I suspect that this makes it easier to make sure that a netdev stays open
as long as needed in some cases where a module needs access to a netdev
opened by some higher-level module.
CC: Ethan Jackson <et...@nicira.com>
Signed-off-by: Ben Pfaff <b...@nicira.com>
---
lib/netdev.c | 11 +++++++++++
lib/netdev.h | 1 +
2 files changed, 12 insertions(+), 0 deletions(-)
diff --git a/lib/netdev.c b/lib/netdev.c
index 5c2e9f5..5aae01c 100644
--- a/lib/netdev.c
+++ b/lib/netdev.c
@@ -277,6 +277,17 @@ netdev_open(const char *name, const char *type, struct
netdev **netdevp)
return 0;
}
+/* Returns a reference to 'netdev_' for the caller to own. */
+struct netdev *
+netdev_ref(const struct netdev *netdev_)
+{
+ struct netdev *netdev = CONST_CAST(struct netdev *, netdev_);
+
+ ovs_assert(netdev->ref_cnt > 0);
+ netdev->ref_cnt++;
+ return netdev;
+}
+
/* Reconfigures the device 'netdev' with 'args'. 'args' may be empty
* or NULL if none are needed. */
int
diff --git a/lib/netdev.h b/lib/netdev.h
index c7f3c1d..b1cc319 100644
--- a/lib/netdev.h
+++ b/lib/netdev.h
@@ -110,6 +110,7 @@ bool netdev_is_reserved_name(const char *name);
/* Open and close. */
int netdev_open(const char *name, const char *type, struct netdev **);
+struct netdev *netdev_ref(const struct netdev *);
void netdev_close(struct netdev *);
void netdev_parse_name(const char *netdev_name, char **name, char **type);
--
1.7.2.5
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