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dhcp: heed TODO item - divorced options from their string descriptions

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code shrink while at it.

function                                             old     new   delta
dhcp_option_strings                                    -     258    +258
udhcp_run_script                                    1135    1174     +39
dhcp_option_lengths                                    -      11     +11
udhcp_add_simple_option                               93      92      -1
packet_num                                             4       -      -4
read_opt                                             746     739      -7
udhcp_option_lengths                                  11       -     -11
udhcpc_main                                         2590    2494     -96
dhcp_options                                         490      70    -420
------------------------------------------------------------------------------
(add/remove: 2/2 grow/shrink: 1/4 up/down: 308/-539)         Total: -231 bytes
   text    data     bss     dec     hex filename
 775309     929    9100  785338   bfbba busybox_old
 775098     929    9084  785111   bfad7 busybox_unstripped
This commit is contained in:
Denis Vlasenko
2007-11-29 08:17:45 +00:00
parent 64309f8669
commit b539c8452f
8 changed files with 135 additions and 88 deletions
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24
networking/udhcp/dhcpc.c
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@ -19,15 +19,9 @@
#include "options.h"
/* Something is definitely wrong here. IPv4 addresses
* in variables of type long?? BTW, we use inet_ntoa()
* 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 int timeout; /* = 0. Must be signed */
static uint32_t requested_ip; /* = 0 */
static uint32_t server_addr;
static int packet_num; /* = 0 */
static int sockfd = -1;
#define LISTEN_NONE 0
@ -74,12 +68,6 @@ static void perform_renew(void)
case INIT_SELECTING:
break;
}
/* start things over */
packet_num = 0;
/* Kill any timeouts because the user wants this to hurry along */
timeout = 0;
}
@ -153,8 +141,11 @@ int udhcpc_main(int argc, char **argv)
int discover_retries = 3;
uint32_t xid = 0;
uint32_t lease_seconds = 0; /* can be given as 32-bit quantity */
unsigned t1 = 0, t2 = 0; /* what a wonderful names */
unsigned timestamp_got_lease = 0; /* for gcc */
int packet_num;
/* t1, t2... what a wonderful names... */
unsigned t1 = t1; /* for gcc */
unsigned t2 = t2;
unsigned timestamp_got_lease = timestamp_got_lease;
unsigned opt;
int max_fd;
int retval;
@ -315,6 +306,7 @@ int udhcpc_main(int argc, char **argv)
state = INIT_SELECTING;
udhcp_run_script(NULL, "deconfig");
change_listen_mode(LISTEN_RAW);
packet_num = 0;
/* Main event loop. select() waits on signal pipe and possibly
* on sockfd.
@ -585,6 +577,10 @@ int udhcpc_main(int argc, char **argv)
switch (signo) {
case SIGUSR1:
perform_renew();
/* start things over */
packet_num = 0;
/* Kill any timeouts because the user wants this to hurry along */
timeout = 0;
break;
case SIGUSR2:
perform_release();