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Diffstat (limited to 'net/mptcp/pm_netlink.c')
-rw-r--r--net/mptcp/pm_netlink.c19
1 files changed, 18 insertions, 1 deletions
diff --git a/net/mptcp/pm_netlink.c b/net/mptcp/pm_netlink.c
index f65831de5c1a..37954a0b087d 100644
--- a/net/mptcp/pm_netlink.c
+++ b/net/mptcp/pm_netlink.c
@@ -471,7 +471,6 @@ static void __mptcp_pm_send_ack(struct mptcp_sock *msk, struct mptcp_subflow_con
slow = lock_sock_fast(ssk);
if (prio) {
subflow->send_mp_prio = 1;
- subflow->backup = backup;
subflow->request_bkup = backup;
}
@@ -1102,6 +1101,24 @@ int mptcp_pm_nl_get_local_id(struct mptcp_sock *msk, struct mptcp_addr_info *skc
return ret;
}
+bool mptcp_pm_nl_is_backup(struct mptcp_sock *msk, struct mptcp_addr_info *skc)
+{
+ struct pm_nl_pernet *pernet = pm_nl_get_pernet_from_msk(msk);
+ struct mptcp_pm_addr_entry *entry;
+ bool backup = false;
+
+ rcu_read_lock();
+ list_for_each_entry_rcu(entry, &pernet->local_addr_list, list) {
+ if (mptcp_addresses_equal(&entry->addr, skc, entry->addr.port)) {
+ backup = !!(entry->flags & MPTCP_PM_ADDR_FLAG_BACKUP);
+ break;
+ }
+ }
+ rcu_read_unlock();
+
+ return backup;
+}
+
#define MPTCP_PM_CMD_GRP_OFFSET 0
#define MPTCP_PM_EV_GRP_OFFSET 1