diff options
Diffstat (limited to 'drivers/infiniband/core/verbs.c')
| -rw-r--r-- | drivers/infiniband/core/verbs.c | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/drivers/infiniband/core/verbs.c b/drivers/infiniband/core/verbs.c index e8006677b01c..3d1de62de839 100644 --- a/drivers/infiniband/core/verbs.c +++ b/drivers/infiniband/core/verbs.c @@ -1314,6 +1314,61 @@ int ib_modify_qp_with_udata(struct ib_qp *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, 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 -EOPNOTSUPP; + + netdev = dev->get_netdev(dev, port_num); + if (!netdev) + return -ENODEV; + + 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) |