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[net-next,v1,4/5] tipc: add a function to get the bearer name

Message ID 1469169768-9214-5-git-send-email-parthasarathy.bhuvaragan@ericsson.com
State Changes Requested, archived
Delegated to: David Miller
Headers show

Commit Message

Parthasarathy Bhuvaragan July 22, 2016, 6:42 a.m. UTC 
Introduce a new function to get the bearer name from
its id. This is used in subsequent commit.

Signed-off-by: Parthasarathy Bhuvaragan <parthasarathy.bhuvaragan@ericsson.com>
Reviewed-by: Jon Maloy <jon.maloy@ericsson.com>
---
 net/tipc/bearer.c | 21 +++++++++++++++++++++
 net/tipc/bearer.h |  1 +
 2 files changed, 22 insertions(+)
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Patch

diff --git a/net/tipc/bearer.c b/net/tipc/bearer.c
index e87731c8998c..6b28f4e27c55 100644
--- a/net/tipc/bearer.c
+++ b/net/tipc/bearer.c
@@ -171,6 +171,27 @@  struct tipc_bearer *tipc_bearer_find(struct net *net, const char *name)
 	return NULL;
 }
 
+/*     tipc_bearer_get_name - get the bearer name from its id.
+ *     @net: network namespace
+ *     @name: a pointer to the buffer where the name will be stored.
+ *     @bearer_id: the id to get the name from.
+ */
+int tipc_bearer_get_name(struct net *net, char *name, u32 bearer_id)
+{
+	struct tipc_net *tn = tipc_net(net);
+	struct tipc_bearer *b;
+
+	if (bearer_id >= MAX_BEARERS)
+		return -EINVAL;
+
+	b = rtnl_dereference(tn->bearer_list[bearer_id]);
+	if (!b)
+		return -EINVAL;
+
+	strcpy(name, b->name);
+	return 0;
+}
+
 void tipc_bearer_add_dest(struct net *net, u32 bearer_id, u32 dest)
 {
 	struct tipc_net *tn = net_generic(net, tipc_net_id);
diff --git a/net/tipc/bearer.h b/net/tipc/bearer.h
index 0d337c7b6fad..ddaf51856414 100644
--- a/net/tipc/bearer.h
+++ b/net/tipc/bearer.h
@@ -197,6 +197,7 @@  int tipc_l2_send_msg(struct net *net, struct sk_buff *buf,
 void tipc_bearer_add_dest(struct net *net, u32 bearer_id, u32 dest);
 void tipc_bearer_remove_dest(struct net *net, u32 bearer_id, u32 dest);
 struct tipc_bearer *tipc_bearer_find(struct net *net, const char *name);
+int tipc_bearer_get_name(struct net *net, char *name, u32 bearer_id);
 struct tipc_media *tipc_media_find(const char *name);
 int tipc_bearer_setup(void);
 void tipc_bearer_cleanup(void);