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| author |   Andrew Lunn <andrew@lunn.ch> | 2019-04-28 19:37:15 +0200 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2019-04-28 19:41:01 -0400 |
| commit | d3b8c04988ca1685700e345a82a1396df79e6291 (patch) | |
| tree | 382a5a63a483f39027496510da8404a90878bdb9 /include/net/dsa.h | |
| parent | dsa: Add TAG protocol to tag ops (diff) | |
| download | linux-dev-d3b8c04988ca1685700e345a82a1396df79e6291.tar.xz linux-dev-d3b8c04988ca1685700e345a82a1396df79e6291.zip | |
dsa: Add boilerplate helper to register DSA tag driver modules
A DSA tag driver module will need to register the tag protocols it
implements with the DSA core. Add macros containing this boiler plate.
The registration/unregistration code is currently just a stub. A Later
patch will add the real implementation.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
v2
Fix indent of #endif
Rewrite to move list pointer into a new structure
v3
Move kdoc next to macro
Fix THIS_MODULE indentation
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/dsa.h')
| -rw-r--r-- | include/net/dsa.h | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/include/net/dsa.h b/include/net/dsa.h index 720036f48fb3..08ac05c014e3 100644 --- a/include/net/dsa.h +++ b/include/net/dsa.h @@ -594,4 +594,70 @@ int dsa_port_get_ethtool_phy_stats(struct dsa_port *dp, uint64_t *data); int dsa_port_get_phy_sset_count(struct dsa_port *dp); void dsa_port_phylink_mac_change(struct dsa_switch *ds, int port, bool up); +struct dsa_tag_driver { + const struct dsa_device_ops *ops; + struct list_head list; + struct module *owner; +}; + +void dsa_tag_drivers_register(struct dsa_tag_driver *dsa_tag_driver_array[], + unsigned int count, + struct module *owner); +void dsa_tag_drivers_unregister(struct dsa_tag_driver *dsa_tag_driver_array[], + unsigned int count); + +#define dsa_tag_driver_module_drivers(__dsa_tag_drivers_array, __count) \ +static int __init dsa_tag_driver_module_init(void) \ +{ \ + dsa_tag_drivers_register(__dsa_tag_drivers_array, __count, \ + THIS_MODULE); \ + return 0; \ +} \ +module_init(dsa_tag_driver_module_init); \ + \ +static void __exit dsa_tag_driver_module_exit(void) \ +{ \ + dsa_tag_drivers_unregister(__dsa_tag_drivers_array, __count); \ +} \ +module_exit(dsa_tag_driver_module_exit) + +/** + * module_dsa_tag_drivers() - Helper macro for registering DSA tag + * drivers + * @__ops_array: Array of tag driver strucutres + * + * Helper macro for DSA tag drivers which do not do anything special + * in module init/exit. Each module may only use this macro once, and + * calling it replaces module_init() and module_exit(). + */ +#define module_dsa_tag_drivers(__ops_array) \ +dsa_tag_driver_module_drivers(__ops_array, ARRAY_SIZE(__ops_array)) + +#define DSA_TAG_DRIVER_NAME(__ops) dsa_tag_driver ## _ ## __ops + +/* Create a static structure we can build a linked list of dsa_tag + * drivers + */ +#define DSA_TAG_DRIVER(__ops) \ +static struct dsa_tag_driver DSA_TAG_DRIVER_NAME(__ops) = { \ + .ops = &__ops, \ +} + +/** + * module_dsa_tag_driver() - Helper macro for registering a single DSA tag + * driver + * @__ops: Single tag driver structures + * + * Helper macro for DSA tag drivers which do not do anything special + * in module init/exit. Each module may only use this macro once, and + * calling it replaces module_init() and module_exit(). + */ +#define module_dsa_tag_driver(__ops) \ +DSA_TAG_DRIVER(__ops); \ + \ +static struct dsa_tag_driver *dsa_tag_driver_array[] = { \ + &DSA_TAG_DRIVER_NAME(__ops) \ +}; \ +module_dsa_tag_drivers(dsa_tag_driver_array) #endif + |