Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:include\linux\skmsg.h Create Date:2022-07-28 13:16:53
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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Annotation kernel can get tool activityDownload SCCTChinese

Name:sk_psock_get_checked

Proto:static inline struct sk_psock *sk_psock_get_checked(struct sock *sk)

Type:struct sk_psock

Parameter:

TypeParameterName
struct sock *sk
402  _read_lock() - mark the beginning of an RCU read-side critical section* When synchronize_rcu() is invoked on one CPU while other CPUs* are within RCU read-side critical sections, then the* synchronize_rcu() is guaranteed to block until after all the other
403  psock = sk_psock(sk)
404  If psock Then
405  If recvmsg != tcp_bpf_recvmsg Then
406  psock = ERR_PTR( - EBUSY)
407  Go to out
410  If Not _inc_not_zero - increment a refcount unless it is 0*@r: the refcount to increment* Similar to atomic_inc_not_zero(), but will saturate at REFCOUNT_SATURATED* and WARN.* Provides no memory ordering, it is assumed the caller has guaranteed the Then psock = ERR_PTR( - EBUSY)
413  out :
414  _read_unlock() - marks the end of an RCU read-side critical section.* In most situations, rcu_read_unlock() is immune from deadlock.* However, in kernels built with CONFIG_RCU_BOOST, rcu_read_unlock()
415  Return psock