From 178d23e3cd4811ebe702d60ac31e8bee389a5847 Mon Sep 17 00:00:00 2001
From: Or Gerlitz <ogerlitz@mellanox.com>
Date: Wed, 22 Jul 2015 16:53:46 +0300
Subject: [PATCH] net/mlx4_core: Use sink counter for the VF default as
fallback
Some old PF drivers don't let VFs allocate counters, in that case, use
the sink counter so the VF can load and operate properly.
Fixes: 6de5f7f6a1fa ('net/mlx4_core: Allocate default counter per port')
Reported-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/ethernet/mellanox/mlx4/main.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/net/ethernet/mellanox/mlx4/main.c b/drivers/net/ethernet/mellanox/mlx4/main.c
index 12fbfcb44d8a..29c2a017a450 100644
--- a/drivers/net/ethernet/mellanox/mlx4/main.c
+++ b/drivers/net/ethernet/mellanox/mlx4/main.c
@@ -2273,6 +2273,11 @@ static int mlx4_allocate_default_counters(struct mlx4_dev *dev)
} else if (err == -ENOENT) {
err = 0;
continue;
+ } else if (mlx4_is_slave(dev) && err == -EINVAL) {
+ priv->def_counter[port] = MLX4_SINK_COUNTER_INDEX(dev);
+ mlx4_warn(dev, "can't allocate counter from old PF driver, using index %d\n",
+ MLX4_SINK_COUNTER_INDEX(dev));
+ err = 0;
} else {
mlx4_err(dev, "%s: failed to allocate default counter port %d err %d\n",
__func__, port + 1, err);
--
2.30.2