diff mbox

[dpdk-dev,v3] i40e: enable i40e pmd on ARM platform

Message ID 1470387983-12713-1-git-send-email-jianbo.liu@linaro.org (mailing list archive)
State Accepted, archived
Delegated to: Bruce Richardson
Headers

Commit Message

Jianbo Liu Aug. 5, 2016, 9:06 a.m. UTC 
  And add read memory barrier to avoid status inconsistency
between two RX descriptors readings.

Signed-off-by: Jianbo Liu <jianbo.liu@linaro.org>
---
 config/defconfig_arm64-armv8a-linuxapp-gcc | 2 +-
 doc/guides/nics/features/i40e.ini          | 1 +
 drivers/net/i40e/i40e_rxtx.c               | 2 ++
 3 files changed, 4 insertions(+), 1 deletion(-)

Comments

Qi Zhang Sept. 23, 2016, 1:13 a.m. UTC | #1 
Hi

> -----Original Message-----
> From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Jianbo Liu
> Sent: Friday, August 5, 2016 5:06 PM
> To: dev@dpdk.org; Zhang, Helin <helin.zhang@intel.com>; Wu, Jingjing
> <jingjing.wu@intel.com>
> Cc: Jianbo Liu <jianbo.liu@linaro.org>
> Subject: [dpdk-dev] [PATCH v3] i40e: enable i40e pmd on ARM platform
> 
> And add read memory barrier to avoid status inconsistency between two RX
> descriptors readings.
> 
> Signed-off-by: Jianbo Liu <jianbo.liu@linaro.org>

Acted-by: Zhang Qi <qi.z.zhang@intel.com>
Bruce Richardson Sept. 27, 2016, 1:39 p.m. UTC | #2 
On Fri, Sep 23, 2016 at 01:13:17AM +0000, Zhang, Qi Z wrote:
> Hi
> 
> > -----Original Message-----
> > From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Jianbo Liu
> > Sent: Friday, August 5, 2016 5:06 PM
> > To: dev@dpdk.org; Zhang, Helin <helin.zhang@intel.com>; Wu, Jingjing
> > <jingjing.wu@intel.com>
> > Cc: Jianbo Liu <jianbo.liu@linaro.org>
> > Subject: [dpdk-dev] [PATCH v3] i40e: enable i40e pmd on ARM platform
> > 
> > And add read memory barrier to avoid status inconsistency between two RX
> > descriptors readings.
> > 
> > Signed-off-by: Jianbo Liu <jianbo.liu@linaro.org>
> 
> Acted-by: Zhang Qi <qi.z.zhang@intel.com>
> 
Applied to dpdk-next-net/rel_16_11

/Bruce
diff mbox

Patch

diff --git a/config/defconfig_arm64-armv8a-linuxapp-gcc b/config/defconfig_arm64-armv8a-linuxapp-gcc
index 1a17126..08f282b 100644
--- a/config/defconfig_arm64-armv8a-linuxapp-gcc
+++ b/config/defconfig_arm64-armv8a-linuxapp-gcc
@@ -46,6 +46,6 @@  CONFIG_RTE_EAL_IGB_UIO=n
 
 CONFIG_RTE_LIBRTE_IVSHMEM=n
 CONFIG_RTE_LIBRTE_FM10K_PMD=n
-CONFIG_RTE_LIBRTE_I40E_PMD=n
+CONFIG_RTE_LIBRTE_I40E_INC_VECTOR=n
 
 CONFIG_RTE_SCHED_VECTOR=n
diff --git a/doc/guides/nics/features/i40e.ini b/doc/guides/nics/features/i40e.ini
index fb3fb60..0d143bc 100644
--- a/doc/guides/nics/features/i40e.ini
+++ b/doc/guides/nics/features/i40e.ini
@@ -45,3 +45,4 @@  Linux UIO            = Y
 Linux VFIO           = Y
 x86-32               = Y
 x86-64               = Y
+ARMv8                = Y
diff --git a/drivers/net/i40e/i40e_rxtx.c b/drivers/net/i40e/i40e_rxtx.c
index 554d167..57825fb 100644
--- a/drivers/net/i40e/i40e_rxtx.c
+++ b/drivers/net/i40e/i40e_rxtx.c
@@ -994,6 +994,8 @@  i40e_rx_scan_hw_ring(struct i40e_rx_queue *rxq)
 					I40E_RXD_QW1_STATUS_SHIFT;
 		}
 
+		rte_smp_rmb();
+
 		/* Compute how many status bits were set */
 		for (j = 0, nb_dd = 0; j < I40E_LOOK_AHEAD; j++)
 			nb_dd += s[j] & (1 << I40E_RX_DESC_STATUS_DD_SHIFT);