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
