[patch net-next 04/10] mlxsw: spectrum: Destroy RIFs based on last removed address

[Jiri Pirko]

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

We only use the RIF reference count to determine when the last IP
address was removed, but instead we can just test 'in_dev->ifa_list'.

Signed-off-by: Ido Schimmel <ido...@mellanox.com>
Signed-off-by: Jiri Pirko <j...@mellanox.com>
---
 drivers/net/ethernet/mellanox/mlxsw/spectrum.c | 7 +++----
 drivers/net/ethernet/mellanox/mlxsw/spectrum.h | 1 -
 2 files changed, 3 insertions(+), 5 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c 
b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
index fd6c40e..cb0e77a 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
@@ -3392,16 +3392,16 @@ void mlxsw_sp_port_dev_put(struct mlxsw_sp_port 
*mlxsw_sp_port)
 }
 
 static bool mlxsw_sp_rif_should_config(struct mlxsw_sp_rif *r,
+                                      const struct in_device *in_dev,
                                       unsigned long event)
 {
        switch (event) {
        case NETDEV_UP:
                if (!r)
                        return true;
-               r->ref_count++;
                return false;
        case NETDEV_DOWN:
-               if (r && --r->ref_count == 0)
+               if (r && !in_dev->ifa_list)
                        return true;
                /* It is possible we already removed the RIF ourselves
                 * if it was assigned to a netdev that is now a bridge
@@ -3484,7 +3484,6 @@ mlxsw_sp_rif_alloc(u16 rif, struct net_device *l3_dev, 
struct mlxsw_sp_fid *f)
        INIT_LIST_HEAD(&r->neigh_list);
        ether_addr_copy(r->addr, l3_dev->dev_addr);
        r->mtu = l3_dev->mtu;
-       r->ref_count = 1;
        r->dev = l3_dev;
        r->rif = rif;
        r->f = f;
@@ -3858,7 +3857,7 @@ static int mlxsw_sp_inetaddr_event(struct notifier_block 
*unused,
                goto out;
 
        r = mlxsw_sp_rif_find_by_dev(mlxsw_sp, dev);
-       if (!mlxsw_sp_rif_should_config(r, event))
+       if (!mlxsw_sp_rif_should_config(r, ifa->ifa_dev, event))
                goto out;
 
        if (mlxsw_sp_port_dev_check(dev))
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h 
b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
index ac445d8..7805430 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
@@ -111,7 +111,6 @@ struct mlxsw_sp_rif {
        struct list_head nexthop_list;
        struct list_head neigh_list;
        struct net_device *dev;
-       unsigned int ref_count;
        struct mlxsw_sp_fid *f;
        unsigned char addr[ETH_ALEN];
        int mtu;
-- 
2.7.4