link: AF_INET link module

Note: The code for this is not upstream yet.

Extends the link api to allow address family modules to fill a link
message and implements a AF_INET address family link module which
uses the new interface.

5 files changed, 83 insertions, 1 deletions

diff --git a/include/linux/if_link.h b/include/linux/if_link.h
index 292d1cd..b60ff97 100644
--- a/include/linux/if_link.h
+++ b/include/linux/if_link.h
@@ -147,6 +147,14 @@ enum {
 #define IFLA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ifinfomsg))
 #endif
 
+enum {
+	IFLA_INET_UNSPEC,
+	IFLA_INET_CONF,
+	__IFLA_INET_MAX,
+};
+
+#define IFLA_INET_MAX (__IFLA_INET_MAX - 1)
+
 /* ifi_flags.
 
    IFF_* flags.
diff --git a/include/linux/inetdevice.h b/include/linux/inetdevice.h
new file mode 100644
index 0000000..fd4d2df
--- /dev/null
+++ b/include/linux/inetdevice.h
@@ -0,0 +1,36 @@
+#ifndef _LINUX_INETDEVICE_H
+#define _LINUX_INETDEVICE_H
+
+enum
+{
+	IPV4_DEVCONF_FORWARDING=1,
+	IPV4_DEVCONF_MC_FORWARDING,
+	IPV4_DEVCONF_PROXY_ARP,
+	IPV4_DEVCONF_ACCEPT_REDIRECTS,
+	IPV4_DEVCONF_SECURE_REDIRECTS,
+	IPV4_DEVCONF_SEND_REDIRECTS,
+	IPV4_DEVCONF_SHARED_MEDIA,
+	IPV4_DEVCONF_RP_FILTER,
+	IPV4_DEVCONF_ACCEPT_SOURCE_ROUTE,
+	IPV4_DEVCONF_BOOTP_RELAY,
+	IPV4_DEVCONF_LOG_MARTIANS,
+	IPV4_DEVCONF_TAG,
+	IPV4_DEVCONF_ARPFILTER,
+	IPV4_DEVCONF_MEDIUM_ID,
+	IPV4_DEVCONF_NOXFRM,
+	IPV4_DEVCONF_NOPOLICY,
+	IPV4_DEVCONF_FORCE_IGMP_VERSION,
+	IPV4_DEVCONF_ARP_ANNOUNCE,
+	IPV4_DEVCONF_ARP_IGNORE,
+	IPV4_DEVCONF_PROMOTE_SECONDARIES,
+	IPV4_DEVCONF_ARP_ACCEPT,
+	IPV4_DEVCONF_ARP_NOTIFY,
+	IPV4_DEVCONF_ACCEPT_LOCAL,
+	IPV4_DEVCONF_SRC_VMARK,
+	IPV4_DEVCONF_PROXY_ARP_PVLAN,
+	__IPV4_DEVCONF_MAX
+};
+
+#define IPV4_DEVCONF_MAX (__IPV4_DEVCONF_MAX - 1)
+
+#endif /* _LINUX_INETDEVICE_H */
diff --git a/include/netlink-local.h b/include/netlink-local.h
index 59f1d61..fbcf961 100644
--- a/include/netlink-local.h
+++ b/include/netlink-local.h
@@ -48,7 +48,7 @@
 #include <linux/gen_stats.h>
 #include <linux/ip_mp_alg.h>
 #include <linux/atm.h>
-
+#include <linux/inetdevice.h>
 #include <linux/ipv6.h>
 #include <linux/snmp.h>
 
diff --git a/include/netlink/route/link/api.h b/include/netlink/route/link/api.h
index 2280b4a..960d3f1 100644
--- a/include/netlink/route/link/api.h
+++ b/include/netlink/route/link/api.h
@@ -110,6 +110,11 @@ struct rtnl_link_af_ops
 	int		      (*ao_parse_af)(struct rtnl_link *,
 					     struct nlattr *, void *);
 
+	/** Called if a link message is sent to the kernel. Must append the
+	 * link address family specific attributes to the message. */
+	int		      (*ao_fill_af)(struct rtnl_link *,
+					    struct nl_msg *msg, void *);
+
 	/** Dump address family specific link attributes */
 	void		      (*ao_dump[NL_DUMP_MAX+1])(struct rtnl_link *,
 							struct nl_dump_params *,
@@ -118,6 +123,10 @@ struct rtnl_link_af_ops
 
 extern struct rtnl_link_af_ops *rtnl_link_af_ops_lookup(unsigned int);
 extern void			rtnl_link_af_ops_put(struct rtnl_link_af_ops *);
+extern void *			rtnl_link_af_alloc(struct rtnl_link *,
+						const struct rtnl_link_af_ops *);
+extern void *			rtnl_link_af_data(const struct rtnl_link *,
+						const struct rtnl_link_af_ops *);
 extern int			rtnl_link_af_register(struct rtnl_link_af_ops *);
 extern int			rtnl_link_af_unregister(struct rtnl_link_af_ops *);
 
diff --git a/include/netlink/route/link/inet.h b/include/netlink/route/link/inet.h
new file mode 100644
index 0000000..9feff37
--- /dev/null
+++ b/include/netlink/route/link/inet.h
@@ -0,0 +1,29 @@
+/*
+ * netlink/route/link/inet.h	INET Link Module
+ *
+ *	This library is free software; you can redistribute it and/or
+ *	modify it under the terms of the GNU Lesser General Public
+ *	License as published by the Free Software Foundation version 2.1
+ *	of the License.
+ *
+ * Copyright (c) 2010 Thomas Graf <tgraf@suug.ch>
+ */
+
+#ifndef NETLINK_LINK_INET_H_
+#define NETLINK_LINK_INET_H_
+
+#include <netlink/netlink.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+extern const char *	rtnl_link_inet_devconf2str(int, char *, size_t);
+extern unsigned int	rtnl_link_inet_str2devconf(const char *);
+
+extern int		rtnl_link_inet_get_conf(struct rtnl_link *,
+						const unsigned int, uint32_t *);
+extern int		rtnl_link_inet_set_conf(struct rtnl_link *,
+						const unsigned int, uint32_t);
+
+#endif