[PATCH 3/3] netlink: implement unbind to netlink_setsockopt NETLINK_DROP_MEMBERSHIP
Call the per-protocol unbind function rather than bind function on
NETLINK_DROP_MEMBERSHIP in netlink_setsockopt().
Signed-off-by: Richard Guy Briggs <rgb(a)redhat.com>
---
net/netlink/af_netlink.c | 4 +++-
1 files changed, 3 insertions(+), 1 deletions(-)
diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index 9ae6e0f..3938138 100644
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -2109,7 +2109,7 @@ static int netlink_setsockopt(struct socket *sock, int level, int
optname,
return err;
if (!val || val - 1 >= nlk->ngroups)
return -EINVAL;
- if (nlk->netlink_bind) {
+ if (optname == NETLINK_ADD_MEMBERSHIP && nlk->netlink_bind) {
err = nlk->netlink_bind(val);
if (err)
return err;
@@ -2118,6 +2118,8 @@ static int netlink_setsockopt(struct socket *sock, int level, int
optname,
netlink_update_socket_mc(nlk, val,
optname == NETLINK_ADD_MEMBERSHIP);
netlink_table_ungrab();
+ if (optname == NETLINK_DROP_MEMBERSHIP && nlk->netlink_unbind)
+ nlk->netlink_unbind(val);
err = 0;
break;
--
1.7.1