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