diff options
| author | Denys Vlasenko | 2016-05-26 21:35:46 +0200 |
|---|---|---|
| committer | Denys Vlasenko | 2016-05-26 21:35:46 +0200 |
| commit | 852e8dd734662d80aa82be802b066130af85b261 (patch) | |
| tree | d53d17f5fa8affbe1c93f6e03cce4b4822ae93a6 /networking/arping.c | |
| parent | f2559e5c2b7bd2c5fa0dd8e88d0a931da92a23af (diff) | |
| download | busybox-852e8dd734662d80aa82be802b066130af85b261.zip busybox-852e8dd734662d80aa82be802b066130af85b261.tar.gz | |
arping: avoid use of ether_ntoa(). Closes 8926
This is the only non-debug use of ether_ntoa(). By not using it,
we reduce bss:
function old new delta
arping_main 1568 1665 +97
static.asc 18 - -18
ether_ntoa 57 - -57
------------------------------------------------------------------------------
(add/remove: 0/2 grow/shrink: 1/0 up/down: 97/-75) Total: 22 bytes
text data bss dec hex filename
911020 493 7352 918865 e0551 busybox_old
911069 493 7336 918898 e0572 busybox_unstripped
Also, "standard" arping zero-pads MAC. ether_ntoa() does not.
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'networking/arping.c')
| -rw-r--r-- | networking/arping.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/networking/arping.c b/networking/arping.c index 6b0de4d..4f207ea 100644 --- a/networking/arping.c +++ b/networking/arping.c @@ -231,20 +231,23 @@ static void recv_pack(unsigned char *buf, int len, struct sockaddr_ll *FROM) if (!(option_mask32 & QUIET)) { int s_printed = 0; - printf("%scast re%s from %s [%s]", + printf("%scast re%s from %s [%02x:%02x:%02x:%02x:%02x:%02x]", FROM->sll_pkttype == PACKET_HOST ? "Uni" : "Broad", ah->ar_op == htons(ARPOP_REPLY) ? "ply" : "quest", inet_ntoa(src_ip), - ether_ntoa((struct ether_addr *) p)); + p[0], p[1], p[2], p[3], p[4], p[5] + ); if (dst_ip.s_addr != src.s_addr) { printf("for %s ", inet_ntoa(dst_ip)); s_printed = 1; } if (memcmp(p + ah->ar_hln + 4, me.sll_addr, ah->ar_hln)) { + unsigned char *pp = p + ah->ar_hln + 4; if (!s_printed) printf("for "); - printf("[%s]", - ether_ntoa((struct ether_addr *) p + ah->ar_hln + 4)); + printf("[%02x:%02x:%02x:%02x:%02x:%02x]", + pp[0], pp[1], pp[2], pp[3], pp[4], pp[5] + ); } if (last) { |