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Date: Fri, 29 Oct 2021 17:29:55 +0100
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To: "Min Hu (Connor)" <humin29@huawei.com>, <dev@dpdk.org>
CC: <thomas@monjalon.net>
References: <20211028115230.27047-1-humin29@huawei.com>
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Subject: Re: [dpdk-dev] [PATCH] net/hns3: fix mailbox communication with HW
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On 10/28/2021 12:52 PM, Min Hu (Connor) wrote:
> Mailbox is the communication mechanism between SW and HW. There exist two
> approaches for SW to recongnize mailbox message from HW. One way is using
> match_id, the other is to compare the message code. The two approaches are
> independent and used in different scenarios.
>
> But for the second approache, "next_to_use" should be updated and written
> to HW register. If it not done, HW do not know the position SW steps, then,
> the communication between SW and HW will turn to be failed.
>
> Fixes: dbbbad23e380 ("net/hns3: fix VF handling LSC event in secondary process")
> Cc: stable@dpdk.org
>
> Signed-off-by: Min Hu (Connor) <humin29@huawei.com>
Applied to dpdk-next-net/main, thanks.