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From: Jerin Jacob <jerin.jacob@caviumnetworks.com>
To: <dev@dpdk.org>
CC: <thomas.monjalon@6wind.com>, <bruce.richardson@intel.com>, Jerin Jacob
<jerin.jacob@caviumnetworks.com>
Date: Thu, 21 Jul 2016 19:31:46 +0530
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Subject: [dpdk-dev] [PATCH 2/3] net/thunderx: introduce cqe_rx2 HW
capability flag
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Certain thunderx SoC pass has additional optional word
in Rx descriptor to hold tunneling extension info.
Based on this capability, the location where packet pointer
address stored in Rx descriptor will vary.
Signed-off-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>
---
drivers/net/thunderx/base/nicvf_hw.h | 5 +++--
drivers/net/thunderx/nicvf_ethdev.c | 7 ++++++-
2 files changed, 9 insertions(+), 3 deletions(-)
diff --git a/drivers/net/thunderx/base/nicvf_hw.h b/drivers/net/thunderx/base/nicvf_hw.h
index 602a6ff..5629d9c 100644
--- a/drivers/net/thunderx/base/nicvf_hw.h
+++ b/drivers/net/thunderx/base/nicvf_hw.h
@@ -50,8 +50,9 @@
#define NICVF_GET_TX_STATS(reg) \
nicvf_reg_read(nic, NIC_VNIC_TX_STAT_0_4 | (reg << 3))
-
-#define NICVF_CAP_TUNNEL_PARSING (1ULL << 0)
+#define NICVF_CAP_TUNNEL_PARSING (1ULL << 0)
+/* Additional word in Rx descriptor to hold optional tunneling extension info */
+#define NICVF_CAP_CQE_RX2 (1ULL << 1)
enum nicvf_tns_mode {
NIC_TNS_BYPASS_MODE,
diff --git a/drivers/net/thunderx/nicvf_ethdev.c b/drivers/net/thunderx/nicvf_ethdev.c
index 3802d49..f6faddf 100644
--- a/drivers/net/thunderx/nicvf_ethdev.c
+++ b/drivers/net/thunderx/nicvf_ethdev.c
@@ -1142,7 +1142,12 @@ nicvf_dev_rx_queue_setup(struct rte_eth_dev *dev, uint16_t qidx,
rxq->cq_status = nicvf_qset_base(nic, qidx) + NIC_QSET_CQ_0_7_STATUS;
rxq->cq_door = nicvf_qset_base(nic, qidx) + NIC_QSET_CQ_0_7_DOOR;
rxq->precharge_cnt = 0;
- rxq->rbptr_offset = NICVF_CQE_RBPTR_WORD;
+
+ if (nicvf_hw_cap(nic) & NICVF_CAP_CQE_RX2)
+ rxq->rbptr_offset = NICVF_CQE_RX2_RBPTR_WORD;
+ else
+ rxq->rbptr_offset = NICVF_CQE_RBPTR_WORD;
+
/* Alloc completion queue */
if (nicvf_qset_cq_alloc(nic, rxq, rxq->queue_id, nb_desc)) {
--
2.5.5