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utils: improve ioctl retry

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This commit is contained in:
Kamil Trzcinski 2023-02-23 12:28:29 +01:00
parent c139a13ec2
commit 8992ae8f5b
1 changed files with 8 additions and 11 deletions
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19
util/opts/log.c
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@ -86,21 +86,18 @@ uint64_t get_monotonic_time_us(struct timespec *ts, struct timeval *tv)
int ioctl_retried(const char *name, int fd, int request, void *arg) int ioctl_retried(const char *name, int fd, int request, void *arg)
{ {
#define MAX_RETRIES 4 #define MAX_RETRIES 10
#define RETRY_INTERVAL_US 1000
int retries = 4; for (int try = 0; try <= MAX_RETRIES; try++) {
int ret = -1; int ret = ioctl(fd, request, arg);
while (retries-- > 0) {
ret = ioctl(fd, request, arg);
if (errno != EINTR && errno != EAGAIN && errno != ETIMEDOUT) if (errno != EINTR && errno != EAGAIN && errno != ETIMEDOUT)
break; return ret;
usleep(RETRY_INTERVAL_US);
} }
if (ret && retries <= 0) { LOG_INFO(NULL, "%s: ioctl(%08x, errno=%d) retried %u times", name, request, errno, MAX_RETRIES);
LOG_PERROR(NULL, "%s: ioctl(%08x, errno=%d) retried %u times; giving up", name, request, errno, MAX_RETRIES); return -1;
}
return ret;
} }
char *trim(char *s) char *trim(char *s)