| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Tue, 06 Dec 2011 22:08:05 +0100
From: Wolfgang Zarre <info@...ax.com>
To: Wolfgang Grandegger <wg@...ndegger.com>
CC: Oliver Hartkopp <socketcan@...tkopp.net>, netdev@...r.kernel.org,
linux-can@...r.kernel.org, socketcan-users@...ts.berlios.de,
IreneV <boir1@...dex.ru>,
Stanislav Yelenskiy <stanislavelensky@...oo.com>
Subject: Re: [PATCH net-next v2 2/4] can: cc770: add legacy ISA bus driver
for the CC770 and AN82527
Hello Wolfgang,
> Hi Wolfgang,
>
> On 12/04/2011 07:47 PM, Wolfgang Zarre wrote:
>> Hello Wolfgang,
> ...
>>> Wolfgang, I just sent out v4. Any chance to give this patch a try? It
>>> would be best to use a recent kernel version but I could also adapt the
>>> patch to your kernel version, 2.6.39, I think!?
>>
>> Sorry for my delayed reply, but wasn't earlier possible.
>> Yes, of course, as long as I have the hardware available I can do some
>> tests, even
>> on a recent kernel due the fact having the project so far completed,
>> just another
>> test run on the 9th of December.
>>
>> Due the flood of emails I lost now track which version You would be
>> interested in
>> and maybe also which kernel version, so, please let me know and maybe
>> were I may
>> download the patches.
>
> Well, yes, I was spinning too fast but the patches have been accepted in
> the meantime (actually v6 made it). So you just need to clone the most
> recent version of Dave's net-next tree.
>
>>> As you are using a CC770 chip, I'm especially interested in the relevant
>>> kernel log (dmesg) and "ip -d -s link show".
>>
>> Should be not a problem at all.
>
> Great, thanks.
Ok, here we go:
uname -r: 3.2.0-rc4
modprobe cc770_isa irq=0xa port=0x384 indirect=1 cir=0x61 bcr=0x4A
ip link set can0 up type can bitrate 500000;
kern.log
Dec 6 20:42:19 svserv01 kernel: [ 2111.900735] CAN device driver interface
Dec 6 20:42:19 svserv01 kernel: [ 2111.903072] cc770: CAN netdevice driver
Dec 6 20:42:19 svserv01 kernel: [ 2111.904692] cc770_isa: platform device 0: port=0x384, mem=0x0, irq=10
Dec 6 20:42:19 svserv01 kernel: [ 2111.904726] cc770_isa cc770_isa.0: probing idx=0: port=0x384, mem=0x0, irq=10
Dec 6 20:42:19 svserv01 kernel: [ 2111.904779] cc770_isa cc770_isa.0: (unregistered net_device): i82527 mode with additional functions
Dec 6 20:42:19 svserv01 kernel: [ 2111.906407] cc770_isa cc770_isa.0: device registered (reg_base=0x00000384, irq=10)
Dec 6 20:42:19 svserv01 kernel: [ 2111.906457] cc770_isa: driver for max. 8 devices registered
6 20:44:17 svserv01 kernel: [ 2229.886845] cc770_isa cc770_isa.0: can0: setting BTR0=0x00 BTR1=0x1c
Dec 6 20:44:17 svserv01 kernel: [ 2229.886920] cc770_isa cc770_isa.0: can0: Message object 15 for RX data, RTR, SFF and EFF
Dec 6 20:44:17 svserv01 kernel: [ 2229.886937] cc770_isa cc770_isa.0: can0: Message object 11 for TX data, RTR, SFF and EFF
Dec 6 20:52:40 svserv01 kernel: [ 2733.172845] can: controller area network core (rev 20090105 abi 8)
Dec 6 20:52:40 svserv01 kernel: [ 2733.172967] NET: Registered protocol family 29
Dec 6 20:52:40 svserv01 kernel: [ 2733.178187] can: raw protocol (rev 20090105)
ip -d -s link show
4: can0: <NOARP,UP,LOWER_UP,ECHO> mtu 16 qdisc pfifo_fast state UNKNOWN qlen 10
link/can
can state ERROR-ACTIVE (berr-counter tx 0 rx 0) restart-ms 0
bitrate 500000 sample-point 0.875
tq 125 prop-seg 6 phase-seg1 7 phase-seg2 2 sjw 1
cc770: tseg1 1..16 tseg2 1..8 sjw 1..4 brp 1..64 brp-inc 1
clock 8000000
re-started bus-errors arbit-lost error-warn error-pass bus-off
0 0 0 0 0 0
RX: bytes packets errors dropped overrun mcast
0 0 0 0 0 0
TX: bytes packets errors dropped carrier collsns
0 0 0 0 0 0
After rebooting the PLC with proprietary buggy kernel:
4: can0: <NOARP,UP,LOWER_UP,ECHO> mtu 16 qdisc pfifo_fast state UNKNOWN qlen 10
link/can
can state ERROR-ACTIVE (berr-counter tx 0 rx 0) restart-ms 0
bitrate 500000 sample-point 0.875
tq 125 prop-seg 6 phase-seg1 7 phase-seg2 2 sjw 1
cc770: tseg1 1..16 tseg2 1..8 sjw 1..4 brp 1..64 brp-inc 1
clock 8000000
re-started bus-errors arbit-lost error-warn error-pass bus-off
0 0 0 0 0 0
RX: bytes packets errors dropped overrun mcast
414 267 0 267 0 0
TX: bytes packets errors dropped carrier collsns
0 0 0 0 0 0
After sending 100,000 PDO's with 13ms displacement:
4: can0: <NOARP,UP,LOWER_UP,ECHO> mtu 16 qdisc pfifo_fast state UNKNOWN qlen 10
link/can
can state ERROR-ACTIVE (berr-counter tx 0 rx 0) restart-ms 0
bitrate 500000 sample-point 0.875
tq 125 prop-seg 6 phase-seg1 7 phase-seg2 2 sjw 1
cc770: tseg1 1..16 tseg2 1..8 sjw 1..4 brp 1..64 brp-inc 1
clock 8000000
re-started bus-errors arbit-lost error-warn error-pass bus-off
0 0 0 0 0 0
RX: bytes packets errors dropped overrun mcast
4544 4284 0 331 0 0
TX: bytes packets errors dropped carrier collsns
802660 202653 0 0 0 0
The dropped ones of RX may be the not processed input packages and therefore ok.
Let me know if You need more or some other tests.
>
> Wolfgang.
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Powered by blists - more mailing lists