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net: add sock_set_reuseport

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Add a helper to directly set the SO_REUSEPORT sockopt from kernel space
without going through a fake uaccess.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Christoph Hellwig 2020-05-28 07:12:17 +02:00 • committed by David S. Miller
parent 26cfabf9cd
commit fe31a326a4
3 changed files with 10 additions and 16 deletions
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8
net/core/sock.c
View file

@ -729,6 +729,14 @@ void sock_set_reuseaddr(struct sock *sk)
}
EXPORT_SYMBOL(sock_set_reuseaddr);
void sock_set_reuseport(struct sock *sk)
{
lock_sock(sk);
sk->sk_reuseport = true;
release_sock(sk);
}
EXPORT_SYMBOL(sock_set_reuseport);
void sock_no_linger(struct sock *sk)
{
lock_sock(sk);