From mboxrd@z Thu Jan 1 00:00:00 1970
Return-Path: <olivier.matz@6wind.com>
Received: from proxy.6wind.com (host.76.145.23.62.rev.coltfrance.com
[62.23.145.76]) by dpdk.org (Postfix) with ESMTP id 854D2F91D;
Wed, 11 Jan 2017 18:04:20 +0100 (CET)
Received: from glumotte.dev.6wind.com (unknown [10.16.0.195])
by proxy.6wind.com (Postfix) with ESMTP id 700AE23D3F;
Wed, 11 Jan 2017 18:04:16 +0100 (CET)
From: Olivier Matz <olivier.matz@6wind.com>
To: dev@dpdk.org,
helin.zhang@intel.com,
konstantin.ananyev@intel.com
Cc: Guo Fengtian <fengtian.guo@6wind.com>,
stable@dpdk.org
Date: Wed, 11 Jan 2017 18:04:14 +0100
Message-Id: <1484154254-31387-1-git-send-email-olivier.matz@6wind.com>
X-Mailer: git-send-email 2.8.1
Subject: [dpdk-stable] [PATCH] net/ixgbevf: fix stats update after a PF reset
X-BeenThere: stable@dpdk.org
X-Mailman-Version: 2.1.15
Precedence: list
List-Id: patches for DPDK stable branches <stable.dpdk.org>
List-Unsubscribe: <http://dpdk.org/ml/options/stable>,
<mailto:stable-request@dpdk.org?subject=unsubscribe>
List-Archive: <http://dpdk.org/ml/archives/stable/>
List-Post: <mailto:stable@dpdk.org>
List-Help: <mailto:stable-request@dpdk.org?subject=help>
List-Subscribe: <http://dpdk.org/ml/listinfo/stable>,
<mailto:stable-request@dpdk.org?subject=subscribe>
X-List-Received-Date: Wed, 11 Jan 2017 17:04:20 -0000
From: Guo Fengtian <fengtian.guo@6wind.com>
When PF is set down, in VF, the value of stats register is zero.
So only increase stats when it's non zero.
Fixes: af75078fece3 ("first public release")
CC: stable@dpdk.org
Signed-off-by: Guo Fengtian <fengtian.guo@6wind.com>
Signed-off-by: Olivier Matz <olivier.matz@6wind.com>
---
drivers/net/ixgbe/ixgbe_ethdev.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ixgbe/ixgbe_ethdev.c b/drivers/net/ixgbe/ixgbe_ethdev.c
index 2d8641a..455a0c9 100644
--- a/drivers/net/ixgbe/ixgbe_ethdev.c
+++ b/drivers/net/ixgbe/ixgbe_ethdev.c
@@ -389,7 +389,8 @@ static int ixgbe_dev_udp_tunnel_port_del(struct rte_eth_dev *dev,
#define UPDATE_VF_STAT(reg, last, cur) \
{ \
uint32_t latest = IXGBE_READ_REG(hw, reg); \
- cur += (latest - last) & UINT_MAX; \
+ if (latest != 0) \
+ cur += (latest - last) & UINT_MAX; \
last = latest; \
}
@@ -398,7 +399,8 @@ static int ixgbe_dev_udp_tunnel_port_del(struct rte_eth_dev *dev,
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; \
+ if (latest != 0) \
+ cur += (0x1000000000LL + latest - last) & 0xFFFFFFFFFLL; \
last = latest; \
}
--
2.8.1