From patchwork Wed Dec 31 09:51:58 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vlad Zolotarov X-Patchwork-Id: 424764 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 CA52B14010F for ; Wed, 31 Dec 2014 20:52:30 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751500AbaLaJwZ (ORCPT ); Wed, 31 Dec 2014 04:52:25 -0500 Received: from mail-wi0-f177.google.com ([209.85.212.177]:33355 "EHLO mail-wi0-f177.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751226AbaLaJwQ (ORCPT ); Wed, 31 Dec 2014 04:52:16 -0500 Received: by mail-wi0-f177.google.com with SMTP id l15so25326359wiw.4 for ; Wed, 31 Dec 2014 01:52:15 -0800 (PST) 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=v8NE5Ls55gBv6Yvn0r4IoOMHaCj5S1RuudRtPTR+bEI=; b=WQt9wAaypM0KQQXJET3nzlDnLam+hLeTtFiD1m1YO+ZJ0iPvMfAF+571nauZrRJ9kh f2Z9sTvB5KLbgVhU3TimipeaUvnE0PAZI9ZYCYdL728Qtn8W6kwhCR4E1+h7+2Zyi3Qw 2nNdtoL18cwNgn9okknUupEkgrJ3wR4VinzTL/Rha5cKj+47OmacbSSvmtsmXbv1owjW J5KxizPLItyWycK5GeSXX2YZGBviDlNKkGCMSCoXYXHUoNWgrdo85GkvEDSGzk04EWsW 1an6O8oNSi4k+ldm1XBM2Ya2eQHXFuy7pTs+Dx7y2G8Wyrqspoys3yp3YmIqW+hqwAi/ kREA== X-Gm-Message-State: ALoCoQlzY08m1R8lecdwFVw//LV8E8kn7TxaaNktq6gkAe9LRCN1ro9kU9A+2TV/HLl1O6qDe1Ld X-Received: by 10.194.23.6 with SMTP id i6mr72448270wjf.26.1420019535272; Wed, 31 Dec 2014 01:52:15 -0800 (PST) Received: from vladz-laptop.localdomain (bzq-79-179-97-80.red.bezeqint.net. [79.179.97.80]) by mx.google.com with ESMTPSA id wv8sm56932936wjc.44.2014.12.31.01.52.14 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 31 Dec 2014 01:52:14 -0800 (PST) From: Vlad Zolotarov To: netdev@vger.kernel.org Cc: gleb@cloudius-systems.com, avi@cloudius-systems.com, jeffrey.t.kirsher@intel.com, Vlad Zolotarov Subject: [PATCH net-next v1 4/5] ixgbevf: Add RSS Key query code Date: Wed, 31 Dec 2014 11:51:58 +0200 Message-Id: <1420019519-18139-5-git-send-email-vladz@cloudius-systems.com> X-Mailer: git-send-email 2.1.0 In-Reply-To: <1420019519-18139-1-git-send-email-vladz@cloudius-systems.com> References: <1420019519-18139-1-git-send-email-vladz@cloudius-systems.com> Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Signed-off-by: Vlad Zolotarov --- New in v1 (compared to RFC): - Use "if-else" statement instead of a "switch-case" for a single option case (in ixgbevf_get_rss_key()). --- drivers/net/ethernet/intel/ixgbevf/mbx.h | 2 ++ drivers/net/ethernet/intel/ixgbevf/vf.c | 44 ++++++++++++++++++++++++++++++++ drivers/net/ethernet/intel/ixgbevf/vf.h | 1 + 3 files changed, 47 insertions(+) diff --git a/drivers/net/ethernet/intel/ixgbevf/mbx.h b/drivers/net/ethernet/intel/ixgbevf/mbx.h index 3e148a8..9674ac8 100644 --- a/drivers/net/ethernet/intel/ixgbevf/mbx.h +++ b/drivers/net/ethernet/intel/ixgbevf/mbx.h @@ -110,6 +110,8 @@ enum ixgbe_pfvf_api_rev { #define IXGBE_VF_GET_RETA_1 0x0b /* get RETA[12..23] */ #define IXGBE_VF_GET_RETA_2 0x0c /* get RETA[24..31] */ +#define IXGBE_VF_GET_RSS_KEY 0x0d /* get RSS hash key */ + /* GET_QUEUES return data indices within the mailbox */ #define IXGBE_VF_TX_QUEUES 1 /* number of Tx queues supported */ #define IXGBE_VF_RX_QUEUES 2 /* number of Rx queues supported */ diff --git a/drivers/net/ethernet/intel/ixgbevf/vf.c b/drivers/net/ethernet/intel/ixgbevf/vf.c index 8b98cdf..dbac264 100644 --- a/drivers/net/ethernet/intel/ixgbevf/vf.c +++ b/drivers/net/ethernet/intel/ixgbevf/vf.c @@ -290,6 +290,50 @@ static inline int _ixgbevf_get_reta(struct ixgbe_hw *hw, u32 *msgbuf, } /** + * ixgbevf_get_rss_key - get the RSS Random Key + * @hw: pointer to the HW structure + * @reta: buffer to fill with RETA contents. + * + * The "rss_key" buffer should be big enough to contain 10 registers. + * + * Returns: 0 on success. + * if API doesn't support this operation - (-EPERM). + */ +int ixgbevf_get_rss_key(struct ixgbe_hw *hw, u8 *rss_key) +{ + int err; + u32 msgbuf[IXGBE_VFMAILBOX_SIZE]; + + /* Return and error if API doesn't support RSS Random Key retrieval */ + if (hw->api_version != ixgbe_mbox_api_12) + return -EPERM; + + msgbuf[0] = IXGBE_VF_GET_RSS_KEY; + err = hw->mbx.ops.write_posted(hw, msgbuf, 1); + + if (err) + return err; + + err = hw->mbx.ops.read_posted(hw, msgbuf, 11); + + if (err) + return err; + + msgbuf[0] &= ~IXGBE_VT_MSGTYPE_CTS; + + /* If we didn't get an ACK there must have been + * some sort of mailbox error so we should treat it + * as such. + */ + if (msgbuf[0] != (IXGBE_VF_GET_RSS_KEY | IXGBE_VT_MSGTYPE_ACK)) + return IXGBE_ERR_MBX; + + memcpy(rss_key, msgbuf + 1, 40); + + return 0; +} + +/** * ixgbevf_get_reta - get the RSS redirection table (RETA) contents. * @hw: pointer to the HW structure * @reta: buffer to fill with RETA contents. diff --git a/drivers/net/ethernet/intel/ixgbevf/vf.h b/drivers/net/ethernet/intel/ixgbevf/vf.h index 73c1b33..54f53f2b8 100644 --- a/drivers/net/ethernet/intel/ixgbevf/vf.h +++ b/drivers/net/ethernet/intel/ixgbevf/vf.h @@ -209,5 +209,6 @@ int ixgbevf_negotiate_api_version(struct ixgbe_hw *hw, int api); int ixgbevf_get_queues(struct ixgbe_hw *hw, unsigned int *num_tcs, unsigned int *default_tc); int ixgbevf_get_reta(struct ixgbe_hw *hw, u32 *reta); +int ixgbevf_get_rss_key(struct ixgbe_hw *hw, u8 *rss_key); #endif /* __IXGBE_VF_H__ */