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Date: Sat, 20 Jun 2015 18:42:27 +0200
From: Andrew Lunn <andrew@...n.ch>
To: David Miller <davem@...emloft.net>
Cc: netdev <netdev@...r.kernel.org>,
Guenter Roeck <linux@...ck-us.net>,
Vivien Didelot <vivien.didelot@...oirfairelinux.com>,
Cory Tusar <cory.tusar@...1solutions.com>,
Andrew Lunn <andrew@...n.ch>
Subject: [PATCH 0/6] debugfs for mv88e6xxx
This patchset adds some debugfs files for seeing into a mv88e6xxx
family of switch chips.
# cat atu
DB T/P Vec State Addr
003 Port 008 7 00:22:02:00:18:44
003 Port 008 6 80:ee:73:83:60:27
005 Port 020 7 94:10:3e:80:bc:f3
0f8 Port 001 6 8e:25:13:53:44:de
This walks all possible entries, so is a bit slow, but is always
correct.
# cat device_map
Target Port
0 15
1 15
2 15
3 15
4 15
5 15
6 15
7 15
8 15
9 15
-->snip<--
31 15
A rather boring example, since i only have one switch here. But this shows
the routing between multiple switches.
# cat regs
GLOBAL GLOBAL2 0 1 2 3 4 5 6
0: c804 0 1e4f 100f 100f 1e4f 1e0f e07 e07
1: fe 0 3 3 3 3 3 c03e c03f
2: 0 ffff 0 0 0 0 0 0 0
3: 0 ffff 1721 1721 1721 1721 1721 1721 1721
4: 6000 258 433 431 431 433 433 373f 433
5: 0 ff 0 0 0 0 0 0 0
6: c000 1f0f 2026 2025 2023 3020 4020 501f 6020
7: 0 707f 0 0 0 0 0 0 0
8: 0 7800 2080 2080 2080 2080 2080 2080 2080
9: 0 1600 1 1 1 1 1 1 1
a: 148 0 0 0 0 0 0 0 0
b: 4000 1000 1 2 4 8 10 20 40
c: 0 7f 0 0 0 0 0 0 0
d: ffff 5f3 0 0 0 0 0 0 0
e: ffff 6 0 0 0 0 0 0 0
f: ffff f00 dada dada dada dada dada dada dada
10: 0 0 0 0 0 0 0 0 0
11: 0 0 0 0 0 0 0 0 0
12: 5555 0 0 0 0 0 0 0 0
13: 5555 0 1a 0 0 1df0 0 1e07 0
14: aaaa 400 0 0 0 0 0 0 0
15: aaaa 0 0 0 0 0 0 0 0
16: ffff 0 6011 6011 6011 6011 33 33 0
17: ffff 0 0 0 0 0 0 0 0
18: fa41 1844 3210 3210 3210 3210 3210 3210 3210
19: 0 1e1 7654 7654 7654 7654 7654 7654 7654
1a: 5550 0 0 0 0 0 0 0 0
1b: 1fb f869 8000 8000 8000 8000 8000 8000 8000
1c: 0 0 0 0 0 0 0 0 0
1d: c00 0 0 0 0 0 0 0 0
1e: 0 0 0 0 0 0 0 0 0
1f: 0 0 0 0 0 0 0 0 0
All the switch registers which are directly accessible.
# cat stats
Statistic Port 0 Port 1 Port 2 Port 3 Port 4 Port 5 Port 6
in_good_octets: 2176 0 0 4263711 0 499540 0
in_bad_octets: 46050 0 0 50196 0 0 0
in_unicast: 0 0 0 7693 0 7691 0
in_broadcasts: 0 0 0 0 0 3 0
in_multicasts: 34 0 0 0 0 27 0
in_pause: 0 0 0 0 0 0 0
in_undersize: 0 0 0 0 0 0 0
in_fragments: 45 0 0 2 0 0 0
in_oversize: 0 0 0 0 0 0 0
in_jabber: 0 0 0 0 0 0 0
in_rx_error: 0 0 0 0 0 0 0
in_fcs_error: 159 0 0 37 0 0 0
out_octets: 808 0 0 496608 336 4267159 0
out_unicast: 0 0 0 7691 0 7693 0
out_broadcasts: 1 0 0 3 0 0 0
out_multicasts: 9 0 0 6 4 34 0
out_pause: 0 0 0 0 0 0 0
excessive: 0 0 0 0 0 0 0
collisions: 0 0 0 0 0 0 0
deferred: 0 0 0 0 0 0 0
single: 0 0 0 0 0 0 0
multiple: 0 0 0 0 0 0 0
out_fcs_error: 0 0 0 0 0 0 0
late: 0 0 0 0 0 0 0
hist_64bytes: 36 0 0 7577 0 7574 0
hist_65_127bytes: 53 0 0 241 4 298 0
hist_128_255bytes: 50 0 0 12 0 10 0
hist_256_511bytes: 43 0 0 8 0 2 0
hist_512_1023bytes: 18 0 0 7573 0 7564 0
hist_1024_max_bytes: 3 0 0 19 0 0 0
sw_in_discards: 0 0 0 0 0 0 0
sw_in_filtered: 0 0 0 0 0 0 0
sw_out_filtered: 34 0 0 7693 0 7721 0
Of particular interest here is that you get to see all ports,
including the CPU port and any DSA ports. You cannot get statistics
for these ports via ethtool.
Andrew Lunn (6):
dsa: mv88e6xxx: Add debugfs interface for registers
dsa: mv88e6xxx: Add debugfs interface for ATU
dsa: mv88x6xxx: Refactor getting a single statistic
dsa: mv88x6xxx: Add debugfs interface for statistics
dsa: mv88x6xxx: Add debugfs interface for device map
dsa: mv88x6xxx: Add debugfs interface for scratch registers
drivers/net/dsa/mv88e6xxx.c | 348 ++++++++++++++++++++++++++++++++++++++++----
drivers/net/dsa/mv88e6xxx.h | 13 ++
2 files changed, 334 insertions(+), 27 deletions(-)
--
2.1.4
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