drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_ctcam.c

Source file repositories/reference/linux-study-clean/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_ctcam.c

File Facts

System
Linux kernel
Corpus path
drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_ctcam.c
Extension
.c
Size
7174 bytes
Lines
234
Domain
Driver Families
Bucket
drivers/net
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

// 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/errno.h>
#include <linux/parman.h>

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

static int
mlxsw_sp_acl_ctcam_region_resize(struct mlxsw_sp *mlxsw_sp,
				 struct mlxsw_sp_acl_tcam_region *region,
				 u16 new_size)
{
	char ptar_pl[MLXSW_REG_PTAR_LEN];

	mlxsw_reg_ptar_pack(ptar_pl, MLXSW_REG_PTAR_OP_RESIZE,
			    region->key_type, new_size, region->id,
			    region->tcam_region_info);
	return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ptar), ptar_pl);
}

static void
mlxsw_sp_acl_ctcam_region_move(struct mlxsw_sp *mlxsw_sp,
			       struct mlxsw_sp_acl_tcam_region *region,
			       u16 src_offset, u16 dst_offset, u16 size)
{
	char prcr_pl[MLXSW_REG_PRCR_LEN];

	mlxsw_reg_prcr_pack(prcr_pl, MLXSW_REG_PRCR_OP_MOVE,
			    region->tcam_region_info, src_offset,
			    region->tcam_region_info, dst_offset, size);
	mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(prcr), prcr_pl);
}

static int
mlxsw_sp_acl_ctcam_region_entry_insert(struct mlxsw_sp *mlxsw_sp,
				       struct mlxsw_sp_acl_ctcam_region *cregion,
				       struct mlxsw_sp_acl_ctcam_entry *centry,
				       struct mlxsw_sp_acl_rule_info *rulei,
				       bool fillup_priority)
{
	struct mlxsw_sp_acl_tcam_region *region = cregion->region;
	struct mlxsw_afk *afk = mlxsw_sp_acl_afk(mlxsw_sp->acl);
	char ptce2_pl[MLXSW_REG_PTCE2_LEN];
	char *act_set;
	u32 priority;
	char *mask;
	char *key;
	int err;

	err = mlxsw_sp_acl_tcam_priority_get(mlxsw_sp, rulei, &priority,
					     fillup_priority);
	if (err)
		return err;

	mlxsw_reg_ptce2_pack(ptce2_pl, true, MLXSW_REG_PTCE2_OP_WRITE_WRITE,
			     region->tcam_region_info,
			     centry->parman_item.index, priority);
	key = mlxsw_reg_ptce2_flex_key_blocks_data(ptce2_pl);
	mask = mlxsw_reg_ptce2_mask_data(ptce2_pl);
	mlxsw_afk_encode(afk, region->key_info, &rulei->values, key, mask);

	err = cregion->ops->entry_insert(cregion, centry, mask);
	if (err)
		return err;

	/* Only the first action set belongs here, the rest is in KVD */
	act_set = mlxsw_afa_block_first_set(rulei->act_block);
	mlxsw_reg_ptce2_flex_action_set_memcpy_to(ptce2_pl, act_set);

	err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ptce2), ptce2_pl);
	if (err)
		goto err_ptce2_write;

	return 0;

err_ptce2_write:
	cregion->ops->entry_remove(cregion, centry);
	return err;
}

static void
mlxsw_sp_acl_ctcam_region_entry_remove(struct mlxsw_sp *mlxsw_sp,
				       struct mlxsw_sp_acl_ctcam_region *cregion,
				       struct mlxsw_sp_acl_ctcam_entry *centry)
{

Annotation

Implementation Notes