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net/mlx5: Fix create autogroup prev initializer

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[ Upstream commit af36370569 ]

The autogroups list is a list of non overlapping group boundaries
sorted by their start index. If the autogroups list wasn't empty
and an empty group slot was found at the start of the list,
the new group was added to the end of the list instead of the
beginning, as the prev initializer was incorrect.
When this was repeated, it caused multiple groups to have
overlapping boundaries.

Fixed that by correctly initializing the prev pointer to the
start of the list.

Fixes: eccec8da3b ('net/mlx5: Keep autogroups list ordered')
Signed-off-by: Paul Blakey <paulb@mellanox.com>
Reviewed-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Paul Blakey
2017-03-10 14:33:01 +02:00
committed by Greg Kroah-Hartman
parent 515d78dc0a
commit 248cbd97be
1 changed files with 1 additions and 1 deletions
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2
drivers/net/ethernet/mellanox/mlx5/core/fs_core.c
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@@ -1015,7 +1015,7 @@ static struct mlx5_flow_group *create_autogroup(struct mlx5_flow_table *ft,
u32 *match_criteria)
{
int inlen = MLX5_ST_SZ_BYTES(create_flow_group_in);
struct list_head *prev = ft->node.children.prev;
struct list_head *prev = &ft->node.children;
unsigned int candidate_index = 0;
struct mlx5_flow_group *fg;
void *match_criteria_addr;