[ale] ethtool and mii-tool disagree
Jeff Lightner
jlightner at water.com
Sat Dec 9 19:49:42 EST 2006
strace ethtool eth0
execve("/sbin/ethtool", ["ethtool", "eth0"], [/* 27 vars */]) = 0
uname({sys="Linux", node="atltst01.dsw.net", ...}) = 0
brk(0) = 0x87cb000
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=123603, ...}) = 0
old_mmap(NULL, 123603, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb7f21000
close(3) = 0
open("/lib/tls/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\20\177"...,
512) = 512
fstat64(3, {st_mode=S_IFREG|0755, st_size=1454546, ...}) = 0
old_mmap(0x2d3000, 1219772, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x2d3000
old_mmap(0x3f7000, 16384, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x124000) = 0x3f7000
old_mmap(0x3fb000, 7356, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x3fb000
close(3) = 0
old_mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS,
-1, 0) = 0xb7f20000
mprotect(0x3f7000, 4096, PROT_READ) = 0
mprotect(0x2cb000, 4096, PROT_READ) = 0
set_thread_area({entry_number:-1 -> 6, base_addr:0xb7f20940,
limit:1048575, seg_32bit:1, contents:0, read_exec_only:0,
limit_in_pages:1, seg_not_present:0, useable:1}) = 0
munmap(0xb7f21000, 123603) = 0
socket(PF_INET, SOCK_DGRAM, IPPROTO_IP) = 3
fstat64(1, {st_mode=S_IFCHR|0620, st_rdev=makedev(136, 2), ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
0) = 0xb7f3f000
write(1, "Settings for eth0:\n", 19Settings for eth0:
) = 19
ioctl(3, SIOCETHTOOL, 0xbff0e7c0) = 0
write(1, "\tSupported ports: [ MII ]\n", 26 Supported ports: [ MII ]
) = 26
write(1, "\tSupported link modes: 10baseT"..., 52 Supported link
modes: 10baseT/Half 10baseT/Full
) = 52
write(1, "\t 100base"..., 54
100baseT/Half 100baseT/Full
) = 54
write(1, "\t 1000bas"..., 56
1000baseT/Half 1000baseT/Full
) = 56
write(1, "\tSupports auto-negotiation: Yes\n", 32 Supports
auto-negotiation: Yes
) = 32
write(1, "\tAdvertised link modes: 10baseT"..., 52 Advertised link
modes: 10baseT/Half 10baseT/Full
) = 52
write(1, "\t 100base"..., 54
100baseT/Half 100baseT/Full
) = 54
write(1, "\t 1000bas"..., 56
1000baseT/Half 1000baseT/Full
) = 56
write(1, "\tAdvertised auto-negotiation: Ye"..., 34 Advertised
auto-negotiation: Yes
) = 34
write(1, "\tSpeed: 100Mb/s\n", 16 Speed: 100Mb/s
) = 16
write(1, "\tDuplex: Half\n", 14 Duplex: Half
) = 14
write(1, "\tPort: Twisted Pair\n", 20 Port: Twisted Pair
) = 20
write(1, "\tPHYAD: 1\n", 10 PHYAD: 1
) = 10
write(1, "\tTransceiver: internal\n", 23 Transceiver: internal
) = 23
write(1, "\tAuto-negotiation: on\n", 22 Auto-negotiation: on
) = 22
ioctl(3, SIOCETHTOOL, 0xbff0e7c0) = 0
write(1, "\tSupports Wake-on: g\n", 21 Supports Wake-on: g
) = 21
write(1, "\tWake-on: d\n", 12 Wake-on: d
) = 12
ioctl(3, SIOCETHTOOL, 0xbff0e7c0) = 0
write(1, "\tCurrent message level: 0x000000"..., 41 Current message
level: 0x000000ff (255)
) = 41
ioctl(3, SIOCETHTOOL, 0xbff0e7c0) = 0
write(1, "\tLink detected: yes\n", 20 Link detected: yes
) = 20
munmap(0xb7f3f000, 4096) = 0
exit_group(0) = ?
Process 7618 detached
strace mii-tool -v eth0
execve("/sbin/mii-tool", ["mii-tool", "-v", "eth0"], [/* 27 vars */]) =
0
uname({sys="Linux", node="atltst01.dsw.net", ...}) = 0
brk(0) = 0x82ad000
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=123603, ...}) = 0
old_mmap(NULL, 123603, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb7f35000
close(3) = 0
open("/lib/tls/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\20\177"...,
512) = 512
fstat64(3, {st_mode=S_IFREG|0755, st_size=1454546, ...}) = 0
old_mmap(NULL, 1219772, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE,
3, 0) = 0x9ed000
old_mmap(0xb11000, 16384, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x124000) = 0xb11000
old_mmap(0xb15000, 7356, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xb15000
close(3) = 0
old_mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS,
-1, 0) = 0xb7f34000
mprotect(0xb11000, 4096, PROT_READ) = 0
mprotect(0x20b000, 4096, PROT_READ) = 0
set_thread_area({entry_number:-1 -> 6, base_addr:0xb7f34aa0,
limit:1048575, seg_32bit:1, contents:0, read_exec_only:0,
limit_in_pages:1, seg_not_present:0, useable:1}) = 0
munmap(0xb7f35000, 123603) = 0
socket(PF_INET, SOCK_DGRAM, IPPROTO_IP) = 3
ioctl(3, SIOCGMIIPHY, 0x749a40) = 0
ioctl(3, SIOCGMIIREG, 0x749a40) = 0
ioctl(3, SIOCGMIIREG, 0x749a40) = 0
ioctl(3, SIOCGMIIREG, 0x749a40) = 0
ioctl(3, SIOCGMIIREG, 0x749a40) = 0
ioctl(3, SIOCGMIIREG, 0x749a40) = 0
ioctl(3, SIOCGMIIREG, 0x749a40) = 0
ioctl(3, SIOCGMIIREG, 0x749a40) = 0
ioctl(3, SIOCGMIIREG, 0x749a40) = 0
ioctl(3, SIOCGMIIREG, 0x749a40) = 0
fstat64(1, {st_mode=S_IFCHR|0620, st_rdev=makedev(136, 2), ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
0) = 0xb7f53000
write(1, "eth0: negotiated 100baseTx-HD, l"..., 39eth0: negotiated
100baseTx-HD, link ok
) = 39
write(1, " product info: vendor 00:08:18,"..., 48 product info: vendor
00:08:18, model 26 rev 2
) = 48
write(1, " basic mode: autonegotiation "..., 40 basic mode:
autonegotiation enabled
) = 40
write(1, " basic status: autonegotiation "..., 50 basic status:
autonegotiation complete, link ok
) = 50
write(1, " capabilities: 100baseTx-FD 100"..., 64 capabilities:
100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD
) = 64
write(1, " advertising: 100baseTx-FD 100"..., 77 advertising:
100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD flow-control
) = 77
write(1, " link partner: 100baseTx-HD\n", 29 link partner:
100baseTx-HD
) = 29
close(3) = 0
munmap(0xb7f53000, 4096) = 0
exit_group(0) = ?
Process 7627 detached
-----Original Message-----
From: ale-bounces at ale.org [mailto:ale-bounces at ale.org] On Behalf Of
To: ale at ale.org
Christopher Fowler
Sent: Saturday, December 09, 2006 7:39 PM
To: Atlanta Linux Enthusiasts
Subject: Re: [ale] ethtool and mii-tool disagree
On Sat, 2006-12-09 at 18:40 -0500, Jeff Lightner wrote:
> Not the point. I'm not asking which is right but rather why two tools
> on the same server interrogating the same NIC wouldn't both give the
> same answer.
Makes sense.
I would like to know how they come up with their answer. Do they use
ioctl() to get the values?
What does strace say?
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