This commit adds a new function "bfd_wake_time()" that returns the
next wakeup time associated with the "struct bfd".
Signed-off-by: Alex Wang <al...@nicira.com>
---
lib/bfd.c | 23 +++++++++++++++++++++++
lib/bfd.h | 2 +-
2 files changed, 24 insertions(+), 1 deletion(-)
diff --git a/lib/bfd.c b/lib/bfd.c
index 6c9e920..72444fb 100644
--- a/lib/bfd.c
+++ b/lib/bfd.c
@@ -458,6 +458,29 @@ bfd_wait(const struct bfd *bfd) OVS_EXCLUDED(mutex)
ovs_mutex_unlock(&mutex);
}
+/* Returns the next wake up time. */
+long long int
+bfd_wake_time(const struct bfd *bfd) OVS_EXCLUDED(mutex)
+{
+ long long int retval;
+
+ if (!bfd) {
+ return LLONG_MAX;
+ }
+
+ ovs_mutex_lock(&mutex);
+ if (bfd->flags & FLAG_FINAL) {
+ retval = 0;
+ } else {
+ retval = bfd->next_tx;
+ if (bfd->state > STATE_DOWN) {
+ retval = MIN(bfd->detect_time, retval);
+ }
+ }
+ ovs_mutex_unlock(&mutex);
+ return retval;
+}
+
void
bfd_run(struct bfd *bfd) OVS_EXCLUDED(mutex)
{
diff --git a/lib/bfd.h b/lib/bfd.h
index 0e1e33d..f49a3d6 100644
--- a/lib/bfd.h
+++ b/lib/bfd.h
@@ -49,5 +49,5 @@ void bfd_unref(struct bfd *);
bool bfd_forwarding(const struct bfd *);
void bfd_get_status(const struct bfd *, struct smap *);
void bfd_set_netdev(struct bfd *, const struct netdev *);
-
+long long int bfd_wake_time(const struct bfd *);
#endif /* bfd.h */
--
1.7.9.5
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