On 1/29/22 5:50 AM, Ammar Faizi wrote: > Hello, > > This patchset adds sendto(2) and recvfrom(2) support for io_uring. It > also addresses an issue in the liburing GitHub repository [1]. > > ## Motivations: > > 1) By using `sendto()` and `recvfrom()` we can make the submission > simpler compared to always using `sendmsg()` and `recvmsg()` from > the userspace. Especially for UDP socket. > > 2) There is a historical patch that tried to add the same > functionality, but did not end up being applied. [2] As far as I can tell, the only win from sendto/recvfrom is that we can handle async offload a bit cheaper compared to sendmsg/recvmsg. Is this enough to warrant adding them separately? I don't know, which is why this has been somewhat stalled for a while. Maybe you have done some testing and have numbers (or other reasons) to back up the submission? There's not a whole lot of justification in this patchset. -- Jens Axboe
