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Mon, 14 Apr 2025 08:18:27 -0400 (EDT) Date: Mon, 14 Apr 2025 14:18:25 +0200 From: Marek =?utf-8?Q?Marczykowski-G=C3=B3recki?= To: Vitaly Lifshits , Jesse Brandeburg , Tony Nguyen , netdev@vger.kernel.org, intel-wired-lan@lists.osuosl.org Cc: regressions@lists.linux.dev, stable@vger.kernel.org, Sasha Levin Message-ID: MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="5JPjsqyE+gD2u5U8" Content-Disposition: inline X-Mailman-Approved-At: Mon, 14 Apr 2025 15:20:28 +0000 X-Mailman-Original-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= invisiblethingslab.com; h=cc:cc:content-type:content-type:date :date:from:from:in-reply-to:message-id:mime-version:reply-to :subject:subject:to:to; s=fm2; t=1744633109; x=1744719509; bh=14 vOFFZCQHiLV/92bFmMrgdRuS1SSchqrTzaRecxFAQ=; b=neFzF5pudr2K9mQAQt USaEElu4vbl3JvJqoKGBCmDb3rwHFLOuiEJNmwkZ7jBU9teCxaMN+PLiACdWQBa8 OF7N38G0zN6Yc5TK0KRywa03hgCbQ+TXomUg+uN6HilLIwlMW+o9bLnJ/Z2BecxZ WtmlRUi/RrofYLZLEnchuh7qKISOu5YoAO6z4luJNl3+v3aHthMMMV17on141duH K5VPDc6b2gqZ9KaQEBYfAzZe5txNrRODL8mCNau85VKdDCPTsVczRInLqnsMiICf VLSomEzB6esqYk+IDVUriIJvMfaZhlpTFaxJ1DsdVVTN3e9in2gfd90Bp9LRoHx4 Y9OQ== X-Mailman-Original-DKIM-Signature: v=1; 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dkim=pass (2048-bit key, unprotected) header.d=messagingengine.com header.i=@messagingengine.com header.a=rsa-sha256 header.s=fm2 header.b=h1deeLkR Subject: [Intel-wired-lan] [REGRESSION] e1000e heavy packet loss on Meteor Lake - 6.14.2 X-BeenThere: intel-wired-lan@osuosl.org X-Mailman-Version: 2.1.30 Precedence: list List-Id: Intel Wired Ethernet Linux Kernel Driver Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-wired-lan-bounces@osuosl.org Sender: "Intel-wired-lan" --5JPjsqyE+gD2u5U8 Content-Type: text/plain; protected-headers=v1; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Date: Mon, 14 Apr 2025 14:18:25 +0200 From: Marek =?utf-8?Q?Marczykowski-G=C3=B3recki?= To: Vitaly Lifshits , Jesse Brandeburg , Tony Nguyen , netdev@vger.kernel.org, intel-wired-lan@lists.osuosl.org Cc: regressions@lists.linux.dev, stable@vger.kernel.org, Sasha Levin Subject: [REGRESSION] e1000e heavy packet loss on Meteor Lake - 6.14.2 Hi, After updating to 6.14.2, the ethernet adapter is almost unusable, I get over 30% packet loss. Bisect says it's this commit: commit 85f6414167da39e0da30bf370f1ecda5a58c6f7b Author: Vitaly Lifshits Date: Thu Mar 13 16:05:56 2025 +0200 e1000e: change k1 configuration on MTP and later platforms =20 [ Upstream commit efaaf344bc2917cbfa5997633bc18a05d3aed27f ] =20 Starting from Meteor Lake, the Kumeran interface between the integr= ated MAC and the I219 PHY works at a different frequency. This causes sp= oradic MDI errors when accessing the PHY, and in rare circumstances could = lead to packet corruption. =20 To overcome this, introduce minor changes to the Kumeran idle state (K1) parameters during device initialization. Hardware reset reverts this configuration, therefore it needs to be applied in a f= ew places. =20 Fixes: cc23f4f0b6b9 ("e1000e: Add support for Meteor Lake") Signed-off-by: Vitaly Lifshits Tested-by: Avigail Dahan Signed-off-by: Tony Nguyen Signed-off-by: Sasha Levin drivers/net/ethernet/intel/e1000e/defines.h | 3 ++ drivers/net/ethernet/intel/e1000e/ich8lan.c | 80 +++++++++++++++++++++= ++++++-- drivers/net/ethernet/intel/e1000e/ich8lan.h | 4 ++ 3 files changed, 82 insertions(+), 5 deletions(-) My system is Novacustom V540TU laptop with Intel Core Ultra 5 125H. And the e1000e driver is running in a Xen HVM (with PCI passthrough). Interestingly, I have also another one with Intel Core Ultra 7 155H where the issue does not happen. I don't see what is different about network adapter there, they look identical on lspci (but there are differences about other devices)... I see the commit above was already backported to other stable branches too... #regzbot introduced: 85f6414167da39e0da30bf370f1ecda5a58c6f7b --=20 Best Regards, Marek Marczykowski-G=C3=B3recki Invisible Things Lab --5JPjsqyE+gD2u5U8 Content-Type: application/pgp-signature; name=signature.asc -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEhrpukzGPukRmQqkK24/THMrX1ywFAmf8/REACgkQ24/THMrX 1yypfAf+N7oPT/p3gMa3SFQmHBMe2BJBSC+RhLh+KBD8CpszZRO4TGw6f5u6ss0f wRDbgw5f2w2SGumk/BABv0ghWH//T+PwC2IoEjjjUtUYzXM6BENGTPqk+XArMnlB S5MPYyFcIaraR12oVMm+gUpHnO0OH/eNN6eXh1CUr8sxZ+wvRkDOZQccEfSBiAE5 yC3GGmAyAK+XcQDdVZsQe1h7d6nOuZGNLVe3yLdUcESZlUetRH6HLVuE+yM3O+IA A/kW5vVHO07FhNwdNsgh9n/XdUmt2t1B7yvg7GRT+EHXP+mTco/UeYYq/HkGodEt uIX8rA3eaDdORKHQU8tqIf2Lekbcyg== =3xGN -----END PGP SIGNATURE----- --5JPjsqyE+gD2u5U8-- From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from fout-b5-smtp.messagingengine.com (fout-b5-smtp.messagingengine.com [202.12.124.148]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2913229615F; 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Mon, 14 Apr 2025 08:18:27 -0400 (EDT) Date: Mon, 14 Apr 2025 14:18:25 +0200 From: Marek =?utf-8?Q?Marczykowski-G=C3=B3recki?= To: Vitaly Lifshits , Jesse Brandeburg , Tony Nguyen , netdev@vger.kernel.org, intel-wired-lan@lists.osuosl.org Cc: regressions@lists.linux.dev, stable@vger.kernel.org, Sasha Levin Subject: [REGRESSION] e1000e heavy packet loss on Meteor Lake - 6.14.2 Message-ID: Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="5JPjsqyE+gD2u5U8" Content-Disposition: inline --5JPjsqyE+gD2u5U8 Content-Type: text/plain; protected-headers=v1; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Date: Mon, 14 Apr 2025 14:18:25 +0200 From: Marek =?utf-8?Q?Marczykowski-G=C3=B3recki?= To: Vitaly Lifshits , Jesse Brandeburg , Tony Nguyen , netdev@vger.kernel.org, intel-wired-lan@lists.osuosl.org Cc: regressions@lists.linux.dev, stable@vger.kernel.org, Sasha Levin Subject: [REGRESSION] e1000e heavy packet loss on Meteor Lake - 6.14.2 Hi, After updating to 6.14.2, the ethernet adapter is almost unusable, I get over 30% packet loss. Bisect says it's this commit: commit 85f6414167da39e0da30bf370f1ecda5a58c6f7b Author: Vitaly Lifshits Date: Thu Mar 13 16:05:56 2025 +0200 e1000e: change k1 configuration on MTP and later platforms =20 [ Upstream commit efaaf344bc2917cbfa5997633bc18a05d3aed27f ] =20 Starting from Meteor Lake, the Kumeran interface between the integr= ated MAC and the I219 PHY works at a different frequency. This causes sp= oradic MDI errors when accessing the PHY, and in rare circumstances could = lead to packet corruption. =20 To overcome this, introduce minor changes to the Kumeran idle state (K1) parameters during device initialization. Hardware reset reverts this configuration, therefore it needs to be applied in a f= ew places. =20 Fixes: cc23f4f0b6b9 ("e1000e: Add support for Meteor Lake") Signed-off-by: Vitaly Lifshits Tested-by: Avigail Dahan Signed-off-by: Tony Nguyen Signed-off-by: Sasha Levin drivers/net/ethernet/intel/e1000e/defines.h | 3 ++ drivers/net/ethernet/intel/e1000e/ich8lan.c | 80 +++++++++++++++++++++= ++++++-- drivers/net/ethernet/intel/e1000e/ich8lan.h | 4 ++ 3 files changed, 82 insertions(+), 5 deletions(-) My system is Novacustom V540TU laptop with Intel Core Ultra 5 125H. And the e1000e driver is running in a Xen HVM (with PCI passthrough). Interestingly, I have also another one with Intel Core Ultra 7 155H where the issue does not happen. I don't see what is different about network adapter there, they look identical on lspci (but there are differences about other devices)... I see the commit above was already backported to other stable branches too... #regzbot introduced: 85f6414167da39e0da30bf370f1ecda5a58c6f7b --=20 Best Regards, Marek Marczykowski-G=C3=B3recki Invisible Things Lab --5JPjsqyE+gD2u5U8 Content-Type: application/pgp-signature; name=signature.asc -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEhrpukzGPukRmQqkK24/THMrX1ywFAmf8/REACgkQ24/THMrX 1yypfAf+N7oPT/p3gMa3SFQmHBMe2BJBSC+RhLh+KBD8CpszZRO4TGw6f5u6ss0f wRDbgw5f2w2SGumk/BABv0ghWH//T+PwC2IoEjjjUtUYzXM6BENGTPqk+XArMnlB S5MPYyFcIaraR12oVMm+gUpHnO0OH/eNN6eXh1CUr8sxZ+wvRkDOZQccEfSBiAE5 yC3GGmAyAK+XcQDdVZsQe1h7d6nOuZGNLVe3yLdUcESZlUetRH6HLVuE+yM3O+IA A/kW5vVHO07FhNwdNsgh9n/XdUmt2t1B7yvg7GRT+EHXP+mTco/UeYYq/HkGodEt uIX8rA3eaDdORKHQU8tqIf2Lekbcyg== =3xGN -----END PGP SIGNATURE----- --5JPjsqyE+gD2u5U8--