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net: dsa: use ports list to find slave 

Use the new ports list instead of iterating over switches and their
ports when looking for a slave device from a given master interface.

Signed-off-by: Vivien Didelot <vivien.didelot@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
This commit is contained in:
Vivien Didelot 2019-10-21 16:51:18 -04:00 committed by Jakub Kicinski
parent b96ddf254b
commit 7b9a2f4bac
1 changed files with 6 additions and 17 deletions
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23
net/dsa/dsa_priv.h
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@ -104,25 +104,14 @@ static inline struct net_device *dsa_master_find_slave(struct net_device *dev,
{
struct dsa_port *cpu_dp = dev->dsa_ptr;
struct dsa_switch_tree *dst = cpu_dp->dst;
struct dsa_switch *ds;
struct dsa_port *slave_port;
struct dsa_port *dp;
if (device < 0 || device >= DSA_MAX_SWITCHES)
return NULL;
list_for_each_entry(dp, &dst->ports, list)
if (dp->ds->index == device && dp->index == port &&
dp->type == DSA_PORT_TYPE_USER)
return dp->slave;
ds = dst->ds[device];
if (!ds)
return NULL;
if (port < 0 || port >= ds->num_ports)
return NULL;
slave_port = &ds->ports[port];
if (unlikely(slave_port->type != DSA_PORT_TYPE_USER))
return NULL;
return slave_port->slave;
return NULL;
}
/* port.c */