On Thu, Feb 8, 2024 at 1:50 PM <[email protected]> wrote:
>
> From: Numan Siddique <[email protected]>
>
> When the lflows in an lflow_ref are unlinked by calling
> lflow_ref_unlink_lflows(lflow_ref), the dp_ref counter
> for each lflow in the lflow_ref is decremented (by calling
> dp_refcnt_release()),  but it is not incremented later
> when the same lflow is linked back to the lflow_ref.
>
> This patch fixes it.
>
> Fixes: a623606052ea ("northd: Refactor lflow management into a separate
module.")
> Signed-off-by: Numan Siddique <[email protected]>
> ---
>  northd/lflow-mgr.c | 13 +++++++++----
>  1 file changed, 9 insertions(+), 4 deletions(-)
>
> diff --git a/northd/lflow-mgr.c b/northd/lflow-mgr.c
> index 61729e9039..df62cd6ab4 100644
> --- a/northd/lflow-mgr.c
> +++ b/northd/lflow-mgr.c
> @@ -690,19 +690,24 @@ lflow_table_add_lflow(struct lflow_table
*lflow_table,
>              if (lrn->dpgrp_lflow) {
>                  lrn->dpgrp_bitmap = bitmap_clone(dp_bitmap,
dp_bitmap_len);
>                  lrn->dpgrp_bitmap_len = dp_bitmap_len;
> +            } else {
> +                lrn->dp_index = od->index;
> +            }
> +            ovs_list_insert(&lflow->referenced_by, &lrn->ref_list_node);
> +            hmap_insert(&lflow_ref->lflow_ref_nodes, &lrn->ref_node,
hash);
> +        }
>
> +        if (!lrn->linked) {
> +            if (lrn->dpgrp_lflow) {
> +                ovs_assert(lrn->dpgrp_bitmap_len == dp_bitmap_len);
>                  size_t index;
>                  BITMAP_FOR_EACH_1 (index, dp_bitmap_len, dp_bitmap) {
>                      dp_refcnt_use(&lflow->dp_refcnts_map, index);
>                  }
>              } else {
> -                lrn->dp_index = od->index;
>                  dp_refcnt_use(&lflow->dp_refcnts_map, lrn->dp_index);
>              }
> -            ovs_list_insert(&lflow->referenced_by, &lrn->ref_list_node);
> -            hmap_insert(&lflow_ref->lflow_ref_nodes, &lrn->ref_node,
hash);
>          }
> -
>          lrn->linked = true;
>      }
>
> --
> 2.43.0
>
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Thanks Numan for the fix.
Acked-by: Han Zhou <[email protected]>
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