Date: Thu, 17 Jul 2014 12:17:19 -0700 From: Adrian Chadd <adrian@freebsd.org> To: John Hay <jhay@meraka.org.za> Cc: "freebsd-wireless@freebsd.org" <freebsd-wireless@freebsd.org>, "freebsd-embedded@freebsd.org" <freebsd-embedded@freebsd.org>, Ian Lepore <ian@freebsd.org> Subject: Re: CAMBRIA and more than one atheros card Message-ID: <CAJ-VmompU4RFqpU==DqzxsW%2BggfHKFqEVLL7FUVa_%2BmTUur64w@mail.gmail.com> In-Reply-To: <20140717103430.GA88108@zibbi.meraka.csir.co.za> References: <20140714184209.GA21922@zibbi.meraka.csir.co.za> <CAJ-VmonQhYv_PiMWcnsMaokKzg-cJRw9wst110s%2BK74JH5dSLQ@mail.gmail.com> <20140714190946.GA49930@zibbi.meraka.csir.co.za> <20140714191416.GB49930@zibbi.meraka.csir.co.za> <CAJ-Vmonfe7pOCJzCXbFU6wxmBssRucbq=Q3_Dbiuic3mNatcrw@mail.gmail.com> <20140714194932.GA51947@zibbi.meraka.csir.co.za> <CAJ-VmokoRVb0_4PPy3KoogeWD8C5_R6BWrLoPsWHM8EsshtzKw@mail.gmail.com> <20140714200015.GA54311@zibbi.meraka.csir.co.za> <CAJ-Vmo=uU0OAq%2BXL8LCPYyhOFXuzKkG%2BVvJ3CqvqMrj1ydXChQ@mail.gmail.com> <20140714203707.GB54311@zibbi.meraka.csir.co.za> <20140717103430.GA88108@zibbi.meraka.csir.co.za>
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I've seen some weird cases in the past where there's just no interrupts making out after boot. I don't know why. Chances are that's what you're seeing - the frame is going out but there's no interrupts. Check vmstat -ia ; see if ath0 is generating interrupts. -a On 17 July 2014 03:34, John Hay <jhay@meraka.org.za> wrote: > On Mon, Jul 14, 2014 at 10:37:07PM +0200, John Hay wrote: >> On Mon, Jul 14, 2014 at 01:02:03PM -0700, Adrian Chadd wrote: >> > >> > Ah, you're not even using it in 11n mode. Ok. >> > >> > Well, that's 72 mbufs allocated, and up to 200 more being allocated >> > during transmit. Then there's the handful of pages being used for DMA >> > descriptors. So yeah, over time that may become a problem. >> > >> > Try doubling the number of bounce buffers available and see what happens. >> >> The first boot looks good, all 3 aths came up. Bounce buffers just >> after login: >> >> tst-11-arm:~ # sysctl hw.busdma >> hw.busdma.total_bpages: 128 >> hw.busdma.zone0.total_bpages: 128 >> hw.busdma.zone0.free_bpages: 128 >> hw.busdma.zone0.reserved_bpages: 0 >> hw.busdma.zone0.active_bpages: 0 >> hw.busdma.zone0.total_bounced: 0 >> hw.busdma.zone0.total_deferred: 0 >> hw.busdma.zone0.lowaddr: 0x4000fff >> hw.busdma.zone0.alignment: 4096 > ... >> Great! At last it seems like we are making progress. I'll leave it >> till the morning and then do a few reboots and then some traffic. >> >> One question, should the active bounce pages keep growing or stabilize >> somewhere? How do I know if I have to few or if there is a leak? >> >> Thanks Adrian for your help. > > I still ran out sometimes during a reboot, so I upped it to 512 and added > a sysctl to show the max that active_bpages has been. Sometimes just > after a reboot active_bpages is low and other times higher, I have seen > 140. A few times during a reboot I see timeouts, which only a reboot > seem to recover from. Can it be a left over config from the previous boot > that does not get cleaned out? Or maybe traffic being received while the > config is happening? > > Here is an example during the boot: > > #################### > ... > ath0: <Atheros 9220> irq 28 at device 1.0 on pci0 > alloc_bounce_pages: numpages 63 > [ath] enabling AN_TOP2_FIXUP > alloc_bounce_pages: numpages 63 > alloc_bounce_pages: numpages 63 > alloc_bounce_pages: numpages 63 > alloc_bounce_pages: numpages 63 > alloc_bounce_pages: numpages 63 > alloc_bounce_pages: numpages 63 > alloc_bounce_pages: numpages 63 > alloc_bounce_pages: numpages 8 > ath0: AR9220 mac 128.2 RF5133 phy 13.0 > ath0: 2GHz radio: 0x0000; 5GHz radio: 0x00c0 > ath1: <Atheros 9220> irq 27 at device 2.0 on pci0 > [ath] enabling AN_TOP2_FIXUP > ath1: AR9220 mac 128.2 RF5133 phy 13.0 > ath1: 2GHz radio: 0x0000; 5GHz radio: 0x00c0 > ath2: <Atheros 5413> irq 26 at device 3.0 on pci0 > ath2: AR5413 mac 10.5 RF5413 phy 6.1 > ath2: 2GHz radio: 0x0000; 5GHz radio: 0x0063 > ixpclk0: <IXP4XX Timer> on ixp0 > ixpiic0: <IXP4XX GPIO-Based I2C Interface> on ixp0 > ... > /sbin/ifconfig.bin wlan0 create wlandev ath0 wlanmode adhoc country ZA > wlan0: Ethernet address: 00:21:a4:35:70:42 > /sbin/ifconfig.bin wlan0 inet6 ifdisabled > /sbin/ifconfig.bin wlan0 -bgscan channel 140 ssid mesh bssid 02:8c:ca:fe:ca:00 > /sbin/ifconfig.bin wlan0 inet6 -ifdisabled > /sbin/ifconfig.bin wlan0 inet6 auto_linklocal > /sbin/ifconfig.bin wlan0 inet6 -ifdisabled > dev.ath.0.debug: 0 -> 8 > /sbin/ifconfig.bin wlan0 up > ath0: ath_init: if_flags 0x8803 > ath0: ath_stop_locked: invalid 0 if_flags 0x8803 > dev.ath.0.debug: 8 -> 0 > ath0: hardware error; resetting > ath0: 0x00000000 0x00000020 0x00000000, 0x00000000 0x00000000 0x00000000 > ar5416StopDmaReceive: dma failed to stop in 10ms > AR_CR=0x00000024 > AR_DIAG_SW=0x42000020 > /sbin/ifconfig.bin wlan0 inet6 fd35:ac5b:b116:10:: prefixlen 64 eui64 alias > /sbin/ifconfig.bin wlan0 inet6 fd35:ac5b:b116:10:: prefixlen 64 alias anycast > /sbin/ifconfig.bin wlan1 create wlandev ath1 wlanmode adhoc country ZA > wlan1: Ethernet address: 00:21:a4:35:6c:96 > /sbin/ifconfig.bin wlan1 inet6 ifdisabled > /sbin/ifconfig.bin wlan1 -bgscan channel 136 ssid mesh bssid 02:88:ca:fe:ca:00 > /sbin/ifconfig.bin wlan1 inet6 -ifdisabled > /sbin/ifconfig.bin wlan1 inet6 auto_linklocal > /sbin/ifconfig.bin wlan1 inet6 -ifdisabled > dev.ath.1.debug: 0 -> 8 > /sbin/ifconfig.bin wlan1 up > ath1: ath_init: if_flags 0x8803 > ath1: ath_stop_locked: invalid 0 if_flags 0x8803 > R[ 0] (DS.V:0xcd027000 DS.P:0x1227000) L:01227060 D:00089000 * > 00000000 00000800 0b802c2c 000000b2 > 0000175f 00000100 2f808080 00000000 00000000 00000000 00000003 > R[ 0] (DS.V:0xcd027060 DS.P:0x1227060) L:012270c0 D:0008a000 > 00000000 00000800 00000000 00000000 > 00000000 00000000 00000000 00000000 00000000 00000000 00000000 > dev.ath.1.debug: 8 -> 0 > /sbin/ifconfig.bin wlan1 inet6 fd35:ac5b:b116:10:: prefixlen 64 eui64 alias > /sbin/ifconfig.bin wlan1 inet6 fd35:ac5b:b116:10:: prefixlen 64 alias anycast > ifa_add_loopback_route: insertion failed: 17 > ifconfig.bin: ioctl (SIOCAIFADDR): File exists > /sbin/ifconfig.bin wlan2 create wlandev ath2 wlanmode adhoc country ZA > wlan2: Ethernet address: 00:21:a4:32:38:c2 > /sbin/ifconfig.bin wlan2 inet6 ifdisabled > ath0: device timeout > ar5416StopDmaReceive: dma failed to stop in 10ms > AR_CR=0x00000024 > AR_DIAG_SW=0x42000020 > /sbin/ifconfig.bin wlan2 -bgscan channel 13 ssid hotspot bssid 02:0d:ca:fe:ca:00 > /sbin/ifconfig.bin wlan2 inet6 -ifdisabled > /sbin/ifconfig.bin wlan2 inet6 auto_linklocal > /sbin/ifconfig.bin wlan2 inet6 -ifdisabled > dev.ath.2.debug: 0 -> 8 > /sbin/ifconfig.bin wlan2 up > ath2: ath_init: if_flags 0x8803 > ath2: ath_stop_locked: invalid 0 if_flags 0x8803 > dev.ath.2.debug: 8 -> 0 > /sbin/ifconfig.bin wlan2 inet 10.56.244.1/24 alias > /sbin/ifconfig.bin wlan2 inet6 fd35:ac5b:b116:38f4:: prefixlen 64 eui64 alias > /sbin/ifconfig.bin wlan2 inet6 fd35:ac5b:b116:38f4:: prefixlen 64 alias anycast > ... > ath0: device timeout > ar5416StopDmaReceive: dma failed to stop in 10ms > AR_CR=0x00000024 > AR_DIAG_SW=0x42000020 > ... > tst-11-arm:~ # uptime > 9:18AM up 2 mins, 1 user, load averages: 1.63, 0.70, 0.28 > tst-11-arm:~ # sysctl hw.busdma > hw.busdma.total_bpages: 512 > hw.busdma.zone0.total_bpages: 512 > hw.busdma.zone0.free_bpages: 375 > hw.busdma.zone0.reserved_bpages: 0 > hw.busdma.zone0.active_bpages: 137 > hw.busdma.zone0.max_active_bpages: 137 > hw.busdma.zone0.total_bounced: 1739 > hw.busdma.zone0.total_deferred: 0 > hw.busdma.zone0.lowaddr: 0x4000fff > hw.busdma.zone0.alignment: 4096 > tst-11-arm:~ # ath0: device timeout > ar5416StopDmaReceive: dma failed to stop in 10ms > AR_CR=0x00000024 > AR_DIAG_SW=0x42000020 > > tst-11-arm:~ # uptime > 9:20AM up 4 mins, 1 user, load averages: 0.68, 0.68, 0.34 > tst-11-arm:~ # sysctl hw.busdma > hw.busdma.total_bpages: 512 > hw.busdma.zone0.total_bpages: 512 > hw.busdma.zone0.free_bpages: 326 > hw.busdma.zone0.reserved_bpages: 0 > hw.busdma.zone0.active_bpages: 186 > hw.busdma.zone0.max_active_bpages: 190 > hw.busdma.zone0.total_bounced: 6592 > hw.busdma.zone0.total_deferred: 0 > hw.busdma.zone0.lowaddr: 0x4000fff > hw.busdma.zone0.alignment: 4096 > tst-11-arm:~ # ath0: device timeout > ar5416StopDmaReceive: dma failed to stop in 10ms > AR_CR=0x00000024 > AR_DIAG_SW=0x42000020 > ath0: device timeout > ar5416StopDmaReceive: dma failed to stop in 10ms > AR_CR=0x00000024 > AR_DIAG_SW=0x42000020 > #################### > > The 2 other interfaces did not seem to have a problem and after a reboot > ath0/wlan0 was working fine again. > > John > -- > John Hay -- jhay@meraka.csir.co.za / jhay@meraka.org.za
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