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Refactor egress pacer option parsing

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LinuxDev9002
2026-07-18 16:29:59 -07:00
parent 5e4438dc6c
commit e3e6cdd9f0
1 changed files with 64 additions and 37 deletions
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101
src/53-egress-pacer/egress_pacer.c
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@@ -63,7 +63,7 @@ static void usage(const char *program)
}
static int parse_u64(const char *value, unsigned long long maximum,
unsigned long long *result)
unsigned long long *result)
{
char *end = NULL;
unsigned long long parsed;
@@ -76,6 +76,65 @@ static int parse_u64(const char *value, unsigned long long maximum,
return 0;
}
static int parse_rate(const char *value)
{
unsigned long long parsed;
if (parse_u64(value, 100000000, &parsed) || parsed < 8) {
fprintf(stderr, "invalid rate in Kbit/s: %s\n", value);
return -EINVAL;
}
env.rate_kbps = parsed;
return 0;
}
static int parse_queue_limit(const char *value)
{
unsigned long long parsed;
if (parse_u64(value, 65535, &parsed) || parsed == 0) {
fprintf(stderr, "invalid queue limit: %s\n", value);
return -EINVAL;
}
env.queue_limit = parsed;
return 0;
}
static int parse_duration(const char *value)
{
unsigned long long parsed;
if (parse_u64(value, 86400, &parsed) || parsed == 0) {
fprintf(stderr, "invalid duration in seconds: %s\n", value);
return -EINVAL;
}
env.duration = parsed;
return 0;
}
static int parse_option(int option, const char *program)
{
switch (option) {
case 'i':
env.interface = optarg;
return 0;
case 'r':
return parse_rate(optarg);
case 'q':
return parse_queue_limit(optarg);
case 'd':
return parse_duration(optarg);
case 'v':
env.verbose = true;
return 0;
case 'h':
usage(program);
exit(0);
default:
return -EINVAL;
}
}
static int parse_args(int argc, char **argv)
{
static const struct option options[] = {
@@ -87,44 +146,12 @@ static int parse_args(int argc, char **argv)
{ "help", no_argument, NULL, 'h' },
{},
};
unsigned long long parsed;
int option;
int error, option;
while ((option = getopt_long(argc, argv, "i:r:q:d:vh", options, NULL)) != -1) {
switch (option) {
case 'i':
env.interface = optarg;
break;
case 'r':
if (parse_u64(optarg, 100000000, &parsed) || parsed < 8) {
fprintf(stderr, "invalid rate in Kbit/s: %s\n", optarg);
return -EINVAL;
}
env.rate_kbps = parsed;
break;
case 'q':
if (parse_u64(optarg, 65535, &parsed) || parsed == 0) {
fprintf(stderr, "invalid queue limit: %s\n", optarg);
return -EINVAL;
}
env.queue_limit = parsed;
break;
case 'd':
if (parse_u64(optarg, 86400, &parsed) || parsed == 0) {
fprintf(stderr, "invalid duration in seconds: %s\n", optarg);
return -EINVAL;
}
env.duration = parsed;
break;
case 'v':
env.verbose = true;
break;
case 'h':
usage(argv[0]);
exit(0);
default:
return -EINVAL;
}
error = parse_option(option, argv[0]);
if (error)
return error;
}
if (!env.interface) {