From fce934949c0f0003c1777fbf8c0706ba82a8cf7e Mon Sep 17 00:00:00 2001
From: Christoph Hellwig <hch@lst.de>
Date: Thu, 28 May 2020 07:12:32 +0200
Subject: ipv6: add ip6_sock_set_recverr

Add a helper to directly set the IPV6_RECVERR sockopt from kernel space
without going through a fake uaccess.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: David Howells <dhowells@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 include/net/ipv6.h | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'include/net/ipv6.h')

diff --git a/include/net/ipv6.h b/include/net/ipv6.h
index 9b91188c9a74..49c4abf99148 100644
--- a/include/net/ipv6.h
+++ b/include/net/ipv6.h
@@ -1188,4 +1188,11 @@ static inline int ip6_sock_set_v6only(struct sock *sk)
 	return 0;
 }
 
+static inline void ip6_sock_set_recverr(struct sock *sk)
+{
+	lock_sock(sk);
+	inet6_sk(sk)->recverr = true;
+	release_sock(sk);
+}
+
 #endif /* _NET_IPV6_H */
-- 
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