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 CE0654625E; Tue, 18 Feb 2025 22:04:31 +0100 (CET) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id B7CC9402A0; Tue, 18 Feb 2025 22:04:31 +0100 (CET) Received: from inbox.dpdk.org (inbox.dpdk.org [95.142.172.178]) by mails.dpdk.org (Postfix) with ESMTP id 35AF140264 for ; Tue, 18 Feb 2025 22:04:30 +0100 (CET) Received: by inbox.dpdk.org (Postfix, from userid 33) id 29DFA46260; Tue, 18 Feb 2025 22:04:30 +0100 (CET) From: bugzilla@dpdk.org To: dev@dpdk.org Subject: [DPDK/ethdev Bug 1664] rte_ipv6_addr_is_v4mapped wrong logic Date: Tue, 18 Feb 2025 21:04:30 +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: unspecified X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: sunnylandh@gmail.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 Message-ID: Content-Type: multipart/alternative; boundary=17399126700.df7bAA46.182922 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 --17399126700.df7bAA46.182922 Date: Tue, 18 Feb 2025 22:04:29 +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=3D1664 Bug ID: 1664 Summary: rte_ipv6_addr_is_v4mapped wrong logic Product: DPDK Version: unspecified Hardware: All OS: All Status: UNCONFIRMED Severity: normal Priority: Normal Component: ethdev Assignee: dev@dpdk.org Reporter: sunnylandh@gmail.com Target Milestone: --- rte_ipv6_addr_is_v4mapped() is implemented by comparing the first 32 bits o= f an IPv6 address with the ::ffff:0.0.0.0/96 prefix. https://git.dpdk.org/dpdk/tree/lib/net/rte_ip6.h?id=3Dfba9875559906e04eaeb7= 4532f4cfd51194259a2#n313 The following snippet prints "1", but the loopback address is not a v4mapped address. #include #include int main() { struct rte_ipv6_addr a =3D RTE_IPV6_ADDR_LOOPBACK; printf("%d\n", rte_ipv6_addr_is_v4mapped(&a)); } The function should compare the first 96 bits instead. rte_ipv6_addr_is_v4compat() has the same mistake. --=20 You are receiving this mail because: You are the assignee for the bug.= --17399126700.df7bAA46.182922 Date: Tue, 18 Feb 2025 22:04:30 +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	1664
Summary	rte_ipv6_addr_is_v4mapped wrong logic
Product	DPDK
Version	unspecified
Hardware	All
OS	All
Status	UNCONFIRMED
Severity	normal
Priority	Normal
Component	ethdev
Assignee	dev@dpdk.org
Reporter	sunnylandh@gmail.com
Target Milestone	---

rte_ipv6_addr_is_v4mapped() is imp=
lemented by comparing the first 32 bits of an
IPv6 address with the ::ffff:0.0.0.0/96 prefix.
https://git.dpdk.org/dpdk/tree/lib/net=
/rte_ip6.h?id=3Dfba9875559906e04eaeb74532f4cfd51194259a2#n313

The following snippet prints "1", but the loopback address is not=
 a v4mapped
address.

#include <stdio.h>
#include <rte_ip6.h>

int main() {
  struct rte_ipv6_addr a =3D RTE_IPV6_ADDR_LOOPBACK;
  printf("%d\n", rte_ipv6_addr_is_v4mapped(&a));
}

The function should compare the first 96 bits instead.

rte_ipv6_addr_is_v4compat() has the same mistake.

You are receiving this mail because:

You are the assignee for the bug.

=20=20=20=20=20=20=20=20=20=20

= --17399126700.df7bAA46.182922--