Файловый менеджер

Файловый менеджер - Редактировать - /usr/src/linux-headers-5.4.0-200/include/net/pkt_sched.h

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/* SPDX-License-Identifier: GPL-2.0 / #ifndef __NET_PKT_SCHED_H #define __NET_PKT_SCHED_H #include <linux/jiffies.h> #include <linux/ktime.h> #include <linux/if_vlan.h> #include <linux/netdevice.h> #include <net/sch_generic.h> #include <net/net_namespace.h> #include <uapi/linux/pkt_sched.h> #define DEFAULT_TX_QUEUE_LEN 1000 #define STAB_SIZE_LOG_MAX 30 struct qdisc_walker { int stop; int skip; int count; int (fn)(struct Qdisc , unsigned long cl, struct qdisc_walker ); }; #define QDISC_ALIGNTO 64 #define QDISC_ALIGN(len) (((len) + QDISC_ALIGNTO-1) & ~(QDISC_ALIGNTO-1)) static inline void qdisc_priv(struct Qdisc q) { return (char ) q + QDISC_ALIGN(sizeof(struct Qdisc)); } / Timer resolution MUST BE < 10% of min_schedulable_packet_size/bandwidth Normal IP packet size ~ 512byte, hence: 0.5Kbyte/1Mbyte/sec = 0.5msec, so that we need 50usec timer for 10Mbit ethernet. 10msec resolution -> <50Kbit/sec. The result: [34]86 is not good choice for QoS router :-( The things are not so bad, because we may use artificial clock evaluated by integration of network data flow in the most critical places. / typedef u64 psched_time_t; typedef long psched_tdiff_t; / Avoid doing 64 bit divide / #define PSCHED_SHIFT 6 #define PSCHED_TICKS2NS(x) ((s64)(x) << PSCHED_SHIFT) #define PSCHED_NS2TICKS(x) ((x) >> PSCHED_SHIFT) #define PSCHED_TICKS_PER_SEC PSCHED_NS2TICKS(NSEC_PER_SEC) #define PSCHED_PASTPERFECT 0 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; }; void qdisc_watchdog_init_clockid(struct qdisc_watchdog wd, struct Qdisc qdisc, clockid_t clockid); void qdisc_watchdog_init(struct qdisc_watchdog wd, struct Qdisc qdisc); void qdisc_watchdog_schedule_ns(struct qdisc_watchdog wd, u64 expires); static inline void qdisc_watchdog_schedule(struct qdisc_watchdog wd, psched_time_t expires) { qdisc_watchdog_schedule_ns(wd, PSCHED_TICKS2NS(expires)); } void qdisc_watchdog_cancel(struct qdisc_watchdog wd); extern struct Qdisc_ops pfifo_qdisc_ops; extern struct Qdisc_ops bfifo_qdisc_ops; extern struct Qdisc_ops pfifo_head_drop_qdisc_ops; int fifo_set_limit(struct Qdisc q, unsigned int limit); struct Qdisc fifo_create_dflt(struct Qdisc sch, struct Qdisc_ops ops, unsigned int limit, struct netlink_ext_ack extack); int register_qdisc(struct Qdisc_ops qops); int unregister_qdisc(struct Qdisc_ops qops); void qdisc_get_default(char id, size_t len); int qdisc_set_default(const char id); void qdisc_hash_add(struct Qdisc q, bool invisible); void qdisc_hash_del(struct Qdisc q); struct Qdisc qdisc_lookup(struct net_device dev, u32 handle); struct Qdisc qdisc_lookup_rcu(struct net_device dev, u32 handle); struct qdisc_rate_table qdisc_get_rtab(struct tc_ratespec r, struct nlattr tab, struct netlink_ext_ack extack); void qdisc_put_rtab(struct qdisc_rate_table tab); void qdisc_put_stab(struct qdisc_size_table tab); void qdisc_warn_nonwc(const char txt, struct Qdisc qdisc); bool sch_direct_xmit(struct sk_buff skb, struct Qdisc q, struct net_device dev, struct netdev_queue txq, spinlock_t root_lock, bool validate); void __qdisc_run(struct Qdisc q); static inline void qdisc_run(struct Qdisc q) { if (qdisc_run_begin(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 READ_ONCE(dev->mtu) + dev->hard_header_len; } static inline struct net qdisc_net(struct Qdisc q) { return dev_net(q->dev_queue->dev); } struct tc_cbs_qopt_offload { u8 enable; s32 queue; s32 hicredit; s32 locredit; s32 idleslope; s32 sendslope; }; struct tc_etf_qopt_offload { u8 enable; s32 queue; }; struct tc_taprio_sched_entry { u8 command; /* TC_TAPRIO_CMD_* / / The gate_mask in the offloading side refers to traffic classes / u32 gate_mask; u32 interval; }; 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[0]; }; / 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); #endif

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