From patchwork Sun Mar 29 16:11:35 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vlad Zolotarov X-Patchwork-Id: 455812 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 085991400A0 for ; Mon, 30 Mar 2015 03:12:09 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752458AbbC2QMF (ORCPT ); Sun, 29 Mar 2015 12:12:05 -0400 Received: from mail-wi0-f182.google.com ([209.85.212.182]:34775 "EHLO mail-wi0-f182.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752597AbbC2QLw (ORCPT ); Sun, 29 Mar 2015 12:11:52 -0400 Received: by wibg7 with SMTP id g7so72595477wib.1 for ; Sun, 29 Mar 2015 09:11:50 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=IQelgyselc92H/tYem5N4o2IoT+FSxCfPQ0Zc5QWEa4=; b=INRpRBsdaRFbtytlw1rPsKC/5Iei0eyxaR80NWdpFFs1Cob0vsxAAGWAneOpBYc6Nt EidG8OOJWguS9ZPFzf3VRR7B59Gt5t0/coI8Bt3cGiklLt4XPfps2ijgUOuwHscj1Sv8 nPxgz5zJ3eg5uklQqpajclo1awUd7yrjZ+J31lsf08sl8bbMAsejfR9obnZBcxx3NrOB WXF6kfUJanc61usCiB0M6oyMPT76txsJWdh7r3c8UuyLGyxkcnh2++hrKhdtYlFM+FfN 5j3vVH4Ozbczr5GoEzRqA61/wtSGOmIPW91ena5C2pKc4w/TxDpA00QJd5tO2dsV7Rvb fT/g== X-Gm-Message-State: ALoCoQn8vHbocOX3P+LIzwjqXxDPGW4ZiCu3ZGF7zRSTMlUCyAqfariBn0T/N9WlkBkH2kt9/Evj X-Received: by 10.180.75.233 with SMTP id f9mr14192794wiw.5.1427645510009; Sun, 29 Mar 2015 09:11:50 -0700 (PDT) Received: from vladz-laptop.cloudius-systems.com. ([212.143.139.214]) by mx.google.com with ESMTPSA id hq4sm6558496wib.0.2015.03.29.09.11.48 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sun, 29 Mar 2015 09:11:49 -0700 (PDT) From: Vlad Zolotarov To: netdev@vger.kernel.org Cc: jeffrey.t.kirsher@intel.com, avi@cloudius-systems.com, gleb@cloudius-systems.com, Vlad Zolotarov Subject: [PATCH net-next v9 5/7] ixgbe: Add GET_RSS_KEY command to VF-PF channel commands set Date: Sun, 29 Mar 2015 19:11:35 +0300 Message-Id: <1427645497-8339-6-git-send-email-vladz@cloudius-systems.com> X-Mailer: git-send-email 2.1.0 In-Reply-To: <1427645497-8339-1-git-send-email-vladz@cloudius-systems.com> References: <1427645497-8339-1-git-send-email-vladz@cloudius-systems.com> Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org For 82599 and x540 VFs and PF share the same RSS Key. Therefore we will return the same RSS key for all VFs. Support for other devices will be added later. Signed-off-by: Vlad Zolotarov --- New in v9: - Reduce the support to 82599 and x540 devices only. - Get rid of registers access in GET_VF_RSS_KEY flow: - Get the RSS HASH Key value from the PF's adapter->rss_key[]. New in v5: - Use a newly added netdev op to allow/prevent the RSS Hash Key querying on a per-VF basis. New in v3: - Added a support for x550 devices. New in v1 (compared to RFC): - Use "if-else" statement instead of a "switch-case" for a single option case (in ixgbe_get_vf_rss_key()). --- drivers/net/ethernet/intel/ixgbe/ixgbe_mbx.h | 1 + drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c | 25 +++++++++++++++++++++++++ 2 files changed, 26 insertions(+) diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_mbx.h b/drivers/net/ethernet/intel/ixgbe/ixgbe_mbx.h index 3522f53..b1e4703 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_mbx.h +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_mbx.h @@ -100,6 +100,7 @@ enum ixgbe_pfvf_api_rev { /* mailbox API, version 1.2 VF requests */ #define IXGBE_VF_GET_RETA 0x0a /* VF request for RETA */ +#define IXGBE_VF_GET_RSS_KEY 0x0b /* get RSS key */ /* length of permanent address message returned from PF */ #define IXGBE_VF_PERMADDR_MSG_LEN 4 diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c index 8424e7f..4d87458 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c @@ -996,6 +996,28 @@ static int ixgbe_get_vf_reta(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf) return 0; } +static int ixgbe_get_vf_rss_key(struct ixgbe_adapter *adapter, + u32 *msgbuf, u32 vf) +{ + struct ixgbe_hw *hw = &adapter->hw; + u32 *rss_key = &msgbuf[1]; + + /* verify the PF is supporting the correct API */ + if (!adapter->vfinfo[vf].rss_query_enabled || + (adapter->vfinfo[vf].vf_api != ixgbe_mbox_api_12)) + return -EPERM; + + /* Read the RSS KEY. + * We only support 82599 and x540 devices at the moment. + */ + if (hw->mac.type >= ixgbe_mac_X550) + return -1; + + memcpy(rss_key, adapter->rss_key, sizeof(adapter->rss_key)); + + return 0; +} + static int ixgbe_rcv_msg_from_vf(struct ixgbe_adapter *adapter, u32 vf) { u32 mbx_size = IXGBE_VFMAILBOX_SIZE; @@ -1055,6 +1077,9 @@ static int ixgbe_rcv_msg_from_vf(struct ixgbe_adapter *adapter, u32 vf) case IXGBE_VF_GET_RETA: retval = ixgbe_get_vf_reta(adapter, msgbuf, vf); break; + case IXGBE_VF_GET_RSS_KEY: + retval = ixgbe_get_vf_rss_key(adapter, msgbuf, vf); + break; default: e_err(drv, "Unhandled Msg %8.8x\n", msgbuf[0]); retval = IXGBE_ERR_MBX;