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devlink: restart dump based on devlink instance ids (simple)

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xarray gives each devlink instance an id and allows us to restart
walk based on that id quite neatly. This is nice both from the
perspective of code brevity and from the stability of the dump
(devlink instances disappearing from before the resumption point
will not cause inconsistent dumps).

This patch takes care of simple cases where state->idx counts
devlink instances only.

Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Jakub Kicinski
2023-01-04 20:05:26 -08:00
parent a0e13dfdc3
commit 731d69a6bd
3 changed files with 25 additions and 29 deletions
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2
net/devlink/core.c
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@@ -91,7 +91,7 @@ void devlink_put(struct devlink *devlink)
call_rcu(&devlink->rcu, __devlink_put_rcu);
}
static struct devlink *
struct devlink *
devlinks_xa_find_get(struct net *net, unsigned long *indexp,
void * (*xa_find_fn)(struct xarray *, unsigned long *,
unsigned long, xa_mark_t))