netdev - Re: [PATCH v1 09/15] io_uring/zcrx: add interface queue and refill queue

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Message-ID: <1bd0a38c-b59c-4480-9557-b0383bde18d8@gmail.com>
Date: Fri, 11 Oct 2024 23:11:27 +0100
From: Pavel Begunkov <asml.silence@...il.com>
To: Jens Axboe <axboe@...nel.dk>, David Wei <dw@...idwei.uk>,
 io-uring@...r.kernel.org, netdev@...r.kernel.org
Cc: Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
 "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>,
 Jesper Dangaard Brouer <hawk@...nel.org>, David Ahern <dsahern@...nel.org>,
 Mina Almasry <almasrymina@...gle.com>
Subject: Re: [PATCH v1 09/15] io_uring/zcrx: add interface queue and refill
 queue

On 10/9/24 18:50, Jens Axboe wrote:
> On 10/7/24 4:15 PM, David Wei wrote:
>> From: David Wei <davidhwei@...a.com>
...
>> diff --git a/include/uapi/linux/io_uring.h b/include/uapi/linux/io_uring.h
>> index adc2524fd8e3..567cdb89711e 100644
>> --- a/include/uapi/linux/io_uring.h
>> +++ b/include/uapi/linux/io_uring.h
>> @@ -595,6 +597,9 @@ enum io_uring_register_op {
>>   	IORING_REGISTER_NAPI			= 27,
>>   	IORING_UNREGISTER_NAPI			= 28,
>>   
>> +	/* register a netdev hw rx queue for zerocopy */
>> +	IORING_REGISTER_ZCRX_IFQ		= 29,
>> +
> 
> Will need to change as the current tree has moved a bit beyond this. Not
> a huge deal, just an FYI as it obviously impacts userspace too.

Forgot to mention, I'll rebase it for completness for next iteration,
but I expect it'll need staging a branch with net/ changes shared
b/w pulled in both trees and taking io_uring bits after on top or
something similar. We can probably deal with all such io_uring
conflicts at that time.

-- 
Pavel Begunkov