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net: devlink: add port_init/fini() helpers to allow pre-register/post-unregister functions

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Lifetime of some of the devlink objects, like regions, is currently
forced to be different for devlink instance and devlink port instance
(per-port regions). The reason is that for devlink ports, the internal
structures initialization happens only after devlink_port_register() is
called.

To resolve this inconsistency, introduce new set of helpers to allow
driver to initialize devlink pointer and region list before
devlink_register() is called. That allows port regions to be created
before devlink port registration and destroyed after devlink
port unregistration.

Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Jiri Pirko
2022-09-29 09:28:58 +02:00
committed by Jakub Kicinski
parent 081adcfe93
commit ae3bbc04d4
2 changed files with 48 additions and 4 deletions
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6
include/net/devlink.h
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@@ -130,7 +130,8 @@ struct devlink_port {
struct devlink_port_attrs attrs;
u8 attrs_set:1,
switch_port:1,
registered:1;
registered:1,
initialized:1;
struct delayed_work type_warn_dw;
struct list_head reporter_list;
struct mutex reporters_lock; /* Protects reporter_list */
@@ -1563,6 +1564,9 @@ void devlink_set_features(struct devlink *devlink, u64 features);
void devlink_register(struct devlink *devlink);
void devlink_unregister(struct devlink *devlink);
void devlink_free(struct devlink *devlink);
void devlink_port_init(struct devlink *devlink,
struct devlink_port *devlink_port);
void devlink_port_fini(struct devlink_port *devlink_port);
int devl_port_register(struct devlink *devlink,
struct devlink_port *devlink_port,
unsigned int port_index);