Hi Olivier, Your issue looks like an issue fixed recently: http://www.dpdk.org/dev/patchwork/patch/34477/
Best Regards, Xueming > -----Original Message----- > From: dev [mailto:dev-boun...@dpdk.org] On Behalf Of Olivier Gournet > Sent: Tuesday, November 14, 2017 5:58 PM > To: dev@dpdk.org > Subject: [dpdk-dev] mlx5 and secondary processes > > Hi, > > I can't get TX on secondary process to works with the lastest dpdk, it was > running fine with dpdk-16.11. > RX/TX is ok on primary processs, and I'm not interested in RX on secondary > process. Each process has its owns TX queues. > > I upgraded everything to: > linux 4.14 > dpdk 17.11-rc4 > rdma-core from yesterday git-master > mlx-fw 12.21.1000 > > On seconday process, TX queue gets full and is never emptied. > It seems like bf_reg is correctly re-mapped from secondary process; here's > dmesg from primary process: > > [...] > [85361.895778] mlx5_1:uar_mmap:1722:(pid 9533): uar idx 0x6, pfn > 0x00000000000f8020 [85361.895781] mlx5_1:uar_mmap:1735:(pid 9533): mapped > best effort WC at 0x7ffff7faa000, PA 0x00000000f8020000 [85361.895784] > mlx5_1:uar_mmap:1722:(pid 9533): uar idx 0x7, pfn 0x00000000000f8021 > [85361.895787] mlx5_1:uar_mmap:1735:(pid 9533): mapped best effort WC at > 0x7ffff7fa9000, PA 0x00000000f8021000 > > Then from secondary process: > > [...] > [85408.038295] mlx5_1:mlx5_ib_mmap:1778:(pid 9551): mapped internal timer > at 0x7ffff7f7f000, PA 0xf8001000 [85408.040229] mlx5_1:uar_mmap:1722:(pid > 9551): uar idx 0x6, pfn 0x00000000000f8020 [85408.040233] > mlx5_1:uar_mmap:1735:(pid 9551): mapped best effort WC at 0x7ffff7faa000, > PA 0x00000000f8020000 [85408.040239] mlx5_1:uar_mmap:1722:(pid 9551): uar > idx 0x7, pfn 0x00000000000f8021 [85408.040241] mlx5_1:uar_mmap:1735:(pid > 9551): mapped best effort WC at 0x7ffff7fa9000, PA 0x00000000f8021000 > > But then from mlx5_rxtx.h:mlx5_tx_dbrec_cond_wmb() it doesn't seems like > writing to txq->bf_reg has any effect. > I know it isn't supposed to be read, but when reading from primary process > is always give *dst==0xe5ccdabae5ccdaba, whereas from secondary process > *dst is zero or the last written value. > > I don't really have any other clues, and don't know where to search. Can > anybody give me some hints ? > > Regards, > > > ============= > > # ibv_devinfo -d mlx5_1 > hca_id: mlx5_1 > transport: InfiniBand (0) > fw_ver: 12.21.1000 > node_guid: 248a:0703:008a:638e > sys_image_guid: 248a:0703:008a:638e > vendor_id: 0x02c9 > vendor_part_id: 4115 > hw_ver: 0x0 > board_id: MT_2140110033 > phys_port_cnt: 1 > Device ports: > 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
