From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from dpdk.org (dpdk.org [92.243.14.124]) by inbox.dpdk.org (Postfix) with ESMTP id 54527A00C5 for ; Fri, 8 May 2020 04:07:20 +0200 (CEST) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 3111B1DBDE; Fri, 8 May 2020 04:07:20 +0200 (CEST) Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by dpdk.org (Postfix) with ESMTP id 4F2831DBA5; Fri, 8 May 2020 04:07:16 +0200 (CEST) IronPort-SDR: Hm0SMTCFjiAEJpwey+wKELG0pY8kGw1wHq9bbRKAPTofUixoFMp+7HisXxCEKrPhPRlPiCrhhV atAJxdPrnKXA== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 07 May 2020 19:07:16 -0700 IronPort-SDR: fexh9xxCGyC/OIDqFwKnmc2HkV2xyVgRipnW3rTGV71q/CEUxKTTpYz2CjDuTmanZ/ADHjbALO 7dbyyUjMKgJQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.73,366,1583222400"; d="scan'208";a="370304858" Received: from dpdk.sh.intel.com ([10.239.255.59]) by fmsmga001.fm.intel.com with ESMTP; 07 May 2020 19:07:14 -0700 From: Guinan Sun To: dev@dpdk.org Cc: Guinan Sun , stable@dpdk.org Date: Fri, 8 May 2020 01:59:12 +0000 Message-Id: <20200508015913.48764-2-guinanx.sun@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200508015913.48764-1-guinanx.sun@intel.com> References: <20200508015913.48764-1-guinanx.sun@intel.com> Subject: [dpdk-stable] [PATCH 1/2] net/ixgbe: fix defects of macro in VF X-BeenThere: stable@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches for DPDK stable branches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: stable-bounces@dpdk.org Sender: "stable" The defects in the macros UPDATE_VF_STAT and UPDATE_VF_STAT_36BIT exist. If latest is less than last, we will get wrong result. The patch fixes the defect. Fixes: abf7275bbaa2 ("ixgbe: move to drivers/net/") Cc: stable@dpdk.org Signed-off-by: Guinan Sun --- drivers/net/ixgbe/ixgbe_ethdev.c | 20 ++++++++++++++++++-- 1 file changed, 18 insertions(+), 2 deletions(-) diff --git a/drivers/net/ixgbe/ixgbe_ethdev.c b/drivers/net/ixgbe/ixgbe_ethdev.c index cf5f1fe70..08a964399 100644 --- a/drivers/net/ixgbe/ixgbe_ethdev.c +++ b/drivers/net/ixgbe/ixgbe_ethdev.c @@ -94,6 +94,10 @@ #define IXGBE_4_BIT_MASK RTE_LEN2MASK(IXGBE_4_BIT_WIDTH, uint8_t) #define IXGBE_8_BIT_WIDTH CHAR_BIT #define IXGBE_8_BIT_MASK UINT8_MAX +#define IXGBE_32_BIT_WIDTH (CHAR_BIT * 4) +#define IXGBE_32_BIT_MASK RTE_LEN2MASK(IXGBE_32_BIT_WIDTH, uint32_t) +#define IXGBE_36_BIT_WIDTH (CHAR_BIT * 4 + IXGBE_4_BIT_WIDTH) +#define IXGBE_36_BIT_MASK RTE_LEN2MASK(IXGBE_36_BIT_WIDTH, uint64_t) #define IXGBEVF_PMD_NAME "rte_ixgbevf_pmd" /* PMD name */ @@ -388,7 +392,13 @@ static int ixgbe_wait_for_link_up(struct ixgbe_hw *hw); #define UPDATE_VF_STAT(reg, last, cur) \ { \ uint32_t latest = IXGBE_READ_REG(hw, reg); \ - cur += (latest - last) & UINT_MAX; \ + u64 stat = 0; \ + if (latest >= last) \ + stat = latest - last; \ + else \ + stat = (u64)((latest + \ + ((u64)1 << IXGBE_32_BIT_WIDTH)) - last);\ + cur += stat & IXGBE_32_BIT_MASK; \ last = latest; \ } @@ -397,7 +407,13 @@ static int ixgbe_wait_for_link_up(struct ixgbe_hw *hw); u64 new_lsb = IXGBE_READ_REG(hw, lsb); \ u64 new_msb = IXGBE_READ_REG(hw, msb); \ u64 latest = ((new_msb << 32) | new_lsb); \ - cur += (0x1000000000LL + latest - last) & 0xFFFFFFFFFLL; \ + u64 stat = 0; \ + if (latest >= last) \ + stat = latest - last; \ + else \ + stat = (u64)((latest + \ + ((u64)1 << IXGBE_36_BIT_WIDTH)) - last); \ + cur += stat & IXGBE_36_BIT_MASK; \ last = latest; \ } -- 2.17.1