/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */ /* Copyright (C) 2018 Netronome Systems, Inc. */ #ifndef __NFP_ABM_H__ #define __NFP_ABM_H__ … #include <linux/bits.h> #include <linux/list.h> #include <linux/radix-tree.h> #include <net/devlink.h> #include <net/pkt_cls.h> #include <net/pkt_sched.h> /* Dump of 64 PRIOs and 256 REDs seems to take 850us on Xeon v4 @ 2.20GHz; * 2.5ms / 400Hz seems more than sufficient for stats resolution. */ #define NFP_ABM_STATS_REFRESH_IVAL … #define NFP_ABM_LVL_INFINITY … struct nfp_app; struct nfp_net; #define NFP_ABM_PORTID_TYPE … #define NFP_ABM_PORTID_ID … /* The possible actions if thresholds are exceeded */ enum nfp_abm_q_action { … }; /** * struct nfp_abm - ABM NIC app structure * @app: back pointer to nfp_app * @pf_id: ID of our PF link * * @red_support: is RED offload supported * @num_prios: number of supported DSCP priorities * @num_bands: number of supported DSCP priority bands * @action_mask: bitmask of supported actions * * @thresholds: current threshold configuration * @threshold_undef: bitmap of thresholds which have not been set * @actions: current FW action configuration * @num_thresholds: number of @thresholds and bits in @threshold_undef * * @prio_map_len: computed length of FW priority map (in bytes) * @dscp_mask: mask FW will apply on DSCP field * * @eswitch_mode: devlink eswitch mode, advanced functions only visible * in switchdev mode * * @q_lvls: queue level control area * @qm_stats: queue statistics symbol * @q_stats: basic queue statistics (only in per-band case) */ struct nfp_abm { … }; /** * 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 { … }; /** * 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 { … }; enum nfp_qdisc_type { … }; #define NFP_QDISC_UNTRACKED … /** * struct nfp_qdisc - tracked TC Qdisc * @netdev: netdev on which Qdisc was created * @type: Qdisc type * @handle: handle of this Qdisc * @parent_handle: handle of the parent (unreliable if Qdisc was grafted) * @use_cnt: number of attachment points in the hierarchy * @num_children: current size of the @children array * @children: pointers to children * * @params_ok: parameters of this Qdisc are OK for offload * @offload_mark: offload refresh state - selected for offload * @offloaded: Qdisc is currently offloaded to the HW * * @mq: MQ Qdisc specific parameters and state * @mq.stats: current stats of the MQ Qdisc * @mq.prev_stats: previously reported @mq.stats * * @red: RED Qdisc specific parameters and state * @red.num_bands: Number of valid entries in the @red.band table * @red.band: Per-band array of RED instances * @red.band.ecn: ECN marking is enabled (rather than drop) * @red.band.threshold: ECN marking threshold * @red.band.stats: current stats of the RED Qdisc * @red.band.prev_stats: previously reported @red.stats * @red.band.xstats: extended stats for RED - current * @red.band.prev_xstats: extended stats for RED - previously reported */ struct nfp_qdisc { … }; /** * 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 * * @last_stats_update: ktime of last stats update * * @prio_map: current map of priorities * @has_prio: @prio_map is valid * * @def_band: default band to use * @dscp_map: list of DSCP to band mappings * * @root_qdisc: pointer to the current root of the Qdisc hierarchy * @qdiscs: all qdiscs recorded by major part of the handle */ struct nfp_abm_link { … }; static inline bool nfp_abm_has_prio(struct nfp_abm *abm) { … } static inline bool nfp_abm_has_drop(struct nfp_abm *abm) { … } static inline bool nfp_abm_has_mark(struct nfp_abm *abm) { … } void nfp_abm_qdisc_offload_update(struct nfp_abm_link *alink); int nfp_abm_setup_root(struct net_device *netdev, struct nfp_abm_link *alink, struct tc_root_qopt_offload *opt); int nfp_abm_setup_tc_red(struct net_device *netdev, struct nfp_abm_link *alink, struct tc_red_qopt_offload *opt); int nfp_abm_setup_tc_mq(struct net_device *netdev, struct nfp_abm_link *alink, struct tc_mq_qopt_offload *opt); int nfp_abm_setup_tc_gred(struct net_device *netdev, struct nfp_abm_link *alink, struct tc_gred_qopt_offload *opt); int nfp_abm_setup_cls_block(struct net_device *netdev, struct nfp_repr *repr, struct flow_block_offload *opt); int 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_q_lvl(struct nfp_abm *abm, unsigned int id, u32 val); int nfp_abm_ctrl_set_q_lvl(struct nfp_abm_link *alink, unsigned int band, unsigned int queue, u32 val); int __nfp_abm_ctrl_set_q_act(struct nfp_abm *abm, unsigned int id, enum nfp_abm_q_action act); int nfp_abm_ctrl_set_q_act(struct nfp_abm_link *alink, unsigned int band, unsigned int queue, enum nfp_abm_q_action act); int nfp_abm_ctrl_read_q_stats(struct nfp_abm_link *alink, unsigned int band, unsigned int queue, struct nfp_alink_stats *stats); int nfp_abm_ctrl_read_q_xstats(struct nfp_abm_link *alink, unsigned int band, unsigned int queue, 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); void nfp_abm_prio_map_update(struct nfp_abm *abm); int nfp_abm_ctrl_prio_map_update(struct nfp_abm_link *alink, u32 *packed); #endif
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