diff options
author | Denis Vlasenko <vda.linux@googlemail.com> | 2007-06-18 03:40:26 +0400 |
---|---|---|
committer | Denis Vlasenko <vda.linux@googlemail.com> | 2007-06-18 03:40:26 +0400 |
commit | bd7bb299c0e9ee5ff52c9d12b46fb14a907b34da (patch) | |
tree | 117a635e9457e1a932bc64941db5869e33179fc9 /networking/arping.c | |
parent | 459be35234cc24b69309eb0ee22600024c73713e (diff) |
wget: use monotonic_sec instead of gettimeofday
zcip: use monotonic_us instead of gettimeofday
udhcpcd: simpler, shorter random_xid()
function old new delta
monotonic_sec - 41 +41
find_pair 164 180 +16
run_list_real 2018 2028 +10
cmp_main 547 555 +8
collect_ctx 112 119 +7
singlemount 4544 4549 +5
time_main 1124 1128 +4
static.start_sec - 4 +4
static.lastupdate_sec - 4 +4
sock - 4 +4
read_package_field 253 257 +4
pick 38 40 +2
get_next_line 145 147 +2
count_lines 59 61 +2
process_stdin 435 433 -2
xstrtoul_range_sfx 229 226 -3
static.initialized 4 1 -3
dhcprelay_main 1125 1122 -3
catcher 380 377 -3
arping_main 1969 1966 -3
s 8 4 -4
cfg 4 - -4
static.lastupdate 8 - -8
start 8 - -8
random_xid 95 33 -62
.rodata 129114 129050 -64
zcip_main 1731 1576 -155
progressmeter 1035 867 -168
------------------------------------------------------------------------------
(add/remove: 4/3 grow/shrink: 10/11 up/down: 113/-490) Total: -377 bytes
Diffstat (limited to 'networking/arping.c')
-rw-r--r-- | networking/arping.c | 83 |
1 files changed, 41 insertions, 42 deletions
diff --git a/networking/arping.c b/networking/arping.c index a022e70ea..7a9fbc2f4 100644 --- a/networking/arping.c +++ b/networking/arping.c @@ -33,18 +33,17 @@ enum { BCAST_ONLY = 32, UNICASTING = 64 }; -static int cfg; -static int s; +static int sock; static unsigned count = UINT_MAX; static unsigned timeout_us; -static int sent; -static int brd_sent; -static int received; -static int brd_recv; -static int req_recv; +static unsigned sent; +static unsigned brd_sent; +static unsigned received; +static unsigned brd_recv; +static unsigned req_recv; -static int send_pack(int sock, struct in_addr *src_addr, +static int send_pack(struct in_addr *src_addr, struct in_addr *dst_addr, struct sockaddr_ll *ME, struct sockaddr_ll *HE) { @@ -59,7 +58,7 @@ static int send_pack(int sock, struct in_addr *src_addr, ah->ar_pro = htons(ETH_P_IP); ah->ar_hln = ME->sll_halen; ah->ar_pln = 4; - ah->ar_op = cfg & ADVERT ? htons(ARPOP_REPLY) : htons(ARPOP_REQUEST); + ah->ar_op = option_mask32 & ADVERT ? htons(ARPOP_REPLY) : htons(ARPOP_REQUEST); memcpy(p, &ME->sll_addr, ah->ar_hln); p += ME->sll_halen; @@ -67,7 +66,7 @@ static int send_pack(int sock, struct in_addr *src_addr, memcpy(p, src_addr, 4); p += 4; - if (cfg & ADVERT) + if (option_mask32 & ADVERT) memcpy(p, &ME->sll_addr, ah->ar_hln); else memcpy(p, &HE->sll_addr, ah->ar_hln); @@ -81,7 +80,7 @@ static int send_pack(int sock, struct in_addr *src_addr, if (err == p - buf) { last = now; sent++; - if (!(cfg & UNICASTING)) + if (!(option_mask32 & UNICASTING)) brd_sent++; } return err; @@ -90,17 +89,17 @@ static int send_pack(int sock, struct in_addr *src_addr, static void finish(void) ATTRIBUTE_NORETURN; static void finish(void) { - if (!(cfg & QUIET)) { - printf("Sent %d probe(s) (%d broadcast(s))\n" - "Received %d repl%s" - " (%d request(s), %d broadcast(s))\n", + if (!(option_mask32 & QUIET)) { + printf("Sent %u probe(s) (%u broadcast(s))\n" + "Received %u repl%s" + " (%u request(s), %u broadcast(s))\n", sent, brd_sent, received, (received == 1) ? "ies" : "y", req_recv, brd_recv); } - if (cfg & DAD) + if (option_mask32 & DAD) exit(!!received); - if (cfg & UNSOLICITED) + if (option_mask32 & UNSOLICITED) exit(0); exit(!received); } @@ -121,8 +120,8 @@ static void catcher(void) count--; if (last == 0 || (now - last) > 500000) { - send_pack(s, &src, &dst, &me, &he); - if (count == 0 && (cfg & UNSOLICITED)) + send_pack(&src, &dst, &me, &he); + if (count == 0 && (option_mask32 & UNSOLICITED)) finish(); } alarm(1); @@ -160,7 +159,7 @@ static int recv_pack(unsigned char *buf, int len, struct sockaddr_ll *FROM) return 0; memcpy(&src_ip, p + ah->ar_hln, 4); memcpy(&dst_ip, p + ah->ar_hln + 4 + ah->ar_hln, 4); - if (!(cfg & DAD)) { + if (!(option_mask32 & DAD)) { if (src_ip.s_addr != dst.s_addr) return 0; if (src.s_addr != dst_ip.s_addr) @@ -188,7 +187,7 @@ static int recv_pack(unsigned char *buf, int len, struct sockaddr_ll *FROM) if (src.s_addr && src.s_addr != dst_ip.s_addr) return 0; } - if (!(cfg & QUIET)) { + if (!(option_mask32 & QUIET)) { int s_printed = 0; printf("%scast re%s from %s [%s]", @@ -219,11 +218,11 @@ static int recv_pack(unsigned char *buf, int len, struct sockaddr_ll *FROM) brd_recv++; if (ah->ar_op == htons(ARPOP_REQUEST)) req_recv++; - if (cfg & QUIT_ON_REPLY) + if (option_mask32 & QUIT_ON_REPLY) finish(); - if (!(cfg & BCAST_ONLY)) { + if (!(option_mask32 & BCAST_ONLY)) { memcpy(he.sll_addr, p, me.sll_halen); - cfg |= UNICASTING; + option_mask32 |= UNICASTING; } return 1; } @@ -237,32 +236,32 @@ int arping_main(int argc, char **argv) char *target; unsigned char *packet; - s = xsocket(PF_PACKET, SOCK_DGRAM, 0); + sock = xsocket(PF_PACKET, SOCK_DGRAM, 0); // Drop suid root privileges xsetuid(getuid()); { unsigned opt; - char *_count, *_timeout; + char *str_count, *str_timeout; /* Dad also sets quit_on_reply. * Advert also sets unsolicited. */ opt_complementary = "=1:Df:AU"; opt = getopt32(argc, argv, "DUAqfbc:w:I:s:", - &_count, &_timeout, &device, &source); - cfg |= opt & 0x3f; /* set respective flags */ + &str_count, &str_timeout, &device, &source); if (opt & 0x40) /* -c: count */ - count = xatou(_count); + count = xatou(str_count); if (opt & 0x80) /* -w: timeout */ - timeout_us = xatou_range(_timeout, 0, INT_MAX/2000000) * 1000000; + timeout_us = xatou_range(str_timeout, 0, INT_MAX/2000000) * 1000000; //if (opt & 0x100) /* -I: interface */ if (strlen(device) >= IF_NAMESIZE) { bb_error_msg_and_die("interface name '%s' is too long", device); } //if (opt & 0x200) /* -s: source */ + option_mask32 &= 0x3f; /* set respective flags */ } target = argv[optind]; @@ -274,12 +273,12 @@ int arping_main(int argc, char **argv) memset(&ifr, 0, sizeof(ifr)); strncpy(ifr.ifr_name, device, IFNAMSIZ - 1); - if (ioctl(s, SIOCGIFINDEX, &ifr) < 0) { + if (ioctl(sock, SIOCGIFINDEX, &ifr) < 0) { bb_error_msg_and_die("interface %s not found", device); } ifindex = ifr.ifr_ifindex; - if (ioctl(s, SIOCGIFFLAGS, (char *) &ifr)) { + if (ioctl(sock, SIOCGIFFLAGS, (char *) &ifr)) { bb_error_msg_and_die("SIOCGIFFLAGS"); } if (!(ifr.ifr_flags & IFF_UP)) { @@ -287,7 +286,7 @@ int arping_main(int argc, char **argv) } if (ifr.ifr_flags & (IFF_NOARP | IFF_LOOPBACK)) { bb_error_msg("interface %s is not ARPable", device); - return (cfg & DAD ? 0 : 2); + return (option_mask32 & DAD ? 0 : 2); } } @@ -303,10 +302,10 @@ int arping_main(int argc, char **argv) bb_error_msg_and_die("invalid source address %s", source); } - if (!(cfg & DAD) && (cfg & UNSOLICITED) && src.s_addr == 0) + if (!(option_mask32 & DAD) && (option_mask32 & UNSOLICITED) && src.s_addr == 0) src = dst; - if (!(cfg & DAD) || src.s_addr) { + if (!(option_mask32 & DAD) || src.s_addr) { struct sockaddr_in saddr; int probe_fd = xsocket(AF_INET, SOCK_DGRAM, 0); @@ -319,7 +318,7 @@ int arping_main(int argc, char **argv) if (src.s_addr) { saddr.sin_addr = src; xbind(probe_fd, (struct sockaddr *) &saddr, sizeof(saddr)); - } else if (!(cfg & DAD)) { + } else if (!(option_mask32 & DAD)) { socklen_t alen = sizeof(saddr); saddr.sin_port = htons(1025); @@ -339,29 +338,29 @@ int arping_main(int argc, char **argv) me.sll_family = AF_PACKET; me.sll_ifindex = ifindex; me.sll_protocol = htons(ETH_P_ARP); - xbind(s, (struct sockaddr *) &me, sizeof(me)); + xbind(sock, (struct sockaddr *) &me, sizeof(me)); { socklen_t alen = sizeof(me); - if (getsockname(s, (struct sockaddr *) &me, &alen) == -1) { + if (getsockname(sock, (struct sockaddr *) &me, &alen) == -1) { bb_error_msg_and_die("getsockname"); } } if (me.sll_halen == 0) { bb_error_msg("interface \"%s\" is not ARPable (no ll address)", device); - return (cfg & DAD ? 0 : 2); + return (option_mask32 & DAD ? 0 : 2); } he = me; memset(he.sll_addr, -1, he.sll_halen); - if (!(cfg & QUIET)) { + if (!(option_mask32 & QUIET)) { printf("ARPING to %s from %s via %s\n", inet_ntoa(dst), inet_ntoa(src), device ? device : "unknown"); } - if (!src.s_addr && !(cfg & DAD)) { + if (!src.s_addr && !(option_mask32 & DAD)) { bb_error_msg_and_die("no src address in the non-DAD mode"); } @@ -387,7 +386,7 @@ int arping_main(int argc, char **argv) socklen_t alen = sizeof(from); int cc; - cc = recvfrom(s, packet, 4096, 0, (struct sockaddr *) &from, &alen); + cc = recvfrom(sock, packet, 4096, 0, (struct sockaddr *) &from, &alen); if (cc < 0) { bb_perror_msg("recvfrom"); continue; |