Commit f96ce7a2 authored by Richard Alpe's avatar Richard Alpe Committed by David S. Miller

tipc: add link set to new netlink api

Add TIPC_NL_LINK_SET to the new tipc netlink API.

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

Netlink logical layout of link set message:
-> link
    -> name
    -> properties
        [ -> tolerance ]
        [ -> priority ]
        [ -> window ]
Signed-off-by: default avatarRichard Alpe <richard.alpe@ericsson.com>
Reviewed-by: default avatarErik Hugne <erik.hugne@ericsson.com>
Reviewed-by: default avatarJon Maloy <jon.maloy@ericsson.com>
Acked-by: default avatarYing Xue <ying.xue@windriver.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 7be57fc6
......@@ -48,6 +48,7 @@ enum {
TIPC_NL_SOCK_GET,
TIPC_NL_PUBL_GET,
TIPC_NL_LINK_GET,
TIPC_NL_LINK_SET,
__TIPC_NL_CMD_MAX,
TIPC_NL_CMD_MAX = __TIPC_NL_CMD_MAX - 1
......
......@@ -2441,6 +2441,79 @@ int tipc_nl_parse_link_prop(struct nlattr *prop, struct nlattr *props[])
return 0;
}
int tipc_nl_link_set(struct sk_buff *skb, struct genl_info *info)
{
int err;
int res = 0;
int bearer_id;
char *name;
struct tipc_link *link;
struct tipc_node *node;
struct nlattr *attrs[TIPC_NLA_LINK_MAX + 1];
if (!info->attrs[TIPC_NLA_LINK])
return -EINVAL;
err = nla_parse_nested(attrs, TIPC_NLA_LINK_MAX,
info->attrs[TIPC_NLA_LINK],
tipc_nl_link_policy);
if (err)
return err;
if (!attrs[TIPC_NLA_LINK_NAME])
return -EINVAL;
name = nla_data(attrs[TIPC_NLA_LINK_NAME]);
node = tipc_link_find_owner(name, &bearer_id);
if (!node)
return -EINVAL;
tipc_node_lock(node);
link = node->links[bearer_id];
if (!link) {
res = -EINVAL;
goto out;
}
if (attrs[TIPC_NLA_LINK_PROP]) {
struct nlattr *props[TIPC_NLA_PROP_MAX + 1];
err = tipc_nl_parse_link_prop(attrs[TIPC_NLA_LINK_PROP],
props);
if (err) {
res = err;
goto out;
}
if (props[TIPC_NLA_PROP_TOL]) {
u32 tol;
tol = nla_get_u32(props[TIPC_NLA_PROP_TOL]);
link_set_supervision_props(link, tol);
tipc_link_proto_xmit(link, STATE_MSG, 0, 0, tol, 0, 0);
}
if (props[TIPC_NLA_PROP_PRIO]) {
u32 prio;
prio = nla_get_u32(props[TIPC_NLA_PROP_PRIO]);
link->priority = prio;
tipc_link_proto_xmit(link, STATE_MSG, 0, 0, 0, prio, 0);
}
if (props[TIPC_NLA_PROP_WIN]) {
u32 win;
win = nla_get_u32(props[TIPC_NLA_PROP_WIN]);
tipc_link_set_queue_limits(link, win);
}
}
out:
tipc_node_unlock(node);
return res;
}
int __tipc_nl_add_stats(struct sk_buff *skb, struct tipc_stats *s)
{
int i;
......
......@@ -242,6 +242,7 @@ void tipc_link_retransmit(struct tipc_link *l_ptr,
int tipc_nl_link_dump(struct sk_buff *skb, struct netlink_callback *cb);
int tipc_nl_link_get(struct sk_buff *skb, struct genl_info *info);
int tipc_nl_link_set(struct sk_buff *skb, struct genl_info *info);
int tipc_nl_parse_link_prop(struct nlattr *prop, struct nlattr *props[]);
/*
......
......@@ -144,6 +144,11 @@ static const struct genl_ops tipc_genl_v2_ops[] = {
.doit = tipc_nl_link_get,
.dumpit = tipc_nl_link_dump,
.policy = tipc_nl_policy,
},
{
.cmd = TIPC_NL_LINK_SET,
.doit = tipc_nl_link_set,
.policy = tipc_nl_policy,
}
};
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment