2507a64c17
Multicast routes actions may be updated after creation. An example for that is an addition of an egress interface to an existing route. So far, as tc flower API dictated, ACL rules were either created or deleted. Since multicast routes in Spectrum-2 are written to ACL as any rule, it is required to allow the update of a rule's action as it may change. Add methods and operations to support updating rule's action. This is supported only for Spectrum-2. Signed-off-by: Nir Dotan <nird@mellanox.com> Reviewed-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
227 lines
6.9 KiB
C
227 lines
6.9 KiB
C
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
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/* Copyright (c) 2017-2018 Mellanox Technologies. All rights reserved */
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#include <linux/kernel.h>
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#include <linux/errno.h>
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#include <linux/parman.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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static int
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mlxsw_sp_acl_ctcam_region_resize(struct mlxsw_sp *mlxsw_sp,
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struct mlxsw_sp_acl_tcam_region *region,
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u16 new_size)
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{
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char ptar_pl[MLXSW_REG_PTAR_LEN];
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mlxsw_reg_ptar_pack(ptar_pl, MLXSW_REG_PTAR_OP_RESIZE,
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region->key_type, new_size, region->id,
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region->tcam_region_info);
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return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ptar), ptar_pl);
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}
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static void
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mlxsw_sp_acl_ctcam_region_move(struct mlxsw_sp *mlxsw_sp,
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struct mlxsw_sp_acl_tcam_region *region,
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u16 src_offset, u16 dst_offset, u16 size)
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{
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char prcr_pl[MLXSW_REG_PRCR_LEN];
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mlxsw_reg_prcr_pack(prcr_pl, MLXSW_REG_PRCR_OP_MOVE,
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region->tcam_region_info, src_offset,
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region->tcam_region_info, dst_offset, size);
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mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(prcr), prcr_pl);
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}
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static int
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mlxsw_sp_acl_ctcam_region_entry_insert(struct mlxsw_sp *mlxsw_sp,
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struct mlxsw_sp_acl_ctcam_region *cregion,
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struct mlxsw_sp_acl_ctcam_entry *centry,
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struct mlxsw_sp_acl_rule_info *rulei,
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bool fillup_priority)
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{
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struct mlxsw_sp_acl_tcam_region *region = cregion->region;
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struct mlxsw_afk *afk = mlxsw_sp_acl_afk(mlxsw_sp->acl);
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char ptce2_pl[MLXSW_REG_PTCE2_LEN];
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char *act_set;
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u32 priority;
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char *mask;
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char *key;
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int err;
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err = mlxsw_sp_acl_tcam_priority_get(mlxsw_sp, rulei, &priority,
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fillup_priority);
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if (err)
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return err;
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mlxsw_reg_ptce2_pack(ptce2_pl, true, MLXSW_REG_PTCE2_OP_WRITE_WRITE,
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region->tcam_region_info,
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centry->parman_item.index, priority);
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key = mlxsw_reg_ptce2_flex_key_blocks_data(ptce2_pl);
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mask = mlxsw_reg_ptce2_mask_data(ptce2_pl);
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mlxsw_afk_encode(afk, region->key_info, &rulei->values, key, mask);
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err = cregion->ops->entry_insert(cregion, centry, mask);
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if (err)
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return err;
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/* Only the first action set belongs here, the rest is in KVD */
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act_set = mlxsw_afa_block_first_set(rulei->act_block);
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mlxsw_reg_ptce2_flex_action_set_memcpy_to(ptce2_pl, act_set);
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return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ptce2), ptce2_pl);
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}
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static void
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mlxsw_sp_acl_ctcam_region_entry_remove(struct mlxsw_sp *mlxsw_sp,
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struct mlxsw_sp_acl_ctcam_region *cregion,
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struct mlxsw_sp_acl_ctcam_entry *centry)
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{
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char ptce2_pl[MLXSW_REG_PTCE2_LEN];
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mlxsw_reg_ptce2_pack(ptce2_pl, false, MLXSW_REG_PTCE2_OP_WRITE_WRITE,
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cregion->region->tcam_region_info,
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centry->parman_item.index, 0);
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mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ptce2), ptce2_pl);
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cregion->ops->entry_remove(cregion, centry);
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}
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static int
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mlxsw_sp_acl_ctcam_region_entry_action_replace(struct mlxsw_sp *mlxsw_sp,
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struct mlxsw_sp_acl_ctcam_region *cregion,
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struct mlxsw_sp_acl_ctcam_entry *centry,
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struct mlxsw_afa_block *afa_block,
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unsigned int priority)
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{
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char ptce2_pl[MLXSW_REG_PTCE2_LEN];
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char *act_set;
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mlxsw_reg_ptce2_pack(ptce2_pl, true, MLXSW_REG_PTCE2_OP_WRITE_UPDATE,
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cregion->region->tcam_region_info,
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centry->parman_item.index, priority);
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act_set = mlxsw_afa_block_first_set(afa_block);
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mlxsw_reg_ptce2_flex_action_set_memcpy_to(ptce2_pl, act_set);
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return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ptce2), ptce2_pl);
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}
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static int mlxsw_sp_acl_ctcam_region_parman_resize(void *priv,
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unsigned long new_count)
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{
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struct mlxsw_sp_acl_ctcam_region *cregion = priv;
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struct mlxsw_sp_acl_tcam_region *region = cregion->region;
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struct mlxsw_sp *mlxsw_sp = region->mlxsw_sp;
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u64 max_tcam_rules;
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max_tcam_rules = MLXSW_CORE_RES_GET(mlxsw_sp->core, ACL_MAX_TCAM_RULES);
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if (new_count > max_tcam_rules)
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return -EINVAL;
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return mlxsw_sp_acl_ctcam_region_resize(mlxsw_sp, region, new_count);
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}
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static void mlxsw_sp_acl_ctcam_region_parman_move(void *priv,
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unsigned long from_index,
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unsigned long to_index,
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unsigned long count)
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{
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struct mlxsw_sp_acl_ctcam_region *cregion = priv;
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struct mlxsw_sp_acl_tcam_region *region = cregion->region;
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struct mlxsw_sp *mlxsw_sp = region->mlxsw_sp;
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mlxsw_sp_acl_ctcam_region_move(mlxsw_sp, region,
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from_index, to_index, count);
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}
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static const struct parman_ops mlxsw_sp_acl_ctcam_region_parman_ops = {
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.base_count = MLXSW_SP_ACL_TCAM_REGION_BASE_COUNT,
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.resize_step = MLXSW_SP_ACL_TCAM_REGION_RESIZE_STEP,
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.resize = mlxsw_sp_acl_ctcam_region_parman_resize,
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.move = mlxsw_sp_acl_ctcam_region_parman_move,
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.algo = PARMAN_ALGO_TYPE_LSORT,
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};
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int
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mlxsw_sp_acl_ctcam_region_init(struct mlxsw_sp *mlxsw_sp,
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struct mlxsw_sp_acl_ctcam_region *cregion,
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struct mlxsw_sp_acl_tcam_region *region,
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const struct mlxsw_sp_acl_ctcam_region_ops *ops)
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{
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cregion->region = region;
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cregion->ops = ops;
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cregion->parman = parman_create(&mlxsw_sp_acl_ctcam_region_parman_ops,
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cregion);
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if (!cregion->parman)
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return -ENOMEM;
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return 0;
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}
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void mlxsw_sp_acl_ctcam_region_fini(struct mlxsw_sp_acl_ctcam_region *cregion)
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{
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parman_destroy(cregion->parman);
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}
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void mlxsw_sp_acl_ctcam_chunk_init(struct mlxsw_sp_acl_ctcam_region *cregion,
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struct mlxsw_sp_acl_ctcam_chunk *cchunk,
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unsigned int priority)
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{
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parman_prio_init(cregion->parman, &cchunk->parman_prio, priority);
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}
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void mlxsw_sp_acl_ctcam_chunk_fini(struct mlxsw_sp_acl_ctcam_chunk *cchunk)
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{
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parman_prio_fini(&cchunk->parman_prio);
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}
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int mlxsw_sp_acl_ctcam_entry_add(struct mlxsw_sp *mlxsw_sp,
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struct mlxsw_sp_acl_ctcam_region *cregion,
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struct mlxsw_sp_acl_ctcam_chunk *cchunk,
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struct mlxsw_sp_acl_ctcam_entry *centry,
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struct mlxsw_sp_acl_rule_info *rulei,
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bool fillup_priority)
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{
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int err;
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err = parman_item_add(cregion->parman, &cchunk->parman_prio,
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¢ry->parman_item);
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if (err)
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return err;
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err = mlxsw_sp_acl_ctcam_region_entry_insert(mlxsw_sp, cregion, centry,
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rulei, fillup_priority);
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if (err)
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goto err_rule_insert;
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return 0;
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err_rule_insert:
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parman_item_remove(cregion->parman, &cchunk->parman_prio,
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¢ry->parman_item);
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return err;
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}
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void mlxsw_sp_acl_ctcam_entry_del(struct mlxsw_sp *mlxsw_sp,
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struct mlxsw_sp_acl_ctcam_region *cregion,
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struct mlxsw_sp_acl_ctcam_chunk *cchunk,
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struct mlxsw_sp_acl_ctcam_entry *centry)
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{
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mlxsw_sp_acl_ctcam_region_entry_remove(mlxsw_sp, cregion, centry);
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parman_item_remove(cregion->parman, &cchunk->parman_prio,
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¢ry->parman_item);
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}
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int mlxsw_sp_acl_ctcam_entry_action_replace(struct mlxsw_sp *mlxsw_sp,
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struct mlxsw_sp_acl_ctcam_region *cregion,
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struct mlxsw_sp_acl_ctcam_chunk *cchunk,
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struct mlxsw_sp_acl_ctcam_entry *centry,
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struct mlxsw_sp_acl_rule_info *rulei)
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{
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return mlxsw_sp_acl_ctcam_region_entry_action_replace(mlxsw_sp, cregion,
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centry,
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rulei->act_block,
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rulei->priority);
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}
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