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在鲲鹏920 arm机器+Hi1822网卡，使用kernel自带的hinic驱动，执行dcb app show dev enp3s0命令，我未能复现命令hung住现象。
@bylanhao 你好，能否提供网卡型号以及使用的驱动版本，另外如果有其他未在issue中说明的步骤也请补充一下，便于我们更好的复现和确定修复补丁，谢谢。
以下是我的复现步骤，如果有问题也请指出

[root@localhost ~]# uname -r
5.10.0-216.0.0.115.oe2203sp4.aarch64
[root@localhost ~]# rpm -q iproute
iproute-5.15.0-19.oe2203sp4.aarch64
[root@localhost ~]# ethtool -i enp3s0
driver: hinic
version: 2.3.2.17
firmware-version: 2.3.2.8
expansion-rom-version:
bus-info: 0000:03:00.0
supports-statistics: yes
supports-test: yes
supports-eeprom-access: no
supports-register-dump: no
supports-priv-flags: no
[root@localhost ~]# dcb app show dev enp3s0
[root@localhost ~]# echo $?
0
[root@localhost ~]#

@bylanhao 我们需要更详细的信息才能继续复现进而确认修复补丁，麻烦看到之后回复一下

无法复现，缺少定位信息，暂时挂起，有复现环境后打开@bylanhao

@ultra_planet @robertxw
此问题在鲲鹏服务器板载网卡可复现，相应的bugfix已合入主线，已提交PR，请评估合入，多谢！
https://gitee.com/src-openeuler/iproute/pulls/211

@zengwefeng , @MrRlu , @robertxw , @sunsuwan , @xiangyu2020 , @jiangheng12 , @zhongxuan2
以下的要求不是强制性的, 未按模板评论时对issue无任何影响
issue处理注意事项:
1. 当前issue受影响的分支提交pr时, 须在pr描述中填写当前issue编号进行关联, 否则无法关闭当前issue;
2. 模板内容需要填写完整, 无论是受影响或者不受影响都需要填写完整内容,未引入的分支不需要填写, 否则无法关闭当前issue;
3. 以下为模板中需要填写完整的内容, 请复制到评论区回复, 注: 内容的标题名称(影响性分析说明, 缺陷严重等级, 受影响版本排查(受影响/不受影响), 修复是否涉及abi变化(是/否))不能省略,省略后defect-manager将无法正常解析填写内容.
评论区可能使用到的指令说明:

影响性分析说明:

缺陷严重等级:(Critical/High/Moderate/Low)

缺陷根因说明:

受影响版本排查(受影响/不受影响):

1. openEuler-20.03-LTS-SP4:
2. openEuler-22.03-LTS-SP3:
3. openEuler-22.03-LTS-SP4:
4. openEuler-24.03-LTS:
5. openEuler-24.03-LTS-SP1:

abi变化(是/否):

1. openEuler-20.03-LTS-SP4:
2. openEuler-22.03-LTS-SP3:
3. openEuler-22.03-LTS-SP4:
4. openEuler-24.03-LTS:
5. openEuler-24.03-LTS-SP1:

缺陷issue处理具体操作请参考:
https://gitee.com/Coopermassaki/cve-manager/blob/master/cve-vulner-manager/doc/md/defect-manager-manual.md
pr关联issue具体操作请参考:
https://gitee.com/help/articles/4142

社区已解决，合入链接为：https://web.git.kernel.org/pub/scm/network/iproute2/iproute2.git/commit/?id=84c036972659ae9a98aac3cef983cc7dd8e14c53
工具版本v6.1才会带上

问题描述是对不支持dcb对应接口的设备执行dcb操作会挂住，不一定为hinic驱动
当前复现场景为vf设备不支持该操作并挂住：
[root@localhost ~]# dcb pfc set dev eth0 prio-pfc 0:on 1:on 2:on 3:on 4:off 5:of
f 6:off 7:off
[22377.153127][T265777] hns3 0000:35:00.0 eth0: set pfc: pfc_en=0xf, pfc_map=0x1
, num_tc=1
[22377.162340][T265777] hns3 0000:35:00.0 eth0: net stop
[22377.169736][T265747] hns3 0000:35:00.0 eth0: link down
[22377.209289][T265777] hns3 0000:35:00.0 eth0: net open
[root@localhost ~]# [22377.914256][T265747] hns3 0000:35:00.0 eth0: link up

[root@localhost ~]# echo 1 > /sys/class/net/eth0/device/sriov_numvfs
[22403.082556][ T5571] pci 0000:35:01.0: [19e5:a22f] type 00 class 0x020000
[22403.089268][ T5571] pci 0000:35:01.0: enabling Extended Tags
[22403.095316][ T5571] hns3 0000:35:01.0: Failed to enable PASID
[22403.101197][ T5571] hns3 0000:35:01.0: Adding to iommu group 56
[22403.107870][T255088] hns3 0000:35:01.0: enabling device (0000 -> 0002)
[22403.114751][T255088] hns3 0000:35:01.0: The firmware version is 3.10.22.5
[22403.145072][T255088] hns3 0000:35:01.0: finished initializing hclgevf driver
[22403.154191][T255088] hns3 0000:35:01.0: using random MAC address 02::*:
6f:85
[root@localhost ~]# [22403.204098][ T1865] hns3 0000:35:01.0 eth9: net open
[22403.204250][T262195] hns3 0000:35:01.0 eth9: link up
[22403.212200][ T1865] 8021q: adding VLAN 0 to HW filter on device eth9
[22403.222619][T172381] IPv6: ADDRCONF(NETDEV_CHANGE): eth9: link becomes ready

[root@localhost ~]# ifconfig eth9 down
[22414.761828][T265846] hns3 0000:35:01.0 eth9: net stop
[22414.770264][T265846] hns3 0000:35:01.0 eth9: link down
[root@localhost ~]#
[root@localhost ~]# dcb pfc set dev eth9 prio-pfc 0:on 1:on 2:on 3:on 4:off 5:of
f 6:off 7:off

[root@localhost ~]# ifconfig eth9 up
[22563.195833][T265848] hns3 0000:35:01.0 eth9: link up
[22563.195913][T265849] hns3 0000:35:01.0 eth9: net open
[22563.208222][T265849] 8021q: adding VLAN 0 to HW filter on device eth9
[22563.216898][T130741] IPv6: ADDRCONF(NETDEV_CHANGE): eth9: link becomes ready
[root@localhost ~]#
[root@localhost ~]#
[root@localhost ~]# dcb pfc set dev eth9 prio-pfc 0:on 1:on 2:on 3:on 4:off 5:of
f 6:off 7:off

[root@localhost ~]#

解决后的日志（正常返回不支持）：
[root@localhost ~]# echo 1 > /sys/class/net/eth0/device/sriov_numvfs
[537541.629021][T21272] pci 0000:39:01.0: [19e5:a22f] type 00 class 0x020000
[537541.635815][T21272] pci 0000:39:01.0: enabling Extended Tags
[537541.641901][T21272] hns3 0000:39:01.0: Adding to iommu group 37
[root@localhost ~]# [537541.654576][T35994] hclgevf is initializing
[537541.658961][T35994] hns3 0000:39:01.0: enabling device (0000 -> 0002)
[537541.939467][T35994] hns3 0000:39:01.0: The firmware version is 3.10.21.15
[537541.967353][T35994] hns3 0000:39:01.0: finished initializing hclgevf driver
[537541.976472][T35994] hns3 0000:39:01.0: using random MAC address 92::*:
47:90
[537542.040718][T16018] hns3 0000:39:01.0 eth8: net open
[537542.047944][T16018] 8021q: adding VLAN 0 to HW filter on device eth8

[root@localhost ~]#
[root@localhost ~]#
[root@localhost ~]# ifconfig eth8 down
[537559.052393][T36141] hns3 0000:39:01.0 eth8: net stop
[root@localhost ~]# dcb pfc set dev eth8 prio-pfc 0:on 1:on 2:on 3:on 4:off 5:of
f 6:off 7:off
Attribute read: Operation not supported

@openeuler-ci-bot 未对受影响版本排查/abi变化进行分析