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Diffstat (limited to 'net/tipc/net.c')
-rw-r--r--net/tipc/net.c56
1 files changed, 56 insertions, 0 deletions
diff --git a/net/tipc/net.c b/net/tipc/net.c
index 2de3cec9929d..85400e4242de 100644
--- a/net/tipc/net.c
+++ b/net/tipc/net.c
@@ -302,3 +302,59 @@ int tipc_nl_net_set(struct sk_buff *skb, struct genl_info *info)
return err;
}
+
+static int __tipc_nl_addr_legacy_get(struct net *net, struct tipc_nl_msg *msg)
+{
+ struct tipc_net *tn = tipc_net(net);
+ struct nlattr *attrs;
+ void *hdr;
+
+ hdr = genlmsg_put(msg->skb, msg->portid, msg->seq, &tipc_genl_family,
+ 0, TIPC_NL_ADDR_LEGACY_GET);
+ if (!hdr)
+ return -EMSGSIZE;
+
+ attrs = nla_nest_start(msg->skb, TIPC_NLA_NET);
+ if (!attrs)
+ goto msg_full;
+
+ if (tn->legacy_addr_format)
+ if (nla_put_flag(msg->skb, TIPC_NLA_NET_ADDR_LEGACY))
+ goto attr_msg_full;
+
+ nla_nest_end(msg->skb, attrs);
+ genlmsg_end(msg->skb, hdr);
+
+ return 0;
+
+attr_msg_full:
+ nla_nest_cancel(msg->skb, attrs);
+msg_full:
+ genlmsg_cancel(msg->skb, hdr);
+
+ return -EMSGSIZE;
+}
+
+int tipc_nl_net_addr_legacy_get(struct sk_buff *skb, struct genl_info *info)
+{
+ struct net *net = sock_net(skb->sk);
+ struct tipc_nl_msg msg;
+ struct sk_buff *rep;
+ int err;
+
+ rep = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
+ if (!rep)
+ return -ENOMEM;
+
+ msg.skb = rep;
+ msg.portid = info->snd_portid;
+ msg.seq = info->snd_seq;
+
+ err = __tipc_nl_addr_legacy_get(net, &msg);
+ if (err) {
+ nlmsg_free(msg.skb);
+ return err;
+ }
+
+ return genlmsg_reply(msg.skb, info);
+}