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

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Message-Id: <201008161848.25691.helmut.schaa@googlemail.com>
Date:	Mon, 16 Aug 2010 18:48:25 +0200
From:	Helmut Schaa <helmut.schaa@...glemail.com>
To:	Andreas <andihartmann@...19freenet.de>
Cc:	Ivo Van Doorn <ivdoorn@...il.com>,
	"Kernel-Mailingliste" <linux-kernel@...r.kernel.org>,
	users@...x00.serialmonkey.com
Subject: Re: [rt2x00-users] rt61pci - bad performance

Am Monday 16 August 2010 schrieb Andreas:
> 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
> 

Good, looks like hw crypto is working then ...

Helmut
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