From: David Miller <davem@davemloft.net>
To: xie.he.0141@gmail.com
Cc: kuba@kernel.org, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-x25@vger.kernel.org,
willemdebruijn.kernel@gmail.com, ms@dev.tdt.de
Subject: Re: [PATCH net] drivers/net/wan/x25_asy: Added needed_headroom and a skb->len check
Date: Tue, 11 Aug 2020 10:32:25 -0700 (PDT) [thread overview]
Message-ID: <20200811.103225.204767763010456044.davem@davemloft.net> (raw)
In-Reply-To: <20200809023548.684217-1-xie.he.0141@gmail.com>
From: Xie He <xie.he.0141@gmail.com>
Date: Sat, 8 Aug 2020 19:35:48 -0700
> 1. Added a skb->len check
>
> This driver expects upper layers to include a pseudo header of 1 byte
> when passing down a skb for transmission. This driver will read this
> 1-byte header. This patch added a skb->len check before reading the
> header to make sure the header exists.
>
> 2. Added needed_headroom
>
> When this driver transmits data,
> first this driver will remove a pseudo header of 1 byte,
> then the lapb module will prepend the LAPB header of 2 or 3 bytes.
> So the value of needed_headroom in this driver should be 3 - 1.
>
> Cc: Willem de Bruijn <willemdebruijn.kernel@gmail.com>
> Cc: Martin Schiller <ms@dev.tdt.de>
> Signed-off-by: Xie He <xie.he.0141@gmail.com>
Applied, thank you.
next prev parent reply other threads:[~2020-08-11 17:32 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-09 2:35 [PATCH net] drivers/net/wan/x25_asy: Added needed_headroom and a skb->len check Xie He
2020-08-09 9:12 ` Willem de Bruijn
2020-08-09 18:08 ` Xie He
2020-08-10 7:20 ` Willem de Bruijn
2020-08-10 19:50 ` Xie He
2020-08-11 10:50 ` Willem de Bruijn
2020-08-12 2:26 ` Xie He
2020-08-11 17:32 ` David Miller [this message]
2020-08-12 2:30 ` Xie He
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