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SK_WAIT_DATA(9) Linux Networking SK_WAIT_DATA(9)

NAME

sk_wait_data - wait for data to arrive at sk_receive_queue

SYNOPSIS

int sk_wait_data(struct sock * sk, long * timeo, const struct sk_buff * skb);

ARGUMENTS

struct sock * sk

sock to wait on

long * timeo

for how long

const struct sk_buff * skb

last skb seen on sk_receive_queue

DESCRIPTION

Now socket state including sk->sk_err is changed only under lock, hence we may omit checks after joining wait queue. We check receive queue before schedule only as optimization; it is very likely that release_sock added new data.

COPYRIGHT

September 2017 Kernel Hackers Manual 4.12