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 7087D43F63; Thu, 2 May 2024 04:33:20 +0200 (CEST) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id EDCF840299; Thu, 2 May 2024 04:33:19 +0200 (CEST) Received: from inbox.dpdk.org (inbox.dpdk.org [95.142.172.178]) by mails.dpdk.org (Postfix) with ESMTP id 1E1F84026F for ; Thu, 2 May 2024 04:33:19 +0200 (CEST) Received: by inbox.dpdk.org (Postfix, from userid 33) id F273A43F64; Thu, 2 May 2024 04:33:18 +0200 (CEST) From: bugzilla@dpdk.org To: dev@dpdk.org Subject: [DPDK/ethdev Bug 1432] net/tap: use kernel for TSO offload Date: Thu, 02 May 2024 02:33:19 +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: 24.03 X-Bugzilla-Keywords: X-Bugzilla-Severity: enhancement X-Bugzilla-Who: stephen@networkplumber.org 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=17146171980.Fa2D.3308160 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 --17146171980.Fa2D.3308160 Date: Thu, 2 May 2024 04:33:18 +0200 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=3D1432 Bug ID: 1432 Summary: net/tap: use kernel for TSO offload Product: DPDK Version: 24.03 Hardware: All OS: All Status: UNCONFIRMED Severity: enhancement Priority: Normal Component: ethdev Assignee: dev@dpdk.org Reporter: stephen@networkplumber.org Target Milestone: --- The kernel TAP device supports TSO for doing segmentation offload. This should be used instead of doing GSO inside the TAP PMD because it will improve performance. If using kernel TSO, no copy is necessary in PMD and only a single syscall would be needed for the TSO mbuf. For example, sending a 64K TSO mbuf would become single writev(); instead of multiple allocations and copies followed= by multiple writev's. Doing this would also simplfy code and error handling. --=20 You are receiving this mail because: You are the assignee for the bug.= --17146171980.Fa2D.3308160 Date: Thu, 2 May 2024 04:33:18 +0200 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	1432
Summary	net/tap: use kernel for TSO offload
Product	DPDK
Version	24.03
Hardware	All
OS	All
Status	UNCONFIRMED
Severity	enhancement
Priority	Normal
Component	ethdev
Assignee	dev@dpdk.org
Reporter	stephen@networkplumber.org
Target Milestone	---

The kernel TAP device supports TSO=
 for doing segmentation offload.
This should be used instead of doing GSO inside the TAP PMD because it will
improve performance.

If using kernel TSO, no copy is necessary in PMD and only a single syscall
would be needed for the TSO mbuf.  For example, sending a 64K TSO mbuf would
become single writev(); instead of multiple allocations and copies followed=
 by
multiple writev's.

Doing this would also simplfy code and error handling.

You are receiving this mail because:

You are the assignee for the bug.

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

= --17146171980.Fa2D.3308160--