ip: stop propagating argc; optimize ip_parse_common_args

function                                             old     new   delta
find_pair                                            167     187     +20
static.families                                        -      17     +17
die_must_be_on_off                                     -      11     +11
...
on_off                                                33      22     -11
do_ipaddr                                            103      90     -13
do_iptunnel                                         1001     986     -15
iproute_list_or_flush                               1237    1217     -20
static.ip_common_commands                             43      22     -21
do_iproute                                          2217    2193     -24
parse_args                                          1444    1414     -30
ip_do                                                 47      16     -31
do_iprule                                            994     963     -31
ip_main                                              153     113     -40
ipaddr_modify                                       1357    1305     -52
ipaddr_list_or_flush                                2543    2490     -53
ip_parse_common_args                                 294     159    -135
------------------------------------------------------------------------------
(add/remove: 4/1 grow/shrink: 4/24 up/down: 85/-563)         Total: -478 bytes
   text    data     bss     dec     hex filename
 775561     966    9236  785763   bfd63 busybox_old
 775073     962    9236  785271   bfb77 busybox_unstripped

1 files changed, 12 insertions, 12 deletions

diff --git a/networking/libiproute/ip_common.h b/networking/libiproute/ip_common.h
index 97101079f..c04735608 100644
--- a/networking/libiproute/ip_common.h
+++ b/networking/libiproute/ip_common.h
@@ -13,20 +13,20 @@
 #include <linux/if_link.h>
 #endif
 
-extern void ip_parse_common_args(int *argcp, char ***argvp);
+extern char **ip_parse_common_args(char **argv);
 extern int print_neigh(struct sockaddr_nl *who, struct nlmsghdr *n, void *arg);
-extern int ipaddr_list_or_flush(int argc, char **argv, int flush);
-extern int iproute_monitor(int argc, char **argv);
+extern int ipaddr_list_or_flush(char **argv, int flush);
+extern int iproute_monitor(char **argv);
 extern void iplink_usage(void) ATTRIBUTE_NORETURN;
 extern void ipneigh_reset_filter(void);
 
-extern int do_ipaddr(int argc, char **argv);
-extern int do_iproute(int argc, char **argv);
-extern int do_iprule(int argc, char **argv);
-extern int do_ipneigh(int argc, char **argv);
-extern int do_iptunnel(int argc, char **argv);
-extern int do_iplink(int argc, char **argv);
-extern int do_ipmonitor(int argc, char **argv);
-extern int do_multiaddr(int argc, char **argv);
-extern int do_multiroute(int argc, char **argv);
+extern int do_ipaddr(char **argv);
+extern int do_iproute(char **argv);
+extern int do_iprule(char **argv);
+extern int do_ipneigh(char **argv);
+extern int do_iptunnel(char **argv);
+extern int do_iplink(char **argv);
+extern int do_ipmonitor(char **argv);
+extern int do_multiaddr(char **argv);
+extern int do_multiroute(char **argv);
 #endif /* ip_common.h */