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authorScott Feldman <sfeldma@gmail.com>2015-05-10 19:47:49 +0300
committerDavid S. Miller <davem@davemloft.net>2015-05-13 01:43:53 +0300
commitf8e20a9f87d33865cc1d67f13da0db8d457fc3c9 (patch)
tree0072db71330af1215e78c1def9033d62156a4183 /net
parent3094333d9089d43e8b8f0418676fa6ae06c27b51 (diff)
downloadlinux-f8e20a9f87d33865cc1d67f13da0db8d457fc3c9.tar.xz
switchdev: convert parent_id_get to switchdev attr get
Switch ID is just a gettable port attribute. Convert switchdev op switchdev_parent_id_get to a switchdev attr. Note: for sysfs and netlink interfaces, SWITCHDEV_ATTR_PORT_PARENT_ID is called with SWITCHDEV_F_NO_RECUSE to limit switch ID user-visiblity to only port netdevs. So when a port is stacked under bond/bridge, the user can only query switch id via the switch ports, but not via the upper devices Signed-off-by: Scott Feldman <sfeldma@gmail.com> Acked-by: Jiri Pirko <jiri@resnulli.us> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/core/net-sysfs.c10
-rw-r--r--net/core/rtnetlink.c9
-rw-r--r--net/dsa/slave.c16
-rw-r--r--net/switchdev/switchdev.c38
4 files changed, 35 insertions, 38 deletions
diff --git a/net/core/net-sysfs.c b/net/core/net-sysfs.c
index be86a7ce9282..5a9ce96f6d27 100644
--- a/net/core/net-sysfs.c
+++ b/net/core/net-sysfs.c
@@ -458,11 +458,15 @@ static ssize_t phys_switch_id_show(struct device *dev,
return restart_syscall();
if (dev_isalive(netdev)) {
- struct netdev_phys_item_id ppid;
+ struct switchdev_attr attr = {
+ .id = SWITCHDEV_ATTR_PORT_PARENT_ID,
+ .flags = SWITCHDEV_F_NO_RECURSE,
+ };
- ret = switchdev_parent_id_get(netdev, &ppid);
+ ret = switchdev_port_attr_get(netdev, &attr);
if (!ret)
- ret = sprintf(buf, "%*phN\n", ppid.id_len, ppid.id);
+ ret = sprintf(buf, "%*phN\n", attr.ppid.id_len,
+ attr.ppid.id);
}
rtnl_unlock();
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index fcd41fcd7e70..c6c6b2c34926 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -1004,16 +1004,19 @@ static int rtnl_phys_port_name_fill(struct sk_buff *skb, struct net_device *dev)
static int rtnl_phys_switch_id_fill(struct sk_buff *skb, struct net_device *dev)
{
int err;
- struct netdev_phys_item_id psid;
+ struct switchdev_attr attr = {
+ .id = SWITCHDEV_ATTR_PORT_PARENT_ID,
+ .flags = SWITCHDEV_F_NO_RECURSE,
+ };
- err = switchdev_parent_id_get(dev, &psid);
+ err = switchdev_port_attr_get(dev, &attr);
if (err) {
if (err == -EOPNOTSUPP)
return 0;
return err;
}
- if (nla_put(skb, IFLA_PHYS_SWITCH_ID, psid.id_len, psid.id))
+ if (nla_put(skb, IFLA_PHYS_SWITCH_ID, attr.ppid.id_len, attr.ppid.id))
return -EMSGSIZE;
return 0;
diff --git a/net/dsa/slave.c b/net/dsa/slave.c
index 1546acf6ebd3..de705b674ac9 100644
--- a/net/dsa/slave.c
+++ b/net/dsa/slave.c
@@ -382,14 +382,20 @@ static int dsa_slave_bridge_port_leave(struct net_device *dev)
return ret;
}
-static int dsa_slave_parent_id_get(struct net_device *dev,
- struct netdev_phys_item_id *psid)
+static int dsa_slave_port_attr_get(struct net_device *dev,
+ struct switchdev_attr *attr)
{
struct dsa_slave_priv *p = netdev_priv(dev);
struct dsa_switch *ds = p->parent;
- psid->id_len = sizeof(ds->index);
- memcpy(&psid->id, &ds->index, psid->id_len);
+ switch (attr->id) {
+ case SWITCHDEV_ATTR_PORT_PARENT_ID:
+ attr->ppid.id_len = sizeof(ds->index);
+ memcpy(&attr->ppid.id, &ds->index, attr->ppid.id_len);
+ break;
+ default:
+ return -EOPNOTSUPP;
+ }
return 0;
}
@@ -676,7 +682,7 @@ static const struct net_device_ops dsa_slave_netdev_ops = {
};
static const struct switchdev_ops dsa_slave_switchdev_ops = {
- .switchdev_parent_id_get = dsa_slave_parent_id_get,
+ .switchdev_port_attr_get = dsa_slave_port_attr_get,
.switchdev_port_stp_update = dsa_slave_stp_update,
};
diff --git a/net/switchdev/switchdev.c b/net/switchdev/switchdev.c
index 8f47187dc185..117fd0797abd 100644
--- a/net/switchdev/switchdev.c
+++ b/net/switchdev/switchdev.c
@@ -19,24 +19,6 @@
#include <net/switchdev.h>
/**
- * switchdev_parent_id_get - Get ID of a switch
- * @dev: port device
- * @psid: switch ID
- *
- * Get ID of a switch this port is part of.
- */
-int switchdev_parent_id_get(struct net_device *dev,
- struct netdev_phys_item_id *psid)
-{
- const struct switchdev_ops *ops = dev->switchdev_ops;
-
- if (!ops || !ops->switchdev_parent_id_get)
- return -EOPNOTSUPP;
- return ops->switchdev_parent_id_get(dev, psid);
-}
-EXPORT_SYMBOL_GPL(switchdev_parent_id_get);
-
-/**
* switchdev_port_attr_get - Get port attribute
*
* @dev: port device
@@ -414,11 +396,10 @@ static struct net_device *switchdev_get_lowest_dev(struct net_device *dev)
struct list_head *iter;
/* Recusively search down until we find a sw port dev.
- * (A sw port dev supports switchdev_parent_id_get).
+ * (A sw port dev supports switchdev_port_attr_get).
*/
- if (dev->features & NETIF_F_HW_SWITCH_OFFLOAD &&
- ops && ops->switchdev_parent_id_get)
+ if (ops && ops->switchdev_port_attr_get)
return dev;
netdev_for_each_lower_dev(dev, lower_dev, iter) {
@@ -432,8 +413,10 @@ static struct net_device *switchdev_get_lowest_dev(struct net_device *dev)
static struct net_device *switchdev_get_dev_by_nhs(struct fib_info *fi)
{
- struct netdev_phys_item_id psid;
- struct netdev_phys_item_id prev_psid;
+ struct switchdev_attr attr = {
+ .id = SWITCHDEV_ATTR_PORT_PARENT_ID,
+ };
+ struct switchdev_attr prev_attr;
struct net_device *dev = NULL;
int nhsel;
@@ -449,17 +432,18 @@ static struct net_device *switchdev_get_dev_by_nhs(struct fib_info *fi)
if (!dev)
return NULL;
- if (switchdev_parent_id_get(dev, &psid))
+ if (switchdev_port_attr_get(dev, &attr))
return NULL;
if (nhsel > 0) {
- if (prev_psid.id_len != psid.id_len)
+ if (prev_attr.ppid.id_len != attr.ppid.id_len)
return NULL;
- if (memcmp(prev_psid.id, psid.id, psid.id_len))
+ if (memcmp(prev_attr.ppid.id, attr.ppid.id,
+ attr.ppid.id_len))
return NULL;
}
- prev_psid = psid;
+ prev_attr = attr;
}
return dev;