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netlink: add netlink_kernel_cfg parameter to netlink_kernel_create

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This patch adds the following structure:

struct netlink_kernel_cfg {
        unsigned int    groups;
        void            (*input)(struct sk_buff *skb);
        struct mutex    *cb_mutex;
};

That can be passed to netlink_kernel_create to set optional configurations
for netlink kernel sockets.

I've populated this structure by looking for NULL and zero parameters at the
existing code. The remaining parameters that always need to be set are still
left in the original interface.

That includes optional parameters for the netlink socket creation. This allows
easy extensibility of this interface in the future.

This patch also adapts all callers to use this new interface.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Pablo Neira Ayuso 2012-06-29 06:15:21 +00:00 • committed by David S. Miller
parent dd7f36ba3c
commit a31f2d17b3
20 changed files with 117 additions and 51 deletions
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7
kernel/audit.c
View file

@ -962,14 +962,17 @@ static void audit_receive(struct sk_buff *skb)
static int __init audit_init(void)
{
int i;
struct netlink_kernel_cfg cfg = {
.input = audit_receive,
};
if (audit_initialized == AUDIT_DISABLED)
return 0;
printk(KERN_INFO "audit: initializing netlink socket (%s)\n",
audit_default ? "enabled" : "disabled");
audit_sock = netlink_kernel_create(&init_net, NETLINK_AUDIT, 0,
audit_receive, NULL, THIS_MODULE);
audit_sock = netlink_kernel_create(&init_net, NETLINK_AUDIT,
THIS_MODULE, &cfg);
if (!audit_sock)
audit_panic("cannot initialize netlink socket");
else