2553ba217e
Introduce a 'flags' field to destroy address handle callback and add a flag that marks whether the callback is executed in an atomic context or not. This will allow drivers to wait for completion instead of polling for it when it is allowed. Signed-off-by: Gal Pressman <galpress@amazon.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
120 lines
3.7 KiB
C
120 lines
3.7 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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struct ib_ah *hns_roce_create_ah(struct ib_pd *ibpd,
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struct rdma_ah_attr *ah_attr,
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u32 flags,
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struct ib_udata *udata)
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{
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struct hns_roce_dev *hr_dev = to_hr_dev(ibpd->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;
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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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ah = kzalloc(sizeof(*ah), GFP_ATOMIC);
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if (!ah)
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return ERR_PTR(-ENOMEM);
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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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gid_attr = ah_attr->grh.sgid_attr;
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if (is_vlan_dev(gid_attr->ndev)) {
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vlan_tag = vlan_dev_vlan_id(gid_attr->ndev);
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vlan_en = true;
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}
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if (vlan_tag < 0x1000)
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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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ah->av.port_pd = cpu_to_be32(to_hr_pd(ibpd)->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 &ah->ibah;
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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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int hns_roce_destroy_ah(struct ib_ah *ah, u32 flags)
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{
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kfree(to_hr_ah(ah));
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return 0;
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}
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