util/xdp_sample: Change interval parameter of sample_run() to unsigned

The interval is implied to be unsigned, but the variable is a regular
int; change it to unsigned int to better reflect the semantics.

Signed-off-by: Toke Høiland-Jørgensen <[email protected]>

Author: tohojo

lib/util/xdp_sample.c

@@ -1542,7 +1542,7 @@ static int sample_timer_cb(int timerfd, struct stats_record **rec,
 	return print_stats(rec, prev);
 }
 
-int sample_run(int interval, void (*post_cb)(void *), void *ctx)
+int sample_run(unsigned int interval, void (*post_cb)(void *), void *ctx)
 {
 	struct timespec ts = { interval, 0 };
 	struct itimerspec its = { ts, ts };

lib/util/xdp_sample.h

@@ -42,7 +42,7 @@ enum sample_compat {
 int sample_setup_maps(struct bpf_map **maps, const char *ifname);
 int __sample_init(int mask, int ifindex_from, int ifindex_to);
 void sample_teardown(void);
-int sample_run(int interval, void (*post_cb)(void *), void *ctx);
+int sample_run(unsigned int interval, void (*post_cb)(void *), void *ctx);
 bool sample_is_compat(enum sample_compat compat_value);
 bool sample_probe_cpumap_compat(void);
 bool sample_probe_xdp_load_bytes(void);