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net: dsa: Allow the DSA driver to indicate the tag protocol

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DSA drivers may drive different families of switches which need
different tag protocol. Rather than hard code the tag protocol in the
driver structure, have a callback for the DSA core to call.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Andrew Lunn 2016-08-22 16:01:01 +02:00 • committed by David S. Miller
parent 1ae292a245
commit 7b314362a2
7 changed files with 34 additions and 8 deletions
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4
net/dsa/dsa2.c
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@ -443,6 +443,7 @@ static int dsa_cpu_parse(struct device_node *port, u32 index,
struct dsa_switch_tree *dst,
struct dsa_switch *ds)
{
enum dsa_tag_protocol tag_protocol;
struct net_device *ethernet_dev;
struct device_node *ethernet;
@ -465,7 +466,8 @@ static int dsa_cpu_parse(struct device_node *port, u32 index,
dst->cpu_port = index;
}
dst->tag_ops = dsa_resolve_tag_protocol(ds->drv->tag_protocol);
tag_protocol = ds->drv->get_tag_protocol(ds);
dst->tag_ops = dsa_resolve_tag_protocol(tag_protocol);
if (IS_ERR(dst->tag_ops)) {
dev_warn(ds->dev, "No tagger for this switch\n");
return PTR_ERR(dst->tag_ops);