Merge tag 'trace-v7.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-tracegrafted

Pull tracing fixes from Steven Rostedt:

 - Don't destroy user event fields when removal fails

   User event fields are destroyed before the event is removed from
   visibility. But that can fail leaving the still visible event with no
   fields. Move the destroying of the fields to after the event is
   successfully removed from visibility.

 - Initialize function graph state is fork before calling
   copy_exec_state()

   For non-CLONE_VM forks, copy_exec_state() allocates a new
   task_exec_state. If that allocation fails, ftrace_graph_exit_task()
   will free the tasks ret_stack pointer. Since that pointer is still
   using the parent's ret_stack, it mistakenly frees the parent's
   pointer too.

   Call ftrace_graph_init() on the task first which will NULL out the
   new tasks's ret_stack and if the copy fails, it will not free
   anything.

 - Remove FGRAPH_MAX_INDEX

   The macro FGRAPH_MAX_INDEX was added but never used. Remove it.

 - Save ent_size in function graph printing of nested functions

   The function graph tracer needs to look at the next event to see if
   the next event is the return of the current function entry. If it is,
   it prints a single line:

	ktime_get();

   Otherwise it prints it like a nested function:

	tick_nohz_irq_exit() {
	    ktime_get();
	    kcpustat_irq_exit();
	}

   In order to look at the next event, it must save the current event so
   that it has the information to print from it. It saves the event in
   the iterator descriptor called "ent". What it doesn't save is the
   ent_size of the event which is now used to know if the function graph
   arguments are to be printed. The peek doesn't save the size so the
   size used happens to be that of the size of the last event that was
   seen.

   Save the entry event size in the iterator descriptor so that the
   correct size is used.

 - Fix several errors with freeing data in the histogram code

   The histogram code had a lot of leaked or or incorrect accounting
   when failures happen. Correct them.

 - Fix histogram regression of .percent and .graph modifiers

   Up until 6.3 histogram values could have "percent" or "graph"
   modifiers that changed how they were printed. But a change that added
   restricting histograms values from being strings, stack traces and
   other modifiers inadvertently prevented them from using the percent
   and graph modifiers, which were legal use cases for values.

   Put back the percent and graph modifiers.

 - Fix various typos in the comments

 - Set the trace_clock before initializing a histogram with clock
   argument

   The histogram API allows the user to specific which trace clock to
   use via a "clock=" string. The histogram is set up first before the
   clock is checked. If the passed in clock is not valid, it exits
   without fully fixing up the histogram leaving it on the list and a
   use-after-free can trigger.

   Update the clock argument first and if it fails then exit gracefully
   before the histogram trigger is placed on any lists.

 - Restore :mod: trailer after parsing in ftrace_set_clr_event

   The function ftrace_set_clr_event() modifies the parse string and
   needs to put it back to what was passed in. It searches for ":mod:"
   via a strsep() but fails to put back the first ':' in the string.

   Add back the ':' in the passed in string.

 - Take trace_array reference when opening a tracer options file

   The options files are dynamically created and some tracers add their
   own options. When a tracer adds their own list of options, the
   trace_array holding them has an array to hold the list of options for
   each tracer. This array increases in size via a krealloc(), and the
   new entry gets a newly allocated array to hold the options of the new
   tracer being added.

   The element in each entry of the tracer's option array holds a
   pointer back to the trace_array, a pointer to the tracer it is
   associated to, a pointer to the flags of the option.

   The issue is that these arrays are freed when the trace_array is
   freed when its instance it represents is removed from the instances
   directory. There's a race that an open of one of these options files
   can happen when the instance is being removed.

   Add a new helper function to be called by the open function of the
   options file to iterate all existing trace_arrays under a lock and
   find the one that has the given option element in one of it's tracer
   arrays. If found, then update the associated trace_array's reference
   counter to keep it from being freed. If not found, have the open call
   return -ENODEV.

 - Disable interrupts when acquiring the lock in rb_wake_up_waiters()

   The function rb_wake_up_waiters() assumes it will be called in
   interrupt context and does not disable irqs when taking
   cpu_buffer->reader_lock, which can be called in hard interrupt
   context. The issue is in PREEMPT_RT, this function is called in
   thread context leaving this lock open to a deadlock.

   Take the lock with interrupts disabled.

 - Use rcu_assign_pointer() for tmp_ops filter hash

   The tmp_ops used in update_ftrace_direct_mod() assigns its
   filter_hash field directly, but that field is annotated as __rcu and
   sparse complains. Assign it with rcu_assign_pointer()

 - Fix use-after-free in enable_trigger_private_data_free()

   The trace_event_call is accessed through the event_trigger_data's
   trace_event_file pointer to put the trace_event_call on freeing. The
   issue is that the trace_event_file data may have been freed already
   causing a use-after-free. Add a field to the event_trigger_data that
   points directly to the trace_event_call so that it can decrement its
   reference directly without needing to go through the
   trace_event_file.

 - Fix accounting of buffer data remote headers

   trace_buffer_desc_size() and trace_remote_alloc_buffer() undercount
   the number of pages is needed for the asked for size as it doesn't
   take into account the meta data on each page. Add a helper function
   to do the calculation properly and use that in these functions.

 - Catch nr_page_va overflow in ring_buffer_desc sizing

   The number of pages per remote ring buffer is capped by
   ring_buffer_desc::nr_page_va (32 bits). A buffer_size large enough to
   overflow that field would silently allocate a descriptor smaller than
   what was asked for.

 - Do not resize the subbuf order if any per_cpu buffer is disabled

   The mmapping of ring buffers disables resizing the subbuffers, but it
   is done per-cpu whereas the subbuf size change is done for all the
   per_cpu buffers under the buffer->mutex. It could change the size of
   some while the mapping is happening on others. Have the resize of the
   subbuf order check all the per_cpu buffers under the lock to see if
   any of them is disabled before starting and causing an inconsistency
   between buffers that are being mapped.

* tag 'trace-v7.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: (25 commits)
  ring-buffer: Check resize_disabled before publishing the new subbuf order
  tracing/remotes: Catch nr_page_va overflow in ring_buffer_desc sizing
  tracing/remotes: Account for ring buffer page header in size calculation
  tracing: Don't dereference trace_event_file in deferred trigger free
  ftrace: Use rcu_assign_pointer() for tmp_ops filter hash
  ring-buffer: Acquire the lock with irqsave in rb_wake_up_waiters()
  tracing: Take trace_array reference when opening a tracer options file
  tracing: Fix ring_buffer_read_page_size() kernel-doc
  tracing: Restore :mod: trailer after parsing in ftrace_set_clr_event()
  tracing: Fix memory corruption from a "STACKTRACE" histogram key
  tracing: Fix memory corruption from the histogram stacktrace modifier
  tracing: Undo the registration when enabling the histogram trigger fails
  tracing: Take the reference before publishing the named histogram trigger
  tracing: Set the trace clock before registering the histogram trigger
  tracing: Fix typo "preceeded" in comment
  tracing: Fix typo "availabe" in comment
  tracing: Let histogram values keep the percent and graph modifiers
  tracing: Keep the entry count when the histogram stats allocation fails
  tracing: Free histogram the field rejected for a bad modifier
  tracing: Free histogram the var ref when its initialization fails
  ...

1 files changed, 453 insertions, 0 deletions

diff --git a/include/net/inet_sock.h b/include/net/inet_sock.h
new file mode 100644
index 000000000..7cdcbed3e
--- /dev/null
+++ b/include/net/inet_sock.h
@@ -0,0 +1,453 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * INET		An implementation of the TCP/IP protocol suite for the LINUX
+ *		operating system.  INET is implemented using the  BSD Socket
+ *		interface as the means of communication with the user level.
+ *
+ *		Definitions for inet_sock
+ *
+ * Authors:	Many, reorganised here by
+ * 		Arnaldo Carvalho de Melo <acme@mandriva.com>
+ */
+#ifndef _INET_SOCK_H
+#define _INET_SOCK_H
+
+#include <linux/bitops.h>
+#include <linux/string.h>
+#include <linux/types.h>
+#include <linux/jhash.h>
+#include <linux/netdevice.h>
+
+#include <net/flow.h>
+#include <net/inet_dscp.h>
+#include <net/sock.h>
+#include <net/request_sock.h>
+#include <net/netns/hash.h>
+#include <net/tcp_states.h>
+#include <net/l3mdev.h>
+
+#define IP_OPTIONS_DATA_FIXED_SIZE 40
+
+/** struct ip_options - IP Options
+ *
+ * @faddr - Saved first hop address
+ * @nexthop - Saved nexthop address in LSRR and SSRR
+ * @is_strictroute - Strict source route
+ * @srr_is_hit - Packet destination addr was our one
+ * @is_changed - IP checksum more not valid
+ * @rr_needaddr - Need to record addr of outgoing dev
+ * @ts_needtime - Need to record timestamp
+ * @ts_needaddr - Need to record addr of outgoing dev
+ */
+struct ip_options {
+	__be32		faddr;
+	__be32		nexthop;
+	unsigned char	optlen;
+	unsigned char	srr;
+	unsigned char	rr;
+	unsigned char	ts;
+	unsigned char	is_strictroute:1,
+			srr_is_hit:1,
+			is_changed:1,
+			rr_needaddr:1,
+			ts_needtime:1,
+			ts_needaddr:1;
+	unsigned char	router_alert;
+	unsigned char	cipso;
+	unsigned char	__pad2;
+	unsigned char	__data[];
+};
+
+struct ip_options_rcu {
+	struct rcu_head rcu;
+
+	/* Must be last as it ends in a flexible-array member. */
+	struct ip_options opt;
+};
+
+struct inet_request_sock {
+	struct request_sock	req;
+#define ir_loc_addr		req.__req_common.skc_rcv_saddr
+#define ir_rmt_addr		req.__req_common.skc_daddr
+#define ir_num			req.__req_common.skc_num
+#define ir_rmt_port		req.__req_common.skc_dport
+#define ir_v6_rmt_addr		req.__req_common.skc_v6_daddr
+#define ir_v6_loc_addr		req.__req_common.skc_v6_rcv_saddr
+#define ir_iif			req.__req_common.skc_bound_dev_if
+#define ir_cookie		req.__req_common.skc_cookie
+#define ireq_net		req.__req_common.skc_net
+#define ireq_state		req.__req_common.skc_state
+#define ireq_family		req.__req_common.skc_family
+
+	u16			snd_wscale : 4,
+				rcv_wscale : 4,
+				tstamp_ok  : 1,
+				sack_ok	   : 1,
+				wscale_ok  : 1,
+				ecn_ok	   : 1,
+				acked	   : 1,
+				no_srccheck: 1,
+				smc_ok	   : 1;
+	u32                     ir_mark;
+	union {
+		struct ip_options_rcu __rcu	*ireq_opt;
+#if IS_ENABLED(CONFIG_IPV6)
+		struct {
+			struct ipv6_txoptions	*ipv6_opt;
+			struct sk_buff		*pktopts;
+		};
+#endif
+	};
+};
+
+#define inet_rsk(ptr) container_of_const(ptr, struct inet_request_sock, req)
+
+static inline u32 inet_request_mark(const struct sock *sk, struct sk_buff *skb)
+{
+	u32 mark = READ_ONCE(sk->sk_mark);
+
+	if (!mark && READ_ONCE(sock_net(sk)->ipv4.sysctl_tcp_fwmark_accept))
+		return skb->mark;
+
+	return mark;
+}
+
+static inline int inet_request_bound_dev_if(const struct sock *sk,
+					    struct sk_buff *skb)
+{
+	int bound_dev_if = READ_ONCE(sk->sk_bound_dev_if);
+#ifdef CONFIG_NET_L3_MASTER_DEV
+	struct net *net = sock_net(sk);
+
+	if (!bound_dev_if && READ_ONCE(net->ipv4.sysctl_tcp_l3mdev_accept))
+		return l3mdev_master_ifindex_by_index(net, skb->skb_iif);
+#endif
+
+	return bound_dev_if;
+}
+
+static inline int inet_sk_bound_l3mdev(const struct sock *sk)
+{
+#ifdef CONFIG_NET_L3_MASTER_DEV
+	struct net *net = sock_net(sk);
+
+	if (!READ_ONCE(net->ipv4.sysctl_tcp_l3mdev_accept))
+		return l3mdev_master_ifindex_by_index(net,
+						      sk->sk_bound_dev_if);
+#endif
+
+	return 0;
+}
+
+static inline bool inet_bound_dev_eq(bool l3mdev_accept, int bound_dev_if,
+				     int dif, int sdif)
+{
+	if (!bound_dev_if)
+		return !sdif || l3mdev_accept;
+	return bound_dev_if == dif || bound_dev_if == sdif;
+}
+
+static inline bool inet_sk_bound_dev_eq(const struct net *net,
+					int bound_dev_if,
+					int dif, int sdif)
+{
+#if IS_ENABLED(CONFIG_NET_L3_MASTER_DEV)
+	return inet_bound_dev_eq(!!READ_ONCE(net->ipv4.sysctl_tcp_l3mdev_accept),
+				 bound_dev_if, dif, sdif);
+#else
+	return inet_bound_dev_eq(true, bound_dev_if, dif, sdif);
+#endif
+}
+
+struct inet6_cork {
+	struct ipv6_txoptions *opt;
+	u8 hop_limit;
+	u8 tclass;
+	u8 dontfrag:1;
+};
+
+struct inet_cork {
+	unsigned int		flags;
+	__be32			addr;
+	struct ip_options	*opt;
+	unsigned int		fragsize;
+	int			length; /* Total length of all frames */
+	struct dst_entry	*dst;
+	u8			tx_flags;
+	__u8			ttl;
+	__s16			tos;
+	u32			priority;
+	__u16			gso_size;
+	u32			ts_opt_id;
+	u64			transmit_time;
+	u32			mark;
+};
+
+struct inet_cork_full {
+	struct inet_cork	base;
+	struct flowi		fl;
+#if IS_ENABLED(CONFIG_IPV6)
+	struct inet6_cork	base6;
+#endif
+};
+
+struct ip_mc_socklist;
+struct ipv6_pinfo;
+struct rtable;
+
+/** struct inet_sock - representation of INET sockets
+ *
+ * @sk - ancestor class
+ * @pinet6 - pointer to IPv6 control block
+ * @inet_daddr - Foreign IPv4 addr
+ * @inet_rcv_saddr - Bound local IPv4 addr
+ * @inet_dport - Destination port
+ * @inet_num - Local port
+ * @inet_flags - various atomic flags
+ * @inet_saddr - Sending source
+ * @uc_ttl - Unicast TTL
+ * @inet_sport - Source port
+ * @inet_id - ID counter for DF pkts
+ * @tos - TOS
+ * @mc_ttl - Multicasting TTL
+ * @uc_index - Unicast outgoing device index
+ * @mc_index - Multicast device index
+ * @mc_list - Group array
+ * @cork - info to build ip hdr on each ip frag while socket is corked
+ */
+struct inet_sock {
+	/* sk and pinet6 has to be the first two members of inet_sock */
+	struct sock		sk;
+#if IS_ENABLED(CONFIG_IPV6)
+	struct ipv6_pinfo	*pinet6;
+	struct ipv6_fl_socklist __rcu *ipv6_fl_list;
+#endif
+	/* Socket demultiplex comparisons on incoming packets. */
+#define inet_daddr		sk.__sk_common.skc_daddr
+#define inet_rcv_saddr		sk.__sk_common.skc_rcv_saddr
+#define inet_dport		sk.__sk_common.skc_dport
+#define inet_num		sk.__sk_common.skc_num
+
+	unsigned long		inet_flags;
+	__be32			inet_saddr;
+	__s16			uc_ttl;
+	__be16			inet_sport;
+	struct ip_options_rcu __rcu	*inet_opt;
+	atomic_t		inet_id;
+
+	__u8			tos;
+	__u8			min_ttl;
+	__u8			mc_ttl;
+	__u8			pmtudisc;
+	__u8			rcv_tos;
+	__u8			convert_csum;
+	int			uc_index;
+	int			mc_index;
+	__be32			mc_addr;
+	u32			local_port_range;	/* high << 16 | low */
+
+	struct ip_mc_socklist __rcu	*mc_list;
+	struct inet_cork_full	cork;
+};
+
+#define IPCORK_OPT		1	/* ip-options has been held in ipcork.opt */
+#define IPCORK_TS_OPT_ID	2	/* ts_opt_id field is valid, overriding sk_tskey */
+
+enum {
+	INET_FLAGS_PKTINFO	= 0,
+	INET_FLAGS_TTL		= 1,
+	INET_FLAGS_TOS		= 2,
+	INET_FLAGS_RECVOPTS	= 3,
+	INET_FLAGS_RETOPTS	= 4,
+	INET_FLAGS_PASSSEC	= 5,
+	INET_FLAGS_ORIGDSTADDR	= 6,
+	INET_FLAGS_CHECKSUM	= 7,
+	INET_FLAGS_RECVFRAGSIZE	= 8,
+
+	INET_FLAGS_RECVERR	= 9,
+	INET_FLAGS_RECVERR_RFC4884 = 10,
+	INET_FLAGS_FREEBIND	= 11,
+	INET_FLAGS_HDRINCL	= 12,
+	INET_FLAGS_MC_LOOP	= 13,
+	INET_FLAGS_MC_ALL	= 14,
+	INET_FLAGS_TRANSPARENT	= 15,
+	INET_FLAGS_IS_ICSK	= 16,
+	INET_FLAGS_NODEFRAG	= 17,
+	INET_FLAGS_BIND_ADDRESS_NO_PORT = 18,
+	INET_FLAGS_DEFER_CONNECT = 19,
+	INET_FLAGS_MC6_LOOP	= 20,
+	INET_FLAGS_RECVERR6_RFC4884 = 21,
+	INET_FLAGS_MC6_ALL	= 22,
+	INET_FLAGS_AUTOFLOWLABEL_SET = 23,
+	INET_FLAGS_AUTOFLOWLABEL = 24,
+	INET_FLAGS_DONTFRAG	= 25,
+	INET_FLAGS_RECVERR6	= 26,
+	INET_FLAGS_REPFLOW	= 27,
+	INET_FLAGS_RTALERT_ISOLATE = 28,
+	INET_FLAGS_SNDFLOW	= 29,
+	INET_FLAGS_RTALERT	= 30,
+};
+
+/* cmsg flags for inet */
+#define IP_CMSG_PKTINFO		BIT(INET_FLAGS_PKTINFO)
+#define IP_CMSG_TTL		BIT(INET_FLAGS_TTL)
+#define IP_CMSG_TOS		BIT(INET_FLAGS_TOS)
+#define IP_CMSG_RECVOPTS	BIT(INET_FLAGS_RECVOPTS)
+#define IP_CMSG_RETOPTS		BIT(INET_FLAGS_RETOPTS)
+#define IP_CMSG_PASSSEC		BIT(INET_FLAGS_PASSSEC)
+#define IP_CMSG_ORIGDSTADDR	BIT(INET_FLAGS_ORIGDSTADDR)
+#define IP_CMSG_CHECKSUM	BIT(INET_FLAGS_CHECKSUM)
+#define IP_CMSG_RECVFRAGSIZE	BIT(INET_FLAGS_RECVFRAGSIZE)
+
+#define IP_CMSG_ALL	(IP_CMSG_PKTINFO | IP_CMSG_TTL |		\
+			 IP_CMSG_TOS | IP_CMSG_RECVOPTS |		\
+			 IP_CMSG_RETOPTS | IP_CMSG_PASSSEC |		\
+			 IP_CMSG_ORIGDSTADDR | IP_CMSG_CHECKSUM |	\
+			 IP_CMSG_RECVFRAGSIZE)
+
+static inline unsigned long inet_cmsg_flags(const struct inet_sock *inet)
+{
+	return READ_ONCE(inet->inet_flags) & IP_CMSG_ALL;
+}
+
+static inline dscp_t inet_sk_dscp(const struct inet_sock *inet)
+{
+	return inet_dsfield_to_dscp(READ_ONCE(inet->tos));
+}
+
+#define inet_test_bit(nr, sk)			\
+	test_bit(INET_FLAGS_##nr, &inet_sk(sk)->inet_flags)
+#define inet_set_bit(nr, sk)			\
+	set_bit(INET_FLAGS_##nr, &inet_sk(sk)->inet_flags)
+#define inet_clear_bit(nr, sk)			\
+	clear_bit(INET_FLAGS_##nr, &inet_sk(sk)->inet_flags)
+#define inet_assign_bit(nr, sk, val)		\
+	assign_bit(INET_FLAGS_##nr, &inet_sk(sk)->inet_flags, val)
+
+/**
+ * sk_to_full_sk - Access to a full socket
+ * @sk: pointer to a socket
+ *
+ * SYNACK messages might be attached to request sockets.
+ * Some places want to reach the listener in this case.
+ */
+static inline struct sock *sk_to_full_sk(struct sock *sk)
+{
+#ifdef CONFIG_INET
+	if (sk && READ_ONCE(sk->sk_state) == TCP_NEW_SYN_RECV)
+		sk = inet_reqsk(sk)->rsk_listener;
+	if (sk && READ_ONCE(sk->sk_state) == TCP_TIME_WAIT)
+		sk = NULL;
+#endif
+	return sk;
+}
+
+/* sk_to_full_sk() variant with a const argument */
+static inline const struct sock *sk_const_to_full_sk(const struct sock *sk)
+{
+#ifdef CONFIG_INET
+	if (sk && READ_ONCE(sk->sk_state) == TCP_NEW_SYN_RECV)
+		sk = ((const struct request_sock *)sk)->rsk_listener;
+	if (sk && READ_ONCE(sk->sk_state) == TCP_TIME_WAIT)
+		sk = NULL;
+#endif
+	return sk;
+}
+
+static inline struct sock *skb_to_full_sk(const struct sk_buff *skb)
+{
+	return sk_to_full_sk(skb->sk);
+}
+
+#define inet_sk(ptr) container_of_const(ptr, struct inet_sock, sk)
+
+int inet_sk_rebuild_header(struct sock *sk);
+
+/**
+ * inet_sk_state_load - read sk->sk_state for lockless contexts
+ * @sk: socket pointer
+ *
+ * Paired with inet_sk_state_store(). Used in places we don't hold socket lock:
+ * tcp_diag_get_info(), tcp_get_info(), tcp_poll(), get_tcp4_sock() ...
+ */
+static inline int inet_sk_state_load(const struct sock *sk)
+{
+	/* state change might impact lockless readers. */
+	return smp_load_acquire(&sk->sk_state);
+}
+
+/**
+ * inet_sk_state_store - update sk->sk_state
+ * @sk: socket pointer
+ * @newstate: new state
+ *
+ * Paired with inet_sk_state_load(). Should be used in contexts where
+ * state change might impact lockless readers.
+ */
+void inet_sk_state_store(struct sock *sk, int newstate);
+
+void inet_sk_set_state(struct sock *sk, int state);
+
+static inline unsigned int __inet_ehashfn(const __be32 laddr,
+					  const __u16 lport,
+					  const __be32 faddr,
+					  const __be16 fport,
+					  u32 initval)
+{
+	return jhash_3words((__force __u32) laddr,
+			    (__force __u32) faddr,
+			    ((__u32) lport) << 16 | (__force __u32)fport,
+			    initval);
+}
+
+struct request_sock *inet_reqsk_alloc(const struct request_sock_ops *ops,
+				      struct sock *sk_listener,
+				      bool attach_listener);
+
+static inline __u8 inet_sk_flowi_flags(const struct sock *sk)
+{
+	__u8 flags = 0;
+
+	if (inet_test_bit(TRANSPARENT, sk) || inet_test_bit(HDRINCL, sk))
+		flags |= FLOWI_FLAG_ANYSRC;
+	return flags;
+}
+
+static inline void inet_inc_convert_csum(struct sock *sk)
+{
+	inet_sk(sk)->convert_csum++;
+}
+
+static inline void inet_dec_convert_csum(struct sock *sk)
+{
+	if (inet_sk(sk)->convert_csum > 0)
+		inet_sk(sk)->convert_csum--;
+}
+
+static inline bool inet_get_convert_csum(struct sock *sk)
+{
+	return !!inet_sk(sk)->convert_csum;
+}
+
+
+static inline bool inet_can_nonlocal_bind(struct net *net,
+					  struct inet_sock *inet)
+{
+	return READ_ONCE(net->ipv4.sysctl_ip_nonlocal_bind) ||
+		test_bit(INET_FLAGS_FREEBIND, &inet->inet_flags) ||
+		test_bit(INET_FLAGS_TRANSPARENT, &inet->inet_flags);
+}
+
+static inline bool inet_addr_valid_or_nonlocal(struct net *net,
+					       struct inet_sock *inet,
+					       __be32 addr,
+					       int addr_type)
+{
+	return inet_can_nonlocal_bind(net, inet) ||
+		addr == htonl(INADDR_ANY) ||
+		addr_type == RTN_LOCAL ||
+		addr_type == RTN_MULTICAST ||
+		addr_type == RTN_BROADCAST;
+}
+
+#endif	/* _INET_SOCK_H */