17d41b3385
driver inclusion category: bugfix bugzilla: https://gitee.com/src-openeuler/rdma-core/issues/IBOR88 ---------------------------------------------------------------------- Fixes several bugs for hns: libhns: Add the parsing of mac type in RoH mode Signed-off-by: Dazhao Lao <laodazhao@huawei.com>
46 lines
1.8 KiB
Diff
46 lines
1.8 KiB
Diff
From 12c5c68053977fcd3ac872f080de6d5a2377f5e6 Mon Sep 17 00:00:00 2001
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From: Dazhao Lao <laodazhao@huawei.com>
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Date: Tue, 25 Feb 2025 14:51:07 +0800
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Subject: [PATCH] libhns: Fix the identification mark of RDMA UD packets in ROH
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mode.
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Currently, DMAC[0]=0xFF is used as the special processing
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identification mark of RDMA UD packets. After ROH_MAC
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recognizes this mark, it goes to IP over HCCS and retains
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the IP header information to meet the needs of MPI and RDMA
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CM link establishment; but DMAC[0]=0xFF is a special
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processing that will modify the DMAC to a multicast MAC
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address. In MPI usage scenarios, there are a large number
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of loopback messages, causing the multicast address to be
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directly loopback processed by the SSU. The performance of
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the SSU in processing multicast messages Lower than unicast
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packets, there is a performance bottleneck.
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The patch modifies the special identification mark of RMDA
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UD messages in ROH mode, using DMAC[0]=0xF0 as the
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identifier, so that DMAC is a unicast MAC address, thereby
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avoiding the bottleneck of multicast message processing.
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Fixes: 406d04f2ec27 ("libhns: Add the parsing of mac type in RoH mode")
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Signed-off-by: Dazhao Lao <laodazhao@huawei.com>
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---
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providers/hns/hns_roce_u_hw_v2.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/providers/hns/hns_roce_u_hw_v2.c b/providers/hns/hns_roce_u_hw_v2.c
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index 62bf478..1bbd788 100644
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--- a/providers/hns/hns_roce_u_hw_v2.c
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+++ b/providers/hns/hns_roce_u_hw_v2.c
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@@ -1428,7 +1428,7 @@ static int set_ud_wqe(void *wqe, struct hns_roce_qp *qp, struct ibv_send_wr *wr,
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return ret;
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if (hr_dev->link_type == HNS_DEV_LINK_TYPE_HCCS)
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- ud_sq_wqe->dmac[0] = 0xFF;
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+ ud_sq_wqe->dmac[0] = 0xF0;
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ret = fill_ud_data_seg(ud_sq_wqe, qp, wr, sge_info);
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if (ret)
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--
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2.33.0
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