net/mlx4_core: Fix wrong index in propagating port change event to VFs

[ Upstream commit 1c1bf34951e8d17941bf708d1901c47e81b15d55 ]

The port-change event processing in procedure mlx4_eq_int() uses "slave"
as the vf_oper array index. Since the value of "slave" is the PF function
index, the result is that the PF link state is used for deciding to
propagate the event for all the VFs. The VF link state should be used,
so the VF function index should be used here.

Fixes: 948e306d7d64 ('net/mlx4: Add VF link state support')
Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Matan Barak <matanb@mellanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/net/ethernet/mellanox/mlx4/eq.c b/drivers/net/ethernet/mellanox/mlx4/eq.c
index 8992b38578d5898ecaa9de19ee62e5079b1e8010..e8a1baa87c9551954d1aa7bf0b64bd30aca3e9ff 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx4/eq.c
+++ b/drivers/net/ethernet/mellanox/mlx4/eq.c
@@ -557,7 +557,7 @@ static int mlx4_eq_int(struct mlx4_dev *dev, struct mlx4_eq *eq)
                                                mlx4_dbg(dev, "%s: Sending MLX4_PORT_CHANGE_SUBTYPE_DOWN"
                                                         " to slave: %d, port:%d\n",
                                                         __func__, i, port);
-                                               s_info = &priv->mfunc.master.vf_oper[slave].vport[port].state;
+                                               s_info = &priv->mfunc.master.vf_oper[i].vport[port].state;
                                                if (IFLA_VF_LINK_STATE_AUTO == s_info->link_state)
                                                        mlx4_slave_event(dev, i, eqe);
                                        } else {  /* IB port */
@@ -583,7 +583,7 @@ static int mlx4_eq_int(struct mlx4_dev *dev, struct mlx4_eq *eq)
                                        for (i = 0; i < dev->num_slaves; i++) {
                                                if (i == mlx4_master_func_num(dev))
                                                        continue;
-                                               s_info = &priv->mfunc.master.vf_oper[slave].vport[port].state;
+                                               s_info = &priv->mfunc.master.vf_oper[i].vport[port].state;
                                                if (IFLA_VF_LINK_STATE_AUTO == s_info->link_state)
                                                        mlx4_slave_event(dev, i, eqe);
                                        }