Re: [PATCH v5 3/5] can: do not copy the payload of RTR frames
From: Yasushi SHOJI <yashi@spacecubics.com>
Date: 2021-12-10 08:57:49
Also in:
linux-can, linux-sunxi, lkml, netdev
From: Yasushi SHOJI <yashi@spacecubics.com>
Date: 2021-12-10 08:57:49
Also in:
linux-can, linux-sunxi, lkml, netdev
Hi Vincent, On Tue, Dec 7, 2021 at 9:16 PM Vincent Mailhol [off-list ref] wrote:
The actual payload length of the CAN Remote Transmission Request (RTR) frames is always 0, i.e. nothing is transmitted on the wire. However, those RTR frames still use the DLC to indicate the length of the requested frame. For this reason, it is incorrect to copy the payload of RTR frames (the payload buffer would only contain garbage data). This patch encapsulates the payload copy in a check toward the RTR flag. CC: Yasushi SHOJI <yashi@spacecubics.com> Signed-off-by: Vincent Mailhol <redacted>
It works and LGTM.
Tested-by: Yasushi SHOJI <yashi@spacecubics.com>
--
yashi
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