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a70c07397f
Instead of RoCE drivers figuring out vlan, smac fields while working on QP/AH, provide a helper routine to read the L2 fields such as vlan_id and source mac address. This moves logic from mlx5 driver to core for wider usage for RoCE ports. This is a preparation patch to allow detaching netdev in subsequent patch. Signed-off-by: Parav Pandit <parav@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
114 lines
3.6 KiB
C
114 lines
3.6 KiB
C
/*
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* Copyright (c) 2016 Hisilicon Limited.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include <linux/platform_device.h>
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#include <rdma/ib_addr.h>
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#include <rdma/ib_cache.h>
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#include "hns_roce_device.h"
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#define HNS_ROCE_PORT_NUM_SHIFT 24
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#define HNS_ROCE_VLAN_SL_BIT_MASK 7
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#define HNS_ROCE_VLAN_SL_SHIFT 13
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int hns_roce_create_ah(struct ib_ah *ibah, struct rdma_ah_attr *ah_attr,
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u32 flags, struct ib_udata *udata)
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{
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struct hns_roce_dev *hr_dev = to_hr_dev(ibah->device);
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const struct ib_gid_attr *gid_attr;
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struct device *dev = hr_dev->dev;
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struct hns_roce_ah *ah = to_hr_ah(ibah);
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u16 vlan_tag = 0xffff;
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const struct ib_global_route *grh = rdma_ah_read_grh(ah_attr);
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bool vlan_en = false;
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int ret;
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gid_attr = ah_attr->grh.sgid_attr;
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ret = rdma_read_gid_l2_fields(gid_attr, &vlan_tag, NULL);
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if (ret)
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return ret;
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/* Get mac address */
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memcpy(ah->av.mac, ah_attr->roce.dmac, ETH_ALEN);
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if (vlan_tag < VLAN_CFI_MASK) {
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vlan_en = true;
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vlan_tag |= (rdma_ah_get_sl(ah_attr) &
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HNS_ROCE_VLAN_SL_BIT_MASK) <<
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HNS_ROCE_VLAN_SL_SHIFT;
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}
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ah->av.port_pd = cpu_to_le32(to_hr_pd(ibah->pd)->pdn |
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(rdma_ah_get_port_num(ah_attr) <<
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HNS_ROCE_PORT_NUM_SHIFT));
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ah->av.gid_index = grh->sgid_index;
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ah->av.vlan = cpu_to_le16(vlan_tag);
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ah->av.vlan_en = vlan_en;
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dev_dbg(dev, "gid_index = 0x%x,vlan = 0x%x\n", ah->av.gid_index,
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ah->av.vlan);
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if (rdma_ah_get_static_rate(ah_attr))
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ah->av.stat_rate = IB_RATE_10_GBPS;
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memcpy(ah->av.dgid, grh->dgid.raw, HNS_ROCE_GID_SIZE);
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ah->av.sl_tclass_flowlabel = cpu_to_le32(rdma_ah_get_sl(ah_attr) <<
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HNS_ROCE_SL_SHIFT);
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return 0;
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}
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int hns_roce_query_ah(struct ib_ah *ibah, struct rdma_ah_attr *ah_attr)
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{
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struct hns_roce_ah *ah = to_hr_ah(ibah);
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memset(ah_attr, 0, sizeof(*ah_attr));
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rdma_ah_set_sl(ah_attr, (le32_to_cpu(ah->av.sl_tclass_flowlabel) >>
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HNS_ROCE_SL_SHIFT));
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rdma_ah_set_port_num(ah_attr, (le32_to_cpu(ah->av.port_pd) >>
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HNS_ROCE_PORT_NUM_SHIFT));
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rdma_ah_set_static_rate(ah_attr, ah->av.stat_rate);
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rdma_ah_set_grh(ah_attr, NULL,
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(le32_to_cpu(ah->av.sl_tclass_flowlabel) &
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HNS_ROCE_FLOW_LABEL_MASK), ah->av.gid_index,
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ah->av.hop_limit,
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(le32_to_cpu(ah->av.sl_tclass_flowlabel) >>
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HNS_ROCE_TCLASS_SHIFT));
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rdma_ah_set_dgid_raw(ah_attr, ah->av.dgid);
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return 0;
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}
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void hns_roce_destroy_ah(struct ib_ah *ah, u32 flags)
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{
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return;
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}
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