net: hsr: Fix node prune function for forget time expiry

HSR should forget nodes after configured node forget time expiry based
on HSR_NODE_FORGET_TIME. As part of hsr_prune_nodes(), code checks to
see if entries are to be flushed out if not heard for longer than forget
time. But currently hsr_prune_nodes() is called only once during device
creation. Restart the timer at the end of hsr_prune_nodes() so that
hsr_prune_nodes() gets called periodically and forgotten entries are
removed from node table.

Signed-off-by: Aaron Kramer <a-kramer@ti.com>
Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 insertions, 0 deletions

diff --git a/net/hsr/hsr_framereg.c b/net/hsr/hsr_framereg.c
index a3cc30ac8a5a..9fa9abd83018 100644
--- a/net/hsr/hsr_framereg.c
+++ b/net/hsr/hsr_framereg.c
@@ -405,6 +405,10 @@ void hsr_prune_nodes(struct timer_list *t)
                 }
         }
         rcu_read_unlock();
+
+        /* Restart timer */
+        mod_timer(&hsr->prune_timer,
+                  jiffies + msecs_to_jiffies(PRUNE_PERIOD));
 }
 
 void *hsr_get_next_node(struct hsr_priv *hsr, void *_pos,