cregit-Linux how code gets into the kernel

Release 4.12 include/net/sock.h

Directory: include/net
/*
 * 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 the AF_INET socket handler.
 *
 * Version:     @(#)sock.h      1.0.4   05/13/93
 *
 * Authors:     Ross Biro
 *              Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
 *              Corey Minyard <wf-rch!minyard@relay.EU.net>
 *              Florian La Roche <flla@stud.uni-sb.de>
 *
 * Fixes:
 *              Alan Cox        :       Volatiles in skbuff pointers. See
 *                                      skbuff comments. May be overdone,
 *                                      better to prove they can be removed
 *                                      than the reverse.
 *              Alan Cox        :       Added a zapped field for tcp to note
 *                                      a socket is reset and must stay shut up
 *              Alan Cox        :       New fields for options
 *      Pauline Middelink       :       identd support
 *              Alan Cox        :       Eliminate low level recv/recvfrom
 *              David S. Miller :       New socket lookup architecture.
 *              Steve Whitehouse:       Default routines for sock_ops
 *              Arnaldo C. Melo :       removed net_pinfo, tp_pinfo and made
 *                                      protinfo be just a void pointer, as the
 *                                      protocol specific parts were moved to
 *                                      respective headers and ipv4/v6, etc now
 *                                      use private slabcaches for its socks
 *              Pedro Hortas    :       New flags field for socket options
 *
 *
 *              This program is free software; you can redistribute it and/or
 *              modify it under the terms of the GNU General Public License
 *              as published by the Free Software Foundation; either version
 *              2 of the License, or (at your option) any later version.
 */
#ifndef _SOCK_H

#define _SOCK_H

#include <linux/hardirq.h>
#include <linux/kernel.h>
#include <linux/list.h>
#include <linux/list_nulls.h>
#include <linux/timer.h>
#include <linux/cache.h>
#include <linux/bitops.h>
#include <linux/lockdep.h>
#include <linux/netdevice.h>
#include <linux/skbuff.h>	/* struct sk_buff */
#include <linux/mm.h>
#include <linux/security.h>
#include <linux/slab.h>
#include <linux/uaccess.h>
#include <linux/page_counter.h>
#include <linux/memcontrol.h>
#include <linux/static_key.h>
#include <linux/sched.h>
#include <linux/wait.h>
#include <linux/cgroup-defs.h>

#include <linux/filter.h>
#include <linux/rculist_nulls.h>
#include <linux/poll.h>

#include <linux/atomic.h>
#include <net/dst.h>
#include <net/checksum.h>
#include <net/tcp_states.h>
#include <linux/net_tstamp.h>
#include <net/smc.h>

/*
 * This structure really needs to be cleaned up.
 * Most of it is for TCP, and not used by any of
 * the other protocols.
 */

/* Define this to get the SOCK_DBG debugging facility. */

#define SOCK_DEBUGGING
#ifdef SOCK_DEBUGGING

#define SOCK_DEBUG(sk, msg...) do { if ((sk) && sock_flag((sk), SOCK_DBG)) \
                                        printk(KERN_DEBUG msg); } while (0)
#else
/* Validate arguments and do nothing */
static inline __printf(2, 3)

void SOCK_DEBUG(const struct sock *sk, const char *msg, ...)
{
}
#endif

/* This is the per-socket lock.  The spinlock provides a synchronization
 * between user contexts and software interrupt processing, whereas the
 * mini-semaphore synchronizes multiple users amongst themselves.
 */
typedef struct {
	
spinlock_t		slock;
	
int			owned;
	
wait_queue_head_t	wq;
	/*
         * We express the mutex-alike socket_lock semantics
         * to the lock validator by explicitly managing
         * the slock as a lock variant (in addition to
         * the slock itself):
         */
#ifdef CONFIG_DEBUG_LOCK_ALLOC
	
struct lockdep_map dep_map;
#endif

} socket_lock_t;

struct sock;
struct proto;
struct net;


typedef __u32 __bitwise __portpair;

typedef __u64 __bitwise __addrpair;

/**
 *      struct sock_common - minimal network layer representation of sockets
 *      @skc_daddr: Foreign IPv4 addr
 *      @skc_rcv_saddr: Bound local IPv4 addr
 *      @skc_hash: hash value used with various protocol lookup tables
 *      @skc_u16hashes: two u16 hash values used by UDP lookup tables
 *      @skc_dport: placeholder for inet_dport/tw_dport
 *      @skc_num: placeholder for inet_num/tw_num
 *      @skc_family: network address family
 *      @skc_state: Connection state
 *      @skc_reuse: %SO_REUSEADDR setting
 *      @skc_reuseport: %SO_REUSEPORT setting
 *      @skc_bound_dev_if: bound device index if != 0
 *      @skc_bind_node: bind hash linkage for various protocol lookup tables
 *      @skc_portaddr_node: second hash linkage for UDP/UDP-Lite protocol
 *      @skc_prot: protocol handlers inside a network family
 *      @skc_net: reference to the network namespace of this socket
 *      @skc_node: main hash linkage for various protocol lookup tables
 *      @skc_nulls_node: main hash linkage for TCP/UDP/UDP-Lite protocol
 *      @skc_tx_queue_mapping: tx queue number for this connection
 *      @skc_flags: place holder for sk_flags
 *              %SO_LINGER (l_onoff), %SO_BROADCAST, %SO_KEEPALIVE,
 *              %SO_OOBINLINE settings, %SO_TIMESTAMPING settings
 *      @skc_incoming_cpu: record/match cpu processing incoming packets
 *      @skc_refcnt: reference count
 *
 *      This is the minimal network layer representation of sockets, the header
 *      for struct sock and struct inet_timewait_sock.
 */

struct sock_common {
	/* skc_daddr and skc_rcv_saddr must be grouped on a 8 bytes aligned
         * address on 64bit arches : cf INET_MATCH()
         */
	union {
		
__addrpair	skc_addrpair;
		struct {
			
__be32	skc_daddr;
			
__be32	skc_rcv_saddr;
		};
	};
	union  {
		
unsigned int	skc_hash;
		
__u16		skc_u16hashes[2];
	};
	/* skc_dport && skc_num must be grouped as well */
	union {
		
__portpair	skc_portpair;
		struct {
			
__be16	skc_dport;
			
__u16	skc_num;
		};
	};

	
unsigned short		skc_family;
	
volatile unsigned char	skc_state;
	
unsigned char		skc_reuse:4;
	
unsigned char		skc_reuseport:1;
	
unsigned char		skc_ipv6only:1;
	
unsigned char		skc_net_refcnt:1;
	
int			skc_bound_dev_if;
	union {
		
struct hlist_node	skc_bind_node;
		
struct hlist_node	skc_portaddr_node;
	};
	
struct proto		*skc_prot;
	
possible_net_t		skc_net;

#if IS_ENABLED(CONFIG_IPV6)
	
struct in6_addr		skc_v6_daddr;
	
struct in6_addr		skc_v6_rcv_saddr;
#endif

	
atomic64_t		skc_cookie;

	/* following fields are padding to force
         * offset(struct sock, sk_refcnt) == 128 on 64bit arches
         * assuming IPV6 is enabled. We use this padding differently
         * for different kind of 'sockets'
         */
	union {
		
unsigned long	skc_flags;
		
struct sock	*skc_listener; /* request_sock */
		
struct inet_timewait_death_row *skc_tw_dr; /* inet_timewait_sock */
	};
	/*
         * fields between dontcopy_begin/dontcopy_end
         * are not copied in sock_copy()
         */
	/* private: */
	
int			skc_dontcopy_begin[0];
	/* public: */
	union {
		
struct hlist_node	skc_node;
		
struct hlist_nulls_node skc_nulls_node;
	};
	
int			skc_tx_queue_mapping;
	union {
		
int		skc_incoming_cpu;
		
u32		skc_rcv_wnd;
		
u32		skc_tw_rcv_nxt; /* struct tcp_timewait_sock  */
	};

	
atomic_t		skc_refcnt;
	/* private: */
	
int                     skc_dontcopy_end[0];
	union {
		
u32		skc_rxhash;
		
u32		skc_window_clamp;
		
u32		skc_tw_snd_nxt; /* struct tcp_timewait_sock */
	};
	/* public: */
};

/**
  *     struct sock - network layer representation of sockets
  *     @__sk_common: shared layout with inet_timewait_sock
  *     @sk_shutdown: mask of %SEND_SHUTDOWN and/or %RCV_SHUTDOWN
  *     @sk_userlocks: %SO_SNDBUF and %SO_RCVBUF settings
  *     @sk_lock:       synchronizer
  *     @sk_kern_sock: True if sock is using kernel lock classes
  *     @sk_rcvbuf: size of receive buffer in bytes
  *     @sk_wq: sock wait queue and async head
  *     @sk_rx_dst: receive input route used by early demux
  *     @sk_dst_cache: destination cache
  *     @sk_dst_pending_confirm: need to confirm neighbour
  *     @sk_policy: flow policy
  *     @sk_receive_queue: incoming packets
  *     @sk_wmem_alloc: transmit queue bytes committed
  *     @sk_write_queue: Packet sending queue
  *     @sk_omem_alloc: "o" is "option" or "other"
  *     @sk_wmem_queued: persistent queue size
  *     @sk_forward_alloc: space allocated forward
  *     @sk_napi_id: id of the last napi context to receive data for sk
  *     @sk_ll_usec: usecs to busypoll when there is no data
  *     @sk_allocation: allocation mode
  *     @sk_pacing_rate: Pacing rate (if supported by transport/packet scheduler)
  *     @sk_max_pacing_rate: Maximum pacing rate (%SO_MAX_PACING_RATE)
  *     @sk_sndbuf: size of send buffer in bytes
  *     @sk_padding: unused element for alignment
  *     @sk_no_check_tx: %SO_NO_CHECK setting, set checksum in TX packets
  *     @sk_no_check_rx: allow zero checksum in RX packets
  *     @sk_route_caps: route capabilities (e.g. %NETIF_F_TSO)
  *     @sk_route_nocaps: forbidden route capabilities (e.g NETIF_F_GSO_MASK)
  *     @sk_gso_type: GSO type (e.g. %SKB_GSO_TCPV4)
  *     @sk_gso_max_size: Maximum GSO segment size to build
  *     @sk_gso_max_segs: Maximum number of GSO segments
  *     @sk_lingertime: %SO_LINGER l_linger setting
  *     @sk_backlog: always used with the per-socket spinlock held
  *     @sk_callback_lock: used with the callbacks in the end of this struct
  *     @sk_error_queue: rarely used
  *     @sk_prot_creator: sk_prot of original sock creator (see ipv6_setsockopt,
  *                       IPV6_ADDRFORM for instance)
  *     @sk_err: last error
  *     @sk_err_soft: errors that don't cause failure but are the cause of a
  *                   persistent failure not just 'timed out'
  *     @sk_drops: raw/udp drops counter
  *     @sk_ack_backlog: current listen backlog
  *     @sk_max_ack_backlog: listen backlog set in listen()
  *     @sk_priority: %SO_PRIORITY setting
  *     @sk_type: socket type (%SOCK_STREAM, etc)
  *     @sk_protocol: which protocol this socket belongs in this network family
  *     @sk_peer_pid: &struct pid for this socket's peer
  *     @sk_peer_cred: %SO_PEERCRED setting
  *     @sk_rcvlowat: %SO_RCVLOWAT setting
  *     @sk_rcvtimeo: %SO_RCVTIMEO setting
  *     @sk_sndtimeo: %SO_SNDTIMEO setting
  *     @sk_txhash: computed flow hash for use on transmit
  *     @sk_filter: socket filtering instructions
  *     @sk_timer: sock cleanup timer
  *     @sk_stamp: time stamp of last packet received
  *     @sk_tsflags: SO_TIMESTAMPING socket options
  *     @sk_tskey: counter to disambiguate concurrent tstamp requests
  *     @sk_socket: Identd and reporting IO signals
  *     @sk_user_data: RPC layer private data
  *     @sk_frag: cached page frag
  *     @sk_peek_off: current peek_offset value
  *     @sk_send_head: front of stuff to transmit
  *     @sk_security: used by security modules
  *     @sk_mark: generic packet mark
  *     @sk_cgrp_data: cgroup data for this cgroup
  *     @sk_memcg: this socket's memory cgroup association
  *     @sk_write_pending: a write to stream socket waits to start
  *     @sk_state_change: callback to indicate change in the state of the sock
  *     @sk_data_ready: callback to indicate there is data to be processed
  *     @sk_write_space: callback to indicate there is bf sending space available
  *     @sk_error_report: callback to indicate errors (e.g. %MSG_ERRQUEUE)
  *     @sk_backlog_rcv: callback to process the backlog
  *     @sk_destruct: called at sock freeing time, i.e. when all refcnt == 0
  *     @sk_reuseport_cb: reuseport group container
  *     @sk_rcu: used during RCU grace period
  */

struct sock {
	/*
         * Now struct inet_timewait_sock also uses sock_common, so please just
         * don't add nothing before this first member (__sk_common) --acme
         */
	
struct sock_common	__sk_common;

#define sk_node			__sk_common.skc_node

#define sk_nulls_node		__sk_common.skc_nulls_node

#define sk_refcnt		__sk_common.skc_refcnt

#define sk_tx_queue_mapping	__sk_common.skc_tx_queue_mapping


#define sk_dontcopy_begin	__sk_common.skc_dontcopy_begin

#define sk_dontcopy_end		__sk_common.skc_dontcopy_end

#define sk_hash			__sk_common.skc_hash

#define sk_portpair		__sk_common.skc_portpair

#define sk_num			__sk_common.skc_num

#define sk_dport		__sk_common.skc_dport

#define sk_addrpair		__sk_common.skc_addrpair

#define sk_daddr		__sk_common.skc_daddr

#define sk_rcv_saddr		__sk_common.skc_rcv_saddr

#define sk_family		__sk_common.skc_family

#define sk_state		__sk_common.skc_state

#define sk_reuse		__sk_common.skc_reuse

#define sk_reuseport		__sk_common.skc_reuseport

#define sk_ipv6only		__sk_common.skc_ipv6only

#define sk_net_refcnt		__sk_common.skc_net_refcnt

#define sk_bound_dev_if		__sk_common.skc_bound_dev_if

#define sk_bind_node		__sk_common.skc_bind_node

#define sk_prot			__sk_common.skc_prot

#define sk_net			__sk_common.skc_net

#define sk_v6_daddr		__sk_common.skc_v6_daddr

#define sk_v6_rcv_saddr	__sk_common.skc_v6_rcv_saddr

#define sk_cookie		__sk_common.skc_cookie

#define sk_incoming_cpu		__sk_common.skc_incoming_cpu

#define sk_flags		__sk_common.skc_flags

#define sk_rxhash		__sk_common.skc_rxhash

	
socket_lock_t		sk_lock;
	
atomic_t		sk_drops;
	
int			sk_rcvlowat;
	
struct sk_buff_head	sk_error_queue;
	
struct sk_buff_head	sk_receive_queue;
	/*
         * The backlog queue is special, it is always used with
         * the per-socket spinlock held and requires low latency
         * access. Therefore we special case it's implementation.
         * Note : rmem_alloc is in this structure to fill a hole
         * on 64bit arches, not because its logically part of
         * backlog.
         */
	struct {
		
atomic_t	rmem_alloc;
		
int		len;
		
struct sk_buff	*head;
		
struct sk_buff	*tail;
	
} sk_backlog;

#define sk_rmem_alloc sk_backlog.rmem_alloc

	
int			sk_forward_alloc;
#ifdef CONFIG_NET_RX_BUSY_POLL
	
unsigned int		sk_ll_usec;
	/* ===== mostly read cache line ===== */
	
unsigned int		sk_napi_id;
#endif
	
int			sk_rcvbuf;

	
struct sk_filter __rcu	*sk_filter;
	union {
		
struct socket_wq __rcu	*sk_wq;
		
struct socket_wq	*sk_wq_raw;
	};
#ifdef CONFIG_XFRM
	
struct xfrm_policy __rcu *sk_policy[2];
#endif
	
struct dst_entry	*sk_rx_dst;
	
struct dst_entry __rcu	*sk_dst_cache;
	
atomic_t		sk_omem_alloc;
	
int			sk_sndbuf;

	/* ===== cache line for TX ===== */
	
int			sk_wmem_queued;
	
atomic_t		sk_wmem_alloc;
	
unsigned long		sk_tsq_flags;
	
struct sk_buff		*sk_send_head;
	
struct sk_buff_head	sk_write_queue;
	
__s32			sk_peek_off;
	
int			sk_write_pending;
	
__u32			sk_dst_pending_confirm;
	/* Note: 32bit hole on 64bit arches */
	
long			sk_sndtimeo;
	
struct timer_list	sk_timer;
	
__u32			sk_priority;
	
__u32			sk_mark;
	
u32			sk_pacing_rate; /* bytes per second */
	
u32			sk_max_pacing_rate;
	
struct page_frag	sk_frag;
	
netdev_features_t	sk_route_caps;
	
netdev_features_t	sk_route_nocaps;
	
int			sk_gso_type;
	
unsigned int		sk_gso_max_size;
	
gfp_t			sk_allocation;
	
__u32			sk_txhash;

	/*
         * Because of non atomicity rules, all
         * changes are protected by socket lock.
         */
	
unsigned int		__sk_flags_offset[0];
#ifdef __BIG_ENDIAN_BITFIELD

#define SK_FL_PROTO_SHIFT  16

#define SK_FL_PROTO_MASK   0x00ff0000


#define SK_FL_TYPE_SHIFT   0

#define SK_FL_TYPE_MASK    0x0000ffff
#else

#define SK_FL_PROTO_SHIFT  8

#define SK_FL_PROTO_MASK   0x0000ff00


#define SK_FL_TYPE_SHIFT   16

#define SK_FL_TYPE_MASK    0xffff0000
#endif

	kmemcheck_bitfield_begin(flags);
	
unsigned int		sk_padding : 1,
				
sk_kern_sock : 1,
				
sk_no_check_tx : 1,
				
sk_no_check_rx : 1,
				
sk_userlocks : 4,
				
sk_protocol  : 8,
				
sk_type      : 16;

#define SK_PROTOCOL_MAX U8_MAX
	kmemcheck_bitfield_end(flags);

	
u16			sk_gso_max_segs;
	
unsigned long	        sk_lingertime;
	
struct proto		*sk_prot_creator;
	
rwlock_t		sk_callback_lock;
	
int			sk_err,
				
sk_err_soft;
	
u32			sk_ack_backlog;
	
u32			sk_max_ack_backlog;
	
kuid_t			sk_uid;
	
struct pid		*sk_peer_pid;
	
const struct cred	*sk_peer_cred;
	
long			sk_rcvtimeo;
	
ktime_t			sk_stamp;
	
u16			sk_tsflags;
	
u8			sk_shutdown;
	
u32			sk_tskey;
	
struct socket		*sk_socket;
	
void			*sk_user_data;
#ifdef CONFIG_SECURITY
	
void			*sk_security;
#endif
	
struct sock_cgroup_data	sk_cgrp_data;
	
struct mem_cgroup	*sk_memcg;
	
void			(*sk_state_change)(struct sock *sk);
	
void			(*sk_data_ready)(struct sock *sk);
	
void			(*sk_write_space)(struct sock *sk);
	
void			(*sk_error_report)(struct sock *sk);
	
int			(*sk_backlog_rcv)(struct sock *sk,
						  struct sk_buff *skb);
	
void                    (*sk_destruct)(struct sock *sk);
	
struct sock_reuseport __rcu	*sk_reuseport_cb;
	
struct rcu_head		sk_rcu;
};


#define __sk_user_data(sk) ((*((void __rcu **)&(sk)->sk_user_data)))


#define rcu_dereference_sk_user_data(sk)	rcu_dereference(__sk_user_data((sk)))

#define rcu_assign_sk_user_data(sk, ptr)	rcu_assign_pointer(__sk_user_data((sk)), ptr)

/*
 * SK_CAN_REUSE and SK_NO_REUSE on a socket mean that the socket is OK
 * or not whether his port will be reused by someone else. SK_FORCE_REUSE
 * on a socket means that the socket will reuse everybody else's port
 * without looking at the other's sk_reuse value.
 */


#define SK_NO_REUSE	0

#define SK_CAN_REUSE	1

#define SK_FORCE_REUSE	2

int sk_set_peek_off(struct sock *sk, int val);


static inline int sk_peek_offset(struct sock *sk, int flags) { if (unlikely(flags & MSG_PEEK)) { s32 off = READ_ONCE(sk->sk_peek_off); if (off >= 0) return off; } return 0; }

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static inline void sk_peek_offset_bwd(struct sock *sk, int val) { s32 off = READ_ONCE(sk->sk_peek_off); if (unlikely(off >= 0)) { off = max_t(s32, off - val, 0); WRITE_ONCE(sk->sk_peek_off, off); } }

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static inline void sk_peek_offset_fwd(struct sock *sk, int val) { sk_peek_offset_bwd(sk, -val); }

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/* * Hashed lists helper routines */
static inline struct sock *sk_entry(const struct hlist_node *node) { return hlist_entry(node, struct sock, sk_node); }

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static inline struct sock *__sk_head(const struct hlist_head *head) { return hlist_entry(head->first, struct sock, sk_node); }

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static inline struct sock *sk_head(const struct hlist_head *head) { return hlist_empty(head) ? NULL : __sk_head(head); }

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static inline struct sock *__sk_nulls_head(const struct hlist_nulls_head *head) { return hlist_nulls_entry(head->first, struct sock, sk_nulls_node); }

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static inline struct sock *sk_nulls_head(const struct hlist_nulls_head *head) { return hlist_nulls_empty(head) ? NULL : __sk_nulls_head(head); }

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static inline struct sock *sk_next(const struct sock *sk) { return hlist_entry_safe(sk->sk_node.next, struct sock, sk_node); }

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static inline struct sock *sk_nulls_next(const struct sock *sk) { return (!is_a_nulls(sk->sk_nulls_node.next)) ? hlist_nulls_entry(sk->sk_nulls_node.next, struct sock, sk_nulls_node) : NULL; }

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static inline bool sk_unhashed(const struct sock *sk) { return hlist_unhashed(&sk->sk_node); }

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static inline bool sk_hashed(const struct sock *sk) { return !sk_unhashed(sk); }

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static inline void sk_node_init(struct hlist_node *node) { node->pprev = NULL; }

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static inline void sk_nulls_node_init(struct hlist_nulls_node *node) { node->pprev = NULL; }

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static inline void __sk_del_node(struct sock *sk) { __hlist_del(&sk->sk_node); }

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Eric Dumazet15.00%150.00%
Total20100.00%2100.00%

/* NB: equivalent to hlist_del_init_rcu */
static inline bool __sk_del_node_init(struct sock *sk) { if (sk_hashed(sk)) { __sk_del_node(sk); sk_node_init(&sk->sk_node); return true; } return false; }

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Arnaldo Carvalho de Melo3690.00%266.67%
Eric Dumazet410.00%133.33%
Total40100.00%3100.00%

/* Grab socket reference count. This operation is valid only when sk is ALREADY grabbed f.e. it is found in hash table or a list and the lookup is made under lock preventing hash table modifications. */
static __always_inline void sock_hold(struct sock *sk) { atomic_inc(&sk->sk_refcnt); }

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Andrew Morton1995.00%150.00%
Denys Vlasenko15.00%150.00%
Total20100.00%2100.00%

/* Ungrab socket in the context, which assumes that socket refcnt cannot hit zero, f.e. it is true in context of any socketcall. */
static __always_inline void __sock_put(struct sock *sk) { atomic_dec(&sk->sk_refcnt); }

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Andrew Morton1050.00%133.33%
Arnaldo Carvalho de Melo945.00%133.33%
Denys Vlasenko15.00%133.33%
Total20100.00%3100.00%


static inline bool sk_del_node_init(struct sock *sk) { bool rc = __sk_del_node_init(sk); if (rc) { /* paranoid for a while -acme */ WARN_ON(atomic_read(&sk->sk_refcnt) == 1); __sock_put(sk); } return rc; }

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Arnaldo Carvalho de Melo4593.75%150.00%
Eric Dumazet36.25%150.00%
Total48100.00%2100.00%

#define sk_del_node_init_rcu(sk) sk_del_node_init(sk)
static inline bool __sk_nulls_del_node_init_rcu(struct sock *sk) { if (sk_hashed(sk)) { hlist_nulls_del_init_rcu(&sk->sk_nulls_node); return true; } return false; }

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Eric Dumazet35100.00%3100.00%
Total35100.00%3100.00%


static inline bool sk_nulls_del_node_init_rcu(struct sock *sk) { bool rc = __sk_nulls_del_node_init_rcu(sk); if (rc) { /* paranoid for a while -acme */ WARN_ON(atomic_read(&sk->sk_refcnt) == 1); __sock_put(sk); } return rc; }

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Eric Dumazet48100.00%3100.00%
Total48100.00%3100.00%


static inline void __sk_add_node(struct sock *sk, struct hlist_head *list) { hlist_add_head(&sk->sk_node, list); }

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Arnaldo Carvalho de Melo2696.30%266.67%
Eric Dumazet13.70%133.33%
Total27100.00%3100.00%


static inline void sk_add_node(struct sock *sk, struct hlist_head *list) { sock_hold(sk); __sk_add_node(sk, list); }

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Arnaldo Carvalho de Melo2896.55%150.00%
Eric Dumazet13.45%150.00%
Total29100.00%2100.00%


static inline void sk_add_node_rcu(struct sock *sk, struct hlist_head *list) { sock_hold(sk); if (IS_ENABLED(CONFIG_IPV6) && sk->sk_reuseport && sk->sk_family == AF_INET6) hlist_add_tail_rcu(&sk->sk_node, list); else hlist_add_head_rcu(&sk->sk_node, list); }

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Stephen Hemminger3151.67%133.33%
Craig Gallek2846.67%133.33%
Eric Dumazet11.67%133.33%
Total60100.00%3100.00%


static inline void __sk_nulls_add_node_rcu(struct sock *sk, struct hlist_nulls_head *list) { if (IS_ENABLED(CONFIG_IPV6) && sk->sk_reuseport && sk->sk_family == AF_INET6) hlist_nulls_add_tail_rcu(&sk->sk_nulls_node, list); else hlist_nulls_add_head_rcu(&sk->sk_nulls_node, list); }

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Craig Gallek2850.91%125.00%
Eric Dumazet2749.09%375.00%
Total55100.00%4100.00%


static inline void sk_nulls_add_node_rcu(struct sock *sk, struct hlist_nulls_head *list) { sock_hold(sk); __sk_nulls_add_node_rcu(sk, list); }

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Eric Dumazet29100.00%3100.00%
Total29100.00%3100.00%


static inline void __sk_del_bind_node(struct sock *sk) { __hlist_del(&sk->sk_bind_node); }

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Arnaldo Carvalho de Melo1995.00%150.00%
Eric Dumazet15.00%150.00%
Total20100.00%2100.00%


static inline void sk_add_bind_node(struct sock *sk, struct hlist_head *list) { hlist_add_head(&sk->sk_bind_node, list); }

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Arnaldo Carvalho de Melo2696.30%150.00%
Eric Dumazet13.70%150.00%
Total27100.00%2100.00%

#define sk_for_each(__sk, list) \ hlist_for_each_entry(__sk, list, sk_node) #define sk_for_each_rcu(__sk, list) \ hlist_for_each_entry_rcu(__sk, list, sk_node) #define sk_nulls_for_each(__sk, node, list) \ hlist_nulls_for_each_entry(__sk, node, list, sk_nulls_node) #define sk_nulls_for_each_rcu(__sk, node, list) \ hlist_nulls_for_each_entry_rcu(__sk, node, list, sk_nulls_node) #define sk_for_each_from(__sk) \ hlist_for_each_entry_from(__sk, sk_node) #define sk_nulls_for_each_from(__sk, node) \ if (__sk && ({ node = &(__sk)->sk_nulls_node; 1; })) \ hlist_nulls_for_each_entry_from(__sk, node, sk_nulls_node) #define sk_for_each_safe(__sk, tmp, list) \ hlist_for_each_entry_safe(__sk, tmp, list, sk_node) #define sk_for_each_bound(__sk, list) \ hlist_for_each_entry(__sk, list, sk_bind_node) /** * sk_for_each_entry_offset_rcu - iterate over a list at a given struct offset * @tpos: the type * to use as a loop cursor. * @pos: the &struct hlist_node to use as a loop cursor. * @head: the head for your list. * @offset: offset of hlist_node within the struct. * */ #define sk_for_each_entry_offset_rcu(tpos, pos, head, offset) \ for (pos = rcu_dereference((head)->first); \ pos != NULL && \ ({ tpos = (typeof(*tpos) *)((void *)pos - offset); 1;}); \ pos = rcu_dereference(pos->next))
static inline struct user_namespace *sk_user_ns(struct sock *sk) { /* Careful only use this in a context where these parameters * can not change and must all be valid, such as recvmsg from * userspace. */ return sk->sk_socket->file->f_cred->user_ns; }

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Eric W. Biedermann26100.00%1100.00%
Total26100.00%1100.00%

/* Sock flags */ enum sock_flags { SOCK_DEAD, SOCK_DONE, SOCK_URGINLINE, SOCK_KEEPOPEN, SOCK_LINGER, SOCK_DESTROY, SOCK_BROADCAST, SOCK_TIMESTAMP, SOCK_ZAPPED, SOCK_USE_WRITE_QUEUE, /* whether to call sk->sk_write_space in sock_wfree */ SOCK_DBG, /* %SO_DEBUG setting */ SOCK_RCVTSTAMP, /* %SO_TIMESTAMP setting */ SOCK_RCVTSTAMPNS, /* %SO_TIMESTAMPNS setting */ SOCK_LOCALROUTE, /* route locally only, %SO_DONTROUTE setting */ SOCK_QUEUE_SHRUNK, /* write queue has been shrunk recently */ SOCK_MEMALLOC, /* VM depends on this socket for swapping */ SOCK_TIMESTAMPING_RX_SOFTWARE, /* %SOF_TIMESTAMPING_RX_SOFTWARE */ SOCK_FASYNC, /* fasync() active */ SOCK_RXQ_OVFL, SOCK_ZEROCOPY, /* buffers from userspace */ SOCK_WIFI_STATUS, /* push wifi status to userspace */ SOCK_NOFCS, /* Tell NIC not to do the Ethernet FCS. * Will use last 4 bytes of packet sent from * user-space instead. */ SOCK_FILTER_LOCKED, /* Filter cannot be changed anymore */ SOCK_SELECT_ERR_QUEUE, /* Wake select on error queue */ SOCK_RCU_FREE, /* wait rcu grace period in sk_destruct() */ }; #define SK_FLAGS_TIMESTAMP ((1UL << SOCK_TIMESTAMP) | (1UL << SOCK_TIMESTAMPING_RX_SOFTWARE))
static inline void sock_copy_flags(struct sock *nsk, struct sock *osk) { nsk->sk_flags = osk->sk_flags; }

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Ralf Bächle25100.00%1100.00%
Total25100.00%1100.00%


static inline void sock_set_flag(struct sock *sk, enum sock_flags flag) { __set_bit(flag, &sk->sk_flags); }

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Arnaldo Carvalho de Melo26100.00%2100.00%
Total26100.00%2100.00%


static inline void sock_reset_flag(struct sock *sk, enum sock_flags flag) { __clear_bit(flag, &sk->sk_flags); }

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Arnaldo Carvalho de Melo26100.00%2100.00%
Total26100.00%2100.00%


static inline bool sock_flag(const struct sock *sk, enum sock_flags flag) { return test_bit(flag, &sk->sk_flags); }

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Arnaldo Carvalho de Melo2692.86%266.67%
Eric Dumazet27.14%133.33%
Total28100.00%3100.00%

#ifdef CONFIG_NET extern struct static_key memalloc_socks;
static inline int sk_memalloc_socks(void) { return static_key_false(&memalloc_socks); }

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Mel Gorman16100.00%1100.00%
Total16100.00%1100.00%

#else
static inline int sk_memalloc_socks(void) { return 0; }

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Mel Gorman12100.00%1100.00%
Total12100.00%1100.00%

#endif
static inline gfp_t sk_gfp_mask(const struct sock *sk, gfp_t gfp_mask) { return gfp_mask | (sk->sk_allocation & __GFP_MEMALLOC); }

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PersonTokensPropCommitsCommitProp
Mel Gorman2488.89%250.00%
Eric Dumazet311.11%250.00%
Total27100.00%4100.00%


static inline void sk_acceptq_removed(struct sock *sk) { sk->sk_ack_backlog--; }

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Arnaldo Carvalho de Melo17100.00%1100.00%
Total17100.00%1100.00%


static inline void sk_acceptq_added(struct sock *sk) { sk->sk_ack_backlog++; }

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Arnaldo Carvalho de Melo17100.00%1100.00%
Total17100.00%1100.00%


static inline bool sk_acceptq_is_full(const struct sock *sk) { return sk->sk_ack_backlog > sk->sk_max_ack_backlog; }

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Arnaldo Carvalho de Melo1986.36%133.33%
Eric Dumazet29.09%133.33%
David S. Miller14.55%133.33%
Total22100.00%3100.00%

/* * Compute minimal free write space needed to queue new packets. */
static inline int sk_stream_min_wspace(const struct sock *sk) { return sk->sk_wmem_queued >> 1; }

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Arnaldo Carvalho de Melo1785.00%133.33%
Eric Dumazet315.00%266.67%
Total20100.00%3100.00%


static inline int sk_stream_wspace(const struct sock *sk) { return sk->sk_sndbuf - sk->sk_wmem_queued; }

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Arnaldo Carvalho de Melo2195.45%150.00%
Eric Dumazet14.55%150.00%
Total22100.00%2100.00%

void sk_stream_write_space(struct sock *sk); /* OOB backlog add */
static inline void __sk_add_backlog(struct sock *sk, struct sk_buff *skb) { /* dont let skb dst not refcounted, we are going to leave rcu lock */ skb_dst_force_safe(skb); if (!sk->sk_backlog.tail) sk->sk_backlog.head = skb; else sk->sk_backlog.tail->next = skb; sk->sk_backlog.tail = skb; skb->next = NULL; }

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PersonTokensPropCommitsCommitProp
Stephen Hemminger5584.62%120.00%
Eric Dumazet69.23%240.00%
Linus Torvalds (pre-git)34.62%120.00%
Yi Zhu11.54%120.00%
Total65100.00%5100.00%

/* * Take into account size of receive queue and backlog queue * Do not take into account this skb truesize, * to allow even a single big packet to come. */
static inline bool sk_rcvqueues_full(const struct sock *sk, unsigned int limit) { unsigned int qsize = sk->sk_backlog.len + atomic_read(&sk->sk_rmem_alloc); return qsize > limit; }

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Eric Dumazet2255.00%266.67%
Yi Zhu1845.00%133.33%
Total40100.00%3100.00%

/* The per-socket spinlock must be held here. */
static inline __must_check int sk_add_backlog(struct sock *sk, struct sk_buff *skb, unsigned int limit) { if (sk_rcvqueues_full(sk, limit)) return -ENOBUFS; /* * If the skb was allocated from pfmemalloc reserves, only * allow SOCK_MEMALLOC sockets to use it as this socket is * helping free memory */ if (skb_pfmemalloc(skb) && !sock_flag(sk, SOCK_MEMALLOC)) return -ENOMEM; __sk_add_backlog(sk, skb); sk->sk_backlog.len += skb->truesize; return 0; }

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PersonTokensPropCommitsCommitProp
Eric Dumazet4864.00%360.00%
Yi Zhu2736.00%240.00%
Total75100.00%5100.00%

int __sk_backlog_rcv(struct sock *sk, struct sk_buff *skb);
static inline int sk_backlog_rcv(struct sock *sk, struct sk_buff *skb) { if (sk_memalloc_socks() && skb_pfmemalloc(skb)) return __sk_backlog_rcv(sk, skb); return sk->sk_backlog_rcv(sk, skb); }

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Peter Zijlstra2760.00%150.00%
Mel Gorman1840.00%150.00%
Total45100.00%2100.00%


static inline void sk_incoming_cpu_update(struct sock *sk) { sk->sk_incoming_cpu = raw_smp_processor_id(); }

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Eric Dumazet19100.00%1100.00%
Total19100.00%1100.00%


static inline void sock_rps_record_flow_hash(__u32 hash) { #ifdef CONFIG_RPS struct rps_sock_flow_table *sock_flow_table; rcu_read_lock(); sock_flow_table = rcu_dereference(rps_sock_flow_table); rps_record_sock_flow(sock_flow_table, hash); rcu_read_unlock(); #endif }

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David S. Miller3690.00%150.00%
Tom Herbert410.00%150.00%
Total40100.00%2100.00%


static inline void sock_rps_record_flow(const struct sock *sk) { #ifdef CONFIG_RPS if (static_key_false(&rfs_needed)) { /* Reading sk->sk_rxhash might incur an expensive cache line * miss. * * TCP_ESTABLISHED does cover almost all states where RFS * might be useful, and is cheaper [1] than testing : * IPv4: inet_sk(sk)->inet_daddr * IPv6: ipv6_addr_any(&sk->sk_v6_daddr) * OR an additional socket flag * [1] : sk_state and sk_prot are in the same cache line. */ if (sk->sk_state == TCP_ESTABLISHED) sock_rps_record_flow_hash(sk->sk_rxhash); } #endif }

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Tom Herbert2045.45%125.00%
Eric Dumazet1943.18%250.00%
Zhi Yong Wu511.36%125.00%
Total44100.00%4100.00%


static inline void sock_rps_save_rxhash(struct sock *sk, const struct sk_buff *skb) { #ifdef CONFIG_RPS if (unlikely(sk->sk_rxhash != skb->hash)) sk->sk_rxhash = skb->hash; #endif }

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David S. Miller3375.00%133.33%
Tom Herbert1125.00%266.67%
Total44100.00%3100.00%


static inline void sock_rps_reset_rxhash(struct sock *sk) { #ifdef CONFIG_RPS sk->sk_rxhash = 0; #endif }

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Tom Herbert23100.00%1100.00%
Total23100.00%1100.00%

#define sk_wait_event(__sk, __timeo, __condition, __wait) \ ({ int __rc; \ release_sock(__sk); \ __rc = __condition; \ if (!__rc) { \ *(__timeo) = wait_woken(__wait, \ TASK_INTERRUPTIBLE, \ *(__timeo)); \ } \ sched_annotate_sleep(); \ lock_sock(__sk); \ __rc = __condition; \ __rc; \ }) int sk_stream_wait_connect(struct sock *sk, long *timeo_p); int sk_stream_wait_memory(struct sock *sk, long *timeo_p); void sk_stream_wait_close(struct sock *sk, long timeo_p); int sk_stream_error(struct sock *sk, int flags, int err); void sk_stream_kill_queues(struct sock *sk); void sk_set_memalloc(struct sock *sk); void sk_clear_memalloc(struct sock *sk); void __sk_flush_backlog(struct sock *sk);
static inline bool sk_flush_backlog(struct sock *sk) { if (unlikely(READ_ONCE(sk->sk_backlog.tail))) { __sk_flush_backlog(sk); return true; } return false; }

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Eric Dumazet39100.00%1100.00%
Total39100.00%1100.00%

int sk_wait_data(struct sock *sk, long *timeo, const struct sk_buff *skb); struct request_sock_ops; struct timewait_sock_ops; struct inet_hashinfo; struct raw_hashinfo; struct smc_hashinfo; struct module; /* * caches using SLAB_TYPESAFE_BY_RCU should let .next pointer from nulls nodes * un-modified. Special care is taken when initializing object to zero. */
static inline void sk_prot_clear_nulls(struct sock *sk, int size) { if (offsetof(struct sock, sk_node.next) != 0) memset(sk, 0, offsetof(struct sock, sk_node.next)); memset(&sk->sk_node.pprev, 0, size - offsetof(struct sock, sk_node.pprev)); }

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Eric Dumazet70100.00%1100.00%
Total70100.00%1100.00%

/* Networking protocol blocks we attach to sockets. * socket layer -> transport layer interface */ struct proto { void (*close)(struct sock *sk, long timeout); int (*connect)(struct sock *sk, struct sockaddr *uaddr, int addr_len); int (*disconnect)(struct sock *sk, int flags); struct sock * (*accept)(struct sock *sk, int flags, int *err, bool kern); int (*ioctl)(struct sock *sk, int cmd, unsigned long arg); int (*init)(struct sock *sk); void (*destroy)(struct sock *sk); void (*shutdown)(struct sock *sk, int how); int (*setsockopt)(struct sock *sk, int level, int optname, char __user *optval, unsigned int optlen); int (*getsockopt)(struct sock *sk, int level, int optname, char __user *optval, int __user *option); void (*keepalive)(struct sock *sk, int valbool); #ifdef CONFIG_COMPAT int (*compat_setsockopt)(struct sock *sk, int level, int optname, char __user *optval, unsigned int optlen); int (*compat_getsockopt)(struct sock *sk, int level, int optname, char __user *optval, int __user *option); int (*compat_ioctl)(struct sock *sk, unsigned int cmd, unsigned long arg); #endif int (*sendmsg)(struct sock *sk, struct msghdr *msg, size_t len); int (*recvmsg)(struct sock *sk, struct msghdr *msg, size_t len, int noblock, int flags, int *addr_len); int (*sendpage)(struct sock *sk, struct page *page, int offset, size_t size, int flags); int (*bind)(struct sock *sk, struct sockaddr *uaddr, int addr_len); int (*backlog_rcv) (struct sock *sk, struct sk_buff *skb); void (*release_cb)(struct sock *sk); /* Keeping track of sk's, looking them up, and port selection methods. */ int (*hash)(struct sock *sk); void (*unhash)(struct sock *sk); void (*rehash)(struct sock *sk); int (*get_port)(struct sock *sk, unsigned short snum); /* Keeping track of sockets in use */ #ifdef CONFIG_PROC_FS unsigned int inuse_idx; #endif bool (*stream_memory_free)(const struct sock *sk); /* Memory pressure */ void (*enter_memory_pressure)(struct sock *sk); atomic_long_t *memory_allocated; /* Current allocated memory. */ struct percpu_counter *sockets_allocated; /* Current number of sockets. */ /* * Pressure flag: try to collapse. * Technical note: it is used by multiple contexts non atomically. * All the __sk_mem_schedule() is of this nature: accounting * is strict, actions are advisory and have some latency. */ int *memory_pressure; long *sysctl_mem; int *sysctl_wmem; int *sysctl_rmem; int max_header; bool no_autobind; struct kmem_cache *slab; unsigned int obj_size; int slab_flags; struct percpu_counter *orphan_count; struct request_sock_ops *rsk_prot; struct timewait_sock_ops *twsk_prot; union { struct inet_hashinfo *hashinfo; struct udp_table *udp_table; struct raw_hashinfo *raw_hash; struct smc_hashinfo *smc_hash; } h; struct module *owner; char name[32]; struct list_head node; #ifdef SOCK_REFCNT_DEBUG atomic_t socks; #endif int (*diag_destroy)(struct sock *sk, int err); }; int proto_register(struct proto *prot, int alloc_slab); void proto_unregister(struct proto *prot); #ifdef SOCK_REFCNT_DEBUG
static inline void sk_refcnt_debug_inc(struct sock *sk) { atomic_inc(&sk->sk_prot->socks); }

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Arnaldo Carvalho de Melo22100.00%1100.00%
Total22100.00%1100.00%


static inline void sk_refcnt_debug_dec(struct sock *sk) { atomic_dec(&sk->sk_prot->socks); printk(KERN_DEBUG "%s socket %p released, %d are still alive\n", sk->sk_prot->name, sk, atomic_read(&sk->sk_prot->socks)); }

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Arnaldo Carvalho de Melo46100.00%1100.00%
Total46100.00%1100.00%


static inline void sk_refcnt_debug_release(const struct sock *sk) { if (atomic_read(&sk->sk_refcnt) != 1) printk(KERN_DEBUG "Destruction of the %s socket %p delayed, refcnt=%d\n", sk->sk_prot->name, sk, atomic_read(&sk->sk_refcnt)); }

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Arnaldo Carvalho de Melo4697.87%150.00%
Ying Xue12.13%150.00%
Total47100.00%2100.00%

#else /* SOCK_REFCNT_DEBUG */ #define sk_refcnt_debug_inc(sk) do { } while (0) #define sk_refcnt_debug_dec(sk) do { } while (0) #define sk_refcnt_debug_release(sk) do { } while (0) #endif /* SOCK_REFCNT_DEBUG */
static inline bool sk_stream_memory_free(const struct sock *sk) { if (sk->sk_wmem_queued >= sk->sk_sndbuf) return false; return sk->sk_prot->stream_memory_free ? sk->sk_prot->stream_memory_free(sk) : true; }

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Eric Dumazet44100.00%1100.00%
Total44100.00%1100.00%


static inline bool sk_stream_is_writeable(const struct sock *sk) { return sk_stream_wspace(sk) >= sk_stream_min_wspace(sk) && sk_stream_memory_free(sk); }

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Eric Dumazet29100.00%2100.00%
Total29100.00%2100.00%


static inline int sk_under_cgroup_hierarchy(struct sock *sk, struct cgroup *ancestor) { #ifdef CONFIG_SOCK_CGROUP_DATA return cgroup_is_descendant(sock_cgroup_ptr(&sk->sk_cgrp_data), ancestor); #else return -ENOTSUPP; #endif }

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Daniel Borkmann42100.00%1100.00%
Total42100.00%1100.00%


static inline bool sk_has_memory_pressure(const struct sock *sk) { return sk->sk_prot->memory_pressure != NULL; }

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Glauber de Oliveira Costa22100.00%1100.00%
Total22100.00%1100.00%


static inline bool sk_under_memory_pressure(const struct sock *sk) { if (!sk->sk_prot->memory_pressure) return false; if (mem_cgroup_sockets_enabled && sk->sk_memcg && mem_cgroup_under_socket_pressure(sk->sk_memcg)) return true; return !!*sk->sk_prot->memory_pressure; }

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Glauber de Oliveira Costa4381.13%240.00%
Johannes Weiner916.98%240.00%
Christoph Paasch11.89%120.00%
Total53100.00%5100.00%


static inline void sk_leave_memory_pressure(struct sock *sk) { int *memory_pressure = sk->sk_prot->memory_pressure; if (!memory_pressure) return; if (*memory_pressure) *memory_pressure = 0; }

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Glauber de Oliveira Costa38100.00%2100.00%
Total38100.00%2100.00%


static inline void sk_enter_memory_pressure(struct sock *sk) { if (!sk->sk_prot->enter_memory_pressure) return; sk->sk_prot->enter_memory_pressure(sk); }

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Glauber de Oliveira Costa31100.00%2100.00%
Total31100.00%2100.00%


static inline long sk_memory_allocated(const struct sock *sk) { return atomic_long_read(sk->sk_prot->memory_allocated); }

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Glauber de Oliveira Costa2191.30%266.67%
Johannes Weiner28.70%133.33%
Total23100.00%3100.00%


static inline long sk_memory_allocated_add(struct sock *sk, int amt) { return atomic_long_add_return(amt, sk->sk_prot->memory_allocated); }

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Glauber de Oliveira Costa2592.59%266.67%
Johannes Weiner27.41%133.33%
Total27100.00%3100.00%


static inline void sk_memory_allocated_sub(struct sock *sk, int amt) { atomic_long_sub(amt, sk->sk_prot->memory_allocated); }

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PersonTokensPropCommitsCommitProp
Glauber de Oliveira Costa2388.46%150.00%
Johannes Weiner311.54%150.00%
Total26100.00%2100.00%


static inline void sk_sockets_allocated_dec(struct sock *sk) { percpu_counter_dec(sk->sk_prot->sockets_allocated); }

Contributors

PersonTokensPropCommitsCommitProp
Glauber de Oliveira Costa1990.48%266.67%
Johannes Weiner29.52%133.33%
Total21100.00%3100.00%


static inline void sk_sockets_allocated_inc(struct sock *sk) { percpu_counter_inc(sk->sk_prot->sockets_allocated); }

Contributors

PersonTokensPropCommitsCommitProp
Glauber de Oliveira Costa1990.48%266.67%
Johannes Weiner29.52%133.33%
Total21100.00%3100.00%


static inline int sk_sockets_allocated_read_positive(struct sock *sk) { return percpu_counter_read_positive(sk->sk_prot->sockets_allocated); }

Contributors

PersonTokensPropCommitsCommitProp
Glauber de Oliveira Costa2090.91%250.00%
Johannes Weiner14.55%125.00%
Eric Dumazet14.55%125.00%
Total22100.00%4100.00%


static inline int proto_sockets_allocated_sum_positive(struct proto *prot) { return percpu_counter_sum_positive(prot->sockets_allocated); }

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PersonTokensPropCommitsCommitProp
Glauber de Oliveira Costa20100.00%1100.00%
Total20100.00%1100.00%


static inline long proto_memory_allocated(struct proto *prot) { return atomic_long_read(prot->memory_allocated); }

Contributors

PersonTokensPropCommitsCommitProp
Glauber de Oliveira Costa20100.00%1100.00%
Total20100.00%1100.00%


static inline bool proto_memory_pressure(struct proto *prot) { if (!prot->memory_pressure) return false; return !!*prot->memory_pressure; }

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PersonTokensPropCommitsCommitProp
Glauber de Oliveira Costa30100.00%1100.00%
Total30100.00%1100.00%

#ifdef CONFIG_PROC_FS /* Called with local bh disabled */ void sock_prot_inuse_add(struct net *net, struct proto *prot, int inc); int sock_prot_inuse_get(struct net *net, struct proto *proto); #else
static inline void sock_prot_inuse_add(struct net *net, struct proto *prot, int inc) { }

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PersonTokensPropCommitsCommitProp
Eric Dumazet1473.68%266.67%
Pavel Emelyanov526.32%133.33%
Total19100.00%3100.00%

#endif /* With per-bucket locks this operation is not-atomic, so that * this version is not worse. */
static inline int __sk_prot_rehash(struct sock *sk) { sk->sk_prot->unhash(sk); return sk->sk_prot->hash(sk); }

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PersonTokensPropCommitsCommitProp
Arnaldo Carvalho de Melo2890.32%150.00%
Craig Gallek39.68%150.00%
Total31100.00%2100.00%

/* About 10 seconds */ #define SOCK_DESTROY_TIME (10*HZ) /* Sockets 0-1023 can't be bound to unless you are superuser */ #define PROT_SOCK 1024 #define SHUTDOWN_MASK 3 #define RCV_SHUTDOWN 1 #define SEND_SHUTDOWN 2 #define SOCK_SNDBUF_LOCK 1 #define SOCK_RCVBUF_LOCK 2 #define SOCK_BINDADDR_LOCK 4 #define SOCK_BINDPORT_LOCK 8 struct socket_alloc { struct socket socket; struct inode vfs_inode; };
static inline struct socket *SOCKET_I(struct inode *inode) { return &container_of(inode, struct socket_alloc, vfs_inode)->socket; }

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Christoph Hellwig28100.00%1100.00%
Total28100.00%1100.00%


static inline struct inode *SOCK_INODE(struct socket *socket) { return &container_of(socket, struct socket_alloc, socket)->vfs_inode; }

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PersonTokensPropCommitsCommitProp
Christoph Hellwig28100.00%1100.00%
Total28100.00%1100.00%

/* * Functions for memory accounting */ int __sk_mem_raise_allocated(struct sock *sk, int size, int amt, int kind); int __sk_mem_schedule(struct sock *sk, int size, int kind); void __sk_mem_reduce_allocated(struct sock *sk, int amount); void __sk_mem_reclaim(struct sock *sk, int amount); /* We used to have PAGE_SIZE here, but systems with 64KB pages * do not necessarily have 16x time more memory than 4KB ones. */ #define SK_MEM_QUANTUM 4096 #define SK_MEM_QUANTUM_SHIFT ilog2(SK_MEM_QUANTUM) #define SK_MEM_SEND 0 #define SK_MEM_RECV 1 /* sysctl_mem values are in pages, we convert them in SK_MEM_QUANTUM units */
static inline long sk_prot_mem_limits(const struct sock *sk, int index) { long val = sk->sk_prot->sysctl_mem[index]; #if PAGE_SIZE > SK_MEM_QUANTUM val <<= PAGE_SHIFT - SK_MEM_QUANTUM_SHIFT; #elif PAGE_SIZE < SK_MEM_QUANTUM val >>= SK_MEM_QUANTUM_SHIFT - PAGE_SHIFT; #endif return val; }

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PersonTokensPropCommitsCommitProp
Eric Dumazet55100.00%1100.00%
Total55100.00%1100.00%


static inline int sk_mem_pages(int amt) { return (amt + SK_MEM_QUANTUM - 1) >> SK_MEM_QUANTUM_SHIFT; }

Contributors

PersonTokensPropCommitsCommitProp
Arnaldo Carvalho de Melo1257.14%133.33%
Eric Dumazet628.57%133.33%
Hideo Aoki314.29%133.33%
Total21100.00%3100.00%


static inline bool sk_has_account(struct sock *sk) { /* return true if protocol supports memory accounting */ return !!sk->sk_prot->memory_allocated; }

Contributors

PersonTokensPropCommitsCommitProp
Arnaldo Carvalho de Melo1254.55%133.33%
Hideo Aoki940.91%133.33%
Eric Dumazet14.55%133.33%
Total22100.00%3100.00%


static inline bool sk_wmem_schedule(struct sock *sk, int size) { if (!sk_has_account(sk)) return true; return size <= sk->sk_forward_alloc || __sk_mem_schedule(sk, size, SK_MEM_SEND); }

Contributors

PersonTokensPropCommitsCommitProp
Arnaldo Carvalho de Melo2354.76%133.33%
Hideo Aoki1740.48%133.33%
Eric Dumazet24.76%133.33%
Total42100.00%3100.00%


static inline bool sk_rmem_schedule(struct sock *sk, struct sk_buff *skb, int size) { if (!sk_has_account(sk)) return true; return size<= sk->sk_forward_alloc || __sk_mem_schedule(sk, size, SK_MEM_RECV) || skb_pfmemalloc(skb); }

Contributors

PersonTokensPropCommitsCommitProp
Herbert Xu2751.92%125.00%
Hideo Aoki1325.00%125.00%
Mel Gorman1019.23%125.00%
Eric Dumazet23.85%125.00%
Total52100.00%4100.00%


static inline void sk_mem_reclaim(struct sock *sk) { if (!sk_has_account(sk)) return; if (sk->sk_forward_alloc >= SK_MEM_QUANTUM) __sk_mem_reclaim(sk, sk->sk_forward_alloc); }

Contributors

PersonTokensPropCommitsCommitProp
Hideo Aoki3489.47%150.00%
Eric Dumazet410.53%150.00%
Total38100.00%2100.00%


static inline void sk_mem_reclaim_partial(struct sock *sk) { if (!sk_has_account(sk)) return; if (sk->sk_forward_alloc > SK_MEM_QUANTUM) __sk_mem_reclaim(sk, sk->sk_forward_alloc - 1); }

Contributors

PersonTokensPropCommitsCommitProp
David S. Miller3485.00%150.00%
Eric Dumazet615.00%150.00%
Total40100.00%2100.00%


static inline void sk_mem_charge(struct sock *sk, int size) { if (!sk_has_account(sk)) return; sk->sk_forward_alloc -= size; }

Contributors

PersonTokensPropCommitsCommitProp
Hideo Aoki30100.00%1100.00%
Total30100.00%1100.00%


static inline void sk_mem_uncharge(struct sock *sk, int size) { if (!sk_has_account(sk)) return; sk->sk_forward_alloc += size; /* Avoid a possible overflow. * TCP send queues can make this happen, if sk_mem_reclaim() * is not called and more than 2 GBytes are released at once. * * If we reach 2 MBytes, reclaim 1 MBytes right now, there is * no need to hold that much forward allocation anyway. */ if (unlikely(sk->sk_forward_alloc >= 1 << 21)) __sk_mem_reclaim(sk, 1 << 20); }

Contributors

PersonTokensPropCommitsCommitProp
Hideo Aoki3056.60%150.00%
Eric Dumazet2343.40%150.00%
Total53100.00%2100.00%


static inline void sk_wmem_free_skb(struct sock *sk, struct sk_buff *skb) { sock_set_flag(sk, SOCK_QUEUE_SHRUNK); sk->sk_wmem_queued -= skb->truesize; sk_mem_uncharge(sk, skb->truesize); __kfree_skb(skb); }

Contributors

PersonTokensPropCommitsCommitProp
Hideo Aoki46100.00%1100.00%
Total46100.00%1100.00%


static inline void sock_release_ownership(struct sock *sk) { if (sk->sk_lock.owned) { sk->sk_lock.owned = 0; /* The sk_lock has mutex_unlock() semantics: */ mutex_release(&sk->sk_lock.dep_map, 1, _RET_IP_); } }

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PersonTokensPropCommitsCommitProp
Hannes Frederic Sowa2555.56%150.00%
Eric Dumazet2044.44%150.00%
Total45100.00%2100.00%

/* * Macro so as to not evaluate some arguments when * lockdep is not enabled. * * Mark both the sk_lock and the sk_lock.slock as a * per-address-family lock class. */ #define sock_lock_init_class_and_name(sk, sname, skey, name, key) \ do { \ sk->sk_lock.owned = 0; \ init_waitqueue_head(&sk->sk_lock.wq); \ spin_lock_init(&(sk)->sk_lock.slock); \ debug_check_no_locks_freed((void *)&(sk)->sk_lock, \ sizeof((sk)->sk_lock)); \ lockdep_set_class_and_name(&(sk)->sk_lock.slock, \ (skey), (sname)); \ lockdep_init_map(&(sk)->sk_lock.dep_map, (name), (key), 0); \ } while (0) #ifdef CONFIG_LOCKDEP
static inline bool lockdep_sock_is_held(const struct sock *csk) { struct sock *sk = (struct sock *)csk; return lockdep_is_held(&sk->sk_lock) || lockdep_is_held(&sk->sk_lock.slock); }

Contributors

PersonTokensPropCommitsCommitProp
Hannes Frederic Sowa44100.00%2100.00%
Total44100.00%2100.00%

#endif void lock_sock_nested(struct sock *sk, int subclass);
static inline void lock_sock(struct sock *sk) { lock_sock_nested(sk, 0); }

Contributors

PersonTokensPropCommitsCommitProp
Peter Zijlstra19100.00%1100.00%
Total19100.00%1100.00%

void release_sock(struct sock *sk); /* BH context may only use the following locking interface. */ #define bh_lock_sock(__sk) spin_lock(&((__sk)->sk_lock.slock)) #define bh_lock_sock_nested(__sk) \ spin_lock_nested(&((__sk)->sk_lock.slock), \ SINGLE_DEPTH_NESTING) #define bh_unlock_sock(__sk) spin_unlock(&((__sk)->sk_lock.slock)) bool lock_sock_fast(struct sock *sk); /** * unlock_sock_fast - complement of lock_sock_fast * @sk: socket * @slow: slow mode * * fast unlock socket for user context. * If slow mode is on, we call regular release_sock() */
static inline void unlock_sock_fast(struct sock *sk, bool slow) { if (slow) release_sock(sk); else spin_unlock_bh(&sk->sk_lock.slock); }

Contributors

PersonTokensPropCommitsCommitProp
Eric Dumazet35100.00%2100.00%
Total35100.00%2100.00%

/* Used by processes to "lock" a socket state, so that * interrupts and bottom half handlers won't change it * from under us. It essentially blocks any incoming * packets, so that we won't get any new data or any * packets that change the state of the socket. * * While locked, BH processing will add new packets to * the backlog queue. This queue is processed by the * owner of the socket lock right before it is released. * * Since ~2.3.5 it is also exclusive sleep lock serializing * accesses from user process context. */
static inline void sock_owned_by_me(const struct sock *sk) { #ifdef CONFIG_LOCKDEP WARN_ON_ONCE(!lockdep_sock_is_held(sk) && debug_locks); #endif }

Contributors

PersonTokensPropCommitsCommitProp
Hannes Frederic Sowa2379.31%133.33%
Eric Dumazet620.69%266.67%
Total29100.00%3100.00%


static inline bool sock_owned_by_user(const struct sock *sk) { sock_owned_by_me(sk); return sk->sk_lock.owned; }

Contributors

PersonTokensPropCommitsCommitProp
Eric Dumazet1768.00%150.00%
Hannes Frederic Sowa832.00%150.00%
Total25100.00%2100.00%

/* no reclassification while locks are held */
static inline bool sock_allow_reclassification(const struct sock *csk) { struct sock *sk = (struct sock *)csk; return !sk->sk_lock.owned && !spin_is_locked(&sk->sk_lock.slock); }

Contributors

PersonTokensPropCommitsCommitProp
Hannes Frederic Sowa44100.00%1100.00%
Total44100.00%1100.00%

struct sock *sk_alloc(struct net *net, int family, gfp_t priority, struct proto *prot, int kern); void sk_free(struct sock *sk); void sk_destruct(struct sock *sk); struct sock *sk_clone_lock(const struct sock *sk, const gfp_t priority); void sk_free_unlock_clone(struct sock *sk); struct sk_buff *sock_wmalloc(struct sock *sk, unsigned long size, int force, gfp_t priority); void __sock_wfree(struct sk_buff *skb); void sock_wfree(struct sk_buff *skb); void skb_orphan_partial(struct sk_buff *skb); void sock_rfree(struct sk_buff *skb); void sock_efree(struct sk_buff *skb); #ifdef CONFIG_INET void sock_edemux(struct sk_buff *skb); #else #define sock_edemux sock_efree #endif int sock_setsockopt(struct socket *sock, int level, int op, char __user *optval, unsigned int optlen); int sock_getsockopt(struct socket *sock, int level, int op, char __user *optval, int __user *optlen); struct sk_buff *sock_alloc_send_skb(struct sock *sk, unsigned long size, int noblock, int *errcode); struct sk_buff *sock_alloc_send_pskb(struct sock *sk, unsigned long header_len, unsigned long data_len, int noblock, int *errcode, int max_page_order); void *sock_kmalloc(struct sock *sk, int size, gfp_t priority); void sock_kfree_s(struct sock *sk, void *mem, int size); void sock_kzfree_s(struct sock *sk, void *mem, int size); void sk_send_sigurg(struct sock *sk); struct sockcm_cookie { u32 mark; u16 tsflags; }; int __sock_cmsg_send(struct sock *sk, struct msghdr *msg, struct cmsghdr *cmsg, struct sockcm_cookie *sockc); int sock_cmsg_send(struct sock *sk, struct msghdr *msg, struct sockcm_cookie *sockc); /* * Functions to fill in entries in struct proto_ops when a protocol * does not implement a particular function. */ int sock_no_bind(struct socket *, struct sockaddr *, int); int sock_no_connect(struct socket *, struct sockaddr *, int, int); int sock_no_socketpair(struct socket *, struct socket *); int sock_no_accept(struct socket *, struct socket *, int, bool); int sock_no_getname(struct socket *, struct sockaddr *, int *, int); unsigned int sock_no_poll(struct file *, struct socket *, struct poll_table_struct *); int sock_no_ioctl(struct socket *, unsigned int, unsigned long); int sock_no_listen(struct socket *, int); int sock_no_shutdown(struct socket *, int); int sock_no_getsockopt(struct socket *, int , int, char __user *, int __user *); int sock_no_setsockopt(struct socket *, int, int, char __user *, unsigned int); int sock_no_sendmsg(struct socket *, struct msghdr *, size_t); int sock_no_recvmsg(struct socket *, struct msghdr *, size_t, int); int sock_no_mmap(struct file *file, struct socket *sock, struct vm_area_struct *vma); ssize_t sock_no_sendpage(struct socket *sock, struct page *page, int offset, size_t size, int flags); /* * Functions to fill in entries in struct proto_ops when a protocol * uses the inet style. */ int sock_common_getsockopt(struct socket *sock, int level, int optname, char __user *optval, int __user *optlen); int sock_common_recvmsg(struct socket *sock, struct msghdr *msg, size_t size, int flags); int sock_common_setsockopt(struct socket *sock, int level, int optname, char __user *optval, unsigned int optlen); int compat_sock_common_getsockopt(struct socket *sock, int level, int optname, char __user *optval, int __user *optlen); int compat_sock_common_setsockopt(struct socket *sock, int level, int optname, char __user *optval, unsigned int optlen); void sk_common_release(struct sock *sk); /* * Default socket callbacks and setup code */ /* Initialise core socket variables */ void sock_init_data(struct socket *sock, struct sock *sk); /* * Socket reference counting postulates. * * * Each user of socket SHOULD hold a reference count. * * Each access point to socket (an hash table bucket, reference from a list, * running timer, skb in flight MUST hold a reference count. * * When reference count hits 0, it means it will never increase back. * * When reference count hits 0, it means that no references from * outside exist to this socket and current process on current CPU * is last user and may/should destroy this socket. * * sk_free is called from any context: process, BH, IRQ. When * it is called, socket has no references from outside -> sk_free * may release descendant resources allocated by the socket, but * to the time when it is called, socket is NOT referenced by any * hash tables, lists etc. * * Packets, delivered from outside (from network or from another process) * and enqueued on receive/error queues SHOULD NOT grab reference count, * when they sit in queue. Otherwise, packets will leak to hole, when * socket is looked up by one cpu and unhasing is made by another CPU. * It is true for udp/raw, netlink (leak to receive and error queues), tcp * (leak to backlog). Packet socket does all the processing inside * BR_NETPROTO_LOCK, so that it has not this race condition. UNIX sockets * use separate SMP lock, so that they are prone too. */ /* Ungrab socket and destroy it, if it was the last reference. */
static inline void sock_put(struct sock *sk) { if (atomic_dec_and_test(&sk->sk_refcnt)) sk_free(sk); }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)2696.30%266.67%
Arnaldo Carvalho de Melo13.70%133.33%
Total27100.00%3100.00%

/* Generic version of sock_put(), dealing with all sockets * (TCP_TIMEWAIT, TCP_NEW_SYN_RECV, ESTABLISHED...) */ void sock_gen_put(struct sock *sk); int __sk_receive_skb(struct sock *sk, struct sk_buff *skb, const int nested, unsigned int trim_cap, bool refcounted);
static inline int sk_receive_skb(struct sock *sk, struct sk_buff *skb, const int nested) { return __sk_receive_skb(sk, skb, nested, 1, true); }

Contributors

PersonTokensPropCommitsCommitProp
Willem de Bruijn3394.29%150.00%
Eric Dumazet25.71%150.00%
Total35100.00%2100.00%


static inline void sk_tx_queue_set(struct sock *sk, int tx_queue) { sk->sk_tx_queue_mapping = tx_queue; }

Contributors

PersonTokensPropCommitsCommitProp
Krishna Kumar21100.00%1100.00%
Total21100.00%1100.00%


static inline void sk_tx_queue_clear(struct sock *sk) { sk->sk_tx_queue_mapping = -1; }

Contributors

PersonTokensPropCommitsCommitProp
Krishna Kumar19100.00%1100.00%
Total19100.00%1100.00%


static inline int sk_tx_queue_get(const struct sock *sk) { return sk ? sk->sk_tx_queue_mapping : -1; }

Contributors

PersonTokensPropCommitsCommitProp
Krishna Kumar1982.61%150.00%
Tom Herbert417.39%150.00%
Total23100.00%2100.00%


static inline void sk_set_socket(struct sock *sk, struct socket *sock) { sk_tx_queue_clear(sk); sk->sk_socket = sock; }

Contributors

PersonTokensPropCommitsCommitProp
David S. Miller2382.14%150.00%
Krishna Kumar517.86%150.00%
Total28100.00%2100.00%


static inline wait_queue_head_t *sk_sleep(struct sock *sk) { BUILD_BUG_ON(offsetof(struct socket_wq, wait) != 0); return &rcu_dereference_raw(sk->sk_wq)->wait; }

Contributors

PersonTokensPropCommitsCommitProp
Eric Dumazet37100.00%3100.00%
Total37100.00%3100.00%

/* Detach socket from process context. * Announce socket dead, detach it from wait queue and inode. * Note that parent inode held reference count on this struct sock, * we do not release it in this function, because protocol * probably wants some additional cleanups or even continuing * to work with this socket (TCP). */
static inline void sock_orphan(struct sock *sk) { write_lock_bh(&sk->sk_callback_lock); sock_set_flag(sk, SOCK_DEAD); sk_set_socket(sk, NULL); sk->sk_wq = NULL; write_unlock_bh(&sk->sk_callback_lock); }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)3675.00%337.50%
Arnaldo Carvalho de Melo510.42%225.00%
David S. Miller48.33%112.50%
James Morris24.17%112.50%
Eric Dumazet12.08%112.50%
Total48100.00%8100.00%


static inline void sock_graft(struct sock *sk, struct socket *parent) { write_lock_bh(&sk->sk_callback_lock); sk->sk_wq = parent->wq; parent->sk = sk; sk_set_socket(sk, parent); sk->sk_uid = SOCK_INODE(parent)->i_uid; security_sock_graft(sk, parent); write_unlock_bh(&sk->sk_callback_lock); }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)4562.50%333.33%
Lorenzo Colitti1115.28%111.11%
Venkat Yekkirala79.72%111.11%
David S. Miller45.56%111.11%
Eric Dumazet34.17%222.22%
Arnaldo Carvalho de Melo22.78%111.11%
Total72100.00%9100.00%

kuid_t sock_i_uid(struct sock *sk); unsigned long sock_i_ino(struct sock *sk);
static inline kuid_t sock_net_uid(const struct net *net, const struct sock *sk) { return sk ? sk->sk_uid : make_kuid(net->user_ns, 0); }

Contributors

PersonTokensPropCommitsCommitProp
Lorenzo Colitti35100.00%1100.00%
Total35100.00%1100.00%


static inline u32 net_tx_rndhash(void) { u32 v = prandom_u32(); return v ?: 1; }

Contributors

PersonTokensPropCommitsCommitProp
Eric Dumazet21100.00%1100.00%
Total21100.00%1100.00%


static inline void sk_set_txhash(struct sock *sk) { sk->sk_txhash = net_tx_rndhash(); }

Contributors

PersonTokensPropCommitsCommitProp
Tom Herbert1894.74%150.00%
Eric Dumazet15.26%150.00%
Total19100.00%2100.00%


static inline void sk_rethink_txhash(struct sock *sk) { if (sk->sk_txhash) sk_set_txhash(sk); }

Contributors

PersonTokensPropCommitsCommitProp
Tom Herbert23100.00%1100.00%
Total23100.00%1100.00%


static inline struct dst_entry * __sk_dst_get(struct sock *sk) { return rcu_dereference_check(sk->sk_dst_cache, lockdep_sock_is_held(sk)); }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)1866.67%240.00%
Eric Dumazet725.93%120.00%
Arnaldo Carvalho de Melo13.70%120.00%
Hannes Frederic Sowa13.70%120.00%
Total27100.00%5100.00%


static inline struct dst_entry * sk_dst_get(struct sock *sk) { struct dst_entry *dst; rcu_read_lock(); dst = rcu_dereference(sk->sk_dst_cache); if (dst && !atomic_inc_not_zero(&dst->__refcnt)) dst = NULL; rcu_read_unlock(); return dst; }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)3157.41%240.00%
Eric Dumazet2240.74%240.00%
Arnaldo Carvalho de Melo11.85%120.00%
Total54100.00%5100.00%


static inline void dst_negative_advice(struct sock *sk) { struct dst_entry *ndst, *dst = __sk_dst_get(sk); sk_rethink_txhash(sk); if (dst && dst->ops->negative_advice) { ndst = dst->ops->negative_advice(dst); if (ndst != dst) { rcu_assign_pointer(sk->sk_dst_cache, ndst); sk_tx_queue_clear(sk); sk->sk_dst_pending_confirm = 0; } } }

Contributors

PersonTokensPropCommitsCommitProp
Eric Dumazet6276.54%120.00%
Linus Torvalds (pre-git)78.64%120.00%
Julian Anastasov67.41%120.00%
Tom Herbert56.17%120.00%
Zhao, Gang11.23%120.00%
Total81100.00%5100.00%


static inline void __sk_dst_set(struct sock *sk, struct dst_entry *dst) { struct dst_entry *old_dst; sk_tx_queue_clear(sk); sk->sk_dst_pending_confirm = 0; old_dst = rcu_dereference_protected(sk->sk_dst_cache, lockdep_sock_is_held(sk)); rcu_assign_pointer(sk->sk_dst_cache, dst); dst_release(old_dst); }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)3659.02%228.57%
Eric Dumazet1219.67%228.57%
Julian Anastasov69.84%114.29%
Krishna Kumar58.20%114.29%
Arnaldo Carvalho de Melo23.28%114.29%
Total61100.00%7100.00%


static inline void sk_dst_set(struct sock *sk, struct dst_entry *dst) { struct dst_entry *old_dst; sk_tx_queue_clear(sk); sk->sk_dst_pending_confirm = 0; old_dst = xchg((__force struct dst_entry **)&sk->sk_dst_cache, dst); dst_release(old_dst); }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)3052.63%240.00%
Eric Dumazet2136.84%240.00%
Julian Anastasov610.53%120.00%
Total57100.00%5100.00%


static inline void __sk_dst_reset(struct sock *sk) { __sk_dst_set(sk, NULL); }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)1578.95%250.00%
Krishna Kumar210.53%125.00%
Eric Dumazet210.53%125.00%
Total19100.00%4100.00%


static inline void sk_dst_reset(struct sock *sk) { sk_dst_set(sk, NULL); }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)1684.21%266.67%
Eric Dumazet315.79%133.33%
Total19100.00%3100.00%

struct dst_entry *__sk_dst_check(struct sock *sk, u32 cookie); struct dst_entry *sk_dst_check(struct sock *sk, u32 cookie);
static inline void sk_dst_confirm(struct sock *sk) { if (!sk->sk_dst_pending_confirm) sk->sk_dst_pending_confirm = 1; }

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PersonTokensPropCommitsCommitProp
Julian Anastasov25100.00%1100.00%
Total25100.00%1100.00%


static inline void sock_confirm_neigh(struct sk_buff *skb, struct neighbour *n) { if (skb_get_dst_pending_confirm(skb)) { struct sock *sk = skb->sk; unsigned long now = jiffies; /* avoid dirtying neighbour */ if (n->confirmed != now) n->confirmed = now; if (sk && sk->sk_dst_pending_confirm) sk->sk_dst_pending_confirm = 0; } }

Contributors

PersonTokensPropCommitsCommitProp
Julian Anastasov70100.00%1100.00%
Total70100.00%1100.00%

bool sk_mc_loop(struct sock *sk);
static inline bool sk_can_gso(const struct sock *sk) { return net_gso_ok(sk->sk_route_caps, sk->sk_gso_type); }

Contributors

PersonTokensPropCommitsCommitProp
Herbert Xu2496.00%150.00%
Eric Dumazet14.00%150.00%
Total25100.00%2100.00%

void sk_setup_caps(struct sock *sk, struct dst_entry *dst);
static inline void sk_nocaps_add(struct sock *sk, netdev_features_t flags) { sk->sk_route_nocaps |= flags; sk->sk_route_caps &= ~flags; }

Contributors

PersonTokensPropCommitsCommitProp
Eric Dumazet2796.43%150.00%
Michał Mirosław13.57%150.00%
Total28100.00%2100.00%


static inline bool sk_check_csum_caps(struct sock *sk) { return (sk->sk_route_caps & NETIF_F_HW_CSUM) || (sk->sk_family == PF_INET && (sk->sk_route_caps & NETIF_F_IP_CSUM)) || (sk->sk_family == PF_INET6 && (sk->sk_route_caps & NETIF_F_IPV6_CSUM)); }

Contributors

PersonTokensPropCommitsCommitProp
Tom Herbert53100.00%1100.00%
Total53100.00%1100.00%


static inline int skb_do_copy_data_nocache(struct sock *sk, struct sk_buff *skb, struct iov_iter *from, char *to, int copy, int offset) { if (skb->ip_summed == CHECKSUM_NONE) { __wsum csum = 0; if (!csum_and_copy_from_iter_full(to, copy, &csum, from)) return -EFAULT; skb->csum = csum_block_add(skb->csum, csum, offset); } else if (sk->sk_route_caps & NETIF_F_NOCACHE_COPY) { if (!copy_from_iter_full_nocache(to, copy, from)) return -EFAULT; } else if (!copy_from_iter_full(to, copy, from)) return -EFAULT; return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Tom Herbert10481.25%125.00%
Al Viro2015.62%250.00%
Wei Yongjun43.12%125.00%
Total128100.00%4100.00%


static inline int skb_add_data_nocache(struct sock *sk, struct sk_buff *skb, struct iov_iter *from, int copy) { int err, offset = skb->len; err = skb_do_copy_data_nocache(sk, skb, from, skb_put(skb, copy), copy, offset); if (err) __skb_trim(skb, offset); return err; }

Contributors

PersonTokensPropCommitsCommitProp
Tom Herbert5984.29%133.33%
Wei Yongjun912.86%133.33%
Al Viro22.86%133.33%
Total70100.00%3100.00%


static inline int skb_copy_to_page_nocache(struct sock *sk, struct iov_iter *from, struct sk_buff *skb, struct page *page, int off, int copy) { int err; err = skb_do_copy_data_nocache(sk, skb, from, page_address(page) + off, copy, skb->len); if (err) return err; skb->len += copy; skb->data_len += copy; skb->truesize += copy; sk->sk_wmem_queued += copy; sk_mem_charge(sk, copy); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Tom Herbert9594.06%133.33%
Wei Yongjun43.96%133.33%
Al Viro21.98%133.33%
Total101100.00%3100.00%

/** * sk_wmem_alloc_get - returns write allocations * @sk: socket * * Returns sk_wmem_alloc minus initial offset of one */
static inline int sk_wmem_alloc_get(const struct sock *sk) { return atomic_read(&sk->sk_wmem_alloc) - 1; }

Contributors

PersonTokensPropCommitsCommitProp
Eric Dumazet24100.00%1100.00%
Total24100.00%1100.00%

/** * sk_rmem_alloc_get - returns read allocations * @sk: socket * * Returns sk_rmem_alloc */
static inline int sk_rmem_alloc_get(const struct sock *sk) { return atomic_read(&sk->sk_rmem_alloc); }

Contributors

PersonTokensPropCommitsCommitProp
Eric Dumazet22100.00%1100.00%
Total22100.00%1100.00%

/** * sk_has_allocations - check if allocations are outstanding * @sk: socket * * Returns true if socket has write or read allocations */
static inline bool sk_has_allocations(const struct sock *sk) { return sk_wmem_alloc_get(sk) || sk_rmem_alloc_get(sk); }

Contributors

PersonTokensPropCommitsCommitProp
Eric Dumazet24100.00%2100.00%
Total24100.00%2100.00%

/** * skwq_has_sleeper - check if there are any waiting processes * @wq: struct socket_wq * * Returns true if socket_wq has waiting processes * * The purpose of the skwq_has_sleeper and sock_poll_wait is to wrap the memory * barrier call. They were added due to the race found within the tcp code. * * Consider following tcp code paths: * * CPU1 CPU2 * * sys_select receive packet * ... ... * __add_wait_queue update tp->rcv_nxt * ... ... * tp->rcv_nxt check sock_def_readable * ... { * schedule rcu_read_lock(); * wq = rcu_dereference(sk->sk_wq); * if (wq && waitqueue_active(&wq->wait)) * wake_up_interruptible(&wq->wait) * ... * } * * The race for tcp fires when the __add_wait_queue changes done by CPU1 stay * in its cache, and so does the tp->rcv_nxt update on CPU2 side. The CPU1 * could then endup calling schedule and sleep forever if there are no more * data on the socket. * */
static inline bool skwq_has_sleeper(struct socket_wq *wq) { return wq && wq_has_sleeper(&wq->wait); }

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PersonTokensPropCommitsCommitProp
Jiri Olsa1356.52%133.33%
Eric Dumazet834.78%133.33%
Herbert Xu28.70%133.33%
Total23100.00%3100.00%

/** * sock_poll_wait - place memory barrier behind the poll_wait call. * @filp: file * @wait_address: socket wait queue * @p: poll_table * * See the comments in the wq_has_sleeper function. */
static inline void sock_poll_wait(struct file *filp, wait_queue_head_t *wait_address, poll_table *p) { if (!poll_does_not_wait(p) && wait_address) { poll_wait(filp, wait_address, p); /* We need to be sure we are in sync with the * socket flags modification. * * This memory barrier is paired in the wq_has_sleeper. */ smp_mb(); } }

Contributors

PersonTokensPropCommitsCommitProp
Jiri Olsa4088.89%133.33%
Hans Verkuil48.89%133.33%
Eric Dumazet12.22%133.33%
Total45100.00%3100.00%


static inline void skb_set_hash_from_sk(struct sk_buff *skb, struct sock *sk) { if (sk->sk_txhash) { skb->l4_hash = 1; skb->hash = sk->sk_txhash; } }

Contributors

PersonTokensPropCommitsCommitProp
Tom Herbert39100.00%1100.00%
Total39100.00%1100.00%

void skb_set_owner_w(struct sk_buff *skb, struct sock *sk); /* * Queue a received datagram if it will fit. Stream and sequenced * protocols can't normally use this as they need to fit buffers in * and play with them. * * Inlined as it's very short and called for pretty much every * packet ever received. */
static inline void skb_set_owner_r(struct sk_buff *skb, struct sock *sk) { skb_orphan(skb); skb->sk = sk; skb->destructor = sock_rfree; atomic_add(skb->truesize, &sk->sk_rmem_alloc); sk_mem_charge(sk, skb->truesize); }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)4072.73%240.00%
Hideo Aoki916.36%120.00%
Herbert Xu59.09%120.00%
Arnaldo Carvalho de Melo11.82%120.00%
Total55100.00%5100.00%

void sk_reset_timer(struct sock *sk, struct timer_list *timer, unsigned long expires); void sk_stop_timer(struct sock *sk, struct timer_list *timer); int __sk_queue_drop_skb(struct sock *sk, struct sk_buff *skb, unsigned int flags, void (*destructor)(struct sock *sk, struct sk_buff *skb)); int __sock_queue_rcv_skb(struct sock *sk, struct sk_buff *skb); int sock_queue_rcv_skb(struct sock *sk, struct sk_buff *skb); int sock_queue_err_skb(struct sock *sk, struct sk_buff *skb); struct sk_buff *sock_dequeue_err_skb(struct sock *sk); /* * Recover an error report and clear atomically */
static inline int sock_error(struct sock *sk) { int err; if (likely(!sk->sk_err)) return 0; err = xchg(&sk->sk_err, 0); return -err; }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)2659.09%250.00%
Benjamin LaHaise1738.64%125.00%
Arnaldo Carvalho de Melo12.27%125.00%
Total44100.00%4100.00%


static inline unsigned long sock_wspace(struct sock *sk) { int amt = 0; if (!(sk->sk_shutdown & SEND_SHUTDOWN)) { amt = sk->sk_sndbuf - atomic_read(&sk->sk_wmem_alloc); if (amt < 0) amt = 0; } return amt; }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)5594.83%266.67%
Arnaldo Carvalho de Melo35.17%133.33%
Total58100.00%3100.00%

/* Note: * We use sk->sk_wq_raw, from contexts knowing this * pointer is not NULL and cannot disappear/change. */
static inline void sk_set_bit(int nr, struct sock *sk) { if ((nr == SOCKWQ_ASYNC_NOSPACE || nr == SOCKWQ_ASYNC_WAITDATA) && !sock_flag(sk, SOCK_FASYNC)) return; set_bit(nr, &sk->sk_wq_raw->flags); }

Contributors

PersonTokensPropCommitsCommitProp
Eric Dumazet48100.00%4100.00%
Total48100.00%4100.00%


static inline void sk_clear_bit(int nr, struct sock *sk) { if ((nr == SOCKWQ_ASYNC_NOSPACE || nr == SOCKWQ_ASYNC_WAITDATA) && !sock_flag(sk, SOCK_FASYNC)) return; clear_bit(nr, &sk->sk_wq_raw->flags); }

Contributors

PersonTokensPropCommitsCommitProp
Eric Dumazet48100.00%4100.00%
Total48100.00%4100.00%


static inline void sk_wake_async(const struct sock *sk, int how, int band) { if (sock_flag(sk, SOCK_FASYNC)) { rcu_read_lock(); sock_wake_async(rcu_dereference(sk->sk_wq), how, band); rcu_read_unlock(); } }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)3264.00%250.00%
Eric Dumazet1836.00%250.00%
Total50100.00%4100.00%

/* Since sk_{r,w}mem_alloc sums skb->truesize, even a small frame might * need sizeof(sk_buff) + MTU + padding, unless net driver perform copybreak. * Note: for send buffers, TCP works better if we can build two skbs at * minimum. */ #define TCP_SKB_MIN_TRUESIZE (2048 + SKB_DATA_ALIGN(sizeof(struct sk_buff))) #define SOCK_MIN_SNDBUF (TCP_SKB_MIN_TRUESIZE * 2) #define SOCK_MIN_RCVBUF TCP_SKB_MIN_TRUESIZE
static inline void sk_stream_moderate_sndbuf(struct sock *sk) { if (!(sk->sk_userlocks & SOCK_SNDBUF_LOCK)) { sk->sk_sndbuf = min(sk->sk_sndbuf, sk->sk_wmem_queued >> 1); sk->sk_sndbuf = max_t(u32, sk->sk_sndbuf, SOCK_MIN_SNDBUF); } }

Contributors

PersonTokensPropCommitsCommitProp
Arnaldo Carvalho de Melo5291.23%133.33%
Daniel Borkmann35.26%133.33%
Eric Dumazet23.51%133.33%
Total57100.00%3100.00%

struct sk_buff *sk_stream_alloc_skb(struct sock *sk, int size, gfp_t gfp, bool force_schedule); /** * sk_page_frag - return an appropriate page_frag * @sk: socket * * If socket allocation mode allows current thread to sleep, it means its * safe to use the per task page_frag instead of the per socket one. */
static inline struct page_frag *sk_page_frag(struct sock *sk) { if (gfpflags_allow_blocking(sk->sk_allocation)) return &current->task_frag; return &sk->sk_frag; }

Contributors

PersonTokensPropCommitsCommitProp
Arnaldo Carvalho de Melo1748.57%125.00%
Eric Dumazet1440.00%125.00%
Mel Gorman38.57%125.00%
Herbert Xu12.86%125.00%
Total35100.00%4100.00%

bool sk_page_frag_refill(struct sock *sk, struct page_frag *pfrag); /* * Default write policy as shown to user space via poll/select/SIGIO */
static inline bool sock_writeable(const struct sock *sk) { return atomic_read(&sk->sk_wmem_alloc) < (sk->sk_sndbuf >> 1); }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)1653.33%228.57%
David S. Miller826.67%114.29%
Eric Dumazet310.00%228.57%
Arnaldo Carvalho de Melo26.67%114.29%
Stephen Hemminger13.33%114.29%
Total30100.00%7100.00%


static inline gfp_t gfp_any(void) { return in_softirq() ? GFP_ATOMIC : GFP_KERNEL; }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)1588.24%250.00%
Al Viro15.88%125.00%
Andrew Morton15.88%125.00%
Total17100.00%4100.00%


static inline long sock_rcvtimeo(const struct sock *sk, bool noblock) { return noblock ? 0 : sk->sk_rcvtimeo; }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)2288.00%240.00%
Arnaldo Carvalho de Melo14.00%120.00%
Stephen Hemminger14.00%120.00%
Eric Dumazet14.00%120.00%
Total25100.00%5100.00%


static inline long sock_sndtimeo(const struct sock *sk, bool noblock) { return noblock ? 0 : sk->sk_sndtimeo; }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)2288.00%240.00%
Stephen Hemminger14.00%120.00%
Arnaldo Carvalho de Melo14.00%120.00%
Eric Dumazet14.00%120.00%
Total25100.00%5100.00%


static inline int sock_rcvlowat(const struct sock *sk, int waitall, int len) { return (waitall ? len : min_t(int, sk->sk_rcvlowat, len)) ? : 1; }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)3587.50%342.86%
Linus Torvalds37.50%228.57%
Stephen Hemminger12.50%114.29%
Arnaldo Carvalho de Melo12.50%114.29%
Total40100.00%7100.00%

/* Alas, with timeout socket operations are not restartable. * Compare this to poll(). */
static inline int sock_intr_errno(long timeo) { return timeo == MAX_SCHEDULE_TIMEOUT ? -ERESTARTSYS : -EINTR; }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)21100.00%2100.00%
Total21100.00%2100.00%

struct sock_skb_cb { u32 dropcount; }; /* Store sock_skb_cb at the end of skb->cb[] so protocol families * using skb->cb[] would keep using it directly and utilize its * alignement guarantee. */ #define SOCK_SKB_CB_OFFSET ((FIELD_SIZEOF(struct sk_buff, cb) - \ sizeof(struct sock_skb_cb))) #define SOCK_SKB_CB(__skb) ((struct sock_skb_cb *)((__skb)->cb + \ SOCK_SKB_CB_OFFSET)) #define sock_skb_cb_check_size(size) \ BUILD_BUG_ON((size) > SOCK_SKB_CB_OFFSET)
static inline void sock_skb_set_dropcount(const struct sock *sk, struct sk_buff *skb) { SOCK_SKB_CB(skb)->dropcount = sock_flag(sk, SOCK_RXQ_OVFL) ? atomic_read(&sk->sk_drops) : 0; }

Contributors

PersonTokensPropCommitsCommitProp
Eyal Birger3378.57%266.67%
Eric Dumazet921.43%133.33%
Total42100.00%3100.00%


static inline void sk_drops_add(struct sock *sk, const struct sk_buff *skb) { int segs = max_t(u16, 1, skb_shinfo(skb)->gso_segs); atomic_add(segs, &sk->sk_drops); }

Contributors

PersonTokensPropCommitsCommitProp
Eric Dumazet45100.00%1100.00%
Total45100.00%1100.00%

void __sock_recv_timestamp(struct msghdr *msg, struct sock *sk, struct sk_buff *skb); void __sock_recv_wifi_status(struct msghdr *msg, struct sock *sk, struct sk_buff *skb);
static inline void sock_recv_timestamp(struct msghdr *msg, struct sock *sk, struct sk_buff *skb) { ktime_t kt = skb->tstamp; struct skb_shared_hwtstamps *hwtstamps = skb_hwtstamps(skb); /* * generate control messages if * - receive time stamping in software requested * - software time stamp available and wanted * - hardware time stamps available and wanted */ if (sock_flag(sk, SOCK_RCVTSTAMP) || (sk->sk_tsflags & SOF_TIMESTAMPING_RX_SOFTWARE) || (kt && sk->sk_tsflags & SOF_TIMESTAMPING_SOFTWARE) || (hwtstamps->hwtstamp && (sk->sk_tsflags & SOF_TIMESTAMPING_RAW_HARDWARE))) __sock_recv_timestamp(msg, sk, skb); else sk->sk_stamp = kt; if (sock_flag(sk, SOCK_WIFI_STATUS) && skb->wifi_acked_valid) __sock_recv_wifi_status(msg, sk, skb); }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)3428.57%110.00%
Patrick Ohly2621.85%110.00%
Johannes Berg2218.49%110.00%
Willem de Bruijn1714.29%110.00%
Eric Dumazet119.24%330.00%
Thomas Graf54.20%110.00%
Andi Kleen32.52%110.00%
Arnaldo Carvalho de Melo10.84%110.00%
Total119100.00%10100.00%

void __sock_recv_ts_and_drops(struct msghdr *msg, struct sock *sk, struct sk_buff *skb); #define SK_DEFAULT_STAMP (-1L * NSEC_PER_SEC)
static inline void sock_recv_ts_and_drops(struct msghdr *msg, struct sock *sk, struct sk_buff *skb) { #define FLAGS_TS_OR_DROPS ((1UL << SOCK_RXQ_OVFL) | \ (1UL << SOCK_RCVTSTAMP)) #define TSFLAGS_ANY (SOF_TIMESTAMPING_SOFTWARE | \ SOF_TIMESTAMPING_RAW_HARDWARE) if (sk->sk_flags & FLAGS_TS_OR_DROPS || sk->sk_tsflags & TSFLAGS_ANY) __sock_recv_ts_and_drops(msg, sk, skb); else if (unlikely(sock_flag(sk, SOCK_TIMESTAMP))) sk->sk_stamp = skb->tstamp; else if (unlikely(sk->sk_stamp == SK_DEFAULT_STAMP)) sk->sk_stamp = 0; }

Contributors

PersonTokensPropCommitsCommitProp
Eric Dumazet5458.70%250.00%
Paolo Abeni2729.35%125.00%
Willem de Bruijn1111.96%125.00%
Total92100.00%4100.00%

void __sock_tx_timestamp(__u16 tsflags, __u8 *tx_flags); /** * sock_tx_timestamp - checks whether the outgoing packet is to be time stamped * @sk: socket sending this packet * @tsflags: timestamping flags to use * @tx_flags: completed with instructions for time stamping * * Note : callers should take care of initial *tx_flags value (usually 0) */
static inline void sock_tx_timestamp(const struct sock *sk, __u16 tsflags, __u8 *tx_flags) { if (unlikely(tsflags)) __sock_tx_timestamp(tsflags, tx_flags); if (unlikely(sock_flag(sk, SOCK_WIFI_STATUS))) *tx_flags |= SKBTX_WIFI_STATUS; }

Contributors

PersonTokensPropCommitsCommitProp
Willem de Bruijn3364.71%116.67%
Patrick Ohly917.65%116.67%
Soheil Hassas Yeganeh59.80%116.67%
Oliver Hartkopp23.92%116.67%
Daniel Borkmann11.96%116.67%
Eric Dumazet11.96%116.67%
Total51100.00%6100.00%

/** * sk_eat_skb - Release a skb if it is no longer needed * @sk: socket to eat this skb from * @skb: socket buffer to eat * * This routine must be called with interrupts disabled or with the socket * locked so that the sk_buff queue operation is ok. */
static inline void sk_eat_skb(struct sock *sk, struct sk_buff *skb) { __skb_unlink(skb, &sk->sk_receive_queue); __kfree_skb(skb); }

Contributors

PersonTokensPropCommitsCommitProp
Arnaldo Carvalho de Melo32100.00%1100.00%
Total32100.00%1100.00%


static inline struct net *sock_net(const struct sock *sk) { return read_pnet(&sk->sk_net); }

Contributors

PersonTokensPropCommitsCommitProp
Hideaki Yoshifuji / 吉藤英明2083.33%150.00%
Eric Dumazet416.67%150.00%
Total24100.00%2100.00%


static inline void sock_net_set(struct sock *sk, struct net *net) { write_pnet(&sk->sk_net, net); }

Contributors

PersonTokensPropCommitsCommitProp
Hideaki Yoshifuji / 吉藤英明2281.48%150.00%
Eric Dumazet518.52%150.00%
Total27100.00%2100.00%


static inline struct sock *skb_steal_sock(struct sk_buff *skb) { if (skb->sk) { struct sock *sk = skb->sk; skb->destructor = NULL; skb->sk = NULL; return sk; } return NULL; }

Contributors

PersonTokensPropCommitsCommitProp
KOVACS Krisztian49100.00%1100.00%
Total49100.00%1100.00%

/* This helper checks if a socket is a full socket, * ie _not_ a timewait or request socket. */
static inline bool sk_fullsock(const struct sock *sk) { return (1 << sk->sk_state) & ~(TCPF_TIME_WAIT | TCPF_NEW_SYN_RECV); }

Contributors

PersonTokensPropCommitsCommitProp
Eric Dumazet29100.00%1100.00%
Total29100.00%1100.00%

/* This helper checks if a socket is a LISTEN or NEW_SYN_RECV * SYNACK messages can be attached to either ones (depending on SYNCOOKIE) */
static inline bool sk_listener(const struct sock *sk) { return (1 << sk->sk_state) & (TCPF_LISTEN | TCPF_NEW_SYN_RECV); }

Contributors

PersonTokensPropCommitsCommitProp
Eric Dumazet28100.00%1100.00%
Total28100.00%1100.00%

/** * sk_state_load - read sk->sk_state for lockless contexts * @sk: socket pointer * * Paired with sk_state_store(). Used in places we do not hold socket lock : * tcp_diag_get_info(), tcp_get_info(), tcp_poll(), get_tcp4_sock() ... */
static inline int sk_state_load(const struct sock *sk) { return smp_load_acquire(&sk->sk_state); }

Contributors

PersonTokensPropCommitsCommitProp
Eric Dumazet22100.00%1100.00%
Total22100.00%1100.00%

/** * sk_state_store - update sk->sk_state * @sk: socket pointer * @newstate: new state * * Paired with sk_state_load(). Should be used in contexts where * state change might impact lockless readers. */
static inline void sk_state_store(struct sock *sk, int newstate) { smp_store_release(&sk->sk_state, newstate); }

Contributors

PersonTokensPropCommitsCommitProp
Eric Dumazet25100.00%1100.00%
Total25100.00%1100.00%

void sock_enable_timestamp(struct sock *sk, int flag); int sock_get_timestamp(struct sock *, struct timeval __user *); int sock_get_timestampns(struct sock *, struct timespec __user *); int sock_recv_errqueue(struct sock *sk, struct msghdr *msg, int len, int level, int type); bool sk_ns_capable(const struct sock *sk, struct user_namespace *user_ns, int cap); bool sk_capable(const struct sock *sk, int cap); bool sk_net_capable(const struct sock *sk, int cap); void sk_get_meminfo(const struct sock *sk, u32 *meminfo); extern __u32 sysctl_wmem_max; extern __u32 sysctl_rmem_max; extern int sysctl_tstamp_allow_data; extern int sysctl_optmem_max; extern __u32 sysctl_wmem_default; extern __u32 sysctl_rmem_default; #endif /* _SOCK_H */

Overall Contributors

PersonTokensPropCommitsCommitProp
Eric Dumazet214823.45%10425.18%
Linus Torvalds (pre-git)158817.33%5513.32%
Arnaldo Carvalho de Melo141815.48%419.93%
Tom Herbert4785.22%112.66%
Glauber de Oliveira Costa3453.77%40.97%
Hideo Aoki2142.34%10.24%
Willem de Bruijn2072.26%81.94%
David S. Miller1842.01%102.42%
Hannes Frederic Sowa1601.75%61.45%
Pavel Emelyanov1341.46%102.42%
Mel Gorman1301.42%61.45%
Stephen Hemminger1261.38%51.21%
Eric W. Biedermann1251.36%102.42%
Julian Anastasov1171.28%20.48%
Dmitry Mishin1021.11%10.24%
Herbert Xu900.98%71.69%
Paolo Abeni790.86%20.48%
Krishna Kumar760.83%10.24%
Craig Gallek750.82%51.21%
Christoph Hellwig690.75%10.24%
Daniel Borkmann680.74%40.97%
Lorenzo Colitti640.70%20.48%
Peter Zijlstra630.69%30.73%
Eyal Birger610.67%30.73%
Jiri Olsa560.61%10.24%
KOVACS Krisztian490.53%10.24%
Yi Zhu470.51%20.48%
David Ahern460.50%10.24%
Johannes Berg440.48%10.24%
Hideaki Yoshifuji / 吉藤英明420.46%10.24%
Patrick Ohly410.45%10.24%
Al Viro390.43%61.45%
Andrew Morton360.39%30.73%
Thomas Graf340.37%71.69%
Linus Torvalds340.37%71.69%
Alexey Kuznetsov330.36%20.48%
Andi Kleen270.29%20.48%
Edward Hyunkoo Jee270.29%10.24%
Ursula Braun260.28%20.48%
samanthakumar260.28%20.48%
Li Zefan260.28%10.24%
Ralf Bächle250.27%10.24%
Johannes Weiner250.27%40.97%
Richard Cochran230.25%10.24%
Pravin B Shelar230.25%10.24%
Ingo Molnar220.24%30.73%
Neil Horman190.21%10.24%
Alexander Duyck190.21%20.48%
Wei Yongjun170.19%10.24%
Benjamin LaHaise170.19%10.24%
Alexey Dobriyan160.17%40.97%
Harvey Harrison150.16%10.24%
Joshua Hunt140.15%10.24%
James Morris140.15%30.73%
David Held120.13%10.24%
David Howells110.12%10.24%
Soheil Hassas Yeganeh110.12%20.48%
Eliezer Tamir100.11%20.48%
Tejun Heo90.10%20.48%
Venkat Yekkirala70.08%10.24%
Sabrina Dubroca60.07%10.24%
Denys Vlasenko60.07%20.48%
Américo Wang50.05%30.73%
Zhi Yong Wu50.05%10.24%
Shirley Ma50.05%10.24%
Andrey Ryabinin50.05%10.24%
Sasha Levin50.05%10.24%
Akinobu Mita40.04%10.24%
Hans Verkuil40.04%10.24%
Joe Perches40.04%10.24%
Marcelo Ricardo Leitner40.04%10.24%
Randy Dunlap40.04%10.24%
Ben Greear30.03%10.24%
Ben Hutchings30.03%10.24%
Paul Gortmaker30.03%10.24%
Denis V. Lunev30.03%10.24%
Ilpo Järvinen30.03%10.24%
Vincent Bernat30.03%10.24%
Changli Gao30.03%10.24%
Jacob E Keller30.03%10.24%
John Heffner20.02%10.24%
Christoph Lameter20.02%10.24%
Oliver Hartkopp20.02%10.24%
Brian Haley10.01%10.24%
Zhaowei Yuan10.01%10.24%
Dan J Williams10.01%10.24%
Paul E. McKenney10.01%10.24%
Ying Xue10.01%10.24%
Christopher Leech10.01%10.24%
Christoph Paasch10.01%10.24%
Jesper Juhl10.01%10.24%
Michał Mirosław10.01%10.24%
Geliang Tang10.01%10.24%
Zhao, Gang10.01%10.24%
Total9161100.00%413100.00%
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