android_kernel_samsung_a7y1.../include/net/sctp
Xin Long b9810220bc sctp: fix the issue that flags are ignored when using kernel_connect
commit 644fbdeacf1d3edd366e44b8ba214de9d1dd66a9 upstream.

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-04-07 09:28:40 +02:00
..
auth.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
checksum.h sctp: get sctphdr by offset in sctp_compute_cksum 2020-04-06 12:57:16 +02:00
command.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
constants.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
sctp.h sctp: fix the issue that flags are ignored when using kernel_connect 2020-04-07 09:28:40 +02:00
sm.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
structs.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
tsnmap.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
ulpevent.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
ulpqueue.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30