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| author | Sasha Levin <sasha.levin@oracle.com> | 2014-07-14 17:02:31 -0700 |
|---|---|---|
| committer | Wolfgang Wiedmeyer <wolfgit@wiedmeyer.de> | 2016-03-18 01:51:05 +0100 |
| commit | d576ad7a9bea9be74ed9c9f99eb31924ce26aba7 (patch) | |
| tree | 84f5cc219fe6daf6cb08987e50cb866aad5f2782 | |
| parent | 5a0011f02108bb2ea240ce2efd6a760191e62056 (diff) | |
| download | kernel_samsung_smdk4412-d576ad7a9bea9be74ed9c9f99eb31924ce26aba7.zip kernel_samsung_smdk4412-d576ad7a9bea9be74ed9c9f99eb31924ce26aba7.tar.gz kernel_samsung_smdk4412-d576ad7a9bea9be74ed9c9f99eb31924ce26aba7.tar.bz2 | |
net/l2tp: don't fall back on UDP [get|set]sockopt
The l2tp [get|set]sockopt() code has fallen back to the UDP functions
for socket option levels != SOL_PPPOL2TP since day one, but that has
never actually worked, since the l2tp socket isn't an inet socket.
As David Miller points out:
"If we wanted this to work, it'd have to look up the tunnel and then
use tunnel->sk, but I wonder how useful that would be"
Since this can never have worked so nobody could possibly have depended
on that functionality, just remove the broken code and return -EINVAL.
Change-Id: I5fc9d8033eb368e72436ec7682adaa1ff387615a
Reported-by: Sasha Levin <sasha.levin@oracle.com>
Acked-by: James Chapman <jchapman@katalix.com>
Acked-by: David Miller <davem@davemloft.net>
Cc: Phil Turnbull <phil.turnbull@oracle.com>
Cc: Vegard Nossum <vegard.nossum@oracle.com>
Cc: Willy Tarreau <w@1wt.eu>
Cc: stable@vger.kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | net/l2tp/l2tp_ppp.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/net/l2tp/l2tp_ppp.c b/net/l2tp/l2tp_ppp.c index 2366914..af62439 100644 --- a/net/l2tp/l2tp_ppp.c +++ b/net/l2tp/l2tp_ppp.c @@ -1342,7 +1342,7 @@ static int pppol2tp_setsockopt(struct socket *sock, int level, int optname, int err; if (level != SOL_PPPOL2TP) - return udp_prot.setsockopt(sk, level, optname, optval, optlen); + return -EINVAL; if (optlen < sizeof(int)) return -EINVAL; @@ -1468,7 +1468,7 @@ static int pppol2tp_getsockopt(struct socket *sock, int level, struct pppol2tp_session *ps; if (level != SOL_PPPOL2TP) - return udp_prot.getsockopt(sk, level, optname, optval, optlen); + return -EINVAL; if (get_user(len, (int __user *) optlen)) return -EFAULT; |