From db45c0ef258ef6c7ef3c1b8ea9e06e133e083c27 Mon Sep 17 00:00:00 2001
From: Christoph Hellwig <hch@lst.de>
Date: Thu, 28 May 2020 07:12:28 +0200
Subject: ipv4: add ip_sock_set_recverr
Add a helper to directly set the IP_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>
---
net/ipv4/ip_sockglue.c | 8 ++++++++
1 file changed, 8 insertions(+)
(limited to 'net/ipv4')
diff --git a/net/ipv4/ip_sockglue.c b/net/ipv4/ip_sockglue.c
index 767838d2030d..aca6b81da9ba 100644
--- a/net/ipv4/ip_sockglue.c
+++ b/net/ipv4/ip_sockglue.c
@@ -589,6 +589,14 @@ void ip_sock_set_freebind(struct sock *sk)
}
EXPORT_SYMBOL(ip_sock_set_freebind);
+void ip_sock_set_recverr(struct sock *sk)
+{
+ lock_sock(sk);
+ inet_sk(sk)->recverr = true;
+ release_sock(sk);
+}
+EXPORT_SYMBOL(ip_sock_set_recverr);
+
/*
* Socket option code for IP. This is the end of the line after any
* TCP,UDP etc options on an IP socket.
--
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