swconfig: add API for setting port link speed

Some switches can force link speed for a port. Let's add API that will
allow drivers to export this feature.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
SVN-Revision: 48142

diff --git a/target/linux/generic/files/drivers/net/phy/swconfig.c b/target/linux/generic/files/drivers/net/phy/swconfig.c
index 07efda05ebc772590b008942a2f7eee59972b598..9a5f1e912306c3c83c830ff11acabf0bb4eec3a7 100644 (file)
--- a/target/linux/generic/files/drivers/net/phy/swconfig.c
+++ b/target/linux/generic/files/drivers/net/phy/swconfig.c
@@ -127,6 +127,16 @@ swconfig_get_pvid(struct switch_dev *dev, const struct switch_attr *attr,
        return dev->ops->get_port_pvid(dev, val->port_vlan, &val->value.i);
 }
 
+static int
+swconfig_set_link(struct switch_dev *dev, const struct switch_attr *attr,
+                       struct switch_val *val)
+{
+       if (!dev->ops->set_port_link)
+               return -EOPNOTSUPP;
+
+       return dev->ops->set_port_link(dev, val->port_vlan, val->value.link);
+}
+
 static int
 swconfig_get_link(struct switch_dev *dev, const struct switch_attr *attr,
                        struct switch_val *val)
@@ -206,7 +216,7 @@ static struct switch_attr default_port[] = {
                .type = SWITCH_TYPE_LINK,
                .name = "link",
                .description = "Get port link information",
-               .set = NULL,
+               .set = swconfig_set_link,
                .get = swconfig_get_link,
        }
 };
@@ -282,6 +292,12 @@ static const struct nla_policy port_policy[SWITCH_PORT_ATTR_MAX+1] = {
        [SWITCH_PORT_FLAG_TAGGED] = { .type = NLA_FLAG },
 };
 
+static struct nla_policy link_policy[SWITCH_LINK_ATTR_MAX] = {
+       [SWITCH_LINK_FLAG_DUPLEX] = { .type = NLA_FLAG },
+       [SWITCH_LINK_FLAG_ANEG] = { .type = NLA_FLAG },
+       [SWITCH_LINK_SPEED] = { .type = NLA_U32 },
+};
+
 static inline void
 swconfig_lock(void)
 {
@@ -594,6 +610,22 @@ swconfig_parse_ports(struct sk_buff *msg, struct nlattr *head,
        return 0;
 }
 
+static int
+swconfig_parse_link(struct sk_buff *msg, struct nlattr *nla,
+                   struct switch_port_link *link)
+{
+       struct nlattr *tb[SWITCH_LINK_ATTR_MAX + 1];
+
+       if (nla_parse_nested(tb, SWITCH_LINK_ATTR_MAX, nla, link_policy))
+               return -EINVAL;
+
+       link->duplex = !!tb[SWITCH_LINK_FLAG_DUPLEX];
+       link->aneg = !!tb[SWITCH_LINK_FLAG_ANEG];
+       link->speed = nla_get_u32(tb[SWITCH_LINK_SPEED]);
+
+       return 0;
+}
+
 static int
 swconfig_set_attr(struct sk_buff *skb, struct genl_info *info)
 {
@@ -644,6 +676,21 @@ swconfig_set_attr(struct sk_buff *skb, struct genl_info *info)
                        err = 0;
                }
                break;
+       case SWITCH_TYPE_LINK:
+               val.value.link = &dev->linkbuf;
+               memset(&dev->linkbuf, 0, sizeof(struct switch_port_link));
+
+               if (info->attrs[SWITCH_ATTR_OP_VALUE_LINK]) {
+                       err = swconfig_parse_link(skb,
+                                                 info->attrs[SWITCH_ATTR_OP_VALUE_LINK],
+                                                 val.value.link);
+                       if (err < 0)
+                               goto error;
+               } else {
+                       val.len = 0;
+                       err = 0;
+               }
+               break;
        default:
                goto error;
        }

diff --git a/target/linux/generic/files/include/linux/switch.h b/target/linux/generic/files/include/linux/switch.h
index eac35f91359f3db9196855f5579d0a0bddf35901..4ada0e5d33a0f4ecd524aa4000c75148b40871bc 100644 (file)
--- a/target/linux/generic/files/include/linux/switch.h
+++ b/target/linux/generic/files/include/linux/switch.h
@@ -95,6 +95,8 @@ struct switch_dev_ops {
 
        int (*get_port_link)(struct switch_dev *dev, int port,
                             struct switch_port_link *link);
+       int (*set_port_link)(struct switch_dev *dev, int port,
+                            struct switch_port_link *link);
        int (*get_port_stats)(struct switch_dev *dev, int port,
                              struct switch_port_stats *stats);
 };