Quelle  spectrum1_acl_tcam.c   Sprache: C

// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/* Copyright (c) 2017-2018 Mellanox Technologies. All rights reserved */

#include <linux/kernel.h>
#include <linux/slab.h>

#include "reg.h"
#include "core.h"
#include "spectrum.h"
#include "spectrum_acl_tcam.h"

struct mlxsw_sp1_acl_tcam_region {
 struct mlxsw_sp_acl_ctcam_region cregion;
 struct mlxsw_sp_acl_tcam_region *region;
 struct {
  struct mlxsw_sp_acl_ctcam_chunk cchunk;
  struct mlxsw_sp_acl_ctcam_entry centry;
  struct mlxsw_sp_acl_rule_info *rulei;
 } catchall;
};

struct mlxsw_sp1_acl_tcam_chunk {
 struct mlxsw_sp_acl_ctcam_chunk cchunk;
};

struct mlxsw_sp1_acl_tcam_entry {
 struct mlxsw_sp_acl_ctcam_entry centry;
};

static int
mlxsw_sp1_acl_ctcam_region_entry_insert(struct mlxsw_sp_acl_ctcam_region *cregion,
     struct mlxsw_sp_acl_ctcam_entry *centry,
     const char *mask)
{
 return 0;
}

static void
mlxsw_sp1_acl_ctcam_region_entry_remove(struct mlxsw_sp_acl_ctcam_region *cregion,
     struct mlxsw_sp_acl_ctcam_entry *centry)
{
}

static const struct mlxsw_sp_acl_ctcam_region_ops
mlxsw_sp1_acl_ctcam_region_ops = {
 .entry_insert = mlxsw_sp1_acl_ctcam_region_entry_insert,
 .entry_remove = mlxsw_sp1_acl_ctcam_region_entry_remove,
};

static int mlxsw_sp1_acl_tcam_init(struct mlxsw_sp *mlxsw_sp, void *priv,
       struct mlxsw_sp_acl_tcam *tcam)
{
 return 0;
}

static void mlxsw_sp1_acl_tcam_fini(struct mlxsw_sp *mlxsw_sp, void *priv)
{
}

static int
mlxsw_sp1_acl_ctcam_region_catchall_add(struct mlxsw_sp *mlxsw_sp,
     struct mlxsw_sp1_acl_tcam_region *region)
{
 struct mlxsw_sp_acl_rule_info *rulei;
 int err;

 mlxsw_sp_acl_ctcam_chunk_init(®ion->cregion,
          ®ion->catchall.cchunk,
          MLXSW_SP_ACL_TCAM_CATCHALL_PRIO);
 rulei = mlxsw_sp_acl_rulei_create(mlxsw_sp->acl, NULL);
 if (IS_ERR(rulei)) {
  err = PTR_ERR(rulei);
  goto err_rulei_create;
 }
 err = mlxsw_sp_acl_rulei_act_continue(rulei);
 if (WARN_ON(err))
  goto err_rulei_act_continue;
 err = mlxsw_sp_acl_rulei_commit(rulei);
 if (err)
  goto err_rulei_commit;
 err = mlxsw_sp_acl_ctcam_entry_add(mlxsw_sp, ®ion->cregion,
        ®ion->catchall.cchunk,
        ®ion->catchall.centry,
        rulei, false);
 if (err)
  goto err_entry_add;
 region->catchall.rulei = rulei;
 return 0;

err_entry_add:
err_rulei_commit:
err_rulei_act_continue:
 mlxsw_sp_acl_rulei_destroy(mlxsw_sp, rulei);
err_rulei_create:
 mlxsw_sp_acl_ctcam_chunk_fini(®ion->catchall.cchunk);
 return err;
}

static void
mlxsw_sp1_acl_ctcam_region_catchall_del(struct mlxsw_sp *mlxsw_sp,
     struct mlxsw_sp1_acl_tcam_region *region)
{
 struct mlxsw_sp_acl_rule_info *rulei = region->catchall.rulei;

 mlxsw_sp_acl_ctcam_entry_del(mlxsw_sp, ®ion->cregion,
         ®ion->catchall.cchunk,
         ®ion->catchall.centry);
 mlxsw_sp_acl_rulei_destroy(mlxsw_sp, rulei);
 mlxsw_sp_acl_ctcam_chunk_fini(®ion->catchall.cchunk);
}

static int
mlxsw_sp1_acl_tcam_region_init(struct mlxsw_sp *mlxsw_sp, void *region_priv,
          void *tcam_priv,
          struct mlxsw_sp_acl_tcam_region *_region,
          void *hints_priv)
{
 struct mlxsw_sp1_acl_tcam_region *region = region_priv;
 int err;

 err = mlxsw_sp_acl_ctcam_region_init(mlxsw_sp, ®ion->cregion,
          _region,
          &mlxsw_sp1_acl_ctcam_region_ops);
 if (err)
  return err;
 err = mlxsw_sp1_acl_ctcam_region_catchall_add(mlxsw_sp, region);
 if (err)
  goto err_catchall_add;
 region->region = _region;
 return 0;

err_catchall_add:
 mlxsw_sp_acl_ctcam_region_fini(®ion->cregion);
 return err;
}

static void
mlxsw_sp1_acl_tcam_region_fini(struct mlxsw_sp *mlxsw_sp, void *region_priv)
{
 struct mlxsw_sp1_acl_tcam_region *region = region_priv;

 mlxsw_sp1_acl_ctcam_region_catchall_del(mlxsw_sp, region);
 mlxsw_sp_acl_ctcam_region_fini(®ion->cregion);
}

static int
mlxsw_sp1_acl_tcam_region_associate(struct mlxsw_sp *mlxsw_sp,
        struct mlxsw_sp_acl_tcam_region *region)
{
 return 0;
}

static void mlxsw_sp1_acl_tcam_chunk_init(void *region_priv, void *chunk_priv,
       unsigned int priority)
{
 struct mlxsw_sp1_acl_tcam_region *region = region_priv;
 struct mlxsw_sp1_acl_tcam_chunk *chunk = chunk_priv;

 mlxsw_sp_acl_ctcam_chunk_init(®ion->cregion, &chunk->cchunk,
          priority);
}

static void mlxsw_sp1_acl_tcam_chunk_fini(void *chunk_priv)
{
 struct mlxsw_sp1_acl_tcam_chunk *chunk = chunk_priv;

 mlxsw_sp_acl_ctcam_chunk_fini(&chunk->cchunk);
}

static int mlxsw_sp1_acl_tcam_entry_add(struct mlxsw_sp *mlxsw_sp,
     void *region_priv, void *chunk_priv,
     void *entry_priv,
     struct mlxsw_sp_acl_rule_info *rulei)
{
 struct mlxsw_sp1_acl_tcam_region *region = region_priv;
 struct mlxsw_sp1_acl_tcam_chunk *chunk = chunk_priv;
 struct mlxsw_sp1_acl_tcam_entry *entry = entry_priv;

 return mlxsw_sp_acl_ctcam_entry_add(mlxsw_sp, ®ion->cregion,
         &chunk->cchunk, &entry->centry,
         rulei, false);
}

static void mlxsw_sp1_acl_tcam_entry_del(struct mlxsw_sp *mlxsw_sp,
      void *region_priv, void *chunk_priv,
      void *entry_priv)
{
 struct mlxsw_sp1_acl_tcam_region *region = region_priv;
 struct mlxsw_sp1_acl_tcam_chunk *chunk = chunk_priv;
 struct mlxsw_sp1_acl_tcam_entry *entry = entry_priv;

 mlxsw_sp_acl_ctcam_entry_del(mlxsw_sp, ®ion->cregion,
         &chunk->cchunk, &entry->centry);
}

static int
mlxsw_sp1_acl_tcam_entry_action_replace(struct mlxsw_sp *mlxsw_sp,
     void *region_priv, void *entry_priv,
     struct mlxsw_sp_acl_rule_info *rulei)
{
 return -EOPNOTSUPP;
}

static int
mlxsw_sp1_acl_tcam_region_entry_activity_get(struct mlxsw_sp *mlxsw_sp,
          struct mlxsw_sp_acl_tcam_region *_region,
          unsigned int offset,
          bool *activity)
{
 char ptce2_pl[MLXSW_REG_PTCE2_LEN];
 int err;

 mlxsw_reg_ptce2_pack(ptce2_pl, true, MLXSW_REG_PTCE2_OP_QUERY_CLEAR_ON_READ,
        _region->tcam_region_info, offset, 0);
 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ptce2), ptce2_pl);
 if (err)
  return err;
 *activity = mlxsw_reg_ptce2_a_get(ptce2_pl);
 return 0;
}

static int
mlxsw_sp1_acl_tcam_entry_activity_get(struct mlxsw_sp *mlxsw_sp,
          void *region_priv, void *entry_priv,
          bool *activity)
{
 struct mlxsw_sp1_acl_tcam_region *region = region_priv;
 struct mlxsw_sp1_acl_tcam_entry *entry = entry_priv;
 unsigned int offset;

 offset = mlxsw_sp_acl_ctcam_entry_offset(&entry->centry);
 return mlxsw_sp1_acl_tcam_region_entry_activity_get(mlxsw_sp,
           region->region,
           offset, activity);
}

const struct mlxsw_sp_acl_tcam_ops mlxsw_sp1_acl_tcam_ops = {
 .key_type  = MLXSW_REG_PTAR_KEY_TYPE_FLEX,
 .priv_size  = 0,
 .init   = mlxsw_sp1_acl_tcam_init,
 .fini   = mlxsw_sp1_acl_tcam_fini,
 .region_priv_size = sizeof(struct mlxsw_sp1_acl_tcam_region),
 .region_init  = mlxsw_sp1_acl_tcam_region_init,
 .region_fini  = mlxsw_sp1_acl_tcam_region_fini,
 .region_associate = mlxsw_sp1_acl_tcam_region_associate,
 .chunk_priv_size = sizeof(struct mlxsw_sp1_acl_tcam_chunk),
 .chunk_init  = mlxsw_sp1_acl_tcam_chunk_init,
 .chunk_fini  = mlxsw_sp1_acl_tcam_chunk_fini,
 .entry_priv_size = sizeof(struct mlxsw_sp1_acl_tcam_entry),
 .entry_add  = mlxsw_sp1_acl_tcam_entry_add,
 .entry_del  = mlxsw_sp1_acl_tcam_entry_del,
 .entry_action_replace = mlxsw_sp1_acl_tcam_entry_action_replace,
 .entry_activity_get = mlxsw_sp1_acl_tcam_entry_activity_get,
};