From 76cb841cb886eef6b3bee341a2266c76578724ad Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Mon, 6 May 2024 03:02:30 +0200 Subject: Adding upstream version 4.19.249. Signed-off-by: Daniel Baumann --- drivers/infiniband/hw/hns/hns_roce_ah.c | 114 ++++++++++++++++++++++++++++++++ 1 file changed, 114 insertions(+) create mode 100644 drivers/infiniband/hw/hns/hns_roce_ah.c (limited to 'drivers/infiniband/hw/hns/hns_roce_ah.c') diff --git a/drivers/infiniband/hw/hns/hns_roce_ah.c b/drivers/infiniband/hw/hns/hns_roce_ah.c new file mode 100644 index 000000000..d2d4ab9ab --- /dev/null +++ b/drivers/infiniband/hw/hns/hns_roce_ah.c @@ -0,0 +1,114 @@ +/* + * Copyright (c) 2016 Hisilicon Limited. + * + * This software is available to you under a choice of one of two + * licenses. You may choose to be licensed under the terms of the GNU + * General Public License (GPL) Version 2, available from the file + * COPYING in the main directory of this source tree, or the + * OpenIB.org BSD license below: + * + * Redistribution and use in source and binary forms, with or + * without modification, are permitted provided that the following + * conditions are met: + * + * - Redistributions of source code must retain the above + * copyright notice, this list of conditions and the following + * disclaimer. + * + * - Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials + * provided with the distribution. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ + +#include +#include +#include +#include "hns_roce_device.h" + +#define HNS_ROCE_PORT_NUM_SHIFT 24 +#define HNS_ROCE_VLAN_SL_BIT_MASK 7 +#define HNS_ROCE_VLAN_SL_SHIFT 13 + +struct ib_ah *hns_roce_create_ah(struct ib_pd *ibpd, + struct rdma_ah_attr *ah_attr, + struct ib_udata *udata) +{ + struct hns_roce_dev *hr_dev = to_hr_dev(ibpd->device); + const struct ib_gid_attr *gid_attr; + struct device *dev = hr_dev->dev; + struct hns_roce_ah *ah; + u16 vlan_tag = 0xffff; + const struct ib_global_route *grh = rdma_ah_read_grh(ah_attr); + + ah = kzalloc(sizeof(*ah), GFP_ATOMIC); + if (!ah) + return ERR_PTR(-ENOMEM); + + /* Get mac address */ + memcpy(ah->av.mac, ah_attr->roce.dmac, ETH_ALEN); + + gid_attr = ah_attr->grh.sgid_attr; + if (is_vlan_dev(gid_attr->ndev)) + vlan_tag = vlan_dev_vlan_id(gid_attr->ndev); + + if (vlan_tag < 0x1000) + vlan_tag |= (rdma_ah_get_sl(ah_attr) & + HNS_ROCE_VLAN_SL_BIT_MASK) << + HNS_ROCE_VLAN_SL_SHIFT; + + ah->av.port_pd = cpu_to_le32(to_hr_pd(ibpd)->pdn | + (rdma_ah_get_port_num(ah_attr) << + HNS_ROCE_PORT_NUM_SHIFT)); + ah->av.gid_index = grh->sgid_index; + ah->av.vlan = cpu_to_le16(vlan_tag); + dev_dbg(dev, "gid_index = 0x%x,vlan = 0x%x\n", ah->av.gid_index, + ah->av.vlan); + + if (rdma_ah_get_static_rate(ah_attr)) + ah->av.stat_rate = IB_RATE_10_GBPS; + + memcpy(ah->av.dgid, grh->dgid.raw, HNS_ROCE_GID_SIZE); + ah->av.sl_tclass_flowlabel = cpu_to_le32(rdma_ah_get_sl(ah_attr) << + HNS_ROCE_SL_SHIFT); + + return &ah->ibah; +} + +int hns_roce_query_ah(struct ib_ah *ibah, struct rdma_ah_attr *ah_attr) +{ + struct hns_roce_ah *ah = to_hr_ah(ibah); + + memset(ah_attr, 0, sizeof(*ah_attr)); + + rdma_ah_set_sl(ah_attr, (le32_to_cpu(ah->av.sl_tclass_flowlabel) >> + HNS_ROCE_SL_SHIFT)); + rdma_ah_set_port_num(ah_attr, (le32_to_cpu(ah->av.port_pd) >> + HNS_ROCE_PORT_NUM_SHIFT)); + rdma_ah_set_static_rate(ah_attr, ah->av.stat_rate); + rdma_ah_set_grh(ah_attr, NULL, + (le32_to_cpu(ah->av.sl_tclass_flowlabel) & + HNS_ROCE_FLOW_LABEL_MASK), ah->av.gid_index, + ah->av.hop_limit, + (le32_to_cpu(ah->av.sl_tclass_flowlabel) >> + HNS_ROCE_TCLASS_SHIFT)); + rdma_ah_set_dgid_raw(ah_attr, ah->av.dgid); + + return 0; +} + +int hns_roce_destroy_ah(struct ib_ah *ah) +{ + kfree(to_hr_ah(ah)); + + return 0; +} -- cgit v1.2.3