From patchwork Tue Dec 30 16:30:34 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vlad Zolotarov X-Patchwork-Id: 424659 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 4C049140119 for ; Wed, 31 Dec 2014 03:31:05 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751455AbaL3Qa7 (ORCPT ); Tue, 30 Dec 2014 11:30:59 -0500 Received: from mail-wi0-f173.google.com ([209.85.212.173]:64880 "EHLO mail-wi0-f173.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751397AbaL3Qa4 (ORCPT ); Tue, 30 Dec 2014 11:30:56 -0500 Received: by mail-wi0-f173.google.com with SMTP id r20so24203709wiv.12 for ; Tue, 30 Dec 2014 08:30:55 -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=trIgiO5lElGEeg9auerU8WOiFWUh0NS2NrwBPdysVwU=; b=VOgM0n1J3+1c22cUIrxMo/PuxCdyOgnXg3QKA6An20gNJMVes5t1eKAURFkU5Q+Y/Y CYNrPeX79K8tLY6FUXnrGbL4gmKKnq5VOvE8fKzLwV2KAJ0V50uY5+qGG4t82ZPicp2I D80aCpmgxoxE2ZXmIV3ufOyYbfziLFfxABtiWNAnGNi+wC5MwmQuCSaDs2JxSCZnbrAu ff1oQd3J/uSxLuVl0/ECWy0tnjZVT0qUyo2/dgt9EuqwUqz8/QCXF08qTH/YxuvjL0Tt dwn5g2EiGMrq0I3QGK/7j03MJeDdZxTxo56A1y78kYjvhFjIZDgCy+K6hwTjF0Iqk95R DZZA== X-Gm-Message-State: ALoCoQmKL3aGSEB0zu4m9zFRdN3CMCV9G19zUFoCSmb7R6G5iANQEz75IWfB/++84xCaKcjjFLsp X-Received: by 10.194.191.164 with SMTP id gz4mr33729535wjc.70.1419957055003; Tue, 30 Dec 2014 08:30:55 -0800 (PST) Received: from vladz-laptop.cloudius-systems.com. 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[84.94.198.183]) by mx.google.com with ESMTPSA id dc1sm39028047wib.18.2014.12.30.08.30.53 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 30 Dec 2014 08:30:54 -0800 (PST) From: Vlad Zolotarov To: netdev@vger.kernel.org Cc: gleb@cloudius-systems.com, avi@cloudius-systems.com, Vlad Zolotarov Subject: [RFC PATCH net-next 4/5] ixgbevf: Add RSS Key query code Date: Tue, 30 Dec 2014 18:30:34 +0200 Message-Id: <1419957035-1078-5-git-send-email-vladz@cloudius-systems.com> X-Mailer: git-send-email 2.1.0 In-Reply-To: <1419957035-1078-1-git-send-email-vladz@cloudius-systems.com> References: <1419957035-1078-1-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 --- drivers/net/ethernet/intel/ixgbevf/mbx.h | 2 ++ drivers/net/ethernet/intel/ixgbevf/vf.c | 48 ++++++++++++++++++++++++++++++++ drivers/net/ethernet/intel/ixgbevf/vf.h | 1 + 3 files changed, 51 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 3ebc882..7987ab0 100644 --- a/drivers/net/ethernet/intel/ixgbevf/vf.c +++ b/drivers/net/ethernet/intel/ixgbevf/vf.c @@ -290,6 +290,54 @@ 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 */ + switch (hw->api_version) { + case ixgbe_mbox_api_12: + break; + default: + 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__ */