diff options
Diffstat (limited to 'drivers/infiniband/core/verbs.c')
-rw-r--r-- | drivers/infiniband/core/verbs.c | 117 |
1 files changed, 111 insertions, 6 deletions
diff --git a/drivers/infiniband/core/verbs.c b/drivers/infiniband/core/verbs.c index fb98ed67d5bc..3d1de62de839 100644 --- a/drivers/infiniband/core/verbs.c +++ b/drivers/infiniband/core/verbs.c @@ -1244,6 +1244,18 @@ int ib_resolve_eth_dmac(struct ib_device *device, if (rdma_link_local_addr((struct in6_addr *)grh->dgid.raw)) { rdma_get_ll_mac((struct in6_addr *)grh->dgid.raw, ah_attr->roce.dmac); + return 0; + } + if (rdma_is_multicast_addr((struct in6_addr *)ah_attr->grh.dgid.raw)) { + if (ipv6_addr_v4mapped((struct in6_addr *)ah_attr->grh.dgid.raw)) { + __be32 addr = 0; + + memcpy(&addr, ah_attr->grh.dgid.raw + 12, 4); + ip_eth_mc_map(addr, (char *)ah_attr->roce.dmac); + } else { + ipv6_eth_mc_map((struct in6_addr *)ah_attr->grh.dgid.raw, + (char *)ah_attr->roce.dmac); + } } else { union ib_gid sgid; struct ib_gid_attr sgid_attr; @@ -1302,6 +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) @@ -1569,15 +1636,53 @@ EXPORT_SYMBOL(ib_dealloc_fmr); /* Multicast groups */ +static bool is_valid_mcast_lid(struct ib_qp *qp, u16 lid) +{ + struct ib_qp_init_attr init_attr = {}; + struct ib_qp_attr attr = {}; + int num_eth_ports = 0; + int port; + + /* If QP state >= init, it is assigned to a port and we can check this + * port only. + */ + if (!ib_query_qp(qp, &attr, IB_QP_STATE | IB_QP_PORT, &init_attr)) { + if (attr.qp_state >= IB_QPS_INIT) { + if (qp->device->get_link_layer(qp->device, attr.port_num) != + IB_LINK_LAYER_INFINIBAND) + return true; + goto lid_check; + } + } + + /* Can't get a quick answer, iterate over all ports */ + for (port = 0; port < qp->device->phys_port_cnt; port++) + if (qp->device->get_link_layer(qp->device, port) != + IB_LINK_LAYER_INFINIBAND) + num_eth_ports++; + + /* If we have at lease one Ethernet port, RoCE annex declares that + * multicast LID should be ignored. We can't tell at this step if the + * QP belongs to an IB or Ethernet port. + */ + if (num_eth_ports) + return true; + + /* If all the ports are IB, we can check according to IB spec. */ +lid_check: + return !(lid < be16_to_cpu(IB_MULTICAST_LID_BASE) || + lid == be16_to_cpu(IB_LID_PERMISSIVE)); +} + int ib_attach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid) { int ret; if (!qp->device->attach_mcast) return -ENOSYS; - if (gid->raw[0] != 0xff || qp->qp_type != IB_QPT_UD || - lid < be16_to_cpu(IB_MULTICAST_LID_BASE) || - lid == be16_to_cpu(IB_LID_PERMISSIVE)) + + if (!rdma_is_multicast_addr((struct in6_addr *)gid->raw) || + qp->qp_type != IB_QPT_UD || !is_valid_mcast_lid(qp, lid)) return -EINVAL; ret = qp->device->attach_mcast(qp, gid, lid); @@ -1593,9 +1698,9 @@ int ib_detach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid) if (!qp->device->detach_mcast) return -ENOSYS; - if (gid->raw[0] != 0xff || qp->qp_type != IB_QPT_UD || - lid < be16_to_cpu(IB_MULTICAST_LID_BASE) || - lid == be16_to_cpu(IB_LID_PERMISSIVE)) + + if (!rdma_is_multicast_addr((struct in6_addr *)gid->raw) || + qp->qp_type != IB_QPT_UD || !is_valid_mcast_lid(qp, lid)) return -EINVAL; ret = qp->device->detach_mcast(qp, gid, lid); |