optimize 16- and 32-bit moves
function old new delta
udhcpd_main 1239 1257 +18
udhcp_add_simple_option 93 92 -1
buffer_read_le_u32 19 18 -1
unpack_gz_stream_with_info 526 520 -6
dnsd_main 1470 1463 -7
udhcp_run_script 1208 1186 -22
send_ACK 255 229 -26
arping_main 1661 1623 -38
send_offer 470 428 -42
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/8 up/down: 18/-143) Total: -125 bytes
diff --git a/networking/libiproute/libnetlink.c b/networking/libiproute/libnetlink.c
index 01454fb..6d51d8d 100644
--- a/networking/libiproute/libnetlink.c
+++ b/networking/libiproute/libnetlink.c
@@ -341,7 +341,7 @@
rta = (struct rtattr*)(((char*)n) + NLMSG_ALIGN(n->nlmsg_len));
rta->rta_type = type;
rta->rta_len = len;
- memcpy(RTA_DATA(rta), &data, 4);
+ move_to_unaligned32(RTA_DATA(rta), data);
n->nlmsg_len = NLMSG_ALIGN(n->nlmsg_len) + len;
return 0;
}
@@ -372,7 +372,7 @@
subrta = (struct rtattr*)(((char*)rta) + RTA_ALIGN(rta->rta_len));
subrta->rta_type = type;
subrta->rta_len = len;
- memcpy(RTA_DATA(subrta), &data, 4);
+ move_to_unaligned32(RTA_DATA(subrta), data);
rta->rta_len = NLMSG_ALIGN(rta->rta_len) + len;
return 0;
}
diff --git a/networking/libiproute/ll_addr.c b/networking/libiproute/ll_addr.c
index e732efd..f50e371 100644
--- a/networking/libiproute/ll_addr.c
+++ b/networking/libiproute/ll_addr.c
@@ -43,6 +43,8 @@
int ll_addr_a2n(unsigned char *lladdr, int len, char *arg)
{
+ int i;
+
if (strchr(arg, '.')) {
inet_prefix pfx;
if (get_addr_1(&pfx, arg, AF_INET)) {
@@ -54,26 +56,24 @@
}
memcpy(lladdr, pfx.data, 4);
return 4;
- } else {
- int i;
-
- for (i=0; i<len; i++) {
- int temp;
- char *cp = strchr(arg, ':');
- if (cp) {
- *cp = 0;
- cp++;
- }
- if (sscanf(arg, "%x", &temp) != 1 || (temp < 0 || temp > 255)) {
- bb_error_msg("\"%s\" is invalid lladdr", arg);
- return -1;
- }
- lladdr[i] = temp;
- if (!cp) {
- break;
- }
- arg = cp;
- }
- return i+1;
}
+
+ for (i = 0; i < len; i++) {
+ int temp;
+ char *cp = strchr(arg, ':');
+ if (cp) {
+ *cp = 0;
+ cp++;
+ }
+ if (sscanf(arg, "%x", &temp) != 1 || (temp < 0 || temp > 255)) {
+ bb_error_msg("\"%s\" is invalid lladdr", arg);
+ return -1;
+ }
+ lladdr[i] = temp;
+ if (!cp) {
+ break;
+ }
+ arg = cp;
+ }
+ return i+1;
}