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 D170E46A61; Thu, 26 Jun 2025 11:37:00 +0200 (CEST) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 666DA40156; Thu, 26 Jun 2025 11:37:00 +0200 (CEST) Received: from inbox.dpdk.org (inbox.dpdk.org [95.142.172.178]) by mails.dpdk.org (Postfix) with ESMTP id 7497B400D6 for ; Thu, 26 Jun 2025 11:36:59 +0200 (CEST) Received: by inbox.dpdk.org (Postfix, from userid 33) id 6424446A62; Thu, 26 Jun 2025 11:36:59 +0200 (CEST) From: bugzilla@dpdk.org To: dev@dpdk.org Subject: [DPDK/other Bug 1731] FIB insertion error(-28) after remove all rules Date: Thu, 26 Jun 2025 09:36:58 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: DPDK X-Bugzilla-Component: other X-Bugzilla-Version: 25.03 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: kipi@servers.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=17509306190.EBB6bBC9B.170225 Content-Transfer-Encoding: 7bit X-Bugzilla-URL: https://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 --17509306190.EBB6bBC9B.170225 Date: Thu, 26 Jun 2025 11:36:59 +0200 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.dpdk.org/ Auto-Submitted: auto-generated X-Auto-Response-Suppress: All https://bugs.dpdk.org/show_bug.cgi?id=3D1731 Bug ID: 1731 Summary: FIB insertion error(-28) after remove all rules Product: DPDK Version: 25.03 Hardware: All OS: All Status: UNCONFIRMED Severity: normal Priority: Normal Component: other Assignee: dev@dpdk.org Reporter: kipi@servers.com Target Milestone: --- Created attachment 321 --> https://bugs.dpdk.org/attachment.cgi?id=3D321&action=3Dedit FIB error example The error is due to overflow of the internal FIB counter "rsvd_tbl8s". After this error occurs, it is impossible to add any rules even the FIB is empty. To reproduce this error, simply insert two IP addresses of the following ty= pe with the same next-hope parameter (this is important): struct Network { uint32_t ip; uint16_t prefix; }; /* first insertion with prefix less than 25 doesn't allocate tbl8 entry second insertion with prefix more than 24 will allocate tbl8 entry BUT = only when we pass the different next hope */ const struct Network state[] =3D { {0x3000000, 15}, {0x3000520, 29} }; and delete them. Deleting the first rule will allocate tbl8 entry but "rsvd_tbl8s" counter won't increment. Deleting the second rule will decrease the counter "rsvd_tbl8s" and it will overflow. The full reproduce program is in attachment. --=20 You are receiving this mail because: You are the assignee for the bug.= --17509306190.EBB6bBC9B.170225 Date: Thu, 26 Jun 2025 11:36:59 +0200 MIME-Version: 1.0 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.dpdk.org/ Auto-Submitted: auto-generated X-Auto-Response-Suppress: All
Bug ID 1731
Summary FIB insertion error(-28) after remove all rules
Product DPDK
Version 25.03
Hardware All
OS All
Status UNCONFIRMED
Severity normal
Priority Normal
Component other
Assignee dev@dpdk.org
Reporter kipi@servers.com
Target Milestone --- 

Created [details]
FIB error example

The error is due to overflow of the internal FIB counter "rsvd_tbl8s&q=
uot;. After
this error occurs, it is impossible to add any rules even the FIB is empty.

To reproduce this error, simply insert two IP addresses of the following ty=
pe
with the same next-hope parameter (this is important):
struct Network {
    uint32_t ip;
    uint16_t prefix;
};

/*
    first insertion with prefix less than 25 doesn't allocate tbl8 entry
    second insertion with prefix more than 24 will allocate tbl8 entry BUT =
only
when we pass the different next hope
*/
const struct Network state[] =3D {
    {0x3000000, 15}, {0x3000520, 29}
};

and delete them. Deleting the first rule will allocate tbl8 entry but
"rsvd_tbl8s" counter won't increment. Deleting the second rule wi=
ll decrease
the counter "rsvd_tbl8s" and it will overflow.

The full reproduce program is in attachment.

You are receiving this mail because:
  • You are the assignee for the bug.
=20=20=20=20=20=20=20=20=20=20
= --17509306190.EBB6bBC9B.170225--