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https://git.kernel.org/pub/scm/network/iproute2/iproute2.git
synced 2024-11-15 22:15:13 +08:00
abf70ef494
Using a 32 bit field to represent time in nanoseconds results in a maximum value of about 4.3 seconds, which is well below many observed delays in WiFi and LTE, and barely in the ballpark for a trip past the Earth's moon, Luna. Using 64 bit time fields in nanoseconds allows us to simulate network diameters of several hundred light-years. However, only conversions to and from ns, us, ms, and seconds are provided. The iproute2 64 bit api uses signed values for time. Being able to represent positive or negative time allows us to calculate +/- deltas between, for example, the CLOCK_TAI and CLOCK_REALTIME clocks. Time related utility functions in tc_util.c are moved to lib/utils.c. Signed-off-by: Yousuk Seung <ysseung@google.com> Signed-off-by: Dave Taht <dave.taht@gmail.com> Signed-off-by: Neal Cardwell <ncardwell@google.com> Signed-off-by: David Ahern <dsahern@gmail.com>
138 lines
4.6 KiB
C
138 lines
4.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _TC_UTIL_H_
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#define _TC_UTIL_H_ 1
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#define MAX_MSG 16384
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#include <limits.h>
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#include <linux/if.h>
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#include <linux/pkt_sched.h>
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#include <linux/pkt_cls.h>
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#include <linux/gen_stats.h>
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#include "tc_core.h"
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#include "json_print.h"
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/* This is the deprecated multiqueue interface */
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#ifndef TCA_PRIO_MAX
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enum
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{
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TCA_PRIO_UNSPEC,
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TCA_PRIO_MQ,
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__TCA_PRIO_MAX
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};
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#define TCA_PRIO_MAX (__TCA_PRIO_MAX - 1)
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#endif
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#define FILTER_NAMESZ 16
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struct qdisc_util {
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struct qdisc_util *next;
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const char *id;
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int (*parse_qopt)(struct qdisc_util *qu, int argc,
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char **argv, struct nlmsghdr *n, const char *dev);
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int (*print_qopt)(struct qdisc_util *qu,
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FILE *f, struct rtattr *opt);
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int (*print_xstats)(struct qdisc_util *qu,
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FILE *f, struct rtattr *xstats);
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int (*parse_copt)(struct qdisc_util *qu, int argc,
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char **argv, struct nlmsghdr *n, const char *dev);
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int (*print_copt)(struct qdisc_util *qu, FILE *f, struct rtattr *opt);
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};
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extern __u16 f_proto;
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struct filter_util {
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struct filter_util *next;
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char id[FILTER_NAMESZ];
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int (*parse_fopt)(struct filter_util *qu, char *fhandle,
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int argc, char **argv, struct nlmsghdr *n);
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int (*print_fopt)(struct filter_util *qu,
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FILE *f, struct rtattr *opt, __u32 fhandle);
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};
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struct action_util {
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struct action_util *next;
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char id[FILTER_NAMESZ];
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int (*parse_aopt)(struct action_util *a, int *argc,
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char ***argv, int code, struct nlmsghdr *n);
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int (*print_aopt)(struct action_util *au, FILE *f, struct rtattr *opt);
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int (*print_xstats)(struct action_util *au,
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FILE *f, struct rtattr *xstats);
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};
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struct exec_util {
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struct exec_util *next;
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char id[FILTER_NAMESZ];
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int (*parse_eopt)(struct exec_util *eu, int argc, char **argv);
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};
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const char *get_tc_lib(void);
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struct qdisc_util *get_qdisc_kind(const char *str);
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struct filter_util *get_filter_kind(const char *str);
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int parse_percent_rate(char *rate, const char *str, const char *dev);
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int get_qdisc_handle(__u32 *h, const char *str);
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int get_rate(unsigned int *rate, const char *str);
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int get_percent_rate(unsigned int *rate, const char *str, const char *dev);
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int get_rate64(__u64 *rate, const char *str);
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int get_percent_rate64(__u64 *rate, const char *str, const char *dev);
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int get_size(unsigned int *size, const char *str);
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int get_size_and_cell(unsigned int *size, int *cell_log, char *str);
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int get_linklayer(unsigned int *val, const char *arg);
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void print_rate(char *buf, int len, __u64 rate);
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void print_size(char *buf, int len, __u32 size);
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void print_qdisc_handle(char *buf, int len, __u32 h);
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void print_linklayer(char *buf, int len, unsigned int linklayer);
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void print_devname(enum output_type type, int ifindex);
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char *sprint_rate(__u64 rate, char *buf);
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char *sprint_size(__u32 size, char *buf);
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char *sprint_qdisc_handle(__u32 h, char *buf);
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char *sprint_tc_classid(__u32 h, char *buf);
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char *sprint_ticks(__u32 ticks, char *buf);
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char *sprint_linklayer(unsigned int linklayer, char *buf);
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void print_tcstats_attr(FILE *fp, struct rtattr *tb[],
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char *prefix, struct rtattr **xstats);
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void print_tcstats2_attr(FILE *fp, struct rtattr *rta,
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char *prefix, struct rtattr **xstats);
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int get_tc_classid(__u32 *h, const char *str);
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int print_tc_classid(char *buf, int len, __u32 h);
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char *sprint_tc_classid(__u32 h, char *buf);
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int tc_print_police(FILE *f, struct rtattr *tb);
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int parse_police(int *argc_p, char ***argv_p, int tca_id, struct nlmsghdr *n);
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int parse_action_control(int *argc_p, char ***argv_p,
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int *result_p, bool allow_num);
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void parse_action_control_dflt(int *argc_p, char ***argv_p,
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int *result_p, bool allow_num,
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int default_result);
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int parse_action_control_slash(int *argc_p, char ***argv_p,
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int *result1_p, int *result2_p, bool allow_num);
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void print_action_control(FILE *f, const char *prefix,
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int action, const char *suffix);
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int act_parse_police(struct action_util *a, int *argc_p,
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char ***argv_p, int tca_id, struct nlmsghdr *n);
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int print_police(struct action_util *a, FILE *f, struct rtattr *tb);
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int police_print_xstats(struct action_util *a, FILE *f, struct rtattr *tb);
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int tc_print_action(FILE *f, const struct rtattr *tb, unsigned short tot_acts);
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int tc_print_ipt(FILE *f, const struct rtattr *tb);
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int parse_action(int *argc_p, char ***argv_p, int tca_id, struct nlmsghdr *n);
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void print_tm(FILE *f, const struct tcf_t *tm);
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int prio_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt);
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int cls_names_init(char *path);
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void cls_names_uninit(void);
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int action_a2n(char *arg, int *result, bool allow_num);
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bool tc_qdisc_block_exists(__u32 block_index);
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#endif
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