return err;
}
#endif
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19)
+/**
+ * nlmsg_notify - send a notification netlink message
+ * @sk: netlink socket to use
+ * @skb: notification message
+ * @pid: destination netlink pid for reports or 0
+ * @group: destination multicast group or 0
+ * @report: 1 to report back, 0 to disable
+ * @flags: allocation flags
+ */
+int nlmsg_notify(struct sock *sk, struct sk_buff *skb, u32 pid,
+ unsigned int group, int report, gfp_t flags)
+{
+ int err = 0;
+
+ if (group) {
+ int exclude_pid = 0;
+
+ if (report) {
+ atomic_inc(&skb->users);
+ exclude_pid = pid;
+ }
+
+ /* errors reported via destination sk->sk_err, but propagate
+ * delivery errors if NETLINK_BROADCAST_ERROR flag is set */
+ err = nlmsg_multicast(sk, skb, exclude_pid, group, flags);
+ }
+
+ if (report) {
+ int err2;
+
+ err2 = nlmsg_unicast(sk, skb, pid);
+ if (!err || err == -ESRCH)
+ err = err2;
+ }
+
+ return err;
+}
+#endif
+
+/* This is analogous to rtnl_notify() but uses genl_sock instead of rtnl.
+ *
+ * This is not (yet) in any upstream kernel. */
+void genl_notify(struct sk_buff *skb, struct net *net, u32 pid, u32 group,
+ struct nlmsghdr *nlh, gfp_t flags)
+{
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,32)
+ struct sock *sk = net->genl_sock;
+#else
+ struct sock *sk = genl_sock;
+#endif
+ int report = 0;
+
+ if (nlh)
+ report = nlmsg_report(nlh);
+
+ nlmsg_notify(sk, skb, pid, group, report, flags);
+}
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,30)
+/* This function wasn't exported before 2.6.30. Lose! */
+void netlink_set_err(struct sock *ssk, u32 pid, u32 group, int code)
+{
+}
+#endif