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devlink: Add per devlink instance lock

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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>
This commit is contained in:
Arkadi Sharshevsky
2018-01-15 08:59:02 +01:00
committed by David S. Miller
parent d98c8ccdeb
commit 2406e7e546
2 changed files with 78 additions and 59 deletions
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include/net/devlink.h
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@@ -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);
};