[PATCH 2/3] rocker: set FDB cleanup timer according to lowest ageing time

[Stephen Hemminger]

From: Ido Schimmel <ido...@mellanox.com>

In rocker, ageing time is a per-port attribute, so the next time the FDB
cleanup timer fires should be set according to the lowest ageing time.

This will later allow us to delete the BR_MIN_AGEING_TIME macro, which was
added to guarantee minimum ageing time in the bridge layer, thereby breaking
existing behavior.

Signed-off-by: Ido Schimmel <ido...@mellanox.com>
---
 drivers/net/ethernet/rocker/rocker.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/rocker/rocker.c 
b/drivers/net/ethernet/rocker/rocker.c
index 166a7fc..19c65503 100644
--- a/drivers/net/ethernet/rocker/rocker.c
+++ b/drivers/net/ethernet/rocker/rocker.c
@@ -239,6 +239,7 @@ struct rocker {
        struct {
                u64 id;
        } hw;
+       unsigned long ageing_time;
        spinlock_t cmd_ring_lock;               /* for cmd ring accesses */
        struct rocker_dma_ring_info cmd_ring;
        struct rocker_dma_ring_info event_ring;
@@ -3704,7 +3705,7 @@ static void rocker_fdb_cleanup(unsigned long data)
        struct rocker_port *rocker_port;
        struct rocker_fdb_tbl_entry *entry;
        struct hlist_node *tmp;
-       unsigned long next_timer = jiffies + BR_MIN_AGEING_TIME;
+       unsigned long next_timer = jiffies + rocker->ageing_time;
        unsigned long expires;
        unsigned long lock_flags;
        int flags = ROCKER_OP_FLAG_NOWAIT | ROCKER_OP_FLAG_REMOVE |
@@ -4367,8 +4368,12 @@ static int rocker_port_bridge_ageing_time(struct 
rocker_port *rocker_port,
                                          struct switchdev_trans *trans,
                                          u32 ageing_time)
 {
+       struct rocker *rocker = rocker_port->rocker;
+
        if (!switchdev_trans_ph_prepare(trans)) {
                rocker_port->ageing_time = clock_t_to_jiffies(ageing_time);
+               if (rocker_port->ageing_time < rocker->ageing_time)
+                       rocker->ageing_time = rocker_port->ageing_time;
                mod_timer(&rocker_port->rocker->fdb_cleanup_timer, jiffies);
        }
 
@@ -5206,6 +5211,7 @@ static int rocker_probe(struct pci_dev *pdev, const 
struct pci_device_id *id)
                goto err_init_tbls;
        }
 
+       rocker->ageing_time = BR_DEFAULT_AGEING_TIME;
        setup_timer(&rocker->fdb_cleanup_timer, rocker_fdb_cleanup,
                    (unsigned long) rocker);
        mod_timer(&rocker->fdb_cleanup_timer, jiffies);
-- 
2.1.4