From dd1e461182619323eb0da141952c70465605c312 Mon Sep 17 00:00:00 2001 From: "Wei Hu (Xavier)" Date: Tue, 22 Sep 2020 20:03:17 +0800 Subject: [PATCH] net/hns3: add TSO pseudo header calculation compatibility 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 Signed-off-by: Wei Hu (Xavier) Signed-off-by: Chengchang Tang --- 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 --git a/drivers/net/hns3/hns3_ethdev.c b/drivers/net/hns3/hns3_ethdev.c index 3922df5e62..10cfc5d47d 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 a70223f514..f170df9176 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 c39edf509e..565cf60e76 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 7c7b9de02b..930aa28943 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 5ffe30e661..d7d70f6a1b 100644 --- a/drivers/net/hns3/hns3_rxtx.h +++ b/drivers/net/hns3/hns3_rxtx.h @@ -366,6 +366,23 @@ struct hns3_tx_queue { uint16_t tx_rs_thresh; 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. -- 2.20.1