netdev - Re: [PATCH v3 3/4] can: skb:: move can_dropped_invalid_skb and can_skb_headroom

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Date:   Tue, 17 May 2022 19:52:28 +0200
From:   Max Staudt <max@...as.org>
To:     Oliver Hartkopp <socketcan@...tkopp.net>
Cc:     Marc Kleine-Budde <mkl@...gutronix.de>,
        Vincent MAILHOL <mailhol.vincent@...adoo.fr>,
        linux-can@...r.kernel.org, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org
Subject: Re: [PATCH v3 3/4] can: skb:: move can_dropped_invalid_skb and
 can_skb_headroom_valid to skb.c

On Tue, 17 May 2022 17:50:03 +0200
Oliver Hartkopp <socketcan@...tkopp.net> wrote:

> On 17.05.22 17:38, Max Staudt wrote:
> > I'm a bit lost - what would CAN_DEV_SW do?  
> 
> It should be just *one* enabler of building can-dev-ko
> 
> > If it enables can_dropped_invalid_skb(), then the HW drivers would
> > also need to depend on CAN_DEV_SW directly or indirectly, or am I
> > missing something?  
> 
> And CAN_DEV is another enabler that would build the skb stuff from 
> CAN_DEV_SW too (but also the netlink stuff).
> 
> That's what I meant with "some Makefile magic" which is then building 
> the can-dev.ko with the required features depending on CAN_DEV_SW, 
> CAN_DEV, CAN_DEV_RX_OFFLOAD, CAN_CALC_BITTIMING, etc

Ah, I see!
Sounds good :)


Max