From: Pavel Begunkov <[email protected]>
To: Jakub Kicinski <[email protected]>, David Wei <[email protected]>
Cc: [email protected], [email protected],
Jens Axboe <[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]>,
Stanislav Fomichev <[email protected]>,
Joe Damato <[email protected]>,
Pedro Tammela <[email protected]>
Subject: Re: [PATCH net-next v10 18/22] io_uring/zcrx: set pp memory provider for an rx queue
Date: Thu, 16 Jan 2025 02:27:29 +0000 [thread overview]
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
On 1/16/25 01:12, Jakub Kicinski wrote:
> On Wed, 8 Jan 2025 14:06:39 -0800 David Wei wrote:
>> + ASSERT_RTNL();
>> +
>> + if (ifq_idx >= dev->num_rx_queues)
>
> _real_ rx queues.
>
> We don't allow configuring disabled queues today.
ok
>
>> + return -EINVAL;
>> + ifq_idx = array_index_nospec(ifq_idx, dev->num_rx_queues);
>> +
>> + rxq = __netif_get_rx_queue(ifq->dev, ifq_idx);
>> + if (rxq->mp_params.mp_priv)
>> + return -EEXIST;
>> +
>> + ifq->if_rxq = ifq_idx;
>> + rxq->mp_params.mp_ops = &io_uring_pp_zc_ops;
>> + rxq->mp_params.mp_priv = ifq;
>> + ret = netdev_rx_queue_restart(ifq->dev, ifq->if_rxq);
>> + if (ret)
>> + goto fail;
>
> Hm. Could you move all this (and the rtnl_lock() in the caller)
> to a helper under net/ ? Or does something io_uring-y here need
fine
> to be protected by rtnl_lock()?
no, io_uring doesn't rely on it
--
Pavel Begunkov
next prev parent reply other threads:[~2025-01-16 2:26 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-01-08 22:06 [PATCH net-next v10 00/22] io_uring zero copy rx David Wei
2025-01-08 22:06 ` [PATCH net-next v10 01/22] net: make page_pool_ref_netmem work with net iovs David Wei
2025-01-16 0:30 ` Jakub Kicinski
2025-01-16 2:12 ` Pavel Begunkov
2025-01-16 2:48 ` Jakub Kicinski
2025-01-16 16:45 ` Pavel Begunkov
2025-01-08 22:06 ` [PATCH net-next v10 02/22] net: page_pool: don't cast mp param to devmem David Wei
2025-01-08 22:06 ` [PATCH net-next v10 03/22] net: prefix devmem specific helpers David Wei
2025-01-08 22:06 ` [PATCH net-next v10 04/22] net: generalise net_iov chunk owners David Wei
2025-01-16 0:31 ` Jakub Kicinski
2025-01-08 22:06 ` [PATCH net-next v10 05/22] net: page pool: export page_pool_set_dma_addr_netmem() David Wei
2025-01-16 0:35 ` Jakub Kicinski
2025-01-16 0:39 ` Jakub Kicinski
2025-01-16 2:12 ` Pavel Begunkov
2025-01-08 22:06 ` [PATCH net-next v10 06/22] net: page_pool: create hooks for custom memory providers David Wei
2025-01-16 0:44 ` Jakub Kicinski
2025-01-16 2:25 ` Pavel Begunkov
2025-01-08 22:06 ` [PATCH net-next v10 07/22] netdev: add io_uring memory provider info David Wei
2025-01-16 0:45 ` Jakub Kicinski
2025-01-08 22:06 ` [PATCH net-next v10 08/22] net: page_pool: add callback for mp info printing David Wei
2025-01-16 0:46 ` Jakub Kicinski
2025-01-08 22:06 ` [PATCH net-next v10 09/22] net: page_pool: add a mp hook to unregister_netdevice* David Wei
2025-01-08 22:06 ` [PATCH net-next v10 10/22] net: prepare for non devmem TCP memory providers David Wei
2025-01-08 22:06 ` [PATCH net-next v10 11/22] net: page_pool: add memory provider helpers David Wei
2025-01-16 0:49 ` Jakub Kicinski
2025-01-08 22:06 ` [PATCH net-next v10 12/22] io_uring/zcrx: add interface queue and refill queue David Wei
2025-01-08 22:06 ` [PATCH net-next v10 13/22] io_uring/zcrx: add io_zcrx_area David Wei
2025-01-08 22:06 ` [PATCH net-next v10 14/22] io_uring/zcrx: grab a net device David Wei
2025-01-16 1:06 ` Jakub Kicinski
2025-01-16 2:33 ` Pavel Begunkov
2025-01-16 3:12 ` Jakub Kicinski
2025-01-16 16:46 ` Pavel Begunkov
2025-01-08 22:06 ` [PATCH net-next v10 15/22] io_uring/zcrx: implement zerocopy receive pp memory provider David Wei
2025-01-13 22:32 ` Jens Axboe
2025-01-08 22:06 ` [PATCH net-next v10 16/22] io_uring/zcrx: dma-map area for the device David Wei
2025-01-08 22:06 ` [PATCH net-next v10 17/22] io_uring/zcrx: add io_recvzc request David Wei
2025-01-08 22:06 ` [PATCH net-next v10 18/22] io_uring/zcrx: set pp memory provider for an rx queue David Wei
2025-01-16 1:12 ` Jakub Kicinski
2025-01-16 2:27 ` Pavel Begunkov [this message]
2025-01-08 22:06 ` [PATCH net-next v10 19/22] io_uring/zcrx: throttle receive requests David Wei
2025-01-08 22:06 ` [PATCH net-next v10 20/22] io_uring/zcrx: add copy fallback David Wei
2025-01-08 22:06 ` [PATCH net-next v10 21/22] net: add documentation for io_uring zcrx David Wei
2025-01-08 22:06 ` [PATCH net-next v10 22/22] io_uring/zcrx: add selftest David Wei
2025-01-09 17:33 ` Stanislav Fomichev
2025-01-09 17:50 ` David Wei
2025-01-13 21:32 ` Pavel Begunkov
2025-01-14 0:11 ` Stanislav Fomichev
2025-01-16 0:53 ` Jakub Kicinski
2025-01-16 22:58 ` David Wei
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
[email protected] \
[email protected] \
[email protected] \
[email protected] \
[email protected] \
[email protected] \
[email protected] \
[email protected] \
[email protected] \
[email protected] \
[email protected] \
[email protected] \
[email protected] \
[email protected] \
[email protected] \
[email protected] \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox