From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3B08EC4332F for ; Mon, 12 Dec 2022 13:50:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233054AbiLLNuq (ORCPT ); Mon, 12 Dec 2022 08:50:46 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50652 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233056AbiLLNuL (ORCPT ); Mon, 12 Dec 2022 08:50:11 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2321B1573E for ; Mon, 12 Dec 2022 05:49:48 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id B738161025 for ; Mon, 12 Dec 2022 13:49:47 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 977DEC433F0; Mon, 12 Dec 2022 13:49:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1670852987; bh=HCUbj1iJgtNULoET1xCQXi/7gDT60mj2a5n7+7wDSow=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=tvRLJmCJuZY+pLuW6xeltlZP3Bg8v1XSZ2/U8ssGEjldRZe9Qf0ndiy0T/Auhxea8 l4vPgHld4b7dQ0cHLQQtHmMzyQLeOPZ6L+YqhI7ZHBct01BprXczR7ulspI+FpLz6J 3QaST9Q+cVekbdEBcwxW4gQpF7QPEzkNS+JL6F/c= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Sylwester Dziedziuch , Jan Sokolowski , Konrad Jankowski , Tony Nguyen , Sasha Levin Subject: [PATCH 4.19 36/49] i40e: Fix for VF MAC address 0 Date: Mon, 12 Dec 2022 14:19:14 +0100 Message-Id: <20221212130915.458546033@linuxfoundation.org> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20221212130913.666185567@linuxfoundation.org> References: <20221212130913.666185567@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Sylwester Dziedziuch [ Upstream commit 08501970472077ed5de346ad89943a37d1692e9b ] After spawning max VFs on a PF, some VFs were not getting resources and their MAC addresses were 0. This was caused by PF sleeping before flushing HW registers which caused VIRTCHNL_VFR_VFACTIVE to not be set in time for VF. Fix by adding a sleep after hw flush. Fixes: e4b433f4a741 ("i40e: reset all VFs in parallel when rebuilding PF") Signed-off-by: Sylwester Dziedziuch Signed-off-by: Jan Sokolowski Tested-by: Konrad Jankowski Signed-off-by: Tony Nguyen Signed-off-by: Sasha Levin --- drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c index e98e3af06cf8..240083201dbf 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c +++ b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c @@ -1269,6 +1269,7 @@ bool i40e_reset_vf(struct i40e_vf *vf, bool flr) i40e_cleanup_reset_vf(vf); i40e_flush(hw); + usleep_range(20000, 40000); clear_bit(I40E_VF_STATE_RESETTING, &vf->vf_states); return true; @@ -1392,6 +1393,7 @@ bool i40e_reset_all_vfs(struct i40e_pf *pf, bool flr) } i40e_flush(hw); + usleep_range(20000, 40000); clear_bit(__I40E_VF_DISABLE, pf->state); return true; -- 2.35.1