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Date: Thu, 17 Sep 2020 16:38:24 -0700 (PDT) From: David Miller <davem@...emloft.net> To: xie.he.0141@...il.com Cc: kuba@...nel.org, netdev@...r.kernel.org, linux-kernel@...r.kernel.org, ms@....tdt.de Subject: Re: [PATCH net] drivers/net/wan/lapbether: Make skb->protocol consistent with the header From: Xie He <xie.he.0141@...il.com> Date: Wed, 16 Sep 2020 09:49:18 -0700 > This driver is a virtual driver stacked on top of Ethernet interfaces. > > When this driver transmits data on the Ethernet device, the skb->protocol > setting is inconsistent with the Ethernet header prepended to the skb. > > This causes a user listening on the Ethernet interface with an AF_PACKET > socket, to see different sll_protocol values for incoming and outgoing > frames, because incoming frames would have this value set by parsing the > Ethernet header. > > This patch changes the skb->protocol value for outgoing Ethernet frames, > making it consistent with the Ethernet header prepended. This makes a > user listening on the Ethernet device with an AF_PACKET socket, to see > the same sll_protocol value for incoming and outgoing frames. > > Cc: Martin Schiller <ms@....tdt.de> > Signed-off-by: Xie He <xie.he.0141@...il.com> Applied, thank you.
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