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linuxdebug/drivers/net/ethernet/netronome/nfp/flower/qos_conf.c

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// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
/* Copyright (C) 2019 Netronome Systems, Inc. */
#include <linux/hash.h>
#include <linux/hashtable.h>
#include <linux/jhash.h>
#include <linux/math64.h>
#include <linux/vmalloc.h>
#include <net/pkt_cls.h>
#include <net/pkt_sched.h>
#include "cmsg.h"
#include "main.h"
#include "../nfp_port.h"
#define NFP_FL_QOS_UPDATE msecs_to_jiffies(1000)
#define NFP_FL_QOS_PPS BIT(15)
#define NFP_FL_QOS_METER BIT(10)
struct nfp_police_cfg_head {
__be32 flags_opts;
union {
__be32 meter_id;
__be32 port;
};
};
enum NFP_FL_QOS_TYPES {
NFP_FL_QOS_TYPE_BPS,
NFP_FL_QOS_TYPE_PPS,
NFP_FL_QOS_TYPE_MAX,
};
/* Police cmsg for configuring a trTCM traffic conditioner (8W/32B)
* See RFC 2698 for more details.
* ----------------------------------------------------------------
* 3 2 1
* 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | Reserved |p| Reserved |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | Port Ingress |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | Token Bucket Peak |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | Token Bucket Committed |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | Peak Burst Size |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | Committed Burst Size |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | Peak Information Rate |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | Committed Information Rate |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* Word[0](FLag options):
* [15] p(pps) 1 for pps, 0 for bps
*
* Meter control message
* 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0
* +-------------------------------+-+---+-----+-+---------+-+---+-+
* | Reserved |p| Y |TYPE |E|TSHFV |P| PC|R|
* +-------------------------------+-+---+-----+-+---------+-+---+-+
* | meter ID |
* +-------------------------------+-------------------------------+
*
*/
struct nfp_police_config {
struct nfp_police_cfg_head head;
__be32 bkt_tkn_p;
__be32 bkt_tkn_c;
__be32 pbs;
__be32 cbs;
__be32 pir;
__be32 cir;
};
struct nfp_police_stats_reply {
struct nfp_police_cfg_head head;
__be64 pass_bytes;
__be64 pass_pkts;
__be64 drop_bytes;
__be64 drop_pkts;
};
int nfp_flower_offload_one_police(struct nfp_app *app, bool ingress,
bool pps, u32 id, u32 rate, u32 burst)
{
struct nfp_police_config *config;
struct sk_buff *skb;
skb = nfp_flower_cmsg_alloc(app, sizeof(struct nfp_police_config),
NFP_FLOWER_CMSG_TYPE_QOS_MOD, GFP_KERNEL);
if (!skb)
return -ENOMEM;
config = nfp_flower_cmsg_get_data(skb);
memset(config, 0, sizeof(struct nfp_police_config));
if (pps)
config->head.flags_opts |= cpu_to_be32(NFP_FL_QOS_PPS);
if (!ingress)
config->head.flags_opts |= cpu_to_be32(NFP_FL_QOS_METER);
if (ingress)
config->head.port = cpu_to_be32(id);
else
config->head.meter_id = cpu_to_be32(id);
config->bkt_tkn_p = cpu_to_be32(burst);
config->bkt_tkn_c = cpu_to_be32(burst);
config->pbs = cpu_to_be32(burst);
config->cbs = cpu_to_be32(burst);
config->pir = cpu_to_be32(rate);
config->cir = cpu_to_be32(rate);
nfp_ctrl_tx(app->ctrl, skb);
return 0;
}
static int nfp_policer_validate(const struct flow_action *action,
const struct flow_action_entry *act,
struct netlink_ext_ack *extack,
bool ingress)
{
if (act->police.exceed.act_id != FLOW_ACTION_DROP) {
NL_SET_ERR_MSG_MOD(extack,
"Offload not supported when exceed action is not drop");
return -EOPNOTSUPP;
}
if (ingress) {
if (act->police.notexceed.act_id != FLOW_ACTION_CONTINUE &&
act->police.notexceed.act_id != FLOW_ACTION_ACCEPT) {
NL_SET_ERR_MSG_MOD(extack,
"Offload not supported when conform action is not continue or ok");
return -EOPNOTSUPP;
}
} else {
if (act->police.notexceed.act_id != FLOW_ACTION_PIPE &&
act->police.notexceed.act_id != FLOW_ACTION_ACCEPT) {
NL_SET_ERR_MSG_MOD(extack,
"Offload not supported when conform action is not pipe or ok");
return -EOPNOTSUPP;
}
}
if (act->police.notexceed.act_id == FLOW_ACTION_ACCEPT &&
!flow_action_is_last_entry(action, act)) {
NL_SET_ERR_MSG_MOD(extack,
"Offload not supported when conform action is ok, but action is not last");
return -EOPNOTSUPP;
}
if (act->police.peakrate_bytes_ps ||
act->police.avrate || act->police.overhead) {
NL_SET_ERR_MSG_MOD(extack,
"Offload not supported when peakrate/avrate/overhead is configured");
return -EOPNOTSUPP;
}
return 0;
}
static int
nfp_flower_install_rate_limiter(struct nfp_app *app, struct net_device *netdev,
struct tc_cls_matchall_offload *flow,
struct netlink_ext_ack *extack)
{
struct flow_action_entry *paction = &flow->rule->action.entries[0];
u32 action_num = flow->rule->action.num_entries;
struct nfp_flower_priv *fl_priv = app->priv;
struct flow_action_entry *action = NULL;
struct nfp_flower_repr_priv *repr_priv;
u32 netdev_port_id, i;
struct nfp_repr *repr;
bool pps_support;
u32 bps_num = 0;
u32 pps_num = 0;
u32 burst;
bool pps;
u64 rate;
int err;
if (!nfp_netdev_is_nfp_repr(netdev)) {
NL_SET_ERR_MSG_MOD(extack, "unsupported offload: qos rate limit offload not supported on higher level port");
return -EOPNOTSUPP;
}
repr = netdev_priv(netdev);
repr_priv = repr->app_priv;
netdev_port_id = nfp_repr_get_port_id(netdev);
pps_support = !!(fl_priv->flower_ext_feats & NFP_FL_FEATS_QOS_PPS);
if (repr_priv->block_shared) {
NL_SET_ERR_MSG_MOD(extack, "unsupported offload: qos rate limit offload not supported on shared blocks");
return -EOPNOTSUPP;
}
if (repr->port->type != NFP_PORT_VF_PORT) {
NL_SET_ERR_MSG_MOD(extack, "unsupported offload: qos rate limit offload not supported on non-VF ports");
return -EOPNOTSUPP;
}
if (pps_support) {
if (action_num > 2 || action_num == 0) {
NL_SET_ERR_MSG_MOD(extack,
"unsupported offload: qos rate limit offload only support action number 1 or 2");
return -EOPNOTSUPP;
}
} else {
if (!flow_offload_has_one_action(&flow->rule->action)) {
NL_SET_ERR_MSG_MOD(extack,
"unsupported offload: qos rate limit offload requires a single action");
return -EOPNOTSUPP;
}
}
if (flow->common.prio != 1) {
NL_SET_ERR_MSG_MOD(extack, "unsupported offload: qos rate limit offload requires highest priority");
return -EOPNOTSUPP;
}
for (i = 0 ; i < action_num; i++) {
action = paction + i;
if (action->id != FLOW_ACTION_POLICE) {
NL_SET_ERR_MSG_MOD(extack,
"unsupported offload: qos rate limit offload requires police action");
return -EOPNOTSUPP;
}
err = nfp_policer_validate(&flow->rule->action, action, extack, true);
if (err)
return err;
if (action->police.rate_bytes_ps > 0) {
if (bps_num++) {
NL_SET_ERR_MSG_MOD(extack,
"unsupported offload: qos rate limit offload only support one BPS action");
return -EOPNOTSUPP;
}
}
if (action->police.rate_pkt_ps > 0) {
if (!pps_support) {
NL_SET_ERR_MSG_MOD(extack,
"unsupported offload: FW does not support PPS action");
return -EOPNOTSUPP;
}
if (pps_num++) {
NL_SET_ERR_MSG_MOD(extack,
"unsupported offload: qos rate limit offload only support one PPS action");
return -EOPNOTSUPP;
}
}
}
for (i = 0 ; i < action_num; i++) {
/* Set QoS data for this interface */
action = paction + i;
if (action->police.rate_bytes_ps > 0) {
rate = action->police.rate_bytes_ps;
burst = action->police.burst;
} else if (action->police.rate_pkt_ps > 0) {
rate = action->police.rate_pkt_ps;
burst = action->police.burst_pkt;
} else {
NL_SET_ERR_MSG_MOD(extack,
"unsupported offload: qos rate limit is not BPS or PPS");
continue;
}
if (rate != 0) {
pps = false;
if (action->police.rate_pkt_ps > 0)
pps = true;
nfp_flower_offload_one_police(repr->app, true,
pps, netdev_port_id,
rate, burst);
}
}
repr_priv->qos_table.netdev_port_id = netdev_port_id;
fl_priv->qos_rate_limiters++;
if (fl_priv->qos_rate_limiters == 1)
schedule_delayed_work(&fl_priv->qos_stats_work,
NFP_FL_QOS_UPDATE);
return 0;
}
static int
nfp_flower_remove_rate_limiter(struct nfp_app *app, struct net_device *netdev,
struct tc_cls_matchall_offload *flow,
struct netlink_ext_ack *extack)
{
struct nfp_flower_priv *fl_priv = app->priv;
struct nfp_flower_repr_priv *repr_priv;
struct nfp_police_config *config;
u32 netdev_port_id, i;
struct nfp_repr *repr;
struct sk_buff *skb;
bool pps_support;
if (!nfp_netdev_is_nfp_repr(netdev)) {
NL_SET_ERR_MSG_MOD(extack, "unsupported offload: qos rate limit offload not supported on higher level port");
return -EOPNOTSUPP;
}
repr = netdev_priv(netdev);
netdev_port_id = nfp_repr_get_port_id(netdev);
repr_priv = repr->app_priv;
pps_support = !!(fl_priv->flower_ext_feats & NFP_FL_FEATS_QOS_PPS);
if (!repr_priv->qos_table.netdev_port_id) {
NL_SET_ERR_MSG_MOD(extack, "unsupported offload: cannot remove qos entry that does not exist");
return -EOPNOTSUPP;
}
memset(&repr_priv->qos_table, 0, sizeof(struct nfp_fl_qos));
fl_priv->qos_rate_limiters--;
if (!fl_priv->qos_rate_limiters)
cancel_delayed_work_sync(&fl_priv->qos_stats_work);
for (i = 0 ; i < NFP_FL_QOS_TYPE_MAX; i++) {
if (i == NFP_FL_QOS_TYPE_PPS && !pps_support)
break;
/* 0:bps 1:pps
* Clear QoS data for this interface.
* There is no need to check if a specific QOS_TYPE was
* configured as the firmware handles clearing a QoS entry
* safely, even if it wasn't explicitly added.
*/
skb = nfp_flower_cmsg_alloc(repr->app, sizeof(struct nfp_police_config),
NFP_FLOWER_CMSG_TYPE_QOS_DEL, GFP_KERNEL);
if (!skb)
return -ENOMEM;
config = nfp_flower_cmsg_get_data(skb);
memset(config, 0, sizeof(struct nfp_police_config));
if (i == NFP_FL_QOS_TYPE_PPS)
config->head.flags_opts = cpu_to_be32(NFP_FL_QOS_PPS);
config->head.port = cpu_to_be32(netdev_port_id);
nfp_ctrl_tx(repr->app->ctrl, skb);
}
return 0;
}
void nfp_flower_stats_rlim_reply(struct nfp_app *app, struct sk_buff *skb)
{
struct nfp_flower_priv *fl_priv = app->priv;
struct nfp_flower_repr_priv *repr_priv;
struct nfp_police_stats_reply *msg;
struct nfp_stat_pair *curr_stats;
struct nfp_stat_pair *prev_stats;
struct net_device *netdev;
struct nfp_repr *repr;
u32 netdev_port_id;
msg = nfp_flower_cmsg_get_data(skb);
if (be32_to_cpu(msg->head.flags_opts) & NFP_FL_QOS_METER)
return nfp_act_stats_reply(app, msg);
netdev_port_id = be32_to_cpu(msg->head.port);
rcu_read_lock();
netdev = nfp_app_dev_get(app, netdev_port_id, NULL);
if (!netdev)
goto exit_unlock_rcu;
repr = netdev_priv(netdev);
repr_priv = repr->app_priv;
curr_stats = &repr_priv->qos_table.curr_stats;
prev_stats = &repr_priv->qos_table.prev_stats;
spin_lock_bh(&fl_priv->qos_stats_lock);
curr_stats->pkts = be64_to_cpu(msg->pass_pkts) +
be64_to_cpu(msg->drop_pkts);
curr_stats->bytes = be64_to_cpu(msg->pass_bytes) +
be64_to_cpu(msg->drop_bytes);
if (!repr_priv->qos_table.last_update) {
prev_stats->pkts = curr_stats->pkts;
prev_stats->bytes = curr_stats->bytes;
}
repr_priv->qos_table.last_update = jiffies;
spin_unlock_bh(&fl_priv->qos_stats_lock);
exit_unlock_rcu:
rcu_read_unlock();
}
static void
nfp_flower_stats_rlim_request(struct nfp_flower_priv *fl_priv,
u32 id, bool ingress)
{
struct nfp_police_cfg_head *head;
struct sk_buff *skb;
skb = nfp_flower_cmsg_alloc(fl_priv->app,
sizeof(struct nfp_police_cfg_head),
NFP_FLOWER_CMSG_TYPE_QOS_STATS,
GFP_ATOMIC);
if (!skb)
return;
head = nfp_flower_cmsg_get_data(skb);
memset(head, 0, sizeof(struct nfp_police_cfg_head));
if (ingress) {
head->port = cpu_to_be32(id);
} else {
head->flags_opts = cpu_to_be32(NFP_FL_QOS_METER);
head->meter_id = cpu_to_be32(id);
}
nfp_ctrl_tx(fl_priv->app->ctrl, skb);
}
static void
nfp_flower_stats_rlim_request_all(struct nfp_flower_priv *fl_priv)
{
struct nfp_reprs *repr_set;
int i;
rcu_read_lock();
repr_set = rcu_dereference(fl_priv->app->reprs[NFP_REPR_TYPE_VF]);
if (!repr_set)
goto exit_unlock_rcu;
for (i = 0; i < repr_set->num_reprs; i++) {
struct net_device *netdev;
netdev = rcu_dereference(repr_set->reprs[i]);
if (netdev) {
struct nfp_repr *priv = netdev_priv(netdev);
struct nfp_flower_repr_priv *repr_priv;
u32 netdev_port_id;
repr_priv = priv->app_priv;
netdev_port_id = repr_priv->qos_table.netdev_port_id;
if (!netdev_port_id)
continue;
nfp_flower_stats_rlim_request(fl_priv,
netdev_port_id, true);
}
}
exit_unlock_rcu:
rcu_read_unlock();
}
static void update_stats_cache(struct work_struct *work)
{
struct delayed_work *delayed_work;
struct nfp_flower_priv *fl_priv;
delayed_work = to_delayed_work(work);
fl_priv = container_of(delayed_work, struct nfp_flower_priv,
qos_stats_work);
nfp_flower_stats_rlim_request_all(fl_priv);
nfp_flower_stats_meter_request_all(fl_priv);
schedule_delayed_work(&fl_priv->qos_stats_work, NFP_FL_QOS_UPDATE);
}
static int
nfp_flower_stats_rate_limiter(struct nfp_app *app, struct net_device *netdev,
struct tc_cls_matchall_offload *flow,
struct netlink_ext_ack *extack)
{
struct nfp_flower_priv *fl_priv = app->priv;
struct nfp_flower_repr_priv *repr_priv;
struct nfp_stat_pair *curr_stats;
struct nfp_stat_pair *prev_stats;
u64 diff_bytes, diff_pkts;
struct nfp_repr *repr;
if (!nfp_netdev_is_nfp_repr(netdev)) {
NL_SET_ERR_MSG_MOD(extack, "unsupported offload: qos rate limit offload not supported on higher level port");
return -EOPNOTSUPP;
}
repr = netdev_priv(netdev);
repr_priv = repr->app_priv;
if (!repr_priv->qos_table.netdev_port_id) {
NL_SET_ERR_MSG_MOD(extack, "unsupported offload: cannot find qos entry for stats update");
return -EOPNOTSUPP;
}
spin_lock_bh(&fl_priv->qos_stats_lock);
curr_stats = &repr_priv->qos_table.curr_stats;
prev_stats = &repr_priv->qos_table.prev_stats;
diff_pkts = curr_stats->pkts - prev_stats->pkts;
diff_bytes = curr_stats->bytes - prev_stats->bytes;
prev_stats->pkts = curr_stats->pkts;
prev_stats->bytes = curr_stats->bytes;
spin_unlock_bh(&fl_priv->qos_stats_lock);
flow_stats_update(&flow->stats, diff_bytes, diff_pkts, 0,
repr_priv->qos_table.last_update,
FLOW_ACTION_HW_STATS_DELAYED);
return 0;
}
void nfp_flower_qos_init(struct nfp_app *app)
{
struct nfp_flower_priv *fl_priv = app->priv;
spin_lock_init(&fl_priv->qos_stats_lock);
mutex_init(&fl_priv->meter_stats_lock);
nfp_init_meter_table(app);
INIT_DELAYED_WORK(&fl_priv->qos_stats_work, &update_stats_cache);
}
void nfp_flower_qos_cleanup(struct nfp_app *app)
{
struct nfp_flower_priv *fl_priv = app->priv;
cancel_delayed_work_sync(&fl_priv->qos_stats_work);
}
int nfp_flower_setup_qos_offload(struct nfp_app *app, struct net_device *netdev,
struct tc_cls_matchall_offload *flow)
{
struct netlink_ext_ack *extack = flow->common.extack;
struct nfp_flower_priv *fl_priv = app->priv;
if (!(fl_priv->flower_ext_feats & NFP_FL_FEATS_VF_RLIM)) {
NL_SET_ERR_MSG_MOD(extack, "unsupported offload: loaded firmware does not support qos rate limit offload");
return -EOPNOTSUPP;
}
switch (flow->command) {
case TC_CLSMATCHALL_REPLACE:
return nfp_flower_install_rate_limiter(app, netdev, flow,
extack);
case TC_CLSMATCHALL_DESTROY:
return nfp_flower_remove_rate_limiter(app, netdev, flow,
extack);
case TC_CLSMATCHALL_STATS:
return nfp_flower_stats_rate_limiter(app, netdev, flow,
extack);
default:
return -EOPNOTSUPP;
}
}
/* Offload tc action, currently only for tc police */
static const struct rhashtable_params stats_meter_table_params = {
.key_offset = offsetof(struct nfp_meter_entry, meter_id),
.head_offset = offsetof(struct nfp_meter_entry, ht_node),
.key_len = sizeof(u32),
};
struct nfp_meter_entry *
nfp_flower_search_meter_entry(struct nfp_app *app, u32 meter_id)
{
struct nfp_flower_priv *priv = app->priv;
return rhashtable_lookup_fast(&priv->meter_table, &meter_id,
stats_meter_table_params);
}
static struct nfp_meter_entry *
nfp_flower_add_meter_entry(struct nfp_app *app, u32 meter_id)
{
struct nfp_meter_entry *meter_entry = NULL;
struct nfp_flower_priv *priv = app->priv;
meter_entry = rhashtable_lookup_fast(&priv->meter_table,
&meter_id,
stats_meter_table_params);
if (meter_entry)
return meter_entry;
meter_entry = kzalloc(sizeof(*meter_entry), GFP_KERNEL);
if (!meter_entry)
return NULL;
meter_entry->meter_id = meter_id;
meter_entry->used = jiffies;
if (rhashtable_insert_fast(&priv->meter_table, &meter_entry->ht_node,
stats_meter_table_params)) {
kfree(meter_entry);
return NULL;
}
priv->qos_rate_limiters++;
if (priv->qos_rate_limiters == 1)
schedule_delayed_work(&priv->qos_stats_work,
NFP_FL_QOS_UPDATE);
return meter_entry;
}
static void nfp_flower_del_meter_entry(struct nfp_app *app, u32 meter_id)
{
struct nfp_meter_entry *meter_entry = NULL;
struct nfp_flower_priv *priv = app->priv;
meter_entry = rhashtable_lookup_fast(&priv->meter_table, &meter_id,
stats_meter_table_params);
if (!meter_entry)
return;
rhashtable_remove_fast(&priv->meter_table,
&meter_entry->ht_node,
stats_meter_table_params);
kfree(meter_entry);
priv->qos_rate_limiters--;
if (!priv->qos_rate_limiters)
cancel_delayed_work_sync(&priv->qos_stats_work);
}
int nfp_flower_setup_meter_entry(struct nfp_app *app,
const struct flow_action_entry *action,
enum nfp_meter_op op,
u32 meter_id)
{
struct nfp_flower_priv *fl_priv = app->priv;
struct nfp_meter_entry *meter_entry = NULL;
int err = 0;
mutex_lock(&fl_priv->meter_stats_lock);
switch (op) {
case NFP_METER_DEL:
nfp_flower_del_meter_entry(app, meter_id);
goto exit_unlock;
case NFP_METER_ADD:
meter_entry = nfp_flower_add_meter_entry(app, meter_id);
break;
default:
err = -EOPNOTSUPP;
goto exit_unlock;
}
if (!meter_entry) {
err = -ENOMEM;
goto exit_unlock;
}
if (action->police.rate_bytes_ps > 0) {
meter_entry->bps = true;
meter_entry->rate = action->police.rate_bytes_ps;
meter_entry->burst = action->police.burst;
} else {
meter_entry->bps = false;
meter_entry->rate = action->police.rate_pkt_ps;
meter_entry->burst = action->police.burst_pkt;
}
exit_unlock:
mutex_unlock(&fl_priv->meter_stats_lock);
return err;
}
int nfp_init_meter_table(struct nfp_app *app)
{
struct nfp_flower_priv *priv = app->priv;
return rhashtable_init(&priv->meter_table, &stats_meter_table_params);
}
void
nfp_flower_stats_meter_request_all(struct nfp_flower_priv *fl_priv)
{
struct nfp_meter_entry *meter_entry = NULL;
struct rhashtable_iter iter;
mutex_lock(&fl_priv->meter_stats_lock);
rhashtable_walk_enter(&fl_priv->meter_table, &iter);
rhashtable_walk_start(&iter);
while ((meter_entry = rhashtable_walk_next(&iter)) != NULL) {
if (IS_ERR(meter_entry))
continue;
nfp_flower_stats_rlim_request(fl_priv,
meter_entry->meter_id, false);
}
rhashtable_walk_stop(&iter);
rhashtable_walk_exit(&iter);
mutex_unlock(&fl_priv->meter_stats_lock);
}
static int
nfp_act_install_actions(struct nfp_app *app, struct flow_offload_action *fl_act,
struct netlink_ext_ack *extack)
{
struct flow_action_entry *paction = &fl_act->action.entries[0];
u32 action_num = fl_act->action.num_entries;
struct nfp_flower_priv *fl_priv = app->priv;
struct flow_action_entry *action = NULL;
u32 burst, i, meter_id;
bool pps_support, pps;
bool add = false;
u64 rate;
int err;
pps_support = !!(fl_priv->flower_ext_feats & NFP_FL_FEATS_QOS_PPS);
for (i = 0 ; i < action_num; i++) {
/* Set qos associate data for this interface */
action = paction + i;
if (action->id != FLOW_ACTION_POLICE) {
NL_SET_ERR_MSG_MOD(extack,
"unsupported offload: qos rate limit offload requires police action");
continue;
}
err = nfp_policer_validate(&fl_act->action, action, extack, false);
if (err)
return err;
if (action->police.rate_bytes_ps > 0) {
rate = action->police.rate_bytes_ps;
burst = action->police.burst;
} else if (action->police.rate_pkt_ps > 0 && pps_support) {
rate = action->police.rate_pkt_ps;
burst = action->police.burst_pkt;
} else {
NL_SET_ERR_MSG_MOD(extack,
"unsupported offload: unsupported qos rate limit");
continue;
}
if (rate != 0) {
meter_id = action->hw_index;
if (nfp_flower_setup_meter_entry(app, action, NFP_METER_ADD, meter_id))
continue;
pps = false;
if (action->police.rate_pkt_ps > 0)
pps = true;
nfp_flower_offload_one_police(app, false, pps, meter_id,
rate, burst);
add = true;
}
}
return add ? 0 : -EOPNOTSUPP;
}
static int
nfp_act_remove_actions(struct nfp_app *app, struct flow_offload_action *fl_act,
struct netlink_ext_ack *extack)
{
struct nfp_meter_entry *meter_entry = NULL;
struct nfp_police_config *config;
struct sk_buff *skb;
u32 meter_id;
bool pps;
/* Delete qos associate data for this interface */
if (fl_act->id != FLOW_ACTION_POLICE) {
NL_SET_ERR_MSG_MOD(extack,
"unsupported offload: qos rate limit offload requires police action");
return -EOPNOTSUPP;
}
meter_id = fl_act->index;
meter_entry = nfp_flower_search_meter_entry(app, meter_id);
if (!meter_entry) {
NL_SET_ERR_MSG_MOD(extack,
"no meter entry when delete the action index.");
return -ENOENT;
}
pps = !meter_entry->bps;
skb = nfp_flower_cmsg_alloc(app, sizeof(struct nfp_police_config),
NFP_FLOWER_CMSG_TYPE_QOS_DEL, GFP_KERNEL);
if (!skb)
return -ENOMEM;
config = nfp_flower_cmsg_get_data(skb);
memset(config, 0, sizeof(struct nfp_police_config));
config->head.flags_opts = cpu_to_be32(NFP_FL_QOS_METER);
config->head.meter_id = cpu_to_be32(meter_id);
if (pps)
config->head.flags_opts |= cpu_to_be32(NFP_FL_QOS_PPS);
nfp_ctrl_tx(app->ctrl, skb);
nfp_flower_setup_meter_entry(app, NULL, NFP_METER_DEL, meter_id);
return 0;
}
void
nfp_act_stats_reply(struct nfp_app *app, void *pmsg)
{
struct nfp_flower_priv *fl_priv = app->priv;
struct nfp_meter_entry *meter_entry = NULL;
struct nfp_police_stats_reply *msg = pmsg;
u32 meter_id;
meter_id = be32_to_cpu(msg->head.meter_id);
mutex_lock(&fl_priv->meter_stats_lock);
meter_entry = nfp_flower_search_meter_entry(app, meter_id);
if (!meter_entry)
goto exit_unlock;
meter_entry->stats.curr.pkts = be64_to_cpu(msg->pass_pkts) +
be64_to_cpu(msg->drop_pkts);
meter_entry->stats.curr.bytes = be64_to_cpu(msg->pass_bytes) +
be64_to_cpu(msg->drop_bytes);
meter_entry->stats.curr.drops = be64_to_cpu(msg->drop_pkts);
if (!meter_entry->stats.update) {
meter_entry->stats.prev.pkts = meter_entry->stats.curr.pkts;
meter_entry->stats.prev.bytes = meter_entry->stats.curr.bytes;
meter_entry->stats.prev.drops = meter_entry->stats.curr.drops;
}
meter_entry->stats.update = jiffies;
exit_unlock:
mutex_unlock(&fl_priv->meter_stats_lock);
}
static int
nfp_act_stats_actions(struct nfp_app *app, struct flow_offload_action *fl_act,
struct netlink_ext_ack *extack)
{
struct nfp_flower_priv *fl_priv = app->priv;
struct nfp_meter_entry *meter_entry = NULL;
u64 diff_bytes, diff_pkts, diff_drops;
int err = 0;
if (fl_act->id != FLOW_ACTION_POLICE) {
NL_SET_ERR_MSG_MOD(extack,
"unsupported offload: qos rate limit offload requires police action");
return -EOPNOTSUPP;
}
mutex_lock(&fl_priv->meter_stats_lock);
meter_entry = nfp_flower_search_meter_entry(app, fl_act->index);
if (!meter_entry) {
err = -ENOENT;
goto exit_unlock;
}
diff_pkts = meter_entry->stats.curr.pkts > meter_entry->stats.prev.pkts ?
meter_entry->stats.curr.pkts - meter_entry->stats.prev.pkts : 0;
diff_bytes = meter_entry->stats.curr.bytes > meter_entry->stats.prev.bytes ?
meter_entry->stats.curr.bytes - meter_entry->stats.prev.bytes : 0;
diff_drops = meter_entry->stats.curr.drops > meter_entry->stats.prev.drops ?
meter_entry->stats.curr.drops - meter_entry->stats.prev.drops : 0;
flow_stats_update(&fl_act->stats, diff_bytes, diff_pkts, diff_drops,
meter_entry->stats.update,
FLOW_ACTION_HW_STATS_DELAYED);
meter_entry->stats.prev.pkts = meter_entry->stats.curr.pkts;
meter_entry->stats.prev.bytes = meter_entry->stats.curr.bytes;
meter_entry->stats.prev.drops = meter_entry->stats.curr.drops;
exit_unlock:
mutex_unlock(&fl_priv->meter_stats_lock);
return err;
}
int nfp_setup_tc_act_offload(struct nfp_app *app,
struct flow_offload_action *fl_act)
{
struct netlink_ext_ack *extack = fl_act->extack;
struct nfp_flower_priv *fl_priv = app->priv;
if (!(fl_priv->flower_ext_feats & NFP_FL_FEATS_QOS_METER))
return -EOPNOTSUPP;
switch (fl_act->command) {
case FLOW_ACT_REPLACE:
return nfp_act_install_actions(app, fl_act, extack);
case FLOW_ACT_DESTROY:
return nfp_act_remove_actions(app, fl_act, extack);
case FLOW_ACT_STATS:
return nfp_act_stats_actions(app, fl_act, extack);
default:
return -EOPNOTSUPP;
}
}
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