Logic of retrieving netdev speed from net_device and translating it to
IB speed is implemented in rxe, in usnic and in bnxt drivers.
Define new function which merges all.
Signed-off-by: Yuval Shaia <yuval.shaia@xxxxxxxxxx>
---
v0 -> v1:
* Invite usnic to the party.
v1 -> v2:
* Utilize __ethtool_get_link_ksettings
* Rename to ib_get_eth_speed
* Add some validation checks
* Implement get_netdev in usnic
v2 -> v3:
* Split to two separate patches
---
drivers/infiniband/core/verbs.c | 55 ++++++++++++++++++++++++++++
drivers/infiniband/hw/bnxt_re/ib_verbs.c | 49 ++-----------------------
drivers/infiniband/hw/usnic/usnic_ib_verbs.c | 31 +++-------------
drivers/infiniband/sw/rxe/rxe_verbs.c | 53 +++------------------------
include/rdma/ib_verbs.h | 1 +
5 files changed, 71 insertions(+), 118 deletions(-)
diff --git a/drivers/infiniband/core/verbs.c b/drivers/infiniband/core/verbs.c
index 4792f52..19e6b78 100644
--- a/drivers/infiniband/core/verbs.c
+++ b/drivers/infiniband/core/verbs.c
@@ -1253,6 +1253,61 @@ int ib_resolve_eth_dmac(struct ib_device *device,
}
EXPORT_SYMBOL(ib_resolve_eth_dmac);
+int ib_get_eth_speed(struct ib_device *dev, u8 port_num, u8 *speed, u8 *width)
+{
+ int rc;
+ u32 netdev_speed;
+ struct net_device *netdev;
+ struct ethtool_link_ksettings lksettings;
+
+ if (rdma_port_get_link_layer(dev, port_num) != IB_LINK_LAYER_ETHERNET)
+ return -EINVAL;
+
+ if (!dev->get_netdev)
+ return -EINVAL;
+
+ netdev = dev->get_netdev(dev, port_num);
+ if (!netdev)
+ return -EINVAL;
+
+ rtnl_lock();
+ rc = __ethtool_get_link_ksettings(netdev, &lksettings);
+ rtnl_unlock();
+
+ dev_put(netdev);
+
+ if (!rc) {
+ netdev_speed = lksettings.base.speed;
+ } else {
+ netdev_speed = SPEED_1000;
+ pr_warn("%s speed is unknown, defaulting to %d\n", netdev->name,
+ netdev_speed);
+ }
+
+ 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 {
+ *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)
diff --git a/drivers/infiniband/hw/bnxt_re/ib_verbs.c b/drivers/infiniband/hw/bnxt_re/ib_verbs.c
index 7ba9e69..d0e0f90 100644
--- a/drivers/infiniband/hw/bnxt_re/ib_verbs.c
+++ b/drivers/infiniband/hw/bnxt_re/ib_verbs.c
@@ -181,50 +181,6 @@ int bnxt_re_modify_device(struct ib_device *ibdev,
return 0;
}
-static void __to_ib_speed_width(struct net_device *netdev, u8 *speed, u8 *width)
-{
- struct ethtool_link_ksettings lksettings;
- u32 espeed;
-
- if (netdev->ethtool_ops && netdev->ethtool_ops->get_link_ksettings) {
- memset(&lksettings, 0, sizeof(lksettings));
- rtnl_lock();
- netdev->ethtool_ops->get_link_ksettings(netdev, &lksettings);
- rtnl_unlock();
- espeed = lksettings.base.speed;
- } else {
- espeed = SPEED_UNKNOWN;
- }
- switch (espeed) {
- case SPEED_1000:
- *speed = IB_SPEED_SDR;
- *width = IB_WIDTH_1X;
- break;
- case SPEED_10000:
- *speed = IB_SPEED_QDR;
- *width = IB_WIDTH_1X;
- break;
- case SPEED_20000:
- *speed = IB_SPEED_DDR;
- *width = IB_WIDTH_4X;
- break;
- case SPEED_25000:
- *speed = IB_SPEED_EDR;
- *width = IB_WIDTH_1X;
- break;
- case SPEED_40000:
- *speed = IB_SPEED_QDR;
- *width = IB_WIDTH_4X;
- break;
- case SPEED_50000:
- break;
- default:
- *speed = IB_SPEED_SDR;
- *width = IB_WIDTH_1X;
- break;
- }
-}
-
/* Port */
int bnxt_re_query_port(struct ib_device *ibdev, u8 port_num,
struct ib_port_attr *port_attr)
@@ -266,8 +222,9 @@ int bnxt_re_query_port(struct ib_device *ibdev, u8 port_num,
* IB stack to avoid race in the NETDEV_UNREG path
*/
if (test_bit(BNXT_RE_FLAG_IBDEV_REGISTERED, &rdev->flags))
- __to_ib_speed_width(rdev->netdev, &port_attr->active_speed,
- &port_attr->active_width);
+ if (!ib_get_eth_speed(ibdev, port_num, &port_attr->active_speed,
+ &port_attr->active_width))
+ return -EINVAL;
return 0;
}
diff --git a/drivers/infiniband/hw/usnic/usnic_ib_verbs.c b/drivers/infiniband/hw/usnic/usnic_ib_verbs.c
index f9dc1e80..e5f57dd 100644
--- a/drivers/infiniband/hw/usnic/usnic_ib_verbs.c
+++ b/drivers/infiniband/hw/usnic/usnic_ib_verbs.c
@@ -226,27 +226,6 @@ static void qp_grp_destroy(struct usnic_ib_qp_grp *qp_grp)
spin_unlock(&vf->lock);
}
-static void eth_speed_to_ib_speed(int speed, u8 *active_speed,
- u8 *active_width)
-{
- if (speed <= 10000) {
- *active_width = IB_WIDTH_1X;
- *active_speed = IB_SPEED_FDR10;
- } else if (speed <= 20000) {
- *active_width = IB_WIDTH_4X;
- *active_speed = IB_SPEED_DDR;
- } else if (speed <= 30000) {
- *active_width = IB_WIDTH_4X;
- *active_speed = IB_SPEED_QDR;
- } else if (speed <= 40000) {
- *active_width = IB_WIDTH_4X;
- *active_speed = IB_SPEED_FDR10;
- } else {
- *active_width = IB_WIDTH_4X;
- *active_speed = IB_SPEED_EDR;
- }
-}
-
static int create_qp_validate_user_data(struct usnic_ib_create_qp_cmd cmd)
{
if (cmd.spec.trans_type <= USNIC_TRANSPORT_UNKNOWN ||
@@ -326,12 +305,16 @@ int usnic_ib_query_port(struct ib_device *ibdev, u8 port,
struct ib_port_attr *props)
{
struct usnic_ib_dev *us_ibdev = to_usdev(ibdev);
- struct ethtool_link_ksettings cmd;
usnic_dbg("\n");
mutex_lock(&us_ibdev->usdev_lock);
- __ethtool_get_link_ksettings(us_ibdev->netdev, &cmd);
+ if (!ib_get_eth_speed(ibdev, port, &props->active_speed,
+ &props->active_width)) {
+ mutex_unlock(&us_ibdev->usdev_lock);
+ return -EINVAL;
+ }
+
/* props being zeroed by the caller, avoid zeroing it here */
props->lid = 0;
@@ -355,8 +338,6 @@ int usnic_ib_query_port(struct ib_device *ibdev, u8 port,
props->pkey_tbl_len = 1;
props->bad_pkey_cntr = 0;
props->qkey_viol_cntr = 0;
- eth_speed_to_ib_speed(cmd.base.speed, &props->active_speed,
- &props->active_width);
props->max_mtu = IB_MTU_4096;
props->active_mtu = iboe_get_mtu(us_ibdev->ufdev->mtu);
/* Userspace will adjust for hdrs */
diff --git a/drivers/infiniband/sw/rxe/rxe_verbs.c b/drivers/infiniband/sw/rxe/rxe_verbs.c
index 83d709e..4570f04 100644
--- a/drivers/infiniband/sw/rxe/rxe_verbs.c
+++ b/drivers/infiniband/sw/rxe/rxe_verbs.c
@@ -51,40 +51,16 @@ static int rxe_query_device(struct ib_device *dev,
return 0;
}
-static void rxe_eth_speed_to_ib_speed(int speed, u8 *active_speed,
- u8 *active_width)
-{
- if (speed <= 1000) {
- *active_width = IB_WIDTH_1X;
- *active_speed = IB_SPEED_SDR;
- } else if (speed <= 10000) {
- *active_width = IB_WIDTH_1X;
- *active_speed = IB_SPEED_FDR10;
- } else if (speed <= 20000) {
- *active_width = IB_WIDTH_4X;
- *active_speed = IB_SPEED_DDR;
- } else if (speed <= 30000) {
- *active_width = IB_WIDTH_4X;
- *active_speed = IB_SPEED_QDR;
- } else if (speed <= 40000) {
- *active_width = IB_WIDTH_4X;
- *active_speed = IB_SPEED_FDR10;
- } else {
- *active_width = IB_WIDTH_4X;
- *active_speed = IB_SPEED_EDR;
- }
-}
-
static int rxe_query_port(struct ib_device *dev,
u8 port_num, struct ib_port_attr *attr)
{
struct rxe_dev *rxe = to_rdev(dev);
struct rxe_port *port;
- u32 speed;
+ int rc = -EINVAL;
if (unlikely(port_num != 1)) {
pr_warn("invalid port_number %d\n", port_num);
- goto err1;
+ goto out;
}
port = &rxe->port;
@@ -93,29 +69,12 @@ static int rxe_query_port(struct ib_device *dev,
*attr = port->attr;
mutex_lock(&rxe->usdev_lock);
- if (rxe->ndev->ethtool_ops->get_link_ksettings) {
- struct ethtool_link_ksettings ks;
-
- rxe->ndev->ethtool_ops->get_link_ksettings(rxe->ndev, &ks);
- speed = ks.base.speed;
- } else if (rxe->ndev->ethtool_ops->get_settings) {
- struct ethtool_cmd cmd;
-
- rxe->ndev->ethtool_ops->get_settings(rxe->ndev, &cmd);
- speed = cmd.speed;
- } else {
- pr_warn("%s speed is unknown, defaulting to 1000\n",
- rxe->ndev->name);
- speed = 1000;
- }
- rxe_eth_speed_to_ib_speed(speed, &attr->active_speed,
- &attr->active_width);
+ rc = ib_get_eth_speed(dev, port_num, &attr->active_speed,
+ &attr->active_width);
mutex_unlock(&rxe->usdev_lock);
- return 0;
-
-err1:
- return -EINVAL;
+out:
+ return rc;
}
static int rxe_query_gid(struct ib_device *device,
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index ba8314e..860cb30 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -3488,6 +3488,7 @@ void ib_drain_qp(struct ib_qp *qp);
int ib_resolve_eth_dmac(struct ib_device *device,
struct rdma_ah_attr *ah_attr);
+int ib_get_eth_speed(struct ib_device *dev, u8 port_num, u8 *speed, u8 *width);
static inline u8 *rdma_ah_retrieve_dmac(struct rdma_ah_attr *attr)
{
--
2.9.4
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