[patch net-next 4/5] mlxsw: spectrum_acl: Provide helper to lookup ruleset

[Jiri Pirko]

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

We need to lookup ruleset in order to offload goto_chain termination
action. This patch adds it.

Signed-off-by: Jiri Pirko <j...@mellanox.com>
---
 drivers/net/ethernet/mellanox/mlxsw/spectrum.h     |  4 ++
 drivers/net/ethernet/mellanox/mlxsw/spectrum_acl.c | 45 ++++++++++++++++++----
 2 files changed, 41 insertions(+), 8 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h 
b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
index 1866f69..f8c7f7e 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
@@ -441,6 +441,10 @@ struct mlxsw_sp_acl_ruleset;
 /* spectrum_acl.c */
 struct mlxsw_afk *mlxsw_sp_acl_afk(struct mlxsw_sp_acl *acl);
 struct mlxsw_sp_acl_ruleset *
+mlxsw_sp_acl_ruleset_lookup(struct mlxsw_sp *mlxsw_sp, struct net_device *dev,
+                           bool ingress, u32 chain_index,
+                           enum mlxsw_sp_acl_profile profile);
+struct mlxsw_sp_acl_ruleset *
 mlxsw_sp_acl_ruleset_get(struct mlxsw_sp *mlxsw_sp, struct net_device *dev,
                         bool ingress, u32 chain_index,
                         enum mlxsw_sp_acl_profile profile);
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl.c 
b/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl.c
index ef86f04..4b2455e 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl.c
@@ -221,6 +221,41 @@ static void mlxsw_sp_acl_ruleset_ref_dec(struct mlxsw_sp 
*mlxsw_sp,
        mlxsw_sp_acl_ruleset_destroy(mlxsw_sp, ruleset);
 }
 
+static struct mlxsw_sp_acl_ruleset *
+__mlxsw_sp_acl_ruleset_lookup(struct mlxsw_sp_acl *acl, struct net_device *dev,
+                             bool ingress, u32 chain_index,
+                             const struct mlxsw_sp_acl_profile_ops *ops)
+{
+       struct mlxsw_sp_acl_ruleset_ht_key ht_key;
+
+       memset(&ht_key, 0, sizeof(ht_key));
+       ht_key.dev = dev;
+       ht_key.ingress = ingress;
+       ht_key.chain_index = chain_index;
+       ht_key.ops = ops;
+       return rhashtable_lookup_fast(&acl->ruleset_ht, &ht_key,
+                                     mlxsw_sp_acl_ruleset_ht_params);
+}
+
+struct mlxsw_sp_acl_ruleset *
+mlxsw_sp_acl_ruleset_lookup(struct mlxsw_sp *mlxsw_sp, struct net_device *dev,
+                           bool ingress, u32 chain_index,
+                           enum mlxsw_sp_acl_profile profile)
+{
+       const struct mlxsw_sp_acl_profile_ops *ops;
+       struct mlxsw_sp_acl *acl = mlxsw_sp->acl;
+       struct mlxsw_sp_acl_ruleset *ruleset;
+
+       ops = acl->ops->profile_ops(mlxsw_sp, profile);
+       if (!ops)
+               return ERR_PTR(-EINVAL);
+       ruleset = __mlxsw_sp_acl_ruleset_lookup(acl, dev, ingress,
+                                               chain_index, ops);
+       if (!ruleset)
+               return ERR_PTR(-ENOENT);
+       return ruleset;
+}
+
 struct mlxsw_sp_acl_ruleset *
 mlxsw_sp_acl_ruleset_get(struct mlxsw_sp *mlxsw_sp, struct net_device *dev,
                         bool ingress, u32 chain_index,
@@ -228,7 +263,6 @@ mlxsw_sp_acl_ruleset_get(struct mlxsw_sp *mlxsw_sp, struct 
net_device *dev,
 {
        const struct mlxsw_sp_acl_profile_ops *ops;
        struct mlxsw_sp_acl *acl = mlxsw_sp->acl;
-       struct mlxsw_sp_acl_ruleset_ht_key ht_key;
        struct mlxsw_sp_acl_ruleset *ruleset;
        int err;
 
@@ -236,13 +270,8 @@ mlxsw_sp_acl_ruleset_get(struct mlxsw_sp *mlxsw_sp, struct 
net_device *dev,
        if (!ops)
                return ERR_PTR(-EINVAL);
 
-       memset(&ht_key, 0, sizeof(ht_key));
-       ht_key.dev = dev;
-       ht_key.ingress = ingress;
-       ht_key.chain_index = chain_index;
-       ht_key.ops = ops;
-       ruleset = rhashtable_lookup_fast(&acl->ruleset_ht, &ht_key,
-                                        mlxsw_sp_acl_ruleset_ht_params);
+       ruleset = __mlxsw_sp_acl_ruleset_lookup(acl, dev, ingress,
+                                               chain_index, ops);
        if (ruleset) {
                mlxsw_sp_acl_ruleset_ref_inc(ruleset);
                return ruleset;
-- 
2.9.3