From: Leon Romanovsky <leon@kernel•org>
To: Haiyang Zhang <haiyangz@microsoft•com>
Cc: linux-hyperv@vger•kernel.org, netdev@vger•kernel.org,
decui@microsoft•com, kys@microsoft•com, paulros@microsoft•com,
olaf@aepfle•de, vkuznets@redhat•com, davem@davemloft•net,
wei.liu@kernel•org, edumazet@google•com, kuba@kernel•org,
pabeni@redhat•com, longli@microsoft•com,
ssengar@linux•microsoft.com, linux-rdma@vger•kernel.org,
daniel@iogearbox•net, john.fastabend@gmail•com,
bpf@vger•kernel.org, ast@kernel•org, sharmaajay@microsoft•com,
hawk@kernel•org, linux-kernel@vger•kernel.org
Subject: Re: [PATCH V3,net-next, 2/4] net: mana: Refactor RX buffer allocation code to prepare for various MTU
Date: Thu, 13 Apr 2023 16:04:28 +0300 [thread overview]
Message-ID: <20230413130428.GO17993@unreal> (raw)
In-Reply-To: <1681334163-31084-3-git-send-email-haiyangz@microsoft.com>
On Wed, Apr 12, 2023 at 02:16:01PM -0700, Haiyang Zhang wrote:
> Move out common buffer allocation code from mana_process_rx_cqe() and
> mana_alloc_rx_wqe() to helper functions.
> Refactor related variables so they can be changed in one place, and buffer
> sizes are in sync.
>
> Signed-off-by: Haiyang Zhang <haiyangz@microsoft•com>
> Reviewed-by: Jesse Brandeburg <jesse.brandeburg@intel•com>
> ---
> V3:
> Refectored to multiple patches for readability. Suggested by Jacob Keller.
>
> V2:
> Refectored to multiple patches for readability. Suggested by Yunsheng Lin.
>
> ---
> drivers/net/ethernet/microsoft/mana/mana_en.c | 154 ++++++++++--------
> include/net/mana/mana.h | 6 +-
> 2 files changed, 91 insertions(+), 69 deletions(-)
<...>
> +static void *mana_get_rxfrag(struct mana_rxq *rxq, struct device *dev,
> + dma_addr_t *da, bool is_napi)
> +{
> + struct page *page;
> + void *va;
> +
> + /* Reuse XDP dropped page if available */
> + if (rxq->xdp_save_va) {
> + va = rxq->xdp_save_va;
> + rxq->xdp_save_va = NULL;
> + } else {
> + page = dev_alloc_page();
Documentation/networking/page_pool.rst
10 Basic use involves replacing alloc_pages() calls with the
11 page_pool_alloc_pages() call. Drivers should use page_pool_dev_alloc_pages()
12 replacing dev_alloc_pages().
General question, is this sentence applicable to all new code or only
for XDP related paths?
Thanks
next prev parent reply other threads:[~2023-04-13 13:04 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-04-12 21:15 [PATCH V3,net-next, 0/4] net: mana: Add support for jumbo frame Haiyang Zhang
2023-04-12 21:16 ` [PATCH V3,net-next, 1/4] net: mana: Use napi_build_skb in RX path Haiyang Zhang
2023-04-12 21:16 ` [PATCH V3,net-next, 2/4] net: mana: Refactor RX buffer allocation code to prepare for various MTU Haiyang Zhang
2023-04-13 13:04 ` Leon Romanovsky [this message]
2023-04-13 14:03 ` Haiyang Zhang
2023-04-13 16:30 ` Leon Romanovsky
2023-04-13 16:40 ` Jakub Kicinski
2023-04-13 16:59 ` Leon Romanovsky
2023-04-13 17:01 ` Jakub Kicinski
2023-04-15 2:04 ` Jakub Kicinski
2023-04-15 14:09 ` Haiyang Zhang
2023-04-12 21:16 ` [PATCH V3,net-next, 3/4] net: mana: Enable RX path to handle various MTU sizes Haiyang Zhang
2023-04-15 2:06 ` Jakub Kicinski
2023-04-15 14:25 ` Haiyang Zhang
2023-04-17 17:52 ` Jakub Kicinski
2023-04-17 19:52 ` Haiyang Zhang
2023-04-12 21:16 ` [PATCH V3,net-next, 4/4] net: mana: Add support for jumbo frame Haiyang Zhang
2023-04-15 2:08 ` [PATCH V3,net-next, 0/4] " Jakub Kicinski
2023-04-15 14:11 ` Haiyang Zhang
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