From patchwork Mon Mar 30 18:35:27 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vlad Zolotarov X-Patchwork-Id: 456298 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 AAC4814018C for ; Tue, 31 Mar 2015 05:35:59 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753458AbbC3Sf4 (ORCPT ); Mon, 30 Mar 2015 14:35:56 -0400 Received: from mail-wg0-f45.google.com ([74.125.82.45]:34502 "EHLO mail-wg0-f45.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753410AbbC3Sfp (ORCPT ); Mon, 30 Mar 2015 14:35:45 -0400 Received: by wgbdm7 with SMTP id dm7so78691177wgb.1 for ; Mon, 30 Mar 2015 11:35:43 -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=h9Tat556dzYsEgdZIa5WVBgIt95sEU1YNu6fE9lFDOY=; b=E4wZOLxjIHidWfM6gY0Ze97u6NralSGAOZais02cNzbIurtP9T98dZriSadrK8+pee snx+8vuu3aMZf7VlUPVfiDluGJBQz5UNp89mjOTxT5c8yfZZIrEwEA6jccoIxYW+2Dkh PMMyrurdyerwMuJLKogmdQ36sS9PaBLFCxp7dovJj75eanlVIMkxfjUuXFfDNErsSvrP 8SB9S7Abu5iNPpUBVTLaH5uB/MH7yhV4o+SsCmYEvIqBqHadcKs7kRAYiWoMB1LVKqh9 CAtBmJaJQnA4ErmlaJlZDFs/WqaCQ+OTUbFNvmLH5Ih2Xqg+/76GGG4vVP7QxOWNgWji BWIA== X-Gm-Message-State: ALoCoQkRqYY3HSpN8BQN77UrRmqqlJBH+biy+vofFN7ImQr6FfuR2If0xCX7Qq89paIgjXGZ0pss X-Received: by 10.180.98.137 with SMTP id ei9mr24430164wib.92.1427740543810; Mon, 30 Mar 2015 11:35:43 -0700 (PDT) Received: from vladz-laptop.localdomain ([109.65.117.109]) by mx.google.com with ESMTPSA id gd6sm17450407wib.17.2015.03.30.11.35.42 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 30 Mar 2015 11:35:42 -0700 (PDT) From: Vlad Zolotarov To: netdev@vger.kernel.org Cc: jeffrey.t.kirsher@intel.com, intel-wired-lan@lists.osuosl.org, avi@cloudius-systems.com, gleb@cloudius-systems.com, Vlad Zolotarov Subject: [PATCH net-next v10 5/7] ixgbe: Add GET_RSS_KEY command to VF-PF channel commands set Date: Mon, 30 Mar 2015 21:35:27 +0300 Message-Id: <1427740529-9605-6-git-send-email-vladz@cloudius-systems.com> X-Mailer: git-send-email 2.1.0 In-Reply-To: <1427740529-9605-1-git-send-email-vladz@cloudius-systems.com> References: <1427740529-9605-1-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 Tested-by: Phil Schmitt --- New in v10: - Return more self-explaining values. 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 | 21 +++++++++++++++++++++ 2 files changed, 22 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 81f54c3..d03b592 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c @@ -982,6 +982,24 @@ 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) +{ + u32 *rss_key = &msgbuf[1]; + + /* Check if the operation is permitted */ + if (!adapter->vfinfo[vf].rss_query_enabled) + return -EPERM; + + /* verify the PF is supporting the correct API */ + if (adapter->vfinfo[vf].vf_api != ixgbe_mbox_api_12) + return -EOPNOTSUPP; + + 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; @@ -1041,6 +1059,9 @@ 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;