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netlink: Add new netlink_release function

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A new function netlink_release is added in netlink_sock to store the
protocol's release function. This is called when the socket is deleted.
This can be supplied by the protocol via the release function in
netlink_kernel_cfg. This is being added for the NETLINK_CONNECTOR
protocol, so it can free it's data when socket is deleted.

Signed-off-by: Anjali Kulkarni <anjali.k.kulkarni@oracle.com>
Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Acked-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Anjali Kulkarni
2023-07-19 13:18:17 -07:00
committed by David S. Miller
parent a3377386b5
commit a4c9a56e6a
3 changed files with 11 additions and 0 deletions
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include/linux/netlink.h
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@@ -50,6 +50,7 @@ struct netlink_kernel_cfg {
struct mutex *cb_mutex;
int (*bind)(struct net *net, int group);
void (*unbind)(struct net *net, int group);
void (*release) (struct sock *sk, unsigned long *groups);
};
struct sock *__netlink_kernel_create(struct net *net, int unit,