September 2021 - Linuxarm - mailweb.openeuler.org

[linuxarm] [PATCH v2] libhns: Add a new mmap mode
by Chengchang Tang 18 Sep '21

18 Sep '21

Add a new mmap mode support for hns. All the subsequent new features will be completed in a similar implementation of mmap. In the new mmap mode, the user space driver use the offset sent by kernel space driver to complete the mmap instead of a hard-coded offset. Forward compatibility is guaranteed in this patch. Signed-off-by: Chengchang Tang <tangchengchang(a)huawei.com> --- kernel-headers/rdma/hns-abi.h | 21 +++++++++- providers/hns/hns_roce_u.c | 87 ++++++++++++++++++++++++++++++------------ providers/hns/hns_roce_u.h | 1 + providers/hns/hns_roce_u_abi.h | 2 +- 4 files changed, 85 insertions(+), 26 deletions(-) diff --git a/kernel-headers/rdma/hns-abi.h b/kernel-headers/rdma/hns-abi.h index 42b1776..bb9a02d 100644 --- a/kernel-headers/rdma/hns-abi.h +++ b/kernel-headers/rdma/hns-abi.h @@ -83,11 +83,30 @@ struct hns_roce_ib_create_qp_resp { __aligned_u64 cap_flags; }; +enum hns_roce_alloc_uctx_comp_flag { + HNS_ROCE_ALLOC_UCTX_COMP_CONFIG = 1 << 0, +}; + +enum hns_roce_alloc_uctx_resp_config { + HNS_ROCE_UCTX_RESP_MMAP_KEY_EN = 1 << 0, +}; + +enum hns_roce_alloc_uctx_req_config { + HNS_ROCE_UCTX_REQ_EN_MMAP_KEY = 1 << 0, +}; + +struct hns_roce_ib_alloc_ucontext { + __u32 comp; + __u32 config; +}; + struct hns_roce_ib_alloc_ucontext_resp { __u32 qp_tab_size; __u32 cqe_size; __u32 srq_tab_size; - __u32 reserved; + __u8 config; + __u8 rsv[3]; + __aligned_u64 db_mmap_key; }; struct hns_roce_ib_alloc_pd_resp { diff --git a/providers/hns/hns_roce_u.c b/providers/hns/hns_roce_u.c index 3b31ad3..02ac181 100644 --- a/providers/hns/hns_roce_u.c +++ b/providers/hns/hns_roce_u.c @@ -95,16 +95,67 @@ static const struct verbs_context_ops hns_common_ops = { .get_srq_num = hns_roce_u_get_srq_num, }; +static int hns_roce_mmap(struct hns_roce_device *hr_dev, + struct hns_roce_context *context, int cmd_fd, + uint64_t db_mmap_key) +{ + int page_size = hr_dev->page_size; + + context->uar = mmap(NULL, page_size, PROT_READ | PROT_WRITE, + MAP_SHARED, cmd_fd, db_mmap_key); + if (context->uar == MAP_FAILED) + return -EINVAL; + + return 0; +} + +static int hns_roce_legacy_mmap(struct hns_roce_device *hr_dev, + struct hns_roce_context *context, int cmd_fd) +{ + int offset = 0; + + context->uar = mmap(NULL, hr_dev->page_size, PROT_READ | PROT_WRITE, + MAP_SHARED, cmd_fd, offset); + if (context->uar == MAP_FAILED) + return -EINVAL; + + offset += hr_dev->page_size; + + if (hr_dev->hw_version == HNS_ROCE_HW_VER1) { + /* + * when vma->vm_pgoff is 1, the cq_tptr_base includes 64K CQ, + * a pointer of CQ need 2B size + */ + context->cq_tptr_base = mmap(NULL, HNS_ROCE_CQ_DB_BUF_SIZE, + PROT_READ | PROT_WRITE, MAP_SHARED, + cmd_fd, offset); + if (context->cq_tptr_base == MAP_FAILED) + goto db_free; + } + return 0; + +db_free: + munmap(context->uar, hr_dev->page_size); + context->uar = NULL; + return -EINVAL; +} + +static void ucontext_set_cmd(struct hns_roce_alloc_ucontext *cmd) +{ + cmd->comp = HNS_ROCE_ALLOC_UCTX_COMP_CONFIG; + cmd->config = HNS_ROCE_UCTX_REQ_EN_MMAP_KEY; +} + static struct verbs_context *hns_roce_alloc_context(struct ibv_device *ibdev, int cmd_fd, void *private_data) { struct hns_roce_device *hr_dev = to_hr_dev(ibdev); struct hns_roce_alloc_ucontext_resp resp = {}; + struct hns_roce_alloc_ucontext cmd = {}; struct ibv_device_attr dev_attrs; struct hns_roce_context *context; - struct ibv_get_context cmd; - int offset = 0; + int ret; int i; context = verbs_init_and_alloc_context(ibdev, cmd_fd, context, ibv_ctx, @@ -112,10 +163,14 @@ static struct verbs_context *hns_roce_alloc_context(struct ibv_device *ibdev, if (!context) return NULL; - if (ibv_cmd_get_context(&context->ibv_ctx, &cmd, sizeof(cmd), + ucontext_set_cmd(&cmd); + if (ibv_cmd_get_context(&context->ibv_ctx, &cmd.ibv_cmd, sizeof(cmd), &resp.ibv_resp, sizeof(resp))) goto err_free; + context->mmap_key_support = !!(resp.config & + HNS_ROCE_UCTX_RESP_MMAP_KEY_EN); + if (!resp.cqe_size) context->cqe_size = HNS_ROCE_CQE_SIZE; else if (resp.cqe_size <= HNS_ROCE_V3_CQE_SIZE) @@ -153,26 +208,14 @@ static struct verbs_context *hns_roce_alloc_context(struct ibv_device *ibdev, context->max_cqe = dev_attrs.max_cqe; context->max_srq_wr = dev_attrs.max_srq_wr; context->max_srq_sge = dev_attrs.max_srq_sge; + if (context->mmap_key_support) + ret = hns_roce_mmap(hr_dev, context, cmd_fd, resp.db_mmap_key); + else + ret = hns_roce_legacy_mmap(hr_dev, context, cmd_fd); - context->uar = mmap(NULL, hr_dev->page_size, PROT_READ | PROT_WRITE, - MAP_SHARED, cmd_fd, offset); - if (context->uar == MAP_FAILED) + if (ret) goto err_free; - offset += hr_dev->page_size; - - if (hr_dev->hw_version == HNS_ROCE_HW_VER1) { - /* - * when vma->vm_pgoff is 1, the cq_tptr_base includes 64K CQ, - * a pointer of CQ need 2B size - */ - context->cq_tptr_base = mmap(NULL, HNS_ROCE_CQ_DB_BUF_SIZE, - PROT_READ | PROT_WRITE, MAP_SHARED, - cmd_fd, offset); - if (context->cq_tptr_base == MAP_FAILED) - goto db_free; - } - pthread_spin_init(&context->uar_lock, PTHREAD_PROCESS_PRIVATE); verbs_set_ops(&context->ibv_ctx, &hns_common_ops); @@ -180,10 +223,6 @@ static struct verbs_context *hns_roce_alloc_context(struct ibv_device *ibdev, return &context->ibv_ctx; -db_free: - munmap(context->uar, hr_dev->page_size); - context->uar = NULL; - err_free: verbs_uninit_context(&context->ibv_ctx); free(context); diff --git a/providers/hns/hns_roce_u.h b/providers/hns/hns_roce_u.h index 0d7abd8..126c9d3 100644 --- a/providers/hns/hns_roce_u.h +++ b/providers/hns/hns_roce_u.h @@ -180,6 +180,7 @@ struct hns_roce_context { unsigned int max_srq_sge; int max_cqe; unsigned int cqe_size; + bool mmap_key_support; }; struct hns_roce_pd { diff --git a/providers/hns/hns_roce_u_abi.h b/providers/hns/hns_roce_u_abi.h index e56f9d3..295808b 100644 --- a/providers/hns/hns_roce_u_abi.h +++ b/providers/hns/hns_roce_u_abi.h @@ -42,7 +42,7 @@ DECLARE_DRV_CMD(hns_roce_alloc_pd, IB_USER_VERBS_CMD_ALLOC_PD, DECLARE_DRV_CMD(hns_roce_create_cq, IB_USER_VERBS_CMD_CREATE_CQ, hns_roce_ib_create_cq, hns_roce_ib_create_cq_resp); DECLARE_DRV_CMD(hns_roce_alloc_ucontext, IB_USER_VERBS_CMD_GET_CONTEXT, - empty, hns_roce_ib_alloc_ucontext_resp); + hns_roce_ib_alloc_ucontext, hns_roce_ib_alloc_ucontext_resp); DECLARE_DRV_CMD(hns_roce_create_qp, IB_USER_VERBS_CMD_CREATE_QP, hns_roce_ib_create_qp, hns_roce_ib_create_qp_resp); -- 2.9.5

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[linuxarm] [PATCH 0/1] RDMA/hns: Add new mmap implementation
by Chengchang Tang 17 Sep '21

17 Sep '21

This patch add a new mmap implementaion for hns, subsequent new mmap types will be implemented using this method. Chengchang Tang (1): RDMA/hns: Add new mmap implementation drivers/infiniband/hw/hns/hns_roce_device.h | 21 ++++ drivers/infiniband/hw/hns/hns_roce_main.c | 144 +++++++++++++++++++++++++++- include/uapi/rdma/hns-abi.h | 21 +++- 3 files changed, 181 insertions(+), 5 deletions(-) -- 2.9.5

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[linuxarm] [PATCH ofed-dev 0/1] Add new mmap mode
by Chengchang Tang 16 Sep '21

16 Sep '21

This patch add new mmap mode for libhns, and subsequent new features which need add mmap types will be implemented using this mmap mode. Chengchang Tang (1): libhns: Add a new mmap mode kernel-headers/rdma/hns-abi.h | 21 ++++++++++- providers/hns/hns_roce_u.c | 86 ++++++++++++++++++++++++++++++------------ providers/hns/hns_roce_u.h | 1 + providers/hns/hns_roce_u_abi.h | 2 +- 4 files changed, 84 insertions(+), 26 deletions(-) -- 2.9.5

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[RFC PATCH net-next] net: hns3: add dql info when tx timeout
by Yufeng Mo 16 Sep '21

16 Sep '21

When tx timeout occurs, the info of dql maybe helpful, so print these info to hns3_get_tx_timeo_queue_info(). Signed-off-by: Yufeng Mo <moyufeng(a)huawei.com> --- drivers/net/ethernet/hisilicon/hns3/hns3_enet.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c index 22af3d6ce178..d590f920ffee 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c @@ -2677,6 +2677,13 @@ static bool hns3_get_tx_timeo_queue_info(struct net_device *ndev) if (netif_xmit_stopped(q) && time_after(jiffies, (trans_start + ndev->watchdog_timeo))) { +#ifdef CONFIG_BQL + struct dql *dql = &q->dql; + + netdev_info(ndev, "DQL info last_cnt: %u, queued: %u, adj_limit: %u, completed: %u\n", + dql->last_obj_cnt, dql->num_queued, + dql->adj_limit, dql->num_completed); +#endif timeout_queue = i; netdev_info(ndev, "queue state: 0x%lx, delta msecs: %u\n", q->state, -- 2.33.0

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[PATCH V3 net-next 0/4] ethtool: extend coalesce uAPI
by Yufeng Mo 15 Sep '21

15 Sep '21

In order to support some configuration in coalesce uAPI, this series extend coalesce uAPI and add support for CQE mode. Below is some test result with HNS3 driver: 1. old ethtool(ioctl) + new kernel: estuary:/$ ethtool -c eth0 Coalesce parameters for eth0: Adaptive RX: on TX: on stats-block-usecs: 0 sample-interval: 0 pkt-rate-low: 0 pkt-rate-high: 0 rx-usecs: 20 rx-frames: 0 rx-usecs-irq: 0 rx-frames-irq: 0 tx-usecs: 20 tx-frames: 0 tx-usecs-irq: 0 tx-frames-irq: 0 rx-usecs-low: 0 rx-frame-low: 0 tx-usecs-low: 0 tx-frame-low: 0 rx-usecs-high: 0 rx-frame-high: 0 tx-usecs-high: 0 tx-frame-high: 0 2. ethtool(netlink with cqe mode) + kernel without cqe mode: estuary:/$ ethtool -c eth0 Coalesce parameters for eth0: Adaptive RX: on TX: on stats-block-usecs: n/a sample-interval: n/a pkt-rate-low: n/a pkt-rate-high: n/a rx-usecs: 20 rx-frames: 0 rx-usecs-irq: n/a rx-frames-irq: n/a tx-usecs: 20 tx-frames: 0 tx-usecs-irq: n/a tx-frames-irq: n/a rx-usecs-low: n/a rx-frame-low: n/a tx-usecs-low: n/a tx-frame-low: n/a rx-usecs-high: 0 rx-frame-high: n/a tx-usecs-high: 0 tx-frame-high: n/a CQE mode RX: n/a TX: n/a 3. ethool(netlink with cqe mode) + kernel with cqe mode: estuary:/$ ethtool -c eth0 Coalesce parameters for eth0: Adaptive RX: on TX: on stats-block-usecs: n/a sample-interval: n/a pkt-rate-low: n/a pkt-rate-high: n/a rx-usecs: 20 rx-frames: 0 rx-usecs-irq: n/a rx-frames-irq: n/a tx-usecs: 20 tx-frames: 0 tx-usecs-irq: n/a tx-frames-irq: n/a rx-usecs-low: n/a rx-frame-low: n/a tx-usecs-low: n/a tx-frame-low: n/a rx-usecs-high: 0 rx-frame-high: n/a tx-usecs-high: 0 tx-frame-high: n/a CQE mode RX: off TX: off 4. ethool(netlink without cqe mode) + kernel with cqe mode: estuary:/$ ethtool -c eth0 Coalesce parameters for eth0: Adaptive RX: on TX: on stats-block-usecs: n/a sample-interval: n/a pkt-rate-low: n/a pkt-rate-high: n/a rx-usecs: 20 rx-frames: 0 rx-usecs-irq: n/a rx-frames-irq: n/a tx-usecs: 20 tx-frames: 0 tx-usecs-irq: n/a tx-frames-irq: n/a rx-usecs-low: n/a rx-frame-low: n/a tx-usecs-low: n/a tx-frame-low: n/a rx-usecs-high: 0 rx-frame-high: n/a tx-usecs-high: 0 tx-frame-high: n/a Change log: V2 -> V3: fix some warning on W=1 builds in #2 V1 -> V2: 1. fix compile error using allmodconfig in #2 2. move some property-related modifications from #2 to #1 for better review suggested by Jakub Kicinski. Change log from RFC: V3 -> V4: add document explaining the difference between CQE and EQE in #1 suggested by Jakub Kicinski. V2 -> V3: 1. split #1 into adding new parameter and adding new attributes. 2. use NLA_POLICY_MAX(NLA_U8, 1) instead of NLA_U8. 3. modify the description of CQE in Document. V1 -> V2: refactor #1&#2 in V1 suggestted by Jakub Kicinski. Yufeng Mo (4): ethtool: add two coalesce attributes for CQE mode ethtool: extend coalesce setting uAPI with CQE mode net: hns3: add support for EQE/CQE mode configuration net: hns3: add ethtool support for CQE/EQE mode configuration Documentation/networking/ethtool-netlink.rst | 15 +++++++ drivers/infiniband/ulp/ipoib/ipoib_ethtool.c | 8 +++- drivers/net/ethernet/amazon/ena/ena_ethtool.c | 8 +++- drivers/net/ethernet/amd/xgbe/xgbe-ethtool.c | 8 +++- .../net/ethernet/aquantia/atlantic/aq_ethtool.c | 8 +++- drivers/net/ethernet/broadcom/bcmsysport.c | 8 +++- drivers/net/ethernet/broadcom/bnx2.c | 12 ++++-- .../net/ethernet/broadcom/bnx2x/bnx2x_ethtool.c | 8 +++- drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c | 8 +++- drivers/net/ethernet/broadcom/genet/bcmgenet.c | 8 +++- drivers/net/ethernet/broadcom/tg3.c | 10 ++++- drivers/net/ethernet/brocade/bna/bnad_ethtool.c | 12 ++++-- drivers/net/ethernet/cavium/liquidio/lio_ethtool.c | 8 +++- .../net/ethernet/cavium/thunder/nicvf_ethtool.c | 4 +- drivers/net/ethernet/chelsio/cxgb/cxgb2.c | 8 +++- drivers/net/ethernet/chelsio/cxgb3/cxgb3_main.c | 8 +++- drivers/net/ethernet/chelsio/cxgb4/cxgb4_ethtool.c | 8 +++- .../net/ethernet/chelsio/cxgb4vf/cxgb4vf_main.c | 8 +++- drivers/net/ethernet/cisco/enic/enic_ethtool.c | 8 +++- drivers/net/ethernet/cortina/gemini.c | 8 +++- drivers/net/ethernet/emulex/benet/be_ethtool.c | 8 +++- drivers/net/ethernet/freescale/dpaa/dpaa_ethtool.c | 8 +++- .../net/ethernet/freescale/enetc/enetc_ethtool.c | 8 +++- drivers/net/ethernet/freescale/fec_main.c | 14 ++++--- drivers/net/ethernet/freescale/gianfar_ethtool.c | 8 +++- drivers/net/ethernet/hisilicon/hip04_eth.c | 8 +++- drivers/net/ethernet/hisilicon/hns/hns_ethtool.c | 12 +++++- drivers/net/ethernet/hisilicon/hns3/hnae3.h | 1 + drivers/net/ethernet/hisilicon/hns3/hns3_enet.c | 49 +++++++++++++++++++++- drivers/net/ethernet/hisilicon/hns3/hns3_enet.h | 11 +++++ drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c | 26 ++++++++++-- .../ethernet/hisilicon/hns3/hns3pf/hclge_main.c | 1 + .../ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c | 1 + drivers/net/ethernet/huawei/hinic/hinic_ethtool.c | 8 +++- drivers/net/ethernet/intel/e1000/e1000_ethtool.c | 8 +++- drivers/net/ethernet/intel/e1000e/ethtool.c | 8 +++- drivers/net/ethernet/intel/fm10k/fm10k_ethtool.c | 8 +++- drivers/net/ethernet/intel/i40e/i40e_ethtool.c | 12 +++++- drivers/net/ethernet/intel/iavf/iavf_ethtool.c | 12 +++++- drivers/net/ethernet/intel/ice/ice_ethtool.c | 12 ++++-- drivers/net/ethernet/intel/igb/igb_ethtool.c | 8 +++- drivers/net/ethernet/intel/igbvf/ethtool.c | 8 +++- drivers/net/ethernet/intel/igc/igc_ethtool.c | 8 +++- drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c | 8 +++- drivers/net/ethernet/intel/ixgbevf/ethtool.c | 8 +++- drivers/net/ethernet/jme.c | 12 ++++-- drivers/net/ethernet/marvell/mv643xx_eth.c | 12 ++++-- drivers/net/ethernet/marvell/mvneta.c | 14 +++++-- drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c | 14 +++++-- .../ethernet/marvell/octeontx2/nic/otx2_ethtool.c | 8 +++- drivers/net/ethernet/marvell/skge.c | 8 +++- drivers/net/ethernet/marvell/sky2.c | 8 +++- drivers/net/ethernet/mellanox/mlx4/en_ethtool.c | 8 +++- .../net/ethernet/mellanox/mlx5/core/en_ethtool.c | 8 +++- drivers/net/ethernet/mellanox/mlx5/core/en_rep.c | 8 +++- .../ethernet/mellanox/mlx5/core/ipoib/ethtool.c | 8 +++- drivers/net/ethernet/myricom/myri10ge/myri10ge.c | 12 ++++-- .../net/ethernet/netronome/nfp/nfp_net_ethtool.c | 8 +++- drivers/net/ethernet/ni/nixge.c | 14 +++++-- .../net/ethernet/pensando/ionic/ionic_ethtool.c | 8 +++- .../ethernet/qlogic/netxen/netxen_nic_ethtool.c | 8 +++- drivers/net/ethernet/qlogic/qede/qede.h | 4 +- drivers/net/ethernet/qlogic/qede/qede_ethtool.c | 8 +++- .../net/ethernet/qlogic/qlcnic/qlcnic_ethtool.c | 8 +++- drivers/net/ethernet/realtek/r8169_main.c | 10 ++++- drivers/net/ethernet/samsung/sxgbe/sxgbe_ethtool.c | 8 +++- drivers/net/ethernet/sfc/ethtool.c | 8 +++- drivers/net/ethernet/sfc/falcon/ethtool.c | 8 +++- drivers/net/ethernet/socionext/netsec.c | 10 +++-- .../net/ethernet/stmicro/stmmac/stmmac_ethtool.c | 8 +++- drivers/net/ethernet/synopsys/dwc-xlgmac-ethtool.c | 14 +++++-- drivers/net/ethernet/tehuti/tehuti.c | 12 ++++-- drivers/net/ethernet/ti/cpsw.c | 2 +- drivers/net/ethernet/ti/cpsw_ethtool.c | 8 +++- drivers/net/ethernet/ti/cpsw_new.c | 2 +- drivers/net/ethernet/ti/cpsw_priv.h | 8 +++- drivers/net/ethernet/ti/davinci_emac.c | 14 +++++-- drivers/net/ethernet/via/via-velocity.c | 8 +++- drivers/net/ethernet/xilinx/ll_temac_main.c | 14 +++++-- drivers/net/ethernet/xilinx/xilinx_axienet_main.c | 18 ++++++-- drivers/net/netdevsim/ethtool.c | 8 +++- drivers/net/tun.c | 8 +++- drivers/net/usb/r8152.c | 8 +++- drivers/net/virtio_net.c | 8 +++- drivers/net/vmxnet3/vmxnet3_ethtool.c | 12 ++++-- drivers/net/wireless/ath/wil6210/ethtool.c | 14 +++++-- drivers/s390/net/qeth_ethtool.c | 4 +- drivers/staging/qlge/qlge_ethtool.c | 10 ++++- include/linux/ethtool.h | 22 ++++++++-- include/uapi/linux/ethtool_netlink.h | 2 + net/ethtool/coalesce.c | 29 ++++++++++--- net/ethtool/ioctl.c | 15 +++++-- net/ethtool/netlink.h | 2 +- 93 files changed, 699 insertions(+), 209 deletions(-) -- 2.8.1

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[PATCH V2 ethtool-next] netlink: settings: add netlink support for coalesce cqe mode parameter
by Yufeng Mo 13 Sep '21

13 Sep '21

Add support for "ethtool -C <dev> cqe-mode-rx/cqe-mode-tx on/off" for setting coalesce cqe mode. Signed-off-by: Yufeng Mo <moyufeng(a)huawei.com> --- ChangeLogs: V1 -> V2: 1. update the man page for new paremeters cqe-mode-rx/cqe-mode-tx. 2. add '\n' in coalesce_reply_cb() after showing new paremeters. --- ethtool.8.in | 2 ++ ethtool.c | 2 ++ netlink/coalesce.c | 16 ++++++++++++++++ 3 files changed, 20 insertions(+) diff --git a/ethtool.8.in b/ethtool.8.in index f83d6d1..c187c32 100644 --- a/ethtool.8.in +++ b/ethtool.8.in @@ -186,6 +186,8 @@ ethtool \- query or control network driver and hardware settings .BN tx\-usecs\-high .BN tx\-frames\-high .BN sample\-interval +.B2 cqe\-mode\-rx on off +.B2 cqe\-mode\-tx on off .HP .B ethtool \-g|\-\-show\-ring .I devname diff --git a/ethtool.c b/ethtool.c index 2486caa..a6826e9 100644 --- a/ethtool.c +++ b/ethtool.c @@ -5703,6 +5703,8 @@ static const struct option args[] = { " [tx-usecs-high N]\n" " [tx-frames-high N]\n" " [sample-interval N]\n" + " [cqe-mode-rx on|off]\n" + " [cqe-mode-tx on|off]\n" }, { .opts = "-g|--show-ring", diff --git a/netlink/coalesce.c b/netlink/coalesce.c index 75922a9..15037c2 100644 --- a/netlink/coalesce.c +++ b/netlink/coalesce.c @@ -66,6 +66,10 @@ int coalesce_reply_cb(const struct nlmsghdr *nlhdr, void *data) show_u32(tb[ETHTOOL_A_COALESCE_TX_USECS_HIGH], "tx-usecs-high: "); show_u32(tb[ETHTOOL_A_COALESCE_TX_MAX_FRAMES_HIGH], "tx-frame-high: "); putchar('\n'); + show_bool("rx", "CQE mode RX: %s ", + tb[ETHTOOL_A_COALESCE_USE_CQE_MODE_RX]); + show_bool("tx", "TX: %s\n", tb[ETHTOOL_A_COALESCE_USE_CQE_MODE_TX]); + putchar('\n'); return MNL_CB_OK; } @@ -226,6 +230,18 @@ static const struct param_parser scoalesce_params[] = { .handler = nl_parse_direct_u32, .min_argc = 1, }, + { + .arg = "cqe-mode-rx", + .type = ETHTOOL_A_COALESCE_USE_CQE_MODE_RX, + .handler = nl_parse_u8bool, + .min_argc = 1, + }, + { + .arg = "cqe-mode-tx", + .type = ETHTOOL_A_COALESCE_USE_CQE_MODE_TX, + .handler = nl_parse_u8bool, + .min_argc = 1, + }, {} }; -- 2.8.1

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I just want to inform you
by Godwin Pete 08 Sep '21

08 Sep '21

Hi, I just want to use this little opportunity to inform you about my success towards the transfer. I'm currently out of the country for an investment with part of my share, after completing the transfer with an Indian business man. But i will visit your country, next year. After the completion of my project. Please, contact my secretary to send you the (ATM) card which I've already credited with the sum of ($500,000.00). Just contact her to help you in receiving the (ATM) card. I've explained everything to her before my trip. This is what I can do for you because, you couldn't help in the transfer, but for the fact that you're the person whom I've contacted initially, for the transfer. I decided to give this ($500,000.00) as a compensation for being contacted initially for the transfer. I always try to make the difference, in dealing with people any time I come in contact with them. I'm also trying to show that I'm quite a different person from others whose may have a different purpose within them. I believe that you will render some help to me when I, will visit your country, for another investment there. So contact my secretary for the card, Her contact are as follows, Full name: Mrs, Jovita Dumuije, Country: Burkina Faso Email: jovitadumuije(a)gmail.com Thanks, and hope for a good corporation with you in future. Godwin Peter,

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[PATCH net] net: hns3: add option to turn off page pool feature
by Yunsheng Lin 06 Sep '21

06 Sep '21

When page pool is added to the hns3 driver, it is always enabled unconditionally, which means spilt page handling in the hns3 driver is dead code. As there is a requirement to test the performance between spilt page handling in driver and page pool, so add a module param to support disabling the page pool. When the page pool is proved to be perform better in most case, the spilt page handling in driver can be removed. Fixes: 93188e9642c3 ("net: hns3: support skb's frag page recycling based on page pool") Signed-off-by: Yunsheng Lin <linyunsheng(a)huawei.com> --- drivers/net/ethernet/hisilicon/hns3/hns3_enet.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c index 22af3d6ce178..293243bbe407 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c @@ -61,6 +61,9 @@ static unsigned int tx_sgl = 1; module_param(tx_sgl, uint, 0600); MODULE_PARM_DESC(tx_sgl, "Minimum number of frags when using dma_map_sg() to optimize the IOMMU mapping"); +static bool page_pool_enabled = true; +module_param(page_pool_enabled, bool, 0400); + #define HNS3_SGL_SIZE(nfrag) (sizeof(struct scatterlist) * (nfrag) + \ sizeof(struct sg_table)) #define HNS3_MAX_SGL_SIZE ALIGN(HNS3_SGL_SIZE(HNS3_MAX_TSO_BD_NUM), \ @@ -4753,7 +4756,8 @@ static int hns3_alloc_ring_memory(struct hns3_enet_ring *ring) goto out_with_desc_cb; if (!HNAE3_IS_TX_RING(ring)) { - hns3_alloc_page_pool(ring); + if (page_pool_enabled) + hns3_alloc_page_pool(ring); ret = hns3_alloc_ring_buffers(ring); if (ret) -- 2.33.0

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[PATCH net-next] tcp: add tcp_tx_skb_cache_key checking in sk_stream_alloc_skb()
by Yunsheng Lin 02 Sep '21

02 Sep '21

Since tcp_tx_skb_cache is disabled by default in: commit 0b7d7f6b2208 ("tcp: add tcp_tx_skb_cache sysctl") Add tcp_tx_skb_cache_key checking in sk_stream_alloc_skb() to avoid possible branch-misses. Signed-off-by: Yunsheng Lin <linyunsheng(a)huawei.com> --- Also, the sk->sk_tx_skb_cache may be both changed by allocation and freeing side, I assume there may be some implicit protection here too, such as the NAPI protection for rx? --- net/ipv4/tcp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c index e8b48df..226ddef 100644 --- a/net/ipv4/tcp.c +++ b/net/ipv4/tcp.c @@ -866,7 +866,7 @@ struct sk_buff *sk_stream_alloc_skb(struct sock *sk, int size, gfp_t gfp, { struct sk_buff *skb; - if (likely(!size)) { + if (static_branch_unlikely(&tcp_tx_skb_cache_key) && likely(!size)) { skb = sk->sk_tx_skb_cache; if (skb) { skb->truesize = SKB_TRUESIZE(skb_end_offset(skb)); -- 2.7.4

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[PATCH net-next 0/2] some optimization for page pool
by Yunsheng Lin 01 Sep '21

01 Sep '21

Patch 1: support non-split page when PP_FLAG_PAGE_FRAG is set. Patch 1: keep track of pp page when __skb_frag_ref() is called. Yunshene Lin (2): page_pool: support non-split page with PP_FLAG_PAGE_FRAG skbuff: keep track of pp page when __skb_frag_ref() is called include/linux/skbuff.h | 13 ++++++++++++- include/net/page_pool.h | 23 +++++++++++++++++++++++ net/core/page_pool.c | 24 +++++++++--------------- 3 files changed, 44 insertions(+), 16 deletions(-) -- 2.7.4

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