From cc9da6cc4f56e05cc9e591459fe0192727ff58b3 Mon Sep 17 00:00:00 2001 From: Bjørn Mork Date: Wed, 16 Dec 2015 16:44:38 +0100 Subject: ipv6: addrconf: use stable address generator for ARPHRD_NONE MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Add a new address generator mode, using the stable address generator with an automatically generated secret. This is intended as a default address generator mode for device types with no EUI64 implementation. The new generator is used for ARPHRD_NONE interfaces initially, adding default IPv6 autoconf support to e.g. tun interfaces. If the addrgenmode is set to 'random', either by default or manually, and no stable secret is available, then a random secret is used as input for the stable-privacy address generator. The secret can be read and modified like manually configured secrets, using the proc interface. Modifying the secret will change the addrgen mode to 'stable-privacy' to indicate that it operates on a known secret. Existing behaviour of the 'stable-privacy' mode is kept unchanged. If a known secret is available when the device is created, then the mode will default to 'stable-privacy' as before. The mode can be manually set to 'random' but it will behave exactly like 'stable-privacy' in this case. The secret will not change. Cc: Hannes Frederic Sowa Cc: 吉藤英明 Signed-off-by: Bjørn Mork Acked-by: Hannes Frederic Sowa Signed-off-by: David S. Miller --- include/uapi/linux/if_link.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/uapi/linux/if_link.h') diff --git a/include/uapi/linux/if_link.h b/include/uapi/linux/if_link.h index 2be1dd5a103f..a30b78090594 100644 --- a/include/uapi/linux/if_link.h +++ b/include/uapi/linux/if_link.h @@ -218,6 +218,7 @@ enum in6_addr_gen_mode { IN6_ADDR_GEN_MODE_EUI64, IN6_ADDR_GEN_MODE_NONE, IN6_ADDR_GEN_MODE_STABLE_PRIVACY, + IN6_ADDR_GEN_MODE_RANDOM, }; /* Bridge section */ -- cgit v1.2.3