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AJvYcCXWUXhw4Q+PW+TEC76dEQ8LkR5n+zKptxuzNq7yF5CcZaoiZUFRYiFGjnq9LLP164/16Wr7pBt4dc2Lr/IapURVTQh5ibRzKjnOTA== X-Gm-Message-State: AOJu0YwWuZ+L4kRSyfqHCEaWmvqGAN1/Q4R+/mb9d85y9amzoGKihyOI 5FhuxD479uhUhDKGrCSxr45ozTXdXvboTzlkRMc8b/BOeatgt8PZvdGh5pqa X-Google-Smtp-Source: AGHT+IHO9M0y7K4W0qJmoVM+1kKrJqZuzDRMIP69jZu+QiiYgUgpsq4TODJygwVfqrvPN7flYphRGg== X-Received: by 2002:a05:600c:4e16:b0:41a:6229:396b with SMTP id b22-20020a05600c4e1600b0041a6229396bmr7441454wmq.10.1714983962708; Mon, 06 May 2024 01:26:02 -0700 (PDT) Received: from [10.16.155.254] ([212.227.34.98]) by smtp.gmail.com with ESMTPSA id p12-20020a05600c1d8c00b0041bcb898984sm15239524wms.31.2024.05.06.01.26.02 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 06 May 2024 01:26:02 -0700 (PDT) From: Zhu Yanjun X-Google-Original-From: Zhu Yanjun Message-ID: <7b0e61e1-8d50-4431-bd0a-6398c618a609@linux.dev> Date: Mon, 6 May 2024 10:26:01 +0200 Precedence: bulk X-Mailing-List: linux-rdma@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [question] when bonding with CX5 network card that support ROCE To: shaozhengchao , saeedm@nvidia.com, tariqt@nvidia.com, borisp@nvidia.com, shayd@nvidia.com, msanalla@nvidia.com, Rahul Rameshbabu , weizhang@nvidia.com, kliteyn@nvidia.com, erezsh@nvidia.com, igozlan@nvidia.com Cc: netdev , linux-rdma@vger.kernel.org References: <756aaf3c-5a15-8d18-89d4-ea7380cf845d@huawei.com> Content-Language: en-US In-Reply-To: <756aaf3c-5a15-8d18-89d4-ea7380cf845d@huawei.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit On 06.05.24 06:46, shaozhengchao wrote: > > When using the 5.10 kernel, I can find two IB devices using the > ibv_devinfo command. > ---------------------------------- > [root@localhost ~]# lspci > 91:00.0 Ethernet controller: Mellanox Technologies MT27800 Family > [ConnectX-5] > 91:00.1 Ethernet controller: Mellanox Technologies MT27800 Family > ---------------------------------- > [root@localhost ~]# ibv_devinfo > hca_id: mlx5_0 >         transport:                      InfiniBand (0) >         fw_ver:                         16.31.1014 >         node_guid:                      f41d:6b03:006f:4743 >         sys_image_guid:                 f41d:6b03:006f:4743 >         vendor_id:                      0x02c9 >         vendor_part_id:                 4119 >         hw_ver:                         0x0 >         board_id:                       HUA0000000004 >         phys_port_cnt:                  1 >                 port:   1 >                         state:                  PORT_ACTIVE (4) >                         max_mtu:                4096 (5) >                         active_mtu:             1024 (3) >                         sm_lid:                 0 >                         port_lid:               0 >                         port_lmc:               0x00 >                         link_layer:             Ethernet > > hca_id: mlx5_1 >         transport:                      InfiniBand (0) >         fw_ver:                         16.31.1014 >         node_guid:                      f41d:6b03:006f:4744 >         sys_image_guid:                 f41d:6b03:006f:4743 >         vendor_id:                      0x02c9 >         vendor_part_id:                 4119 >         hw_ver:                         0x0 >         board_id:                       HUA0000000004 >         phys_port_cnt:                  1 >                 port:   1 >                         state:                  PORT_ACTIVE (4) >                         max_mtu:                4096 (5) >                         active_mtu:             1024 (3) >                         sm_lid:                 0 >                         port_lid:               0 >                         port_lmc:               0x00 >                         link_layer:             Ethernet > ---------------------------------- > But after the two network ports are bonded, only one IB device is > available, and only PF0 can be used. > [root@localhost shaozhengchao]# ibv_devinfo > hca_id: mlx5_bond_0 >         transport:                      InfiniBand (0) >         fw_ver:                         16.31.1014 >         node_guid:                      f41d:6b03:006f:4743 >         sys_image_guid:                 f41d:6b03:006f:4743 >         vendor_id:                      0x02c9 >         vendor_part_id:                 4119 >         hw_ver:                         0x0 >         board_id:                       HUA0000000004 >         phys_port_cnt:                  1 >                 port:   1 >                         state:                  PORT_ACTIVE (4) >                         max_mtu:                4096 (5) >                         active_mtu:             1024 (3) >                         sm_lid:                 0 >                         port_lid:               0 >                         port_lmc:               0x00 >                         link_layer:             Ethernet > > The current Linux mainline driver is the same. > > I found the comment ("If bonded, we do not add an IB device for PF1.") > in the mlx5_lag_intf_add function of the 5.10 branch driver code. Not sure if rdma lag is enabled for this or not. /proc/net/bonding will provide more more details normally. Zhu Yanjun > This indicates that wthe the same NIC is used, only PF0 support bonding? > Are there any other constraints, when enable bonding with CX5? > > Thank you > Zhengchao Shao