Commit d2185e79 authored by Daniel Machon's avatar Daniel Machon Committed by David S. Miller

net: microchip: sparx5: add support for PSFP flow-meters

Add support for configuring PSFP flow-meters (IEEE 802.1Q-2018,
8.6.5.1.3).

The VCAP CLM (VCAP IS0 ingress classifier) classifies streams,
identified by ISDX (Ingress Service Index, frame metadata), and maps
ISDX to flow-meters. SDLB's provide the flow-meter parameters.
Signed-off-by: default avatarDaniel Machon <daniel.machon@microchip.com>
Reviewed-by: default avatarSimon Horman <simon.horman@corigine.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 1db82abf
...@@ -10,7 +10,7 @@ sparx5-switch-y := sparx5_main.o sparx5_packet.o \ ...@@ -10,7 +10,7 @@ sparx5-switch-y := sparx5_main.o sparx5_packet.o \
sparx5_switchdev.o sparx5_calendar.o sparx5_ethtool.o sparx5_fdma.o \ sparx5_switchdev.o sparx5_calendar.o sparx5_ethtool.o sparx5_fdma.o \
sparx5_ptp.o sparx5_pgid.o sparx5_tc.o sparx5_qos.o \ sparx5_ptp.o sparx5_pgid.o sparx5_tc.o sparx5_qos.o \
sparx5_vcap_impl.o sparx5_vcap_ag_api.o sparx5_tc_flower.o \ sparx5_vcap_impl.o sparx5_vcap_ag_api.o sparx5_tc_flower.o \
sparx5_tc_matchall.o sparx5_pool.o sparx5_sdlb.o sparx5_police.o sparx5_tc_matchall.o sparx5_pool.o sparx5_sdlb.o sparx5_police.o sparx5_psfp.o
sparx5-switch-$(CONFIG_SPARX5_DCB) += sparx5_dcb.o sparx5-switch-$(CONFIG_SPARX5_DCB) += sparx5_dcb.o
sparx5-switch-$(CONFIG_DEBUG_FS) += sparx5_vcap_debugfs.o sparx5-switch-$(CONFIG_DEBUG_FS) += sparx5_vcap_debugfs.o
......
...@@ -472,6 +472,15 @@ struct sparx5_policer { ...@@ -472,6 +472,15 @@ struct sparx5_policer {
int sparx5_policer_conf_set(struct sparx5 *sparx5, struct sparx5_policer *pol); int sparx5_policer_conf_set(struct sparx5 *sparx5, struct sparx5_policer *pol);
/* sparx5_psfp.c */
struct sparx5_psfp_fm {
struct sparx5_policer pol;
};
int sparx5_psfp_fm_add(struct sparx5 *sparx5, u32 uidx,
struct sparx5_psfp_fm *fm, u32 *id);
int sparx5_psfp_fm_del(struct sparx5 *sparx5, u32 id);
/* Clock period in picoseconds */ /* Clock period in picoseconds */
static inline u32 sparx5_clk_period(enum sparx5_core_clockfreq cclock) static inline u32 sparx5_clk_period(enum sparx5_core_clockfreq cclock)
{ {
......
// SPDX-License-Identifier: GPL-2.0+
/* Microchip Sparx5 Switch driver
*
* Copyright (c) 2023 Microchip Technology Inc. and its subsidiaries.
*/
#include "sparx5_main_regs.h"
#include "sparx5_main.h"
/* Pool of available service policers */
static struct sparx5_pool_entry sparx5_psfp_fm_pool[SPX5_SDLB_CNT];
static int sparx5_psfp_fm_get(u32 idx, u32 *id)
{
return sparx5_pool_get_with_idx(sparx5_psfp_fm_pool, SPX5_SDLB_CNT, idx,
id);
}
static int sparx5_psfp_fm_put(u32 id)
{
return sparx5_pool_put(sparx5_psfp_fm_pool, SPX5_SDLB_CNT, id);
}
static int sparx5_sdlb_conf_set(struct sparx5 *sparx5,
struct sparx5_psfp_fm *fm)
{
int (*sparx5_sdlb_group_action)(struct sparx5 *sparx5, u32 group,
u32 idx);
if (!fm->pol.rate && !fm->pol.burst)
sparx5_sdlb_group_action = &sparx5_sdlb_group_del;
else
sparx5_sdlb_group_action = &sparx5_sdlb_group_add;
sparx5_policer_conf_set(sparx5, &fm->pol);
return sparx5_sdlb_group_action(sparx5, fm->pol.group, fm->pol.idx);
}
int sparx5_psfp_fm_add(struct sparx5 *sparx5, u32 uidx,
struct sparx5_psfp_fm *fm, u32 *id)
{
struct sparx5_policer *pol = &fm->pol;
int ret;
/* Get flow meter */
ret = sparx5_psfp_fm_get(uidx, &fm->pol.idx);
if (ret < 0)
return ret;
/* Was already in use, no need to reconfigure */
if (ret > 1)
return 0;
ret = sparx5_sdlb_group_get_by_rate(sparx5, pol->rate, pol->burst);
if (ret < 0)
return ret;
fm->pol.group = ret;
ret = sparx5_sdlb_conf_set(sparx5, fm);
if (ret < 0)
return ret;
*id = fm->pol.idx;
return 0;
}
int sparx5_psfp_fm_del(struct sparx5 *sparx5, u32 id)
{
struct sparx5_psfp_fm fm = { .pol.idx = id,
.pol.type = SPX5_POL_SERVICE };
int ret;
/* Find the group that this lb belongs to */
ret = sparx5_sdlb_group_get_by_index(sparx5, id, &fm.pol.group);
if (ret < 0)
return ret;
ret = sparx5_psfp_fm_put(id);
if (ret < 0)
return ret;
/* Do not reset flow-meter if still in use. */
if (ret > 0)
return 0;
return sparx5_sdlb_conf_set(sparx5, &fm);
}
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