This is an incremental patch for the recent genetlink
multicast changes.
Now ACPI events are exported via generic netlink multicast group.
Attachment is an refreshed user space demo "acpi_genl"
that receives genetlink multicast messages from acpi_mc_group.
Thanks for Johannes' help on developing this patch and
the user space demo.
Signed-off-by: Zhang Rui <rui.zhang@xxxxxxxxx>
---
drivers/acpi/event.c | 29 +++++++++--------------------
1 file changed, 9 insertions(+), 20 deletions(-)
Index: linux-2.6.22/drivers/acpi/event.c
===================================================================
--- linux-2.6.22.orig/drivers/acpi/event.c
+++ linux-2.6.22/drivers/acpi/event.c
@@ -132,30 +132,19 @@ enum {
};
#define ACPI_GENL_CMD_MAX (__ACPI_GENL_CMD_MAX - 1)
-#define ACPI_GENL_NAME "acpi_event"
-#define ACPI_GENL_VERSION 0x01
+#define ACPI_GENL_FAMILY_NAME "acpi_event"
+#define ACPI_GENL_VERSION 0x01
+#define ACPI_GENL_MCAST_GROUP_NAME "acpi_mc_group"
static struct genl_family acpi_event_genl_family = {
.id = GENL_ID_GENERATE,
- .name = ACPI_GENL_NAME,
+ .name = ACPI_GENL_FAMILY_NAME,
.version = ACPI_GENL_VERSION,
.maxattr = ACPI_GENL_ATTR_MAX,
};
-/* .doit: standard command callback */
-static int acpi_genl_cmd_event(struct sk_buff *skb, struct genl_info *info)
-{
- struct acpi_genl_event *event = info->userhdr;
-
- if (!event)
- ACPI_DEBUG_PRINT((ACPI_DB_WARN, "ACPI event: NULL\n"));
-
- return 0;
-}
-
-static struct genl_ops acpi_event_genl_ops = {
- .cmd = ACPI_GENL_CMD_EVENT,
- .doit = acpi_genl_cmd_event,
+static struct genl_multicast_group acpi_event_mcgrp = {
+ .name = ACPI_GENL_MCAST_GROUP_NAME,
};
int acpi_bus_generate_genetlink_event(struct acpi_device *device,
@@ -215,7 +204,7 @@ int acpi_bus_generate_genetlink_event(st
}
result =
- genlmsg_multicast(skb, 0, acpi_event_genl_family.id, GFP_ATOMIC);
+ genlmsg_multicast(skb, 0, acpi_event_mcgrp.id, GFP_ATOMIC);
if (result)
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Failed to send a Genetlink message!\n"));
@@ -230,8 +219,8 @@ static int acpi_event_genetlink_init(voi
if (result)
return result;
- result =
- genl_register_ops(&acpi_event_genl_family, &acpi_event_genl_ops);
+ result = genl_register_mc_group(&acpi_event_genl_family,
+ &acpi_event_mcgrp);
if (result)
genl_unregister_family(&acpi_event_genl_family);
-
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