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From: Stefano Brivio <sbrivio@redhat.com>
To: David Gibson <david@gibson.dropbear.id.au>
Cc: passt-dev@passt.top
Subject: Re: [PATCH v2 0/4] TCP hash table changes, in preparation for flow table
Date: Wed, 27 Dec 2023 21:23:07 +0100	[thread overview]
Message-ID: <20231227212307.1c0ff049@elisabeth> (raw)
In-Reply-To: <20231207055353.1245933-1-david@gibson.dropbear.id.au>

On Thu,  7 Dec 2023 16:53:49 +1100
David Gibson <david@gibson.dropbear.id.au> wrote:

> I now have an in-progress draft of a unified hash table to go with the
> unified flow table.  This turns out to be easier if we first make some
> preliminary changes to the structure of the TCP hash table.  So, here
> are those.
> 
> Changes since v1:
>  * Use while loops instead of some equivalent, but hard to read for
>    loops for the hash probing.
>  * Switch from probing forwards through hash buckets to probing
>    backwards.  This makes the code closer to the version in Knuth its
>    based on, and thus easier to see if we've made a mistake in
>    adaptation.
>  * Improve the helpers for modular arithmetic in use
>  * Correct an error where we had things exactly the wrong way around
>    when finding entries to move during removal.
>  * Add a patch fixing a conceptual / documentation problem in some
>    adjacent code
> 
> David Gibson (4):
>   tcp: Fix conceptually incorrect byte-order switch in tcp_tap_handler()
>   tcp: Switch hash table to linear probing instead of chaining
>   tcp: Implement hash table with indices rather than pointers
>   tcp: Don't account for hash table size in tcp_hash()

Applied.

-- 
Stefano


      parent reply	other threads:[~2023-12-27 20:23 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-12-07  5:53 [PATCH v2 0/4] TCP hash table changes, in preparation for flow table David Gibson
2023-12-07  5:53 ` [PATCH v2 1/4] tcp: Fix conceptually incorrect byte-order switch in tcp_tap_handler() David Gibson
2023-12-07  5:53 ` [PATCH v2 2/4] tcp: Switch hash table to linear probing instead of chaining David Gibson
2023-12-07  5:53 ` [PATCH v2 3/4] tcp: Implement hash table with indices rather than pointers David Gibson
2023-12-07  5:53 ` [PATCH v2 4/4] tcp: Don't account for hash table size in tcp_hash() David Gibson
2023-12-27 20:23 ` Stefano Brivio [this message]

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