From: Tom Sela Date: Mon, 8 Jun 2026 08:39:27 +0000 (+0000) Subject: RDMA/efa: Implement the query port speed verb X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=20ff9350862468af21b46cae2c22d17d6ec637f9;p=thirdparty%2Flinux.git RDMA/efa: Implement the query port speed verb Implement the query port speed callback to report the port effective bandwidth directly in 100 Mb/s granularity. Link: https://patch.msgid.link/r/20260608083927.4116-1-tomsela@amazon.com Reviewed-by: Michael Margolin Reviewed-by: Yonatan Nachum Signed-off-by: Tom Sela Signed-off-by: Jason Gunthorpe --- diff --git a/drivers/infiniband/hw/efa/efa.h b/drivers/infiniband/hw/efa/efa.h index 00b19f2ba3da3..f4586bb170c19 100644 --- a/drivers/infiniband/hw/efa/efa.h +++ b/drivers/infiniband/hw/efa/efa.h @@ -148,6 +148,7 @@ int efa_query_device(struct ib_device *ibdev, struct ib_udata *udata); int efa_query_port(struct ib_device *ibdev, u32 port, struct ib_port_attr *props); +int efa_query_port_speed(struct ib_device *ibdev, u32 port_num, u64 *speed); int efa_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr, int qp_attr_mask, struct ib_qp_init_attr *qp_init_attr); diff --git a/drivers/infiniband/hw/efa/efa_com_cmd.c b/drivers/infiniband/hw/efa/efa_com_cmd.c index 63c7f07806a82..5db4f5805b599 100644 --- a/drivers/infiniband/hw/efa/efa_com_cmd.c +++ b/drivers/infiniband/hw/efa/efa_com_cmd.c @@ -6,6 +6,8 @@ #include "efa_com.h" #include "efa_com_cmd.h" +#define EFA_DEFAULT_LINK_SPEED_GBPS 100 + int efa_com_create_qp(struct efa_com_dev *edev, struct efa_com_create_qp_params *params, struct efa_com_create_qp_result *res) @@ -468,6 +470,8 @@ int efa_com_get_device_attr(struct efa_com_dev *edev, result->device_caps = resp.u.device_attr.device_caps; result->guid = resp.u.device_attr.guid; result->max_link_speed_gbps = resp.u.device_attr.max_link_speed_gbps; + if (!result->max_link_speed_gbps) + result->max_link_speed_gbps = EFA_DEFAULT_LINK_SPEED_GBPS; if (result->admin_api_version < 1) { ibdev_err_ratelimited( diff --git a/drivers/infiniband/hw/efa/efa_main.c b/drivers/infiniband/hw/efa/efa_main.c index 03c237c8c81ee..97da8e828e340 100644 --- a/drivers/infiniband/hw/efa/efa_main.c +++ b/drivers/infiniband/hw/efa/efa_main.c @@ -390,6 +390,7 @@ static const struct ib_device_ops efa_dev_ops = { .query_gid = efa_query_gid, .query_pkey = efa_query_pkey, .query_port = efa_query_port, + .query_port_speed = efa_query_port_speed, .query_qp = efa_query_qp, .reg_user_mr = efa_reg_mr, .reg_user_mr_dmabuf = efa_reg_user_mr_dmabuf, diff --git a/drivers/infiniband/hw/efa/efa_verbs.c b/drivers/infiniband/hw/efa/efa_verbs.c index 5cd34746e6a6e..5bb00cb857751 100644 --- a/drivers/infiniband/hw/efa/efa_verbs.c +++ b/drivers/infiniband/hw/efa/efa_verbs.c @@ -90,8 +90,6 @@ static const struct rdma_stat_desc efa_port_stats_descs[] = { EFA_DEFINE_PORT_STATS(EFA_STATS_STR) }; -#define EFA_DEFAULT_LINK_SPEED_GBPS 100 - #define EFA_CHUNK_PAYLOAD_SHIFT 12 #define EFA_CHUNK_PAYLOAD_SIZE BIT(EFA_CHUNK_PAYLOAD_SHIFT) #define EFA_CHUNK_PAYLOAD_PTR_SIZE 8 @@ -332,7 +330,7 @@ int efa_query_port(struct ib_device *ibdev, u32 port, props->phys_state = IB_PORT_PHYS_STATE_LINK_UP; props->gid_tbl_len = 1; props->pkey_tbl_len = 1; - link_gbps = dev->dev_attr.max_link_speed_gbps ?: EFA_DEFAULT_LINK_SPEED_GBPS; + link_gbps = dev->dev_attr.max_link_speed_gbps; efa_link_gbps_to_speed_and_width(link_gbps, &link_speed, &link_width); props->active_speed = link_speed; props->active_width = link_width; @@ -344,6 +342,15 @@ int efa_query_port(struct ib_device *ibdev, u32 port, return 0; } +int efa_query_port_speed(struct ib_device *ibdev, u32 port_num, u64 *speed) +{ + struct efa_dev *dev = to_edev(ibdev); + + *speed = dev->dev_attr.max_link_speed_gbps * 10; + + return 0; +} + int efa_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr, int qp_attr_mask, struct ib_qp_init_attr *qp_init_attr)