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RDMA/efa: Implement the query port speed verb

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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 <mrgolin@amazon.com>
Reviewed-by: Yonatan Nachum <ynachum@amazon.com>
Signed-off-by: Tom Sela <tomsela@amazon.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
This commit is contained in:
Tom Sela 2026-06-08 08:39:27 +00:00 committed by Jason Gunthorpe
parent 7d4f515b66
commit 20ff935086
4 changed files with 16 additions and 3 deletions
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1
drivers/infiniband/hw/efa/efa.h
View File

@ -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);

4
drivers/infiniband/hw/efa/efa_com_cmd.c
View File

@ -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(

1
drivers/infiniband/hw/efa/efa_main.c
View File

@ -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,

13
drivers/infiniband/hw/efa/efa_verbs.c
View File

@ -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)