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OFED: Add generic function to extract IB speed from netdev

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Reviewed by:	kib
Obtained from:	Linux commit d41861942fc55c14b6280d9568a0d0112037f065
Sponsored by:	Chelsio Communications
Differential Revision:	https://reviews.freebsd.org/D57952
This commit is contained in:
John Baldwin committed 2026-07-29 14:42:19 -04:00
1 parent ee7258cfbb
commit ea44c37d0b
4 files changed
+50 -103
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sys/dev/irdma/fbsd_kcompat.h
-1
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@@ -147,7 +147,6 @@ void irdma_destroy_ah(struct ib_ah *ibah, u32 flags);
void irdma_destroy_ah_stub(struct ib_ah *ibah, u32 flags);
int irdma_destroy_qp(struct ib_qp *ibqp, struct ib_udata *udata);
int irdma_dereg_mr(struct ib_mr *ib_mr, struct ib_udata *udata);
int ib_get_eth_speed(struct ib_device *dev, u32 port_num, u16 *speed, u8 *width);
enum rdma_link_layer irdma_get_link_layer(struct ib_device *ibdev,
u8 port_num);
int irdma_roce_port_immutable(struct ib_device *ibdev, u8 port_num,
sys/dev/irdma/irdma_kcompat.c
-102
View File
@@ -1768,108 +1768,6 @@ kc_set_rdma_uverbs_cmd_mask(struct irdma_device *iwdev)
iwdev->ibdev.uverbs_ex_cmd_mask |= BIT_ULL(IB_USER_VERBS_EX_CMD_CREATE_CQ);
}
static void
ib_get_width_and_speed(u32 netdev_speed, u32 lanes,
u16 *speed, u8 *width)
{
if (!lanes) {
if (netdev_speed <= SPEED_1000) {
*width = IB_WIDTH_1X;
*speed = IB_SPEED_SDR;
} else if (netdev_speed <= SPEED_10000) {
*width = IB_WIDTH_1X;
*speed = IB_SPEED_FDR10;
} else if (netdev_speed <= SPEED_20000) {
*width = IB_WIDTH_4X;
*speed = IB_SPEED_DDR;
} else if (netdev_speed <= SPEED_25000) {
*width = IB_WIDTH_1X;
*speed = IB_SPEED_EDR;
} else if (netdev_speed <= SPEED_40000) {
*width = IB_WIDTH_4X;
*speed = IB_SPEED_FDR10;
} else if (netdev_speed <= SPEED_50000) {
*width = IB_WIDTH_2X;
*speed = IB_SPEED_EDR;
} else if (netdev_speed <= SPEED_100000) {
*width = IB_WIDTH_4X;
*speed = IB_SPEED_EDR;
} else if (netdev_speed <= SPEED_200000) {
*width = IB_WIDTH_4X;
*speed = IB_SPEED_HDR;
} else {
*width = IB_WIDTH_4X;
*speed = IB_SPEED_NDR;
}
return;
}
switch (lanes) {
case 1:
*width = IB_WIDTH_1X;
break;
case 2:
*width = IB_WIDTH_2X;
break;
case 4:
*width = IB_WIDTH_4X;
break;
case 8:
*width = IB_WIDTH_8X;
break;
case 12:
*width = IB_WIDTH_12X;
break;
default:
*width = IB_WIDTH_1X;
}
switch (netdev_speed / lanes) {
case SPEED_2500:
*speed = IB_SPEED_SDR;
break;
case SPEED_5000:
*speed = IB_SPEED_DDR;
break;
case SPEED_10000:
*speed = IB_SPEED_FDR10;
break;
case SPEED_14000:
*speed = IB_SPEED_FDR;
break;
case SPEED_25000:
*speed = IB_SPEED_EDR;
break;
case SPEED_50000:
*speed = IB_SPEED_HDR;
break;
case SPEED_100000:
*speed = IB_SPEED_NDR;
break;
default:
*speed = IB_SPEED_SDR;
}
}
int
ib_get_eth_speed(struct ib_device *ibdev, u32 port_num, u16 *speed, u8 *width)
{
if_t netdev = ibdev->get_netdev(ibdev, port_num);
u32 netdev_speed, lanes;
if (!netdev)
return -ENODEV;
netdev_speed = (u32)if_getbaudrate(netdev);
dev_put(netdev);
lanes = 0;
ib_get_width_and_speed(netdev_speed, lanes, speed, width);
return 0;
}
u64
irdma_mac_to_u64(const u8 *eth_add)
{
sys/ofed/drivers/infiniband/core/ib_verbs.c
+48
View File
@@ -1698,6 +1698,54 @@ int ib_modify_qp_with_udata(struct ib_qp *ib_qp, struct ib_qp_attr *attr,
}
EXPORT_SYMBOL(ib_modify_qp_with_udata);
int ib_get_eth_speed(struct ib_device *dev, u8 port_num, u16 *speed, u8 *width)
{
uint64_t netdev_speed;
if_t netdev;
if (rdma_port_get_link_layer(dev, port_num) != IB_LINK_LAYER_ETHERNET)
return -EINVAL;
if (!dev->get_netdev)
return -EOPNOTSUPP;
netdev = dev->get_netdev(dev, port_num);
if (!netdev)
return -ENODEV;
netdev_speed = if_getbaudrate(netdev);
dev_put(netdev);
if (netdev_speed == 0) {
netdev_speed = IF_Mbps(1000);
if_printf(netdev, "speed is unknown, defaulting to 1Gbps\n");
}
if (netdev_speed <= IF_Mbps(1000)) {
*width = IB_WIDTH_1X;
*speed = IB_SPEED_SDR;
} else if (netdev_speed <= IF_Mbps(10000)) {
*width = IB_WIDTH_1X;
*speed = IB_SPEED_FDR10;
} else if (netdev_speed <= IF_Mbps(20000)) {
*width = IB_WIDTH_4X;
*speed = IB_SPEED_DDR;
} else if (netdev_speed <= IF_Mbps(25000)) {
*width = IB_WIDTH_1X;
*speed = IB_SPEED_EDR;
} else if (netdev_speed <= IF_Mbps(40000)) {
*width = IB_WIDTH_4X;
*speed = IB_SPEED_FDR10;
} else {
*width = IB_WIDTH_4X;
*speed = IB_SPEED_EDR;
}
return 0;
}
EXPORT_SYMBOL(ib_get_eth_speed);
int ib_modify_qp(struct ib_qp *qp,
struct ib_qp_attr *qp_attr,
int qp_attr_mask)
sys/ofed/include/rdma/ib_verbs.h
+2
View File
@@ -3972,6 +3972,8 @@ struct ib_ucontext *ib_uverbs_get_ucontext_file(struct ib_uverbs_file *ufile);
int uverbs_destroy_def_handler(struct uverbs_attr_bundle *attrs);
int ib_get_eth_speed(struct ib_device *dev, u8 port_num, u16 *speed, u8 *width);
static inline u8 *rdma_ah_retrieve_dmac(struct rdma_ah_attr *attr)
{
if (attr->type == RDMA_AH_ATTR_TYPE_ROCE)