From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id 921FC43BE7; Mon, 26 Feb 2024 10:15:05 +0100 (CET) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 291A1402BF; Mon, 26 Feb 2024 10:15:05 +0100 (CET) Received: from inbox.dpdk.org (inbox.dpdk.org [95.142.172.178]) by mails.dpdk.org (Postfix) with ESMTP id 65AA940144 for ; Mon, 26 Feb 2024 10:15:03 +0100 (CET) Received: by inbox.dpdk.org (Postfix, from userid 33) id 4F4F043BE8; Mon, 26 Feb 2024 10:15:03 +0100 (CET) From: bugzilla@dpdk.org To: dev@dpdk.org Subject: [DPDK/ethdev Bug 1384] PCAP PMD reconfiguration failure Date: Mon, 26 Feb 2024 09:15:01 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: DPDK X-Bugzilla-Component: ethdev X-Bugzilla-Version: 22.11 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: matias.elo@nokia.com X-Bugzilla-Status: UNCONFIRMED X-Bugzilla-Resolution: X-Bugzilla-Priority: Normal X-Bugzilla-Assigned-To: dev@dpdk.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_id short_desc product version rep_platform op_sys bug_status bug_severity priority component assigned_to reporter target_milestone attachments.created Message-ID: Content-Type: multipart/alternative; boundary=17089389030.4C023C0B.2489731 Content-Transfer-Encoding: 7bit X-Bugzilla-URL: http://bugs.dpdk.org/ Auto-Submitted: auto-generated X-Auto-Response-Suppress: All MIME-Version: 1.0 X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org --17089389030.4C023C0B.2489731 Date: Mon, 26 Feb 2024 10:15:03 +0100 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://bugs.dpdk.org/ Auto-Submitted: auto-generated X-Auto-Response-Suppress: All https://bugs.dpdk.org/show_bug.cgi?id=3D1384 Bug ID: 1384 Summary: PCAP PMD reconfiguration failure Product: DPDK Version: 22.11 Hardware: All OS: All Status: UNCONFIRMED Severity: normal Priority: Normal Component: ethdev Assignee: dev@dpdk.org Reporter: matias.elo@nokia.com Target Milestone: --- Created attachment 275 --> https://bugs.dpdk.org/attachment.cgi?id=3D275&action=3Dedit l2fwd patch to demonstrate issue When a PCAP PMD Ethernet device is first configured, the selected number of= RX and TX queues overrides the max values initially returned by rte_eth_dev_info_get() (max_rx_queues, max_tx_queues). Now, if one tries to reconfigure the device with a larger queue count(s), rte_eth_dev_configure() will fail to an internal capability check. Reconfiguring devices this way is useful for example in CI usage. The issue can be reproduced with the attached simple patch to l2fwd example. Example output from patched l2fwd (v22.11.4): $ sudo ./examples/dpdk-l2fwd --no-pci --vdev net_pcap0,iface=3Dlo -- -p 0x1 EAL: Detected CPU lcores: 48 EAL: Detected NUMA nodes: 1 EAL: Detected static linkage of DPDK EAL: Multi-process socket /var/run/dpdk/rte/mp_socket EAL: Selected IOVA mode 'VA' EAL: VFIO support initialized TELEMETRY: No legacy callbacks, legacy socket not created MAC updating enabled Notice: odd number of ports in portmask. Lcore 0: RX port 0 TX port 0 Initializing port 0...=20 orig. max_rx_queues: 1 orig. max_tx_queues: 1 after conf max_rx_queues: 0 after conf max_tx_queues: 1 Ethdev port_id=3D0 nb_rx_queues=3D1 > 0 EAL: Error - exiting with code: 1 Cause: Cannot configure device: err=3D-22, port=3D0 --=20 You are receiving this mail because: You are the assignee for the bug.= --17089389030.4C023C0B.2489731 Date: Mon, 26 Feb 2024 10:15:03 +0100 MIME-Version: 1.0 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://bugs.dpdk.org/ Auto-Submitted: auto-generated X-Auto-Response-Suppress: All
Bug ID 1384
Summary PCAP PMD reconfiguration failure
Product DPDK
Version 22.11
Hardware All
OS All
Status UNCONFIRMED
Severity normal
Priority Normal
Component ethdev
Assignee dev@dpdk.org
Reporter matias.elo@nokia.com
Target Milestone --- 

Created attachment 275 [details]
l2fwd patch to demonstrate issue

When a PCAP PMD Ethernet device is first configured, the selected number of=
 RX
and TX queues overrides the max values initially returned by
rte_eth_dev_info_get() (max_rx_queues, max_tx_queues). Now, if one tries to
reconfigure the device with a larger queue count(s), rte_eth_dev_configure()
will fail to an internal capability check. Reconfiguring devices this way is
useful for example in CI usage.

The issue can be reproduced with the attached simple patch to l2fwd example.

Example output from patched l2fwd (v22.11.4):

$ sudo ./examples/dpdk-l2fwd --no-pci --vdev net_pcap0,iface=3Dlo -- -p 0x1
EAL: Detected CPU lcores: 48
EAL: Detected NUMA nodes: 1
EAL: Detected static linkage of DPDK
EAL: Multi-process socket /var/run/dpdk/rte/mp_socket
EAL: Selected IOVA mode 'VA'
EAL: VFIO support initialized
TELEMETRY: No legacy callbacks, legacy socket not created
MAC updating enabled
Notice: odd number of ports in portmask.
Lcore 0: RX port 0 TX port 0
Initializing port 0...=20
  orig. max_rx_queues: 1
  orig. max_tx_queues: 1
  after conf max_rx_queues: 0
  after conf max_tx_queues: 1
Ethdev port_id=3D0 nb_rx_queues=3D1 > 0
EAL: Error - exiting with code: 1
  Cause: Cannot configure device: err=3D-22, port=3D0

You are receiving this mail because:
  • You are the assignee for the bug.
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