Add the support for adding expire value to routes, requested by
Tom Gundersen <t...@jklm.no> for systemd-networkd, and NetworkManager
wants it too.
implement it by adding the new RTNETLINK attribute RTA_EXPIRES.
Signed-off-by: Xin Long <lucien....@gmail.com>
---
include/uapi/linux/rtnetlink.h | 1 +
net/ipv6/route.c | 10 ++++++++++
2 files changed, 11 insertions(+)
diff --git a/include/uapi/linux/rtnetlink.h b/include/uapi/linux/rtnetlink.h
index 123a5af..ca764b5 100644
--- a/include/uapi/linux/rtnetlink.h
+++ b/include/uapi/linux/rtnetlink.h
@@ -311,6 +311,7 @@ enum rtattr_type_t {
RTA_PREF,
RTA_ENCAP_TYPE,
RTA_ENCAP,
+ RTA_EXPIRES,
__RTA_MAX
};
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index c83b6a5..3c8834b 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -2709,6 +2709,7 @@ static const struct nla_policy rtm_ipv6_policy[RTA_MAX+1]
= {
[RTA_PREF] = { .type = NLA_U8 },
[RTA_ENCAP_TYPE] = { .type = NLA_U16 },
[RTA_ENCAP] = { .type = NLA_NESTED },
+ [RTA_EXPIRES] = { .type = NLA_U32 },
};
static int rtm_to_fib6_config(struct sk_buff *skb, struct nlmsghdr *nlh,
@@ -2809,6 +2810,15 @@ static int rtm_to_fib6_config(struct sk_buff *skb,
struct nlmsghdr *nlh,
if (tb[RTA_ENCAP_TYPE])
cfg->fc_encap_type = nla_get_u16(tb[RTA_ENCAP_TYPE]);
+ if (tb[RTA_EXPIRES]) {
+ unsigned long timeout =
addrconf_timeout_fixup(nla_get_u32(tb[RTA_EXPIRES]), HZ);
+
+ if (addrconf_finite_timeout(timeout)) {
+ cfg->fc_expires = jiffies_to_clock_t(timeout * HZ);
+ cfg->fc_flags |= RTF_EXPIRES;
+ }
+ }
+
err = 0;
errout:
return err;
--
2.1.0
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