649 lines
20 KiB
C
649 lines
20 KiB
C
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// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
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/* Copyright (c) 2018 Mellanox Technologies. All rights reserved */
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#include <linux/kernel.h>
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#include <linux/err.h>
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#include <linux/errno.h>
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#include <linux/gfp.h>
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#include <linux/refcount.h>
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#include <linux/rhashtable.h>
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#define CREATE_TRACE_POINTS
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#include <trace/events/mlxsw.h>
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#include "reg.h"
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#include "core.h"
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#include "spectrum.h"
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#include "spectrum_acl_tcam.h"
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#include "core_acl_flex_keys.h"
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#define MLXSW_SP_ACL_ATCAM_LKEY_ID_BLOCK_CLEAR_START 0
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#define MLXSW_SP_ACL_ATCAM_LKEY_ID_BLOCK_CLEAR_END 5
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struct mlxsw_sp_acl_atcam_lkey_id_ht_key {
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char enc_key[MLXSW_REG_PTCEX_FLEX_KEY_BLOCKS_LEN]; /* MSB blocks */
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u8 erp_id;
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};
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struct mlxsw_sp_acl_atcam_lkey_id {
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struct rhash_head ht_node;
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struct mlxsw_sp_acl_atcam_lkey_id_ht_key ht_key;
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refcount_t refcnt;
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u32 id;
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};
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struct mlxsw_sp_acl_atcam_region_ops {
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int (*init)(struct mlxsw_sp_acl_atcam_region *aregion);
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void (*fini)(struct mlxsw_sp_acl_atcam_region *aregion);
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struct mlxsw_sp_acl_atcam_lkey_id *
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(*lkey_id_get)(struct mlxsw_sp_acl_atcam_region *aregion,
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char *enc_key, u8 erp_id);
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void (*lkey_id_put)(struct mlxsw_sp_acl_atcam_region *aregion,
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struct mlxsw_sp_acl_atcam_lkey_id *lkey_id);
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};
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struct mlxsw_sp_acl_atcam_region_generic {
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struct mlxsw_sp_acl_atcam_lkey_id dummy_lkey_id;
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};
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struct mlxsw_sp_acl_atcam_region_12kb {
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struct rhashtable lkey_ht;
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unsigned int max_lkey_id;
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unsigned long *used_lkey_id;
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};
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static const struct rhashtable_params mlxsw_sp_acl_atcam_lkey_id_ht_params = {
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.key_len = sizeof(struct mlxsw_sp_acl_atcam_lkey_id_ht_key),
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.key_offset = offsetof(struct mlxsw_sp_acl_atcam_lkey_id, ht_key),
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.head_offset = offsetof(struct mlxsw_sp_acl_atcam_lkey_id, ht_node),
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};
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static const struct rhashtable_params mlxsw_sp_acl_atcam_entries_ht_params = {
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.key_len = sizeof(struct mlxsw_sp_acl_atcam_entry_ht_key),
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.key_offset = offsetof(struct mlxsw_sp_acl_atcam_entry, ht_key),
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.head_offset = offsetof(struct mlxsw_sp_acl_atcam_entry, ht_node),
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};
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static bool
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mlxsw_sp_acl_atcam_is_centry(const struct mlxsw_sp_acl_atcam_entry *aentry)
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{
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return mlxsw_sp_acl_erp_mask_is_ctcam(aentry->erp_mask);
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}
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static int
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mlxsw_sp_acl_atcam_region_generic_init(struct mlxsw_sp_acl_atcam_region *aregion)
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{
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struct mlxsw_sp_acl_atcam_region_generic *region_generic;
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region_generic = kzalloc(sizeof(*region_generic), GFP_KERNEL);
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if (!region_generic)
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return -ENOMEM;
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refcount_set(®ion_generic->dummy_lkey_id.refcnt, 1);
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aregion->priv = region_generic;
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return 0;
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}
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static void
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mlxsw_sp_acl_atcam_region_generic_fini(struct mlxsw_sp_acl_atcam_region *aregion)
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{
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kfree(aregion->priv);
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}
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static struct mlxsw_sp_acl_atcam_lkey_id *
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mlxsw_sp_acl_atcam_generic_lkey_id_get(struct mlxsw_sp_acl_atcam_region *aregion,
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char *enc_key, u8 erp_id)
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{
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struct mlxsw_sp_acl_atcam_region_generic *region_generic;
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region_generic = aregion->priv;
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return ®ion_generic->dummy_lkey_id;
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}
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static void
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mlxsw_sp_acl_atcam_generic_lkey_id_put(struct mlxsw_sp_acl_atcam_region *aregion,
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struct mlxsw_sp_acl_atcam_lkey_id *lkey_id)
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{
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}
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static const struct mlxsw_sp_acl_atcam_region_ops
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mlxsw_sp_acl_atcam_region_generic_ops = {
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.init = mlxsw_sp_acl_atcam_region_generic_init,
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.fini = mlxsw_sp_acl_atcam_region_generic_fini,
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.lkey_id_get = mlxsw_sp_acl_atcam_generic_lkey_id_get,
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.lkey_id_put = mlxsw_sp_acl_atcam_generic_lkey_id_put,
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};
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static int
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mlxsw_sp_acl_atcam_region_12kb_init(struct mlxsw_sp_acl_atcam_region *aregion)
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{
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struct mlxsw_sp *mlxsw_sp = aregion->region->mlxsw_sp;
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struct mlxsw_sp_acl_atcam_region_12kb *region_12kb;
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size_t alloc_size;
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u64 max_lkey_id;
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int err;
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if (!MLXSW_CORE_RES_VALID(mlxsw_sp->core, ACL_MAX_LARGE_KEY_ID))
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return -EIO;
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max_lkey_id = MLXSW_CORE_RES_GET(mlxsw_sp->core, ACL_MAX_LARGE_KEY_ID);
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region_12kb = kzalloc(sizeof(*region_12kb), GFP_KERNEL);
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if (!region_12kb)
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return -ENOMEM;
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alloc_size = BITS_TO_LONGS(max_lkey_id) * sizeof(unsigned long);
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region_12kb->used_lkey_id = kzalloc(alloc_size, GFP_KERNEL);
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if (!region_12kb->used_lkey_id) {
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err = -ENOMEM;
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goto err_used_lkey_id_alloc;
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}
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err = rhashtable_init(®ion_12kb->lkey_ht,
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&mlxsw_sp_acl_atcam_lkey_id_ht_params);
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if (err)
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goto err_rhashtable_init;
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region_12kb->max_lkey_id = max_lkey_id;
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aregion->priv = region_12kb;
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return 0;
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err_rhashtable_init:
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kfree(region_12kb->used_lkey_id);
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err_used_lkey_id_alloc:
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kfree(region_12kb);
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return err;
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}
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static void
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mlxsw_sp_acl_atcam_region_12kb_fini(struct mlxsw_sp_acl_atcam_region *aregion)
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{
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struct mlxsw_sp_acl_atcam_region_12kb *region_12kb = aregion->priv;
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rhashtable_destroy(®ion_12kb->lkey_ht);
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kfree(region_12kb->used_lkey_id);
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kfree(region_12kb);
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}
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static struct mlxsw_sp_acl_atcam_lkey_id *
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mlxsw_sp_acl_atcam_lkey_id_create(struct mlxsw_sp_acl_atcam_region *aregion,
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struct mlxsw_sp_acl_atcam_lkey_id_ht_key *ht_key)
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{
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struct mlxsw_sp_acl_atcam_region_12kb *region_12kb = aregion->priv;
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struct mlxsw_sp_acl_atcam_lkey_id *lkey_id;
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u32 id;
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int err;
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id = find_first_zero_bit(region_12kb->used_lkey_id,
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region_12kb->max_lkey_id);
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if (id < region_12kb->max_lkey_id)
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__set_bit(id, region_12kb->used_lkey_id);
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else
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return ERR_PTR(-ENOBUFS);
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lkey_id = kzalloc(sizeof(*lkey_id), GFP_KERNEL);
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if (!lkey_id) {
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err = -ENOMEM;
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goto err_lkey_id_alloc;
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}
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lkey_id->id = id;
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memcpy(&lkey_id->ht_key, ht_key, sizeof(*ht_key));
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refcount_set(&lkey_id->refcnt, 1);
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err = rhashtable_insert_fast(®ion_12kb->lkey_ht,
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&lkey_id->ht_node,
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mlxsw_sp_acl_atcam_lkey_id_ht_params);
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if (err)
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goto err_rhashtable_insert;
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return lkey_id;
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err_rhashtable_insert:
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kfree(lkey_id);
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err_lkey_id_alloc:
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__clear_bit(id, region_12kb->used_lkey_id);
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return ERR_PTR(err);
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}
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static void
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mlxsw_sp_acl_atcam_lkey_id_destroy(struct mlxsw_sp_acl_atcam_region *aregion,
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struct mlxsw_sp_acl_atcam_lkey_id *lkey_id)
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{
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struct mlxsw_sp_acl_atcam_region_12kb *region_12kb = aregion->priv;
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u32 id = lkey_id->id;
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rhashtable_remove_fast(®ion_12kb->lkey_ht, &lkey_id->ht_node,
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mlxsw_sp_acl_atcam_lkey_id_ht_params);
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kfree(lkey_id);
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__clear_bit(id, region_12kb->used_lkey_id);
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}
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static struct mlxsw_sp_acl_atcam_lkey_id *
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mlxsw_sp_acl_atcam_12kb_lkey_id_get(struct mlxsw_sp_acl_atcam_region *aregion,
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char *enc_key, u8 erp_id)
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{
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struct mlxsw_sp_acl_atcam_region_12kb *region_12kb = aregion->priv;
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struct mlxsw_sp_acl_tcam_region *region = aregion->region;
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struct mlxsw_sp_acl_atcam_lkey_id_ht_key ht_key = {{ 0 } };
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struct mlxsw_sp *mlxsw_sp = region->mlxsw_sp;
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struct mlxsw_afk *afk = mlxsw_sp_acl_afk(mlxsw_sp->acl);
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struct mlxsw_sp_acl_atcam_lkey_id *lkey_id;
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memcpy(ht_key.enc_key, enc_key, sizeof(ht_key.enc_key));
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mlxsw_afk_clear(afk, ht_key.enc_key,
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MLXSW_SP_ACL_ATCAM_LKEY_ID_BLOCK_CLEAR_START,
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MLXSW_SP_ACL_ATCAM_LKEY_ID_BLOCK_CLEAR_END);
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ht_key.erp_id = erp_id;
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lkey_id = rhashtable_lookup_fast(®ion_12kb->lkey_ht, &ht_key,
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mlxsw_sp_acl_atcam_lkey_id_ht_params);
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if (lkey_id) {
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refcount_inc(&lkey_id->refcnt);
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return lkey_id;
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}
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return mlxsw_sp_acl_atcam_lkey_id_create(aregion, &ht_key);
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}
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static void
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mlxsw_sp_acl_atcam_12kb_lkey_id_put(struct mlxsw_sp_acl_atcam_region *aregion,
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struct mlxsw_sp_acl_atcam_lkey_id *lkey_id)
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{
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if (refcount_dec_and_test(&lkey_id->refcnt))
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mlxsw_sp_acl_atcam_lkey_id_destroy(aregion, lkey_id);
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}
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static const struct mlxsw_sp_acl_atcam_region_ops
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mlxsw_sp_acl_atcam_region_12kb_ops = {
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.init = mlxsw_sp_acl_atcam_region_12kb_init,
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.fini = mlxsw_sp_acl_atcam_region_12kb_fini,
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.lkey_id_get = mlxsw_sp_acl_atcam_12kb_lkey_id_get,
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.lkey_id_put = mlxsw_sp_acl_atcam_12kb_lkey_id_put,
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};
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static const struct mlxsw_sp_acl_atcam_region_ops *
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mlxsw_sp_acl_atcam_region_ops_arr[] = {
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[MLXSW_SP_ACL_ATCAM_REGION_TYPE_2KB] =
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&mlxsw_sp_acl_atcam_region_generic_ops,
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[MLXSW_SP_ACL_ATCAM_REGION_TYPE_4KB] =
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&mlxsw_sp_acl_atcam_region_generic_ops,
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[MLXSW_SP_ACL_ATCAM_REGION_TYPE_8KB] =
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&mlxsw_sp_acl_atcam_region_generic_ops,
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[MLXSW_SP_ACL_ATCAM_REGION_TYPE_12KB] =
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&mlxsw_sp_acl_atcam_region_12kb_ops,
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};
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int mlxsw_sp_acl_atcam_region_associate(struct mlxsw_sp *mlxsw_sp,
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u16 region_id)
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{
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char perar_pl[MLXSW_REG_PERAR_LEN];
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/* For now, just assume that every region has 12 key blocks */
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u16 hw_region = region_id * 3;
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u64 max_regions;
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max_regions = MLXSW_CORE_RES_GET(mlxsw_sp->core, ACL_MAX_REGIONS);
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if (hw_region >= max_regions)
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return -ENOBUFS;
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mlxsw_reg_perar_pack(perar_pl, region_id, hw_region);
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return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(perar), perar_pl);
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}
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static void
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mlxsw_sp_acl_atcam_region_type_init(struct mlxsw_sp_acl_atcam_region *aregion)
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{
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struct mlxsw_sp_acl_tcam_region *region = aregion->region;
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enum mlxsw_sp_acl_atcam_region_type region_type;
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unsigned int blocks_count;
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/* We already know the blocks count can not exceed the maximum
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* blocks count.
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*/
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blocks_count = mlxsw_afk_key_info_blocks_count_get(region->key_info);
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if (blocks_count <= 2)
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region_type = MLXSW_SP_ACL_ATCAM_REGION_TYPE_2KB;
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else if (blocks_count <= 4)
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region_type = MLXSW_SP_ACL_ATCAM_REGION_TYPE_4KB;
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else if (blocks_count <= 8)
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region_type = MLXSW_SP_ACL_ATCAM_REGION_TYPE_8KB;
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else
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region_type = MLXSW_SP_ACL_ATCAM_REGION_TYPE_12KB;
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aregion->type = region_type;
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aregion->ops = mlxsw_sp_acl_atcam_region_ops_arr[region_type];
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}
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||
|
|
|
||
|
|
int
|
||
|
|
mlxsw_sp_acl_atcam_region_init(struct mlxsw_sp *mlxsw_sp,
|
||
|
|
struct mlxsw_sp_acl_atcam *atcam,
|
||
|
|
struct mlxsw_sp_acl_atcam_region *aregion,
|
||
|
|
struct mlxsw_sp_acl_tcam_region *region,
|
||
|
|
void *hints_priv,
|
||
|
|
const struct mlxsw_sp_acl_ctcam_region_ops *ops)
|
||
|
|
{
|
||
|
|
int err;
|
||
|
|
|
||
|
|
aregion->region = region;
|
||
|
|
aregion->atcam = atcam;
|
||
|
|
mlxsw_sp_acl_atcam_region_type_init(aregion);
|
||
|
|
INIT_LIST_HEAD(&aregion->entries_list);
|
||
|
|
|
||
|
|
err = rhashtable_init(&aregion->entries_ht,
|
||
|
|
&mlxsw_sp_acl_atcam_entries_ht_params);
|
||
|
|
if (err)
|
||
|
|
return err;
|
||
|
|
err = aregion->ops->init(aregion);
|
||
|
|
if (err)
|
||
|
|
goto err_ops_init;
|
||
|
|
err = mlxsw_sp_acl_erp_region_init(aregion, hints_priv);
|
||
|
|
if (err)
|
||
|
|
goto err_erp_region_init;
|
||
|
|
err = mlxsw_sp_acl_ctcam_region_init(mlxsw_sp, &aregion->cregion,
|
||
|
|
region, ops);
|
||
|
|
if (err)
|
||
|
|
goto err_ctcam_region_init;
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
err_ctcam_region_init:
|
||
|
|
mlxsw_sp_acl_erp_region_fini(aregion);
|
||
|
|
err_erp_region_init:
|
||
|
|
aregion->ops->fini(aregion);
|
||
|
|
err_ops_init:
|
||
|
|
rhashtable_destroy(&aregion->entries_ht);
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
|
||
|
|
void mlxsw_sp_acl_atcam_region_fini(struct mlxsw_sp_acl_atcam_region *aregion)
|
||
|
|
{
|
||
|
|
mlxsw_sp_acl_ctcam_region_fini(&aregion->cregion);
|
||
|
|
mlxsw_sp_acl_erp_region_fini(aregion);
|
||
|
|
aregion->ops->fini(aregion);
|
||
|
|
rhashtable_destroy(&aregion->entries_ht);
|
||
|
|
WARN_ON(!list_empty(&aregion->entries_list));
|
||
|
|
}
|
||
|
|
|
||
|
|
void mlxsw_sp_acl_atcam_chunk_init(struct mlxsw_sp_acl_atcam_region *aregion,
|
||
|
|
struct mlxsw_sp_acl_atcam_chunk *achunk,
|
||
|
|
unsigned int priority)
|
||
|
|
{
|
||
|
|
mlxsw_sp_acl_ctcam_chunk_init(&aregion->cregion, &achunk->cchunk,
|
||
|
|
priority);
|
||
|
|
}
|
||
|
|
|
||
|
|
void mlxsw_sp_acl_atcam_chunk_fini(struct mlxsw_sp_acl_atcam_chunk *achunk)
|
||
|
|
{
|
||
|
|
mlxsw_sp_acl_ctcam_chunk_fini(&achunk->cchunk);
|
||
|
|
}
|
||
|
|
|
||
|
|
static int
|
||
|
|
mlxsw_sp_acl_atcam_region_entry_insert(struct mlxsw_sp *mlxsw_sp,
|
||
|
|
struct mlxsw_sp_acl_atcam_region *aregion,
|
||
|
|
struct mlxsw_sp_acl_atcam_entry *aentry,
|
||
|
|
struct mlxsw_sp_acl_rule_info *rulei)
|
||
|
|
{
|
||
|
|
struct mlxsw_sp_acl_tcam_region *region = aregion->region;
|
||
|
|
u8 erp_id = mlxsw_sp_acl_erp_mask_erp_id(aentry->erp_mask);
|
||
|
|
struct mlxsw_sp_acl_atcam_lkey_id *lkey_id;
|
||
|
|
char ptce3_pl[MLXSW_REG_PTCE3_LEN];
|
||
|
|
u32 kvdl_index, priority;
|
||
|
|
int err;
|
||
|
|
|
||
|
|
err = mlxsw_sp_acl_tcam_priority_get(mlxsw_sp, rulei, &priority, true);
|
||
|
|
if (err)
|
||
|
|
return err;
|
||
|
|
|
||
|
|
lkey_id = aregion->ops->lkey_id_get(aregion, aentry->enc_key, erp_id);
|
||
|
|
if (IS_ERR(lkey_id))
|
||
|
|
return PTR_ERR(lkey_id);
|
||
|
|
aentry->lkey_id = lkey_id;
|
||
|
|
|
||
|
|
kvdl_index = mlxsw_afa_block_first_kvdl_index(rulei->act_block);
|
||
|
|
mlxsw_reg_ptce3_pack(ptce3_pl, true, MLXSW_REG_PTCE3_OP_WRITE_WRITE,
|
||
|
|
priority, region->tcam_region_info,
|
||
|
|
aentry->enc_key, erp_id,
|
||
|
|
aentry->delta_info.start,
|
||
|
|
aentry->delta_info.mask,
|
||
|
|
aentry->delta_info.value,
|
||
|
|
refcount_read(&lkey_id->refcnt) != 1, lkey_id->id,
|
||
|
|
kvdl_index);
|
||
|
|
err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ptce3), ptce3_pl);
|
||
|
|
if (err)
|
||
|
|
goto err_ptce3_write;
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
err_ptce3_write:
|
||
|
|
aregion->ops->lkey_id_put(aregion, lkey_id);
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void
|
||
|
|
mlxsw_sp_acl_atcam_region_entry_remove(struct mlxsw_sp *mlxsw_sp,
|
||
|
|
struct mlxsw_sp_acl_atcam_region *aregion,
|
||
|
|
struct mlxsw_sp_acl_atcam_entry *aentry)
|
||
|
|
{
|
||
|
|
struct mlxsw_sp_acl_atcam_lkey_id *lkey_id = aentry->lkey_id;
|
||
|
|
struct mlxsw_sp_acl_tcam_region *region = aregion->region;
|
||
|
|
u8 erp_id = mlxsw_sp_acl_erp_mask_erp_id(aentry->erp_mask);
|
||
|
|
char ptce3_pl[MLXSW_REG_PTCE3_LEN];
|
||
|
|
|
||
|
|
mlxsw_reg_ptce3_pack(ptce3_pl, false, MLXSW_REG_PTCE3_OP_WRITE_WRITE, 0,
|
||
|
|
region->tcam_region_info,
|
||
|
|
aentry->enc_key, erp_id,
|
||
|
|
aentry->delta_info.start,
|
||
|
|
aentry->delta_info.mask,
|
||
|
|
aentry->delta_info.value,
|
||
|
|
refcount_read(&lkey_id->refcnt) != 1,
|
||
|
|
lkey_id->id, 0);
|
||
|
|
mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ptce3), ptce3_pl);
|
||
|
|
aregion->ops->lkey_id_put(aregion, lkey_id);
|
||
|
|
}
|
||
|
|
|
||
|
|
static int
|
||
|
|
mlxsw_sp_acl_atcam_region_entry_action_replace(struct mlxsw_sp *mlxsw_sp,
|
||
|
|
struct mlxsw_sp_acl_atcam_region *aregion,
|
||
|
|
struct mlxsw_sp_acl_atcam_entry *aentry,
|
||
|
|
struct mlxsw_sp_acl_rule_info *rulei)
|
||
|
|
{
|
||
|
|
struct mlxsw_sp_acl_atcam_lkey_id *lkey_id = aentry->lkey_id;
|
||
|
|
u8 erp_id = mlxsw_sp_acl_erp_mask_erp_id(aentry->erp_mask);
|
||
|
|
struct mlxsw_sp_acl_tcam_region *region = aregion->region;
|
||
|
|
char ptce3_pl[MLXSW_REG_PTCE3_LEN];
|
||
|
|
u32 kvdl_index, priority;
|
||
|
|
int err;
|
||
|
|
|
||
|
|
err = mlxsw_sp_acl_tcam_priority_get(mlxsw_sp, rulei, &priority, true);
|
||
|
|
if (err)
|
||
|
|
return err;
|
||
|
|
kvdl_index = mlxsw_afa_block_first_kvdl_index(rulei->act_block);
|
||
|
|
mlxsw_reg_ptce3_pack(ptce3_pl, true, MLXSW_REG_PTCE3_OP_WRITE_UPDATE,
|
||
|
|
priority, region->tcam_region_info,
|
||
|
|
aentry->enc_key, erp_id,
|
||
|
|
aentry->delta_info.start,
|
||
|
|
aentry->delta_info.mask,
|
||
|
|
aentry->delta_info.value,
|
||
|
|
refcount_read(&lkey_id->refcnt) != 1, lkey_id->id,
|
||
|
|
kvdl_index);
|
||
|
|
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ptce3), ptce3_pl);
|
||
|
|
}
|
||
|
|
|
||
|
|
static int
|
||
|
|
__mlxsw_sp_acl_atcam_entry_add(struct mlxsw_sp *mlxsw_sp,
|
||
|
|
struct mlxsw_sp_acl_atcam_region *aregion,
|
||
|
|
struct mlxsw_sp_acl_atcam_entry *aentry,
|
||
|
|
struct mlxsw_sp_acl_rule_info *rulei)
|
||
|
|
{
|
||
|
|
struct mlxsw_sp_acl_tcam_region *region = aregion->region;
|
||
|
|
char mask[MLXSW_REG_PTCEX_FLEX_KEY_BLOCKS_LEN] = { 0 };
|
||
|
|
struct mlxsw_afk *afk = mlxsw_sp_acl_afk(mlxsw_sp->acl);
|
||
|
|
const struct mlxsw_sp_acl_erp_delta *delta;
|
||
|
|
struct mlxsw_sp_acl_erp_mask *erp_mask;
|
||
|
|
int err;
|
||
|
|
|
||
|
|
mlxsw_afk_encode(afk, region->key_info, &rulei->values,
|
||
|
|
aentry->ht_key.full_enc_key, mask);
|
||
|
|
|
||
|
|
erp_mask = mlxsw_sp_acl_erp_mask_get(aregion, mask, false);
|
||
|
|
if (IS_ERR(erp_mask))
|
||
|
|
return PTR_ERR(erp_mask);
|
||
|
|
aentry->erp_mask = erp_mask;
|
||
|
|
aentry->ht_key.erp_id = mlxsw_sp_acl_erp_mask_erp_id(erp_mask);
|
||
|
|
memcpy(aentry->enc_key, aentry->ht_key.full_enc_key,
|
||
|
|
sizeof(aentry->enc_key));
|
||
|
|
|
||
|
|
/* Compute all needed delta information and clear the delta bits
|
||
|
|
* from the encrypted key.
|
||
|
|
*/
|
||
|
|
delta = mlxsw_sp_acl_erp_delta(aentry->erp_mask);
|
||
|
|
aentry->delta_info.start = mlxsw_sp_acl_erp_delta_start(delta);
|
||
|
|
aentry->delta_info.mask = mlxsw_sp_acl_erp_delta_mask(delta);
|
||
|
|
aentry->delta_info.value =
|
||
|
|
mlxsw_sp_acl_erp_delta_value(delta,
|
||
|
|
aentry->ht_key.full_enc_key);
|
||
|
|
mlxsw_sp_acl_erp_delta_clear(delta, aentry->enc_key);
|
||
|
|
|
||
|
|
/* Add rule to the list of A-TCAM rules, assuming this
|
||
|
|
* rule is intended to A-TCAM. In case this rule does
|
||
|
|
* not fit into A-TCAM it will be removed from the list.
|
||
|
|
*/
|
||
|
|
list_add(&aentry->list, &aregion->entries_list);
|
||
|
|
|
||
|
|
/* We can't insert identical rules into the A-TCAM, so fail and
|
||
|
|
* let the rule spill into C-TCAM
|
||
|
|
*/
|
||
|
|
err = rhashtable_lookup_insert_fast(&aregion->entries_ht,
|
||
|
|
&aentry->ht_node,
|
||
|
|
mlxsw_sp_acl_atcam_entries_ht_params);
|
||
|
|
if (err)
|
||
|
|
goto err_rhashtable_insert;
|
||
|
|
|
||
|
|
/* Bloom filter must be updated here, before inserting the rule into
|
||
|
|
* the A-TCAM.
|
||
|
|
*/
|
||
|
|
err = mlxsw_sp_acl_erp_bf_insert(mlxsw_sp, aregion, erp_mask, aentry);
|
||
|
|
if (err)
|
||
|
|
goto err_bf_insert;
|
||
|
|
|
||
|
|
err = mlxsw_sp_acl_atcam_region_entry_insert(mlxsw_sp, aregion, aentry,
|
||
|
|
rulei);
|
||
|
|
if (err)
|
||
|
|
goto err_rule_insert;
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
err_rule_insert:
|
||
|
|
mlxsw_sp_acl_erp_bf_remove(mlxsw_sp, aregion, erp_mask, aentry);
|
||
|
|
err_bf_insert:
|
||
|
|
rhashtable_remove_fast(&aregion->entries_ht, &aentry->ht_node,
|
||
|
|
mlxsw_sp_acl_atcam_entries_ht_params);
|
||
|
|
err_rhashtable_insert:
|
||
|
|
list_del(&aentry->list);
|
||
|
|
mlxsw_sp_acl_erp_mask_put(aregion, erp_mask);
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void
|
||
|
|
__mlxsw_sp_acl_atcam_entry_del(struct mlxsw_sp *mlxsw_sp,
|
||
|
|
struct mlxsw_sp_acl_atcam_region *aregion,
|
||
|
|
struct mlxsw_sp_acl_atcam_entry *aentry)
|
||
|
|
{
|
||
|
|
mlxsw_sp_acl_atcam_region_entry_remove(mlxsw_sp, aregion, aentry);
|
||
|
|
mlxsw_sp_acl_erp_bf_remove(mlxsw_sp, aregion, aentry->erp_mask, aentry);
|
||
|
|
rhashtable_remove_fast(&aregion->entries_ht, &aentry->ht_node,
|
||
|
|
mlxsw_sp_acl_atcam_entries_ht_params);
|
||
|
|
list_del(&aentry->list);
|
||
|
|
mlxsw_sp_acl_erp_mask_put(aregion, aentry->erp_mask);
|
||
|
|
}
|
||
|
|
|
||
|
|
static int
|
||
|
|
__mlxsw_sp_acl_atcam_entry_action_replace(struct mlxsw_sp *mlxsw_sp,
|
||
|
|
struct mlxsw_sp_acl_atcam_region *aregion,
|
||
|
|
struct mlxsw_sp_acl_atcam_entry *aentry,
|
||
|
|
struct mlxsw_sp_acl_rule_info *rulei)
|
||
|
|
{
|
||
|
|
return mlxsw_sp_acl_atcam_region_entry_action_replace(mlxsw_sp, aregion,
|
||
|
|
aentry, rulei);
|
||
|
|
}
|
||
|
|
|
||
|
|
int mlxsw_sp_acl_atcam_entry_add(struct mlxsw_sp *mlxsw_sp,
|
||
|
|
struct mlxsw_sp_acl_atcam_region *aregion,
|
||
|
|
struct mlxsw_sp_acl_atcam_chunk *achunk,
|
||
|
|
struct mlxsw_sp_acl_atcam_entry *aentry,
|
||
|
|
struct mlxsw_sp_acl_rule_info *rulei)
|
||
|
|
{
|
||
|
|
int err;
|
||
|
|
|
||
|
|
err = __mlxsw_sp_acl_atcam_entry_add(mlxsw_sp, aregion, aentry, rulei);
|
||
|
|
if (!err)
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
/* It is possible we failed to add the rule to the A-TCAM due to
|
||
|
|
* exceeded number of masks. Try to spill into C-TCAM.
|
||
|
|
*/
|
||
|
|
trace_mlxsw_sp_acl_atcam_entry_add_ctcam_spill(mlxsw_sp, aregion);
|
||
|
|
err = mlxsw_sp_acl_ctcam_entry_add(mlxsw_sp, &aregion->cregion,
|
||
|
|
&achunk->cchunk, &aentry->centry,
|
||
|
|
rulei, true);
|
||
|
|
if (!err)
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
|
||
|
|
void mlxsw_sp_acl_atcam_entry_del(struct mlxsw_sp *mlxsw_sp,
|
||
|
|
struct mlxsw_sp_acl_atcam_region *aregion,
|
||
|
|
struct mlxsw_sp_acl_atcam_chunk *achunk,
|
||
|
|
struct mlxsw_sp_acl_atcam_entry *aentry)
|
||
|
|
{
|
||
|
|
if (mlxsw_sp_acl_atcam_is_centry(aentry))
|
||
|
|
mlxsw_sp_acl_ctcam_entry_del(mlxsw_sp, &aregion->cregion,
|
||
|
|
&achunk->cchunk, &aentry->centry);
|
||
|
|
else
|
||
|
|
__mlxsw_sp_acl_atcam_entry_del(mlxsw_sp, aregion, aentry);
|
||
|
|
}
|
||
|
|
|
||
|
|
int
|
||
|
|
mlxsw_sp_acl_atcam_entry_action_replace(struct mlxsw_sp *mlxsw_sp,
|
||
|
|
struct mlxsw_sp_acl_atcam_region *aregion,
|
||
|
|
struct mlxsw_sp_acl_atcam_entry *aentry,
|
||
|
|
struct mlxsw_sp_acl_rule_info *rulei)
|
||
|
|
{
|
||
|
|
int err;
|
||
|
|
|
||
|
|
if (mlxsw_sp_acl_atcam_is_centry(aentry))
|
||
|
|
err = mlxsw_sp_acl_ctcam_entry_action_replace(mlxsw_sp,
|
||
|
|
&aregion->cregion,
|
||
|
|
&aentry->centry,
|
||
|
|
rulei);
|
||
|
|
else
|
||
|
|
err = __mlxsw_sp_acl_atcam_entry_action_replace(mlxsw_sp,
|
||
|
|
aregion, aentry,
|
||
|
|
rulei);
|
||
|
|
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
|
||
|
|
int mlxsw_sp_acl_atcam_init(struct mlxsw_sp *mlxsw_sp,
|
||
|
|
struct mlxsw_sp_acl_atcam *atcam)
|
||
|
|
{
|
||
|
|
return mlxsw_sp_acl_erps_init(mlxsw_sp, atcam);
|
||
|
|
}
|
||
|
|
|
||
|
|
void mlxsw_sp_acl_atcam_fini(struct mlxsw_sp *mlxsw_sp,
|
||
|
|
struct mlxsw_sp_acl_atcam *atcam)
|
||
|
|
{
|
||
|
|
mlxsw_sp_acl_erps_fini(mlxsw_sp, atcam);
|
||
|
|
}
|
||
|
|
|
||
|
|
void *
|
||
|
|
mlxsw_sp_acl_atcam_rehash_hints_get(struct mlxsw_sp_acl_atcam_region *aregion)
|
||
|
|
{
|
||
|
|
return mlxsw_sp_acl_erp_rehash_hints_get(aregion);
|
||
|
|
}
|
||
|
|
|
||
|
|
void mlxsw_sp_acl_atcam_rehash_hints_put(void *hints_priv)
|
||
|
|
{
|
||
|
|
mlxsw_sp_acl_erp_rehash_hints_put(hints_priv);
|
||
|
|
}
|