diff options
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); |