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net: dsa: add ds and index to dsa_port 

Add the physical switch instance and port index a DSA port belongs to to
the dsa_port structure.

That can be used later to retrieve information about a physical port
when configuring a switch fabric, or lighten up struct dsa_slave_priv.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Vivien Didelot 2017-01-27 15:29:38 -05:00 committed by David S. Miller
parent 26895e299c
commit 818be8489d
2 changed files with 8 additions and 0 deletions
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2
include/net/dsa.h
View File

@ -140,6 +140,8 @@ struct dsa_switch_tree {
}; };
struct dsa_port { struct dsa_port {
struct dsa_switch *ds;
unsigned int index;
struct net_device *netdev; struct net_device *netdev;
struct device_node *dn; struct device_node *dn;
unsigned int ageing_time; unsigned int ageing_time;

6
net/dsa/dsa2.c
View File

@ -670,6 +670,7 @@ struct dsa_switch *dsa_switch_alloc(struct device *dev, size_t n)
{ {
size_t size = sizeof(struct dsa_switch) + n * sizeof(struct dsa_port); size_t size = sizeof(struct dsa_switch) + n * sizeof(struct dsa_port);
struct dsa_switch *ds; struct dsa_switch *ds;
int i;
ds = devm_kzalloc(dev, size, GFP_KERNEL); ds = devm_kzalloc(dev, size, GFP_KERNEL);
if (!ds) if (!ds)
@ -678,6 +679,11 @@ struct dsa_switch *dsa_switch_alloc(struct device *dev, size_t n)
ds->dev = dev; ds->dev = dev;
ds->num_ports = n; ds->num_ports = n;
for (i = 0; i < ds->num_ports; ++i) {
ds->ports[i].index = i;
ds->ports[i].ds = ds;
}
return ds; return ds;
} }
EXPORT_SYMBOL_GPL(dsa_switch_alloc); EXPORT_SYMBOL_GPL(dsa_switch_alloc);