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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>
This commit is contained in:
Scott Feldman 2015-05-10 09:47:49 -07:00 committed by David S. Miller
parent 3094333d90
commit f8e20a9f87
6 changed files with 51 additions and 57 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
drivers/net/ethernet/rocker/rocker.c
View File

@ -4221,14 +4221,21 @@ static const struct net_device_ops rocker_port_netdev_ops = {
* swdev interface
********************/
static int rocker_port_switchdev_parent_id_get(struct net_device *dev,
struct netdev_phys_item_id *psid)
static int rocker_port_attr_get(struct net_device *dev,
struct switchdev_attr *attr)
{
struct rocker_port *rocker_port = netdev_priv(dev);
struct rocker *rocker = rocker_port->rocker;
psid->id_len = sizeof(rocker->hw.id);
memcpy(&psid->id, &rocker->hw.id, psid->id_len);
switch (attr->id) {
case SWITCHDEV_ATTR_PORT_PARENT_ID:
attr->ppid.id_len = sizeof(rocker->hw.id);
memcpy(&attr->ppid.id, &rocker->hw.id, attr->ppid.id_len);
break;
default:
return -EOPNOTSUPP;
}
return 0;
}
@ -4266,7 +4273,7 @@ static int rocker_port_switchdev_fib_ipv4_del(struct net_device *dev,
}
static const struct switchdev_ops rocker_port_switchdev_ops = {
.switchdev_parent_id_get = rocker_port_switchdev_parent_id_get,
.switchdev_port_attr_get = rocker_port_attr_get,
.switchdev_port_stp_update = rocker_port_switchdev_port_stp_update,
.switchdev_fib_ipv4_add = rocker_port_switchdev_fib_ipv4_add,
.switchdev_fib_ipv4_del = rocker_port_switchdev_fib_ipv4_del,

18
include/net/switchdev.h
View File

@ -25,12 +25,16 @@ enum switchdev_trans {
enum switchdev_attr_id {
SWITCHDEV_ATTR_UNDEFINED,
SWITCHDEV_ATTR_PORT_PARENT_ID,
};
struct switchdev_attr {
enum switchdev_attr_id id;
enum switchdev_trans trans;
u32 flags;
union {
struct netdev_phys_item_id ppid; /* PORT_PARENT_ID */
};
};
struct fib_info;
@ -38,10 +42,6 @@ struct fib_info;
/**
* struct switchdev_ops - switchdev operations
*
* @switchdev_parent_id_get: Called to get an ID of the switch chip this port
* is part of. If driver implements this, it indicates that it
* represents a port of a switch chip.
*
* @switchdev_port_attr_get: Get a port attribute (see switchdev_attr).
*
* @switchdev_port_attr_set: Set a port attribute (see switchdev_attr).
@ -54,8 +54,6 @@ struct fib_info;
* @switchdev_fib_ipv4_del: Called to delete IPv4 route from switch device.
*/
struct switchdev_ops {
int (*switchdev_parent_id_get)(struct net_device *dev,
struct netdev_phys_item_id *psid);
int (*switchdev_port_attr_get)(struct net_device *dev,
struct switchdev_attr *attr);
int (*switchdev_port_attr_set)(struct net_device *dev,
@ -93,8 +91,6 @@ switchdev_notifier_info_to_dev(const struct switchdev_notifier_info *info)
#ifdef CONFIG_NET_SWITCHDEV
int switchdev_parent_id_get(struct net_device *dev,
struct netdev_phys_item_id *psid);
int switchdev_port_attr_get(struct net_device *dev,
struct switchdev_attr *attr);
int switchdev_port_attr_set(struct net_device *dev,
@ -120,12 +116,6 @@ void switchdev_fib_ipv4_abort(struct fib_info *fi);
#else
static inline int switchdev_parent_id_get(struct net_device *dev,
struct netdev_phys_item_id *psid)
{
return -EOPNOTSUPP;
}
static inline int switchdev_port_attr_get(struct net_device *dev,
struct switchdev_attr *attr)
{

10
net/core/net-sysfs.c
View File

@ -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();

9
net/core/rtnetlink.c
View File

@ -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;

16
net/dsa/slave.c
View File

@ -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,
};

38
net/switchdev/switchdev.c
View File

@ -18,24 +18,6 @@
#include <net/ip_fib.h>
#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
*
@ -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;