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Commit e5c3ea5c authored by Jiri Pirko's avatar Jiri Pirko Committed by David S. Miller
Browse files

bridge: implement rtnl_link_ops->get_size and rtnl_link_ops->fill_info 



Allow rtnetlink users to get bridge master info in IFLA_INFO_DATA attr
This initial part implements forward_delay, hello_time, max_age options.

Signed-off-by: default avatarJiri Pirko <jiri@resnulli.us>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 3ac636b8

include/uapi/linux/if_link.h

+12 −0
Original line number Diff line number Diff line
@@ -215,6 +215,18 @@ enum in6_addr_gen_mode { 
	IN6_ADDR_GEN_MODE_NONE,

};



/* Bridge section */



enum {

	IFLA_BR_UNSPEC,

	IFLA_BR_FORWARD_DELAY,

	IFLA_BR_HELLO_TIME,

	IFLA_BR_MAX_AGE,

	__IFLA_BR_MAX,

};



#define IFLA_BR_MAX	(__IFLA_BR_MAX - 1)



enum {

	BRIDGE_MODE_UNSPEC,

	BRIDGE_MODE_HAIRPIN,

net/bridge/br_netlink.c

+25 −0
Original line number Diff line number Diff line
@@ -484,6 +484,29 @@ static size_t br_port_get_slave_size(const struct net_device *brdev, 
	return br_port_info_size();

}



static size_t br_get_size(const struct net_device *brdev)

{

	return nla_total_size(sizeof(u32)) +	/* IFLA_BR_FORWARD_DELAY  */

	       nla_total_size(sizeof(u32)) +	/* IFLA_BR_HELLO_TIME */

	       nla_total_size(sizeof(u32)) +	/* IFLA_BR_MAX_AGE */

	       0;

}



static int br_fill_info(struct sk_buff *skb, const struct net_device *brdev)

{

	struct net_bridge *br = netdev_priv(brdev);

	u32 forward_delay = jiffies_to_clock_t(br->forward_delay);

	u32 hello_time = jiffies_to_clock_t(br->hello_time);

	u32 age_time = jiffies_to_clock_t(br->max_age);



	if (nla_put_u32(skb, IFLA_BR_FORWARD_DELAY, forward_delay) ||

	    nla_put_u32(skb, IFLA_BR_HELLO_TIME, hello_time) ||

	    nla_put_u32(skb, IFLA_BR_MAX_AGE, age_time))

		return -EMSGSIZE;



	return 0;

}



static size_t br_get_link_af_size(const struct net_device *dev)

{

	struct net_port_vlans *pv;
@@ -514,6 +537,8 @@ struct rtnl_link_ops br_link_ops __read_mostly = { 
	.validate		= br_validate,

	.newlink		= br_dev_newlink,

	.dellink		= br_dev_delete,

	.get_size		= br_get_size,

	.fill_info		= br_fill_info,



	.slave_maxtype		= IFLA_BRPORT_MAX,

	.slave_policy		= br_port_policy,