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| author | Johannes Berg <johannes@sipsolutions.net> | 2007-07-18 15:46:06 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2007-07-18 15:46:06 -0700 |
| commit | b4ff4f0419ae5db83553fab79d03a89c10d540a8 (patch) | |
| tree | 17695af46692c31ec1f33ffb68bc686064227913 /include/linux | |
| parent | c81de6addb913423acef6e692fd70688180ab5dd (diff) | |
| download | linux-b4ff4f0419ae5db83553fab79d03a89c10d540a8.tar.gz linux-b4ff4f0419ae5db83553fab79d03a89c10d540a8.tar.bz2 linux-b4ff4f0419ae5db83553fab79d03a89c10d540a8.zip | |
[NETLINK]: allocate group bitmaps dynamically
Allow changing the number of groups for a netlink family
after it has been created, use RCU to protect the listeners
bitmap keeping netlink_has_listeners() lock-free.
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Acked-by: Patrick McHardy <kaber@trash.net>
Acked-by: Jamal Hadi Salim <hadi@cyberus.ca>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/netlink.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/netlink.h b/include/linux/netlink.h index 2e23353c28a5..b971ddd24090 100644 --- a/include/linux/netlink.h +++ b/include/linux/netlink.h @@ -161,6 +161,7 @@ extern struct sock *netlink_kernel_create(int unit, unsigned int groups, void (*input)(struct sock *sk, int len), struct mutex *cb_mutex, struct module *module); +extern int netlink_change_ngroups(struct sock *sk, unsigned int groups); extern void netlink_ack(struct sk_buff *in_skb, struct nlmsghdr *nlh, int err); extern int netlink_has_listeners(struct sock *sk, unsigned int group); extern int netlink_unicast(struct sock *ssk, struct sk_buff *skb, __u32 pid, int nonblock); |