[PATCH net-next 07/14] mlxsw: spectrum_acl: assign vchunk->chunk by the newly created chunk

[Ido Schimmel]

From: Jiri Pirko <j...@mellanox.com>

Make the vchunk->chunk contain pointer of a new chunk we migrate to.
In case of a rollback, it contains the original chunk.

Signed-off-by: Jiri Pirko <j...@mellanox.com>
Signed-off-by: Ido Schimmel <ido...@mellanox.com>
---
 .../mellanox/mlxsw/spectrum_acl_tcam.c         | 18 ++++++++++--------
 1 file changed, 10 insertions(+), 8 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_tcam.c 
b/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_tcam.c
index 72734ee60a1e..6a50266b6809 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_tcam.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_tcam.c
@@ -1197,21 +1197,23 @@ mlxsw_sp_acl_tcam_vchunk_migrate_one(struct mlxsw_sp 
*mlxsw_sp,
                                     struct mlxsw_sp_acl_tcam_region *region,
                                     bool this_is_rollback)
 {
+       struct mlxsw_sp_acl_tcam_chunk *new_chunk;
        struct mlxsw_sp_acl_tcam_ventry *ventry;
-       struct mlxsw_sp_acl_tcam_chunk *chunk2;
        int err;
        int err2;
 
-       chunk2 = mlxsw_sp_acl_tcam_chunk_create(mlxsw_sp, vchunk, region);
-       if (IS_ERR(chunk2)) {
+       new_chunk = mlxsw_sp_acl_tcam_chunk_create(mlxsw_sp, vchunk, region);
+       if (IS_ERR(new_chunk)) {
                if (this_is_rollback)
                        vchunk->vregion->failed_rollback = true;
-               return PTR_ERR(chunk2);
+               return PTR_ERR(new_chunk);
        }
-       vchunk->chunk2 = chunk2;
+       vchunk->chunk2 = vchunk->chunk;
+       vchunk->chunk = new_chunk;
+
        list_for_each_entry(ventry, &vchunk->ventry_list, list) {
                err = mlxsw_sp_acl_tcam_ventry_migrate(mlxsw_sp, ventry,
-                                                      vchunk->chunk2);
+                                                      vchunk->chunk);
                if (err) {
                        if (this_is_rollback) {
                                vchunk->vregion->failed_rollback = true;
@@ -1220,8 +1222,7 @@ mlxsw_sp_acl_tcam_vchunk_migrate_one(struct mlxsw_sp 
*mlxsw_sp,
                        goto rollback;
                }
        }
-       mlxsw_sp_acl_tcam_chunk_destroy(mlxsw_sp, vchunk->chunk);
-       vchunk->chunk = chunk2;
+       mlxsw_sp_acl_tcam_chunk_destroy(mlxsw_sp, vchunk->chunk2);
        vchunk->chunk2 = NULL;
        return 0;
 
@@ -1230,6 +1231,7 @@ mlxsw_sp_acl_tcam_vchunk_migrate_one(struct mlxsw_sp 
*mlxsw_sp,
         * migration fails, there's no good way how to proceed. Set the
         * vregion with "failed_rollback" flag.
         */
+       swap(vchunk->chunk, vchunk->chunk2);
        list_for_each_entry_continue_reverse(ventry, &vchunk->ventry_list,
                                             list) {
                err2 = mlxsw_sp_acl_tcam_ventry_migrate(mlxsw_sp, ventry,
-- 
2.20.1