devlink: Add per devlink instance lock

This is a preparation before introducing resources and hot reload support. Currently there are two global lock where one protects all devlink access, and the second one protects devlink port access. This patch adds per devlink instance lock which protects the internal members which are the sb/dpipe/ resource/ports. By introducing this lock the global devlink port lock can be discarded. Signed-off-by: Arkadi Sharshevsky <arkadis@mellanox.com> Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
mariux64 · Jan 16, 2018 · 2406e7e · 2406e7e
1 parent d98c8cc
commit 2406e7e
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diff --git a/include/net/devlink.h b/include/net/devlink.h
@@ -30,6 +30,7 @@ struct devlink {
 	const struct devlink_ops *ops;
 	struct device *dev;
 	possible_net_t _net;
+	struct mutex lock;
 	char priv[0] __aligned(NETDEV_ALIGN);
 };