[PATCH AUTOSEL 5.6 239/606] net/mlx5: Fix cleaning unmanaged flow tables
From: Sasha Levin <sashal@kernel.org>
Date: 2020-06-09 00:24:32
Also in:
linux-rdma, lkml, stable
Subsystem:
mellanox mlx5 core vpi driver, networking drivers, the rest · Maintainers:
Saeed Mahameed, Leon Romanovsky, Tariq Toukan, Mark Bloch, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
From: Roi Dayan <redacted>
[ Upstream commit aee37f3d940ca732df71c3df49347bccaafc0b24 ]
Unmanaged flow tables doesn't have a parent and tree_put_node()
assume there is always a parent if cleaning is needed. fix that.
Fixes: 5281a0c90919 ("net/mlx5: fs_core: Introduce unmanaged flow tables")
Signed-off-by: Roi Dayan <redacted>
Reviewed-by: Mark Bloch <redacted>
Reviewed-by: Paul Blakey <redacted>
Signed-off-by: Saeed Mahameed <redacted>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/ethernet/mellanox/mlx5/core/fs_core.c | 11 ++++++-----
1 file changed, 6 insertions(+), 5 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c b/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c
index 9dc24241dc91..cdc566768a07 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c@@ -323,14 +323,13 @@ static void tree_put_node(struct fs_node *node, bool locked) if (node->del_hw_func) node->del_hw_func(node); if (parent_node) { - /* Only root namespace doesn't have parent and we just - * need to free its node. - */ down_write_ref_node(parent_node, locked); list_del_init(&node->list); if (node->del_sw_func) node->del_sw_func(node); up_write_ref_node(parent_node, locked); + } else if (node->del_sw_func) { + node->del_sw_func(node); } else { kfree(node); }
@@ -447,8 +446,10 @@ static void del_sw_flow_table(struct fs_node *node) fs_get_obj(ft, node); rhltable_destroy(&ft->fgs_hash); - fs_get_obj(prio, ft->node.parent); - prio->num_ft--; + if (ft->node.parent) { + fs_get_obj(prio, ft->node.parent); + prio->num_ft--; + } kfree(ft); }
--
2.25.1