bianbu-linux-6.6/net/mptcp
Matthieu Baerts (NGI0) d4c67071f4 mptcp: pm: deny endp with signal + subflow + port
commit 8af1f11865f259c882cce71d32f85ee9004e2660 upstream.

As mentioned in the 'Fixes' commit, the port flag is only supported by
the 'signal' flag, and not by the 'subflow' one. Then if both the
'signal' and 'subflow' flags are set, the problem is the same: the
feature cannot work with the 'subflow' flag.

Technically, if both the 'signal' and 'subflow' flags are set, it will
be possible to create the listening socket, but not to establish a
subflow using this source port. So better to explicitly deny it, not to
create some confusions because the expected behaviour is not possible.

Fixes: 09f12c3ab7 ("mptcp: allow to use port and non-signal in set_flags")
Cc: stable@vger.kernel.org
Reviewed-by: Mat Martineau <martineau@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://patch.msgid.link/20240731-upstream-net-20240731-mptcp-endp-subflow-signal-v1-2-c8a9b036493b@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-08-14 13:59:02 +02:00
..
bpf.c bpf: Add update_socket_protocol hook 2023-08-16 10:22:16 -07:00
crypto.c kunit: mptcp: adhere to KUNIT formatting standard 2021-04-16 17:10:40 -07:00
crypto_test.c mptcp: move crypto test to KUNIT 2020-06-26 16:21:39 -07:00
ctrl.c mptcp: only allow set existing scheduler for net.mptcp.scheduler 2024-05-17 12:02:30 +02:00
diag.c mptcp: fix possible deadlock in subflow diag 2024-03-06 14:48:42 +00:00
fastopen.c mptcp: corner case locking for rx path fields initialization 2024-03-01 13:34:57 +01:00
Kconfig kunit: mptcp: adhere to KUNIT formatting standard 2021-04-16 17:10:40 -07:00
Makefile mptcp: add struct mptcp_sched_ops 2023-08-22 17:31:18 -07:00
mib.c mptcp: mib: count MPJ with backup flag 2024-08-11 12:47:27 +02:00
mib.h mptcp: mib: count MPJ with backup flag 2024-08-11 12:47:27 +02:00
mptcp_diag.c tcp: Access &tcp_hashinfo via net. 2022-09-20 10:21:49 -07:00
options.c mptcp: fully established after ADD_ADDR echo on MPJ 2024-08-14 13:59:01 +02:00
pm.c mptcp: pm: fix backup support in signal endpoints 2024-08-14 13:59:01 +02:00
pm_netlink.c mptcp: pm: deny endp with signal + subflow + port 2024-08-14 13:59:02 +02:00
pm_userspace.c mptcp: pm: fix backup support in signal endpoints 2024-08-14 13:59:01 +02:00
protocol.c mptcp: fix bad RCVPRUNED mib accounting 2024-08-11 12:47:27 +02:00
protocol.h mptcp: pm: fix backup support in signal endpoints 2024-08-14 13:59:01 +02:00
sched.c mptcp: register default scheduler 2023-08-22 17:31:19 -07:00
sockopt.c mptcp: prevent BPF accessing lowat from a subflow socket. 2024-08-11 12:47:28 +02:00
subflow.c mptcp: pm: fix backup support in signal endpoints 2024-08-14 13:59:01 +02:00
syncookies.c mptcp: don't return sockets in foreign netns 2021-09-24 10:51:36 +01:00
token.c mptcp: add statistics for mptcp socket in use 2023-01-09 07:30:50 +00:00
token_test.c mptcp: init sk->sk_prot in build_msk() 2023-01-09 07:30:50 +00:00