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authorRichard Alpe <richard.alpe@ericsson.com>2015-05-06 13:58:55 +0200
committerDavid S. Miller <davem@davemloft.net>2015-05-09 16:40:02 -0400
commit670f4f8818ee54d0c1831e3165dadd5b8a3f713e (patch)
tree61d37ad05026b8302cc2a286a4d9ce93ab641f82 /net/tipc
parentc3d6fb85b2ed6a57b57b322a470b3b4eefb34fb7 (diff)
tipc: add broadcast link window set/get to nl api
Add the ability to get or set the broadcast link window through the new netlink API. The functionality was unintentionally missing from the new netlink API. Adding this means that we also fix the breakage in the old API when coming through the compat layer. Fixes: 37e2d4843f9e (tipc: convert legacy nl link prop set to nl compat) Reported-by: Tomi Ollila <tomi.ollila@iki.fi> Signed-off-by: Richard Alpe <richard.alpe@ericsson.com> Reviewed-by: Erik Hugne <erik.hugne@ericsson.com> Reviewed-by: Ying Xue <ying.xue@windriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/tipc')
-rw-r--r--net/tipc/bcast.c21
-rw-r--r--net/tipc/bcast.h1
-rw-r--r--net/tipc/link.c66
3 files changed, 58 insertions, 30 deletions
diff --git a/net/tipc/bcast.c b/net/tipc/bcast.c
index c5cbdcb1f0b5..3e18fc6c7877 100644
--- a/net/tipc/bcast.c
+++ b/net/tipc/bcast.c
@@ -866,6 +866,27 @@ int tipc_bclink_set_queue_limits(struct net *net, u32 limit)
return 0;
}
+int tipc_nl_bc_link_set(struct net *net, struct nlattr *attrs[])
+{
+ int err;
+ u32 win;
+ struct nlattr *props[TIPC_NLA_PROP_MAX + 1];
+
+ if (!attrs[TIPC_NLA_LINK_PROP])
+ return -EINVAL;
+
+ err = tipc_nl_parse_link_prop(attrs[TIPC_NLA_LINK_PROP], props);
+ if (err)
+ return err;
+
+ if (!props[TIPC_NLA_PROP_WIN])
+ return -EOPNOTSUPP;
+
+ win = nla_get_u32(props[TIPC_NLA_PROP_WIN]);
+
+ return tipc_bclink_set_queue_limits(net, win);
+}
+
int tipc_bclink_init(struct net *net)
{
struct tipc_net *tn = net_generic(net, tipc_net_id);
diff --git a/net/tipc/bcast.h b/net/tipc/bcast.h
index 4bdc12277d33..3c290a48f720 100644
--- a/net/tipc/bcast.h
+++ b/net/tipc/bcast.h
@@ -131,6 +131,7 @@ uint tipc_bclink_get_mtu(void);
int tipc_bclink_xmit(struct net *net, struct sk_buff_head *list);
void tipc_bclink_wakeup_users(struct net *net);
int tipc_nl_add_bc_link(struct net *net, struct tipc_nl_msg *msg);
+int tipc_nl_bc_link_set(struct net *net, struct nlattr *attrs[]);
void tipc_bclink_input(struct net *net);
#endif
diff --git a/net/tipc/link.c b/net/tipc/link.c
index 43a515dc97b0..374d52335168 100644
--- a/net/tipc/link.c
+++ b/net/tipc/link.c
@@ -1893,6 +1893,9 @@ int tipc_nl_link_set(struct sk_buff *skb, struct genl_info *info)
name = nla_data(attrs[TIPC_NLA_LINK_NAME]);
+ if (strcmp(name, tipc_bclink_name) == 0)
+ return tipc_nl_bc_link_set(net, attrs);
+
node = tipc_link_find_owner(net, name, &bearer_id);
if (!node)
return -EINVAL;
@@ -2175,50 +2178,53 @@ out:
int tipc_nl_link_get(struct sk_buff *skb, struct genl_info *info)
{
struct net *net = genl_info_net(info);
- struct sk_buff *ans_skb;
struct tipc_nl_msg msg;
- struct tipc_link *link;
- struct tipc_node *node;
char *name;
- int bearer_id;
int err;
+ msg.portid = info->snd_portid;
+ msg.seq = info->snd_seq;
+
if (!info->attrs[TIPC_NLA_LINK_NAME])
return -EINVAL;
-
name = nla_data(info->attrs[TIPC_NLA_LINK_NAME]);
- node = tipc_link_find_owner(net, name, &bearer_id);
- if (!node)
- return -EINVAL;
- ans_skb = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
- if (!ans_skb)
+ msg.skb = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
+ if (!msg.skb)
return -ENOMEM;
- msg.skb = ans_skb;
- msg.portid = info->snd_portid;
- msg.seq = info->snd_seq;
-
- tipc_node_lock(node);
- link = node->links[bearer_id];
- if (!link) {
- err = -EINVAL;
- goto err_out;
- }
-
- err = __tipc_nl_add_link(net, &msg, link, 0);
- if (err)
- goto err_out;
+ if (strcmp(name, tipc_bclink_name) == 0) {
+ err = tipc_nl_add_bc_link(net, &msg);
+ if (err) {
+ nlmsg_free(msg.skb);
+ return err;
+ }
+ } else {
+ int bearer_id;
+ struct tipc_node *node;
+ struct tipc_link *link;
- tipc_node_unlock(node);
+ node = tipc_link_find_owner(net, name, &bearer_id);
+ if (!node)
+ return -EINVAL;
- return genlmsg_reply(ans_skb, info);
+ tipc_node_lock(node);
+ link = node->links[bearer_id];
+ if (!link) {
+ tipc_node_unlock(node);
+ nlmsg_free(msg.skb);
+ return -EINVAL;
+ }
-err_out:
- tipc_node_unlock(node);
- nlmsg_free(ans_skb);
+ err = __tipc_nl_add_link(net, &msg, link, 0);
+ tipc_node_unlock(node);
+ if (err) {
+ nlmsg_free(msg.skb);
+ return err;
+ }
+ }
- return err;
+ return genlmsg_reply(msg.skb, info);
}
int tipc_nl_link_reset_stats(struct sk_buff *skb, struct genl_info *info)

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