tipc: add bearer set to new netlink api

Add TIPC_NL_BEARER_SET command to the new tipc netlink API.

This command can set one or more link properties for a particular
bearer.

Netlink logical layout of bearer set message:
-> bearer
    -> name
    -> link properties
        [ -> tolerance ]
        [ -> priority ]
        [ -> window ]

Signed-off-by: Richard Alpe <richard.alpe@ericsson.com>
Reviewed-by: Erik Hugne <erik.hugne@ericsson.com>
Reviewed-by: Jon Maloy <jon.maloy@ericsson.com>
Acked-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/include/uapi/linux/tipc_netlink.h b/include/uapi/linux/tipc_netlink.h
index 249ec7e..f446fba 100644 (file)
--- a/include/uapi/linux/tipc_netlink.h
+++ b/include/uapi/linux/tipc_netlink.h
@@ -44,6 +44,7 @@ enum {
        TIPC_NL_BEARER_DISABLE,
        TIPC_NL_BEARER_ENABLE,
        TIPC_NL_BEARER_GET,
+       TIPC_NL_BEARER_SET,
 
        __TIPC_NL_CMD_MAX,
        TIPC_NL_CMD_MAX = __TIPC_NL_CMD_MAX - 1

diff --git a/net/tipc/bearer.c b/net/tipc/bearer.c
index d49b8c2..6d547d0 100644 (file)
--- a/net/tipc/bearer.c
+++ b/net/tipc/bearer.c
@@ -849,3 +849,52 @@ int tipc_nl_bearer_enable(struct sk_buff *skb, struct genl_info *info)
 
        return 0;
 }
+
+int tipc_nl_bearer_set(struct sk_buff *skb, struct genl_info *info)
+{
+       int err;
+       char *name;
+       struct tipc_bearer *b;
+       struct nlattr *attrs[TIPC_NLA_BEARER_MAX + 1];
+
+       if (!info->attrs[TIPC_NLA_BEARER])
+               return -EINVAL;
+
+       err = nla_parse_nested(attrs, TIPC_NLA_BEARER_MAX,
+                              info->attrs[TIPC_NLA_BEARER],
+                              tipc_nl_bearer_policy);
+       if (err)
+               return err;
+
+       if (!attrs[TIPC_NLA_BEARER_NAME])
+               return -EINVAL;
+       name = nla_data(attrs[TIPC_NLA_BEARER_NAME]);
+
+       rtnl_lock();
+       b = tipc_bearer_find(name);
+       if (!b) {
+               rtnl_unlock();
+               return -EINVAL;
+       }
+
+       if (attrs[TIPC_NLA_BEARER_PROP]) {
+               struct nlattr *props[TIPC_NLA_PROP_MAX + 1];
+
+               err = tipc_nl_parse_link_prop(attrs[TIPC_NLA_BEARER_PROP],
+                                             props);
+               if (err) {
+                       rtnl_unlock();
+                       return err;
+               }
+
+               if (props[TIPC_NLA_PROP_TOL])
+                       b->tolerance = nla_get_u32(props[TIPC_NLA_PROP_TOL]);
+               if (props[TIPC_NLA_PROP_PRIO])
+                       b->priority = nla_get_u32(props[TIPC_NLA_PROP_PRIO]);
+               if (props[TIPC_NLA_PROP_WIN])
+                       b->window = nla_get_u32(props[TIPC_NLA_PROP_WIN]);
+       }
+       rtnl_unlock();
+
+       return 0;
+}

diff --git a/net/tipc/bearer.h b/net/tipc/bearer.h
index 2d07e35..c6cf9df 100644 (file)
--- a/net/tipc/bearer.h
+++ b/net/tipc/bearer.h
@@ -182,6 +182,7 @@ int tipc_nl_bearer_disable(struct sk_buff *skb, struct genl_info *info);
 int tipc_nl_bearer_enable(struct sk_buff *skb, struct genl_info *info);
 int tipc_nl_bearer_dump(struct sk_buff *skb, struct netlink_callback *cb);
 int tipc_nl_bearer_get(struct sk_buff *skb, struct genl_info *info);
+int tipc_nl_bearer_set(struct sk_buff *skb, struct genl_info *info);
 
 int tipc_media_set_priority(const char *name, u32 new_value);
 int tipc_media_set_window(const char *name, u32 new_value);

diff --git a/net/tipc/netlink.c b/net/tipc/netlink.c
index 0c00422..a529131 100644 (file)
--- a/net/tipc/netlink.c
+++ b/net/tipc/netlink.c
@@ -118,6 +118,11 @@ static const struct genl_ops tipc_genl_v2_ops[] = {
                .doit   = tipc_nl_bearer_get,
                .dumpit = tipc_nl_bearer_dump,
                .policy = tipc_nl_policy,
+       },
+       {
+               .cmd    = TIPC_NL_BEARER_SET,
+               .doit   = tipc_nl_bearer_set,
+               .policy = tipc_nl_policy,
        }
 };