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devlink: Allow taking device lock in pre_doit operations

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Introduce a new private flag ('DEVLINK_NL_FLAG_NEED_DEV_LOCK') to allow
netlink commands to specify that they need to acquire the device lock in
their pre_doit operation and release it in their post_doit operation.

The reload command will use this flag in the subsequent patch.

No functional changes intended.

Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ido Schimmel
2023-11-15 13:17:13 +01:00
committed by David S. Miller
parent c8d0a7d615
commit d32c38256d
4 changed files with 18 additions and 10 deletions
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3
net/devlink/devl_internal.h
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@@ -152,7 +152,8 @@ typedef int devlink_nl_dump_one_func_t(struct sk_buff *msg,
int flags);
struct devlink *
devlink_get_from_attrs_lock(struct net *net, struct nlattr **attrs);
devlink_get_from_attrs_lock(struct net *net, struct nlattr **attrs,
bool dev_lock);
int devlink_nl_dumpit(struct sk_buff *msg, struct netlink_callback *cb,
devlink_nl_dump_one_func_t *dump_one);