diff options
| author | Mat Martineau <mathew.j.martineau@linux.intel.com> | 2022-04-27 15:50:00 -0700 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2022-04-29 17:25:14 -0700 |
| commit | 6961326e38fe571ac1d2180041ce3142c8fd24d5 (patch) | |
| tree | 3d91298b8b65521883eed3367ccc2fb7d5386b17 /net/mptcp/pm_netlink.c | |
| parent | 14b06811bec686af3dbba58141c23b06f3e385bd (diff) | |
| download | linux-stable-6961326e38fe571ac1d2180041ce3142c8fd24d5.tar.gz linux-stable-6961326e38fe571ac1d2180041ce3142c8fd24d5.tar.bz2 linux-stable-6961326e38fe571ac1d2180041ce3142c8fd24d5.zip | |
mptcp: Make kernel path manager check for userspace-managed sockets
Userspace-managed sockets should not have their subflows or
advertisements changed by the kernel path manager.
v3: Use helper function for PM mode (Paolo Abeni)
Acked-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/mptcp/pm_netlink.c')
| -rw-r--r-- | net/mptcp/pm_netlink.c | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/net/mptcp/pm_netlink.c b/net/mptcp/pm_netlink.c index bbbbfb421eec..473e5aa7baf4 100644 --- a/net/mptcp/pm_netlink.c +++ b/net/mptcp/pm_netlink.c @@ -1220,7 +1220,8 @@ static int mptcp_nl_add_subflow_or_signal_addr(struct net *net) while ((msk = mptcp_token_iter_next(net, &s_slot, &s_num)) != NULL) { struct sock *sk = (struct sock *)msk; - if (!READ_ONCE(msk->fully_established)) + if (!READ_ONCE(msk->fully_established) || + mptcp_pm_is_userspace(msk)) goto next; lock_sock(sk); @@ -1363,6 +1364,9 @@ static int mptcp_nl_remove_subflow_and_signal_addr(struct net *net, struct sock *sk = (struct sock *)msk; bool remove_subflow; + if (mptcp_pm_is_userspace(msk)) + goto next; + if (list_empty(&msk->conn_list)) { mptcp_pm_remove_anno_addr(msk, addr, false); goto next; @@ -1397,7 +1401,7 @@ static int mptcp_nl_remove_id_zero_address(struct net *net, struct sock *sk = (struct sock *)msk; struct mptcp_addr_info msk_local; - if (list_empty(&msk->conn_list)) + if (list_empty(&msk->conn_list) || mptcp_pm_is_userspace(msk)) goto next; local_address((struct sock_common *)msk, &msk_local); @@ -1504,9 +1508,11 @@ static void mptcp_nl_remove_addrs_list(struct net *net, while ((msk = mptcp_token_iter_next(net, &s_slot, &s_num)) != NULL) { struct sock *sk = (struct sock *)msk; - lock_sock(sk); - mptcp_pm_remove_addrs_and_subflows(msk, rm_list); - release_sock(sk); + if (!mptcp_pm_is_userspace(msk)) { + lock_sock(sk); + mptcp_pm_remove_addrs_and_subflows(msk, rm_list); + release_sock(sk); + } sock_put(sk); cond_resched(); @@ -1779,7 +1785,7 @@ static int mptcp_nl_set_flags(struct net *net, while ((msk = mptcp_token_iter_next(net, &s_slot, &s_num)) != NULL) { struct sock *sk = (struct sock *)msk; - if (list_empty(&msk->conn_list)) + if (list_empty(&msk->conn_list) || mptcp_pm_is_userspace(msk)) goto next; lock_sock(sk); |