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udhcp: many small fixes:

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* arpping(): smaller and even probably fixed
* lots of variables/params converted: ulong -> uint32_t
* uptime() nuked in favor of monotonic_sec()
* udhcp_get_packet(): only one "bad vendor", simplify

function                                             old     new   delta
reservedIp                                            36      35      -1
udhcpc_main                                         2462    2460      -2
addStaticLease                                        64      62      -2
static.broken_vendors                                 16       -     -16
uptime                                                19       -     -19
udhcpd_main                                         1273    1238     -35
udhcp_get_packet                                     223     184     -39
.rodata                                           144162  144106     -56
arpping                                              690     609     -81
------------------------------------------------------------------------------
(add/remove: 0/2 grow/shrink: 0/7 up/down: 0/-251)           Total: -251 bytes
   text    data     bss     dec     hex filename
 734241    3028   14400  751669   b7835 busybox_old
 734005    3028   14400  751433   b7749 busybox_unstripped
This commit is contained in:
Denis Vlasenko
2007-07-03 15:47:50 +00:00
parent 54e19da86d
commit 42b3dea9bf
11 changed files with 177 additions and 185 deletions
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39
networking/udhcp/dhcpc.c
View File

@@ -22,8 +22,8 @@
* in the code. Manpage says that struct in_addr has a member of type long (!)
* which holds IPv4 address, and the struct is passed by value (!!)
*/
static unsigned long timeout;
static unsigned long requested_ip; /* = 0 */
static unsigned timeout;
static uint32_t requested_ip; /* = 0 */
static uint32_t server_addr;
static int packet_num; /* = 0 */
static int sockfd = -1;
@@ -84,13 +84,13 @@ static void perform_renew(void)
/* perform a release */
static void perform_release(void)
{
char buffer[16];
char buffer[sizeof("255.255.255.255")];
struct in_addr temp_addr;
/* send release packet */
if (state == BOUND || state == RENEWING || state == REBINDING) {
temp_addr.s_addr = server_addr;
sprintf(buffer, "%s", inet_ntoa(temp_addr));
strcpy(buffer, inet_ntoa(temp_addr));
temp_addr.s_addr = requested_ip;
bb_info_msg("Unicasting a release of %s to %s",
inet_ntoa(temp_addr), buffer);
@@ -101,7 +101,7 @@ static void perform_release(void)
change_mode(LISTEN_NONE);
state = RELEASED;
timeout = 0x7fffffff;
timeout = INT_MAX;
}
@@ -115,12 +115,13 @@ static void client_background(void)
* will work on NOMMU too */
#else
bb_daemonize(0);
logmode &= ~LOGMODE_STDIO;
/* rewrite pidfile, as our pid is different now */
if (client_config.pidfile)
write_pidfile(client_config.pidfile);
logmode &= ~LOGMODE_STDIO;
#endif
client_config.foreground = 1; /* Do not fork again. */
/* Do not fork again. */
client_config.foreground = 1;
client_config.background_if_no_lease = 0;
}
@@ -143,9 +144,11 @@ int udhcpc_main(int argc, char **argv)
{
uint8_t *temp, *message;
char *str_c, *str_V, *str_h, *str_F, *str_r, *str_T, *str_t;
unsigned long t1 = 0, t2 = 0, xid = 0;
unsigned long start = 0, lease = 0;
long now;
uint32_t xid = 0;
uint32_t lease = 0; /* can be given as 32-bit quantity */
unsigned t1 = 0, t2 = 0;
unsigned start = 0;
unsigned now;
unsigned opt;
int max_fd;
int sig;
@@ -292,7 +295,7 @@ int udhcpc_main(int argc, char **argv)
change_mode(LISTEN_RAW);
for (;;) {
tv.tv_sec = timeout - uptime();
tv.tv_sec = timeout - monotonic_sec();
tv.tv_usec = 0;
if (listen_mode != LISTEN_NONE && sockfd < 0) {
@@ -308,7 +311,7 @@ int udhcpc_main(int argc, char **argv)
retval = select(max_fd + 1, &rfds, NULL, NULL, &tv);
} else retval = 0; /* If we already timed out, fall through */
now = uptime();
now = monotonic_sec();
if (retval == 0) {
/* timeout dropped to zero */
switch (state) {
@@ -398,7 +401,7 @@ int udhcpc_main(int argc, char **argv)
break;
case RELEASED:
/* yah, I know, *you* say it would never happen */
timeout = 0x7fffffff;
timeout = INT_MAX;
break;
}
} else if (retval > 0 && listen_mode != LISTEN_NONE && FD_ISSET(sockfd, &rfds)) {
@@ -415,8 +418,8 @@ int udhcpc_main(int argc, char **argv)
if (len < 0) continue;
if (packet.xid != xid) {
DEBUG("Ignoring XID %lx (our xid is %lx)",
(unsigned long) packet.xid, xid);
DEBUG("Ignoring XID %x (our xid is %x)",
(unsigned)packet.xid, (unsigned)xid);
continue;
}
@@ -471,10 +474,10 @@ int udhcpc_main(int argc, char **argv)
t1 = lease / 2;
/* little fixed point for n * .875 */
t2 = (lease * 0x7) >> 3;
t2 = (lease * 7) >> 3;
temp_addr.s_addr = packet.yiaddr;
bb_info_msg("Lease of %s obtained, lease time %ld",
inet_ntoa(temp_addr), lease);
bb_info_msg("Lease of %s obtained, lease time %u",
inet_ntoa(temp_addr), (unsigned)lease);
start = now;
timeout = t1 + start;
requested_ip = packet.yiaddr;