Lines Matching refs:sk
81 #define SOCK_DEBUG(sk, msg...) do { if ((sk) && sock_flag((sk), SOCK_DBG)) \ argument
86 void SOCK_DEBUG(const struct sock *sk, const char *msg, ...) in SOCK_DEBUG() argument
497 void (*sk_state_change)(struct sock *sk);
498 void (*sk_data_ready)(struct sock *sk);
499 void (*sk_write_space)(struct sock *sk);
500 void (*sk_error_report)(struct sock *sk);
501 int (*sk_backlog_rcv)(struct sock *sk,
504 struct sk_buff* (*sk_validate_xmit_skb)(struct sock *sk,
508 void (*sk_destruct)(struct sock *sk);
522 #define __sk_user_data(sk) ((*((void __rcu **)&(sk)->sk_user_data))) argument
524 #define rcu_dereference_sk_user_data(sk) rcu_dereference(__sk_user_data((sk))) argument
525 #define rcu_assign_sk_user_data(sk, ptr) rcu_assign_pointer(__sk_user_data((sk)), ptr) argument
538 int sk_set_peek_off(struct sock *sk, int val);
540 static inline int sk_peek_offset(struct sock *sk, int flags) in sk_peek_offset() argument
543 return READ_ONCE(sk->sk_peek_off); in sk_peek_offset()
549 static inline void sk_peek_offset_bwd(struct sock *sk, int val) in sk_peek_offset_bwd() argument
551 s32 off = READ_ONCE(sk->sk_peek_off); in sk_peek_offset_bwd()
555 WRITE_ONCE(sk->sk_peek_off, off); in sk_peek_offset_bwd()
559 static inline void sk_peek_offset_fwd(struct sock *sk, int val) in sk_peek_offset_fwd() argument
561 sk_peek_offset_bwd(sk, -val); in sk_peek_offset_fwd()
592 static inline struct sock *sk_next(const struct sock *sk) in sk_next() argument
594 return hlist_entry_safe(sk->sk_node.next, struct sock, sk_node); in sk_next()
597 static inline struct sock *sk_nulls_next(const struct sock *sk) in sk_nulls_next() argument
599 return (!is_a_nulls(sk->sk_nulls_node.next)) ? in sk_nulls_next()
600 hlist_nulls_entry(sk->sk_nulls_node.next, in sk_nulls_next()
605 static inline bool sk_unhashed(const struct sock *sk) in sk_unhashed() argument
607 return hlist_unhashed(&sk->sk_node); in sk_unhashed()
610 static inline bool sk_hashed(const struct sock *sk) in sk_hashed() argument
612 return !sk_unhashed(sk); in sk_hashed()
625 static inline void __sk_del_node(struct sock *sk) in __sk_del_node() argument
627 __hlist_del(&sk->sk_node); in __sk_del_node()
631 static inline bool __sk_del_node_init(struct sock *sk) in __sk_del_node_init() argument
633 if (sk_hashed(sk)) { in __sk_del_node_init()
634 __sk_del_node(sk); in __sk_del_node_init()
635 sk_node_init(&sk->sk_node); in __sk_del_node_init()
647 static __always_inline void sock_hold(struct sock *sk) in sock_hold() argument
649 refcount_inc(&sk->sk_refcnt); in sock_hold()
655 static __always_inline void __sock_put(struct sock *sk) in __sock_put() argument
657 refcount_dec(&sk->sk_refcnt); in __sock_put()
660 static inline bool sk_del_node_init(struct sock *sk) in sk_del_node_init() argument
662 bool rc = __sk_del_node_init(sk); in sk_del_node_init()
666 WARN_ON(refcount_read(&sk->sk_refcnt) == 1); in sk_del_node_init()
667 __sock_put(sk); in sk_del_node_init()
671 #define sk_del_node_init_rcu(sk) sk_del_node_init(sk) argument
673 static inline bool __sk_nulls_del_node_init_rcu(struct sock *sk) in __sk_nulls_del_node_init_rcu() argument
675 if (sk_hashed(sk)) { in __sk_nulls_del_node_init_rcu()
676 hlist_nulls_del_init_rcu(&sk->sk_nulls_node); in __sk_nulls_del_node_init_rcu()
682 static inline bool sk_nulls_del_node_init_rcu(struct sock *sk) in sk_nulls_del_node_init_rcu() argument
684 bool rc = __sk_nulls_del_node_init_rcu(sk); in sk_nulls_del_node_init_rcu()
688 WARN_ON(refcount_read(&sk->sk_refcnt) == 1); in sk_nulls_del_node_init_rcu()
689 __sock_put(sk); in sk_nulls_del_node_init_rcu()
694 static inline void __sk_add_node(struct sock *sk, struct hlist_head *list) in __sk_add_node() argument
696 hlist_add_head(&sk->sk_node, list); in __sk_add_node()
699 static inline void sk_add_node(struct sock *sk, struct hlist_head *list) in sk_add_node() argument
701 sock_hold(sk); in sk_add_node()
702 __sk_add_node(sk, list); in sk_add_node()
705 static inline void sk_add_node_rcu(struct sock *sk, struct hlist_head *list) in sk_add_node_rcu() argument
707 sock_hold(sk); in sk_add_node_rcu()
708 if (IS_ENABLED(CONFIG_IPV6) && sk->sk_reuseport && in sk_add_node_rcu()
709 sk->sk_family == AF_INET6) in sk_add_node_rcu()
710 hlist_add_tail_rcu(&sk->sk_node, list); in sk_add_node_rcu()
712 hlist_add_head_rcu(&sk->sk_node, list); in sk_add_node_rcu()
715 static inline void sk_add_node_tail_rcu(struct sock *sk, struct hlist_head *list) in sk_add_node_tail_rcu() argument
717 sock_hold(sk); in sk_add_node_tail_rcu()
718 hlist_add_tail_rcu(&sk->sk_node, list); in sk_add_node_tail_rcu()
721 static inline void __sk_nulls_add_node_rcu(struct sock *sk, struct hlist_nulls_head *list) in __sk_nulls_add_node_rcu() argument
723 hlist_nulls_add_head_rcu(&sk->sk_nulls_node, list); in __sk_nulls_add_node_rcu()
726 static inline void sk_nulls_add_node_rcu(struct sock *sk, struct hlist_nulls_head *list) in sk_nulls_add_node_rcu() argument
728 sock_hold(sk); in sk_nulls_add_node_rcu()
729 __sk_nulls_add_node_rcu(sk, list); in sk_nulls_add_node_rcu()
732 static inline void __sk_del_bind_node(struct sock *sk) in __sk_del_bind_node() argument
734 __hlist_del(&sk->sk_bind_node); in __sk_del_bind_node()
737 static inline void sk_add_bind_node(struct sock *sk, in sk_add_bind_node() argument
740 hlist_add_head(&sk->sk_bind_node, list); in sk_add_bind_node()
775 static inline struct user_namespace *sk_user_ns(struct sock *sk) in sk_user_ns() argument
781 return sk->sk_socket->file->f_cred->user_ns; in sk_user_ns()
826 static inline void sock_set_flag(struct sock *sk, enum sock_flags flag) in sock_set_flag() argument
828 __set_bit(flag, &sk->sk_flags); in sock_set_flag()
831 static inline void sock_reset_flag(struct sock *sk, enum sock_flags flag) in sock_reset_flag() argument
833 __clear_bit(flag, &sk->sk_flags); in sock_reset_flag()
836 static inline bool sock_flag(const struct sock *sk, enum sock_flags flag) in sock_flag() argument
838 return test_bit(flag, &sk->sk_flags); in sock_flag()
856 static inline gfp_t sk_gfp_mask(const struct sock *sk, gfp_t gfp_mask) in sk_gfp_mask() argument
858 return gfp_mask | (sk->sk_allocation & __GFP_MEMALLOC); in sk_gfp_mask()
861 static inline void sk_acceptq_removed(struct sock *sk) in sk_acceptq_removed() argument
863 sk->sk_ack_backlog--; in sk_acceptq_removed()
866 static inline void sk_acceptq_added(struct sock *sk) in sk_acceptq_added() argument
868 sk->sk_ack_backlog++; in sk_acceptq_added()
871 static inline bool sk_acceptq_is_full(const struct sock *sk) in sk_acceptq_is_full() argument
873 return sk->sk_ack_backlog > sk->sk_max_ack_backlog; in sk_acceptq_is_full()
879 static inline int sk_stream_min_wspace(const struct sock *sk) in sk_stream_min_wspace() argument
881 return READ_ONCE(sk->sk_wmem_queued) >> 1; in sk_stream_min_wspace()
884 static inline int sk_stream_wspace(const struct sock *sk) in sk_stream_wspace() argument
886 return READ_ONCE(sk->sk_sndbuf) - READ_ONCE(sk->sk_wmem_queued); in sk_stream_wspace()
889 static inline void sk_wmem_queued_add(struct sock *sk, int val) in sk_wmem_queued_add() argument
891 WRITE_ONCE(sk->sk_wmem_queued, sk->sk_wmem_queued + val); in sk_wmem_queued_add()
894 void sk_stream_write_space(struct sock *sk);
897 static inline void __sk_add_backlog(struct sock *sk, struct sk_buff *skb) in __sk_add_backlog() argument
902 if (!sk->sk_backlog.tail) in __sk_add_backlog()
903 sk->sk_backlog.head = skb; in __sk_add_backlog()
905 sk->sk_backlog.tail->next = skb; in __sk_add_backlog()
907 sk->sk_backlog.tail = skb; in __sk_add_backlog()
916 static inline bool sk_rcvqueues_full(const struct sock *sk, unsigned int limit) in sk_rcvqueues_full() argument
918 unsigned int qsize = sk->sk_backlog.len + atomic_read(&sk->sk_rmem_alloc); in sk_rcvqueues_full()
924 static inline __must_check int sk_add_backlog(struct sock *sk, struct sk_buff *skb, in sk_add_backlog() argument
927 if (sk_rcvqueues_full(sk, limit)) in sk_add_backlog()
935 if (skb_pfmemalloc(skb) && !sock_flag(sk, SOCK_MEMALLOC)) in sk_add_backlog()
938 __sk_add_backlog(sk, skb); in sk_add_backlog()
939 sk->sk_backlog.len += skb->truesize; in sk_add_backlog()
943 int __sk_backlog_rcv(struct sock *sk, struct sk_buff *skb);
945 static inline int sk_backlog_rcv(struct sock *sk, struct sk_buff *skb) in sk_backlog_rcv() argument
948 return __sk_backlog_rcv(sk, skb); in sk_backlog_rcv()
950 return sk->sk_backlog_rcv(sk, skb); in sk_backlog_rcv()
953 static inline void sk_incoming_cpu_update(struct sock *sk) in sk_incoming_cpu_update() argument
957 if (unlikely(READ_ONCE(sk->sk_incoming_cpu) != cpu)) in sk_incoming_cpu_update()
958 WRITE_ONCE(sk->sk_incoming_cpu, cpu); in sk_incoming_cpu_update()
973 static inline void sock_rps_record_flow(const struct sock *sk) in sock_rps_record_flow() argument
987 if (sk->sk_state == TCP_ESTABLISHED) in sock_rps_record_flow()
988 sock_rps_record_flow_hash(sk->sk_rxhash); in sock_rps_record_flow()
993 static inline void sock_rps_save_rxhash(struct sock *sk, in sock_rps_save_rxhash() argument
997 if (unlikely(sk->sk_rxhash != skb->hash)) in sock_rps_save_rxhash()
998 sk->sk_rxhash = skb->hash; in sock_rps_save_rxhash()
1002 static inline void sock_rps_reset_rxhash(struct sock *sk) in sock_rps_reset_rxhash() argument
1005 sk->sk_rxhash = 0; in sock_rps_reset_rxhash()
1024 int sk_stream_wait_connect(struct sock *sk, long *timeo_p);
1025 int sk_stream_wait_memory(struct sock *sk, long *timeo_p);
1026 void sk_stream_wait_close(struct sock *sk, long timeo_p);
1027 int sk_stream_error(struct sock *sk, int flags, int err);
1028 void sk_stream_kill_queues(struct sock *sk);
1029 void sk_set_memalloc(struct sock *sk);
1030 void sk_clear_memalloc(struct sock *sk);
1032 void __sk_flush_backlog(struct sock *sk);
1034 static inline bool sk_flush_backlog(struct sock *sk) in sk_flush_backlog() argument
1036 if (unlikely(READ_ONCE(sk->sk_backlog.tail))) { in sk_flush_backlog()
1037 __sk_flush_backlog(sk); in sk_flush_backlog()
1043 int sk_wait_data(struct sock *sk, long *timeo, const struct sk_buff *skb);
1056 static inline void sk_prot_clear_nulls(struct sock *sk, int size) in sk_prot_clear_nulls() argument
1059 memset(sk, 0, offsetof(struct sock, sk_node.next)); in sk_prot_clear_nulls()
1060 memset(&sk->sk_node.pprev, 0, in sk_prot_clear_nulls()
1068 void (*close)(struct sock *sk,
1070 int (*pre_connect)(struct sock *sk,
1073 int (*connect)(struct sock *sk,
1076 int (*disconnect)(struct sock *sk, int flags);
1078 struct sock * (*accept)(struct sock *sk, int flags, int *err,
1081 int (*ioctl)(struct sock *sk, int cmd,
1083 int (*init)(struct sock *sk);
1084 void (*destroy)(struct sock *sk);
1085 void (*shutdown)(struct sock *sk, int how);
1086 int (*setsockopt)(struct sock *sk, int level,
1089 int (*getsockopt)(struct sock *sk, int level,
1092 void (*keepalive)(struct sock *sk, int valbool);
1094 int (*compat_setsockopt)(struct sock *sk,
1098 int (*compat_getsockopt)(struct sock *sk,
1102 int (*compat_ioctl)(struct sock *sk,
1105 int (*sendmsg)(struct sock *sk, struct msghdr *msg,
1107 int (*recvmsg)(struct sock *sk, struct msghdr *msg,
1110 int (*sendpage)(struct sock *sk, struct page *page,
1112 int (*bind)(struct sock *sk,
1115 int (*backlog_rcv) (struct sock *sk,
1118 void (*release_cb)(struct sock *sk);
1121 int (*hash)(struct sock *sk);
1122 void (*unhash)(struct sock *sk);
1123 void (*rehash)(struct sock *sk);
1124 int (*get_port)(struct sock *sk, unsigned short snum);
1131 bool (*stream_memory_free)(const struct sock *sk, int wake);
1132 bool (*stream_memory_read)(const struct sock *sk);
1134 void (*enter_memory_pressure)(struct sock *sk);
1135 void (*leave_memory_pressure)(struct sock *sk);
1181 int (*diag_destroy)(struct sock *sk, int err);
1189 static inline void sk_refcnt_debug_inc(struct sock *sk) in sk_refcnt_debug_inc() argument
1191 atomic_inc(&sk->sk_prot->socks); in sk_refcnt_debug_inc()
1194 static inline void sk_refcnt_debug_dec(struct sock *sk) in sk_refcnt_debug_dec() argument
1196 atomic_dec(&sk->sk_prot->socks); in sk_refcnt_debug_dec()
1198 sk->sk_prot->name, sk, atomic_read(&sk->sk_prot->socks)); in sk_refcnt_debug_dec()
1201 static inline void sk_refcnt_debug_release(const struct sock *sk) in sk_refcnt_debug_release() argument
1203 if (refcount_read(&sk->sk_refcnt) != 1) in sk_refcnt_debug_release()
1205 sk->sk_prot->name, sk, refcount_read(&sk->sk_refcnt)); in sk_refcnt_debug_release()
1208 #define sk_refcnt_debug_inc(sk) do { } while (0) argument
1209 #define sk_refcnt_debug_dec(sk) do { } while (0) argument
1210 #define sk_refcnt_debug_release(sk) do { } while (0) argument
1213 static inline bool __sk_stream_memory_free(const struct sock *sk, int wake) in __sk_stream_memory_free() argument
1215 if (READ_ONCE(sk->sk_wmem_queued) >= READ_ONCE(sk->sk_sndbuf)) in __sk_stream_memory_free()
1218 return sk->sk_prot->stream_memory_free ? in __sk_stream_memory_free()
1219 sk->sk_prot->stream_memory_free(sk, wake) : true; in __sk_stream_memory_free()
1222 static inline bool sk_stream_memory_free(const struct sock *sk) in sk_stream_memory_free() argument
1224 return __sk_stream_memory_free(sk, 0); in sk_stream_memory_free()
1227 static inline bool __sk_stream_is_writeable(const struct sock *sk, int wake) in __sk_stream_is_writeable() argument
1229 return sk_stream_wspace(sk) >= sk_stream_min_wspace(sk) && in __sk_stream_is_writeable()
1230 __sk_stream_memory_free(sk, wake); in __sk_stream_is_writeable()
1233 static inline bool sk_stream_is_writeable(const struct sock *sk) in sk_stream_is_writeable() argument
1235 return __sk_stream_is_writeable(sk, 0); in sk_stream_is_writeable()
1238 static inline int sk_under_cgroup_hierarchy(struct sock *sk, in sk_under_cgroup_hierarchy() argument
1242 return cgroup_is_descendant(sock_cgroup_ptr(&sk->sk_cgrp_data), in sk_under_cgroup_hierarchy()
1249 static inline bool sk_has_memory_pressure(const struct sock *sk) in sk_has_memory_pressure() argument
1251 return sk->sk_prot->memory_pressure != NULL; in sk_has_memory_pressure()
1254 static inline bool sk_under_memory_pressure(const struct sock *sk) in sk_under_memory_pressure() argument
1256 if (!sk->sk_prot->memory_pressure) in sk_under_memory_pressure()
1259 if (mem_cgroup_sockets_enabled && sk->sk_memcg && in sk_under_memory_pressure()
1260 mem_cgroup_under_socket_pressure(sk->sk_memcg)) in sk_under_memory_pressure()
1263 return !!*sk->sk_prot->memory_pressure; in sk_under_memory_pressure()
1267 sk_memory_allocated(const struct sock *sk) in sk_memory_allocated() argument
1269 return atomic_long_read(sk->sk_prot->memory_allocated); in sk_memory_allocated()
1273 sk_memory_allocated_add(struct sock *sk, int amt) in sk_memory_allocated_add() argument
1275 return atomic_long_add_return(amt, sk->sk_prot->memory_allocated); in sk_memory_allocated_add()
1279 sk_memory_allocated_sub(struct sock *sk, int amt) in sk_memory_allocated_sub() argument
1281 atomic_long_sub(amt, sk->sk_prot->memory_allocated); in sk_memory_allocated_sub()
1284 static inline void sk_sockets_allocated_dec(struct sock *sk) in sk_sockets_allocated_dec() argument
1286 percpu_counter_dec(sk->sk_prot->sockets_allocated); in sk_sockets_allocated_dec()
1289 static inline void sk_sockets_allocated_inc(struct sock *sk) in sk_sockets_allocated_inc() argument
1291 percpu_counter_inc(sk->sk_prot->sockets_allocated); in sk_sockets_allocated_inc()
1295 sk_sockets_allocated_read_positive(struct sock *sk) in sk_sockets_allocated_read_positive() argument
1297 return percpu_counter_read_positive(sk->sk_prot->sockets_allocated); in sk_sockets_allocated_read_positive()
1337 static inline int __sk_prot_rehash(struct sock *sk) in __sk_prot_rehash() argument
1339 sk->sk_prot->unhash(sk); in __sk_prot_rehash()
1340 return sk->sk_prot->hash(sk); in __sk_prot_rehash()
1376 int __sk_mem_raise_allocated(struct sock *sk, int size, int amt, int kind);
1377 int __sk_mem_schedule(struct sock *sk, int size, int kind);
1378 void __sk_mem_reduce_allocated(struct sock *sk, int amount);
1379 void __sk_mem_reclaim(struct sock *sk, int amount);
1390 static inline long sk_prot_mem_limits(const struct sock *sk, int index) in sk_prot_mem_limits() argument
1392 long val = sk->sk_prot->sysctl_mem[index]; in sk_prot_mem_limits()
1407 static inline bool sk_has_account(struct sock *sk) in sk_has_account() argument
1410 return !!sk->sk_prot->memory_allocated; in sk_has_account()
1413 static inline bool sk_wmem_schedule(struct sock *sk, int size) in sk_wmem_schedule() argument
1415 if (!sk_has_account(sk)) in sk_wmem_schedule()
1417 return size <= sk->sk_forward_alloc || in sk_wmem_schedule()
1418 __sk_mem_schedule(sk, size, SK_MEM_SEND); in sk_wmem_schedule()
1422 sk_rmem_schedule(struct sock *sk, struct sk_buff *skb, int size) in sk_rmem_schedule() argument
1424 if (!sk_has_account(sk)) in sk_rmem_schedule()
1426 return size<= sk->sk_forward_alloc || in sk_rmem_schedule()
1427 __sk_mem_schedule(sk, size, SK_MEM_RECV) || in sk_rmem_schedule()
1431 static inline void sk_mem_reclaim(struct sock *sk) in sk_mem_reclaim() argument
1433 if (!sk_has_account(sk)) in sk_mem_reclaim()
1435 if (sk->sk_forward_alloc >= SK_MEM_QUANTUM) in sk_mem_reclaim()
1436 __sk_mem_reclaim(sk, sk->sk_forward_alloc); in sk_mem_reclaim()
1439 static inline void sk_mem_reclaim_partial(struct sock *sk) in sk_mem_reclaim_partial() argument
1441 if (!sk_has_account(sk)) in sk_mem_reclaim_partial()
1443 if (sk->sk_forward_alloc > SK_MEM_QUANTUM) in sk_mem_reclaim_partial()
1444 __sk_mem_reclaim(sk, sk->sk_forward_alloc - 1); in sk_mem_reclaim_partial()
1447 static inline void sk_mem_charge(struct sock *sk, int size) in sk_mem_charge() argument
1449 if (!sk_has_account(sk)) in sk_mem_charge()
1451 sk->sk_forward_alloc -= size; in sk_mem_charge()
1454 static inline void sk_mem_uncharge(struct sock *sk, int size) in sk_mem_uncharge() argument
1456 if (!sk_has_account(sk)) in sk_mem_uncharge()
1458 sk->sk_forward_alloc += size; in sk_mem_uncharge()
1467 if (unlikely(sk->sk_forward_alloc >= 1 << 21)) in sk_mem_uncharge()
1468 __sk_mem_reclaim(sk, 1 << 20); in sk_mem_uncharge()
1472 static inline void sk_wmem_free_skb(struct sock *sk, struct sk_buff *skb) in sk_wmem_free_skb() argument
1474 sock_set_flag(sk, SOCK_QUEUE_SHRUNK); in sk_wmem_free_skb()
1475 sk_wmem_queued_add(sk, -skb->truesize); in sk_wmem_free_skb()
1476 sk_mem_uncharge(sk, skb->truesize); in sk_wmem_free_skb()
1478 !sk->sk_tx_skb_cache && !skb_cloned(skb)) { in sk_wmem_free_skb()
1480 sk->sk_tx_skb_cache = skb; in sk_wmem_free_skb()
1486 static inline void sock_release_ownership(struct sock *sk) in sock_release_ownership() argument
1488 if (sk->sk_lock.owned) { in sock_release_ownership()
1489 sk->sk_lock.owned = 0; in sock_release_ownership()
1492 mutex_release(&sk->sk_lock.dep_map, 1, _RET_IP_); in sock_release_ownership()
1503 #define sock_lock_init_class_and_name(sk, sname, skey, name, key) \ argument
1505 sk->sk_lock.owned = 0; \
1506 init_waitqueue_head(&sk->sk_lock.wq); \
1507 spin_lock_init(&(sk)->sk_lock.slock); \
1508 debug_check_no_locks_freed((void *)&(sk)->sk_lock, \
1509 sizeof((sk)->sk_lock)); \
1510 lockdep_set_class_and_name(&(sk)->sk_lock.slock, \
1512 lockdep_init_map(&(sk)->sk_lock.dep_map, (name), (key), 0); \
1516 static inline bool lockdep_sock_is_held(const struct sock *sk) in lockdep_sock_is_held() argument
1518 return lockdep_is_held(&sk->sk_lock) || in lockdep_sock_is_held()
1519 lockdep_is_held(&sk->sk_lock.slock); in lockdep_sock_is_held()
1523 void lock_sock_nested(struct sock *sk, int subclass);
1525 static inline void lock_sock(struct sock *sk) in lock_sock() argument
1527 lock_sock_nested(sk, 0); in lock_sock()
1530 void __release_sock(struct sock *sk);
1531 void release_sock(struct sock *sk);
1540 bool lock_sock_fast(struct sock *sk);
1549 static inline void unlock_sock_fast(struct sock *sk, bool slow) in unlock_sock_fast() argument
1552 release_sock(sk); in unlock_sock_fast()
1554 spin_unlock_bh(&sk->sk_lock.slock); in unlock_sock_fast()
1571 static inline void sock_owned_by_me(const struct sock *sk) in sock_owned_by_me() argument
1574 WARN_ON_ONCE(!lockdep_sock_is_held(sk) && debug_locks); in sock_owned_by_me()
1578 static inline bool sock_owned_by_user(const struct sock *sk) in sock_owned_by_user() argument
1580 sock_owned_by_me(sk); in sock_owned_by_user()
1581 return sk->sk_lock.owned; in sock_owned_by_user()
1584 static inline bool sock_owned_by_user_nocheck(const struct sock *sk) in sock_owned_by_user_nocheck() argument
1586 return sk->sk_lock.owned; in sock_owned_by_user_nocheck()
1592 struct sock *sk = (struct sock *)csk; in sock_allow_reclassification() local
1594 return !sk->sk_lock.owned && !spin_is_locked(&sk->sk_lock.slock); in sock_allow_reclassification()
1599 void sk_free(struct sock *sk);
1600 void sk_destruct(struct sock *sk);
1601 struct sock *sk_clone_lock(const struct sock *sk, const gfp_t priority);
1602 void sk_free_unlock_clone(struct sock *sk);
1604 struct sk_buff *sock_wmalloc(struct sock *sk, unsigned long size, int force,
1608 struct sk_buff *sock_omalloc(struct sock *sk, unsigned long size,
1626 struct sk_buff *sock_alloc_send_skb(struct sock *sk, unsigned long size,
1628 struct sk_buff *sock_alloc_send_pskb(struct sock *sk, unsigned long header_len,
1631 void *sock_kmalloc(struct sock *sk, int size, gfp_t priority);
1632 void sock_kfree_s(struct sock *sk, void *mem, int size);
1633 void sock_kzfree_s(struct sock *sk, void *mem, int size);
1634 void sk_send_sigurg(struct sock *sk);
1643 const struct sock *sk) in sockcm_init() argument
1645 *sockc = (struct sockcm_cookie) { .tsflags = sk->sk_tsflags }; in sockcm_init()
1648 int __sock_cmsg_send(struct sock *sk, struct msghdr *msg, struct cmsghdr *cmsg,
1650 int sock_cmsg_send(struct sock *sk, struct msghdr *msg,
1668 int sock_no_sendmsg_locked(struct sock *sk, struct msghdr *msg, size_t len);
1674 ssize_t sock_no_sendpage_locked(struct sock *sk, struct page *page,
1692 void sk_common_release(struct sock *sk);
1699 void sock_init_data(struct socket *sock, struct sock *sk);
1727 static inline void sock_put(struct sock *sk) in sock_put() argument
1729 if (refcount_dec_and_test(&sk->sk_refcnt)) in sock_put()
1730 sk_free(sk); in sock_put()
1735 void sock_gen_put(struct sock *sk);
1737 int __sk_receive_skb(struct sock *sk, struct sk_buff *skb, const int nested,
1739 static inline int sk_receive_skb(struct sock *sk, struct sk_buff *skb, in sk_receive_skb() argument
1742 return __sk_receive_skb(sk, skb, nested, 1, true); in sk_receive_skb()
1745 static inline void sk_tx_queue_set(struct sock *sk, int tx_queue) in sk_tx_queue_set() argument
1750 sk->sk_tx_queue_mapping = tx_queue; in sk_tx_queue_set()
1755 static inline void sk_tx_queue_clear(struct sock *sk) in sk_tx_queue_clear() argument
1757 sk->sk_tx_queue_mapping = NO_QUEUE_MAPPING; in sk_tx_queue_clear()
1760 static inline int sk_tx_queue_get(const struct sock *sk) in sk_tx_queue_get() argument
1762 if (sk && sk->sk_tx_queue_mapping != NO_QUEUE_MAPPING) in sk_tx_queue_get()
1763 return sk->sk_tx_queue_mapping; in sk_tx_queue_get()
1768 static inline void sk_rx_queue_set(struct sock *sk, const struct sk_buff *skb) in sk_rx_queue_set() argument
1777 sk->sk_rx_queue_mapping = rx_queue; in sk_rx_queue_set()
1782 static inline void sk_rx_queue_clear(struct sock *sk) in sk_rx_queue_clear() argument
1785 sk->sk_rx_queue_mapping = NO_QUEUE_MAPPING; in sk_rx_queue_clear()
1790 static inline int sk_rx_queue_get(const struct sock *sk) in sk_rx_queue_get() argument
1792 if (sk && sk->sk_rx_queue_mapping != NO_QUEUE_MAPPING) in sk_rx_queue_get()
1793 return sk->sk_rx_queue_mapping; in sk_rx_queue_get()
1799 static inline void sk_set_socket(struct sock *sk, struct socket *sock) in sk_set_socket() argument
1801 sk_tx_queue_clear(sk); in sk_set_socket()
1802 sk->sk_socket = sock; in sk_set_socket()
1805 static inline wait_queue_head_t *sk_sleep(struct sock *sk) in sk_sleep() argument
1808 return &rcu_dereference_raw(sk->sk_wq)->wait; in sk_sleep()
1817 static inline void sock_orphan(struct sock *sk) in sock_orphan() argument
1819 write_lock_bh(&sk->sk_callback_lock); in sock_orphan()
1820 sock_set_flag(sk, SOCK_DEAD); in sock_orphan()
1821 sk_set_socket(sk, NULL); in sock_orphan()
1822 sk->sk_wq = NULL; in sock_orphan()
1823 write_unlock_bh(&sk->sk_callback_lock); in sock_orphan()
1826 static inline void sock_graft(struct sock *sk, struct socket *parent) in sock_graft() argument
1828 WARN_ON(parent->sk); in sock_graft()
1829 write_lock_bh(&sk->sk_callback_lock); in sock_graft()
1830 rcu_assign_pointer(sk->sk_wq, &parent->wq); in sock_graft()
1831 parent->sk = sk; in sock_graft()
1832 sk_set_socket(sk, parent); in sock_graft()
1833 sk->sk_uid = SOCK_INODE(parent)->i_uid; in sock_graft()
1834 security_sock_graft(sk, parent); in sock_graft()
1835 write_unlock_bh(&sk->sk_callback_lock); in sock_graft()
1838 kuid_t sock_i_uid(struct sock *sk);
1839 unsigned long sock_i_ino(struct sock *sk);
1841 static inline kuid_t sock_net_uid(const struct net *net, const struct sock *sk) in sock_net_uid() argument
1843 return sk ? sk->sk_uid : make_kuid(net->user_ns, 0); in sock_net_uid()
1853 static inline void sk_set_txhash(struct sock *sk) in sk_set_txhash() argument
1855 sk->sk_txhash = net_tx_rndhash(); in sk_set_txhash()
1858 static inline void sk_rethink_txhash(struct sock *sk) in sk_rethink_txhash() argument
1860 if (sk->sk_txhash) in sk_rethink_txhash()
1861 sk_set_txhash(sk); in sk_rethink_txhash()
1865 __sk_dst_get(struct sock *sk) in __sk_dst_get() argument
1867 return rcu_dereference_check(sk->sk_dst_cache, in __sk_dst_get()
1868 lockdep_sock_is_held(sk)); in __sk_dst_get()
1872 sk_dst_get(struct sock *sk) in sk_dst_get() argument
1877 dst = rcu_dereference(sk->sk_dst_cache); in sk_dst_get()
1884 static inline void dst_negative_advice(struct sock *sk) in dst_negative_advice() argument
1886 struct dst_entry *ndst, *dst = __sk_dst_get(sk); in dst_negative_advice()
1888 sk_rethink_txhash(sk); in dst_negative_advice()
1894 rcu_assign_pointer(sk->sk_dst_cache, ndst); in dst_negative_advice()
1895 sk_tx_queue_clear(sk); in dst_negative_advice()
1896 sk->sk_dst_pending_confirm = 0; in dst_negative_advice()
1902 __sk_dst_set(struct sock *sk, struct dst_entry *dst) in __sk_dst_set() argument
1906 sk_tx_queue_clear(sk); in __sk_dst_set()
1907 sk->sk_dst_pending_confirm = 0; in __sk_dst_set()
1908 old_dst = rcu_dereference_protected(sk->sk_dst_cache, in __sk_dst_set()
1909 lockdep_sock_is_held(sk)); in __sk_dst_set()
1910 rcu_assign_pointer(sk->sk_dst_cache, dst); in __sk_dst_set()
1915 sk_dst_set(struct sock *sk, struct dst_entry *dst) in sk_dst_set() argument
1919 sk_tx_queue_clear(sk); in sk_dst_set()
1920 sk->sk_dst_pending_confirm = 0; in sk_dst_set()
1921 old_dst = xchg((__force struct dst_entry **)&sk->sk_dst_cache, dst); in sk_dst_set()
1926 __sk_dst_reset(struct sock *sk) in __sk_dst_reset() argument
1928 __sk_dst_set(sk, NULL); in __sk_dst_reset()
1932 sk_dst_reset(struct sock *sk) in sk_dst_reset() argument
1934 sk_dst_set(sk, NULL); in sk_dst_reset()
1937 struct dst_entry *__sk_dst_check(struct sock *sk, u32 cookie);
1939 struct dst_entry *sk_dst_check(struct sock *sk, u32 cookie);
1941 static inline void sk_dst_confirm(struct sock *sk) in sk_dst_confirm() argument
1943 if (!sk->sk_dst_pending_confirm) in sk_dst_confirm()
1944 sk->sk_dst_pending_confirm = 1; in sk_dst_confirm()
1950 struct sock *sk = skb->sk; in sock_confirm_neigh() local
1956 if (sk && sk->sk_dst_pending_confirm) in sock_confirm_neigh()
1957 sk->sk_dst_pending_confirm = 0; in sock_confirm_neigh()
1961 bool sk_mc_loop(struct sock *sk);
1963 static inline bool sk_can_gso(const struct sock *sk) in sk_can_gso() argument
1965 return net_gso_ok(sk->sk_route_caps, sk->sk_gso_type); in sk_can_gso()
1968 void sk_setup_caps(struct sock *sk, struct dst_entry *dst);
1970 static inline void sk_nocaps_add(struct sock *sk, netdev_features_t flags) in sk_nocaps_add() argument
1972 sk->sk_route_nocaps |= flags; in sk_nocaps_add()
1973 sk->sk_route_caps &= ~flags; in sk_nocaps_add()
1976 static inline int skb_do_copy_data_nocache(struct sock *sk, struct sk_buff *skb, in skb_do_copy_data_nocache() argument
1985 } else if (sk->sk_route_caps & NETIF_F_NOCACHE_COPY) { in skb_do_copy_data_nocache()
1994 static inline int skb_add_data_nocache(struct sock *sk, struct sk_buff *skb, in skb_add_data_nocache() argument
1999 err = skb_do_copy_data_nocache(sk, skb, from, skb_put(skb, copy), in skb_add_data_nocache()
2007 static inline int skb_copy_to_page_nocache(struct sock *sk, struct iov_iter *from, in skb_copy_to_page_nocache() argument
2014 err = skb_do_copy_data_nocache(sk, skb, from, page_address(page) + off, in skb_copy_to_page_nocache()
2022 sk_wmem_queued_add(sk, copy); in skb_copy_to_page_nocache()
2023 sk_mem_charge(sk, copy); in skb_copy_to_page_nocache()
2033 static inline int sk_wmem_alloc_get(const struct sock *sk) in sk_wmem_alloc_get() argument
2035 return refcount_read(&sk->sk_wmem_alloc) - 1; in sk_wmem_alloc_get()
2044 static inline int sk_rmem_alloc_get(const struct sock *sk) in sk_rmem_alloc_get() argument
2046 return atomic_read(&sk->sk_rmem_alloc); in sk_rmem_alloc_get()
2055 static inline bool sk_has_allocations(const struct sock *sk) in sk_has_allocations() argument
2057 return sk_wmem_alloc_get(sk) || sk_rmem_alloc_get(sk); in sk_has_allocations()
2118 static inline void skb_set_hash_from_sk(struct sk_buff *skb, struct sock *sk) in skb_set_hash_from_sk() argument
2120 if (sk->sk_txhash) { in skb_set_hash_from_sk()
2122 skb->hash = sk->sk_txhash; in skb_set_hash_from_sk()
2126 void skb_set_owner_w(struct sk_buff *skb, struct sock *sk);
2136 static inline void skb_set_owner_r(struct sk_buff *skb, struct sock *sk) in skb_set_owner_r() argument
2139 skb->sk = sk; in skb_set_owner_r()
2141 atomic_add(skb->truesize, &sk->sk_rmem_alloc); in skb_set_owner_r()
2142 sk_mem_charge(sk, skb->truesize); in skb_set_owner_r()
2145 void sk_reset_timer(struct sock *sk, struct timer_list *timer,
2148 void sk_stop_timer(struct sock *sk, struct timer_list *timer);
2150 int __sk_queue_drop_skb(struct sock *sk, struct sk_buff_head *sk_queue,
2152 void (*destructor)(struct sock *sk,
2154 int __sock_queue_rcv_skb(struct sock *sk, struct sk_buff *skb);
2155 int sock_queue_rcv_skb(struct sock *sk, struct sk_buff *skb);
2157 int sock_queue_err_skb(struct sock *sk, struct sk_buff *skb);
2158 struct sk_buff *sock_dequeue_err_skb(struct sock *sk);
2164 static inline int sock_error(struct sock *sk) in sock_error() argument
2167 if (likely(!sk->sk_err)) in sock_error()
2169 err = xchg(&sk->sk_err, 0); in sock_error()
2173 static inline unsigned long sock_wspace(struct sock *sk) in sock_wspace() argument
2177 if (!(sk->sk_shutdown & SEND_SHUTDOWN)) { in sock_wspace()
2178 amt = sk->sk_sndbuf - refcount_read(&sk->sk_wmem_alloc); in sock_wspace()
2189 static inline void sk_set_bit(int nr, struct sock *sk) in sk_set_bit() argument
2192 !sock_flag(sk, SOCK_FASYNC)) in sk_set_bit()
2195 set_bit(nr, &sk->sk_wq_raw->flags); in sk_set_bit()
2198 static inline void sk_clear_bit(int nr, struct sock *sk) in sk_clear_bit() argument
2201 !sock_flag(sk, SOCK_FASYNC)) in sk_clear_bit()
2204 clear_bit(nr, &sk->sk_wq_raw->flags); in sk_clear_bit()
2207 static inline void sk_wake_async(const struct sock *sk, int how, int band) in sk_wake_async() argument
2209 if (sock_flag(sk, SOCK_FASYNC)) { in sk_wake_async()
2211 sock_wake_async(rcu_dereference(sk->sk_wq), how, band); in sk_wake_async()
2226 static inline void sk_stream_moderate_sndbuf(struct sock *sk) in sk_stream_moderate_sndbuf() argument
2230 if (sk->sk_userlocks & SOCK_SNDBUF_LOCK) in sk_stream_moderate_sndbuf()
2233 val = min(sk->sk_sndbuf, sk->sk_wmem_queued >> 1); in sk_stream_moderate_sndbuf()
2235 WRITE_ONCE(sk->sk_sndbuf, max_t(u32, val, SOCK_MIN_SNDBUF)); in sk_stream_moderate_sndbuf()
2238 struct sk_buff *sk_stream_alloc_skb(struct sock *sk, int size, gfp_t gfp,
2253 static inline struct page_frag *sk_page_frag(struct sock *sk) in sk_page_frag() argument
2255 if (gfpflags_normal_context(sk->sk_allocation)) in sk_page_frag()
2258 return &sk->sk_frag; in sk_page_frag()
2261 bool sk_page_frag_refill(struct sock *sk, struct page_frag *pfrag);
2266 static inline bool sock_writeable(const struct sock *sk) in sock_writeable() argument
2268 return refcount_read(&sk->sk_wmem_alloc) < (READ_ONCE(sk->sk_sndbuf) >> 1); in sock_writeable()
2276 static inline long sock_rcvtimeo(const struct sock *sk, bool noblock) in sock_rcvtimeo() argument
2278 return noblock ? 0 : sk->sk_rcvtimeo; in sock_rcvtimeo()
2281 static inline long sock_sndtimeo(const struct sock *sk, bool noblock) in sock_sndtimeo() argument
2283 return noblock ? 0 : sk->sk_sndtimeo; in sock_sndtimeo()
2286 static inline int sock_rcvlowat(const struct sock *sk, int waitall, int len) in sock_rcvlowat() argument
2288 int v = waitall ? len : min_t(int, READ_ONCE(sk->sk_rcvlowat), len); in sock_rcvlowat()
2319 sock_skb_set_dropcount(const struct sock *sk, struct sk_buff *skb) in sock_skb_set_dropcount() argument
2321 SOCK_SKB_CB(skb)->dropcount = sock_flag(sk, SOCK_RXQ_OVFL) ? in sock_skb_set_dropcount()
2322 atomic_read(&sk->sk_drops) : 0; in sock_skb_set_dropcount()
2325 static inline void sk_drops_add(struct sock *sk, const struct sk_buff *skb) in sk_drops_add() argument
2329 atomic_add(segs, &sk->sk_drops); in sk_drops_add()
2332 static inline ktime_t sock_read_timestamp(struct sock *sk) in sock_read_timestamp() argument
2339 seq = read_seqbegin(&sk->sk_stamp_seq); in sock_read_timestamp()
2340 kt = sk->sk_stamp; in sock_read_timestamp()
2341 } while (read_seqretry(&sk->sk_stamp_seq, seq)); in sock_read_timestamp()
2345 return READ_ONCE(sk->sk_stamp); in sock_read_timestamp()
2349 static inline void sock_write_timestamp(struct sock *sk, ktime_t kt) in sock_write_timestamp() argument
2352 write_seqlock(&sk->sk_stamp_seq); in sock_write_timestamp()
2353 sk->sk_stamp = kt; in sock_write_timestamp()
2354 write_sequnlock(&sk->sk_stamp_seq); in sock_write_timestamp()
2356 WRITE_ONCE(sk->sk_stamp, kt); in sock_write_timestamp()
2360 void __sock_recv_timestamp(struct msghdr *msg, struct sock *sk,
2362 void __sock_recv_wifi_status(struct msghdr *msg, struct sock *sk,
2366 sock_recv_timestamp(struct msghdr *msg, struct sock *sk, struct sk_buff *skb) in sock_recv_timestamp() argument
2377 if (sock_flag(sk, SOCK_RCVTSTAMP) || in sock_recv_timestamp()
2378 (sk->sk_tsflags & SOF_TIMESTAMPING_RX_SOFTWARE) || in sock_recv_timestamp()
2379 (kt && sk->sk_tsflags & SOF_TIMESTAMPING_SOFTWARE) || in sock_recv_timestamp()
2381 (sk->sk_tsflags & SOF_TIMESTAMPING_RAW_HARDWARE))) in sock_recv_timestamp()
2382 __sock_recv_timestamp(msg, sk, skb); in sock_recv_timestamp()
2384 sock_write_timestamp(sk, kt); in sock_recv_timestamp()
2386 if (sock_flag(sk, SOCK_WIFI_STATUS) && skb->wifi_acked_valid) in sock_recv_timestamp()
2387 __sock_recv_wifi_status(msg, sk, skb); in sock_recv_timestamp()
2390 void __sock_recv_ts_and_drops(struct msghdr *msg, struct sock *sk,
2394 static inline void sock_recv_ts_and_drops(struct msghdr *msg, struct sock *sk, in sock_recv_ts_and_drops() argument
2402 if (sk->sk_flags & FLAGS_TS_OR_DROPS || sk->sk_tsflags & TSFLAGS_ANY) in sock_recv_ts_and_drops()
2403 __sock_recv_ts_and_drops(msg, sk, skb); in sock_recv_ts_and_drops()
2404 else if (unlikely(sock_flag(sk, SOCK_TIMESTAMP))) in sock_recv_ts_and_drops()
2405 sock_write_timestamp(sk, skb->tstamp); in sock_recv_ts_and_drops()
2406 else if (unlikely(sk->sk_stamp == SK_DEFAULT_STAMP)) in sock_recv_ts_and_drops()
2407 sock_write_timestamp(sk, 0); in sock_recv_ts_and_drops()
2421 static inline void _sock_tx_timestamp(struct sock *sk, __u16 tsflags, in _sock_tx_timestamp() argument
2428 *tskey = sk->sk_tskey++; in _sock_tx_timestamp()
2430 if (unlikely(sock_flag(sk, SOCK_WIFI_STATUS))) in _sock_tx_timestamp()
2434 static inline void sock_tx_timestamp(struct sock *sk, __u16 tsflags, in sock_tx_timestamp() argument
2437 _sock_tx_timestamp(sk, tsflags, tx_flags, NULL); in sock_tx_timestamp()
2442 _sock_tx_timestamp(skb->sk, tsflags, &skb_shinfo(skb)->tx_flags, in skb_setup_tx_timestamp()
2455 static inline void sk_eat_skb(struct sock *sk, struct sk_buff *skb) in sk_eat_skb() argument
2457 __skb_unlink(skb, &sk->sk_receive_queue); in sk_eat_skb()
2459 !sk->sk_rx_skb_cache) { in sk_eat_skb()
2460 sk->sk_rx_skb_cache = skb; in sk_eat_skb()
2468 struct net *sock_net(const struct sock *sk) in sock_net() argument
2470 return read_pnet(&sk->sk_net); in sock_net()
2474 void sock_net_set(struct sock *sk, struct net *net) in sock_net_set() argument
2476 write_pnet(&sk->sk_net, net); in sock_net_set()
2481 if (skb->sk) { in skb_steal_sock()
2482 struct sock *sk = skb->sk; in skb_steal_sock() local
2485 skb->sk = NULL; in skb_steal_sock()
2486 return sk; in skb_steal_sock()
2494 static inline bool sk_fullsock(const struct sock *sk) in sk_fullsock() argument
2496 return (1 << sk->sk_state) & ~(TCPF_TIME_WAIT | TCPF_NEW_SYN_RECV); in sk_fullsock()
2507 struct sock *sk = skb->sk; in sk_validate_xmit_skb() local
2509 if (sk && sk_fullsock(sk) && sk->sk_validate_xmit_skb) { in sk_validate_xmit_skb()
2510 skb = sk->sk_validate_xmit_skb(sk, dev, skb); in sk_validate_xmit_skb()
2526 static inline bool sk_listener(const struct sock *sk) in sk_listener() argument
2528 return (1 << sk->sk_state) & (TCPF_LISTEN | TCPF_NEW_SYN_RECV); in sk_listener()
2531 void sock_enable_timestamp(struct sock *sk, int flag);
2532 int sock_recv_errqueue(struct sock *sk, struct msghdr *msg, int len, int level,
2535 bool sk_ns_capable(const struct sock *sk,
2537 bool sk_capable(const struct sock *sk, int cap);
2538 bool sk_net_capable(const struct sock *sk, int cap);
2540 void sk_get_meminfo(const struct sock *sk, u32 *meminfo);
2563 static inline int sk_get_wmem0(const struct sock *sk, const struct proto *proto) in sk_get_wmem0() argument
2567 return *(int *)((void *)sock_net(sk) + proto->sysctl_wmem_offset); in sk_get_wmem0()
2572 static inline int sk_get_rmem0(const struct sock *sk, const struct proto *proto) in sk_get_rmem0() argument
2576 return *(int *)((void *)sock_net(sk) + proto->sysctl_rmem_offset); in sk_get_rmem0()
2585 static inline void sk_pacing_shift_update(struct sock *sk, int val) in sk_pacing_shift_update() argument
2587 if (!sk || !sk_fullsock(sk) || sk->sk_pacing_shift == val) in sk_pacing_shift_update()
2589 sk->sk_pacing_shift = val; in sk_pacing_shift_update()
2597 static inline bool sk_dev_equal_l3scope(struct sock *sk, int dif) in sk_dev_equal_l3scope() argument
2601 if (!sk->sk_bound_dev_if || sk->sk_bound_dev_if == dif) in sk_dev_equal_l3scope()
2604 mdif = l3mdev_master_ifindex_by_index(sock_net(sk), dif); in sk_dev_equal_l3scope()
2605 if (mdif && mdif == sk->sk_bound_dev_if) in sk_dev_equal_l3scope()