* [dpdk-dev] ixgbe network card has dev_info.max_rx_queues == 0
@ 2014-08-21 12:26 Sergey Mironov
2014-08-21 12:52 ` Alex Markuze
0 siblings, 1 reply; 6+ messages in thread
From: Sergey Mironov @ 2014-08-21 12:26 UTC (permalink / raw)
To: dev
Hi. I have face a strange error on one of my network cards. Call to
rte_eth_dev_configure returns with error code -22. Increaing the
verbosity level shows the following:
PMD: rte_eth_dev_configure: ethdev port_id=2 nb_rx_queues=3 > 0
EAL: Error - exiting with code: 1
here is the snippet of code which returns the error
./lib/librte_ether/rte_ethdev.c : 513
(*dev->dev_ops->dev_infos_get)(dev, &dev_info);
if (nb_rx_q > dev_info.max_rx_queues) {
PMD_DEBUG_TRACE("ethdev port_id=%d nb_rx_queues=%d > %d\n",
port_id, nb_rx_q, dev_info.max_rx_queues);
return (-EINVAL);
}
What does this error means (what is rx queues of an adapter?) What may
cause such a problem? I am using dpdk 1.5.1r1.
Thanks in advance,
Sergey
^ permalink raw reply [flat|nested] 6+ messages in thread* Re: [dpdk-dev] ixgbe network card has dev_info.max_rx_queues == 0 2014-08-21 12:26 [dpdk-dev] ixgbe network card has dev_info.max_rx_queues == 0 Sergey Mironov @ 2014-08-21 12:52 ` Alex Markuze 2014-08-22 7:12 ` Sergey Mironov 0 siblings, 1 reply; 6+ messages in thread From: Alex Markuze @ 2014-08-21 12:52 UTC (permalink / raw) To: Sergey Mironov; +Cc: dev RX and TX Are short hand for Receive and Transmit Queues. These Queues Store the in/egress packets. Just looking at the info you've sent it tells you that max_rx_queues for this dev is 0 (Clearly something is wrong here) so the nb_rx_q which is 3 is an Invalid Value -EINVAL == -22. On Thu, Aug 21, 2014 at 3:26 PM, Sergey Mironov <grrwlf@gmail.com> wrote: > Hi. I have face a strange error on one of my network cards. Call to > rte_eth_dev_configure returns with error code -22. Increaing the > verbosity level shows the following: > > > PMD: rte_eth_dev_configure: ethdev port_id=2 nb_rx_queues=3 > 0 > EAL: Error - exiting with code: 1 > > here is the snippet of code which returns the error > > > ./lib/librte_ether/rte_ethdev.c : 513 > > (*dev->dev_ops->dev_infos_get)(dev, &dev_info); > if (nb_rx_q > dev_info.max_rx_queues) { > PMD_DEBUG_TRACE("ethdev port_id=%d nb_rx_queues=%d > %d\n", > port_id, nb_rx_q, dev_info.max_rx_queues); > return (-EINVAL); > } > > What does this error means (what is rx queues of an adapter?) What may > cause such a problem? I am using dpdk 1.5.1r1. > > Thanks in advance, > Sergey ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [dpdk-dev] ixgbe network card has dev_info.max_rx_queues == 0 2014-08-21 12:52 ` Alex Markuze @ 2014-08-22 7:12 ` Sergey Mironov [not found] ` <CAKfHP0V=1Er=ecZfgbepG_JV63f9YLG9DtP7tasDg+Wk_phFFA@mail.gmail.com> 0 siblings, 1 reply; 6+ messages in thread From: Sergey Mironov @ 2014-08-22 7:12 UTC (permalink / raw) To: Alex Markuze; +Cc: dev Thanks, I understand that. I see in the ixgbe's code, that dev_info.max_rx_queues is initialized from the hw->mac.max_rx_queues value dev_info->max_rx_queues = (uint16_t)hw->mac.max_rx_queues; dev_info->max_tx_queues = (uint16_t)hw->mac.max_tx_queues; but I can't figure out how this hw->mac is produced. Is it mapped to the memory region controlled by the network adapter directly? 2014-08-21 16:52 GMT+04:00 Alex Markuze <alex@weka.io>: > RX and TX Are short hand for Receive and Transmit Queues. > These Queues Store the in/egress packets. > > Just looking at the info you've sent it tells you that max_rx_queues > for this dev is 0 (Clearly something is wrong here) so the nb_rx_q > which is 3 is an Invalid Value -EINVAL == -22. > > On Thu, Aug 21, 2014 at 3:26 PM, Sergey Mironov <grrwlf@gmail.com> wrote: >> Hi. I have face a strange error on one of my network cards. Call to >> rte_eth_dev_configure returns with error code -22. Increaing the >> verbosity level shows the following: >> >> >> PMD: rte_eth_dev_configure: ethdev port_id=2 nb_rx_queues=3 > 0 >> EAL: Error - exiting with code: 1 >> >> here is the snippet of code which returns the error >> >> >> ./lib/librte_ether/rte_ethdev.c : 513 >> >> (*dev->dev_ops->dev_infos_get)(dev, &dev_info); >> if (nb_rx_q > dev_info.max_rx_queues) { >> PMD_DEBUG_TRACE("ethdev port_id=%d nb_rx_queues=%d > %d\n", >> port_id, nb_rx_q, dev_info.max_rx_queues); >> return (-EINVAL); >> } >> >> What does this error means (what is rx queues of an adapter?) What may >> cause such a problem? I am using dpdk 1.5.1r1. >> >> Thanks in advance, >> Sergey ^ permalink raw reply [flat|nested] 6+ messages in thread
[parent not found: <CAKfHP0V=1Er=ecZfgbepG_JV63f9YLG9DtP7tasDg+Wk_phFFA@mail.gmail.com>]
[parent not found: <CAMOkk_Zew6uTrStxhTUD11etxRZoMmYkqqD_fM54kaRra+O-aQ@mail.gmail.com>]
* [dpdk-dev] Fwd: ixgbe network card has dev_info.max_rx_queues == 0 [not found] ` <CAMOkk_Zew6uTrStxhTUD11etxRZoMmYkqqD_fM54kaRra+O-aQ@mail.gmail.com> @ 2014-08-25 9:41 ` Sergey Mironov 2014-08-26 0:14 ` Stephen Hemminger 0 siblings, 1 reply; 6+ messages in thread From: Sergey Mironov @ 2014-08-25 9:41 UTC (permalink / raw) To: dev Forgot to CC to all ---------- Forwarded message ---------- From: Sergey Mironov <grrwlf@gmail.com> Date: 2014-08-25 13:40 GMT+04:00 Subject: Re: [dpdk-dev] ixgbe network card has dev_info.max_rx_queues == 0 To: Alex Markuze <alex@weka.io> Hi. I've found more data on this issue. My machine (CB-8970) is equipped with two ixgbe and six e1000 ports + one more e1000 port as management interface. I ask the DPDK to allocate 3 TX queues and 3 RX queues for each of 8 working ports, 6 * 8 = 48 queues (see the configuration code snippet at the end of the letter) As a result, I see the message I posted in my first letter: PMD: rte_eth_dev_configure: ethdev port_id=2 nb_rx_queues=3 > 0 EAL: Error - exiting with code: 1 At the same time, if I configure only two ixgbe ports by filtering out others with --use-device, everything works fine. It gives me the idea, that my system has a limited resource 'number of queues' and all the cards share it. Am I correct? Is it possible to view the total amount of queues available for my system? Regards, Sergey PS configuration code for (portid = 0; portid < nb_ports; portid++) { ret = rte_eth_dev_configure((uint8_t) portid, // portid nb_lcores, // nb_lcores == 3 nb_lcores, // nb_lcores == 3 &port_conf); if (ret < 0) { rte_exit(EXIT_FAILURE, "Cannot configure device: " "err=%d, port=%u\n", ret, portid); } ... } 2014-08-23 20:15 GMT+04:00 Alex Markuze <alex@weka.io>: > I can onlt gues. But it is common to use memory mapped IO that is. The cpu > can access some part of the nics memory via the pci bus just like it would > acess its own RAM. > So its possible these region addresses are stored in a BAR. Base address > region. > > On Aug 22, 2014 10:12 AM, "Sergey Mironov" <grrwlf@gmail.com> wrote: >> >> Thanks, I understand that. I see in the ixgbe's code, that >> dev_info.max_rx_queues is initialized from the hw->mac.max_rx_queues >> value >> >> dev_info->max_rx_queues = (uint16_t)hw->mac.max_rx_queues; >> dev_info->max_tx_queues = (uint16_t)hw->mac.max_tx_queues; >> >> but I can't figure out how this hw->mac is produced. Is it mapped to >> the memory region controlled by the network adapter directly? >> >> >> >> 2014-08-21 16:52 GMT+04:00 Alex Markuze <alex@weka.io>: >> > RX and TX Are short hand for Receive and Transmit Queues. >> > These Queues Store the in/egress packets. >> > >> > Just looking at the info you've sent it tells you that max_rx_queues >> > for this dev is 0 (Clearly something is wrong here) so the nb_rx_q >> > which is 3 is an Invalid Value -EINVAL == -22. >> > >> > On Thu, Aug 21, 2014 at 3:26 PM, Sergey Mironov <grrwlf@gmail.com> >> > wrote: >> >> Hi. I have face a strange error on one of my network cards. Call to >> >> rte_eth_dev_configure returns with error code -22. Increaing the >> >> verbosity level shows the following: >> >> >> >> >> >> PMD: rte_eth_dev_configure: ethdev port_id=2 nb_rx_queues=3 > 0 >> >> EAL: Error - exiting with code: 1 >> >> >> >> here is the snippet of code which returns the error >> >> >> >> >> >> ./lib/librte_ether/rte_ethdev.c : 513 >> >> >> >> (*dev->dev_ops->dev_infos_get)(dev, &dev_info); >> >> if (nb_rx_q > dev_info.max_rx_queues) { >> >> PMD_DEBUG_TRACE("ethdev port_id=%d nb_rx_queues=%d > %d\n", >> >> port_id, nb_rx_q, dev_info.max_rx_queues); >> >> return (-EINVAL); >> >> } >> >> >> >> What does this error means (what is rx queues of an adapter?) What may >> >> cause such a problem? I am using dpdk 1.5.1r1. >> >> >> >> Thanks in advance, >> >> Sergey ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [dpdk-dev] Fwd: ixgbe network card has dev_info.max_rx_queues == 0 2014-08-25 9:41 ` [dpdk-dev] Fwd: " Sergey Mironov @ 2014-08-26 0:14 ` Stephen Hemminger 2014-08-26 7:26 ` Sergey Mironov 0 siblings, 1 reply; 6+ messages in thread From: Stephen Hemminger @ 2014-08-26 0:14 UTC (permalink / raw) To: Sergey Mironov; +Cc: dev On Mon, 25 Aug 2014 13:41:34 +0400 Sergey Mironov <grrwlf@gmail.com> wrote: > Hi. I've found more data on this issue. My machine (CB-8970) is > equipped with two ixgbe and six e1000 ports + one more e1000 port as > management interface. > I ask the DPDK to allocate 3 TX queues and 3 RX queues for each of 8 > working ports, 6 * 8 = 48 queues (see the configuration code snippet > at the end of the letter) You need to look at dev_info and not allocate more queues than the hardware supports. Many E1000 devices only support a single queue. ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [dpdk-dev] Fwd: ixgbe network card has dev_info.max_rx_queues == 0 2014-08-26 0:14 ` Stephen Hemminger @ 2014-08-26 7:26 ` Sergey Mironov 0 siblings, 0 replies; 6+ messages in thread From: Sergey Mironov @ 2014-08-26 7:26 UTC (permalink / raw) To: Stephen Hemminger; +Cc: dev Yep, I understand now. The manual [1] says that intel 827574 controller (controlled by e1000 driver) has only 2 ports per port. Thanks for the help. Sergey [1] - http://www.intel.com/content/www/us/en/ethernet-controllers/i211-ethernet-controller-datasheet.html PS I actually have another machine SCB-8973 equipped with i211 controller, where DPDK returns number of queues - zero. Probably, it is a hardware bug, but I'll better start another thread for this issue. 2014-08-26 4:14 GMT+04:00 Stephen Hemminger <stephen@networkplumber.org>: > On Mon, 25 Aug 2014 13:41:34 +0400 > Sergey Mironov <grrwlf@gmail.com> wrote: > >> Hi. I've found more data on this issue. My machine (CB-8970) is >> equipped with two ixgbe and six e1000 ports + one more e1000 port as >> management interface. >> I ask the DPDK to allocate 3 TX queues and 3 RX queues for each of 8 >> working ports, 6 * 8 = 48 queues (see the configuration code snippet >> at the end of the letter) > > You need to look at dev_info and not allocate more queues than the > hardware supports. Many E1000 devices only support a single queue. ^ permalink raw reply [flat|nested] 6+ messages in thread
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2014-08-21 12:26 [dpdk-dev] ixgbe network card has dev_info.max_rx_queues == 0 Sergey Mironov
2014-08-21 12:52 ` Alex Markuze
2014-08-22 7:12 ` Sergey Mironov
[not found] ` <CAKfHP0V=1Er=ecZfgbepG_JV63f9YLG9DtP7tasDg+Wk_phFFA@mail.gmail.com>
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2014-08-25 9:41 ` [dpdk-dev] Fwd: " Sergey Mironov
2014-08-26 0:14 ` Stephen Hemminger
2014-08-26 7:26 ` Sergey Mironov
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