[PATCH v2] i40e: enable i40e pmd on ARM platform
From: Jianbo Liu <hidden>
Date: 2016-08-03 10:13:14
Subsystem:
networking drivers, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
And add read memory barrier to avoid status inconsistency between two RX descriptors readings. Signed-off-by: Jianbo Liu <redacted> --- config/defconfig_arm64-armv8a-linuxapp-gcc | 2 +- doc/guides/nics/overview.rst | 2 +- drivers/net/i40e/i40e_rxtx.c | 2 ++ 3 files changed, 4 insertions(+), 2 deletions(-)
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/overview.rst b/doc/guides/nics/overview.rst
index 6abbae6..5175591 100644
--- a/doc/guides/nics/overview.rst
+++ b/doc/guides/nics/overview.rst@@ -138,7 +138,7 @@ Most of these differences are summarized below. Linux VFIO Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Other kdrv Y Y Y ARMv7 Y Y Y - ARMv8 Y Y Y Y Y Y Y Y + ARMv8 Y Y Y Y Y Y Y Y Y Power8 Y Y Y TILE-Gx Y x86-32 Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y
diff --git a/drivers/net/i40e/i40e_rxtx.c b/drivers/net/i40e/i40e_rxtx.c
index 554d167..19cfec4 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_rmb_smp(); + /* 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);
--
2.4.11