882 lines
25 KiB
C
882 lines
25 KiB
C
// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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/* Copyright (C) 2019 Netronome Systems, Inc. */
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#include <linux/hash.h>
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#include <linux/hashtable.h>
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#include <linux/jhash.h>
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#include <linux/math64.h>
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#include <linux/vmalloc.h>
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#include <net/pkt_cls.h>
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#include <net/pkt_sched.h>
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#include "cmsg.h"
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#include "main.h"
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#include "../nfp_port.h"
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#define NFP_FL_QOS_UPDATE msecs_to_jiffies(1000)
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#define NFP_FL_QOS_PPS BIT(15)
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#define NFP_FL_QOS_METER BIT(10)
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struct nfp_police_cfg_head {
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__be32 flags_opts;
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union {
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__be32 meter_id;
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__be32 port;
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};
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};
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enum NFP_FL_QOS_TYPES {
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NFP_FL_QOS_TYPE_BPS,
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NFP_FL_QOS_TYPE_PPS,
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NFP_FL_QOS_TYPE_MAX,
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};
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/* Police cmsg for configuring a trTCM traffic conditioner (8W/32B)
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* See RFC 2698 for more details.
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* ----------------------------------------------------------------
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* 3 2 1
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* 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
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Reserved |p| Reserved |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Port Ingress |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Token Bucket Peak |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Token Bucket Committed |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Peak Burst Size |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Committed Burst Size |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Peak Information Rate |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Committed Information Rate |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* Word[0](FLag options):
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* [15] p(pps) 1 for pps, 0 for bps
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*
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* Meter control message
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* 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
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* +-------------------------------+-+---+-----+-+---------+-+---+-+
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* | Reserved |p| Y |TYPE |E|TSHFV |P| PC|R|
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* +-------------------------------+-+---+-----+-+---------+-+---+-+
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* | meter ID |
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* +-------------------------------+-------------------------------+
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*
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*/
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struct nfp_police_config {
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struct nfp_police_cfg_head head;
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__be32 bkt_tkn_p;
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__be32 bkt_tkn_c;
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__be32 pbs;
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__be32 cbs;
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__be32 pir;
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__be32 cir;
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};
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struct nfp_police_stats_reply {
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struct nfp_police_cfg_head head;
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__be64 pass_bytes;
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__be64 pass_pkts;
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__be64 drop_bytes;
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__be64 drop_pkts;
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};
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int nfp_flower_offload_one_police(struct nfp_app *app, bool ingress,
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bool pps, u32 id, u32 rate, u32 burst)
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{
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struct nfp_police_config *config;
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struct sk_buff *skb;
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skb = nfp_flower_cmsg_alloc(app, sizeof(struct nfp_police_config),
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NFP_FLOWER_CMSG_TYPE_QOS_MOD, GFP_KERNEL);
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if (!skb)
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return -ENOMEM;
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config = nfp_flower_cmsg_get_data(skb);
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memset(config, 0, sizeof(struct nfp_police_config));
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if (pps)
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config->head.flags_opts |= cpu_to_be32(NFP_FL_QOS_PPS);
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if (!ingress)
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config->head.flags_opts |= cpu_to_be32(NFP_FL_QOS_METER);
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if (ingress)
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config->head.port = cpu_to_be32(id);
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else
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config->head.meter_id = cpu_to_be32(id);
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config->bkt_tkn_p = cpu_to_be32(burst);
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config->bkt_tkn_c = cpu_to_be32(burst);
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config->pbs = cpu_to_be32(burst);
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config->cbs = cpu_to_be32(burst);
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config->pir = cpu_to_be32(rate);
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config->cir = cpu_to_be32(rate);
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nfp_ctrl_tx(app->ctrl, skb);
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return 0;
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}
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static int nfp_policer_validate(const struct flow_action *action,
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const struct flow_action_entry *act,
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struct netlink_ext_ack *extack,
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bool ingress)
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{
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if (act->police.exceed.act_id != FLOW_ACTION_DROP) {
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NL_SET_ERR_MSG_MOD(extack,
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"Offload not supported when exceed action is not drop");
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return -EOPNOTSUPP;
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}
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if (ingress) {
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if (act->police.notexceed.act_id != FLOW_ACTION_CONTINUE &&
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act->police.notexceed.act_id != FLOW_ACTION_ACCEPT) {
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NL_SET_ERR_MSG_MOD(extack,
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"Offload not supported when conform action is not continue or ok");
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return -EOPNOTSUPP;
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}
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} else {
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if (act->police.notexceed.act_id != FLOW_ACTION_PIPE &&
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act->police.notexceed.act_id != FLOW_ACTION_ACCEPT) {
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NL_SET_ERR_MSG_MOD(extack,
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"Offload not supported when conform action is not pipe or ok");
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return -EOPNOTSUPP;
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}
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}
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if (act->police.notexceed.act_id == FLOW_ACTION_ACCEPT &&
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!flow_action_is_last_entry(action, act)) {
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NL_SET_ERR_MSG_MOD(extack,
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"Offload not supported when conform action is ok, but action is not last");
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return -EOPNOTSUPP;
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}
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if (act->police.peakrate_bytes_ps ||
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act->police.avrate || act->police.overhead) {
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NL_SET_ERR_MSG_MOD(extack,
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"Offload not supported when peakrate/avrate/overhead is configured");
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return -EOPNOTSUPP;
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}
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return 0;
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}
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static int
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nfp_flower_install_rate_limiter(struct nfp_app *app, struct net_device *netdev,
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struct tc_cls_matchall_offload *flow,
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struct netlink_ext_ack *extack)
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{
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struct flow_action_entry *paction = &flow->rule->action.entries[0];
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u32 action_num = flow->rule->action.num_entries;
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struct nfp_flower_priv *fl_priv = app->priv;
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struct flow_action_entry *action = NULL;
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struct nfp_flower_repr_priv *repr_priv;
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u32 netdev_port_id, i;
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struct nfp_repr *repr;
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bool pps_support;
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u32 bps_num = 0;
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u32 pps_num = 0;
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u32 burst;
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bool pps;
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u64 rate;
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int err;
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if (!nfp_netdev_is_nfp_repr(netdev)) {
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NL_SET_ERR_MSG_MOD(extack, "unsupported offload: qos rate limit offload not supported on higher level port");
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return -EOPNOTSUPP;
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}
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repr = netdev_priv(netdev);
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repr_priv = repr->app_priv;
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netdev_port_id = nfp_repr_get_port_id(netdev);
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pps_support = !!(fl_priv->flower_ext_feats & NFP_FL_FEATS_QOS_PPS);
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if (repr_priv->block_shared) {
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NL_SET_ERR_MSG_MOD(extack, "unsupported offload: qos rate limit offload not supported on shared blocks");
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return -EOPNOTSUPP;
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}
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if (repr->port->type != NFP_PORT_VF_PORT) {
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NL_SET_ERR_MSG_MOD(extack, "unsupported offload: qos rate limit offload not supported on non-VF ports");
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return -EOPNOTSUPP;
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}
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if (pps_support) {
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if (action_num > 2 || action_num == 0) {
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NL_SET_ERR_MSG_MOD(extack,
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"unsupported offload: qos rate limit offload only support action number 1 or 2");
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return -EOPNOTSUPP;
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}
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} else {
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if (!flow_offload_has_one_action(&flow->rule->action)) {
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NL_SET_ERR_MSG_MOD(extack,
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"unsupported offload: qos rate limit offload requires a single action");
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return -EOPNOTSUPP;
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}
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}
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if (flow->common.prio != 1) {
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NL_SET_ERR_MSG_MOD(extack, "unsupported offload: qos rate limit offload requires highest priority");
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return -EOPNOTSUPP;
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}
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for (i = 0 ; i < action_num; i++) {
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action = paction + i;
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if (action->id != FLOW_ACTION_POLICE) {
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NL_SET_ERR_MSG_MOD(extack,
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"unsupported offload: qos rate limit offload requires police action");
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return -EOPNOTSUPP;
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}
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err = nfp_policer_validate(&flow->rule->action, action, extack, true);
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if (err)
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return err;
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if (action->police.rate_bytes_ps > 0) {
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if (bps_num++) {
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NL_SET_ERR_MSG_MOD(extack,
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"unsupported offload: qos rate limit offload only support one BPS action");
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return -EOPNOTSUPP;
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}
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}
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if (action->police.rate_pkt_ps > 0) {
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if (!pps_support) {
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NL_SET_ERR_MSG_MOD(extack,
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"unsupported offload: FW does not support PPS action");
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return -EOPNOTSUPP;
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}
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if (pps_num++) {
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NL_SET_ERR_MSG_MOD(extack,
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"unsupported offload: qos rate limit offload only support one PPS action");
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return -EOPNOTSUPP;
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}
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}
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}
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for (i = 0 ; i < action_num; i++) {
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/* Set QoS data for this interface */
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action = paction + i;
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if (action->police.rate_bytes_ps > 0) {
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rate = action->police.rate_bytes_ps;
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burst = action->police.burst;
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} else if (action->police.rate_pkt_ps > 0) {
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rate = action->police.rate_pkt_ps;
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burst = action->police.burst_pkt;
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} else {
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NL_SET_ERR_MSG_MOD(extack,
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"unsupported offload: qos rate limit is not BPS or PPS");
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continue;
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}
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if (rate != 0) {
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pps = false;
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if (action->police.rate_pkt_ps > 0)
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pps = true;
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nfp_flower_offload_one_police(repr->app, true,
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pps, netdev_port_id,
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rate, burst);
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}
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}
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repr_priv->qos_table.netdev_port_id = netdev_port_id;
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fl_priv->qos_rate_limiters++;
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if (fl_priv->qos_rate_limiters == 1)
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schedule_delayed_work(&fl_priv->qos_stats_work,
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NFP_FL_QOS_UPDATE);
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return 0;
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}
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static int
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nfp_flower_remove_rate_limiter(struct nfp_app *app, struct net_device *netdev,
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struct tc_cls_matchall_offload *flow,
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struct netlink_ext_ack *extack)
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{
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struct nfp_flower_priv *fl_priv = app->priv;
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struct nfp_flower_repr_priv *repr_priv;
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struct nfp_police_config *config;
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u32 netdev_port_id, i;
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struct nfp_repr *repr;
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struct sk_buff *skb;
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bool pps_support;
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if (!nfp_netdev_is_nfp_repr(netdev)) {
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NL_SET_ERR_MSG_MOD(extack, "unsupported offload: qos rate limit offload not supported on higher level port");
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return -EOPNOTSUPP;
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}
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repr = netdev_priv(netdev);
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netdev_port_id = nfp_repr_get_port_id(netdev);
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repr_priv = repr->app_priv;
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pps_support = !!(fl_priv->flower_ext_feats & NFP_FL_FEATS_QOS_PPS);
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if (!repr_priv->qos_table.netdev_port_id) {
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NL_SET_ERR_MSG_MOD(extack, "unsupported offload: cannot remove qos entry that does not exist");
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return -EOPNOTSUPP;
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}
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memset(&repr_priv->qos_table, 0, sizeof(struct nfp_fl_qos));
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fl_priv->qos_rate_limiters--;
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if (!fl_priv->qos_rate_limiters)
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cancel_delayed_work_sync(&fl_priv->qos_stats_work);
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for (i = 0 ; i < NFP_FL_QOS_TYPE_MAX; i++) {
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if (i == NFP_FL_QOS_TYPE_PPS && !pps_support)
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break;
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/* 0:bps 1:pps
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* Clear QoS data for this interface.
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* There is no need to check if a specific QOS_TYPE was
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* configured as the firmware handles clearing a QoS entry
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* safely, even if it wasn't explicitly added.
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*/
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skb = nfp_flower_cmsg_alloc(repr->app, sizeof(struct nfp_police_config),
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NFP_FLOWER_CMSG_TYPE_QOS_DEL, GFP_KERNEL);
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if (!skb)
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return -ENOMEM;
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config = nfp_flower_cmsg_get_data(skb);
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memset(config, 0, sizeof(struct nfp_police_config));
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if (i == NFP_FL_QOS_TYPE_PPS)
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config->head.flags_opts = cpu_to_be32(NFP_FL_QOS_PPS);
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config->head.port = cpu_to_be32(netdev_port_id);
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nfp_ctrl_tx(repr->app->ctrl, skb);
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}
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return 0;
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}
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void nfp_flower_stats_rlim_reply(struct nfp_app *app, struct sk_buff *skb)
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{
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struct nfp_flower_priv *fl_priv = app->priv;
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struct nfp_flower_repr_priv *repr_priv;
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struct nfp_police_stats_reply *msg;
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struct nfp_stat_pair *curr_stats;
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struct nfp_stat_pair *prev_stats;
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struct net_device *netdev;
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struct nfp_repr *repr;
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u32 netdev_port_id;
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msg = nfp_flower_cmsg_get_data(skb);
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if (be32_to_cpu(msg->head.flags_opts) & NFP_FL_QOS_METER)
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return nfp_act_stats_reply(app, msg);
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netdev_port_id = be32_to_cpu(msg->head.port);
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rcu_read_lock();
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netdev = nfp_app_dev_get(app, netdev_port_id, NULL);
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if (!netdev)
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goto exit_unlock_rcu;
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repr = netdev_priv(netdev);
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repr_priv = repr->app_priv;
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curr_stats = &repr_priv->qos_table.curr_stats;
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prev_stats = &repr_priv->qos_table.prev_stats;
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spin_lock_bh(&fl_priv->qos_stats_lock);
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curr_stats->pkts = be64_to_cpu(msg->pass_pkts) +
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be64_to_cpu(msg->drop_pkts);
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curr_stats->bytes = be64_to_cpu(msg->pass_bytes) +
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be64_to_cpu(msg->drop_bytes);
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if (!repr_priv->qos_table.last_update) {
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prev_stats->pkts = curr_stats->pkts;
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prev_stats->bytes = curr_stats->bytes;
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}
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repr_priv->qos_table.last_update = jiffies;
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spin_unlock_bh(&fl_priv->qos_stats_lock);
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exit_unlock_rcu:
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rcu_read_unlock();
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}
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static void
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nfp_flower_stats_rlim_request(struct nfp_flower_priv *fl_priv,
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u32 id, bool ingress)
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{
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struct nfp_police_cfg_head *head;
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struct sk_buff *skb;
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skb = nfp_flower_cmsg_alloc(fl_priv->app,
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sizeof(struct nfp_police_cfg_head),
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NFP_FLOWER_CMSG_TYPE_QOS_STATS,
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GFP_ATOMIC);
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if (!skb)
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return;
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head = nfp_flower_cmsg_get_data(skb);
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memset(head, 0, sizeof(struct nfp_police_cfg_head));
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if (ingress) {
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head->port = cpu_to_be32(id);
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} else {
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head->flags_opts = cpu_to_be32(NFP_FL_QOS_METER);
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head->meter_id = cpu_to_be32(id);
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}
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nfp_ctrl_tx(fl_priv->app->ctrl, skb);
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}
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static void
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nfp_flower_stats_rlim_request_all(struct nfp_flower_priv *fl_priv)
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{
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struct nfp_reprs *repr_set;
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int i;
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rcu_read_lock();
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repr_set = rcu_dereference(fl_priv->app->reprs[NFP_REPR_TYPE_VF]);
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if (!repr_set)
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goto exit_unlock_rcu;
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for (i = 0; i < repr_set->num_reprs; i++) {
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struct net_device *netdev;
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netdev = rcu_dereference(repr_set->reprs[i]);
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if (netdev) {
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struct nfp_repr *priv = netdev_priv(netdev);
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struct nfp_flower_repr_priv *repr_priv;
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u32 netdev_port_id;
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repr_priv = priv->app_priv;
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netdev_port_id = repr_priv->qos_table.netdev_port_id;
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if (!netdev_port_id)
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continue;
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nfp_flower_stats_rlim_request(fl_priv,
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netdev_port_id, true);
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}
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}
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exit_unlock_rcu:
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rcu_read_unlock();
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}
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static void update_stats_cache(struct work_struct *work)
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{
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struct delayed_work *delayed_work;
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struct nfp_flower_priv *fl_priv;
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delayed_work = to_delayed_work(work);
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fl_priv = container_of(delayed_work, struct nfp_flower_priv,
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qos_stats_work);
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nfp_flower_stats_rlim_request_all(fl_priv);
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nfp_flower_stats_meter_request_all(fl_priv);
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|
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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;
|
|
}
|
|
}
|