From patchwork Wed Oct 21 16:37:39 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lan Tianyu X-Patchwork-Id: 533952 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 6138F140D16 for ; Thu, 22 Oct 2015 03:53:58 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756020AbbJUQtk (ORCPT ); Wed, 21 Oct 2015 12:49:40 -0400 Received: from mga14.intel.com ([192.55.52.115]:35049 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755977AbbJUQti (ORCPT ); Wed, 21 Oct 2015 12:49:38 -0400 Received: from orsmga003.jf.intel.com ([10.7.209.27]) by fmsmga103.fm.intel.com with ESMTP; 21 Oct 2015 09:49:38 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.17,712,1437462000"; d="scan'208";a="668919532" Received: from lantianyu-ws.sh.intel.com (HELO localhost) ([10.239.159.159]) by orsmga003.jf.intel.com with ESMTP; 21 Oct 2015 09:49:33 -0700 From: Lan Tianyu To: bhelgaas@google.com, carolyn.wyborny@intel.com, donald.c.skidmore@intel.com, eddie.dong@intel.com, nrupal.jani@intel.com, yang.z.zhang@intel.com, agraf@suse.de, kvm@vger.kernel.org, pbonzini@redhat.com, qemu-devel@nongnu.org, emil.s.tantilov@intel.com, intel-wired-lan@lists.osuosl.org, jeffrey.t.kirsher@intel.com, jesse.brandeburg@intel.com, john.ronciak@intel.com, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, matthew.vick@intel.com, mitch.a.williams@intel.com, netdev@vger.kernel.org, shannon.nelson@intel.com Cc: Lan Tianyu Subject: [RFC Patch 07/12] IXGBEVF: Add new mail box event for migration Date: Thu, 22 Oct 2015 00:37:39 +0800 Message-Id: <1445445464-5056-8-git-send-email-tianyu.lan@intel.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1445445464-5056-1-git-send-email-tianyu.lan@intel.com> References: <1445445464-5056-1-git-send-email-tianyu.lan@intel.com> Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org VF status in the PF driver needs to be restored after migration and reset VF hardware. This patch is to add a new event for VF driver to notify PF driver to restore status. Signed-off-by: Lan Tianyu --- drivers/net/ethernet/intel/ixgbevf/mbx.h | 3 +++ drivers/net/ethernet/intel/ixgbevf/vf.c | 10 ++++++++++ drivers/net/ethernet/intel/ixgbevf/vf.h | 1 + 3 files changed, 14 insertions(+) diff --git a/drivers/net/ethernet/intel/ixgbevf/mbx.h b/drivers/net/ethernet/intel/ixgbevf/mbx.h index 82f44e0..22761d8 100644 --- a/drivers/net/ethernet/intel/ixgbevf/mbx.h +++ b/drivers/net/ethernet/intel/ixgbevf/mbx.h @@ -112,6 +112,9 @@ enum ixgbe_pfvf_api_rev { #define IXGBE_VF_GET_RETA 0x0a /* VF request for RETA */ #define IXGBE_VF_GET_RSS_KEY 0x0b /* get RSS hash key */ +/* mail box event for live migration */ +#define IXGBE_VF_NOTIFY_RESUME 0x0c /* VF notify PF migration to restore status */ + /* length of permanent address message returned from PF */ #define IXGBE_VF_PERMADDR_MSG_LEN 4 /* word in permanent address message with the current multicast type */ diff --git a/drivers/net/ethernet/intel/ixgbevf/vf.c b/drivers/net/ethernet/intel/ixgbevf/vf.c index d1339b0..1e4e5e6 100644 --- a/drivers/net/ethernet/intel/ixgbevf/vf.c +++ b/drivers/net/ethernet/intel/ixgbevf/vf.c @@ -717,6 +717,15 @@ int ixgbevf_get_queues(struct ixgbe_hw *hw, unsigned int *num_tcs, return err; } +static void ixgbevf_notify_resume_vf(struct ixgbe_hw *hw) +{ + struct ixgbe_mbx_info *mbx = &hw->mbx; + u32 msgbuf[1]; + + msgbuf[0] = IXGBE_VF_NOTIFY_RESUME; + mbx->ops.write_posted(hw, msgbuf, 1); +} + static const struct ixgbe_mac_operations ixgbevf_mac_ops = { .init_hw = ixgbevf_init_hw_vf, .reset_hw = ixgbevf_reset_hw_vf, @@ -729,6 +738,7 @@ static const struct ixgbe_mac_operations ixgbevf_mac_ops = { .update_mc_addr_list = ixgbevf_update_mc_addr_list_vf, .set_uc_addr = ixgbevf_set_uc_addr_vf, .set_vfta = ixgbevf_set_vfta_vf, + .notify_resume = ixgbevf_notify_resume_vf, }; const struct ixgbevf_info ixgbevf_82599_vf_info = { diff --git a/drivers/net/ethernet/intel/ixgbevf/vf.h b/drivers/net/ethernet/intel/ixgbevf/vf.h index 6a3f4eb..a25fe81 100644 --- a/drivers/net/ethernet/intel/ixgbevf/vf.h +++ b/drivers/net/ethernet/intel/ixgbevf/vf.h @@ -70,6 +70,7 @@ struct ixgbe_mac_operations { s32 (*disable_mc)(struct ixgbe_hw *); s32 (*clear_vfta)(struct ixgbe_hw *); s32 (*set_vfta)(struct ixgbe_hw *, u32, u32, bool); + void (*notify_resume)(struct ixgbe_hw *); }; enum ixgbe_mac_type {