datapath: Add support for kernels 3.13

[sliver-openvswitch.git] / datapath / linux / compat / genetlink-openvswitch.c

diff --git a/datapath/linux/compat/genetlink-openvswitch.c b/datapath/linux/compat/genetlink-openvswitch.c
index 359f916..08f0fab 100644 (file)
--- a/datapath/linux/compat/genetlink-openvswitch.c
+++ b/datapath/linux/compat/genetlink-openvswitch.c
@@ -1,12 +1,15 @@
 #include <net/genetlink.h>
 #include <linux/version.h>
 
-/* 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 portid, u32 group,
-                struct nlmsghdr *nlh, gfp_t flags)
+#if LINUX_VERSION_CODE < KERNEL_VERSION(3,13,0)
+
+#undef genl_notify
+
+void rpl_genl_notify(struct rpl_genl_family *family, struct sk_buff *skb,
+                    struct net *net, u32 portid, u32 group,
+                    struct nlmsghdr *nlh, gfp_t flags)
 {
+#if LINUX_VERSION_CODE < KERNEL_VERSION(3,3,0)
        struct sock *sk = net->genl_sock;
        int report = 0;
 
@@ -14,4 +17,39 @@ void genl_notify(struct sk_buff *skb, struct net *net, u32 portid, u32 group,
                report = nlmsg_report(nlh);
 
        nlmsg_notify(sk, skb, portid, group, report, flags);
+#else
+       genl_notify(skb, net, portid, group, nlh, flags);
+#endif
+}
+
+int rpl___genl_register_family(struct rpl_genl_family *f)
+{
+       int err;
+
+       f->compat_family.id = f->id;
+       f->compat_family.hdrsize = f->hdrsize;
+       strncpy(f->compat_family.name, f->name, GENL_NAMSIZ);
+       f->compat_family.version = f->version;
+       f->compat_family.maxattr = f->maxattr;
+       f->compat_family.netnsok = f->netnsok;
+#ifdef HAVE_PARALLEL_OPS
+       f->compat_family.parallel_ops = f->parallel_ops;
+#endif
+       err = genl_register_family_with_ops(&f->compat_family,
+                                           (struct genl_ops *) f->ops, f->n_ops);
+       if (err)
+               goto error;
+
+       if (f->mcgrps) {
+               /* Need to Fix GROUP_ID() for more than one group. */
+               BUG_ON(f->n_mcgrps > 1);
+               err = genl_register_mc_group(&f->compat_family,
+                                            (struct genl_multicast_group *) f->mcgrps);
+               if (err)
+                       goto error;
+       }
+error:
+       return err;
+
 }
+#endif /* kernel version < 3.13.0 */