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Date: Thu, 17 Apr 2014 14:14:32 +0200
From: Jiri Pirko <jiri@...nulli.us>
To: netdev@...r.kernel.org
Cc: davem@...emloft.net, nhorman@...driver.com, andy@...yhouse.net,
tgraf@...g.ch, dborkman@...hat.com, ogerlitz@...lanox.com,
jesse@...ira.com, pshelar@...ira.com, azhou@...ira.com,
ben@...adent.org.uk, stephen@...workplumber.org,
jeffrey.t.kirsher@...el.com, vyasevic@...hat.com,
xiyou.wangcong@...il.com, john.r.fastabend@...el.com,
edumazet@...gle.com, jhs@...atatu.com, sfeldma@...ulusnetworks.com,
f.fainelli@...il.com, roopa@...ulusnetworks.com,
linville@...driver.com, dev@...nvswitch.org, jasowang@...hat.com,
ebiederm@...ssion.com, nicolas.dichtel@...nd.com,
ryazanov.s.a@...il.com, buytenh@...tstofly.org,
aviadr@...lanox.com, nbd@...nwrt.org, alexei.starovoitov@...il.com,
Neil.Jerram@...aswitch.com
Subject: [patch net-next RFC v3 05/10] switchdev: introduce basic support for flows
This patch adds a couple of ndos which can be used to work with flows.
Note that user can use random port netdevice to access the switch.
Signed-off-by: Jiri Pirko <jiri@...nulli.us>
---
include/linux/netdevice.h | 30 ++++++++++++++++++++++++
include/linux/switchdev.h | 25 ++++++++++++++++++++
net/core/switchdev.c | 58 +++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 113 insertions(+)
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 83e38a0..14bd8b3 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -49,6 +49,8 @@
#include <linux/netdev_features.h>
#include <linux/neighbour.h>
+#include <linux/sw_flow.h>
+
#include <uapi/linux/netdevice.h>
struct netpoll_info;
@@ -997,6 +999,26 @@ typedef u16 (*select_queue_fallback_t)(struct net_device *dev,
* 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.
+ *
+ * int (*ndo_swdev_flow_insert)(struct net_device *dev,
+ * const struct sw_flow *flow);
+ * Called to insert a flow into switch device. If driver does
+ * not implement this, it is assumed that the hw does not have
+ * a capability to work with flows.
+ *
+ * int (*ndo_swdev_flow_remove)(struct net_device *dev,
+ * const struct sw_flow *flow);
+ * Called to remove a flow from switch device. If driver does
+ * not implement this, it is assumed that the hw does not have
+ * a capability to work with flows.
+ *
+ * int (*ndo_swdev_flow_action_set)(struct net_device *dev,
+ * const struct sw_flow *flow,
+ * const struct sw_flow_action *action,
+ * size_t action_count);
+ * Called to set actions for a flow inserted in swtich device.
+ * If driver does not implement this, it is assumed that the hw does
+ * not have a capability to work with flows.
*/
struct net_device_ops {
int (*ndo_init)(struct net_device *dev);
@@ -1146,6 +1168,14 @@ struct net_device_ops {
#ifdef CONFIG_NET_SWITCHDEV
int (*ndo_swdev_get_id)(struct net_device *dev,
struct netdev_phys_item_id *psid);
+ int (*ndo_swdev_flow_insert)(struct net_device *dev,
+ const struct sw_flow *flow);
+ int (*ndo_swdev_flow_remove)(struct net_device *dev,
+ const struct sw_flow *flow);
+ int (*ndo_swdev_flow_action_set)(struct net_device *dev,
+ const struct sw_flow *flow,
+ const struct sw_flow_action *action,
+ size_t action_count);
#endif
};
diff --git a/include/linux/switchdev.h b/include/linux/switchdev.h
index b147dde..6f8ce06 100644
--- a/include/linux/switchdev.h
+++ b/include/linux/switchdev.h
@@ -16,6 +16,11 @@
#ifdef CONFIG_NET_SWITCHDEV
int swdev_get_id(struct net_device *dev, struct netdev_phys_item_id *psid);
+int swdev_flow_insert(struct net_device *dev, const struct sw_flow *flow);
+int swdev_flow_remove(struct net_device *dev, const struct sw_flow *flow);
+int swdev_flow_action_set(struct net_device *dev, const struct sw_flow *flow,
+ const struct sw_flow_action *action,
+ size_t action_count);
#else
@@ -25,6 +30,26 @@ static inline int swdev_get_id(struct net_device *dev,
return -EOPNOTSUPP;
}
+static inline int swdev_flow_insert(struct net_device *dev,
+ const struct sw_flow *flow)
+{
+ return -EOPNOTSUPP;
+}
+
+static inline int swdev_flow_remove(struct net_device *dev,
+ const struct sw_flow *flow)
+{
+ return -EOPNOTSUPP;
+}
+
+static inline int swdev_flow_action_set(struct net_device *dev,
+ const struct sw_flow *flow,
+ const struct sw_flow_action *action,
+ size_t action_count)
+{
+ return -EOPNOTSUPP;
+}
+
#endif
#endif /* _LINUX_SWITCHDEV_H_ */
diff --git a/net/core/switchdev.c b/net/core/switchdev.c
index 2d275f5..cb5b6a2 100644
--- a/net/core/switchdev.c
+++ b/net/core/switchdev.c
@@ -30,3 +30,61 @@ int swdev_get_id(struct net_device *dev, struct netdev_phys_item_id *psid)
return ops->ndo_swdev_get_id(dev, psid);
}
EXPORT_SYMBOL(swdev_get_id);
+
+/**
+ * swdev_flow_insert - Insert a flow into switch
+ * @dev: port device
+ * @flow: flow descriptor
+ *
+ * Insert a flow into switch this port is part of.
+ */
+int swdev_flow_insert(struct net_device *dev, const struct sw_flow *flow)
+{
+ const struct net_device_ops *ops = dev->netdev_ops;
+
+ if (!ops->ndo_swdev_flow_insert)
+ return -EOPNOTSUPP;
+ WARN_ON(!ops->ndo_swdev_get_id);
+ return ops->ndo_swdev_flow_insert(dev, flow);
+}
+EXPORT_SYMBOL(swdev_flow_insert);
+
+/**
+ * swdev_flow_remove - Remove a flow from switch
+ * @dev: port device
+ * @flow: flow descriptor
+ *
+ * Remove a flow from switch this port is part of.
+ */
+int swdev_flow_remove(struct net_device *dev, const struct sw_flow *flow)
+{
+ const struct net_device_ops *ops = dev->netdev_ops;
+
+ if (!ops->ndo_swdev_flow_remove)
+ return -EOPNOTSUPP;
+ WARN_ON(!ops->ndo_swdev_get_id);
+ return ops->ndo_swdev_flow_remove(dev, flow);
+}
+EXPORT_SYMBOL(swdev_flow_remove);
+
+/**
+ * swdev_flow_action_set - Set actions for a flow
+ * @dev: port device
+ * @flow: flow descriptor
+ * @action: array of actions
+ * @action_count: length of the array of actions
+ *
+ * Set actions for a flow.
+ */
+int swdev_flow_action_set(struct net_device *dev, const struct sw_flow *flow,
+ const struct sw_flow_action *action,
+ size_t action_count)
+{
+ const struct net_device_ops *ops = dev->netdev_ops;
+
+ if (!ops->ndo_swdev_flow_action_set)
+ return -EOPNOTSUPP;
+ WARN_ON(!ops->ndo_swdev_get_id);
+ return ops->ndo_swdev_flow_action_set(dev, flow, action, action_count);
+}
+EXPORT_SYMBOL(swdev_flow_action_set);
--
1.9.0
--
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