tc/tc_util.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _TC_UTIL_H_
   3 #define _TC_UTIL_H_ 1
   4
   5 #define MAX_MSG 16384
   6 #include <limits.h>
   7 #include <linux/if.h>
   8 #include <stdbool.h>
   9
  10 #include <linux/pkt_sched.h>
  11 #include <linux/pkt_cls.h>
  12 #include <linux/gen_stats.h>
  13
  14 #include "tc_core.h"
  15 #include "json_print.h"
  16
  17 /* This is the deprecated multiqueue interface */
  18 #ifndef TCA_PRIO_MAX
  19 enum
  20 {
  21         TCA_PRIO_UNSPEC,
  22         TCA_PRIO_MQ,
  23         __TCA_PRIO_MAX
  24 };
  25
  26 #define TCA_PRIO_MAX    (__TCA_PRIO_MAX - 1)
  27 #endif
  28
  29 #define FILTER_NAMESZ   16
  30
  31 struct qdisc_util {
  32         struct  qdisc_util *next;
  33         const char *id;
  34         int (*parse_qopt)(struct qdisc_util *qu, int argc,
  35                           char **argv, struct nlmsghdr *n, const char *dev);
  36         int (*print_qopt)(struct qdisc_util *qu,
  37                           FILE *f, struct rtattr *opt);
  38         int (*print_xstats)(struct qdisc_util *qu,
  39                             FILE *f, struct rtattr *xstats);
  40
  41         int (*parse_copt)(struct qdisc_util *qu, int argc,
  42                           char **argv, struct nlmsghdr *n, const char *dev);
  43         int (*print_copt)(struct qdisc_util *qu, FILE *f, struct rtattr *opt);
  44         int (*has_block)(struct qdisc_util *qu, struct rtattr *opt, __u32 block_idx, bool *p_has);
  45 };
  46
  47 extern __u16 f_proto;
  48 struct filter_util {
  49         struct filter_util *next;
  50         char id[FILTER_NAMESZ];
  51         int (*parse_fopt)(struct filter_util *qu, char *fhandle,
  52                           int argc, char **argv, struct nlmsghdr *n);
  53         int (*print_fopt)(struct filter_util *qu,
  54                           FILE *f, struct rtattr *opt, __u32 fhandle);
  55 };
  56
  57 struct action_util {
  58         struct action_util *next;
  59         char id[FILTER_NAMESZ];
  60         int (*parse_aopt)(struct action_util *a, int *argc,
  61                           char ***argv, int code, struct nlmsghdr *n);
  62         int (*print_aopt)(struct action_util *au, FILE *f, struct rtattr *opt);
  63         int (*print_xstats)(struct action_util *au,
  64                             FILE *f, struct rtattr *xstats);
  65 };
  66
  67 struct exec_util {
  68         struct exec_util *next;
  69         char id[FILTER_NAMESZ];
  70         int (*parse_eopt)(struct exec_util *eu, int argc, char **argv);
  71 };
  72
  73 const char *get_tc_lib(void);
  74
  75 struct qdisc_util *get_qdisc_kind(const char *str);
  76 struct filter_util *get_filter_kind(const char *str);
  77
  78 int get_qdisc_handle(__u32 *h, const char *str);
  79 int get_rate(unsigned int *rate, const char *str);
  80 int get_percent_rate(unsigned int *rate, const char *str, const char *dev);
  81 int get_rate64(__u64 *rate, const char *str);
  82 int get_percent_rate64(__u64 *rate, const char *str, const char *dev);
  83 int get_size(unsigned int *size, const char *str);
  84 int get_size_and_cell(unsigned int *size, int *cell_log, char *str);
  85 int get_linklayer(unsigned int *val, const char *arg);
  86
  87 void print_rate(char *buf, int len, __u64 rate);
  88 void print_devname(enum output_type type, int ifindex);
  89
  90 char *sprint_rate(__u64 rate, char *buf);
  91 char *sprint_size(__u32 size, char *buf);
  92 char *sprint_tc_classid(__u32 h, char *buf);
  93 char *sprint_ticks(__u32 ticks, char *buf);
  94 char *sprint_linklayer(unsigned int linklayer, char *buf);
  95
  96 void print_tcstats_attr(FILE *fp, struct rtattr *tb[],
  97                         char *prefix, struct rtattr **xstats);
  98 void print_tcstats2_attr(FILE *fp, struct rtattr *rta,
  99                          char *prefix, struct rtattr **xstats);
 100
 101 int get_tc_classid(__u32 *h, const char *str);
 102 int print_tc_classid(char *buf, int len, __u32 h);
 103 char *sprint_tc_classid(__u32 h, char *buf);
 104
 105 int tc_print_police(FILE *f, struct rtattr *tb);
 106 int parse_percent(double *val, const char *str);
 107 int parse_police(int *argc_p, char ***argv_p, int tca_id, struct nlmsghdr *n);
 108
 109 int parse_action_control(int *argc_p, char ***argv_p,
 110                          int *result_p, bool allow_num);
 111 void parse_action_control_dflt(int *argc_p, char ***argv_p,
 112                                int *result_p, bool allow_num,
 113                                int default_result);
 114 int parse_action_control_slash(int *argc_p, char ***argv_p,
 115                                int *result1_p, int *result2_p, bool allow_num);
 116 void print_action_control(FILE *f, const char *prefix,
 117                           int action, const char *suffix);
 118 int police_print_xstats(struct action_util *a, FILE *f, struct rtattr *tb);
 119 int tc_print_action(FILE *f, const struct rtattr *tb, unsigned short tot_acts);
 120 int tc_print_ipt(FILE *f, const struct rtattr *tb);
 121 int parse_action(int *argc_p, char ***argv_p, int tca_id, struct nlmsghdr *n);
 122 void print_tm(FILE *f, const struct tcf_t *tm);
 123 int prio_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt);
 124
 125 int cls_names_init(char *path);
 126 void cls_names_uninit(void);
 127
 128 int action_a2n(char *arg, int *result, bool allow_num);
 129
 130 bool tc_qdisc_block_exists(__u32 block_index);
 131
 132 void print_masked_u32(const char *name, struct rtattr *attr,
 133                       struct rtattr *mask_attr, bool newline);
 134 void print_masked_u16(const char *name, struct rtattr *attr,
 135                       struct rtattr *mask_attr, bool newline);
 136 void print_masked_u8(const char *name, struct rtattr *attr,
 137                      struct rtattr *mask_attr, bool newline);
 138 void print_masked_be16(const char *name, struct rtattr *attr,
 139                        struct rtattr *mask_attr, bool newline);
 140 #endif