev.of_node = port->dn;
- slave_dev->vlan_features = master->vlan_features;
+ slave_dev->vlan_features = master->netdev->vlan_features;

p = netdev_priv(slave_dev);
p->stats64 = netdev_alloc_pcpu_stats(struct pcpu_sw_netstats);
@@ -1206,7 +1206,8 @@ int dsa_slave_create(struct dsa_port *port, const char *name)
}
p->dp = port;
INIT_LIST_HEAD(&p->mall_tc_list);
- p->xmit = dst->master->tag_ops->xmit;
+ p->master = master;
+ p->xmit = master->tag_ops->xmit;

p->old_pause = -1;
p->old_link = -1;
@@ -1215,7 +1216,8 @@ int dsa_slave_create(struct dsa_port *port, const char *name)
port->netdev = slave_dev;
ret = register_netdev(slave_dev);
if (ret) {
- netdev_err(master, "error %d registering interface %s\n",
+ netdev_err(master->netdev,
+ "error %d registering interface %s\n",
ret, slave_dev->name);
port->netdev = NULL;
free_percpu(p->stats64);
@@ -1227,7 +1229,8 @@ int dsa_slave_create(struct dsa_port *port, const char *name)

ret = dsa_slave_phy_setup(p, slave_dev);
if (ret) {
- netdev_err(master, "error %d setting up slave phy\n", ret);
+ netdev_err(master->netdev,
+ "error %d setting up slave phy\n", ret);
unregister_netdev(slave_dev);
free_percpu(p->stats64);
free_netdev(slave_dev);
--
2.14.1
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