diff options
| author | Paolo Abeni <pabeni@redhat.com> | 2020-12-10 14:25:05 -0800 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2020-12-14 17:30:06 -0800 |
| commit | 1bc7327b5fea60328bf72cd702eca1defa2a5655 (patch) | |
| tree | f6ef59871ad5dc111775d7caa3a689ef4096f571 | |
| parent | 50c504a20a754ca37b5e1f4e660cd687769a7dca (diff) | |
mptcp: pm: simplify select_local_address()
There is no need to unconditionally acquire the join list
lock, we can simply splice the join list into the subflow
list and traverse only the latter.
Signed-off-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>
| -rw-r--r-- | net/mptcp/pm_netlink.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/net/mptcp/pm_netlink.c b/net/mptcp/pm_netlink.c index 9cc4eefaf080..a6d983d80576 100644 --- a/net/mptcp/pm_netlink.c +++ b/net/mptcp/pm_netlink.c @@ -135,7 +135,7 @@ select_local_address(const struct pm_nl_pernet *pernet, struct mptcp_pm_addr_entry *entry, *ret = NULL; rcu_read_lock(); - spin_lock_bh(&msk->join_list_lock); + __mptcp_flush_join_list(msk); list_for_each_entry_rcu(entry, &pernet->local_addr_list, list) { if (!(entry->addr.flags & MPTCP_PM_ADDR_FLAG_SUBFLOW)) continue; @@ -144,13 +144,11 @@ select_local_address(const struct pm_nl_pernet *pernet, * pending join */ if (entry->addr.family == ((struct sock *)msk)->sk_family && - !lookup_subflow_by_saddr(&msk->conn_list, &entry->addr) && - !lookup_subflow_by_saddr(&msk->join_list, &entry->addr)) { + !lookup_subflow_by_saddr(&msk->conn_list, &entry->addr)) { ret = entry; break; } } - spin_unlock_bh(&msk->join_list_lock); rcu_read_unlock(); return ret; } |