diff mbox series

[v2,05/17] net/hns3: add TSO pseudo header calculation compatibility

Message ID 20200922120329.21185-6-huwei013@chinasoftinc.com (mailing list archive)
State Accepted, archived
Delegated to: Ferruh Yigit
Headers
Series updates for hns3 PMD driver |

Checks

Context Check Description
ci/checkpatch success coding style OK

Commit Message

Wei Hu (Xavier) Sept. 22, 2020, 12:03 p.m. UTC 
  From: "Wei Hu (Xavier)" <xavier.huwei@huawei.com>

In kunpeng 920, when process pkts which need TSO, the network driver
need to erase the L4 len value of the TCP TSO pseudo header and
recalculate the pseudo header checksum. kunpeng930 support not need
to erase the L4 len value of the TCP TSO pseudo header.

Signed-off-by: Hongbo Zheng <zhenghongbo3@huawei.com>
Signed-off-by: Wei Hu (Xavier) <xavier.huwei@huawei.com>
Signed-off-by: Chengchang Tang <tangchengchang@huawei.com>
---
 drivers/net/hns3/hns3_ethdev.c    |  2 +
 drivers/net/hns3/hns3_ethdev.h    | 21 +++++++++-
 drivers/net/hns3/hns3_ethdev_vf.c |  2 +
 drivers/net/hns3/hns3_rxtx.c      | 82 ++++++++++++++++++++++++---------------
 drivers/net/hns3/hns3_rxtx.h      | 17 ++++++++
 5 files changed, 92 insertions(+), 32 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/hns3/hns3_ethdev.c b/drivers/net/hns3/hns3_ethdev.c
index 3922df5..10cfc5d 100644
--- a/drivers/net/hns3/hns3_ethdev.c
+++ b/drivers/net/hns3/hns3_ethdev.c
@@ -2916,6 +2916,7 @@  hns3_get_capability(struct hns3_hw *hw)
 		hw->intr.mapping_mode = HNS3_INTR_MAPPING_VEC_RSV_ONE;
 		hw->intr.coalesce_mode = HNS3_INTR_COALESCE_NON_QL;
 		hw->intr.gl_unit = HNS3_INTR_COALESCE_GL_UINT_2US;
+		hw->tso_mode = HNS3_TSO_SW_CAL_PSEUDO_H_CSUM;
 		hw->vlan_mode = HNS3_SW_SHIFT_AND_DISCARD_MODE;
 		hw->min_tx_pkt_len = HNS3_HIP08_MIN_TX_PKT_LEN;
 		return 0;
@@ -2932,6 +2933,7 @@  hns3_get_capability(struct hns3_hw *hw)
 	hw->intr.mapping_mode = HNS3_INTR_MAPPING_VEC_ALL;
 	hw->intr.coalesce_mode = HNS3_INTR_COALESCE_QL;
 	hw->intr.gl_unit = HNS3_INTR_COALESCE_GL_UINT_1US;
+	hw->tso_mode = HNS3_TSO_HW_CAL_PSEUDO_H_CSUM;
 	hw->vlan_mode = HNS3_HW_SHIFT_AND_DISCARD_MODE;
 	hw->min_tx_pkt_len = HNS3_HIP09_MIN_TX_PKT_LEN;
 
diff --git a/drivers/net/hns3/hns3_ethdev.h b/drivers/net/hns3/hns3_ethdev.h
index a70223f..f170df9 100644
--- a/drivers/net/hns3/hns3_ethdev.h
+++ b/drivers/net/hns3/hns3_ethdev.h
@@ -416,6 +416,9 @@  struct hns3_queue_intr {
 	uint8_t gl_unit;
 };
 
+#define HNS3_TSO_SW_CAL_PSEUDO_H_CSUM		0
+#define HNS3_TSO_HW_CAL_PSEUDO_H_CSUM		1
+
 struct hns3_hw {
 	struct rte_eth_dev_data *data;
 	void *io_base;
@@ -476,7 +479,23 @@  struct hns3_hw {
 	uint32_t min_tx_pkt_len;
 
 	struct hns3_queue_intr intr;
-
+	/*
+	 * tso mode.
+	 * value range:
+	 *      HNS3_TSO_SW_CAL_PSEUDO_H_CSUM/HNS3_TSO_HW_CAL_PSEUDO_H_CSUM
+	 *
+	 *  - HNS3_TSO_SW_CAL_PSEUDO_H_CSUM
+	 *     In this mode, because of the hardware constraint, network driver
+	 *     software need erase the L4 len value of the TCP pseudo header
+	 *     and recalculate the TCP pseudo header checksum of packets that
+	 *     need TSO.
+	 *
+	 *  - HNS3_TSO_HW_CAL_PSEUDO_H_CSUM
+	 *     In this mode, hardware support recalculate the TCP pseudo header
+	 *     checksum of packets that need TSO, so network driver software
+	 *     not need to recalculate it.
+	 */
+	uint8_t tso_mode;
 	/*
 	 * vlan mode.
 	 * value range:
diff --git a/drivers/net/hns3/hns3_ethdev_vf.c b/drivers/net/hns3/hns3_ethdev_vf.c
index c39edf5..565cf60 100644
--- a/drivers/net/hns3/hns3_ethdev_vf.c
+++ b/drivers/net/hns3/hns3_ethdev_vf.c
@@ -1165,6 +1165,7 @@  hns3vf_get_capability(struct hns3_hw *hw)
 		hw->intr.mapping_mode = HNS3_INTR_MAPPING_VEC_RSV_ONE;
 		hw->intr.coalesce_mode = HNS3_INTR_COALESCE_NON_QL;
 		hw->intr.gl_unit = HNS3_INTR_COALESCE_GL_UINT_2US;
+		hw->tso_mode = HNS3_TSO_SW_CAL_PSEUDO_H_CSUM;
 		hw->min_tx_pkt_len = HNS3_HIP08_MIN_TX_PKT_LEN;
 		return 0;
 	}
@@ -1180,6 +1181,7 @@  hns3vf_get_capability(struct hns3_hw *hw)
 	hw->intr.mapping_mode = HNS3_INTR_MAPPING_VEC_ALL;
 	hw->intr.coalesce_mode = HNS3_INTR_COALESCE_QL;
 	hw->intr.gl_unit = HNS3_INTR_COALESCE_GL_UINT_1US;
+	hw->tso_mode = HNS3_TSO_HW_CAL_PSEUDO_H_CSUM;
 	hw->min_tx_pkt_len = HNS3_HIP09_MIN_TX_PKT_LEN;
 
 	return 0;
diff --git a/drivers/net/hns3/hns3_rxtx.c b/drivers/net/hns3/hns3_rxtx.c
index 7c7b9de..930aa28 100644
--- a/drivers/net/hns3/hns3_rxtx.c
+++ b/drivers/net/hns3/hns3_rxtx.c
@@ -2188,6 +2188,7 @@  hns3_tx_queue_setup(struct rte_eth_dev *dev, uint16_t idx, uint16_t nb_desc,
 	txq->io_tail_reg = (volatile void *)((char *)txq->io_base +
 					     HNS3_RING_TX_TAIL_REG);
 	txq->min_tx_pkt_len = hw->min_tx_pkt_len;
+	txq->tso_mode = hw->tso_mode;
 	txq->over_length_pkt_cnt = 0;
 	txq->exceed_limit_bd_pkt_cnt = 0;
 	txq->exceed_limit_bd_reassem_fail = 0;
@@ -2858,47 +2859,66 @@  hns3_vld_vlan_chk(struct hns3_tx_queue *txq, struct rte_mbuf *m)
 }
 #endif
 
-uint16_t
-hns3_prep_pkts(__rte_unused void *tx_queue, struct rte_mbuf **tx_pkts,
-	       uint16_t nb_pkts)
+static int
+hns3_prep_pkt_proc(struct hns3_tx_queue *tx_queue, struct rte_mbuf *m)
 {
-	struct hns3_tx_queue *txq;
-	struct rte_mbuf *m;
-	uint16_t i;
 	int ret;
 
-	txq = (struct hns3_tx_queue *)tx_queue;
-
-	for (i = 0; i < nb_pkts; i++) {
-		m = tx_pkts[i];
+#ifdef RTE_LIBRTE_ETHDEV_DEBUG
+	ret = rte_validate_tx_offload(m);
+	if (ret != 0) {
+		rte_errno = -ret;
+		return ret;
+	}
 
-		if (hns3_pkt_is_tso(m) &&
-		    (hns3_pkt_need_linearized(m, m->nb_segs,
-					      txq->max_non_tso_bd_num) ||
-		     hns3_check_tso_pkt_valid(m))) {
+	ret = hns3_vld_vlan_chk(tx_queue, m);
+	if (ret != 0) {
+		rte_errno = EINVAL;
+		return ret;
+	}
+#endif
+	if (hns3_pkt_is_tso(m)) {
+		if (hns3_pkt_need_linearized(m, m->nb_segs,
+					     tx_queue->max_non_tso_bd_num) ||
+		    hns3_check_tso_pkt_valid(m)) {
 			rte_errno = EINVAL;
-			return i;
+			return -EINVAL;
 		}
 
-#ifdef RTE_LIBRTE_ETHDEV_DEBUG
-		ret = rte_validate_tx_offload(m);
-		if (ret != 0) {
-			rte_errno = -ret;
-			return i;
+		if (tx_queue->tso_mode != HNS3_TSO_SW_CAL_PSEUDO_H_CSUM) {
+			/*
+			 * (tso mode != HNS3_TSO_SW_CAL_PSEUDO_H_CSUM) means
+			 * hardware support recalculate the TCP pseudo header
+			 * checksum of packets that need TSO, so network driver
+			 * software not need to recalculate it.
+			 */
+			hns3_outer_header_cksum_prepare(m);
+			return 0;
 		}
+	}
 
-		if (hns3_vld_vlan_chk(txq, m)) {
-			rte_errno = EINVAL;
-			return i;
-		}
-#endif
-		ret = rte_net_intel_cksum_prepare(m);
-		if (ret != 0) {
-			rte_errno = -ret;
-			return i;
-		}
+	ret = rte_net_intel_cksum_prepare(m);
+	if (ret != 0) {
+		rte_errno = -ret;
+		return ret;
+	}
+
+	hns3_outer_header_cksum_prepare(m);
+
+	return 0;
+}
 
-		hns3_outer_header_cksum_prepare(m);
+uint16_t
+hns3_prep_pkts(__rte_unused void *tx_queue, struct rte_mbuf **tx_pkts,
+	       uint16_t nb_pkts)
+{
+	struct rte_mbuf *m;
+	uint16_t i;
+
+	for (i = 0; i < nb_pkts; i++) {
+		m = tx_pkts[i];
+		if (hns3_prep_pkt_proc(tx_queue, m))
+			return i;
 	}
 
 	return i;
diff --git a/drivers/net/hns3/hns3_rxtx.h b/drivers/net/hns3/hns3_rxtx.h
index 5ffe30e..d7d70f6 100644
--- a/drivers/net/hns3/hns3_rxtx.h
+++ b/drivers/net/hns3/hns3_rxtx.h
@@ -367,6 +367,23 @@  struct hns3_tx_queue {
 	struct rte_mbuf **free;
 
 	/*
+	 * tso mode.
+	 * value range:
+	 *      HNS3_TSO_SW_CAL_PSEUDO_H_CSUM/HNS3_TSO_HW_CAL_PSEUDO_H_CSUM
+	 *
+	 *  - HNS3_TSO_SW_CAL_PSEUDO_H_CSUM
+	 *     In this mode, because of the hardware constraint, network driver
+	 *     software need erase the L4 len value of the TCP pseudo header
+	 *     and recalculate the TCP pseudo header checksum of packets that
+	 *     need TSO.
+	 *
+	 *  - HNS3_TSO_HW_CAL_PSEUDO_H_CSUM
+	 *     In this mode, hardware support recalculate the TCP pseudo header
+	 *     checksum of packets that need TSO, so network driver software
+	 *     not need to recalculate it.
+	 */
+	uint8_t tso_mode;
+	/*
 	 * The minimum length of the packet supported by hardware in the Tx
 	 * direction.
 	 */