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Date: Thu, 11 Sep 2014 10:29:19 +0200 From: <richard.alpe@...csson.com> To: <netdev@...r.kernel.org> CC: <tipc-discussion@...ts.sourceforge.net>, Richard Alpe <richard.alpe@...csson.com> Subject: [PATCH net-next 06/14] tipc: add link set to new netlink api From: Richard Alpe <richard.alpe@...csson.com> 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: Richard Alpe <richard.alpe@...csson.com> Reviewed-by: Erik Hugne <erik.hugne@...csson.com> Reviewed-by: Jon Maloy <jon.maloy@...csson.com> Acked-by: Ying Xue <ying.xue@...driver.com> --- include/uapi/linux/tipc_config.h | 1 + net/tipc/link.c | 73 ++++++++++++++++++++++++++++++++++++++ net/tipc/link.h | 1 + net/tipc/netlink.c | 5 +++ 4 files changed, 80 insertions(+) diff --git a/include/uapi/linux/tipc_config.h b/include/uapi/linux/tipc_config.h index 9c51151..3b0c0f0 100644 --- a/include/uapi/linux/tipc_config.h +++ b/include/uapi/linux/tipc_config.h @@ -56,6 +56,7 @@ enum { TIPC_NL_BEARER_SET, TIPC_NL_SOCK_GET, TIPC_NL_LINK_GET, + TIPC_NL_LINK_SET, __TIPC_NL_CMD_MAX, TIPC_NL_CMD_MAX = __TIPC_NL_CMD_MAX - 1 diff --git a/net/tipc/link.c b/net/tipc/link.c index e0aaca4..6d0c1fa 100644 --- a/net/tipc/link.c +++ b/net/tipc/link.c @@ -2435,6 +2435,79 @@ 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; diff --git a/net/tipc/link.h b/net/tipc/link.h index 8e3542a..3738ba1 100644 --- a/net/tipc/link.h +++ b/net/tipc/link.h @@ -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[]); /* diff --git a/net/tipc/netlink.c b/net/tipc/netlink.c index 5ecd0d1..745a323 100644 --- a/net/tipc/netlink.c +++ b/net/tipc/netlink.c @@ -123,6 +123,11 @@ static const struct genl_ops tipc_genl_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, } }; -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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