On Wed, Mar 12, 2025 at 02:01:09AM -0700, Selvin Xavier wrote:
> From: Preethi G <preethi.gurusiddalingeswaraswamy@xxxxxxxxxxxx>
>
> Add support for process_mad hook to retrieve the perf management counters.
> Supports IB_PMA_PORT_COUNTERS and IB_PMA_PORT_COUNTERS_EXT counters.
> Query the data from HW contexts and FW commands.
>
> Signed-off-by: Preethi G <preethi.gurusiddalingeswaraswamy@xxxxxxxxxxxx>
> Signed-off-by: Selvin Xavier <selvin.xavier@xxxxxxxxxxxx>
> ---
> v1->v2:
> Fix the warning reported by kernel test robot by returning rc
> drivers/infiniband/hw/bnxt_re/bnxt_re.h | 4 ++
> drivers/infiniband/hw/bnxt_re/hw_counters.c | 88 +++++++++++++++++++++++++++++
> drivers/infiniband/hw/bnxt_re/ib_verbs.c | 36 ++++++++++++
> drivers/infiniband/hw/bnxt_re/ib_verbs.h | 6 ++
> drivers/infiniband/hw/bnxt_re/main.c | 1 +
> 5 files changed, 135 insertions(+)
>
> diff --git a/drivers/infiniband/hw/bnxt_re/bnxt_re.h b/drivers/infiniband/hw/bnxt_re/bnxt_re.h
> index b33b04e..8bc0237 100644
> --- a/drivers/infiniband/hw/bnxt_re/bnxt_re.h
> +++ b/drivers/infiniband/hw/bnxt_re/bnxt_re.h
> @@ -246,6 +246,10 @@ struct bnxt_re_dev {
> #define BNXT_RE_CHECK_RC(x) ((x) && ((x) != -ETIMEDOUT))
> void bnxt_re_pacing_alert(struct bnxt_re_dev *rdev);
>
> +int bnxt_re_assign_pma_port_counters(struct bnxt_re_dev *rdev, struct ib_mad *out_mad);
> +int bnxt_re_assign_pma_port_ext_counters(struct bnxt_re_dev *rdev,
> + struct ib_mad *out_mad);
> +
> static inline struct device *rdev_to_dev(struct bnxt_re_dev *rdev)
> {
> if (rdev)
> diff --git a/drivers/infiniband/hw/bnxt_re/hw_counters.c b/drivers/infiniband/hw/bnxt_re/hw_counters.c
> index 3ac47f4..d90f2cb 100644
> --- a/drivers/infiniband/hw/bnxt_re/hw_counters.c
> +++ b/drivers/infiniband/hw/bnxt_re/hw_counters.c
> @@ -39,6 +39,8 @@
>
> #include <linux/types.h>
> #include <linux/pci.h>
> +#include <rdma/ib_mad.h>
> +#include <rdma/ib_pma.h>
>
> #include "roce_hsi.h"
> #include "qplib_res.h"
> @@ -285,6 +287,92 @@ static void bnxt_re_copy_db_pacing_stats(struct bnxt_re_dev *rdev,
> readl(rdev->en_dev->bar0 + rdev->pacing.dbr_db_fifo_reg_off);
> }
>
> +int bnxt_re_assign_pma_port_ext_counters(struct bnxt_re_dev *rdev, struct ib_mad *out_mad)
> +{
> + struct ib_pma_portcounters_ext *pma_cnt_ext;
> + struct bnxt_qplib_ext_stat *estat = &rdev->stats.rstat.ext_stat;
> + struct ctx_hw_stats *hw_stats = NULL;
> + int rc = 0;
> +
> + hw_stats = rdev->qplib_ctx.stats.dma;
> +
> + pma_cnt_ext = (void *)(out_mad->data + 40);
> + if (_is_ext_stats_supported(rdev->dev_attr->dev_cap_flags)) {
> + u32 fid = PCI_FUNC(rdev->en_dev->pdev->devfn);
> +
> + rc = bnxt_qplib_qext_stat(&rdev->rcfw, fid, estat);
And why don't you stop after getting an "rc != 0" here?
Thanks
> + }
> +
> + pma_cnt_ext = (void *)(out_mad->data + 40);
> + if ((bnxt_qplib_is_chip_gen_p5(rdev->chip_ctx) && rdev->is_virtfn) ||
> + !bnxt_qplib_is_chip_gen_p5(rdev->chip_ctx)) {
> + pma_cnt_ext->port_xmit_data =
> + cpu_to_be64(le64_to_cpu(hw_stats->tx_ucast_bytes) / 4);
> + pma_cnt_ext->port_rcv_data =
> + cpu_to_be64(le64_to_cpu(hw_stats->rx_ucast_bytes) / 4);
> + pma_cnt_ext->port_xmit_packets =
> + cpu_to_be64(le64_to_cpu(hw_stats->tx_ucast_pkts));
> + pma_cnt_ext->port_rcv_packets =
> + cpu_to_be64(le64_to_cpu(hw_stats->rx_ucast_pkts));
> + pma_cnt_ext->port_unicast_rcv_packets =
> + cpu_to_be64(le64_to_cpu(hw_stats->rx_ucast_pkts));
> + pma_cnt_ext->port_unicast_xmit_packets =
> + cpu_to_be64(le64_to_cpu(hw_stats->tx_ucast_pkts));
> +
> + } else {
> + pma_cnt_ext->port_rcv_packets = cpu_to_be64(estat->rx_roce_good_pkts);
> + pma_cnt_ext->port_rcv_data = cpu_to_be64(estat->rx_roce_good_bytes / 4);
> + pma_cnt_ext->port_xmit_packets = cpu_to_be64(estat->tx_roce_pkts);
> + pma_cnt_ext->port_xmit_data = cpu_to_be64(estat->tx_roce_bytes / 4);
> + pma_cnt_ext->port_unicast_rcv_packets = cpu_to_be64(estat->rx_roce_good_pkts);
> + pma_cnt_ext->port_unicast_xmit_packets = cpu_to_be64(estat->tx_roce_pkts);
> + }
> + return rc;
> +}
> +
> +int bnxt_re_assign_pma_port_counters(struct bnxt_re_dev *rdev, struct ib_mad *out_mad)
> +{
> + struct bnxt_qplib_ext_stat *estat = &rdev->stats.rstat.ext_stat;
> + struct ib_pma_portcounters *pma_cnt;
> + struct ctx_hw_stats *hw_stats = NULL;
> + int rc = 0;
> +
> + hw_stats = rdev->qplib_ctx.stats.dma;
> +
> + pma_cnt = (void *)(out_mad->data + 40);
> + if (_is_ext_stats_supported(rdev->dev_attr->dev_cap_flags)) {
> + u32 fid = PCI_FUNC(rdev->en_dev->pdev->devfn);
> +
> + rc = bnxt_qplib_qext_stat(&rdev->rcfw, fid, estat);
> + }
> + if ((bnxt_qplib_is_chip_gen_p5(rdev->chip_ctx) && rdev->is_virtfn) ||
> + !bnxt_qplib_is_chip_gen_p5(rdev->chip_ctx)) {
> + pma_cnt->port_rcv_packets =
> + cpu_to_be32((u32)(le64_to_cpu(hw_stats->rx_ucast_pkts)) & 0xFFFFFFFF);
> + pma_cnt->port_rcv_data =
> + cpu_to_be32((u32)((le64_to_cpu(hw_stats->rx_ucast_bytes) &
> + 0xFFFFFFFF) / 4));
> + pma_cnt->port_xmit_packets =
> + cpu_to_be32((u32)(le64_to_cpu(hw_stats->tx_ucast_pkts)) & 0xFFFFFFFF);
> + pma_cnt->port_xmit_data =
> + cpu_to_be32((u32)((le64_to_cpu(hw_stats->tx_ucast_bytes)
> + & 0xFFFFFFFF) / 4));
> + } else {
> + pma_cnt->port_rcv_packets = cpu_to_be32(estat->rx_roce_good_pkts);
> + pma_cnt->port_rcv_data = cpu_to_be32((estat->rx_roce_good_bytes / 4));
> + pma_cnt->port_xmit_packets = cpu_to_be32(estat->tx_roce_pkts);
> + pma_cnt->port_xmit_data = cpu_to_be32((estat->tx_roce_bytes / 4));
> + }
> + pma_cnt->port_rcv_constraint_errors = (u8)(le64_to_cpu(hw_stats->rx_discard_pkts) & 0xFF);
> + pma_cnt->port_rcv_errors = cpu_to_be16((u16)(le64_to_cpu(hw_stats->rx_error_pkts)
> + & 0xFFFF));
> + pma_cnt->port_xmit_constraint_errors = (u8)(le64_to_cpu(hw_stats->tx_error_pkts) & 0xFF);
> + pma_cnt->port_xmit_discards = cpu_to_be16((u16)(le64_to_cpu(hw_stats->tx_discard_pkts)
> + & 0xFFFF));
> +
> + return rc;
> +}
> +
> int bnxt_re_ib_get_hw_stats(struct ib_device *ibdev,
> struct rdma_hw_stats *stats,
> u32 port, int index)
> diff --git a/drivers/infiniband/hw/bnxt_re/ib_verbs.c b/drivers/infiniband/hw/bnxt_re/ib_verbs.c
> index 2de101d..dc31973 100644
> --- a/drivers/infiniband/hw/bnxt_re/ib_verbs.c
> +++ b/drivers/infiniband/hw/bnxt_re/ib_verbs.c
> @@ -49,6 +49,7 @@
> #include <rdma/ib_addr.h>
> #include <rdma/ib_mad.h>
> #include <rdma/ib_cache.h>
> +#include <rdma/ib_pma.h>
> #include <rdma/uverbs_ioctl.h>
> #include <linux/hashtable.h>
>
> @@ -4489,6 +4490,41 @@ void bnxt_re_mmap_free(struct rdma_user_mmap_entry *rdma_entry)
> kfree(bnxt_entry);
> }
>
> +int bnxt_re_process_mad(struct ib_device *ibdev, int mad_flags,
> + u32 port_num, const struct ib_wc *in_wc,
> + const struct ib_grh *in_grh,
> + const struct ib_mad *in_mad, struct ib_mad *out_mad,
> + size_t *out_mad_size, u16 *out_mad_pkey_index)
> +{
> + struct bnxt_re_dev *rdev = to_bnxt_re_dev(ibdev, ibdev);
> + struct ib_class_port_info cpi = {};
> + int ret = IB_MAD_RESULT_SUCCESS;
> + int rc = 0;
> +
> + if (in_mad->mad_hdr.mgmt_class != IB_MGMT_CLASS_PERF_MGMT)
> + return ret;
> +
> + switch (in_mad->mad_hdr.attr_id) {
> + case IB_PMA_CLASS_PORT_INFO:
> + cpi.capability_mask = IB_PMA_CLASS_CAP_EXT_WIDTH;
> + memcpy((out_mad->data + 40), &cpi, sizeof(cpi));
> + break;
> + case IB_PMA_PORT_COUNTERS_EXT:
> + rc = bnxt_re_assign_pma_port_ext_counters(rdev, out_mad);
> + break;
> + case IB_PMA_PORT_COUNTERS:
> + rc = bnxt_re_assign_pma_port_counters(rdev, out_mad);
> + break;
> + default:
> + rc = -EINVAL;
> + break;
> + }
> + if (rc)
> + return IB_MAD_RESULT_FAILURE;
> + ret |= IB_MAD_RESULT_REPLY;
> + return ret;
> +}
> +
> static int UVERBS_HANDLER(BNXT_RE_METHOD_NOTIFY_DRV)(struct uverbs_attr_bundle *attrs)
> {
> struct bnxt_re_ucontext *uctx;
> diff --git a/drivers/infiniband/hw/bnxt_re/ib_verbs.h b/drivers/infiniband/hw/bnxt_re/ib_verbs.h
> index fbb16a4..22c9eb8 100644
> --- a/drivers/infiniband/hw/bnxt_re/ib_verbs.h
> +++ b/drivers/infiniband/hw/bnxt_re/ib_verbs.h
> @@ -268,6 +268,12 @@ void bnxt_re_dealloc_ucontext(struct ib_ucontext *context);
> int bnxt_re_mmap(struct ib_ucontext *context, struct vm_area_struct *vma);
> void bnxt_re_mmap_free(struct rdma_user_mmap_entry *rdma_entry);
>
> +int bnxt_re_process_mad(struct ib_device *device, int process_mad_flags,
> + u32 port_num, const struct ib_wc *in_wc,
> + const struct ib_grh *in_grh,
> + const struct ib_mad *in_mad, struct ib_mad *out_mad,
> + size_t *out_mad_size, u16 *out_mad_pkey_index);
> +
> static inline u32 __to_ib_port_num(u16 port_id)
> {
> return (u32)port_id + 1;
> diff --git a/drivers/infiniband/hw/bnxt_re/main.c b/drivers/infiniband/hw/bnxt_re/main.c
> index e9e4da4..59ddb36 100644
> --- a/drivers/infiniband/hw/bnxt_re/main.c
> +++ b/drivers/infiniband/hw/bnxt_re/main.c
> @@ -1276,6 +1276,7 @@ static const struct ib_device_ops bnxt_re_dev_ops = {
> .post_recv = bnxt_re_post_recv,
> .post_send = bnxt_re_post_send,
> .post_srq_recv = bnxt_re_post_srq_recv,
> + .process_mad = bnxt_re_process_mad,
> .query_ah = bnxt_re_query_ah,
> .query_device = bnxt_re_query_device,
> .modify_device = bnxt_re_modify_device,
> --
> 2.5.5
>
