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| author | Xin Long <lucien.xin@gmail.com> | 2018-05-20 16:39:10 +0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-05-22 13:37:26 -0400 |
| commit | 644fbdeacf1d3edd366e44b8ba214de9d1dd66a9 (patch) | |
| tree | 53b64f45a8799966c7ea61dde150e14e9bc1e4f4 /net/sctp/protocol.c | |
| parent | 6741c4bb389da103c0d79ad1961884628900bfe6 (diff) | |
| download | linux-644fbdeacf1d3edd366e44b8ba214de9d1dd66a9.tar.bz2 | |
sctp: fix the issue that flags are ignored when using kernel_connect
Now sctp uses inet_dgram_connect as its proto_ops .connect, and the flags
param can't be passed into its proto .connect where this flags is really
needed.
sctp works around it by getting flags from socket file in __sctp_connect.
It works for connecting from userspace, as inherently the user sock has
socket file and it passes f_flags as the flags param into the proto_ops
.connect.
However, the sock created by sock_create_kern doesn't have a socket file,
and it passes the flags (like O_NONBLOCK) by using the flags param in
kernel_connect, which calls proto_ops .connect later.
So to fix it, this patch defines a new proto_ops .connect for sctp,
sctp_inet_connect, which calls __sctp_connect() directly with this
flags param. After this, the sctp's proto .connect can be removed.
Note that sctp_inet_connect doesn't need to do some checks that are not
needed for sctp, which makes thing better than with inet_dgram_connect.
Suggested-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Reviewed-by: Michal Kubecek <mkubecek@suse.cz>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sctp/protocol.c')
| -rw-r--r-- | net/sctp/protocol.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/sctp/protocol.c b/net/sctp/protocol.c index d685f8456762..6bf0a9971888 100644 --- a/net/sctp/protocol.c +++ b/net/sctp/protocol.c @@ -1012,7 +1012,7 @@ static const struct proto_ops inet_seqpacket_ops = { .owner = THIS_MODULE, .release = inet_release, /* Needs to be wrapped... */ .bind = inet_bind, - .connect = inet_dgram_connect, + .connect = sctp_inet_connect, .socketpair = sock_no_socketpair, .accept = inet_accept, .getname = inet_getname, /* Semantics are different. */ |