| Message ID | 20210128055809.31199-1-rocco.yue@mediatek.com |
|---|---|
| State | New |
| Headers | show |
| Series | None | expand |
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@mediatek.com> There is no ccmni driver in the tree - is this for non-upstream driver?
On Tue, 23 Feb 2021 10:03:11 +0800 rocco.yue wrote: > On Thu, 2021-02-04 at 14:06 +0800, rocco.yue wrote: > > On Fri, 2021-01-29 at 19:07 -0800, Jakub Kicinski wrote: > > > On Thu, 28 Jan 2021 13:58:09 +0800 Rocco Yue wrote: > [...] > > > > > > 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 > > year. > > > > 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. > > gentle ping for this patch set. We don't merge patches without upstream users.
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index 9edc5bb2d531..5e8134d3e704 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -3337,7 +3337,8 @@ static void addrconf_dev_config(struct net_device *dev) (dev->type != ARPHRD_IPGRE) && (dev->type != ARPHRD_TUNNEL) && (dev->type != ARPHRD_NONE) && - (dev->type != ARPHRD_RAWIP)) { + (dev->type != ARPHRD_RAWIP) && + (dev->type != ARPHRD_PUREIP)) { /* Alas, we support only Ethernet autoconfiguration. */ idev = __in6_dev_get(dev); if (!IS_ERR_OR_NULL(idev) && dev->flags & IFF_UP && @@ -3350,6 +3351,12 @@ static void addrconf_dev_config(struct net_device *dev) if (IS_ERR(idev)) return; + /* this device type doesn't need to generate + * link-local address in any addr_gen_mode + */ + if (dev->type == ARPHRD_PUREIP) + return; + /* this device type has no EUI support */ if (dev->type == ARPHRD_NONE && idev->cnf.addr_gen_mode == IN6_ADDR_GEN_MODE_EUI64)
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@mediatek.com> --- net/ipv6/addrconf.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-)