diff options
| author | Geliang Tang <geliangtang@gmail.com> | 2021-02-02 00:09:07 +0100 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2021-02-03 03:37:18 +0100 |
| commit | a914e586689f2b322e7b923eb9ea8894fc80d5ec (patch) | |
| tree | d453bf56bf0d2501e16711af3082753a51f5ec4a /net/mptcp/pm.c | |
| parent | mptcp: use WRITE_ONCE for the pernet *_max (diff) | |
| download | linux-a914e586689f2b322e7b923eb9ea8894fc80d5ec.tar.xz linux-a914e586689f2b322e7b923eb9ea8894fc80d5ec.zip | |
mptcp: drop *_max fields in mptcp_pm_data
This patch drops the per-msk values add_addr_signal_max,
add_addr_accept_max, local_addr_max and subflows_max fields in struct
mptcp_pm_data, uses the pernet *_max values instead. And adds four new
helpers to get the pernet *_max values separately.
Co-developed-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Geliang Tang <geliangtang@gmail.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.c')
| -rw-r--r-- | net/mptcp/pm.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/net/mptcp/pm.c b/net/mptcp/pm.c index 0a6ebd0642ec..01a846b25771 100644 --- a/net/mptcp/pm.c +++ b/net/mptcp/pm.c @@ -78,10 +78,13 @@ void mptcp_pm_new_connection(struct mptcp_sock *msk, int server_side) bool mptcp_pm_allow_new_subflow(struct mptcp_sock *msk) { struct mptcp_pm_data *pm = &msk->pm; + unsigned int subflows_max; int ret = 0; + subflows_max = mptcp_pm_get_subflows_max(msk); + pr_debug("msk=%p subflows=%d max=%d allow=%d", msk, pm->subflows, - pm->subflows_max, READ_ONCE(pm->accept_subflow)); + subflows_max, READ_ONCE(pm->accept_subflow)); /* try to avoid acquiring the lock below */ if (!READ_ONCE(pm->accept_subflow)) @@ -89,8 +92,8 @@ bool mptcp_pm_allow_new_subflow(struct mptcp_sock *msk) spin_lock_bh(&pm->lock); if (READ_ONCE(pm->accept_subflow)) { - ret = pm->subflows < pm->subflows_max; - if (ret && ++pm->subflows == pm->subflows_max) + ret = pm->subflows < subflows_max; + if (ret && ++pm->subflows == subflows_max) WRITE_ONCE(pm->accept_subflow, false); } spin_unlock_bh(&pm->lock); |