Re: Problems using krping

[Steve Wise <swise-7bPotxP6k4+P2YhJcF5u+vpXobYPEAuW@public.gmane.org>]

It appears the MLX4 driver does not support kernel mode memory regions.  
You'll have to use dma mrs or fast_reg mrs with that device.

Steve.




lihaidong wrote:
> Mr.Wise:
>  
> When using mr mode as the memory registration method, krping failed to 
> get memory region using ib_reg_phys_mr().Could you help me, please?
>  
> dmesg:
> krping_init
> krping: proc write |client,addr=10.10.10.15,mem_mode=mr,port=9999,count=1,verbose|
> client
> ipaddr (10.10.10.15)
> port 9999
> count 1
> verbose
> created cm_id ffff88013c74c800
> cma_event type 0 cma_id ffff88013c74c800 (parent)
> cma_event type 2 cma_id ffff88013c74c800 (parent)
> rdma_resolve_addr - rdma_resolve_route successful
> created pd ffff880133845280
> created cq ffff88013c1ff400
> created qp ffff88013c1ffe00
> krping: krping_setup_buffers called on cb ffff88013c59f800
> krping: recv buf dma_addr 13c59f968 size 16
> krping: recv_buf reg_mr failed
> krping: krping_setup_buffers failed: -38
> destroy cm_id ffff88013c74c800
> krping: proc write |client,addr=10.10.10.15,mem_mode=mr,port=9999,count=1,verbose|
> client
> ipaddr (10.10.10.15)
> port 9999
> count 1
> verbose
> created cm_id ffff88013c59f800
> cma_event type 0 cma_id ffff88013c59f800 (parent)
> cma_event type 2 cma_id ffff88013c59f800 (parent)
> rdma_resolve_addr - rdma_resolve_route successful
> created pd ffff88012f5964a0
> created cq ffff88012faee400
> created qp ffff88012faeec00
> krping: krping_setup_buffers called on cb ffff88013c71d400
> krping: recv buf dma_addr 13c71d568 size 16
> krping: recv_buf reg_mr failed
> krping: krping_setup_buffers failed: -38
> destroy cm_id ffff88013c59f800
>  
>  
> echo "client,addr=10.10.10.15,mem_mode=mr,port=9999,count=1" > /proc/krping 
>
> echo "server,addr=10.10.10.15,mem_mode=mr,port=9999" > /proc/krping
>  
> Using OFED-1.5 ofa_kernel-1.5
> HardWare:Mellanox Technologies MT26428 [ConnectX VPI PCIe 2.0 5GT/s - IB QDR / 10GigE] 
>
> put krping source files into drivers/infiniband/hw/mlx4
>  
> 2010-01-21
> ------------------------------------------------------------------------
> lihaidong

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