Re: [dpdk-dev] Testing memnic for VM to VM transfer

[Thomas Monjalon <thomas.monjalon@6wind.com>]

2014-06-18 11:42, Hiroshi Shimamoto:
> 2014-06-18 19:26, GongJinrong:
> > Do you have any idea that how to write a host application
> > to put the data to guest memnic PMD?
> 
> Yes, basically I made the MEMNIC interface work with DPDK vSwitch.
> 
> By the way, you can mmap() the shm which specified as the ivshmem and put
> the proper data to send a packet to guest PMD.
> I don't have time to make proper code, but can advise you;
> please see common/memnic.h and the memory layout.
> 1) Set magic and version in header on host.
> 2) Initialize PMD on guest.
> 3) Check the reset is 1 and set valid to 1, reset to 0 on host.
> 4) Use uplink area the default block size 4K.
>    Set len and fill ether frame data, then set the status to 2 on host.
>    Guest PMD may receive the packet.
>    Proceed to the next packet block.

Such application should be integrated in memnic repository.
I know Olivier wrote one which could be sent on next week.

-- 
Thomas