From: "Chris Friesen" <cfriesen@nortel.com>
To: Eric Dumazet <dada1@cosmosbay.com>
Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: "ip neigh show" not showing arp cache entries?
Date: Wed, 12 Dec 2007 12:25:34 -0600 [thread overview]
Message-ID: <4760279E.1080203@nortel.com> (raw)
In-Reply-To: <47601059.8020203@cosmosbay.com>
[-- Attachment #1: Type: text/plain, Size: 361 bytes --]
Eric Dumazet wrote:
> Chris Friesen a écrit :
>> Is this expected behaviour?
>
> Probably not... Still a 2.6.14 kernel ?
Yep. Embedded hardware, so I'm unable to test with a more recent kernel.
> Could you send the result of :
>
> strace ip neigh show
I've attached two strace runs, one of "ip neigh show" and one of "ip
neigh show 10.41.18.101".
Chris
[-- Attachment #2: trace.txt --]
[-- Type: text/plain, Size: 7617 bytes --]
root@typhoon-base-unit0:/tftpboot/cnp/0-0-5-0/0-0-5-0> strace ip neigh show
execve("/sbin/ip", ["ip", "neigh", "show"], [/* 14 vars */]) = 0
uname({sys="Linux", node="typhoon-base-unit0", ...}) = 0
brk(0) = 0x806b000
access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or directory)
open("/etc/ld.so.cache", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=58478, ...}) = 0
mmap2(NULL, 58478, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb7f56000
close(3) = 0
open("/lib/libresolv.so.2", O_RDONLY) = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\320\"\0"..., 512) = 512
fstat64(3, {st_mode=S_IFREG|0755, st_size=75541, ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7f55000
mmap2(NULL, 71816, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xb7f43000
mmap2(0xb7f51000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xe) = 0xb7f51000
mmap2(0xb7f53000, 6280, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xb7f53000
close(3) = 0
open("/lib/libc.so.6", O_RDONLY) = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\216O\1"..., 512) = 512
fstat64(3, {st_mode=S_IFREG|0755, st_size=1407983, ...}) = 0
mmap2(NULL, 1146076, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xb7e2b000
mmap2(0xb7f39000, 32768, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x10d) = 0xb7f39000
mmap2(0xb7f41000, 7388, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xb7f41000
close(3) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7e2a000
mprotect(0xb7f39000, 20480, PROT_READ) = 0
set_thread_area({entry_number:-1 -> 6, base_addr:0xb7e2a6b0, limit:1048575, seg_32bit:1, contents:0, read_exec_only:0, limit_in_pages:1, seg_not_present:0, useable:1}) = 0
munmap(0xb7f56000, 58478) = 0
socket(PF_NETLINK, SOCK_RAW, 0) = 3
setsockopt(3, SOL_SOCKET, SO_SNDBUF, [32768], 4) = 0
setsockopt(3, SOL_SOCKET, SO_RCVBUF, [32768], 4) = 0
bind(3, {sa_family=AF_NETLINK, pid=0, groups=00000000}, 12) = 0
getsockname(3, {sa_family=AF_NETLINK, pid=6150, groups=00000000}, [12]) = 0
time(NULL) = 1197465643
sendto(3, "\24\0\0\0\22\0\1\3,\340_G\0\0\0\0\0\0\0\0", 20, 0, {sa_family=AF_NETLINK, pid=0, groups=00000000}, 12) = 20
recvmsg(3, {msg_name(12)={sa_family=AF_NETLINK, pid=0, groups=00000000}, msg_iov(1)=[{"\364\0\0\0\20\0\2\0,\340_G\6\30\0\0\0\0\1\0\1\0\0\0C\30"..., 16384}], msg_controllen=0, msg_flags=0}, 0) = 3544
brk(0) = 0x806b000
brk(0x808c000) = 0x808c000
recvmsg(3, {msg_name(12)={sa_family=AF_NETLINK, pid=0, groups=00000000}, msg_iov(1)=[{"\24\0\0\0\3\0\2\0,\340_G\6\30\0\0\0\0\0\0\1\0\0\0C\30\0"..., 16384}], msg_controllen=0, msg_flags=0}, 0) = 20
sendto(3, "\24\0\0\0\36\0\1\3-\340_G\0\0\0\0\0\0\0\0", 20, 0, {sa_family=AF_NETLINK, pid=0, groups=00000000}, 12) = 20
recvmsg(3, {msg_name(12)={sa_family=AF_NETLINK, pid=0, groups=00000000}, msg_iov(1)=[{"X\0\0\0\34\0\2\0-\340_G\6\30\0\0\n\0\0\0\7\0\0\0@\0\0\5"..., 16384}], msg_controllen=0, msg_flags=0}, 0) = 264
recvmsg(3, {msg_name(12)={sa_family=AF_NETLINK, pid=0, groups=00000000}, msg_iov(1)=[{"\24\0\0\0\3\0\2\0-\340_G\6\30\0\0\0\0\0\0\7\0\0\0@\0\0"..., 16384}], msg_controllen=0, msg_flags=0}, 0) = 20
exit_group(0) = ?
Process 6150 detached
root@typhoon-base-unit0:/tftpboot/cnp/0-0-5-0/0-0-5-0> ip neigh show 10.41.18.101
10.41.18.101 dev eth6 lladdr 00:0e:0c:5e:95:bd REACHABLE
root@typhoon-base-unit0:/tftpboot/cnp/0-0-5-0/0-0-5-0> strace ip neigh show 10.41.18.101
execve("/sbin/ip", ["ip", "neigh", "show", "10.41.18.101"], [/* 14 vars */]) = 0
uname({sys="Linux", node="typhoon-base-unit0", ...}) = 0
brk(0) = 0x806b000
access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or directory)
open("/etc/ld.so.cache", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=58478, ...}) = 0
mmap2(NULL, 58478, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb7fd5000
close(3) = 0
open("/lib/libresolv.so.2", O_RDONLY) = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\320\"\0"..., 512) = 512
fstat64(3, {st_mode=S_IFREG|0755, st_size=75541, ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7fd4000
mmap2(NULL, 71816, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xb7fc2000
mmap2(0xb7fd0000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xe) = 0xb7fd0000
mmap2(0xb7fd2000, 6280, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xb7fd2000
close(3) = 0
open("/lib/libc.so.6", O_RDONLY) = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\216O\1"..., 512) = 512
fstat64(3, {st_mode=S_IFREG|0755, st_size=1407983, ...}) = 0
mmap2(NULL, 1146076, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xb7eaa000
mmap2(0xb7fb8000, 32768, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x10d) = 0xb7fb8000
mmap2(0xb7fc0000, 7388, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xb7fc0000
close(3) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7ea9000
mprotect(0xb7fb8000, 20480, PROT_READ) = 0
set_thread_area({entry_number:-1 -> 6, base_addr:0xb7ea96b0, limit:1048575, seg_32bit:1, contents:0, read_exec_only:0, limit_in_pages:1, seg_not_present:0, useable:1}) = 0
munmap(0xb7fd5000, 58478) = 0
socket(PF_NETLINK, SOCK_RAW, 0) = 3
setsockopt(3, SOL_SOCKET, SO_SNDBUF, [32768], 4) = 0
setsockopt(3, SOL_SOCKET, SO_RCVBUF, [32768], 4) = 0
bind(3, {sa_family=AF_NETLINK, pid=0, groups=00000000}, 12) = 0
getsockname(3, {sa_family=AF_NETLINK, pid=7536, groups=00000000}, [12]) = 0
time(NULL) = 1197465790
sendto(3, "\24\0\0\0\22\0\1\3\277\340_G\0\0\0\0\0\0\0\0", 20, 0, {sa_family=AF_NETLINK, pid=0, groups=00000000}, 12) = 20
recvmsg(3, {msg_name(12)={sa_family=AF_NETLINK, pid=0, groups=00000000}, msg_iov(1)=[{"\364\0\0\0\20\0\2\0\277\340_Gp\35\0\0\0\0\1\0\1\0\0\0C"..., 16384}], msg_controllen=0, msg_flags=0}, 0) = 3544
brk(0) = 0x806b000
brk(0x808c000) = 0x808c000
recvmsg(3, {msg_name(12)={sa_family=AF_NETLINK, pid=0, groups=00000000}, msg_iov(1)=[{"\24\0\0\0\3\0\2\0\277\340_Gp\35\0\0\0\0\0\0\1\0\0\0C\30"..., 16384}], msg_controllen=0, msg_flags=0}, 0) = 20
sendto(3, "\24\0\0\0\36\0\1\3\300\340_G\0\0\0\0\2\0\0\0", 20, 0, {sa_family=AF_NETLINK, pid=0, groups=00000000}, 12) = 20
recvmsg(3, {msg_name(12)={sa_family=AF_NETLINK, pid=0, groups=00000000}, msg_iov(1)=[{"L\0\0\0\34\0\2\0\300\340_Gp\35\0\0\2\0\0\0\r\0\0\0\2\0"..., 16384}], msg_controllen=0, msg_flags=0}, 0) = 912
fstat64(1, {st_mode=S_IFCHR|0620, st_rdev=makedev(136, 11), ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7fe3000
write(1, "10.41.18.101 dev eth6 lladdr 00:"..., 5710.41.18.101 dev eth6 lladdr 00:0e:0c:5e:95:bd REACHABLE) = 57
recvmsg(3, {msg_name(12)={sa_family=AF_NETLINK, pid=0, groups=00000000}, msg_iov(1)=[{"\24\0\0\0\3\0\2\0\300\340_Gp\35\0\0\0\0\0\0\r\0\0\0\2\0"..., 16384}], msg_controllen=0, msg_flags=0}, 0) = 20
munmap(0xb7fe3000, 4096) = 0
exit_group(0) = ?
Process 7536 detached
next prev parent reply other threads:[~2007-12-12 18:26 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-12-10 17:36 "ip neigh show" not showing arp cache entries? Chris Friesen
2007-12-10 17:54 ` Chris Friesen
2007-12-12 16:21 ` Chris Friesen
2007-12-12 16:46 ` Eric Dumazet
2007-12-12 18:25 ` Chris Friesen [this message]
2007-12-12 18:52 ` Eric Dumazet
2007-12-12 21:57 ` Chris Friesen
2007-12-12 22:06 ` YOSHIFUJI Hideaki / 吉藤英明
2007-12-17 15:32 ` Chris Friesen
2007-12-17 18:02 ` Patrick McHardy
2007-12-17 19:47 ` Chris Friesen
2007-12-17 23:51 ` Patrick McHardy
2007-12-18 0:33 ` Thomas Graf
2007-12-18 0:35 ` Patrick McHardy
2007-12-18 3:33 ` Herbert Xu
2007-12-18 14:52 ` Chris Friesen
2007-12-19 1:14 ` Herbert Xu
2007-12-19 14:28 ` Chris Friesen
2007-12-19 14:28 ` Chris Friesen
2007-12-25 1:06 ` Herbert Xu
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=4760279E.1080203@nortel.com \
--to=cfriesen@nortel.com \
--cc=dada1@cosmosbay.com \
--cc=linux-kernel@vger.kernel.org \
--cc=netdev@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.