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net/mlx5: Fix multiple updates of steering rules in parallel

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[ Upstream commit 6237634d8f ]

There might be a condition where the fte found is not active yet. In
this case we should not use it, but continue to search for another, or
allocate a new one.

Fixes: bd71b08ec2 ("net/mlx5: Support multiple updates of steering rules in parallel")
Signed-off-by: Eli Britstein <elibr@mellanox.com>
Reviewed-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Eli Britstein 2019-01-31 14:56:01 +02:00 committed by Greg Kroah-Hartman
parent a663874605
commit d6e970b198
1 changed files with 6 additions and 0 deletions
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6
drivers/net/ethernet/mellanox/mlx5/core/fs_core.c
View file

@ -469,6 +469,7 @@ static void del_hw_fte(struct fs_node *node)
mlx5_core_warn(dev,
"flow steering can't delete fte in index %d of flow group id %d\n",
fte->index, fg->id);
node->active = 0;
}
}
@ -1597,6 +1598,11 @@ lookup_fte_locked(struct mlx5_flow_group *g,
fte_tmp = NULL;
goto out;
}
if (!fte_tmp->node.active) {
tree_put_node(&fte_tmp->node);
fte_tmp = NULL;
goto out;
}
nested_down_write_ref_node(&fte_tmp->node, FS_LOCK_CHILD);
out: