devlink: Split out health reporter create code

Move devlink health reporter create/destroy and related dev code to new
file health.c. This file shall include all callbacks and functionality
that are related to devlink health.

In addition, fix kdoc indentation and make reporter create/destroy kdoc
more clear. No functional change in this patch.

Signed-off-by: Moshe Shemesh <moshe@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

4 files changed, 226 insertions, 209 deletions

diff --git a/net/devlink/Makefile b/net/devlink/Makefile
index daad4521c61ee..ef91a76646a33 100644
--- a/net/devlink/Makefile
+++ b/net/devlink/Makefile
@@ -1,3 +1,3 @@
 # SPDX-License-Identifier: GPL-2.0
 
-obj-y := leftover.o core.o netlink.o dev.o
+obj-y := leftover.o core.o netlink.o dev.o health.o
diff --git a/net/devlink/devl_internal.h b/net/devlink/devl_internal.h
index 2f4820e40d27f..49fe9e2dae34e 100644
--- a/net/devlink/devl_internal.h
+++ b/net/devlink/devl_internal.h
@@ -198,6 +198,34 @@ int devlink_resources_validate(struct devlink *devlink,
 			       struct devlink_resource *resource,
 			       struct genl_info *info);
 
+/* Health */
+struct devlink_health_reporter {
+	struct list_head list;
+	void *priv;
+	const struct devlink_health_reporter_ops *ops;
+	struct devlink *devlink;
+	struct devlink_port *devlink_port;
+	struct devlink_fmsg *dump_fmsg;
+	struct mutex dump_lock; /* lock parallel read/write from dump buffers */
+	u64 graceful_period;
+	bool auto_recover;
+	bool auto_dump;
+	u8 health_state;
+	u64 dump_ts;
+	u64 dump_real_ts;
+	u64 error_count;
+	u64 recovery_count;
+	u64 last_recovery_ts;
+};
+
+struct devlink_health_reporter *
+devlink_health_reporter_find_by_name(struct devlink *devlink,
+				     const char *reporter_name);
+struct devlink_health_reporter *
+devlink_port_health_reporter_find_by_name(struct devlink_port *devlink_port,
+					  const char *reporter_name);
+void devlink_fmsg_free(struct devlink_fmsg *fmsg);
+
 /* Line cards */
 struct devlink_linecard;
 
diff --git a/net/devlink/health.c b/net/devlink/health.c
new file mode 100644
index 0000000000000..18d1f38380b3d
--- /dev/null
+++ b/net/devlink/health.c
@@ -0,0 +1,196 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (c) 2016 Mellanox Technologies. All rights reserved.
+ * Copyright (c) 2016 Jiri Pirko <jiri@mellanox.com>
+ */
+
+#include <net/genetlink.h>
+#include "devl_internal.h"
+
+void *
+devlink_health_reporter_priv(struct devlink_health_reporter *reporter)
+{
+	return reporter->priv;
+}
+EXPORT_SYMBOL_GPL(devlink_health_reporter_priv);
+
+static struct devlink_health_reporter *
+__devlink_health_reporter_find_by_name(struct list_head *reporter_list,
+				       const char *reporter_name)
+{
+	struct devlink_health_reporter *reporter;
+
+	list_for_each_entry(reporter, reporter_list, list)
+		if (!strcmp(reporter->ops->name, reporter_name))
+			return reporter;
+	return NULL;
+}
+
+struct devlink_health_reporter *
+devlink_health_reporter_find_by_name(struct devlink *devlink,
+				     const char *reporter_name)
+{
+	return __devlink_health_reporter_find_by_name(&devlink->reporter_list,
+						      reporter_name);
+}
+
+struct devlink_health_reporter *
+devlink_port_health_reporter_find_by_name(struct devlink_port *devlink_port,
+					  const char *reporter_name)
+{
+	return __devlink_health_reporter_find_by_name(&devlink_port->reporter_list,
+						      reporter_name);
+}
+
+static struct devlink_health_reporter *
+__devlink_health_reporter_create(struct devlink *devlink,
+				 const struct devlink_health_reporter_ops *ops,
+				 u64 graceful_period, void *priv)
+{
+	struct devlink_health_reporter *reporter;
+
+	if (WARN_ON(graceful_period && !ops->recover))
+		return ERR_PTR(-EINVAL);
+
+	reporter = kzalloc(sizeof(*reporter), GFP_KERNEL);
+	if (!reporter)
+		return ERR_PTR(-ENOMEM);
+
+	reporter->priv = priv;
+	reporter->ops = ops;
+	reporter->devlink = devlink;
+	reporter->graceful_period = graceful_period;
+	reporter->auto_recover = !!ops->recover;
+	reporter->auto_dump = !!ops->dump;
+	mutex_init(&reporter->dump_lock);
+	return reporter;
+}
+
+/**
+ * devl_port_health_reporter_create() - create devlink health reporter for
+ *                                      specified port instance
+ *
+ * @port: devlink_port to which health reports will relate
+ * @ops: devlink health reporter ops
+ * @graceful_period: min time (in msec) between recovery attempts
+ * @priv: driver priv pointer
+ */
+struct devlink_health_reporter *
+devl_port_health_reporter_create(struct devlink_port *port,
+				 const struct devlink_health_reporter_ops *ops,
+				 u64 graceful_period, void *priv)
+{
+	struct devlink_health_reporter *reporter;
+
+	devl_assert_locked(port->devlink);
+
+	if (__devlink_health_reporter_find_by_name(&port->reporter_list,
+						   ops->name))
+		return ERR_PTR(-EEXIST);
+
+	reporter = __devlink_health_reporter_create(port->devlink, ops,
+						    graceful_period, priv);
+	if (IS_ERR(reporter))
+		return reporter;
+
+	reporter->devlink_port = port;
+	list_add_tail(&reporter->list, &port->reporter_list);
+	return reporter;
+}
+EXPORT_SYMBOL_GPL(devl_port_health_reporter_create);
+
+struct devlink_health_reporter *
+devlink_port_health_reporter_create(struct devlink_port *port,
+				    const struct devlink_health_reporter_ops *ops,
+				    u64 graceful_period, void *priv)
+{
+	struct devlink_health_reporter *reporter;
+	struct devlink *devlink = port->devlink;
+
+	devl_lock(devlink);
+	reporter = devl_port_health_reporter_create(port, ops,
+						    graceful_period, priv);
+	devl_unlock(devlink);
+	return reporter;
+}
+EXPORT_SYMBOL_GPL(devlink_port_health_reporter_create);
+
+/**
+ * devl_health_reporter_create - create devlink health reporter
+ *
+ * @devlink: devlink instance which the health reports will relate
+ * @ops: devlink health reporter ops
+ * @graceful_period: min time (in msec) between recovery attempts
+ * @priv: driver priv pointer
+ */
+struct devlink_health_reporter *
+devl_health_reporter_create(struct devlink *devlink,
+			    const struct devlink_health_reporter_ops *ops,
+			    u64 graceful_period, void *priv)
+{
+	struct devlink_health_reporter *reporter;
+
+	devl_assert_locked(devlink);
+
+	if (devlink_health_reporter_find_by_name(devlink, ops->name))
+		return ERR_PTR(-EEXIST);
+
+	reporter = __devlink_health_reporter_create(devlink, ops,
+						    graceful_period, priv);
+	if (IS_ERR(reporter))
+		return reporter;
+
+	list_add_tail(&reporter->list, &devlink->reporter_list);
+	return reporter;
+}
+EXPORT_SYMBOL_GPL(devl_health_reporter_create);
+
+struct devlink_health_reporter *
+devlink_health_reporter_create(struct devlink *devlink,
+			       const struct devlink_health_reporter_ops *ops,
+			       u64 graceful_period, void *priv)
+{
+	struct devlink_health_reporter *reporter;
+
+	devl_lock(devlink);
+	reporter = devl_health_reporter_create(devlink, ops,
+					       graceful_period, priv);
+	devl_unlock(devlink);
+	return reporter;
+}
+EXPORT_SYMBOL_GPL(devlink_health_reporter_create);
+
+static void
+devlink_health_reporter_free(struct devlink_health_reporter *reporter)
+{
+	mutex_destroy(&reporter->dump_lock);
+	if (reporter->dump_fmsg)
+		devlink_fmsg_free(reporter->dump_fmsg);
+	kfree(reporter);
+}
+
+/**
+ * devl_health_reporter_destroy() - destroy devlink health reporter
+ *
+ * @reporter: devlink health reporter to destroy
+ */
+void
+devl_health_reporter_destroy(struct devlink_health_reporter *reporter)
+{
+	devl_assert_locked(reporter->devlink);
+
+	list_del(&reporter->list);
+	devlink_health_reporter_free(reporter);
+}
+EXPORT_SYMBOL_GPL(devl_health_reporter_destroy);
+
+void
+devlink_health_reporter_destroy(struct devlink_health_reporter *reporter)
+{
+	struct devlink *devlink = reporter->devlink;
+
+	devl_lock(devlink);
+	devl_health_reporter_destroy(reporter);
+	devl_unlock(devlink);
+}
+EXPORT_SYMBOL_GPL(devlink_health_reporter_destroy);
diff --git a/net/devlink/leftover.c b/net/devlink/leftover.c
index 3569706c49e11..cfd1b90a0fc19 100644
--- a/net/devlink/leftover.c
+++ b/net/devlink/leftover.c
@@ -5403,7 +5403,7 @@ static struct devlink_fmsg *devlink_fmsg_alloc(void)
 	return fmsg;
 }
 
-static void devlink_fmsg_free(struct devlink_fmsg *fmsg)
+void devlink_fmsg_free(struct devlink_fmsg *fmsg)
 {
 	struct devlink_fmsg_item *item, *tmp;
 
@@ -5963,213 +5963,6 @@ nla_put_failure:
 	return err;
 }
 
-struct devlink_health_reporter {
-	struct list_head list;
-	void *priv;
-	const struct devlink_health_reporter_ops *ops;
-	struct devlink *devlink;
-	struct devlink_port *devlink_port;
-	struct devlink_fmsg *dump_fmsg;
-	struct mutex dump_lock; /* lock parallel read/write from dump buffers */
-	u64 graceful_period;
-	bool auto_recover;
-	bool auto_dump;
-	u8 health_state;
-	u64 dump_ts;
-	u64 dump_real_ts;
-	u64 error_count;
-	u64 recovery_count;
-	u64 last_recovery_ts;
-};
-
-void *
-devlink_health_reporter_priv(struct devlink_health_reporter *reporter)
-{
-	return reporter->priv;
-}
-EXPORT_SYMBOL_GPL(devlink_health_reporter_priv);
-
-static struct devlink_health_reporter *
-__devlink_health_reporter_find_by_name(struct list_head *reporter_list,
-				       const char *reporter_name)
-{
-	struct devlink_health_reporter *reporter;
-
-	list_for_each_entry(reporter, reporter_list, list)
-		if (!strcmp(reporter->ops->name, reporter_name))
-			return reporter;
-	return NULL;
-}
-
-static struct devlink_health_reporter *
-devlink_health_reporter_find_by_name(struct devlink *devlink,
-				     const char *reporter_name)
-{
-	return __devlink_health_reporter_find_by_name(&devlink->reporter_list,
-						      reporter_name);
-}
-
-static struct devlink_health_reporter *
-devlink_port_health_reporter_find_by_name(struct devlink_port *devlink_port,
-					  const char *reporter_name)
-{
-	return __devlink_health_reporter_find_by_name(&devlink_port->reporter_list,
-						      reporter_name);
-}
-
-static struct devlink_health_reporter *
-__devlink_health_reporter_create(struct devlink *devlink,
-				 const struct devlink_health_reporter_ops *ops,
-				 u64 graceful_period, void *priv)
-{
-	struct devlink_health_reporter *reporter;
-
-	if (WARN_ON(graceful_period && !ops->recover))
-		return ERR_PTR(-EINVAL);
-
-	reporter = kzalloc(sizeof(*reporter), GFP_KERNEL);
-	if (!reporter)
-		return ERR_PTR(-ENOMEM);
-
-	reporter->priv = priv;
-	reporter->ops = ops;
-	reporter->devlink = devlink;
-	reporter->graceful_period = graceful_period;
-	reporter->auto_recover = !!ops->recover;
-	reporter->auto_dump = !!ops->dump;
-	mutex_init(&reporter->dump_lock);
-	return reporter;
-}
-
-/**
- *	devl_port_health_reporter_create - create devlink health reporter for
- *	                                   specified port instance
- *
- *	@port: devlink_port which should contain the new reporter
- *	@ops: ops
- *	@graceful_period: to avoid recovery loops, in msecs
- *	@priv: priv
- */
-struct devlink_health_reporter *
-devl_port_health_reporter_create(struct devlink_port *port,
-				 const struct devlink_health_reporter_ops *ops,
-				 u64 graceful_period, void *priv)
-{
-	struct devlink_health_reporter *reporter;
-
-	devl_assert_locked(port->devlink);
-
-	if (__devlink_health_reporter_find_by_name(&port->reporter_list,
-						   ops->name))
-		return ERR_PTR(-EEXIST);
-
-	reporter = __devlink_health_reporter_create(port->devlink, ops,
-						    graceful_period, priv);
-	if (IS_ERR(reporter))
-		return reporter;
-
-	reporter->devlink_port = port;
-	list_add_tail(&reporter->list, &port->reporter_list);
-	return reporter;
-}
-EXPORT_SYMBOL_GPL(devl_port_health_reporter_create);
-
-struct devlink_health_reporter *
-devlink_port_health_reporter_create(struct devlink_port *port,
-				    const struct devlink_health_reporter_ops *ops,
-				    u64 graceful_period, void *priv)
-{
-	struct devlink_health_reporter *reporter;
-	struct devlink *devlink = port->devlink;
-
-	devl_lock(devlink);
-	reporter = devl_port_health_reporter_create(port, ops,
-						    graceful_period, priv);
-	devl_unlock(devlink);
-	return reporter;
-}
-EXPORT_SYMBOL_GPL(devlink_port_health_reporter_create);
-
-/**
- *	devl_health_reporter_create - create devlink health reporter
- *
- *	@devlink: devlink
- *	@ops: ops
- *	@graceful_period: to avoid recovery loops, in msecs
- *	@priv: priv
- */
-struct devlink_health_reporter *
-devl_health_reporter_create(struct devlink *devlink,
-			    const struct devlink_health_reporter_ops *ops,
-			    u64 graceful_period, void *priv)
-{
-	struct devlink_health_reporter *reporter;
-
-	devl_assert_locked(devlink);
-
-	if (devlink_health_reporter_find_by_name(devlink, ops->name))
-		return ERR_PTR(-EEXIST);
-
-	reporter = __devlink_health_reporter_create(devlink, ops,
-						    graceful_period, priv);
-	if (IS_ERR(reporter))
-		return reporter;
-
-	list_add_tail(&reporter->list, &devlink->reporter_list);
-	return reporter;
-}
-EXPORT_SYMBOL_GPL(devl_health_reporter_create);
-
-struct devlink_health_reporter *
-devlink_health_reporter_create(struct devlink *devlink,
-			       const struct devlink_health_reporter_ops *ops,
-			       u64 graceful_period, void *priv)
-{
-	struct devlink_health_reporter *reporter;
-
-	devl_lock(devlink);
-	reporter = devl_health_reporter_create(devlink, ops,
-					       graceful_period, priv);
-	devl_unlock(devlink);
-	return reporter;
-}
-EXPORT_SYMBOL_GPL(devlink_health_reporter_create);
-
-static void
-devlink_health_reporter_free(struct devlink_health_reporter *reporter)
-{
-	mutex_destroy(&reporter->dump_lock);
-	if (reporter->dump_fmsg)
-		devlink_fmsg_free(reporter->dump_fmsg);
-	kfree(reporter);
-}
-
-/**
- *	devl_health_reporter_destroy - destroy devlink health reporter
- *
- *	@reporter: devlink health reporter to destroy
- */
-void
-devl_health_reporter_destroy(struct devlink_health_reporter *reporter)
-{
-	devl_assert_locked(reporter->devlink);
-
-	list_del(&reporter->list);
-	devlink_health_reporter_free(reporter);
-}
-EXPORT_SYMBOL_GPL(devl_health_reporter_destroy);
-
-void
-devlink_health_reporter_destroy(struct devlink_health_reporter *reporter)
-{
-	struct devlink *devlink = reporter->devlink;
-
-	devl_lock(devlink);
-	devl_health_reporter_destroy(reporter);
-	devl_unlock(devlink);
-}
-EXPORT_SYMBOL_GPL(devlink_health_reporter_destroy);
-
 static int
 devlink_nl_health_reporter_fill(struct sk_buff *msg,
 				struct devlink_health_reporter *reporter,