[PATCH 2/4] net: ipv6: don't generate link local address on PUREIP device
From: Rocco Yue <hidden>
Date: 2021-06-23 11:49:56
Also in:
bpf, linux-arm-kernel, linux-doc, linux-mediatek, lkml
Subsystem:
networking [general], networking [ipv4/ipv6], the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, David Ahern, Ido Schimmel, Linus Torvalds
PUREIP device such as ccmni does not need kernel to generate ipv6 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 <redacted> --- net/ipv6/addrconf.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index 701eb82acd1c..1bfa7eca1314 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c@@ -3339,7 +3339,8 @@ 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 &&
@@ -3352,6 +3353,12 @@ 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)
--
2.18.0