diff options
| author | Geliang Tang <geliangtang@gmail.com> | 2021-06-22 12:25:20 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-06-22 14:36:01 -0700 |
| commit | df377be38725ced628251c1a3b954ef932a5586e (patch) | |
| tree | e0725441657f35da0aa427c5d1b521852d732e27 /net/mptcp/pm_netlink.c | |
| parent | bab6b88e056038f618b2fb977d95b05ad3da8d0c (diff) | |
mptcp: add deny_join_id0 in mptcp_options_received
This patch added a new flag named deny_join_id0 in struct
mptcp_options_received. Set it when MP_CAPABLE with the flag
MPTCP_CAP_DENYJOIN_ID0 is received.
Also add a new flag remote_deny_join_id0 in struct mptcp_pm_data. When the
flag deny_join_id0 is set, set this remote_deny_join_id0 flag.
In mptcp_pm_create_subflow_or_signal_addr, if the remote_deny_join_id0 flag
is set, and the remote address id is zero, stop this connection.
Suggested-by: Florian Westphal <fw@strlen.de>
Acked-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Geliang Tang <geliangtang@gmail.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/mptcp/pm_netlink.c')
| -rw-r--r-- | net/mptcp/pm_netlink.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/net/mptcp/pm_netlink.c b/net/mptcp/pm_netlink.c index d4732a4f223e..d2591ebf01d9 100644 --- a/net/mptcp/pm_netlink.c +++ b/net/mptcp/pm_netlink.c @@ -451,7 +451,8 @@ static void mptcp_pm_create_subflow_or_signal_addr(struct mptcp_sock *msk) /* check if should create a new subflow */ if (msk->pm.local_addr_used < local_addr_max && - msk->pm.subflows < subflows_max) { + msk->pm.subflows < subflows_max && + !READ_ONCE(msk->pm.remote_deny_join_id0)) { local = select_local_address(pernet, msk); if (local) { struct mptcp_addr_info remote = { 0 }; |