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authorEvgeniy Polyakov <johnpol@2ka.mipt.ru>2006-03-20 22:21:40 -0800
committerDavid S. Miller <davem@davemloft.net>2006-03-20 22:21:40 -0800
commitb191ba0d599928372be5a89f75486eb58efab48a (patch)
treea0ecc636d121126aba838d49700ad9cfbbf94733 /Documentation/connector
parent0ac81ae34ec8898e7eb1388fe21e3cee7b626a88 (diff)
[CONNECTOR]: Use netlink_has_listeners() to avoind unnecessary allocations.
Return -ESRCH from cn_netlink_send() when there are not listeners, just as it could be done by netlink_broadcast(). Propagate netlink_broadcast() error back to the caller. Signed-off-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'Documentation/connector')
-rw-r--r--Documentation/connector/connector.txt5
1 files changed, 3 insertions, 2 deletions
diff --git a/Documentation/connector/connector.txt b/Documentation/connector/connector.txt
index 57a314b14cf8..ad6e0ba7b38c 100644
--- a/Documentation/connector/connector.txt
+++ b/Documentation/connector/connector.txt
@@ -69,10 +69,11 @@ Unregisters new callback with connector core.
struct cb_id *id - unique connector's user identifier.
-void cn_netlink_send(struct cn_msg *msg, u32 __groups, int gfp_mask);
+int cn_netlink_send(struct cn_msg *msg, u32 __groups, int gfp_mask);
Sends message to the specified groups. It can be safely called from
-any context, but may silently fail under strong memory pressure.
+softirq context, but may silently fail under strong memory pressure.
+If there are no listeners for given group -ESRCH can be returned.
struct cn_msg * - message header(with attached data).
u32 __group - destination group.

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