Re: [PATCH io_uring-7.0] io_uring/query: return support for custom rx page size

[Pavel Begunkov <asml.silence@gmail.com>]

On 2/15/26 22:06, Jens Axboe wrote:
> On 2/15/26 2:34 PM, Pavel Begunkov wrote:
>> diff --git a/include/uapi/linux/io_uring.h b/include/uapi/linux/io_uring.h
>> index fc473af6feb4..6750c383a2ab 100644
>> --- a/include/uapi/linux/io_uring.h
>> +++ b/include/uapi/linux/io_uring.h
>> @@ -1090,6 +1090,14 @@ enum zcrx_reg_flags {
>>   	ZCRX_REG_IMPORT	= 1,
>>   };
>>   
>> +enum zcrx_features {
>> +	/*
>> +	 * The user can ask for the desired rx page size by passing the
>> +	 * value in struct io_uring_zcrx_ifq_reg::rx_buf_len.
>> +	 */
>> +	ZCRX_FEATURE_RX_PAGE_SIZE	= 1 << 0,
>> +};
> 
> Well I guess one comment - supposedly ->rx_buf_len is going to be added
> in the future? Because right now it's not there.

# git blame include/uapi/linux/io_uring.h | grep rx_buf_len
795663b4d160b (Pavel Begunkov          2026-01-24 10:36:17 +0000 1115)  __u32   rx_buf_len;

commit 795663b4d160ba652959f1a46381c5e8b1342a53 (tag: for-7.0/io_uring-zcrx-large-buffers-20260206, axboe2/for-7.0/io_uring-zcrx-large-buffers)
Author: Pavel Begunkov <asml.silence@gmail.com>
Date:   Sat Jan 24 10:36:17 2026 +0000

     io_uring/zcrx: implement large rx buffer support


You should've already forwarded it to Linus with
"[GIT PULL] Large buffer support for zcrx".

Different base?

-- 
Pavel Begunkov