diff mbox series

[19/19] net/hns3: fix the obtaination of minimum Tx frame length

Message ID 20220930072220.20753-20-liudongdong3@huawei.com (mailing list archive)
State Accepted, archived
Delegated to: Andrew Rybchenko
Headers
Series some bugfixes and clean code for hns3 - part2 |

Checks

Context Check Description
ci/checkpatch success coding style OK
ci/Intel-compilation warning apply issues

Commit Message

Dongdong Liu Sept. 30, 2022, 7:22 a.m. UTC 
  From: Jie Hai <haijie1@huawei.com>

When packet length in Tx is less than length hardware supported,
the minimum frame length in hns3 is used to do padding to avoid
hardware error. Currently, this length is fixed by macro, which
is very unfavorable for subsequent hardware evolution. So fix it
as firmware report.

Fixes: 395b5e08ef8d ("net/hns3: add Tx short frame padding compatibility")
Cc: stable@dpdk.org

Signed-off-by: Jie Hai <haijie1@huawei.com>
Signed-off-by: Dongdong Liu <liudongdong3@huawei.com>
---
 drivers/net/hns3/hns3_cmd.h       | 6 ++++++
 drivers/net/hns3/hns3_ethdev.c    | 4 +++-
 drivers/net/hns3/hns3_ethdev.h    | 3 +--
 drivers/net/hns3/hns3_ethdev_vf.c | 4 +++-
 4 files changed, 13 insertions(+), 4 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/hns3/hns3_cmd.h b/drivers/net/hns3/hns3_cmd.h
index 8ac8b45819..994dfc48cc 100644
--- a/drivers/net/hns3/hns3_cmd.h
+++ b/drivers/net/hns3/hns3_cmd.h
@@ -967,6 +967,12 @@  struct hns3_dev_specs_0_cmd {
 	uint32_t max_tm_rate;
 };
 
+struct hns3_dev_specs_1_cmd {
+	uint8_t rsv0[12];
+	uint8_t min_tx_pkt_len;
+	uint8_t rsv1[11];
+};
+
 struct hns3_query_rpu_cmd {
 	uint32_t tc_queue_num;
 	uint32_t rsv1[2];
diff --git a/drivers/net/hns3/hns3_ethdev.c b/drivers/net/hns3/hns3_ethdev.c
index 60e933998a..813fcedc6a 100644
--- a/drivers/net/hns3/hns3_ethdev.c
+++ b/drivers/net/hns3/hns3_ethdev.c
@@ -2661,14 +2661,17 @@  static void
 hns3_parse_dev_specifications(struct hns3_hw *hw, struct hns3_cmd_desc *desc)
 {
 	struct hns3_dev_specs_0_cmd *req0;
+	struct hns3_dev_specs_1_cmd *req1;
 
 	req0 = (struct hns3_dev_specs_0_cmd *)desc[0].data;
+	req1 = (struct hns3_dev_specs_1_cmd *)desc[1].data;
 
 	hw->max_non_tso_bd_num = req0->max_non_tso_bd_num;
 	hw->rss_ind_tbl_size = rte_le_to_cpu_16(req0->rss_ind_tbl_size);
 	hw->rss_key_size = rte_le_to_cpu_16(req0->rss_key_size);
 	hw->max_tm_rate = rte_le_to_cpu_32(req0->max_tm_rate);
 	hw->intr.int_ql_max = rte_le_to_cpu_16(req0->intr_ql_max);
+	hw->min_tx_pkt_len = req1->min_tx_pkt_len;
 }
 
 static int
@@ -2763,7 +2766,6 @@  hns3_get_capability(struct hns3_hw *hw)
 	hw->tso_mode = HNS3_TSO_HW_CAL_PSEUDO_H_CSUM;
 	hw->vlan_mode = HNS3_HW_SHIFT_AND_DISCARD_MODE;
 	hw->drop_stats_mode = HNS3_PKTS_DROP_STATS_MODE2;
-	hw->min_tx_pkt_len = HNS3_HIP09_MIN_TX_PKT_LEN;
 	pf->tqp_config_mode = HNS3_FLEX_MAX_TQP_NUM_MODE;
 	hw->rss_info.ipv6_sctp_offload_supported = true;
 	hw->udp_cksum_mode = HNS3_SPECIAL_PORT_HW_CKSUM_MODE;
diff --git a/drivers/net/hns3/hns3_ethdev.h b/drivers/net/hns3/hns3_ethdev.h
index 9fe9766736..2457754b3d 100644
--- a/drivers/net/hns3/hns3_ethdev.h
+++ b/drivers/net/hns3/hns3_ethdev.h
@@ -75,7 +75,6 @@ 
 #define HNS3_DEFAULT_MTU		1500UL
 #define HNS3_DEFAULT_FRAME_LEN		(HNS3_DEFAULT_MTU + HNS3_ETH_OVERHEAD)
 #define HNS3_HIP08_MIN_TX_PKT_LEN	33
-#define HNS3_HIP09_MIN_TX_PKT_LEN	9
 
 #define HNS3_BITS_PER_BYTE	8
 
@@ -550,7 +549,7 @@  struct hns3_hw {
 	 * The minimum length of the packet supported by hardware in the Tx
 	 * direction.
 	 */
-	uint32_t min_tx_pkt_len;
+	uint8_t min_tx_pkt_len;
 
 	struct hns3_queue_intr intr;
 	/*
diff --git a/drivers/net/hns3/hns3_ethdev_vf.c b/drivers/net/hns3/hns3_ethdev_vf.c
index 446a0cdbc7..c1bbcf42b1 100644
--- a/drivers/net/hns3/hns3_ethdev_vf.c
+++ b/drivers/net/hns3/hns3_ethdev_vf.c
@@ -701,13 +701,16 @@  static void
 hns3vf_parse_dev_specifications(struct hns3_hw *hw, struct hns3_cmd_desc *desc)
 {
 	struct hns3_dev_specs_0_cmd *req0;
+	struct hns3_dev_specs_1_cmd *req1;
 
 	req0 = (struct hns3_dev_specs_0_cmd *)desc[0].data;
+	req1 = (struct hns3_dev_specs_1_cmd *)desc[1].data;
 
 	hw->max_non_tso_bd_num = req0->max_non_tso_bd_num;
 	hw->rss_ind_tbl_size = rte_le_to_cpu_16(req0->rss_ind_tbl_size);
 	hw->rss_key_size = rte_le_to_cpu_16(req0->rss_key_size);
 	hw->intr.int_ql_max = rte_le_to_cpu_16(req0->intr_ql_max);
+	hw->min_tx_pkt_len = req1->min_tx_pkt_len;
 }
 
 static int
@@ -846,7 +849,6 @@  hns3vf_get_capability(struct hns3_hw *hw)
 	hw->intr.gl_unit = HNS3_INTR_COALESCE_GL_UINT_1US;
 	hw->tso_mode = HNS3_TSO_HW_CAL_PSEUDO_H_CSUM;
 	hw->drop_stats_mode = HNS3_PKTS_DROP_STATS_MODE2;
-	hw->min_tx_pkt_len = HNS3_HIP09_MIN_TX_PKT_LEN;
 	hw->rss_info.ipv6_sctp_offload_supported = true;
 	hw->promisc_mode = HNS3_LIMIT_PROMISC_MODE;