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57 lines
1.9 KiB
Diff
57 lines
1.9 KiB
Diff
From 1179c8f1caca90caf4ce0eec54b499de4f1551c4 Mon Sep 17 00:00:00 2001
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From: Sasha Levin <sasha.levin@oracle.com>
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Date: Mon, 14 Jul 2014 17:02:31 -0700
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Subject: net/l2tp: don't fall back on UDP [get|set]sockopt
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commit 3cf521f7dc87c031617fd47e4b7aa2593c2f3daf upstream.
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The l2tp [get|set]sockopt() code has fallen back to the UDP functions
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for socket option levels != SOL_PPPOL2TP since day one, but that has
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never actually worked, since the l2tp socket isn't an inet socket.
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As David Miller points out:
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"If we wanted this to work, it'd have to look up the tunnel and then
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use tunnel->sk, but I wonder how useful that would be"
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Since this can never have worked so nobody could possibly have depended
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on that functionality, just remove the broken code and return -EINVAL.
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Reported-by: Sasha Levin <sasha.levin@oracle.com>
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Acked-by: James Chapman <jchapman@katalix.com>
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Acked-by: David Miller <davem@davemloft.net>
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Cc: Phil Turnbull <phil.turnbull@oracle.com>
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Cc: Vegard Nossum <vegard.nossum@oracle.com>
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Cc: Willy Tarreau <w@1wt.eu>
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Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
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---
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net/l2tp/l2tp_ppp.c | 4 ++--
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1 file changed, 2 insertions(+), 2 deletions(-)
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diff --git a/net/l2tp/l2tp_ppp.c b/net/l2tp/l2tp_ppp.c
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index e0f0934..437fb59 100644
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--- a/net/l2tp/l2tp_ppp.c
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+++ b/net/l2tp/l2tp_ppp.c
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@@ -1351,7 +1351,7 @@ static int pppol2tp_setsockopt(struct socket *sock, int level, int optname,
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int err;
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if (level != SOL_PPPOL2TP)
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- return udp_prot.setsockopt(sk, level, optname, optval, optlen);
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+ return -EINVAL;
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if (optlen < sizeof(int))
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return -EINVAL;
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@@ -1477,7 +1477,7 @@ static int pppol2tp_getsockopt(struct socket *sock, int level,
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struct pppol2tp_session *ps;
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if (level != SOL_PPPOL2TP)
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- return udp_prot.getsockopt(sk, level, optname, optval, optlen);
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+ return -EINVAL;
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if (get_user(len, (int __user *) optlen))
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return -EFAULT;
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--
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cgit v1.1
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