/*
* 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 <linux/pci.h>
#include <rdma/ib_addr.h>
#include <rdma/ib_cache.h>
#include "hns_roce_device.h"
#include "hns_roce_hw_v2.h"
static inline u16 get_ah_udp_sport(const struct rdma_ah_attr *ah_attr)
{
u32 fl = ah_attr->grh.flow_label;
u16 sport;
if (!fl)
sport = get_random_u32_inclusive(IB_ROCE_UDP_ENCAP_VALID_PORT_MIN,
IB_ROCE_UDP_ENCAP_VALID_PORT_MAX);
else
sport = rdma_flow_label_to_udp_sport(fl);
return sport;
}
int hns_roce_create_ah(struct ib_ah *ibah, struct rdma_ah_init_attr *init_attr,
struct ib_udata *udata)
{
struct rdma_ah_attr *ah_attr = init_attr->ah_attr;
const struct ib_global_route *grh = rdma_ah_read_grh(ah_attr);
struct hns_roce_dev *hr_dev = to_hr_dev(ibah->device);
struct hns_roce_ib_create_ah_resp resp = {};
struct hns_roce_ah *ah = to_hr_ah(ibah);
u8 tclass = get_tclass(grh);
u8 priority = 0 ;
u8 tc_mode = 0 ;
int ret;
if (hr_dev->pci_dev->revision == PCI_REVISION_ID_HIP08 && udata) {
ret = -EOPNOTSUPP;
goto err_out;
}
ah->av.port = rdma_ah_get_port_num(ah_attr);
ah->av.gid_index = grh->sgid_index;
if (rdma_ah_get_static_rate(ah_attr))
ah->av.stat_rate = IB_RATE_10_GBPS;
ah->av.hop_limit = grh->hop_limit;
ah->av.flowlabel = grh->flow_label;
ah->av.udp_sport = get_ah_udp_sport(ah_attr);
ah->av.tclass = tclass;
ret = hr_dev->hw->get_dscp(hr_dev, tclass, &tc_mode, &priority);
if (ret == -EOPNOTSUPP)
ret = 0 ;
if (ret && grh->sgid_attr->gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP)
goto err_out;
if (tc_mode == HNAE3_TC_MAP_MODE_DSCP &&
grh->sgid_attr->gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP)
ah->av.sl = priority;
else
ah->av.sl = rdma_ah_get_sl(ah_attr);
if (!check_sl_valid(hr_dev, ah->av.sl)) {
ret = -EINVAL;
goto err_out;
}
memcpy(ah->av.dgid, grh->dgid.raw, HNS_ROCE_GID_SIZE);
memcpy(ah->av.mac, ah_attr->roce.dmac, ETH_ALEN);
/* HIP08 needs to record vlan info in Address Vector */
if (hr_dev->pci_dev->revision == PCI_REVISION_ID_HIP08) {
ret = rdma_read_gid_l2_fields(ah_attr->grh.sgid_attr,
&ah->av.vlan_id, NULL);
if (ret)
goto err_out;
ah->av.vlan_en = ah->av.vlan_id < VLAN_N_VID;
}
if (udata) {
resp.priority = ah->av.sl;
resp.tc_mode = tc_mode;
memcpy(resp.dmac, ah_attr->roce.dmac, ETH_ALEN);
ret = ib_copy_to_udata(udata, &resp,
min(udata->outlen, sizeof (resp)));
}
err_out:
if (ret)
atomic64_inc(&hr_dev->dfx_cnt[HNS_ROCE_DFX_AH_CREATE_ERR_CNT]);
return ret;
}
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, ah->av.sl);
rdma_ah_set_port_num(ah_attr, ah->av.port);
rdma_ah_set_static_rate(ah_attr, ah->av.stat_rate);
rdma_ah_set_grh(ah_attr, NULL, ah->av.flowlabel,
ah->av.gid_index, ah->av.hop_limit, ah->av.tclass);
rdma_ah_set_dgid_raw(ah_attr, ah->av.dgid);
return 0 ;
}
Messung V0.5 in Prozent C=95 H=96 G=95
¤ Dauer der Verarbeitung: 0.12 Sekunden
(vorverarbeitet am 2026-10-11)
¤
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