Commit a97d97ba authored by Hangbin Liu's avatar Hangbin Liu Committed by David S. Miller

geneve: allow to clear ttl inherit

As Michal remaind, we should allow to clear ttl inherit. Then we will
have three states:

1. set the flag, and do ttl inherit.
2. do not set the flag, use configured ttl value, or default ttl (0) if
   not set.
3. disable ttl inherit, use previous configured ttl value, or default ttl (0).

Fixes: 52d0d404 ("geneve: add ttl inherit support")
CC: Michal Kubecek <mkubecek@suse.cz>
Signed-off-by: default avatarHangbin Liu <liuhangbin@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 5a781ccb
......@@ -1325,11 +1325,15 @@ static int geneve_nl2info(struct nlattr *tb[], struct nlattr *data[],
info->key.tun_id = tunid;
}
if (data[IFLA_GENEVE_TTL])
if (data[IFLA_GENEVE_TTL_INHERIT]) {
if (nla_get_u8(data[IFLA_GENEVE_TTL_INHERIT]))
*ttl_inherit = true;
else
*ttl_inherit = false;
} else if (data[IFLA_GENEVE_TTL]) {
info->key.ttl = nla_get_u8(data[IFLA_GENEVE_TTL]);
if (data[IFLA_GENEVE_TTL_INHERIT])
*ttl_inherit = true;
*ttl_inherit = false;
}
if (data[IFLA_GENEVE_TOS])
info->key.tos = nla_get_u8(data[IFLA_GENEVE_TOS]);
......
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