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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __PARAMS_H
#define __PARAMS_H
#include <getopt.h>
#include <stdbool.h>
#include <stdlib.h>
#include <linux/in.h>
#include <linux/in6.h>
#include <linux/if_ether.h>
#include <bpf/libbpf.h>
enum option_type {
OPT_NONE,
OPT_BOOL,
OPT_FLAGS,
OPT_STRING,
OPT_U16,
OPT_U32,
OPT_U32_MULTI,
OPT_MACADDR,
OPT_IFNAME,
OPT_IFNAME_MULTI,
OPT_IPADDR,
OPT_ENUM,
OPT_MULTISTRING,
__OPT_MAX
};
struct prog_option {
enum option_type type;
size_t cfg_size;
size_t cfg_offset;
size_t opt_size;
char *name;
char short_opt;
char *help;
char *metavar;
void *typearg;
bool required;
bool positional;
unsigned int min_num;
unsigned int max_num;
unsigned int num_set;
};
struct flag_val {
const char *flagstring;
unsigned int flagval;
};
struct enum_val {
const char *name;
unsigned int value;
};
struct multistring {
const char **strings;
size_t num_strings;
};
struct u32_multi {
__u32 *vals;
size_t num_vals;
};
struct iface {
struct iface *next;
char *ifname;
int ifindex;
};
struct ip_addr {
int af;
union {
struct in_addr addr4;
struct in6_addr addr6;
} addr;
};
struct mac_addr {
unsigned char addr[ETH_ALEN];
};
#define sizeof_field(TYPE, MEMBER) sizeof((((TYPE *)0)->MEMBER))
#define DEFINE_OPTION(_name, _type, _cfgtype, _cfgmember, ...) \
{ \
.cfg_size = sizeof(_cfgtype), \
.opt_size = sizeof_field(_cfgtype, _cfgmember), \
.cfg_offset = offsetof(_cfgtype, _cfgmember), .name = _name, \
.type = _type, __VA_ARGS__ \
}
#define END_OPTIONS \
{ \
}
#define FOR_EACH_OPTION(_options, _opt) \
for (_opt = _options; _opt->type != OPT_NONE; _opt++)
struct prog_command {
const char *name;
int (*func)(const void *cfg, const char *pin_root_path);
struct prog_option *options;
const void *default_cfg;
char *doc;
bool no_cfg;
};
#define DEFINE_COMMAND_NAME(_name, _func, _doc) \
{ \
.name = _name, .func = do_##_func, \
.options = _func##_options, .default_cfg = &defaults_##_func, \
.doc = _doc \
}
#define DEFINE_COMMAND(_name, _doc) DEFINE_COMMAND_NAME(textify(_name), _name, _doc)
#define DEFINE_COMMAND_NODEF(_name, _doc) \
{ \
.name = textify(_name), .func = do_##_name, \
.options = _name##_options, .doc = _doc \
}
#define END_COMMANDS \
{ \
}
const char *get_enum_name(const struct enum_val *vals, unsigned int value);
void print_flags(char *buf, size_t buf_len, const struct flag_val *flags,
unsigned long flags_val);
void print_addr(char *buf, size_t buf_len, const struct ip_addr *addr);
void print_macaddr(char *buf, size_t buf_len, const struct mac_addr *addr);
bool macaddr_is_null(const struct mac_addr *addr);
bool ipaddr_is_null(const struct ip_addr *addr);
bool is_prefix(const char *prefix, const char *string);
void usage(const char *prog_name, const char *doc,
const struct prog_option *long_options, bool full);
int parse_cmdline_args(int argc, char **argv, struct prog_option *long_options,
void *cfg, const char *prog, const char *usage_cmd,
const char *doc, const void *defaults);
int dispatch_commands(const char *argv0, int argc, char **argv,
const struct prog_command *cmds, size_t cfg_size,
const char *prog_name, bool needs_bpffs);
#endif /* __COMMON_PARAMS_H */
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