linux-kernel - Re: [rt2x00-users] rt61pci

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Date:	Mon, 16 Aug 2010 18:33:28 +0200
From:	Andreas <andihartmann@...19freenet.de>
To:	Ivo Van Doorn <ivdoorn@...il.com>,
	Kernel-Mailingliste <linux-kernel@...r.kernel.org>,
	users@...x00.serialmonkey.com,
	Helmut Schaa <helmut.schaa@...glemail.com>
Subject: Re: [rt2x00-users] rt61pci - bad performance

Ivo Van Doorn wrote:
>>>> hw crypto should be enabled by default in rt61pci, however, I don't know
>>>> if it is actually working ;)
>>>
>>> How can I see if it's working?
>>
>> You can add a printk to rt61pci_fill_rxdone, something like:
>>
>> diff --git a/drivers/net/wireless/rt2x00/rt61pci.c b/drivers/net/wireless/rt2x00/rt61pci.c
>> index e539c6c..aa1aafd 100644
>> --- a/drivers/net/wireless/rt2x00/rt61pci.c
>> +++ b/drivers/net/wireless/rt2x00/rt61pci.c
>> @@ -2023,6 +2023,7 @@ static void rt61pci_fill_rxdone(struct queue_entry *entry,
>>                         rxdesc->flags |= RX_FLAG_DECRYPTED;
>>                 else if (rxdesc->cipher_status == RX_CRYPTO_FAIL_MIC)
>>                         rxdesc->flags |= RX_FLAG_MMIC_ERROR;
>> +               printk(KERN_INFO "rt61pci_fill_rxdone: %x\n", rxdesc->cipher_status);
>>         }
>>
>>         /*
>
> Actually check debugfs:
>
> /sys/kernel/debug/ieee80211/phy0/rt61pci/queue/crypto
>
> for the statistics for cryptography.
>
> Ivo

Well, this path doesn't exist - even the crypto-file can't be found.

lsmod | grep rt61
rt61pci                19584  0
rt2x00pci               5646  1 rt61pci
rt2x00lib              31738  2 rt61pci,rt2x00pci
eeprom_93cx6            1429  1 rt61pci
crc_itu_t               1435  2 rt61pci,firewire_core

notebook1:/sys/kernel/debug/ieee80211/phy0 # find -name crypto
notebook1:/sys/kernel/debug/ieee80211/phy0 #

notebook1:/sys/kernel/debug/ieee80211/phy0 # mount | grep debugfs
debugfs on /sys/kernel/debug type debugfs (rw)


The debug message gave tons of:
Aug 16 18:11:47 .... kernel: [ 3435.535149] rt61pci_fill_rxdone: 0
Aug 16 18:11:47 .... kernel: [ 3435.536335] rt61pci_fill_rxdone: 0
Aug 16 18:11:47 .... kernel: [ 3435.537049] rt61pci_fill_rxdone: 0
Aug 16 18:11:47 .... kernel: [ 3435.537697] rt61pci_fill_rxdone: 0
Aug 16 18:11:47 .... kernel: [ 3435.538595] rt61pci_fill_rxdone: 0
Aug 16 18:11:47 .... kernel: [ 3435.543566] rt61pci_fill_rxdone: 0
Aug 16 18:11:47 .... kernel: [ 3435.545187] rt61pci_fill_rxdone: 0
Aug 16 18:11:47 .... kernel: [ 3435.546837] rt61pci_fill_rxdone: 0
Aug 16 18:11:47 .... kernel: [ 3435.547031] rt61pci_fill_rxdone: 0



Kind regards,
Andreas
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