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authorChristoph Hellwig <hch@lst.de>2020-05-28 08:12:15 +0300
committerDavid S. Miller <davem@davemloft.net>2020-05-28 21:11:44 +0300
commitce3d9544cecacd40389c399d2b7ca31acc533b70 (patch)
tree188689107da003fa8137181ab48f6ad973414acc /net/core
parent783da70e83967efeacf3c02c9dcfdc2b17bd62eb (diff)
downloadlinux-ce3d9544cecacd40389c399d2b7ca31acc533b70.tar.xz
net: add sock_set_keepalive
Add a helper to directly set the SO_KEEPALIVE 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>
Diffstat (limited to 'net/core')
-rw-r--r--net/core/sock.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/net/core/sock.c b/net/core/sock.c
index e4a4dd2b3d8b..728f5fb156a0 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -779,6 +779,16 @@ void sock_enable_timestamps(struct sock *sk)
}
EXPORT_SYMBOL(sock_enable_timestamps);
+void sock_set_keepalive(struct sock *sk)
+{
+ lock_sock(sk);
+ if (sk->sk_prot->keepalive)
+ sk->sk_prot->keepalive(sk, true);
+ sock_valbool_flag(sk, SOCK_KEEPOPEN, true);
+ release_sock(sk);
+}
+EXPORT_SYMBOL(sock_set_keepalive);
+
/*
* This is meant for all protocols to use and covers goings on
* at the socket level. Everything here is generic.