HI Loic On Thu, 2022-12-01 at 10:56 +0100, Loic Poulain wrote: > On Thu, 24 Nov 2022 at 08:47, <haozhe.chang@xxxxxxxxxxxx> wrote: > > > > From: haozhe chang <haozhe.chang@xxxxxxxxxxxx> > > > > wwan_port_fops_write inputs the SKB parameter to the TX callback of > > the WWAN device driver. However, the WWAN device (e.g., t7xx) may > > have an MTU less than the size of SKB, causing the TX buffer to be > > sliced and copied once more in the WWAN device driver. > > > > This patch implements the slicing in the WWAN subsystem and gives > > the WWAN devices driver the option to slice(by frag_len) or not. By > > doing so, the additional memory copy is reduced. > > > > Meanwhile, this patch gives WWAN devices driver the option to > > reserve > > headroom in fragments for the device-specific metadata. > > > > Signed-off-by: haozhe chang <haozhe.chang@xxxxxxxxxxxx> > > Reviewed-by: Loic Poulain <loic.poulain@xxxxxxxxxx> I have submitted patch V6 to add a reviewer, do you have any other suggestions about the patch?
