diff options
Diffstat (limited to 'include/net/pkt_sched.h')
| -rw-r--r-- | include/net/pkt_sched.h | 155 |
1 files changed, 131 insertions, 24 deletions
diff --git a/include/net/pkt_sched.h b/include/net/pkt_sched.h index 4ed32e6b0201..d7b7b6cd4aa1 100644 --- a/include/net/pkt_sched.h +++ b/include/net/pkt_sched.h @@ -11,6 +11,7 @@ #include <uapi/linux/pkt_sched.h> #define DEFAULT_TX_QUEUE_LEN 1000 +#define STAB_SIZE_LOG_MAX 30 struct qdisc_walker { int stop; @@ -19,9 +20,14 @@ struct qdisc_walker { int (*fn)(struct Qdisc *, unsigned long cl, struct qdisc_walker *); }; -static inline void *qdisc_priv(struct Qdisc *q) +#define qdisc_priv(q) \ + _Generic(q, \ + const struct Qdisc * : (const void *)&q->privdata, \ + struct Qdisc * : (void *)&q->privdata) + +static inline struct Qdisc *qdisc_from_priv(void *priv) { - return &q->privdata; + return container_of(priv, struct Qdisc, privdata); } /* @@ -57,14 +63,7 @@ static inline psched_time_t psched_get_time(void) return PSCHED_NS2TICKS(ktime_get_ns()); } -static inline psched_tdiff_t -psched_tdiff_bounded(psched_time_t tv1, psched_time_t tv2, psched_time_t bound) -{ - return min(tv1 - tv2, bound); -} - struct qdisc_watchdog { - u64 last_expires; struct hrtimer timer; struct Qdisc *qdisc; }; @@ -100,7 +99,9 @@ struct Qdisc *fifo_create_dflt(struct Qdisc *sch, struct Qdisc_ops *ops, struct netlink_ext_ack *extack); int register_qdisc(struct Qdisc_ops *qops); -int unregister_qdisc(struct Qdisc_ops *qops); +void unregister_qdisc(struct Qdisc_ops *qops); +#define NET_SCH_ALIAS_PREFIX "net-sch-" +#define MODULE_ALIAS_NET_SCH(id) MODULE_ALIAS(NET_SCH_ALIAS_PREFIX id) void qdisc_get_default(char *id, size_t len); int qdisc_set_default(const char *id); @@ -123,22 +124,19 @@ void __qdisc_run(struct Qdisc *q); static inline void qdisc_run(struct Qdisc *q) { if (qdisc_run_begin(q)) { - /* NOLOCK qdisc must check 'state' under the qdisc seqlock - * to avoid racing with dev_qdisc_reset() - */ - if (!(q->flags & TCQ_F_NOLOCK) || - likely(!test_bit(__QDISC_STATE_DEACTIVATED, &q->state))) - __qdisc_run(q); + __qdisc_run(q); qdisc_run_end(q); } } +extern const struct nla_policy rtm_tca_policy[TCA_MAX + 1]; + /* Calculate maximal size of packet seen by hard_start_xmit routine of this device. */ static inline unsigned int psched_mtu(const struct net_device *dev) { - return dev->mtu + dev->hard_header_len; + return READ_ONCE(dev->mtu) + dev->hard_header_len; } static inline struct net *qdisc_net(struct Qdisc *q) @@ -146,6 +144,11 @@ static inline struct net *qdisc_net(struct Qdisc *q) return dev_net(q->dev_queue->dev); } +struct tc_query_caps_base { + enum tc_setup_type type; + void *caps; +}; + struct tc_cbs_qopt_offload { u8 enable; s32 queue; @@ -160,6 +163,58 @@ struct tc_etf_qopt_offload { s32 queue; }; +struct tc_mqprio_caps { + bool validate_queue_counts:1; +}; + +struct tc_mqprio_qopt_offload { + /* struct tc_mqprio_qopt must always be the first element */ + struct tc_mqprio_qopt qopt; + struct netlink_ext_ack *extack; + u16 mode; + u16 shaper; + u32 flags; + u64 min_rate[TC_QOPT_MAX_QUEUE]; + u64 max_rate[TC_QOPT_MAX_QUEUE]; + unsigned long preemptible_tcs; +}; + +struct tc_taprio_caps { + bool supports_queue_max_sdu:1; + bool gate_mask_per_txq:1; + /* Device expects lower TXQ numbers to have higher priority over higher + * TXQs, regardless of their TC mapping. DO NOT USE FOR NEW DRIVERS, + * INSTEAD ENFORCE A PROPER TC:TXQ MAPPING COMING FROM USER SPACE. + */ + bool broken_mqprio:1; +}; + +enum tc_taprio_qopt_cmd { + TAPRIO_CMD_REPLACE, + TAPRIO_CMD_DESTROY, + TAPRIO_CMD_STATS, + TAPRIO_CMD_QUEUE_STATS, +}; + +/** + * struct tc_taprio_qopt_stats - IEEE 802.1Qbv statistics + * @window_drops: Frames that were dropped because they were too large to be + * transmitted in any of the allotted time windows (open gates) for their + * traffic class. + * @tx_overruns: Frames still being transmitted by the MAC after the + * transmission gate associated with their traffic class has closed. + * Equivalent to `12.29.1.1.2 TransmissionOverrun` from 802.1Q-2018. + */ +struct tc_taprio_qopt_stats { + u64 window_drops; + u64 tx_overruns; +}; + +struct tc_taprio_qopt_queue_stats { + int queue; + struct tc_taprio_qopt_stats stats; +}; + struct tc_taprio_sched_entry { u8 command; /* TC_TAPRIO_CMD_* */ @@ -169,18 +224,70 @@ struct tc_taprio_sched_entry { }; struct tc_taprio_qopt_offload { - u8 enable; - ktime_t base_time; - u64 cycle_time; - u64 cycle_time_extension; - - size_t num_entries; - struct tc_taprio_sched_entry entries[]; + enum tc_taprio_qopt_cmd cmd; + + union { + /* TAPRIO_CMD_STATS */ + struct tc_taprio_qopt_stats stats; + /* TAPRIO_CMD_QUEUE_STATS */ + struct tc_taprio_qopt_queue_stats queue_stats; + /* TAPRIO_CMD_REPLACE */ + struct { + struct tc_mqprio_qopt_offload mqprio; + struct netlink_ext_ack *extack; + ktime_t base_time; + u64 cycle_time; + u64 cycle_time_extension; + u32 max_sdu[TC_MAX_QUEUE]; + + size_t num_entries; + struct tc_taprio_sched_entry entries[]; + }; + }; }; +#if IS_ENABLED(CONFIG_NET_SCH_TAPRIO) + /* Reference counting */ struct tc_taprio_qopt_offload *taprio_offload_get(struct tc_taprio_qopt_offload *offload); void taprio_offload_free(struct tc_taprio_qopt_offload *offload); +#else + +/* Reference counting */ +static inline struct tc_taprio_qopt_offload * +taprio_offload_get(struct tc_taprio_qopt_offload *offload) +{ + return NULL; +} + +static inline void taprio_offload_free(struct tc_taprio_qopt_offload *offload) +{ +} + +#endif + +/* Ensure skb_mstamp_ns, which might have been populated with the txtime, is + * not mistaken for a software timestamp, because this will otherwise prevent + * the dispatch of hardware timestamps to the socket. + */ +static inline void skb_txtime_consumed(struct sk_buff *skb) +{ + skb->tstamp = ktime_set(0, 0); +} + +static inline bool tc_qdisc_stats_dump(struct Qdisc *sch, + unsigned long cl, + struct qdisc_walker *arg) +{ + if (arg->count >= arg->skip && arg->fn(sch, cl, arg) < 0) { + arg->stop = 1; + return false; + } + + arg->count++; + return true; +} + #endif |