netdev - Re: [PATCH net v2] tls: Skip tls_append

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Date:   Wed, 27 Apr 2022 22:40:11 +0000
From:   patchwork-bot+netdevbpf@...nel.org
To:     Maxim Mikityanskiy <maximmi@...dia.com>
Cc:     borisp@...dia.com, john.fastabend@...il.com, daniel@...earbox.net,
        kuba@...nel.org, davem@...emloft.net, pabeni@...hat.com,
        tariqt@...dia.com, aviadye@...lanox.com, netdev@...r.kernel.org
Subject: Re: [PATCH net v2] tls: Skip tls_append_frag on zero copy size

Hello:

This patch was applied to netdev/net.git (master)
by Jakub Kicinski <kuba@...nel.org>:

On Tue, 26 Apr 2022 18:49:49 +0300 you wrote:
> Calling tls_append_frag when max_open_record_len == record->len might
> add an empty fragment to the TLS record if the call happens to be on the
> page boundary. Normally tls_append_frag coalesces the zero-sized
> fragment to the previous one, but not if it's on page boundary.
> 
> If a resync happens then, the mlx5 driver posts dump WQEs in
> tx_post_resync_dump, and the empty fragment may become a data segment
> with byte_count == 0, which will confuse the NIC and lead to a CQE
> error.
> 
> [...]

Here is the summary with links:
  - [net,v2] tls: Skip tls_append_frag on zero copy size
    https://git.kernel.org/netdev/net/c/a0df71948e95

You are awesome, thank you!
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