Release 4.18 drivers/net/ethernet/netronome/nfp/abm/main.h
/* SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) */
/*
* Copyright (C) 2018 Netronome Systems, Inc.
*
* This software is dual licensed under the GNU General License Version 2,
* June 1991 as shown in the file COPYING in the top-level directory of this
* source tree or the BSD 2-Clause License provided below. You have the
* option to license this software under the complete terms of either license.
*
* The BSD 2-Clause License:
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* 1. Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
*
* 2. Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef __NFP_ABM_H__
#define __NFP_ABM_H__ 1
#include <net/devlink.h>
struct nfp_app;
struct nfp_net;
#define NFP_ABM_PORTID_TYPE GENMASK(23, 16)
#define NFP_ABM_PORTID_ID GENMASK(7, 0)
/**
* struct nfp_abm - ABM NIC app structure
* @app: back pointer to nfp_app
* @pf_id: ID of our PF link
* @eswitch_mode: devlink eswitch mode, advanced functions only visible
* in switchdev mode
* @q_lvls: queue level control area
* @qm_stats: queue statistics symbol
*/
struct nfp_abm {
struct nfp_app *app;
unsigned int pf_id;
enum devlink_eswitch_mode eswitch_mode;
const struct nfp_rtsym *q_lvls;
const struct nfp_rtsym *qm_stats;
};
/**
* struct nfp_alink_stats - ABM NIC statistics
* @tx_pkts: number of TXed packets
* @tx_bytes: number of TXed bytes
* @backlog_pkts: momentary backlog length (packets)
* @backlog_bytes: momentary backlog length (bytes)
* @overlimits: number of ECN marked TXed packets (accumulative)
* @drops: number of tail-dropped packets (accumulative)
*/
struct nfp_alink_stats {
u64 tx_pkts;
u64 tx_bytes;
u64 backlog_pkts;
u64 backlog_bytes;
u64 overlimits;
u64 drops;
};
/**
* struct nfp_alink_xstats - extended ABM NIC statistics
* @ecn_marked: number of ECN marked TXed packets
* @pdrop: number of hard drops due to queue limit
*/
struct nfp_alink_xstats {
u64 ecn_marked;
u64 pdrop;
};
/**
* struct nfp_red_qdisc - representation of single RED Qdisc
* @handle: handle of currently offloaded RED Qdisc
* @stats: statistics from last refresh
* @xstats: base of extended statistics
*/
struct nfp_red_qdisc {
u32 handle;
struct nfp_alink_stats stats;
struct nfp_alink_xstats xstats;
};
/**
* struct nfp_abm_link - port tuple of a ABM NIC
* @abm: back pointer to nfp_abm
* @vnic: data vNIC
* @id: id of the data vNIC
* @queue_base: id of base to host queue within PCIe (not QC idx)
* @total_queues: number of PF queues
* @parent: handle of expected parent, i.e. handle of MQ, or TC_H_ROOT
* @num_qdiscs: number of currently used qdiscs
* @qdiscs: array of qdiscs
*/
struct nfp_abm_link {
struct nfp_abm *abm;
struct nfp_net *vnic;
unsigned int id;
unsigned int queue_base;
unsigned int total_queues;
u32 parent;
unsigned int num_qdiscs;
struct nfp_red_qdisc *qdiscs;
};
void nfp_abm_ctrl_read_params(struct nfp_abm_link *alink);
int nfp_abm_ctrl_find_addrs(struct nfp_abm *abm);
int nfp_abm_ctrl_set_all_q_lvls(struct nfp_abm_link *alink, u32 val);
int nfp_abm_ctrl_set_q_lvl(struct nfp_abm_link *alink, unsigned int i,
u32 val);
int nfp_abm_ctrl_read_stats(struct nfp_abm_link *alink,
struct nfp_alink_stats *stats);
int nfp_abm_ctrl_read_q_stats(struct nfp_abm_link *alink, unsigned int i,
struct nfp_alink_stats *stats);
int nfp_abm_ctrl_read_xstats(struct nfp_abm_link *alink,
struct nfp_alink_xstats *xstats);
int nfp_abm_ctrl_read_q_xstats(struct nfp_abm_link *alink, unsigned int i,
struct nfp_alink_xstats *xstats);
u64 nfp_abm_ctrl_stat_non_sto(struct nfp_abm_link *alink, unsigned int i);
u64 nfp_abm_ctrl_stat_sto(struct nfp_abm_link *alink, unsigned int i);
int nfp_abm_ctrl_qm_enable(struct nfp_abm *abm);
int nfp_abm_ctrl_qm_disable(struct nfp_abm *abm);
#endif
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