From: Eli Cohen <eli@mellanox.com>
Date: Wed, 4 Mar 2020 10:32:56 +0200
Subject: net/mlx5: Fix group version management
Patch-mainline: v5.7-rc1
Git-commit: 454401aeb2957e0d996bc9208b78aa4d8ac12964
References: jsc#SLE-15172

When adding a rule to a flow group we need increment the version of the
group. Current code fails to do that and as a result, when trying to add
a rule, we will fail to discover a case where an FTE with the same match
value was added while we scanned the groups of the same match criteria,
thus we may try to add an FTE that was already added.

Signed-off-by: Eli Cohen <eli@mellanox.com>
Reviewed-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/net/ethernet/mellanox/mlx5/core/fs_core.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c
@@ -1323,6 +1323,7 @@ add_rule_fte(struct fs_fte *fte,
 	fte->node.active = true;
 	fte->status |= FS_FTE_STATUS_EXISTING;
 	atomic_inc(&fte->node.version);
+	atomic_inc(&fg->node.version);
 
 out:
 	return handle;