diff --git a/0091-libhns-Fix-the-identification-mark-of-RDMA-UD-packet.patch b/0091-libhns-Fix-the-identification-mark-of-RDMA-UD-packet.patch new file mode 100644 index 0000000000000000000000000000000000000000..224de02f00ab8d569928c377b4141ba0c46f0a5f --- /dev/null +++ b/0091-libhns-Fix-the-identification-mark-of-RDMA-UD-packet.patch @@ -0,0 +1,45 @@ +From 12c5c68053977fcd3ac872f080de6d5a2377f5e6 Mon Sep 17 00:00:00 2001 +From: Dazhao Lao +Date: Tue, 25 Feb 2025 14:51:07 +0800 +Subject: [PATCH] libhns: Fix the identification mark of RDMA UD packets in ROH + mode. + +Currently, DMAC[0]=0xFF is used as the special processing +identification mark of RDMA UD packets. After ROH_MAC +recognizes this mark, it goes to IP over HCCS and retains +the IP header information to meet the needs of MPI and RDMA +CM link establishment; but DMAC[0]=0xFF is a special +processing that will modify the DMAC to a multicast MAC +address. In MPI usage scenarios, there are a large number +of loopback messages, causing the multicast address to be +directly loopback processed by the SSU. The performance of +the SSU in processing multicast messages Lower than unicast +packets, there is a performance bottleneck. + +The patch modifies the special identification mark of RMDA +UD messages in ROH mode, using DMAC[0]=0xF0 as the +identifier, so that DMAC is a unicast MAC address, thereby +avoiding the bottleneck of multicast message processing. + +Fixes: 406d04f2ec27 ("libhns: Add the parsing of mac type in RoH mode") +Signed-off-by: Dazhao Lao +--- + providers/hns/hns_roce_u_hw_v2.c | 2 +- + 1 file changed, 1 insertion(+), 1 deletion(-) + +diff --git a/providers/hns/hns_roce_u_hw_v2.c b/providers/hns/hns_roce_u_hw_v2.c +index 62bf478..1bbd788 100644 +--- a/providers/hns/hns_roce_u_hw_v2.c ++++ b/providers/hns/hns_roce_u_hw_v2.c +@@ -1428,7 +1428,7 @@ static int set_ud_wqe(void *wqe, struct hns_roce_qp *qp, struct ibv_send_wr *wr, + return ret; + + if (hr_dev->link_type == HNS_DEV_LINK_TYPE_HCCS) +- ud_sq_wqe->dmac[0] = 0xFF; ++ ud_sq_wqe->dmac[0] = 0xF0; + + ret = fill_ud_data_seg(ud_sq_wqe, qp, wr, sge_info); + if (ret) +-- +2.33.0 + diff --git a/rdma-core.spec b/rdma-core.spec index 5e7be9905978f9d80505c567faf1376251d80a35..369d9b89ab582047cf8df358fc568883a303236d 100644 --- a/rdma-core.spec +++ b/rdma-core.spec @@ -1,6 +1,6 @@ Name: rdma-core Version: 41.0 -Release: 29 +Release: 30 Summary: RDMA core userspace libraries and daemons License: GPLv2 or BSD Url: https://github.com/linux-rdma/rdma-core @@ -96,6 +96,7 @@ patch87: 0087-libhns-Fix-out-of-order-issue-of-requester-when-sett.patch patch88: 0088-libhns-Fix-reference-to-uninitialized-cq-pointer.patch patch89: 0089-libhns-Fix-bypassed-vendor-check-in-hnsdv_query_devi.patch patch90: 0090-libhns-Fix-coredump-during-QP-destruction-when-send_.patch +patch91: 0091-libhns-Fix-the-identification-mark-of-RDMA-UD-packet.patch BuildRequires: binutils cmake >= 2.8.11 gcc libudev-devel pkgconfig pkgconfig(libnl-3.0) BuildRequires: pkgconfig(libnl-route-3.0) valgrind-devel systemd systemd-devel @@ -343,6 +344,12 @@ fi %{_mandir}/* %changelog +* Thu Feb 25 2025 Dazhao Lao - 41.0-30 +- Type: bugfix +- ID: NA +- SUG: NA +- DESC: Fixed roh ud wqe dmac in libhns + * Thu Jan 2 2025 Xinghai Cen - 41.0-29 - Type: bugfix - ID: NA