genetlink: statically initialize families

Instead of providing macros/inline functions to initialize
the families, make all users initialize them statically and
get rid of the macros.

This reduces the kernel code size by about 1.6k on x86-64
(with allyesconfig).

Signed-off-by: Johannes Berg <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

Author: jmberg-intel

drivers/acpi/event.c

@@ -83,6 +83,7 @@ static const struct genl_multicast_group acpi_event_mcgrps[] = {
 };
 
 static struct genl_family acpi_event_genl_family = {
+	.module = THIS_MODULE,
 	.name = ACPI_GENL_FAMILY_NAME,
 	.version = ACPI_GENL_VERSION,
 	.maxattr = ACPI_GENL_ATTR_MAX,

drivers/net/gtp.c

@@ -1094,13 +1094,7 @@ static int gtp_genl_del_pdp(struct sk_buff *skb, struct genl_info *info)
 	return 0;
 }
 
-static struct genl_family gtp_genl_family = {
-	.name		= "gtp",
-	.version	= 0,
-	.hdrsize	= 0,
-	.maxattr	= GTPA_MAX,
-	.netnsok	= true,
-};
+static struct genl_family gtp_genl_family;
 
 static int gtp_genl_fill_info(struct sk_buff *skb, u32 snd_portid, u32 snd_seq,
 			      u32 type, struct pdp_ctx *pctx)
@@ -1296,6 +1290,17 @@ static const struct genl_ops gtp_genl_ops[] = {
 	},
 };
 
+static struct genl_family gtp_genl_family = {
+	.name		= "gtp",
+	.version	= 0,
+	.hdrsize	= 0,
+	.maxattr	= GTPA_MAX,
+	.netnsok	= true,
+	.module		= THIS_MODULE,
+	.ops		= gtp_genl_ops,
+	.n_ops		= ARRAY_SIZE(gtp_genl_ops),
+};
+
 static int __net_init gtp_net_init(struct net *net)
 {
 	struct gtp_net *gn = net_generic(net, gtp_net_id);
@@ -1335,7 +1340,7 @@ static int __init gtp_init(void)
 	if (err < 0)
 		goto error_out;
 
-	err = genl_register_family_with_ops(&gtp_genl_family, gtp_genl_ops);
+	err = genl_register_family(&gtp_genl_family);
 	if (err < 0)
 		goto unreg_rtnl_link;
 

drivers/net/macsec.c

@@ -1421,13 +1421,7 @@ static void clear_tx_sa(struct macsec_tx_sa *tx_sa)
 	macsec_txsa_put(tx_sa);
 }
 
-static struct genl_family macsec_fam = {
-	.name		= MACSEC_GENL_NAME,
-	.hdrsize	= 0,
-	.version	= MACSEC_GENL_VERSION,
-	.maxattr	= MACSEC_ATTR_MAX,
-	.netnsok	= true,
-};
+static struct genl_family macsec_fam;
 
 static struct net_device *get_dev_from_nl(struct net *net,
 					  struct nlattr **attrs)
@@ -2654,6 +2648,17 @@ static const struct genl_ops macsec_genl_ops[] = {
 	},
 };
 
+static struct genl_family macsec_fam = {
+	.name		= MACSEC_GENL_NAME,
+	.hdrsize	= 0,
+	.version	= MACSEC_GENL_VERSION,
+	.maxattr	= MACSEC_ATTR_MAX,
+	.netnsok	= true,
+	.module		= THIS_MODULE,
+	.ops		= macsec_genl_ops,
+	.n_ops		= ARRAY_SIZE(macsec_genl_ops),
+};
+
 static netdev_tx_t macsec_start_xmit(struct sk_buff *skb,
 				     struct net_device *dev)
 {
@@ -3461,7 +3466,7 @@ static int __init macsec_init(void)
 	if (err)
 		goto notifier;
 
-	err = genl_register_family_with_ops(&macsec_fam, macsec_genl_ops);
+	err = genl_register_family(&macsec_fam);
 	if (err)
 		goto rtnl;
 

drivers/net/team/team.c

@@ -2150,12 +2150,7 @@ static struct rtnl_link_ops team_link_ops __read_mostly = {
  * Generic netlink custom interface
  ***********************************/
 
-static struct genl_family team_nl_family = {
-	.name		= TEAM_GENL_NAME,
-	.version	= TEAM_GENL_VERSION,
-	.maxattr	= TEAM_ATTR_MAX,
-	.netnsok	= true,
-};
+static struct genl_family team_nl_family;
 
 static const struct nla_policy team_nl_policy[TEAM_ATTR_MAX + 1] = {
 	[TEAM_ATTR_UNSPEC]			= { .type = NLA_UNSPEC, },
@@ -2745,6 +2740,18 @@ static const struct genl_multicast_group team_nl_mcgrps[] = {
 	{ .name = TEAM_GENL_CHANGE_EVENT_MC_GRP_NAME, },
 };
 
+static struct genl_family team_nl_family = {
+	.name		= TEAM_GENL_NAME,
+	.version	= TEAM_GENL_VERSION,
+	.maxattr	= TEAM_ATTR_MAX,
+	.netnsok	= true,
+	.module		= THIS_MODULE,
+	.ops		= team_nl_ops,
+	.n_ops		= ARRAY_SIZE(team_nl_ops),
+	.mcgrps		= team_nl_mcgrps,
+	.n_mcgrps	= ARRAY_SIZE(team_nl_mcgrps),
+};
+
 static int team_nl_send_multicast(struct sk_buff *skb,
 				  struct team *team, u32 portid)
 {
@@ -2768,8 +2775,7 @@ static int team_nl_send_event_port_get(struct team *team,
 
 static int team_nl_init(void)
 {
-	return genl_register_family_with_ops_groups(&team_nl_family, team_nl_ops,
-						    team_nl_mcgrps);
+	return genl_register_family(&team_nl_family);
 }
 
 static void team_nl_fini(void)

drivers/net/wireless/mac80211_hwsim.c

@@ -587,14 +587,8 @@ struct hwsim_radiotap_ack_hdr {
 	__le16 rt_chbitmask;
 } __packed;
 
-/* MAC80211_HWSIM netlinf family */
-static struct genl_family hwsim_genl_family = {
-	.hdrsize = 0,
-	.name = "MAC80211_HWSIM",
-	.version = 1,
-	.maxattr = HWSIM_ATTR_MAX,
-	.netnsok = true,
-};
+/* MAC80211_HWSIM netlink family */
+static struct genl_family hwsim_genl_family;
 
 enum hwsim_multicast_groups {
 	HWSIM_MCGRP_CONFIG,
@@ -3234,6 +3228,18 @@ static const struct genl_ops hwsim_ops[] = {
 	},
 };
 
+static struct genl_family hwsim_genl_family = {
+	.name = "MAC80211_HWSIM",
+	.version = 1,
+	.maxattr = HWSIM_ATTR_MAX,
+	.netnsok = true,
+	.module = THIS_MODULE,
+	.ops = hwsim_ops,
+	.n_ops = ARRAY_SIZE(hwsim_ops),
+	.mcgrps = hwsim_mcgrps,
+	.n_mcgrps = ARRAY_SIZE(hwsim_mcgrps),
+};
+
 static void destroy_radio(struct work_struct *work)
 {
 	struct mac80211_hwsim_data *data =
@@ -3287,9 +3293,7 @@ static int hwsim_init_netlink(void)
 
 	printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
 
-	rc = genl_register_family_with_ops_groups(&hwsim_genl_family,
-						  hwsim_ops,
-						  hwsim_mcgrps);
+	rc = genl_register_family(&hwsim_genl_family);
 	if (rc)
 		goto failure;
 

drivers/scsi/pmcraid.c

@@ -1369,6 +1369,7 @@ static struct genl_multicast_group pmcraid_mcgrps[] = {
 };
 
 static struct genl_family pmcraid_event_family = {
+	.module = THIS_MODULE,
 	.name = "pmcraid",
 	.version = 1,
 	.maxattr = PMCRAID_AEN_ATTR_MAX,

drivers/target/target_core_user.c

@@ -148,6 +148,7 @@ static const struct genl_multicast_group tcmu_mcgrps[] = {
 
 /* Our generic netlink family */
 static struct genl_family tcmu_genl_family = {
+	.module = THIS_MODULE,
 	.hdrsize = 0,
 	.name = "TCM-USER",
 	.version = 1,

drivers/thermal/thermal_core.c

@@ -2164,6 +2164,7 @@ static const struct genl_multicast_group thermal_event_mcgrps[] = {
 };
 
 static struct genl_family thermal_event_genl_family = {
+	.module = THIS_MODULE,
 	.name = THERMAL_GENL_FAMILY_NAME,
 	.version = THERMAL_GENL_VERSION,
 	.maxattr = THERMAL_GENL_ATTR_MAX,

fs/dlm/netlink.c

@@ -16,10 +16,7 @@
 static uint32_t dlm_nl_seqnum;
 static uint32_t listener_nlportid;
 
-static struct genl_family family = {
-	.name		= DLM_GENL_NAME,
-	.version	= DLM_GENL_VERSION,
-};
+static struct genl_family family;
 
 static int prepare_data(u8 cmd, struct sk_buff **skbp, size_t size)
 {
@@ -75,9 +72,17 @@ static struct genl_ops dlm_nl_ops[] = {
 	},
 };
 
+static struct genl_family family = {
+	.name		= DLM_GENL_NAME,
+	.version	= DLM_GENL_VERSION,
+	.ops		= dlm_nl_ops,
+	.n_ops		= ARRAY_SIZE(dlm_nl_ops),
+	.module		= THIS_MODULE,
+};
+
 int __init dlm_netlink_init(void)
 {
-	return genl_register_family_with_ops(&family, dlm_nl_ops);
+	return genl_register_family(&family);
 }
 
 void dlm_netlink_exit(void)

fs/quota/netlink.c

@@ -13,6 +13,7 @@ static const struct genl_multicast_group quota_mcgrps[] = {
 
 /* Netlink family structure for quota */
 static struct genl_family quota_genl_family = {
+	.module = THIS_MODULE,
 	.hdrsize = 0,
 	.name = "VFS_DQUOT",
 	.version = 1,

include/linux/drbd_genl.h

@@ -67,7 +67,7 @@
  *	genl_magic_func.h
  *		generates an entry in the static genl_ops array,
  *		and static register/unregister functions to
- *		genl_register_family_with_ops().
+ *		genl_register_family().
  *
  *	flags and handler:
  *		GENL_op_init( .doit = x, .dumpit = y, .flags = something)

include/linux/genl_magic_func.h

@@ -259,15 +259,7 @@ static struct genl_ops ZZZ_genl_ops[] __read_mostly = {
  *									{{{2
  */
 #define ZZZ_genl_family		CONCAT_(GENL_MAGIC_FAMILY, _genl_family)
-static struct genl_family ZZZ_genl_family __read_mostly = {
-	.name = __stringify(GENL_MAGIC_FAMILY),
-	.version = GENL_MAGIC_VERSION,
-#ifdef GENL_MAGIC_FAMILY_HDRSZ
-	.hdrsize = NLA_ALIGN(GENL_MAGIC_FAMILY_HDRSZ),
-#endif
-	.maxattr = ARRAY_SIZE(drbd_tla_nl_policy)-1,
-};
-
+static struct genl_family ZZZ_genl_family;
 /*
  * Magic: define multicast groups
  * Magic: define multicast group registration helper
@@ -301,11 +293,23 @@ static int CONCAT_(GENL_MAGIC_FAMILY, _genl_multicast_ ## group)(	\
 #undef GENL_mc_group
 #define GENL_mc_group(group)
 
+static struct genl_family ZZZ_genl_family __read_mostly = {
+	.name = __stringify(GENL_MAGIC_FAMILY),
+	.version = GENL_MAGIC_VERSION,
+#ifdef GENL_MAGIC_FAMILY_HDRSZ
+	.hdrsize = NLA_ALIGN(GENL_MAGIC_FAMILY_HDRSZ),
+#endif
+	.maxattr = ARRAY_SIZE(drbd_tla_nl_policy)-1,
+	.ops = ZZZ_genl_ops,
+	.n_ops = ARRAY_SIZE(ZZZ_genl_ops),
+	.mcgrps = ZZZ_genl_mcgrps,
+	.n_mcgrps = ARRAY_SIZE(ZZZ_genl_mcgrps),
+	.module = THIS_MODULE,
+};
+
 int CONCAT_(GENL_MAGIC_FAMILY, _genl_register)(void)
 {
-	return genl_register_family_with_ops_groups(&ZZZ_genl_family,	\
-						    ZZZ_genl_ops,	\
-						    ZZZ_genl_mcgrps);
+	return genl_register_family(&ZZZ_genl_family);
 }
 
 void CONCAT_(GENL_MAGIC_FAMILY, _genl_unregister)(void)

include/net/genetlink.h

@@ -39,13 +39,14 @@ struct genl_info;
  *	Note that unbind() will not be called symmetrically if the
  *	generic netlink family is removed while there are still open
  *	sockets.
- * @attrbuf: buffer to store parsed attributes
- * @family_list: family list
- * @mcgrps: multicast groups used by this family (private)
- * @n_mcgrps: number of multicast groups (private)
+ * @attrbuf: buffer to store parsed attributes (private)
+ * @family_list: family list (private)
+ * @mcgrps: multicast groups used by this family
+ * @n_mcgrps: number of multicast groups
  * @mcgrp_offset: starting number of multicast group IDs in this family
- * @ops: the operations supported by this family (private)
- * @n_ops: number of operations supported by this family (private)
+ *	(private)
+ * @ops: the operations supported by this family
+ * @n_ops: number of operations supported by this family
  */
 struct genl_family {
 	unsigned int		id;		/* private */
@@ -64,10 +65,10 @@ struct genl_family {
 	int			(*mcast_bind)(struct net *net, int group);
 	void			(*mcast_unbind)(struct net *net, int group);
 	struct nlattr **	attrbuf;	/* private */
-	const struct genl_ops *	ops;		/* private */
-	const struct genl_multicast_group *mcgrps; /* private */
-	unsigned int		n_ops;		/* private */
-	unsigned int		n_mcgrps;	/* private */
+	const struct genl_ops *	ops;
+	const struct genl_multicast_group *mcgrps;
+	unsigned int		n_ops;
+	unsigned int		n_mcgrps;
 	unsigned int		mcgrp_offset;	/* private */
 	struct list_head	family_list;	/* private */
 	struct module		*module;
@@ -132,55 +133,7 @@ struct genl_ops {
 	u8			flags;
 };
 
-int __genl_register_family(struct genl_family *family);
-
-static inline int genl_register_family(struct genl_family *family)
-{
-	family->module = THIS_MODULE;
-	return __genl_register_family(family);
-}
-
-/**
- * genl_register_family_with_ops - register a generic netlink family with ops
- * @family: generic netlink family
- * @ops: operations to be registered
- * @n_ops: number of elements to register
- *
- * Registers the specified family and operations from the specified table.
- * Only one family may be registered with the same family name or identifier.
- *
- * Either a doit or dumpit callback must be specified for every registered
- * operation or the function will fail. Only one operation structure per
- * command identifier may be registered.
- *
- * See include/net/genetlink.h for more documenation on the operations
- * structure.
- *
- * Return 0 on success or a negative error code.
- */
-static inline int
-_genl_register_family_with_ops_grps(struct genl_family *family,
-				    const struct genl_ops *ops, size_t n_ops,
-				    const struct genl_multicast_group *mcgrps,
-				    size_t n_mcgrps)
-{
-	family->module = THIS_MODULE;
-	family->ops = ops;
-	family->n_ops = n_ops;
-	family->mcgrps = mcgrps;
-	family->n_mcgrps = n_mcgrps;
-	return __genl_register_family(family);
-}
-
-#define genl_register_family_with_ops(family, ops)			\
-	_genl_register_family_with_ops_grps((family),			\
-					    (ops), ARRAY_SIZE(ops),	\
-					    NULL, 0)
-#define genl_register_family_with_ops_groups(family, ops, grps)	\
-	_genl_register_family_with_ops_grps((family),			\
-					    (ops), ARRAY_SIZE(ops),	\
-					    (grps), ARRAY_SIZE(grps))
-
+int genl_register_family(struct genl_family *family);
 int genl_unregister_family(struct genl_family *family);
 void genl_notify(struct genl_family *family, struct sk_buff *skb,
 		 struct genl_info *info, u32 group, gfp_t flags);