Merging upstream version 6.7.12.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

7 files changed, 53 insertions, 23 deletions

diff --git a/net/devlink/core.c b/net/devlink/core.c
index bc3d265fe2..7f0b093208 100644
--- a/net/devlink/core.c
+++ b/net/devlink/core.c
@@ -503,14 +503,14 @@ static void __net_exit devlink_pernet_pre_exit(struct net *net)
 	 * all devlink instances from this namespace into init_net.
 	 */
 	devlinks_xa_for_each_registered_get(net, index, devlink) {
-		devl_lock(devlink);
+		devl_dev_lock(devlink, true);
 		err = 0;
 		if (devl_is_registered(devlink))
 			err = devlink_reload(devlink, &init_net,
 					     DEVLINK_RELOAD_ACTION_DRIVER_REINIT,
 					     DEVLINK_RELOAD_LIMIT_UNSPEC,
 					     &actions_performed, NULL);
-		devl_unlock(devlink);
+		devl_dev_unlock(devlink, true);
 		devlink_put(devlink);
 		if (err && err != -EOPNOTSUPP)
 			pr_warn("Failed to reload devlink instance into init_net\n");
diff --git a/net/devlink/devl_internal.h b/net/devlink/devl_internal.h
index 183dbe3807..5ea2e2012e 100644
--- a/net/devlink/devl_internal.h
+++ b/net/devlink/devl_internal.h
@@ -3,6 +3,7 @@
  * Copyright (c) 2016 Jiri Pirko <jiri@mellanox.com>
  */
 
+#include <linux/device.h>
 #include <linux/etherdevice.h>
 #include <linux/mutex.h>
 #include <linux/netdevice.h>
@@ -96,6 +97,20 @@ static inline bool devl_is_registered(struct devlink *devlink)
 	return xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED);
 }
 
+static inline void devl_dev_lock(struct devlink *devlink, bool dev_lock)
+{
+	if (dev_lock)
+		device_lock(devlink->dev);
+	devl_lock(devlink);
+}
+
+static inline void devl_dev_unlock(struct devlink *devlink, bool dev_lock)
+{
+	devl_unlock(devlink);
+	if (dev_lock)
+		device_unlock(devlink->dev);
+}
+
 typedef void devlink_rel_notify_cb_t(struct devlink *devlink, u32 obj_index);
 typedef void devlink_rel_cleanup_cb_t(struct devlink *devlink, u32 obj_index,
 				      u32 rel_index);
@@ -111,9 +126,6 @@ int devlink_rel_devlink_handle_put(struct sk_buff *msg, struct devlink *devlink,
 				   bool *msg_updated);
 
 /* Netlink */
-#define DEVLINK_NL_FLAG_NEED_PORT		BIT(0)
-#define DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT	BIT(1)
-
 enum devlink_multicast_groups {
 	DEVLINK_MCGRP_CONFIG,
 };
@@ -140,7 +152,8 @@ typedef int devlink_nl_dump_one_func_t(struct sk_buff *msg,
 				       int flags);
 
 struct devlink *
-devlink_get_from_attrs_lock(struct net *net, struct nlattr **attrs);
+devlink_get_from_attrs_lock(struct net *net, struct nlattr **attrs,
+			    bool dev_lock);
 
 int devlink_nl_dumpit(struct sk_buff *msg, struct netlink_callback *cb,
 		      devlink_nl_dump_one_func_t *dump_one);
diff --git a/net/devlink/health.c b/net/devlink/health.c
index 695df61f8a..71ae121dc7 100644
--- a/net/devlink/health.c
+++ b/net/devlink/health.c
@@ -1151,7 +1151,8 @@ devlink_health_reporter_get_from_cb_lock(struct netlink_callback *cb)
 	struct nlattr **attrs = info->attrs;
 	struct devlink *devlink;
 
-	devlink = devlink_get_from_attrs_lock(sock_net(cb->skb->sk), attrs);
+	devlink = devlink_get_from_attrs_lock(sock_net(cb->skb->sk), attrs,
+					      false);
 	if (IS_ERR(devlink))
 		return NULL;
 
diff --git a/net/devlink/netlink.c b/net/devlink/netlink.c
index d0b90ebc8b..0f41fded6a 100644
--- a/net/devlink/netlink.c
+++ b/net/devlink/netlink.c
@@ -9,6 +9,10 @@
 
 #include "devl_internal.h"
 
+#define DEVLINK_NL_FLAG_NEED_PORT		BIT(0)
+#define DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT	BIT(1)
+#define DEVLINK_NL_FLAG_NEED_DEV_LOCK		BIT(2)
+
 static const struct genl_multicast_group devlink_nl_mcgrps[] = {
 	[DEVLINK_MCGRP_CONFIG] = { .name = DEVLINK_GENL_MCGRP_CONFIG_NAME },
 };
@@ -61,7 +65,8 @@ int devlink_nl_msg_reply_and_new(struct sk_buff **msg, struct genl_info *info)
 }
 
 struct devlink *
-devlink_get_from_attrs_lock(struct net *net, struct nlattr **attrs)
+devlink_get_from_attrs_lock(struct net *net, struct nlattr **attrs,
+			    bool dev_lock)
 {
 	struct devlink *devlink;
 	unsigned long index;
@@ -75,12 +80,13 @@ devlink_get_from_attrs_lock(struct net *net, struct nlattr **attrs)
 	devname = nla_data(attrs[DEVLINK_ATTR_DEV_NAME]);
 
 	devlinks_xa_for_each_registered_get(net, index, devlink) {
-		devl_lock(devlink);
-		if (devl_is_registered(devlink) &&
-		    strcmp(devlink->dev->bus->name, busname) == 0 &&
-		    strcmp(dev_name(devlink->dev), devname) == 0)
-			return devlink;
-		devl_unlock(devlink);
+		if (strcmp(devlink->dev->bus->name, busname) == 0 &&
+		    strcmp(dev_name(devlink->dev), devname) == 0) {
+			devl_dev_lock(devlink, dev_lock);
+			if (devl_is_registered(devlink))
+				return devlink;
+			devl_dev_unlock(devlink, dev_lock);
+		}
 		devlink_put(devlink);
 	}
 
@@ -90,11 +96,13 @@ devlink_get_from_attrs_lock(struct net *net, struct nlattr **attrs)
 static int __devlink_nl_pre_doit(struct sk_buff *skb, struct genl_info *info,
 				 u8 flags)
 {
+	bool dev_lock = flags & DEVLINK_NL_FLAG_NEED_DEV_LOCK;
 	struct devlink_port *devlink_port;
 	struct devlink *devlink;
 	int err;
 
-	devlink = devlink_get_from_attrs_lock(genl_info_net(info), info->attrs);
+	devlink = devlink_get_from_attrs_lock(genl_info_net(info), info->attrs,
+					      dev_lock);
 	if (IS_ERR(devlink))
 		return PTR_ERR(devlink);
 
@@ -114,7 +122,7 @@ static int __devlink_nl_pre_doit(struct sk_buff *skb, struct genl_info *info,
 	return 0;
 
 unlock:
-	devl_unlock(devlink);
+	devl_dev_unlock(devlink, dev_lock);
 	devlink_put(devlink);
 	return err;
 }
@@ -138,16 +146,23 @@ int devlink_nl_pre_doit_port_optional(const struct genl_split_ops *ops,
 	return __devlink_nl_pre_doit(skb, info, DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT);
 }
 
-void devlink_nl_post_doit(const struct genl_split_ops *ops,
-			  struct sk_buff *skb, struct genl_info *info)
+static void __devlink_nl_post_doit(struct sk_buff *skb, struct genl_info *info,
+				   u8 flags)
 {
+	bool dev_lock = flags & DEVLINK_NL_FLAG_NEED_DEV_LOCK;
 	struct devlink *devlink;
 
 	devlink = info->user_ptr[0];
-	devl_unlock(devlink);
+	devl_dev_unlock(devlink, dev_lock);
 	devlink_put(devlink);
 }
 
+void devlink_nl_post_doit(const struct genl_split_ops *ops,
+			  struct sk_buff *skb, struct genl_info *info)
+{
+	__devlink_nl_post_doit(skb, info, 0);
+}
+
 static int devlink_nl_inst_single_dumpit(struct sk_buff *msg,
 					 struct netlink_callback *cb, int flags,
 					 devlink_nl_dump_one_func_t *dump_one,
@@ -156,7 +171,7 @@ static int devlink_nl_inst_single_dumpit(struct sk_buff *msg,
 	struct devlink *devlink;
 	int err;
 
-	devlink = devlink_get_from_attrs_lock(sock_net(msg->sk), attrs);
+	devlink = devlink_get_from_attrs_lock(sock_net(msg->sk), attrs, false);
 	if (IS_ERR(devlink))
 		return PTR_ERR(devlink);
 	err = dump_one(msg, devlink, cb, flags | NLM_F_DUMP_FILTERED);
diff --git a/net/devlink/netlink_gen.c b/net/devlink/netlink_gen.c
index 788dfdc498..371f27f653 100644
--- a/net/devlink/netlink_gen.c
+++ b/net/devlink/netlink_gen.c
@@ -198,7 +198,7 @@ static const struct nla_policy devlink_eswitch_set_nl_policy[DEVLINK_ATTR_ESWITC
 	[DEVLINK_ATTR_BUS_NAME] = { .type = NLA_NUL_STRING, },
 	[DEVLINK_ATTR_DEV_NAME] = { .type = NLA_NUL_STRING, },
 	[DEVLINK_ATTR_ESWITCH_MODE] = NLA_POLICY_MAX(NLA_U16, 1),
-	[DEVLINK_ATTR_ESWITCH_INLINE_MODE] = NLA_POLICY_MAX(NLA_U16, 3),
+	[DEVLINK_ATTR_ESWITCH_INLINE_MODE] = NLA_POLICY_MAX(NLA_U8, 3),
 	[DEVLINK_ATTR_ESWITCH_ENCAP_MODE] = NLA_POLICY_MAX(NLA_U8, 1),
 };
 
diff --git a/net/devlink/port.c b/net/devlink/port.c
index d39ee6053c..2b3c2b1a3e 100644
--- a/net/devlink/port.c
+++ b/net/devlink/port.c
@@ -887,7 +887,7 @@ int devlink_nl_port_new_doit(struct sk_buff *skb, struct genl_info *info)
 		err = -ENOMEM;
 		goto err_out_port_del;
 	}
-	err = devlink_nl_port_fill(msg, devlink_port, DEVLINK_CMD_NEW,
+	err = devlink_nl_port_fill(msg, devlink_port, DEVLINK_CMD_PORT_NEW,
 				   info->snd_portid, info->snd_seq, 0, NULL);
 	if (WARN_ON_ONCE(err))
 		goto err_out_msg_free;
diff --git a/net/devlink/region.c b/net/devlink/region.c
index 0aab7b82d6..e3bab458db 100644
--- a/net/devlink/region.c
+++ b/net/devlink/region.c
@@ -883,7 +883,8 @@ int devlink_nl_region_read_dumpit(struct sk_buff *skb,
 
 	start_offset = state->start_offset;
 
-	devlink = devlink_get_from_attrs_lock(sock_net(cb->skb->sk), attrs);
+	devlink = devlink_get_from_attrs_lock(sock_net(cb->skb->sk), attrs,
+					      false);
 	if (IS_ERR(devlink))
 		return PTR_ERR(devlink);