Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756905AbXLLS03 (ORCPT ); Wed, 12 Dec 2007 13:26:29 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752048AbXLLS0R (ORCPT ); Wed, 12 Dec 2007 13:26:17 -0500 Received: from zcars04f.nortel.com ([47.129.242.57]:40249 "EHLO zcars04f.nortel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751558AbXLLS0Q (ORCPT ); Wed, 12 Dec 2007 13:26:16 -0500 Message-ID: <4760279E.1080203@nortel.com> Date: Wed, 12 Dec 2007 12:25:34 -0600 From: "Chris Friesen" User-Agent: Mozilla Thunderbird 1.0.2-6 (X11/20050513) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Eric Dumazet CC: netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: "ip neigh show" not showing arp cache entries? References: <475D7901.1040900@nortel.com> <475D7D70.5030502@nortel.com> <47600A6E.8000202@nortel.com> <47601059.8020203@cosmosbay.com> In-Reply-To: <47601059.8020203@cosmosbay.com> Content-Type: multipart/mixed; boundary="------------060504040607060505060303" X-OriginalArrivalTime: 12 Dec 2007 18:25:43.0240 (UTC) FILETIME=[67DACC80:01C83CEC] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 8610 Lines: 136 This is a multi-part message in MIME format. --------------060504040607060505060303 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 8bit Eric Dumazet wrote: > Chris Friesen a ?crit : >> 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 --------------060504040607060505060303 Content-Type: text/plain; name="trace.txt" Content-Transfer-Encoding: 7bit Content-Disposition: inline; filename="trace.txt" 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 --------------060504040607060505060303-- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/