[PATCH net-next 2/2] net: ipv6: don't generate link local address on PUREIP device

rocco.yue rocco.yue at mediatek.com
Thu Feb 4 01:06:01 EST 2021

On Fri, 2021-01-29 at 19:07 -0800, Jakub Kicinski wrote:
> On Thu, 28 Jan 2021 13:58:09 +0800 Rocco Yue wrote:
> > PUREIP device such as ccmni does not need kernel to generate
> > link-local address in any addr_gen_mode, generally, it shall
> > use the IPv6 Interface Identifier, as provided by the GGSN,
> > to create its IPv6 link-ocal Unicast Address.
> > 
> > Signed-off-by: Rocco Yue <rocco.yue at mediatek.com>
> There is no ccmni driver in the tree - is this for non-upstream
> driver?

ccmni is the name of MediaTek mobile interface, currently, it is
non-upstream driver and we plan to upstream these driver codes this

Honestly, the reason why upstreamed this patch is not only that it can
be used by ccmni, but also I observed that the current Linux kernel does
not generate ipv6 link-local address only when addr_gen_mode ==
IN6_ADDR_GEN_MODE_NONE. We hope kernel can add a device type so that no
ipv6 link-local address can be generated in any addr_gen_mode.

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