diff options
Diffstat (limited to 'drivers/net/ethernet/netronome/nfp/abm/main.h')
| -rw-r--r-- | drivers/net/ethernet/netronome/nfp/abm/main.h | 208 |
1 files changed, 185 insertions, 23 deletions
diff --git a/drivers/net/ethernet/netronome/nfp/abm/main.h b/drivers/net/ethernet/netronome/nfp/abm/main.h index f907b7d98917..49749c60885e 100644 --- a/drivers/net/ethernet/netronome/nfp/abm/main.h +++ b/drivers/net/ethernet/netronome/nfp/abm/main.h @@ -4,7 +4,19 @@ #ifndef __NFP_ABM_H__ #define __NFP_ABM_H__ 1 +#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 (2500 * 1000) /* ns */ + +#define NFP_ABM_LVL_INFINITY S32_MAX struct nfp_app; struct nfp_net; @@ -12,21 +24,64 @@ struct nfp_net; #define NFP_ABM_PORTID_TYPE GENMASK(23, 16) #define NFP_ABM_PORTID_ID GENMASK(7, 0) +/* The possible actions if thresholds are exceeded */ +enum nfp_abm_q_action { + /* mark if ECN capable, otherwise drop */ + NFP_ABM_ACT_MARK_DROP = 0, + /* mark if ECN capable, otherwise goto QM */ + NFP_ABM_ACT_MARK_QUEUE = 1, + NFP_ABM_ACT_DROP = 2, + NFP_ABM_ACT_QUEUE = 3, + NFP_ABM_ACT_NOQUEUE = 4, +}; + /** * 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_app *app; unsigned int pf_id; + + unsigned int red_support; + unsigned int num_prios; + unsigned int num_bands; + unsigned int action_mask; + + u32 *thresholds; + unsigned long *threshold_undef; + u8 *actions; + size_t num_thresholds; + + unsigned int prio_map_len; + u8 dscp_mask; + enum devlink_eswitch_mode eswitch_mode; + const struct nfp_rtsym *q_lvls; const struct nfp_rtsym *qm_stats; + const struct nfp_rtsym *q_stats; }; /** @@ -57,16 +112,76 @@ struct nfp_alink_xstats { u64 pdrop; }; +enum nfp_qdisc_type { + NFP_QDISC_NONE = 0, + NFP_QDISC_MQ, + NFP_QDISC_RED, + NFP_QDISC_GRED, +}; + +#define NFP_QDISC_UNTRACKED ((struct nfp_qdisc *)1UL) + /** - * 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_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_red_qdisc { +struct nfp_qdisc { + struct net_device *netdev; + enum nfp_qdisc_type type; u32 handle; - struct nfp_alink_stats stats; - struct nfp_alink_xstats xstats; + u32 parent_handle; + unsigned int use_cnt; + unsigned int num_children; + struct nfp_qdisc **children; + + bool params_ok; + bool offload_mark; + bool offloaded; + + union { + /* NFP_QDISC_MQ */ + struct { + struct nfp_alink_stats stats; + struct nfp_alink_stats prev_stats; + } mq; + /* TC_SETUP_QDISC_RED, TC_SETUP_QDISC_GRED */ + struct { + unsigned int num_bands; + + struct { + bool ecn; + u32 threshold; + struct nfp_alink_stats stats; + struct nfp_alink_stats prev_stats; + struct nfp_alink_xstats xstats; + struct nfp_alink_xstats prev_xstats; + } band[MAX_DPs]; + } red; + }; }; /** @@ -76,9 +191,17 @@ struct nfp_red_qdisc { * @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 + * + * @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 { struct nfp_abm *abm; @@ -86,26 +209,65 @@ struct nfp_abm_link { unsigned int id; unsigned int queue_base; unsigned int total_queues; - u32 parent; - unsigned int num_qdiscs; - struct nfp_red_qdisc *qdiscs; + + u64 last_stats_update; + + u32 *prio_map; + bool has_prio; + + u8 def_band; + struct list_head dscp_map; + + struct nfp_qdisc *root_qdisc; + struct radix_tree_root qdiscs; }; -void nfp_abm_ctrl_read_params(struct nfp_abm_link *alink); +static inline bool nfp_abm_has_prio(struct nfp_abm *abm) +{ + return abm->num_bands > 1; +} + +static inline bool nfp_abm_has_drop(struct nfp_abm *abm) +{ + return abm->action_mask & BIT(NFP_ABM_ACT_DROP); +} + +static inline bool nfp_abm_has_mark(struct nfp_abm *abm) +{ + return abm->action_mask & BIT(NFP_ABM_ACT_MARK_DROP); +} + +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 tc_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_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, +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_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, +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 |