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Message-Id: <1431276489-64199-5-git-send-email-sfeldma@gmail.com>
Date: Sun, 10 May 2015 09:47:49 -0700
From: sfeldma@...il.com
To: netdev@...r.kernel.org
Cc: jiri@...nulli.us, roopa@...ulusnetworks.com, linux@...ck-us.net,
f.fainelli@...il.com, andrew@...n.ch, simon.horman@...ronome.com,
joe@...ches.com, sridhar.samudrala@...el.com, ronen.arad@...el.com
Subject: [PATCH net-next v7 04/24] switchdev: convert parent_id_get to switchdev attr get
From: Scott Feldman <sfeldma@...il.com>
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@...il.com>
Acked-by: Jiri Pirko <jiri@...nulli.us>
---
drivers/net/ethernet/rocker/rocker.c | 17 ++++++++++-----
include/net/switchdev.h | 18 ++++------------
net/core/net-sysfs.c | 10 ++++++---
net/core/rtnetlink.c | 9 +++++---
net/dsa/slave.c | 16 +++++++++-----
net/switchdev/switchdev.c | 38 ++++++++++------------------------
6 files changed, 51 insertions(+), 57 deletions(-)
diff --git a/drivers/net/ethernet/rocker/rocker.c b/drivers/net/ethernet/rocker/rocker.c
index 7473874..2428299 100644
--- a/drivers/net/ethernet/rocker/rocker.c
+++ b/drivers/net/ethernet/rocker/rocker.c
@@ -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,
diff --git a/include/net/switchdev.h b/include/net/switchdev.h
index 2820438..93316e7 100644
--- a/include/net/switchdev.h
+++ b/include/net/switchdev.h
@@ -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)
{
diff --git a/net/core/net-sysfs.c b/net/core/net-sysfs.c
index be86a7c..5a9ce96 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 fcd41fc..c6c6b2c 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 1546acf..de705b6 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 8f47187..117fd07 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;
--
1.7.10.4
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