From: Florian Fainelli <f.fainelli@gmail.com>
To: netdev@vger.kernel.org
Cc: Florian Fainelli <f.fainelli@gmail.com>,
"David S. Miller" <davem@davemloft.net>,
Ido Schimmel <idosch@mellanox.com>,
linux-kernel@vger.kernel.org (open list),
devel@driverdev.osuosl.org (open list:STAGING SUBSYSTEM),
bridge@lists.linux-foundation.org (moderated list:ETHERNET
BRIDGE),
jiri@mellanox.com, andrew@lunn.ch, vivien.didelot@gmail.com
Subject: [PATCH net-next 1/8] switchdev: Add SWITCHDEV_PORT_ATTR_SET
Date: Fri, 22 Feb 2019 15:59:19 -0800 [thread overview]
Message-ID: <20190222235927.10295-2-f.fainelli@gmail.com> (raw)
In-Reply-To: <20190222235927.10295-1-f.fainelli@gmail.com>
In preparation for allowing switchdev enabled drivers to veto specific
attribute settings from within the context of the caller, introduce a
new switchdev notifier type for port attributes.
Suggested-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
---
include/net/switchdev.h | 27 +++++++++++++++++++++
net/switchdev/switchdev.c | 51 +++++++++++++++++++++++++++++++++++++++
2 files changed, 78 insertions(+)
diff --git a/include/net/switchdev.h b/include/net/switchdev.h
index 45310ddf2d7e..ca56b7487540 100644
--- a/include/net/switchdev.h
+++ b/include/net/switchdev.h
@@ -136,6 +136,7 @@ enum switchdev_notifier_type {
SWITCHDEV_PORT_OBJ_ADD, /* Blocking. */
SWITCHDEV_PORT_OBJ_DEL, /* Blocking. */
+ SWITCHDEV_PORT_ATTR_SET, /* May be blocking . */
SWITCHDEV_VXLAN_FDB_ADD_TO_BRIDGE,
SWITCHDEV_VXLAN_FDB_DEL_TO_BRIDGE,
@@ -164,6 +165,13 @@ struct switchdev_notifier_port_obj_info {
bool handled;
};
+struct switchdev_notifier_port_attr_info {
+ struct switchdev_notifier_info info; /* must be first */
+ const struct switchdev_attr *attr;
+ struct switchdev_trans *trans;
+ bool handled;
+};
+
static inline struct net_device *
switchdev_notifier_info_to_dev(const struct switchdev_notifier_info *info)
{
@@ -216,7 +224,15 @@ int switchdev_handle_port_obj_del(struct net_device *dev,
int (*del_cb)(struct net_device *dev,
const struct switchdev_obj *obj));
+int switchdev_handle_port_attr_set(struct net_device *dev,
+ struct switchdev_notifier_port_attr_info *port_attr_info,
+ bool (*check_cb)(const struct net_device *dev),
+ int (*set_cb)(struct net_device *dev,
+ const struct switchdev_attr *attr,
+ struct switchdev_trans *trans));
+
#define SWITCHDEV_SET_OPS(netdev, ops) ((netdev)->switchdev_ops = (ops))
+
#else
static inline void switchdev_deferred_process(void)
@@ -303,6 +319,17 @@ switchdev_handle_port_obj_del(struct net_device *dev,
return 0;
}
+static inline int
+switchdev_handle_port_attr_set(struct net_device *dev,
+ struct switchdev_notifier_port_attr_info *port_attr_info,
+ bool (*check_cb)(const struct net_device *dev),
+ int (*set_cb)(struct net_device *dev,
+ const struct switchdev_attr *attr,
+ struct switchdev_trans *trans))
+{
+ return 0;
+}
+
#define SWITCHDEV_SET_OPS(netdev, ops) do {} while (0)
#endif
diff --git a/net/switchdev/switchdev.c b/net/switchdev/switchdev.c
index 7e1357db33d7..94400f5b8e07 100644
--- a/net/switchdev/switchdev.c
+++ b/net/switchdev/switchdev.c
@@ -697,3 +697,54 @@ int switchdev_handle_port_obj_del(struct net_device *dev,
return err;
}
EXPORT_SYMBOL_GPL(switchdev_handle_port_obj_del);
+
+static int __switchdev_handle_port_attr_set(struct net_device *dev,
+ struct switchdev_notifier_port_attr_info *port_attr_info,
+ bool (*check_cb)(const struct net_device *dev),
+ int (*set_cb)(struct net_device *dev,
+ const struct switchdev_attr *attr,
+ struct switchdev_trans *trans))
+{
+ struct net_device *lower_dev;
+ struct list_head *iter;
+ int err = -EOPNOTSUPP;
+
+ if (check_cb(dev)) {
+ port_attr_info->handled = true;
+ return set_cb(dev, port_attr_info->attr,
+ port_attr_info->trans);
+ }
+
+ /* Switch ports might be stacked under e.g. a LAG. Ignore the
+ * unsupported devices, another driver might be able to handle them. But
+ * propagate to the callers any hard errors.
+ *
+ * If the driver does its own bookkeeping of stacked ports, it's not
+ * necessary to go through this helper.
+ */
+ netdev_for_each_lower_dev(dev, lower_dev, iter) {
+ err = __switchdev_handle_port_attr_set(lower_dev, port_attr_info,
+ check_cb, set_cb);
+ if (err && err != -EOPNOTSUPP)
+ return err;
+ }
+
+ return err;
+}
+
+int switchdev_handle_port_attr_set(struct net_device *dev,
+ struct switchdev_notifier_port_attr_info *port_attr_info,
+ bool (*check_cb)(const struct net_device *dev),
+ int (*set_cb)(struct net_device *dev,
+ const struct switchdev_attr *attr,
+ struct switchdev_trans *trans))
+{
+ int err;
+
+ err = __switchdev_handle_port_attr_set(dev, port_attr_info, check_cb,
+ set_cb);
+ if (err == -EOPNOTSUPP)
+ err = 0;
+ return err;
+}
+EXPORT_SYMBOL_GPL(switchdev_handle_port_attr_set);
--
2.17.1
next prev parent reply other threads:[~2019-02-23 0:00 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-22 23:59 [PATCH net-next 0/8] net: Remove switchdev_ops Florian Fainelli
2019-02-22 23:59 ` Florian Fainelli [this message]
2019-02-23 10:33 ` [PATCH net-next 1/8] switchdev: Add SWITCHDEV_PORT_ATTR_SET Ido Schimmel
2019-02-22 23:59 ` [PATCH net-next 2/8] rocker: Handle SWITCHDEV_PORT_ATTR_SET Florian Fainelli
2019-02-22 23:59 ` [PATCH net-next 3/8] net: dsa: " Florian Fainelli
2019-02-22 23:59 ` [PATCH net-next 4/8] mlxsw: spectrum_switchdev: " Florian Fainelli
2019-02-23 10:36 ` Ido Schimmel
2019-02-22 23:59 ` [PATCH net-next 5/8] net: mscc: ocelot: " Florian Fainelli
2019-02-22 23:59 ` [PATCH net-next 6/8] staging: fsl-dpaa2: ethsw: " Florian Fainelli
2019-02-22 23:59 ` [PATCH net-next 7/8] net: switchdev: Replace port attr set SDO with a notification Florian Fainelli
2019-02-23 10:32 ` Ido Schimmel
2019-02-24 16:47 ` Florian Fainelli
2019-02-25 9:49 ` Ido Schimmel
2019-02-25 19:47 ` Florian Fainelli
2019-02-27 12:32 ` Ido Schimmel
2019-02-22 23:59 ` [PATCH net-next 8/8] net: Remove switchdev_ops Florian Fainelli
2019-02-22 23:59 ` [PATCH 1/8] switchdev: Add SWITCHDEV_PORT_ATTR_SET Florian Fainelli
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