From: Jens Axboe <[email protected]>
To: David Wei <[email protected]>,
[email protected], [email protected]
Cc: Pavel Begunkov <[email protected]>,
Jakub Kicinski <[email protected]>, Paolo Abeni <[email protected]>,
"David S. Miller" <[email protected]>,
Eric Dumazet <[email protected]>,
Jesper Dangaard Brouer <[email protected]>,
David Ahern <[email protected]>,
Mina Almasry <[email protected]>
Subject: Re: [RFC PATCH v3 08/20] io_uring: add mmap support for shared ifq ringbuffers
Date: Wed, 20 Dec 2023 09:13:30 -0700 [thread overview]
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
On 12/19/23 2:03 PM, David Wei wrote:
> From: David Wei <[email protected]>
>
> This patch adds mmap support for ifq rbuf rings. There are two rings and
> a struct io_rbuf_ring that contains the head and tail ptrs into each
> ring.
>
> Just like the io_uring SQ/CQ rings, userspace issues a single mmap call
> using the io_uring fd w/ magic offset IORING_OFF_RBUF_RING. An opaque
> ptr is returned to userspace, which is then expected to use the offsets
> returned in the registration struct to get access to the head/tail and
> rings.
Reviewed-by: Jens Axboe <[email protected]>
--
Jens Axboe
next prev parent reply other threads:[~2023-12-20 16:13 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-12-19 21:03 [RFC PATCH v3 00/20] Zero copy Rx using io_uring David Wei
2023-12-19 21:03 ` [RFC PATCH v3 01/20] net: page_pool: add ppiov mangling helper David Wei
2023-12-19 23:22 ` Mina Almasry
2023-12-19 23:59 ` Pavel Begunkov
2023-12-19 21:03 ` [RFC PATCH v3 02/20] tcp: don't allow non-devmem originated ppiov David Wei
2023-12-19 23:24 ` Mina Almasry
2023-12-20 1:29 ` Pavel Begunkov
2024-01-02 16:11 ` Mina Almasry
2023-12-19 21:03 ` [RFC PATCH v3 03/20] net: page pool: rework ppiov life cycle David Wei
2023-12-19 23:35 ` Mina Almasry
2023-12-20 0:49 ` Pavel Begunkov
2023-12-19 21:03 ` [RFC PATCH v3 04/20] net: enable napi_pp_put_page for ppiov David Wei
2023-12-19 21:03 ` [RFC PATCH v3 05/20] net: page_pool: add ->scrub mem provider callback David Wei
2023-12-19 21:03 ` [RFC PATCH v3 06/20] io_uring: separate header for exported net bits David Wei
2023-12-20 16:01 ` Jens Axboe
2023-12-19 21:03 ` [RFC PATCH v3 07/20] io_uring: add interface queue David Wei
2023-12-20 16:13 ` Jens Axboe
2023-12-20 16:23 ` Pavel Begunkov
2023-12-21 1:44 ` David Wei
2023-12-21 17:57 ` Willem de Bruijn
2023-12-30 16:25 ` Pavel Begunkov
2023-12-31 22:25 ` Willem de Bruijn
2023-12-19 21:03 ` [RFC PATCH v3 08/20] io_uring: add mmap support for shared ifq ringbuffers David Wei
2023-12-20 16:13 ` Jens Axboe [this message]
2023-12-19 21:03 ` [RFC PATCH v3 09/20] netdev: add XDP_SETUP_ZC_RX command David Wei
2023-12-19 21:03 ` [RFC PATCH v3 10/20] io_uring: setup ZC for an Rx queue when registering an ifq David Wei
2023-12-20 16:06 ` Jens Axboe
2023-12-20 16:24 ` Pavel Begunkov
2023-12-19 21:03 ` [RFC PATCH v3 11/20] io_uring/zcrx: implement socket registration David Wei
2023-12-19 21:03 ` [RFC PATCH v3 12/20] io_uring: add ZC buf and pool David Wei
2023-12-19 21:03 ` [RFC PATCH v3 13/20] io_uring: implement pp memory provider for zc rx David Wei
2023-12-19 23:44 ` Mina Almasry
2023-12-20 0:39 ` Pavel Begunkov
2023-12-21 19:36 ` Pavel Begunkov
2023-12-19 21:03 ` [RFC PATCH v3 14/20] net: page pool: add io_uring memory provider David Wei
2023-12-19 23:39 ` Mina Almasry
2023-12-20 0:04 ` Pavel Begunkov
2023-12-19 21:03 ` [RFC PATCH v3 15/20] io_uring: add io_recvzc request David Wei
2023-12-20 16:27 ` Jens Axboe
2023-12-20 17:04 ` Pavel Begunkov
2023-12-20 18:09 ` Jens Axboe
2023-12-21 18:59 ` Pavel Begunkov
2023-12-21 21:32 ` Jens Axboe
2023-12-30 21:15 ` Pavel Begunkov
2023-12-19 21:03 ` [RFC PATCH v3 16/20] net: execute custom callback from napi David Wei
2023-12-19 21:03 ` [RFC PATCH v3 17/20] io_uring/zcrx: add copy fallback David Wei
2023-12-19 21:03 ` [RFC PATCH v3 18/20] veth: add support for io_uring zc rx David Wei
2023-12-19 21:03 ` [RFC PATCH v3 19/20] net: page pool: generalise ppiov dma address get David Wei
2023-12-21 19:51 ` Mina Almasry
2023-12-19 21:03 ` [RFC PATCH v3 20/20] bnxt: enable io_uring zc page pool David Wei
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