genetlink: pass family to functions using groups

This doesn't really change anything, but prepares for the
next patch that will change the APIs to pass the group ID
within the family, rather than the global group ID.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

3 files changed, 26 insertions, 15 deletions

diff --git a/net/openvswitch/datapath.c b/net/openvswitch/datapath.c
index 3e2bb15fd717..5c19846b1d2a 100644
--- a/net/openvswitch/datapath.c
+++ b/net/openvswitch/datapath.c
@@ -61,10 +61,11 @@
 
 int ovs_net_id __read_mostly;
 
-static void ovs_notify(struct sk_buff *skb, struct genl_info *info,
+static void ovs_notify(struct genl_family *family,
+                       struct sk_buff *skb, struct genl_info *info,
                        struct genl_multicast_group *grp)
 {
-        genl_notify(skb, genl_info_net(info), info->snd_portid,
+        genl_notify(family, skb, genl_info_net(info), info->snd_portid,
                     grp->id, info->nlhdr, GFP_KERNEL);
 }
 
@@ -877,9 +878,10 @@ static int ovs_flow_cmd_new_or_set(struct sk_buff *skb, struct genl_info *info)
         ovs_unlock();
 
         if (!IS_ERR(reply))
-                ovs_notify(reply, info, &ovs_dp_flow_multicast_group);
+                ovs_notify(&dp_flow_genl_family, reply, info,
+                           &ovs_dp_flow_multicast_group);
         else
-                genl_set_err(sock_net(skb->sk), 0,
+                genl_set_err(&dp_flow_genl_family, sock_net(skb->sk), 0,
                              ovs_dp_flow_multicast_group.id, PTR_ERR(reply));
         return 0;
 
@@ -990,7 +992,8 @@ static int ovs_flow_cmd_del(struct sk_buff *skb, struct genl_info *info)
         ovs_flow_free(flow, true);
         ovs_unlock();
 
-        ovs_notify(reply, info, &ovs_dp_flow_multicast_group);
+        ovs_notify(&dp_flow_genl_family, reply, info,
+                   &ovs_dp_flow_multicast_group);
         return 0;
 unlock:
         ovs_unlock();
@@ -1237,7 +1240,8 @@ static int ovs_dp_cmd_new(struct sk_buff *skb, struct genl_info *info)
 
         ovs_unlock();
 
-        ovs_notify(reply, info, &ovs_dp_datapath_multicast_group);
+        ovs_notify(&dp_datapath_genl_family, reply, info,
+                   &ovs_dp_datapath_multicast_group);
         return 0;
 
 err_destroy_local_port:
@@ -1302,7 +1306,8 @@ static int ovs_dp_cmd_del(struct sk_buff *skb, struct genl_info *info)
         __dp_destroy(dp);
         ovs_unlock();
 
-        ovs_notify(reply, info, &ovs_dp_datapath_multicast_group);
+        ovs_notify(&dp_datapath_genl_family, reply, info,
+                   &ovs_dp_datapath_multicast_group);
 
         return 0;
 unlock:
@@ -1326,14 +1331,15 @@ static int ovs_dp_cmd_set(struct sk_buff *skb, struct genl_info *info)
                                       info->snd_seq, OVS_DP_CMD_NEW);
         if (IS_ERR(reply)) {
                 err = PTR_ERR(reply);
-                genl_set_err(sock_net(skb->sk), 0,
+                genl_set_err(&dp_datapath_genl_family, sock_net(skb->sk), 0,
                              ovs_dp_datapath_multicast_group.id, err);
                 err = 0;
                 goto unlock;
         }
 
         ovs_unlock();
-        ovs_notify(reply, info, &ovs_dp_datapath_multicast_group);
+        ovs_notify(&dp_datapath_genl_family, reply, info,
+                   &ovs_dp_datapath_multicast_group);
 
         return 0;
 unlock:
@@ -1425,7 +1431,7 @@ static const struct nla_policy vport_policy[OVS_VPORT_ATTR_MAX + 1] = {
         [OVS_VPORT_ATTR_OPTIONS] = { .type = NLA_NESTED },
 };
 
-static struct genl_family dp_vport_genl_family = {
+struct genl_family dp_vport_genl_family = {
         .id = GENL_ID_GENERATE,
         .hdrsize = sizeof(struct ovs_header),
         .name = OVS_VPORT_FAMILY,
@@ -1595,7 +1601,8 @@ static int ovs_vport_cmd_new(struct sk_buff *skb, struct genl_info *info)
                 goto exit_unlock;
         }
 
-        ovs_notify(reply, info, &ovs_dp_vport_multicast_group);
+        ovs_notify(&dp_vport_genl_family, reply, info,
+                   &ovs_dp_vport_multicast_group);
 
 exit_unlock:
         ovs_unlock();
@@ -1642,7 +1649,8 @@ static int ovs_vport_cmd_set(struct sk_buff *skb, struct genl_info *info)
         BUG_ON(err < 0);
 
         ovs_unlock();
-        ovs_notify(reply, info, &ovs_dp_vport_multicast_group);
+        ovs_notify(&dp_vport_genl_family, reply, info,
+                   &ovs_dp_vport_multicast_group);
         return 0;
 
 exit_free:
@@ -1679,7 +1687,8 @@ static int ovs_vport_cmd_del(struct sk_buff *skb, struct genl_info *info)
         err = 0;
         ovs_dp_detach_port(vport);
 
-        ovs_notify(reply, info, &ovs_dp_vport_multicast_group);
+        ovs_notify(&dp_vport_genl_family, reply, info,
+                   &ovs_dp_vport_multicast_group);
 
 exit_unlock:
         ovs_unlock();
diff --git a/net/openvswitch/datapath.h b/net/openvswitch/datapath.h
index d3d14a58aa91..4067ea41be28 100644
--- a/net/openvswitch/datapath.h
+++ b/net/openvswitch/datapath.h
@@ -177,6 +177,7 @@ static inline struct vport *ovs_vport_ovsl(const struct datapath *dp, int port_n
 }
 
 extern struct notifier_block ovs_dp_device_notifier;
+extern struct genl_family dp_vport_genl_family;
 extern struct genl_multicast_group ovs_dp_vport_multicast_group;
 
 void ovs_dp_process_received_packet(struct vport *, struct sk_buff *);
diff --git a/net/openvswitch/dp_notify.c b/net/openvswitch/dp_notify.c
index 3d55ead6095c..f4b66c84ea0b 100644
--- a/net/openvswitch/dp_notify.c
+++ b/net/openvswitch/dp_notify.c
@@ -34,13 +34,14 @@ static void dp_detach_port_notify(struct vport *vport)
                                           OVS_VPORT_CMD_DEL);
         ovs_dp_detach_port(vport);
         if (IS_ERR(notify)) {
-                genl_set_err(ovs_dp_get_net(dp), 0,
+                genl_set_err(&dp_vport_genl_family, ovs_dp_get_net(dp), 0,
                              ovs_dp_vport_multicast_group.id,
                              PTR_ERR(notify));
                 return;
         }
 
-        genlmsg_multicast_netns(ovs_dp_get_net(dp), notify, 0,
+        genlmsg_multicast_netns(&dp_vport_genl_family,
+                                ovs_dp_get_net(dp), notify, 0,
                                 ovs_dp_vport_multicast_group.id,
                                 GFP_KERNEL);
 }