zcip: tweak comments and make unsigned division more obvious
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/networking/zcip.c b/networking/zcip.c
index a167c7e..dba269b 100644
--- a/networking/zcip.c
+++ b/networking/zcip.c
@@ -56,9 +56,6 @@
} PACKED;
enum {
- /* 169.254.0.0 */
- LINKLOCAL_ADDR = 0xa9fe0000,
-
/* 0-1 seconds before sending 1st probe */
PROBE_WAIT = 1,
/* 1-2 seconds between probes */
@@ -70,7 +67,7 @@
/* if probe/announce sees a conflict, multiply RANDOM(NUM_CONFLICT) by... */
CONFLICT_MULTIPLIER = 2,
/* if we monitor and see a conflict, how long is defend state? */
- DEFEND_INTERVAL = 10
+ DEFEND_INTERVAL = 10,
};
/* States during the configuration process. */
@@ -196,7 +193,7 @@
*/
static ALWAYS_INLINE unsigned random_delay_ms(unsigned secs)
{
- return rand() % (secs * 1000);
+ return (unsigned)rand() % (secs * 1000);
}
/**
@@ -328,9 +325,9 @@
// - start with some address we want to try
// - short random delay
// - arp probes to see if another host uses it
- // 00:04:e2:64:23:c2 > ff:ff:ff:ff:ff:ff: arp who-has 169.254.194.171 tell 0.0.0.0
+ // 00:04:e2:64:23:c2 > ff:ff:ff:ff:ff:ff arp who-has 169.254.194.171 tell 0.0.0.0
// - arp announcements that we're claiming it
- // 00:04:e2:64:23:c2 > ff:ff:ff:ff:ff:ff: arp who-has 169.254.194.171 (00:04:e2:64:23:c2) tell 169.254.194.171
+ // 00:04:e2:64:23:c2 > ff:ff:ff:ff:ff:ff arp who-has 169.254.194.171 (00:04:e2:64:23:c2) tell 169.254.194.171
// - use it
// - defend it, within limits
// exit if:
@@ -412,7 +409,7 @@
// NOTE: all other exit paths should deconfig...
if (QUIT)
return EXIT_SUCCESS;
- // fall through: switch_to_MONITOR
+ // fall through: switch to MONITOR
default:
// case DEFEND:
// case MONITOR: (shouldn't happen, MONITOR timeout is infinite)
@@ -520,7 +517,7 @@
}
// Note: if we only have a target IP conflict here (ip_conflict & 2),
// IOW: if we just saw this sort of ARP packet:
- // aa:bb:cc:dd:ee:ff > xx:xx:xx:xx:xx:xx: arp who-has <chosen_nip> tell 0.0.0.0
+ // aa:bb:cc:dd:ee:ff > xx:xx:xx:xx:xx:xx arp who-has <chosen_nip> tell 0.0.0.0
// we expect _kernel_ to respond to that, because <chosen_nip>
// is (expected to be) configured on this iface.
} // while (1)